--- /dev/null
+
+ Low Level Serial API
+ --------------------
+
+
+ $Id: driver,v 1.9 2002/07/06 16:51:43 rmk Exp $
+
+
+This document is meant as a brief overview of some aspects of the new serial
+driver. It is not complete, any questions you have should be directed to
+<rmk@arm.linux.org.uk>
+
+The reference implementation is contained within serial_amba.c.
+
+
+
+Low Level Serial Hardware Driver
+--------------------------------
+
+The low level serial hardware driver is responsible for supplying port
+information (defined by uart_port) and a set of control methods (defined
+by uart_ops) to the core serial driver. The low level driver is also
+responsible for handling interrupts for the port, and providing any
+console support.
+
+
+Console Support
+---------------
+
+The serial core provides a few helper functions. This includes identifing
+the correct port structure (via uart_get_console) and decoding command line
+arguments (uart_parse_options).
+
+
+Locking
+-------
+
+It is the responsibility of the low level hardware driver to perform the
+necessary locking using port->lock. There are some exceptions (which
+are described in the uart_ops listing below.)
+
+There are three locks. A per-port spinlock, a per-port tmpbuf semaphore,
+and an overall semaphore.
+
+From the core driver perspective, the port->lock locks the following
+data:
+
+ port->mctrl
+ port->icount
+ info->xmit.head (circ->head)
+ info->xmit.tail (circ->tail)
+
+The low level driver is free to use this lock to provide any additional
+locking.
+
+The core driver uses the info->tmpbuf_sem lock to prevent multi-threaded
+access to the info->tmpbuf bouncebuffer used for port writes.
+
+The port_sem semaphore is used to protect against ports being added/
+removed or reconfigured at inappropriate times.
+
+
+uart_ops
+--------
+
+The uart_ops structure is the main interface between serial_core and the
+hardware specific driver. It contains all the methods to control the
+hardware.
+
+ tx_empty(port)
+ This function tests whether the transmitter fifo and shifter
+ for the port described by 'port' is empty. If it is empty,
+ this function should return TIOCSER_TEMT, otherwise return 0.
+ If the port does not support this operation, then it should
+ return TIOCSER_TEMT.
+
+ Locking: none.
+ Interrupts: caller dependent.
+ This call must not sleep
+
+ set_mctrl(port, mctrl)
+ This function sets the modem control lines for port described
+ by 'port' to the state described by mctrl. The relevant bits
+ of mctrl are:
+ - TIOCM_RTS RTS signal.
+ - TIOCM_DTR DTR signal.
+ - TIOCM_OUT1 OUT1 signal.
+ - TIOCM_OUT2 OUT2 signal.
+ If the appropriate bit is set, the signal should be driven
+ active. If the bit is clear, the signal should be driven
+ inactive.
+
+ Locking: port->lock taken.
+ Interrupts: locally disabled.
+ This call must not sleep
+
+ get_mctrl(port)
+ Returns the current state of modem control inputs. The state
+ of the outputs should not be returned, since the core keeps
+ track of their state. The state information should include:
+ - TIOCM_DCD state of DCD signal
+ - TIOCM_CTS state of CTS signal
+ - TIOCM_DSR state of DSR signal
+ - TIOCM_RI state of RI signal
+ The bit is set if the signal is currently driven active. If
+ the port does not support CTS, DCD or DSR, the driver should
+ indicate that the signal is permanently active. If RI is
+ not available, the signal should not be indicated as active.
+
+ Locking: none.
+ Interrupts: caller dependent.
+ This call must not sleep
+
+ stop_tx(port,tty_stop)
+ Stop transmitting characters. This might be due to the CTS
+ line becoming inactive or the tty layer indicating we want
+ to stop transmission.
+
+ tty_stop: 1 if this call is due to the TTY layer issuing a
+ TTY stop to the driver (equiv to rs_stop).
+
+ Locking: none.
+ Interrupts: caller dependent.
+ This call must not sleep
+
+ start_tx(port,tty_start)
+ start transmitting characters. (incidentally, nonempty will
+ always be nonzero, and shouldn't be used - it will be dropped).
+
+ tty_start: 1 if this call was due to the TTY layer issuing
+ a TTY start to the driver (equiv to rs_start)
+
+ Locking: port->lock taken.
+ Interrupts: locally disabled.
+ This call must not sleep
+
+ stop_rx(port)
+ Stop receiving characters; the port is in the process of
+ being closed.
+
+ Locking: none.
+ Interrupts: caller dependent.
+ This call must not sleep
+
+ enable_ms(port)
+ Enable the modem status interrupts.
+
+ Locking: none.
+ Interrupts: caller dependent.
+
+ break_ctl(port,ctl)
+ Control the transmission of a break signal. If ctl is
+ nonzero, the break signal should be transmitted. The signal
+ should be terminated when another call is made with a zero
+ ctl.
+
+ Locking: none.
+ Interrupts: caller dependent.
+ This call must not sleep
+
+ startup(port)
+ Grab any interrupt resources and initialise any low level driver
+ state. Enable the port for reception. It should not activate
+ RTS nor DTR; this will be done via a separate call to set_mctrl.
+
+ Locking: port_sem taken.
+ Interrupts: globally disabled.
+
+ shutdown(port)
+ Disable the port, disable any break condition that may be in
+ effect, and free any interrupt resources. It should not disable
+ RTS nor DTR; this will have already been done via a separate
+ call to set_mctrl.
+
+ Locking: port_sem taken.
+ Interrupts: caller dependent.
+
+ change_speed(port,cflag,iflag,quot)
+ Change the port parameters, including word length, parity, stop
+ bits. Update read_status_mask and ignore_status_mask to indicate
+ the types of events we are interested in receiving. Relevant
+ cflag bits are:
+ CSIZE - word size
+ CSTOPB - 2 stop bits
+ PARENB - parity enable
+ PARODD - odd parity (when PARENB is in force)
+ CREAD - enable reception of characters (if not set,
+ still receive characters from the port, but
+ throw them away.
+ CRTSCTS - if set, enable CTS status change reporting
+ CLOCAL - if not set, enable modem status change
+ reporting.
+ Relevant iflag bits are:
+ INPCK - enable frame and parity error events to be
+ passed to the TTY layer.
+ BRKINT
+ PARMRK - both of these enable break events to be
+ passed to the TTY layer.
+
+ IGNPAR - ignore parity and framing errors
+ IGNBRK - ignore break errors, If IGNPAR is also
+ set, ignore overrun errors as well.
+ The interaction of the iflag bits is as follows (parity error
+ given as an example):
+ Parity error INPCK IGNPAR
+ None n/a n/a character received
+ Yes n/a 0 character discarded
+ Yes 0 1 character received, marked as
+ TTY_NORMAL
+ Yes 1 1 character received, marked as
+ TTY_PARITY
+
+ Locking: none.
+ Interrupts: caller dependent.
+ This call must not sleep
+
+ pm(port,state,oldstate)
+ perform any power management related activities on the specified
+ port. state indicates the new state (defined by ACPI D0-D3),
+ oldstate indicates the previous state. Essentially, D0 means
+ fully on, D3 means powered down.
+
+ This function should not be used to grab any resources.
+
+ Locking: none.
+ Interrupts: caller dependent.
+
+ type(port)
+ Return a pointer to a string constant describing the specified
+ port, or return NULL, in which case the string 'unknown' is
+ substituted.
+
+ Locking: none.
+ Interrupts: caller dependent.
+
+ release_port(port)
+ Release any memory and IO region resources currently in use by
+ the port.
+
+ Locking: none.
+ Interrupts: caller dependent.
+
+ request_port(port)
+ Request any memory and IO region resources required by the port.
+ If any fail, no resources should be registered when this function
+ returns, and it should return -EBUSY on failure.
+
+ Locking: none.
+ Interrupts: caller dependent.
+
+ config_port(port,type)
+ Perform any autoconfiguration steps required for the port. `type`
+ contains a bit mask of the required configuration. UART_CONFIG_TYPE
+ indicates that the port requires detection and identification.
+ port->type should be set to the type found, or PORT_UNKNOWN if
+ no port was detected.
+
+ UART_CONFIG_IRQ indicates autoconfiguration of the interrupt signal,
+ which should be probed using standard kernel autoprobing techniques.
+ This is not necessary on platforms where ports have interrupts
+ internally hard wired (eg, system on a chip implementations).
+
+ Locking: none.
+ Interrupts: caller dependent.
+
+ verify_port(port,serinfo)
+ Verify the new serial port information contained within serinfo is
+ suitable for this port type.
+
+ Locking: none.
+ Interrupts: caller dependent.
+
+ ioctl(port,cmd,arg)
+ Perform any port specific IOCTLs. IOCTL commands must be defined
+ using the standard numbering system found in <asm/ioctl.h>
+
+ Locking: none.
+ Interrupts: caller dependent.
+
+
+Other notes
+-----------
+
+It is intended some day to drop the 'unused' entries from uart_port, and
+allow low level drivers to register their own individual uart_port's with
+the core. This will allow drivers to use uart_port as a pointer to a
+structure containing both the uart_port entry with their own extensions,
+thus:
+
+ struct my_port {
+ struct uart_port port;
+ int my_stuff;
+ };
+
+Todo
+----
+
+Please see the BUGS file in CVS at
+
+ http://cvs.arm.linux.org.uk/cgi/viewcvs.cgi/serial/BUGS
CPPFLAGS := -D__KERNEL__ -I$(HPATH)
-CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -O2 \
+CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -g \
-fomit-frame-pointer -fno-strict-aliasing -fno-common
AFLAGS := -D__ASSEMBLY__ $(CPPFLAGS)
obj-$(CONFIG_PCI) += pci/
obj-$(CONFIG_ACPI) += acpi/
obj-$(CONFIG_PARPORT) += parport/
-obj-y += base/ char/ block/ misc/ net/ media/
+obj-y += base/ serial/ char/ block/ misc/ net/ media/
obj-$(CONFIG_NUBUS) += nubus/
obj-$(CONFIG_ATM) += atm/
obj-$(CONFIG_IDE) += ide/
if [ "$CONFIG_VT" = "y" ]; then
bool ' Support for console on virtual terminal' CONFIG_VT_CONSOLE
fi
-tristate 'Standard/generic (8250/16550 and compatible UARTs) serial support' CONFIG_SERIAL
-if [ "$CONFIG_SERIAL" = "y" ]; then
- bool ' Support for console on serial port' CONFIG_SERIAL_CONSOLE
- if [ "$CONFIG_ARCH_ACORN" = "y" ]; then
- tristate ' Atomwide serial port support' CONFIG_ATOMWIDE_SERIAL
- tristate ' Dual serial port support' CONFIG_DUALSP_SERIAL
- fi
-fi
-if [ "$CONFIG_ACPI" = "y" -a "$CONFIG_IA64" = "y" ]; then
- bool ' Support for serial ports defined by ACPI tables' CONFIG_SERIAL_ACPI
-fi
-dep_mbool 'Extended dumb serial driver options' CONFIG_SERIAL_EXTENDED $CONFIG_SERIAL
-if [ "$CONFIG_SERIAL_EXTENDED" = "y" ]; then
- bool ' Support more than 4 serial ports' CONFIG_SERIAL_MANY_PORTS
- bool ' Support for sharing serial interrupts' CONFIG_SERIAL_SHARE_IRQ
- bool ' Autodetect IRQ on standard ports (unsafe)' CONFIG_SERIAL_DETECT_IRQ
- bool ' Support special multiport boards' CONFIG_SERIAL_MULTIPORT
- bool ' Support the Bell Technologies HUB6 card' CONFIG_HUB6
-fi
bool 'Non-standard serial port support' CONFIG_SERIAL_NONSTANDARD
if [ "$CONFIG_SERIAL_NONSTANDARD" = "y" ]; then
tristate ' Computone IntelliPort Plus serial support' CONFIG_COMPUTONE
if [ "$CONFIG_EXPERIMENTAL" = "y" -a "$CONFIG_ZORRO" = "y" ]; then
tristate 'Commodore A2232 serial support (EXPERIMENTAL)' CONFIG_A2232
fi
-if [ "$CONFIG_FOOTBRIDGE" = "y" ]; then
- bool 'DC21285 serial port support' CONFIG_SERIAL_21285
- if [ "$CONFIG_SERIAL_21285" = "y" ]; then
- if [ "$CONFIG_OBSOLETE" = "y" ]; then
- bool ' Use /dev/ttyS0 device (OBSOLETE)' CONFIG_SERIAL_21285_OLD
- fi
- bool ' Console on DC21285 serial port' CONFIG_SERIAL_21285_CONSOLE
- fi
-fi
+
+source drivers/serial/Config.in
+
bool 'Unix98 PTY support' CONFIG_UNIX98_PTYS
if [ "$CONFIG_UNIX98_PTYS" = "y" ]; then
int 'Maximum number of Unix98 PTYs in use (0-2048)' CONFIG_UNIX98_PTY_COUNT 256
# This list comes from 'grep -l EXPORT_SYMBOL *.[hc]'.
export-objs := busmouse.o console.o keyboard.o sysrq.o \
- misc.o pty.o random.o selection.o serial.o \
+ misc.o pty.o random.o selection.o \
sonypi.o tty_io.o tty_ioctl.o generic_serial.o rtc.o \
ip2main.o
KEYMAP =defkeymap.o
KEYBD =pc_keyb.o
CONSOLE =console.o
-SERIAL =serial.o
ifeq ($(ARCH),s390)
KEYMAP =
KEYBD =
CONSOLE =
- SERIAL =
endif
ifeq ($(ARCH),mips)
KEYMAP =
KEYBD =
CONSOLE =
- SERIAL =
endif
ifeq ($(ARCH),m68k)
else
KEYBD =
endif
- SERIAL =
endif
ifeq ($(ARCH),arm)
ifeq ($(CONFIG_BAGET_MIPS),y)
KEYBD =
- SERIAL =
-endif
-
-ifeq ($(CONFIG_NINO),y)
- SERIAL =
-endif
-
-ifneq ($(CONFIG_SUN_SERIAL),)
- SERIAL =
endif
ifeq ($(CONFIG_QTRONIX_KEYBOARD),y)
endif
obj-$(CONFIG_VT) += vt.o vc_screen.o consolemap.o consolemap_deftbl.o $(CONSOLE) selection.o
-obj-$(CONFIG_SERIAL) += $(SERIAL)
-obj-$(CONFIG_SERIAL_ACPI) += acpi_serial.o
-obj-$(CONFIG_SERIAL_21285) += serial_21285.o
-obj-$(CONFIG_SERIAL_SA1100) += serial_sa1100.o
-obj-$(CONFIG_SERIAL_AMBA) += serial_amba.o
+#obj-$(CONFIG_SERIAL) += $(SERIAL) # Fix for decserial.o
ifndef CONFIG_SUN_KEYBOARD
obj-$(CONFIG_VT) += keyboard.o $(KEYMAP) $(KEYBD)
+++ /dev/null
-/*
- * linux/drivers/char/acpi_serial.c
- *
- * Copyright (C) 2000 Hewlett-Packard Co.
- * Copyright (C) 2000 Khalid Aziz <khalid_aziz@hp.com>
- *
- * Detect and initialize the headless console serial port defined in
- * SPCR table and debug serial port defined in DBGP table
- *
- */
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/pm.h>
-#include <linux/acpi.h>
-#include <linux/init.h>
-#include <linux/serial.h>
-#include <asm/serial.h>
-#include <asm/io.h>
-#include <linux/acpi_serial.h>
-/*#include <asm/acpi-ext.h>*/
-
-#undef SERIAL_DEBUG_ACPI
-
-/*
- * Query ACPI tables for a debug and a headless console serial
- * port. If found, add them to rs_table[]. A pointer to either SPCR
- * or DBGP table is passed as parameter. This function should be called
- * before serial_console_init() is called to make sure the SPCR serial
- * console will be available for use. IA-64 kernel calls this function
- * from within acpi.c when it encounters SPCR or DBGP tables as it parses
- * the ACPI 2.0 tables during bootup.
- *
- */
-void __init setup_serial_acpi(void *tablep)
-{
- acpi_ser_t *acpi_ser_p;
- struct serial_struct serial_req;
- unsigned long iobase;
- int global_sys_irq;
-
-#ifdef SERIAL_DEBUG_ACPI
- printk("Entering setup_serial_acpi()\n");
-#endif
-
- /* Now get the table */
- if (tablep == NULL) {
- return;
- }
-
- acpi_ser_p = (acpi_ser_t *)tablep;
-
- /*
- * Perform a sanity check on the table. Table should have a
- * signature of "SPCR" or "DBGP" and it should be atleast 52 bytes
- * long.
- */
- if ((strncmp(acpi_ser_p->signature, ACPI_SPCRT_SIGNATURE,
- ACPI_SIG_LEN) != 0) &&
- (strncmp(acpi_ser_p->signature, ACPI_DBGPT_SIGNATURE,
- ACPI_SIG_LEN) != 0)) {
- return;
- }
- if (acpi_ser_p->length < 52) {
- return;
- }
-
- iobase = (((u64) acpi_ser_p->base_addr.addrh) << 32) | acpi_ser_p->base_addr.addrl;
- global_sys_irq = (acpi_ser_p->global_int[3] << 24) |
- (acpi_ser_p->global_int[2] << 16) |
- (acpi_ser_p->global_int[1] << 8) |
- acpi_ser_p->global_int[0];
-
-#ifdef SERIAL_DEBUG_ACPI
- printk("setup_serial_acpi(): table pointer = 0x%p\n", acpi_ser_p);
- printk(" sig = '%c%c%c%c'\n",
- acpi_ser_p->signature[0],
- acpi_ser_p->signature[1],
- acpi_ser_p->signature[2],
- acpi_ser_p->signature[3]);
- printk(" length = %d\n", acpi_ser_p->length);
- printk(" Rev = %d\n", acpi_ser_p->rev);
- printk(" Interface type = %d\n", acpi_ser_p->intfc_type);
- printk(" Base address = 0x%lX\n", iobase);
- printk(" IRQ = %d\n", acpi_ser_p->irq);
- printk(" Global System Int = %d\n", global_sys_irq);
- printk(" Baud rate = ");
- switch (acpi_ser_p->baud) {
- case ACPI_SERIAL_BAUD_9600:
- printk("9600\n");
- break;
-
- case ACPI_SERIAL_BAUD_19200:
- printk("19200\n");
- break;
-
- case ACPI_SERIAL_BAUD_57600:
- printk("57600\n");
- break;
-
- case ACPI_SERIAL_BAUD_115200:
- printk("115200\n");
- break;
-
- default:
- printk("Huh (%d)\n", acpi_ser_p->baud);
- break;
-
- }
- if (acpi_ser_p->base_addr.space_id == ACPI_SERIAL_PCICONF_SPACE) {
- printk(" PCI serial port:\n");
- printk(" Bus %d, Device %d, Vendor ID 0x%x, Dev ID 0x%x\n",
- acpi_ser_p->pci_bus, acpi_ser_p->pci_dev,
- acpi_ser_p->pci_vendor_id, acpi_ser_p->pci_dev_id);
- }
-#endif
-
- /*
- * Now build a serial_req structure to update the entry in
- * rs_table for the headless console port.
- */
- switch (acpi_ser_p->intfc_type) {
- case ACPI_SERIAL_INTFC_16550:
- serial_req.type = PORT_16550;
- serial_req.baud_base = BASE_BAUD;
- break;
-
- case ACPI_SERIAL_INTFC_16450:
- serial_req.type = PORT_16450;
- serial_req.baud_base = BASE_BAUD;
- break;
-
- default:
- serial_req.type = PORT_UNKNOWN;
- break;
- }
- if (strncmp(acpi_ser_p->signature, ACPI_SPCRT_SIGNATURE,
- ACPI_SIG_LEN) == 0) {
- serial_req.line = ACPI_SERIAL_CONSOLE_PORT;
- }
- else if (strncmp(acpi_ser_p->signature, ACPI_DBGPT_SIGNATURE,
- ACPI_SIG_LEN) == 0) {
- serial_req.line = ACPI_SERIAL_DEBUG_PORT;
- }
- /*
- * Check if this is an I/O mapped address or a memory mapped address
- */
- if (acpi_ser_p->base_addr.space_id == ACPI_SERIAL_MEM_SPACE) {
- serial_req.port = 0;
- serial_req.port_high = 0;
- serial_req.iomem_base = (void *)ioremap(iobase, 64);
- serial_req.io_type = SERIAL_IO_MEM;
- }
- else if (acpi_ser_p->base_addr.space_id == ACPI_SERIAL_IO_SPACE) {
- serial_req.port = (unsigned long) iobase & 0xffffffff;
- serial_req.port_high = (unsigned long)(((u64)iobase) >> 32);
- serial_req.iomem_base = NULL;
- serial_req.io_type = SERIAL_IO_PORT;
- }
- else if (acpi_ser_p->base_addr.space_id == ACPI_SERIAL_PCICONF_SPACE) {
- printk("WARNING: No support for PCI serial console\n");
- return;
- }
-
- /*
- * If the table does not have IRQ information, use 0 for IRQ.
- * This will force rs_init() to probe for IRQ.
- */
- if (acpi_ser_p->length < 53) {
- serial_req.irq = 0;
- }
- else {
- serial_req.flags = ASYNC_SKIP_TEST | ASYNC_BOOT_AUTOCONF |
- ASYNC_AUTO_IRQ;
- if (acpi_ser_p->int_type &
- (ACPI_SERIAL_INT_APIC | ACPI_SERIAL_INT_SAPIC)) {
- serial_req.irq = global_sys_irq;
- }
- else if (acpi_ser_p->int_type & ACPI_SERIAL_INT_PCAT) {
- serial_req.irq = acpi_ser_p->irq;
- }
- else {
- /*
- * IRQ type not being set would mean UART will
- * run in polling mode. Do not probe for IRQ in
- * that case.
- */
- serial_req.flags = ASYNC_SKIP_TEST|ASYNC_BOOT_AUTOCONF;
- }
- }
-
- serial_req.xmit_fifo_size = serial_req.custom_divisor = 0;
- serial_req.close_delay = serial_req.hub6 = serial_req.closing_wait = 0;
- serial_req.iomem_reg_shift = 0;
- if (early_serial_setup(&serial_req) < 0) {
- printk("early_serial_setup() for ACPI serial console port failed\n");
- return;
- }
-
-#ifdef SERIAL_DEBUG_ACPI
- printk("Leaving setup_serial_acpi()\n");
-#endif
-}
mainmenu_option next_comment
comment 'PCMCIA character devices'
-dep_tristate 'PCMCIA serial device support' CONFIG_PCMCIA_SERIAL_CS $CONFIG_PCMCIA $CONFIG_SERIAL
dep_tristate 'SyncLink PC Card support' CONFIG_SYNCLINK_CS $CONFIG_PCMCIA
endmenu
# Makefile for the Linux PCMCIA char device drivers.
#
-obj-$(CONFIG_PCMCIA_SERIAL_CS) += serial_cs.o
obj-$(CONFIG_SYNCLINK_CS) += synclink_cs.o
include $(TOPDIR)/Rules.make
+++ /dev/null
-/*======================================================================
-
- A driver for PCMCIA serial devices
-
- serial_cs.c 1.123 2000/08/24 18:46:38
-
- The contents of this file are subject to the Mozilla Public
- License Version 1.1 (the "License"); you may not use this file
- except in compliance with the License. You may obtain a copy of
- the License at http://www.mozilla.org/MPL/
-
- Software distributed under the License is distributed on an "AS
- IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- implied. See the License for the specific language governing
- rights and limitations under the License.
-
- The initial developer of the original code is David A. Hinds
- <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
- are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
-
- Alternatively, the contents of this file may be used under the
- terms of the GNU General Public License version 2 (the "GPL"), in which
- case the provisions of the GPL are applicable instead of the
- above. If you wish to allow the use of your version of this file
- only under the terms of the GPL and not to allow others to use
- your version of this file under the MPL, indicate your decision
- by deleting the provisions above and replace them with the notice
- and other provisions required by the GPL. If you do not delete
- the provisions above, a recipient may use your version of this
- file under either the MPL or the GPL.
-
-======================================================================*/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/tty.h>
-#include <linux/serial.h>
-#include <linux/major.h>
-#include <asm/io.h>
-#include <asm/system.h>
-
-#include <pcmcia/version.h>
-#include <pcmcia/cs_types.h>
-#include <pcmcia/cs.h>
-#include <pcmcia/cistpl.h>
-#include <pcmcia/ciscode.h>
-#include <pcmcia/ds.h>
-#include <pcmcia/cisreg.h>
-
-#ifdef PCMCIA_DEBUG
-static int pc_debug = PCMCIA_DEBUG;
-MODULE_PARM(pc_debug, "i");
-#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
-static char *version =
-"serial_cs.c 1.123 2000/08/24 18:46:38 (David Hinds)";
-#else
-#define DEBUG(n, args...)
-#endif
-
-/*====================================================================*/
-
-/* Parameters that can be set with 'insmod' */
-
-/* Bit map of interrupts to choose from */
-static u_int irq_mask = 0xdeb8;
-static int irq_list[4] = { -1 };
-
-/* Enable the speaker? */
-static int do_sound = 1;
-
-MODULE_PARM(irq_mask, "i");
-MODULE_PARM(irq_list, "1-4i");
-MODULE_PARM(do_sound, "i");
-
-/*====================================================================*/
-
-/* Table of multi-port card ID's */
-
-typedef struct {
- u_short manfid;
- u_short prodid;
- int multi; /* 1 = multifunction, > 1 = # ports */
-} multi_id_t;
-
-static multi_id_t multi_id[] = {
- { MANFID_OMEGA, PRODID_OMEGA_QSP_100, 4 },
- { MANFID_QUATECH, PRODID_QUATECH_DUAL_RS232, 2 },
- { MANFID_QUATECH, PRODID_QUATECH_DUAL_RS232_D1, 2 },
- { MANFID_QUATECH, PRODID_QUATECH_QUAD_RS232, 4 },
- { MANFID_SOCKET, PRODID_SOCKET_DUAL_RS232, 2 },
- { MANFID_INTEL, PRODID_INTEL_DUAL_RS232, 2 },
- { MANFID_NATINST, PRODID_NATINST_QUAD_RS232, 4 }
-};
-#define MULTI_COUNT (sizeof(multi_id)/sizeof(multi_id_t))
-
-typedef struct serial_info_t {
- dev_link_t link;
- int ndev;
- int multi;
- int slave;
- int manfid;
- dev_node_t node[4];
- int line[4];
-} serial_info_t;
-
-static void serial_config(dev_link_t *link);
-static void serial_release(u_long arg);
-static int serial_event(event_t event, int priority,
- event_callback_args_t *args);
-
-static dev_info_t dev_info = "serial_cs";
-
-static dev_link_t *serial_attach(void);
-static void serial_detach(dev_link_t *);
-
-static dev_link_t *dev_list = NULL;
-
-/*====================================================================*/
-
-static void cs_error(client_handle_t handle, int func, int ret)
-{
- error_info_t err = { func, ret };
- CardServices(ReportError, handle, &err);
-}
-
-/*======================================================================
-
- serial_attach() creates an "instance" of the driver, allocating
- local data structures for one device. The device is registered
- with Card Services.
-
-======================================================================*/
-
-static dev_link_t *serial_attach(void)
-{
- serial_info_t *info;
- client_reg_t client_reg;
- dev_link_t *link;
- int i, ret;
-
- DEBUG(0, "serial_attach()\n");
-
- /* Create new serial device */
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (!info) return NULL;
- memset(info, 0, sizeof(*info));
- link = &info->link; link->priv = info;
-
- link->release.function = &serial_release;
- link->release.data = (u_long)link;
- link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
- link->io.NumPorts1 = 8;
- link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
- link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
- if (irq_list[0] == -1)
- link->irq.IRQInfo2 = irq_mask;
- else
- for (i = 0; i < 4; i++)
- link->irq.IRQInfo2 |= 1 << irq_list[i];
- link->conf.Attributes = CONF_ENABLE_IRQ;
- link->conf.Vcc = 50;
- if (do_sound) {
- link->conf.Attributes |= CONF_ENABLE_SPKR;
- link->conf.Status = CCSR_AUDIO_ENA;
- }
- link->conf.IntType = INT_MEMORY_AND_IO;
-
- /* Register with Card Services */
- link->next = dev_list;
- dev_list = link;
- client_reg.dev_info = &dev_info;
- client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
- client_reg.EventMask =
- CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
- CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
- CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
- client_reg.event_handler = &serial_event;
- client_reg.Version = 0x0210;
- client_reg.event_callback_args.client_data = link;
- ret = CardServices(RegisterClient, &link->handle, &client_reg);
- if (ret != CS_SUCCESS) {
- cs_error(link->handle, RegisterClient, ret);
- serial_detach(link);
- return NULL;
- }
-
- return link;
-} /* serial_attach */
-
-/*======================================================================
-
- This deletes a driver "instance". The device is de-registered
- with Card Services. If it has been released, all local data
- structures are freed. Otherwise, the structures will be freed
- when the device is released.
-
-======================================================================*/
-
-static void serial_detach(dev_link_t *link)
-{
- serial_info_t *info = link->priv;
- dev_link_t **linkp;
- int ret;
-
- DEBUG(0, "serial_detach(0x%p)\n", link);
-
- /* Locate device structure */
- for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
- if (*linkp == link) break;
- if (*linkp == NULL)
- return;
-
- del_timer(&link->release);
- if (link->state & DEV_CONFIG)
- serial_release((u_long)link);
-
- if (link->handle) {
- ret = CardServices(DeregisterClient, link->handle);
- if (ret != CS_SUCCESS)
- cs_error(link->handle, DeregisterClient, ret);
- }
-
- /* Unlink device structure, free bits */
- *linkp = link->next;
- kfree(info);
-
-} /* serial_detach */
-
-/*====================================================================*/
-
-static int setup_serial(serial_info_t *info, ioaddr_t port, int irq)
-{
- struct serial_struct serial;
- int line;
-
- memset(&serial, 0, sizeof(serial));
- serial.port = port;
- serial.irq = irq;
- serial.flags = ASYNC_SKIP_TEST | ASYNC_SHARE_IRQ;
- line = register_serial(&serial);
- if (line < 0) {
- printk(KERN_NOTICE "serial_cs: register_serial() at 0x%04lx,"
- " irq %d failed\n", (u_long)serial.port, serial.irq);
- return -1;
- }
-
- info->line[info->ndev] = line;
- sprintf(info->node[info->ndev].dev_name, "ttyS%d", line);
- info->node[info->ndev].major = TTY_MAJOR;
- info->node[info->ndev].minor = 0x40+line;
- if (info->ndev > 0)
- info->node[info->ndev-1].next = &info->node[info->ndev];
- info->ndev++;
-
- return 0;
-}
-
-/*====================================================================*/
-
-static int get_tuple(int fn, client_handle_t handle, tuple_t *tuple,
- cisparse_t *parse)
-{
- int i;
- i = CardServices(fn, handle, tuple);
- if (i != CS_SUCCESS) return CS_NO_MORE_ITEMS;
- i = CardServices(GetTupleData, handle, tuple);
- if (i != CS_SUCCESS) return i;
- return CardServices(ParseTuple, handle, tuple, parse);
-}
-
-#define first_tuple(a, b, c) get_tuple(GetFirstTuple, a, b, c)
-#define next_tuple(a, b, c) get_tuple(GetNextTuple, a, b, c)
-
-/*====================================================================*/
-
-static int simple_config(dev_link_t *link)
-{
- static ioaddr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
- client_handle_t handle = link->handle;
- serial_info_t *info = link->priv;
- tuple_t tuple;
- u_char buf[256];
- cisparse_t parse;
- cistpl_cftable_entry_t *cf = &parse.cftable_entry;
- config_info_t config;
- int i, j, try;
-
- /* If the card is already configured, look up the port and irq */
- i = CardServices(GetConfigurationInfo, handle, &config);
- if ((i == CS_SUCCESS) &&
- (config.Attributes & CONF_VALID_CLIENT)) {
- ioaddr_t port = 0;
- if ((config.BasePort2 != 0) && (config.NumPorts2 == 8)) {
- port = config.BasePort2;
- info->slave = 1;
- } else if ((info->manfid == MANFID_OSITECH) &&
- (config.NumPorts1 == 0x40)) {
- port = config.BasePort1 + 0x28;
- info->slave = 1;
- }
- if (info->slave)
- return setup_serial(info, port, config.AssignedIRQ);
- }
- link->conf.Vcc = config.Vcc;
-
- /* First pass: look for a config entry that looks normal. */
- tuple.TupleData = (cisdata_t *)buf;
- tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
- tuple.Attributes = 0;
- tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
- /* Two tries: without IO aliases, then with aliases */
- for (try = 0; try < 2; try++) {
- i = first_tuple(handle, &tuple, &parse);
- while (i != CS_NO_MORE_ITEMS) {
- if (i != CS_SUCCESS) goto next_entry;
- if (cf->vpp1.present & (1<<CISTPL_POWER_VNOM))
- link->conf.Vpp1 = link->conf.Vpp2 =
- cf->vpp1.param[CISTPL_POWER_VNOM]/10000;
- if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) &&
- (cf->io.win[0].base != 0)) {
- link->conf.ConfigIndex = cf->index;
- link->io.BasePort1 = cf->io.win[0].base;
- link->io.IOAddrLines = (try == 0) ?
- 16 : cf->io.flags & CISTPL_IO_LINES_MASK;
- i = CardServices(RequestIO, link->handle, &link->io);
- if (i == CS_SUCCESS) goto found_port;
- }
- next_entry:
- i = next_tuple(handle, &tuple, &parse);
- }
- }
-
- /* Second pass: try to find an entry that isn't picky about
- its base address, then try to grab any standard serial port
- address, and finally try to get any free port. */
- i = first_tuple(handle, &tuple, &parse);
- while (i != CS_NO_MORE_ITEMS) {
- if ((i == CS_SUCCESS) && (cf->io.nwin > 0) &&
- ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) {
- link->conf.ConfigIndex = cf->index;
- for (j = 0; j < 5; j++) {
- link->io.BasePort1 = base[j];
- link->io.IOAddrLines = base[j] ? 16 : 3;
- i = CardServices(RequestIO, link->handle,
- &link->io);
- if (i == CS_SUCCESS) goto found_port;
- }
- }
- i = next_tuple(handle, &tuple, &parse);
- }
-
-found_port:
- if (i != CS_SUCCESS) {
- printk(KERN_NOTICE "serial_cs: no usable port range found, giving up\n");
- cs_error(link->handle, RequestIO, i);
- return -1;
- }
-
- i = CardServices(RequestIRQ, link->handle, &link->irq);
- if (i != CS_SUCCESS) {
- cs_error(link->handle, RequestIRQ, i);
- link->irq.AssignedIRQ = 0;
- }
- if (info->multi && (info->manfid == MANFID_3COM))
- link->conf.ConfigIndex &= ~(0x08);
- i = CardServices(RequestConfiguration, link->handle, &link->conf);
- if (i != CS_SUCCESS) {
- cs_error(link->handle, RequestConfiguration, i);
- return -1;
- }
-
- return setup_serial(info, link->io.BasePort1, link->irq.AssignedIRQ);
-}
-
-static int multi_config(dev_link_t *link)
-{
- client_handle_t handle = link->handle;
- serial_info_t *info = link->priv;
- tuple_t tuple;
- u_char buf[256];
- cisparse_t parse;
- cistpl_cftable_entry_t *cf = &parse.cftable_entry;
- int i, base2 = 0;
-
- tuple.TupleData = (cisdata_t *)buf;
- tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
- tuple.Attributes = 0;
- tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
-
- /* First, look for a generic full-sized window */
- link->io.NumPorts1 = info->multi * 8;
- i = first_tuple(handle, &tuple, &parse);
- while (i != CS_NO_MORE_ITEMS) {
- /* The quad port cards have bad CIS's, so just look for a
- window larger than 8 ports and assume it will be right */
- if ((i == CS_SUCCESS) && (cf->io.nwin == 1) &&
- (cf->io.win[0].len > 8)) {
- link->conf.ConfigIndex = cf->index;
- link->io.BasePort1 = cf->io.win[0].base;
- link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
- i = CardServices(RequestIO, link->handle, &link->io);
- base2 = link->io.BasePort1 + 8;
- if (i == CS_SUCCESS) break;
- }
- i = next_tuple(handle, &tuple, &parse);
- }
-
- /* If that didn't work, look for two windows */
- if (i != CS_SUCCESS) {
- link->io.NumPorts1 = link->io.NumPorts2 = 8;
- info->multi = 2;
- i = first_tuple(handle, &tuple, &parse);
- while (i != CS_NO_MORE_ITEMS) {
- if ((i == CS_SUCCESS) && (cf->io.nwin == 2)) {
- link->conf.ConfigIndex = cf->index;
- link->io.BasePort1 = cf->io.win[0].base;
- link->io.BasePort2 = cf->io.win[1].base;
- link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
- i = CardServices(RequestIO, link->handle, &link->io);
- base2 = link->io.BasePort2;
- if (i == CS_SUCCESS) break;
- }
- i = next_tuple(handle, &tuple, &parse);
- }
- }
-
- if (i != CS_SUCCESS) {
- cs_error(link->handle, RequestIO, i);
- return -1;
- }
-
- i = CardServices(RequestIRQ, link->handle, &link->irq);
- if (i != CS_SUCCESS) {
- printk(KERN_NOTICE "serial_cs: no usable port range found, giving up\n");
- cs_error(link->handle, RequestIRQ, i);
- link->irq.AssignedIRQ = 0;
- }
- /* Socket Dual IO: this enables irq's for second port */
- if (info->multi && (info->manfid == MANFID_SOCKET)) {
- link->conf.Present |= PRESENT_EXT_STATUS;
- link->conf.ExtStatus = ESR_REQ_ATTN_ENA;
- }
- i = CardServices(RequestConfiguration, link->handle, &link->conf);
- if (i != CS_SUCCESS) {
- cs_error(link->handle, RequestConfiguration, i);
- return -1;
- }
-
- setup_serial(info, link->io.BasePort1, link->irq.AssignedIRQ);
- /* The Nokia cards are not really multiport cards */
- if (info->manfid == MANFID_NOKIA)
- return 0;
- for (i = 0; i < info->multi-1; i++)
- setup_serial(info, base2+(8*i), link->irq.AssignedIRQ);
-
- return 0;
-}
-
-/*======================================================================
-
- serial_config() is scheduled to run after a CARD_INSERTION event
- is received, to configure the PCMCIA socket, and to make the
- serial device available to the system.
-
-======================================================================*/
-
-#define CS_CHECK(fn, args...) \
-while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
-
-void serial_config(dev_link_t *link)
-{
- client_handle_t handle = link->handle;
- serial_info_t *info = link->priv;
- tuple_t tuple;
- u_short buf[128];
- cisparse_t parse;
- cistpl_cftable_entry_t *cf = &parse.cftable_entry;
- int i, last_ret, last_fn;
-
- DEBUG(0, "serial_config(0x%p)\n", link);
-
- tuple.TupleData = (cisdata_t *)buf;
- tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
- tuple.Attributes = 0;
- /* Get configuration register information */
- tuple.DesiredTuple = CISTPL_CONFIG;
- last_ret = first_tuple(handle, &tuple, &parse);
- if (last_ret != CS_SUCCESS) {
- last_fn = ParseTuple;
- goto cs_failed;
- }
- link->conf.ConfigBase = parse.config.base;
- link->conf.Present = parse.config.rmask[0];
-
- /* Configure card */
- link->state |= DEV_CONFIG;
-
- /* Is this a compliant multifunction card? */
- tuple.DesiredTuple = CISTPL_LONGLINK_MFC;
- tuple.Attributes = TUPLE_RETURN_COMMON | TUPLE_RETURN_LINK;
- info->multi = (first_tuple(handle, &tuple, &parse) == CS_SUCCESS);
-
- /* Is this a multiport card? */
- tuple.DesiredTuple = CISTPL_MANFID;
- if (first_tuple(handle, &tuple, &parse) == CS_SUCCESS) {
- info->manfid = le16_to_cpu(buf[0]);
- for (i = 0; i < MULTI_COUNT; i++)
- if ((info->manfid == multi_id[i].manfid) &&
- (le16_to_cpu(buf[1]) == multi_id[i].prodid))
- break;
- if (i < MULTI_COUNT)
- info->multi = multi_id[i].multi;
- }
-
- /* Another check for dual-serial cards: look for either serial or
- multifunction cards that ask for appropriate IO port ranges */
- tuple.DesiredTuple = CISTPL_FUNCID;
- if ((info->multi == 0) &&
- ((first_tuple(handle, &tuple, &parse) != CS_SUCCESS) ||
- (parse.funcid.func == CISTPL_FUNCID_MULTI) ||
- (parse.funcid.func == CISTPL_FUNCID_SERIAL))) {
- tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
- if (first_tuple(handle, &tuple, &parse) == CS_SUCCESS) {
- if ((cf->io.nwin == 1) && (cf->io.win[0].len % 8 == 0))
- info->multi = cf->io.win[0].len >> 3;
- if ((cf->io.nwin == 2) && (cf->io.win[0].len == 8) &&
- (cf->io.win[1].len == 8))
- info->multi = 2;
- }
- }
-
- if (info->multi > 1)
- multi_config(link);
- else
- simple_config(link);
-
- if (info->ndev == 0)
- goto failed;
-
- if (info->manfid == MANFID_IBM) {
- conf_reg_t reg = { 0, CS_READ, 0x800, 0 };
- CS_CHECK(AccessConfigurationRegister, link->handle, ®);
- reg.Action = CS_WRITE;
- reg.Value = reg.Value | 1;
- CS_CHECK(AccessConfigurationRegister, link->handle, ®);
- }
-
- link->dev = &info->node[0];
- link->state &= ~DEV_CONFIG_PENDING;
- return;
-
-cs_failed:
- cs_error(link->handle, last_fn, last_ret);
-failed:
- serial_release((u_long)link);
-
-} /* serial_config */
-
-/*======================================================================
-
- After a card is removed, serial_release() will unregister the net
- device, and release the PCMCIA configuration.
-
-======================================================================*/
-
-void serial_release(u_long arg)
-{
- dev_link_t *link = (dev_link_t *)arg;
- serial_info_t *info = link->priv;
- int i;
-
- DEBUG(0, "serial_release(0x%p)\n", link);
-
- for (i = 0; i < info->ndev; i++) {
- unregister_serial(info->line[i]);
- }
- link->dev = NULL;
-
- if (!info->slave) {
- CardServices(ReleaseConfiguration, link->handle);
- CardServices(ReleaseIO, link->handle, &link->io);
- CardServices(ReleaseIRQ, link->handle, &link->irq);
- }
-
- link->state &= ~DEV_CONFIG;
-
-} /* serial_release */
-
-/*======================================================================
-
- The card status event handler. Mostly, this schedules other
- stuff to run after an event is received. A CARD_REMOVAL event
- also sets some flags to discourage the serial drivers from
- talking to the ports.
-
-======================================================================*/
-
-static int serial_event(event_t event, int priority,
- event_callback_args_t *args)
-{
- dev_link_t *link = args->client_data;
- serial_info_t *info = link->priv;
-
- DEBUG(1, "serial_event(0x%06x)\n", event);
-
- switch (event) {
- case CS_EVENT_CARD_REMOVAL:
- link->state &= ~DEV_PRESENT;
- if (link->state & DEV_CONFIG)
- mod_timer(&link->release, jiffies + HZ/20);
- break;
- case CS_EVENT_CARD_INSERTION:
- link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
- serial_config(link);
- break;
- case CS_EVENT_PM_SUSPEND:
- link->state |= DEV_SUSPEND;
- /* Fall through... */
- case CS_EVENT_RESET_PHYSICAL:
- if ((link->state & DEV_CONFIG) && !info->slave)
- CardServices(ReleaseConfiguration, link->handle);
- break;
- case CS_EVENT_PM_RESUME:
- link->state &= ~DEV_SUSPEND;
- /* Fall through... */
- case CS_EVENT_CARD_RESET:
- if (DEV_OK(link) && !info->slave)
- CardServices(RequestConfiguration, link->handle, &link->conf);
- break;
- }
- return 0;
-} /* serial_event */
-
-/*====================================================================*/
-
-static int __init init_serial_cs(void)
-{
- servinfo_t serv;
- DEBUG(0, "%s\n", version);
- CardServices(GetCardServicesInfo, &serv);
- if (serv.Revision != CS_RELEASE_CODE) {
- printk(KERN_NOTICE "serial_cs: Card Services release "
- "does not match!\n");
- return -1;
- }
- register_pccard_driver(&dev_info, &serial_attach, &serial_detach);
- return 0;
-}
-
-static void __exit exit_serial_cs(void)
-{
- DEBUG(0, "serial_cs: unloading\n");
- unregister_pccard_driver(&dev_info);
- while (dev_list != NULL)
- serial_detach(dev_list);
-}
-
-module_init(init_serial_cs);
-module_exit(exit_serial_cs);
-
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * linux/drivers/char/serial.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997,
- * 1998, 1999 Theodore Ts'o
- *
- * Extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92. Now
- * much more extensible to support other serial cards based on the
- * 16450/16550A UART's. Added support for the AST FourPort and the
- * Accent Async board.
- *
- * set_serial_info fixed to set the flags, custom divisor, and uart
- * type fields. Fix suggested by Michael K. Johnson 12/12/92.
- *
- * 11/95: TIOCMIWAIT, TIOCGICOUNT by Angelo Haritsis <ah@doc.ic.ac.uk>
- *
- * 03/96: Modularised by Angelo Haritsis <ah@doc.ic.ac.uk>
- *
- * rs_set_termios fixed to look also for changes of the input
- * flags INPCK, BRKINT, PARMRK, IGNPAR and IGNBRK.
- * Bernd Anhäupl 05/17/96.
- *
- * 1/97: Extended dumb serial ports are a config option now.
- * Saves 4k. Michael A. Griffith <grif@acm.org>
- *
- * 8/97: Fix bug in rs_set_termios with RTS
- * Stanislav V. Voronyi <stas@uanet.kharkov.ua>
- *
- * 3/98: Change the IRQ detection, use of probe_irq_o*(),
- * suppress TIOCSERGWILD and TIOCSERSWILD
- * Etienne Lorrain <etienne.lorrain@ibm.net>
- *
- * 4/98: Added changes to support the ARM architecture proposed by
- * Russell King
- *
- * 5/99: Updated to include support for the XR16C850 and ST16C654
- * uarts. Stuart MacDonald <stuartm@connecttech.com>
- *
- * 8/99: Generalized PCI support added. Theodore Ts'o
- *
- * 3/00: Rid circular buffer of redundant xmit_cnt. Fix a
- * few races on freeing buffers too.
- * Alan Modra <alan@linuxcare.com>
- *
- * 5/00: Support for the RSA-DV II/S card added.
- * Kiyokazu SUTO <suto@ks-and-ks.ne.jp>
- *
- * 6/00: Remove old-style timer, use timer_list
- * Andrew Morton <andrewm@uow.edu.au>
- *
- * 7/00: Support Timedia/Sunix/Exsys PCI cards
- *
- * 7/00: fix some returns on failure not using MOD_DEC_USE_COUNT.
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
- *
- * 10/00: add in optional software flow control for serial console.
- * Kanoj Sarcar <kanoj@sgi.com> (Modified by Theodore Ts'o)
- *
- */
-
-static char *serial_version = "5.05c";
-static char *serial_revdate = "2001-07-08";
-
-/*
- * Serial driver configuration section. Here are the various options:
- *
- * CONFIG_HUB6
- * Enables support for the venerable Bell Technologies
- * HUB6 card.
- *
- * CONFIG_SERIAL_MANY_PORTS
- * Enables support for ports beyond the standard, stupid
- * COM 1/2/3/4.
- *
- * CONFIG_SERIAL_MULTIPORT
- * Enables support for special multiport board support.
- *
- * CONFIG_SERIAL_SHARE_IRQ
- * Enables support for multiple serial ports on one IRQ
- *
- * CONFIG_SERIAL_DETECT_IRQ
- * Enable the autodetection of IRQ on standart ports
- *
- * SERIAL_PARANOIA_CHECK
- * Check the magic number for the async_structure where
- * ever possible.
- *
- * CONFIG_SERIAL_ACPI
- * Enable support for serial console port and serial
- * debug port as defined by the SPCR and DBGP tables in
- * ACPI 2.0.
- */
-
-#include <linux/config.h>
-#include <linux/version.h>
-
-#undef SERIAL_PARANOIA_CHECK
-#define CONFIG_SERIAL_NOPAUSE_IO
-#define SERIAL_DO_RESTART
-
-#if 0
-/* These defines are normally controlled by the autoconf.h */
-#define CONFIG_SERIAL_MANY_PORTS
-#define CONFIG_SERIAL_SHARE_IRQ
-#define CONFIG_SERIAL_DETECT_IRQ
-#define CONFIG_SERIAL_MULTIPORT
-#define CONFIG_HUB6
-#endif
-
-#ifdef CONFIG_PCI
-#define ENABLE_SERIAL_PCI
-#ifndef CONFIG_SERIAL_SHARE_IRQ
-#define CONFIG_SERIAL_SHARE_IRQ
-#endif
-#ifndef CONFIG_SERIAL_MANY_PORTS
-#define CONFIG_SERIAL_MANY_PORTS
-#endif
-#endif
-
-#ifdef CONFIG_SERIAL_ACPI
-#define ENABLE_SERIAL_ACPI
-#endif
-
-
-/* Set of debugging defines */
-
-#undef SERIAL_DEBUG_INTR
-#undef SERIAL_DEBUG_OPEN
-#undef SERIAL_DEBUG_FLOW
-#undef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
-#undef SERIAL_DEBUG_PCI
-#undef SERIAL_DEBUG_AUTOCONF
-
-/* Sanity checks */
-
-#ifdef CONFIG_SERIAL_MULTIPORT
-#ifndef CONFIG_SERIAL_SHARE_IRQ
-#define CONFIG_SERIAL_SHARE_IRQ
-#endif
-#endif
-
-#ifdef CONFIG_HUB6
-#ifndef CONFIG_SERIAL_MANY_PORTS
-#define CONFIG_SERIAL_MANY_PORTS
-#endif
-#ifndef CONFIG_SERIAL_SHARE_IRQ
-#define CONFIG_SERIAL_SHARE_IRQ
-#endif
-#endif
-
-#ifdef MODULE
-#undef CONFIG_SERIAL_CONSOLE
-#endif
-
-#define CONFIG_SERIAL_RSA
-
-#define RS_STROBE_TIME (10*HZ)
-#define RS_ISR_PASS_LIMIT 256
-
-#if defined(__i386__) && (defined(CONFIG_M386) || defined(CONFIG_M486))
-#define SERIAL_INLINE
-#endif
-
-/*
- * End of serial driver configuration section.
- */
-
-#include <linux/module.h>
-
-#include <linux/types.h>
-#ifdef LOCAL_HEADERS
-#include "serial_local.h"
-#else
-#include <linux/serial.h>
-#include <linux/serialP.h>
-#include <linux/serial_reg.h>
-#include <asm/serial.h>
-#define LOCAL_VERSTRING ""
-#endif
-
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/major.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#if (LINUX_VERSION_CODE >= 131343)
-#include <linux/init.h>
-#endif
-#if (LINUX_VERSION_CODE >= 131336)
-#include <asm/uaccess.h>
-#endif
-#include <linux/delay.h>
-#ifdef CONFIG_SERIAL_CONSOLE
-#include <linux/console.h>
-#endif
-#ifdef ENABLE_SERIAL_PCI
-#include <linux/pci.h>
-#endif
-
-#include <linux/isapnp.h>
-#ifdef __ISAPNP__
-#ifndef ENABLE_SERIAL_PNP
-#define ENABLE_SERIAL_PNP
-#endif
-#endif
-
-#ifdef CONFIG_MAGIC_SYSRQ
-#include <linux/sysrq.h>
-#endif
-
-/*
- * All of the compatibilty code so we can compile serial.c against
- * older kernels is hidden in serial_compat.h
- */
-#if defined(LOCAL_HEADERS) || (LINUX_VERSION_CODE < 0x020317) /* 2.3.23 */
-#include "serial_compat.h"
-#endif
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/bitops.h>
-
-#ifdef CONFIG_MAC_SERIAL
-#define SERIAL_DEV_OFFSET 2
-#else
-#define SERIAL_DEV_OFFSET 0
-#endif
-
-#ifdef SERIAL_INLINE
-#define _INLINE_ inline
-#else
-#define _INLINE_
-#endif
-
-static char *serial_name = "Serial driver";
-
-static DECLARE_TASK_QUEUE(tq_serial);
-
-static struct tty_driver serial_driver, callout_driver;
-static int serial_refcount;
-
-static struct timer_list serial_timer;
-
-/* serial subtype definitions */
-#ifndef SERIAL_TYPE_NORMAL
-#define SERIAL_TYPE_NORMAL 1
-#define SERIAL_TYPE_CALLOUT 2
-#endif
-
-/* number of characters left in xmit buffer before we ask for more */
-#define WAKEUP_CHARS 256
-
-/*
- * IRQ_timeout - How long the timeout should be for each IRQ
- * should be after the IRQ has been active.
- */
-
-static struct async_struct *IRQ_ports[NR_IRQS];
-#ifdef CONFIG_SERIAL_MULTIPORT
-static struct rs_multiport_struct rs_multiport[NR_IRQS];
-#endif
-static int IRQ_timeout[NR_IRQS];
-#ifdef CONFIG_SERIAL_CONSOLE
-static struct console sercons;
-static int lsr_break_flag;
-#endif
-#if defined(CONFIG_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-static unsigned long break_pressed; /* break, really ... */
-#endif
-
-static unsigned detect_uart_irq (struct serial_state * state);
-static void autoconfig(struct serial_state * state);
-static void change_speed(struct async_struct *info, struct termios *old);
-static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
-
-/*
- * Here we define the default xmit fifo size used for each type of
- * UART
- */
-static struct serial_uart_config uart_config[] = {
- { "unknown", 1, 0 },
- { "8250", 1, 0 },
- { "16450", 1, 0 },
- { "16550", 1, 0 },
- { "16550A", 16, UART_CLEAR_FIFO | UART_USE_FIFO },
- { "cirrus", 1, 0 }, /* usurped by cyclades.c */
- { "ST16650", 1, UART_CLEAR_FIFO | UART_STARTECH },
- { "ST16650V2", 32, UART_CLEAR_FIFO | UART_USE_FIFO |
- UART_STARTECH },
- { "TI16750", 64, UART_CLEAR_FIFO | UART_USE_FIFO},
- { "Startech", 1, 0}, /* usurped by cyclades.c */
- { "16C950/954", 128, UART_CLEAR_FIFO | UART_USE_FIFO},
- { "ST16654", 64, UART_CLEAR_FIFO | UART_USE_FIFO |
- UART_STARTECH },
- { "XR16850", 128, UART_CLEAR_FIFO | UART_USE_FIFO |
- UART_STARTECH },
- { "RSA", 2048, UART_CLEAR_FIFO | UART_USE_FIFO },
- { 0, 0}
-};
-
-#if defined(CONFIG_SERIAL_RSA) && defined(MODULE)
-
-#define PORT_RSA_MAX 4
-static int probe_rsa[PORT_RSA_MAX];
-static int force_rsa[PORT_RSA_MAX];
-
-MODULE_PARM(probe_rsa, "1-" __MODULE_STRING(PORT_RSA_MAX) "i");
-MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA");
-MODULE_PARM(force_rsa, "1-" __MODULE_STRING(PORT_RSA_MAX) "i");
-MODULE_PARM_DESC(force_rsa, "Force I/O ports for RSA");
-#endif /* CONFIG_SERIAL_RSA */
-
-static struct serial_state rs_table[RS_TABLE_SIZE] = {
- SERIAL_PORT_DFNS /* Defined in serial.h */
-};
-
-#define NR_PORTS (sizeof(rs_table)/sizeof(struct serial_state))
-
-#if (defined(ENABLE_SERIAL_PCI) || defined(ENABLE_SERIAL_PNP))
-#define NR_PCI_BOARDS 8
-
-static struct pci_board_inst serial_pci_board[NR_PCI_BOARDS];
-
-#ifndef IS_PCI_REGION_IOPORT
-#define IS_PCI_REGION_IOPORT(dev, r) (pci_resource_flags((dev), (r)) & \
- IORESOURCE_IO)
-#endif
-#ifndef IS_PCI_REGION_IOMEM
-#define IS_PCI_REGION_IOMEM(dev, r) (pci_resource_flags((dev), (r)) & \
- IORESOURCE_MEM)
-#endif
-#ifndef PCI_IRQ_RESOURCE
-#define PCI_IRQ_RESOURCE(dev, r) ((dev)->irq_resource[r].start)
-#endif
-#ifndef pci_get_subvendor
-#define pci_get_subvendor(dev) ((dev)->subsystem_vendor)
-#define pci_get_subdevice(dev) ((dev)->subsystem_device)
-#endif
-#endif /* ENABLE_SERIAL_PCI || ENABLE_SERIAL_PNP */
-
-#ifndef PREPARE_FUNC
-#define PREPARE_FUNC(dev) (dev->prepare)
-#define ACTIVATE_FUNC(dev) (dev->activate)
-#define DEACTIVATE_FUNC(dev) (dev->deactivate)
-#endif
-
-#define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8)
-
-static struct tty_struct *serial_table[NR_PORTS];
-static struct termios *serial_termios[NR_PORTS];
-static struct termios *serial_termios_locked[NR_PORTS];
-
-
-#if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT)
-#define DBG_CNT(s) printk("(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \
- kdevname(tty->device), (info->flags), serial_refcount,info->count,tty->count,s)
-#else
-#define DBG_CNT(s)
-#endif
-
-/*
- * tmp_buf is used as a temporary buffer by serial_write. We need to
- * lock it in case the copy_from_user blocks while swapping in a page,
- * and some other program tries to do a serial write at the same time.
- * Since the lock will only come under contention when the system is
- * swapping and available memory is low, it makes sense to share one
- * buffer across all the serial ports, since it significantly saves
- * memory if large numbers of serial ports are open.
- */
-static unsigned char *tmp_buf;
-#ifdef DECLARE_MUTEX
-static DECLARE_MUTEX(tmp_buf_sem);
-#else
-static struct semaphore tmp_buf_sem = MUTEX;
-#endif
-
-
-static inline int serial_paranoia_check(struct async_struct *info,
- kdev_t device, const char *routine)
-{
-#ifdef SERIAL_PARANOIA_CHECK
- static const char *badmagic =
- "Warning: bad magic number for serial struct (%s) in %s\n";
- static const char *badinfo =
- "Warning: null async_struct for (%s) in %s\n";
-
- if (!info) {
- printk(badinfo, kdevname(device), routine);
- return 1;
- }
- if (info->magic != SERIAL_MAGIC) {
- printk(badmagic, kdevname(device), routine);
- return 1;
- }
-#endif
- return 0;
-}
-
-static _INLINE_ unsigned int serial_in(struct async_struct *info, int offset)
-{
- switch (info->io_type) {
-#ifdef CONFIG_HUB6
- case SERIAL_IO_HUB6:
- outb(info->hub6 - 1 + offset, info->port);
- return inb(info->port+1);
-#endif
- case SERIAL_IO_MEM:
- return readb((unsigned long) info->iomem_base +
- (offset<<info->iomem_reg_shift));
-#ifdef CONFIG_SERIAL_GSC
- case SERIAL_IO_GSC:
- return gsc_readb(info->iomem_base + offset);
-#endif
- default:
- return inb(info->port + offset);
- }
-}
-
-static _INLINE_ void serial_out(struct async_struct *info, int offset,
- int value)
-{
- switch (info->io_type) {
-#ifdef CONFIG_HUB6
- case SERIAL_IO_HUB6:
- outb(info->hub6 - 1 + offset, info->port);
- outb(value, info->port+1);
- break;
-#endif
- case SERIAL_IO_MEM:
- writeb(value, (unsigned long) info->iomem_base +
- (offset<<info->iomem_reg_shift));
- break;
-#ifdef CONFIG_SERIAL_GSC
- case SERIAL_IO_GSC:
- gsc_writeb(value, info->iomem_base + offset);
- break;
-#endif
- default:
- outb(value, info->port+offset);
- }
-}
-
-/*
- * We used to support using pause I/O for certain machines. We
- * haven't supported this for a while, but just in case it's badly
- * needed for certain old 386 machines, I've left these #define's
- * in....
- */
-#define serial_inp(info, offset) serial_in(info, offset)
-#define serial_outp(info, offset, value) serial_out(info, offset, value)
-
-
-/*
- * For the 16C950
- */
-void serial_icr_write(struct async_struct *info, int offset, int value)
-{
- serial_out(info, UART_SCR, offset);
- serial_out(info, UART_ICR, value);
-}
-
-unsigned int serial_icr_read(struct async_struct *info, int offset)
-{
- int value;
-
- serial_icr_write(info, UART_ACR, info->ACR | UART_ACR_ICRRD);
- serial_out(info, UART_SCR, offset);
- value = serial_in(info, UART_ICR);
- serial_icr_write(info, UART_ACR, info->ACR);
- return value;
-}
-
-/*
- * ------------------------------------------------------------
- * rs_stop() and rs_start()
- *
- * This routines are called before setting or resetting tty->stopped.
- * They enable or disable transmitter interrupts, as necessary.
- * ------------------------------------------------------------
- */
-static void rs_stop(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "rs_stop"))
- return;
-
- save_flags(flags); cli();
- if (info->IER & UART_IER_THRI) {
- info->IER &= ~UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- }
- if (info->state->type == PORT_16C950) {
- info->ACR |= UART_ACR_TXDIS;
- serial_icr_write(info, UART_ACR, info->ACR);
- }
- restore_flags(flags);
-}
-
-static void rs_start(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "rs_start"))
- return;
-
- save_flags(flags); cli();
- if (info->xmit.head != info->xmit.tail
- && info->xmit.buf
- && !(info->IER & UART_IER_THRI)) {
- info->IER |= UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- }
- if (info->state->type == PORT_16C950) {
- info->ACR &= ~UART_ACR_TXDIS;
- serial_icr_write(info, UART_ACR, info->ACR);
- }
- restore_flags(flags);
-}
-
-/*
- * ----------------------------------------------------------------------
- *
- * Here starts the interrupt handling routines. All of the following
- * subroutines are declared as inline and are folded into
- * rs_interrupt(). They were separated out for readability's sake.
- *
- * Note: rs_interrupt() is a "fast" interrupt, which means that it
- * runs with interrupts turned off. People who may want to modify
- * rs_interrupt() should try to keep the interrupt handler as fast as
- * possible. After you are done making modifications, it is not a bad
- * idea to do:
- *
- * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c
- *
- * and look at the resulting assemble code in serial.s.
- *
- * - Ted Ts'o (tytso@mit.edu), 7-Mar-93
- * -----------------------------------------------------------------------
- */
-
-/*
- * This routine is used by the interrupt handler to schedule
- * processing in the software interrupt portion of the driver.
- */
-static _INLINE_ void rs_sched_event(struct async_struct *info,
- int event)
-{
- info->event |= 1 << event;
- queue_task(&info->tqueue, &tq_serial);
- mark_bh(SERIAL_BH);
-}
-
-static _INLINE_ void receive_chars(struct async_struct *info,
- int *status, struct pt_regs * regs)
-{
- struct tty_struct *tty = info->tty;
- unsigned char ch;
- struct async_icount *icount;
- int max_count = 256;
-
- icount = &info->state->icount;
- do {
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
- tty->flip.tqueue.routine((void *) tty);
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- return; // if TTY_DONT_FLIP is set
- }
- ch = serial_inp(info, UART_RX);
- *tty->flip.char_buf_ptr = ch;
- icount->rx++;
-
-#ifdef SERIAL_DEBUG_INTR
- printk("DR%02x:%02x...", ch, *status);
-#endif
- *tty->flip.flag_buf_ptr = 0;
- if (*status & (UART_LSR_BI | UART_LSR_PE |
- UART_LSR_FE | UART_LSR_OE)) {
- /*
- * For statistics only
- */
- if (*status & UART_LSR_BI) {
- *status &= ~(UART_LSR_FE | UART_LSR_PE);
- icount->brk++;
- /*
- * We do the SysRQ and SAK checking
- * here because otherwise the break
- * may get masked by ignore_status_mask
- * or read_status_mask.
- */
-#if defined(CONFIG_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
- if (info->line == sercons.index) {
- if (!break_pressed) {
- break_pressed = jiffies;
- goto ignore_char;
- }
- break_pressed = 0;
- }
-#endif
- if (info->flags & ASYNC_SAK)
- do_SAK(tty);
- } else if (*status & UART_LSR_PE)
- icount->parity++;
- else if (*status & UART_LSR_FE)
- icount->frame++;
- if (*status & UART_LSR_OE)
- icount->overrun++;
-
- /*
- * Mask off conditions which should be ignored.
- */
- *status &= info->read_status_mask;
-
-#ifdef CONFIG_SERIAL_CONSOLE
- if (info->line == sercons.index) {
- /* Recover the break flag from console xmit */
- *status |= lsr_break_flag;
- lsr_break_flag = 0;
- }
-#endif
- if (*status & (UART_LSR_BI)) {
-#ifdef SERIAL_DEBUG_INTR
- printk("handling break....");
-#endif
- *tty->flip.flag_buf_ptr = TTY_BREAK;
- } else if (*status & UART_LSR_PE)
- *tty->flip.flag_buf_ptr = TTY_PARITY;
- else if (*status & UART_LSR_FE)
- *tty->flip.flag_buf_ptr = TTY_FRAME;
- }
-#if defined(CONFIG_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
- if (break_pressed && info->line == sercons.index) {
- if (ch != 0 &&
- time_before(jiffies, break_pressed + HZ*5)) {
- handle_sysrq(ch, regs, NULL);
- break_pressed = 0;
- goto ignore_char;
- }
- break_pressed = 0;
- }
-#endif
- if ((*status & info->ignore_status_mask) == 0) {
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
- }
- if ((*status & UART_LSR_OE) &&
- (tty->flip.count < TTY_FLIPBUF_SIZE)) {
- /*
- * Overrun is special, since it's reported
- * immediately, and doesn't affect the current
- * character
- */
- *tty->flip.flag_buf_ptr = TTY_OVERRUN;
- tty->flip.count++;
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- }
-#if defined(CONFIG_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
- ignore_char:
-#endif
- *status = serial_inp(info, UART_LSR);
- } while ((*status & UART_LSR_DR) && (max_count-- > 0));
-#if (LINUX_VERSION_CODE > 131394) /* 2.1.66 */
- tty_flip_buffer_push(tty);
-#else
- queue_task_irq_off(&tty->flip.tqueue, &tq_timer);
-#endif
-}
-
-static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
-{
- int count;
-
- if (info->x_char) {
- serial_outp(info, UART_TX, info->x_char);
- info->state->icount.tx++;
- info->x_char = 0;
- if (intr_done)
- *intr_done = 0;
- return;
- }
- if (info->xmit.head == info->xmit.tail
- || info->tty->stopped
- || info->tty->hw_stopped) {
- info->IER &= ~UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- return;
- }
-
- count = info->xmit_fifo_size;
- do {
- serial_out(info, UART_TX, info->xmit.buf[info->xmit.tail]);
- info->xmit.tail = (info->xmit.tail + 1) & (SERIAL_XMIT_SIZE-1);
- info->state->icount.tx++;
- if (info->xmit.head == info->xmit.tail)
- break;
- } while (--count > 0);
-
- if (CIRC_CNT(info->xmit.head,
- info->xmit.tail,
- SERIAL_XMIT_SIZE) < WAKEUP_CHARS)
- rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
-
-#ifdef SERIAL_DEBUG_INTR
- printk("THRE...");
-#endif
- if (intr_done)
- *intr_done = 0;
-
- if (info->xmit.head == info->xmit.tail) {
- info->IER &= ~UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- }
-}
-
-static _INLINE_ void check_modem_status(struct async_struct *info)
-{
- int status;
- struct async_icount *icount;
-
- status = serial_in(info, UART_MSR);
-
- if (status & UART_MSR_ANY_DELTA) {
- icount = &info->state->icount;
- /* update input line counters */
- if (status & UART_MSR_TERI)
- icount->rng++;
- if (status & UART_MSR_DDSR)
- icount->dsr++;
- if (status & UART_MSR_DDCD) {
- icount->dcd++;
-#ifdef CONFIG_HARD_PPS
- if ((info->flags & ASYNC_HARDPPS_CD) &&
- (status & UART_MSR_DCD))
- hardpps();
-#endif
- }
- if (status & UART_MSR_DCTS)
- icount->cts++;
- wake_up_interruptible(&info->delta_msr_wait);
- }
-
- if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
-#if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR))
- printk("ttys%d CD now %s...", info->line,
- (status & UART_MSR_DCD) ? "on" : "off");
-#endif
- if (status & UART_MSR_DCD)
- wake_up_interruptible(&info->open_wait);
- else if (!((info->flags & ASYNC_CALLOUT_ACTIVE) &&
- (info->flags & ASYNC_CALLOUT_NOHUP))) {
-#ifdef SERIAL_DEBUG_OPEN
- printk("doing serial hangup...");
-#endif
- if (info->tty)
- tty_hangup(info->tty);
- }
- }
- if (info->flags & ASYNC_CTS_FLOW) {
- if (info->tty->hw_stopped) {
- if (status & UART_MSR_CTS) {
-#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW))
- printk("CTS tx start...");
-#endif
- info->tty->hw_stopped = 0;
- info->IER |= UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
- return;
- }
- } else {
- if (!(status & UART_MSR_CTS)) {
-#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW))
- printk("CTS tx stop...");
-#endif
- info->tty->hw_stopped = 1;
- info->IER &= ~UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- }
- }
- }
-}
-
-#ifdef CONFIG_SERIAL_SHARE_IRQ
-/*
- * This is the serial driver's generic interrupt routine
- */
-static void rs_interrupt(int irq, void *dev_id, struct pt_regs * regs)
-{
- int status;
- struct async_struct * info;
- int pass_counter = 0;
- struct async_struct *end_mark = 0;
-#ifdef CONFIG_SERIAL_MULTIPORT
- int first_multi = 0;
- struct rs_multiport_struct *multi;
-#endif
-
-#ifdef SERIAL_DEBUG_INTR
- printk("rs_interrupt(%d)...", irq);
-#endif
-
- info = IRQ_ports[irq];
- if (!info)
- return;
-
-#ifdef CONFIG_SERIAL_MULTIPORT
- multi = &rs_multiport[irq];
- if (multi->port_monitor)
- first_multi = inb(multi->port_monitor);
-#endif
-
- do {
- if (!info->tty ||
- (serial_in(info, UART_IIR) & UART_IIR_NO_INT)) {
- if (!end_mark)
- end_mark = info;
- goto next;
- }
-#ifdef SERIAL_DEBUG_INTR
- printk("IIR = %x...", serial_in(info, UART_IIR));
-#endif
- end_mark = 0;
-
- info->last_active = jiffies;
-
- status = serial_inp(info, UART_LSR);
-#ifdef SERIAL_DEBUG_INTR
- printk("status = %x...", status);
-#endif
- if (status & UART_LSR_DR)
- receive_chars(info, &status, regs);
- check_modem_status(info);
- if (status & UART_LSR_THRE)
- transmit_chars(info, 0);
-
- next:
- info = info->next_port;
- if (!info) {
- info = IRQ_ports[irq];
- if (pass_counter++ > RS_ISR_PASS_LIMIT) {
-#if 0
- printk("rs loop break\n");
-#endif
- break; /* Prevent infinite loops */
- }
- continue;
- }
- } while (end_mark != info);
-#ifdef CONFIG_SERIAL_MULTIPORT
- if (multi->port_monitor)
- printk("rs port monitor (normal) irq %d: 0x%x, 0x%x\n",
- info->state->irq, first_multi,
- inb(multi->port_monitor));
-#endif
-#ifdef SERIAL_DEBUG_INTR
- printk("end.\n");
-#endif
-}
-#endif /* #ifdef CONFIG_SERIAL_SHARE_IRQ */
-
-
-/*
- * This is the serial driver's interrupt routine for a single port
- */
-static void rs_interrupt_single(int irq, void *dev_id, struct pt_regs * regs)
-{
- int status;
- int pass_counter = 0;
- struct async_struct * info;
-#ifdef CONFIG_SERIAL_MULTIPORT
- int first_multi = 0;
- struct rs_multiport_struct *multi;
-#endif
-
-#ifdef SERIAL_DEBUG_INTR
- printk("rs_interrupt_single(%d)...", irq);
-#endif
-
- info = IRQ_ports[irq];
- if (!info || !info->tty)
- return;
-
-#ifdef CONFIG_SERIAL_MULTIPORT
- multi = &rs_multiport[irq];
- if (multi->port_monitor)
- first_multi = inb(multi->port_monitor);
-#endif
-
- do {
- status = serial_inp(info, UART_LSR);
-#ifdef SERIAL_DEBUG_INTR
- printk("status = %x...", status);
-#endif
- if (status & UART_LSR_DR)
- receive_chars(info, &status, regs);
- check_modem_status(info);
- if (status & UART_LSR_THRE)
- transmit_chars(info, 0);
- if (pass_counter++ > RS_ISR_PASS_LIMIT) {
-#if 0
- printk("rs_single loop break.\n");
-#endif
- break;
- }
-#ifdef SERIAL_DEBUG_INTR
- printk("IIR = %x...", serial_in(info, UART_IIR));
-#endif
- } while (!(serial_in(info, UART_IIR) & UART_IIR_NO_INT));
- info->last_active = jiffies;
-#ifdef CONFIG_SERIAL_MULTIPORT
- if (multi->port_monitor)
- printk("rs port monitor (single) irq %d: 0x%x, 0x%x\n",
- info->state->irq, first_multi,
- inb(multi->port_monitor));
-#endif
-#ifdef SERIAL_DEBUG_INTR
- printk("end.\n");
-#endif
-}
-
-#ifdef CONFIG_SERIAL_MULTIPORT
-/*
- * This is the serial driver's for multiport boards
- */
-static void rs_interrupt_multi(int irq, void *dev_id, struct pt_regs * regs)
-{
- int status;
- struct async_struct * info;
- int pass_counter = 0;
- int first_multi= 0;
- struct rs_multiport_struct *multi;
-
-#ifdef SERIAL_DEBUG_INTR
- printk("rs_interrupt_multi(%d)...", irq);
-#endif
-
- info = IRQ_ports[irq];
- if (!info)
- return;
- multi = &rs_multiport[irq];
- if (!multi->port1) {
- /* Should never happen */
- printk("rs_interrupt_multi: NULL port1!\n");
- return;
- }
- if (multi->port_monitor)
- first_multi = inb(multi->port_monitor);
-
- while (1) {
- if (!info->tty ||
- (serial_in(info, UART_IIR) & UART_IIR_NO_INT))
- goto next;
-
- info->last_active = jiffies;
-
- status = serial_inp(info, UART_LSR);
-#ifdef SERIAL_DEBUG_INTR
- printk("status = %x...", status);
-#endif
- if (status & UART_LSR_DR)
- receive_chars(info, &status, regs);
- check_modem_status(info);
- if (status & UART_LSR_THRE)
- transmit_chars(info, 0);
-
- next:
- info = info->next_port;
- if (info)
- continue;
-
- info = IRQ_ports[irq];
- /*
- * The user was a bonehead, and misconfigured their
- * multiport info. Rather than lock up the kernel
- * in an infinite loop, if we loop too many times,
- * print a message and break out of the loop.
