Rename "General setup" to "Processor type and features".
Move ACPI types after the point where HP_SIM gets defined.
Pick up HP Ski configuration options from arch/ia64/hp/Config.in.
-mainmenu_name "Kernel configuration of Linux for IA-64 machines"
+mainmenu_name "IA-64 Linux Kernel Configuration"
source init/Config.in
mainmenu_option next_comment
-comment 'General setup'
+comment 'Processor type and features'
define_bool CONFIG_IA64 y
define_bool CONFIG_RWSEM_GENERIC_SPINLOCK y
define_bool CONFIG_RWSEM_XCHGADD_ALGORITHM n
-if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
- define_bool CONFIG_ACPI y
- define_bool CONFIG_ACPI_EFI y
- define_bool CONFIG_ACPI_INTERPRETER y
- define_bool CONFIG_ACPI_KERNEL_CONFIG y
-fi
-
choice 'IA-64 processor type' \
"Itanium CONFIG_ITANIUM \
McKinley CONFIG_MCKINLEY" Itanium
16KB CONFIG_IA64_PAGE_SIZE_16KB \
64KB CONFIG_IA64_PAGE_SIZE_64KB" 16KB
+if [ "$CONFIG_IA64_HP_SIM" = "n" ]; then
+ define_bool CONFIG_ACPI y
+ define_bool CONFIG_ACPI_EFI y
+ define_bool CONFIG_ACPI_INTERPRETER y
+ define_bool CONFIG_ACPI_KERNEL_CONFIG y
+fi
+
if [ "$CONFIG_ITANIUM" = "y" ]; then
define_bool CONFIG_IA64_BRL_EMU y
bool ' Enable Itanium B-step specific code' CONFIG_ITANIUM_BSTEP_SPECIFIC
fi # !HP_SIM
if [ "$CONFIG_IA64_HP_SIM" != "n" -o "$CONFIG_IA64_GENERIC" != "n" ]; then
- mainmenu_option next_comment
- comment 'Simulated drivers'
-
- bool 'Simulated Ethernet ' CONFIG_SIMETH
- bool 'Simulated serial driver support' CONFIG_SIM_SERIAL
- if [ "$CONFIG_SCSI" != "n" ]; then
- bool 'Simulated SCSI disk' CONFIG_SCSI_SIM
- fi
- endmenu
+ source arch/ia64/hp/Config.in
fi
bool ' Spinlock debugging' CONFIG_DEBUG_SPINLOCK
bool ' Turn on compare-and-exchange bug checking (slow!)' CONFIG_IA64_DEBUG_CMPXCHG
bool ' Turn on irq debug checks (slow!)' CONFIG_IA64_DEBUG_IRQ
- bool ' Built-in Kernel Debugger support' CONFIG_KDB
- dep_tristate ' KDB modules' CONFIG_KDB_MODULES $CONFIG_KDB
- if [ "$CONFIG_KDB" = "y" ]; then
- bool ' KDB off by default' CONFIG_KDB_OFF
- comment ' Load all symbols for debugging is required for KDB'
- define_bool CONFIG_KALLSYMS y
- else
- bool ' Load all symbols for debugging' CONFIG_KALLSYMS
- fi
fi
endmenu
CONFIG_IDE=y
#
-# IDE, ATA and ATAPI Block devices
+# ATA and ATAPI Block devices
#
CONFIG_BLK_DEV_IDE=y
# CONFIG_BLK_DEV_ISAPNP is not set
# CONFIG_BLK_DEV_RZ1000 is not set
CONFIG_BLK_DEV_IDEPCI=y
+# CONFIG_BLK_DEV_OFFBOARD is not set
CONFIG_IDEPCI_SHARE_IRQ=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
-# CONFIG_BLK_DEV_OFFBOARD is not set
# CONFIG_IDEDMA_PCI_AUTO is not set
# CONFIG_IDEDMA_ONLYDISK is not set
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_IDEDMA_PCI_WIP is not set
-# CONFIG_BLK_DEV_IDEDMA_TIMEOUT is not set
# CONFIG_IDEDMA_NEW_DRIVE_LISTINGS is not set
-CONFIG_BLK_DEV_ADMA=y
# CONFIG_BLK_DEV_AEC62XX is not set
# CONFIG_AEC62XX_TUNING is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_BLK_DEV_TRM290 is not set
# CONFIG_BLK_DEV_VIA82CXXX is not set
# CONFIG_IDE_CHIPSETS is not set
-# CONFIG_IDEDMA_AUTO is not set
# CONFIG_IDEDMA_IVB is not set
+# CONFIG_IDEDMA_AUTO is not set
# CONFIG_DMA_NONPCI is not set
CONFIG_BLK_DEV_IDE_MODES=y
# CONFIG_BLK_DEV_ATARAID is not set
# USB Device Class drivers
#
# CONFIG_USB_AUDIO is not set
+# CONFIG_USB_EMI26 is not set
# CONFIG_USB_BLUETOOTH is not set
# CONFIG_USB_STORAGE is not set
# CONFIG_USB_STORAGE_DEBUG is not set
#
# ia64/platform/hp/Makefile
#
+# Copyright (C) 2002 Hewlett-Packard Co.
