-/* $Id: sab82532.c,v 1.66 2002/01/08 16:00:16 davem Exp $
- * sab82532.c: ASYNC Driver for the SIEMENS SAB82532 DUSCC.
+/* sunsab.c: ASYNC Driver for the SIEMENS SAB82532 DUSCC.
*
* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
+ * Copyright (C) 2002 David S. Miller (davem@redhat.com)
*
* Rewrote buffer handling to use CIRC(Circular Buffer) macros.
* Maxim Krasnyanskiy <maxk@qualcomm.com>
* rates to be programmed into the UART. Also eliminated a lot of
* duplicated code in the console setup.
* Theodore Ts'o <tytso@mit.edu>, 2001-Oct-12
+ *
+ * Ported to new 2.5.x UART layer.
+ * David S. Miller <davem@redhat.com>
*/
#include <linux/config.h>
#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
+#include <linux/kernel.h>
#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
+#include <linux/errno.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
-#include <linux/serial.h>
-#include <linux/serialP.h>
-#include <linux/serial_reg.h>
-#include <linux/console.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/circ_buf.h>
+#include <linux/serial.h>
+#include <linux/console.h>
+#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/init.h>
-#include <linux/delay.h>
-#include <asm/sab82532.h>
-#include <asm/uaccess.h>
-#include <asm/ebus.h>
+#include <asm/io.h>
#include <asm/irq.h>
+#include <asm/oplib.h>
+#include <asm/ebus.h>
-#include "sunserial.h"
-
-static DECLARE_TASK_QUEUE(tq_serial);
-
-/* This is (one of many) a special gross hack to allow SU and
- * SAB serials to co-exist on the same machine. -DaveM
- */
-#undef SERIAL_BH
-#define SERIAL_BH AURORA_BH
-
-static struct tty_driver serial_driver, callout_driver;
-static int sab82532_refcount;
-
-#undef SERIAL_PARANOIA_CHECK
-#define SERIAL_DO_RESTART
-
-/* Set of debugging defines */
-#undef SERIAL_DEBUG_OPEN
-#undef SERIAL_DEBUG_FLOW
-#undef SERIAL_DEBUG_MODEM
-#undef SERIAL_DEBUG_WAIT_UNTIL_SENT
-#undef SERIAL_DEBUG_SEND_BREAK
-#undef SERIAL_DEBUG_INTR
-#undef SERIAL_DEBUG_FIFO
-#define SERIAL_DEBUG_OVERFLOW 1
-
-/* Trace things on serial device, useful for console debugging: */
-#undef SERIAL_LOG_DEVICE
-
-#ifdef SERIAL_LOG_DEVICE
-static void dprint_init(int tty);
-#endif
-
-static void change_speed(struct sab82532 *info);
-static void sab82532_wait_until_sent(struct tty_struct *tty, int timeout);
+#include <linux/serial_core.h>
+
+#include "suncore.h"
+#include "sunsab.h"
+
+struct uart_sunsab_port {
+ struct uart_port port; /* Generic UART port */
+ union sab82532_async_regs *regs; /* Chip registers */
+ unsigned long irqflags; /* IRQ state flags */
+ int xmit_fifo_size; /* TX fifo size */
+ int recv_fifo_size; /* RX fifo size */
+ int dsr; /* Current DSR state */
+ unsigned int cec_timeout; /* Chip poll timeout... */
+ unsigned int tec_timeout; /* likewise */
+ unsigned char interrupt_mask0;/* ISR0 masking */
+ unsigned char interrupt_mask1;/* ISR1 masking */
+ unsigned char pvr_dtr_bit; /* Which PVR bit is DTR */
+ unsigned char pvr_dsr_bit; /* Which PVR bit is DSR */
+ int type; /* SAB82532 version */
+ int sab_line; /* Internal numbering */
+ unsigned int irq; /* Device interrupt */
+};
/*
* This assumes you have a 29.4912 MHz clock for your UART.
*/
-#define BASE_BAUD ( 29491200 / 16 )
-
-static struct sab82532 *sab82532_chain = 0;
-static struct tty_struct *sab82532_table[NR_PORTS];
-static struct termios *sab82532_termios[NR_PORTS];
-static struct termios *sab82532_termios_locked[NR_PORTS];
-
-#ifdef CONFIG_SERIAL_CONSOLE
-extern int serial_console;
-static struct console sab82532_console;
-static int sab82532_console_init(void);
-static void batten_down_hatches(struct sab82532 *info);
-#endif
-
-#ifndef MIN
-#define MIN(a,b) ((a) < (b) ? (a) : (b))
-#endif
+#define SAB_BASE_BAUD ( 29491200 / 16 )
static char *sab82532_version[16] = {
"V1.0", "V2.0", "V3.2", "V(0x03)",
"V(0x08)", "V(0x09)", "V(0x0a)", "V(0x0b)",
"V(0x0c)", "V(0x0d)", "V(0x0e)", "V(0x0f)"
};
-static char serial_version[16];
-
-/*
- * tmp_buf is used as a temporary buffer by sab82532_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 = 0;
-static DECLARE_MUTEX(tmp_buf_sem);
-
-static inline int serial_paranoia_check(struct sab82532 *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 sab82532 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;
-}
-
-/*
- * This is used to figure out the divisor speeds.
- *
- * The formula is: Baud = BASE_BAUD / ((N + 1) * (1 << M)),
- *
- * with 0 <= N < 64 and 0 <= M < 16
- *
- * 12-Oct-2001 - Replaced table driven approach with code written by
- * Theodore Ts'o <tytso@alum.mit.edu> which exactly replicates the
- * table. (Modulo bugs for the 307200 and 61440 baud rates, which
- * were clearly incorrectly calculated in the original table. This is
- * why tables filled with magic constants are evil.)
- */
-
-static void calc_ebrg(int baud, int *n_ret, int *m_ret)
-{
- int n, m;
-
- if (baud == 0) {
- *n_ret = 0;
- *m_ret = 0;
- return;
- }
-
- /*
- * We scale numbers by 10 so that we get better accuracy
- * without having to use floating point. Here we increment m
- * until n is within the valid range.
- */
- n = (BASE_BAUD*10) / baud;
- m = 0;
- while (n >= 640) {
- n = n / 2;
- m++;
- }
- n = (n+5) / 10;
- /*
- * We try very hard to avoid speeds with M == 0 since they may
- * not work correctly for XTAL frequences above 10 MHz.
- */
- if ((m == 0) && ((n & 1) == 0)) {
- n = n / 2;
- m++;
- }
- *n_ret = n - 1;
- *m_ret = m;
-}
#define SAB82532_MAX_TEC_TIMEOUT 200000 /* 1 character time (at 50 baud) */
#define SAB82532_MAX_CEC_TIMEOUT 50000 /* 2.5 TX CLKs (at 50 baud) */
-static __inline__ void sab82532_tec_wait(struct sab82532 *info)
+static __inline__ void sunsab_tec_wait(struct uart_sunsab_port *up)
{
- int timeout = info->tec_timeout;
+ int timeout = up->tec_timeout;
- while ((readb(&info->regs->r.star) & SAB82532_STAR_TEC) && --timeout)
+ while ((readb(&up->regs->r.star) & SAB82532_STAR_TEC) && --timeout)
udelay(1);
}
-static __inline__ void sab82532_cec_wait(struct sab82532 *info)
+static __inline__ void sunsab_cec_wait(struct uart_sunsab_port *up)
{
- int timeout = info->cec_timeout;
+ int timeout = up->cec_timeout;
- while ((readb(&info->regs->r.star) & SAB82532_STAR_CEC) && --timeout)
+ while ((readb(&up->regs->r.star) & SAB82532_STAR_CEC) && --timeout)
udelay(1);
}
-static __inline__ void sab82532_start_tx(struct sab82532 *info)
-{
- unsigned long flags;
- int i;
-
- save_flags(flags); cli();
-
- if (info->xmit.head == info->xmit.tail)
- goto out;
-
- if (!test_bit(SAB82532_XPR, &info->irqflags))
- goto out;
-
- info->interrupt_mask1 &= ~(SAB82532_IMR1_ALLS);
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- clear_bit(SAB82532_ALLS, &info->irqflags);
-
- clear_bit(SAB82532_XPR, &info->irqflags);
- for (i = 0; i < info->xmit_fifo_size; i++) {
- writeb(info->xmit.buf[info->xmit.tail],
- &info->regs->w.xfifo[i]);
- info->xmit.tail = (info->xmit.tail + 1) & (SERIAL_XMIT_SIZE-1);
- info->icount.tx++;
- if (info->xmit.head == info->xmit.tail)
- break;
- }
-
- /* Issue a Transmit Frame command. */
- sab82532_cec_wait(info);
- writeb(SAB82532_CMDR_XF, &info->regs->w.cmdr);
-
-out:
- restore_flags(flags);
-}
-
-
-/*
- * ------------------------------------------------------------
- * sab82532_stop() and sab82532_start()
- *
- * This routines are called before setting or resetting tty->stopped.
- * They enable or disable transmitter interrupts, as necessary.
- * ------------------------------------------------------------
- */
-static void sab82532_stop(struct tty_struct *tty)
-{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "sab82532_stop"))
- return;
-
- save_flags(flags); cli();
- info->interrupt_mask1 |= SAB82532_IMR1_XPR;
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- restore_flags(flags);
-}
-
-static void sab82532_start(struct tty_struct *tty)
-{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "sab82532_start"))
- return;
-
- save_flags(flags); cli();
- info->interrupt_mask1 &= ~(SAB82532_IMR1_XPR);
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- sab82532_start_tx(info);
- restore_flags(flags);
-}
-
-/*
- * ----------------------------------------------------------------------
- *
- * Here starts the interrupt handling routines. All of the following
- * subroutines are declared as inline and are folded into
- * sab82532_interrupt(). They were separated out for readability's sake.
- *
- * Note: sab82532_interrupt() is a "fast" interrupt, which means that it
- * runs with interrupts turned off. People who may want to modify
- * sab82532_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 void sab82532_sched_event(struct sab82532 *info, int event)
-{
- info->event |= 1 << event;
- queue_task(&info->tqueue, &tq_serial);
- mark_bh(SERIAL_BH);
-}
-
-static void receive_chars(struct sab82532 *info,
- union sab82532_irq_status *stat)
+static void receive_chars(struct uart_sunsab_port *up,
+ union sab82532_irq_status *stat,
+ struct pt_regs *regs)
{
- struct tty_struct *tty = info->tty;
+ struct tty_struct *tty = up->port.info->tty;
unsigned char buf[32];
- unsigned char status;
+ int saw_console_brk = 0;
int free_fifo = 0;
- int i, count = 0;
+ int count = 0;
+ int i;
/* Read number of BYTES (Character + Status) available. */
if (stat->sreg.isr0 & SAB82532_ISR0_RPF) {
- count = info->recv_fifo_size;
+ count = up->recv_fifo_size;
free_fifo++;
}
if (stat->sreg.isr0 & SAB82532_ISR0_TCD) {
- count = readb(&info->regs->r.rbcl) & (info->recv_fifo_size - 1);
+ count = readb(&up->regs->r.rbcl) & (up->recv_fifo_size - 1);
free_fifo++;
}
/* Issue a FIFO read command in case we where idle. */
if (stat->sreg.isr0 & SAB82532_ISR0_TIME) {
- sab82532_cec_wait(info);
- writeb(SAB82532_CMDR_RFRD, &info->regs->w.cmdr);
+ sunsab_cec_wait(up);
+ writeb(SAB82532_CMDR_RFRD, &up->regs->w.cmdr);
return;
}
- if (stat->sreg.isr0 & SAB82532_ISR0_RFO) {
-#ifdef SERIAL_DEBUG_OVERFLOW
- printk("sab82532: receive_chars: RFO");
-#endif
+ if (stat->sreg.isr0 & SAB82532_ISR0_RFO)
free_fifo++;
- }
/* Read the FIFO. */
for (i = 0; i < count; i++)
- buf[i] = readb(&info->regs->r.rfifo[i]);
+ buf[i] = readb(&up->regs->r.rfifo[i]);
/* Issue Receive Message Complete command. */
if (free_fifo) {
- sab82532_cec_wait(info);
- writeb(SAB82532_CMDR_RMC, &info->regs->w.cmdr);
+ sunsab_cec_wait(up);
+ writeb(SAB82532_CMDR_RMC, &up->regs->w.cmdr);
}
- if (!tty)
- return;
+ for (i = 0; i < count; i++) {
+ unsigned char ch = buf[i];
- for (i = 0; i < count; ) {
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
-#ifdef SERIAL_DEBUG_OVERFLOW
- printk("sab82532: receive_chars: tty overrun\n");
-#endif
- info->icount.buf_overrun++;
- break;
+ 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
}
- tty->flip.count++;
- *tty->flip.char_buf_ptr++ = buf[i++];
- status = buf[i++];
- info->icount.rx++;
+ *tty->flip.char_buf_ptr = ch;
+ *tty->flip.flag_buf_ptr = TTY_NORMAL;
+ up->port.icount.rx++;
+
+ if (unlikely(stat->sreg.isr0 & (SAB82532_ISR0_PERR |
+ SAB82532_ISR0_FERR |
+ SAB82532_ISR0_RFO)) ||
+ unlikely(stat->sreg.isr1 & SAB82532_ISR1_BRK)) {
+ /*
+ * For statistics only
+ */
+ if (stat->sreg.isr1 & SAB82532_ISR1_BRK) {
+ stat->sreg.isr0 &= ~(SAB82532_ISR0_PERR |
+ SAB82532_ISR0_FERR);
+ up->port.icount.brk++;
+ if (up->port.line == up->port.cons->index)
+ saw_console_brk = 1;
+ /*
+ * 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))
+ continue;
+ } else if (stat->sreg.isr0 & SAB82532_ISR0_PERR)
+ up->port.icount.parity++;
+ else if (stat->sreg.isr0 & SAB82532_ISR0_FERR)
+ up->port.icount.frame++;
+ if (stat->sreg.isr0 & SAB82532_ISR0_RFO)
+ up->port.icount.overrun++;
+
+ /*
+ * Mask off conditions which should be ingored.