- */
- if (pass_counter++ > RS_ISR_PASS_LIMIT) {
- printk("Misconfigured multiport serial info "
- "for irq %d. Breaking out irq loop\n", irq);
- break;
- }
- if (multi->port_monitor)
- printk("rs port monitor irq %d: 0x%x, 0x%x\n",
- info->state->irq, first_multi,
- inb(multi->port_monitor));
- if ((inb(multi->port1) & multi->mask1) != multi->match1)
- continue;
- if (!multi->port2)
- break;
- if ((inb(multi->port2) & multi->mask2) != multi->match2)
- continue;
- if (!multi->port3)
- break;
- if ((inb(multi->port3) & multi->mask3) != multi->match3)
- continue;
- if (!multi->port4)
- break;
- if ((inb(multi->port4) & multi->mask4) != multi->match4)
- continue;
- break;
- }
-#ifdef SERIAL_DEBUG_INTR
- printk("end.\n");
-#endif
-}
-#endif
-
-/*
- * -------------------------------------------------------------------
- * Here ends the serial interrupt routines.
- * -------------------------------------------------------------------
- */
-
-/*
- * This routine is used to handle the "bottom half" processing for the
- * serial driver, known also the "software interrupt" processing.
- * This processing is done at the kernel interrupt level, after the
- * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This
- * is where time-consuming activities which can not be done in the
- * interrupt driver proper are done; the interrupt driver schedules
- * them using rs_sched_event(), and they get done here.
- */
-static void do_serial_bh(void)
-{
- run_task_queue(&tq_serial);
-}
-
-static void do_softint(void *private_)
-{
- struct async_struct *info = (struct async_struct *) private_;
- struct tty_struct *tty;
-
- tty = info->tty;
- if (!tty)
- return;
-
- if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
- wake_up_interruptible(&tty->write_wait);
-#ifdef SERIAL_HAVE_POLL_WAIT
- wake_up_interruptible(&tty->poll_wait);
-#endif
- }
-}
-
-/*
- * This subroutine is called when the RS_TIMER goes off. It is used
- * by the serial driver to handle ports that do not have an interrupt
- * (irq=0). This doesn't work very well for 16450's, but gives barely
- * passable results for a 16550A. (Although at the expense of much
- * CPU overhead).
- */
-static void rs_timer(unsigned long dummy)
-{
- static unsigned long last_strobe;
- struct async_struct *info;
- unsigned int i;
- unsigned long flags;
-
- if ((jiffies - last_strobe) >= RS_STROBE_TIME) {
- for (i=0; i < NR_IRQS; i++) {
- info = IRQ_ports[i];
- if (!info)
- continue;
- save_flags(flags); cli();
-#ifdef CONFIG_SERIAL_SHARE_IRQ
- if (info->next_port) {
- do {
- serial_out(info, UART_IER, 0);
- info->IER |= UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- info = info->next_port;
- } while (info);
-#ifdef CONFIG_SERIAL_MULTIPORT
- if (rs_multiport[i].port1)
- rs_interrupt_multi(i, NULL, NULL);
- else
-#endif
- rs_interrupt(i, NULL, NULL);
- } else
-#endif /* CONFIG_SERIAL_SHARE_IRQ */
- rs_interrupt_single(i, NULL, NULL);
- restore_flags(flags);
- }
- }
- last_strobe = jiffies;
- mod_timer(&serial_timer, jiffies + RS_STROBE_TIME);
-
- if (IRQ_ports[0]) {
- save_flags(flags); cli();
-#ifdef CONFIG_SERIAL_SHARE_IRQ
- rs_interrupt(0, NULL, NULL);
-#else
- rs_interrupt_single(0, NULL, NULL);
-#endif
- restore_flags(flags);
-
- mod_timer(&serial_timer, jiffies + IRQ_timeout[0]);
- }
-}
-
-/*
- * ---------------------------------------------------------------
- * Low level utility subroutines for the serial driver: routines to
- * figure out the appropriate timeout for an interrupt chain, routines
- * to initialize and startup a serial port, and routines to shutdown a
- * serial port. Useful stuff like that.
- * ---------------------------------------------------------------
- */
-
-/*
- * This routine figures out the correct timeout for a particular IRQ.
- * It uses the smallest timeout of all of the serial ports in a
- * particular interrupt chain. Now only used for IRQ 0....
- */
-static void figure_IRQ_timeout(int irq)
-{
- struct async_struct *info;
- int timeout = 60*HZ; /* 60 seconds === a long time :-) */
-
- info = IRQ_ports[irq];
- if (!info) {
- IRQ_timeout[irq] = 60*HZ;
- return;
- }
- while (info) {
- if (info->timeout < timeout)
- timeout = info->timeout;
- info = info->next_port;
- }
- if (!irq)
- timeout = timeout / 2;
- IRQ_timeout[irq] = (timeout > 3) ? timeout-2 : 1;
-}
-
-#ifdef CONFIG_SERIAL_RSA
-/* Attempts to turn on the RSA FIFO. Returns zero on failure */
-static int enable_rsa(struct async_struct *info)
-{
- unsigned char mode;
- int result;
- unsigned long flags;
-
- save_flags(flags); cli();
- mode = serial_inp(info, UART_RSA_MSR);
- result = mode & UART_RSA_MSR_FIFO;
-
- if (!result) {
- serial_outp(info, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO);
- mode = serial_inp(info, UART_RSA_MSR);
- result = mode & UART_RSA_MSR_FIFO;
- }
-
- restore_flags(flags);
- return result;
-}
-
-/* Attempts to turn off the RSA FIFO. Returns zero on failure */
-static int disable_rsa(struct async_struct *info)
-{
- unsigned char mode;
- int result;
- unsigned long flags;
-
- save_flags(flags); cli();
- mode = serial_inp(info, UART_RSA_MSR);
- result = !(mode & UART_RSA_MSR_FIFO);
-
- if (!result) {
- serial_outp(info, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO);
- mode = serial_inp(info, UART_RSA_MSR);
- result = !(mode & UART_RSA_MSR_FIFO);
- }
-
- restore_flags(flags);
- return result;
-}
-#endif /* CONFIG_SERIAL_RSA */
-
-static int startup(struct async_struct * info)
-{
- unsigned long flags;
- int retval=0;
- void (*handler)(int, void *, struct pt_regs *);
- struct serial_state *state= info->state;
- unsigned long page;
-#ifdef CONFIG_SERIAL_MANY_PORTS
- unsigned short ICP;
-#endif
-
- page = get_zeroed_page(GFP_KERNEL);
- if (!page)
- return -ENOMEM;
-
- save_flags(flags); cli();
-
- if (info->flags & ASYNC_INITIALIZED) {
- free_page(page);
- goto errout;
- }
-
- if (!CONFIGURED_SERIAL_PORT(state) || !state->type) {
- if (info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
- free_page(page);
- goto errout;
- }
- if (info->xmit.buf)
- free_page(page);
- else
- info->xmit.buf = (unsigned char *) page;
-
-#ifdef SERIAL_DEBUG_OPEN
- printk("starting up ttys%d (irq %d)...", info->line, state->irq);
-#endif
-
- if (uart_config[state->type].flags & UART_STARTECH) {
- /* Wake up UART */
- serial_outp(info, UART_LCR, 0xBF);
- serial_outp(info, UART_EFR, UART_EFR_ECB);
- /*
- * Turn off LCR == 0xBF so we actually set the IER
- * register on the XR16C850
- */
- serial_outp(info, UART_LCR, 0);
- serial_outp(info, UART_IER, 0);
- /*
- * Now reset LCR so we can turn off the ECB bit
- */
- serial_outp(info, UART_LCR, 0xBF);
- serial_outp(info, UART_EFR, 0);
- /*
- * For a XR16C850, we need to set the trigger levels
- */
- if (state->type == PORT_16850) {
- serial_outp(info, UART_FCTR, UART_FCTR_TRGD |
- UART_FCTR_RX);
- serial_outp(info, UART_TRG, UART_TRG_96);
- serial_outp(info, UART_FCTR, UART_FCTR_TRGD |
- UART_FCTR_TX);
- serial_outp(info, UART_TRG, UART_TRG_96);
- }
- serial_outp(info, UART_LCR, 0);
- }
-
- if (state->type == PORT_16750) {
- /* Wake up UART */
- serial_outp(info, UART_IER, 0);
- }
-
- if (state->type == PORT_16C950) {
- /* Wake up and initialize UART */
- info->ACR = 0;
- serial_outp(info, UART_LCR, 0xBF);
- serial_outp(info, UART_EFR, UART_EFR_ECB);
- serial_outp(info, UART_IER, 0);
- serial_outp(info, UART_LCR, 0);
- serial_icr_write(info, UART_CSR, 0); /* Reset the UART */
- serial_outp(info, UART_LCR, 0xBF);
- serial_outp(info, UART_EFR, UART_EFR_ECB);
- serial_outp(info, UART_LCR, 0);
- }
-
-#ifdef CONFIG_SERIAL_RSA
- /*
- * If this is an RSA port, see if we can kick it up to the
- * higher speed clock.
- */
- if (state->type == PORT_RSA) {
- if (state->baud_base != SERIAL_RSA_BAUD_BASE &&
- enable_rsa(info))
- state->baud_base = SERIAL_RSA_BAUD_BASE;
- if (state->baud_base == SERIAL_RSA_BAUD_BASE)
- serial_outp(info, UART_RSA_FRR, 0);
- }
-#endif
-
- /*
- * Clear the FIFO buffers and disable them
- * (they will be reenabled in change_speed())
- */
- if (uart_config[state->type].flags & UART_CLEAR_FIFO) {
- serial_outp(info, UART_FCR, UART_FCR_ENABLE_FIFO);
- serial_outp(info, UART_FCR, (UART_FCR_ENABLE_FIFO |
- UART_FCR_CLEAR_RCVR |
- UART_FCR_CLEAR_XMIT));
- serial_outp(info, UART_FCR, 0);
- }
-
- /*
- * Clear the interrupt registers.
- */
- (void) serial_inp(info, UART_LSR);
- (void) serial_inp(info, UART_RX);
- (void) serial_inp(info, UART_IIR);
- (void) serial_inp(info, UART_MSR);
-
- /*
- * At this point there's no way the LSR could still be 0xFF;
- * if it is, then bail out, because there's likely no UART
- * here.
- */
- if (!(info->flags & ASYNC_BUGGY_UART) &&
- (serial_inp(info, UART_LSR) == 0xff)) {
- printk("ttyS%d: LSR safety check engaged!\n", state->line);
- if (capable(CAP_SYS_ADMIN)) {
- if (info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
- } else
- retval = -ENODEV;
- goto errout;
- }
-
- /*
- * Allocate the IRQ if necessary
- */
- if (state->irq && (!IRQ_ports[state->irq] ||
- !IRQ_ports[state->irq]->next_port)) {
- if (IRQ_ports[state->irq]) {
-#ifdef CONFIG_SERIAL_SHARE_IRQ
- free_irq(state->irq, &IRQ_ports[state->irq]);
-#ifdef CONFIG_SERIAL_MULTIPORT
- if (rs_multiport[state->irq].port1)
- handler = rs_interrupt_multi;
- else
-#endif
- handler = rs_interrupt;
-#else
- retval = -EBUSY;
- goto errout;
-#endif /* CONFIG_SERIAL_SHARE_IRQ */
- } else
- handler = rs_interrupt_single;
-
- retval = request_irq(state->irq, handler, SA_SHIRQ,
- "serial", &IRQ_ports[state->irq]);
- if (retval) {
- if (capable(CAP_SYS_ADMIN)) {
- if (info->tty)
- set_bit(TTY_IO_ERROR,
- &info->tty->flags);
- retval = 0;
- }
- goto errout;
- }
- }
-
- /*
- * Insert serial port into IRQ chain.
- */
- info->prev_port = 0;
- info->next_port = IRQ_ports[state->irq];
- if (info->next_port)
- info->next_port->prev_port = info;
- IRQ_ports[state->irq] = info;
- figure_IRQ_timeout(state->irq);
-
- /*
- * Now, initialize the UART
- */
- serial_outp(info, UART_LCR, UART_LCR_WLEN8); /* reset DLAB */
-
- info->MCR = 0;
- if (info->tty->termios->c_cflag & CBAUD)
- info->MCR = UART_MCR_DTR | UART_MCR_RTS;
-#ifdef CONFIG_SERIAL_MANY_PORTS
- if (info->flags & ASYNC_FOURPORT) {
- if (state->irq == 0)
- info->MCR |= UART_MCR_OUT1;
- } else
-#endif
- {
- if (state->irq != 0)
- info->MCR |= UART_MCR_OUT2;
- }
- info->MCR |= ALPHA_KLUDGE_MCR; /* Don't ask */
- serial_outp(info, UART_MCR, info->MCR);
-
- /*
- * Finally, enable interrupts
- */
- info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
- serial_outp(info, UART_IER, info->IER); /* enable interrupts */
-
-#ifdef CONFIG_SERIAL_MANY_PORTS
- if (info->flags & ASYNC_FOURPORT) {
- /* Enable interrupts on the AST Fourport board */
- ICP = (info->port & 0xFE0) | 0x01F;
- outb_p(0x80, ICP);
- (void) inb_p(ICP);
- }
-#endif
-
- /*
- * And clear the interrupt registers again for luck.
- */
- (void)serial_inp(info, UART_LSR);
- (void)serial_inp(info, UART_RX);
- (void)serial_inp(info, UART_IIR);
- (void)serial_inp(info, UART_MSR);
-
- if (info->tty)
- clear_bit(TTY_IO_ERROR, &info->tty->flags);
- info->xmit.head = info->xmit.tail = 0;
-
- /*
- * Set up serial timers...
- */
- mod_timer(&serial_timer, jiffies + 2*HZ/100);
-
- /*
- * Set up the tty->alt_speed kludge
- */
-#if (LINUX_VERSION_CODE >= 131394) /* Linux 2.1.66 */
- if (info->tty) {
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
- info->tty->alt_speed = 57600;
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
- info->tty->alt_speed = 115200;
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
- info->tty->alt_speed = 230400;
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
- info->tty->alt_speed = 460800;
- }
-#endif
-
- /*
- * and set the speed of the serial port
- */
- change_speed(info, 0);
-
- info->flags |= ASYNC_INITIALIZED;
- restore_flags(flags);
- return 0;
-
-errout:
- restore_flags(flags);
- return retval;
-}
-
-/*
- * This routine will shutdown a serial port; interrupts are disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
- */
-static void shutdown(struct async_struct * info)
-{
- unsigned long flags;
- struct serial_state *state;
- int retval;
-
- if (!(info->flags & ASYNC_INITIALIZED))
- return;
-
- state = info->state;
-
-#ifdef SERIAL_DEBUG_OPEN
- printk("Shutting down serial port %d (irq %d)....", info->line,
- state->irq);
-#endif
-
- save_flags(flags); cli(); /* Disable interrupts */
-
- /*
- * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
- * here so the queue might never be waken up
- */
- wake_up_interruptible(&info->delta_msr_wait);
-
- /*
- * First unlink the serial port from the IRQ chain...
- */
- if (info->next_port)
- info->next_port->prev_port = info->prev_port;
- if (info->prev_port)
- info->prev_port->next_port = info->next_port;
- else
- IRQ_ports[state->irq] = info->next_port;
- figure_IRQ_timeout(state->irq);
-
- /*
- * Free the IRQ, if necessary
- */
- if (state->irq && (!IRQ_ports[state->irq] ||
- !IRQ_ports[state->irq]->next_port)) {
- if (IRQ_ports[state->irq]) {
- free_irq(state->irq, &IRQ_ports[state->irq]);
- retval = request_irq(state->irq, rs_interrupt_single,
- SA_SHIRQ, "serial",
- &IRQ_ports[state->irq]);
-
- if (retval)
- printk("serial shutdown: request_irq: error %d"
- " Couldn't reacquire IRQ.\n", retval);
- } else
- free_irq(state->irq, &IRQ_ports[state->irq]);
- }
-
- if (info->xmit.buf) {
- unsigned long pg = (unsigned long) info->xmit.buf;
- info->xmit.buf = 0;
- free_page(pg);
- }
-
- info->IER = 0;
- serial_outp(info, UART_IER, 0x00); /* disable all intrs */
-#ifdef CONFIG_SERIAL_MANY_PORTS
- if (info->flags & ASYNC_FOURPORT) {
- /* reset interrupts on the AST Fourport board */
- (void) inb((info->port & 0xFE0) | 0x01F);
- info->MCR |= UART_MCR_OUT1;
- } else
-#endif
- info->MCR &= ~UART_MCR_OUT2;
- info->MCR |= ALPHA_KLUDGE_MCR; /* Don't ask */
-
- /* disable break condition */
- serial_out(info, UART_LCR, serial_inp(info, UART_LCR) & ~UART_LCR_SBC);
-
- if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
- info->MCR &= ~(UART_MCR_DTR|UART_MCR_RTS);
- serial_outp(info, UART_MCR, info->MCR);
-
- /* disable FIFO's */
- serial_outp(info, UART_FCR, (UART_FCR_ENABLE_FIFO |
- UART_FCR_CLEAR_RCVR |
- UART_FCR_CLEAR_XMIT));
- serial_outp(info, UART_FCR, 0);
-
-#ifdef CONFIG_SERIAL_RSA
- /*
- * Reset the RSA board back to 115kbps compat mode.
- */
- if ((state->type == PORT_RSA) &&
- (state->baud_base == SERIAL_RSA_BAUD_BASE &&
- disable_rsa(info)))
- state->baud_base = SERIAL_RSA_BAUD_BASE_LO;
-#endif
-
-
- (void)serial_in(info, UART_RX); /* read data port to reset things */
-
- if (info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
-
- if (uart_config[info->state->type].flags & UART_STARTECH) {
- /* Arrange to enter sleep mode */
- serial_outp(info, UART_LCR, 0xBF);
- serial_outp(info, UART_EFR, UART_EFR_ECB);
- serial_outp(info, UART_LCR, 0);
- serial_outp(info, UART_IER, UART_IERX_SLEEP);
- serial_outp(info, UART_LCR, 0xBF);
- serial_outp(info, UART_EFR, 0);
- serial_outp(info, UART_LCR, 0);
- }
- if (info->state->type == PORT_16750) {
- /* Arrange to enter sleep mode */
- serial_outp(info, UART_IER, UART_IERX_SLEEP);
- }
- info->flags &= ~ASYNC_INITIALIZED;
- restore_flags(flags);
-}
-
-#if (LINUX_VERSION_CODE < 131394) /* Linux 2.1.66 */
-static int baud_table[] = {
- 0, 50, 75, 110, 134, 150, 200, 300,
- 600, 1200, 1800, 2400, 4800, 9600, 19200,
- 38400, 57600, 115200, 230400, 460800, 0 };
-
-static int tty_get_baud_rate(struct tty_struct *tty)
-{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
- unsigned int cflag, i;
-
- cflag = tty->termios->c_cflag;
-
- i = cflag & CBAUD;
- if (i & CBAUDEX) {
- i &= ~CBAUDEX;
- if (i < 1 || i > 2)
- tty->termios->c_cflag &= ~CBAUDEX;
- else
- i += 15;
- }
- if (i == 15) {
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
- i += 1;
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
- i += 2;
- }
- return baud_table[i];
-}
-#endif
-
-/*
- * This routine is called to set the UART divisor registers to match
- * the specified baud rate for a serial port.
- */
-static void change_speed(struct async_struct *info,
- struct termios *old_termios)
-{
- int quot = 0, baud_base, baud;
- unsigned cflag, cval, fcr = 0;
- int bits;
- unsigned long flags;
-
- if (!info->tty || !info->tty->termios)
- return;
- cflag = info->tty->termios->c_cflag;
- if (!CONFIGURED_SERIAL_PORT(info))
- return;
-
- /* byte size and parity */
- switch (cflag & CSIZE) {
- case CS5: cval = 0x00; bits = 7; break;
- case CS6: cval = 0x01; bits = 8; break;
- case CS7: cval = 0x02; bits = 9; break;
- case CS8: cval = 0x03; bits = 10; break;
- /* Never happens, but GCC is too dumb to figure it out */
- default: cval = 0x00; bits = 7; break;
- }
- if (cflag & CSTOPB) {
- cval |= 0x04;
- bits++;
- }
- if (cflag & PARENB) {
- cval |= UART_LCR_PARITY;
- bits++;
- }
- if (!(cflag & PARODD))
- cval |= UART_LCR_EPAR;
-#ifdef CMSPAR
- if (cflag & CMSPAR)
- cval |= UART_LCR_SPAR;
-#endif
-
- /* Determine divisor based on baud rate */
- baud = tty_get_baud_rate(info->tty);
- if (!baud)
- baud = 9600; /* B0 transition handled in rs_set_termios */
-#ifdef CONFIG_SERIAL_RSA
- if ((info->state->type == PORT_RSA) &&
- (info->state->baud_base != SERIAL_RSA_BAUD_BASE) &&
- enable_rsa(info))
- info->state->baud_base = SERIAL_RSA_BAUD_BASE;
-#endif
- baud_base = info->state->baud_base;
- if (info->state->type == PORT_16C950) {
- if (baud <= baud_base)
- serial_icr_write(info, UART_TCR, 0);
- else if (baud <= 2*baud_base) {
- serial_icr_write(info, UART_TCR, 0x8);
- baud_base = baud_base * 2;
- } else if (baud <= 4*baud_base) {
- serial_icr_write(info, UART_TCR, 0x4);
- baud_base = baud_base * 4;
- } else
- serial_icr_write(info, UART_TCR, 0);
- }
- if (baud == 38400 &&
- ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST))
- quot = info->state->custom_divisor;
- else {
- if (baud == 134)
- /* Special case since 134 is really 134.5 */
- quot = (2*baud_base / 269);
- else if (baud)
- quot = baud_base / baud;
- }
- /* If the quotient is zero refuse the change */
- if (!quot && old_termios) {
- info->tty->termios->c_cflag &= ~CBAUD;
- info->tty->termios->c_cflag |= (old_termios->c_cflag & CBAUD);
- baud = tty_get_baud_rate(info->tty);
- if (!baud)
- baud = 9600;
- if (baud == 38400 &&
- ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST))
- quot = info->state->custom_divisor;
- else {
- if (baud == 134)
- /* Special case since 134 is really 134.5 */
- quot = (2*baud_base / 269);
- else if (baud)
- quot = baud_base / baud;
- }
- }
- /* As a last resort, if the quotient is zero, default to 9600 bps */
- if (!quot)
- quot = baud_base / 9600;
- /*
- * Work around a bug in the Oxford Semiconductor 952 rev B
- * chip which causes it to seriously miscalculate baud rates
- * when DLL is 0.
- */
- if (((quot & 0xFF) == 0) && (info->state->type == PORT_16C950) &&
- (info->state->revision == 0x5201))
- quot++;
-
- info->quot = quot;
- info->timeout = ((info->xmit_fifo_size*HZ*bits*quot) / baud_base);
- info->timeout += HZ/50; /* Add .02 seconds of slop */
-
- /* Set up FIFO's */
- if (uart_config[info->state->type].flags & UART_USE_FIFO) {
- if ((info->state->baud_base / quot) < 2400)
- fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_1;
-#ifdef CONFIG_SERIAL_RSA
- else if (info->state->type == PORT_RSA)
- fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_14;
-#endif
- else
- fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_8;
- }
- if (info->state->type == PORT_16750)
- fcr |= UART_FCR7_64BYTE;
-
- /* CTS flow control flag and modem status interrupts */
- info->IER &= ~UART_IER_MSI;
- if (info->flags & ASYNC_HARDPPS_CD)
- info->IER |= UART_IER_MSI;
- if (cflag & CRTSCTS) {
- info->flags |= ASYNC_CTS_FLOW;
- info->IER |= UART_IER_MSI;
- } else
- info->flags &= ~ASYNC_CTS_FLOW;
- if (cflag & CLOCAL)
- info->flags &= ~ASYNC_CHECK_CD;
- else {
- info->flags |= ASYNC_CHECK_CD;
- info->IER |= UART_IER_MSI;
- }
- serial_out(info, UART_IER, info->IER);
-
- /*
- * Set up parity check flag
- */
-#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-
- info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
- if (I_INPCK(info->tty))
- info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
- if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
- info->read_status_mask |= UART_LSR_BI;
-
- /*
- * Characters to ignore
- */
- info->ignore_status_mask = 0;
- if (I_IGNPAR(info->tty))
- info->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
- if (I_IGNBRK(info->tty)) {
- info->ignore_status_mask |= UART_LSR_BI;
- /*
- * If we're ignore parity and break indicators, ignore
- * overruns too. (For real raw support).
- */
- if (I_IGNPAR(info->tty))
- info->ignore_status_mask |= UART_LSR_OE;
- }
- /*
- * !!! ignore all characters if CREAD is not set
- */
- if ((cflag & CREAD) == 0)
- info->ignore_status_mask |= UART_LSR_DR;
- save_flags(flags); cli();
- if (uart_config[info->state->type].flags & UART_STARTECH) {
- serial_outp(info, UART_LCR, 0xBF);
- serial_outp(info, UART_EFR,
- (cflag & CRTSCTS) ? UART_EFR_CTS : 0);
- }
- serial_outp(info, UART_LCR, cval | UART_LCR_DLAB); /* set DLAB */
- serial_outp(info, UART_DLL, quot & 0xff); /* LS of divisor */
- serial_outp(info, UART_DLM, quot >> 8); /* MS of divisor */
- if (info->state->type == PORT_16750)
- serial_outp(info, UART_FCR, fcr); /* set fcr */
- serial_outp(info, UART_LCR, cval); /* reset DLAB */
- info->LCR = cval; /* Save LCR */
- if (info->state->type != PORT_16750) {
- if (fcr & UART_FCR_ENABLE_FIFO) {
- /* emulated UARTs (Lucent Venus 167x) need two steps */
- serial_outp(info, UART_FCR, UART_FCR_ENABLE_FIFO);
- }
- serial_outp(info, UART_FCR, fcr); /* set fcr */
- }
- restore_flags(flags);
-}
-
-static void rs_put_char(struct tty_struct *tty, unsigned char ch)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "rs_put_char"))
- return;
-
- if (!tty || !info->xmit.buf)
- return;
-
- save_flags(flags); cli();
- if (CIRC_SPACE(info->xmit.head,
- info->xmit.tail,
- SERIAL_XMIT_SIZE) == 0) {
- restore_flags(flags);
- return;
- }
-
- info->xmit.buf[info->xmit.head] = ch;
- info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
- restore_flags(flags);
-}
-
-static void rs_flush_chars(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "rs_flush_chars"))
- return;
-
- if (info->xmit.head == info->xmit.tail
- || tty->stopped
- || tty->hw_stopped
- || !info->xmit.buf)
- return;
-
- save_flags(flags); cli();
- info->IER |= UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- restore_flags(flags);
-}
-
-static int rs_write(struct tty_struct * tty, int from_user,
- const unsigned char *buf, int count)
-{
- int c, ret = 0;
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "rs_write"))
- return 0;
-
- if (!tty || !info->xmit.buf || !tmp_buf)
- return 0;
-
- save_flags(flags);
- if (from_user) {
- down(&tmp_buf_sem);
- while (1) {
- int c1;
- c = CIRC_SPACE_TO_END(info->xmit.head,
- info->xmit.tail,
- SERIAL_XMIT_SIZE);
- if (count < c)
- c = count;
- if (c <= 0)
- break;
-
- c -= copy_from_user(tmp_buf, buf, c);
- if (!c) {
- if (!ret)
- ret = -EFAULT;
- break;
- }
- cli();
- c1 = CIRC_SPACE_TO_END(info->xmit.head,
- info->xmit.tail,
- SERIAL_XMIT_SIZE);
- if (c1 < c)
- c = c1;
- memcpy(info->xmit.buf + info->xmit.head, tmp_buf, c);
- info->xmit.head = ((info->xmit.head + c) &
- (SERIAL_XMIT_SIZE-1));
- restore_flags(flags);
- buf += c;
- count -= c;
- ret += c;
- }
- up(&tmp_buf_sem);
- } else {
- cli();
- while (1) {
- c = CIRC_SPACE_TO_END(info->xmit.head,
- info->xmit.tail,
- SERIAL_XMIT_SIZE);
- if (count < c)
- c = count;
- if (c <= 0) {
- break;
- }
- memcpy(info->xmit.buf + info->xmit.head, buf, c);
- info->xmit.head = ((info->xmit.head + c) &
- (SERIAL_XMIT_SIZE-1));
- buf += c;
- count -= c;
- ret += c;
- }
- restore_flags(flags);
- }
- if (info->xmit.head != info->xmit.tail
- && !tty->stopped
- && !tty->hw_stopped
- && !(info->IER & UART_IER_THRI)) {
- info->IER |= UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- }
- return ret;
-}
-
-static int rs_write_room(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
-
- if (serial_paranoia_check(info, tty->device, "rs_write_room"))
- return 0;
- return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-static int rs_chars_in_buffer(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
-
- if (serial_paranoia_check(info, tty->device, "rs_chars_in_buffer"))
- return 0;
- return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-static void rs_flush_buffer(struct tty_struct *tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "rs_flush_buffer"))
- return;
- save_flags(flags); cli();
- info->xmit.head = info->xmit.tail = 0;
- restore_flags(flags);
- wake_up_interruptible(&tty->write_wait);
-#ifdef SERIAL_HAVE_POLL_WAIT
- wake_up_interruptible(&tty->poll_wait);
-#endif
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
-}
-
-/*
- * This function is used to send a high-priority XON/XOFF character to
- * the device
- */
-static void rs_send_xchar(struct tty_struct *tty, char ch)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
-
- if (serial_paranoia_check(info, tty->device, "rs_send_char"))
- return;
-
- info->x_char = ch;
- if (ch) {
- /* Make sure transmit interrupts are on */
- info->IER |= UART_IER_THRI;
- serial_out(info, UART_IER, info->IER);
- }
-}
-
-/*
- * ------------------------------------------------------------
- * rs_throttle()
- *
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled.
- * ------------------------------------------------------------
- */
-static void rs_throttle(struct tty_struct * tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-#ifdef SERIAL_DEBUG_THROTTLE
- char buf[64];
-
- printk("throttle %s: %d....\n", tty_name(tty, buf),
- tty->ldisc.chars_in_buffer(tty));
-#endif
-
- if (serial_paranoia_check(info, tty->device, "rs_throttle"))
- return;
-
- if (I_IXOFF(tty))
- rs_send_xchar(tty, STOP_CHAR(tty));
-
- if (tty->termios->c_cflag & CRTSCTS)
- info->MCR &= ~UART_MCR_RTS;
-
- save_flags(flags); cli();
- serial_out(info, UART_MCR, info->MCR);
- restore_flags(flags);
-}
-
-static void rs_unthrottle(struct tty_struct * tty)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-#ifdef SERIAL_DEBUG_THROTTLE
- char buf[64];
-
- printk("unthrottle %s: %d....\n", tty_name(tty, buf),
- tty->ldisc.chars_in_buffer(tty));
-#endif
-
- if (serial_paranoia_check(info, tty->device, "rs_unthrottle"))
- return;
-
- if (I_IXOFF(tty)) {
- if (info->x_char)
- info->x_char = 0;
- else
- rs_send_xchar(tty, START_CHAR(tty));
- }
- if (tty->termios->c_cflag & CRTSCTS)
- info->MCR |= UART_MCR_RTS;
- save_flags(flags); cli();
- serial_out(info, UART_MCR, info->MCR);
- restore_flags(flags);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_ioctl() and friends
- * ------------------------------------------------------------
- */
-
-static int get_serial_info(struct async_struct * info,
- struct serial_struct * retinfo)
-{
- struct serial_struct tmp;
- struct serial_state *state = info->state;
-
- if (!retinfo)
- return -EFAULT;
- memset(&tmp, 0, sizeof(tmp));
- tmp.type = state->type;
- tmp.line = state->line;
- tmp.port = state->port;
- if (HIGH_BITS_OFFSET)
- tmp.port_high = state->port >> HIGH_BITS_OFFSET;
- else
- tmp.port_high = 0;
- tmp.irq = state->irq;
- tmp.flags = state->flags;
- tmp.xmit_fifo_size = state->xmit_fifo_size;
- tmp.baud_base = state->baud_base;
- tmp.close_delay = state->close_delay;
- tmp.closing_wait = state->closing_wait;
- tmp.custom_divisor = state->custom_divisor;
- tmp.hub6 = state->hub6;
- tmp.io_type = state->io_type;
- if (copy_to_user(retinfo,&tmp,sizeof(*retinfo)))
- return -EFAULT;
- return 0;
-}
-
-static int set_serial_info(struct async_struct * info,
- struct serial_struct * new_info)
-{
- struct serial_struct new_serial;
- struct serial_state old_state, *state;
- unsigned int i,change_irq,change_port;
- int retval = 0;
- unsigned long new_port;
-
- if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
- return -EFAULT;
- state = info->state;
- old_state = *state;
-
- new_port = new_serial.port;
- if (HIGH_BITS_OFFSET)
- new_port += (unsigned long) new_serial.port_high << HIGH_BITS_OFFSET;
-
- change_irq = new_serial.irq != state->irq;
- change_port = (new_port != ((int) state->port)) ||
- (new_serial.hub6 != state->hub6);
-
- if (!capable(CAP_SYS_ADMIN)) {
- if (change_irq || change_port ||
- (new_serial.baud_base != state->baud_base) ||
- (new_serial.type != state->type) ||
- (new_serial.close_delay != state->close_delay) ||
- (new_serial.xmit_fifo_size != state->xmit_fifo_size) ||
- ((new_serial.flags & ~ASYNC_USR_MASK) !=
- (state->flags & ~ASYNC_USR_MASK)))
- return -EPERM;
- state->flags = ((state->flags & ~ASYNC_USR_MASK) |
- (new_serial.flags & ASYNC_USR_MASK));
- info->flags = ((info->flags & ~ASYNC_USR_MASK) |
- (new_serial.flags & ASYNC_USR_MASK));
- state->custom_divisor = new_serial.custom_divisor;
- goto check_and_exit;
- }
-
- new_serial.irq = irq_cannonicalize(new_serial.irq);
-
- if ((new_serial.irq >= NR_IRQS) || (new_serial.irq < 0) ||
- (new_serial.baud_base < 9600)|| (new_serial.type < PORT_UNKNOWN) ||
- (new_serial.type > PORT_MAX) || (new_serial.type == PORT_CIRRUS) ||
- (new_serial.type == PORT_STARTECH)) {
- return -EINVAL;
- }
-
- if ((new_serial.type != state->type) ||
- (new_serial.xmit_fifo_size <= 0))
- new_serial.xmit_fifo_size =
- uart_config[new_serial.type].dfl_xmit_fifo_size;
-
- /* Make sure address is not already in use */
- if (new_serial.type) {
- for (i = 0 ; i < NR_PORTS; i++)
- if ((state != &rs_table[i]) &&
- (rs_table[i].port == new_port) &&
- rs_table[i].type)
- return -EADDRINUSE;
- }
-
- if ((change_port || change_irq) && (state->count > 1))
- return -EBUSY;
-
- /*
- * OK, past this point, all the error checking has been done.
- * At this point, we start making changes.....
- */
-
- state->baud_base = new_serial.baud_base;
- state->flags = ((state->flags & ~ASYNC_FLAGS) |
- (new_serial.flags & ASYNC_FLAGS));
- info->flags = ((state->flags & ~ASYNC_INTERNAL_FLAGS) |
- (info->flags & ASYNC_INTERNAL_FLAGS));
- state->custom_divisor = new_serial.custom_divisor;
- state->close_delay = new_serial.close_delay * HZ/100;
- state->closing_wait = new_serial.closing_wait * HZ/100;
-#if (LINUX_VERSION_CODE > 0x20100)
- info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
-#endif
- info->xmit_fifo_size = state->xmit_fifo_size =
- new_serial.xmit_fifo_size;
-
- if ((state->type != PORT_UNKNOWN) && state->port) {
-#ifdef CONFIG_SERIAL_RSA
- if (old_state.type == PORT_RSA)
- release_region(state->port + UART_RSA_BASE, 16);
- else
-#endif
- release_region(state->port,8);
- }
- state->type = new_serial.type;
- if (change_port || change_irq) {
- /*
- * We need to shutdown the serial port at the old
- * port/irq combination.
- */
- shutdown(info);
- state->irq = new_serial.irq;
- info->port = state->port = new_port;
- info->hub6 = state->hub6 = new_serial.hub6;
- if (info->hub6)
- info->io_type = state->io_type = SERIAL_IO_HUB6;
- else if (info->io_type == SERIAL_IO_HUB6)
- info->io_type = state->io_type = SERIAL_IO_PORT;
- }
- if ((state->type != PORT_UNKNOWN) && state->port) {
-#ifdef CONFIG_SERIAL_RSA
- if (state->type == PORT_RSA)
- request_region(state->port + UART_RSA_BASE,
- 16, "serial_rsa(set)");
- else
-#endif
- request_region(state->port,8,"serial(set)");
- }
-
-
-check_and_exit:
- if (!state->port || !state->type)
- return 0;
- if (info->flags & ASYNC_INITIALIZED) {
- if (((old_state.flags & ASYNC_SPD_MASK) !=
- (state->flags & ASYNC_SPD_MASK)) ||
- (old_state.custom_divisor != state->custom_divisor)) {
-#if (LINUX_VERSION_CODE >= 131394) /* Linux 2.1.66 */
- if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
- info->tty->alt_speed = 57600;
- if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
- info->tty->alt_speed = 115200;
- if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
- info->tty->alt_speed = 230400;
- if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
- info->tty->alt_speed = 460800;
-#endif
- change_speed(info, 0);
- }
- } else
- retval = startup(info);
- return retval;
-}
-
-
-/*
- * get_lsr_info - get line status register info
- *
- * Purpose: Let user call ioctl() to get info when the UART physically
- * is emptied. On bus types like RS485, the transmitter must
- * release the bus after transmitting. This must be done when
- * the transmit shift register is empty, not be done when the
- * transmit holding register is empty. This functionality
- * allows an RS485 driver to be written in user space.
- */
-static int get_lsr_info(struct async_struct * info, unsigned int *value)
-{
- unsigned char status;
- unsigned int result;
- unsigned long flags;
-
- save_flags(flags); cli();
- status = serial_in(info, UART_LSR);
- restore_flags(flags);
- result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
-
- /*
- * If we're about to load something into the transmit
- * register, we'll pretend the transmitter isn't empty to
- * avoid a race condition (depending on when the transmit
- * interrupt happens).
- */
- if (info->x_char ||
- ((CIRC_CNT(info->xmit.head, info->xmit.tail,
- SERIAL_XMIT_SIZE) > 0) &&
- !info->tty->stopped && !info->tty->hw_stopped))
- result &= ~TIOCSER_TEMT;
-
- if (copy_to_user(value, &result, sizeof(int)))
- return -EFAULT;
- return 0;
-}
-
-
-static int get_modem_info(struct async_struct * info, unsigned int *value)
-{
- unsigned char control, status;
- unsigned int result;
- unsigned long flags;
-
- control = info->MCR;
- save_flags(flags); cli();
- status = serial_in(info, UART_MSR);
- restore_flags(flags);
- result = ((control & UART_MCR_RTS) ? TIOCM_RTS : 0)
- | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0)
-#ifdef TIOCM_OUT1
- | ((control & UART_MCR_OUT1) ? TIOCM_OUT1 : 0)
- | ((control & UART_MCR_OUT2) ? TIOCM_OUT2 : 0)
-#endif
- | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0)
- | ((status & UART_MSR_RI) ? TIOCM_RNG : 0)
- | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0)
- | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
-
- if (copy_to_user(value, &result, sizeof(int)))
- return -EFAULT;
- return 0;
-}
-
-static int set_modem_info(struct async_struct * info, unsigned int cmd,
- unsigned int *value)
-{
- unsigned int arg;
- unsigned long flags;
-
- if (copy_from_user(&arg, value, sizeof(int)))
- return -EFAULT;
-
- switch (cmd) {
- case TIOCMBIS:
- if (arg & TIOCM_RTS)
- info->MCR |= UART_MCR_RTS;
- if (arg & TIOCM_DTR)
- info->MCR |= UART_MCR_DTR;
-#ifdef TIOCM_OUT1
- if (arg & TIOCM_OUT1)
- info->MCR |= UART_MCR_OUT1;
- if (arg & TIOCM_OUT2)
- info->MCR |= UART_MCR_OUT2;
-#endif
- if (arg & TIOCM_LOOP)
- info->MCR |= UART_MCR_LOOP;
- break;
- case TIOCMBIC:
- if (arg & TIOCM_RTS)
- info->MCR &= ~UART_MCR_RTS;
- if (arg & TIOCM_DTR)
- info->MCR &= ~UART_MCR_DTR;
-#ifdef TIOCM_OUT1
- if (arg & TIOCM_OUT1)
- info->MCR &= ~UART_MCR_OUT1;
- if (arg & TIOCM_OUT2)
- info->MCR &= ~UART_MCR_OUT2;
-#endif
- if (arg & TIOCM_LOOP)
- info->MCR &= ~UART_MCR_LOOP;
- break;
- case TIOCMSET:
- info->MCR = ((info->MCR & ~(UART_MCR_RTS |
-#ifdef TIOCM_OUT1
- UART_MCR_OUT1 |
- UART_MCR_OUT2 |
-#endif
- UART_MCR_LOOP |
- UART_MCR_DTR))
- | ((arg & TIOCM_RTS) ? UART_MCR_RTS : 0)
-#ifdef TIOCM_OUT1
- | ((arg & TIOCM_OUT1) ? UART_MCR_OUT1 : 0)
- | ((arg & TIOCM_OUT2) ? UART_MCR_OUT2 : 0)
-#endif
- | ((arg & TIOCM_LOOP) ? UART_MCR_LOOP : 0)
- | ((arg & TIOCM_DTR) ? UART_MCR_DTR : 0));
- break;
- default:
- return -EINVAL;
- }
- save_flags(flags); cli();
- info->MCR |= ALPHA_KLUDGE_MCR; /* Don't ask */
- serial_out(info, UART_MCR, info->MCR);
- restore_flags(flags);
- return 0;
-}
-
-static int do_autoconfig(struct async_struct * info)
-{
- int irq, retval;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (info->state->count > 1)
- return -EBUSY;
-
- shutdown(info);
-
- autoconfig(info->state);
- if ((info->state->flags & ASYNC_AUTO_IRQ) &&
- (info->state->port != 0 || info->state->iomem_base != 0) &&
- (info->state->type != PORT_UNKNOWN)) {
- irq = detect_uart_irq(info->state);
- if (irq > 0)
- info->state->irq = irq;
- }
-
- retval = startup(info);
- if (retval)
- return retval;
- return 0;
-}
-
-/*
- * rs_break() --- routine which turns the break handling on or off
- */
-#if (LINUX_VERSION_CODE < 131394) /* Linux 2.1.66 */
-static void send_break( struct async_struct * info, int duration)
-{
- if (!CONFIGURED_SERIAL_PORT(info))
- return;
- current->state = TASK_INTERRUPTIBLE;
- current->timeout = jiffies + duration;
- cli();
- info->LCR |= UART_LCR_SBC;
- serial_out(info, UART_LCR, info->LCR);
- schedule();
- info->LCR &= ~UART_LCR_SBC;
- serial_out(info, UART_LCR, info->LCR);
- sti();
-}
-#else
-static void rs_break(struct tty_struct *tty, int break_state)
-{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "rs_break"))
- return;
-
- if (!CONFIGURED_SERIAL_PORT(info))
- return;
- save_flags(flags); cli();
- if (break_state == -1)
- info->LCR |= UART_LCR_SBC;
- else
- info->LCR &= ~UART_LCR_SBC;
- serial_out(info, UART_LCR, info->LCR);
- restore_flags(flags);
-}
-#endif
-
-#ifdef CONFIG_SERIAL_MULTIPORT
-static int get_multiport_struct(struct async_struct * info,
- struct serial_multiport_struct *retinfo)
-{
- struct serial_multiport_struct ret;
- struct rs_multiport_struct *multi;
-
- multi = &rs_multiport[info->state->irq];
-
- ret.port_monitor = multi->port_monitor;
-
- ret.port1 = multi->port1;
- ret.mask1 = multi->mask1;
- ret.match1 = multi->match1;
-
- ret.port2 = multi->port2;
- ret.mask2 = multi->mask2;
- ret.match2 = multi->match2;
-
- ret.port3 = multi->port3;
- ret.mask3 = multi->mask3;
- ret.match3 = multi->match3;
-
- ret.port4 = multi->port4;
- ret.mask4 = multi->mask4;
- ret.match4 = multi->match4;
-
- ret.irq = info->state->irq;
-
- if (copy_to_user(retinfo,&ret,sizeof(*retinfo)))
- return -EFAULT;
- return 0;
-}
-
-static int set_multiport_struct(struct async_struct * info,
- struct serial_multiport_struct *in_multi)
-{
- struct serial_multiport_struct new_multi;
- struct rs_multiport_struct *multi;
- struct serial_state *state;
- int was_multi, now_multi;
- int retval;
- void (*handler)(int, void *, struct pt_regs *);
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- state = info->state;
-
- if (copy_from_user(&new_multi, in_multi,
- sizeof(struct serial_multiport_struct)))
- return -EFAULT;
-
- if (new_multi.irq != state->irq || state->irq == 0 ||
- !IRQ_ports[state->irq])
- return -EINVAL;
-
- multi = &rs_multiport[state->irq];
- was_multi = (multi->port1 != 0);
-
- multi->port_monitor = new_multi.port_monitor;
-
- if (multi->port1)
- release_region(multi->port1,1);
- multi->port1 = new_multi.port1;
- multi->mask1 = new_multi.mask1;
- multi->match1 = new_multi.match1;
- if (multi->port1)
- request_region(multi->port1,1,"serial(multiport1)");
-
- if (multi->port2)
- release_region(multi->port2,1);
- multi->port2 = new_multi.port2;
- multi->mask2 = new_multi.mask2;
- multi->match2 = new_multi.match2;
- if (multi->port2)
- request_region(multi->port2,1,"serial(multiport2)");
-
- if (multi->port3)
- release_region(multi->port3,1);
- multi->port3 = new_multi.port3;
- multi->mask3 = new_multi.mask3;
- multi->match3 = new_multi.match3;
- if (multi->port3)
- request_region(multi->port3,1,"serial(multiport3)");
-
- if (multi->port4)
- release_region(multi->port4,1);
- multi->port4 = new_multi.port4;
- multi->mask4 = new_multi.mask4;
- multi->match4 = new_multi.match4;
- if (multi->port4)
- request_region(multi->port4,1,"serial(multiport4)");
-
- now_multi = (multi->port1 != 0);
-
- if (IRQ_ports[state->irq]->next_port &&
- (was_multi != now_multi)) {
- free_irq(state->irq, &IRQ_ports[state->irq]);
- if (now_multi)
- handler = rs_interrupt_multi;
- else
- handler = rs_interrupt;
-
- retval = request_irq(state->irq, handler, SA_SHIRQ,
- "serial", &IRQ_ports[state->irq]);
- if (retval) {
- printk("Couldn't reallocate serial interrupt "
- "driver!!\n");
- }
- }
- return 0;
-}
-#endif
-
-static int rs_ioctl(struct tty_struct *tty, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
- struct async_icount cprev, cnow; /* kernel counter temps */
- struct serial_icounter_struct icount;
- unsigned long flags;
-#if (LINUX_VERSION_CODE < 131394) /* Linux 2.1.66 */
- int retval, tmp;
-#endif
-
- if (serial_paranoia_check(info, tty->device, "rs_ioctl"))
- return -ENODEV;
-
- if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
- (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
- (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
- if (tty->flags & (1 << TTY_IO_ERROR))
- return -EIO;
- }
-
- switch (cmd) {
-#if (LINUX_VERSION_CODE < 131394) /* Linux 2.1.66 */
- case TCSBRK: /* SVID version: non-zero arg --> no break */
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- tty_wait_until_sent(tty, 0);
- if (signal_pending(current))
- return -EINTR;
- if (!arg) {
- send_break(info, HZ/4); /* 1/4 second */
- if (signal_pending(current))
- return -EINTR;
- }
- return 0;
- case TCSBRKP: /* support for POSIX tcsendbreak() */
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- tty_wait_until_sent(tty, 0);
- if (signal_pending(current))
- return -EINTR;
- send_break(info, arg ? arg*(HZ/10) : HZ/4);
- if (signal_pending(current))
- return -EINTR;
- return 0;
- case TIOCGSOFTCAR:
- tmp = C_CLOCAL(tty) ? 1 : 0;
- if (copy_to_user((void *)arg, &tmp, sizeof(int)))
- return -EFAULT;
- return 0;
- case TIOCSSOFTCAR:
- if (copy_from_user(&tmp, (void *)arg, sizeof(int)))
- return -EFAULT;
-
- tty->termios->c_cflag =
- ((tty->termios->c_cflag & ~CLOCAL) |
- (tmp ? CLOCAL : 0));
- return 0;
-#endif
- case TIOCMGET:
- return get_modem_info(info, (unsigned int *) arg);
- case TIOCMBIS:
- case TIOCMBIC:
- case TIOCMSET:
- return set_modem_info(info, cmd, (unsigned int *) arg);
- case TIOCGSERIAL:
- return get_serial_info(info,
- (struct serial_struct *) arg);
- case TIOCSSERIAL:
- return set_serial_info(info,
- (struct serial_struct *) arg);
- case TIOCSERCONFIG:
- return do_autoconfig(info);
-
- case TIOCSERGETLSR: /* Get line status register */
- return get_lsr_info(info, (unsigned int *) arg);
-
- case TIOCSERGSTRUCT:
- if (copy_to_user((struct async_struct *) arg,
- info, sizeof(struct async_struct)))
- return -EFAULT;
- return 0;
-
-#ifdef CONFIG_SERIAL_MULTIPORT
- case TIOCSERGETMULTI:
- return get_multiport_struct(info,
- (struct serial_multiport_struct *) arg);
- case TIOCSERSETMULTI:
- return set_multiport_struct(info,
- (struct serial_multiport_struct *) arg);
-#endif
-
- /*
- * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
- * - mask passed in arg for lines of interest
- * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
- * Caller should use TIOCGICOUNT to see which one it was
- */
- case TIOCMIWAIT:
- save_flags(flags); cli();
- /* note the counters on entry */
- cprev = info->state->icount;
- restore_flags(flags);
- /* Force modem status interrupts on */
- info->IER |= UART_IER_MSI;
- serial_out(info, UART_IER, info->IER);
- while (1) {
- interruptible_sleep_on(&info->delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
- save_flags(flags); cli();
- cnow = info->state->icount; /* atomic copy */
- restore_flags(flags);
- if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
- cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
- return -EIO; /* no change => error */
- if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
- return 0;
- }
- cprev = cnow;
- }
- /* NOTREACHED */
-
- /*
- * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
- * Return: write counters to the user passed counter struct
- * NB: both 1->0 and 0->1 transitions are counted except for
- * RI where only 0->1 is counted.
- */
- case TIOCGICOUNT:
- save_flags(flags); cli();
- cnow = info->state->icount;
- restore_flags(flags);
- icount.cts = cnow.cts;
- icount.dsr = cnow.dsr;
- icount.rng = cnow.rng;
- icount.dcd = cnow.dcd;
- icount.rx = cnow.rx;
- icount.tx = cnow.tx;
- icount.frame = cnow.frame;
- icount.overrun = cnow.overrun;
- icount.parity = cnow.parity;
- icount.brk = cnow.brk;
- icount.buf_overrun = cnow.buf_overrun;
-
- if (copy_to_user((void *)arg, &icount, sizeof(icount)))
- return -EFAULT;
- return 0;
- case TIOCSERGWILD:
- case TIOCSERSWILD:
- /* "setserial -W" is called in Debian boot */
- printk ("TIOCSER?WILD ioctl obsolete, ignored.\n");
- return 0;
-
- default:
- return -ENOIOCTLCMD;
- }
- return 0;
-}
-
-static void rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
-{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
- unsigned long flags;
- unsigned int cflag = tty->termios->c_cflag;
-
- if ( (cflag == old_termios->c_cflag)
- && ( RELEVANT_IFLAG(tty->termios->c_iflag)
- == RELEVANT_IFLAG(old_termios->c_iflag)))
- return;
-
- change_speed(info, old_termios);
-
- /* Handle transition to B0 status */
- if ((old_termios->c_cflag & CBAUD) &&
- !(cflag & CBAUD)) {
- info->MCR &= ~(UART_MCR_DTR|UART_MCR_RTS);
- save_flags(flags); cli();
- serial_out(info, UART_MCR, info->MCR);
- restore_flags(flags);
- }
-
- /* Handle transition away from B0 status */
- if (!(old_termios->c_cflag & CBAUD) &&
- (cflag & CBAUD)) {
- info->MCR |= UART_MCR_DTR;
- if (!(tty->termios->c_cflag & CRTSCTS) ||
- !test_bit(TTY_THROTTLED, &tty->flags)) {
- info->MCR |= UART_MCR_RTS;
- }
- save_flags(flags); cli();
- serial_out(info, UART_MCR, info->MCR);
- restore_flags(flags);
- }
-
- /* Handle turning off CRTSCTS */
- if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
- rs_start(tty);
- }
-
-#if 0
- /*
- * No need to wake up processes in open wait, since they
- * sample the CLOCAL flag once, and don't recheck it.
- * XXX It's not clear whether the current behavior is correct
- * or not. Hence, this may change.....
- */
- if (!(old_termios->c_cflag & CLOCAL) &&
- (tty->termios->c_cflag & CLOCAL))
- wake_up_interruptible(&info->open_wait);
-#endif
-}
-
-/*
- * ------------------------------------------------------------
- * rs_close()
- *
- * This routine is called when the serial port gets closed. First, we
- * wait for the last remaining data to be sent. Then, we unlink its
- * async structure from the interrupt chain if necessary, and we free
- * that IRQ if nothing is left in the chain.
- * ------------------------------------------------------------
- */
-static void rs_close(struct tty_struct *tty, struct file * filp)
-{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
- struct serial_state *state;
- unsigned long flags;
-
- if (!info || serial_paranoia_check(info, tty->device, "rs_close"))
- return;
-
- state = info->state;
-
- save_flags(flags); cli();
-
- if (tty_hung_up_p(filp)) {
- DBG_CNT("before DEC-hung");
- MOD_DEC_USE_COUNT;
- restore_flags(flags);
- return;
- }
-
-#ifdef SERIAL_DEBUG_OPEN
- printk("rs_close ttys%d, count = %d\n", info->line, state->count);
-#endif
- if ((tty->count == 1) && (state->count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. state->count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- printk("rs_close: bad serial port count; tty->count is 1, "
- "state->count is %d\n", state->count);
- state->count = 1;
- }
- if (--state->count < 0) {
- printk("rs_close: bad serial port count for ttys%d: %d\n",
- info->line, state->count);
- state->count = 0;
- }
- if (state->count) {
- DBG_CNT("before DEC-2");
- MOD_DEC_USE_COUNT;
- restore_flags(flags);
- return;
- }
- info->flags |= ASYNC_CLOSING;
- restore_flags(flags);
- /*
- * Save the termios structure, since this port may have
- * separate termios for callout and dialin.
- */
- if (info->flags & ASYNC_NORMAL_ACTIVE)
- info->state->normal_termios = *tty->termios;
- if (info->flags & ASYNC_CALLOUT_ACTIVE)
- info->state->callout_termios = *tty->termios;
- /*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
- if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->closing_wait);
- /*
- * At this point we stop accepting input. To do this, we
- * disable the receive line status interrupts, and tell the
- * interrupt driver to stop checking the data ready bit in the
- * line status register.
- */
- info->IER &= ~UART_IER_RLSI;
- info->read_status_mask &= ~UART_LSR_DR;
- if (info->flags & ASYNC_INITIALIZED) {
- serial_out(info, UART_IER, info->IER);
- /*
- * Before we drop DTR, make sure the UART transmitter
- * has completely drained; this is especially
- * important if there is a transmit FIFO!
- */
- rs_wait_until_sent(tty, info->timeout);
- }
- shutdown(info);
- if (tty->driver.flush_buffer)
- tty->driver.flush_buffer(tty);
- if (tty->ldisc.flush_buffer)
- tty->ldisc.flush_buffer(tty);
- tty->closing = 0;
- info->event = 0;
- info->tty = 0;
- if (info->blocked_open) {
- if (info->close_delay) {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(info->close_delay);
- }
- wake_up_interruptible(&info->open_wait);
- }
- info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|
- ASYNC_CLOSING);
- wake_up_interruptible(&info->close_wait);
- MOD_DEC_USE_COUNT;
-}
-
-/*
- * rs_wait_until_sent() --- wait until the transmitter is empty
- */
-static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
-{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
- unsigned long orig_jiffies, char_time;
- int lsr;
-
- if (serial_paranoia_check(info, tty->device, "rs_wait_until_sent"))
- return;
-
- if (info->state->type == PORT_UNKNOWN)
- return;
-
- if (info->xmit_fifo_size == 0)
- return; /* Just in case.... */
-
- orig_jiffies = jiffies;
- /*
- * Set the check interval to be 1/5 of the estimated time to
- * send a single character, and make it at least 1. The check
- * interval should also be less than the timeout.
- *
- * Note: we have to use pretty tight timings here to satisfy
- * the NIST-PCTS.
- */
- char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
- char_time = char_time / 5;
- if (char_time == 0)
- char_time = 1;
- if (timeout && timeout < char_time)
- char_time = timeout;
- /*
- * If the transmitter hasn't cleared in twice the approximate
- * amount of time to send the entire FIFO, it probably won't
- * ever clear. This assumes the UART isn't doing flow
- * control, which is currently the case. Hence, if it ever
- * takes longer than info->timeout, this is probably due to a
- * UART bug of some kind. So, we clamp the timeout parameter at
- * 2*info->timeout.
- */
- if (!timeout || timeout > 2*info->timeout)
- timeout = 2*info->timeout;
-#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
- printk("In rs_wait_until_sent(%d) check=%lu...", timeout, char_time);
- printk("jiff=%lu...", jiffies);
-#endif
- while (!((lsr = serial_inp(info, UART_LSR)) & UART_LSR_TEMT)) {
-#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
- printk("lsr = %d (jiff=%lu)...", lsr, jiffies);
-#endif
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(char_time);
- if (signal_pending(current))
- break;
- if (timeout && time_after(jiffies, orig_jiffies + timeout))
- break;
- }
-#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
- printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies);
-#endif
-}
-
-/*
- * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
- */
-static void rs_hangup(struct tty_struct *tty)
-{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
- struct serial_state *state = info->state;
-
- if (serial_paranoia_check(info, tty->device, "rs_hangup"))
- return;
-
- state = info->state;
-
- rs_flush_buffer(tty);
- if (info->flags & ASYNC_CLOSING)
- return;
- shutdown(info);
- info->event = 0;
- state->count = 0;
- info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
- info->tty = 0;
- wake_up_interruptible(&info->open_wait);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_open() and friends
- * ------------------------------------------------------------
- */
-static int block_til_ready(struct tty_struct *tty, struct file * filp,
- struct async_struct *info)
-{
- DECLARE_WAITQUEUE(wait, current);
- struct serial_state *state = info->state;
- int retval;
- int do_clocal = 0, extra_count = 0;
- unsigned long flags;
-
- /*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
- */
- if (tty_hung_up_p(filp) ||
- (info->flags & ASYNC_CLOSING)) {
- if (info->flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->close_wait);
-#ifdef SERIAL_DO_RESTART
- return ((info->flags & ASYNC_HUP_NOTIFY) ?
- -EAGAIN : -ERESTARTSYS);
-#else
- return -EAGAIN;
-#endif
- }
-
- /*
- * If this is a callout device, then just make sure the normal
- * device isn't being used.
- */
- if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
- if (info->flags & ASYNC_NORMAL_ACTIVE)
- return -EBUSY;
- if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
- (info->flags & ASYNC_SESSION_LOCKOUT) &&
- (info->session != current->session))
- return -EBUSY;
- if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
- (info->flags & ASYNC_PGRP_LOCKOUT) &&
- (info->pgrp != current->pgrp))
- return -EBUSY;
- info->flags |= ASYNC_CALLOUT_ACTIVE;
- return 0;
- }
-
- /*
- * If non-blocking mode is set, or the port is not enabled,
- * then make the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- if (info->flags & ASYNC_CALLOUT_ACTIVE)
- return -EBUSY;
- info->flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (info->flags & ASYNC_CALLOUT_ACTIVE) {
- if (state->normal_termios.c_cflag & CLOCAL)
- do_clocal = 1;
- } else {
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
- }
-
- /*
- * Block waiting for the carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, state->count is dropped by one, so that
- * rs_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&info->open_wait, &wait);
-#ifdef SERIAL_DEBUG_OPEN
- printk("block_til_ready before block: ttys%d, count = %d\n",
- state->line, state->count);
-#endif
- save_flags(flags); cli();
- if (!tty_hung_up_p(filp)) {
- extra_count = 1;
- state->count--;
- }
- restore_flags(flags);
- info->blocked_open++;
- while (1) {
- save_flags(flags); cli();
- if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
- (tty->termios->c_cflag & CBAUD))
- serial_out(info, UART_MCR,
- serial_inp(info, UART_MCR) |
- (UART_MCR_DTR | UART_MCR_RTS));
- restore_flags(flags);
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) ||
- !(info->flags & ASYNC_INITIALIZED)) {
-#ifdef SERIAL_DO_RESTART
- if (info->flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
-#else
- retval = -EAGAIN;
-#endif
- break;
- }
- if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
- !(info->flags & ASYNC_CLOSING) &&
- (do_clocal || (serial_in(info, UART_MSR) &
- UART_MSR_DCD)))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-#ifdef SERIAL_DEBUG_OPEN
- printk("block_til_ready blocking: ttys%d, count = %d\n",
- info->line, state->count);
-#endif
- schedule();
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->open_wait, &wait);
- if (extra_count)
- state->count++;
- info->blocked_open--;
-#ifdef SERIAL_DEBUG_OPEN
- printk("block_til_ready after blocking: ttys%d, count = %d\n",
- info->line, state->count);
-#endif
- if (retval)
- return retval;
- info->flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
-}
-
-static int get_async_struct(int line, struct async_struct **ret_info)
-{
- struct async_struct *info;
- struct serial_state *sstate;
-
- sstate = rs_table + line;
- sstate->count++;
- info = sstate->info;
-
- /*
- * If the async_struct is already allocated, do the fastpath.
- */
- if (info)
- goto out;
-
- info = kmalloc(sizeof(struct async_struct), GFP_KERNEL);
- if (!info) {
- sstate->count--;
- return -ENOMEM;
- }
-
- memset(info, 0, sizeof(struct async_struct));
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
- init_waitqueue_head(&info->delta_msr_wait);
- info->magic = SERIAL_MAGIC;
- info->port = sstate->port;
- info->hub6 = sstate->hub6;
- info->flags = sstate->flags;
- info->xmit_fifo_size = sstate->xmit_fifo_size;
- info->state = sstate;
- info->line = line;
- info->iomem_base = sstate->iomem_base;
- info->iomem_reg_shift = sstate->iomem_reg_shift;
- info->io_type = sstate->io_type;
- info->tqueue.routine = do_softint;
- info->tqueue.data = info;
-
- if (sstate->info) {
- kfree(info);
- info = sstate->info;
- } else {
- sstate->info = info;
- }
-
-out:
- /*
- * If this is the first open, copy over some timeouts.
- */
- if (sstate->count == 1) {
- info->closing_wait = sstate->closing_wait;
- }
- *ret_info = info;
- return 0;
-}
-
-/*
- * This routine is called whenever a serial port is opened. It
- * enables interrupts for a serial port, linking in its async structure into
- * the IRQ chain. It also performs the serial-specific
- * initialization for the tty structure.
- */
-static int rs_open(struct tty_struct *tty, struct file * filp)
-{
- struct async_struct *info;
- int retval, line;
- unsigned long page;
-
- MOD_INC_USE_COUNT;
- line = minor(tty->device) - tty->driver.minor_start;
- if ((line < 0) || (line >= NR_PORTS)) {
- MOD_DEC_USE_COUNT;
- return -ENODEV;
- }
- retval = get_async_struct(line, &info);
- if (retval) {
- MOD_DEC_USE_COUNT;
- return retval;
- }
- tty->driver_data = info;
- info->tty = tty;
- if (serial_paranoia_check(info, tty->device, "rs_open")) {
- MOD_DEC_USE_COUNT;
- return -ENODEV;
- }
-
-#ifdef SERIAL_DEBUG_OPEN
- printk("rs_open %s%d, count = %d\n", tty->driver.name, info->line,
- info->state->count);
-#endif
-#if (LINUX_VERSION_CODE > 0x20100)
- info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
-#endif
-
- /*
- * This relies on lock_kernel() stuff so wants tidying for 2.5
- */
- if (!tmp_buf) {
- page = get_zeroed_page(GFP_KERNEL);
- if (!page) {
- MOD_DEC_USE_COUNT;
- return -ENOMEM;
- }
- if (tmp_buf)
- free_page(page);
- else
- tmp_buf = (unsigned char *) page;
- }
-
- /*
- * If the port is the middle of closing, bail out now
- */
- if (tty_hung_up_p(filp) ||
- (info->flags & ASYNC_CLOSING)) {
- if (info->flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->close_wait);
- MOD_DEC_USE_COUNT;
-#ifdef SERIAL_DO_RESTART
- return ((info->flags & ASYNC_HUP_NOTIFY) ?
- -EAGAIN : -ERESTARTSYS);
-#else
- return -EAGAIN;
-#endif
- }
-
- /*
- * Start up serial port
- */
- retval = startup(info);
- if (retval) {
- MOD_DEC_USE_COUNT;
- return retval;
- }
-
- retval = block_til_ready(tty, filp, info);
- if (retval) {
-#ifdef SERIAL_DEBUG_OPEN
- printk("rs_open returning after block_til_ready with %d\n",
- retval);
-#endif
- MOD_DEC_USE_COUNT;
- return retval;
- }
-
- if ((info->state->count == 1) &&
- (info->flags & ASYNC_SPLIT_TERMIOS)) {
- if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
- *tty->termios = info->state->normal_termios;
- else
- *tty->termios = info->state->callout_termios;
- change_speed(info, 0);
- }
-#ifdef CONFIG_SERIAL_CONSOLE
- if (sercons.cflag && sercons.index == line) {
- tty->termios->c_cflag = sercons.cflag;
- sercons.cflag = 0;
- change_speed(info, 0);
- }
-#endif
- info->session = current->session;
- info->pgrp = current->pgrp;
-
-#ifdef SERIAL_DEBUG_OPEN
- printk("rs_open ttys%d successful...", info->line);
-#endif
- return 0;
-}
-
-/*
- * /proc fs routines....
- */
-
-static inline int line_info(char *buf, struct serial_state *state)
-{
- struct async_struct *info = state->info, scr_info;
- char stat_buf[30], control, status;
- int ret;
- unsigned long flags;
-
- ret = sprintf(buf, "%d: uart:%s port:%lX irq:%d",
- state->line, uart_config[state->type].name,
- state->port, state->irq);
-
- if (!state->port || (state->type == PORT_UNKNOWN)) {
- ret += sprintf(buf+ret, "\n");
- return ret;
- }
-
- /*
- * Figure out the current RS-232 lines
- */
- if (!info) {
- info = &scr_info; /* This is just for serial_{in,out} */
-
- info->magic = SERIAL_MAGIC;
- info->port = state->port;
- info->flags = state->flags;
- info->hub6 = state->hub6;
- info->io_type = state->io_type;
- info->iomem_base = state->iomem_base;
- info->iomem_reg_shift = state->iomem_reg_shift;
- info->quot = 0;
- info->tty = 0;
- }
- save_flags(flags); cli();
- status = serial_in(info, UART_MSR);
- control = info != &scr_info ? info->MCR : serial_in(info, UART_MCR);
- restore_flags(flags);
-
- stat_buf[0] = 0;
- stat_buf[1] = 0;
- if (control & UART_MCR_RTS)
- strcat(stat_buf, "|RTS");
- if (status & UART_MSR_CTS)
- strcat(stat_buf, "|CTS");
- if (control & UART_MCR_DTR)
- strcat(stat_buf, "|DTR");
- if (status & UART_MSR_DSR)
- strcat(stat_buf, "|DSR");
- if (status & UART_MSR_DCD)
- strcat(stat_buf, "|CD");
- if (status & UART_MSR_RI)
- strcat(stat_buf, "|RI");
-
- if (info->quot) {
- ret += sprintf(buf+ret, " baud:%d",
- state->baud_base / info->quot);
- }
-
- ret += sprintf(buf+ret, " tx:%d rx:%d",
- state->icount.tx, state->icount.rx);
-
- if (state->icount.frame)
- ret += sprintf(buf+ret, " fe:%d", state->icount.frame);
-
- if (state->icount.parity)
- ret += sprintf(buf+ret, " pe:%d", state->icount.parity);
-
- if (state->icount.brk)
- ret += sprintf(buf+ret, " brk:%d", state->icount.brk);
-
- if (state->icount.overrun)
- ret += sprintf(buf+ret, " oe:%d", state->icount.overrun);
-
- /*
- * Last thing is the RS-232 status lines
- */
- ret += sprintf(buf+ret, " %s\n", stat_buf+1);
- return ret;
-}
-
-int rs_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- int i, len = 0, l;
- off_t begin = 0;
-
- len += sprintf(page, "serinfo:1.0 driver:%s%s revision:%s\n",
- serial_version, LOCAL_VERSTRING, serial_revdate);
- for (i = 0; i < NR_PORTS && len < 4000; i++) {
- l = line_info(page + len, &rs_table[i]);
- len += l;
- if (len+begin > off+count)
- goto done;
- if (len+begin < off) {
- begin += len;
- len = 0;
- }
- }
- *eof = 1;
-done:
- if (off >= len+begin)
- return 0;
- *start = page + (off-begin);
- return ((count < begin+len-off) ? count : begin+len-off);
-}
-
-/*
- * ---------------------------------------------------------------------
- * rs_init() and friends
- *
- * rs_init() is called at boot-time to initialize the serial driver.
- * ---------------------------------------------------------------------
- */
-
-/*
- * This routine prints out the appropriate serial driver version
- * number, and identifies which options were configured into this
- * driver.
- */
-static char serial_options[] __initdata =
-#ifdef CONFIG_HUB6
- " HUB-6"
-#define SERIAL_OPT
-#endif
-#ifdef CONFIG_SERIAL_MANY_PORTS
- " MANY_PORTS"
-#define SERIAL_OPT
-#endif
-#ifdef CONFIG_SERIAL_MULTIPORT
- " MULTIPORT"
-#define SERIAL_OPT
-#endif
-#ifdef CONFIG_SERIAL_SHARE_IRQ
- " SHARE_IRQ"
-#define SERIAL_OPT
-#endif
-#ifdef CONFIG_SERIAL_DETECT_IRQ
- " DETECT_IRQ"
-#define SERIAL_OPT
-#endif
-#ifdef ENABLE_SERIAL_PCI
- " SERIAL_PCI"
-#define SERIAL_OPT
-#endif
-#ifdef ENABLE_SERIAL_PNP
- " ISAPNP"
-#define SERIAL_OPT
-#endif
-#ifdef ENABLE_SERIAL_ACPI
- " SERIAL_ACPI"
-#define SERIAL_OPT
-#endif
-#ifdef SERIAL_OPT
- " enabled\n";
-#else
- " no serial options enabled\n";
-#endif
-#undef SERIAL_OPT
-
-static _INLINE_ void show_serial_version(void)
-{
- printk(KERN_INFO "%s version %s%s (%s) with%s", serial_name,
- serial_version, LOCAL_VERSTRING, serial_revdate,
- serial_options);
-}
-
-/*
- * This routine detect the IRQ of a serial port by clearing OUT2 when
- * no UART interrupt are requested (IER = 0) (*GPL*). This seems to work at
- * each time, as long as no other device permanently request the IRQ.
- * If no IRQ is detected, or multiple IRQ appear, this function returns 0.
- * The variable "state" and the field "state->port" should not be null.
- */
-static unsigned detect_uart_irq (struct serial_state * state)
-{
- int irq;
- unsigned long irqs;
- unsigned char save_mcr, save_ier;
- struct async_struct scr_info; /* serial_{in,out} because HUB6 */
-
-#ifdef CONFIG_SERIAL_MANY_PORTS
- unsigned char save_ICP=0; /* no warning */
- unsigned short ICP=0;
-
- if (state->flags & ASYNC_FOURPORT) {
- ICP = (state->port & 0xFE0) | 0x01F;
- save_ICP = inb_p(ICP);
- outb_p(0x80, ICP);
- (void) inb_p(ICP);
- }
-#endif
- scr_info.magic = SERIAL_MAGIC;
- scr_info.state = state;
- scr_info.port = state->port;
- scr_info.flags = state->flags;
-#ifdef CONFIG_HUB6
- scr_info.hub6 = state->hub6;
-#endif
- scr_info.io_type = state->io_type;
- scr_info.iomem_base = state->iomem_base;
- scr_info.iomem_reg_shift = state->iomem_reg_shift;
-
- /* forget possible initially masked and pending IRQ */
- probe_irq_off(probe_irq_on());
- save_mcr = serial_inp(&scr_info, UART_MCR);
- save_ier = serial_inp(&scr_info, UART_IER);
- serial_outp(&scr_info, UART_MCR, UART_MCR_OUT1 | UART_MCR_OUT2);
-
- irqs = probe_irq_on();
- serial_outp(&scr_info, UART_MCR, 0);
- udelay (10);
- if (state->flags & ASYNC_FOURPORT) {
- serial_outp(&scr_info, UART_MCR,
- UART_MCR_DTR | UART_MCR_RTS);
- } else {
- serial_outp(&scr_info, UART_MCR,
- UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2);
- }
- serial_outp(&scr_info, UART_IER, 0x0f); /* enable all intrs */
- (void)serial_inp(&scr_info, UART_LSR);
- (void)serial_inp(&scr_info, UART_RX);
- (void)serial_inp(&scr_info, UART_IIR);
- (void)serial_inp(&scr_info, UART_MSR);
- serial_outp(&scr_info, UART_TX, 0xFF);
- udelay (20);
- irq = probe_irq_off(irqs);
-
- serial_outp(&scr_info, UART_MCR, save_mcr);
- serial_outp(&scr_info, UART_IER, save_ier);
-#ifdef CONFIG_SERIAL_MANY_PORTS
- if (state->flags & ASYNC_FOURPORT)
- outb_p(save_ICP, ICP);
-#endif
- return (irq > 0)? irq : 0;
-}
-
-/*
- * This is a quickie test to see how big the FIFO is.