+# David Mosberger-Tang <davidm@hpl.hp.com>
# Copyright (C) 1999 Silicon Graphics, Inc.
# Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com)
#
obj-y := hpsim_console.o hpsim_irq.o hpsim_setup.o
obj-$(CONFIG_IA64_GENERIC) += hpsim_machvec.o
+obj-$(CONFIG_SIMETH) += simeth.o
+obj-$(CONFIG_SIM_SERIAL) += simserial.o
+obj-$(CONFIG_SCSI_SIM) += simscsi.o
+
clean::
include $(TOPDIR)/Rules.make
--- /dev/null
+/*
+ * Simulated Ethernet Driver
+ *
+ * Copyright (C) 1999-2001 Hewlett-Packard Co
+ * Stephane Eranian <eranian@hpl.hp.com>
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/if_ether.h>
+#include <linux/if_arp.h>
+#include <linux/skbuff.h>
+#include <linux/notifier.h>
+#include <asm/bitops.h>
+#include <asm/system.h>
+#include <asm/irq.h>
+
+#define SIMETH_RECV_MAX 10
+
+/*
+ * Maximum possible received frame for Ethernet.
+ * We preallocate an sk_buff of that size to avoid costly
+ * memcpy for temporary buffer into sk_buff. We do basically
+ * what's done in other drivers, like eepro with a ring.
+ * The difference is, of course, that we don't have real DMA !!!
+ */
+#define SIMETH_FRAME_SIZE ETH_FRAME_LEN
+
+
+#define SSC_NETDEV_PROBE 100
+#define SSC_NETDEV_SEND 101
+#define SSC_NETDEV_RECV 102
+#define SSC_NETDEV_ATTACH 103
+#define SSC_NETDEV_DETACH 104
+
+#define NETWORK_INTR 8
+
+struct simeth_local {
+ struct net_device_stats stats;
+ int simfd; /* descriptor in the simulator */
+};
+
+static int simeth_probe1(void);
+static int simeth_open(struct net_device *dev);
+static int simeth_close(struct net_device *dev);
+static int simeth_tx(struct sk_buff *skb, struct net_device *dev);
+static int simeth_rx(struct net_device *dev);
+static struct net_device_stats *simeth_get_stats(struct net_device *dev);
+static void simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs);
+static void set_multicast_list(struct net_device *dev);
+static int simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr);
+
+static char *simeth_version="0.3";
+
+/*
+ * This variable is used to establish a mapping between the Linux/ia64 kernel
+ * and the host linux kernel.
+ *
+ * As of today, we support only one card, even though most of the code
+ * is ready for many more. The mapping is then:
+ * linux/ia64 -> linux/x86
+ * eth0 -> eth1
+ *
+ * In the future, we some string operations, we could easily support up
+ * to 10 cards (0-9).