+ */
+ stat->sreg.isr0 &= (up->port.read_status_mask & 0xff);
+ stat->sreg.isr1 &= ((up->port.read_status_mask >> 8) & 0xff);
+
+ if (stat->sreg.isr1 & SAB82532_ISR1_BRK) {
+ *tty->flip.flag_buf_ptr = TTY_BREAK;
+ } else if (stat->sreg.isr0 & SAB82532_ISR0_PERR)
+ *tty->flip.flag_buf_ptr = TTY_PARITY;
+ else if (stat->sreg.isr0 & SAB82532_ISR0_FERR)
+ *tty->flip.flag_buf_ptr = TTY_FRAME;
+ }
-#ifdef SERIAL_DEBUG_INTR
- printk("DR%02x:%02x...", (unsigned char)*(tty->flip.char_buf_ptr - 1), status);
-#endif
+ if (uart_handle_sysrq_char(&up->port, ch, regs))
+ continue;
- if (status & SAB82532_RSTAT_PE) {
- *tty->flip.flag_buf_ptr++ = TTY_PARITY;
- info->icount.parity++;
- } else if (status & SAB82532_RSTAT_FE) {
- *tty->flip.flag_buf_ptr++ = TTY_FRAME;
- info->icount.frame++;
+ if ((stat->sreg.isr0 & (up->port.ignore_status_mask & 0xff)) == 0 &&
+ (stat->sreg.isr1 & ((up->port.ignore_status_mask >> 8) & 0xff)) == 0){
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ tty->flip.count++;
+ }
+ if ((stat->sreg.isr0 & SAB82532_ISR0_RFO) &&
+ 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++;
}
- else
- *tty->flip.flag_buf_ptr++ = TTY_NORMAL;
}
- queue_task(&tty->flip.tqueue, &tq_timer);
+ tty_flip_buffer_push(tty);
+
+ if (saw_console_brk)
+ sun_do_break();
}
-static void transmit_chars(struct sab82532 *info,
+static void sunsab_stop_tx(struct uart_port *, unsigned int);
+
+static void transmit_chars(struct uart_sunsab_port *up,
union sab82532_irq_status *stat)
{
+ struct circ_buf *xmit = &up->port.info->xmit;
int i;
if (stat->sreg.isr1 & SAB82532_ISR1_ALLS) {
- info->interrupt_mask1 |= SAB82532_IMR1_ALLS;
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- set_bit(SAB82532_ALLS, &info->irqflags);
+ up->interrupt_mask1 |= SAB82532_IMR1_ALLS;
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
+ set_bit(SAB82532_ALLS, &up->irqflags);
}
if (!(stat->sreg.isr1 & SAB82532_ISR1_XPR))
return;
- if (!(readb(&info->regs->r.star) & SAB82532_STAR_XFW)) {
-#ifdef SERIAL_DEBUG_FIFO
- printk("%s: XPR, but no XFW (?)\n", __FUNCTION__);
-#endif
+ if (!(readb(&up->regs->r.star) & SAB82532_STAR_XFW))
return;
- }
-
- set_bit(SAB82532_XPR, &info->irqflags);
- if (!info->tty) {
- info->interrupt_mask1 |= SAB82532_IMR1_XPR;
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- return;
- }
+ set_bit(SAB82532_XPR, &up->irqflags);
- if ((info->xmit.head == info->xmit.tail) ||
- info->tty->stopped || info->tty->hw_stopped) {
- info->interrupt_mask1 |= SAB82532_IMR1_XPR;
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
+ if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
+ up->interrupt_mask1 |= SAB82532_IMR1_XPR;
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
return;
}
- info->interrupt_mask1 &= ~(SAB82532_IMR1_ALLS);
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- clear_bit(SAB82532_ALLS, &info->irqflags);
+ up->interrupt_mask1 &= ~(SAB82532_IMR1_ALLS);
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
+ clear_bit(SAB82532_ALLS, &up->irqflags);
/* Stuff 32 bytes into Transmit FIFO. */
- clear_bit(SAB82532_XPR, &info->irqflags);
- for (i = 0; i < info->xmit_fifo_size; i++) {
- writeb(info->xmit.buf[info->xmit.tail],
- &info->regs->w.xfifo[i]);
- info->xmit.tail = (info->xmit.tail + 1) & (SERIAL_XMIT_SIZE-1);
- info->icount.tx++;
- if (info->xmit.head == info->xmit.tail)
+ clear_bit(SAB82532_XPR, &up->irqflags);
+ for (i = 0; i < up->xmit_fifo_size; i++) {
+ writeb(xmit->buf[xmit->tail],
+ &up->regs->w.xfifo[i]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ up->port.icount.tx++;
+ if (uart_circ_empty(xmit))
break;
}
/* Issue a Transmit Frame command. */
- sab82532_cec_wait(info);
- writeb(SAB82532_CMDR_XF, &info->regs->w.cmdr);
+ sunsab_cec_wait(up);
+ writeb(SAB82532_CMDR_XF, &up->regs->w.cmdr);
- if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) < WAKEUP_CHARS)
- sab82532_sched_event(info, RS_EVENT_WRITE_WAKEUP);
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_event(&up->port, EVT_WRITE_WAKEUP);
-#ifdef SERIAL_DEBUG_INTR
- printk("THRE...");
-#endif
+ if (uart_circ_empty(xmit))
+ sunsab_stop_tx(&up->port, 0);
}
-static void check_status(struct sab82532 *info,
+static void check_status(struct uart_sunsab_port *up,
union sab82532_irq_status *stat)
{
- struct tty_struct *tty = info->tty;
- int modem_change = 0;
-
- if (stat->sreg.isr1 & SAB82532_ISR1_BRK) {
-#ifdef CONFIG_SERIAL_CONSOLE
- if (info->is_console) {
- sun_do_break(info);
- return;
- }
-#endif
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
- info->icount.buf_overrun++;
- goto check_modem;
- }
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_PARITY;
- *tty->flip.char_buf_ptr++ = 0;
- info->icount.brk++;
- }
+ if (stat->sreg.isr0 & SAB82532_ISR0_CDSC)
+ uart_handle_dcd_change(&up->port,
+ !(readb(&up->regs->r.vstr) & SAB82532_VSTR_CD));
- if (!tty)
- return;
+ if (stat->sreg.isr1 & SAB82532_ISR1_CSC)
+ uart_handle_cts_change(&up->port,
+ (readb(&up->regs->r.star) & SAB82532_STAR_CTS));
- if (stat->sreg.isr0 & SAB82532_ISR0_RFO) {
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
- info->icount.buf_overrun++;
- goto check_modem;
- }
- tty->flip.count++;
- *tty->flip.flag_buf_ptr++ = TTY_PARITY;
- *tty->flip.char_buf_ptr++ = 0;
- info->icount.overrun++;
+ if ((readb(&up->regs->r.pvr) & up->pvr_dsr_bit) ^ up->dsr) {
+ up->dsr = (readb(&up->regs->r.pvr) & up->pvr_dsr_bit) ? 0 : 1;
+ up->port.icount.dsr++;
}
-check_modem:
- if (stat->sreg.isr0 & SAB82532_ISR0_CDSC) {
- info->dcd = (readb(&info->regs->r.vstr) & SAB82532_VSTR_CD) ? 0 : 1;
- info->icount.dcd++;
- modem_change++;
-#ifdef SERIAL_DEBUG_MODEM
- printk("DCD change: %d\n", info->icount.dcd);
-#endif
- }
- if (stat->sreg.isr1 & SAB82532_ISR1_CSC) {
- info->cts = readb(&info->regs->r.star) & SAB82532_STAR_CTS;
- info->icount.cts++;
- modem_change++;
-#ifdef SERIAL_DEBUG_MODEM
- printk("CTS change: %d, CTS %s\n", info->icount.cts, info->cts ? "on" : "off");
-#endif
- }
- if ((readb(&info->regs->r.pvr) & info->pvr_dsr_bit) ^ info->dsr) {
- info->dsr = (readb(&info->regs->r.pvr) & info->pvr_dsr_bit) ? 0 : 1;
- info->icount.dsr++;
- modem_change++;
-#ifdef SERIAL_DEBUG_MODEM
- printk("DSR change: %d\n", info->icount.dsr);
-#endif
- }
- if (modem_change)
- wake_up_interruptible(&info->delta_msr_wait);
+ wake_up_interruptible(&up->port.info->delta_msr_wait);
+}
- if ((info->flags & ASYNC_CHECK_CD) &&
- (stat->sreg.isr0 & SAB82532_ISR0_CDSC)) {
+static void sunsab_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uart_sunsab_port *up = dev_id;
+ union sab82532_irq_status status;
+ unsigned long flags;
-#if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR))
- printk("ttys%d CD now %s...", info->line,
- (info->dcd) ? "on" : "off");
-#endif
+ spin_lock_irqsave(&up->port.lock, flags);
- if (info->dcd)
- wake_up_interruptible(&info->open_wait);
- else if (!((info->flags & ASYNC_CALLOUT_ACTIVE) &&
- (info->flags & ASYNC_CALLOUT_NOHUP))) {
+ status.stat = 0;
+ if (readb(&up->regs->r.gis) & SAB82532_GIS_ISA0)
+ status.sreg.isr0 = readb(&up->regs->r.isr0);
+ if (readb(&up->regs->r.gis) & SAB82532_GIS_ISA1)
+ status.sreg.isr1 = readb(&up->regs->r.isr1);
-#ifdef SERIAL_DEBUG_OPEN
- printk("scheduling hangup...");
-#endif
- MOD_INC_USE_COUNT;
- if (schedule_task(&info->tqueue_hangup) == 0)
- MOD_DEC_USE_COUNT;
- }
+ if (status.stat) {
+ if (status.sreg.isr0 & (SAB82532_ISR0_TCD | SAB82532_ISR0_TIME |
+ SAB82532_ISR0_RFO | SAB82532_ISR0_RPF))
+ receive_chars(up, &status, regs);
+ if ((status.sreg.isr0 & SAB82532_ISR0_CDSC) ||
+ (status.sreg.isr1 & SAB82532_ISR1_CSC))
+ check_status(up, &status);
+ if (status.sreg.isr1 & (SAB82532_ISR1_ALLS | SAB82532_ISR1_XPR))
+ transmit_chars(up, &status);
}
- if (info->flags & ASYNC_CTS_FLOW) {
- if (info->tty->hw_stopped) {
- if (info->cts) {
+ spin_unlock(&up->port.lock);
-#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW))
- printk("CTS tx start...");
-#endif
- info->tty->hw_stopped = 0;
- sab82532_sched_event(info,
- RS_EVENT_WRITE_WAKEUP);
- info->interrupt_mask1 &= ~(SAB82532_IMR1_XPR);
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- sab82532_start_tx(info);
- }
- } else {
- if (!(info->cts)) {
+ up++;
-#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW))
- printk("CTS tx stop...");
-#endif
- info->tty->hw_stopped = 1;
- }
- }
+ spin_lock(&up->port.lock);
+
+ status.stat = 0;