- * It doesn't work at all the time, more's the pity.
- */
-static int size_fifo(struct async_struct *info)
-{
- unsigned char old_fcr, old_mcr, old_dll, old_dlm;
- int count;
-
- old_fcr = serial_inp(info, UART_FCR);
- old_mcr = serial_inp(info, UART_MCR);
- serial_outp(info, UART_FCR, UART_FCR_ENABLE_FIFO |
- UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
- serial_outp(info, UART_MCR, UART_MCR_LOOP);
- serial_outp(info, UART_LCR, UART_LCR_DLAB);
- old_dll = serial_inp(info, UART_DLL);
- old_dlm = serial_inp(info, UART_DLM);
- serial_outp(info, UART_DLL, 0x01);
- serial_outp(info, UART_DLM, 0x00);
- serial_outp(info, UART_LCR, 0x03);
- for (count = 0; count < 256; count++)
- serial_outp(info, UART_TX, count);
- mdelay(20);
- for (count = 0; (serial_inp(info, UART_LSR) & UART_LSR_DR) &&
- (count < 256); count++)
- serial_inp(info, UART_RX);
- serial_outp(info, UART_FCR, old_fcr);
- serial_outp(info, UART_MCR, old_mcr);
- serial_outp(info, UART_LCR, UART_LCR_DLAB);
- serial_outp(info, UART_DLL, old_dll);
- serial_outp(info, UART_DLM, old_dlm);
-
- return count;
-}
-
-/*
- * This is a helper routine to autodetect StarTech/Exar/Oxsemi UART's.
- * When this function is called we know it is at least a StarTech
- * 16650 V2, but it might be one of several StarTech UARTs, or one of
- * its clones. (We treat the broken original StarTech 16650 V1 as a
- * 16550, and why not? Startech doesn't seem to even acknowledge its
- * existence.)
- *
- * What evil have men's minds wrought...
- */
-static void autoconfig_startech_uarts(struct async_struct *info,
- struct serial_state *state,
- unsigned long flags)
-{
- unsigned char scratch, scratch2, scratch3, scratch4;
-
- /*
- * First we check to see if it's an Oxford Semiconductor UART.
- *
- * If we have to do this here because some non-National
- * Semiconductor clone chips lock up if you try writing to the
- * LSR register (which serial_icr_read does)
- */
- if (state->type == PORT_16550A) {
- /*
- * EFR [4] must be set else this test fails
- *
- * This shouldn't be necessary, but Mike Hudson
- * (Exoray@isys.ca) claims that it's needed for 952
- * dual UART's (which are not recommended for new designs).
- */
- info->ACR = 0;
- serial_out(info, UART_LCR, 0xBF);
- serial_out(info, UART_EFR, 0x10);
- serial_out(info, UART_LCR, 0x00);
- /* Check for Oxford Semiconductor 16C950 */
- scratch = serial_icr_read(info, UART_ID1);
- scratch2 = serial_icr_read(info, UART_ID2);
- scratch3 = serial_icr_read(info, UART_ID3);
-
- if (scratch == 0x16 && scratch2 == 0xC9 &&
- (scratch3 == 0x50 || scratch3 == 0x52 ||
- scratch3 == 0x54)) {
- state->type = PORT_16C950;
- state->revision = serial_icr_read(info, UART_REV) |
- (scratch3 << 8);
- return;
- }
- }
-
- /*
- * We check for a XR16C850 by setting DLL and DLM to 0, and
- * then reading back DLL and DLM. If DLM reads back 0x10,
- * then the UART is a XR16C850 and the DLL contains the chip
- * revision. If DLM reads back 0x14, then the UART is a
- * XR16C854.
- *
- */
-
- /* Save the DLL and DLM */
-
- serial_outp(info, UART_LCR, UART_LCR_DLAB);
- scratch3 = serial_inp(info, UART_DLL);
- scratch4 = serial_inp(info, UART_DLM);
-
- serial_outp(info, UART_DLL, 0);
- serial_outp(info, UART_DLM, 0);
- scratch2 = serial_inp(info, UART_DLL);
- scratch = serial_inp(info, UART_DLM);
- serial_outp(info, UART_LCR, 0);
-
- if (scratch == 0x10 || scratch == 0x14) {
- if (scratch == 0x10)
- state->revision = scratch2;
- state->type = PORT_16850;
- return;
- }
-
- /* Restore the DLL and DLM */
-
- serial_outp(info, UART_LCR, UART_LCR_DLAB);
- serial_outp(info, UART_DLL, scratch3);
- serial_outp(info, UART_DLM, scratch4);
- serial_outp(info, UART_LCR, 0);
- /*
- * We distinguish between the '654 and the '650 by counting
- * how many bytes are in the FIFO. I'm using this for now,
- * since that's the technique that was sent to me in the
- * serial driver update, but I'm not convinced this works.
- * I've had problems doing this in the past. -TYT
- */
- if (size_fifo(info) == 64)
- state->type = PORT_16654;
- else
- state->type = PORT_16650V2;
-}
-
-/*
- * This routine is called by rs_init() to initialize a specific serial
- * port. It determines what type of UART chip this serial port is
- * using: 8250, 16450, 16550, 16550A. The important question is
- * whether or not this UART is a 16550A or not, since this will
- * determine whether or not we can use its FIFO features or not.
- */
-static void autoconfig(struct serial_state * state)
-{
- unsigned char status1, status2, scratch, scratch2, scratch3;
- unsigned char save_lcr, save_mcr;
- struct async_struct *info, scr_info;
- unsigned long flags;
-
- state->type = PORT_UNKNOWN;
-
-#ifdef SERIAL_DEBUG_AUTOCONF
- printk("Testing ttyS%d (0x%04lx, 0x%04x)...\n", state->line,
- state->port, (unsigned) state->iomem_base);
-#endif
-
- if (!CONFIGURED_SERIAL_PORT(state))
- return;
-
- info = &scr_info; /* This is just for serial_{in,out} */
-
- info->magic = SERIAL_MAGIC;
- info->state = state;
- info->port = state->port;
- info->flags = state->flags;
-#ifdef CONFIG_HUB6
- info->hub6 = state->hub6;
-#endif
- info->io_type = state->io_type;
- info->iomem_base = state->iomem_base;
- info->iomem_reg_shift = state->iomem_reg_shift;
-
- save_flags(flags); cli();
-
- if (!(state->flags & ASYNC_BUGGY_UART) &&
- !state->iomem_base) {
- /*
- * Do a simple existence test first; if we fail this,
- * there's no point trying anything else.
- *
- * 0x80 is used as a nonsense port to prevent against
- * false positives due to ISA bus float. The
- * assumption is that 0x80 is a non-existent port;
- * which should be safe since include/asm/io.h also
- * makes this assumption.
- */
- scratch = serial_inp(info, UART_IER);
- serial_outp(info, UART_IER, 0);
-#ifdef __i386__
- outb(0xff, 0x080);
-#endif
- scratch2 = serial_inp(info, UART_IER);
- serial_outp(info, UART_IER, 0x0F);
-#ifdef __i386__
- outb(0, 0x080);
-#endif
- scratch3 = serial_inp(info, UART_IER);
- serial_outp(info, UART_IER, scratch);
- if (scratch2 || scratch3 != 0x0F) {
-#ifdef SERIAL_DEBUG_AUTOCONF
- printk("serial: ttyS%d: simple autoconfig failed "
- "(%02x, %02x)\n", state->line,
- scratch2, scratch3);
-#endif
- restore_flags(flags);
- return; /* We failed; there's nothing here */
- }
- }
-
- save_mcr = serial_in(info, UART_MCR);
- save_lcr = serial_in(info, UART_LCR);
-
- /*
- * Check to see if a UART is really there. Certain broken
- * internal modems based on the Rockwell chipset fail this
- * test, because they apparently don't implement the loopback
- * test mode. So this test is skipped on the COM 1 through
- * COM 4 ports. This *should* be safe, since no board
- * manufacturer would be stupid enough to design a board
- * that conflicts with COM 1-4 --- we hope!
- */
- if (!(state->flags & ASYNC_SKIP_TEST)) {
- serial_outp(info, UART_MCR, UART_MCR_LOOP | 0x0A);
- status1 = serial_inp(info, UART_MSR) & 0xF0;
- serial_outp(info, UART_MCR, save_mcr);
- if (status1 != 0x90) {
-#ifdef SERIAL_DEBUG_AUTOCONF
- printk("serial: ttyS%d: no UART loopback failed\n",
- state->line);
-#endif
- restore_flags(flags);
- return;
- }
- }
- serial_outp(info, UART_LCR, 0xBF); /* set up for StarTech test */
- serial_outp(info, UART_EFR, 0); /* EFR is the same as FCR */
- serial_outp(info, UART_LCR, 0);
- serial_outp(info, UART_FCR, UART_FCR_ENABLE_FIFO);
- scratch = serial_in(info, UART_IIR) >> 6;
- switch (scratch) {
- case 0:
- state->type = PORT_16450;
- break;
- case 1:
- state->type = PORT_UNKNOWN;
- break;
- case 2:
- state->type = PORT_16550;
- break;
- case 3:
- state->type = PORT_16550A;
- break;
- }
- if (state->type == PORT_16550A) {
- /* Check for Startech UART's */
- serial_outp(info, UART_LCR, UART_LCR_DLAB);
- if (serial_in(info, UART_EFR) == 0) {
- state->type = PORT_16650;
- } else {
- serial_outp(info, UART_LCR, 0xBF);
- if (serial_in(info, UART_EFR) == 0)
- autoconfig_startech_uarts(info, state, flags);
- }
- }
- if (state->type == PORT_16550A) {
- /* Check for TI 16750 */
- serial_outp(info, UART_LCR, save_lcr | UART_LCR_DLAB);
- serial_outp(info, UART_FCR,
- UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
- scratch = serial_in(info, UART_IIR) >> 5;
- if (scratch == 7) {
- /*
- * If this is a 16750, and not a cheap UART
- * clone, then it should only go into 64 byte
- * mode if the UART_FCR7_64BYTE bit was set
- * while UART_LCR_DLAB was latched.
- */
- serial_outp(info, UART_FCR, UART_FCR_ENABLE_FIFO);
- serial_outp(info, UART_LCR, 0);
- serial_outp(info, UART_FCR,
- UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
- scratch = serial_in(info, UART_IIR) >> 5;
- if (scratch == 6)
- state->type = PORT_16750;
- }
- serial_outp(info, UART_FCR, UART_FCR_ENABLE_FIFO);
- }
-#if defined(CONFIG_SERIAL_RSA) && defined(MODULE)
- if (state->type == PORT_16550A) {
- int i;
-
- for (i = 0 ; i < PORT_RSA_MAX ; ++i) {
- if (!probe_rsa[i] && !force_rsa[i])
- break;
- if (((probe_rsa[i] != state->port) ||
- check_region(state->port + UART_RSA_BASE, 16)) &&
- (force_rsa[i] != state->port))
- continue;
- if (!enable_rsa(info))
- continue;
- state->type = PORT_RSA;
- state->baud_base = SERIAL_RSA_BAUD_BASE;
- break;
- }
- }
-#endif
- serial_outp(info, UART_LCR, save_lcr);
- if (state->type == PORT_16450) {
- scratch = serial_in(info, UART_SCR);
- serial_outp(info, UART_SCR, 0xa5);
- status1 = serial_in(info, UART_SCR);
- serial_outp(info, UART_SCR, 0x5a);
- status2 = serial_in(info, UART_SCR);
- serial_outp(info, UART_SCR, scratch);
-
- if ((status1 != 0xa5) || (status2 != 0x5a))
- state->type = PORT_8250;
- }
- state->xmit_fifo_size = uart_config[state->type].dfl_xmit_fifo_size;
-
- if (state->type == PORT_UNKNOWN) {
- restore_flags(flags);
- return;
- }
-
- if (info->port) {
-#ifdef CONFIG_SERIAL_RSA
- if (state->type == PORT_RSA)
- request_region(info->port + UART_RSA_BASE, 16,
- "serial_rsa(auto)");
- else
-#endif
- request_region(info->port,8,"serial(auto)");
- }
-
- /*
- * Reset the UART.
- */
-#ifdef CONFIG_SERIAL_RSA
- if (state->type == PORT_RSA)
- serial_outp(info, UART_RSA_FRR, 0);
-#endif
- serial_outp(info, UART_MCR, save_mcr);
- serial_outp(info, UART_FCR, (UART_FCR_ENABLE_FIFO |
- UART_FCR_CLEAR_RCVR |
- UART_FCR_CLEAR_XMIT));
- serial_outp(info, UART_FCR, 0);
- (void)serial_in(info, UART_RX);
- serial_outp(info, UART_IER, 0);
-
- restore_flags(flags);
-}
-
-int register_serial(struct serial_struct *req);
-void unregister_serial(int line);
-
-#if (LINUX_VERSION_CODE > 0x20100)
-EXPORT_SYMBOL(register_serial);
-EXPORT_SYMBOL(unregister_serial);
-#else
-static struct symbol_table serial_syms = {
-#include <linux/symtab_begin.h>
- X(register_serial),
- X(unregister_serial),
-#include <linux/symtab_end.h>
-};
-#endif
-
-
-#if defined(ENABLE_SERIAL_PCI) || defined(ENABLE_SERIAL_PNP)
-
-static void __devinit printk_pnp_dev_id(unsigned short vendor,
- unsigned short device)
-{
- printk("%c%c%c%x%x%x%x",
- 'A' + ((vendor >> 2) & 0x3f) - 1,
- 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
- 'A' + ((vendor >> 8) & 0x1f) - 1,
- (device >> 4) & 0x0f,
- device & 0x0f,
- (device >> 12) & 0x0f,
- (device >> 8) & 0x0f);
-}
-
-static _INLINE_ int get_pci_port(struct pci_dev *dev,
- struct pci_board *board,
- struct serial_struct *req,
- int idx)
-{
- unsigned long port;
- int base_idx;
- int max_port;
- int offset;
-
- base_idx = SPCI_FL_GET_BASE(board->flags);
- if (board->flags & SPCI_FL_BASE_TABLE)
- base_idx += idx;
-
- if (board->flags & SPCI_FL_REGION_SZ_CAP) {
- max_port = pci_resource_len(dev, base_idx) / 8;
- if (idx >= max_port)
- return 1;
- }
-
- offset = board->first_uart_offset;
-
- /* Timedia/SUNIX uses a mixture of BARs and offsets */
- /* Ugh, this is ugly as all hell --- TYT */
- if(dev->vendor == PCI_VENDOR_ID_TIMEDIA ) /* 0x1409 */
- switch(idx) {
- case 0: base_idx=0;
- break;
- case 1: base_idx=0; offset=8;
- break;
- case 2: base_idx=1;
- break;
- case 3: base_idx=1; offset=8;
- break;
- case 4: /* BAR 2*/
- case 5: /* BAR 3 */
- case 6: /* BAR 4*/
- case 7: base_idx=idx-2; /* BAR 5*/
- }
-
- /* Some Titan cards are also a little weird */
- if (dev->vendor == PCI_VENDOR_ID_TITAN &&
- (dev->device == PCI_DEVICE_ID_TITAN_400L ||
- dev->device == PCI_DEVICE_ID_TITAN_800L)) {
- switch (idx) {
- case 0: base_idx = 1;
- break;
- case 1: base_idx = 2;
- break;
- default:
- base_idx = 4;
- offset = 8 * (idx - 2);
- }
-
- }
-
- port = pci_resource_start(dev, base_idx) + offset;
-
- if ((board->flags & SPCI_FL_BASE_TABLE) == 0)
- port += idx * (board->uart_offset ? board->uart_offset : 8);
-
- if (IS_PCI_REGION_IOPORT(dev, base_idx)) {
- req->port = port;
- if (HIGH_BITS_OFFSET)
- req->port_high = port >> HIGH_BITS_OFFSET;
- else
- req->port_high = 0;
- return 0;
- }
- req->io_type = SERIAL_IO_MEM;
- req->iomem_base = ioremap(port, board->uart_offset);
- req->iomem_reg_shift = board->reg_shift;
- req->port = 0;
- return 0;
-}
-
-static _INLINE_ int get_pci_irq(struct pci_dev *dev,
- struct pci_board *board,
- int idx)
-{
- int base_idx;
-
- if ((board->flags & SPCI_FL_IRQRESOURCE) == 0)
- return dev->irq;
-
- base_idx = SPCI_FL_GET_IRQBASE(board->flags);
- if (board->flags & SPCI_FL_IRQ_TABLE)
- base_idx += idx;
-
- return PCI_IRQ_RESOURCE(dev, base_idx);
-}
-
-/*
- * Common enabler code shared by both PCI and ISAPNP probes
- */
-static void __devinit start_pci_pnp_board(struct pci_dev *dev,
- struct pci_board *board)
-{
- int k, line;
- struct serial_struct serial_req;
- int base_baud;
-
- if (PREPARE_FUNC(dev) && (PREPARE_FUNC(dev))(dev) < 0) {
- printk("serial: PNP device '");
- printk_pnp_dev_id(dev->vendor, dev->device);
- printk("' prepare failed\n");
- return;
- }
-
- if (ACTIVATE_FUNC(dev) && (ACTIVATE_FUNC(dev))(dev) < 0) {
- printk("serial: PNP device '");
- printk_pnp_dev_id(dev->vendor, dev->device);
- printk("' activate failed\n");
- return;
- }
-
- /*
- * Run the initialization function, if any
- */
- if (board->init_fn && ((board->init_fn)(dev, board, 1) != 0))
- return;
-
- /*
- * Register the serial board in the array if we need to
- * shutdown the board on a module unload or card removal
- */
- if (DEACTIVATE_FUNC(dev) || board->init_fn) {
- for (k=0; k < NR_PCI_BOARDS; k++)
- if (serial_pci_board[k].dev == 0)
- break;
- if (k >= NR_PCI_BOARDS)
- return;
- serial_pci_board[k].board = *board;
- serial_pci_board[k].dev = dev;
- }
-
- base_baud = board->base_baud;
- if (!base_baud)
- base_baud = BASE_BAUD;
- memset(&serial_req, 0, sizeof(serial_req));
-
- for (k=0; k < board->num_ports; k++) {
- serial_req.irq = get_pci_irq(dev, board, k);
- if (get_pci_port(dev, board, &serial_req, k))
- break;
- serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;
-#ifdef SERIAL_DEBUG_PCI
- printk("Setup PCI/PNP port: port %x, irq %d, type %d\n",
- serial_req.port, serial_req.irq, serial_req.io_type);
-#endif
- line = register_serial(&serial_req);
- if (line < 0)
- break;
- rs_table[line].baud_base = base_baud;
- rs_table[line].dev = dev;
- }
-}
-#endif /* ENABLE_SERIAL_PCI || ENABLE_SERIAL_PNP */
-
-#ifdef ENABLE_SERIAL_PCI
-/*
- * Some PCI serial cards using the PLX 9050 PCI interface chip require
- * that the card interrupt be explicitly enabled or disabled. This
- * seems to be mainly needed on card using the PLX which also use I/O
- * mapped memory.
- */
-static int __devinit
-pci_plx9050_fn(struct pci_dev *dev, struct pci_board *board, int enable)
-{
- u8 data, *p, irq_config;
- int pci_config;
-
- irq_config = 0x41;
- pci_config = PCI_COMMAND_MEMORY;
- if (dev->vendor == PCI_VENDOR_ID_PANACOM)
- irq_config = 0x43;
- if ((dev->vendor == PCI_VENDOR_ID_PLX) &&
- (dev->device == PCI_DEVICE_ID_PLX_ROMULUS)) {
- /*
- * As the megawolf cards have the int pins active
- * high, and have 2 UART chips, both ints must be
- * enabled on the 9050. Also, the UARTS are set in
- * 16450 mode by default, so we have to enable the
- * 16C950 'enhanced' mode so that we can use the deep
- * FIFOs
- */
- irq_config = 0x5b;
- pci_config = PCI_COMMAND_MEMORY | PCI_COMMAND_IO;
- }
-
- pci_read_config_byte(dev, PCI_COMMAND, &data);
-
- if (enable)
- pci_write_config_byte(dev, PCI_COMMAND,
- data | pci_config);
-
- /* enable/disable interrupts */
- p = ioremap(pci_resource_start(dev, 0), 0x80);
- writel(enable ? irq_config : 0x00, (unsigned long)p + 0x4c);
- iounmap(p);
-
- if (!enable)
- pci_write_config_byte(dev, PCI_COMMAND,
- data & ~pci_config);
- return 0;
-}
-
-
-/*
- * SIIG serial cards have an PCI interface chip which also controls
- * the UART clocking frequency. Each UART can be clocked independently
- * (except cards equiped with 4 UARTs) and initial clocking settings
- * are stored in the EEPROM chip. It can cause problems because this
- * version of serial driver doesn't support differently clocked UART's
- * on single PCI card. To prevent this, initialization functions set
- * high frequency clocking for all UART's on given card. It is safe (I
- * hope) because it doesn't touch EEPROM settings to prevent conflicts
- * with other OSes (like M$ DOS).
- *
- * SIIG support added by Andrey Panin <pazke@mail.tp.ru>, 10/1999
- *
- * There is two family of SIIG serial cards with different PCI
- * interface chip and different configuration methods:
- * - 10x cards have control registers in IO and/or memory space;
- * - 20x cards have control registers in standard PCI configuration space.
- */
-
-#define PCI_DEVICE_ID_SIIG_1S_10x (PCI_DEVICE_ID_SIIG_1S_10x_550 & 0xfffc)
-#define PCI_DEVICE_ID_SIIG_2S_10x (PCI_DEVICE_ID_SIIG_2S_10x_550 & 0xfff8)
-
-static int __devinit
-pci_siig10x_fn(struct pci_dev *dev, struct pci_board *board, int enable)
-{
- u16 data, *p;
-
- if (!enable) return 0;
-
- p = ioremap(pci_resource_start(dev, 0), 0x80);
-
- switch (dev->device & 0xfff8) {
- case PCI_DEVICE_ID_SIIG_1S_10x: /* 1S */
- data = 0xffdf;
- break;
- case PCI_DEVICE_ID_SIIG_2S_10x: /* 2S, 2S1P */
- data = 0xf7ff;
- break;
- default: /* 1S1P, 4S */
- data = 0xfffb;
- break;
- }
-
- writew(readw((unsigned long) p + 0x28) & data, (unsigned long) p + 0x28);
- iounmap(p);
- return 0;
-}
-
-#define PCI_DEVICE_ID_SIIG_2S_20x (PCI_DEVICE_ID_SIIG_2S_20x_550 & 0xfffc)
-#define PCI_DEVICE_ID_SIIG_2S1P_20x (PCI_DEVICE_ID_SIIG_2S1P_20x_550 & 0xfffc)
-
-static int __devinit
-pci_siig20x_fn(struct pci_dev *dev, struct pci_board *board, int enable)
-{
- u8 data;
-
- if (!enable) return 0;
-
- /* Change clock frequency for the first UART. */
- pci_read_config_byte(dev, 0x6f, &data);
- pci_write_config_byte(dev, 0x6f, data & 0xef);
-
- /* If this card has 2 UART, we have to do the same with second UART. */
- if (((dev->device & 0xfffc) == PCI_DEVICE_ID_SIIG_2S_20x) ||
- ((dev->device & 0xfffc) == PCI_DEVICE_ID_SIIG_2S1P_20x)) {
- pci_read_config_byte(dev, 0x73, &data);
- pci_write_config_byte(dev, 0x73, data & 0xef);
- }
- return 0;
-}
-
-/* Added for EKF Intel i960 serial boards */
-static int __devinit
-pci_inteli960ni_fn(struct pci_dev *dev,
- struct pci_board *board,
- int enable)
-{
- unsigned long oldval;
-
- if (!(pci_get_subdevice(dev) & 0x1000))
- return(-1);
-
- if (!enable) /* is there something to deinit? */
- return(0);
-
-#ifdef SERIAL_DEBUG_PCI
- printk(KERN_DEBUG " Subsystem ID %lx (intel 960)\n",
- (unsigned long) board->subdevice);
-#endif
- /* is firmware started? */
- pci_read_config_dword(dev, 0x44, (void*) &oldval);
- if (oldval == 0x00001000L) { /* RESET value */
- printk(KERN_DEBUG "Local i960 firmware missing");
- return(-1);
- }
- return(0);
-}
-
-/*
- * Timedia has an explosion of boards, and to avoid the PCI table from
- * growing *huge*, we use this function to collapse some 70 entries
- * in the PCI table into one, for sanity's and compactness's sake.
- */
-static unsigned short timedia_single_port[] = {
- 0x4025, 0x4027, 0x4028, 0x5025, 0x5027, 0 };
-static unsigned short timedia_dual_port[] = {
- 0x0002, 0x4036, 0x4037, 0x4038, 0x4078, 0x4079, 0x4085,
- 0x4088, 0x4089, 0x5037, 0x5078, 0x5079, 0x5085, 0x6079,
- 0x7079, 0x8079, 0x8137, 0x8138, 0x8237, 0x8238, 0x9079,
- 0x9137, 0x9138, 0x9237, 0x9238, 0xA079, 0xB079, 0xC079,
- 0xD079, 0 };
-static unsigned short timedia_quad_port[] = {
- 0x4055, 0x4056, 0x4095, 0x4096, 0x5056, 0x8156, 0x8157,
- 0x8256, 0x8257, 0x9056, 0x9156, 0x9157, 0x9158, 0x9159,
- 0x9256, 0x9257, 0xA056, 0xA157, 0xA158, 0xA159, 0xB056,
- 0xB157, 0 };
-static unsigned short timedia_eight_port[] = {
- 0x4065, 0x4066, 0x5065, 0x5066, 0x8166, 0x9066, 0x9166,
- 0x9167, 0x9168, 0xA066, 0xA167, 0xA168, 0 };
-static struct timedia_struct {
- int num;
- unsigned short *ids;
-} timedia_data[] = {
- { 1, timedia_single_port },
- { 2, timedia_dual_port },
- { 4, timedia_quad_port },
- { 8, timedia_eight_port },
- { 0, 0 }
-};
-
-static int __devinit
-pci_timedia_fn(struct pci_dev *dev, struct pci_board *board, int enable)
-{
- int i, j;
- unsigned short *ids;
-
- if (!enable)
- return 0;
-
- for (i=0; timedia_data[i].num; i++) {
- ids = timedia_data[i].ids;
- for (j=0; ids[j]; j++) {
- if (pci_get_subdevice(dev) == ids[j]) {
- board->num_ports = timedia_data[i].num;
- return 0;
- }
- }
- }
- return 0;
-}
-
-static int __devinit
-pci_xircom_fn(struct pci_dev *dev, struct pci_board *board, int enable)
-{
- __set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(HZ/10);
- return 0;
-}
-
-/*
- * This is the configuration table for all of the PCI serial boards
- * which we support. It is directly indexed by the pci_board_num_t enum
- * value, which is encoded in the pci_device_id PCI probe table's
- * driver_data member.
- */
-enum pci_board_num_t {
- pbn_b0_1_115200,
- pbn_default = 0,
-
- pbn_b0_2_115200,
- pbn_b0_4_115200,
-
- pbn_b0_1_921600,
- pbn_b0_2_921600,
- pbn_b0_4_921600,
-
- pbn_b0_bt_1_115200,
- pbn_b0_bt_2_115200,
- pbn_b0_bt_1_460800,
- pbn_b0_bt_2_460800,
-
- pbn_b1_1_115200,
- pbn_b1_2_115200,
- pbn_b1_4_115200,
- pbn_b1_8_115200,
-
- pbn_b1_2_921600,
- pbn_b1_4_921600,
- pbn_b1_8_921600,
-
- pbn_b1_2_1382400,
- pbn_b1_4_1382400,
- pbn_b1_8_1382400,
-
- pbn_b2_8_115200,
- pbn_b2_4_460800,
- pbn_b2_8_460800,
- pbn_b2_16_460800,
- pbn_b2_4_921600,
- pbn_b2_8_921600,
-
- pbn_b2_bt_1_115200,
- pbn_b2_bt_2_115200,
- pbn_b2_bt_4_115200,
- pbn_b2_bt_2_921600,
-
- pbn_panacom,
- pbn_panacom2,
- pbn_panacom4,
- pbn_plx_romulus,
- pbn_oxsemi,
- pbn_timedia,
- pbn_intel_i960,
- pbn_sgi_ioc3,
-#ifdef CONFIG_DDB5074
- pbn_nec_nile4,
-#endif
-#if 0
- pbn_dci_pccom8,
-#endif
- pbn_xircom_combo,
-
- pbn_siig10x_0,
- pbn_siig10x_1,
- pbn_siig10x_2,
- pbn_siig10x_4,
- pbn_siig20x_0,
- pbn_siig20x_2,
- pbn_siig20x_4,
-
- pbn_computone_4,
- pbn_computone_6,
- pbn_computone_8,
-};
-
-static struct pci_board pci_boards[] __devinitdata = {
- /*
- * PCI Flags, Number of Ports, Base (Maximum) Baud Rate,
- * Offset to get to next UART's registers,
- * Register shift to use for memory-mapped I/O,
- * Initialization function, first UART offset
- */
-
- /* Generic serial board, pbn_b0_1_115200, pbn_default */
- { SPCI_FL_BASE0, 1, 115200 }, /* pbn_b0_1_115200,
- pbn_default */
-
- { SPCI_FL_BASE0, 2, 115200 }, /* pbn_b0_2_115200 */
- { SPCI_FL_BASE0, 4, 115200 }, /* pbn_b0_4_115200 */
-
- { SPCI_FL_BASE0, 1, 921600 }, /* pbn_b0_1_921600 */
- { SPCI_FL_BASE0, 2, 921600 }, /* pbn_b0_2_921600 */
- { SPCI_FL_BASE0, 4, 921600 }, /* pbn_b0_4_921600 */
-
- { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 }, /* pbn_b0_bt_1_115200 */
- { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 }, /* pbn_b0_bt_2_115200 */
- { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 460800 }, /* pbn_b0_bt_1_460800 */
- { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 460800 }, /* pbn_b0_bt_2_460800 */
-
- { SPCI_FL_BASE1, 1, 115200 }, /* pbn_b1_1_115200 */
- { SPCI_FL_BASE1, 2, 115200 }, /* pbn_b1_2_115200 */
- { SPCI_FL_BASE1, 4, 115200 }, /* pbn_b1_4_115200 */
- { SPCI_FL_BASE1, 8, 115200 }, /* pbn_b1_8_115200 */
-
- { SPCI_FL_BASE1, 2, 921600 }, /* pbn_b1_2_921600 */
- { SPCI_FL_BASE1, 4, 921600 }, /* pbn_b1_4_921600 */
- { SPCI_FL_BASE1, 8, 921600 }, /* pbn_b1_8_921600 */
-
- { SPCI_FL_BASE1, 2, 1382400 }, /* pbn_b1_2_1382400 */
- { SPCI_FL_BASE1, 4, 1382400 }, /* pbn_b1_4_1382400 */
- { SPCI_FL_BASE1, 8, 1382400 }, /* pbn_b1_8_1382400 */
-
- { SPCI_FL_BASE2, 8, 115200 }, /* pbn_b2_8_115200 */
- { SPCI_FL_BASE2, 4, 460800 }, /* pbn_b2_4_460800 */
- { SPCI_FL_BASE2, 8, 460800 }, /* pbn_b2_8_460800 */
- { SPCI_FL_BASE2, 16, 460800 }, /* pbn_b2_16_460800 */
- { SPCI_FL_BASE2, 4, 921600 }, /* pbn_b2_4_921600 */
- { SPCI_FL_BASE2, 8, 921600 }, /* pbn_b2_8_921600 */
-
- { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 1, 115200 }, /* pbn_b2_bt_1_115200 */
- { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 2, 115200 }, /* pbn_b2_bt_2_115200 */
- { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 4, 115200 }, /* pbn_b2_bt_4_115200 */
- { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 2, 921600 }, /* pbn_b2_bt_2_921600 */
-
- { SPCI_FL_BASE2, 2, 921600, /* IOMEM */ /* pbn_panacom */
- 0x400, 7, pci_plx9050_fn },
- { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 2, 921600, /* pbn_panacom2 */
- 0x400, 7, pci_plx9050_fn },
- { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 4, 921600, /* pbn_panacom4 */
- 0x400, 7, pci_plx9050_fn },
- { SPCI_FL_BASE2, 4, 921600, /* pbn_plx_romulus */
- 0x20, 2, pci_plx9050_fn, 0x03 },
- /* This board uses the size of PCI Base region 0 to
- * signal now many ports are available */
- { SPCI_FL_BASE0 | SPCI_FL_REGION_SZ_CAP, 32, 115200 }, /* pbn_oxsemi */
- { SPCI_FL_BASE_TABLE, 1, 921600, /* pbn_timedia */
- 0, 0, pci_timedia_fn },
- /* EKF addition for i960 Boards form EKF with serial port */
- { SPCI_FL_BASE0, 32, 921600, /* max 256 ports */ /* pbn_intel_i960 */
- 8<<2, 2, pci_inteli960ni_fn, 0x10000},
- { SPCI_FL_BASE0 | SPCI_FL_IRQRESOURCE, /* pbn_sgi_ioc3 */
- 1, 458333, 0, 0, 0, 0x20178 },
-#ifdef CONFIG_DDB5074
- /*
- * NEC Vrc-5074 (Nile 4) builtin UART.
- * Conditionally compiled in since this is a motherboard device.
- */
- { SPCI_FL_BASE0, 1, 520833, /* pbn_nec_nile4 */
- 64, 3, NULL, 0x300 },
-#endif
-#if 0 /* PCI_DEVICE_ID_DCI_PCCOM8 ? */ /* pbn_dci_pccom8 */
- { SPCI_FL_BASE3, 8, 115200, 8 },
-#endif
- { SPCI_FL_BASE0, 1, 115200, /* pbn_xircom_combo */
- 0, 0, pci_xircom_fn },
-
- { SPCI_FL_BASE2, 1, 460800, /* pbn_siig10x_0 */
- 0, 0, pci_siig10x_fn },
- { SPCI_FL_BASE2, 1, 921600, /* pbn_siig10x_1 */
- 0, 0, pci_siig10x_fn },
- { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 2, 921600, /* pbn_siig10x_2 */
- 0, 0, pci_siig10x_fn },
- { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 4, 921600, /* pbn_siig10x_4 */
- 0, 0, pci_siig10x_fn },
- { SPCI_FL_BASE0, 1, 921600, /* pbn_siix20x_0 */
- 0, 0, pci_siig20x_fn },
- { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 921600, /* pbn_siix20x_2 */
- 0, 0, pci_siig20x_fn },
- { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 4, 921600, /* pbn_siix20x_4 */
- 0, 0, pci_siig20x_fn },
-
- { SPCI_FL_BASE0, 4, 921600, /* IOMEM */ /* pbn_computone_4 */
- 0x40, 2, NULL, 0x200 },
- { SPCI_FL_BASE0, 6, 921600, /* IOMEM */ /* pbn_computone_6 */
- 0x40, 2, NULL, 0x200 },
- { SPCI_FL_BASE0, 8, 921600, /* IOMEM */ /* pbn_computone_8 */
- 0x40, 2, NULL, 0x200 },
-};
-
-/*
- * Given a complete unknown PCI device, try to use some heuristics to
- * guess what the configuration might be, based on the pitiful PCI
- * serial specs. Returns 0 on success, 1 on failure.
- */
-static int __devinit serial_pci_guess_board(struct pci_dev *dev,
- struct pci_board *board)
-{
- int num_iomem = 0, num_port = 0, first_port = -1;
- int i;
-
- /*
- * If it is not a communications device or the programming
- * interface is greater than 6, give up.
- *
- * (Should we try to make guesses for multiport serial devices
- * later?)
- */
- if ((((dev->class >> 8) != PCI_CLASS_COMMUNICATION_SERIAL) &&
- ((dev->class >> 8) != PCI_CLASS_COMMUNICATION_MODEM)) ||
- (dev->class & 0xff) > 6)
- return 1;
-
- for (i=0; i < 6; i++) {
- if (IS_PCI_REGION_IOPORT(dev, i)) {
- num_port++;
- if (first_port == -1)
- first_port = i;
- }
- if (IS_PCI_REGION_IOMEM(dev, i))
- num_iomem++;
- }
-
- /*
- * If there is 1 or 0 iomem regions, and exactly one port, use
- * it.
- */
- if (num_iomem <= 1 && num_port == 1) {
- board->flags = first_port;
- return 0;
- }
- return 1;
-}
-
-static int __devinit serial_init_one(struct pci_dev *dev,
- const struct pci_device_id *ent)
-{
- struct pci_board *board, tmp;
- int rc;
-
- board = &pci_boards[ent->driver_data];
-
- rc = pci_enable_device(dev);
- if (rc) return rc;
-
- if (ent->driver_data == pbn_default &&
- serial_pci_guess_board(dev, board))
- return -ENODEV;
- else if (serial_pci_guess_board(dev, &tmp) == 0) {
- printk(KERN_INFO "Redundant entry in serial pci_table. "
- "Please send the output of\n"
- "lspci -vv, this message (%04x,%04x,%04x,%04x)\n"
- "and the manufacturer and name of "
- "serial board or modem board\n"
- "to serial-pci-info@lists.sourceforge.net.\n",
- dev->vendor, dev->device,
- pci_get_subvendor(dev), pci_get_subdevice(dev));
- }
-
- start_pci_pnp_board(dev, board);
-
- return 0;
-}
-
-static void __devexit serial_remove_one(struct pci_dev *dev)
-{
- int i;
-
- /*
- * Iterate through all of the ports finding those that belong
- * to this PCI device.
- */
- for(i = 0; i < NR_PORTS; i++) {
- if (rs_table[i].dev != dev)
- continue;
- unregister_serial(i);
- rs_table[i].dev = 0;
- }
- /*
- * Now execute any board-specific shutdown procedure
- */
- for (i=0; i < NR_PCI_BOARDS; i++) {
- struct pci_board_inst *brd = &serial_pci_board[i];
-
- if (serial_pci_board[i].dev != dev)
- continue;
- if (brd->board.init_fn)
- (brd->board.init_fn)(brd->dev, &brd->board, 0);
- if (DEACTIVATE_FUNC(brd->dev))
- (DEACTIVATE_FUNC(brd->dev))(brd->dev);
- serial_pci_board[i].dev = 0;
- }
-}
-
-
-static struct pci_device_id serial_pci_tbl[] __devinitdata = {
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_232, 0, 0,
- pbn_b1_8_1382400 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_232, 0, 0,
- pbn_b1_4_1382400 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_232, 0, 0,
- pbn_b1_2_1382400 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_232, 0, 0,
- pbn_b1_8_1382400 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_232, 0, 0,
- pbn_b1_4_1382400 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_232, 0, 0,
- pbn_b1_2_1382400 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_485, 0, 0,
- pbn_b1_8_921600 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_485_4_4, 0, 0,
- pbn_b1_8_921600 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_485, 0, 0,
- pbn_b1_4_921600 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_485_2_2, 0, 0,
- pbn_b1_4_921600 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_485, 0, 0,
- pbn_b1_2_921600 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_485_2_6, 0, 0,
- pbn_b1_8_921600 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH081101V1, 0, 0,
- pbn_b1_8_921600 },
- { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
- PCI_SUBVENDOR_ID_CONNECT_TECH,
- PCI_SUBDEVICE_ID_CONNECT_TECH_BH041101V1, 0, 0,
- pbn_b1_4_921600 },
-
- { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_U530,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_bt_1_115200 },
- { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM2,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_bt_2_115200 },
- { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM422,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_bt_4_115200 },
- { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM232,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_bt_2_115200 },
- { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_COMM4,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_bt_4_115200 },
- { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_COMM8,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_8_115200 },
-
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_GTEK_SERIAL2,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_bt_2_115200 },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_SPCOM200,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_bt_2_921600 },
- /* VScom SPCOM800, from sl@s.pl */
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_SPCOM800,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_8_921600 },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_1077,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_4_921600 },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
- PCI_SUBVENDOR_ID_KEYSPAN,
- PCI_SUBDEVICE_ID_KEYSPAN_SX2, 0, 0,
- pbn_panacom },
- { PCI_VENDOR_ID_PANACOM, PCI_DEVICE_ID_PANACOM_QUADMODEM,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_panacom4 },
- { PCI_VENDOR_ID_PANACOM, PCI_DEVICE_ID_PANACOM_DUALMODEM,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_panacom2 },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
- PCI_SUBVENDOR_ID_CHASE_PCIFAST,
- PCI_SUBDEVICE_ID_CHASE_PCIFAST4, 0, 0,
- pbn_b2_4_460800 },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
- PCI_SUBVENDOR_ID_CHASE_PCIFAST,
- PCI_SUBDEVICE_ID_CHASE_PCIFAST8, 0, 0,
- pbn_b2_8_460800 },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
- PCI_SUBVENDOR_ID_CHASE_PCIFAST,
- PCI_SUBDEVICE_ID_CHASE_PCIFAST16, 0, 0,
- pbn_b2_16_460800 },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
- PCI_SUBVENDOR_ID_CHASE_PCIFAST,
- PCI_SUBDEVICE_ID_CHASE_PCIFAST16FMC, 0, 0,
- pbn_b2_16_460800 },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
- PCI_SUBVENDOR_ID_CHASE_PCIRAS,
- PCI_SUBDEVICE_ID_CHASE_PCIRAS4, 0, 0,
- pbn_b2_4_460800 },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
- PCI_SUBVENDOR_ID_CHASE_PCIRAS,
- PCI_SUBDEVICE_ID_CHASE_PCIRAS8, 0, 0,
- pbn_b2_8_460800 },
- /* Megawolf Romulus PCI Serial Card, from Mike Hudson */
- /* (Exoray@isys.ca) */
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_ROMULUS,
- 0x10b5, 0x106a, 0, 0,
- pbn_plx_romulus },
- { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_QSC100,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b1_4_115200 },
- { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSC100,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b1_2_115200 },
- { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_ESC100D,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b1_8_115200 },
- { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_ESC100M,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b1_8_115200 },
- { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_OXSEMI_16PCI954,
- PCI_VENDOR_ID_SPECIALIX, PCI_SUBDEVICE_ID_SPECIALIX_SPEED4, 0, 0,
- pbn_b0_4_921600 },
- { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_4_115200 },
- { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI952,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_2_115200 },
-
- /* Digitan DS560-558, from jimd@esoft.com */
- { PCI_VENDOR_ID_ATT, PCI_DEVICE_ID_ATT_VENUS_MODEM,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b1_1_115200 },
-
- /* 3Com US Robotics 56k Voice Internal PCI model 5610 */
- { PCI_VENDOR_ID_USR, 0x1008,
- PCI_ANY_ID, PCI_ANY_ID, },
-
- /* Titan Electronic cards */
- { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_100,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_1_921600 },
- { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_2_921600 },
- { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_400,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_4_921600 },
- { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_800B,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_4_921600 },
- { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_100L,
- PCI_ANY_ID, PCI_ANY_ID,
- SPCI_FL_BASE1, 1, 921600 },
- { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200L,
- PCI_ANY_ID, PCI_ANY_ID,
- SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 2, 921600 },
- /* The 400L and 800L have a custom hack in get_pci_port */
- { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_400L,
- PCI_ANY_ID, PCI_ANY_ID,
- SPCI_FL_BASE_TABLE, 4, 921600 },
- { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_800L,
- PCI_ANY_ID, PCI_ANY_ID,
- SPCI_FL_BASE_TABLE, 8, 921600 },
-
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_10x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_10x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_10x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_1 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_1 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_1 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_10x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_10x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_10x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_10x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_4 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_10x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_4 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_10x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig10x_4 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_20x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_20x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_20x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_0 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_20x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_20x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_20x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_2 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_20x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_4 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_20x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_4 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_20x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_siig20x_4 },
-
- /* Computone devices submitted by Doug McNash dmcnash@computone.com */
- { PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_PG,
- PCI_SUBVENDOR_ID_COMPUTONE, PCI_SUBDEVICE_ID_COMPUTONE_PG4,
- 0, 0, pbn_computone_4 },
- { PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_PG,
- PCI_SUBVENDOR_ID_COMPUTONE, PCI_SUBDEVICE_ID_COMPUTONE_PG8,
- 0, 0, pbn_computone_8 },
- { PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_PG,
- PCI_SUBVENDOR_ID_COMPUTONE, PCI_SUBDEVICE_ID_COMPUTONE_PG6,
- 0, 0, pbn_computone_6 },
-
- { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI95N,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_oxsemi },
- { PCI_VENDOR_ID_TIMEDIA, PCI_DEVICE_ID_TIMEDIA_1889,
- PCI_VENDOR_ID_TIMEDIA, PCI_ANY_ID, 0, 0, pbn_timedia },
-
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_DSERIAL,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_bt_2_115200 },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_QUATRO_A,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_bt_2_115200 },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_QUATRO_B,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_bt_2_115200 },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_PORT_PLUS,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_bt_2_460800 },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_QUAD_A,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_bt_2_460800 },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_QUAD_B,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_bt_2_460800 },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_SSERIAL,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_bt_1_115200 },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_PORT_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b0_bt_1_460800 },
-
- /* RAStel 2 port modem, gerg@moreton.com.au */
- { PCI_VENDOR_ID_MORETON, PCI_DEVICE_ID_RASTEL_2PORT,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_b2_bt_2_115200 },
-
- /* EKF addition for i960 Boards form EKF with serial port */
- { PCI_VENDOR_ID_INTEL, 0x1960,
- 0xE4BF, PCI_ANY_ID, 0, 0,
- pbn_intel_i960 },
-
- /* Xircom Cardbus/Ethernet combos */
- { PCI_VENDOR_ID_XIRCOM, PCI_DEVICE_ID_XIRCOM_X3201_MDM,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_xircom_combo },
-
- /*
- * Untested PCI modems, sent in from various folks...
- */
-
- /* Elsa Model 56K PCI Modem, from Andreas Rath <arh@01019freenet.de> */
- { PCI_VENDOR_ID_ROCKWELL, 0x1004,
- 0x1048, 0x1500, 0, 0,
- pbn_b1_1_115200 },
-
- { PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC3,
- 0xFF00, 0, 0, 0,
- pbn_sgi_ioc3 },
-
-#ifdef CONFIG_DDB5074
- /*
- * NEC Vrc-5074 (Nile 4) builtin UART.
- * Conditionally compiled in since this is a motherboard device.
- */
- { PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_NILE4,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_nec_nile4 },
-#endif
-
-#if 0 /* PCI_DEVICE_ID_DCI_PCCOM8 ? */
- { PCI_VENDOR_ID_DCI, PCI_DEVICE_ID_DCI_PCCOM8,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_dci_pccom8 },
-#endif
-
- { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_COMMUNICATION_SERIAL << 8, 0xffff00, },
- { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_COMMUNICATION_MODEM << 8, 0xffff00, },
- { 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, serial_pci_tbl);
-
-static struct pci_driver serial_pci_driver = {
- name: "serial",
- probe: serial_init_one,
- remove: __devexit_p(serial_remove_one),
- id_table: serial_pci_tbl,
-};
-
-
-/*
- * Query PCI space for known serial boards
- * If found, add them to the PCI device space in rs_table[]
- *
- * Accept a maximum of eight boards
- *
- */
-static void __devinit probe_serial_pci(void)
-{
-#ifdef SERIAL_DEBUG_PCI
- printk(KERN_DEBUG "Entered probe_serial_pci()\n");
-#endif
-
- /* Register call PCI serial devices. Null out
- * the driver name upon failure, as a signal
- * not to attempt to unregister the driver later
- */
- if (pci_module_init (&serial_pci_driver) != 0)
- serial_pci_driver.name = "";
-
-#ifdef SERIAL_DEBUG_PCI
- printk(KERN_DEBUG "Leaving probe_serial_pci() (probe finished)\n");
-#endif
- return;
-}
-
-#endif /* ENABLE_SERIAL_PCI */
-
-#ifdef ENABLE_SERIAL_PNP
-
-struct pnp_board {
- unsigned short vendor;
- unsigned short device;
-};
-
-static struct pnp_board pnp_devices[] __devinitdata = {
- /* Archtek America Corp. */
- /* Archtek SmartLink Modem 3334BT Plug & Play */
- { ISAPNP_VENDOR('A', 'A', 'C'), ISAPNP_DEVICE(0x000F) },
- /* Anchor Datacomm BV */
- /* SXPro 144 External Data Fax Modem Plug & Play */
- { ISAPNP_VENDOR('A', 'D', 'C'), ISAPNP_DEVICE(0x0001) },
- /* SXPro 288 External Data Fax Modem Plug & Play */
- { ISAPNP_VENDOR('A', 'D', 'C'), ISAPNP_DEVICE(0x0002) },
- /* Rockwell 56K ACF II Fax+Data+Voice Modem */
- { ISAPNP_VENDOR('A', 'K', 'Y'), ISAPNP_DEVICE(0x1021) },
- /* AZT3005 PnP SOUND DEVICE */
- { ISAPNP_VENDOR('A', 'Z', 'T'), ISAPNP_DEVICE(0x4001) },
- /* Best Data Products Inc. Smart One 336F PnP Modem */
- { ISAPNP_VENDOR('B', 'D', 'P'), ISAPNP_DEVICE(0x3336) },
- /* Boca Research */
- /* Boca Complete Ofc Communicator 14.4 Data-FAX */
- { ISAPNP_VENDOR('B', 'R', 'I'), ISAPNP_DEVICE(0x0A49) },
- /* Boca Research 33,600 ACF Modem */
- { ISAPNP_VENDOR('B', 'R', 'I'), ISAPNP_DEVICE(0x1400) },
- /* Boca 33.6 Kbps Internal FD34FSVD */
- { ISAPNP_VENDOR('B', 'R', 'I'), ISAPNP_DEVICE(0x3400) },
- /* Boca 33.6 Kbps Internal FD34FSVD */
- { ISAPNP_VENDOR('B', 'R', 'I'), ISAPNP_DEVICE(0x0A49) },
- /* Best Data Products Inc. Smart One 336F PnP Modem */
- { ISAPNP_VENDOR('B', 'D', 'P'), ISAPNP_DEVICE(0x3336) },
- /* Computer Peripherals Inc */
- /* EuroViVa CommCenter-33.6 SP PnP */
- { ISAPNP_VENDOR('C', 'P', 'I'), ISAPNP_DEVICE(0x4050) },
- /* Creative Labs */
- /* Creative Labs Phone Blaster 28.8 DSVD PnP Voice */
- { ISAPNP_VENDOR('C', 'T', 'L'), ISAPNP_DEVICE(0x3001) },
- /* Creative Labs Modem Blaster 28.8 DSVD PnP Voice */
- { ISAPNP_VENDOR('C', 'T', 'L'), ISAPNP_DEVICE(0x3011) },
- /* Creative */
- /* Creative Modem Blaster Flash56 DI5601-1 */
- { ISAPNP_VENDOR('D', 'M', 'B'), ISAPNP_DEVICE(0x1032) },
- /* Creative Modem Blaster V.90 DI5660 */
- { ISAPNP_VENDOR('D', 'M', 'B'), ISAPNP_DEVICE(0x2001) },
- /* FUJITSU */
- /* Fujitsu 33600 PnP-I2 R Plug & Play */
- { ISAPNP_VENDOR('F', 'U', 'J'), ISAPNP_DEVICE(0x0202) },
- /* Fujitsu FMV-FX431 Plug & Play */
- { ISAPNP_VENDOR('F', 'U', 'J'), ISAPNP_DEVICE(0x0205) },
- /* Fujitsu 33600 PnP-I4 R Plug & Play */
- { ISAPNP_VENDOR('F', 'U', 'J'), ISAPNP_DEVICE(0x0206) },
- /* Fujitsu Fax Voice 33600 PNP-I5 R Plug & Play */
- { ISAPNP_VENDOR('F', 'U', 'J'), ISAPNP_DEVICE(0x0209) },
- /* Archtek America Corp. */
- /* Archtek SmartLink Modem 3334BT Plug & Play */
- { ISAPNP_VENDOR('G', 'V', 'C'), ISAPNP_DEVICE(0x000F) },
- /* Hayes */
- /* Hayes Optima 288 V.34-V.FC + FAX + Voice Plug & Play */
- { ISAPNP_VENDOR('H', 'A', 'Y'), ISAPNP_DEVICE(0x0001) },
- /* Hayes Optima 336 V.34 + FAX + Voice PnP */
- { ISAPNP_VENDOR('H', 'A', 'Y'), ISAPNP_DEVICE(0x000C) },
- /* Hayes Optima 336B V.34 + FAX + Voice PnP */
- { ISAPNP_VENDOR('H', 'A', 'Y'), ISAPNP_DEVICE(0x000D) },
- /* Hayes Accura 56K Ext Fax Modem PnP */
- { ISAPNP_VENDOR('H', 'A', 'Y'), ISAPNP_DEVICE(0x5670) },
- /* Hayes Accura 56K Ext Fax Modem PnP */
- { ISAPNP_VENDOR('H', 'A', 'Y'), ISAPNP_DEVICE(0x5674) },
- /* Hayes Accura 56K Fax Modem PnP */
- { ISAPNP_VENDOR('H', 'A', 'Y'), ISAPNP_DEVICE(0x5675) },
- /* Hayes 288, V.34 + FAX */
- { ISAPNP_VENDOR('H', 'A', 'Y'), ISAPNP_DEVICE(0xF000) },
- /* Hayes Optima 288 V.34 + FAX + Voice, Plug & Play */
- { ISAPNP_VENDOR('H', 'A', 'Y'), ISAPNP_DEVICE(0xF001) },
- /* IBM */
- /* IBM Thinkpad 701 Internal Modem Voice */
- { ISAPNP_VENDOR('I', 'B', 'M'), ISAPNP_DEVICE(0x0033) },
- /* Intertex */
- /* Intertex 28k8 33k6 Voice EXT PnP */
- { ISAPNP_VENDOR('I', 'X', 'D'), ISAPNP_DEVICE(0xC801) },
- /* Intertex 33k6 56k Voice EXT PnP */
- { ISAPNP_VENDOR('I', 'X', 'D'), ISAPNP_DEVICE(0xC901) },
- /* Intertex 28k8 33k6 Voice SP EXT PnP */
- { ISAPNP_VENDOR('I', 'X', 'D'), ISAPNP_DEVICE(0xD801) },
- /* Intertex 33k6 56k Voice SP EXT PnP */
- { ISAPNP_VENDOR('I', 'X', 'D'), ISAPNP_DEVICE(0xD901) },
- /* Intertex 28k8 33k6 Voice SP INT PnP */
- { ISAPNP_VENDOR('I', 'X', 'D'), ISAPNP_DEVICE(0xF401) },
- /* Intertex 28k8 33k6 Voice SP EXT PnP */
- { ISAPNP_VENDOR('I', 'X', 'D'), ISAPNP_DEVICE(0xF801) },
- /* Intertex 33k6 56k Voice SP EXT PnP */
- { ISAPNP_VENDOR('I', 'X', 'D'), ISAPNP_DEVICE(0xF901) },
- /* Kortex International */
- /* KORTEX 28800 Externe PnP */
- { ISAPNP_VENDOR('K', 'O', 'R'), ISAPNP_DEVICE(0x4522) },
- /* KXPro 33.6 Vocal ASVD PnP */
- { ISAPNP_VENDOR('K', 'O', 'R'), ISAPNP_DEVICE(0xF661) },
- /* Lasat */
- /* LASAT Internet 33600 PnP */
- { ISAPNP_VENDOR('L', 'A', 'S'), ISAPNP_DEVICE(0x4040) },
- /* Lasat Safire 560 PnP */
- { ISAPNP_VENDOR('L', 'A', 'S'), ISAPNP_DEVICE(0x4540) },
- /* Lasat Safire 336 PnP */
- { ISAPNP_VENDOR('L', 'A', 'S'), ISAPNP_DEVICE(0x5440) },
- /* Microcom, Inc. */
- /* Microcom TravelPorte FAST V.34 Plug & Play */
- { ISAPNP_VENDOR('M', 'N', 'P'), ISAPNP_DEVICE(0x281) },
- /* Microcom DeskPorte V.34 FAST or FAST+ Plug & Play */
- { ISAPNP_VENDOR('M', 'N', 'P'), ISAPNP_DEVICE(0x0336) },
- /* Microcom DeskPorte FAST EP 28.8 Plug & Play */
- { ISAPNP_VENDOR('M', 'N', 'P'), ISAPNP_DEVICE(0x0339) },
- /* Microcom DeskPorte 28.8P Plug & Play */
- { ISAPNP_VENDOR('M', 'N', 'P'), ISAPNP_DEVICE(0x0342) },
- /* Microcom DeskPorte FAST ES 28.8 Plug & Play */
- { ISAPNP_VENDOR('M', 'N', 'P'), ISAPNP_DEVICE(0x0500) },
- /* Microcom DeskPorte FAST ES 28.8 Plug & Play */
- { ISAPNP_VENDOR('M', 'N', 'P'), ISAPNP_DEVICE(0x0501) },
- /* Microcom DeskPorte 28.8S Internal Plug & Play */
- { ISAPNP_VENDOR('M', 'N', 'P'), ISAPNP_DEVICE(0x0502) },
- /* Motorola */
- /* Motorola BitSURFR Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1105) },
- /* Motorola TA210 Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1111) },
- /* Motorola HMTA 200 (ISDN) Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1114) },
- /* Motorola BitSURFR Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1115) },
- /* Motorola Lifestyle 28.8 Internal */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1190) },
- /* Motorola V.3400 Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1501) },
- /* Motorola Lifestyle 28.8 V.34 Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1502) },
- /* Motorola Power 28.8 V.34 Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1505) },
- /* Motorola ModemSURFR External 28.8 Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1509) },
- /* Motorola Premier 33.6 Desktop Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x150A) },
- /* Motorola VoiceSURFR 56K External PnP */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x150F) },
- /* Motorola ModemSURFR 56K External PnP */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1510) },
- /* Motorola ModemSURFR 56K Internal PnP */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1550) },
- /* Motorola ModemSURFR Internal 28.8 Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1560) },
- /* Motorola Premier 33.6 Internal Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x1580) },
- /* Motorola OnlineSURFR 28.8 Internal Plug & Play */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x15B0) },
- /* Motorola VoiceSURFR 56K Internal PnP */
- { ISAPNP_VENDOR('M', 'O', 'T'), ISAPNP_DEVICE(0x15F0) },
- /* Com 1 */
- /* Deskline K56 Phone System PnP */
- { ISAPNP_VENDOR('M', 'V', 'X'), ISAPNP_DEVICE(0x00A1) },
- /* PC Rider K56 Phone System PnP */
- { ISAPNP_VENDOR('M', 'V', 'X'), ISAPNP_DEVICE(0x00F2) },
- /* Pace 56 Voice Internal Plug & Play Modem */
- { ISAPNP_VENDOR('P', 'M', 'C'), ISAPNP_DEVICE(0x2430) },
- /* Generic */
- /* Generic standard PC COM port */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0x0500) },
- /* Generic 16550A-compatible COM port */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0x0501) },
- /* Compaq 14400 Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC000) },
- /* Compaq 2400/9600 Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC001) },
- /* Dial-Up Networking Serial Cable between 2 PCs */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC031) },
- /* Dial-Up Networking Parallel Cable between 2 PCs */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC032) },
- /* Standard 9600 bps Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC100) },
- /* Standard 14400 bps Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC101) },
- /* Standard 28800 bps Modem*/
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC102) },
- /* Standard Modem*/
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC103) },
- /* Standard 9600 bps Modem*/
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC104) },
- /* Standard 14400 bps Modem*/
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC105) },
- /* Standard 28800 bps Modem*/
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC106) },
- /* Standard Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC107) },
- /* Standard 9600 bps Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC108) },
- /* Standard 14400 bps Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC109) },
- /* Standard 28800 bps Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC10A) },
- /* Standard Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC10B) },
- /* Standard 9600 bps Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC10C) },
- /* Standard 14400 bps Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC10D) },
- /* Standard 28800 bps Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC10E) },
- /* Standard Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0xC10F) },
- /* Standard PCMCIA Card Modem */
- { ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_DEVICE(0x2000) },
- /* Rockwell */
- /* Modular Technology */
- /* Rockwell 33.6 DPF Internal PnP */
- /* Modular Technology 33.6 Internal PnP */
- { ISAPNP_VENDOR('R', 'O', 'K'), ISAPNP_DEVICE(0x0030) },
- /* Kortex International */
- /* KORTEX 14400 Externe PnP */
- { ISAPNP_VENDOR('R', 'O', 'K'), ISAPNP_DEVICE(0x0100) },
- /* Viking Components, Inc */
- /* Viking 28.8 INTERNAL Fax+Data+Voice PnP */
- { ISAPNP_VENDOR('R', 'O', 'K'), ISAPNP_DEVICE(0x4920) },
- /* Rockwell */
- /* British Telecom */
- /* Modular Technology */
- /* Rockwell 33.6 DPF External PnP */
- /* BT Prologue 33.6 External PnP */
- /* Modular Technology 33.6 External PnP */
- { ISAPNP_VENDOR('R', 'S', 'S'), ISAPNP_DEVICE(0x00A0) },
- /* Viking 56K FAX INT */
- { ISAPNP_VENDOR('R', 'S', 'S'), ISAPNP_DEVICE(0x0262) },
- /* SupraExpress 28.8 Data/Fax PnP modem */
- { ISAPNP_VENDOR('S', 'U', 'P'), ISAPNP_DEVICE(0x1310) },
- /* SupraExpress 33.6 Data/Fax PnP modem */
- { ISAPNP_VENDOR('S', 'U', 'P'), ISAPNP_DEVICE(0x1421) },
- /* SupraExpress 33.6 Data/Fax PnP modem */
- { ISAPNP_VENDOR('S', 'U', 'P'), ISAPNP_DEVICE(0x1590) },
- /* SupraExpress 33.6 Data/Fax PnP modem */
- { ISAPNP_VENDOR('S', 'U', 'P'), ISAPNP_DEVICE(0x1760) },
- /* Phoebe Micro */
- /* Phoebe Micro 33.6 Data Fax 1433VQH Plug & Play */
- { ISAPNP_VENDOR('T', 'E', 'X'), ISAPNP_DEVICE(0x0011) },
- /* Archtek America Corp. */
- /* Archtek SmartLink Modem 3334BT Plug & Play */
- { ISAPNP_VENDOR('U', 'A', 'C'), ISAPNP_DEVICE(0x000F) },
- /* 3Com Corp. */
- /* Gateway Telepath IIvi 33.6 */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x0000) },
- /* Sportster Vi 14.4 PnP FAX Voicemail */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x0004) },
- /* U.S. Robotics 33.6K Voice INT PnP */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x0006) },
- /* U.S. Robotics 33.6K Voice EXT PnP */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x0007) },
- /* U.S. Robotics 33.6K Voice INT PnP */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x2002) },
- /* U.S. Robotics 56K Voice INT PnP */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x2070) },
- /* U.S. Robotics 56K Voice EXT PnP */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x2080) },
- /* U.S. Robotics 56K FAX INT */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x3031) },
- /* U.S. Robotics 56K Voice INT PnP */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x3070) },
- /* U.S. Robotics 56K Voice EXT PnP */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x3080) },
- /* U.S. Robotics 56K Voice INT PnP */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x3090) },
- /* U.S. Robotics 56K Message */
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x9100) },
- /* U.S. Robotics 56K FAX EXT PnP*/
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x9160) },
- /* U.S. Robotics 56K FAX INT PnP*/
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x9170) },
- /* U.S. Robotics 56K Voice EXT PnP*/
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x9180) },
- /* U.S. Robotics 56K Voice INT PnP*/
- { ISAPNP_VENDOR('U', 'S', 'R'), ISAPNP_DEVICE(0x9190) },
- { 0, }
-};
-
-static void inline avoid_irq_share(struct pci_dev *dev)
-{
- int i;
- unsigned long map = 0x1FF8;
- struct serial_state *state = rs_table;
- struct isapnp_irq *irq;
- struct isapnp_resources *res = dev->sysdata;
-
- for (i = 0; i < NR_PORTS; i++) {
- if (state->type != PORT_UNKNOWN)
- clear_bit(state->irq, &map);
- state++;
- }
-
- for ( ; res; res = res->alt)
- for(irq = res->irq; irq; irq = irq->next)
- irq->map = map;
-}
-
-static char *modem_names[] __devinitdata = {
- "MODEM", "Modem", "modem", "FAX", "Fax", "fax",
- "56K", "56k", "K56", "33.6", "28.8", "14.4",
- "33,600", "28,800", "14,400", "33.600", "28.800", "14.400",
- "33600", "28800", "14400", "V.90", "V.34", "V.32", 0
-};
-
-static int __devinit check_name(char *name)
-{
- char **tmp = modem_names;
-
- while (*tmp) {
- if (strstr(name, *tmp))
- return 1;
- tmp++;
- }
- return 0;
-}
-
-static int inline check_compatible_id(struct pci_dev *dev)
-{
- int i;
- for (i = 0; i < DEVICE_COUNT_COMPATIBLE; i++)
- if ((dev->vendor_compatible[i] ==
- ISAPNP_VENDOR('P', 'N', 'P')) &&
- (swab16(dev->device_compatible[i]) >= 0xc000) &&
- (swab16(dev->device_compatible[i]) <= 0xdfff))
- return 0;
- return 1;
-}
-
-/*
- * Given a complete unknown ISA PnP device, try to use some heuristics to
- * detect modems. Currently use such heuristic set:
- * - dev->name or dev->bus->name must contain "modem" substring;
- * - device must have only one IO region (8 byte long) with base adress
- * 0x2e8, 0x3e8, 0x2f8 or 0x3f8.
- *
- * Such detection looks very ugly, but can detect at least some of numerous
- * ISA PnP modems, alternatively we must hardcode all modems in pnp_devices[]
- * table.
- */
-static int _INLINE_ serial_pnp_guess_board(struct pci_dev *dev,
- struct pci_board *board)
-{
- struct isapnp_resources *res = (struct isapnp_resources *)dev->sysdata;
- struct isapnp_resources *resa;
-
- if (!(check_name(dev->name) || check_name(dev->bus->name)) &&
- !(check_compatible_id(dev)))
- return 1;
-
- if (!res || res->next)
- return 1;
-
- for (resa = res->alt; resa; resa = resa->alt) {
- struct isapnp_port *port;
- for (port = res->port; port; port = port->next)
- if ((port->size == 8) &&
- ((port->min == 0x2f8) ||
- (port->min == 0x3f8) ||
- (port->min == 0x2e8) ||
- (port->min == 0x3e8)))
- return 0;
- }
-
- return 1;
-}
-
-static void __devinit probe_serial_pnp(void)
-{
- struct pci_dev *dev = NULL;
- struct pnp_board *pnp_board;
- struct pci_board board;
-
-#ifdef SERIAL_DEBUG_PNP
- printk("Entered probe_serial_pnp()\n");
-#endif
- if (!isapnp_present()) {
-#ifdef SERIAL_DEBUG_PNP
- printk("Leaving probe_serial_pnp() (no isapnp)\n");
-#endif
- return;
- }
-
- isapnp_for_each_dev(dev) {
- if (dev->active)
- continue;
-
- memset(&board, 0, sizeof(board));
- board.flags = SPCI_FL_BASE0 | SPCI_FL_PNPDEFAULT;
- board.num_ports = 1;
- board.base_baud = 115200;
-
- for (pnp_board = pnp_devices; pnp_board->vendor; pnp_board++)
- if ((dev->vendor == pnp_board->vendor) &&
- (dev->device == pnp_board->device))
- break;
-
- if (pnp_board->vendor) {
- /* Special case that's more efficient to hardcode */
- if ((pnp_board->vendor == ISAPNP_VENDOR('A', 'K', 'Y') &&
- pnp_board->device == ISAPNP_DEVICE(0x1021)))
- board.flags |= SPCI_FL_NO_SHIRQ;
- } else {
- if (serial_pnp_guess_board(dev, &board))
- continue;
- }
-
- if (board.flags & SPCI_FL_NO_SHIRQ)
- avoid_irq_share(dev);
- start_pci_pnp_board(dev, &board);
- }
-
-#ifdef SERIAL_DEBUG_PNP
- printk("Leaving probe_serial_pnp() (probe finished)\n");
-#endif
- return;
-}
-
-#endif /* ENABLE_SERIAL_PNP */
-
-/*
- * The serial driver boot-time initialization code!
- */
-static int __init rs_init(void)
-{
- int i;
- struct serial_state * state;
-
- init_bh(SERIAL_BH, do_serial_bh);
- init_timer(&serial_timer);
- serial_timer.function = rs_timer;
- mod_timer(&serial_timer, jiffies + RS_STROBE_TIME);
-
- for (i = 0; i < NR_IRQS; i++) {
- IRQ_ports[i] = 0;
- IRQ_timeout[i] = 0;
-#ifdef CONFIG_SERIAL_MULTIPORT
- memset(&rs_multiport[i], 0,
- sizeof(struct rs_multiport_struct));
-#endif
- }
-#ifdef CONFIG_SERIAL_CONSOLE
- /*
- * The interrupt of the serial console port
- * can't be shared.
- */
- if (sercons.flags & CON_CONSDEV) {
- for(i = 0; i < NR_PORTS; i++)
- if (i != sercons.index &&
- rs_table[i].irq == rs_table[sercons.index].irq)
- rs_table[i].irq = 0;
- }
-#endif
- show_serial_version();
-
- /* Initialize the tty_driver structure */
-
- memset(&serial_driver, 0, sizeof(struct tty_driver));
- serial_driver.magic = TTY_DRIVER_MAGIC;
-#if (LINUX_VERSION_CODE > 0x20100)
- serial_driver.driver_name = "serial";
-#endif
-#if (LINUX_VERSION_CODE > 0x2032D && defined(CONFIG_DEVFS_FS))
- serial_driver.name = "tts/%d";
-#else
- serial_driver.name = "ttyS";
-#endif
- serial_driver.major = TTY_MAJOR;
- serial_driver.minor_start = 64 + SERIAL_DEV_OFFSET;
- serial_driver.num = NR_PORTS;
- serial_driver.type = TTY_DRIVER_TYPE_SERIAL;
- serial_driver.subtype = SERIAL_TYPE_NORMAL;
- serial_driver.init_termios = tty_std_termios;
- serial_driver.init_termios.c_cflag =
- B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- serial_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
- serial_driver.refcount = &serial_refcount;
- serial_driver.table = serial_table;
- serial_driver.termios = serial_termios;
- serial_driver.termios_locked = serial_termios_locked;
-
- serial_driver.open = rs_open;
- serial_driver.close = rs_close;
- serial_driver.write = rs_write;
- serial_driver.put_char = rs_put_char;
- serial_driver.flush_chars = rs_flush_chars;
- serial_driver.write_room = rs_write_room;
- serial_driver.chars_in_buffer = rs_chars_in_buffer;
- serial_driver.flush_buffer = rs_flush_buffer;
- serial_driver.ioctl = rs_ioctl;
- serial_driver.throttle = rs_throttle;
- serial_driver.unthrottle = rs_unthrottle;
- serial_driver.set_termios = rs_set_termios;
- serial_driver.stop = rs_stop;
- serial_driver.start = rs_start;
- serial_driver.hangup = rs_hangup;
-#if (LINUX_VERSION_CODE >= 131394) /* Linux 2.1.66 */
- serial_driver.break_ctl = rs_break;
-#endif
-#if (LINUX_VERSION_CODE >= 131343)
- serial_driver.send_xchar = rs_send_xchar;
- serial_driver.wait_until_sent = rs_wait_until_sent;
- serial_driver.read_proc = rs_read_proc;
-#endif
-
- /*
- * The callout device is just like normal device except for
- * major number and the subtype code.
- */
- callout_driver = serial_driver;
-#if (LINUX_VERSION_CODE > 0x2032D && defined(CONFIG_DEVFS_FS))
- callout_driver.name = "cua/%d";
-#else
- callout_driver.name = "cua";
-#endif
- callout_driver.major = TTYAUX_MAJOR;
- callout_driver.subtype = SERIAL_TYPE_CALLOUT;
-#if (LINUX_VERSION_CODE >= 131343)
- callout_driver.read_proc = 0;
- callout_driver.proc_entry = 0;
-#endif
-
- if (tty_register_driver(&serial_driver))
- panic("Couldn't register serial driver\n");
- if (tty_register_driver(&callout_driver))
- panic("Couldn't register callout driver\n");
-
- for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
- state->magic = SSTATE_MAGIC;
- state->line = i;
- state->type = PORT_UNKNOWN;
- state->custom_divisor = 0;
- state->close_delay = 5*HZ/10;
- state->closing_wait = 30*HZ;
- state->callout_termios = callout_driver.init_termios;
- state->normal_termios = serial_driver.init_termios;
- state->icount.cts = state->icount.dsr =
- state->icount.rng = state->icount.dcd = 0;
- state->icount.rx = state->icount.tx = 0;
- state->icount.frame = state->icount.parity = 0;
- state->icount.overrun = state->icount.brk = 0;
- state->irq = irq_cannonicalize(state->irq);
- if (state->hub6)
- state->io_type = SERIAL_IO_HUB6;
- if (state->port && check_region(state->port,8))
- continue;
-#ifdef CONFIG_MCA
- if ((state->flags & ASYNC_BOOT_ONLYMCA) && !MCA_bus)
- continue;
-#endif
- if (state->flags & ASYNC_BOOT_AUTOCONF)
- autoconfig(state);
- }
- for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
- if (state->type == PORT_UNKNOWN)
- continue;
- if ( (state->flags & ASYNC_BOOT_AUTOCONF)
- && (state->flags & ASYNC_AUTO_IRQ)
- && (state->port != 0 || state->iomem_base != 0))
- state->irq = detect_uart_irq(state);
- if (state->io_type == SERIAL_IO_MEM) {
- printk(KERN_INFO"ttyS%02d%s at 0x%px (irq = %d) is a %s\n",
- state->line + SERIAL_DEV_OFFSET,
- (state->flags & ASYNC_FOURPORT) ? " FourPort" : "",
- state->iomem_base, state->irq,
- uart_config[state->type].name);
- }
- else {
- printk(KERN_INFO "ttyS%02d%s at 0x%04lx (irq = %d) is a %s\n",
- state->line + SERIAL_DEV_OFFSET,
- (state->flags & ASYNC_FOURPORT) ? " FourPort" : "",
- state->port, state->irq,
- uart_config[state->type].name);
- }
- tty_register_devfs(&serial_driver, 0,
- serial_driver.minor_start + state->line);
- tty_register_devfs(&callout_driver, 0,
- callout_driver.minor_start + state->line);
- }
-#ifdef ENABLE_SERIAL_PCI
- probe_serial_pci();
-#endif
-#ifdef ENABLE_SERIAL_PNP
- probe_serial_pnp();
-#endif
- return 0;
-}
-
-/*
- * This is for use by architectures that know their serial console
- * attributes only at run time. Not to be invoked after rs_init().