+ *
+ * The default mapping can be changed on the kernel command line by
+ * specifying simeth=ethX (or whatever string you want).
+ */
+static char *simeth_device="eth0"; /* default host interface to use */
+
+
+
+static volatile unsigned int card_count; /* how many cards "found" so far */
+static int simeth_debug; /* set to 1 to get debug information */
+
+/*
+ * Used to catch IFF_UP & IFF_DOWN events
+ */
+static struct notifier_block simeth_dev_notifier = {
+ simeth_device_event,
+ 0
+};
+
+
+/*
+ * Function used when using a kernel command line option.
+ *
+ * Format: simeth=interface_name (like eth0)
+ */
+static int __init
+simeth_setup(char *str)
+{
+ simeth_device = str;
+ return 1;
+}
+
+__setup("simeth=", simeth_setup);
+
+/*
+ * Function used to probe for simeth devices when not installed
+ * as a loadable module
+ */
+
+int __init
+simeth_probe (void)
+{
+ int r;
+
+ printk("simeth: v%s\n", simeth_version);
+
+ r = simeth_probe1();
+
+ if (r == 0) register_netdevice_notifier(&simeth_dev_notifier);
+
+ return r;
+}
+
+extern long ia64_ssc (long, long, long, long, int);
+extern void ia64_ssc_connect_irq (long intr, long irq);
+
+static inline int
+netdev_probe(char *name, unsigned char *ether)
+{
+ return ia64_ssc(__pa(name), __pa(ether), 0,0, SSC_NETDEV_PROBE);
+}
+
+
+static inline int
+netdev_connect(int irq)
+{
+ /* XXX Fix me
+ * this does not support multiple cards
+ * also no return value
+ */
+ ia64_ssc_connect_irq(NETWORK_INTR, irq);
+ return 0;
+}
+
+static inline int
+netdev_attach(int fd, int irq, unsigned int ipaddr)
+{
+ /* this puts the host interface in the right mode (start interupting) */
+ return ia64_ssc(fd, ipaddr, 0,0, SSC_NETDEV_ATTACH);
+}
+
+
+static inline int
+netdev_detach(int fd)
+{
+ /*
+ * inactivate the host interface (don't interrupt anymore) */
+ return ia64_ssc(fd, 0,0,0, SSC_NETDEV_DETACH);
+}
+
+static inline int
+netdev_send(int fd, unsigned char *buf, unsigned int len)
+{
+ return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_SEND);
+}
+
+static inline int
+netdev_read(int fd, unsigned char *buf, unsigned int len)
+{
+ return ia64_ssc(fd, __pa(buf), len, 0, SSC_NETDEV_RECV);
+}
+
+/*
+ * Function shared with module code, so cannot be in init section
+ *
+ * So far this function "detects" only one card (test_&_set) but could
+ * be extended easily.
+ *
+ * Return:
+ * - -ENODEV is no device found
+ * - -ENOMEM is no more memory
+ * - 0 otherwise
+ */
+static int
+simeth_probe1(void)
+{
+ unsigned char mac_addr[ETH_ALEN];
+ struct simeth_local *local;
+ struct net_device *dev;
+ int fd, i;
+
+ /*
+ * XXX Fix me
+ * let's support just one card for now
+ */
+ if (test_and_set_bit(0, &card_count))
+ return -ENODEV;
+
+ /*
+ * check with the simulator for the device
+ */
+ fd = netdev_probe(simeth_device, mac_addr);
+ if (fd == -1)
+ return -ENODEV;
+
+ dev = init_etherdev(NULL, sizeof(struct simeth_local));
+ if (!dev)
+ return -ENOMEM;
+
+ memcpy(dev->dev_addr, mac_addr, sizeof(mac_addr));
+
+ dev->irq = ia64_alloc_irq();
+
+ /*
+ * attach the interrupt in the simulator, this does enable interrupts
+ * until a netdev_attach() is called
+ */
+ netdev_connect(dev->irq);
+