+ if (readb(&up->regs->r.gis) & SAB82532_GIS_ISB0)
+ status.sreg.isr0 = readb(&up->regs->r.isr0);
+ if (readb(&up->regs->r.gis) & SAB82532_GIS_ISB1)
+ status.sreg.isr1 = readb(&up->regs->r.isr1);
+
+ if (status.stat) {
+ if (status.sreg.isr0 & (SAB82532_ISR0_TCD | SAB82532_ISR0_TIME |
+ SAB82532_ISR0_RFO | SAB82532_ISR0_RPF))
+ receive_chars(up, &status, regs);
+ if ((status.sreg.isr0 & SAB82532_ISR0_CDSC) ||
+ (status.sreg.isr1 & (SAB82532_ISR1_BRK | SAB82532_ISR1_CSC)))
+ check_status(up, &status);
+ if (status.sreg.isr1 & (SAB82532_ISR1_ALLS | SAB82532_ISR1_XPR))
+ transmit_chars(up, &status);
+ }
+
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+/* port->lock is not held. */
+static unsigned int sunsab_tx_empty(struct uart_port *port)
+{
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
+ int ret;
+
+ /* Do not need a lock for a state test like this. */
+ if (test_bit(SAB82532_ALLS, &up->irqflags))
+ ret = TIOCSER_TEMT;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+/* port->lock held by caller. */
+static void sunsab_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
+
+ if (mctrl & TIOCM_RTS) {
+ writeb(readb(&up->regs->rw.mode) & ~SAB82532_MODE_FRTS,
+ &up->regs->rw.mode);
+ writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
+ &up->regs->rw.mode);
+ } else {
+ writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FRTS,
+ &up->regs->rw.mode);
+ writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
+ &up->regs->rw.mode);
+ }
+ if (mctrl & TIOCM_DTR) {
+ writeb(readb(&up->regs->rw.pvr) & ~(up->pvr_dtr_bit), &up->regs->rw.pvr);
+ } else {
+ writeb(readb(&up->regs->rw.pvr) | up->pvr_dtr_bit, &up->regs->rw.pvr);
}
}
-/*
- * This is the serial driver's generic interrupt routine
- */
-static void sab82532_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+/* port->lock is not held. */
+static unsigned int sunsab_get_mctrl(struct uart_port *port)
{
- struct sab82532 *info = dev_id;
- union sab82532_irq_status status;
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
+ unsigned long flags;
+ unsigned char val;
+ unsigned int result;
-#ifdef SERIAL_DEBUG_INTR
- printk("sab82532_interrupt(%d)...", irq);
-#endif
+ result = 0;
- status.stat = 0;
- if (readb(&info->regs->r.gis) & SAB82532_GIS_ISA0)
- status.sreg.isr0 = readb(&info->regs->r.isr0);
- if (readb(&info->regs->r.gis) & SAB82532_GIS_ISA1)
- status.sreg.isr1 = readb(&info->regs->r.isr1);
-
-#ifdef SERIAL_DEBUG_INTR
- printk("%d<%02x.%02x>", info->line,
- status.sreg.isr0, status.sreg.isr1);
-#endif
+ spin_lock_irqsave(&up->port.lock, flags);
- if (!status.stat)
- goto next;
+ val = readb(&up->regs->r.pvr);
+ result |= (val & up->pvr_dsr_bit) ? 0 : TIOCM_DSR;
- if (status.sreg.isr0 & (SAB82532_ISR0_TCD | SAB82532_ISR0_TIME |
- SAB82532_ISR0_RFO | SAB82532_ISR0_RPF))
- receive_chars(info, &status);
- if ((status.sreg.isr0 & SAB82532_ISR0_CDSC) ||
- (status.sreg.isr1 & (SAB82532_ISR1_BRK | SAB82532_ISR1_CSC)))
- check_status(info, &status);
- if (status.sreg.isr1 & (SAB82532_ISR1_ALLS | SAB82532_ISR1_XPR))
- transmit_chars(info, &status);
+ val = readb(&up->regs->r.vstr);
+ result |= (val & SAB82532_VSTR_CD) ? 0 : TIOCM_CAR;
-next:
- info = info->next;
- status.stat = 0;
- if (readb(&info->regs->r.gis) & SAB82532_GIS_ISB0)
- status.sreg.isr0 = readb(&info->regs->r.isr0);
- if (readb(&info->regs->r.gis) & SAB82532_GIS_ISB1)
- status.sreg.isr1 = readb(&info->regs->r.isr1);
-
-#ifdef SERIAL_DEBUG_INTR
- printk("%d<%02x.%02x>", info->line,
- status.sreg.isr0, status.sreg.isr1);
-#endif
+ val = readb(&up->regs->r.star);
+ result |= (val & SAB82532_STAR_CTS) ? TIOCM_CTS : 0;
- if (!status.stat)
- goto done;
-
- if (status.sreg.isr0 & (SAB82532_ISR0_TCD | SAB82532_ISR0_TIME |
- SAB82532_ISR0_RFO | SAB82532_ISR0_RPF))
- receive_chars(info, &status);
- if ((status.sreg.isr0 & SAB82532_ISR0_CDSC) ||
- (status.sreg.isr1 & (SAB82532_ISR1_BRK | SAB82532_ISR1_CSC)))
- check_status(info, &status);
- if (status.sreg.isr1 & (SAB82532_ISR1_ALLS | SAB82532_ISR1_XPR))
- transmit_chars(info, &status);
-
-done:
- ;
-#ifdef SERIAL_DEBUG_INTR
- printk("end.\n");
-#endif
-}
+ spin_unlock_irqrestore(&up->port.lock, flags);
-/*
- * -------------------------------------------------------------------
- * Here ends the serial interrupt routines.
- * -------------------------------------------------------------------
- */
+ return result;
+}
-/*
- * 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
- * sab82532_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 sab82532_sched_event(), and they get done here.
- */
-static void do_serial_bh(void)
+/* port->lock held by caller. */
+static void sunsab_stop_tx(struct uart_port *port, unsigned int tty_stop)
{
- run_task_queue(&tq_serial);
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
+
+ up->interrupt_mask1 |= SAB82532_IMR1_XPR;
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
}
-static void do_softint(void *private_)
+/* port->lock held by caller. */
+static void sunsab_start_tx(struct uart_port *port, unsigned int tty_start)
{
- struct sab82532 *info = (struct sab82532 *)private_;
- struct tty_struct *tty;
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
+ struct circ_buf *xmit = &up->port.info->xmit;
+ int i;
- tty = info->tty;
- if (!tty)
+ if (!test_bit(SAB82532_XPR, &up->irqflags))
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);
+ up->interrupt_mask1 &= ~SAB82532_IMR1_XPR;
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
+ clear_bit(SAB82532_ALLS, &up->irqflags);
+ clear_bit(SAB82532_XPR, &up->irqflags);
+
+ for (i = 0; i < up->xmit_fifo_size; i++) {
+ writeb(xmit->buf[xmit->tail],
+ &up->regs->w.xfifo[i]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ up->port.icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
}
+
+ /* Issue a Transmit Frame command. */
+ sunsab_cec_wait(up);
+ writeb(SAB82532_CMDR_XF, &up->regs->w.cmdr);
}
-/*
- * This routine is called from the scheduler tqueue when the interrupt
- * routine has signalled that a hangup has occurred. The path of
- * hangup processing is:
- *
- * serial interrupt routine -> (scheduler tqueue) ->
- * do_serial_hangup() -> tty->hangup() -> sab82532_hangup()
- *
- */
-static void do_serial_hangup(void *private_)
+/* port->lock is not held. */
+static void sunsab_send_xchar(struct uart_port *port, char ch)
+{
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
+ unsigned long flags;
+
+ spin_lock_irqsave(&up->port.lock, flags);
+
+ sunsab_tec_wait(up);
+ writeb(ch, &up->regs->w.tic);
+
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+/* port->lock held by caller. */
+static void sunsab_stop_rx(struct uart_port *port)
+{
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
+
+ up->interrupt_mask0 |= SAB82532_ISR0_TCD;
+ writeb(up->interrupt_mask1, &up->regs->w.imr0);
+}
+
+/* port->lock held by caller. */
+static void sunsab_enable_ms(struct uart_port *port)
{
- struct sab82532 *info = (struct sab82532 *) private_;
- struct tty_struct *tty;
+ /* For now we always receive these interrupts. */
+}
+
+/* port->lock is not held. */
+static void sunsab_break_ctl(struct uart_port *port, int break_state)
+{
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
+ unsigned long flags;
+ unsigned char val;
- tty = info->tty;
- if (tty)
- tty_hangup(tty);
- MOD_DEC_USE_COUNT;
+ spin_lock_irqsave(&up->port.lock, flags);
+
+ val = readb(&up->regs->rw.dafo);
+ if (break_state)
+ val |= SAB82532_DAFO_XBRK;
+ else
+ val &= ~SAB82532_DAFO_XBRK;
+ writeb(val, &up->regs->rw.dafo);
+
+ spin_unlock_irqrestore(&up->port.lock, flags);
}
-static void
-sab82532_init_line(struct sab82532 *info)
+/* port->lock is not held. */
+static int sunsab_startup(struct uart_port *port)
{
- unsigned char stat, tmp;
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
+ unsigned long flags;
+ unsigned char tmp;
+
+ spin_lock_irqsave(&up->port.lock, flags);
/*
* Wait for any commands or immediate characters
*/
- sab82532_cec_wait(info);
- sab82532_tec_wait(info);
+ sunsab_cec_wait(up);
+ sunsab_tec_wait(up);
/*
* Clear the FIFO buffers.
*/
- writeb(SAB82532_CMDR_RRES, &info->regs->w.cmdr);
- sab82532_cec_wait(info);
- writeb(SAB82532_CMDR_XRES, &info->regs->w.cmdr);
+ writeb(SAB82532_CMDR_RRES, &up->regs->w.cmdr);
+ sunsab_cec_wait(up);
+ writeb(SAB82532_CMDR_XRES, &up->regs->w.cmdr);
/*
* Clear the interrupt registers.