- */
-int __init early_serial_setup(struct serial_struct *req)
-{
- int i = req->line;
-
- if (i >= NR_IRQS)
- return(-ENOENT);
- rs_table[i].magic = 0;
- rs_table[i].baud_base = req->baud_base;
- rs_table[i].port = req->port;
- if (HIGH_BITS_OFFSET)
- rs_table[i].port += (unsigned long) req->port_high <<
- HIGH_BITS_OFFSET;
- rs_table[i].irq = req->irq;
- rs_table[i].flags = req->flags;
- rs_table[i].close_delay = req->close_delay;
- rs_table[i].io_type = req->io_type;
- rs_table[i].hub6 = req->hub6;
- rs_table[i].iomem_base = req->iomem_base;
- rs_table[i].iomem_reg_shift = req->iomem_reg_shift;
- rs_table[i].type = req->type;
- rs_table[i].xmit_fifo_size = req->xmit_fifo_size;
- rs_table[i].custom_divisor = req->custom_divisor;
- rs_table[i].closing_wait = req->closing_wait;
- return(0);
-}
-
-/*
- * register_serial and unregister_serial allows for 16x50 serial ports to be
- * configured at run-time, to support PCMCIA modems.
- */
-
-/**
- * register_serial - configure a 16x50 serial port at runtime
- * @req: request structure
- *
- * Configure the serial port specified by the request. If the
- * port exists and is in use an error is returned. If the port
- * is not currently in the table it is added.
- *
- * The port is then probed and if neccessary the IRQ is autodetected
- * If this fails an error is returned.
- *
- * On success the port is ready to use and the line number is returned.
- */
-
-int register_serial(struct serial_struct *req)
-{
- int i;
- unsigned long flags;
- struct serial_state *state;
- struct async_struct *info;
- unsigned long port;
-
- port = req->port;
- if (HIGH_BITS_OFFSET)
- port += (unsigned long) req->port_high << HIGH_BITS_OFFSET;
-
- save_flags(flags); cli();
- for (i = 0; i < NR_PORTS; i++) {
- if ((rs_table[i].port == port) &&
- (rs_table[i].iomem_base == req->iomem_base))
- break;
- }
-#ifdef __i386__
- if (i == NR_PORTS) {
- for (i = 4; i < NR_PORTS; i++)
- if ((rs_table[i].type == PORT_UNKNOWN) &&
- (rs_table[i].count == 0))
- break;
- }
-#endif
- if (i == NR_PORTS) {
- for (i = 0; i < NR_PORTS; i++)
- if ((rs_table[i].type == PORT_UNKNOWN) &&
- (rs_table[i].count == 0))
- break;
- }
- if (i == NR_PORTS) {
- restore_flags(flags);
- return -1;
- }
- state = &rs_table[i];
- if (rs_table[i].count) {
- restore_flags(flags);
- printk("Couldn't configure serial #%d (port=%ld,irq=%d): "
- "device already open\n", i, port, req->irq);
- return -1;
- }
- state->irq = req->irq;
- state->port = port;
- state->flags = req->flags;
- state->io_type = req->io_type;
- state->iomem_base = req->iomem_base;
- state->iomem_reg_shift = req->iomem_reg_shift;
- if (req->baud_base)
- state->baud_base = req->baud_base;
- if ((info = state->info) != NULL) {
- info->port = port;
- info->flags = req->flags;
- info->io_type = req->io_type;
- info->iomem_base = req->iomem_base;
- info->iomem_reg_shift = req->iomem_reg_shift;
- }
- autoconfig(state);
- if (state->type == PORT_UNKNOWN) {
- restore_flags(flags);
- printk("register_serial(): autoconfig failed\n");
- return -1;
- }
- restore_flags(flags);
-
- if ((state->flags & ASYNC_AUTO_IRQ) && CONFIGURED_SERIAL_PORT(state))
- state->irq = detect_uart_irq(state);
-
- printk(KERN_INFO "ttyS%02d at %s 0x%04lx (irq = %d) is a %s\n",
- state->line + SERIAL_DEV_OFFSET,
- state->iomem_base ? "iomem" : "port",
- state->iomem_base ? (unsigned long)state->iomem_base :
- state->port, state->irq, uart_config[state->type].name);
- tty_register_devfs(&serial_driver, 0,
- serial_driver.minor_start + state->line);
- tty_register_devfs(&callout_driver, 0,
- callout_driver.minor_start + state->line);
- return state->line + SERIAL_DEV_OFFSET;
-}
-
-/**
- * unregister_serial - deconfigure a 16x50 serial port
- * @line: line to deconfigure
- *
- * The port specified is deconfigured and its resources are freed. Any
- * user of the port is disconnected as if carrier was dropped. Line is
- * the port number returned by register_serial().
- */
-
-void unregister_serial(int line)
-{
- unsigned long flags;
- struct serial_state *state = &rs_table[line];
-
- save_flags(flags); cli();
- if (state->info && state->info->tty)
- tty_hangup(state->info->tty);
- state->type = PORT_UNKNOWN;
- printk(KERN_INFO "ttyS%02d unloaded\n", state->line);
- /* These will be hidden, because they are devices that will no longer
- * be available to the system. (ie, PCMCIA modems, once ejected)
- */
- tty_unregister_devfs(&serial_driver,
- serial_driver.minor_start + state->line);
- tty_unregister_devfs(&callout_driver,
- callout_driver.minor_start + state->line);
- restore_flags(flags);
-}
-
-static void __exit rs_fini(void)
-{
- unsigned long flags;
- int e1, e2;
- int i;
- struct async_struct *info;
-
- /* printk("Unloading %s: version %s\n", serial_name, serial_version); */
- del_timer_sync(&serial_timer);
- save_flags(flags); cli();
- remove_bh(SERIAL_BH);
- if ((e1 = tty_unregister_driver(&serial_driver)))
- printk("serial: failed to unregister serial driver (%d)\n",
- e1);
- if ((e2 = tty_unregister_driver(&callout_driver)))
- printk("serial: failed to unregister callout driver (%d)\n",
- e2);
- restore_flags(flags);
-
- for (i = 0; i < NR_PORTS; i++) {
- if ((info = rs_table[i].info)) {
- rs_table[i].info = NULL;
- kfree(info);
- }
- if ((rs_table[i].type != PORT_UNKNOWN) && rs_table[i].port) {
-#ifdef CONFIG_SERIAL_RSA
- if (rs_table[i].type == PORT_RSA)
- release_region(rs_table[i].port +
- UART_RSA_BASE, 16);
- else
-#endif
- release_region(rs_table[i].port, 8);
- }
-#if defined(ENABLE_SERIAL_PCI) || defined(ENABLE_SERIAL_PNP)
- if (rs_table[i].iomem_base)
- iounmap(rs_table[i].iomem_base);
-#endif
- }
-#if defined(ENABLE_SERIAL_PCI) || defined(ENABLE_SERIAL_PNP)
- for (i=0; i < NR_PCI_BOARDS; i++) {
- struct pci_board_inst *brd = &serial_pci_board[i];
-
- if (serial_pci_board[i].dev == 0)
- continue;
- if (brd->board.init_fn)
- (brd->board.init_fn)(brd->dev, &brd->board, 0);
- if (DEACTIVATE_FUNC(brd->dev))
- (DEACTIVATE_FUNC(brd->dev))(brd->dev);
- }
-#endif
- if (tmp_buf) {
- unsigned long pg = (unsigned long) tmp_buf;
- tmp_buf = NULL;
- free_page(pg);
- }
-
-#ifdef ENABLE_SERIAL_PCI
- if (serial_pci_driver.name[0])
- pci_unregister_driver (&serial_pci_driver);
-#endif
-}
-
-module_init(rs_init);
-module_exit(rs_fini);
-MODULE_DESCRIPTION("Standard/generic (dumb) serial driver");
-MODULE_AUTHOR("Theodore Ts'o <tytso@mit.edu>");
-MODULE_LICENSE("GPL");
-
-
-/*
- * ------------------------------------------------------------
- * Serial console driver
- * ------------------------------------------------------------
- */
-#ifdef CONFIG_SERIAL_CONSOLE
-
-#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
-
-static struct async_struct async_sercons;
-
-/*
- * Wait for transmitter & holding register to empty
- */
-static inline void wait_for_xmitr(struct async_struct *info)
-{
- unsigned int status, tmout = 1000000;
-
- do {
- status = serial_in(info, UART_LSR);
-
- if (status & UART_LSR_BI)
- lsr_break_flag = UART_LSR_BI;
-
- if (--tmout == 0)
- break;
- } while((status & BOTH_EMPTY) != BOTH_EMPTY);
-
- /* Wait for flow control if necessary */
- if (info->flags & ASYNC_CONS_FLOW) {
- tmout = 1000000;
- while (--tmout &&
- ((serial_in(info, UART_MSR) & UART_MSR_CTS) == 0));
- }
-}
-
-
-/*
- * Print a string to the serial port trying not to disturb
- * any possible real use of the port...
- *
- * The console must be locked when we get here.
- */
-static void serial_console_write(struct console *co, const char *s,
- unsigned count)
-{
- static struct async_struct *info = &async_sercons;
- int ier;
- unsigned i;
-
- /*
- * First save the IER then disable the interrupts
- */
- ier = serial_in(info, UART_IER);
- serial_out(info, UART_IER, 0x00);
-
- /*
- * Now, do each character
- */
- for (i = 0; i < count; i++, s++) {
- wait_for_xmitr(info);
-
- /*
- * Send the character out.
- * If a LF, also do CR...
- */
- serial_out(info, UART_TX, *s);
- if (*s == 10) {
- wait_for_xmitr(info);
- serial_out(info, UART_TX, 13);
- }
- }
-
- /*
- * Finally, Wait for transmitter & holding register to empty
- * and restore the IER
- */
- wait_for_xmitr(info);
- serial_out(info, UART_IER, ier);
-}
-
-static kdev_t serial_console_device(struct console *c)
-{
- return mk_kdev(TTY_MAJOR, 64 + c->index);
-}
-
-/*
- * Setup initial baud/bits/parity/flow control. We do two things here:
- * - construct a cflag setting for the first rs_open()
- * - initialize the serial port
- * Return non-zero if we didn't find a serial port.
- */
-static int __init serial_console_setup(struct console *co, char *options)
-{
- static struct async_struct *info;
- struct serial_state *state;
- unsigned cval;
- int baud = 9600;
- int bits = 8;
- int parity = 'n';
- int doflow = 0;
- int cflag = CREAD | HUPCL | CLOCAL;
- int quot = 0;
- char *s;
-
- if (options) {
- baud = simple_strtoul(options, NULL, 10);
- s = options;
- while(*s >= '0' && *s <= '9')
- s++;
- if (*s) parity = *s++;
- if (*s) bits = *s++ - '0';
- if (*s) doflow = (*s++ == 'r');
- }
-
- /*
- * Now construct a cflag setting.
- */
- switch(baud) {
- case 1200:
- cflag |= B1200;
- break;
- case 2400:
- cflag |= B2400;
- break;
- case 4800:
- cflag |= B4800;
- break;
- case 19200:
- cflag |= B19200;
- break;
- case 38400:
- cflag |= B38400;
- break;
- case 57600:
- cflag |= B57600;
- break;
- case 115200:
- cflag |= B115200;
- break;
- case 9600:
- default:
- cflag |= B9600;
- /*
- * Set this to a sane value to prevent a divide error
- */
- baud = 9600;
- break;
- }
- switch(bits) {
- case 7:
- cflag |= CS7;
- break;
- default:
- case 8:
- cflag |= CS8;
- break;
- }
- switch(parity) {
- case 'o': case 'O':
- cflag |= PARODD;
- break;
- case 'e': case 'E':
- cflag |= PARENB;
- break;
- }
- co->cflag = cflag;
-
- /*
- * Divisor, bytesize and parity
- */
- state = rs_table + co->index;
- if (doflow)
- state->flags |= ASYNC_CONS_FLOW;
- info = &async_sercons;
- info->magic = SERIAL_MAGIC;
- info->state = state;
- info->port = state->port;
- info->flags = state->flags;
-#ifdef CONFIG_HUB6
- info->hub6 = state->hub6;
-#endif
- info->io_type = state->io_type;
- info->iomem_base = state->iomem_base;
- info->iomem_reg_shift = state->iomem_reg_shift;
- quot = state->baud_base / baud;
- cval = cflag & (CSIZE | CSTOPB);
-#if defined(__powerpc__) || defined(__alpha__)
- cval >>= 8;
-#else /* !__powerpc__ && !__alpha__ */
- cval >>= 4;
-#endif /* !__powerpc__ && !__alpha__ */
- if (cflag & PARENB)
- cval |= UART_LCR_PARITY;
- if (!(cflag & PARODD))
- cval |= UART_LCR_EPAR;
-
- /*
- * Disable UART interrupts, set DTR and RTS high
- * and set speed.
- */
- serial_out(info, UART_LCR, cval | UART_LCR_DLAB); /* set DLAB */
- serial_out(info, UART_DLL, quot & 0xff); /* LS of divisor */
- serial_out(info, UART_DLM, quot >> 8); /* MS of divisor */
- serial_out(info, UART_LCR, cval); /* reset DLAB */
- serial_out(info, UART_IER, 0);
- serial_out(info, UART_MCR, UART_MCR_DTR | UART_MCR_RTS);
-
- /*
- * If we read 0xff from the LSR, there is no UART here.
- */
- if (serial_in(info, UART_LSR) == 0xff)
- return -1;
-
- return 0;
-}
-
-static struct console sercons = {
- name: "ttyS",
- write: serial_console_write,
- device: serial_console_device,
- setup: serial_console_setup,
- flags: CON_PRINTBUFFER,
- index: -1,
-};
-
-/*
- * Register console.
- */
-void __init serial_console_init(void)
-{
- register_console(&sercons);
-}
-#endif
-
-/*
- Local variables:
- compile-command: "gcc -D__KERNEL__ -I../../include -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strict-aliasing -pipe -fno-strength-reduce -march=i586 -DMODULE -DMODVERSIONS -include ../../include/linux/modversions.h -DEXPORT_SYMTAB -c serial.c"
- End:
-*/
extern void tty3215_init(void);
extern void tub3270_con_init(void);
extern void tub3270_init(void);
-extern void rs285_console_init(void);
-extern void sa1100_rs_console_init(void);
+extern void uart_console_init(void);
extern void sgi_serial_console_init(void);
extern void sci_console_init(void);
extern void tx3912_console_init(void);
#ifdef CONFIG_STDIO_CONSOLE
stdio_console_init();
#endif
-#ifdef CONFIG_SERIAL_21285_CONSOLE
- rs285_console_init();
-#endif
-#ifdef CONFIG_SERIAL_SA1100_CONSOLE
- sa1100_rs_console_init();
+#ifdef CONFIG_SERIAL_CORE_CONSOLE
+ uart_console_init();
#endif
#ifdef CONFIG_ARC_CONSOLE
arc_console_init();
#endif
-#ifdef CONFIG_SERIAL_AMBA_CONSOLE
- ambauart_console_init();
-#endif
#ifdef CONFIG_SERIAL_TX3912_CONSOLE
tx3912_console_init();
#endif
--- /dev/null
+# $Id: Config.help,v 1.5 2002/07/06 17:16:24 rmk Exp $
+
+CONFIG_SERIAL_8250
+ This selects whether you want to include the driver for the standard
+ serial ports. The standard answer is Y. People who might say N
+ here are those that are setting up dedicated Ethernet WWW/FTP
+ servers, or users that have one of the various bus mice instead of a
+ serial mouse and don't intend to use their machine's standard serial
+ port for anything. (Note that the Cyclades and Stallion multi
+ serial port drivers do not need this driver built in for them to
+ work.)
+
+ If you want to compile this driver as a module, say M here and read
+ <file:Documentation/modules.txt>. The module will be called
+ serial.o.
+ [WARNING: Do not compile this driver as a module if you are using
+ non-standard serial ports, since the configuration information will
+ be lost when the driver is unloaded. This limitation may be lifted
+ in the future.]
+
+ BTW1: If you have a mouseman serial mouse which is not recognized by
+ the X window system, try running gpm first.
+
+ BTW2: If you intend to use a software modem (also called Winmodem)
+ under Linux, forget it. These modems are crippled and require
+ proprietary drivers which are only available under Windows.
+
+ Most people will say Y or M here, so that they can use serial mice,
+ modems and similar devices connecting to the standard serial ports.
+
+CONFIG_SERIAL_8250_CONSOLE
+ If you say Y here, it will be possible to use a serial port as the
+ system console (the system console is the device which receives all
+ kernel messages and warnings and which allows logins in single user
+ mode). This could be useful if some terminal or printer is connected
+ to that serial port.
+
+ Even if you say Y here, the currently visible virtual console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttyS1". (Try "man bootparam" or see the documentation of
+ your boot loader (lilo or loadlin) about how to pass options to the
+ kernel at boot time.)
+
+ If you don't have a VGA card installed and you say Y here, the
+ kernel will automatically use the first serial line, /dev/ttyS0, as
+ system console.
+
+ If unsure, say N.
+
+CONFIG_SERIAL_8250_CS
+ Say Y here to enable support for 16-bit PCMCIA serial devices,
+ including serial port cards, modems, and the modem functions of
+ multi-function Ethernet/modem cards. (PCMCIA- or PC-cards are
+ credit-card size devices often used with laptops.)
+
+ This driver is also available as a module ( = code which can be
+ inserted in and removed from the running kernel whenever you want).
+ The module will be called serial_cs.o. If you want to compile it as
+ a module, say M here and read <file:Documentation/modules.txt>.
+ If unsure, say N.
+
+CONFIG_SERIAL_8250_EXTENDED
+ If you wish to use any non-standard features of the standard "dumb"
+ driver, say Y here. This includes HUB6 support, shared serial
+ interrupts, special multiport support, support for more than the
+ four COM 1/2/3/4 boards, etc.
+
+ Note that the answer to this question won't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about serial driver options. If unsure, say N.
+
+CONFIG_SERIAL_8250_MANY_PORTS
+ Say Y here if you have dumb serial boards other than the four
+ standard COM 1/2/3/4 ports. This may happen if you have an AST
+ FourPort, Accent Async, Boca (read the Boca mini-HOWTO, available
+ from <http://www.linuxdoc.org/docs.html#howto>), or other custom
+ serial port hardware which acts similar to standard serial port
+ hardware. If you only use the standard COM 1/2/3/4 ports, you can
+ say N here to save some memory. You can also say Y if you have an
+ "intelligent" multiport card such as Cyclades, Digiboards, etc.
+
+CONFIG_SERIAL_8250_SHARE_IRQ
+ Some serial boards have hardware support which allows multiple dumb
+ serial ports on the same board to share a single IRQ. To enable
+ support for this in the serial driver, say Y here.
+
+CONFIG_SERIAL_8250_DETECT_IRQ
+ Say Y here if you want the kernel to try to guess which IRQ
+ to use for your serial port.
+
+ This is considered unsafe; it is far better to configure the IRQ in
+ a boot script using the setserial command.
+
+ If unsure, say N.
+
+CONFIG_SERIAL_8250_MULTIPORT
+ Some multiport serial ports have special ports which are used to
+ signal when there are any serial ports on the board which need
+ servicing. Say Y here to enable the serial driver to take advantage
+ of those special I/O ports.
+
+CONFIG_SERIAL_8250_RSA
+ ::: To be written :::
+
+CONFIG_ATOMWIDE_SERIAL
+ If you have an Atomwide Serial card for an Acorn system, say Y to
+ this option. The driver can handle 1, 2, or 3 port cards.
+ If unsure, say N.
+
+CONFIG_DUALSP_SERIAL
+ If you have the Serial Port's dual serial card for an Acorn system,
+ say Y to this option. If unsure, say N.
+
+CONFIG_SERIAL_ANAKIN
+ ::: To be written :::
+CONFIG_SERIAL_ANAKIN_CONSOLE
+ ::: To be written :::
+
+ Even if you say Y here, the currently visible virtual console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttyAN0". (Try "man bootparam" or see the documentation of
+ your boot loader (lilo or loadlin) about how to pass options to the
+ kernel at boot time.)
+
+CONFIG_ANAKIN_DEFAULT_BAUDRATE
+ ::: To be written :::
+
+CONFIG_SERIAL_AMBA
+ This selects the ARM(R) AMBA(R) PrimeCell UART. If you have an
+ Integrator platform, say Y or M here.
+
+ If unsure, say N.
+
+CONFIG_SERIAL_AMBA_CONSOLE
+ Say Y here if you wish to use an AMBA PrimeCell UART as the system
+ console (the system console is the device which receives all kernel
+ messages and warnings and which allows logins in single user mode).
+
+ Even if you say Y here, the currently visible framebuffer console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttyAM0". (Try "man bootparam" or see the documentation of
+ your boot loader (lilo or loadlin) about how to pass options to the
+ kernel at boot time.)
+
+CONFIG_SERIAL_CLPS711X
+ ::: To be written :::
+
+CONFIG_SERIAL_CLPS711X_CONSOLE
+ ::: To be written :::
+
+ Even if you say Y here, the currently visible virtual console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttyCL1". (Try "man bootparam" or see the documentation of
+ your boot loader (lilo or loadlin) about how to pass options to the
+ kernel at boot time.)
+
+CONFIG_SERIAL_CLPS711X_OLD_NAME
+ ::: To be written :::
+
+CONFIG_SERIAL_21285
+ If you have a machine based on a 21285 (Footbridge) StrongARM(R)/
+ PCI bridge you can enable its onboard serial port by enabling this
+ option.
+
+CONFIG_SERIAL_21285_OLD
+ Use the old /dev/ttyS name, major 4 minor 64. This is obsolete
+ and will be removed during later 2.5 development.
+
+CONFIG_SERIAL_21285_CONSOLE
+ If you have enabled the serial port on the 21285 footbridge you can
+ make it the console by answering Y to this option.
+
+ Even if you say Y here, the currently visible virtual console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttyFB". (Try "man bootparam" or see the documentation of
+ your boot loader (lilo or loadlin) about how to pass options to the
+ kernel at boot time.)
+
+CONFIG_SERIAL_UART00
+ Say Y here if you want to use the hard logic uart on Excalibur. This
+ driver also supports soft logic implentations of this uart core.
+
+CONFIG_SERIAL_UART00_CONSOLE
+ Say Y here if you want to support a serial console on an Excalibur
+ hard logic uart or uart00 IP core.
+
+ Even if you say Y here, the currently visible virtual console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttyS1". (Try "man bootparam" or see the documentation of
+ your boot loader (lilo or loadlin) about how to pass options to the
+ kernel at boot time.)
+
+CONFIG_SERIAL_SA1100
+ If you have a machine based on a SA1100/SA1110 StrongARM(R) CPU you
+ can enable its onboard serial port by enabling this option.
+ Please read <file:Documentation/arm/SA1100/serial_UART> for further
+ info.
+
+CONFIG_SERIAL_SA1100_CONSOLE
+ If you have enabled the serial port on the SA1100/SA1110 StrongARM
+ CPU you can make it the console by answering Y to this option.
+
+ Even if you say Y here, the currently visible virtual console
+ (/dev/tty0) will still be used as the system console by default, but
+ you can alter that using a kernel command line option such as
+ "console=ttySA0". (Try "man bootparam" or see the documentation of
+ your boot loader (lilo or loadlin) about how to pass options to the
+ kernel at boot time.)
+
+#CONFIG_SERIAL_L7200
+# If you have a LinkUp Systems L7200 board you can enable its two
+# onboard serial ports by enabling this option. The device numbers
+# are major ID 4 with minor 64 and 65 respectively.
+#
+#CONFIG_SERIAL_L7200_CONSOLE
+# If you have enabled the serial ports on the L7200 development board
+# you can make the first serial port the console by answering Y to
+# this option.
+
--- /dev/null
+#
+# Serial device configuration
+#
+# $Id: Config.in,v 1.15 2002/07/06 17:16:24 rmk Exp $
+#
+mainmenu_option next_comment
+comment 'Serial drivers'
+
+#
+# The new 8250/16550 serial drivers
+dep_tristate '8250/16550 and compatible serial support (EXPERIMENTAL)' CONFIG_SERIAL_8250 $CONFIG_EXPERIMENTAL
+dep_bool ' Console on 8250/16550 and compatible serial port (EXPERIMENTAL)' CONFIG_SERIAL_8250_CONSOLE $CONFIG_SERIAL_8250 $CONFIG_EXPERIMENTAL
+dep_tristate ' 8250/16550 PCMCIA device support' CONFIG_SERIAL_8250_CS $CONFIG_PCMCIA $CONFIG_SERIAL_8250
+
+dep_mbool 'Extended 8250/16550 serial driver options' CONFIG_SERIAL_8250_EXTENDED $CONFIG_SERIAL_8250
+dep_bool ' Support more than 4 serial ports' CONFIG_SERIAL_8250_MANY_PORTS $CONFIG_SERIAL_8250_EXTENDED
+dep_bool ' Support for sharing serial interrupts' CONFIG_SERIAL_8250_SHARE_IRQ $CONFIG_SERIAL_8250_EXTENDED
+dep_bool ' Autodetect IRQ on standard ports (unsafe)' CONFIG_SERIAL_8250_DETECT_IRQ $CONFIG_SERIAL_8250_EXTENDED
+dep_bool ' Support special multiport boards' CONFIG_SERIAL_8250_MULTIPORT $CONFIG_SERIAL_8250_EXTENDED
+dep_bool ' Support RSA serial ports' CONFIG_SERIAL_8250_RSA $CONFIG_SERIAL_8250_EXTENDED
+
+comment 'Non-8250 serial port support'
+
+if [ "$CONFIG_ARM" = "y" ]; then
+ dep_tristate 'Acorn Atomwide 16550 serial port support' CONFIG_ATOMWIDE_SERIAL $CONFIG_ARCH_ACORN $CONFIG_SERIAL_8250
+ dep_tristate 'Acorn Dual 16550 serial port support' CONFIG_DUALSP_SERIAL $CONFIG_ARCH_ACORN $CONFIG_SERIAL_8250
+ dep_bool 'Anakin serial port support' CONFIG_SERIAL_ANAKIN $CONFIG_ARCH_ANAKIN
+ dep_bool ' Console on Anakin serial port' CONFIG_SERIAL_ANAKIN_CONSOLE $CONFIG_SERIAL_ANAKIN
+ if [ "$CONFIG_SERIAL_ANAKIN" = "y" ]; then
+ int ' Default Anakin serial baudrate' CONFIG_ANAKIN_DEFAULT_BAUDRATE 9600
+ fi
+
+ dep_tristate 'ARM AMBA serial port support' CONFIG_SERIAL_AMBA $CONFIG_ARCH_INTEGRATOR
+ dep_bool ' Support for console on AMBA serial port' CONFIG_SERIAL_AMBA_CONSOLE $CONFIG_SERIAL_AMBA
+ if [ "$CONFIG_SERIAL_AMBA" = "y" ]; then
+ define_bool CONFIG_SERIAL_INTEGRATOR y
+ fi
+
+ dep_tristate 'CLPS711X serial port support' CONFIG_SERIAL_CLPS711X $CONFIG_ARCH_CLPS711X
+ dep_bool ' Support for console on CLPS711X serial port' CONFIG_SERIAL_CLPS711X_CONSOLE $CONFIG_SERIAL_CLPS711X
+ dep_bool ' Use the old 2.4 names for CLPS711X serial port' CONFIG_SERIAL_CLPS711X_OLD_NAME $CONFIG_SERIAL_CLPS711X
+
+ dep_tristate 'DC21285 serial port support' CONFIG_SERIAL_21285 $CONFIG_FOOTBRIDGE
+ dep_bool ' Use /dev/ttyS0 device (OBSOLETE)' CONFIG_SERIAL_21285_OLD $CONFIG_SERIAL_21285 $CONFIG_OBSOLETE
+ dep_bool ' Console on DC21285 serial port' CONFIG_SERIAL_21285_CONSOLE $CONFIG_SERIAL_21285
+
+ dep_bool 'Excalibur serial port (uart00) support' CONFIG_SERIAL_UART00 $CONFIG_ARCH_CAMELOT
+ dep_bool ' Support for console on Excalibur serial port' CONFIG_SERIAL_UART00_CONSOLE $CONFIG_SERIAL_UART00
+
+ dep_bool 'SA1100 serial port support' CONFIG_SERIAL_SA1100 $CONFIG_ARCH_SA1100
+ dep_bool ' Console on SA1100 serial port' CONFIG_SERIAL_SA1100_CONSOLE $CONFIG_SERIAL_SA1100
+fi
+
+if [ "$CONFIG_SERIAL_AMBA" = "y" -o "$CONFIG_SERIAL_CLPS711X" = "y" -o \
+ "$CONFIG_SERIAL_21285" = "y" -o "$CONFIG_SERIAL_SA1100" = "y" -o \
+ "$CONFIG_SERIAL_ANAKIN" = "y" -o "$CONFIG_SERIAL_UART00" = "y" -o \
+ "$CONFIG_SERIAL_8250" = "y" -o "$CONFIG_SERIAL_ROCKETPORT" = "y" ]; then
+ define_bool CONFIG_SERIAL_CORE y
+else
+ if [ "$CONFIG_SERIAL_AMBA" = "m" -o "$CONFIG_SERIAL_CLPS711X" = "m" -o \
+ "$CONFIG_SERIAL_21285" = "m" -o "$CONFIG_SERIAL_SA1100" = "m" -o \
+ "$CONFIG_SERIAL_ANAKIN" = "m" -o "$CONFIG_SERIAL_UART00" = "m" -o \
+ "$CONFIG_SERIAL_8250" = "m" -o "$CONFIG_SERIAL_ROCKETPORT" = "m" ]; then
+ define_bool CONFIG_SERIAL_CORE m
+ fi
+fi
+if [ "$CONFIG_SERIAL_AMBA_CONSOLE" = "y" -o \
+ "$CONFIG_SERIAL_CLPS711X_CONSOLE" = "y" -o \
+ "$CONFIG_SERIAL_21285_CONSOLE" = "y" -o \
+ "$CONFIG_SERIAL_SA1100_CONSOLE" = "y" -o \
+ "$CONFIG_SERIAL_ANAKIN_CONSOLE" = "y" -o \
+ "$CONFIG_SERIAL_UART00_CONSOLE" = "y" -o \
+ "$CONFIG_SERIAL_8250_CONSOLE" = "y" ]; then
+ define_bool CONFIG_SERIAL_CORE_CONSOLE y
+fi
+
+endmenu
--- /dev/null
+#
+# Makefile for the kernel serial device drivers.
+#
+# $Id: Makefile,v 1.7 2002/07/06 17:16:24 rmk Exp $
+#
+
+export-objs := serial_core.o serial_8250.o
+
+serial-8250-y :=
+serial-8250-$(CONFIG_PCI) += serial_8250_pci.o
+serial-8250-$(CONFIG_ISAPNP) += serial_8250_pnp.o
+obj-$(CONFIG_SERIAL_CORE) += serial_core.o
+obj-$(CONFIG_SERIAL_21285) += serial_21285.o
+obj-$(CONFIG_SERIAL_8250) += serial_8250.o $(serial-8250-y)
+obj-$(CONFIG_SERIAL_8250_CS) += serial_8250_cs.o
+obj-$(CONFIG_SERIAL_ANAKIN) += serial_anakin.o
+obj-$(CONFIG_SERIAL_AMBA) += serial_amba.o
+obj-$(CONFIG_SERIAL_CLPS711X) += serial_clps711x.o
+obj-$(CONFIG_SERIAL_SA1100) += serial_sa1100.o
+obj-$(CONFIG_SERIAL_UART00) += serial_uart00.o
+
+include $(TOPDIR)/Rules.make
--- /dev/null
+/*
+ * linux/drivers/char/serial_21285.c
+ *
+ * Driver for the serial port on the 21285 StrongArm-110 core logic chip.
+ *
+ * Based on drivers/char/serial.c
+ *
+ * $Id: serial_21285.c,v 1.32 2002/07/21 08:57:55 rmk Exp $
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial.h>
+#include <linux/major.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/serial_core.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/hardware/dec21285.h>
+#include <asm/hardware.h>
+
+#define BAUD_BASE (mem_fclk_21285/64)
+
+#define SERIAL_21285_NAME "ttyFB"
+#define SERIAL_21285_MAJOR 204
+#define SERIAL_21285_MINOR 4
+
+#define RXSTAT_DUMMY_READ 0x80000000
+#define RXSTAT_FRAME (1 << 0)
+#define RXSTAT_PARITY (1 << 1)
+#define RXSTAT_OVERRUN (1 << 2)
+#define RXSTAT_ANYERR (RXSTAT_FRAME|RXSTAT_PARITY|RXSTAT_OVERRUN)
+
+#define H_UBRLCR_BREAK (1 << 0)
+#define H_UBRLCR_PARENB (1 << 1)
+#define H_UBRLCR_PAREVN (1 << 2)
+#define H_UBRLCR_STOPB (1 << 3)
+#define H_UBRLCR_FIFO (1 << 4)
+
+static const char serial21285_name[] = "Footbridge UART";
+
+#define tx_enabled(port) ((port)->unused[0])
+#define rx_enabled(port) ((port)->unused[1])
+
+/*
+ * The documented expression for selecting the divisor is:
+ * BAUD_BASE / baud - 1
+ * However, typically BAUD_BASE is not divisible by baud, so
+ * we want to select the divisor that gives us the minimum
+ * error. Therefore, we want:
+ * int(BAUD_BASE / baud - 0.5) ->
+ * int(BAUD_BASE / baud - (baud >> 1) / baud) ->
+ * int((BAUD_BASE - (baud >> 1)) / baud)
+ */
+
+static void __serial21285_stop_tx(struct uart_port *port)
+{
+ if (tx_enabled(port)) {
+ disable_irq(IRQ_CONTX);
+ tx_enabled(port) = 0;
+ }
+}
+
+static void
+serial21285_stop_tx(struct uart_port *port, unsigned int tty_stop)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ __serial21285_stop_tx(port);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void
+serial21285_start_tx(struct uart_port *port, unsigned int tty_start)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ if (!tx_enabled(port)) {
+ enable_irq(IRQ_CONTX);
+ tx_enabled(port) = 1;
+ }
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void serial21285_stop_rx(struct uart_port *port)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ if (rx_enabled(port)) {
+ disable_irq(IRQ_CONRX);
+ rx_enabled(port) = 0;
+ }
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void serial21285_enable_ms(struct uart_port *port)
+{
+}
+
+static void serial21285_rx_chars(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uart_port *port = dev_id;
+ struct tty_struct *tty = port->info->tty;
+ unsigned int status, ch, rxs, max_count = 256;
+
+ status = *CSR_UARTFLG;
+ while (!(status & 0x10) && max_count--) {
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ tty->flip.tqueue.routine((void *)tty);
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ printk(KERN_WARNING "TTY_DONT_FLIP set\n");
+ return;
+ }
+ }
+
+ ch = *CSR_UARTDR;
+
+ *tty->flip.char_buf_ptr = ch;
+ *tty->flip.flag_buf_ptr = TTY_NORMAL;
+ port->icount.rx++;
+
+ rxs = *CSR_RXSTAT | RXSTAT_DUMMY_READ;
+ if (rxs & RXSTAT_ANYERR) {
+ if (rxs & RXSTAT_PARITY)
+ port->icount.parity++;
+ else if (rxs & RXSTAT_FRAME)
+ port->icount.frame++;
+ if (rxs & RXSTAT_OVERRUN)
+ port->icount.overrun++;
+
+ rxs &= port->read_status_mask;
+
+ if (rxs & RXSTAT_PARITY)
+ *tty->flip.flag_buf_ptr = TTY_PARITY;
+ else if (rxs & RXSTAT_FRAME)
+ *tty->flip.flag_buf_ptr = TTY_FRAME;
+ }
+
+ if ((rxs & port->ignore_status_mask) == 0) {
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ tty->flip.count++;
+ }
+ if ((rxs & RXSTAT_OVERRUN) &&
+ tty->flip.count < TTY_FLIPBUF_SIZE) {
+ /*
+ * Overrun is special, since it's reported
+ * immediately, and doesn't affect the current
+ * character.
+ */
+ *tty->flip.char_buf_ptr++ = 0;
+ *tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
+ tty->flip.count++;
+ }
+ status = *CSR_UARTFLG;
+ }
+ tty_flip_buffer_push(tty);
+}
+
+static void serial21285_tx_chars(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uart_port *port = dev_id;
+ struct circ_buf *xmit = &port->info->xmit;
+ int count = 256;
+
+ if (port->x_char) {
+ *CSR_UARTDR = port->x_char;
+ port->icount.tx++;
+ port->x_char = 0;
+ return;
+ }
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ __serial21285_stop_tx(port);
+ return;
+ }
+
+ do {
+ *CSR_UARTDR = xmit->buf[xmit->tail];
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
+ } while (--count > 0 && !(*CSR_UARTFLG & 0x20));
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_event(port, EVT_WRITE_WAKEUP);
+
+ if (uart_circ_empty(xmit))
+ __serial21285_stop_tx(port);
+}
+
+static unsigned int serial21285_tx_empty(struct uart_port *port)
+{
+ return (*CSR_UARTFLG & 8) ? 0 : TIOCSER_TEMT;
+}
+
+/* no modem control lines */
+static unsigned int serial21285_get_mctrl(struct uart_port *port)
+{
+ return TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
+}
+
+static void serial21285_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+}
+
+static void serial21285_break_ctl(struct uart_port *port, int break_state)
+{
+ unsigned long flags;
+ unsigned int h_lcr;
+
+ spin_lock_irqsave(&port->lock, flags);
+ h_lcr = *CSR_H_UBRLCR;
+ if (break_state)
+ h_lcr |= H_UBRLCR_BREAK;
+ else
+ h_lcr &= ~H_UBRLCR_BREAK;
+ *CSR_H_UBRLCR = h_lcr;
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static int serial21285_startup(struct uart_port *port)
+{
+ int ret;
+
+ tx_enabled(port) = 1;
+ rx_enabled(port) = 1;
+
+ ret = request_irq(IRQ_CONRX, serial21285_rx_chars, 0,
+ serial21285_name, port);
+ if (ret == 0) {
+ ret = request_irq(IRQ_CONTX, serial21285_tx_chars, 0,
+ serial21285_name, port);
+ if (ret)
+ free_irq(IRQ_CONRX, port);
+ }
+
+ return ret;
+}
+
+static void serial21285_shutdown(struct uart_port *port)
+{
+ free_irq(IRQ_CONTX, port);
+ free_irq(IRQ_CONRX, port);
+}
+
+static void
+serial21285_change_speed(struct uart_port *port, unsigned int cflag,
+ unsigned int iflag, unsigned int quot)
+{
+ unsigned int h_lcr;
+
+ switch (cflag & CSIZE) {
+ case CS5:
+ h_lcr = 0x00;
+ break;
+ case CS6:
+ h_lcr = 0x20;
+ break;
+ case CS7:
+ h_lcr = 0x40;
+ break;
+ default: /* CS8 */
+ h_lcr = 0x60;
+ break;
+ }
+
+ if (cflag & CSTOPB)
+ h_lcr |= H_UBRLCR_STOPB;
+ if (cflag & PARENB) {
+ h_lcr |= H_UBRLCR_PARENB;
+ if (!(cflag & PARODD))
+ h_lcr |= H_UBRLCR_PAREVN;
+ }
+
+ if (port->fifosize)
+ h_lcr |= H_UBRLCR_FIFO;
+
+ port->read_status_mask = RXSTAT_OVERRUN;
+ if (iflag & INPCK)
+ port->read_status_mask |= RXSTAT_FRAME | RXSTAT_PARITY;
+
+ /*
+ * Characters to ignore
+ */
+ port->ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= RXSTAT_FRAME | RXSTAT_PARITY;
+ if (iflag & IGNBRK && iflag & IGNPAR)
+ port->ignore_status_mask |= RXSTAT_OVERRUN;
+
+ /*
+ * Ignore all characters if CREAD is not set.
+ */
+ if ((cflag & CREAD) == 0)
+ port->ignore_status_mask |= RXSTAT_DUMMY_READ;
+
+ quot -= 1;
+
+ *CSR_UARTCON = 0;
+ *CSR_L_UBRLCR = quot & 0xff;
+ *CSR_M_UBRLCR = (quot >> 8) & 0x0f;
+ *CSR_H_UBRLCR = h_lcr;
+ *CSR_UARTCON = 1;
+}
+
+static const char *serial21285_type(struct uart_port *port)
+{
+ return port->type == PORT_21285 ? "DC21285" : NULL;
+}
+
+static void serial21285_release_port(struct uart_port *port)
+{
+ release_mem_region(port->mapbase, 32);
+}
+
+static int serial21285_request_port(struct uart_port *port)
+{
+ return request_mem_region(port->mapbase, 32, serial21285_name)
+ != NULL ? 0 : -EBUSY;
+}
+
+static void serial21285_config_port(struct uart_port *port, int flags)
+{
+ if (flags & UART_CONFIG_TYPE && serial21285_request_port(port) == 0)
+ port->type = PORT_21285;
+}
+
+/*
+ * verify the new serial_struct (for TIOCSSERIAL).
+ */
+static int serial21285_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ int ret = 0;
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_21285)
+ ret = -EINVAL;
+ if (ser->irq != NO_IRQ)
+ ret = -EINVAL;
+ if (ser->baud_base != port->uartclk / 16)
+ ret = -EINVAL;
+ return ret;
+}
+
+static struct uart_ops serial21285_ops = {
+ tx_empty: serial21285_tx_empty,
+ get_mctrl: serial21285_get_mctrl,
+ set_mctrl: serial21285_set_mctrl,
+ stop_tx: serial21285_stop_tx,
+ start_tx: serial21285_start_tx,
+ stop_rx: serial21285_stop_rx,
+ enable_ms: serial21285_enable_ms,
+ break_ctl: serial21285_break_ctl,
+ startup: serial21285_startup,
+ shutdown: serial21285_shutdown,
+ change_speed: serial21285_change_speed,
+ type: serial21285_type,
+ release_port: serial21285_release_port,
+ request_port: serial21285_request_port,
+ config_port: serial21285_config_port,
+ verify_port: serial21285_verify_port,
+};
+
+static struct uart_port serial21285_port = {
+ membase: 0,
+ mapbase: 0x42000160,
+ iotype: SERIAL_IO_MEM,
+ irq: NO_IRQ,
+ uartclk: 0,
+ fifosize: 16,
+ ops: &serial21285_ops,
+ flags: ASYNC_BOOT_AUTOCONF,
+};
+
+static void serial21285_setup_ports(void)
+{
+ serial21285_port.uartclk = mem_fclk_21285 / 4;
+}
+
+#ifdef CONFIG_SERIAL_21285_CONSOLE
+
+static void
+serial21285_console_write(struct console *co, const char *s,
+ unsigned int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++) {
+ while (*CSR_UARTFLG & 0x20)
+ barrier();
+ *CSR_UARTDR = s[i];
+ if (s[i] == '\n') {
+ while (*CSR_UARTFLG & 0x20)
+ barrier();
+ *CSR_UARTDR = '\r';
+ }
+ }
+}
+
+static kdev_t serial21285_console_device(struct console *c)
+{
+ return mk_kdev(SERIAL_21285_MAJOR, SERIAL_21285_MINOR);
+}
+
+static void __init
+serial21285_get_options(struct uart_port *port, int *baud,
+ int *parity, int *bits)
+{
+ if (*CSR_UARTCON == 1) {
+ unsigned int tmp;
+
+ tmp = *CSR_H_UBRLCR;
+ switch (tmp & 0x60) {
+ case 0x00:
+ *bits = 5;
+ break;
+ case 0x20:
+ *bits = 6;
+ break;
+ case 0x40:
+ *bits = 7;
+ break;
+ default:
+ case 0x60:
+ *bits = 8;
+ break;
+ }
+
+ if (tmp & H_UBRLCR_PARENB) {
+ *parity = 'o';
+ if (tmp & H_UBRLCR_PAREVN)
+ *parity = 'e';
+ }
+
+ tmp = *CSR_L_UBRLCR | (*CSR_M_UBRLCR << 8);
+
+ *baud = port->uartclk / (16 * (tmp + 1));
+ }
+}
+
+static int __init serial21285_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port = &serial21285_port;
+ int baud = 9600;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ if (machine_is_personal_server())
+ baud = 57600;
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ serial21285_get_options(port, &baud, &parity, &bits);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+#ifdef CONFIG_SERIAL_21285_OLD
+static struct console serial21285_old_cons =
+{
+ name: SERIAL_21285_OLD_NAME,
+ write: serial21285_console_write,
+ device: serial21285_console_device,
+ setup: serial21285_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+};
+#endif
+
+static struct console serial21285_console =
+{
+ name: SERIAL_21285_NAME,
+ write: serial21285_console_write,
+ device: serial21285_console_device,
+ setup: serial21285_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+};
+
+void __init rs285_console_init(void)
+{
+ serial21285_setup_ports();
+ register_console(&serial21285_console);
+}
+
+#define SERIAL_21285_CONSOLE &serial21285_console
+#else
+#define SERIAL_21285_CONSOLE NULL
+#endif
+
+static struct uart_driver serial21285_reg = {
+ owner: THIS_MODULE,
+ driver_name: "ttyFB",
+#ifdef CONFIG_DEVFS_FS
+ dev_name: "ttyFB%d",
+#else
+ dev_name: "ttyFB",
+#endif
+ major: SERIAL_21285_MAJOR,
+ minor: SERIAL_21285_MINOR,
+ nr: 1,
+ cons: SERIAL_21285_CONSOLE,
+};
+
+static int __init serial21285_init(void)
+{
+ int ret;
+
+ printk(KERN_INFO "Serial: 21285 driver $Revision: 1.32 $\n");
+
+ serial21285_setup_ports();
+
+ ret = uart_register_driver(&serial21285_reg);
+ if (ret == 0)
+ uart_add_one_port(&serial21285_reg, &serial21285_port);
+
+ return ret;
+}
+
+static void __exit serial21285_exit(void)
+{
+ uart_remove_one_port(&serial21285_reg, &serial21285_port);
+ uart_unregister_driver(&serial21285_reg);
+}
+
+module_init(serial21285_init);
+module_exit(serial21285_exit);
+
+EXPORT_NO_SYMBOLS;
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Intel Footbridge (21285) serial driver $Revision: 1.32 $");
--- /dev/null
+/*
+ * linux/drivers/char/serial_8250.c
+ *
+ * Driver for 8250/16550-type serial ports
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * Copyright (C) 2001 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * $Id: serial_8250.c,v 1.80 2002/07/21 08:57:55 rmk Exp $
+ *
+ * A note about mapbase / membase
+ *
+ * mapbase is the physical address of the IO port. Currently, we don't
+ * support this very well, and it may well be dropped from this driver
+ * in future. As such, mapbase should be NULL.
+ *
+ * membase is an 'ioremapped' cookie. This is compatible with the old
+ * serial.c driver, and is currently the preferred form.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/compiler.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/slab.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/serial_reg.h>
+#include <linux/serialP.h>
+#include <linux/delay.h>
+#include <linux/kmod.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+
+#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/serial_core.h>
+#include "serial_8250.h"
+
+/*
+ * Configuration:
+ * share_irqs - whether we pass SA_SHIRQ to request_irq(). This option
+ * is unsafe when used on edge-triggered interrupts.
+ */
+unsigned int share_irqs = SERIAL8250_SHARE_IRQS;
+
+/*
+ * Debugging.
+ */
+#if 0
+#define DEBUG_AUTOCONF(fmt...) printk(fmt)
+#else
+#define DEBUG_AUTOCONF(fmt...) do { } while (0)
+#endif
+
+#if 0
+#define DEBUG_INTR(fmt...) printk(fmt)
+#else
+#define DEBUG_INTR(fmt...) do { } while (0)
+#endif
+
+#define PASS_LIMIT 256
+
+/*
+ * We default to IRQ0 for the "no irq" hack. Some
+ * machine types want others as well - they're free
+ * to redefine this in their header file.
+ */
+#define is_real_interrupt(irq) ((irq) != 0)
+
+/*
+ * This converts from our new CONFIG_ symbols to the symbols
+ * that asm/serial.h expects. You _NEED_ to comment out the
+ * linux/config.h include contained inside asm/serial.h for
+ * this to work.
+ */
+#undef CONFIG_SERIAL_MANY_PORTS
+#undef CONFIG_SERIAL_DETECT_IRQ
+#undef CONFIG_SERIAL_MULTIPORT
+#undef CONFIG_HUB6
+
+#ifdef CONFIG_SERIAL_8250_DETECT_IRQ
+#define CONFIG_SERIAL_DETECT_IRQ 1
+#endif
+#ifdef CONFIG_SERIAL_8250_MULTIPORT
+#define CONFIG_SERIAL_MULTIPORT 1
+#endif
+
+/*
+ * HUB6 is always on. This will be removed once the header
+ * files have been cleaned.
+ */
+#define CONFIG_HUB6 1
+#define CONFIG_SERIAL_MANY_PORTS 1
+
+#include <asm/serial.h>
+
+static struct old_serial_port old_serial_port[] = {
+ SERIAL_PORT_DFNS /* defined in asm/serial.h */
+};
+
+#define UART_NR ARRAY_SIZE(old_serial_port)
+
+#if defined(CONFIG_SERIAL_8250_RSA) && defined(MODULE)
+
+#define PORT_RSA_MAX 4
+static int probe_rsa[PORT_RSA_MAX];
+static int force_rsa[PORT_RSA_MAX];
+#endif /* CONFIG_SERIAL_8250_RSA */
+
+struct uart_8250_port {
+ struct uart_port port;
+ struct timer_list timer; /* "no irq" timer */
+ struct list_head list; /* ports on this IRQ */
+ unsigned char acr;
+ unsigned char ier;
+ unsigned char rev;
+ unsigned char lcr;
+ unsigned int lsr_break_flag;
+
+ /*
+ * We provide a per-port pm hook.
+ */
+ void (*pm)(struct uart_port *port,
+ unsigned int state, unsigned int old);
+};
+
+struct irq_info {
+ spinlock_t lock;
+ struct list_head *head;
+};
+
+static struct irq_info irq_lists[NR_IRQS];
+
+/*
+ * Here we define the default xmit fifo size used for each type of UART.
+ */
+static const struct serial_uart_config uart_config[PORT_MAX_8250+1] = {
+ { "unknown", 1, 0 },
+ { "8250", 1, 0 },
+ { "16450", 1, 0 },
+ { "16550", 1, 0 },
+ { "16550A", 16, UART_CLEAR_FIFO | UART_USE_FIFO },
+ { "Cirrus", 1, 0 },
+ { "ST16650", 1, UART_CLEAR_FIFO | UART_STARTECH },
+ { "ST16650V2", 32, UART_CLEAR_FIFO | UART_USE_FIFO | UART_STARTECH },
+ { "TI16750", 64, UART_CLEAR_FIFO | UART_USE_FIFO },
+ { "Startech", 1, 0 },
+ { "16C950/954", 128, UART_CLEAR_FIFO | UART_USE_FIFO },
+ { "ST16654", 64, UART_CLEAR_FIFO | UART_USE_FIFO | UART_STARTECH },
+ { "XR16850", 128, UART_CLEAR_FIFO | UART_USE_FIFO | UART_STARTECH },
+ { "RSA", 2048, UART_CLEAR_FIFO | UART_USE_FIFO }
+};
+
+static _INLINE_ unsigned int serial_in(struct uart_8250_port *up, int offset)
+{
+ offset <<= up->port.regshift;
+
+ switch (up->port.iotype) {
+ case SERIAL_IO_HUB6:
+ outb(up->port.hub6 - 1 + offset, up->port.iobase);
+ return inb(up->port.iobase + 1);
+
+ case SERIAL_IO_MEM:
+ return readb(up->port.membase + offset);
+
+ default:
+ return inb(up->port.iobase + offset);
+ }
+}
+
+static _INLINE_ void
+serial_out(struct uart_8250_port *up, int offset, int value)
+{
+ offset <<= up->port.regshift;
+
+ switch (up->port.iotype) {
+ case SERIAL_IO_HUB6:
+ outb(up->port.hub6 - 1 + offset, up->port.iobase);
+ outb(value, up->port.iobase + 1);
+ break;
+
+ case SERIAL_IO_MEM:
+ writeb(value, up->port.membase + offset);
+ break;
+
+ default:
+ outb(value, up->port.iobase + offset);
+ }
+}
+
+/*
+ * We used to support using pause I/O for certain machines. We
+ * haven't supported this for a while, but just in case it's badly
+ * needed for certain old 386 machines, I've left these #define's
+ * in....
+ */
+#define serial_inp(up, offset) serial_in(up, offset)
+#define serial_outp(up, offset, value) serial_out(up, offset, value)
+
+
+/*
+ * For the 16C950
+ */
+static void serial_icr_write(struct uart_8250_port *up, int offset, int value)
+{
+ serial_out(up, UART_SCR, offset);
+ serial_out(up, UART_ICR, value);
+}
+
+static unsigned int serial_icr_read(struct uart_8250_port *up, int offset)
+{
+ unsigned int value;
+
+ serial_icr_write(up, UART_ACR, up->acr | UART_ACR_ICRRD);
+ serial_out(up, UART_SCR, offset);
+ value = serial_in(up, UART_ICR);
+ serial_icr_write(up, UART_ACR, up->acr);
+
+ return value;
+}
+
+#ifdef CONFIG_SERIAL_8250_RSA
+/*
+ * Attempts to turn on the RSA FIFO. Returns zero on failure.
+ * We set the port uart clock rate if we succeed.
+ */
+static int __enable_rsa(struct uart_8250_port *up)
+{
+ unsigned char mode;
+ int result;
+
+ mode = serial_inp(up, UART_RSA_MSR);
+ result = mode & UART_RSA_MSR_FIFO;
+
+ if (!result) {
+ serial_outp(up, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO);
+ mode = serial_inp(up, UART_RSA_MSR);
+ result = mode & UART_RSA_MSR_FIFO;
+ }
+
+ if (result)
+ up->port.uartclk = SERIAL_RSA_BAUD_BASE * 16;
+
+ return result;
+}
+
+static void enable_rsa(struct uart_8250_port *up)
+{
+ if (up->port.type == PORT_RSA) {
+ if (up->port.uartclk != SERIAL_RSA_BAUD_BASE * 16) {
+ spin_lock_irq(&up->port.lock);
+ __enable_rsa(up);
+ spin_unlock_irq(&up->port.lock);
+ }
+ if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16)
+ serial_outp(up, UART_RSA_FRR, 0);
+ }
+}
+
+/*
+ * Attempts to turn off the RSA FIFO. Returns zero on failure.
+ * It is unknown why interrupts were disabled in here. However,
+ * the caller is expected to preserve this behaviour by grabbing
+ * the spinlock before calling this function.
+ */
+static void disable_rsa(struct uart_8250_port *up)
+{
+ unsigned char mode;
+ int result;
+
+ if (up->port.type == PORT_RSA &&
+ up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) {
+ spin_lock_irq(&up->port.lock);
+
+ mode = serial_inp(up, UART_RSA_MSR);
+ result = !(mode & UART_RSA_MSR_FIFO);
+
+ if (!result) {
+ serial_outp(up, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO);
+ mode = serial_inp(up, UART_RSA_MSR);
+ result = !(mode & UART_RSA_MSR_FIFO);
+ }
+
+ if (result)
+ up->port.uartclk = SERIAL_RSA_BAUD_BASE_LO * 16;
+ spin_unlock_irq(&up->port.lock);
+ }
+}
+#endif /* CONFIG_SERIAL_8250_RSA */
+
+/*
+ * This is a quickie test to see how big the FIFO is.
+ * It doesn't work at all the time, more's the pity.
+ */
+static int size_fifo(struct uart_8250_port *up)
+{
+ unsigned char old_fcr, old_mcr, old_dll, old_dlm;
+ int count;
+
+ old_fcr = serial_inp(up, UART_FCR);
+ old_mcr = serial_inp(up, UART_MCR);
+ serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
+ UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
+ serial_outp(up, UART_MCR, UART_MCR_LOOP);
+ serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ old_dll = serial_inp(up, UART_DLL);
+ old_dlm = serial_inp(up, UART_DLM);
+ serial_outp(up, UART_DLL, 0x01);
+ serial_outp(up, UART_DLM, 0x00);
+ serial_outp(up, UART_LCR, 0x03);
+ for (count = 0; count < 256; count++)
+ serial_outp(up, UART_TX, count);
+ mdelay(20);/* FIXME - schedule_timeout */
+ for (count = 0; (serial_inp(up, UART_LSR) & UART_LSR_DR) &&
+ (count < 256); count++)
+ serial_inp(up, UART_RX);
+ serial_outp(up, UART_FCR, old_fcr);
+ serial_outp(up, UART_MCR, old_mcr);
+ serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ serial_outp(up, UART_DLL, old_dll);
+ serial_outp(up, UART_DLM, old_dlm);
+
+ return count;
+}
+
+/*
+ * This is a helper routine to autodetect StarTech/Exar/Oxsemi UART's.
+ * When this function is called we know it is at least a StarTech
+ * 16650 V2, but it might be one of several StarTech UARTs, or one of
+ * its clones. (We treat the broken original StarTech 16650 V1 as a
+ * 16550, and why not? Startech doesn't seem to even acknowledge its
+ * existence.)
+ *
+ * What evil have men's minds wrought...
+ */
+static void
+autoconfig_startech_uarts(struct uart_8250_port *up)
+{
+ unsigned char scratch, scratch2, scratch3, scratch4;
+
+ /*
+ * First we check to see if it's an Oxford Semiconductor UART.
+ *
+ * If we have to do this here because some non-National
+ * Semiconductor clone chips lock up if you try writing to the
+ * LSR register (which serial_icr_read does)
+ */
+ if (up->port.type == PORT_16550A) {
+ /*
+ * EFR [4] must be set else this test fails
+ *
+ * This shouldn't be necessary, but Mike Hudson
+ * (Exoray@isys.ca) claims that it's needed for 952
+ * dual UART's (which are not recommended for new designs).
+ */
+ up->acr = 0;
+ serial_out(up, UART_LCR, 0xBF);
+ serial_out(up, UART_EFR, 0x10);
+ serial_out(up, UART_LCR, 0x00);
+ /* Check for Oxford Semiconductor 16C950 */
+ scratch = serial_icr_read(up, UART_ID1);
+ scratch2 = serial_icr_read(up, UART_ID2);
+ scratch3 = serial_icr_read(up, UART_ID3);
+
+ if (scratch == 0x16 && scratch2 == 0xC9 &&
+ (scratch3 == 0x50 || scratch3 == 0x52 ||
+ scratch3 == 0x54)) {
+ up->port.type = PORT_16C950;
+ up->rev = serial_icr_read(up, UART_REV) |
+ (scratch3 << 8);
+ return;
+ }
+ }
+
+ /*
+ * We check for a XR16C850 by setting DLL and DLM to 0, and then
+ * reading back DLL and DLM. The chip type depends on the DLM
+ * value read back:
+ * 0x10 - XR16C850 and the DLL contains the chip revision.
+ * 0x12 - XR16C2850.
+ * 0x14 - XR16C854.
+ */
+
+ /* Save the DLL and DLM */
+
+ serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ scratch3 = serial_inp(up, UART_DLL);
+ scratch4 = serial_inp(up, UART_DLM);
+
+ serial_outp(up, UART_DLL, 0);
+ serial_outp(up, UART_DLM, 0);
+ scratch2 = serial_inp(up, UART_DLL);
+ scratch = serial_inp(up, UART_DLM);
+ serial_outp(up, UART_LCR, 0);
+
+ if (scratch == 0x10 || scratch == 0x12 || scratch == 0x14) {
+ if (scratch == 0x10)
+ up->rev = scratch2;
+ up->port.type = PORT_16850;
+ return;
+ }
+
+ /* Restore the DLL and DLM */
+
+ serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ serial_outp(up, UART_DLL, scratch3);
+ serial_outp(up, UART_DLM, scratch4);
+ serial_outp(up, UART_LCR, 0);
+
+ /*
+ * We distinguish between the '654 and the '650 by counting
+ * how many bytes are in the FIFO. I'm using this for now,
+ * since that's the technique that was sent to me in the
+ * serial driver update, but I'm not convinced this works.
+ * I've had problems doing this in the past. -TYT
+ */
+ if (size_fifo(up) == 64)
+ up->port.type = PORT_16654;
+ else
+ up->port.type = PORT_16650V2;
+}
+
+/*
+ * This routine is called by rs_init() to initialize a specific serial
+ * port. It determines what type of UART chip this serial port is
+ * using: 8250, 16450, 16550, 16550A. The important question is
+ * whether or not this UART is a 16550A or not, since this will
+ * determine whether or not we can use its FIFO features or not.
+ */
+static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
+{
+ unsigned char status1, status2, scratch, scratch2, scratch3;
+ unsigned char save_lcr, save_mcr;
+ unsigned long flags;
+
+ DEBUG_AUTOCONF("Testing ttyS%d (0x%04x, 0x%08lx)...\n",
+ up->port.line, up->port.iobase, up->port.membase);
+
+ if (!up->port.iobase && !up->port.membase)
+ return;
+
+ /*
+ * We really do need global IRQs disabled here - we're going to
+ * be frobbing the chips IRQ enable register to see if it exists.
+ */
+ spin_lock_irqsave(&up->port.lock, flags);
+// save_flags(flags); cli();
+
+ if (!(up->port.flags & ASYNC_BUGGY_UART)) {
+ /*
+ * Do a simple existence test first; if we fail this,
+ * there's no point trying anything else.
+ *
+ * 0x80 is used as a nonsense port to prevent against
+ * false positives due to ISA bus float. The
+ * assumption is that 0x80 is a non-existent port;
+ * which should be safe since include/asm/io.h also
+ * makes this assumption.
+ */
+ scratch = serial_inp(up, UART_IER);
+ serial_outp(up, UART_IER, 0);
+#ifdef __i386__
+ outb(0xff, 0x080);
+#endif
+ scratch2 = serial_inp(up, UART_IER);
+ serial_outp(up, UART_IER, 0x0F);
+#ifdef __i386__
+ outb(0, 0x080);
+#endif
+ scratch3 = serial_inp(up, UART_IER);
+ serial_outp(up, UART_IER, scratch);
+ if (scratch2 != 0 || scratch3 != 0x0F) {
+ /*
+ * We failed; there's nothing here
+ */
+ DEBUG_AUTOCONF("serial: ttyS%d: simple autoconfig "
+ "failed (%02x, %02x)\n",
+ up->port.line, scratch2, scratch3);
+ goto out;
+ }
+ }
+
+ save_mcr = serial_in(up, UART_MCR);
+ save_lcr = serial_in(up, UART_LCR);
+
+ /*
+ * Check to see if a UART is really there. Certain broken
+ * internal modems based on the Rockwell chipset fail this
+ * test, because they apparently don't implement the loopback
+ * test mode. So this test is skipped on the COM 1 through
+ * COM 4 ports. This *should* be safe, since no board
+ * manufacturer would be stupid enough to design a board
+ * that conflicts with COM 1-4 --- we hope!
+ */
+ if (!(up->port.flags & ASYNC_SKIP_TEST)) {
+ serial_outp(up, UART_MCR, UART_MCR_LOOP | 0x0A);
+ status1 = serial_inp(up, UART_MSR) & 0xF0;
+ serial_outp(up, UART_MCR, save_mcr);
+ if (status1 != 0x90) {
+ DEBUG_AUTOCONF("serial: ttyS%d: no UART loopback "
+ "failed\n", up->port.line);
+ goto out;
+ }
+ }
+ serial_outp(up, UART_LCR, 0xBF); /* set up for StarTech test */
+ serial_outp(up, UART_EFR, 0); /* EFR is the same as FCR */
+ serial_outp(up, UART_LCR, 0);
+ serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ scratch = serial_in(up, UART_IIR) >> 6;
+ switch (scratch) {
+ case 0:
+ up->port.type = PORT_16450;
+ break;
+ case 1:
+ up->port.type = PORT_UNKNOWN;
+ break;
+ case 2:
+ up->port.type = PORT_16550;
+ break;
+ case 3:
+ up->port.type = PORT_16550A;
+ break;
+ }
+ if (up->port.type == PORT_16550A) {
+ /* Check for Startech UART's */
+ serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ if (serial_in(up, UART_EFR) == 0) {
+ up->port.type = PORT_16650;
+ } else {
+ serial_outp(up, UART_LCR, 0xBF);
+ if (serial_in(up, UART_EFR) == 0)
+ autoconfig_startech_uarts(up);
+ }
+ }
+ if (up->port.type == PORT_16550A) {
+ /* Check for TI 16750 */
+ serial_outp(up, UART_LCR, save_lcr | UART_LCR_DLAB);
+ serial_outp(up, UART_FCR,
+ UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
+ scratch = serial_in(up, UART_IIR) >> 5;
+ if (scratch == 7) {
+ /*
+ * If this is a 16750, and not a cheap UART
+ * clone, then it should only go into 64 byte
+ * mode if the UART_FCR7_64BYTE bit was set
+ * while UART_LCR_DLAB was latched.
+ */
+ serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_outp(up, UART_LCR, 0);
+ serial_outp(up, UART_FCR,
+ UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
+ scratch = serial_in(up, UART_IIR) >> 5;
+ if (scratch == 6)
+ up->port.type = PORT_16750;
+ }
+ serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ }
+#if defined(CONFIG_SERIAL_8250_RSA) && defined(MODULE)
+ /*
+ * Only probe for RSA ports if we got the region.
+ */
+ if (up->port.type == PORT_16550A && probeflags & PROBE_RSA) {
+ int i;
+
+ for (i = 0 ; i < PORT_RSA_MAX ; ++i) {
+ if (!probe_rsa[i] && !force_rsa[i])
+ break;
+ if (((probe_rsa[i] != up->port.iobase) ||
+ check_region(up->port.iobase + UART_RSA_BASE, 16)) &&
+ (force_rsa[i] != up->port.iobase))
+ continue;
+ if (__enable_rsa(up)) {
+ up->port.type = PORT_RSA;
+ break;
+ }
+ }
+ }
+#endif
+ serial_outp(up, UART_LCR, save_lcr);
+ if (up->port.type == PORT_16450) {
+ scratch = serial_in(up, UART_SCR);
+ serial_outp(up, UART_SCR, 0xa5);
+ status1 = serial_in(up, UART_SCR);
+ serial_outp(up, UART_SCR, 0x5a);
+ status2 = serial_in(up, UART_SCR);
+ serial_outp(up, UART_SCR, scratch);
+
+ if ((status1 != 0xa5) || (status2 != 0x5a))
+ up->port.type = PORT_8250;
+ }
+
+ up->port.fifosize = uart_config[up->port.type].dfl_xmit_fifo_size;
+
+ if (up->port.type == PORT_UNKNOWN)
+ goto out;
+
+ /*
+ * Reset the UART.
+ */
+#ifdef CONFIG_SERIAL_8250_RSA
+ if (up->port.type == PORT_RSA)
+ serial_outp(up, UART_RSA_FRR, 0);
+#endif
+ serial_outp(up, UART_MCR, save_mcr);
+ serial_outp(up, UART_FCR, (UART_FCR_ENABLE_FIFO |
+ UART_FCR_CLEAR_RCVR |
+ UART_FCR_CLEAR_XMIT));
+ serial_outp(up, UART_FCR, 0);
+ (void)serial_in(up, UART_RX);
+ serial_outp(up, UART_IER, 0);
+
+ out:
+ spin_unlock_irqrestore(&up->port.lock, flags);
+// restore_flags(flags);
+#ifdef CONFIG_SERIAL_8250_RSA
+ if (up->port.iobase && up->port.type == PORT_RSA) {
+ release_region(up->port.iobase, 8);
+ request_region(up->port.iobase + UART_RSA_BASE, 16,
+ "serial_rsa");
+ }
+#endif
+}
+
+static void autoconfig_irq(struct uart_8250_port *up)
+{
+ unsigned char save_mcr, save_ier;
+ unsigned char save_ICP = 0;
+ unsigned int ICP = 0;
+ unsigned long irqs;
+ int irq;
+
+ if (up->port.flags & ASYNC_FOURPORT) {
+ ICP = (up->port.iobase & 0xfe0) | 0x1f;
+ save_ICP = inb_p(ICP);
+ outb_p(0x80, ICP);
+ (void) inb_p(ICP);
+ }
+
+ /* forget possible initially masked and pending IRQ */
+ probe_irq_off(probe_irq_on());
+ save_mcr = serial_inp(up, UART_MCR);
+ save_ier = serial_inp(up, UART_IER);
+ serial_outp(up, UART_MCR, UART_MCR_OUT1 | UART_MCR_OUT2);
+
+ irqs = probe_irq_on();
+ serial_outp(up, UART_MCR, 0);
+ udelay (10);
+ if (up->port.flags & ASYNC_FOURPORT) {
+ serial_outp(up, UART_MCR,
+ UART_MCR_DTR | UART_MCR_RTS);
+ } else {
+ serial_outp(up, UART_MCR,
+ UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2);
+ }
+ serial_outp(up, UART_IER, 0x0f); /* enable all intrs */
+ (void)serial_inp(up, UART_LSR);
+ (void)serial_inp(up, UART_RX);
+ (void)serial_inp(up, UART_IIR);
+ (void)serial_inp(up, UART_MSR);
+ serial_outp(up, UART_TX, 0xFF);
+ udelay (20);
+ irq = probe_irq_off(irqs);
+
+ serial_outp(up, UART_MCR, save_mcr);
+ serial_outp(up, UART_IER, save_ier);
+
+ if (up->port.flags & ASYNC_FOURPORT)
+ outb_p(save_ICP, ICP);
+
+ up->port.irq = (irq > 0) ? irq : 0;
+}
+
+static void __serial8250_stop_tx(struct uart_port *port, unsigned int tty_stop)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+
+ if (up->ier & UART_IER_THRI) {
+ up->ier &= ~UART_IER_THRI;
+ serial_out(up, UART_IER, up->ier);
+ }
+ if (up->port.type == PORT_16C950 && tty_stop) {
+ up->acr |= UART_ACR_TXDIS;
+ serial_icr_write(up, UART_ACR, up->acr);
+ }
+}
+
+static void serial8250_stop_tx(struct uart_port *port, unsigned int tty_stop)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned long flags;
+
+ spin_lock_irqsave(&up->port.lock, flags);
+ __serial8250_stop_tx(port, tty_stop);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+static void serial8250_start_tx(struct uart_port *port, unsigned int tty_start)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+
+ if (!(up->ier & UART_IER_THRI)) {
+ up->ier |= UART_IER_THRI;
+ serial_out(up, UART_IER, up->ier);
+ }
+ /*
+ * We only do this from uart_start
+ */
+ if (tty_start && up->port.type == PORT_16C950) {
+ up->acr &= ~UART_ACR_TXDIS;
+ serial_icr_write(up, UART_ACR, up->acr);
+ }
+}
+
+static void serial8250_stop_rx(struct uart_port *port)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned long flags;
+
+ spin_lock_irqsave(&up->port.lock, flags);
+ up->ier &= ~UART_IER_RLSI;
+ up->port.read_status_mask &= ~UART_LSR_DR;
+ serial_out(up, UART_IER, up->ier);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+static void serial8250_enable_ms(struct uart_port *port)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned long flags;
+
+ spin_lock_irqsave(&up->port.lock, flags);
+ up->ier |= UART_IER_MSI;
+ serial_out(up, UART_IER, up->ier);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+static _INLINE_ void
+receive_chars(struct uart_8250_port *up, int *status, struct pt_regs *regs)
+{
+ struct tty_struct *tty = up->port.info->tty;
+ unsigned char ch;
+ int max_count = 256;
+
+ do {
+ if (unlikely(tty->flip.count >= TTY_FLIPBUF_SIZE)) {
+ tty->flip.tqueue.routine((void *)tty);
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ return; // if TTY_DONT_FLIP is set
+ }
+ ch = serial_inp(up, UART_RX);
+ *tty->flip.char_buf_ptr = ch;
+ *tty->flip.flag_buf_ptr = TTY_NORMAL;
+ up->port.icount.rx++;
+
+ if (unlikely(*status & (UART_LSR_BI | UART_LSR_PE |
+ UART_LSR_FE | UART_LSR_OE))) {
+ /*
+ * For statistics only
+ */
+ if (*status & UART_LSR_BI) {
+ *status &= ~(UART_LSR_FE | UART_LSR_PE);
+ up->port.icount.brk++;
+ /*
+ * We do the SysRQ and SAK checking
+ * here because otherwise the break
+ * may get masked by ignore_status_mask
+ * or read_status_mask.
+ */
+ if (uart_handle_break(&up->port))
+ goto ignore_char;
+ } else if (*status & UART_LSR_PE)
+ up->port.icount.parity++;
+ else if (*status & UART_LSR_FE)
+ up->port.icount.frame++;
+ if (*status & UART_LSR_OE)
+ up->port.icount.overrun++;
+
+ /*
+ * Mask off conditions which should be ingored.
+ */
+ *status &= up->port.read_status_mask;
+
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+ if (up->port.line == up->port.cons->index) {
+ /* Recover the break flag from console xmit */
+ *status |= up->lsr_break_flag;
+ up->lsr_break_flag = 0;
+ }
+#endif
+ if (*status & UART_LSR_BI) {
+ DEBUG_INTR("handling break....");
+ *tty->flip.flag_buf_ptr = TTY_BREAK;
+ } else if (*status & UART_LSR_PE)
+ *tty->flip.flag_buf_ptr = TTY_PARITY;
+ else if (*status & UART_LSR_FE)
+ *tty->flip.flag_buf_ptr = TTY_FRAME;
+ }
+ if (uart_handle_sysrq_char(&up->port, ch, regs))
+ goto ignore_char;
+ if ((*status & up->port.ignore_status_mask) == 0) {
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ tty->flip.count++;
+ }
+ if ((*status & UART_LSR_OE) &&
+ tty->flip.count < TTY_FLIPBUF_SIZE) {
+ /*
+ * Overrun is special, since it's reported
+ * immediately, and doesn't affect the current
+ * character.
+ */
+ *tty->flip.flag_buf_ptr = TTY_OVERRUN;
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ tty->flip.count++;
+ }
+ ignore_char:
+ *status = serial_inp(up, UART_LSR);
+ } while ((*status & UART_LSR_DR) && (max_count-- > 0));
+ tty_flip_buffer_push(tty);
+}
+
+static _INLINE_ void transmit_chars(struct uart_8250_port *up)
+{
+ struct circ_buf *xmit = &up->port.info->xmit;
+ int count;
+
+ if (up->port.x_char) {
+ serial_outp(up, UART_TX, up->port.x_char);
+ up->port.icount.tx++;
+ up->port.x_char = 0;
+ return;
+ }
+ if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
+ __serial8250_stop_tx(&up->port, 0);
+ return;
+ }
+
+ count = up->port.fifosize;
+ do {
+ serial_out(up, UART_TX, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ up->port.icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
+ } while (--count > 0);
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_event(&up->port, EVT_WRITE_WAKEUP);
+
+ DEBUG_INTR("THRE...");
+
+ if (uart_circ_empty(xmit))
+ __serial8250_stop_tx(&up->port, 0);
+}
+
+static _INLINE_ void check_modem_status(struct uart_8250_port *up)
+{
+ int status;
+
+ status = serial_in(up, UART_MSR);
+
+ if ((status & UART_MSR_ANY_DELTA) == 0)
+ return;
+
+ if (status & UART_MSR_TERI)
+ up->port.icount.rng++;
+ if (status & UART_MSR_DDSR)
+ up->port.icount.dsr++;
+ if (status & UART_MSR_DDCD)
+ uart_handle_dcd_change(&up->port, status & UART_MSR_DCD);
+ if (status & UART_MSR_DCTS)
+ uart_handle_cts_change(&up->port, status & UART_MSR_CTS);
+
+ wake_up_interruptible(&up->port.info->delta_msr_wait);
+}
+
+/*
+ * This handles the interrupt from one port.