*/
- stat = readb(&info->regs->r.isr0);
- stat = readb(&info->regs->r.isr1);
+ (void) readb(&up->regs->r.isr0);
+ (void) readb(&up->regs->r.isr1);
/*
* Now, initialize the UART
*/
- writeb(0, &info->regs->w.ccr0); /* power-down */
+ writeb(0, &up->regs->w.ccr0); /* power-down */
writeb(SAB82532_CCR0_MCE | SAB82532_CCR0_SC_NRZ |
- SAB82532_CCR0_SM_ASYNC, &info->regs->w.ccr0);
- writeb(SAB82532_CCR1_ODS | SAB82532_CCR1_BCR | 7, &info->regs->w.ccr1);
+ SAB82532_CCR0_SM_ASYNC, &up->regs->w.ccr0);
+ writeb(SAB82532_CCR1_ODS | SAB82532_CCR1_BCR | 7, &up->regs->w.ccr1);
writeb(SAB82532_CCR2_BDF | SAB82532_CCR2_SSEL |
- SAB82532_CCR2_TOE, &info->regs->w.ccr2);
- writeb(0, &info->regs->w.ccr3);
- writeb(SAB82532_CCR4_MCK4 | SAB82532_CCR4_EBRG, &info->regs->w.ccr4);
+ SAB82532_CCR2_TOE, &up->regs->w.ccr2);
+ writeb(0, &up->regs->w.ccr3);
+ writeb(SAB82532_CCR4_MCK4 | SAB82532_CCR4_EBRG, &up->regs->w.ccr4);
writeb(SAB82532_MODE_RTS | SAB82532_MODE_FCTS |
- SAB82532_MODE_RAC, &info->regs->w.mode);
- writeb(SAB82532_RFC_DPS | SAB82532_RFC_RFDF, &info->regs->w.rfc);
- switch (info->recv_fifo_size) {
+ SAB82532_MODE_RAC, &up->regs->w.mode);
+ writeb(SAB82532_RFC_DPS | SAB82532_RFC_RFDF, &up->regs->w.rfc);
+
+ switch (up->recv_fifo_size) {
case 1:
- tmp = readb(&info->regs->w.rfc);
+ tmp = readb(&up->regs->w.rfc);
tmp |= SAB82532_RFC_RFTH_1;
- writeb(tmp, &info->regs->w.rfc);
+ writeb(tmp, &up->regs->w.rfc);
break;
case 4:
- tmp = readb(&info->regs->w.rfc);
+ tmp = readb(&up->regs->w.rfc);
tmp |= SAB82532_RFC_RFTH_4;
- writeb(tmp, &info->regs->w.rfc);
+ writeb(tmp, &up->regs->w.rfc);
break;
case 16:
- tmp = readb(&info->regs->w.rfc);
+ tmp = readb(&up->regs->w.rfc);
tmp |= SAB82532_RFC_RFTH_16;
- writeb(tmp, &info->regs->w.rfc);
+ writeb(tmp, &up->regs->w.rfc);
break;
default:
- info->recv_fifo_size = 32;
+ up->recv_fifo_size = 32;
/* fall through */
case 32:
- tmp = readb(&info->regs->w.rfc);
+ tmp = readb(&up->regs->w.rfc);
tmp |= SAB82532_RFC_RFTH_32;
- writeb(tmp, &info->regs->w.rfc);
+ writeb(tmp, &up->regs->w.rfc);
break;
- }
- tmp = readb(&info->regs->rw.ccr0);
+ };
+
+ tmp = readb(&up->regs->rw.ccr0);
tmp |= SAB82532_CCR0_PU; /* power-up */
- writeb(tmp, &info->regs->rw.ccr0);
+ writeb(tmp, &up->regs->rw.ccr0);
+
+ /*
+ * Finally, enable interrupts
+ */
+ up->interrupt_mask0 = (SAB82532_IMR0_PERR | SAB82532_IMR0_FERR |
+ SAB82532_IMR0_PLLA);
+ writeb(up->interrupt_mask0, &up->regs->w.imr0);
+ up->interrupt_mask1 = (SAB82532_IMR1_BRKT | SAB82532_IMR1_ALLS |
+ SAB82532_IMR1_XOFF | SAB82532_IMR1_TIN |
+ SAB82532_IMR1_CSC | SAB82532_IMR1_XON |
+ SAB82532_IMR1_XPR);
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
+ set_bit(SAB82532_ALLS, &up->irqflags);
+ set_bit(SAB82532_XPR, &up->irqflags);
+
+ spin_unlock_irqrestore(&up->port.lock, flags);
+
+ return 0;
}
-static int startup(struct sab82532 *info)
+/* port->lock is not held. */
+static void sunsab_shutdown(struct uart_port *port)
{
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
unsigned long flags;
- unsigned long page;
- int retval = 0;
+ unsigned char tmp;
- page = get_free_page(GFP_KERNEL);
- if (!page)
- return -ENOMEM;
+ spin_lock_irqsave(&up->port.lock, flags);
- save_flags(flags); cli();
+ /* Disable Interrupts */
+ up->interrupt_mask0 = 0xff;
+ writeb(up->interrupt_mask0, &up->regs->w.imr0);
+ up->interrupt_mask1 = 0xff;
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
- if (info->flags & ASYNC_INITIALIZED) {
- free_page(page);
- goto errout;
- }
+ /* Disable break condition */
+ tmp = readb(&up->regs->rw.dafo);
+ tmp &= ~SAB82532_DAFO_XBRK;
+ writeb(tmp, &up->regs->rw.dafo);
- if (!info->regs) {
- if (info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
- free_page(page);
- retval = -ENODEV;
- goto errout;
- }
- if (info->xmit.buf)
- free_page(page);
- else
- info->xmit.buf = (unsigned char *)page;
+ /* Disable Receiver */
+ tmp = readb(&up->regs->rw.mode);
+ tmp &= ~SAB82532_MODE_RAC;
+ writeb(tmp, &up->regs->rw.mode);
-#ifdef SERIAL_DEBUG_OPEN
- printk("starting up serial port %d...", info->line);
-#endif
+ /* Power Down */
+ tmp = readb(&up->regs->rw.ccr0);
+ tmp &= ~SAB82532_CCR0_PU;
+ writeb(tmp, &up->regs->rw.ccr0);
- /*
- * Initialize the Hardware
- */
- sab82532_init_line(info);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
- if (info->tty->termios->c_cflag & CBAUD) {
- u8 tmp;
+/*
+ * This is used to figure out the divisor speeds.
+ *
+ * The formula is: Baud = SAB_BASE_BAUD / ((N + 1) * (1 << M)),
+ *
+ * with 0 <= N < 64 and 0 <= M < 16
+ */
- tmp = readb(&info->regs->rw.mode);
- tmp &= ~(SAB82532_MODE_FRTS);
- tmp |= SAB82532_MODE_RTS;
- writeb(tmp, &info->regs->rw.mode);
+static void calc_ebrg(int baud, int *n_ret, int *m_ret)
+{
+ int n, m;
- tmp = readb(&info->regs->rw.pvr);
- tmp &= ~(info->pvr_dtr_bit);
- writeb(tmp, &info->regs->rw.pvr);
+ if (baud == 0) {
+ *n_ret = 0;
+ *m_ret = 0;
+ return;
}
-
+
/*
- * Finally, enable interrupts
- */
- info->interrupt_mask0 = SAB82532_IMR0_PERR | SAB82532_IMR0_FERR |
- SAB82532_IMR0_PLLA;
- writeb(info->interrupt_mask0, &info->regs->w.imr0);
- info->interrupt_mask1 = SAB82532_IMR1_BRKT | SAB82532_IMR1_ALLS |
- SAB82532_IMR1_XOFF | SAB82532_IMR1_TIN |
- SAB82532_IMR1_CSC | SAB82532_IMR1_XON |
- SAB82532_IMR1_XPR;
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- set_bit(SAB82532_ALLS, &info->irqflags);
-
- if (info->tty)
- clear_bit(TTY_IO_ERROR, &info->tty->flags);
- info->xmit.head = info->xmit.tail = 0;
-
- set_bit(SAB82532_XPR, &info->irqflags);
-
- /*
- * and set the speed of the serial port
+ * We scale numbers by 10 so that we get better accuracy
+ * without having to use floating point. Here we increment m
+ * until n is within the valid range.
*/
- change_speed(info);
-
- 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 sab82532 *info)
-{
- unsigned long flags;
- u8 tmp;
-
- if (!(info->flags & ASYNC_INITIALIZED))
- return;
-
-#ifdef SERIAL_DEBUG_OPEN
- printk("Shutting down serial port %d...", info->line);
-#endif
-
- save_flags(flags); cli(); /* Disable interrupts */
-
+ n = (SAB_BASE_BAUD * 10) / baud;
+ m = 0;
+ while (n >= 640) {
+ n = n / 2;
+ m++;
+ }
+ n = (n+5) / 10;
/*
- * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
- * here so the queue might never be waken up
+ * We try very hard to avoid speeds with M == 0 since they may
+ * not work correctly for XTAL frequences above 10 MHz.
*/
- wake_up_interruptible(&info->delta_msr_wait);
-
- if (info->xmit.buf) {
- free_page((unsigned long)info->xmit.buf);
- info->xmit.buf = 0;
- }
-
- if (info->is_console) {
- info->interrupt_mask0 = SAB82532_IMR0_PERR | SAB82532_IMR0_FERR |
- SAB82532_IMR0_PLLA | SAB82532_IMR0_CDSC;
- writeb(info->interrupt_mask0, &info->regs->w.imr0);
- info->interrupt_mask1 = SAB82532_IMR1_BRKT | SAB82532_IMR1_ALLS |
- SAB82532_IMR1_XOFF | SAB82532_IMR1_TIN |
- SAB82532_IMR1_CSC | SAB82532_IMR1_XON |
- SAB82532_IMR1_XPR;
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- if (info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
- info->flags &= ~ASYNC_INITIALIZED;
- restore_flags(flags);
- return;
- }
-
- /* Disable Interrupts */
- info->interrupt_mask0 = 0xff;
- writeb(info->interrupt_mask0, &info->regs->w.imr0);
- info->interrupt_mask1 = 0xff;
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
-
- if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
- tmp = readb(&info->regs->r.mode);
- tmp |= (SAB82532_MODE_FRTS | SAB82532_MODE_RTS);
- writeb(tmp, &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.pvr) | info->pvr_dtr_bit,
- &info->regs->rw.pvr);
+ if ((m == 0) && ((n & 1) == 0)) {
+ n = n / 2;
+ m++;
}
-
- /* Disable break condition */
- tmp = readb(&info->regs->rw.dafo);
- tmp &= ~(SAB82532_DAFO_XBRK);
- writeb(tmp, &info->regs->rw.dafo);
-
- /* Disable Receiver */
- tmp = readb(&info->regs->rw.mode);
- tmp &= ~(SAB82532_MODE_RAC);
- writeb(tmp, &info->regs->rw.mode);
-
- /* Power Down */
- tmp = readb(&info->regs->rw.ccr0);
- tmp &= ~(SAB82532_CCR0_PU);
- writeb(tmp, &info->regs->rw.ccr0);
-
- if (info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
-
- info->flags &= ~ASYNC_INITIALIZED;
- restore_flags(flags);
+ *n_ret = n - 1;
+ *m_ret = m;
}
-/*
- * 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 sab82532 *info)
+/* Internal routine, port->lock is held and local interrupts are disabled. */
+static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cflag,
+ unsigned int iflag, int baud)
{
- unsigned long flags;
- unsigned int ebrg;
- tcflag_t cflag;
- unsigned char dafo;
- int bits, n, m;
-
- if (!info->tty || !info->tty->termios)
- return;
- cflag = info->tty->termios->c_cflag;
+ unsigned int ebrg;
+ unsigned char dafo;
+ int bits, n, m;
/* Byte size and parity */
switch (cflag & CSIZE) {
}
if (cflag & PARODD) {
-#ifdef CMSPAR
- if (cflag & CMSPAR)
- dafo |= SAB82532_DAFO_PAR_MARK;
- else
-#endif
- dafo |= SAB82532_DAFO_PAR_ODD;
+ dafo |= SAB82532_DAFO_PAR_ODD;
} else {
-#ifdef CMSPAR
- if (cflag & CMSPAR)
- dafo |= SAB82532_DAFO_PAR_SPACE;
- else
-#endif
- dafo |= SAB82532_DAFO_PAR_EVEN;
+ dafo |= SAB82532_DAFO_PAR_EVEN;
}
- /* Determine EBRG values based on baud rate */
- info->baud = tty_get_baud_rate(info->tty);
- calc_ebrg(info->baud, &n, &m);
-
+ calc_ebrg(baud, &n, &m);
+
ebrg = n | (m << 6);
- if (info->baud) {
- info->timeout = (info->xmit_fifo_size * HZ * bits) / info->baud;
- info->tec_timeout = (10 * 1000000) / info->baud;
- info->cec_timeout = info->tec_timeout >> 2;
- } else {
- info->timeout = 0;
- info->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
- info->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
- }
- info->timeout += HZ / 50; /* Add .02 seconds of slop */
+ up->tec_timeout = (10 * 1000000) / baud;
+ up->cec_timeout = up->tec_timeout >> 2;
/* CTS flow control flags */
- if (cflag & CRTSCTS)
- info->flags |= ASYNC_CTS_FLOW;
- else
- info->flags &= ~(ASYNC_CTS_FLOW);
-
- if (cflag & CLOCAL)
- info->flags &= ~(ASYNC_CHECK_CD);
- else
- info->flags |= ASYNC_CHECK_CD;
- if (info->tty)
- info->tty->hw_stopped = 0;
-
- /*
- * Set up parity check flag
- * XXX: not implemented, yet.
+ /* We encode read_status_mask and ignore_status_mask like so:
+ *
+ * ---------------------
+ * | ... | ISR1 | ISR0 |
+ * ---------------------
+ * .. 15 8 7 0
*/
-#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+
+ up->port.read_status_mask = (SAB82532_ISR0_TCD | SAB82532_ISR0_TIME |
+ SAB82532_ISR0_RFO | SAB82532_ISR0_RPF |
+ SAB82532_ISR0_CDSC);
+ up->port.read_status_mask |= (SAB82532_ISR1_CSC |
+ SAB82532_ISR1_ALLS |
+ SAB82532_ISR1_XPR) << 8;
+ if (iflag & INPCK)
+ up->port.read_status_mask |= (SAB82532_ISR0_PERR |
+ SAB82532_ISR0_FERR);
+ if (iflag & (BRKINT | PARMRK))
+ up->port.read_status_mask |= (SAB82532_ISR1_BRK << 8);
/*
- * Characters to ignore
- * XXX: not implemented, yet.
+ * Characteres to ignore
*/
+ up->port.ignore_status_mask = 0;
+ if (iflag & IGNPAR)
+ up->port.ignore_status_mask |= (SAB82532_ISR0_PERR |
+ SAB82532_ISR0_FERR);
+ if (iflag & IGNBRK) {
+ up->port.ignore_status_mask |= (SAB82532_ISR1_BRK << 8);
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns too (for real raw support).
+ */
+ if (iflag & IGNPAR)
+ up->port.ignore_status_mask |= SAB82532_ISR0_RFO;
+ }
/*
- * !!! ignore all characters if CREAD is not set
- * XXX: not implemented, yet.