+ */
+static inline void
+serial8250_handle_port(struct uart_8250_port *up, struct pt_regs *regs)
+{
+ unsigned int status = serial_inp(up, UART_LSR);
+
+ DEBUG_INTR("status = %x...", status);
+
+ if (status & UART_LSR_DR)
+ receive_chars(up, &status, regs);
+ check_modem_status(up);
+ if (status & UART_LSR_THRE)
+ transmit_chars(up);
+}
+
+/*
+ * This is the serial driver's interrupt routine.
+ *
+ * Arjan thinks the old way was overly complex, so it got simplified.
+ * Alan disagrees, saying that need the complexity to handle the weird
+ * nature of ISA shared interrupts. (This is a special exception.)
+ *
+ * In order to handle ISA shared interrupts properly, we need to check
+ * that all ports have been serviced, and therefore the ISA interrupt
+ * line has been de-asserted.
+ *
+ * This means we need to loop through all ports. checking that they
+ * don't have an interrupt pending.
+ */
+static void serial8250_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct irq_info *i = dev_id;
+ struct list_head *l, *end = NULL;
+ int pass_counter = 0;
+
+ DEBUG_INTR("serial8250_interrupt(%d)...", irq);
+
+ spin_lock(&i->lock);
+
+ l = i->head;
+ do {
+ struct uart_8250_port *up;
+ unsigned int iir;
+
+ up = list_entry(l, struct uart_8250_port, list);
+
+ iir = serial_in(up, UART_IIR);
+ if (!(iir & UART_IIR_NO_INT)) {
+ spin_lock(&up->port.lock);
+ serial8250_handle_port(up, regs);
+ spin_unlock(&up->port.lock);
+
+ end = NULL;
+ } else if (end == NULL)
+ end = l;
+
+ l = l->next;
+
+ if (l == i->head && pass_counter++ > PASS_LIMIT) {
+ /* If we hit this, we're dead. */
+ printk(KERN_ERR "serial8250: too much work for "
+ "irq%d\n", irq);
+ break;
+ }
+ } while (l != end);
+
+ spin_unlock(&i->lock);
+
+ DEBUG_INTR("end.\n");
+}
+
+/*
+ * To support ISA shared interrupts, we need to have one interrupt
+ * handler that ensures that the IRQ line has been deasserted
+ * before returning. Failing to do this will result in the IRQ
+ * line being stuck active, and, since ISA irqs are edge triggered,
+ * no more IRQs will be seen.
+ */
+static int serial_link_irq_chain(struct uart_8250_port *up)
+{
+ struct irq_info *i = irq_lists + up->port.irq;
+ int ret, irq_flags = share_irqs ? SA_SHIRQ : 0;
+
+ spin_lock_irq(&i->lock);
+
+ if (i->head) {
+ list_add(&up->list, i->head);
+ spin_unlock_irq(&i->lock);
+
+ ret = 0;
+ } else {
+ INIT_LIST_HEAD(&up->list);
+ i->head = &up->list;
+ spin_unlock_irq(&i->lock);
+
+ ret = request_irq(up->port.irq, serial8250_interrupt,
+ irq_flags, "serial", i);
+ }
+
+ return ret;
+}
+
+static void serial_unlink_irq_chain(struct uart_8250_port *up)
+{
+ struct irq_info *i = irq_lists + up->port.irq;
+
+ BUG_ON(i->head == NULL);
+
+ if (list_empty(i->head))
+ free_irq(up->port.irq, i);
+
+ spin_lock_irq(&i->lock);
+
+ if (!list_empty(i->head)) {
+ if (i->head == &up->list)
+ i->head = i->head->next;
+ list_del(&up->list);
+ } else {
+ BUG_ON(i->head != &up->list);
+ i->head = NULL;
+ }
+
+ spin_unlock_irq(&i->lock);
+}
+
+/*
+ * This function is used to handle ports that do not have an
+ * interrupt. This doesn't work very well for 16450's, but gives
+ * barely passable results for a 16550A. (Although at the expense
+ * of much CPU overhead).
+ */
+static void serial8250_timeout(unsigned long data)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)data;
+ unsigned int timeout;
+ unsigned int iir;
+
+ iir = serial_in(up, UART_IIR);
+ if (!(iir & UART_IIR_NO_INT)) {
+ spin_lock(&up->port.lock);
+ serial8250_handle_port(up, NULL);
+ spin_unlock(&up->port.lock);
+ }
+
+ timeout = up->port.timeout;
+ timeout = timeout > 6 ? (timeout / 2 - 2) : 1;
+ mod_timer(&up->timer, jiffies + timeout);
+}
+
+static unsigned int serial8250_tx_empty(struct uart_port *port)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned long flags;
+ unsigned int ret;
+
+ spin_lock_irqsave(&up->port.lock, flags);
+ ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0;
+ spin_unlock_irqrestore(&up->port.lock, flags);
+
+ return ret;
+}
+
+static unsigned int serial8250_get_mctrl(struct uart_port *port)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned long flags;
+ unsigned char status;
+ unsigned int ret;
+
+ spin_lock_irqsave(&up->port.lock, flags);
+ status = serial_in(up, UART_MSR);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+
+ ret = 0;
+ if (status & UART_MSR_DCD)
+ ret |= TIOCM_CAR;
+ if (status & UART_MSR_RI)
+ ret |= TIOCM_RNG;
+ if (status & UART_MSR_DSR)
+ ret |= TIOCM_DSR;
+ if (status & UART_MSR_CTS)
+ ret |= TIOCM_CTS;
+ return ret;
+}
+
+static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned char mcr = ALPHA_KLUDGE_MCR;
+
+ if (mctrl & TIOCM_RTS)
+ mcr |= UART_MCR_RTS;
+ if (mctrl & TIOCM_DTR)
+ mcr |= UART_MCR_DTR;
+ if (mctrl & TIOCM_OUT1)
+ mcr |= UART_MCR_OUT1;
+ if (mctrl & TIOCM_OUT2)
+ mcr |= UART_MCR_OUT2;
+ if (mctrl & TIOCM_LOOP)
+ mcr |= UART_MCR_LOOP;
+
+ serial_out(up, UART_MCR, mcr);
+}
+
+static void serial8250_break_ctl(struct uart_port *port, int break_state)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned long flags;
+
+ spin_lock_irqsave(&up->port.lock, flags);
+ if (break_state == -1)
+ up->lcr |= UART_LCR_SBC;
+ else
+ up->lcr &= ~UART_LCR_SBC;
+ serial_out(up, UART_LCR, up->lcr);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+static int serial8250_startup(struct uart_port *port)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned long flags;
+ int retval;
+
+ if (up->port.type == PORT_16C950) {
+ /* Wake up and initialize UART */
+ up->acr = 0;
+ serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_EFR, UART_EFR_ECB);
+ serial_outp(up, UART_IER, 0);
+ serial_outp(up, UART_LCR, 0);
+ serial_icr_write(up, UART_CSR, 0); /* Reset the UART */
+ serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_EFR, UART_EFR_ECB);
+ serial_outp(up, UART_LCR, 0);
+ }
+
+#ifdef CONFIG_SERIAL_8250_RSA
+ /*
+ * If this is an RSA port, see if we can kick it up to the
+ * higher speed clock.
+ */
+ enable_rsa(up);
+#endif
+
+ /*
+ * Clear the FIFO buffers and disable them.
+ * (they will be reeanbled in change_speed())
+ */
+ if (uart_config[up->port.type].flags & UART_CLEAR_FIFO) {
+ serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
+ UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
+ serial_outp(up, UART_FCR, 0);
+ }
+
+ /*
+ * Clear the interrupt registers.
+ */
+ (void) serial_inp(up, UART_LSR);
+ (void) serial_inp(up, UART_RX);
+ (void) serial_inp(up, UART_IIR);
+ (void) serial_inp(up, UART_MSR);
+
+ /*
+ * At this point, there's no way the LSR could still be 0xff;
+ * if it is, then bail out, because there's likely no UART
+ * here.
+ */
+ if (!(up->port.flags & ASYNC_BUGGY_UART) &&
+ (serial_inp(up, UART_LSR) == 0xff)) {
+ printk("ttyS%d: LSR safety check engaged!\n", up->port.line);
+ return -ENODEV;
+ }
+
+ /*
+ * If the "interrupt" for this port doesn't correspond with any
+ * hardware interrupt, we use a timer-based system. The original
+ * driver used to do this with IRQ0.
+ */
+ if (!is_real_interrupt(up->port.irq)) {
+ unsigned int timeout = up->port.timeout;
+
+ timeout = timeout > 6 ? (timeout / 2 - 2) : 1;
+
+ up->timer.data = (unsigned long)up;
+ mod_timer(&up->timer, jiffies + timeout);
+ } else {
+ retval = serial_link_irq_chain(up);
+ if (retval)
+ return retval;
+ }
+
+ /*
+ * Now, initialize the UART
+ */
+ serial_outp(up, UART_LCR, UART_LCR_WLEN8);
+
+ spin_lock_irqsave(&up->port.lock, flags);
+ if (up->port.flags & ASYNC_FOURPORT) {
+ if (!is_real_interrupt(up->port.irq))
+ up->port.mctrl |= TIOCM_OUT1;
+ } else
+ /*
+ * Most PC uarts need OUT2 raised to enable interrupts.
+ */
+ if (is_real_interrupt(up->port.irq))
+ up->port.mctrl |= TIOCM_OUT2;
+
+ serial8250_set_mctrl(&up->port, up->port.mctrl);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+
+ /*
+ * Finally, enable interrupts. Note: Modem status interrupts
+ * are set via change_speed(), which will be occuring imminently
+ * anyway, so we don't enable them here.
+ */
+ up->ier = UART_IER_RLSI | UART_IER_RDI;
+ serial_outp(up, UART_IER, up->ier);
+
+ if (up->port.flags & ASYNC_FOURPORT) {
+ unsigned int icp;
+ /*
+ * Enable interrupts on the AST Fourport board
+ */
+ icp = (up->port.iobase & 0xfe0) | 0x01f;
+ outb_p(0x80, icp);
+ (void) inb_p(icp);
+ }
+
+ /*
+ * And clear the interrupt registers again for luck.
+ */
+ (void) serial_inp(up, UART_LSR);
+ (void) serial_inp(up, UART_RX);
+ (void) serial_inp(up, UART_IIR);
+ (void) serial_inp(up, UART_MSR);
+
+ return 0;
+}
+
+static void serial8250_shutdown(struct uart_port *port)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned long flags;
+
+ /*
+ * Disable interrupts from this port
+ */
+ up->ier = 0;
+ serial_outp(up, UART_IER, 0);
+
+ spin_lock_irqsave(&up->port.lock, flags);
+ if (up->port.flags & ASYNC_FOURPORT) {
+ /* reset interrupts on the AST Fourport board */
+ inb((up->port.iobase & 0xfe0) | 0x1f);
+ up->port.mctrl |= TIOCM_OUT1;
+ } else
+ up->port.mctrl &= ~TIOCM_OUT2;
+
+ serial8250_set_mctrl(&up->port, up->port.mctrl);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+
+ /*
+ * Disable break condition and FIFOs
+ */
+ serial_out(up, UART_LCR, serial_inp(up, UART_LCR) & ~UART_LCR_SBC);
+ serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
+ UART_FCR_CLEAR_RCVR |
+ UART_FCR_CLEAR_XMIT);
+ serial_outp(up, UART_FCR, 0);
+
+#ifdef CONFIG_SERIAL_8250_RSA
+ /*
+ * Reset the RSA board back to 115kbps compat mode.
+ */
+ disable_rsa(up);
+#endif
+
+ /*
+ * Read data port to reset things, and then unlink from
+ * the IRQ chain.
+ */
+ (void) serial_in(up, UART_RX);
+
+ if (!is_real_interrupt(up->port.irq))
+ del_timer_sync(&up->timer);
+ else
+ serial_unlink_irq_chain(up);
+}
+
+static void
+serial8250_change_speed(struct uart_port *port, unsigned int cflag,
+ unsigned int iflag, unsigned int quot)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned char cval, fcr = 0;
+ unsigned long flags;
+
+ printk("+++ change_speed port %p cflag %08x quot %d\n", port, cflag, quot);
+
+ switch (cflag & CSIZE) {
+ case CS5:
+ cval = 0x00;
+ break;
+ case CS6:
+ cval = 0x01;
+ break;
+ case CS7:
+ cval = 0x02;
+ break;
+ default:
+ case CS8:
+ cval = 0x03;
+ break;
+ }
+
+ if (cflag & CSTOPB)
+ cval |= 0x04;
+ if (cflag & PARENB)
+ cval |= UART_LCR_PARITY;
+ if (!(cflag & PARODD))
+ cval |= UART_LCR_EPAR;
+#ifdef CMSPAR
+ if (cflag & CMSPAR)
+ cval |= UART_LCR_SPAR;
+#endif
+
+ /*
+ * Work around a bug in the Oxford Semiconductor 952 rev B
+ * chip which causes it to seriously miscalculate baud rates
+ * when DLL is 0.
+ */
+ if ((quot & 0xff) == 0 && up->port.type == PORT_16C950 &&
+ up->rev == 0x5201)
+ quot ++;
+
+ if (uart_config[up->port.type].flags & UART_USE_FIFO) {
+ if ((up->port.uartclk / quot) < (2400 * 16))
+ fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_1;
+#ifdef CONFIG_SERIAL_8250_RSA
+ else if (up->port.type == PORT_RSA)
+ fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_14;
+#endif
+ else
+ fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_8;
+ }
+ if (up->port.type == PORT_16750)
+ fcr |= UART_FCR7_64BYTE;
+
+ up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
+ if (iflag & IGNPAR)
+ up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE;
+ if (iflag & (BRKINT | PARMRK))
+ up->port.read_status_mask |= UART_LSR_BI;
+
+ /*
+ * Characteres to ignore
+ */
+ up->port.ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
+ if (iflag & IGNBRK) {
+ up->port.ignore_status_mask |= UART_LSR_BI;
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns too (for real raw support).
+ */
+ if (iflag & IGNPAR)
+ up->port.ignore_status_mask |= UART_LSR_OE;
+ }
+
+ /*
+ * ignore all characters if CREAD is not set
+ */
+ if ((cflag & CREAD) == 0)
+ up->port.ignore_status_mask |= UART_LSR_DR;
+
+ /*
+ * CTS flow control flag and modem status interrupts
+ */
+ up->ier &= ~UART_IER_MSI;
+ if (UART_ENABLE_MS(&up->port, cflag))
+ up->ier |= UART_IER_MSI;
+
+ /*
+ * Ok, we're now changing the port state. Do it with
+ * interrupts disabled.
+ */
+ spin_lock_irqsave(&up->port.lock, flags);
+ serial_out(up, UART_IER, up->ier);
+
+ if (uart_config[up->port.type].flags & UART_STARTECH) {
+ serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_EFR, cflag & CRTSCTS ? UART_EFR_CTS :0);
+ }
+ serial_outp(up, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */
+ serial_outp(up, UART_DLL, quot & 0xff); /* LS of divisor */
+ serial_outp(up, UART_DLM, quot >> 8); /* MS of divisor */
+ if (up->port.type == PORT_16750)
+ serial_outp(up, UART_FCR, fcr); /* set fcr */
+ serial_outp(up, UART_LCR, cval); /* reset DLAB */
+ up->lcr = cval; /* Save LCR */
+ if (up->port.type != PORT_16750) {
+ if (fcr & UART_FCR_ENABLE_FIFO) {
+ /* emulated UARTs (Lucent Venus 167x) need two steps */
+ serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
+ }
+ serial_outp(up, UART_FCR, fcr); /* set fcr */
+ }
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+static void
+serial8250_pm(struct uart_port *port, unsigned int state,
+ unsigned int oldstate)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ if (state) {
+ /* sleep */
+ if (uart_config[up->port.type].flags & UART_STARTECH) {
+ /* Arrange to enter sleep mode */
+ serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_EFR, UART_EFR_ECB);
+ serial_outp(up, UART_LCR, 0);
+ serial_outp(up, UART_IER, UART_IERX_SLEEP);
+ serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_EFR, 0);
+ serial_outp(up, UART_LCR, 0);
+ }
+ if (up->port.type == PORT_16750) {
+ /* Arrange to enter sleep mode */
+ serial_outp(up, UART_IER, UART_IERX_SLEEP);
+ }
+
+ if (up->pm)
+ up->pm(port, state, oldstate);
+ } else {
+ /* wake */
+ if (uart_config[up->port.type].flags & UART_STARTECH) {
+ /* Wake up UART */
+ serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_EFR, UART_EFR_ECB);
+ /*
+ * Turn off LCR == 0xBF so we actually set the IER
+ * register on the XR16C850
+ */
+ serial_outp(up, UART_LCR, 0);
+ serial_outp(up, UART_IER, 0);
+ /*
+ * Now reset LCR so we can turn off the ECB bit
+ */
+ serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_EFR, 0);
+ /*
+ * For a XR16C850, we need to set the trigger levels
+ */
+ if (up->port.type == PORT_16850) {
+ unsigned char fctr;
+
+ fctr = serial_inp(up, UART_FCTR) &
+ ~(UART_FCTR_RX | UART_FCTR_TX);
+ serial_outp(up, UART_FCTR, fctr |
+ UART_FCTR_TRGD |
+ UART_FCTR_RX);
+ serial_outp(up, UART_TRG, UART_TRG_96);
+ serial_outp(up, UART_FCTR, fctr |
+ UART_FCTR_TRGD |
+ UART_FCTR_TX);
+ serial_outp(up, UART_TRG, UART_TRG_96);
+ }
+ serial_outp(up, UART_LCR, 0);
+ }
+
+ if (up->port.type == PORT_16750) {
+ /* Wake up UART */
+ serial_outp(up, UART_IER, 0);
+ }
+
+ if (up->pm)
+ up->pm(port, state, oldstate);
+ }
+}
+
+/*
+ * Resource handling. This is complicated by the fact that resources
+ * depend on the port type. Maybe we should be claiming the standard
+ * 8250 ports, and then trying to get other resources as necessary?
+ */
+static int
+serial8250_request_std_resource(struct uart_8250_port *up, struct resource **res)
+{
+ unsigned int size = 8 << up->port.regshift;
+ int ret = 0;
+
+ switch (up->port.iotype) {
+ case SERIAL_IO_MEM:
+ if (up->port.mapbase) {
+ *res = request_mem_region(up->port.mapbase, size, "serial");
+ if (!*res)
+ ret = -EBUSY;
+ }
+ break;
+
+ case SERIAL_IO_HUB6:
+ case SERIAL_IO_PORT:
+ *res = request_region(up->port.iobase, size, "serial");
+ if (!*res)
+ ret = -EBUSY;
+ break;
+ }
+ return ret;
+}
+
+static int
+serial8250_request_rsa_resource(struct uart_8250_port *up, struct resource **res)
+{
+ unsigned int size = 8 << up->port.regshift;
+ unsigned long start;
+ int ret = 0;
+
+ switch (up->port.iotype) {
+ case SERIAL_IO_MEM:
+ if (up->port.mapbase) {
+ start = up->port.mapbase;
+ start += UART_RSA_BASE << up->port.regshift;
+ *res = request_mem_region(start, size, "serial-rsa");
+ if (!*res)
+ ret = -EBUSY;
+ }
+ break;
+
+ case SERIAL_IO_HUB6:
+ case SERIAL_IO_PORT:
+ start = up->port.iobase;
+ start += UART_RSA_BASE << up->port.regshift;
+ *res = request_region(start, size, "serial-rsa");
+ if (!*res)
+ ret = -EBUSY;
+ break;
+ }
+
+ return ret;
+}
+
+static void serial8250_release_port(struct uart_port *port)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ unsigned long start, offset = 0, size = 0;
+
+ if (up->port.type == PORT_RSA) {
+ offset = UART_RSA_BASE << up->port.regshift;
+ size = 8;
+ }
+
+ size <<= up->port.regshift;
+
+ switch (up->port.iotype) {
+ case SERIAL_IO_MEM:
+ if (up->port.mapbase) {
+ /*
+ * Unmap the area.
+ */
+ iounmap(up->port.membase);
+ up->port.membase = NULL;
+
+ start = up->port.mapbase;
+
+ if (size)
+ release_mem_region(start + offset, size);
+ release_mem_region(start, 8 << up->port.regshift);
+ }
+ break;
+
+ case SERIAL_IO_HUB6:
+ case SERIAL_IO_PORT:
+ start = up->port.iobase;
+
+ if (size)
+ release_region(start + offset, size);
+ release_region(start + offset, 8 << up->port.regshift);
+ break;
+
+ default:
+ break;
+ }
+}
+
+static int serial8250_request_port(struct uart_port *port)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct resource *res = NULL, *res_rsa = NULL;
+ int ret = -EBUSY;
+
+ if (up->port.type == PORT_RSA) {
+ ret = serial8250_request_rsa_resource(up, &res_rsa);
+ if (ret)
+ return ret;
+ }
+
+ ret = serial8250_request_std_resource(up, &res);
+
+ /*
+ * If we have a mapbase, then request that as well.
+ */
+ if (res != NULL && up->port.iotype == SERIAL_IO_MEM &&
+ up->port.mapbase) {
+ int size = res->end - res->start + 1;
+
+ up->port.membase = ioremap(up->port.mapbase, size);
+ if (!up->port.membase)
+ ret = -ENOMEM;
+ }
+
+ if (ret) {
+ if (res_rsa)
+ release_resource(res_rsa);
+ if (res)
+ release_resource(res);
+ }
+ return ret;
+}
+
+static void serial8250_config_port(struct uart_port *port, int flags)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct resource *res_std = NULL, *res_rsa = NULL;
+ int probeflags = PROBE_ANY;
+ int ret;
+
+#ifdef CONFIG_MCA
+ /*
+ * Don't probe for MCA ports on non-MCA machines.
+ */
+ if (up->port.flags & ASYNC_BOOT_ONLYMCA && !MCA_bus)
+ return;
+#endif
+
+ /*
+ * Find the region that we can probe for. This in turn
+ * tells us whether we can probe for the type of port.
+ */
+ ret = serial8250_request_std_resource(up, &res_std);
+ if (ret)
+ return;
+
+ ret = serial8250_request_rsa_resource(up, &res_rsa);
+ if (ret)
+ probeflags &= ~PROBE_RSA;
+
+ if (flags & UART_CONFIG_TYPE)
+ autoconfig(up, probeflags);
+ if (up->port.type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ)
+ autoconfig_irq(up);
+
+ /*
+ * If the port wasn't an RSA port, release the resource.
+ */
+ if (up->port.type != PORT_RSA && res_rsa)
+ release_resource(res_rsa);
+
+ if (up->port.type == PORT_UNKNOWN)
+ release_resource(res_std);
+}
+
+static int
+serial8250_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ if (ser->irq >= NR_IRQS || ser->irq < 0 ||
+ ser->baud_base < 9600 || ser->type < PORT_UNKNOWN ||
+ ser->type > PORT_MAX_8250 || ser->type == PORT_CIRRUS ||
+ ser->type == PORT_STARTECH)
+ return -EINVAL;
+ return 0;
+}
+
+static const char *
+serial8250_type(struct uart_port *port)
+{
+ int type = port->type;
+
+ if (type >= ARRAY_SIZE(uart_config))
+ type = 0;
+ return uart_config[type].name;
+}
+
+static struct uart_ops serial8250_pops = {
+ tx_empty: serial8250_tx_empty,
+ set_mctrl: serial8250_set_mctrl,
+ get_mctrl: serial8250_get_mctrl,
+ stop_tx: serial8250_stop_tx,
+ start_tx: serial8250_start_tx,
+ stop_rx: serial8250_stop_rx,
+ enable_ms: serial8250_enable_ms,
+ break_ctl: serial8250_break_ctl,
+ startup: serial8250_startup,
+ shutdown: serial8250_shutdown,
+ change_speed: serial8250_change_speed,
+ pm: serial8250_pm,
+ type: serial8250_type,
+ release_port: serial8250_release_port,
+ request_port: serial8250_request_port,
+ config_port: serial8250_config_port,
+ verify_port: serial8250_verify_port,
+};
+
+static struct uart_8250_port serial8250_ports[UART_NR];
+
+static void __init serial8250_isa_init_ports(void)
+{
+ static int first = 1;
+ int i;
+
+ if (!first)
+ return;
+ first = 0;
+
+ for (i = 0; i < ARRAY_SIZE(old_serial_port); i++) {
+ serial8250_ports[i].port.iobase = old_serial_port[i].port;
+ serial8250_ports[i].port.irq = irq_cannonicalize(old_serial_port[i].irq);
+ serial8250_ports[i].port.uartclk = old_serial_port[i].base_baud * 16;
+ serial8250_ports[i].port.flags = old_serial_port[i].flags;
+ serial8250_ports[i].port.ops = &serial8250_pops;
+ }
+}
+
+static void __init serial8250_register_ports(struct uart_driver *drv)
+{
+ int i;
+
+ serial8250_isa_init_ports();
+
+ for (i = 0; i < UART_NR; i++) {
+ serial8250_ports[i].port.line = i;
+ serial8250_ports[i].port.ops = &serial8250_pops;
+ init_timer(&serial8250_ports[i].timer);
+ serial8250_ports[i].timer.function = serial8250_timeout;
+ uart_add_one_port(drv, &serial8250_ports[i].port);
+ }
+}
+
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+
+#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
+
+/*
+ * Wait for transmitter & holding register to empty
+ */
+static inline void wait_for_xmitr(struct uart_8250_port *up)
+{
+ unsigned int status, tmout = 10000;
+
+ /* Wait up to 10ms for the character(s) to be sent. */
+ do {
+ status = serial_in(up, UART_LSR);
+
+ if (status & UART_LSR_BI)
+ up->lsr_break_flag = UART_LSR_BI;
+
+ if (--tmout == 0)
+ break;
+ udelay(1);
+ } while ((status & BOTH_EMPTY) != BOTH_EMPTY);
+
+ /* Wait up to 1s for flow control if necessary */
+ if (up->port.flags & ASYNC_CONS_FLOW) {
+ tmout = 1000000;
+ while (--tmout &&
+ ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0))
+ udelay(1);
+ }
+}
+
+/*
+ * Print a string to the serial port trying not to disturb
+ * any possible real use of the port...
+ *
+ * The console_lock must be held when we get here.
+ */
+static void
+serial8250_console_write(struct console *co, const char *s, unsigned int count)
+{
+ struct uart_8250_port *up = &serial8250_ports[co->index];
+ unsigned int ier;
+ int i;
+
+ /*
+ * First save the UER then disable the interrupts
+ */
+ ier = serial_in(up, UART_IER);
+ serial_out(up, UART_IER, 0);
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++, s++) {
+ wait_for_xmitr(up);
+
+ /*
+ * Send the character out.
+ * If a LF, also do CR...
+ */
+ serial_out(up, UART_TX, *s);
+ if (*s == 10) {
+ wait_for_xmitr(up);
+ serial_out(up, UART_TX, 13);
+ }
+ }
+
+ /*
+ * Finally, wait for transmitter to become empty
+ * and restore the IER
+ */
+ wait_for_xmitr(up);
+ serial_out(up, UART_IER, ier);
+}
+
+static kdev_t serial8250_console_device(struct console *co)
+{
+ return mk_kdev(TTY_MAJOR, 64 + co->index);
+}
+
+static int __init serial8250_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 9600;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ if (co->index >= UART_NR)
+ co->index = 0;
+ port = &serial8250_ports[co->index].port;
+ printk("+++ index %d port %p iobase %x\n", co->index, port, port->iobase);
+
+ /*
+ * Temporary fix.
+ */
+ spin_lock_init(&port->lock);
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ printk("+++ baud %d bits %d parity %c flow %c\n", baud, parity, bits, flow);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct console serial8250_console = {
+ name: "ttyS",
+ write: serial8250_console_write,
+ device: serial8250_console_device,
+ setup: serial8250_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+};
+
+void __init serial8250_console_init(void)
+{
+ serial8250_isa_init_ports();
+ register_console(&serial8250_console);
+}
+
+#define SERIAL8250_CONSOLE &serial8250_console
+#else
+#define SERIAL8250_CONSOLE NULL
+#endif
+
+static struct uart_driver serial8250_reg = {
+ owner: THIS_MODULE,
+ driver_name: "serial",
+#ifdef CONFIG_DEVFS_FS
+ dev_name: "tts/%d",
+#else
+ dev_name: "ttyS",
+#endif
+ major: TTY_MAJOR,
+ minor: 64,
+ nr: UART_NR,
+ cons: SERIAL8250_CONSOLE,
+};
+
+/*
+ * register_serial and unregister_serial allows for 16x50 serial ports to be
+ * configured at run-time, to support PCMCIA modems.
+ */
+
+static int __register_serial(struct serial_struct *req, int line)
+{
+ struct uart_port port;
+
+ port.iobase = req->port;
+ port.membase = req->iomem_base;
+ port.irq = req->irq;
+ port.uartclk = req->baud_base * 16;
+ port.fifosize = req->xmit_fifo_size;
+ port.regshift = req->iomem_reg_shift;
+ port.iotype = req->io_type;
+ port.flags = req->flags | ASYNC_BOOT_AUTOCONF;
+ port.line = line;
+
+ if (HIGH_BITS_OFFSET)
+ port.iobase |= req->port_high << HIGH_BITS_OFFSET;
+
+ /*
+ * If a clock rate wasn't specified by the low level
+ * driver, then default to the standard clock rate.
+ */
+ if (port.uartclk == 0)
+ port.uartclk = BASE_BAUD * 16;
+
+ return uart_register_port(&serial8250_reg, &port);
+}
+
+/**
+ * register_serial - configure a 16x50 serial port at runtime
+ * @req: request structure
+ *
+ * Configure the serial port specified by the request. If the
+ * port exists and is in use an error is returned. If the port
+ * is not currently in the table it is added.
+ *
+ * The port is then probed and if neccessary the IRQ is autodetected
+ * If this fails an error is returned.
+ *
+ * On success the port is ready to use and the line number is returned.
+ */
+int register_serial(struct serial_struct *req)
+{
+ return __register_serial(req, -1);
+}
+
+int __init early_serial_setup(struct serial_struct *req)
+{
+ __register_serial(req, req->line);
+ return 0;
+}
+
+/**
+ * unregister_serial - remove a 16x50 serial port at runtime
+ * @line: serial line number
+ *
+ * Remove one serial port. This may be called from interrupt
+ * context.
+ */
+void unregister_serial(int line)
+{
+ uart_unregister_port(&serial8250_reg, line);
+}
+
+/*
+ * This is for ISAPNP only.
+ */
+void serial8250_get_irq_map(unsigned int *map)
+{
+ int i;
+
+ for (i = 0; i < UART_NR; i++) {
+ if (serial8250_ports[i].port.type != PORT_UNKNOWN &&
+ serial8250_ports[i].port.irq < 16)
+ *map |= 1 << serial8250_ports[i].port.irq;
+ }
+}
+
+static int __init serial8250_init(void)
+{
+ int ret, i;
+
+ printk(KERN_INFO "Serial: 8250/16550 driver $Revision: 1.80 $ "
+ "IRQ sharing %sabled\n", share_irqs ? "en" : "dis");
+
+ for (i = 0; i < NR_IRQS; i++)
+ spin_lock_init(&irq_lists[i].lock);
+
+ ret = uart_register_driver(&serial8250_reg);
+ if (ret)
+ return ret;
+
+ serial8250_register_ports(&serial8250_reg);
+ return 0;
+}
+
+static void __exit serial8250_exit(void)
+{
+ int i;
+
+ for (i = 0; i < UART_NR; i++)
+ uart_remove_one_port(&serial8250_reg, &serial8250_ports[i].port);
+
+ uart_unregister_driver(&serial8250_reg);
+}
+
+module_init(serial8250_init);
+module_exit(serial8250_exit);
+
+EXPORT_SYMBOL(register_serial);
+EXPORT_SYMBOL(unregister_serial);
+EXPORT_SYMBOL(serial8250_get_irq_map);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Generic 8250/16x50 serial driver $Revision: 1.80 $");
+
+MODULE_PARM(share_irqs, "i");
+MODULE_PARM_DESC(share_irqs, "Share IRQs with other non-8250/16x50 devices"
+ " (unsafe)");
+
+#if defined(CONFIG_SERIAL_8250_RSA) && defined(MODULE)
+MODULE_PARM(probe_rsa, "1-" __MODULE_STRING(PORT_RSA_MAX) "i");
+MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA");
+MODULE_PARM(force_rsa, "1-" __MODULE_STRING(PORT_RSA_MAX) "i");
+MODULE_PARM_DESC(force_rsa, "Force I/O ports for RSA");
+#endif
--- /dev/null
+/*
+ * linux/drivers/char/serial_8250.h
+ *
+ * Driver for 8250/16550-type serial ports
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * Copyright (C) 2001 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * $Id: serial_8250.h,v 1.7 2002/07/06 16:24:46 rmk Exp $
+ */
+
+#include <linux/config.h>
+
+struct serial8250_probe {
+ struct module *owner;
+ int (*pci_init_one)(struct pci_dev *dev);
+ void (*pci_remove_one)(struct pci_dev *dev);
+ void (*pnp_init)(void);
+};
+
+int serial8250_register_probe(struct serial8250_probe *probe);
+void serial8250_unregister_probe(struct serial8250_probe *probe);
+void serial8250_get_irq_map(unsigned int *map);
+
+struct old_serial_port {
+ unsigned int uart;
+ unsigned int base_baud;
+ unsigned int port;
+ unsigned int irq;
+ unsigned int flags;
+};
+
+#undef SERIAL_DEBUG_PCI
+
+#if defined(__i386__) && (defined(CONFIG_M386) || defined(CONFIG_M486))
+#define SERIAL_INLINE
+#endif
+
+#ifdef SERIAL_INLINE
+#define _INLINE_ inline
+#else
+#define _INLINE_
+#endif
+
+#define PROBE_RSA (1 << 0)
+#define PROBE_ANY (~0)
+
+#define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8)
+
+#ifdef CONFIG_SERIAL_8250_SHARE_IRQ
+#define SERIAL8250_SHARE_IRQS 1
+#else
+#define SERIAL8250_SHARE_IRQS 0
+#endif
--- /dev/null
+/*======================================================================
+
+ A driver for PCMCIA serial devices
+
+ serial_cs.c 1.123 2000/08/24 18:46:38
+
+ The contents of this file are subject to the Mozilla Public
+ License Version 1.1 (the "License"); you may not use this file
+ except in compliance with the License. You may obtain a copy of
+ the License at http://www.mozilla.org/MPL/
+
+ Software distributed under the License is distributed on an "AS
+ IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ rights and limitations under the License.
+
+ The initial developer of the original code is David A. Hinds
+ <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+
+ Alternatively, the contents of this file may be used under the
+ terms of the GNU General Public License version 2 (the "GPL"), in which
+ case the provisions of the GPL are applicable instead of the
+ above. If you wish to allow the use of your version of this file
+ only under the terms of the GPL and not to allow others to use
+ your version of this file under the MPL, indicate your decision
+ by deleting the provisions above and replace them with the notice
+ and other provisions required by the GPL. If you do not delete
+ the provisions above, a recipient may use your version of this
+ file under either the MPL or the GPL.
+
+======================================================================*/
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/tty.h>
+#include <linux/serial.h>
+#include <linux/major.h>
+#include <linux/tqueue.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+MODULE_PARM(pc_debug, "i");
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version = "serial_cs.c 1.123 2000/08/24 18:46:38 (David Hinds)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+/* Parameters that can be set with 'insmod' */
+
+/* Bit map of interrupts to choose from */
+static u_int irq_mask = 0xdeb8;
+static int irq_list[4] = { -1 };
+
+/* Enable the speaker? */
+static int do_sound = 1;
+
+MODULE_PARM(irq_mask, "i");
+MODULE_PARM(irq_list, "1-4i");
+MODULE_PARM(do_sound, "i");
+
+/*====================================================================*/
+
+/* Table of multi-port card ID's */
+
+struct multi_id {
+ u_short manfid;
+ u_short prodid;
+ int multi; /* 1 = multifunction, > 1 = # ports */
+};
+
+static struct multi_id multi_id[] = {
+ { MANFID_OMEGA, PRODID_OMEGA_QSP_100, 4 },
+ { MANFID_QUATECH, PRODID_QUATECH_DUAL_RS232, 2 },
+ { MANFID_QUATECH, PRODID_QUATECH_DUAL_RS232_D1, 2 },
+ { MANFID_QUATECH, PRODID_QUATECH_QUAD_RS232, 4 },
+ { MANFID_SOCKET, PRODID_SOCKET_DUAL_RS232, 2 },
+ { MANFID_INTEL, PRODID_INTEL_DUAL_RS232, 2 },
+ { MANFID_NATINST, PRODID_NATINST_QUAD_RS232, 4 }
+};
+#define MULTI_COUNT (sizeof(multi_id)/sizeof(struct multi_id))
+
+typedef struct serial_info {
+ dev_link_t link;
+ int ndev;
+ int multi;
+ int slave;
+ int manfid;
+ dev_node_t node[4];
+ int line[4];
+ struct tq_struct remove;
+} serial_info_t;
+
+static void serial_config(dev_link_t * link);
+static int serial_event(event_t event, int priority,
+ event_callback_args_t * args);
+
+static dev_info_t dev_info = "serial_cs";
+
+static dev_link_t *serial_attach(void);
+static void serial_detach(dev_link_t *);
+
+static dev_link_t *dev_list = NULL;
+
+/*====================================================================*/
+
+static void
+cs_error(client_handle_t handle, int func, int ret)
+{
+ error_info_t err = { func, ret };
+ CardServices(ReportError, handle, &err);
+}
+
+/*======================================================================
+
+ After a card is removed, do_serial_release() will unregister
+ the serial device(s), and release the PCMCIA configuration.
+
+======================================================================*/
+
+/*
+ * This always runs in process context.
+ */
+static void do_serial_release(void *arg)
+{
+ struct serial_info *info = arg;
+ int i;
+
+ DEBUG(0, "serial_release(0x%p)\n", &info->link);
+
+ /*
+ * Recheck to see if the device is still configured.
+ */
+ if (info->link.state & DEV_CONFIG) {
+ for (i = 0; i < info->ndev; i++)
+ unregister_serial(info->line[i]);
+
+ info->link.dev = NULL;
+
+ if (!info->slave) {
+ CardServices(ReleaseConfiguration, info->link.handle);
+ CardServices(ReleaseIO, info->link.handle, &info->link.io);
+ CardServices(ReleaseIRQ, info->link.handle, &info->link.irq);
+ }
+
+ info->link.state &= ~DEV_CONFIG;
+ }
+}
+
+/*
+ * This may be called from IRQ context.
+ */
+static void serial_remove(dev_link_t *link)
+{
+ struct serial_info *info = link->priv;
+
+ link->state &= ~DEV_PRESENT;
+
+ /*
+ * FIXME: Since the card has probably been removed,
+ * we should call into the serial layer and hang up
+ * the ports on the card immediately.
+ */
+
+ if (link->state & DEV_CONFIG)
+ schedule_task(&info->remove);
+}
+
+/*======================================================================
+
+ serial_attach() creates an "instance" of the driver, allocating
+ local data structures for one device. The device is registered
+ with Card Services.
+
+======================================================================*/
+
+static dev_link_t *serial_attach(void)
+{
+ serial_info_t *info;
+ client_reg_t client_reg;
+ dev_link_t *link;
+ int i, ret;
+
+ DEBUG(0, "serial_attach()\n");
+
+ /* Create new serial device */
+ info = kmalloc(sizeof (*info), GFP_KERNEL);
+ if (!info)
+ return NULL;
+ memset(info, 0, sizeof (*info));
+ link = &info->link;
+ link->priv = info;
+
+ INIT_TQUEUE(&info->remove, do_serial_release, info);
+
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+ link->io.NumPorts1 = 8;
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+ link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
+ if (irq_list[0] == -1)
+ link->irq.IRQInfo2 = irq_mask;
+ else
+ for (i = 0; i < 4; i++)
+ link->irq.IRQInfo2 |= 1 << irq_list[i];
+ link->conf.Attributes = CONF_ENABLE_IRQ;
+ link->conf.Vcc = 50;
+ if (do_sound) {
+ link->conf.Attributes |= CONF_ENABLE_SPKR;
+ link->conf.Status = CCSR_AUDIO_ENA;
+ }
+ link->conf.IntType = INT_MEMORY_AND_IO;
+
+ /* Register with Card Services */
+ link->next = dev_list;
+ dev_list = link;
+ client_reg.dev_info = &dev_info;
+ client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
+ client_reg.EventMask =
+ CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+ CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+ CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+ client_reg.event_handler = &serial_event;
+ client_reg.Version = 0x0210;
+ client_reg.event_callback_args.client_data = link;
+ ret = CardServices(RegisterClient, &link->handle, &client_reg);
+ if (ret != CS_SUCCESS) {
+ cs_error(link->handle, RegisterClient, ret);
+ serial_detach(link);
+ return NULL;
+ }
+
+ return link;
+}
+
+/*======================================================================
+
+ This deletes a driver "instance". The device is de-registered
+ with Card Services. If it has been released, all local data
+ structures are freed. Otherwise, the structures will be freed
+ when the device is released.
+
+======================================================================*/
+
+static void serial_detach(dev_link_t * link)
+{
+ serial_info_t *info = link->priv;
+ dev_link_t **linkp;
+ int ret;
+
+ DEBUG(0, "serial_detach(0x%p)\n", link);
+
+ /* Locate device structure */
+ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+ if (*linkp == link)
+ break;
+ if (*linkp == NULL)
+ return;
+
+ /*
+ * Ensure any outstanding scheduled tasks are completed.
+ */
+ flush_scheduled_tasks();
+
+ /*
+ * Ensure that the ports have been released.
+ */
+ do_serial_release(info);
+
+ if (link->handle) {
+ ret = CardServices(DeregisterClient, link->handle);
+ if (ret != CS_SUCCESS)
+ cs_error(link->handle, DeregisterClient, ret);
+ }
+
+ /* Unlink device structure, free bits */
+ *linkp = link->next;
+ kfree(info);
+}
+
+/*====================================================================*/
+
+static int setup_serial(serial_info_t * info, ioaddr_t port, int irq)
+{
+ struct serial_struct serial;
+ int line;
+
+ memset(&serial, 0, sizeof (serial));
+ serial.port = port;
+ serial.irq = irq;
+ serial.flags = ASYNC_SKIP_TEST | ASYNC_SHARE_IRQ;
+ line = register_serial(&serial);
+ if (line < 0) {
+ printk(KERN_NOTICE "serial_cs: register_serial() at 0x%04lx,"
+ " irq %d failed\n", (u_long) serial.port, serial.irq);
+ return -1;
+ }
+
+ info->line[info->ndev] = line;
+ sprintf(info->node[info->ndev].dev_name, "ttyS%d", line);
+ info->node[info->ndev].major = TTY_MAJOR;
+ info->node[info->ndev].minor = 0x40 + line;
+ if (info->ndev > 0)
+ info->node[info->ndev - 1].next = &info->node[info->ndev];
+ info->ndev++;
+
+ return 0;
+}
+
+/*====================================================================*/
+
+static int
+get_tuple(int fn, client_handle_t handle, tuple_t * tuple, cisparse_t * parse)
+{
+ int i;
+ i = CardServices(fn, handle, tuple);
+ if (i != CS_SUCCESS)
+ return CS_NO_MORE_ITEMS;
+ i = CardServices(GetTupleData, handle, tuple);
+ if (i != CS_SUCCESS)
+ return i;
+ return CardServices(ParseTuple, handle, tuple, parse);
+}
+
+#define first_tuple(a, b, c) get_tuple(GetFirstTuple, a, b, c)
+#define next_tuple(a, b, c) get_tuple(GetNextTuple, a, b, c)
+
+/*====================================================================*/
+
+static int simple_config(dev_link_t * link)
+{
+ static ioaddr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
+ client_handle_t handle = link->handle;
+ serial_info_t *info = link->priv;
+ tuple_t tuple;
+ u_char buf[256];
+ cisparse_t parse;
+ cistpl_cftable_entry_t *cf = &parse.cftable_entry;
+ config_info_t config;
+ int i, j, try;
+
+ /* If the card is already configured, look up the port and irq */
+ i = CardServices(GetConfigurationInfo, handle, &config);
+ if ((i == CS_SUCCESS) && (config.Attributes & CONF_VALID_CLIENT)) {
+ ioaddr_t port = 0;
+ if ((config.BasePort2 != 0) && (config.NumPorts2 == 8)) {
+ port = config.BasePort2;
+ info->slave = 1;
+ } else if ((info->manfid == MANFID_OSITECH) &&
+ (config.NumPorts1 == 0x40)) {
+ port = config.BasePort1 + 0x28;
+ info->slave = 1;
+ }
+ if (info->slave)
+ return setup_serial(info, port, config.AssignedIRQ);
+ }
+ link->conf.Vcc = config.Vcc;
+
+ /* First pass: look for a config entry that looks normal. */
+ tuple.TupleData = (cisdata_t *) buf;
+ tuple.TupleOffset = 0;
+ tuple.TupleDataMax = 255;
+ tuple.Attributes = 0;
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ /* Two tries: without IO aliases, then with aliases */
+ for (try = 0; try < 2; try++) {
+ i = first_tuple(handle, &tuple, &parse);
+ while (i != CS_NO_MORE_ITEMS) {
+ if (i != CS_SUCCESS)
+ goto next_entry;
+ if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM))
+ link->conf.Vpp1 = link->conf.Vpp2 =
+ cf->vpp1.param[CISTPL_POWER_VNOM] / 10000;
+ if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) &&
+ (cf->io.win[0].base != 0)) {
+ link->conf.ConfigIndex = cf->index;
+ link->io.BasePort1 = cf->io.win[0].base;
+ link->io.IOAddrLines = (try == 0) ?
+ 16 : cf->io.flags & CISTPL_IO_LINES_MASK;
+ i =
+ CardServices(RequestIO, link->handle,
+ &link->io);
+ if (i == CS_SUCCESS)
+ goto found_port;
+ }
+ next_entry:
+ i = next_tuple(handle, &tuple, &parse);
+ }
+ }
+
+ /* Second pass: try to find an entry that isn't picky about
+ its base address, then try to grab any standard serial port
+ address, and finally try to get any free port. */
+ i = first_tuple(handle, &tuple, &parse);
+ while (i != CS_NO_MORE_ITEMS) {
+ if ((i == CS_SUCCESS) && (cf->io.nwin > 0) &&
+ ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) {
+ link->conf.ConfigIndex = cf->index;
+ for (j = 0; j < 5; j++) {
+ link->io.BasePort1 = base[j];
+ link->io.IOAddrLines = base[j] ? 16 : 3;
+ i = CardServices(RequestIO, link->handle,
+ &link->io);
+ if (i == CS_SUCCESS)
+ goto found_port;
+ }
+ }
+ i = next_tuple(handle, &tuple, &parse);
+ }
+
+ found_port:
+ if (i != CS_SUCCESS) {
+ printk(KERN_NOTICE
+ "serial_cs: no usable port range found, giving up\n");
+ cs_error(link->handle, RequestIO, i);
+ return -1;
+ }
+
+ i = CardServices(RequestIRQ, link->handle, &link->irq);
+ if (i != CS_SUCCESS) {
+ cs_error(link->handle, RequestIRQ, i);
+ link->irq.AssignedIRQ = 0;
+ }
+ if (info->multi && (info->manfid == MANFID_3COM))
+ link->conf.ConfigIndex &= ~(0x08);
+ i = CardServices(RequestConfiguration, link->handle, &link->conf);
+ if (i != CS_SUCCESS) {
+ cs_error(link->handle, RequestConfiguration, i);
+ return -1;
+ }
+
+ return setup_serial(info, link->io.BasePort1, link->irq.AssignedIRQ);
+}
+
+static int multi_config(dev_link_t * link)
+{
+ client_handle_t handle = link->handle;
+ serial_info_t *info = link->priv;
+ tuple_t tuple;
+ u_char buf[256];
+ cisparse_t parse;
+ cistpl_cftable_entry_t *cf = &parse.cftable_entry;
+ int i, base2 = 0;
+
+ tuple.TupleData = (cisdata_t *) buf;
+ tuple.TupleOffset = 0;
+ tuple.TupleDataMax = 255;
+ tuple.Attributes = 0;
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+
+ /* First, look for a generic full-sized window */
+ link->io.NumPorts1 = info->multi * 8;
+ i = first_tuple(handle, &tuple, &parse);
+ while (i != CS_NO_MORE_ITEMS) {
+ /* The quad port cards have bad CIS's, so just look for a
+ window larger than 8 ports and assume it will be right */
+ if ((i == CS_SUCCESS) && (cf->io.nwin == 1) &&
+ (cf->io.win[0].len > 8)) {
+ link->conf.ConfigIndex = cf->index;
+ link->io.BasePort1 = cf->io.win[0].base;
+ link->io.IOAddrLines =
+ cf->io.flags & CISTPL_IO_LINES_MASK;
+ i = CardServices(RequestIO, link->handle, &link->io);
+ base2 = link->io.BasePort1 + 8;
+ if (i == CS_SUCCESS)
+ break;
+ }
+ i = next_tuple(handle, &tuple, &parse);
+ }
+
+ /* If that didn't work, look for two windows */
+ if (i != CS_SUCCESS) {
+ link->io.NumPorts1 = link->io.NumPorts2 = 8;
+ info->multi = 2;
+ i = first_tuple(handle, &tuple, &parse);
+ while (i != CS_NO_MORE_ITEMS) {
+ if ((i == CS_SUCCESS) && (cf->io.nwin == 2)) {
+ link->conf.ConfigIndex = cf->index;
+ link->io.BasePort1 = cf->io.win[0].base;
+ link->io.BasePort2 = cf->io.win[1].base;
+ link->io.IOAddrLines =
+ cf->io.flags & CISTPL_IO_LINES_MASK;
+ i =
+ CardServices(RequestIO, link->handle,
+ &link->io);
+ base2 = link->io.BasePort2;
+ if (i == CS_SUCCESS)
+ break;
+ }
+ i = next_tuple(handle, &tuple, &parse);
+ }
+ }
+
+ if (i != CS_SUCCESS) {
+ cs_error(link->handle, RequestIO, i);
+ return -1;
+ }
+
+ i = CardServices(RequestIRQ, link->handle, &link->irq);
+ if (i != CS_SUCCESS) {
+ printk(KERN_NOTICE
+ "serial_cs: no usable port range found, giving up\n");
+ cs_error(link->handle, RequestIRQ, i);
+ link->irq.AssignedIRQ = 0;
+ }
+ /* Socket Dual IO: this enables irq's for second port */
+ if (info->multi && (info->manfid == MANFID_SOCKET)) {
+ link->conf.Present |= PRESENT_EXT_STATUS;
+ link->conf.ExtStatus = ESR_REQ_ATTN_ENA;
+ }
+ i = CardServices(RequestConfiguration, link->handle, &link->conf);
+ if (i != CS_SUCCESS) {
+ cs_error(link->handle, RequestConfiguration, i);
+ return -1;
+ }
+
+ setup_serial(info, link->io.BasePort1, link->irq.AssignedIRQ);
+ /* The Nokia cards are not really multiport cards */
+ if (info->manfid == MANFID_NOKIA)
+ return 0;
+ for (i = 0; i < info->multi - 1; i++)
+ setup_serial(info, base2 + (8 * i), link->irq.AssignedIRQ);
+
+ return 0;
+}
+
+/*======================================================================
+
+ serial_config() is scheduled to run after a CARD_INSERTION event
+ is received, to configure the PCMCIA socket, and to make the
+ serial device available to the system.
+
+======================================================================*/
+
+#define CS_CHECK(fn, args...) \
+while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
+
+void serial_config(dev_link_t * link)
+{
+ client_handle_t handle = link->handle;
+ serial_info_t *info = link->priv;
+ tuple_t tuple;
+ u_short buf[128];
+ cisparse_t parse;
+ cistpl_cftable_entry_t *cf = &parse.cftable_entry;
+ int i, last_ret, last_fn;
+
+ DEBUG(0, "serial_config(0x%p)\n", link);
+
+ tuple.TupleData = (cisdata_t *) buf;
+ tuple.TupleOffset = 0;
+ tuple.TupleDataMax = 255;
+ tuple.Attributes = 0;
+ /* Get configuration register information */
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ last_ret = first_tuple(handle, &tuple, &parse);
+ if (last_ret != CS_SUCCESS) {
+ last_fn = ParseTuple;
+ goto cs_failed;
+ }
+ link->conf.ConfigBase = parse.config.base;
+ link->conf.Present = parse.config.rmask[0];
+
+ /* Configure card */
+ link->state |= DEV_CONFIG;
+
+ /* Is this a compliant multifunction card? */
+ tuple.DesiredTuple = CISTPL_LONGLINK_MFC;
+ tuple.Attributes = TUPLE_RETURN_COMMON | TUPLE_RETURN_LINK;
+ info->multi = (first_tuple(handle, &tuple, &parse) == CS_SUCCESS);
+
+ /* Is this a multiport card? */
+ tuple.DesiredTuple = CISTPL_MANFID;
+ if (first_tuple(handle, &tuple, &parse) == CS_SUCCESS) {
+ info->manfid = le16_to_cpu(buf[0]);
+ for (i = 0; i < MULTI_COUNT; i++)
+ if ((info->manfid == multi_id[i].manfid) &&
+ (le16_to_cpu(buf[1]) == multi_id[i].prodid))
+ break;
+ if (i < MULTI_COUNT)
+ info->multi = multi_id[i].multi;
+ }
+
+ /* Another check for dual-serial cards: look for either serial or
+ multifunction cards that ask for appropriate IO port ranges */
+ tuple.DesiredTuple = CISTPL_FUNCID;
+ if ((info->multi == 0) &&
+ ((first_tuple(handle, &tuple, &parse) != CS_SUCCESS) ||
+ (parse.funcid.func == CISTPL_FUNCID_MULTI) ||
+ (parse.funcid.func == CISTPL_FUNCID_SERIAL))) {
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ if (first_tuple(handle, &tuple, &parse) == CS_SUCCESS) {
+ if ((cf->io.nwin == 1) && (cf->io.win[0].len % 8 == 0))
+ info->multi = cf->io.win[0].len >> 3;
+ if ((cf->io.nwin == 2) && (cf->io.win[0].len == 8) &&
+ (cf->io.win[1].len == 8))
+ info->multi = 2;
+ }
+ }
+
+ if (info->multi > 1)
+ multi_config(link);
+ else
+ simple_config(link);
+
+ if (info->ndev == 0)
+ goto failed;
+
+ if (info->manfid == MANFID_IBM) {
+ conf_reg_t reg = { 0, CS_READ, 0x800, 0 };
+ CS_CHECK(AccessConfigurationRegister, link->handle, ®);
+ reg.Action = CS_WRITE;
+ reg.Value = reg.Value | 1;
+ CS_CHECK(AccessConfigurationRegister, link->handle, ®);
+ }
+
+ link->dev = &info->node[0];
+ link->state &= ~DEV_CONFIG_PENDING;
+ return;
+
+ cs_failed:
+ cs_error(link->handle, last_fn, last_ret);
+ failed:
+ do_serial_release(info);
+}
+
+/*======================================================================
+
+ The card status event handler. Mostly, this schedules other
+ stuff to run after an event is received. A CARD_REMOVAL event
+ also sets some flags to discourage the serial drivers from
+ talking to the ports.
+
+======================================================================*/
+
+static int
+serial_event(event_t event, int priority, event_callback_args_t * args)
+{
+ dev_link_t *link = args->client_data;
+ serial_info_t *info = link->priv;
+
+ DEBUG(1, "serial_event(0x%06x)\n", event);
+
+ switch (event) {
+ case CS_EVENT_CARD_REMOVAL:
+ serial_remove(link);
+ break;
+
+ case CS_EVENT_CARD_INSERTION:
+ link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+ serial_config(link);
+ break;
+
+ case CS_EVENT_PM_SUSPEND:
+ link->state |= DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_RESET_PHYSICAL:
+ if ((link->state & DEV_CONFIG) && !info->slave)
+ CardServices(ReleaseConfiguration, link->handle);
+ break;
+
+ case CS_EVENT_PM_RESUME:
+ link->state &= ~DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_CARD_RESET:
+ if (DEV_OK(link) && !info->slave)
+ CardServices(RequestConfiguration, link->handle,
+ &link->conf);
+ break;
+ }
+ return 0;
+}
+
+/*====================================================================*/
+
+static int __init init_serial_cs(void)
+{
+ servinfo_t serv;
+ DEBUG(0, "%s\n", version);
+ CardServices(GetCardServicesInfo, &serv);
+ if (serv.Revision != CS_RELEASE_CODE) {
+ printk(KERN_NOTICE "serial_cs: Card Services release "
+ "does not match!\n");
+ return -1;
+ }
+ register_pccard_driver(&dev_info, &serial_attach, &serial_detach);
+ return 0;
+}
+
+static void __exit exit_serial_cs(void)
+{
+ DEBUG(0, "serial_cs: unloading\n");
+ unregister_pccard_driver(&dev_info);
+ while (dev_list != NULL)
+ serial_detach(dev_list);
+}
+
+module_init(init_serial_cs);
+module_exit(exit_serial_cs);
+
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * linux/drivers/char/serial_8250_pci.c
+ *
+ * Probe module for 8250/16550-type PCI serial ports.
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * Copyright (C) 2001 Russell King, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ * $Id: serial_8250_pci.c,v 1.18 2002/03/10 22:32:08 rmk Exp $
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/serial.h>
+
+/* 2.4.6 compatibility cruft - to be removed with the old serial.c code */
+#define pci_board __pci_board
+#include <linux/serialP.h>
+#undef pci_board
+
+#include <asm/bitops.h>
+#include <asm/byteorder.h>
+#include <asm/serial.h>
+
+#include "serial_8250.h"
+
+
+#ifndef IS_PCI_REGION_IOPORT
+#define IS_PCI_REGION_IOPORT(dev, r) (pci_resource_flags((dev), (r)) & \
+ IORESOURCE_IO)
+#endif
+#ifndef IS_PCI_REGION_IOMEM
+#define IS_PCI_REGION_IOMEM(dev, r) (pci_resource_flags((dev), (r)) & \
+ IORESOURCE_MEM)
+#endif
+#ifndef PCI_IRQ_RESOURCE
+#define PCI_IRQ_RESOURCE(dev, r) ((dev)->irq_resource[r].start)
+#endif
+
+#ifndef pci_get_subvendor
+#define pci_get_subvendor(dev) ((dev)->subsystem_vendor)
+#define pci_get_subdevice(dev) ((dev)->subsystem_device)
+#endif
+
+struct serial_private {
+ unsigned int nr;
+ struct pci_board *board;
+ int line[0];
+};
+
+struct pci_board {
+ int flags;
+ int num_ports;
+ int base_baud;
+ int uart_offset;
+ int reg_shift;
+ int (*init_fn)(struct pci_dev *dev, struct pci_board *board,
+ int enable);
+ int first_uart_offset;
+};
+
+static int
+get_pci_port(struct pci_dev *dev, struct pci_board *board,
+ struct serial_struct *req, int idx)
+{
+ unsigned long port;
+ int base_idx;
+ int max_port;
+ int offset;
+
+ base_idx = SPCI_FL_GET_BASE(board->flags);
+ if (board->flags & SPCI_FL_BASE_TABLE)
+ base_idx += idx;
+
+ if (board->flags & SPCI_FL_REGION_SZ_CAP) {
+ max_port = pci_resource_len(dev, base_idx) / 8;
+ if (idx >= max_port)
+ return 1;
+ }
+
+ offset = board->first_uart_offset;
+
+ /*
+ * Timedia/SUNIX uses a mixture of BARs and offsets
+ * Ugh, this is ugly as all hell --- TYT
+ */
+ if (dev->vendor == PCI_VENDOR_ID_TIMEDIA)
+ switch(idx) {
+ case 0:
+ base_idx = 0;
+ break;
+ case 1:
+ base_idx = 0;
+ offset = 8;
+ break;
+ case 2:
+ base_idx = 1;
+ break;
+ case 3:
+ base_idx = 1;
+ offset = 8;
+ break;
+ case 4: /* BAR 2 */
+ case 5: /* BAR 3 */
+ case 6: /* BAR 4 */
+ case 7: /* BAR 5 */
+ base_idx = idx - 2;
+ }
+
+ /* AFAVLAB uses a different mixture of BARs and offsets */
+ /* Not that ugly ;) -- HW */
+ if (dev->vendor == PCI_VENDOR_ID_AFAVLAB && idx >= 4) {
+ base_idx = 4;
+ offset = (idx - 4) * 8;
+ }
+
+ /* Some Titan cards are also a little weird */
+ if (dev->vendor == PCI_VENDOR_ID_TITAN &&
+ (dev->device == PCI_DEVICE_ID_TITAN_400L ||
+ dev->device == PCI_DEVICE_ID_TITAN_800L)) {
+ switch (idx) {
+ case 0: base_idx = 1;
+ break;
+ case 1: base_idx = 2;
+ break;
+ default:
+ base_idx = 4;
+ offset = 8 * (idx - 2);
+ }
+ }
+
+ port = pci_resource_start(dev, base_idx) + offset;
+
+ if ((board->flags & SPCI_FL_BASE_TABLE) == 0)
+ port += idx * (board->uart_offset ? board->uart_offset : 8);
+
+ if (IS_PCI_REGION_IOPORT(dev, base_idx)) {
+ req->port = port;
+ if (HIGH_BITS_OFFSET)
+ req->port_high = port >> HIGH_BITS_OFFSET;
+ else
+ req->port_high = 0;
+ return 0;
+ }
+ req->io_type = SERIAL_IO_MEM;
+ req->iomem_base = ioremap(port, board->uart_offset);
+ if (req->iomem_base == NULL)
+ return -ENOMEM;
+ req->iomem_reg_shift = board->reg_shift;
+ req->port = 0;
+ return 0;
+}
+
+static _INLINE_ int
+get_pci_irq(struct pci_dev *dev, struct pci_board *board, int idx)
+{
+ int base_idx;
+
+ if ((board->flags & SPCI_FL_IRQRESOURCE) == 0)
+ return dev->irq;
+
+ base_idx = SPCI_FL_GET_IRQBASE(board->flags);
+ if (board->flags & SPCI_FL_IRQ_TABLE)
+ base_idx += idx;
+
+ return PCI_IRQ_RESOURCE(dev, base_idx);
+}
+
+/*
+ * Some PCI serial cards using the PLX 9050 PCI interface chip require
+ * that the card interrupt be explicitly enabled or disabled. This
+ * seems to be mainly needed on card using the PLX which also use I/O
+ * mapped memory.
+ */
+static int __devinit
+pci_plx9050_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+{
+ u8 *p, irq_config = 0;
+
+ if (enable) {
+ irq_config = 0x41;
+ if (dev->vendor == PCI_VENDOR_ID_PANACOM)
+ irq_config = 0x43;
+ if ((dev->vendor == PCI_VENDOR_ID_PLX) &&
+ (dev->device == PCI_DEVICE_ID_PLX_ROMULUS)) {
+ /*
+ * As the megawolf cards have the int pins active
+ * high, and have 2 UART chips, both ints must be
+ * enabled on the 9050. Also, the UARTS are set in
+ * 16450 mode by default, so we have to enable the
+ * 16C950 'enhanced' mode so that we can use the
+ * deep FIFOs
+ */
+ irq_config = 0x5b;
+ }
+ }
+
+ /*
+ * enable/disable interrupts
+ */
+ p = ioremap(pci_resource_start(dev, 0), 0x80);
+ if (p == NULL)
+ return -ENOMEM;
+ writel(irq_config, (unsigned long)p + 0x4c);
+
+ /*
+ * Read the register back to ensure that it took effect.
+ */
+ readl((unsigned long)p + 0x4c);
+ iounmap(p);
+
+ return 0;
+}
+
+
+/*
+ * SIIG serial cards have an PCI interface chip which also controls
+ * the UART clocking frequency. Each UART can be clocked independently
+ * (except cards equiped with 4 UARTs) and initial clocking settings
+ * are stored in the EEPROM chip. It can cause problems because this
+ * version of serial driver doesn't support differently clocked UART's
+ * on single PCI card. To prevent this, initialization functions set
+ * high frequency clocking for all UART's on given card. It is safe (I
+ * hope) because it doesn't touch EEPROM settings to prevent conflicts
+ * with other OSes (like M$ DOS).
+ *
+ * SIIG support added by Andrey Panin <pazke@mail.tp.ru>, 10/1999
+ *
+ * There is two family of SIIG serial cards with different PCI
+ * interface chip and different configuration methods:
+ * - 10x cards have control registers in IO and/or memory space;
+ * - 20x cards have control registers in standard PCI configuration space.
+ */
+
+#define PCI_DEVICE_ID_SIIG_1S_10x (PCI_DEVICE_ID_SIIG_1S_10x_550 & 0xfffc)
+#define PCI_DEVICE_ID_SIIG_2S_10x (PCI_DEVICE_ID_SIIG_2S_10x_550 & 0xfff8)
+
+static int __devinit
+pci_siig10x_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+{
+ u16 data, *p;
+
+ if (!enable)
+ return 0;
+
+ switch (dev->device & 0xfff8) {
+ case PCI_DEVICE_ID_SIIG_1S_10x: /* 1S */
+ data = 0xffdf;
+ break;
+ case PCI_DEVICE_ID_SIIG_2S_10x: /* 2S, 2S1P */
+ data = 0xf7ff;
+ break;
+ default: /* 1S1P, 4S */
+ data = 0xfffb;
+ break;
+ }
+
+ p = ioremap(pci_resource_start(dev, 0), 0x80);
+ if (p == NULL)
+ return -ENOMEM;
+
+ writew(readw((unsigned long) p + 0x28) & data, (unsigned long) p + 0x28);
+ iounmap(p);
+ return 0;
+}
+
+#define PCI_DEVICE_ID_SIIG_2S_20x (PCI_DEVICE_ID_SIIG_2S_20x_550 & 0xfffc)
+#define PCI_DEVICE_ID_SIIG_2S1P_20x (PCI_DEVICE_ID_SIIG_2S1P_20x_550 & 0xfffc)
+
+static int __devinit
+pci_siig20x_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+{
+ u8 data;
+
+ if (!enable)
+ return 0;
+
+ /* Change clock frequency for the first UART. */
+ pci_read_config_byte(dev, 0x6f, &data);
+ pci_write_config_byte(dev, 0x6f, data & 0xef);
+
+ /* If this card has 2 UART, we have to do the same with second UART. */
+ if (((dev->device & 0xfffc) == PCI_DEVICE_ID_SIIG_2S_20x) ||
+ ((dev->device & 0xfffc) == PCI_DEVICE_ID_SIIG_2S1P_20x)) {
+ pci_read_config_byte(dev, 0x73, &data);
+ pci_write_config_byte(dev, 0x73, data & 0xef);
+ }
+ return 0;
+}
+
+/* Added for EKF Intel i960 serial boards */
+static int __devinit
+pci_inteli960ni_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+{
+ unsigned long oldval;
+
+ if (!(pci_get_subdevice(dev) & 0x1000))
+ return -ENODEV;
+
+ if (!enable) /* is there something to deinit? */
+ return 0;
+
+ /* is firmware started? */
+ pci_read_config_dword(dev, 0x44, (void*) &oldval);
+ if (oldval == 0x00001000L) { /* RESET value */
+ printk(KERN_DEBUG "Local i960 firmware missing");
+ return -ENODEV;
+ }
+ return 0;
+}
+
+/*
+ * Timedia has an explosion of boards, and to avoid the PCI table from
+ * growing *huge*, we use this function to collapse some 70 entries
+ * in the PCI table into one, for sanity's and compactness's sake.
+ */
+static unsigned short timedia_single_port[] = {
+ 0x4025, 0x4027, 0x4028, 0x5025, 0x5027, 0
+};
+
+static unsigned short timedia_dual_port[] = {
+ 0x0002, 0x4036, 0x4037, 0x4038, 0x4078, 0x4079, 0x4085,
+ 0x4088, 0x4089, 0x5037, 0x5078, 0x5079, 0x5085, 0x6079,
+ 0x7079, 0x8079, 0x8137, 0x8138, 0x8237, 0x8238, 0x9079,
+ 0x9137, 0x9138, 0x9237, 0x9238, 0xA079, 0xB079, 0xC079,
+ 0xD079, 0
+};
+
+static unsigned short timedia_quad_port[] = {
+ 0x4055, 0x4056, 0x4095, 0x4096, 0x5056, 0x8156, 0x8157,
+ 0x8256, 0x8257, 0x9056, 0x9156, 0x9157, 0x9158, 0x9159,
+ 0x9256, 0x9257, 0xA056, 0xA157, 0xA158, 0xA159, 0xB056,
+ 0xB157, 0
+};
+
+static unsigned short timedia_eight_port[] = {
+ 0x4065, 0x4066, 0x5065, 0x5066, 0x8166, 0x9066, 0x9166,
+ 0x9167, 0x9168, 0xA066, 0xA167, 0xA168, 0
+};
+
+static struct timedia_struct {
+ int num;
+ unsigned short *ids;
+} timedia_data[] = {
+ { 1, timedia_single_port },
+ { 2, timedia_dual_port },
+ { 4, timedia_quad_port },
+ { 8, timedia_eight_port },
+ { 0, 0 }
+};
+
+static int __devinit
+pci_timedia_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+{
+ int i, j;
+ unsigned short *ids;
+
+ if (!enable)
+ return 0;
+
+ for (i = 0; timedia_data[i].num; i++) {
+ ids = timedia_data[i].ids;
+ for (j = 0; ids[j]; j++) {
+ if (pci_get_subdevice(dev) == ids[j]) {
+ board->num_ports = timedia_data[i].num;
+ return 0;
+ }
+ }
+ }
+ return 0;
+}
+
+static int __devinit
+pci_xircom_fn(struct pci_dev *dev, struct pci_board *board, int enable)
+{
+ __set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(HZ/10);
+ return 0;
+}
+
+/*
+ * This is the configuration table for all of the PCI serial boards
+ * which we support. It is directly indexed by the pci_board_num_t enum
+ * value, which is encoded in the pci_device_id PCI probe table's
+ * driver_data member.
+ */
+enum pci_board_num_t {
+ pbn_b0_1_115200,
+ pbn_default = 0,
+
+ pbn_b0_2_115200,
+ pbn_b0_4_115200,
+
+ pbn_b0_1_921600,
+ pbn_b0_2_921600,
+ pbn_b0_4_921600,
+
+ pbn_b0_bt_1_115200,
+ pbn_b0_bt_2_115200,
+ pbn_b0_bt_8_115200,
+ pbn_b0_bt_1_460800,
+ pbn_b0_bt_2_460800,
+
+ pbn_b1_1_115200,
+ pbn_b1_2_115200,
+ pbn_b1_4_115200,
+ pbn_b1_8_115200,
+
+ pbn_b1_2_921600,
+ pbn_b1_4_921600,
+ pbn_b1_8_921600,
+
+ pbn_b1_2_1382400,
+ pbn_b1_4_1382400,
+ pbn_b1_8_1382400,
+
+ pbn_b2_8_115200,
+ pbn_b2_4_460800,
+ pbn_b2_8_460800,
+ pbn_b2_16_460800,
+ pbn_b2_4_921600,
+ pbn_b2_8_921600,
+
+ pbn_b2_bt_1_115200,
+ pbn_b2_bt_2_115200,
+ pbn_b2_bt_4_115200,
+ pbn_b2_bt_2_921600,
+
+ pbn_panacom,
+ pbn_panacom2,
+ pbn_panacom4,
+ pbn_plx_romulus,
+ pbn_oxsemi,
+ pbn_timedia,
+ pbn_intel_i960,
+ pbn_sgi_ioc3,
+ pbn_nec_nile4,
+
+ pbn_dci_pccom4,
+ pbn_dci_pccom8,
+
+ pbn_xircom_combo,
+
+ pbn_siig10x_0,
+ pbn_siig10x_1,
+ pbn_siig10x_2,
+ pbn_siig10x_4,
+ pbn_siig20x_0,
+ pbn_siig20x_2,
+ pbn_siig20x_4,
+
+ pbn_computone_4,
+ pbn_computone_6,
+ pbn_computone_8,
+};
+
+static struct pci_board pci_boards[] __devinitdata = {
+ /*
+ * PCI Flags, Number of Ports, Base (Maximum) Baud Rate,
+ * Offset to get to next UART's registers,
+ * Register shift to use for memory-mapped I/O,
+ * Initialization function, first UART offset
+ */
+
+ /* Generic serial board, pbn_b0_1_115200, pbn_default */
+ { SPCI_FL_BASE0, 1, 115200 }, /* pbn_b0_1_115200,
+ pbn_default */
+
+ { SPCI_FL_BASE0, 2, 115200 }, /* pbn_b0_2_115200 */
+ { SPCI_FL_BASE0, 4, 115200 }, /* pbn_b0_4_115200 */
+
+ { SPCI_FL_BASE0, 1, 921600 }, /* pbn_b0_1_921600 */
+ { SPCI_FL_BASE0, 2, 921600 }, /* pbn_b0_2_921600 */
+ { SPCI_FL_BASE0, 4, 921600 }, /* pbn_b0_4_921600 */
+
+ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 115200 }, /* pbn_b0_bt_1_115200 */
+ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 115200 }, /* pbn_b0_bt_2_115200 */
+ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 8, 115200 }, /* pbn_b0_bt_8_115200 */
+ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 1, 460800 }, /* pbn_b0_bt_1_460800 */
+ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 460800 }, /* pbn_b0_bt_2_460800 */
+
+ { SPCI_FL_BASE1, 1, 115200 }, /* pbn_b1_1_115200 */
+ { SPCI_FL_BASE1, 2, 115200 }, /* pbn_b1_2_115200 */
+ { SPCI_FL_BASE1, 4, 115200 }, /* pbn_b1_4_115200 */
+ { SPCI_FL_BASE1, 8, 115200 }, /* pbn_b1_8_115200 */
+
+ { SPCI_FL_BASE1, 2, 921600 }, /* pbn_b1_2_921600 */
+ { SPCI_FL_BASE1, 4, 921600 }, /* pbn_b1_4_921600 */
+ { SPCI_FL_BASE1, 8, 921600 }, /* pbn_b1_8_921600 */
+
+ { SPCI_FL_BASE1, 2, 1382400 }, /* pbn_b1_2_1382400 */
+ { SPCI_FL_BASE1, 4, 1382400 }, /* pbn_b1_4_1382400 */
+ { SPCI_FL_BASE1, 8, 1382400 }, /* pbn_b1_8_1382400 */
+
+ { SPCI_FL_BASE2, 8, 115200 }, /* pbn_b2_8_115200 */
+ { SPCI_FL_BASE2, 4, 460800 }, /* pbn_b2_4_460800 */
+ { SPCI_FL_BASE2, 8, 460800 }, /* pbn_b2_8_460800 */
+ { SPCI_FL_BASE2, 16, 460800 }, /* pbn_b2_16_460800 */
+ { SPCI_FL_BASE2, 4, 921600 }, /* pbn_b2_4_921600 */
+ { SPCI_FL_BASE2, 8, 921600 }, /* pbn_b2_8_921600 */
+
+ { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 1, 115200 }, /* pbn_b2_bt_1_115200 */
+ { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 2, 115200 }, /* pbn_b2_bt_2_115200 */
+ { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 4, 115200 }, /* pbn_b2_bt_4_115200 */
+ { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 2, 921600 }, /* pbn_b2_bt_2_921600 */
+
+ { SPCI_FL_BASE2, 2, 921600, /* IOMEM */ /* pbn_panacom */
+ 0x400, 7, pci_plx9050_fn },
+ { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 2, 921600, /* pbn_panacom2 */
+ 0x400, 7, pci_plx9050_fn },
+ { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 4, 921600, /* pbn_panacom4 */
+ 0x400, 7, pci_plx9050_fn },
+ { SPCI_FL_BASE2, 4, 921600, /* pbn_plx_romulus */
+ 0x20, 2, pci_plx9050_fn, 0x03 },
+ /* This board uses the size of PCI Base region 0 to
+ * signal now many ports are available */
+ { SPCI_FL_BASE0 | SPCI_FL_REGION_SZ_CAP, 32, 115200 }, /* pbn_oxsemi */
+ { SPCI_FL_BASE_TABLE, 1, 921600, /* pbn_timedia */
+ 0, 0, pci_timedia_fn },
+ /* EKF addition for i960 Boards form EKF with serial port */
+ { SPCI_FL_BASE0, 32, 921600, /* max 256 ports */ /* pbn_intel_i960 */
+ 8<<2, 2, pci_inteli960ni_fn, 0x10000},
+ { SPCI_FL_BASE0 | SPCI_FL_IRQRESOURCE, /* pbn_sgi_ioc3 */
+ 1, 458333, 0, 0, 0, 0x20178 },
+
+ /*
+ * NEC Vrc-5074 (Nile 4) builtin UART.
+ */
+ { SPCI_FL_BASE0, 1, 520833, /* pbn_nec_nile4 */
+ 64, 3, NULL, 0x300 },
+
+ { SPCI_FL_BASE3, 4, 115200, 8 }, /* pbn_dci_pccom4 */
+ { SPCI_FL_BASE3, 8, 115200, 8 }, /* pbn_dci_pccom8 */
+
+ { SPCI_FL_BASE0, 1, 115200, /* pbn_xircom_combo */
+ 0, 0, pci_xircom_fn },
+
+ { SPCI_FL_BASE2, 1, 460800, /* pbn_siig10x_0 */
+ 0, 0, pci_siig10x_fn },
+ { SPCI_FL_BASE2, 1, 921600, /* pbn_siig10x_1 */
+ 0, 0, pci_siig10x_fn },
+ { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 2, 921600, /* pbn_siig10x_2 */
+ 0, 0, pci_siig10x_fn },
+ { SPCI_FL_BASE2 | SPCI_FL_BASE_TABLE, 4, 921600, /* pbn_siig10x_4 */
+ 0, 0, pci_siig10x_fn },
+ { SPCI_FL_BASE0, 1, 921600, /* pbn_siix20x_0 */
+ 0, 0, pci_siig20x_fn },
+ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 2, 921600, /* pbn_siix20x_2 */
+ 0, 0, pci_siig20x_fn },
+ { SPCI_FL_BASE0 | SPCI_FL_BASE_TABLE, 4, 921600, /* pbn_siix20x_4 */
+ 0, 0, pci_siig20x_fn },
+
+ { SPCI_FL_BASE0, 4, 921600, /* IOMEM */ /* pbn_computone_4 */
+ 0x40, 2, NULL, 0x200 },
+ { SPCI_FL_BASE0, 6, 921600, /* IOMEM */ /* pbn_computone_6 */
+ 0x40, 2, NULL, 0x200 },
+ { SPCI_FL_BASE0, 8, 921600, /* IOMEM */ /* pbn_computone_8 */
+ 0x40, 2, NULL, 0x200 },
+};
+
+/*
+ * Given a complete unknown PCI device, try to use some heuristics to
+ * guess what the configuration might be, based on the pitiful PCI
+ * serial specs. Returns 0 on success, 1 on failure.
+ */
+static int __devinit
+serial_pci_guess_board(struct pci_dev *dev, struct pci_board *board)
+{
+ int num_iomem = 0, num_port = 0, first_port = -1;
+ int i;
+
+ /*
+ * If it is not a communications device or the programming
+ * interface is greater than 6, give up.
+ *
+ * (Should we try to make guesses for multiport serial devices
+ * later?)
+ */
+ if ((((dev->class >> 8) != PCI_CLASS_COMMUNICATION_SERIAL) &&
+ ((dev->class >> 8) != PCI_CLASS_COMMUNICATION_MODEM)) ||
+ (dev->class & 0xff) > 6)
+ return 1;
+
+ for (i = 0; i < 6; i++) {
+ if (IS_PCI_REGION_IOPORT(dev, i)) {
+ num_port++;
+ if (first_port == -1)
+ first_port = i;
+ }
+ if (IS_PCI_REGION_IOMEM(dev, i))
+ num_iomem++;
+ }
+
+ /*
+ * If there is 1 or 0 iomem regions, and exactly one port, use
+ * it.
+ */
+ if (num_iomem <= 1 && num_port == 1) {
+ board->flags = first_port;
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * return an error code to refuse.
+ *
+ * serial_struct is 60 bytes.
+ */
+static int __devinit pci_init_one(struct pci_dev *dev, const struct pci_device_id *ent)
+{
+ struct serial_private *priv;
+ struct pci_board *board, tmp;
+ struct serial_struct serial_req;
+ int base_baud, rc, k;
+
+ if (ent->driver_data >= ARRAY_SIZE(pci_boards)) {
+ printk(KERN_ERR "pci_init_one: invalid driver_data: %ld\n",
+ ent->driver_data);
+ return -EINVAL;
+ }
+
+ board = &pci_boards[ent->driver_data];
+
+ rc = pci_enable_device(dev);
+ if (rc)
+ return rc;
+
+ if (ent->driver_data == pbn_default &&
+ serial_pci_guess_board(dev, board))
+ return -ENODEV;
+ else if (serial_pci_guess_board(dev, &tmp) == 0) {
+ printk(KERN_INFO "Redundant entry in serial pci_table. "
+ "Please send the output of\n"
+ "lspci -vv, this message (%d,%d,%d,%d)\n"
+ "and the manufacturer and name of "
+ "serial board or modem board\n"
+ "to serial-pci-info@lists.sourceforge.net.\n",
+ dev->vendor, dev->device,
+ pci_get_subvendor(dev), pci_get_subdevice(dev));
+ }
+
+ priv = kmalloc(sizeof(struct serial_private) +
+ sizeof(unsigned int) * board->num_ports,
+ GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ /*
+ * Run the initialization function, if any
+ */
+ if (board->init_fn) {
+ rc = board->init_fn(dev, board, 1);
+ if (rc != 0) {
+ kfree(priv);
+ return rc;
+ }
+ }
+
+ base_baud = board->base_baud;
+ if (!base_baud)
+ base_baud = BASE_BAUD;
+ memset(&serial_req, 0, sizeof(serial_req));
+ for (k = 0; k < board->num_ports; k++) {
+ serial_req.irq = get_pci_irq(dev, board, k);
+ if (get_pci_port(dev, board, &serial_req, k))
+ break;
+#ifdef SERIAL_DEBUG_PCI
+ printk("Setup PCI/PNP port: port %x, irq %d, type %d\n",
+ serial_req.port, serial_req.irq, serial_req.io_type);
+#endif
+ serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;
+ serial_req.baud_base = base_baud;
+
+ priv->line[k] = register_serial(&serial_req);
+ if (priv->line[k] < 0)
+ break;
+ }
+
+ priv->board = board;
+ priv->nr = k;
+
+ pci_set_drvdata(dev, priv);
+
+ return 0;
+}
+
+static void __devexit pci_remove_one(struct pci_dev *dev)
+{
+ struct serial_private *priv = pci_get_drvdata(dev);
+ int i;
+
+ pci_set_drvdata(dev, NULL);
+
+ if (priv) {
+ for (i = 0; i < priv->nr; i++)
+ unregister_serial(priv->line[i]);
+
+ priv->board->init_fn(dev, priv->board, 0);
+
+ pci_disable_device(dev);
+
+ kfree(priv);
+ }
+}
+
+static struct pci_device_id serial_pci_tbl[] __devinitdata = {
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_232, 0, 0,
+ pbn_b1_8_1382400 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_232, 0, 0,
+ pbn_b1_4_1382400 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V960,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_232, 0, 0,
+ pbn_b1_2_1382400 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_232, 0, 0,
+ pbn_b1_8_1382400 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_232, 0, 0,
+ pbn_b1_4_1382400 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_232, 0, 0,
+ pbn_b1_2_1382400 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_485, 0, 0,
+ pbn_b1_8_921600 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_485_4_4, 0, 0,
+ pbn_b1_8_921600 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_485, 0, 0,
+ pbn_b1_4_921600 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH4_485_2_2, 0, 0,
+ pbn_b1_4_921600 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH2_485, 0, 0,
+ pbn_b1_2_921600 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH8_485_2_6, 0, 0,
+ pbn_b1_8_921600 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH081101V1, 0, 0,
+ pbn_b1_8_921600 },
+ { PCI_VENDOR_ID_V3, PCI_DEVICE_ID_V3_V351,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_BH041101V1, 0, 0,
+ pbn_b1_4_921600 },
+
+ { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_U530,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_bt_1_115200 },
+ { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM2,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_bt_2_115200 },
+ { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM422,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_bt_4_115200 },
+ { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM232,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_bt_2_115200 },
+ { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_COMM4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_bt_4_115200 },
+ { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_COMM8,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_8_115200 },
+
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_GTEK_SERIAL2,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_bt_2_115200 },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_SPCOM200,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_bt_2_921600 },
+ /* VScom SPCOM800, from sl@s.pl */
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_SPCOM800,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_8_921600 },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_1077,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_4_921600 },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+ PCI_SUBVENDOR_ID_KEYSPAN,
+ PCI_SUBDEVICE_ID_KEYSPAN_SX2, 0, 0,
+ pbn_panacom },
+ { PCI_VENDOR_ID_PANACOM, PCI_DEVICE_ID_PANACOM_QUADMODEM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_panacom4 },
+ { PCI_VENDOR_ID_PANACOM, PCI_DEVICE_ID_PANACOM_DUALMODEM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_panacom2 },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+ PCI_SUBVENDOR_ID_CHASE_PCIFAST,
+ PCI_SUBDEVICE_ID_CHASE_PCIFAST4, 0, 0,
+ pbn_b2_4_460800 },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+ PCI_SUBVENDOR_ID_CHASE_PCIFAST,
+ PCI_SUBDEVICE_ID_CHASE_PCIFAST8, 0, 0,
+ pbn_b2_8_460800 },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+ PCI_SUBVENDOR_ID_CHASE_PCIFAST,
+ PCI_SUBDEVICE_ID_CHASE_PCIFAST16, 0, 0,
+ pbn_b2_16_460800 },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+ PCI_SUBVENDOR_ID_CHASE_PCIFAST,
+ PCI_SUBDEVICE_ID_CHASE_PCIFAST16FMC, 0, 0,
+ pbn_b2_16_460800 },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+ PCI_SUBVENDOR_ID_CHASE_PCIRAS,
+ PCI_SUBDEVICE_ID_CHASE_PCIRAS4, 0, 0,
+ pbn_b2_4_460800 },
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+ PCI_SUBVENDOR_ID_CHASE_PCIRAS,
+ PCI_SUBDEVICE_ID_CHASE_PCIRAS8, 0, 0,
+ pbn_b2_8_460800 },
+ /* Megawolf Romulus PCI Serial Card, from Mike Hudson */
+ /* (Exoray@isys.ca) */
+ { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_ROMULUS,
+ 0x10b5, 0x106a, 0, 0,
+ pbn_plx_romulus },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_QSC100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_4_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_DSC100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_2_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_ESC100D,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_8_115200 },
+ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_ESC100M,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_8_115200 },
+ { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_OXSEMI_16PCI954,
+ PCI_VENDOR_ID_SPECIALIX, PCI_SUBDEVICE_ID_SPECIALIX_SPEED4, 0, 0,
+ pbn_b0_4_921600 },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_4_115200 },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI952,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_2_115200 },
+
+ /* Digitan DS560-558, from jimd@esoft.com */
+ { PCI_VENDOR_ID_ATT, PCI_DEVICE_ID_ATT_VENUS_MODEM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b1_1_115200 },
+
+ /* 3Com US Robotics 56k Voice Internal PCI model 5610 */
+ { PCI_VENDOR_ID_USR, 0x1008,
+ PCI_ANY_ID, PCI_ANY_ID, },
+
+ /* Titan Electronic cards */
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_1_921600 },
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_2_921600 },
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_400,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_4_921600 },
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_800B,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_4_921600 },
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_100L,
+ PCI_ANY_ID, PCI_ANY_ID,
+ SPCI_FL_BASE1, 1, 921600 },
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200L,
+ PCI_ANY_ID, PCI_ANY_ID,
+ SPCI_FL_BASE1 | SPCI_FL_BASE_TABLE, 2, 921600 },
+ /* The 400L and 800L have a custom hack in get_pci_port */
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_400L,
+ PCI_ANY_ID, PCI_ANY_ID,
+ SPCI_FL_BASE_TABLE, 4, 921600 },
+ { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_800L,
+ PCI_ANY_ID, PCI_ANY_ID,
+ SPCI_FL_BASE_TABLE, 8, 921600 },
+
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_10x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_10x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_10x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_1 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_1 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_1 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_10x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_10x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_10x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_10x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_4 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_10x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_4 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_10x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig10x_4 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_20x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_20x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S_20x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_0 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_20x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_20x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S_20x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_2 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_20x_550,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_4 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_20x_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_4 },
+ { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_4S_20x_850,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_siig20x_4 },
+
+ /* Computone devices submitted by Doug McNash dmcnash@computone.com */
+ { PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_PG,
+ PCI_SUBVENDOR_ID_COMPUTONE, PCI_SUBDEVICE_ID_COMPUTONE_PG4,
+ 0, 0, pbn_computone_4 },
+ { PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_PG,
+ PCI_SUBVENDOR_ID_COMPUTONE, PCI_SUBDEVICE_ID_COMPUTONE_PG8,
+ 0, 0, pbn_computone_8 },
+ { PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_PG,
+ PCI_SUBVENDOR_ID_COMPUTONE, PCI_SUBDEVICE_ID_COMPUTONE_PG6,
+ 0, 0, pbn_computone_6 },
+
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI95N,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_oxsemi },
+ { PCI_VENDOR_ID_TIMEDIA, PCI_DEVICE_ID_TIMEDIA_1889,
+ PCI_VENDOR_ID_TIMEDIA, PCI_ANY_ID, 0, 0, pbn_timedia },
+
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_DSERIAL,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_2_115200 },
+ /* AFAVLAB serial card, from Harald Welte <laforge@gnumonks.org> */
+ { PCI_VENDOR_ID_AFAVLAB, PCI_DEVICE_ID_AFAVLAB_P028,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_8_115200 },
+
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_QUATRO_A,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_2_115200 },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_QUATRO_B,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_2_115200 },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_PORT_PLUS,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_2_460800 },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_QUAD_A,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_2_460800 },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_QUAD_B,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_2_460800 },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_SSERIAL,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_1_115200 },
+ { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_PORT_650,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_bt_1_460800 },
+
+ /* RAStel 2 port modem, gerg@moreton.com.au */
+ { PCI_VENDOR_ID_MORETON, PCI_DEVICE_ID_RASTEL_2PORT,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_bt_2_115200 },
+
+ /* EKF addition for i960 Boards form EKF with serial port */
+ { PCI_VENDOR_ID_INTEL, 0x1960,
+ 0xE4BF, PCI_ANY_ID, 0, 0,
+ pbn_intel_i960 },
+
+ /* Xircom Cardbus/Ethernet combos */
+ { PCI_VENDOR_ID_XIRCOM, PCI_DEVICE_ID_XIRCOM_X3201_MDM,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_xircom_combo },
+
+ /*
+ * Untested PCI modems, sent in from various folks...
+ */
+
+ /* Elsa Model 56K PCI Modem, from Andreas Rath <arh@01019freenet.de> */
+ { PCI_VENDOR_ID_ROCKWELL, 0x1004,
+ 0x1048, 0x1500, 0, 0,
+ pbn_b1_1_115200 },
+
+ { PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC3,
+ 0xFF00, 0, 0, 0,
+ pbn_sgi_ioc3 },
+
+ /*
+ * NEC Vrc-5074 (Nile 4) builtin UART.
+ */
+ { PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_NILE4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_nec_nile4 },
+
+ { PCI_VENDOR_ID_DCI, PCI_DEVICE_ID_DCI_PCCOM4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_dci_pccom4 },
+ { PCI_VENDOR_ID_DCI, PCI_DEVICE_ID_DCI_PCCOM8,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_dci_pccom8 },
+
+ { PCI_ANY_ID, PCI_ANY_ID,
+ PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_SERIAL << 8,
+ 0xffff00, },
+ { PCI_ANY_ID, PCI_ANY_ID,
+ PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_MODEM << 8,
+ 0xffff00, },
+ { PCI_ANY_ID, PCI_ANY_ID,
+ PCI_ANY_ID, PCI_ANY_ID,
+ PCI_CLASS_COMMUNICATION_MULTISERIAL << 8,
+ 0xffff00, },
+ { 0, }
+};
+
+#ifndef __devexit_p
+#if defined(MODULE) || defined(CONFIG_HOTPLUG)
+#define __devexit_p(x) x
+#else
+#define __devexit_p(x) NULL
+#endif
+#endif
+
+static struct pci_driver serial_pci_driver = {
+ name: "serial",
+ probe: pci_init_one,
+ remove: __devexit_p(pci_remove_one),
+ id_table: serial_pci_tbl,
+};
+
+static int __init serial8250_pci_init(void)
+{
+ return pci_module_init(&serial_pci_driver);
+}
+
+static void __exit serial8250_pci_exit(void)
+{
+ pci_unregister_driver(&serial_pci_driver);
+}
+
+module_init(serial8250_pci_init);
+module_exit(serial8250_pci_exit);
+
+EXPORT_NO_SYMBOLS;
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Generic 8250/16x50 PCI serial probe module");
+MODULE_DEVICE_TABLE(pci, serial_pci_tbl);
--- /dev/null
+/*
+ * linux/drivers/char/serial_8250_pnp.c
+ *
+ * Probe module for 8250/16550-type ISAPNP serial ports.
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * Copyright (C) 2001 Russell King, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ * $Id: serial_8250_pnp.c,v 1.9 2002/02/18 19:20:29 rmk Exp $
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/isapnp.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/serial.h>
+#include <linux/serialP.h>
+
+#include <asm/bitops.h>
+#include <asm/byteorder.h>
+#include <asm/serial.h>
+
+#include "serial_8250.h"
+
+struct pnpbios_device_id
+{
+ char id[8];
+ unsigned long driver_data;
+};
+
+static const struct pnpbios_device_id pnp_dev_table[] = {
+ /* Archtek America Corp. */
+ /* Archtek SmartLink Modem 3334BT Plug & Play */
+ { "AAC000F", 0 },
+ /* Anchor Datacomm BV */
+ /* SXPro 144 External Data Fax Modem Plug & Play */
+ { "ADC0001", 0 },
+ /* SXPro 288 External Data Fax Modem Plug & Play */
+ { "ADC0002", 0 },
+ /* Rockwell 56K ACF II Fax+Data+Voice Modem */
+ { "AKY1021", SPCI_FL_NO_SHIRQ },
+ /* AZT3005 PnP SOUND DEVICE */
+ { "AZT4001", 0 },
+ /* Best Data Products Inc. Smart One 336F PnP Modem */
+ { "BDP3336", 0 },
+ /* Boca Research */
+ /* Boca Complete Ofc Communicator 14.4 Data-FAX */
+ { "BRI0A49", 0 },
+ /* Boca Research 33,600 ACF Modem */
+ { "BRI1400", 0 },
+ /* Boca 33.6 Kbps Internal FD34FSVD */
+ { "BRI3400", 0 },
+ /* Boca 33.6 Kbps Internal FD34FSVD */
+ { "BRI0A49", 0 },
+ /* Best Data Products Inc. Smart One 336F PnP Modem */
+ { "BDP3336", 0 },
+ /* Computer Peripherals Inc */
+ /* EuroViVa CommCenter-33.6 SP PnP */
+ { "CPI4050", 0 },
+ /* Creative Labs */
+ /* Creative Labs Phone Blaster 28.8 DSVD PnP Voice */
+ { "CTL3001", 0 },
+ /* Creative Labs Modem Blaster 28.8 DSVD PnP Voice */
+ { "CTL3011", 0 },
+ /* Creative */
+ /* Creative Modem Blaster Flash56 DI5601-1 */
+ { "DMB1032", 0 },
+ /* Creative Modem Blaster V.90 DI5660 */
+ { "DMB2001", 0 },
+ /* FUJITSU */
+ /* Fujitsu 33600 PnP-I2 R Plug & Play */
+ { "FUJ0202", 0 },
+ /* Fujitsu FMV-FX431 Plug & Play */
+ { "FUJ0205", 0 },
+ /* Fujitsu 33600 PnP-I4 R Plug & Play */
+ { "FUJ0206", 0 },
+ /* Fujitsu Fax Voice 33600 PNP-I5 R Plug & Play */
+ { "FUJ0209", 0 },
+ /* Archtek America Corp. */
+ /* Archtek SmartLink Modem 3334BT Plug & Play */
+ { "GVC000F", 0 },
+ /* Hayes */
+ /* Hayes Optima 288 V.34-V.FC + FAX + Voice Plug & Play */
+ { "HAY0001", 0 },
+ /* Hayes Optima 336 V.34 + FAX + Voice PnP */
+ { "HAY000C", 0 },
+ /* Hayes Optima 336B V.34 + FAX + Voice PnP */
+ { "HAY000D", 0 },
+ /* Hayes Accura 56K Ext Fax Modem PnP */
+ { "HAY5670", 0 },
+ /* Hayes Accura 56K Ext Fax Modem PnP */
+ { "HAY5674", 0 },
+ /* Hayes Accura 56K Fax Modem PnP */
+ { "HAY5675", 0 },
+ /* Hayes 288, V.34 + FAX */
+ { "HAYF000", 0 },
+ /* Hayes Optima 288 V.34 + FAX + Voice, Plug & Play */
+ { "HAYF001", 0 },
+ /* IBM */
+ /* IBM Thinkpad 701 Internal Modem Voice */
+ { "IBM0033", 0 },
+ /* Intertex */
+ /* Intertex 28k8 33k6 Voice EXT PnP */
+ { "IXDC801", 0 },
+ /* Intertex 33k6 56k Voice EXT PnP */
+ { "IXDC901", 0 },
+ /* Intertex 28k8 33k6 Voice SP EXT PnP */
+ { "IXDD801", 0 },
+ /* Intertex 33k6 56k Voice SP EXT PnP */
+ { "IXDD901", 0 },
+ /* Intertex 28k8 33k6 Voice SP INT PnP */
+ { "IXDF401", 0 },
+ /* Intertex 28k8 33k6 Voice SP EXT PnP */
+ { "IXDF801", 0 },
+ /* Intertex 33k6 56k Voice SP EXT PnP */
+ { "IXDF901", 0 },
+ /* Kortex International */
+ /* KORTEX 28800 Externe PnP */
+ { "KOR4522", 0 },
+ /* KXPro 33.6 Vocal ASVD PnP */
+ { "KORF661", 0 },
+ /* Lasat */
+ /* LASAT Internet 33600 PnP */
+ { "LAS4040", 0 },
+ /* Lasat Safire 560 PnP */
+ { "LAS4540", 0 },
+ /* Lasat Safire 336 PnP */
+ { "LAS5440", 0 },
+ /* Microcom, Inc. */
+ /* Microcom TravelPorte FAST V.34 Plug & Play */
+ { "MNP0281", 0 },
+ /* Microcom DeskPorte V.34 FAST or FAST+ Plug & Play */
+ { "MNP0336", 0 },
+ /* Microcom DeskPorte FAST EP 28.8 Plug & Play */
+ { "MNP0339", 0 },
+ /* Microcom DeskPorte 28.8P Plug & Play */
+ { "MNP0342", 0 },
+ /* Microcom DeskPorte FAST ES 28.8 Plug & Play */
+ { "MNP0500", 0 },
+ /* Microcom DeskPorte FAST ES 28.8 Plug & Play */
+ { "MNP0501", 0 },
+ /* Microcom DeskPorte 28.8S Internal Plug & Play */
+ { "MNP0502", 0 },
+ /* Motorola */
+ /* Motorola BitSURFR Plug & Play */
+ { "MOT1105", 0 },
+ /* Motorola TA210 Plug & Play */
+ { "MOT1111", 0 },
+ /* Motorola HMTA 200 (ISDN) Plug & Play */
+ { "MOT1114", 0 },
+ /* Motorola BitSURFR Plug & Play */
+ { "MOT1115", 0 },
+ /* Motorola Lifestyle 28.8 Internal */
+ { "MOT1190", 0 },
+ /* Motorola V.3400 Plug & Play */
+ { "MOT1501", 0 },
+ /* Motorola Lifestyle 28.8 V.34 Plug & Play */
+ { "MOT1502", 0 },
+ /* Motorola Power 28.8 V.34 Plug & Play */
+ { "MOT1505", 0 },
+ /* Motorola ModemSURFR External 28.8 Plug & Play */
+ { "MOT1509", 0 },
+ /* Motorola Premier 33.6 Desktop Plug & Play */
+ { "MOT150A", 0 },
+ /* Motorola VoiceSURFR 56K External PnP */
+ { "MOT150F", 0 },
+ /* Motorola ModemSURFR 56K External PnP */
+ { "MOT1510", 0 },
+ /* Motorola ModemSURFR 56K Internal PnP */
+ { "MOT1550", 0 },
+ /* Motorola ModemSURFR Internal 28.8 Plug & Play */
+ { "MOT1560", 0 },
+ /* Motorola Premier 33.6 Internal Plug & Play */
+ { "MOT1580", 0 },
+ /* Motorola OnlineSURFR 28.8 Internal Plug & Play */
+ { "MOT15B0", 0 },
+ /* Motorola VoiceSURFR 56K Internal PnP */
+ { "MOT15F0", 0 },
+ /* Com 1 */
+ /* Deskline K56 Phone System PnP */
+ { "MVX00A1", 0 },
+ /* PC Rider K56 Phone System PnP */
+ { "MVX00F2", 0 },
+ /* Pace 56 Voice Internal Plug & Play Modem */
+ { "PMC2430", 0 },
+ /* Generic */
+ /* Generic standard PC COM port */
+ { "PNP0500", 0 },
+ /* Generic 16550A-compatible COM port */
+ { "PNP0501", 0 },
+ /* Compaq 14400 Modem */
+ { "PNPC000", 0 },
+ /* Compaq 2400/9600 Modem */
+ { "PNPC001", 0 },
+ /* Dial-Up Networking Serial Cable between 2 PCs */
+ { "PNPC031", 0 },
+ /* Dial-Up Networking Parallel Cable between 2 PCs */
+ { "PNPC032", 0 },
+ /* Standard 9600 bps Modem */
+ { "PNPC100", 0 },
+ /* Standard 14400 bps Modem */
+ { "PNPC101", 0 },
+ /* Standard 28800 bps Modem*/
+ { "PNPC102", 0 },
+ /* Standard Modem*/
+ { "PNPC103", 0 },
+ /* Standard 9600 bps Modem*/
+ { "PNPC104", 0 },
+ /* Standard 14400 bps Modem*/
+ { "PNPC105", 0 },
+ /* Standard 28800 bps Modem*/
+ { "PNPC106", 0 },
+ /* Standard Modem */
+ { "PNPC107", 0 },
+ /* Standard 9600 bps Modem */
+ { "PNPC108", 0 },
+ /* Standard 14400 bps Modem */
+ { "PNPC109", 0 },
+ /* Standard 28800 bps Modem */
+ { "PNPC10A", 0 },
+ /* Standard Modem */
+ { "PNPC10B", 0 },
+ /* Standard 9600 bps Modem */
+ { "PNPC10C", 0 },
+ /* Standard 14400 bps Modem */
+ { "PNPC10D", 0 },
+ /* Standard 28800 bps Modem */
+ { "PNPC10E", 0 },
+ /* Standard Modem */
+ { "PNPC10F", 0 },
+ /* Standard PCMCIA Card Modem */
+ { "PNP2000", 0 },
+ /* Rockwell */
+ /* Modular Technology */
+ /* Rockwell 33.6 DPF Internal PnP */
+ /* Modular Technology 33.6 Internal PnP */
+ { "ROK0030", 0 },
+ /* Kortex International */
+ /* KORTEX 14400 Externe PnP */
+ { "ROK0100", 0 },
+ /* Viking Components, Inc */
+ /* Viking 28.8 INTERNAL Fax+Data+Voice PnP */
+ { "ROK4920", 0 },
+ /* Rockwell */
+ /* British Telecom */
+ /* Modular Technology */
+ /* Rockwell 33.6 DPF External PnP */
+ /* BT Prologue 33.6 External PnP */
+ /* Modular Technology 33.6 External PnP */
+ { "RSS00A0", 0 },
+ /* Viking 56K FAX INT */
+ { "RSS0262", 0 },
+ /* SupraExpress 28.8 Data/Fax PnP modem */
+ { "SUP1310", 0 },
+ /* SupraExpress 33.6 Data/Fax PnP modem */
+ { "SUP1421", 0 },
+ /* SupraExpress 33.6 Data/Fax PnP modem */
+ { "SUP1590", 0 },
+ /* SupraExpress 33.6 Data/Fax PnP modem */
+ { "SUP1760", 0 },
+ /* Phoebe Micro */
+ /* Phoebe Micro 33.6 Data Fax 1433VQH Plug & Play */
+ { "TEX0011", 0 },
+ /* Archtek America Corp. */
+ /* Archtek SmartLink Modem 3334BT Plug & Play */
+ { "UAC000F", 0 },
+ /* 3Com Corp. */
+ /* Gateway Telepath IIvi 33.6 */
+ { "USR0000", 0 },
+ /* Sportster Vi 14.4 PnP FAX Voicemail */
+ { "USR0004", 0 },
+ /* U.S. Robotics 33.6K Voice INT PnP */
+ { "USR0006", 0 },
+ /* U.S. Robotics 33.6K Voice EXT PnP */
+ { "USR0007", 0 },
+ /* U.S. Robotics 33.6K Voice INT PnP */
+ { "USR2002", 0 },
+ /* U.S. Robotics 56K Voice INT PnP */
+ { "USR2070", 0 },
+ /* U.S. Robotics 56K Voice EXT PnP */
+ { "USR2080", 0 },
+ /* U.S. Robotics 56K FAX INT */
+ { "USR3031", 0 },
+ /* U.S. Robotics 56K Voice INT PnP */
+ { "USR3070", 0 },
+ /* U.S. Robotics 56K Voice EXT PnP */
+ { "USR3080", 0 },
+ /* U.S. Robotics 56K Voice INT PnP */
+ { "USR3090", 0 },
+ /* U.S. Robotics 56K Message */
+ { "USR9100", 0 },
+ /* U.S. Robotics 56K FAX EXT PnP*/
+ { "USR9160", 0 },
+ /* U.S. Robotics 56K FAX INT PnP*/
+ { "USR9170", 0 },
+ /* U.S. Robotics 56K Voice EXT PnP*/
+ { "USR9180", 0 },
+ /* U.S. Robotics 56K Voice INT PnP*/
+ { "USR9190", 0 },
+ { "", 0 }
+};
+
+static void inline avoid_irq_share(struct pci_dev *dev)
+{
+ unsigned int map = 0x1FF8;
+ struct isapnp_irq *irq;
+ struct isapnp_resources *res = dev->sysdata;
+
+ serial8250_get_irq_map(&map);
+
+ for ( ; res; res = res->alt)
+ for (irq = res->irq; irq; irq = irq->next)
+ irq->map = map;
+}
+
+static char *modem_names[] __devinitdata = {
+ "MODEM", "Modem", "modem", "FAX", "Fax", "fax",
+ "56K", "56k", "K56", "33.6", "28.8", "14.4",
+ "33,600", "28,800", "14,400", "33.600", "28.800", "14.400",
+ "33600", "28800", "14400", "V.90", "V.34", "V.32", 0
+};
+
+static int __devinit check_name(char *name)
+{
+ char **tmp;
+
+ for (tmp = modem_names; *tmp; tmp++)
+ if (strstr(name, *tmp))
+ return 1;
+
+ return 0;
+}
+
+static int inline check_compatible_id(struct pci_dev *dev)
+{
+ int i;
+ for (i = 0; i < DEVICE_COUNT_COMPATIBLE; i++)
+ if ((dev->vendor_compatible[i] ==
+ ISAPNP_VENDOR('P', 'N', 'P')) &&
+ (swab16(dev->device_compatible[i]) >= 0xc000) &&
+ (swab16(dev->device_compatible[i]) <= 0xdfff))
+ return 0;
+ return 1;
+}
+
+/*
+ * Given a complete unknown ISA PnP device, try to use some heuristics to
+ * detect modems. Currently use such heuristic set:
+ * - dev->name or dev->bus->name must contain "modem" substring;
+ * - device must have only one IO region (8 byte long) with base adress
+ * 0x2e8, 0x3e8, 0x2f8 or 0x3f8.
+ *
+ * Such detection looks very ugly, but can detect at least some of numerous
+ * ISA PnP modems, alternatively we must hardcode all modems in pnp_devices[]
+ * table.
+ */
+static int serial_pnp_guess_board(struct pci_dev *dev, int *flags)
+{
+ struct isapnp_resources *res = (struct isapnp_resources *)dev->sysdata;
+ struct isapnp_resources *resa;
+
+ if (!(check_name(dev->name) || check_name(dev->bus->name)) &&
+ !(check_compatible_id(dev)))
+ return -ENODEV;
+
+ if (!res || res->next)
+ return -ENODEV;
+
+ for (resa = res->alt; resa; resa = resa->alt) {
+ struct isapnp_port *port;
+ for (port = res->port; port; port = port->next)
+ if ((port->size == 8) &&
+ ((port->min == 0x2f8) ||
+ (port->min == 0x3f8) ||
+ (port->min == 0x2e8) ||
+ (port->min == 0x3e8)))
+ return 0;
+ }
+
+ return -ENODEV;
+}
+
+static int
+pnp_init_one(struct pci_dev *dev, const struct pnpbios_device_id *ent,
+ char *slot_name)
+{
+ struct serial_struct serial_req;
+ int ret, line, flags = ent ? ent->driver_data : 0;
+
+ if (!ent) {
+ ret = serial_pnp_guess_board(dev, &flags);
+ if (ret)
+ return ret;
+ }
+
+ if (dev->prepare(dev) < 0) {
+ printk("serial: PNP device '%s' prepare failed\n",
+ slot_name);
+ return -ENODEV;
+ }
+
+ if (dev->active)
+ return -ENODEV;
+
+ if (flags & SPCI_FL_NO_SHIRQ)
+ avoid_irq_share(dev);
+
+ if (dev->activate(dev) < 0) {
+ printk("serial: PNP device '%s' activate failed\n",
+ slot_name);
+ return -ENODEV;
+ }
+
+ memset(&serial_req, 0, sizeof(serial_req));
+ serial_req.irq = dev->irq_resource[0].start;
+ serial_req.port = pci_resource_start(dev, 0);
+ if (HIGH_BITS_OFFSET)
+ serial_req.port = pci_resource_start(dev, 0) >> HIGH_BITS_OFFSET;
+
+#ifdef SERIAL_DEBUG_PNP
+ printk("Setup PNP port: port %x, irq %d, type %d\n",
+ serial_req.port, serial_req.irq, serial_req.io_type);
+#endif
+
+ serial_req.flags = ASYNC_SKIP_TEST | ASYNC_AUTOPROBE;
+ serial_req.baud_base = 115200;
+ line = register_serial(&serial_req);
+
+ if (line >= 0) {
+ pci_set_drvdata(dev, (void *)(line + 1));
+
+ /*
+ * Public health warning: remove this once the 2.5
+ * pnpbios_module_init() stuff is incorporated.
+ */
+ dev->driver = (void *)pnp_dev_table;
+ } else
+ dev->deactivate(dev);
+
+ return line >= 0 ? 0 : -ENODEV;
+}
+
+static void pnp_remove_one(struct pci_dev *dev)
+{
+ int line = (int)pci_get_drvdata(dev);
+
+ if (line) {
+ pci_set_drvdata(dev, NULL);
+
+ unregister_serial(line - 1);
+
+ dev->deactivate(dev);
+ }
+}
+
+static char hex[] = "0123456789ABCDEF";
+
+/*
+ * This function should vanish when 2.5 comes around and
+ * we have pnpbios_module_init()
+ */
+static int pnp_init(void)
+{
+ const struct pnpbios_device_id *id;
+ struct pci_dev *dev = NULL;
+ int nr = 0, rc = -ENODEV;
+
+#ifdef SERIAL_DEBUG_PNP
+ printk("Entered probe_serial_pnp()\n");
+#endif
+
+ isapnp_for_each_dev(dev) {
+ char slot_name[8];
+ u32 pnpid;
+
+ if (dev->active)
+ continue;
+
+ pnpid = dev->vendor << 16 | dev->device;
+ pnpid = cpu_to_le32(pnpid);
+
+#define HEX(id,a) hex[((id)>>a) & 15]
+#define CHAR(id,a) (0x40 + (((id)>>a) & 31))
+ slot_name[0] = CHAR(pnpid, 26);
+ slot_name[1] = CHAR(pnpid, 21);
+ slot_name[2] = CHAR(pnpid, 16);
+ slot_name[3] = HEX(pnpid, 12);
+ slot_name[4] = HEX(pnpid, 8);
+ slot_name[5] = HEX(pnpid, 4);
+ slot_name[6] = HEX(pnpid, 0);
+ slot_name[7] = '\0';
+
+ for (id = pnp_dev_table; id->id[0]; id++)
+ if (memcmp(id->id, slot_name, 7) == 0)
+ break;
+
+ if (id->id[0])
+ rc = pnp_init_one(dev, id, slot_name);
+ else
+ rc = pnp_init_one(dev, NULL, slot_name);
+
+ if (rc == 0)
+ nr++;
+ }
+
+#ifdef SERIAL_DEBUG_PNP
+ printk("Leaving probe_serial_pnp() (probe finished)\n");
+#endif
+
+ return nr == 0 ? rc : 0;
+}
+
+static int __init serial8250_pnp_init(void)
+{
+ if (!isapnp_present()) {
+#ifdef SERIAL_DEBUG_PNP
+ printk("Leaving probe_serial_pnp() (no isapnp)\n");
+#endif
+ return -ENODEV;
+ }
+ return pnp_init();
+}
+
+static void __exit serial8250_pnp_exit(void)
+{
+ struct pci_dev *dev = NULL;
+
+ isapnp_for_each_dev(dev) {
+ if (dev->driver != (void *)pnp_dev_table)
+ continue;
+ pnp_remove_one(dev);
+ }
+}
+
+module_init(serial8250_pnp_init);
+module_exit(serial8250_pnp_exit);
+
+EXPORT_NO_SYMBOLS;
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Generic 8250/16x50 PNPBIOS serial probe module");
+MODULE_DEVICE_TABLE(pnpbios, pnp_dev_table);
--- /dev/null
+/*
+ * linux/drivers/char/serial_amba.c
+ *
+ * Driver for AMBA serial ports
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * Copyright 1999 ARM Limited
+ * Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * $Id: serial_amba.c,v 1.35 2002/07/21 08:57:55 rmk Exp $
+ *
+ * This is a generic driver for ARM AMBA-type serial ports. They
+ * have a lot of 16550-like features, but are not register compatable.
+ * Note that although they do have CTS, DCD and DSR inputs, they do
+ * not have an RI input, nor do they have DTR or RTS outputs. If
+ * required, these have to be supplied via some other means (eg, GPIO)
+ * and hooked into this driver.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/circ_buf.h>
+#include <linux/serial.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+
+#if defined(CONFIG_SERIAL_AMBA_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/serial_core.h>
+
+#include <asm/hardware/serial_amba.h>
+
+#define UART_NR 2
+
+#define SERIAL_AMBA_MAJOR 204
+#define SERIAL_AMBA_MINOR 16
+#define SERIAL_AMBA_NR UART_NR
+
+#define AMBA_ISR_PASS_LIMIT 256
+
+/*
+ * Access macros for the AMBA UARTs
+ */
+#define UART_GET_INT_STATUS(p) readb((p)->membase + AMBA_UARTIIR)
+#define UART_PUT_ICR(p, c) writel((c), (p)->membase + AMBA_UARTICR)
+#define UART_GET_FR(p) readb((p)->membase + AMBA_UARTFR)
+#define UART_GET_CHAR(p) readb((p)->membase + AMBA_UARTDR)
+#define UART_PUT_CHAR(p, c) writel((c), (p)->membase + AMBA_UARTDR)
+#define UART_GET_RSR(p) readb((p)->membase + AMBA_UARTRSR)
+#define UART_GET_CR(p) readb((p)->membase + AMBA_UARTCR)
+#define UART_PUT_CR(p,c) writel((c), (p)->membase + AMBA_UARTCR)
+#define UART_GET_LCRL(p) readb((p)->membase + AMBA_UARTLCR_L)
+#define UART_PUT_LCRL(p,c) writel((c), (p)->membase + AMBA_UARTLCR_L)
+#define UART_GET_LCRM(p) readb((p)->membase + AMBA_UARTLCR_M)
+#define UART_PUT_LCRM(p,c) writel((c), (p)->membase + AMBA_UARTLCR_M)
+#define UART_GET_LCRH(p) readb((p)->membase + AMBA_UARTLCR_H)
+#define UART_PUT_LCRH(p,c) writel((c), (p)->membase + AMBA_UARTLCR_H)
+#define UART_RX_DATA(s) (((s) & AMBA_UARTFR_RXFE) == 0)
+#define UART_TX_READY(s) (((s) & AMBA_UARTFR_TXFF) == 0)
+#define UART_TX_EMPTY(p) ((UART_GET_FR(p) & AMBA_UARTFR_TMSK) == 0)
+
+#define UART_DUMMY_RSR_RX 256
+#define UART_PORT_SIZE 64
+
+/*
+ * On the Integrator platform, the port RTS and DTR are provided by
+ * bits in the following SC_CTRLS register bits:
+ * RTS DTR
+ * UART0 7 6
+ * UART1 5 4
+ */
+#define SC_CTRLC (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLC_OFFSET)
+#define SC_CTRLS (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLS_OFFSET)
+
+/*
+ * We wrap our port structure around the generic uart_port.
+ */
+struct uart_amba_port {
+ struct uart_port port;
+ unsigned int dtr_mask;
+ unsigned int rts_mask;
+ unsigned int old_status;
+};
+
+static void __ambauart_stop_tx(struct uart_port *port)
+{
+ unsigned int cr;
+
+ cr = UART_GET_CR(port);
+ cr &= ~AMBA_UARTCR_TIE;
+ UART_PUT_CR(port, cr);
+}
+
+static void ambauart_stop_tx(struct uart_port *port, unsigned int tty_stop)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ __ambauart_stop_tx(port);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void ambauart_start_tx(struct uart_port *port, unsigned int tty_start)
+{
+ unsigned int cr;
+
+ cr = UART_GET_CR(port);
+ cr |= AMBA_UARTCR_TIE;
+ UART_PUT_CR(port, cr);
+}
+
+static void ambauart_stop_rx(struct uart_port *port)
+{
+ unsigned long flags;
+ unsigned int cr;
+
+ spin_lock_irqsave(&port->lock, flags);
+ cr = UART_GET_CR(port);
+ cr &= ~(AMBA_UARTCR_RIE | AMBA_UARTCR_RTIE);
+ UART_PUT_CR(port, cr);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void ambauart_enable_ms(struct uart_port *port)
+{
+ unsigned long flags;
+ unsigned int cr;
+
+ spin_lock_irqsave(&port->lock, flags);
+ cr = UART_GET_CR(port);
+ cr |= AMBA_UARTCR_MSIE;
+ UART_PUT_CR(port, cr);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void
+#ifdef SUPPORT_SYSRQ
+ambauart_rx_chars(struct uart_port *port, struct pt_regs *regs)
+#else
+ambauart_rx_chars(struct uart_port *port)
+#endif
+{
+ struct tty_struct *tty = port->info->tty;
+ unsigned int status, ch, rsr, max_count = 256;
+
+ status = UART_GET_FR(port);
+ while (UART_RX_DATA(status) && max_count--) {
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ tty->flip.tqueue.routine((void *)tty);
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ printk(KERN_WARNING "TTY_DONT_FLIP set\n");
+ return;
+ }
+ }
+
+ ch = UART_GET_CHAR(port);
+
+ *tty->flip.char_buf_ptr = ch;
+ *tty->flip.flag_buf_ptr = TTY_NORMAL;
+ port->icount.rx++;
+
+ /*
+ * Note that the error handling code is
+ * out of the main execution path
+ */
+ rsr = UART_GET_RSR(port) | UART_DUMMY_RSR_RX;
+ if (rsr & AMBA_UARTRSR_ANY) {
+ if (rsr & AMBA_UARTRSR_BE) {
+ rsr &= ~(AMBA_UARTRSR_FE | AMBA_UARTRSR_PE);
+ port->icount.brk++;
+ if (uart_handle_break(port))
+ goto ignore_char;
+ } else if (rsr & AMBA_UARTRSR_PE)
+ port->icount.parity++;
+ else if (rsr & AMBA_UARTRSR_FE)
+ port->icount.frame++;
+ if (rsr & AMBA_UARTRSR_OE)
+ port->icount.overrun++;
+
+ rsr &= port->read_status_mask;
+
+ if (rsr & AMBA_UARTRSR_BE)
+ *tty->flip.flag_buf_ptr = TTY_BREAK;
+ else if (rsr & AMBA_UARTRSR_PE)
+ *tty->flip.flag_buf_ptr = TTY_PARITY;
+ else if (rsr & AMBA_UARTRSR_FE)
+ *tty->flip.flag_buf_ptr = TTY_FRAME;
+ }
+
+ if (uart_handle_sysrq_char(port, ch, regs))
+ goto ignore_char;
+
+ if ((rsr & port->ignore_status_mask) == 0) {
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ tty->flip.count++;
+ }
+ if ((rsr & AMBA_UARTRSR_OE) &&
+ tty->flip.count < TTY_FLIPBUF_SIZE) {
+ /*
+ * Overrun is special, since it's reported
+ * immediately, and doesn't affect the current
+ * character
+ */
+ *tty->flip.char_buf_ptr++ = 0;
+ *tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
+ tty->flip.count++;
+ }
+ ignore_char:
+ status = UART_GET_FR(port);
+ }
+ tty_flip_buffer_push(tty);
+ return;
+}
+
+static void ambauart_tx_chars(struct uart_port *port)
+{
+ struct circ_buf *xmit = &port->info->xmit;
+ int count;
+
+ if (port->x_char) {
+ UART_PUT_CHAR(port, port->x_char);
+ port->icount.tx++;
+ port->x_char = 0;
+ return;
+ }
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ __ambauart_stop_tx(port);
+ return;
+ }
+
+ count = port->fifosize >> 1;
+ do {
+ UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
+ } while (--count > 0);
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_event(port, EVT_WRITE_WAKEUP);
+
+ if (uart_circ_empty(xmit))
+ __ambauart_stop_tx(port);
+}
+
+static void ambauart_modem_status(struct uart_port *port)
+{
+ struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ unsigned int status, delta;
+
+ UART_PUT_ICR(&uap->port, 0);
+
+ status = UART_GET_FR(&uap->port) & AMBA_UARTFR_MODEM_ANY;
+
+ delta = status ^ uap->old_status;
+ uap->old_status = status;
+
+ if (!delta)
+ return;
+
+ if (delta & AMBA_UARTFR_DCD)
+ uart_handle_dcd_change(&uap->port, status & AMBA_UARTFR_DCD);
+
+ if (delta & AMBA_UARTFR_DSR)
+ uap->port.icount.dsr++;
+
+ if (delta & AMBA_UARTFR_CTS)
+ uart_handle_cts_change(&uap->port, status & AMBA_UARTFR_CTS);
+
+ wake_up_interruptible(&uap->port.info->delta_msr_wait);
+}
+
+static void ambauart_int(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uart_port *port = dev_id;
+ unsigned int status, pass_counter = AMBA_ISR_PASS_LIMIT;
+
+ status = UART_GET_INT_STATUS(port);
+ do {
+ if (status & (AMBA_UARTIIR_RTIS | AMBA_UARTIIR_RIS))
+#ifdef SUPPORT_SYSRQ
+ ambauart_rx_chars(port, regs);
+#else
+ ambauart_rx_chars(port);
+#endif
+ if (status & AMBA_UARTIIR_MIS)
+ ambauart_modem_status(port);
+ if (status & AMBA_UARTIIR_TIS)
+ ambauart_tx_chars(port);
+
+ if (pass_counter-- == 0)
+ break;
+
+ status = UART_GET_INT_STATUS(port);
+ } while (status & (AMBA_UARTIIR_RTIS | AMBA_UARTIIR_RIS |
+ AMBA_UARTIIR_TIS));
+}
+
+static unsigned int ambauart_tx_empty(struct uart_port *port)
+{
+ return UART_GET_FR(port) & AMBA_UARTFR_BUSY ? 0 : TIOCSER_TEMT;
+}
+
+static unsigned int ambauart_get_mctrl(struct uart_port *port)
+{
+ unsigned int result = 0;
+ unsigned int status;
+
+ status = UART_GET_FR(port);
+ if (status & AMBA_UARTFR_DCD)
+ result |= TIOCM_CAR;
+ if (status & AMBA_UARTFR_DSR)
+ result |= TIOCM_DSR;
+ if (status & AMBA_UARTFR_CTS)
+ result |= TIOCM_CTS;
+
+ return result;
+}
+
+static void ambauart_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ unsigned int ctrls = 0, ctrlc = 0;
+
+ if (mctrl & TIOCM_RTS)
+ ctrlc |= uap->rts_mask;
+ else
+ ctrls |= uap->rts_mask;
+
+ if (mctrl & TIOCM_DTR)
+ ctrlc |= uap->dtr_mask;
+ else
+ ctrls |= uap->dtr_mask;
+
+ __raw_writel(ctrls, SC_CTRLS);
+ __raw_writel(ctrlc, SC_CTRLC);
+}
+
+static void ambauart_break_ctl(struct uart_port *port, int break_state)
+{
+ unsigned long flags;
+ unsigned int lcr_h;
+
+ spin_lock_irqsave(&port->lock, flags);
+ lcr_h = UART_GET_LCRH(port);
+ if (break_state == -1)
+ lcr_h |= AMBA_UARTLCR_H_BRK;
+ else
+ lcr_h &= ~AMBA_UARTLCR_H_BRK;
+ UART_PUT_LCRH(port, lcr_h);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static int ambauart_startup(struct uart_port *port)
+{
+ struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ int retval;
+
+ /*
+ * Allocate the IRQ
+ */
+ retval = request_irq(port->irq, ambauart_int, 0, "amba", port);
+ if (retval)
+ return retval;
+
+ /*
+ * initialise the old status of the modem signals
+ */
+ uap->old_status = UART_GET_FR(port) & AMBA_UARTFR_MODEM_ANY;
+
+ /*
+ * Finally, enable interrupts
+ */
+ UART_PUT_CR(port, AMBA_UARTCR_UARTEN | AMBA_UARTCR_RIE |
+ AMBA_UARTCR_RTIE);
+
+ return 0;
+}
+
+static void ambauart_shutdown(struct uart_port *port)
+{
+ /*
+ * Free the interrupt
+ */
+ free_irq(port->irq, port);
+
+ /*
+ * disable all interrupts, disable the port
+ */
+ UART_PUT_CR(port, 0);
+
+ /* disable break condition and fifos */
+ UART_PUT_LCRH(port, UART_GET_LCRH(port) &
+ ~(AMBA_UARTLCR_H_BRK | AMBA_UARTLCR_H_FEN));
+}
+
+static void
+ambauart_change_speed(struct uart_port *port, unsigned int cflag,
+ unsigned int iflag, unsigned int quot)
+{
+ unsigned int lcr_h, old_cr;
+ unsigned long flags;
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ case CS5:
+ lcr_h = AMBA_UARTLCR_H_WLEN_5;
+ break;
+ case CS6:
+ lcr_h = AMBA_UARTLCR_H_WLEN_6;
+ break;
+ case CS7:
+ lcr_h = AMBA_UARTLCR_H_WLEN_7;
+ break;
+ default: // CS8
+ lcr_h = AMBA_UARTLCR_H_WLEN_8;
+ break;
+ }
+ if (cflag & CSTOPB)
+ lcr_h |= AMBA_UARTLCR_H_STP2;
+ if (cflag & PARENB) {
+ lcr_h |= AMBA_UARTLCR_H_PEN;
+ if (!(cflag & PARODD))
+ lcr_h |= AMBA_UARTLCR_H_EPS;
+ }
+ if (port->fifosize > 1)
+ lcr_h |= AMBA_UARTLCR_H_FEN;
+
+ port->read_status_mask = AMBA_UARTRSR_OE;
+ if (iflag & INPCK)
+ port->read_status_mask |= AMBA_UARTRSR_FE | AMBA_UARTRSR_PE;
+ if (iflag & (BRKINT | PARMRK))
+ port->read_status_mask |= AMBA_UARTRSR_BE;
+
+ /*
+ * Characters to ignore
+ */
+ port->ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= AMBA_UARTRSR_FE | AMBA_UARTRSR_PE;
+ if (iflag & IGNBRK) {
+ port->ignore_status_mask |= AMBA_UARTRSR_BE;
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns too (for real raw support).
+ */
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= AMBA_UARTRSR_OE;
+ }
+
+ /*
+ * Ignore all characters if CREAD is not set.
+ */
+ if ((cflag & CREAD) == 0)
+ port->ignore_status_mask |= UART_DUMMY_RSR_RX;
+
+ /* first, disable everything */
+ spin_lock_irqsave(&port->lock, flags);
+ old_cr = UART_GET_CR(port) & ~AMBA_UARTCR_MSIE;
+
+ if (UART_ENABLE_MS(port, cflag))
+ old_cr |= AMBA_UARTCR_MSIE;
+
+ UART_PUT_CR(port, 0);
+
+ /* Set baud rate */
+ quot -= 1;
+ UART_PUT_LCRM(port, ((quot & 0xf00) >> 8));
+ UART_PUT_LCRL(port, (quot & 0xff));
+
+ /*
+ * ----------v----------v----------v----------v-----
+ * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
+ * ----------^----------^----------^----------^-----
+ */
+ UART_PUT_LCRH(port, lcr_h);
+ UART_PUT_CR(port, old_cr);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static const char *ambauart_type(struct uart_port *port)
+{
+ return port->type == PORT_AMBA ? "AMBA" : NULL;
+}
+
+/*
+ * Release the memory region(s) being used by 'port'
+ */
+static void ambauart_release_port(struct uart_port *port)
+{
+ release_mem_region(port->mapbase, UART_PORT_SIZE);
+}
+
+/*
+ * Request the memory region(s) being used by 'port'
+ */
+static int ambauart_request_port(struct uart_port *port)
+{
+ return request_mem_region(port->mapbase, UART_PORT_SIZE, "serial_amba")
+ != NULL ? 0 : -EBUSY;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void ambauart_config_port(struct uart_port *port, int flags)
+{
+ if (flags & UART_CONFIG_TYPE) {
+ port->type = PORT_AMBA;
+ ambauart_request_port(port);
+ }
+}
+
+/*
+ * verify the new serial_struct (for TIOCSSERIAL).
+ */
+static int ambauart_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ int ret = 0;
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_AMBA)
+ ret = -EINVAL;
+ if (ser->irq < 0 || ser->irq >= NR_IRQS)
+ ret = -EINVAL;
+ if (ser->baud_base < 9600)
+ ret = -EINVAL;
+ return ret;
+}
+
+static struct uart_ops amba_pops = {
+ tx_empty: ambauart_tx_empty,
+ set_mctrl: ambauart_set_mctrl,
+ get_mctrl: ambauart_get_mctrl,
+ stop_tx: ambauart_stop_tx,
+ start_tx: ambauart_start_tx,
+ stop_rx: ambauart_stop_rx,
+ enable_ms: ambauart_enable_ms,
+ break_ctl: ambauart_break_ctl,
+ startup: ambauart_startup,
+ shutdown: ambauart_shutdown,
+ change_speed: ambauart_change_speed,
+ type: ambauart_type,
+ release_port: ambauart_release_port,
+ request_port: ambauart_request_port,
+ config_port: ambauart_config_port,
+ verify_port: ambauart_verify_port,
+};
+
+static struct uart_amba_port amba_ports[UART_NR] = {
+ {
+ port: {
+ membase: (void *)IO_ADDRESS(INTEGRATOR_UART0_BASE),
+ mapbase: INTEGRATOR_UART0_BASE,
+ iotype: SERIAL_IO_MEM,
+ irq: IRQ_UARTINT0,
+ uartclk: 14745600,
+ fifosize: 16,
+ ops: &amba_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ line: 0,
+ },
+ dtr_mask: 1 << 5,
+ rts_mask: 1 << 4,
+ },
+ {
+ port: {
+ membase: (void *)IO_ADDRESS(INTEGRATOR_UART1_BASE),
+ mapbase: INTEGRATOR_UART1_BASE,
+ iotype: SERIAL_IO_MEM,
+ irq: IRQ_UARTINT1,
+ uartclk: 14745600,
+ fifosize: 16,
+ ops: &amba_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ line: 1,
+ },
+ dtr_mask: 1 << 7,
+ rts_mask: 1 << 6,
+ }
+};
+
+#ifdef CONFIG_SERIAL_AMBA_CONSOLE
+
+static void
+ambauart_console_write(struct console *co, const char *s, unsigned int count)
+{
+ struct uart_port *port = &amba_ports[co->index].port;
+ unsigned int status, old_cr;
+ int i;
+
+ /*
+ * First save the CR then disable the interrupts
+ */
+ old_cr = UART_GET_CR(port);
+ UART_PUT_CR(port, AMBA_UARTCR_UARTEN);
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++) {
+ do {
+ status = UART_GET_FR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, s[i]);
+ if (s[i] == '\n') {
+ do {
+ status = UART_GET_FR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, '\r');
+ }
+ }
+
+ /*
+ * Finally, wait for transmitter to become empty
+ * and restore the TCR
+ */
+ do {
+ status = UART_GET_FR(port);
+ } while (status & AMBA_UARTFR_BUSY);
+ UART_PUT_CR(port, old_cr);
+}
+
+static kdev_t ambauart_console_device(struct console *co)
+{
+ return mk_kdev(SERIAL_AMBA_MAJOR, SERIAL_AMBA_MINOR + co->index);
+}
+
+static void __init
+ambauart_console_get_options(struct uart_port *port, int *baud,
+ int *parity, int *bits)
+{
+ if (UART_GET_CR(port) & AMBA_UARTCR_UARTEN) {
+ unsigned int lcr_h, quot;
+ lcr_h = UART_GET_LCRH(port);
+
+ *parity = 'n';
+ if (lcr_h & AMBA_UARTLCR_H_PEN) {
+ if (lcr_h & AMBA_UARTLCR_H_EPS)
+ *parity = 'e';
+ else
+ *parity = 'o';
+ }
+
+ if ((lcr_h & 0x60) == AMBA_UARTLCR_H_WLEN_7)
+ *bits = 7;
+ else
+ *bits = 8;
+
+ quot = UART_GET_LCRL(port) | UART_GET_LCRM(port) << 8;
+ *baud = port->uartclk / (16 * (quot + 1));
+ }
+}
+
+static int __init ambauart_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 38400;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ if (co->index >= UART_NR)
+ co->index = 0;
+ port = &amba_ports[co->index].port;
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ ambauart_console_get_options(port, &baud, &parity, &bits);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct console amba_console = {
+ name: "ttyAM",
+ write: ambauart_console_write,
+ device: ambauart_console_device,
+ setup: ambauart_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+};
+
+void __init ambauart_console_init(void)
+{
+ register_console(&amba_console);
+}
+
+#define AMBA_CONSOLE &amba_console
+#else
+#define AMBA_CONSOLE NULL
+#endif
+
+static struct uart_driver amba_reg = {
+ owner: THIS_MODULE,
+ driver_name: "ttyAM",
+#ifdef CONFIG_DEVFS_FS
+ dev_name: "ttyAM%d",
+#else
+ dev_name: "ttyAM",
+#endif
+ major: SERIAL_AMBA_MAJOR,
+ minor: SERIAL_AMBA_MINOR,
+ nr: UART_NR,
+ cons: AMBA_CONSOLE,
+};
+
+static int __init ambauart_init(void)
+{
+ int ret;
+
+ printk(KERN_INFO "Serial: AMBA driver $Revision: 1.35 $\n");
+
+ ret = uart_register_driver(&amba_reg);
+ if (ret == 0) {
+ int i;
+
+ for (i = 0; i < UART_NR; i++)
+ uart_add_one_port(&amba_reg, &amba_ports[i].port);
+ }
+ return ret;
+}
+
+static void __exit ambauart_exit(void)
+{
+ int i;
+
+ for (i = 0; i < UART_NR; i++)
+ uart_remove_one_port(&amba_reg, &amba_ports[i].port);
+
+ uart_unregister_driver(&amba_reg);
+}
+
+module_init(ambauart_init);
+module_exit(ambauart_exit);
+
+EXPORT_NO_SYMBOLS;
+
+MODULE_AUTHOR("ARM Ltd/Deep Blue Solutions Ltd");
+MODULE_DESCRIPTION("ARM AMBA serial port driver $Revision: 1.35 $");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * linux/drivers/char/serial_anakin.c
+ *
+ * Based on driver for AMBA serial ports, by ARM Limited,
+ * Deep Blue Solutions Ltd., Linus Torvalds and Theodore Ts'o.
+ *
+ * Copyright (C) 2001 Aleph One Ltd. for Acunia N.V.
+ *
+ * Copyright (C) 2001 Blue Mug, Inc. for Acunia N.V.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Changelog:
+ * 20-Apr-2001 TTC Created
+ * 05-May-2001 W/TTC Updated for serial_core.c
+ * 27-Jun-2001 jonm Minor changes; add mctrl support, switch to
+ * SA_INTERRUPT. Works reliably now. No longer requires
+ * changes to the serial_core API.
+ *
+ * $Id: serial_anakin.c,v 1.27 2002/07/20 17:10:03 rmk Exp $
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/circ_buf.h>
+#include <linux/serial.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+
+#include <linux/serial_core.h>
+
+#include <asm/arch/serial_reg.h>
+
+#define UART_NR 5
+
+#define SERIAL_ANAKIN_NAME "ttyAN"
+#define SERIAL_ANAKIN_MAJOR 204
+#define SERIAL_ANAKIN_MINOR 32
+
+static unsigned int txenable[NR_IRQS]; /* Software interrupt register */
+
+static inline unsigned int
+anakin_in(struct uart_port *port, unsigned int offset)
+{
+ return __raw_readl(port->base + offset);
+}
+
+static inline void
+anakin_out(struct uart_port *port, unsigned int offset, unsigned int value)
+{
+ __raw_writel(value, port->base + offset);
+}
+
+static void
+anakin_stop_tx(struct uart_port *port, unsigned int tty_stop)
+{
+ txenable[port->irq] = 0;
+}
+
+static inline void
+anakin_transmit_buffer(struct uart_port *port)
+{
+ struct circ_buf *xmit = &port->info->xmit;
+
+ while (!(anakin_in(port, 0x10) & TXEMPTY));
+ anakin_out(port, 0x14, xmit->buf[xmit->tail]);
+ anakin_out(port, 0x18, anakin_in(port, 0x18) | SENDREQUEST);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE-1);
+ port->icount.tx++;
+
+ if (uart_circ_empty(xmit))
+ anakin_stop_tx(port, 0);
+}
+
+static inline void
+anakin_transmit_x_char(struct uart_port *port)
+{
+ anakin_out(port, 0x14, port->x_char);
+ anakin_out(port, 0x18, anakin_in(port, 0x18) | SENDREQUEST);
+ port->icount.tx++;
+ port->x_char = 0;
+}
+
+static void
+anakin_start_tx(struct uart_port *port, unsigned int tty_start)
+{
+ unsigned int flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ // is it this... or below
+ if (!txenable[port->irq]) {
+ txenable[port->irq] = TXENABLE;
+
+ if ((anakin_in(port, 0x10) & TXEMPTY)) {
+ anakin_transmit_buffer(port);
+ }
+ }
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void
+anakin_stop_rx(struct uart_port *port)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ while (anakin_in(port, 0x10) & RXRELEASE)
+ anakin_in(port, 0x14);
+ anakin_out(port, 0x18, anakin_in(port, 0x18) | BLOCKRX);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void
+anakin_enable_ms(struct uart_port *port)
+{
+}
+
+static inline void
+anakin_rx_chars(struct uart_port *port)
+{
+ unsigned int ch;
+ struct tty_struct *tty = port->info->tty;
+
+ if (!(anakin_in(port, 0x10) & RXRELEASE))
+ return;
+
+ ch = anakin_in(port, 0x14) & 0xff;
+
+ if (tty->flip.count < TTY_FLIPBUF_SIZE) {
+ *tty->flip.char_buf_ptr++ = ch;
+ *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
+ port->icount.rx++;
+ tty->flip.count++;
+ }
+ tty_flip_buffer_push(tty);
+}
+
+static inline void
+anakin_overrun_chars(struct uart_port *port)
+{
+ unsigned int ch;
+
+ ch = anakin_in(port, 0x14);
+ port->icount.overrun++;
+}
+
+static inline void
+anakin_tx_chars(struct uart_port *port)
+{
+ struct circ_buf *xmit = &port->info->xmit;
+
+ if (port->x_char) {
+ anakin_transmit_x_char(port);
+ return;
+ }
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ anakin_stop_tx(port, 0);
+ return;
+ }
+
+ anakin_transmit_buffer(port);
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_event(port, EVT_WRITE_WAKEUP);
+}
+
+static void
+anakin_int(int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned int status;
+ struct uart_port *port = dev_id;
+
+ status = anakin_in(port, 0x1c);
+
+ if (status & RX)
+ anakin_rx_chars(port);
+
+ if (status & OVERRUN)
+ anakin_overrun_chars(port);
+
+ if (txenable[port->irq] && (status & TX))
+ anakin_tx_chars(port);
+}
+
+static unsigned int
+anakin_tx_empty(struct uart_port *port)
+{
+ return anakin_in(port, 0x10) & TXEMPTY ? TIOCSER_TEMT : 0;
+}
+
+static unsigned int
+anakin_get_mctrl(struct uart_port *port)
+{
+ unsigned int status = 0;
+
+ status |= (anakin_in(port, 0x10) & CTS ? TIOCM_CTS : 0);
+ status |= (anakin_in(port, 0x18) & DCD ? TIOCM_CAR : 0);
+ status |= (anakin_in(port, 0x18) & DTR ? TIOCM_DTR : 0);
+ status |= (anakin_in(port, 0x18) & RTS ? TIOCM_RTS : 0);
+
+ return status;
+}
+
+static void
+anakin_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ unsigned int status;
+
+ status = anakin_in(port, 0x18);
+
+ if (mctrl & TIOCM_RTS)
+ status |= RTS;
+ else
+ status &= ~RTS;
+
+ if (mctrl & TIOCM_CAR)
+ status |= DCD;
+ else
+ status &= ~DCD;
+
+ anakin_out(port, 0x18, status);
+}
+
+static void
+anakin_break_ctl(struct uart_port *port, int break_state)
+{
+ unsigned long flags;
+ unsigned int status;
+
+ spin_lock_irqsave(&port->lock, flags);
+ status = anakin_in(port, 0x20);
+
+ if (break_state == -1)
+ status |= SETBREAK;
+ else
+ status &= ~SETBREAK;
+
+ anakin_out(port, 0x20, status);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static int anakin_startup(struct uart_port *port)
+{
+ int retval;
+ unsigned int read,write;
+
+ /*
+ * Allocate the IRQ
+ */
+ retval = request_irq(port->irq, anakin_int, SA_INTERRUPT,
+ "serial_anakin", port);
+ if (retval)
+ return retval;
+
+ /*
+ * initialise the old status of the modem signals
+ */
+ port->old_status = 0;
+
+ /*
+ * Finally, disable IRQ and softIRQs for first byte)
+ */
+ txenable[port->irq] = 0;
+ read = anakin_in(port, 0x18);
+ write = (read & ~(RTS | DTR | BLOCKRX)) | IRQENABLE;
+ anakin_out(port, 0x18, write);
+
+ return 0;
+}
+
+static void anakin_shutdown(struct uart_port *port)
+{
+ /*
+ * Free the interrupt
+ */
+ free_irq(port->irq, port);
+
+ /*
+ * disable all interrupts, disable the port
+ */
+ anakin_out(port, 0x18, anakin_in(port, 0x18) & ~IRQENABLE);
+}
+
+static void
+anakin_change_speed(struct uart_port *port, unsigned int cflag,
+ unsigned int iflag, unsigned int quot)
+{
+ unsigned int flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ while (!(anakin_in(port, 0x10) & TXEMPTY));
+ anakin_out(port, 0x10, (anakin_in(port, 0x10) & ~PRESCALER)
+ | (quot << 3));
+
+ //parity always set to none
+ anakin_out(port, 0x18, anakin_in(port, 0x18) & ~PARITY);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static const char *anakin_type(struct port *port)
+{
+ return port->type == PORT_ANAKIN ? "ANAKIN" : NULL;
+}
+
+static struct uart_ops anakin_pops = {
+ tx_empty: anakin_tx_empty,
+ set_mctrl: anakin_set_mctrl,
+ get_mctrl: anakin_get_mctrl,
+ stop_tx: anakin_stop_tx,
+ start_tx: anakin_start_tx,
+ stop_rx: anakin_stop_rx,
+ enable_ms: anakin_enable_ms,
+ break_ctl: anakin_break_ctl,
+ startup: anakin_startup,
+ shutdown: anakin_shutdown,
+ change_speed: anakin_change_speed,
+ type: anakin_type,
+};
+
+static struct uart_port anakin_ports[UART_NR] = {
+ {
+ base: IO_BASE + UART0,
+ irq: IRQ_UART0,
+ uartclk: 3686400,
+ fifosize: 0,
+ ops: &anakin_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ line: 0,
+ },
+ {
+ base: IO_BASE + UART1,
+ irq: IRQ_UART1,
+ uartclk: 3686400,
+ fifosize: 0,
+ ops: &anakin_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ line: 1,
+ },
+ {
+ base: IO_BASE + UART2,
+ irq: IRQ_UART2,
+ uartclk: 3686400,
+ fifosize: 0,
+ ops: &anakin_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ line: 2,
+ },
+ {
+ base: IO_BASE + UART3,
+ irq: IRQ_UART3,
+ uartclk: 3686400,
+ fifosize: 0,
+ ops: &anakin_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ line: 3,
+ },
+ {
+ base: IO_BASE + UART4,
+ irq: IRQ_UART4,
+ uartclk: 3686400,
+ fifosize: 0,
+ ops: &anakin_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ line: 4,
+ },
+};
+
+
+#ifdef CONFIG_SERIAL_ANAKIN_CONSOLE
+
+static void
+anakin_console_write(struct console *co, const char *s, unsigned int count)
+{
+ struct uart_port *port = &anakin_ports[co->index];
+ unsigned int flags, status, i;
+
+ /*
+ * First save the status then disable the interrupts
+ */
+ local_irq_save(flags);
+ status = anakin_in(port, 0x18);
+ anakin_out(port, 0x18, status & ~IRQENABLE);
+ local_irq_restore(flags);
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++, s++) {
+ while (!(anakin_in(port, 0x10) & TXEMPTY));
+
+ /*
+ * Send the character out.
+ * If a LF, also do CR...
+ */
+ anakin_out(port, 0x14, *s);
+ anakin_out(port, 0x18, anakin_in(port, 0x18) | SENDREQUEST);
+
+ if (*s == 10) {
+ while (!(anakin_in(port, 0x10) & TXEMPTY));
+ anakin_out(port, 0x14, 13);
+ anakin_out(port, 0x18, anakin_in(port, 0x18)
+ | SENDREQUEST);
+ }
+ }
+
+ /*
+ * Finally, wait for transmitter to become empty
+ * and restore the interrupts
+ */
+ while (!(anakin_in(port, 0x10) & TXEMPTY));
+
+ if (status & IRQENABLE) {
+ local_irq_save(flags);
+ anakin_out(port, 0x18, anakin_in(port, 0x18) | IRQENABLE);
+ local_irq_restore(flags);
+ }
+}
+
+static kdev_t
+anakin_console_device(struct console *co)
+{
+ return mk_kdev(SERIAL_ANAKIN_MAJOR, SERIAL_ANAKIN_MINOR + co->index);
+}
+
+/*
+ * Read the current UART setup.