+ * ignore all characters if CREAD is not set
*/
if ((cflag & CREAD) == 0)
- info->ignore_status_mask |= SAB82532_ISR0_RPF |
- SAB82532_ISR0_TCD |
- SAB82532_ISR0_TIME;
-
- save_flags(flags); cli();
- sab82532_cec_wait(info);
- sab82532_tec_wait(info);
- writeb(dafo, &info->regs->w.dafo);
- writeb(ebrg & 0xff, &info->regs->w.bgr);
- writeb(readb(&info->regs->rw.ccr2) & ~(0xc0), &info->regs->rw.ccr2);
- writeb(readb(&info->regs->rw.ccr2) | ((ebrg >> 2) & 0xc0), &info->regs->rw.ccr2);
- if (info->flags & ASYNC_CTS_FLOW) {
- writeb(readb(&info->regs->rw.mode) & ~(SAB82532_MODE_RTS), &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_FRTS, &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) & ~(SAB82532_MODE_FCTS), &info->regs->rw.mode);
- info->interrupt_mask1 &= ~(SAB82532_IMR1_CSC);
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- } else {
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_RTS, &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) & ~(SAB82532_MODE_FRTS), &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_FCTS, &info->regs->rw.mode);
- info->interrupt_mask1 |= SAB82532_IMR1_CSC;
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- }
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_RAC, &info->regs->rw.mode);
- restore_flags(flags);
-}
-
-static void sab82532_put_char(struct tty_struct *tty, unsigned char ch)
-{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "sab82532_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)) {
- 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 sab82532_flush_chars(struct tty_struct *tty)
-{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "sab82532_flush_chars"))
- return;
-
- if ((info->xmit.head == info->xmit.tail) ||
- tty->stopped || tty->hw_stopped || !info->xmit.buf)
- return;
-
- save_flags(flags); cli();
- info->interrupt_mask1 &= ~(SAB82532_IMR1_XPR);
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- sab82532_start_tx(info);
- restore_flags(flags);
-}
-
-static int sab82532_write(struct tty_struct * tty, int from_user,
- const unsigned char *buf, int count)
-{
- int c, ret = 0;
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "sab82532_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);
+ up->port.ignore_status_mask |= (SAB82532_ISR0_RPF |
+ SAB82532_ISR0_TCD);
+
+ /* Now bang the new settings into the chip. */
+ sunsab_cec_wait(up);
+ sunsab_tec_wait(up);
+ writeb(dafo, &up->regs->w.dafo);
+ writeb(ebrg & 0xff, &up->regs->w.bgr);
+ writeb((readb(&up->regs->rw.ccr2) & ~0xc0) | ((ebrg >> 2) & 0xc0),
+ &up->regs->rw.ccr2);
+
+ if (cflag & CRTSCTS) {
+ writeb(readb(&up->regs->rw.mode) & ~SAB82532_MODE_RTS,
+ &up->regs->rw.mode);
+ writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FRTS,
+ &up->regs->rw.mode);
+ writeb(readb(&up->regs->rw.mode) & ~SAB82532_MODE_FCTS,
+ &up->regs->rw.mode);
+ up->interrupt_mask1 &= ~SAB82532_IMR1_CSC;
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
} 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->interrupt_mask1 &= ~(SAB82532_IMR1_XPR);
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
- sab82532_start_tx(info);
+ writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
+ &up->regs->rw.mode);
+ writeb(readb(&up->regs->rw.mode) & ~SAB82532_MODE_FRTS,
+ &up->regs->rw.mode);
+ writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FCTS,
+ &up->regs->rw.mode);
+ up->interrupt_mask1 |= SAB82532_IMR1_CSC;
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
}
+ writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RAC, &up->regs->rw.mode);
- restore_flags(flags);
- return ret;
}
-static int sab82532_write_room(struct tty_struct *tty)
+/* port->lock is not held. */
+static void sunsab_change_speed(struct uart_port *port, unsigned int cflag,
+ unsigned int iflag, unsigned int quot)
{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
-
- if (serial_paranoia_check(info, tty->device, "sab82532_write_room"))
- return 0;
-
- return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-static int sab82532_chars_in_buffer(struct tty_struct *tty)
-{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
-
- if (serial_paranoia_check(info, tty->device, "sab82532_chars_in_buffer"))
- return 0;
-
- return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
-}
-
-static void sab82532_flush_buffer(struct tty_struct *tty)
-{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
+ struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
unsigned long flags;
+ int baud;
- if (serial_paranoia_check(info, tty->device, "sab82532_flush_buffer"))
- return;
+ spin_lock_irqsave(&up->port.lock, flags);
- save_flags(flags); cli();
- info->xmit.head = info->xmit.tail = 0;
- restore_flags(flags);
+ /* Undo what generic UART core did. */
+ baud = (SAB_BASE_BAUD / (quot * 16));
- wake_up_interruptible(&tty->write_wait);
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
-}
+ sunsab_convert_to_sab(up, cflag, iflag, baud);
-/*
- * This function is used to send a high-priority XON/XOFF character to
- * the device
- */
-static void sab82532_send_xchar(struct tty_struct *tty, char ch)
-{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
- unsigned long flags;
-
- if (serial_paranoia_check(info, tty->device, "sab82532_send_xchar"))
- return;
-
- save_flags(flags); cli();
- sab82532_tec_wait(info);
- writeb(ch, &info->regs->w.tic);
- restore_flags(flags);
+ spin_unlock_irqrestore(&up->port.lock, flags);
}
-/*
- * ------------------------------------------------------------
- * sab82532_throttle()
- *
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled.
- * ------------------------------------------------------------
- */
-static void sab82532_throttle(struct tty_struct * tty)
+static const char *sunsab_type(struct uart_port *port)
{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
-#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, "sab82532_throttle"))
- return;
-
- if (I_IXOFF(tty))
- sab82532_send_xchar(tty, STOP_CHAR(tty));
-
- if (tty->termios->c_cflag & CRTSCTS) {
- u8 mode = readb(&info->regs->r.mode);
- mode &= ~(SAB82532_MODE_FRTS | SAB82532_MODE_RTS);
- writeb(mode, &info->regs->w.mode);
- }
+ return "SunSAB";
}
-static void sab82532_unthrottle(struct tty_struct * tty)
+static void sunsab_release_port(struct uart_port *port)
{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
-#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, "sab82532_unthrottle"))
- return;
-
- if (I_IXOFF(tty)) {
- if (info->x_char)
- info->x_char = 0;
- else
- sab82532_send_xchar(tty, START_CHAR(tty));
- }
-
- if (tty->termios->c_cflag & CRTSCTS) {
- u8 mode = readb(&info->regs->r.mode);
- mode &= ~(SAB82532_MODE_RTS);
- mode |= SAB82532_MODE_FRTS;
- writeb(mode, &info->regs->w.mode);
- }
}
-/*
- * ------------------------------------------------------------
- * sab82532_ioctl() and friends
- * ------------------------------------------------------------
- */
-
-static int get_serial_info(struct sab82532 *info,
- struct serial_struct *retinfo)
+static int sunsab_request_port(struct uart_port *port)
{
- struct serial_struct tmp;
-
- if (!retinfo)
- return -EFAULT;
- memset(&tmp, 0, sizeof(tmp));
- tmp.type = info->type;
- tmp.line = info->line;
- tmp.port = (unsigned long)info->regs;
- tmp.irq = info->irq;
- tmp.flags = info->flags;
- tmp.xmit_fifo_size = info->xmit_fifo_size;
- tmp.baud_base = info->baud_base;
- tmp.close_delay = info->close_delay;
- tmp.closing_wait = info->closing_wait;
- tmp.custom_divisor = info->custom_divisor;
- tmp.hub6 = 0;
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
- return -EFAULT;
return 0;
}
-static int set_serial_info(struct sab82532 *info,
- struct serial_struct *new_info)
+static void sunsab_config_port(struct uart_port *port, int flags)
{
- return 0;
}
-
-/*
- * 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 sab82532 * info, unsigned int *value)
+static int sunsab_verify_port(struct uart_port *port, struct serial_struct *ser)
{
- unsigned int result;
-
- result = (!info->xmit.buf && test_bit(SAB82532_ALLS, &info->irqflags))
- ? TIOCSER_TEMT : 0;
- return put_user(result, value);
+ return -EINVAL;
}
+static struct uart_ops sunsab_pops = {
+ .tx_empty = sunsab_tx_empty,
+ .set_mctrl = sunsab_set_mctrl,
+ .get_mctrl = sunsab_get_mctrl,
+ .stop_tx = sunsab_stop_tx,
+ .start_tx = sunsab_start_tx,
+ .send_xchar = sunsab_send_xchar,
+ .stop_rx = sunsab_stop_rx,
+ .enable_ms = sunsab_enable_ms,
+ .break_ctl = sunsab_break_ctl,
+ .startup = sunsab_startup,
+ .shutdown = sunsab_shutdown,
+ .change_speed = sunsab_change_speed,
+ .type = sunsab_type,
+ .release_port = sunsab_release_port,
+ .request_port = sunsab_request_port,
+ .config_port = sunsab_config_port,
+ .verify_port = sunsab_verify_port,
+};
-static int get_modem_info(struct sab82532 * info, unsigned int *value)
-{
- unsigned int result;
-
- result = ((readb(&info->regs->r.mode) & SAB82532_MODE_RTS) ?
- ((readb(&info->regs->r.mode) & SAB82532_MODE_FRTS) ? 0 : TIOCM_RTS)
- : TIOCM_RTS)
- | ((readb(&info->regs->r.pvr) & info->pvr_dtr_bit) ? 0 : TIOCM_DTR)
- | ((readb(&info->regs->r.vstr) & SAB82532_VSTR_CD) ? 0 : TIOCM_CAR)
- | ((readb(&info->regs->r.pvr) & info->pvr_dsr_bit) ? 0 : TIOCM_DSR)
- | ((readb(&info->regs->r.star) & SAB82532_STAR_CTS) ? TIOCM_CTS : 0);
- return put_user(result,value);
-}
+static struct uart_driver sunsab_reg = {
+ .owner = THIS_MODULE,
+ .driver_name = "serial",
+#ifdef CONFIG_DEVFS_FS
+ .dev_name = "tts/%d",
+#else
+ .dev_name = "ttyS",
+#endif
+ .major = TTY_MAJOR,
+};
-static int set_modem_info(struct sab82532 * info, unsigned int cmd,
- unsigned int *value)
-{
- unsigned int arg;
-
- if (get_user(arg, value))
- return -EFAULT;
- switch (cmd) {
- case TIOCMBIS:
- if (arg & TIOCM_RTS) {
- writeb(readb(&info->regs->rw.mode) & ~(SAB82532_MODE_FRTS), &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_RTS, &info->regs->rw.mode);
- }
- if (arg & TIOCM_DTR) {
- writeb(readb(&info->regs->rw.pvr) & ~(info->pvr_dtr_bit), &info->regs->rw.pvr);
- }
- break;
- case TIOCMBIC:
- if (arg & TIOCM_RTS) {
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_FRTS, &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_RTS, &info->regs->rw.mode);
- }
- if (arg & TIOCM_DTR) {
- writeb(readb(&info->regs->rw.pvr) | info->pvr_dtr_bit, &info->regs->rw.pvr);
- }
- break;
- case TIOCMSET:
- if (arg & TIOCM_RTS) {
- writeb(readb(&info->regs->rw.mode) & ~(SAB82532_MODE_FRTS), &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_RTS, &info->regs->rw.mode);
- } else {
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_FRTS, &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_RTS, &info->regs->rw.mode);
- }
- if (arg & TIOCM_DTR) {
- writeb(readb(&info->regs->rw.pvr) & ~(info->pvr_dtr_bit), &info->regs->rw.pvr);
- } else {
- writeb(readb(&info->regs->rw.pvr) | info->pvr_dtr_bit, &info->regs->rw.pvr);
- }
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
+static struct uart_sunsab_port *sunsab_ports;
+static int num_channels;
-/*
- * This routine sends a break character out the serial port.