+ */
+static void __init
+anakin_console_get_options(struct uart_port *port, int *baud, int *parity, int *bits)
+{
+ int paritycode;
+
+ *baud = GETBAUD (anakin_in(port, 0x10) & PRESCALER);
+ paritycode = GETPARITY(anakin_in(port, 0x18) & PARITY);
+ switch (paritycode) {
+ case NONEPARITY: *parity = 'n'; break;
+ case ODDPARITY: *parity = 'o'; break;
+ case EVENPARITY: *parity = 'e'; break;
+ }
+ *bits = 8;
+}
+
+static int __init
+anakin_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = CONFIG_ANAKIN_DEFAULT_BAUDRATE;
+ int bits = 8;
+ int parity = 'n';
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ if (co->index >= UART_NR)
+ co->index = 0;
+ port = &anakin_ports[co->index];
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits);
+ else
+ anakin_console_get_options(port, &baud, &parity, &bits);
+
+ return uart_set_options(port, co, baud, parity, bits);
+}
+
+static struct console anakin_console = {
+ name: SERIAL_ANAKIN_NAME,
+ write: anakin_console_write,
+ device: anakin_console_device,
+ setup: anakin_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+};
+
+void __init
+anakin_console_init(void)
+{
+ register_console(&anakin_console);
+}
+
+#define ANAKIN_CONSOLE &anakin_console
+#else
+#define ANAKIN_CONSOLE NULL
+#endif
+
+static struct uart_register anakin_reg = {
+ driver_name: SERIAL_ANAKIN_NAME,
+ dev_name: SERIAL_ANAKIN_NAME,
+ major: SERIAL_ANAKIN_MAJOR,
+ minor: SERIAL_ANAKIN_MINOR,
+ nr: UART_NR,
+ cons: ANAKIN_CONSOLE,
+};
+
+static int __init
+anakin_init(void)
+{
+ int ret;
+
+ printk(KERN_INFO "Serial: Anakin driver $Revision: 1.27 $\n");
+
+ ret = uart_register_driver(&anakin_reg);
+ if (ret == 0) {
+ int i;
+
+ for (i = 0; i < UART_NR; i++)
+ uart_add_one_port(&anakin_reg, &anakin_ports[i]);
+ }
+ return ret;
+}
+
+__initcall(anakin_init);
+
+MODULE_DESCRIPTION("Anakin serial driver");
+MODULE_AUTHOR("Tak-Shing Chan <chan@aleph1.co.uk>");
+MODULE_SUPPORTED_DEVICE("ttyAN");
+MODULE_LICENSE("GPL");
+
+EXPORT_NO_SYMBOLS;
--- /dev/null
+/*
+ * linux/drivers/char/serial_clps711x.c
+ *
+ * Driver for CLPS711x serial ports
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * Copyright 1999 ARM Limited
+ * Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * $Id: serial_clps711x.c,v 1.38 2002/07/21 08:57:55 rmk Exp $
+ *
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/circ_buf.h>
+#include <linux/serial.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/spinlock.h>
+
+#include <asm/bitops.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+#if defined(CONFIG_SERIAL_CLPS711X_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/serial_core.h>
+
+#include <asm/hardware/clps7111.h>
+
+#define UART_NR 2
+
+#ifndef CONFIG_SERIAL_CLPS711X_OLD_NAME
+#define SERIAL_CLPS711X_NAME "ttyCL"
+#define SERIAL_CLPS711X_MAJOR 204
+#define SERIAL_CLPS711X_MINOR 40
+#define SERIAL_CLPS711X_NR UART_NR
+
+#else
+#warning The old names/device number for this driver if compatabity is needed
+#define SERIAL_CLPS711X_NAME "ttyAM"
+#define SERIAL_CLPS711X_MAJOR 204
+#define SERIAL_CLPS711X_MINOR 16
+#define SERIAL_CLPS711X_NR UART_NR
+
+#endif
+
+/*
+ * We use the relevant SYSCON register as a base address for these ports.
+ */
+#define UBRLCR(port) ((port)->iobase + UBRLCR1 - SYSCON1)
+#define UARTDR(port) ((port)->iobase + UARTDR1 - SYSCON1)
+#define SYSFLG(port) ((port)->iobase + SYSFLG1 - SYSCON1)
+#define SYSCON(port) ((port)->iobase + SYSCON1 - SYSCON1)
+
+#define TX_IRQ(port) ((port)->irq)
+#define RX_IRQ(port) ((port)->irq + 1)
+
+#define UART_ANY_ERR (UARTDR_FRMERR | UARTDR_PARERR | UARTDR_OVERR)
+
+#define tx_enabled(port) ((port)->unused[0])
+
+static void
+__clps711xuart_stop_tx(struct uart_port *port)
+{
+ if (tx_enabled(port)) {
+ disable_irq(TX_IRQ(port));
+ tx_enabled(port) = 0;
+ }
+}
+
+static void
+clps711xuart_stop_tx(struct uart_port *port, unsigned int tty_stop)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ __clps711xuart_stop_tx(port);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void
+clps711xuart_start_tx(struct uart_port *port, unsigned int tty_start)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ if (!tx_enabled(port)) {
+ enable_irq(TX_IRQ(port));
+ tx_enabled(port) = 1;
+ }
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void clps711xuart_stop_rx(struct uart_port *port)
+{
+ disable_irq(RX_IRQ(port));
+}
+
+static void clps711xuart_enable_ms(struct uart_port *port)
+{
+}
+
+static void clps711xuart_int_rx(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uart_port *port = dev_id;
+ struct tty_struct *tty = port->info->tty;
+ unsigned int status, ch, flg, ignored = 0;
+
+ status = clps_readl(SYSFLG(port));
+ while (!(status & SYSFLG_URXFE)) {
+ ch = clps_readl(UARTDR(port));
+
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+ port->icount.rx++;
+
+ flg = TTY_NORMAL;
+
+ /*
+ * Note that the error handling code is
+ * out of the main execution path
+ */
+ if (ch & UART_ANY_ERR)
+ goto handle_error;
+
+ if (uart_handle_sysrq_char(port, ch, regs))
+ goto ignore_char;
+
+ error_return:
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ ignore_char:
+ status = clps_readl(SYSFLG(port));
+ }
+ out:
+ tty_flip_buffer_push(tty);
+ return;
+
+ handle_error:
+ if (ch & UARTDR_PARERR)
+ port->icount.parity++;
+ else if (ch & UARTDR_FRMERR)
+ port->icount.frame++;
+ if (ch & UARTDR_OVERR)
+ port->icount.overrun++;
+
+ if (ch & port->ignore_status_mask) {
+ if (++ignored > 100)
+ goto out;
+ goto ignore_char;
+ }
+ ch &= port->read_status_mask;
+
+ if (ch & UARTDR_PARERR)
+ flg = TTY_PARITY;
+ else if (ch & UARTDR_FRMERR)
+ flg = TTY_FRAME;
+
+ if (ch & UARTDR_OVERR) {
+ /*
+ * CHECK: does overrun affect the current character?
+ * ASSUMPTION: it does not.
+ */
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+ ch = 0;
+ flg = TTY_OVERRUN;
+ }
+#ifdef SUPPORT_SYSRQ
+ port->sysrq = 0;
+#endif
+ goto error_return;
+}
+
+static void clps711xuart_int_tx(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uart_port *port = dev_id;
+ struct circ_buf *xmit = &port->info->xmit;
+ int count;
+
+ if (port->x_char) {
+ clps_writel(port->x_char, UARTDR(port));
+ port->icount.tx++;
+ port->x_char = 0;
+ return;
+ }
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ __clps711xuart_stop_tx(port);
+ return;
+ }
+
+ count = port->fifosize >> 1;
+ do {
+ clps_writel(xmit->buf[xmit->tail], UARTDR(port));
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
+ } while (--count > 0);
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_event(port, EVT_WRITE_WAKEUP);
+
+ if (uart_circ_empty(xmit))
+ __clps711xuart_stop_tx(port);
+}
+
+static unsigned int clps711xuart_tx_empty(struct uart_port *port)
+{
+ unsigned int status = clps_readl(SYSFLG(port));
+ return status & SYSFLG_UBUSY ? 0 : TIOCSER_TEMT;
+}
+
+static unsigned int clps711xuart_get_mctrl(struct uart_port *port)
+{
+ unsigned int port_addr;
+ unsigned int result = 0;
+ unsigned int status;
+
+ port_addr = SYSFLG(port);
+ if (port_addr == SYSFLG1) {
+ status = clps_readl(SYSFLG1);
+ if (status & SYSFLG1_DCD)
+ result |= TIOCM_CAR;
+ if (status & SYSFLG1_DSR)
+ result |= TIOCM_DSR;
+ if (status & SYSFLG1_CTS)
+ result |= TIOCM_CTS;
+ }
+
+ return result;
+}
+
+static void
+clps711xuart_set_mctrl_null(struct uart_port *port, unsigned int mctrl)
+{
+}
+
+static void clps711xuart_break_ctl(struct uart_port *port, int break_state)
+{
+ unsigned long flags;
+ unsigned int ubrlcr;
+
+ spin_lock_irqsave(&port->lock, flags);
+ ubrlcr = clps_readl(UBRLCR(port));
+ if (break_state == -1)
+ ubrlcr |= UBRLCR_BREAK;
+ else
+ ubrlcr &= ~UBRLCR_BREAK;
+ clps_writel(ubrlcr, UBRLCR(port));
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static int clps711xuart_startup(struct uart_port *port)
+{
+ unsigned int syscon;
+ int retval;
+
+ tx_enabled(port) = 1;
+
+ /*
+ * Allocate the IRQs
+ */
+ retval = request_irq(TX_IRQ(port), clps711xuart_int_tx, 0,
+ "clps711xuart_tx", port);
+ if (retval)
+ return retval;
+
+ retval = request_irq(RX_IRQ(port), clps711xuart_int_rx, 0,
+ "clps711xuart_rx", port);
+ if (retval) {
+ free_irq(TX_IRQ(port), port);
+ return retval;
+ }
+
+ /*
+ * enable the port
+ */
+ syscon = clps_readl(SYSCON(port));
+ syscon |= SYSCON_UARTEN;
+ clps_writel(syscon, SYSCON(port));
+
+ return 0;
+}
+
+static void clps711xuart_shutdown(struct uart_port *port)
+{
+ unsigned int ubrlcr, syscon;
+
+ /*
+ * Free the interrupt
+ */
+ free_irq(TX_IRQ(port), port); /* TX interrupt */
+ free_irq(RX_IRQ(port), port); /* RX interrupt */
+
+ /*
+ * disable the port
+ */
+ syscon = clps_readl(SYSCON(port));
+ syscon &= ~SYSCON_UARTEN;
+ clps_writel(syscon, SYSCON(port));
+
+ /*
+ * disable break condition and fifos
+ */
+ ubrlcr = clps_readl(UBRLCR(port));
+ ubrlcr &= ~(UBRLCR_FIFOEN | UBRLCR_BREAK);
+ clps_writel(ubrlcr, UBRLCR(port));
+}
+
+static void
+clps711xuart_change_speed(struct uart_port *port, unsigned int cflag,
+ unsigned int iflag, unsigned int quot)
+{
+ unsigned int ubrlcr;
+ unsigned long flags;
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ case CS5:
+ ubrlcr = UBRLCR_WRDLEN5;
+ break;
+ case CS6:
+ ubrlcr = UBRLCR_WRDLEN6;
+ break;
+ case CS7:
+ ubrlcr = UBRLCR_WRDLEN7;
+ break;
+ default: // CS8
+ ubrlcr = UBRLCR_WRDLEN8;
+ break;
+ }
+ if (cflag & CSTOPB)
+ ubrlcr |= UBRLCR_XSTOP;
+ if (cflag & PARENB) {
+ ubrlcr |= UBRLCR_PRTEN;
+ if (!(cflag & PARODD))
+ ubrlcr |= UBRLCR_EVENPRT;
+ }
+ if (port->fifosize > 1)
+ ubrlcr |= UBRLCR_FIFOEN;
+
+ port->read_status_mask = UARTDR_OVERR;
+ if (iflag & INPCK)
+ port->read_status_mask |= UARTDR_PARERR | UARTDR_FRMERR;
+
+ /*
+ * Characters to ignore
+ */
+ port->ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= UARTDR_FRMERR | UARTDR_PARERR;
+ if (iflag & IGNBRK) {
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns to (for real raw support).
+ */
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= UARTDR_OVERR;
+ }
+
+ quot -= 1;
+
+ /* first, disable everything */
+ spin_lock_irqsave(&port->lock, flags);
+
+ clps_writel(ubrlcr | quot, UBRLCR(port));
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static const char *clps711xuart_type(struct uart_port *port)
+{
+ return port->type == PORT_CLPS711X ? "CLPS711x" : NULL;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void clps711xuart_config_port(struct uart_port *port, int flags)
+{
+ if (flags & UART_CONFIG_TYPE)
+ port->type = PORT_CLPS711X;
+}
+
+static void clps711xuart_release_port(struct uart_port *port)
+{
+}
+
+static int clps711xuart_request_port(struct uart_port *port)
+{
+ return 0;
+}
+
+static struct uart_ops clps711x_pops = {
+ tx_empty: clps711xuart_tx_empty,
+ set_mctrl: clps711xuart_set_mctrl_null,
+ get_mctrl: clps711xuart_get_mctrl,
+ stop_tx: clps711xuart_stop_tx,
+ start_tx: clps711xuart_start_tx,
+ stop_rx: clps711xuart_stop_rx,
+ enable_ms: clps711xuart_enable_ms,
+ break_ctl: clps711xuart_break_ctl,
+ startup: clps711xuart_startup,
+ shutdown: clps711xuart_shutdown,
+ change_speed: clps711xuart_change_speed,
+ type: clps711xuart_type,
+ config_port: clps711xuart_config_port,
+ release_port: clps711xuart_release_port,
+ request_port: clps711xuart_request_port,
+};
+
+static struct uart_port clps711x_ports[UART_NR] = {
+ {
+ iobase: SYSCON1,
+ irq: IRQ_UTXINT1, /* IRQ_URXINT1, IRQ_UMSINT */
+ uartclk: 3686400,
+ fifosize: 16,
+ ops: &clps711x_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ },
+ {
+ iobase: SYSCON2,
+ irq: IRQ_UTXINT2, /* IRQ_URXINT2 */
+ uartclk: 3686400,
+ fifosize: 16,
+ ops: &clps711x_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+ }
+};
+
+#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
+/*
+ * Print a string to the serial port trying not to disturb
+ * any possible real use of the port...
+ *
+ * The console_lock must be held when we get here.
+ *
+ * Note that this is called with interrupts already disabled
+ */
+static void
+clps711xuart_console_write(struct console *co, const char *s,
+ unsigned int count)
+{
+ struct uart_port *port = clps711x_ports + co->index;
+ unsigned int status, syscon;
+ int i;
+
+ /*
+ * Ensure that the port is enabled.
+ */
+ syscon = clps_readl(SYSCON(port));
+ clps_writel(syscon | SYSCON_UARTEN, SYSCON(port));
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++) {
+ do {
+ status = clps_readl(SYSFLG(port));
+ } while (status & SYSFLG_UTXFF);
+ clps_writel(s[i], UARTDR(port));
+ if (s[i] == '\n') {
+ do {
+ status = clps_readl(SYSFLG(port));
+ } while (status & SYSFLG_UTXFF);
+ clps_writel('\r', UARTDR(port));
+ }
+ }
+
+ /*
+ * Finally, wait for transmitter to become empty
+ * and restore the uart state.
+ */
+ do {
+ status = clps_readl(SYSFLG(port));
+ } while (status & SYSFLG_UBUSY);
+
+ clps_writel(syscon, SYSCON(port));
+}
+
+static kdev_t clps711xuart_console_device(struct console *co)
+{
+ return mk_kdev(SERIAL_CLPS711X_MAJOR, SERIAL_CLPS711X_MINOR + co->index);
+}
+
+static void __init
+clps711xuart_console_get_options(struct uart_port *port, int *baud,
+ int *parity, int *bits)
+{
+ if (clps_readl(SYSCON(port)) & SYSCON_UARTEN) {
+ unsigned int ubrlcr, quot;
+
+ ubrlcr = clps_readl(UBRLCR(port));
+
+ *parity = 'n';
+ if (ubrlcr & UBRLCR_PRTEN) {
+ if (ubrlcr & UBRLCR_EVENPRT)
+ *parity = 'e';
+ else
+ *parity = 'o';
+ }
+
+ if ((ubrlcr & UBRLCR_WRDLEN_MASK) == UBRLCR_WRDLEN7)
+ *bits = 7;
+ else
+ *bits = 8;
+
+ quot = ubrlcr & UBRLCR_BAUD_MASK;
+ *baud = port->uartclk / (16 * (quot + 1));
+ }
+}
+
+static int __init clps711xuart_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 38400;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ port = uart_get_console(clps711x_ports, UART_NR, co);
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ clps711xuart_console_get_options(port, &baud, &parity, &bits);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct console clps711x_console = {
+ name: SERIAL_CLPS711X_NAME,
+ write: clps711xuart_console_write,
+ device: clps711xuart_console_device,
+ setup: clps711xuart_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+};
+
+void __init clps711xuart_console_init(void)
+{
+ register_console(&clps711x_console);
+}
+
+#define CLPS711X_CONSOLE &clps711x_console
+#else
+#define CLPS711X_CONSOLE NULL
+#endif
+
+static struct uart_driver clps711x_reg = {
+ driver_name: "ttyCL",
+#ifdef CONFIG_DEVFS_FS
+ dev_name: SERIAL_CLPS711X_NAME,
+#else
+ dev_name: SERIAL_CLPS711X_NAME,
+#endif
+
+ major: SERIAL_CLPS711X_MAJOR,
+ minor: SERIAL_CLPS711X_MINOR,
+ nr: UART_NR,
+
+ cons: CLPS711X_CONSOLE,
+};
+
+static int __init clps711xuart_init(void)
+{
+ int ret, i;
+
+ printk(KERN_INFO "Serial: CLPS711x driver $Revision: 1.38 $\n");
+
+ ret = uart_register_driver(&clps711x_reg);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < UART_NR; i++)
+ uart_add_one_port(&clps711x_reg, &clps711x_ports[i]);
+
+ return 0;
+}
+
+static void __exit clps711xuart_exit(void)
+{
+ int i;
+
+ for (i = 0; i < UART_NR; i++)
+ uart_remove_one_port(&clps711x_reg, &clps711x_ports[i]);
+
+ uart_unregister_driver(&clps711x_reg);
+}
+
+module_init(clps711xuart_init);
+module_exit(clps711xuart_exit);
+
+EXPORT_NO_SYMBOLS;
+
+MODULE_AUTHOR("Deep Blue Solutions Ltd");
+MODULE_DESCRIPTION("CLPS-711x generic serial driver $Revision: 1.38 $");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * linux/drivers/char/serial_core.c
+ *
+ * Driver core for serial ports
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * Copyright 1999 ARM Limited
+ * Copyright (C) 2000-2001 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * $Id: serial_core.c,v 1.89 2002/07/20 18:07:32 rmk Exp $
+ *
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/circ_buf.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/pm.h>
+#include <linux/serial_core.h>
+#include <linux/smp_lock.h>
+#include <linux/serial.h> /* for serial_state and serial_icounter_struct */
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+
+#undef DEBUG
+#ifdef DEBUG
+#define DPRINTK(x...) printk(x)
+#else
+#define DPRINTK(x...) do { } while (0)
+#endif
+
+#ifndef CONFIG_PM
+#define pm_access(pm) do { } while (0)
+#define pm_unregister(pm) do { } while (0)
+#endif
+
+/*
+ * This is used to lock changes in serial line configuration.
+ */
+static DECLARE_MUTEX(port_sem);
+
+#define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8)
+
+static void uart_change_speed(struct uart_info *info, struct termios *old_termios);
+static void uart_wait_until_sent(struct tty_struct *tty, int timeout);
+
+/*
+ * This routine is used by the interrupt handler to schedule processing in
+ * the software interrupt portion of the driver.
+ */
+void uart_event(struct uart_port *port, int event)
+{
+ struct uart_info *info = port->info;
+
+ set_bit(0, &info->event);
+ tasklet_schedule(&info->tlet);
+}
+
+static void uart_stop(struct tty_struct *tty)
+{
+ struct uart_info *info = tty->driver_data;
+ struct uart_port *port = info->port;
+
+ port->ops->stop_tx(port, 1);
+}
+
+static void __uart_start(struct tty_struct *tty)
+{
+ struct uart_info *info = tty->driver_data;
+ struct uart_port *port = info->port;
+
+ if (!uart_circ_empty(&info->xmit) && info->xmit.buf &&
+ !tty->stopped && !tty->hw_stopped)
+ port->ops->start_tx(port, 1);
+}
+
+static void uart_start(struct tty_struct *tty)
+{
+ struct uart_info *info = tty->driver_data;
+ unsigned long flags;
+
+ pm_access(info->state->pm);
+
+ spin_lock_irqsave(&info->port->lock, flags);
+ __uart_start(tty);
+ spin_unlock_irqrestore(&info->port->lock, flags);
+}
+
+static void uart_tasklet_action(unsigned long data)
+{
+ struct uart_info *info = (struct uart_info *)data;
+ struct tty_struct *tty;
+
+ tty = info->tty;
+ if (!tty || !test_and_clear_bit(EVT_WRITE_WAKEUP, &info->event))
+ return;
+
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+ tty->ldisc.write_wakeup)
+ (tty->ldisc.write_wakeup)(tty);
+ wake_up_interruptible(&tty->write_wait);
+}
+
+static inline void
+uart_update_mctrl(struct uart_port *port, unsigned int set, unsigned int clear)
+{
+ unsigned long flags;
+ unsigned int old;
+
+ spin_lock_irqsave(&port->lock, flags);
+ old = port->mctrl;
+ port->mctrl = (old & ~clear) | set;
+ if (old != port->mctrl)
+ port->ops->set_mctrl(port, port->mctrl);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+#define uart_set_mctrl(port,set) uart_update_mctrl(port,set,0)
+#define uart_clear_mctrl(port,clear) uart_update_mctrl(port,0,clear)
+
+static inline void uart_update_altspeed(struct uart_info *info)
+{
+ unsigned int flags = info->port->flags & UPF_SPD_MASK;
+
+ if (flags == UPF_SPD_HI)
+ info->tty->alt_speed = 57600;
+ if (flags == UPF_SPD_VHI)
+ info->tty->alt_speed = 115200;
+ if (flags == UPF_SPD_SHI)
+ info->tty->alt_speed = 230400;
+ if (flags == UPF_SPD_WARP)
+ info->tty->alt_speed = 460800;
+}
+
+/*
+ * Startup the port. This will be called once per open. All calls
+ * will be serialised by the global port semaphore.
+ */
+static int uart_startup(struct uart_info *info, int init_hw)
+{
+ struct uart_port *port = info->port;
+ unsigned long page;
+ int retval = 0;
+
+ if (info->flags & UIF_INITIALIZED)
+ return 0;
+
+ /*
+ * Set the TTY IO error marker - we will only clear this
+ * once we have successfully opened the port. Also set
+ * up the tty->alt_speed kludge
+ */
+ if (info->tty) {
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+ uart_update_altspeed(info);
+ }
+
+ if (port->type == PORT_UNKNOWN)
+ return 0;
+
+ /*
+ * Initialise and allocate the transmit and temporary
+ * buffer.
+ */
+ if (!info->xmit.buf) {
+ page = get_zeroed_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ info->xmit.buf = (unsigned char *) page;
+ info->tmpbuf = info->xmit.buf + UART_XMIT_SIZE;
+ init_MUTEX(&info->tmpbuf_sem);
+ uart_circ_clear(&info->xmit);
+ }
+
+ port->mctrl = 0;
+
+ retval = port->ops->startup(port);
+ if (retval == 0) {
+ if (init_hw) {
+ /*
+ * Initialise the hardware port settings.
+ */
+ uart_change_speed(info, NULL);
+
+ /*
+ * Setup the RTS and DTR signals once the
+ * port is open and ready to respond.
+ */
+ if (info->tty->termios->c_cflag & CBAUD)
+ uart_set_mctrl(port, TIOCM_RTS | TIOCM_DTR);
+ }
+
+ info->flags |= UIF_INITIALIZED;
+
+ if (info->tty)
+ clear_bit(TTY_IO_ERROR, &info->tty->flags);
+ }
+
+ if (retval && capable(CAP_SYS_ADMIN))
+ retval = 0;
+
+ return retval;
+}
+
+/*
+ * This routine will shutdown a serial port; interrupts are disabled, and
+ * DTR is dropped if the hangup on close termio flag is on. Calls to
+ * uart_shutdown are serialised by port_sem.
+ */
+static void uart_shutdown(struct uart_info *info)
+{
+ struct uart_port *port = info->port;
+
+ if (!(info->flags & UIF_INITIALIZED))
+ return;
+
+ /*
+ * Turn off DTR and RTS early.
+ */
+ if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
+ uart_clear_mctrl(info->port, TIOCM_DTR | TIOCM_RTS);
+
+ /*
+ * clear delta_msr_wait queue to avoid mem leaks: we may free
+ * the irq here so the queue might never be woken up. Note
+ * that we won't end up waiting on delta_msr_wait again since
+ * any outstanding file descriptors should be pointing at
+ * hung_up_tty_fops now.
+ */
+ wake_up_interruptible(&info->delta_msr_wait);
+
+ /*
+ * Free the IRQ and disable the port.
+ */
+ port->ops->shutdown(port);
+
+ /*
+ * Ensure that the IRQ handler isn't running on another CPU.
+ */
+ synchronize_irq(port->irq);
+
+ /*
+ * Free the transmit buffer page.
+ */
+ if (info->xmit.buf) {
+ free_page((unsigned long)info->xmit.buf);
+ info->xmit.buf = NULL;
+ info->tmpbuf = NULL;
+ }
+
+ /*
+ * kill off our tasklet
+ */
+ tasklet_kill(&info->tlet);
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->flags &= ~UIF_INITIALIZED;
+}
+
+static inline
+unsigned int uart_calculate_quot(struct uart_info *info, unsigned int baud)
+{
+ struct uart_port *port = info->port;
+ unsigned int quot;
+
+ /* Special case: B0 rate */
+ if (baud == 0)
+ baud = 9600;
+
+ /* Old HI/VHI/custom speed handling */
+ if (baud == 38400 &&
+ ((port->flags & UPF_SPD_MASK) == UPF_SPD_CUST))
+ quot = info->state->custom_divisor;
+ else
+ quot = port->uartclk / (16 * baud);
+
+ return quot;
+}
+
+static void
+uart_change_speed(struct uart_info *info, struct termios *old_termios)
+{
+ struct uart_port *port = info->port;
+ unsigned int quot, cflag, bits, try;
+
+ /*
+ * If we have no tty, termios, or the port does not exist,
+ * then we can't set the parameters for this port.
+ */
+ if (!info->tty || !info->tty->termios || port->type == PORT_UNKNOWN)
+ return;
+
+ /*
+ * Set flags based on termios cflag
+ */
+ cflag = info->tty->termios->c_cflag;
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ case CS5:
+ bits = 7;
+ break;
+ case CS6:
+ bits = 8;
+ break;
+ case CS7:
+ bits = 9;
+ break;
+ default:
+ bits = 10;
+ break; // CS8
+ }
+
+ if (cflag & CSTOPB)
+ bits++;
+ if (cflag & PARENB)
+ bits++;
+
+ for (try = 0; try < 3; try ++) {
+ unsigned int baud;
+
+ /* Determine divisor based on baud rate */
+ baud = tty_get_baud_rate(info->tty);
+ quot = uart_calculate_quot(info, baud);
+ if (quot)
+ break;
+
+ /*
+ * Oops, the quotient was zero. Try again with
+ * the old baud rate if possible.
+ */
+ info->tty->termios->c_cflag &= ~CBAUD;
+ if (old_termios) {
+ info->tty->termios->c_cflag |=
+ (old_termios->c_cflag & CBAUD);
+ old_termios = NULL;
+ continue;
+ }
+
+ /*
+ * As a last resort, if the quotient is zero,
+ * default to 9600 bps
+ */
+ info->tty->termios->c_cflag |= B9600;
+ }
+
+ /*
+ * The total number of bits to be transmitted in the fifo.
+ */
+ bits = bits * port->fifosize;
+
+ /*
+ * Figure the timeout to send the above number of bits.
+ * Add .02 seconds of slop
+ */
+ port->timeout = (HZ * bits) / (port->uartclk / (16 * quot)) + HZ/50;
+
+ if (cflag & CRTSCTS)
+ info->flags |= UIF_CTS_FLOW;
+ else
+ info->flags &= ~UIF_CTS_FLOW;
+ if (cflag & CLOCAL)
+ info->flags &= ~UIF_CHECK_CD;
+ else
+ info->flags |= UIF_CHECK_CD;
+
+ port->ops->change_speed(port, cflag, info->tty->termios->c_iflag, quot);
+}
+
+static inline void
+__uart_put_char(struct uart_port *port, struct circ_buf *circ, unsigned char c)
+{
+ unsigned long flags;
+
+ if (!circ->buf)
+ return;
+
+ spin_lock_irqsave(&port->lock, flags);
+ if (uart_circ_chars_free(circ) != 0) {
+ circ->buf[circ->head] = c;
+ circ->head = (circ->head + 1) & (UART_XMIT_SIZE - 1);
+ }
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static inline int
+__uart_user_write(struct uart_port *port, struct circ_buf *circ,
+ const unsigned char *buf, int count)
+{
+ unsigned long flags;
+ int c, ret = 0;
+
+ if (down_interruptible(&port->info->tmpbuf_sem))
+ return -EINTR;
+
+ while (1) {
+ int c1;
+ c = CIRC_SPACE_TO_END(circ->head, circ->tail, UART_XMIT_SIZE);
+ if (count < c)
+ c = count;
+ if (c <= 0)
+ break;
+
+ c -= copy_from_user(port->info->tmpbuf, buf, c);
+ if (!c) {
+ if (!ret)
+ ret = -EFAULT;
+ break;
+ }
+ spin_lock_irqsave(&port->lock, flags);
+ c1 = CIRC_SPACE_TO_END(circ->head, circ->tail, UART_XMIT_SIZE);
+ if (c1 < c)
+ c = c1;
+ memcpy(circ->buf + circ->head, port->info->tmpbuf, c);
+ circ->head = (circ->head + c) & (UART_XMIT_SIZE - 1);
+ spin_unlock_irqrestore(&port->lock, flags);
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ up(&port->info->tmpbuf_sem);
+
+ return ret;
+}
+
+static inline int
+__uart_kern_write(struct uart_port *port, struct circ_buf *circ,
+ const unsigned char *buf, int count)
+{
+ unsigned long flags;
+ int c, ret = 0;
+
+ spin_lock_irqsave(&port->lock, flags);
+ while (1) {
+ c = CIRC_SPACE_TO_END(circ->head, circ->tail, UART_XMIT_SIZE);
+ if (count < c)
+ c = count;
+ if (c <= 0)
+ break;
+ memcpy(circ->buf + circ->head, buf, c);
+ circ->head = (circ->head + c) & (UART_XMIT_SIZE - 1);
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ return ret;
+}
+
+static void uart_put_char(struct tty_struct *tty, unsigned char ch)
+{
+ struct uart_info *info = tty->driver_data;
+
+ if (tty)
+ __uart_put_char(info->port, &info->xmit, ch);
+}
+
+static void uart_flush_chars(struct tty_struct *tty)
+{
+ uart_start(tty);
+}
+
+static int
+uart_write(struct tty_struct *tty, int from_user, const unsigned char * buf,
+ int count)
+{
+ struct uart_info *info = tty->driver_data;
+ int ret;
+
+ if (!tty || !info->xmit.buf)
+ return 0;
+
+ if (from_user)
+ ret = __uart_user_write(info->port, &info->xmit, buf, count);
+ else
+ ret = __uart_kern_write(info->port, &info->xmit, buf, count);
+
+ uart_start(tty);
+ return ret;
+}
+
+static int uart_write_room(struct tty_struct *tty)
+{
+ struct uart_info *info = tty->driver_data;
+
+ return uart_circ_chars_free(&info->xmit);
+}
+
+static int uart_chars_in_buffer(struct tty_struct *tty)
+{
+ struct uart_info *info = tty->driver_data;
+
+ return uart_circ_chars_pending(&info->xmit);
+}
+
+static void uart_flush_buffer(struct tty_struct *tty)
+{
+ struct uart_info *info = tty->driver_data;
+ unsigned long flags;
+
+ DPRINTK("uart_flush_buffer(%d) called\n",
+ MINOR(tty->device) - tty->driver.minor_start);
+
+ spin_lock_irqsave(&info->port->lock, flags);
+ uart_circ_clear(&info->xmit);
+ spin_unlock_irqrestore(&info->port->lock, flags);
+ wake_up_interruptible(&tty->write_wait);
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+ tty->ldisc.write_wakeup)
+ (tty->ldisc.write_wakeup)(tty);
+}
+
+/*
+ * This function is used to send a high-priority XON/XOFF character to
+ * the device
+ */
+static void uart_send_xchar(struct tty_struct *tty, char ch)
+{
+ struct uart_info *info = tty->driver_data;
+ struct uart_port *port = info->port;
+
+ if (port->ops->send_xchar)
+ port->ops->send_xchar(port, ch);
+ else {
+ port->x_char = ch;
+ if (ch)
+ port->ops->start_tx(port, 0);
+ }
+}
+
+static void uart_throttle(struct tty_struct *tty)
+{
+ struct uart_info *info = tty->driver_data;
+
+ if (I_IXOFF(tty))
+ uart_send_xchar(tty, STOP_CHAR(tty));
+
+ if (tty->termios->c_cflag & CRTSCTS)
+ uart_clear_mctrl(info->port, TIOCM_RTS);
+}
+
+static void uart_unthrottle(struct tty_struct *tty)
+{
+ struct uart_info *info = tty->driver_data;
+ struct uart_port *port = info->port;
+
+ if (I_IXOFF(tty)) {
+ if (port->x_char)
+ port->x_char = 0;
+ else
+ uart_send_xchar(tty, START_CHAR(tty));
+ }
+
+ if (tty->termios->c_cflag & CRTSCTS)
+ uart_set_mctrl(port, TIOCM_RTS);
+}
+
+static int uart_get_info(struct uart_info *info, struct serial_struct *retinfo)
+{
+ struct uart_state *state = info->state;
+ struct uart_port *port = info->port;
+ struct serial_struct tmp;
+
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.type = port->type;
+ tmp.line = port->line;
+ tmp.port = port->iobase;
+ if (HIGH_BITS_OFFSET)
+ tmp.port_high = port->iobase >> HIGH_BITS_OFFSET;
+ tmp.irq = port->irq;
+ tmp.flags = port->flags | info->flags;
+ tmp.xmit_fifo_size = port->fifosize;
+ tmp.baud_base = port->uartclk / 16;
+ tmp.close_delay = state->close_delay;
+ tmp.closing_wait = state->closing_wait;
+ tmp.custom_divisor = state->custom_divisor;
+ tmp.hub6 = port->hub6;
+ tmp.io_type = port->iotype;
+ tmp.iomem_reg_shift = port->regshift;
+ tmp.iomem_base = (void *)port->mapbase;
+
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return -EFAULT;
+ return 0;
+}
+
+static int
+uart_set_info(struct uart_info *info, struct serial_struct *newinfo)
+{
+ struct serial_struct new_serial;
+ struct uart_state *state = info->state;
+ struct uart_port *port = info->port;
+ unsigned long new_port;
+ unsigned int change_irq, change_port, old_flags;
+ unsigned int old_custom_divisor;
+ int retval = 0;
+
+ if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
+ return -EFAULT;
+
+ new_port = new_serial.port;
+ if (HIGH_BITS_OFFSET)
+ new_port += (unsigned long) new_serial.port_high << HIGH_BITS_OFFSET;
+
+ new_serial.irq = irq_cannonicalize(new_serial.irq);
+
+ /*
+ * This semaphore protects state->count. It is also
+ * very useful to prevent opens. Also, take the
+ * port configuration semaphore to make sure that a
+ * module insertion/removal doesn't change anything
+ * under us.
+ */
+ down(&port_sem);
+
+ change_irq = new_serial.irq != port->irq;
+
+ /*
+ * Since changing the 'type' of the port changes its resource
+ * allocations, we should treat type changes the same as
+ * IO port changes.
+ */
+ change_port = new_port != port->iobase ||
+ (unsigned long)new_serial.iomem_base != port->mapbase ||
+ new_serial.hub6 != port->hub6 ||
+ new_serial.io_type != port->iotype ||
+ new_serial.iomem_reg_shift != port->regshift ||
+ new_serial.type != port->type;
+
+ old_flags = port->flags;
+ old_custom_divisor = state->custom_divisor;
+
+ if (!capable(CAP_SYS_ADMIN)) {
+ retval = -EPERM;
+ if (change_irq || change_port ||
+ (new_serial.baud_base != port->uartclk / 16) ||
+ (new_serial.close_delay != state->close_delay) ||
+ (new_serial.closing_wait != state->closing_wait) ||
+ (new_serial.xmit_fifo_size != port->fifosize) ||
+ (((new_serial.flags ^ old_flags) & ~UPF_USR_MASK) != 0))
+ goto exit;
+ port->flags = ((port->flags & ~UPF_USR_MASK) |
+ (new_serial.flags & UPF_USR_MASK));
+ state->custom_divisor = new_serial.custom_divisor;
+ goto check_and_exit;
+ }
+
+ /*
+ * Ask the low level driver to verify the settings.
+ */
+ if (port->ops->verify_port)
+ retval = port->ops->verify_port(port, &new_serial);
+
+ if ((new_serial.irq >= NR_IRQS) || (new_serial.irq < 0) ||
+ (new_serial.baud_base < 9600))
+ retval = -EINVAL;
+
+ if (retval)
+ goto exit;
+
+ if (change_port || change_irq) {
+ retval = -EBUSY;
+
+ /*
+ * Make sure that we are the sole user of this port.
+ */
+ if (state->count > 1 || info->blocked_open != 0)
+ goto exit;
+
+ /*
+ * We need to shutdown the serial port at the old
+ * port/type/irq combination.
+ */
+ uart_shutdown(info);
+ }
+
+ if (change_port) {
+ unsigned long old_iobase, old_mapbase;
+ unsigned int old_type, old_iotype, old_hub6, old_shift;
+
+ old_iobase = port->iobase;
+ old_mapbase = port->mapbase;
+ old_type = port->type;
+ old_hub6 = port->hub6;
+ old_iotype = port->iotype;
+ old_shift = port->regshift;
+
+ /*
+ * Free and release old regions
+ */
+ if (old_type != PORT_UNKNOWN)
+ port->ops->release_port(port);
+
+ port->iobase = new_port;
+ port->type = new_serial.type;
+ port->hub6 = new_serial.hub6;
+ port->iotype = new_serial.io_type;
+ port->regshift = new_serial.iomem_reg_shift;
+ port->mapbase = (unsigned long)new_serial.iomem_base;
+
+ /*
+ * Claim and map the new regions
+ */
+ if (port->type != PORT_UNKNOWN)
+ retval = port->ops->request_port(port);
+
+ /*
+ * If we fail to request resources for the
+ * new port, try to restore the old settings.
+ */
+ if (retval && old_type != PORT_UNKNOWN) {
+ port->iobase = old_iobase;
+ port->type = old_type;
+ port->hub6 = old_hub6;
+ port->iotype = old_iotype;
+ port->regshift = old_shift;
+ port->mapbase = old_mapbase;
+ retval = port->ops->request_port(port);
+ /*
+ * If we failed to restore the old settings,
+ * we fail like this.
+ */
+ if (retval)
+ port->type = PORT_UNKNOWN;
+
+ /*
+ * We failed anyway.
+ */
+ retval = -EBUSY;
+ }
+ }
+
+ port->irq = new_serial.irq;
+ port->uartclk = new_serial.baud_base * 16;
+ port->flags = new_serial.flags & UPF_FLAGS;
+ state->custom_divisor = new_serial.custom_divisor;
+ state->close_delay = new_serial.close_delay * HZ / 100;
+ state->closing_wait = new_serial.closing_wait * HZ / 100;
+ port->fifosize = new_serial.xmit_fifo_size;
+ info->tty->low_latency = (port->flags & UPF_LOW_LATENCY) ? 1 : 0;
+
+ check_and_exit:
+ retval = 0;
+ if (port->type == PORT_UNKNOWN)
+ goto exit;
+ if (info->flags & UIF_INITIALIZED) {
+ if (((old_flags ^ port->flags) & UPF_SPD_MASK) ||
+ old_custom_divisor != state->custom_divisor) {
+ uart_update_altspeed(info);
+ uart_change_speed(info, NULL);
+ }
+ } else
+ retval = uart_startup(info, 1);
+ exit:
+ up(&port_sem);
+ return retval;
+}
+
+
+/*
+ * uart_get_lsr_info - get line status register info
+ */
+static int uart_get_lsr_info(struct uart_info *info, unsigned int *value)
+{
+ struct uart_port *port = info->port;
+ unsigned int result;
+
+ result = port->ops->tx_empty(port);
+
+ /*
+ * If we're about to load something into the transmit
+ * register, we'll pretend the transmitter isn't empty to
+ * avoid a race condition (depending on when the transmit
+ * interrupt happens).
+ */
+ if (info->port->x_char ||
+ ((uart_circ_chars_pending(&info->xmit) > 0) &&
+ !info->tty->stopped && !info->tty->hw_stopped))
+ result &= ~TIOCSER_TEMT;
+
+ return put_user(result, value);
+}
+
+static int uart_get_modem_info(struct uart_port *port, unsigned int *value)
+{
+ unsigned int result = port->mctrl;
+
+ result |= port->ops->get_mctrl(port);
+
+ return put_user(result, value);
+}
+
+static int
+uart_set_modem_info(struct uart_port *port, unsigned int cmd,
+ unsigned int *value)
+{
+ unsigned int arg, set, clear;
+ int ret = 0;
+
+ if (get_user(arg, value))
+ return -EFAULT;
+
+ set = clear = 0;
+ switch (cmd) {
+ case TIOCMBIS:
+ set = arg;
+ break;
+ case TIOCMBIC:
+ clear = arg;
+ break;
+ case TIOCMSET:
+ set = arg;
+ clear = ~arg;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ if (ret == 0)
+ uart_update_mctrl(port, set, clear);
+ return ret;
+}
+
+static void uart_break_ctl(struct tty_struct *tty, int break_state)
+{
+ struct uart_info *info = tty->driver_data;
+ struct uart_port *port = info->port;
+
+ BUG_ON(!kernel_locked());
+
+ if (port->type != PORT_UNKNOWN)
+ port->ops->break_ctl(port, break_state);
+}
+
+static int uart_do_autoconfig(struct uart_info *info)
+{
+ struct uart_port *port = info->port;
+ int flags, ret;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ /*
+ * Take the 'count' lock. This prevents count
+ * from incrementing, and hence any extra opens
+ * of the port while we're auto-configging.
+ */
+ if (down_interruptible(&port_sem))
+ return -ERESTARTSYS;
+
+ ret = -EBUSY;
+ if (info->state->count == 1 && info->blocked_open == 0) {
+ uart_shutdown(info);
+
+ /*
+ * If we already have a port type configured,
+ * we must release its resources.
+ */
+ if (port->type != PORT_UNKNOWN)
+ port->ops->release_port(port);
+
+ flags = UART_CONFIG_TYPE;
+ if (port->flags & UPF_AUTO_IRQ)
+ flags |= UART_CONFIG_IRQ;
+
+ /*
+ * This will claim the ports resources if
+ * a port is found.
+ */
+ port->ops->config_port(port, flags);
+
+ ret = uart_startup(info, 1);
+ }
+ up(&port_sem);
+ return ret;
+}
+
+static int
+uart_wait_modem_status(struct uart_info *info, unsigned long arg)
+{
+ struct uart_port *port = info->port;
+ DECLARE_WAITQUEUE(wait, current);
+ struct uart_icount cprev, cnow;
+ int ret;
+
+ /*
+ * note the counters on entry
+ */
+ spin_lock_irq(&port->lock);
+ memcpy(&cprev, &port->icount, sizeof(struct uart_icount));
+ spin_unlock_irq(&port->lock);
+
+ /*
+ * Force modem status interrupts on
+ */
+ port->ops->enable_ms(port);
+
+ add_wait_queue(&info->delta_msr_wait, &wait);
+ for (;;) {
+ spin_lock_irq(&port->lock);
+ memcpy(&cnow, &port->icount, sizeof(struct uart_icount));
+ spin_unlock_irq(&port->lock);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
+ ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
+ ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
+ ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
+ ret = 0;
+ break;
+ }
+
+ schedule();
+
+ /* see if a signal did it */
+ if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+
+ cprev = cnow;
+ }
+
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&info->delta_msr_wait, &wait);
+
+ return ret;
+}
+
+/*
+ * Called via sys_ioctl under the BKL. We can use spin_lock_irq() here.
+ */
+static int
+uart_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ struct uart_info *info = tty->driver_data;
+ struct serial_icounter_struct icount;
+ struct uart_icount cnow;
+ int ret = -ENOIOCTLCMD;
+
+ BUG_ON(!kernel_locked());
+
+ if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
+ (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
+ (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+ }
+
+ switch (cmd) {
+ case TIOCMGET:
+ ret = uart_get_modem_info(info->port,
+ (unsigned int *)arg);
+ break;
+
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ ret = uart_set_modem_info(info->port, cmd,
+ (unsigned int *)arg);
+ break;
+
+ case TIOCGSERIAL:
+ ret = uart_get_info(info, (struct serial_struct *)arg);
+ break;
+
+ case TIOCSSERIAL:
+ ret = uart_set_info(info, (struct serial_struct *)arg);
+ break;
+
+ case TIOCSERCONFIG:
+ ret = uart_do_autoconfig(info);
+ break;
+
+ case TIOCSERGETLSR: /* Get line status register */
+ ret = uart_get_lsr_info(info, (unsigned int *)arg);
+ break;
+
+ /*
+ * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
+ * - mask passed in arg for lines of interest
+ * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
+ * Caller should use TIOCGICOUNT to see which one it was
+ */
+ case TIOCMIWAIT:
+ ret = uart_wait_modem_status(info, arg);
+ break;
+
+ /*
+ * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
+ * Return: write counters to the user passed counter struct
+ * NB: both 1->0 and 0->1 transitions are counted except for
+ * RI where only 0->1 is counted.
+ */
+ case TIOCGICOUNT:
+ spin_lock_irq(&info->port->lock);
+ memcpy(&cnow, &info->port->icount,
+ sizeof(struct uart_icount));
+ spin_unlock_irq(&info->port->lock);
+
+ icount.cts = cnow.cts;
+ icount.dsr = cnow.dsr;
+ icount.rng = cnow.rng;
+ icount.dcd = cnow.dcd;
+ icount.rx = cnow.rx;
+ icount.tx = cnow.tx;
+ icount.frame = cnow.frame;
+ icount.overrun = cnow.overrun;
+ icount.parity = cnow.parity;
+ icount.brk = cnow.brk;
+ icount.buf_overrun = cnow.buf_overrun;
+
+ ret = copy_to_user((void *)arg, &icount, sizeof(icount))
+ ? -EFAULT : 0;
+ break;
+
+ case TIOCSERGWILD: /* obsolete */
+ case TIOCSERSWILD: /* obsolete */
+ ret = 0;
+ break;
+
+ default: {
+ struct uart_port *port = info->port;
+ if (port->ops->ioctl)
+ ret = port->ops->ioctl(port, cmd, arg);
+ break;
+ }
+ }
+ return ret;
+}
+
+static void uart_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+ struct uart_info *info = tty->driver_data;
+ unsigned long flags;
+ unsigned int cflag = tty->termios->c_cflag;
+
+ BUG_ON(!kernel_locked());
+
+ /*
+ * These are the bits that are used to setup various
+ * flags in the low level driver.
+ */
+#define RELEVANT_IFLAG(iflag) ((iflag) & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+
+ if ((cflag ^ old_termios->c_cflag) == 0 &&
+ RELEVANT_IFLAG(tty->termios->c_iflag ^ old_termios->c_iflag) == 0)
+ return;
+
+ uart_change_speed(info, old_termios);
+
+ /* Handle transition to B0 status */
+ if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD))
+ uart_clear_mctrl(info->port, TIOCM_RTS | TIOCM_DTR);
+
+ /* Handle transition away from B0 status */
+ if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
+ unsigned int mask = TIOCM_DTR;
+ if (!(cflag & CRTSCTS) ||
+ !test_bit(TTY_THROTTLED, &tty->flags))
+ mask |= TIOCM_RTS;
+ uart_set_mctrl(info->port, mask);
+ }
+
+ /* Handle turning off CRTSCTS */
+ if ((old_termios->c_cflag & CRTSCTS) && !(cflag & CRTSCTS)) {
+ spin_lock_irqsave(&info->port->lock, flags);
+ tty->hw_stopped = 0;
+ __uart_start(tty);
+ spin_unlock_irqrestore(&info->port->lock, flags);
+ }
+
+#if 0
+ /*
+ * No need to wake up processes in open wait, since they
+ * sample the CLOCAL flag once, and don't recheck it.
+ * XXX It's not clear whether the current behavior is correct
+ * or not. Hence, this may change.....
+ */
+ if (!(old_termios->c_cflag & CLOCAL) &&
+ (tty->termios->c_cflag & CLOCAL))
+ wake_up_interruptible(&info->open_wait);
+#endif
+}
+
+/*
+ * In 2.4.5, calls to this will be serialized via the BKL in
+ * linux/drivers/char/tty_io.c:tty_release()
+ * linux/drivers/char/tty_io.c:do_tty_handup()
+ */
+static void uart_close(struct tty_struct *tty, struct file *filp)
+{
+ struct uart_driver *drv = (struct uart_driver *)tty->driver.driver_state;
+ struct uart_info *info = tty->driver_data;
+ struct uart_port *port = info->port;
+ struct uart_state *state;
+ unsigned long flags;
+
+ BUG_ON(!kernel_locked());
+
+ if (!info)
+ return;
+
+ state = info->state;
+
+ DPRINTK("uart_close() called\n");
+
+ /*
+ * This is safe, as long as the BKL exists in
+ * do_tty_hangup(), and we're protected by the BKL.
+ */
+ if (tty_hung_up_p(filp))
+ goto done;
+
+ spin_lock_irqsave(&info->port->lock, flags);
+ if ((tty->count == 1) && (state->count != 1)) {
+ /*
+ * Uh, oh. tty->count is 1, which means that the tty
+ * structure will be freed. state->count should always
+ * be one in these conditions. If it's greater than
+ * one, we've got real problems, since it means the
+ * serial port won't be shutdown.
+ */
+ printk("uart_close: bad serial port count; tty->count is 1, "
+ "state->count is %d\n", state->count);
+ state->count = 1;
+ }
+ if (--state->count < 0) {
+ printk("rs_close: bad serial port count for %s%d: %d\n",
+ tty->driver.name, info->port->line, state->count);
+ state->count = 0;
+ }
+ if (state->count) {
+ spin_unlock_irqrestore(&info->port->lock, flags);
+ goto done;
+ }
+
+ /*
+ * The UIF_CLOSING flag protects us against further opens
+ * of this port.
+ */
+ info->flags |= UIF_CLOSING;
+ spin_unlock_irqrestore(&info->port->lock, flags);
+
+ /*
+ * Now we wait for the transmit buffer to clear; and we notify
+ * the line discipline to only process XON/XOFF characters.
+ */
+ tty->closing = 1;
+ if (info->state->closing_wait != USF_CLOSING_WAIT_NONE)
+ tty_wait_until_sent(tty, info->state->closing_wait);
+
+ /*
+ * At this point, we stop accepting input. To do this, we
+ * disable the receive line status interrupts.
+ */
+ if (info->flags & UIF_INITIALIZED) {
+ port->ops->stop_rx(port);
+ /*
+ * Before we drop DTR, make sure the UART transmitter
+ * has completely drained; this is especially
+ * important if there is a transmit FIFO!
+ */
+ uart_wait_until_sent(tty, port->timeout);
+ }
+ down(&port_sem);
+ uart_shutdown(info);
+ up(&port_sem);
+ uart_flush_buffer(tty);
+ if (tty->ldisc.flush_buffer)
+ tty->ldisc.flush_buffer(tty);
+ tty->closing = 0;
+ info->event = 0;
+ info->tty = NULL;
+ if (info->blocked_open) {
+ if (info->state->close_delay) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(info->state->close_delay);
+ set_current_state(TASK_RUNNING);
+ }
+ } else {
+#ifdef CONFIG_PM
+ /*
+ * Put device into D3 state.
+ */
+ pm_send(info->state->pm, PM_SUSPEND, (void *)3);
+#else
+ if (port->ops->pm)
+ port->ops->pm(port, 3, 0);
+#endif
+ }
+
+ /*
+ * Wake up anyone trying to open this port.
+ */
+ info->flags &= ~(UIF_NORMAL_ACTIVE|UIF_CLOSING);
+ wake_up_interruptible(&info->open_wait);
+
+ done:
+ if (drv->owner)
+ __MOD_DEC_USE_COUNT(drv->owner);
+}
+
+static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+ struct uart_info *info = tty->driver_data;
+ struct uart_port *port = info->port;
+ unsigned long char_time, expire;
+
+ BUG_ON(!kernel_locked());
+
+ if (port->type == PORT_UNKNOWN || port->fifosize == 0)
+ return;
+
+ /*
+ * Set the check interval to be 1/5 of the estimated time to
+ * send a single character, and make it at least 1. The check
+ * interval should also be less than the timeout.
+ *
+ * Note: we have to use pretty tight timings here to satisfy
+ * the NIST-PCTS.
+ */
+ char_time = (port->timeout - HZ/50) / port->fifosize;
+ char_time = char_time / 5;
+ if (char_time == 0)
+ char_time = 1;
+ if (timeout && timeout < char_time)
+ char_time = timeout;
+
+ /*
+ * If the transmitter hasn't cleared in twice the approximate
+ * amount of time to send the entire FIFO, it probably won't
+ * ever clear. This assumes the UART isn't doing flow
+ * control, which is currently the case. Hence, if it ever
+ * takes longer than port->timeout, this is probably due to a
+ * UART bug of some kind. So, we clamp the timeout parameter at
+ * 2*port->timeout.
+ */
+ if (timeout == 0 || timeout > 2 * port->timeout)
+ timeout = 2 * port->timeout;
+
+ expire = jiffies + timeout;
+
+ DPRINTK("uart_wait_until_sent(%d), jiffies=%lu, expire=%lu...\n",
+ port->line, jiffies, expire);
+
+ /*
+ * Check whether the transmitter is empty every 'char_time'.
+ * 'timeout' / 'expire' give us the maximum amount of time
+ * we wait.
+ */
+ while (!port->ops->tx_empty(port)) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(char_time);
+ if (signal_pending(current))
+ break;
+ if (time_after(jiffies, expire))
+ break;
+ }
+ set_current_state(TASK_RUNNING); /* might not be needed */
+}
+
+/*
+ * This is called with the BKL held in
+ * linux/drivers/char/tty_io.c:do_tty_hangup()
+ * We're called from the eventd thread, so we can sleep for
+ * a _short_ time only.
+ */
+static void uart_hangup(struct tty_struct *tty)
+{
+ struct uart_info *info = tty->driver_data;
+ struct uart_state *state = info->state;
+
+ BUG_ON(!kernel_locked());
+
+ uart_flush_buffer(tty);
+ down(&port_sem);
+ if (info->flags & UIF_CLOSING) {
+ up(&port_sem);
+ return;
+ }
+ uart_shutdown(info);
+ info->event = 0;
+ state->count = 0;
+ info->flags &= ~UIF_NORMAL_ACTIVE;
+ info->tty = NULL;
+ up(&port_sem);
+ wake_up_interruptible(&info->open_wait);
+}
+
+/*
+ * Copy across the serial console cflag setting into the termios settings
+ * for the initial open of the port. This allows continuity between the
+ * kernel settings, and the settings init adopts when it opens the port
+ * for the first time.
+ */
+static void uart_update_termios(struct uart_info *info)
+{
+ struct tty_struct *tty = info->tty;
+
+#ifdef CONFIG_SERIAL_CORE_CONSOLE
+ struct console *c = info->port->cons;
+
+ if (c && c->cflag && c->index == info->port->line) {
+ tty->termios->c_cflag = c->cflag;
+ c->cflag = 0;
+ }
+#endif
+
+ /*
+ * If the device failed to grab its irq resources,
+ * or some other error occurred, don't try to talk
+ * to the port hardware.
+ */
+ if (!(tty->flags & (1 << TTY_IO_ERROR))) {
+ /*
+ * Make termios settings take effect.
+ */
+ uart_change_speed(info, NULL);
+
+ /*
+ * And finally enable the RTS and DTR signals.
+ */
+ if (tty->termios->c_cflag & CBAUD)
+ uart_set_mctrl(info->port, TIOCM_DTR | TIOCM_RTS);
+ }
+}
+
+static int
+uart_block_til_ready(struct file *filp, struct uart_info *info)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ struct uart_state *state = info->state;
+ struct uart_port *port = info->port;
+
+ info->blocked_open++;
+ state->count--;
+
+ add_wait_queue(&info->open_wait, &wait);
+ while (1) {
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ /*
+ * If we have been hung up, tell userspace/restart open.
+ */
+ if (tty_hung_up_p(filp))
+ break;
+
+ /*
+ * If the device is in the middle of being closed, block
+ * until it's done. We will need to re-initialise the
+ * port. Hmm, is it legal to block a non-blocking open?
+ */
+ if (info->flags & UIF_CLOSING)
+ goto wait;
+
+ /*
+ * If the port has been closed, tell userspace/restart open.
+ */
+ if (!(info->flags & UIF_INITIALIZED))
+ break;
+
+ /*
+ * If non-blocking mode is set, or CLOCAL mode is set,
+ * we don't want to wait for the modem status lines to
+ * indicate that the port is ready.
+ *
+ * Also, if the port is not enabled/configured, we want
+ * to allow the open to succeed here. Note that we will
+ * have set TTY_IO_ERROR for a non-existant port.
+ */
+ if ((filp->f_flags & O_NONBLOCK) ||
+ (info->tty->termios->c_cflag & CLOCAL) ||
+ (info->tty->flags & (1 << TTY_IO_ERROR))) {
+ break;
+ }
+
+ /*
+ * Set DTR to allow modem to know we're waiting. Do
+ * not set RTS here - we want to make sure we catch
+ * the data from the modem.
+ */
+ if (info->tty->termios->c_cflag & CBAUD)
+ uart_set_mctrl(info->port, TIOCM_DTR);
+
+ /*
+ * and wait for the carrier to indicate that the
+ * modem is ready for us.
+ */
+ if (port->ops->get_mctrl(port) & TIOCM_CAR)
+ break;
+
+ wait:
+ schedule();
+
+ if (signal_pending(current))
+ break;
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&info->open_wait, &wait);
+
+ state->count++;
+ info->blocked_open--;
+
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+
+ if (tty_hung_up_p(filp) || !(info->flags & UIF_INITIALIZED))
+ return (port->flags & UPF_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS;
+
+ return 0;
+}
+
+static struct uart_info *uart_get(struct uart_driver *drv, int line)
+{
+ struct uart_state *state = drv->state + line;
+ struct uart_info *info = NULL;
+
+ down(&port_sem);
+ if (!state->port)
+ goto out;
+
+ state->count++;
+ info = state->info;
+
+ if (!info) {
+ info = kmalloc(sizeof(struct uart_info), GFP_KERNEL);
+ if (info) {
+ memset(info, 0, sizeof(struct uart_info));
+ init_waitqueue_head(&info->open_wait);
+ init_waitqueue_head(&info->delta_msr_wait);
+
+ /*
+ * Link the info into the other structures.
+ */
+ info->port = state->port;
+ info->state = state;
+ state->port->info = info;
+
+ tasklet_init(&info->tlet, uart_tasklet_action,
+ (unsigned long)info);
+ state->info = info;
+ } else
+ state->count--;
+ }
+
+ out:
+ up(&port_sem);
+ return info;
+}
+
+/*
+ * In 2.4.5, calls to uart_open are serialised by the BKL in
+ * linux/fs/devices.c:chrdev_open()
+ * Note that if this fails, then uart_close() _will_ be called.
+ *
+ * In time, we want to scrap the "opening nonpresent ports"
+ * behaviour and implement an alternative way for setserial
+ * to set base addresses/ports/types. This will allow us to
+ * get rid of a certain amount of extra tests.
+ */
+static int uart_open(struct tty_struct *tty, struct file *filp)
+{
+ struct uart_driver *drv = (struct uart_driver *)tty->driver.driver_state;
+ struct uart_info *info;
+ int retval, line = minor(tty->device) - tty->driver.minor_start;
+
+ BUG_ON(!kernel_locked());
+
+ DPRINTK("uart_open(%d) called\n", line);
+
+ /*
+ * tty->driver.num won't change, so we won't fail here with
+ * tty->driver_data set to something non-NULL (and therefore
+ * we won't get caught by uart_close()).
+ */
+ retval = -ENODEV;
+ if (line >= tty->driver.num)
+ goto fail;
+
+ /*
+ * If we fail to increment the module use count, we can't have
+ * any other users of this tty (since this implies that the module
+ * is about to be unloaded). Therefore, it is safe to set
+ * tty->driver_data to be NULL, so uart_close() doesn't bite us.
+ */
+ if (!try_inc_mod_count(drv->owner)) {
+ tty->driver_data = NULL;
+ goto fail;
+ }
+
+ /*
+ * FIXME: This one isn't fun. We can't guarantee that the tty isn't
+ * already in open, nor can we guarantee the state of tty->driver_data
+ */
+ info = uart_get(drv, line);
+ retval = -ENOMEM;
+ if (!info) {
+ if (tty->driver_data)
+ goto fail;
+ else
+ goto out;
+ }
+
+ /*
+ * Once we set tty->driver_data here, we are guaranteed that
+ * uart_close() will decrement the driver module use count.
+ * Any failures from here onwards should not touch the count.
+ */
+ tty->driver_data = info;
+ info->tty = tty;
+ info->tty->low_latency = (info->port->flags & UPF_LOW_LATENCY) ? 1 : 0;
+
+ /*
+ * If the port is in the middle of closing, bail out now.
+ */
+ if (tty_hung_up_p(filp) || (info->flags & UIF_CLOSING)) {
+ wait_event_interruptible(info->open_wait,
+ !(info->flags & UIF_CLOSING));
+ retval = (info->port->flags & UPF_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS;
+ goto fail;
+ }
+
+ /*
+ * Make sure the device is in D0 state.
+ */
+ if (info->state->count == 1) {
+#ifdef CONFIG_PM
+ pm_send(info->state->pm, PM_RESUME, (void *)0);
+#else
+ struct uart_port *port = info->port;
+ if (port->ops->pm)
+ port->ops->pm(port, 0, 3);
+#endif
+ }
+
+ /*
+ * Start up the serial port. We have this semaphore here to
+ * prevent uart_startup or uart_shutdown being re-entered if
+ * we sleep while requesting an IRQ.
+ */
+ down(&port_sem);
+ retval = uart_startup(info, 0);
+ up(&port_sem);
+ if (retval)
+ goto fail;
+
+ /*
+ * Wait until the port is ready.
+ */
+ retval = uart_block_til_ready(filp, info);
+
+ /*
+ * If this is the first open to succeed, adjust things to suit.
+ */
+ if (retval == 0 && !(info->flags & UIF_NORMAL_ACTIVE)) {
+ info->flags |= UIF_NORMAL_ACTIVE;
+
+ uart_update_termios(info);
+ }
+
+ return retval;
+
+ out:
+ if (drv->owner)
+ __MOD_DEC_USE_COUNT(drv->owner);
+ fail:
+ return retval;
+}
+
+#ifdef CONFIG_PROC_FS
+
+static const char *uart_type(struct uart_port *port)
+{
+ const char *str = NULL;
+
+ if (port->ops->type)
+ str = port->ops->type(port);
+
+ if (!str)
+ str = "unknown";
+
+ return str;
+}
+
+static int uart_line_info(char *buf, struct uart_driver *drv, int i)
+{
+ struct uart_state *state = drv->state + i;
+ struct uart_port *port = state->port;
+ char stat_buf[32];
+ unsigned int status;
+ int ret;
+
+ if (!port)
+ return 0;
+
+ ret = sprintf(buf, "%d: uart:%s port:%08X irq:%d",
+ port->line, uart_type(port),
+ port->iobase, port->irq);
+
+ if (port->type == PORT_UNKNOWN) {
+ strcat(buf, "\n");
+ return ret + 1;
+ }
+
+ status = port->ops->get_mctrl(port);
+
+ ret += sprintf(buf + ret, " tx:%d rx:%d",
+ port->icount.tx, port->icount.rx);
+ if (port->icount.frame)
+ ret += sprintf(buf + ret, " fe:%d",
+ port->icount.frame);
+ if (port->icount.parity)
+ ret += sprintf(buf + ret, " pe:%d",
+ port->icount.parity);
+ if (port->icount.brk)
+ ret += sprintf(buf + ret, " brk:%d",
+ port->icount.brk);
+ if (port->icount.overrun)
+ ret += sprintf(buf + ret, " oe:%d",
+ port->icount.overrun);
+
+#define INFOBIT(bit,str) \
+ if (port->mctrl & (bit)) \
+ strncat(stat_buf, (str), sizeof(stat_buf) - \
+ strlen(stat_buf) - 2)
+#define STATBIT(bit,str) \
+ if (status & (bit)) \
+ strncat(stat_buf, (str), sizeof(stat_buf) - \
+ strlen(stat_buf) - 2)
+
+ stat_buf[0] = '\0';
+ stat_buf[1] = '\0';
+ INFOBIT(TIOCM_RTS, "|RTS");
+ STATBIT(TIOCM_CTS, "|CTS");
+ INFOBIT(TIOCM_DTR, "|DTR");
+ STATBIT(TIOCM_DSR, "|DSR");
+ STATBIT(TIOCM_CAR, "|CD");
+ STATBIT(TIOCM_RNG, "|RI");
+ if (stat_buf[0])
+ stat_buf[0] = ' ';
+ strcat(stat_buf, "\n");
+
+ ret += sprintf(buf + ret, stat_buf);
+ return ret;
+}
+
+static int uart_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct tty_driver *ttydrv = data;
+ struct uart_driver *drv = ttydrv->driver_state;
+ int i, len = 0, l;
+ off_t begin = 0;
+
+ len += sprintf(page, "serinfo:1.0 driver%s%s revision:%s\n",
+ "", "", "");
+ for (i = 0; i < drv->nr && len < PAGE_SIZE - 96; i++) {
+ l = uart_line_info(page + len, drv, i);
+ len += l;
+ if (len + begin > off + count)
+ goto done;
+ if (len + begin < off) {
+ begin += len;
+ len = 0;
+ }
+ }
+ *eof = 1;
+ done:
+ if (off >= len + begin)
+ return 0;
+ *start = page + (off - begin);
+ return (count < begin + len - off) ? count : (begin + len - off);
+}
+#endif
+
+#ifdef CONFIG_SERIAL_CORE_CONSOLE
+/*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+struct uart_port * __init
+uart_get_console(struct uart_port *ports, int nr, struct console *co)
+{
+ int idx = co->index;
+
+ if (idx < 0 || idx >= nr || (ports[idx].iobase == 0 &&
+ ports[idx].membase == NULL))
+ for (idx = 0; idx < nr; idx++)
+ if (ports[idx].iobase != 0 ||
+ ports[idx].membase != NULL)
+ break;
+
+ co->index = idx;
+
+ return ports + idx;
+}
+
+/**
+ * uart_parse_options - Parse serial port baud/parity/bits/flow contro.
+ * @options: pointer to option string
+ * @baud: pointer to an 'int' variable for the baud rate.
+ * @parity: pointer to an 'int' variable for the parity.
+ * @bits: pointer to an 'int' variable for the number of data bits.
+ * @flow: pointer to an 'int' variable for the flow control character.
+ *
+ * uart_parse_options decodes a string containing the serial console
+ * options. The format of the string is <baud><parity><bits><flow>,
+ * eg: 115200n8r
+ */
+void __init
+uart_parse_options(char *options, int *baud, int *parity, int *bits, int *flow)
+{
+ char *s = options;
+
+ *baud = simple_strtoul(s, NULL, 10);
+ while (*s >= '0' && *s <= '9')
+ s++;
+ if (*s)
+ *parity = *s++;
+ if (*s)
+ *bits = *s++ - '0';
+ if (*s)
+ *flow = *s;
+}
+
+struct baud_rates {
+ unsigned int rate;
+ unsigned int cflag;
+};
+
+static struct baud_rates baud_rates[] = {
+ { 921600, B921600 },
+ { 460800, B460800 },
+ { 230400, B230400 },
+ { 115200, B115200 },
+ { 57600, B57600 },
+ { 38400, B38400 },
+ { 19200, B19200 },
+ { 9600, B9600 },
+ { 4800, B4800 },
+ { 2400, B2400 },
+ { 1200, B1200 },
+ { 0, B38400 }
+};
+
+/**
+ * uart_set_options - setup the serial console parameters
+ * @port: pointer to the serial ports uart_port structure
+ * @co: console pointer
+ * @baud: baud rate
+ * @parity: parity character - 'n' (none), 'o' (odd), 'e' (even)
+ * @bits: number of data bits
+ * @flow: flow control character - 'r' (rts)
+ */
+int __init
+uart_set_options(struct uart_port *port, struct console *co,
+ int baud, int parity, int bits, int flow)
+{
+ unsigned int cflag = CREAD | HUPCL | CLOCAL;
+ unsigned int quot;
+ int i;
+
+ /*
+ * Construct a cflag setting.
+ */
+ for (i = 0; baud_rates[i].rate; i++)
+ if (baud_rates[i].rate <= baud)
+ break;
+
+ cflag |= baud_rates[i].cflag;
+
+ if (bits == 7)
+ cflag |= CS7;
+ else
+ cflag |= CS8;
+
+ switch (parity) {
+ case 'o': case 'O':
+ cflag |= PARODD;
+ /*fall through*/
+ case 'e': case 'E':
+ cflag |= PARENB;
+ break;
+ }
+
+ if (flow == 'r')
+ cflag |= CRTSCTS;
+
+ co->cflag = cflag;
+ quot = (port->uartclk / (16 * baud));
+ port->ops->change_speed(port, cflag, 0, quot);
+
+ return 0;
+}
+
+extern void ambauart_console_init(void);
+extern void anakin_console_init(void);
+extern void clps711xuart_console_init(void);
+extern void rs285_console_init(void);
+extern void sa1100_rs_console_init(void);
+extern void serial8250_console_init(void);
+extern void uart00_console_init(void);
+
+/*
+ * Central "initialise all serial consoles" container. Needs to be killed.
+ */
+void __init uart_console_init(void)
+{
+#ifdef CONFIG_SERIAL_AMBA_CONSOLE
+ ambauart_console_init();
+#endif
+#ifdef CONFIG_SERIAL_ANAKIN_CONSOLE
+ anakin_console_init();
+#endif
+#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
+ clps711xuart_console_init();
+#endif
+#ifdef CONFIG_SERIAL_21285_CONSOLE
+ rs285_console_init();
+#endif
+#ifdef CONFIG_SERIAL_SA1100_CONSOLE
+ sa1100_rs_console_init();
+#endif
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+ serial8250_console_init();
+#endif
+#ifdef CONFIG_SERIAL_UART00_CONSOLE
+ uart00_console_init();
+#endif
+}
+#endif /* CONFIG_SERIAL_CORE_CONSOLE */
+
+#ifdef CONFIG_PM
+/*
+ * Serial port power management.
+ *
+ * This is pretty coarse at the moment - either all on or all off. We
+ * should probably some day do finer power management here some day.
+ *
+ * We don't actually save any state; the serial driver already has the
+ * state held internally to re-setup the port when we come out of D3.
+ */
+static int uart_pm_set_state(struct uart_state *state, int pm_state, int oldstate)
+{
+ struct uart_port *port;
+ struct uart_ops *ops;
+ int running = state->info &&
+ state->info->flags & UIF_INITIALIZED;
+
+ down(&port_sem);
+
+ if (!state->port || state->port->type == PORT_UNKNOWN) {
+ up(&port_sem);
+ return 0;
+ }
+
+ port = state->port;
+ ops = port->ops;
+
+ DPRINTK("pm: %08x: %d -> %d, %srunning\n",
+ port->iobase, dev->state, pm_state, running ? "" : "not ");
+
+ if (pm_state == 0) {
+ if (ops->pm)
+ ops->pm(port, pm_state, oldstate);
+ if (running) {
+ /*
+ * The port lock isn't taken here -
+ * the port isn't initialised.
+ */
+ ops->set_mctrl(port, 0);
+ ops->startup(port);
+ uart_change_speed(state->info, NULL);
+ spin_lock_irq(&port->lock);
+ ops->set_mctrl(port, port->mctrl);
+ ops->start_tx(port, 0);
+ spin_unlock_irq(&port->lock);
+ }
+
+ /*
+ * Re-enable the console device after suspending.
+ */
+ if (port->cons && port->cons->index == port->line)
+ port->cons->flags |= CON_ENABLED;
+ } else if (pm_state == 1) {
+ if (ops->pm)
+ ops->pm(port, pm_state, oldstate);
+ } else {
+ /*
+ * Disable the console device before suspending.
+ */
+ if (port->cons && port->cons->index == port->line)
+ port->cons->flags &= ~CON_ENABLED;
+
+ if (running) {
+ ops->stop_tx(port, 0);
+ spin_lock_irq(&port->lock);
+ ops->set_mctrl(port, 0);
+ spin_unlock_irq(&port->lock);
+ ops->stop_rx(port);
+ ops->shutdown(port);
+ }
+ if (ops->pm)
+ ops->pm(port, pm_state, oldstate);
+ }
+ up(&port_sem);
+
+ return 0;
+}
+
+/*
+ * Wakeup support.
+ */
+static int uart_pm_set_wakeup(struct uart_state *state, int data)
+{
+ int err = 0;
+
+ if (state->port->ops->set_wake)
+ err = state->port->ops->set_wake(state->port, data);
+
+ return err;
+}
+
+static int uart_pm(struct pm_dev *dev, pm_request_t rqst, void *data)
+{
+ struct uart_state *state = dev->data;
+ int err = 0;
+
+ switch (rqst) {
+ case PM_SUSPEND:
+ case PM_RESUME:
+ err = uart_pm_set_state(state, (int)data, dev->state);
+ break;
+
+ case PM_SET_WAKEUP:
+ err = uart_pm_set_wakeup(state, (int)data);
+ break;
+ }
+ return err;
+}
+#endif
+
+static inline void
+uart_report_port(struct uart_driver *drv, struct uart_port *port)
+{
+ printk("%s%d at ", drv->dev_name, port->line);
+ switch (port->iotype) {
+ case UPIO_PORT:
+ printk("I/O 0x%x", port->iobase);
+ break;
+ case UPIO_HUB6:
+ printk("I/O 0x%x offset 0x%x", port->iobase, port->hub6);
+ break;
+ case UPIO_MEM:
+ printk("MMIO 0x%lx", port->mapbase);
+ break;
+ }
+ printk(" (irq = %d) is a %s\n", port->irq, uart_type(port));
+}
+
+static void
+__uart_register_port(struct uart_driver *drv, struct uart_state *state,
+ struct uart_port *port)
+{
+ unsigned int flags;
+
+ state->port = port;
+
+ spin_lock_init(&port->lock);
+ port->type = PORT_UNKNOWN;
+ port->cons = drv->cons;
+ port->info = state->info;
+
+ /*
+ * If there isn't a port here, don't do anything further.
+ */
+ if (!port->iobase && !port->mapbase)
+ return;
+
+ /*
+ * Now do the auto configuration stuff. Note that config_port
+ * is expected to claim the resources and map the port for us.
+ */
+ flags = UART_CONFIG_TYPE;
+ if (port->flags & UPF_AUTO_IRQ)
+ flags |= UART_CONFIG_IRQ;
+ if (port->flags & UPF_BOOT_AUTOCONF)
+ port->ops->config_port(port, flags);
+
+ /*
+ * Register the port whether it's detected or not. This allows
+ * setserial to be used to alter this ports parameters.