- */
-static void sab82532_break(struct tty_struct *tty, int break_state)
+static __inline__ void sunsab_console_putchar(struct uart_sunsab_port *up, char c)
{
- struct sab82532 * info = (struct sab82532 *)tty->driver_data;
unsigned long flags;
- if (serial_paranoia_check(info, tty->device, "sab82532_break"))
- return;
+ spin_lock_irqsave(&up->port.lock, flags);
- if (!info->regs)
- return;
+ sunsab_tec_wait(up);
+ writeb(c, &up->regs->w.tic);
-#ifdef SERIAL_DEBUG_SEND_BREAK
- printk("sab82532_break(%d) jiff=%lu...", break_state, jiffies);
-#endif
- save_flags(flags); cli();
- if (break_state == -1)
- writeb(readb(&info->regs->rw.dafo) | SAB82532_DAFO_XBRK, &info->regs->rw.dafo);
- else
- writeb(readb(&info->regs->rw.dafo) & ~(SAB82532_DAFO_XBRK), &info->regs->rw.dafo);
- restore_flags(flags);
+ spin_unlock_irqrestore(&up->port.lock, flags);
}
-
-static int sab82532_ioctl(struct tty_struct *tty, struct file * file,
- unsigned int cmd, unsigned long arg)
+static void sunsab_console_write(struct console *con, const char *s, unsigned n)
{
- struct sab82532 * info = (struct sab82532 *)tty->driver_data;
- struct async_icount cprev, cnow; /* kernel counter temps */
- struct serial_icounter_struct *p_cuser; /* user space */
-
- if (serial_paranoia_check(info, tty->device, "sab82532_ioctl"))
- return -ENODEV;
+ struct uart_sunsab_port *up = &sunsab_ports[con->index];
+ int i;
- if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
- (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGWILD) &&
- (cmd != TIOCSERSWILD) && (cmd != TIOCSERGSTRUCT) &&
- (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
- if (tty->flags & (1 << TTY_IO_ERROR))
- return -EIO;
+ for (i = 0; i < n; i++) {
+ if (*s == '\n')
+ sunsab_console_putchar(up, '\r');
+ sunsab_console_putchar(up, *s++);
}
-
- switch (cmd) {
- case TIOCGSOFTCAR:
- return put_user(C_CLOCAL(tty) ? 1 : 0, (int *) arg);
- case TIOCSSOFTCAR:
- if (get_user(arg, (unsigned int *) arg))
- return -EFAULT;
- tty->termios->c_cflag =
- ((tty->termios->c_cflag & ~CLOCAL) |
- (arg ? CLOCAL : 0));
- return 0;
- 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 TIOCSERGETLSR: /* Get line status register */
- return get_lsr_info(info, (unsigned int *) arg);
-
- case TIOCSERGSTRUCT:
- if (copy_to_user((struct sab82532 *) arg,
- info, sizeof(struct sab82532)))
- return -EFAULT;
- return 0;
-
- /*
- * 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:
- cli();
- /* note the counters on entry */
- cprev = info->icount;
- sti();
- while (1) {
- interruptible_sleep_on(&info->delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
- cli();
- cnow = info->icount; /* atomic copy */
- sti();
- 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:
- cli();
- cnow = info->icount;
- sti();
- p_cuser = (struct serial_icounter_struct *) arg;
- if (put_user(cnow.cts, &p_cuser->cts) ||
- put_user(cnow.dsr, &p_cuser->dsr) ||
- put_user(cnow.rng, &p_cuser->rng) ||
- put_user(cnow.dcd, &p_cuser->dcd))
- return -EFAULT;
- return 0;
-
- default:
- return -ENOIOCTLCMD;
- }
- return 0;
+ sunsab_tec_wait(up);
}
-static void sab82532_set_termios(struct tty_struct *tty,
- struct termios *old_termios)
+static kdev_t sunsab_console_device(struct console *con)
{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
-
- if ( (tty->termios->c_cflag == old_termios->c_cflag)
- && ( RELEVANT_IFLAG(tty->termios->c_iflag)
- == RELEVANT_IFLAG(old_termios->c_iflag)))
- return;
-
- change_speed(info);
-
- /* Handle transition to B0 status */
- if ((old_termios->c_cflag & CBAUD) &&
- !(tty->termios->c_cflag & CBAUD)) {
- writeb(readb(&info->regs->w.mode) | SAB82532_MODE_FRTS, &info->regs->w.mode);
- writeb(readb(&info->regs->w.mode) | SAB82532_MODE_RTS, &info->regs->w.mode);
- writeb(readb(&info->regs->w.pvr) | info->pvr_dtr_bit, &info->regs->w.pvr);
- }
-
- /* Handle transition away from B0 status */
- if (!(old_termios->c_cflag & CBAUD) &&
- (tty->termios->c_cflag & CBAUD)) {
- writeb(readb(&info->regs->w.pvr) & ~(info->pvr_dtr_bit), &info->regs->w.pvr);
- if (tty->termios->c_cflag & CRTSCTS) {
- writeb(readb(&info->regs->w.mode) & ~(SAB82532_MODE_RTS), &info->regs->w.mode);
- writeb(readb(&info->regs->w.mode) | SAB82532_MODE_FRTS, &info->regs->w.mode);
- } else if (test_bit(TTY_THROTTLED, &tty->flags)) {
- writeb(readb(&info->regs->w.mode) & ~(SAB82532_MODE_FRTS | SAB82532_MODE_RTS), &info->regs->w.mode);
- } else {
- writeb(readb(&info->regs->w.mode) & ~(SAB82532_MODE_FRTS), &info->regs->w.mode);
- writeb(readb(&info->regs->w.mode) | SAB82532_MODE_RTS, &info->regs->w.mode);
- }
- }
-
- /* Handle turning off CRTSCTS */
- if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
- sab82532_start(tty);
- }
+ return mk_kdev(sunsab_reg.major, sunsab_reg.minor + con->index);
}
-/*
- * ------------------------------------------------------------
- * sab82532_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 sab82532_close(struct tty_struct *tty, struct file * filp)
+static int sunsab_console_setup(struct console *con, char *options)
{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
+ struct uart_sunsab_port *up = &sunsab_ports[con->index];
unsigned long flags;
+ int baud;
- if (!info || serial_paranoia_check(info, tty->device, "sab82532_close"))
- return;
-
- save_flags(flags); cli();
+ printk("Console: ttyS%d (SAB82532)\n",
+ (sunsab_reg.minor - 64) + con->index);
- if (tty_hung_up_p(filp)) {
- MOD_DEC_USE_COUNT;
- restore_flags(flags);
- return;
- }
+ sunserial_console_termios(con);
-#ifdef SERIAL_DEBUG_OPEN
- printk("sab82532_close ttys%d, count = %d\n", info->line, info->count);
-#endif
- if ((tty->count == 1) && (info->count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. info->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("sab82532_close: bad serial port count; tty->count is 1,"
- " info->count is %d\n", info->count);
- info->count = 1;
- }
- if (--info->count < 0) {
- printk("sab82532_close: bad serial port count for ttys%d: %d\n",
- info->line, info->count);
- info->count = 0;
- }
- if (info->count) {
- MOD_DEC_USE_COUNT;
- restore_flags(flags);
- return;
- }
- info->flags |= ASYNC_CLOSING;
- /*
- * Save the termios structure, since this port may have
- * separate termios for callout and dialin.
- */
- if (info->flags & ASYNC_NORMAL_ACTIVE)
- info->normal_termios = *tty->termios;
- if (info->flags & ASYNC_CALLOUT_ACTIVE)
- info->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.
+ /* Firmware console speed is limited to 150-->38400 baud so
+ * this hackish cflag thing is OK.
*/
- tty->closing = 1;
- if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->closing_wait);
+ switch (con->cflag & CBAUD) {
+ case B150: baud = 150; break;
+ case B300: baud = 300; break;
+ case B600: baud = 600; break;
+ case B1200: baud = 1200; break;
+ case B2400: baud = 2400; break;
+ case B4800: baud = 4800; break;
+ default: case B9600: baud = 9600; break;
+ case B19200: baud = 19200; break;
+ case B38400: baud = 38400; break;
+ };
/*
- * At this point we stop accepting input. To do this, we
- * disable the receive line status interrupts, and turn off
- * the receiver.
+ * Temporary fix.
*/
- info->interrupt_mask0 |= SAB82532_IMR0_TCD;
- writeb(info->interrupt_mask0, &info->regs->w.imr0);
- if (info->flags & ASYNC_INITIALIZED) {
- /*
- * Before we drop DTR, make sure the UART transmitter
- * has completely drained; this is especially
- * important if there is a transmit FIFO!
- */
- sab82532_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) {
- 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;
- restore_flags(flags);
-}
-
-/*
- * sab82532_wait_until_sent() --- wait until the transmitter is empty
- */
-static void sab82532_wait_until_sent(struct tty_struct *tty, int timeout)
-{
- struct sab82532 *info = (struct sab82532 *)tty->driver_data;
- unsigned long orig_jiffies, char_time;
-
- if (serial_paranoia_check(info,tty->device,"sab82532_wait_until_sent"))
- return;
+ spin_lock_init(&up->port.lock);
/*
- * 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.
+ * Initialize the hardware
*/
- char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
- char_time = char_time / 5;
- if (char_time == 0)
- char_time = 1;
- if (timeout)
- char_time = MIN(char_time, timeout);
-#ifdef SERIAL_DEBUG_WAIT_UNTIL_SENT
- printk("In sab82532_wait_until_sent(%d) check=%lu "
- "xmit_cnt = %ld, alls = %d (jiff=%lu)...\n",
- timeout, char_time,
- CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),
- test_bit(SAB82532_ALLS, &info->irqflags), jiffies);
-#endif
- orig_jiffies = jiffies;
- while ((info->xmit.head != info->xmit.tail) ||
- !test_bit(SAB82532_ALLS, &info->irqflags)) {
- 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_WAIT_UNTIL_SENT
- printk("xmit_cnt = %ld, alls = %d (jiff=%lu)...done\n",
- CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),
- test_bit(SAB82532_ALLS, &info->irqflags), jiffies);
-#endif
-}
-
-/*
- * sab82532_hangup() --- called by tty_hangup() when a hangup is signaled.
- */
-static void sab82532_hangup(struct tty_struct *tty)
-{
- struct sab82532 * info = (struct sab82532 *)tty->driver_data;
-
- if (serial_paranoia_check(info, tty->device, "sab82532_hangup"))
- return;
-
-#ifdef CONFIG_SERIAL_CONSOLE
- if (info->is_console)
- return;
-#endif
-
- sab82532_flush_buffer(tty);
- shutdown(info);
- info->event = 0;
- info->count = 0;
- info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
- info->tty = 0;
- wake_up_interruptible(&info->open_wait);
-}
+ sunsab_startup(&up->port);
-/*
- * ------------------------------------------------------------
- * sab82532_open() and friends
- * ------------------------------------------------------------
- */
-static int block_til_ready(struct tty_struct *tty, struct file * filp,
- struct sab82532 *info)
-{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- int do_clocal = 0;
+ spin_lock_irqsave(&up->port.lock, flags);
/*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
+ * Finally, enable interrupts
*/
- 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
- if (info->flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- else
- return -ERESTARTSYS;
-#else
- return -EAGAIN;
-#endif
- }
+ up->interrupt_mask0 = SAB82532_IMR0_PERR | SAB82532_IMR0_FERR |
+ SAB82532_IMR0_PLLA | SAB82532_IMR0_CDSC;
+ writeb(up->interrupt_mask0, &up->regs->w.imr0);
+ up->interrupt_mask1 = SAB82532_IMR1_BRKT | SAB82532_IMR1_ALLS |
+ SAB82532_IMR1_XOFF | SAB82532_IMR1_TIN |
+ SAB82532_IMR1_CSC | SAB82532_IMR1_XON |
+ SAB82532_IMR1_XPR;
+ writeb(up->interrupt_mask1, &up->regs->w.imr1);
- /*
- * 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;
- }
+ sunsab_convert_to_sab(up, con->cflag, 0, baud);
- if (info->flags & ASYNC_CALLOUT_ACTIVE) {
- if (info->normal_termios.c_cflag & CLOCAL)
- do_clocal = 1;
- } else {
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
- }
+ spin_unlock_irqrestore(&up->port.lock, flags);
- /*
- * 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, info->count is dropped by one, so that
- * sab82532_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",
- info->line, info->count);
-#endif
- cli();
- if (!tty_hung_up_p(filp))
- info->count--;
- sti();
- info->blocked_open++;
- while (1) {
- cli();
- if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
- (tty->termios->c_cflag & CBAUD)) {
- writeb(readb(&info->regs->rw.pvr) & ~(info->pvr_dtr_bit), &info->regs->rw.pvr);
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_FRTS, &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) & ~(SAB82532_MODE_RTS), &info->regs->rw.mode);
- }
- sti();
- 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 || !(readb(&info->regs->r.vstr) & SAB82532_VSTR_CD)))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-#ifdef SERIAL_DEBUG_OPEN
- printk("block_til_ready blocking: ttyS%d, count = %d, flags = %x, clocal = %d, vstr = %02x\n",
- info->line, info->count, info->flags, do_clocal, readb(&info->regs->r.vstr));
-#endif
- schedule();
- }
- current->state = TASK_RUNNING;
- remove_wait_queue(&info->open_wait, &wait);
- if (!tty_hung_up_p(filp))
- info->count++;
- info->blocked_open--;
-#ifdef SERIAL_DEBUG_OPEN
- printk("block_til_ready after blocking: ttys%d, count = %d\n",
- info->line, info->count);
-#endif
- if (retval)
- return retval;
- info->flags |= ASYNC_NORMAL_ACTIVE;
- 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 sab82532_open(struct tty_struct *tty, struct file * filp)
-{
- struct sab82532 *info = sab82532_chain;
- int retval, line;
- unsigned long page;
-
-#ifdef SERIAL_DEBUG_OPEN
- printk("sab82532_open: count = %d\n", info->count);
-#endif
-
- line = minor(tty->device) - tty->driver.minor_start;
- if ((line < 0) || (line >= NR_PORTS))
- return -ENODEV;
-
- while (info) {
- if (info->line == line)
- break;
- info = info->next;
- }
- if (!info) {
- printk("sab82532_open: can't find info for line %d\n",
- line);
- return -ENODEV;
- }
-
- if (serial_paranoia_check(info, tty->device, "sab82532_open"))
- return -ENODEV;
-
-#ifdef SERIAL_DEBUG_OPEN
- printk("sab82532_open %s%d, count = %d\n", tty->driver.name, info->line,
- info->count);
-#endif
-
- if (!tmp_buf) {
- page = get_free_page(GFP_KERNEL);
- if (!page)
- return -ENOMEM;
- if (tmp_buf)
- free_page(page);
- else
- tmp_buf = (unsigned char *) page;
- }
-
- info->count++;
- tty->driver_data = info;
- info->tty = tty;
-
- /*
- * If the port is in 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);
-#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)
- return retval;
-
- MOD_INC_USE_COUNT;
- retval = block_til_ready(tty, filp, info);
- if (retval) {
-#ifdef SERIAL_DEBUG_OPEN
- printk("sab82532_open returning after block_til_ready with %d\n",
- retval);
-#endif
- return retval;
- }
-
- if ((info->count == 1) &&
- (info->flags & ASYNC_SPLIT_TERMIOS)) {
- if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
- *tty->termios = info->normal_termios;
- else
- *tty->termios = info->callout_termios;
- change_speed(info);
- }
-
-#ifdef CONFIG_SERIAL_CONSOLE
- if (sab82532_console.cflag && sab82532_console.index == line) {
- tty->termios->c_cflag = sab82532_console.cflag;
- sab82532_console.cflag = 0;
- change_speed(info);
- }
-#endif
-
- info->session = current->session;
- info->pgrp = current->pgrp;
-
-#ifdef SERIAL_DEBUG_OPEN
- printk("sab82532_open ttys%d successful... count %d", info->line, info->count);
-#endif
return 0;
}
-/*
- * /proc fs routines....