+ */
+ tty_register_devfs(drv->tty_driver, 0, drv->minor + port->line);
+
+ if (port->type != PORT_UNKNOWN) {
+ unsigned long flags;
+
+ uart_report_port(drv, port);
+
+ /*
+ * Ensure that the modem control lines are de-activated.
+ * We probably don't need a spinlock around this, but
+ */
+ spin_lock_irqsave(&port->lock, flags);
+ port->ops->set_mctrl(port, 0);
+ spin_unlock_irqrestore(&port->lock, flags);
+
+#ifdef CONFIG_PM
+ /*
+ * Power down all ports by default, except the
+ * console if we have one. We need to drop the
+ * port semaphore here.
+ */
+ if (state->pm && (!drv->cons || port->line != drv->cons->index)) {
+ up(&port_sem);
+ pm_send(state->pm, PM_SUSPEND, (void *)3);
+ down(&port_sem);
+ }
+#endif
+ }
+}
+
+/*
+ * Hangup the port. This must be done outside the port_sem
+ * since uart_hangup() grabs this same semaphore. Grr.
+ */
+static void
+__uart_hangup_port(struct uart_driver *drv, struct uart_state *state)
+{
+ struct uart_info *info = state->info;
+
+ if (info && info->tty)
+ tty_vhangup(info->tty);
+}
+
+/*
+ * This reverses the affects of __uart_register_port.
+ */
+static void
+__uart_unregister_port(struct uart_driver *drv, struct uart_state *state)
+{
+ struct uart_port *port = state->port;
+ struct uart_info *info = state->info;
+
+ state->info = NULL;
+
+ /*
+ * Remove the devices from devfs
+ */
+ tty_unregister_devfs(drv->tty_driver, drv->minor + port->line);
+
+ /*
+ * Free the port IO and memory resources, if any.
+ */
+ if (port->type != PORT_UNKNOWN)
+ port->ops->release_port(port);
+
+ /*
+ * Indicate that there isn't a port here anymore.
+ */
+ port->type = PORT_UNKNOWN;
+
+ /*
+ * Kill the tasklet, and free resources.
+ */
+ if (info) {
+ tasklet_kill(&info->tlet);
+ kfree(info);
+ }
+}
+
+/**
+ * uart_register_driver - register a driver with the uart core layer
+ * @drv: low level driver structure
+ *
+ * Register a uart driver with the core driver. We in turn register
+ * with the tty layer, and initialise the core driver per-port state.
+ *
+ * We have a proc file in /proc/tty/driver which is named after the
+ * normal driver.
+ *
+ * drv->port should be NULL, and the per-port structures should be
+ * registered using uart_add_one_port after this call has succeeded.
+ */
+int uart_register_driver(struct uart_driver *drv)
+{
+ struct tty_driver *normal = NULL;
+ struct termios **termios = NULL;
+ int i, retval;
+
+ BUG_ON(drv->state);
+
+ /*
+ * Maybe we should be using a slab cache for this, especially if
+ * we have a large number of ports to handle. Note that we also
+ * allocate space for an integer for reference counting.
+ */
+ drv->state = kmalloc(sizeof(struct uart_state) * drv->nr +
+ sizeof(int), GFP_KERNEL);
+ retval = -ENOMEM;
+ if (!drv->state)
+ goto out;
+
+ memset(drv->state, 0, sizeof(struct uart_state) * drv->nr +
+ sizeof(int));
+
+ termios = kmalloc(sizeof(struct termios *) * drv->nr * 2 +
+ sizeof(struct tty_struct *) * drv->nr, GFP_KERNEL);
+ if (!termios)
+ goto out;
+
+ memset(termios, 0, sizeof(struct termios *) * drv->nr * 2 +
+ sizeof(struct tty_struct *) * drv->nr);
+
+ normal = kmalloc(sizeof(struct tty_driver), GFP_KERNEL);
+ if (!normal)
+ goto out;
+
+ memset(normal, 0, sizeof(struct tty_driver));
+
+ drv->tty_driver = normal;
+
+ normal->magic = TTY_DRIVER_MAGIC;
+ normal->driver_name = drv->driver_name;
+ normal->name = drv->dev_name;
+ normal->major = drv->major;
+ normal->minor_start = drv->minor;
+ normal->num = drv->nr;
+ normal->type = TTY_DRIVER_TYPE_SERIAL;
+ normal->subtype = SERIAL_TYPE_NORMAL;
+ normal->init_termios = tty_std_termios;
+ normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ normal->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+ normal->refcount = (int *)(drv->state + drv->nr);
+ normal->termios = termios;
+ normal->termios_locked = termios + drv->nr;
+ normal->table = (struct tty_struct **)(termios + drv->nr * 2);
+ normal->driver_state = drv;
+
+ normal->open = uart_open;
+ normal->close = uart_close;
+ normal->write = uart_write;
+ normal->put_char = uart_put_char;
+ normal->flush_chars = uart_flush_chars;
+ normal->write_room = uart_write_room;
+ normal->chars_in_buffer = uart_chars_in_buffer;
+ normal->flush_buffer = uart_flush_buffer;
+ normal->ioctl = uart_ioctl;
+ normal->throttle = uart_throttle;
+ normal->unthrottle = uart_unthrottle;
+ normal->send_xchar = uart_send_xchar;
+ normal->set_termios = uart_set_termios;
+ normal->stop = uart_stop;
+ normal->start = uart_start;
+ normal->hangup = uart_hangup;
+ normal->break_ctl = uart_break_ctl;
+ normal->wait_until_sent = uart_wait_until_sent;
+#ifdef CONFIG_PROC_FS
+ normal->read_proc = uart_read_proc;
+#endif
+
+ /*
+ * Initialise the UART state(s).
+ */
+ for (i = 0; i < drv->nr; i++) {
+ struct uart_state *state = drv->state + i;
+
+ state->close_delay = 5 * HZ / 10;
+ state->closing_wait = 30 * HZ;
+#ifdef CONFIG_PM
+ state->pm = pm_register(PM_SYS_DEV, PM_SYS_COM, uart_pm);
+ if (state->pm)
+ state->pm->data = state;
+#endif
+ }
+
+ retval = tty_register_driver(normal);
+ out:
+ if (retval < 0) {
+#ifdef CONFIG_PM
+ for (i = 0; i < drv->nr; i++)
+ pm_unregister(drv->state[i].pm);
+#endif
+ kfree(normal);
+ kfree(drv->state);
+ kfree(termios);
+ }
+ return retval;
+}
+
+/**
+ * uart_unregister_driver - remove a driver from the uart core layer
+ * @drv: low level driver structure
+ *
+ * Remove all references to a driver from the core driver. The low
+ * level driver must have removed all its ports via the
+ * uart_remove_one_port() if it registered them with uart_add_one_port().
+ * (ie, drv->port == NULL)
+ */
+void uart_unregister_driver(struct uart_driver *drv)
+{
+ int i;
+
+ for (i = 0; i < drv->nr; i++)
+ pm_unregister(drv->state[i].pm);
+
+ tty_unregister_driver(drv->tty_driver);
+
+ kfree(drv->state);
+ kfree(drv->tty_driver->termios);
+ kfree(drv->tty_driver);
+}
+
+/**
+ * uart_add_one_port - attach a driver-defined port structure
+ * @drv: pointer to the uart low level driver structure for this port
+ * @port: uart port structure to use for this port.
+ *
+ * This allows the driver to register its own uart_port structure
+ * with the core driver. The main purpose is to allow the low
+ * level uart drivers to expand uart_port, rather than having yet
+ * more levels of structures.
+ */
+int uart_add_one_port(struct uart_driver *drv, struct uart_port *port)
+{
+ struct uart_state *state;
+
+ BUG_ON(in_interrupt());
+
+ if (port->line >= drv->nr)
+ return -EINVAL;
+
+ state = drv->state + port->line;
+
+ down(&port_sem);
+ __uart_register_port(drv, state, port);
+ up(&port_sem);
+
+ return 0;
+}
+
+/**
+ * uart_remove_one_port - detach a driver defined port structure
+ * @drv: pointer to the uart low level driver structure for this port
+ * @port: uart port structure for this port
+ *
+ * This unhooks (and hangs up) the specified port structure from the
+ * core driver. No further calls will be made to the low-level code
+ * for this port.
+ */
+int uart_remove_one_port(struct uart_driver *drv, struct uart_port *port)
+{
+ struct uart_state *state = drv->state + port->line;
+
+ BUG_ON(in_interrupt());
+
+ if (state->port != port)
+ printk(KERN_ALERT "Removing wrong port: %p != %p\n",
+ state->port, port);
+
+ __uart_hangup_port(drv, state);
+
+ down(&port_sem);
+ __uart_unregister_port(drv, state);
+ state->port = NULL;
+ up(&port_sem);
+
+ return 0;
+}
+
+/*
+ * Are the two ports equivalent?
+ */
+static int uart_match_port(struct uart_port *port1, struct uart_port *port2)
+{
+ if (port1->iotype != port2->iotype)
+ return 0;
+
+ switch (port1->iotype) {
+ case UPIO_PORT:
+ return (port1->iobase == port2->iobase);
+ case UPIO_HUB6:
+ return (port1->iobase == port2->iobase) &&
+ (port1->hub6 == port2->hub6);
+ case UPIO_MEM:
+ return (port1->membase == port2->membase);
+ }
+ return 0;
+}
+
+/*
+ * Try to find an unused uart_state slot for a port.
+ */
+static struct uart_state *
+uart_find_match_or_unused(struct uart_driver *drv, struct uart_port *port)
+{
+ int i;
+
+ /*
+ * First, find a port entry which matches. Note: if we do
+ * find a matching entry, and it has a non-zero use count,
+ * then we can't register the port.
+ */
+ for (i = 0; i < drv->nr; i++)
+ if (uart_match_port(drv->state[i].port, port))
+ return &drv->state[i];
+
+ /*
+ * We didn't find a matching entry, so look for the first
+ * free entry. We look for one which hasn't been previously
+ * used (indicated by zero iobase).
+ */
+ for (i = 0; i < drv->nr; i++)
+ if (drv->state[i].port->type == PORT_UNKNOWN &&
+ drv->state[i].port->iobase == 0 &&
+ drv->state[i].count == 0)
+ return &drv->state[i];
+
+ /*
+ * That also failed. Last resort is to find any currently
+ * entry which doesn't have a real port associated with it.
+ */
+ for (i = 0; i < drv->nr; i++)
+ if (drv->state[i].port->type == PORT_UNKNOWN &&
+ drv->state[i].count == 0)
+ return &drv->state[i];
+
+ return NULL;
+}
+
+/**
+ * uart_register_port: register uart settings with a port
+ * @drv: pointer to the uart low level driver structure for this port
+ * @port: uart port structure describing the port
+ *
+ * Register UART settings with the specified low level driver. Detect
+ * the type of the port if UPF_BOOT_AUTOCONF is set, and detect the
+ * IRQ if UPF_AUTO_IRQ is set.
+ *
+ * We try to pick the same port for the same IO base address, so that
+ * when a modem is plugged in, unplugged and plugged back in, it gets
+ * allocated the same port.
+ *
+ * Returns negative error, or positive line number.
+ */
+int uart_register_port(struct uart_driver *drv, struct uart_port *port)
+{
+ struct uart_state *state;
+ int ret;
+
+ down(&port_sem);
+
+ state = uart_find_match_or_unused(drv, port);
+
+ if (state) {
+ /*
+ * Ok, we've found a line that we can use.
+ *
+ * If we find a port that matches this one, and it appears
+ * to be in-use (even if it doesn't have a type) we shouldn't
+ * alter it underneath itself - the port may be open and
+ * trying to do useful work.
+ */
+ if (state->count != 0 ||
+ (state->info && state->info->blocked_open != 0)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ state->port->iobase = port->iobase;
+ state->port->membase = port->membase;
+ state->port->irq = port->irq;
+ state->port->uartclk = port->uartclk;
+ state->port->fifosize = port->fifosize;
+ state->port->regshift = port->regshift;
+ state->port->iotype = port->iotype;
+ state->port->flags = port->flags;
+ state->port->line = drv->state - state;
+
+ __uart_register_port(drv, state, state->port);
+
+ ret = state->port->line;
+ } else
+ ret = -ENOSPC;
+ out:
+ up(&port_sem);
+ return ret;
+}
+
+/**
+ * uart_unregister_port - de-allocate a port
+ * @drv: pointer to the uart low level driver structure for this port
+ * @line: line index previously returned from uart_register_port()
+ *
+ * Hang up the specified line associated with the low level driver,
+ * and mark the port as unused.
+ */
+void uart_unregister_port(struct uart_driver *drv, int line)
+{
+ struct uart_state *state;
+
+ if (line < 0 || line >= drv->nr) {
+ printk(KERN_ERR "Attempt to unregister %s%d\n",
+ drv->dev_name, line);
+ return;
+ }
+
+ state = drv->state + line;
+
+ __uart_hangup_port(drv, state);
+
+ down(&port_sem);
+ __uart_unregister_port(drv, state);
+ up(&port_sem);
+}
+
+EXPORT_SYMBOL(uart_event);
+EXPORT_SYMBOL(uart_register_driver);
+EXPORT_SYMBOL(uart_unregister_driver);
+EXPORT_SYMBOL(uart_register_port);
+EXPORT_SYMBOL(uart_unregister_port);
+
+MODULE_DESCRIPTION("Serial driver core");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * linux/drivers/char/serial_sa1100.c
+ *
+ * Driver for SA11x0 serial ports
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * $Id: serial_sa1100.c,v 1.41 2002/07/21 08:57:55 rmk Exp $
+ *
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/circ_buf.h>
+#include <linux/serial.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <asm/hardware.h>
+#include <asm/mach/serial_sa1100.h>
+
+#if defined(CONFIG_SERIAL_SA1100_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/serial_core.h>
+
+/* We've been assigned a range on the "Low-density serial ports" major */
+#define SERIAL_SA1100_MAJOR 204
+#define MINOR_START 5
+
+#define NR_PORTS 3
+
+#define SA1100_ISR_PASS_LIMIT 256
+
+/*
+ * Convert from ignore_status_mask or read_status_mask to UTSR[01]
+ */
+#define SM_TO_UTSR0(x) ((x) & 0xff)
+#define SM_TO_UTSR1(x) ((x) >> 8)
+#define UTSR0_TO_SM(x) ((x))
+#define UTSR1_TO_SM(x) ((x) << 8)
+
+#define UART_GET_UTCR0(sport) __raw_readl((sport)->port.membase + UTCR0)
+#define UART_GET_UTCR1(sport) __raw_readl((sport)->port.membase + UTCR1)
+#define UART_GET_UTCR2(sport) __raw_readl((sport)->port.membase + UTCR2)
+#define UART_GET_UTCR3(sport) __raw_readl((sport)->port.membase + UTCR3)
+#define UART_GET_UTSR0(sport) __raw_readl((sport)->port.membase + UTSR0)
+#define UART_GET_UTSR1(sport) __raw_readl((sport)->port.membase + UTSR1)
+#define UART_GET_CHAR(sport) __raw_readl((sport)->port.membase + UTDR)
+
+#define UART_PUT_UTCR0(sport,v) __raw_writel((v),(sport)->port.membase + UTCR0)
+#define UART_PUT_UTCR1(sport,v) __raw_writel((v),(sport)->port.membase + UTCR1)
+#define UART_PUT_UTCR2(sport,v) __raw_writel((v),(sport)->port.membase + UTCR2)
+#define UART_PUT_UTCR3(sport,v) __raw_writel((v),(sport)->port.membase + UTCR3)
+#define UART_PUT_UTSR0(sport,v) __raw_writel((v),(sport)->port.membase + UTSR0)
+#define UART_PUT_UTSR1(sport,v) __raw_writel((v),(sport)->port.membase + UTSR1)
+#define UART_PUT_CHAR(sport,v) __raw_writel((v),(sport)->port.membase + UTDR)
+
+/*
+ * This is the size of our serial port register set.
+ */
+#define UART_PORT_SIZE 0x24
+
+/*
+ * This determines how often we check the modem status signals
+ * for any change. They generally aren't connected to an IRQ
+ * so we have to poll them. We also check immediately before
+ * filling the TX fifo incase CTS has been dropped.
+ */
+#define MCTRL_TIMEOUT (250*HZ/1000)
+
+struct sa1100_port {
+ struct uart_port port;
+ struct timer_list timer;
+ unsigned int old_status;
+};
+
+/*
+ * Handle any change of modem status signal since we were last called.
+ */
+static void sa1100_mctrl_check(struct sa1100_port *sport)
+{
+ unsigned int status, changed;
+
+ status = sport->port.ops->get_mctrl(&sport->port);
+ changed = status ^ sport->old_status;
+
+ if (changed == 0)
+ return;
+
+ sport->old_status = status;
+
+ if (changed & TIOCM_RI)
+ sport->port.icount.rng++;
+ if (changed & TIOCM_DSR)
+ sport->port.icount.dsr++;
+ if (changed & TIOCM_CAR)
+ uart_handle_dcd_change(&sport->port, status & TIOCM_CAR);
+ if (changed & TIOCM_CTS)
+ uart_handle_cts_change(&sport->port, status & TIOCM_CTS);
+
+ wake_up_interruptible(&sport->port.info->delta_msr_wait);
+}
+
+/*
+ * This is our per-port timeout handler, for checking the
+ * modem status signals.
+ */
+static void sa1100_timeout(unsigned long data)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)data;
+ unsigned long flags;
+
+ if (sport->port.info) {
+ spin_lock_irqsave(&sport->port.lock, flags);
+ sa1100_mctrl_check(sport);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
+
+ mod_timer(&sport->timer, jiffies + MCTRL_TIMEOUT);
+ }
+}
+
+static void __sa1100_stop_tx(struct sa1100_port *sport)
+{
+ u32 utcr3;
+
+ utcr3 = UART_GET_UTCR3(sport);
+ UART_PUT_UTCR3(sport, utcr3 & ~UTCR3_TIE);
+ sport->port.read_status_mask &= ~UTSR0_TO_SM(UTSR0_TFS);
+}
+
+/*
+ * interrupts disabled on entry
+ */
+static void sa1100_stop_tx(struct uart_port *port, unsigned int tty_stop)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sport->port.lock, flags);
+ __sa1100_stop_tx(sport);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
+}
+
+/*
+ * interrupts may not be disabled on entry
+ */
+static void sa1100_start_tx(struct uart_port *port, unsigned int tty_start)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+ unsigned long flags;
+ u32 utcr3;
+
+ spin_lock_irqsave(&sport->port.lock, flags);
+ utcr3 = UART_GET_UTCR3(sport);
+ sport->port.read_status_mask |= UTSR0_TO_SM(UTSR0_TFS);
+ UART_PUT_UTCR3(sport, utcr3 | UTCR3_TIE);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
+}
+
+/*
+ * Interrupts enabled
+ */
+static void sa1100_stop_rx(struct uart_port *port)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+ unsigned long flags;
+ u32 utcr3;
+
+ spin_lock_irqsave(&sport->port.lock, flags);
+ utcr3 = UART_GET_UTCR3(sport);
+ UART_PUT_UTCR3(sport, utcr3 & ~UTCR3_RIE);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
+}
+
+/*
+ * Set the modem control timer to fire immediately.
+ */
+static void sa1100_enable_ms(struct uart_port *port)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+
+ mod_timer(&sport->timer, jiffies);
+}
+
+static void
+sa1100_rx_chars(struct sa1100_port *sport, struct pt_regs *regs)
+{
+ struct tty_struct *tty = sport->port.info->tty;
+ unsigned int status, ch, flg, ignored = 0;
+
+ status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
+ UTSR0_TO_SM(UART_GET_UTSR0(sport));
+ while (status & UTSR1_TO_SM(UTSR1_RNE)) {
+ ch = UART_GET_CHAR(sport);
+
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+ sport->port.icount.rx++;
+
+ flg = TTY_NORMAL;
+
+ /*
+ * note that the error handling code is
+ * out of the main execution path
+ */
+ if (status & UTSR1_TO_SM(UTSR1_PRE | UTSR1_FRE | UTSR1_ROR))
+ goto handle_error;
+
+ if (uart_handle_sysrq_char(&sport->port, ch, regs))
+ goto ignore_char;
+
+ error_return:
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ ignore_char:
+ status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
+ UTSR0_TO_SM(UART_GET_UTSR0(sport));
+ }
+ out:
+ tty_flip_buffer_push(tty);
+ return;
+
+ handle_error:
+ if (status & UTSR1_TO_SM(UTSR1_PRE))
+ sport->port.icount.parity++;
+ else if (status & UTSR1_TO_SM(UTSR1_FRE))
+ sport->port.icount.frame++;
+ if (status & UTSR1_TO_SM(UTSR1_ROR))
+ sport->port.icount.overrun++;
+
+ if (status & sport->port.ignore_status_mask) {
+ if (++ignored > 100)
+ goto out;
+ goto ignore_char;
+ }
+
+ status &= sport->port.read_status_mask;
+
+ if (status & UTSR1_TO_SM(UTSR1_PRE))
+ flg = TTY_PARITY;
+ else if (status & UTSR1_TO_SM(UTSR1_FRE))
+ flg = TTY_FRAME;
+
+ if (status & UTSR1_TO_SM(UTSR1_ROR)) {
+ /*
+ * overrun does *not* affect the character
+ * we read from the FIFO
+ */
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+ ch = 0;
+ flg = TTY_OVERRUN;
+ }
+#ifdef SUPPORT_SYSRQ
+ sport->port.sysrq = 0;
+#endif
+ goto error_return;
+}
+
+static void sa1100_tx_chars(struct sa1100_port *sport)
+{
+ struct circ_buf *xmit = &sport->port.info->xmit;
+
+ if (sport->port.x_char) {
+ UART_PUT_CHAR(sport, sport->port.x_char);
+ sport->port.icount.tx++;
+ sport->port.x_char = 0;
+ return;
+ }
+
+ /*
+ * Check the modem control lines before
+ * transmitting anything.
+ */
+ sa1100_mctrl_check(sport);
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(&sport->port)) {
+ __sa1100_stop_tx(sport);
+ return;
+ }
+
+ /*
+ * Tried using FIFO (not checking TNF) for fifo fill:
+ * still had the '4 bytes repeated' problem.
+ */
+ while (UART_GET_UTSR1(sport) & UTSR1_TNF) {
+ UART_PUT_CHAR(sport, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ sport->port.icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
+ }
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_event(&sport->port, EVT_WRITE_WAKEUP);
+
+ if (uart_circ_empty(xmit))
+ __sa1100_stop_tx(sport);
+}
+
+static void sa1100_int(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct sa1100_port *sport = dev_id;
+ unsigned int status, pass_counter = 0;
+
+ spin_lock(&sport->port.lock);
+ status = UART_GET_UTSR0(sport);
+ status &= SM_TO_UTSR0(sport->port.read_status_mask) | ~UTSR0_TFS;
+ do {
+ if (status & (UTSR0_RFS | UTSR0_RID)) {
+ /* Clear the receiver idle bit, if set */
+ if (status & UTSR0_RID)
+ UART_PUT_UTSR0(sport, UTSR0_RID);
+ sa1100_rx_chars(sport, regs);
+ }
+
+ /* Clear the relevent break bits */
+ if (status & (UTSR0_RBB | UTSR0_REB))
+ UART_PUT_UTSR0(sport, status & (UTSR0_RBB | UTSR0_REB));
+
+ if (status & UTSR0_RBB)
+ sport->port.icount.brk++;
+
+ if (status & UTSR0_REB)
+ uart_handle_break(&sport->port);
+
+ if (status & UTSR0_TFS)
+ sa1100_tx_chars(sport);
+ if (pass_counter++ > SA1100_ISR_PASS_LIMIT)
+ break;
+ status = UART_GET_UTSR0(sport);
+ status &= SM_TO_UTSR0(sport->port.read_status_mask) |
+ ~UTSR0_TFS;
+ } while (status & (UTSR0_TFS | UTSR0_RFS | UTSR0_RID));
+ spin_unlock(&sport->port.lock);
+}
+
+/*
+ * Return TIOCSER_TEMT when transmitter is not busy.
+ */
+static unsigned int sa1100_tx_empty(struct uart_port *port)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+
+ return UART_GET_UTSR1(sport) & UTSR1_TBY ? 0 : TIOCSER_TEMT;
+}
+
+static unsigned int sa1100_get_mctrl(struct uart_port *port)
+{
+ return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
+}
+
+static void sa1100_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+}
+
+/*
+ * Interrupts always disabled.
+ */
+static void sa1100_break_ctl(struct uart_port *port, int break_state)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+ unsigned long flags;
+ unsigned int utcr3;
+
+ spin_lock_irqsave(&sport->port.lock, flags);
+ utcr3 = UART_GET_UTCR3(sport);
+ if (break_state == -1)
+ utcr3 |= UTCR3_BRK;
+ else
+ utcr3 &= ~UTCR3_BRK;
+ UART_PUT_UTCR3(sport, utcr3);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
+}
+
+static int sa1100_startup(struct uart_port *port)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+ int retval;
+
+ /*
+ * Allocate the IRQ
+ */
+ retval = request_irq(sport->port.irq, sa1100_int, 0,
+ "serial_sa1100", sport);
+ if (retval)
+ return retval;
+
+ /*
+ * Finally, clear and enable interrupts
+ */
+ UART_PUT_UTSR0(sport, -1);
+ UART_PUT_UTCR3(sport, UTCR3_RXE | UTCR3_TXE | UTCR3_RIE);
+
+ /*
+ * Enable modem status interrupts
+ */
+ sa1100_enable_ms(&sport->port);
+
+ return 0;
+}
+
+static void sa1100_shutdown(struct uart_port *port)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+
+ /*
+ * Stop our timer.
+ */
+ del_timer_sync(&sport->timer);
+
+ /*
+ * Free the interrupt
+ */
+ free_irq(sport->port.irq, sport);
+
+ /*
+ * Disable all interrupts, port and break condition.
+ */
+ UART_PUT_UTCR3(sport, 0);
+}
+
+static void
+sa1100_change_speed(struct uart_port *port, unsigned int cflag,
+ unsigned int iflag, unsigned int quot)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+ unsigned long flags;
+ unsigned int utcr0, old_utcr3;
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ case CS7:
+ utcr0 = 0;
+ break;
+ default:
+ utcr0 = UTCR0_DSS;
+ break;
+ }
+ if (cflag & CSTOPB)
+ utcr0 |= UTCR0_SBS;
+ if (cflag & PARENB) {
+ utcr0 |= UTCR0_PE;
+ if (!(cflag & PARODD))
+ utcr0 |= UTCR0_OES;
+ }
+
+ sport->port.read_status_mask &= UTSR0_TO_SM(UTSR0_TFS);
+ sport->port.read_status_mask |= UTSR1_TO_SM(UTSR1_ROR);
+ if (iflag & INPCK)
+ sport->port.read_status_mask |=
+ UTSR1_TO_SM(UTSR1_FRE | UTSR1_PRE);
+ if (iflag & (BRKINT | PARMRK))
+ sport->port.read_status_mask |=
+ UTSR0_TO_SM(UTSR0_RBB | UTSR0_REB);
+
+ /*
+ * Characters to ignore
+ */
+ sport->port.ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ sport->port.ignore_status_mask |=
+ UTSR1_TO_SM(UTSR1_FRE | UTSR1_PRE);
+ if (iflag & IGNBRK) {
+ sport->port.ignore_status_mask |=
+ UTSR0_TO_SM(UTSR0_RBB | UTSR0_REB);
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns too (for real raw support).
+ */
+ if (iflag & IGNPAR)
+ sport->port.ignore_status_mask |=
+ UTSR1_TO_SM(UTSR1_ROR);
+ }
+
+ del_timer_sync(&sport->timer);
+
+ /* first, disable interrupts and drain transmitter */
+ spin_lock_irqsave(&sport->port.lock, flags);
+ old_utcr3 = UART_GET_UTCR3(sport);
+ UART_PUT_UTCR3(sport, old_utcr3 & ~(UTCR3_RIE | UTCR3_TIE));
+
+ while (UART_GET_UTSR1(sport) & UTSR1_TBY);
+
+ /* then, disable everything */
+ UART_PUT_UTCR3(sport, 0);
+
+ /* set the parity, stop bits and data size */
+ UART_PUT_UTCR0(sport, utcr0);
+
+ /* set the baud rate */
+ quot -= 1;
+ UART_PUT_UTCR1(sport, ((quot & 0xf00) >> 8));
+ UART_PUT_UTCR2(sport, (quot & 0xff));
+
+ UART_PUT_UTSR0(sport, -1);
+
+ UART_PUT_UTCR3(sport, old_utcr3);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
+
+ if (UART_ENABLE_MS(&sport->port, cflag))
+ sa1100_enable_ms(&sport->port);
+}
+
+static const char *sa1100_type(struct uart_port *port)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+
+ return sport->port.type == PORT_SA1100 ? "SA1100" : NULL;
+}
+
+/*
+ * Release the memory region(s) being used by 'port'.
+ */
+static void sa1100_release_port(struct uart_port *port)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+
+ release_mem_region(sport->port.mapbase, UART_PORT_SIZE);
+}
+
+/*
+ * Request the memory region(s) being used by 'port'.
+ */
+static int sa1100_request_port(struct uart_port *port)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+
+ return request_mem_region(sport->port.mapbase, UART_PORT_SIZE,
+ "serial_sa1100") != NULL ? 0 : -EBUSY;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void sa1100_config_port(struct uart_port *port, int flags)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+
+ if (flags & UART_CONFIG_TYPE &&
+ sa1100_request_port(&sport->port) == 0)
+ sport->port.type = PORT_SA1100;
+}
+
+/*
+ * Verify the new serial_struct (for TIOCSSERIAL).
+ * The only change we allow are to the flags and type, and
+ * even then only between PORT_SA1100 and PORT_UNKNOWN
+ */
+static int
+sa1100_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ struct sa1100_port *sport = (struct sa1100_port *)port;
+ int ret = 0;
+
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_SA1100)
+ ret = -EINVAL;
+ if (sport->port.irq != ser->irq)
+ ret = -EINVAL;
+ if (ser->io_type != SERIAL_IO_MEM)
+ ret = -EINVAL;
+ if (sport->port.uartclk / 16 != ser->baud_base)
+ ret = -EINVAL;
+ if ((void *)sport->port.mapbase != ser->iomem_base)
+ ret = -EINVAL;
+ if (sport->port.iobase != ser->port)
+ ret = -EINVAL;
+ if (ser->hub6 != 0)
+ ret = -EINVAL;
+ return ret;
+}
+
+static struct uart_ops sa1100_pops = {
+ tx_empty: sa1100_tx_empty,
+ set_mctrl: sa1100_set_mctrl,
+ get_mctrl: sa1100_get_mctrl,
+ stop_tx: sa1100_stop_tx,
+ start_tx: sa1100_start_tx,
+ stop_rx: sa1100_stop_rx,
+ enable_ms: sa1100_enable_ms,
+ break_ctl: sa1100_break_ctl,
+ startup: sa1100_startup,
+ shutdown: sa1100_shutdown,
+ change_speed: sa1100_change_speed,
+ type: sa1100_type,
+ release_port: sa1100_release_port,
+ request_port: sa1100_request_port,
+ config_port: sa1100_config_port,
+ verify_port: sa1100_verify_port,
+};
+
+static struct sa1100_port sa1100_ports[NR_PORTS];
+
+/*
+ * Setup the SA1100 serial ports. Note that we don't include the IrDA
+ * port here since we have our own SIR/FIR driver (see drivers/net/irda)
+ *
+ * Note also that we support "console=ttySAx" where "x" is either 0 or 1.
+ * Which serial port this ends up being depends on the machine you're
+ * running this kernel on. I'm not convinced that this is a good idea,
+ * but that's the way it traditionally works.
+ *
+ * Note that NanoEngine UART3 becomes UART2, and UART2 is no longer
+ * used here.
+ */
+static void __init sa1100_init_ports(void)
+{
+ static int first = 1;
+ int i;
+
+ if (!first)
+ return;
+ first = 0;
+
+ for (i = 0; i < NR_PORTS; i++) {
+ sa1100_ports[i].port.uartclk = 3686400;
+ sa1100_ports[i].port.ops = &sa1100_pops;
+ sa1100_ports[i].port.fifosize = 8;
+ sa1100_ports[i].port.line = i;
+ sa1100_ports[i].port.iotype = SERIAL_IO_MEM;
+ init_timer(&sa1100_ports[i].timer);
+ sa1100_ports[i].timer.function = sa1100_timeout;
+ sa1100_ports[i].timer.data = (unsigned long)&sa1100_ports[i];
+ }
+
+ /*
+ * make transmit lines outputs, so that when the port
+ * is closed, the output is in the MARK state.
+ */
+ PPDR |= PPC_TXD1 | PPC_TXD3;
+ PPSR |= PPC_TXD1 | PPC_TXD3;
+}
+
+void __init sa1100_register_uart_fns(struct sa1100_port_fns *fns)
+{
+ if (fns->get_mctrl)
+ sa1100_pops.get_mctrl = fns->get_mctrl;
+ if (fns->set_mctrl)
+ sa1100_pops.set_mctrl = fns->set_mctrl;
+
+ sa1100_pops.pm = fns->pm;
+ sa1100_pops.set_wake = fns->set_wake;
+}
+
+void __init sa1100_register_uart(int idx, int port)
+{
+ if (idx >= NR_PORTS) {
+ printk(KERN_ERR __FUNCTION__ ": bad index number %d\n", idx);
+ return;
+ }
+
+ switch (port) {
+ case 1:
+ sa1100_ports[idx].port.membase = (void *)&Ser1UTCR0;
+ sa1100_ports[idx].port.mapbase = _Ser1UTCR0;
+ sa1100_ports[idx].port.irq = IRQ_Ser1UART;
+ sa1100_ports[idx].port.flags = ASYNC_BOOT_AUTOCONF;
+ break;
+
+ case 2:
+ sa1100_ports[idx].port.membase = (void *)&Ser2UTCR0;
+ sa1100_ports[idx].port.mapbase = _Ser2UTCR0;
+ sa1100_ports[idx].port.irq = IRQ_Ser2ICP;
+ sa1100_ports[idx].port.flags = ASYNC_BOOT_AUTOCONF;
+ break;
+
+ case 3:
+ sa1100_ports[idx].port.membase = (void *)&Ser3UTCR0;
+ sa1100_ports[idx].port.mapbase = _Ser3UTCR0;
+ sa1100_ports[idx].port.irq = IRQ_Ser3UART;
+ sa1100_ports[idx].port.flags = ASYNC_BOOT_AUTOCONF;
+ break;
+
+ default:
+ printk(KERN_ERR __FUNCTION__ ": bad port number %d\n", port);
+ }
+}
+
+
+#ifdef CONFIG_SERIAL_SA1100_CONSOLE
+
+/*
+ * Interrupts are disabled on entering
+ */
+static void
+sa1100_console_write(struct console *co, const char *s, unsigned int count)
+{
+ struct sa1100_port *sport = &sa1100_ports[co->index];
+ unsigned int old_utcr3, status, i;
+
+ /*
+ * First, save UTCR3 and then disable interrupts
+ */
+ old_utcr3 = UART_GET_UTCR3(sport);
+ UART_PUT_UTCR3(sport, (old_utcr3 & ~(UTCR3_RIE | UTCR3_TIE)) |
+ UTCR3_TXE);
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++) {
+ do {
+ status = UART_GET_UTSR1(sport);
+ } while (!(status & UTSR1_TNF));
+ UART_PUT_CHAR(sport, s[i]);
+ if (s[i] == '\n') {
+ do {
+ status = UART_GET_UTSR1(sport);
+ } while (!(status & UTSR1_TNF));
+ UART_PUT_CHAR(sport, '\r');
+ }
+ }
+
+ /*
+ * Finally, wait for transmitter to become empty
+ * and restore UTCR3
+ */
+ do {
+ status = UART_GET_UTSR1(sport);
+ } while (status & UTSR1_TBY);
+ UART_PUT_UTCR3(sport, old_utcr3);
+}
+
+static kdev_t sa1100_console_device(struct console *co)
+{
+ return mk_kdev(SERIAL_SA1100_MAJOR, MINOR_START + co->index);
+}
+
+/*
+ * If the port was already initialised (eg, by a boot loader),
+ * try to determine the current setup.
+ */
+static void __init
+sa1100_console_get_options(struct sa1100_port *sport, int *baud,
+ int *parity, int *bits)
+{
+ unsigned int utcr3;
+
+ utcr3 = UART_GET_UTCR3(sport) & (UTCR3_RXE | UTCR3_TXE);
+ if (utcr3 == (UTCR3_RXE | UTCR3_TXE)) {
+ /* ok, the port was enabled */
+ unsigned int utcr0, quot;
+
+ utcr0 = UART_GET_UTCR0(sport);
+
+ *parity = 'n';
+ if (utcr0 & UTCR0_PE) {
+ if (utcr0 & UTCR0_OES)
+ *parity = 'e';
+ else
+ *parity = 'o';
+ }
+
+ if (utcr0 & UTCR0_DSS)
+ *bits = 8;
+ else
+ *bits = 7;
+
+ quot = UART_GET_UTCR2(sport) | UART_GET_UTCR1(sport) << 8;
+ quot &= 0xfff;
+ *baud = sport->port.uartclk / (16 * (quot + 1));
+ }
+}
+
+static int __init
+sa1100_console_setup(struct console *co, char *options)
+{
+ struct sa1100_port *sport;
+ int baud = 9600;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ if (co->index == -1 || co->index >= NR_PORTS)
+ co->index = 0;
+ sport = &sa1100_ports[co->index];
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ sa1100_console_get_options(sport, &baud, &parity, &bits);
+
+ return uart_set_options(&sport->port, co, baud, parity, bits, flow);
+}
+
+static struct console sa1100_console = {
+ name: "ttySA",
+ write: sa1100_console_write,
+ device: sa1100_console_device,
+ setup: sa1100_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: -1,
+};
+
+void __init sa1100_rs_console_init(void)
+{
+ sa1100_init_ports();
+ register_console(&sa1100_console);
+}
+
+#define SA1100_CONSOLE &sa1100_console
+#else
+#define SA1100_CONSOLE NULL
+#endif
+
+static struct uart_driver sa1100_reg = {
+ owner: THIS_MODULE,
+ driver_name: "ttySA",
+#ifdef CONFIG_DEVFS_FS
+ dev_name: "ttySA%d",
+#else
+ dev_name: "ttySA",
+#endif
+ major: SERIAL_SA1100_MAJOR,
+ minor: MINOR_START,
+ nr: NR_PORTS,
+ cons: SA1100_CONSOLE,
+};
+
+static int __init sa1100_serial_init(void)
+{
+ int ret;
+
+ printk(KERN_INFO "Serial: SA11x0 driver $Revision: 1.41 $\n");
+
+ sa1100_init_ports();
+ ret = uart_register_driver(&sa1100_reg);
+ if (ret == 0) {
+ int i;
+
+ for (i = 0; i < NR_PORTS; i++)
+ uart_add_one_port(&sa1100_reg, &sa1100_ports[i].port);
+ }
+ return ret;
+}
+
+static void __exit sa1100_serial_exit(void)
+{
+ int i;
+
+ for (i = 0; i < NR_PORTS; i++)
+ uart_remove_one_port(&sa1100_reg, &sa1100_ports[i].port);
+
+ uart_unregister_driver(&sa1100_reg);
+}
+
+module_init(sa1100_serial_init);
+module_exit(sa1100_serial_exit);
+
+EXPORT_NO_SYMBOLS;
+
+MODULE_AUTHOR("Deep Blue Solutions Ltd");
+MODULE_DESCRIPTION("SA1100 generic serial port driver $Revision: 1.41 $");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * linux/drivers/char/serial_uart00.c
+ *
+ * Driver for UART00 serial ports
+ *
+ * Based on drivers/char/serial_amba.c, by ARM Limited &
+ * Deep Blue Solutions Ltd.
+ * Copyright 2001 Altera Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * $Id: serial_uart00.c,v 1.32 2002/07/20 17:10:04 rmk Exp $
+ *
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/circ_buf.h>
+#include <linux/serial.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/pld/pld_hotswap.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/bitops.h>
+#include <asm/sizes.h>
+
+#if defined(CONFIG_SERIAL_UART00_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/serial_core.h>
+#include <asm/arch/excalibur.h>
+#define UART00_TYPE (volatile unsigned int*)
+#include <asm/arch/uart00.h>
+#include <asm/arch/int_ctrl00.h>
+
+#define UART_NR 2
+
+#define SERIAL_UART00_NAME "ttyUA"
+#define SERIAL_UART00_MAJOR 204
+#define SERIAL_UART00_MINOR 16 /* Temporary - will change in future */
+#define SERIAL_UART00_NR UART_NR
+#define UART_PORT_SIZE 0x50
+
+#define UART00_ISR_PASS_LIMIT 256
+
+/*
+ * Access macros for the UART00 UARTs
+ */
+#define UART_GET_INT_STATUS(p) inl(UART_ISR((p)->membase))
+#define UART_PUT_IES(p, c) outl(c,UART_IES((p)->membase))
+#define UART_GET_IES(p) inl(UART_IES((p)->membase))
+#define UART_PUT_IEC(p, c) outl(c,UART_IEC((p)->membase))
+#define UART_GET_IEC(p) inl(UART_IEC((p)->membase))
+#define UART_PUT_CHAR(p, c) outl(c,UART_TD((p)->membase))
+#define UART_GET_CHAR(p) inl(UART_RD((p)->membase))
+#define UART_GET_RSR(p) inl(UART_RSR((p)->membase))
+#define UART_GET_RDS(p) inl(UART_RDS((p)->membase))
+#define UART_GET_MSR(p) inl(UART_MSR((p)->membase))
+#define UART_GET_MCR(p) inl(UART_MCR((p)->membase))
+#define UART_PUT_MCR(p, c) outl(c,UART_MCR((p)->membase))
+#define UART_GET_MC(p) inl(UART_MC((p)->membase))
+#define UART_PUT_MC(p, c) outl(c,UART_MC((p)->membase))
+#define UART_GET_TSR(p) inl(UART_TSR((p)->membase))
+#define UART_GET_DIV_HI(p) inl(UART_DIV_HI((p)->membase))
+#define UART_PUT_DIV_HI(p,c) outl(c,UART_DIV_HI((p)->membase))
+#define UART_GET_DIV_LO(p) inl(UART_DIV_LO((p)->membase))
+#define UART_PUT_DIV_LO(p,c) outl(c,UART_DIV_LO((p)->membase))
+#define UART_RX_DATA(s) ((s) & UART_RSR_RX_LEVEL_MSK)
+#define UART_TX_READY(s) (((s) & UART_TSR_TX_LEVEL_MSK) < 15)
+//#define UART_TX_EMPTY(p) ((UART_GET_FR(p) & UART00_UARTFR_TMSK) == 0)
+
+static void uart00_stop_tx(struct uart_port *port, unsigned int tty_stop)
+{
+ UART_PUT_IEC(port, UART_IEC_TIE_MSK);
+}
+
+static void uart00_stop_rx(struct uart_port *port)
+{
+ UART_PUT_IEC(port, UART_IEC_RE_MSK);
+}
+
+static void uart00_enable_ms(struct uart_port *port)
+{
+ UART_PUT_IES(port, UART_IES_ME_MSK);
+}
+
+static void
+uart00_rx_chars(struct uart_port *port, struct pt_regs *regs)
+{
+ struct tty_struct *tty = port->info->tty;
+ unsigned int status, ch, rds, flg, ignored = 0;
+
+ status = UART_GET_RSR(port);
+ while (UART_RX_DATA(status)) {
+ /*
+ * We need to read rds before reading the
+ * character from the fifo
+ */
+ rds = UART_GET_RDS(port);
+ ch = UART_GET_CHAR(port);
+ port->icount.rx++;
+
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+
+ flg = TTY_NORMAL;
+
+ /*
+ * Note that the error handling code is
+ * out of the main execution path
+ */
+ if (rds & (UART_RDS_BI_MSK |UART_RDS_FE_MSK|
+ UART_RDS_PE_MSK |UART_RDS_PE_MSK))
+ goto handle_error;
+ if (uart_handle_sysrq_char(port, ch, regs))
+ goto ignore_char;
+
+ error_return:
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ ignore_char:
+ status = UART_GET_RSR(port);
+ }
+ out:
+ tty_flip_buffer_push(tty);
+ return;
+
+ handle_error:
+ if (rds & UART_RDS_BI_MSK) {
+ status &= ~(UART_RDS_FE_MSK | UART_RDS_PE_MSK);
+ port->icount.brk++;
+ if (uart_handle_break(port))
+ goto ignore_char;
+ } else if (rds & UART_RDS_PE_MSK)
+ port->icount.parity++;
+ else if (rds & UART_RDS_PE_MSK)
+ port->icount.frame++;
+ if (rds & UART_RDS_OE_MSK)
+ port->icount.overrun++;
+
+ if (rds & port->ignore_status_mask) {
+ if (++ignored > 100)
+ goto out;
+ goto ignore_char;
+ }
+ rds &= port->read_status_mask;
+
+ if (rds & UART_RDS_BI_MSK)
+ flg = TTY_BREAK;
+ else if (rds & UART_RDS_PE_MSK)
+ flg = TTY_PARITY;
+ else if (rds & UART_RDS_FE_MSK)
+ flg = TTY_FRAME;
+
+ if (status & UART_RDS_OE_MSK) {
+ /*
+ * CHECK: does overrun affect the current character?
+ * ASSUMPTION: it does not.
+ */
+ *tty->flip.flag_buf_ptr++ = flg;
+ *tty->flip.char_buf_ptr++ = ch;
+ tty->flip.count++;
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ goto ignore_char;
+ ch = 0;
+ flg = TTY_OVERRUN;
+ }
+#ifdef SUPPORT_SYSRQ
+ port->sysrq = 0;
+#endif
+ goto error_return;
+}
+
+static void uart00_tx_chars(struct uart_port *port)
+{
+ struct circ_buf *xmit = &port->info->xmit;
+ int count;
+
+ if (port->x_char) {
+ while ((UART_GET_TSR(port) & UART_TSR_TX_LEVEL_MSK) == 15);
+ UART_PUT_CHAR(port, port->x_char);
+ port->icount.tx++;
+ port->x_char = 0;
+ return;
+ }
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ uart00_stop_tx(port, 0);
+ return;
+ }
+
+ count = port->fifosize >> 1;
+ do {
+ while ((UART_GET_TSR(port) & UART_TSR_TX_LEVEL_MSK) == 15);
+ UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
+ } while (--count > 0);
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_event(port, EVT_WRITE_WAKEUP);
+
+ if (uart_circ_empty(xmit))
+ uart00_stop_tx(port, 0);
+}
+
+static void uart00_start_tx(struct uart_port *port, unsigned int tty_start)
+{
+ UART_PUT_IES(port, UART_IES_TIE_MSK);
+ uart00_tx_chars(port);
+}
+
+static void uart00_modem_status(struct uart_port *port)
+{
+ unsigned int status;
+
+ status = UART_GET_MSR(port);
+
+ if (!status & (UART_MSR_DCTS_MSK | UART_MSR_DDSR_MSK |
+ UART_MSR_TERI_MSK | UART_MSR_DDCD_MSK))
+ return;
+
+ if (status & UART_MSR_DDCD_MSK)
+ uart_handle_dcd_change(port, status & UART_MSR_DCD_MSK);
+
+ if (status & UART_MSR_DDSR_MSK)
+ port->icount.dsr++;
+
+ if (status & UART_MSR_DCTS_MSK)
+ uart_handle_cts_change(port, status & UART_MSR_CTS_MSK);
+
+ wake_up_interruptible(&port->info->delta_msr_wait);
+}
+
+static void uart00_int(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uart_port *port = dev_id;
+ unsigned int status, pass_counter = 0;
+
+ status = UART_GET_INT_STATUS(port);
+ do {
+ if (status & UART_ISR_RI_MSK)
+ uart00_rx_chars(port, regs);
+ if (status & UART_ISR_MI_MSK)
+ uart00_modem_status(port);
+ if (status & (UART_ISR_TI_MSK | UART_ISR_TII_MSK))
+ uart00_tx_chars(port);
+ if (pass_counter++ > UART00_ISR_PASS_LIMIT)
+ break;
+
+ status = UART_GET_INT_STATUS(port);
+ } while (status);
+}
+
+static unsigned int uart00_tx_empty(struct uart_port *port)
+{
+ return UART_GET_TSR(port) & UART_TSR_TX_LEVEL_MSK? 0 : TIOCSER_TEMT;
+}
+
+static unsigned int uart00_get_mctrl(struct uart_port *port)
+{
+ unsigned int result = 0;
+ unsigned int status;
+
+ status = UART_GET_MSR(port);
+ if (status & UART_MSR_DCD_MSK)
+ result |= TIOCM_CAR;
+ if (status & UART_MSR_DSR_MSK)
+ result |= TIOCM_DSR;
+ if (status & UART_MSR_CTS_MSK)
+ result |= TIOCM_CTS;
+ if (status & UART_MSR_RI_MSK)
+ result |= TIOCM_RI;
+
+ return result;
+}
+
+static void uart00_set_mctrl_null(struct uart_port *port, unsigned int mctrl)
+{
+}
+
+static void uart00_break_ctl(struct uart_port *port, int break_state)
+{
+ unsigned long flags;
+ unsigned int mcr;
+
+ spin_lock_irqsave(&port->lock, flags);
+ mcr = UART_GET_MCR(port);
+ if (break_state == -1)
+ mcr |= UART_MCR_BR_MSK;
+ else
+ mcr &= ~UART_MCR_BR_MSK;
+ UART_PUT_MCR(port, mcr);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static void
+uart00_change_speed(struct uart_port *port, unsigned int cflag,
+ unsigned int iflag, unsigned int quot)
+{
+ unsigned int uart_mc, old_ies;
+ unsigned long flags;
+
+ /* byte size and parity */
+ switch (cflag & CSIZE) {
+ case CS5:
+ uart_mc = UART_MC_CLS_CHARLEN_5;
+ break;
+ case CS6:
+ uart_mc = UART_MC_CLS_CHARLEN_6;
+ break;
+ case CS7:
+ uart_mc = UART_MC_CLS_CHARLEN_7;
+ break;
+ default: // CS8
+ uart_mc = UART_MC_CLS_CHARLEN_8;
+ break;
+ }
+ if (cflag & CSTOPB)
+ uart_mc|= UART_MC_ST_TWO;
+ if (cflag & PARENB) {
+ uart_mc |= UART_MC_PE_MSK;
+ if (!(cflag & PARODD))
+ uart_mc |= UART_MC_EP_MSK;
+ }
+
+ port->read_status_mask = UART_RDS_OE_MSK;
+ if (iflag & INPCK)
+ port->read_status_mask |= UART_RDS_FE_MSK | UART_RDS_PE_MSK;
+ if (iflag & (BRKINT | PARMRK))
+ port->read_status_mask |= UART_RDS_BI_MSK;
+
+ /*
+ * Characters to ignore
+ */
+ port->ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= UART_RDS_FE_MSK | UART_RDS_PE_MSK;
+ if (iflag & IGNBRK) {
+ port->ignore_status_mask |= UART_RDS_BI_MSK;
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns to (for real raw support).
+ */
+ if (iflag & IGNPAR)
+ port->ignore_status_mask |= UART_RDS_OE_MSK;
+ }
+
+ /* first, disable everything */
+ spin_lock_irqsave(&port->lock, flags);
+ old_ies = UART_GET_IES(port);
+
+ if (UART_ENABLE_MS(port, cflag))
+ old_ies |= UART_IES_ME_MSK;
+
+ /* Set baud rate */
+ UART_PUT_DIV_LO(port, (quot & 0xff));
+ UART_PUT_DIV_HI(port, ((quot & 0xf00) >> 8));
+
+ UART_PUT_MC(port, uart_mc);
+ UART_PUT_IES(port, old_ies);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static int uart00_startup(struct uart_port *port)
+{
+ int result;
+
+ /*
+ * Allocate the IRQ
+ */
+ result = request_irq(port->irq, uart00_int, 0, "uart00", port);
+ if (result) {
+ printk(KERN_ERR "Request of irq %d failed\n", port->irq);
+ return result;
+ }
+
+ /*
+ * Finally, enable interrupts. Use the TII interrupt to minimise
+ * the number of interrupts generated. If higher performance is
+ * needed, consider using the TI interrupt with a suitable FIFO
+ * threshold
+ */
+ UART_PUT_IES(port, UART_IES_RE_MSK | UART_IES_TIE_MSK);
+
+ return 0;
+}
+
+static void uart00_shutdown(struct uart_port *port)
+{
+ /*
+ * disable all interrupts, disable the port
+ */
+ UART_PUT_IEC(port, 0xff);
+
+ /* disable break condition and fifos */
+ UART_PUT_MCR(port, UART_GET_MCR(port) &~UART_MCR_BR_MSK);
+
+ /*
+ * Free the interrupt
+ */
+ free_irq(port->irq, port);
+}
+
+static const char *uart00_type(struct uart_port *port)
+{
+ return port->type == PORT_UART00 ? "Altera UART00" : NULL;
+}
+
+/*
+ * Release the memory region(s) being used by 'port'
+ */
+static void uart00_release_port(struct uart_port *port)
+{
+ release_mem_region(port->mapbase, UART_PORT_SIZE);
+
+#ifdef CONFIG_ARCH_CAMELOT
+ if (port->membase != (void*)IO_ADDRESS(EXC_UART00_BASE)) {
+ iounmap(port->membase);
+ }
+#endif
+}
+
+/*
+ * Request the memory region(s) being used by 'port'
+ */
+static int uart00_request_port(struct uart_port *port)
+{
+ return request_mem_region(port->mapbase, UART_PORT_SIZE, "serial_uart00")
+ != NULL ? 0 : -EBUSY;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void uart00_config_port(struct uart_port *port, int flags)
+{
+
+ /*
+ * Map the io memory if this is a soft uart
+ */
+ if (!port->membase)
+ port->membase = ioremap_nocache(port->mapbase,SZ_4K);
+
+ if (!port->membase)
+ printk(KERN_ERR "serial00: cannot map io memory\n");
+ else
+ port->type = PORT_UART00;
+
+}
+
+/*
+ * verify the new serial_struct (for TIOCSSERIAL).
+ */
+static int uart00_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ int ret = 0;
+ if (ser->type != PORT_UNKNOWN && ser->type != PORT_UART00)
+ ret = -EINVAL;
+ if (ser->irq < 0 || ser->irq >= NR_IRQS)
+ ret = -EINVAL;
+ if (ser->baud_base < 9600)
+ ret = -EINVAL;
+ return ret;
+}
+
+static struct uart_ops uart00_pops = {
+ tx_empty: uart00_tx_empty,
+ set_mctrl: uart00_set_mctrl_null,
+ get_mctrl: uart00_get_mctrl,
+ stop_tx: uart00_stop_tx,
+ start_tx: uart00_start_tx,
+ stop_rx: uart00_stop_rx,
+ enable_ms: uart00_enable_ms,
+ break_ctl: uart00_break_ctl,
+ startup: uart00_startup,
+ shutdown: uart00_shutdown,
+ change_speed: uart00_change_speed,
+ type: uart00_type,
+ release_port: uart00_release_port,
+ request_port: uart00_request_port,
+ config_port: uart00_config_port,
+ verify_port: uart00_verify_port,
+};
+
+
+#ifdef CONFIG_ARCH_CAMELOT
+static struct uart_port epxa10db_port = {
+ membase: (void*)IO_ADDRESS(EXC_UART00_BASE),
+ mapbase: EXC_UART00_BASE,
+ iotype: SERIAL_IO_MEM,
+ irq: IRQ_UART,
+ uartclk: EXC_AHB2_CLK_FREQUENCY,
+ fifosize: 16,
+ ops: &uart00_pops,
+ flags: ASYNC_BOOT_AUTOCONF,
+};
+#endif
+
+
+#ifdef CONFIG_SERIAL_UART00_CONSOLE
+static void uart00_console_write(struct console *co, const char *s, unsigned count)
+{
+#ifdef CONFIG_ARCH_CAMELOT
+ struct uart_port *port = &epxa10db_port;
+ unsigned int status, old_ies;
+ int i;
+
+ /*
+ * First save the CR then disable the interrupts
+ */
+ old_ies = UART_GET_IES(port);
+ UART_PUT_IEC(port,0xff);
+
+ /*
+ * Now, do each character
+ */
+ for (i = 0; i < count; i++) {
+ do {
+ status = UART_GET_TSR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, s[i]);
+ if (s[i] == '\n') {
+ do {
+ status = UART_GET_TSR(port);
+ } while (!UART_TX_READY(status));
+ UART_PUT_CHAR(port, '\r');
+ }
+ }
+
+ /*
+ * Finally, wait for transmitter to become empty
+ * and restore the IES
+ */
+ do {
+ status = UART_GET_TSR(port);
+ } while (status & UART_TSR_TX_LEVEL_MSK);
+ UART_PUT_IES(port, old_ies);
+#endif
+}
+
+static kdev_t uart00_console_device(struct console *co)
+{
+ return mk_kdev(SERIAL_UART00_MAJOR, SERIAL_UART00_MINOR + co->index);
+}
+
+static void __init
+uart00_console_get_options(struct uart_port *port, int *baud,
+ int *parity, int *bits)
+{
+ unsigned int uart_mc, quot;
+
+ uart_mc = UART_GET_MC(port);
+
+ *parity = 'n';
+ if (uart_mc & UART_MC_PE_MSK) {
+ if (uart_mc & UART_MC_EP_MSK)
+ *parity = 'e';
+ else
+ *parity = 'o';
+ }
+
+ switch (uart_mc & UART_MC_CLS_MSK) {
+ case UART_MC_CLS_CHARLEN_5:
+ *bits = 5;
+ break;
+ case UART_MC_CLS_CHARLEN_6:
+ *bits = 6;
+ break;
+ case UART_MC_CLS_CHARLEN_7:
+ *bits = 7;
+ break;
+ case UART_MC_CLS_CHARLEN_8:
+ *bits = 8;
+ break;
+ }
+ quot = UART_GET_DIV_LO(port) | (UART_GET_DIV_HI(port) << 8);
+ *baud = port->uartclk / (16 *quot );
+}
+
+static int __init uart00_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 38400;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+#ifdef CONFIG_ARCH_CAMELOT
+ port = &epxa10db_port; ;
+#else
+ return -ENODEV;
+#endif
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ uart00_console_get_options(port, &baud, &parity, &bits);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct console uart00_console = {
+ name: SERIAL_UART00_NAME,
+ write: uart00_console_write,
+ device: uart00_console_device,
+ setup: uart00_console_setup,
+ flags: CON_PRINTBUFFER,
+ index: 0,
+};
+
+void __init uart00_console_init(void)
+{
+ register_console(&uart00_console);
+}
+
+#define UART00_CONSOLE &uart00_console
+#else
+#define UART00_CONSOLE NULL
+#endif
+
+static struct uart_driver uart00_reg = {
+ owner: NULL,
+ driver_name: SERIAL_UART00_NAME,
+ dev_name: SERIAL_UART00_NAME,
+ major: SERIAL_UART00_MAJOR,
+ minor: SERIAL_UART00_MINOR,
+ nr: UART_NR,
+ cons: UART00_CONSOLE,
+};
+
+struct dev_port_entry{
+ unsigned int base_addr;
+ struct uart_port *port;
+};
+
+static struct dev_port_entry dev_port_map[UART_NR];
+
+#ifdef CONFIG_PLD_HOTSWAP
+/*
+ * Keep a mapping of dev_info addresses -> port lines to use when
+ * removing ports dev==NULL indicates unused entry
+ */
+
+struct uart00_ps_data{
+ unsigned int clk;
+ unsigned int fifosize;
+};
+
+int uart00_add_device(struct pldhs_dev_info* dev_info, void* dev_ps_data)
+{
+ struct uart00_ps_data* dev_ps=dev_ps_data;
+ struct uart_port * port;
+ int i,result;
+
+ i=0;
+ while(dev_port_map[i].port)
+ i++;
+
+ if(i==UART_NR){
+ printk(KERN_WARNING "uart00: Maximum number of ports reached\n");
+ return 0;
+ }
+
+ port=kmalloc(sizeof(struct uart_port),GFP_KERNEL);
+ if(!port)
+ return -ENOMEM;
+
+ printk("clk=%d fifo=%d\n",dev_ps->clk,dev_ps->fifosize);
+ port->membase=0;
+ port->mapbase=dev_info->base_addr;
+ port->iotype=SERIAL_IO_MEM;
+ port->irq=dev_info->irq;
+ port->uartclk=dev_ps->clk;
+ port->fifosize=dev_ps->fifosize;
+ port->ops=&uart00_pops;
+ port->line=i;
+ port->flags=ASYNC_BOOT_AUTOCONF;
+
+ result=uart_add_one_port(&uart00_reg, port);
+ if(result){
+ printk("uart_add_one_port returned %d\n",result);
+ return result;
+ }
+ dev_port_map[i].base_addr=dev_info->base_addr;
+ dev_port_map[i].port=port;
+ printk("uart00: added device at %x as ttyUA%d\n",dev_port_map[i].base_addr,i);
+ return 0;
+
+}
+
+int uart00_remove_devices(void)
+{
+ int i,result;
+
+
+ result=0;
+ for(i=1;i<UART_NR;i++){
+ if(dev_port_map[i].base_addr){
+ result=uart_remove_one_port(&uart00_reg, dev_port_map[i].port);
+ if(result)
+ return result;
+
+ /* port removed sucessfully, so now tidy up */
+ kfree(dev_port_map[i].port);
+ dev_port_map[i].base_addr=0;
+ dev_port_map[i].port=NULL;
+ }
+ }
+ return 0;
+
+}
+
+struct pld_hotswap_ops uart00_pldhs_ops={
+ name: "uart00",
+ add_device: uart00_add_device,
+ remove_devices:uart00_remove_devices,
+};
+
+#endif
+
+static int __init uart00_init(void)
+{
+ int result;
+
+ printk(KERN_INFO "Serial: UART00 driver $Revision: 1.32 $\n");
+
+ printk(KERN_WARNING "serial_uart00:Using temporary major/minor pairs"
+ " - these WILL change in the future\n");
+
+ result = uart_register_driver(&uart00_reg);
+ if (result)
+ return result;
+#ifdef CONFIG_ARCH_CAMELOT
+ result = uart_add_one_port(&uart00_reg,&epxa10db_port);
+#endif
+ if (result)
+ uart_unregister_driver(&uart00_reg);
+
+#ifdef CONFIG_PLD_HOTSWAP
+ pldhs_register_driver(&uart00_pldhs_ops);
+#endif
+ return result;
+}
+
+__initcall(uart00_init);
--- /dev/null
+/*
+ * linux/drivers/char/serial_core.h
+ *
+ * Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * $Id: serial_core.h,v 1.49 2002/07/20 18:06:32 rmk Exp $
+ */
+
+/*
+ * The type definitions. These are from Ted Ts'o's serial.h
+ */
+#define PORT_UNKNOWN 0
+#define PORT_8250 1
+#define PORT_16450 2
+#define PORT_16550 3
+#define PORT_16550A 4
+#define PORT_CIRRUS 5
+#define PORT_16650 6
+#define PORT_16650V2 7
+#define PORT_16750 8
+#define PORT_STARTECH 9
+#define PORT_16C950 10
+#define PORT_16654 11
+#define PORT_16850 12
+#define PORT_RSA 13
+#define PORT_MAX_8250 13 /* max port ID */
+
+/*
+ * ARM specific type numbers. These are not currently guaranteed
+ * to be implemented, and will change in the future. These are
+ * separate so any additions to the old serial.c that occur before
+ * we are merged can be easily merged here.
+ */
+#define PORT_AMBA 32
+#define PORT_CLPS711X 33
+#define PORT_SA1100 34
+#define PORT_UART00 35
+#define PORT_21285 37
+
+#ifdef __KERNEL__
+
+#include <linux/config.h>
+#include <linux/interrupt.h>
+#include <linux/circ_buf.h>
+#include <linux/spinlock.h>
+
+struct uart_port;
+struct uart_info;
+struct serial_struct;
+
+/*
+ * This structure describes all the operations that can be
+ * done on the physical hardware.
+ */
+struct uart_ops {
+ unsigned int (*tx_empty)(struct uart_port *);
+ void (*set_mctrl)(struct uart_port *, unsigned int mctrl);
+ unsigned int (*get_mctrl)(struct uart_port *);
+ void (*stop_tx)(struct uart_port *, unsigned int tty_stop);
+ void (*start_tx)(struct uart_port *, unsigned int tty_start);
+ void (*send_xchar)(struct uart_port *, char ch);
+ void (*stop_rx)(struct uart_port *);
+ void (*enable_ms)(struct uart_port *);
+ void (*break_ctl)(struct uart_port *, int ctl);
+ int (*startup)(struct uart_port *);
+ void (*shutdown)(struct uart_port *);
+ void (*change_speed)(struct uart_port *, unsigned int cflag,
+ unsigned int iflag, unsigned int quot);
+ void (*pm)(struct uart_port *, unsigned int state,
+ unsigned int oldstate);
+ int (*set_wake)(struct uart_port *, unsigned int state);
+
+ /*
+ * Return a string describing the type of the port
+ */
+ const char *(*type)(struct uart_port *);
+
+ /*
+ * Release IO and memory resources used by the port.
+ * This includes iounmap if necessary.
+ */
+ void (*release_port)(struct uart_port *);
+
+ /*
+ * Request IO and memory resources used by the port.
+ * This includes iomapping the port if necessary.
+ */
+ int (*request_port)(struct uart_port *);
+ void (*config_port)(struct uart_port *, int);
+ int (*verify_port)(struct uart_port *, struct serial_struct *);
+ int (*ioctl)(struct uart_port *, unsigned int, unsigned long);
+};
+
+#define UART_CONFIG_TYPE (1 << 0)
+#define UART_CONFIG_IRQ (1 << 1)
+
+struct uart_icount {
+ __u32 cts;
+ __u32 dsr;
+ __u32 rng;
+ __u32 dcd;
+ __u32 rx;
+ __u32 tx;
+ __u32 frame;
+ __u32 overrun;
+ __u32 parity;
+ __u32 brk;
+ __u32 buf_overrun;
+};
+
+struct uart_port {
+ spinlock_t lock; /* port lock */
+ unsigned int iobase; /* in/out[bwl] */
+ char *membase; /* read/write[bwl] */
+ unsigned int irq; /* irq number */
+ unsigned int uartclk; /* base uart clock */
+ unsigned char fifosize; /* tx fifo size */
+ unsigned char x_char; /* xon/xoff char */
+ unsigned char regshift; /* reg offset shift */
+ unsigned char iotype; /* io access style */
+
+#define UPIO_PORT (0)
+#define UPIO_HUB6 (1)
+#define UPIO_MEM (2)
+
+ unsigned int read_status_mask; /* driver specific */
+ unsigned int ignore_status_mask; /* driver specific */
+ struct uart_info *info; /* pointer to parent info */
+ struct uart_icount icount; /* statistics */
+
+ struct console *cons; /* struct console, if any */
+#ifdef CONFIG_SERIAL_CORE_CONSOLE
+ unsigned long sysrq; /* sysrq timeout */
+#endif
+
+ unsigned int flags;
+
+#define UPF_HUP_NOTIFY (1 << 0)
+#define UPF_SAK (1 << 2)
+#define UPF_SPD_MASK (0x1030)
+#define UPF_SPD_HI (0x0010)
+#define UPF_SPD_VHI (0x0020)
+#define UPF_SPD_CUST (0x0030)
+#define UPF_SPD_SHI (0x1000)
+#define UPF_SPD_WARP (0x1010)
+#define UPF_SKIP_TEST (1 << 6)
+#define UPF_AUTO_IRQ (1 << 7)
+#define UPF_HARDPPS_CD (1 << 11)
+#define UPF_LOW_LATENCY (1 << 13)
+#define UPF_BUGGY_UART (1 << 14)
+#define UPF_AUTOPROBE (1 << 15)
+#define UPF_BOOT_AUTOCONF (1 << 28)
+
+#define UPF_FLAGS (0x7fff)
+#define UPF_USR_MASK (UPF_SPD_MASK|UPF_LOW_LATENCY)
+
+ unsigned int mctrl; /* current modem ctrl settings */
+ unsigned int timeout; /* character-based timeout */
+ unsigned int type; /* port type */
+ struct uart_ops *ops;
+ unsigned int line; /* port index */
+ unsigned long mapbase; /* for ioremap */
+ unsigned char hub6; /* this should be in the 8250 driver */
+ unsigned char unused[3];
+};
+
+/*
+ * This is the state information which is persistent across opens.
+ * The low level driver must not to touch any elements contained
+ * within.
+ */
+struct uart_state {
+ unsigned int close_delay;
+ unsigned int closing_wait;
+
+#define USF_CLOSING_WAIT_INF (0)
+#define USF_CLOSING_WAIT_NONE (65535)
+
+ unsigned int custom_divisor;
+
+ int count;
+ struct uart_info *info;
+ struct uart_port *port;
+
+#ifdef CONFIG_PM
+ struct pm_dev *pm;
+#endif
+};
+
+#define UART_XMIT_SIZE 1024
+/*
+ * This is the state information which is only valid when the port
+ * is open; it may be freed by the core driver once the device has
+ * been closed. Either the low level driver or the core can modify
+ * stuff here.
+ */
+struct uart_info {
+ struct uart_port *port;
+ struct uart_state *state;
+ struct tty_struct *tty;
+ struct circ_buf xmit;
+ unsigned int flags;
+
+/*
+ * These are the flags that specific to info->flags, and reflect our
+ * internal state. They can not be accessed via port->flags. Low
+ * level drivers must not change these, but may query them instead.
+ */
+#define UIF_CHECK_CD (1 << 25)
+#define UIF_CTS_FLOW (1 << 26)
+#define UIF_CLOSING (1 << 27)
+#define UIF_NORMAL_ACTIVE (1 << 29)
+#define UIF_INITIALIZED (1 << 31)
+
+ unsigned char *tmpbuf;
+ struct semaphore tmpbuf_sem;
+
+ unsigned long event;
+ int blocked_open;
+
+ struct tasklet_struct tlet;
+
+ wait_queue_head_t open_wait;
+ wait_queue_head_t delta_msr_wait;
+};
+
+/* number of characters left in xmit buffer before we ask for more */
+#define WAKEUP_CHARS 256
+
+#define EVT_WRITE_WAKEUP 0
+
+struct module;
+struct tty_driver;
+
+struct uart_driver {
+ struct module *owner;
+ const char *driver_name;
+ const char *dev_name;
+ int major;
+ int minor;
+ int nr;
+ struct console *cons;
+
+ /*
+ * these are private; the low level driver should not
+ * touch these; they should be initialised to NULL
+ */
+ struct uart_state *state;
+ struct tty_driver *tty_driver;
+};
+
+void uart_event(struct uart_port *port, int event);
+struct uart_port *uart_get_console(struct uart_port *ports, int nr,
+ struct console *c);
+void uart_parse_options(char *options, int *baud, int *parity, int *bits,
+ int *flow);
+int uart_set_options(struct uart_port *port, struct console *co, int baud,
+ int parity, int bits, int flow);
+int uart_register_driver(struct uart_driver *uart);
+void uart_unregister_driver(struct uart_driver *uart);
+void uart_unregister_port(struct uart_driver *reg, int line);
+int uart_register_port(struct uart_driver *reg, struct uart_port *port);
+int uart_add_one_port(struct uart_driver *reg, struct uart_port *port);
+int uart_remove_one_port(struct uart_driver *reg, struct uart_port *port);
+
+#define uart_circ_empty(circ) ((circ)->head == (circ)->tail)
+#define uart_circ_clear(circ) ((circ)->head = (circ)->tail = 0)
+
+#define uart_circ_chars_pending(circ) \
+ (CIRC_CNT((circ)->head, (circ)->tail, UART_XMIT_SIZE))
+
+#define uart_circ_chars_free(circ) \
+ (CIRC_SPACE((circ)->head, (circ)->tail, UART_XMIT_SIZE))
+
+#define uart_tx_stopped(port) \
+ ((port)->info->tty->stopped || (port)->info->tty->hw_stopped)
+
+/*
+ * The following are helper functions for the low level drivers.
+ */
+#ifdef SUPPORT_SYSRQ
+static inline int
+uart_handle_sysrq_char(struct uart_port *port, unsigned int ch,
+ struct pt_regs *regs)
+{
+ if (port->sysrq) {
+ if (ch && time_before(jiffies, port->sysrq)) {
+ handle_sysrq(ch, regs, NULL);
+ port->sysrq = 0;
+ return 1;
+ }
+ port->sysrq = 0;
+ }
+ return 0;
+}
+#else
+#define uart_handle_sysrq_char(port,ch,regs) (0)
+#endif
+
+/*
+ * We do the SysRQ and SAK checking like this...
+ */
+static inline int uart_handle_break(struct uart_port *port)
+{
+ struct uart_info *info = port->info;
+#ifdef SUPPORT_SYSRQ
+ if (port->cons && port->cons->index == port->line) {
+ if (!port->sysrq) {
+ port->sysrq = jiffies + HZ*5;
+ return 1;
+ }
+ port->sysrq = 0;
+ }
+#endif
+ if (info->flags & UPF_SAK)
+ do_SAK(info->tty);
+ return 0;
+}
+
+/**
+ * uart_handle_dcd_change - handle a change of carrier detect state
+ * @port: uart_port structure for the open port
+ * @status: new carrier detect status, nonzero if active
+ */
+static inline void
+uart_handle_dcd_change(struct uart_port *port, unsigned int status)
+{
+ struct uart_info *info = port->info;
+
+ port->icount.dcd++;
+
+#ifdef CONFIG_HARD_PPS
+ if ((port->flags & UPF_HARDPPS_CD) && status)
+ hardpps();
+#endif
+
+ if (info->flags & UIF_CHECK_CD) {
+ if (status)
+ wake_up_interruptible(&info->open_wait);
+ else if (info->tty)
+ tty_hangup(info->tty);
+ }
+}
+
+/**
+ * uart_handle_cts_change - handle a change of clear-to-send state
+ * @port: uart_port structure for the open port
+ * @status: new clear to send status, nonzero if active
+ */
+static inline void
+uart_handle_cts_change(struct uart_port *port, unsigned int status)
+{
+ struct uart_info *info = port->info;
+ struct tty_struct *tty = info->tty;
+
+ port->icount.cts++;
+
+ if (info->flags & UIF_CTS_FLOW) {
+ if (tty->hw_stopped) {
+ if (status) {
+ tty->hw_stopped = 0;
+ port->ops->start_tx(port, 0);
+ uart_event(port, EVT_WRITE_WAKEUP);
+ }
+ } else {
+ if (!status) {
+ tty->hw_stopped = 1;
+ port->ops->stop_tx(port, 0);
+ }
+ }
+ }
+}
+
+/*
+ * UART_ENABLE_MS - determine if port should enable modem status irqs
+ */
+#define UART_ENABLE_MS(port,cflag) ((port)->flags & UPF_HARDPPS_CD || \
+ (cflag) & CRTSCTS || \
+ !(cflag) & CLOCAL)
+
+#endif
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