- */
+static struct console sunsab_console = {
+ .name = "ttyS",
+ .write = sunsab_console_write,
+ .device = sunsab_console_device,
+ .setup = sunsab_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
-static __inline__ int
-line_info(char *buf, struct sab82532 *info)
+static void __init sunsab_console_init(void)
{
- unsigned long flags;
- char stat_buf[30];
- int ret;
+ int i;
- ret = sprintf(buf, "%u: uart:SAB82532 ", info->line);
- switch (info->type) {
- case 0:
- ret += sprintf(buf+ret, "V1.0 ");
- break;
- case 1:
- ret += sprintf(buf+ret, "V2.0 ");
- break;
- case 2:
- ret += sprintf(buf+ret, "V3.2 ");
- break;
- default:
- ret += sprintf(buf+ret, "V?.? ");
- break;
- }
- ret += sprintf(buf+ret, "port:%lX irq:%s",
- (unsigned long)info->regs, __irq_itoa(info->irq));
+ if (con_is_present())
+ return;
- if (!info->regs) {
- ret += sprintf(buf+ret, "\n");
- return ret;
- }
+ for (i = 0; i < num_channels; i++) {
+ int this_minor = sunsab_reg.minor + i;
- /*
- * Figure out the current RS-232 lines
- */
- stat_buf[0] = 0;
- stat_buf[1] = 0;
- save_flags(flags); cli();
- if (readb(&info->regs->r.mode) & SAB82532_MODE_RTS) {
- if (!(readb(&info->regs->r.mode) & SAB82532_MODE_FRTS))
- strcat(stat_buf, "|RTS");
- } else {
- strcat(stat_buf, "|RTS");
+ if ((this_minor - 64) == (serial_console - 1))
+ break;
}
- if (readb(&info->regs->r.star) & SAB82532_STAR_CTS)
- strcat(stat_buf, "|CTS");
- if (!(readb(&info->regs->r.pvr) & info->pvr_dtr_bit))
- strcat(stat_buf, "|DTR");
- if (!(readb(&info->regs->r.pvr) & info->pvr_dsr_bit))
- strcat(stat_buf, "|DSR");
- if (!(readb(&info->regs->r.vstr) & SAB82532_VSTR_CD))
- strcat(stat_buf, "|CD");
- restore_flags(flags);
-
- if (info->baud)
- ret += sprintf(buf+ret, " baud:%u", info->baud);
-
- ret += sprintf(buf+ret, " tx:%u rx:%u",
- info->icount.tx, info->icount.rx);
-
- if (info->icount.frame)
- ret += sprintf(buf+ret, " fe:%u", info->icount.frame);
-
- if (info->icount.parity)
- ret += sprintf(buf+ret, " pe:%u", info->icount.parity);
-
- if (info->icount.brk)
- ret += sprintf(buf+ret, " brk:%u", info->icount.brk);
-
- if (info->icount.overrun)
- ret += sprintf(buf+ret, " oe:%u", info->icount.overrun);
-
- /*
- * Last thing is the RS-232 status lines.
- */
- ret += sprintf(buf+ret, " %s\n", stat_buf + 1);
- return ret;
-}
+ if (i == num_channels)
+ return;
-int sab82532_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct sab82532 *info = sab82532_chain;
- off_t begin = 0;
- int len = 0;
-
- len += sprintf(page, "serinfo:1.0 driver:%s\n", serial_version);
- for (info = sab82532_chain; info && len < 4000; info = info->next) {
- len += line_info(page + len, info);
- 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);
+ sunsab_console.index = i;
+ register_console(&sunsab_console);
}
-/*
- * ---------------------------------------------------------------------
- * sab82532_init() and friends
- *
- * sab82532_init() is called at boot-time to initialize the serial driver.
- * ---------------------------------------------------------------------
- */
-static int __init get_sab82532(unsigned long *memory_start)
+static void __init for_each_sab_edev(void (*callback)(struct linux_ebus_device *, void *), void *arg)
{
struct linux_ebus *ebus;
- struct linux_ebus_device *edev = 0;
- struct sab82532 *sab;
- unsigned long regs, offset;
- int i;
+ struct linux_ebus_device *edev = NULL;
for_each_ebus(ebus) {
for_each_ebusdev(edev, ebus) {
- if (!strcmp(edev->prom_name, "se"))
- goto ebus_done;
-
- if (!strcmp(edev->prom_name, "serial")) {
+ if (!strcmp(edev->prom_name, "se")) {
+ callback(edev, arg);
+ continue;
+ } else if (!strcmp(edev->prom_name, "serial")) {
char compat[32];
int clen;
compat, sizeof(compat));
if (clen > 0) {
if (strncmp(compat, "sab82532", 8) == 0) {
- /* Yep. */
- goto ebus_done;
+ callback(edev, arg);
+ continue;
}
}
}
}
}
-ebus_done:
- if (!edev)
- return -ENODEV;
+}
+
+static void __init sab_count_callback(struct linux_ebus_device *edev, void *arg)
+{
+ int *count_p = arg;
+
+ (*count_p)++;
+}
+
+static void __init sab_attach_callback(struct linux_ebus_device *edev, void *arg)
+{
+ int *instance_p = arg;
+ struct uart_sunsab_port *up;
+ unsigned long regs, offset;
+ int i;
regs = edev->resource[0].start;
offset = sizeof(union sab82532_async_regs);
-
for (i = 0; i < 2; i++) {
- if (memory_start) {
- *memory_start = (*memory_start + 7) & ~(7);
- sab = (struct sab82532 *)*memory_start;
- *memory_start += sizeof(struct sab82532);
- } else {
- sab = (struct sab82532 *)kmalloc(sizeof(struct sab82532),
- GFP_KERNEL);
- if (!sab) {
- printk("sab82532: can't alloc sab struct\n");
- break;
- }
- }
- memset(sab, 0, sizeof(struct sab82532));
-
- sab->regs = ioremap(regs + offset, sizeof(union sab82532_async_regs));
- sab->irq = edev->irqs[0];
- sab->line = 1 - i;
- sab->xmit_fifo_size = 32;
- sab->recv_fifo_size = 32;
+ up = &sunsab_ports[(*instance_p * 2) + i];
- writeb(SAB82532_IPC_IC_ACT_LOW, &sab->regs->w.ipc);
+ memset(up, 0, sizeof(*up));
+ up->regs = ioremap(regs + offset, sizeof(union sab82532_async_regs));
+ up->irq = edev->irqs[0];
+ up->sab_line = 1 - i;
+ up->xmit_fifo_size = 32;
+ up->recv_fifo_size = 32;
- sab->next = sab82532_chain;
- sab82532_chain = sab;
+ writeb(SAB82532_IPC_IC_ACT_LOW, &up->regs->w.ipc);
offset -= sizeof(union sab82532_async_regs);
}
- return 0;
}
-#ifndef MODULE
-static void __init sab82532_kgdb_hook(int line)
+static int __init probe_for_sabs(void)
{
- prom_printf("sab82532: kgdb support is not implemented, yet\n");
- prom_halt();
-}
-#endif
+ int this_sab = 0;
-static inline void __init show_serial_version(void)
-{
- char *revision = "$Revision: 1.66 $";
- char *version, *p;
-
- version = strchr(revision, ' ');
- strcpy(serial_version, ++version);
- p = strchr(serial_version, ' ');
- *p = '\0';
- printk("SAB82532 serial driver version %s\n", serial_version);
-}
+ /* Find device instances. */
+ for_each_sab_edev(&sab_count_callback, &this_sab);
+ if (!this_sab)
+ return -ENODEV;
-extern int su_num_ports;
+ /* Allocate tables. */
+ sunsab_ports = kmalloc(sizeof(struct uart_sunsab_port) * this_sab * 2,
+ GFP_KERNEL);
+ if (!sunsab_ports)
+ return -ENOMEM;
-/*
- * The serial driver boot-time initialization code!
- */
-int __init sab82532_init(void)
-{
- struct sab82532 *info;
- int i;
+ num_channels = this_sab * 2;
- if (!sab82532_chain)
- get_sab82532(0);
- if (!sab82532_chain)
- return -ENODEV;
+ this_sab = 0;
+ for_each_sab_edev(&sab_attach_callback, &this_sab);
+ return 0;
+}
- init_bh(SERIAL_BH, do_serial_bh);
+static void __init sunsab_init_hw(void)
+{
+ int i;
- show_serial_version();
+ for (i = 0; i < num_channels; i++) {
+ struct uart_sunsab_port *up = &sunsab_ports[i];
- /* Initialize the tty_driver structure */
- memset(&serial_driver, 0, sizeof(struct tty_driver));
- serial_driver.magic = TTY_DRIVER_MAGIC;
- serial_driver.driver_name = "serial";
-#ifdef CONFIG_DEVFS_FS
- serial_driver.name = "tts/%d";
-#else
- serial_driver.name = "ttyS";
-#endif
- serial_driver.major = TTY_MAJOR;
- serial_driver.minor_start = 64 + su_num_ports;
- 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;
- serial_driver.refcount = &sab82532_refcount;
- serial_driver.table = sab82532_table;
- serial_driver.termios = sab82532_termios;
- serial_driver.termios_locked = sab82532_termios_locked;
-
- serial_driver.open = sab82532_open;
- serial_driver.close = sab82532_close;
- serial_driver.write = sab82532_write;
- serial_driver.put_char = sab82532_put_char;
- serial_driver.flush_chars = sab82532_flush_chars;
- serial_driver.write_room = sab82532_write_room;
- serial_driver.chars_in_buffer = sab82532_chars_in_buffer;
- serial_driver.flush_buffer = sab82532_flush_buffer;
- serial_driver.ioctl = sab82532_ioctl;
- serial_driver.throttle = sab82532_throttle;
- serial_driver.unthrottle = sab82532_unthrottle;
- serial_driver.send_xchar = sab82532_send_xchar;
- serial_driver.set_termios = sab82532_set_termios;
- serial_driver.stop = sab82532_stop;
- serial_driver.start = sab82532_start;
- serial_driver.hangup = sab82532_hangup;
- serial_driver.break_ctl = sab82532_break;
- serial_driver.wait_until_sent = sab82532_wait_until_sent;
- serial_driver.read_proc = sab82532_read_proc;
+ up->port.line = i;
+ up->port.ops = &sunsab_pops;
+ up->port.type = PORT_SUNSAB;
+ up->port.uartclk = SAB_BASE_BAUD;
- /*
- * The callout device is just like normal device except for
- * major number and the subtype code.
- */
- callout_driver = serial_driver;
-#ifdef 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;
- callout_driver.read_proc = 0;
- callout_driver.proc_entry = 0;
-
- 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 (info = sab82532_chain, i = 0; info; info = info->next, i++) {
- info->magic = SERIAL_MAGIC;
-
- info->type = readb(&info->regs->r.vstr) & 0x0f;
- writeb(~((1 << 1) | (1 << 2) | (1 << 4)), &info->regs->w.pcr);
- writeb(0xff, &info->regs->w.pim);
- if (info->line == 0) {
- info->pvr_dsr_bit = (1 << 0);
- info->pvr_dtr_bit = (1 << 1);
+ up->type = readb(&up->regs->r.vstr) & 0x0f;
+ writeb(~((1 << 1) | (1 << 2) | (1 << 4)), &up->regs->w.pcr);
+ writeb(0xff, &up->regs->w.pim);
+ if (up->sab_line == 0) {
+ up->pvr_dsr_bit = (1 << 0);
+ up->pvr_dtr_bit = (1 << 1);
} else {
- info->pvr_dsr_bit = (1 << 3);
- info->pvr_dtr_bit = (1 << 2);
+ up->pvr_dsr_bit = (1 << 3);
+ up->pvr_dtr_bit = (1 << 2);
}
- writeb((1 << 1) | (1 << 2) | (1 << 4), &info->regs->w.pvr);
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_FRTS, &info->regs->rw.mode);
- writeb(readb(&info->regs->rw.mode) | SAB82532_MODE_RTS, &info->regs->rw.mode);
-
- info->custom_divisor = 16;
- info->close_delay = 5*HZ/10;
- info->closing_wait = 30*HZ;
- info->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
- info->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
- info->x_char = 0;
- info->event = 0;
- info->blocked_open = 0;
- info->tqueue.routine = do_softint;
- info->tqueue.data = info;
- info->tqueue_hangup.routine = do_serial_hangup;
- info->tqueue_hangup.data = info;
- info->callout_termios = callout_driver.init_termios;
- info->normal_termios = serial_driver.init_termios;
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
- init_waitqueue_head(&info->delta_msr_wait);
- info->icount.cts = info->icount.dsr =
- info->icount.rng = info->icount.dcd = 0;
- info->icount.rx = info->icount.tx = 0;
- info->icount.frame = info->icount.parity = 0;
- info->icount.overrun = info->icount.brk = 0;
-
- if (!(info->line & 0x01)) {
- if (request_irq(info->irq, sab82532_interrupt, SA_SHIRQ,
- "serial(sab82532)", info)) {
- printk("sab82532: can't get IRQ %x\n",
- info->irq);
- panic("sab82532 initialization failed");
+ writeb((1 << 1) | (1 << 2) | (1 << 4), &up->regs->w.pvr);
+ writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FRTS,
+ &up->regs->rw.mode);
+ writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
+ &up->regs->rw.mode);
+
+ up->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
+ up->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
+
+ if (!(up->sab_line & 0x01)) {
+ if (request_irq(up->irq, sunsab_interrupt, SA_SHIRQ,
+ "serial(sab82532)", up)) {
+ printk("sunsab%d: can't get IRQ %x\n",
+ i, up->irq);
+ continue;
}
}
printk(KERN_INFO
- "ttyS%02d at 0x%lx (irq = %s) is a SAB82532 %s\n",
- info->line + su_num_ports, (unsigned long)info->regs,
- __irq_itoa(info->irq), sab82532_version[info->type]);
+ "sunsab%d at 0x%lx (irq = %s) is a SAB82532 %s\n",
+ i, (unsigned long)up->regs,
+ __irq_itoa(up->irq), sab82532_version[up->type]);
}
-
-#ifdef SERIAL_LOG_DEVICE
- dprint_init(SERIAL_LOG_DEVICE);
-#endif
- return 0;
}
-int __init sab82532_probe(void)
+static int __init sunsab_init(void)
{
- int node, enode, snode;
- char model[32];
- int len;
+ int ret = probe_for_sabs();
+ int i;
- node = prom_getchild(prom_root_node);
- node = prom_searchsiblings(node, "pci");
+ if (ret < 0)
+ return ret;
- /*
- * Check for SUNW,sabre on Ultra 5/10/AXi.
- */
- len = prom_getproperty(node, "model", model, sizeof(model));
- if ((len > 0) && !strncmp(model, "SUNW,sabre", len)) {
- node = prom_getchild(node);
- node = prom_searchsiblings(node, "pci");
- }
+ sunsab_init_hw();
- /*
- * For each PCI bus...
- */
- while (node) {
- enode = prom_getchild(node);
- enode = prom_searchsiblings(enode, "ebus");
+ sunsab_reg.minor = sunserial_current_minor;
+ sunserial_current_minor += num_channels;
- /*
- * For each EBus on this PCI...
- */
- while (enode) {
- int child;
+ sunsab_reg.nr = num_channels;
+ sunsab_reg.cons = &sunsab_console;
- child = prom_getchild(enode);
- snode = prom_searchsiblings(child, "se");
- if (snode)
- goto found;
+ ret = uart_register_driver(&sunsab_reg);
+ if (ret < 0) {
+ int i;
- snode = prom_searchsiblings(child, "serial");
- if (snode) {
- char compat[32];
- int clen;
-
- clen = prom_getproperty(snode, "compatible",
- compat, sizeof(compat));
- if (clen > 0) {
- if (strncmp(compat, "sab82532", 8) == 0)
- goto found;
- }
- }
+ for (i = 0; i < num_channels; i++) {
+ struct uart_sunsab_port *up = &sunsab_ports[i];
- enode = prom_getsibling(enode);
- enode = prom_searchsiblings(enode, "ebus");
+ if (!(up->sab_line & 0x01))
+ free_irq(up->irq, up);
+ iounmap(up->regs);
}
- node = prom_getsibling(node);
- node = prom_searchsiblings(node, "pci");
- }
- return -ENODEV;
-
-found:
-#ifdef CONFIG_SERIAL_CONSOLE
- sunserial_setinitfunc(sab82532_console_init);
-#endif
-#ifndef MODULE
- sunserial_setinitfunc(sab82532_init);
- rs_ops.rs_kgdb_hook = sab82532_kgdb_hook;
-#endif
- return 0;
-}
-
-#ifdef MODULE
-MODULE_LICENSE("GPL");
-
-int init_module(void)
-{
- if (get_sab82532(0))
- return -ENODEV;
-
- return sab82532_init();
-}
-
-void cleanup_module(void)
-{
- struct sab82532 *sab;
- unsigned long flags;
- int e1, e2;
-
- /* printk("Unloading %s: version %s\n", serial_name, serial_version); */
- 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);
-
- if (tmp_buf) {
- free_page((unsigned long) tmp_buf);
- tmp_buf = NULL;
- }
- for (sab = sab82532_chain; sab; sab = sab->next) {
- if (!(sab->line & 0x01))
- free_irq(sab->irq, sab);
- iounmap(sab->regs);
- }
-}
-#endif /* MODULE */
-
-#ifdef CONFIG_SERIAL_CONSOLE
-static __inline__ void
-sab82532_console_putchar(struct sab82532 *info, char c)
-{
- unsigned long flags;
-
- save_flags(flags); cli();
- sab82532_tec_wait(info);
- writeb(c, &info->regs->w.tic);
- restore_flags(flags);
-}
+ kfree(sunsab_ports);
+ sunsab_ports = NULL;
-static void
-sab82532_console_write(struct console *con, const char *s, unsigned n)
-{
- struct sab82532 *info;
- int i;
-
- info = sab82532_chain;
- for (i = con->index; i; i--) {
- info = info->next;
- if (!info)
- return;
- }
-
- for (i = 0; i < n; i++) {
- if (*s == '\n')
- sab82532_console_putchar(info, '\r');
- sab82532_console_putchar(info, *s++);
- }
- sab82532_tec_wait(info);
-}
-
-static kdev_t
-sab82532_console_device(struct console *con)
-{
- return mk_kdev(TTY_MAJOR, 64 + con->index);
-}
-
-static int
-sab82532_console_setup(struct console *con, char *options)
-{
- static struct tty_struct c_tty;
- static struct termios c_termios;
- struct sab82532 *info;
- tcflag_t cflag;
- int i;
-
- info = sab82532_chain;
- for (i = con->index; i; i--) {
- info = info->next;
- if (!info)
- return -ENODEV;
+ return ret;
}
- info->is_console = 1;
-
- /*
- * Initialize the hardware
- */
- sab82532_init_line(info);
-
- /*
- * Finally, enable interrupts
- */
- info->interrupt_mask0 = SAB82532_IMR0_PERR | SAB82532_IMR0_FERR |
- SAB82532_IMR0_PLLA | SAB82532_IMR0_CDSC;
- writeb(info->interrupt_mask0, &info->regs->w.imr0);
- info->interrupt_mask1 = SAB82532_IMR1_BRKT | SAB82532_IMR1_ALLS |
- SAB82532_IMR1_XOFF | SAB82532_IMR1_TIN |
- SAB82532_IMR1_CSC | SAB82532_IMR1_XON |
- SAB82532_IMR1_XPR;
- writeb(info->interrupt_mask1, &info->regs->w.imr1);
-
- printk("Console: ttyS%d (SAB82532)\n", info->line);
- sunserial_console_termios(con);
- cflag = con->cflag;
+ for (i = 0; i < num_channels; i++) {
+ struct uart_sunsab_port *up = &sunsab_ports[i];
- /*
- * Fake up the tty and tty->termios structures so we can use
- * change_speed (and eliminate a lot of duplicate code).
- */
- if (!info->tty) {
- memset(&c_tty, 0, sizeof(c_tty));
- info->tty = &c_tty;
- }
- if (!info->tty->termios) {
- memset(&c_termios, 0, sizeof(c_termios));
- info->tty->termios = &c_termios;
+ uart_add_one_port(&sunsab_reg, &up->port);
}
- info->tty->termios->c_cflag = con->cflag;
- change_speed(info);
+ sunsab_console_init();
- /* Now take out the pointers to static structures if necessary */
- if (info->tty->termios == &c_termios)
- info->tty->termios = 0;
- if (info->tty == &c_tty)
- info->tty = 0;
-
return 0;
}
-static struct console sab82532_console = {
- .name = "ttyS",
- .write = sab82532_console_write,
- .device = sab82532_console_device,
- .setup = sab82532_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
-};
-
-int __init sab82532_console_init(void)
+static void __exit sunsab_exit(void)
{
- extern int su_console_registered;
-
- if (con_is_present() || su_console_registered)
- return 0;
+ int i;
- if (!sab82532_chain) {
- prom_printf("sab82532_console_setup: can't get SAB82532 chain");
- prom_halt();
- }
+ for (i = 0; i < num_channels; i++) {
+ struct uart_sunsab_port *up = &sunsab_ports[i];
- sab82532_console.index = serial_console - 1;
- register_console(&sab82532_console);
- return 0;
-}
+ uart_remove_one_port(&sunsab_reg, &up->port);
-#ifdef SERIAL_LOG_DEVICE
+ if (!(up->sab_line & 0x01))
+ free_irq(up->irq, up);
+ iounmap(up->regs);
+ }
-static int serial_log_device = 0;
+ uart_unregister_driver(&sunsab_reg);
-static void
-dprint_init(int tty)
-{
- serial_console = tty + 1;
- sab82532_console.index = tty;
- sab82532_console_setup(&sab82532_console, "");
- serial_console = 0;
- serial_log_device = tty + 1;
+ kfree(sunsab_ports);
+ sunsab_ports = NULL;
}
-int
-dprintf(const char *fmt, ...)
-{
- static char buffer[4096];
- va_list args;
- int i;
+module_init(sunsab_init);
+module_exit(sunsab_exit);
- if (!serial_log_device)
- return 0;
-
- va_start(args, fmt);
- i = vsprintf(buffer, fmt, args);
- va_end(args);
- sab82532_console.write(&sab82532_console, buffer, i);
- return i;
-}
-#endif /* SERIAL_LOG_DEVICE */
-#endif /* CONFIG_SERIAL_CONSOLE */
+MODULE_AUTHOR("Eddie C. Dost and David S. Miller");
+MODULE_DESCRIPTION("Sun SAB82532 serial port driver");
+MODULE_LICENSE("GPL");
projects / history.git / commitdiff