+ memset(dev->priv, 0, sizeof(struct simeth_local));
+
+ local = dev->priv;
+ local->simfd = fd; /* keep track of underlying file descriptor */
+
+ dev->open = simeth_open;
+ dev->stop = simeth_close;
+ dev->hard_start_xmit = simeth_tx;
+ dev->get_stats = simeth_get_stats;
+ dev->set_multicast_list = set_multicast_list; /* no yet used */
+
+ /* Fill in the fields of the device structure with ethernet-generic values. */
+ ether_setup(dev);
+
+ printk("%s: hosteth=%s simfd=%d, HwAddr", dev->name, simeth_device, local->simfd);
+ for(i = 0; i < ETH_ALEN; i++) {
+ printk(" %2.2x", dev->dev_addr[i]);
+ }
+ printk(", IRQ %d\n", dev->irq);
+
+ return 0;
+}
+
+/*
+ * actually binds the device to an interrupt vector
+ */
+static int
+simeth_open(struct net_device *dev)
+{
+ if (request_irq(dev->irq, simeth_interrupt, 0, "simeth", dev)) {
+ printk ("simeth: unable to get IRQ %d.\n", dev->irq);
+ return -EAGAIN;
+ }
+
+ netif_start_queue(dev);
+
+ return 0;
+}
+
+/* copied from lapbether.c */
+static __inline__ int dev_is_ethdev(struct net_device *dev)
+{
+ return ( dev->type == ARPHRD_ETHER && strncmp(dev->name, "dummy", 5));
+}
+
+
+/*
+ * Handler for IFF_UP or IFF_DOWN
+ *
+ * The reason for that is that we don't want to be interrupted when the
+ * interface is down. There is no way to unconnect in the simualtor. Instead
+ * we use this function to shutdown packet processing in the frame filter
+ * in the simulator. Thus no interrupts are generated
+ *
+ *
+ * That's also the place where we pass the IP address of this device to the
+ * simulator so that that we can start filtering packets for it
+ *
+ * There may be a better way of doing this, but I don't know which yet.
+ */
+static int
+simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr)
+{
+ struct net_device *dev = (struct net_device *)ptr;
+ struct simeth_local *local;
+ struct in_device *in_dev;
+ struct in_ifaddr **ifap = NULL;
+ struct in_ifaddr *ifa = NULL;
+ int r;
+
+
+ if ( ! dev ) {
+ printk(KERN_WARNING "simeth_device_event dev=0\n");
+ return NOTIFY_DONE;
+ }
+
+ if ( event != NETDEV_UP && event != NETDEV_DOWN ) return NOTIFY_DONE;
+
+ /*
+ * Check whether or not it's for an ethernet device
+ *
+ * XXX Fixme: This works only as long as we support one
+ * type of ethernet device.
+ */
+ if ( !dev_is_ethdev(dev) ) return NOTIFY_DONE;
+
+ if ((in_dev=dev->ip_ptr) != NULL) {
+ for (ifap=&in_dev->ifa_list; (ifa=*ifap) != NULL; ifap=&ifa->ifa_next)
+ if (strcmp(dev->name, ifa->ifa_label) == 0) break;
+ }
+ if ( ifa == NULL ) {
+ printk("simeth_open: can't find device %s's ifa\n", dev->name);
+ return NOTIFY_DONE;
+ }
+
+ printk("simeth_device_event: %s ipaddr=0x%x\n", dev->name, htonl(ifa->ifa_local));
+
+ /*
+ * XXX Fix me
+ * if the device was up, and we're simply reconfiguring it, not sure
+ * we get DOWN then UP.
+ */
+
+ local = dev->priv;
+ /* now do it for real */
+ r = event == NETDEV_UP ?
+ netdev_attach(local->simfd, dev->irq, htonl(ifa->ifa_local)):
+ netdev_detach(local->simfd);
+
+ printk("simeth: netdev_attach/detach: event=%s ->%d\n", event == NETDEV_UP ? "attach":"detach", r);
+
+ return NOTIFY_DONE;
+}
+
+static int
+simeth_close(struct net_device *dev)
+{
+ netif_stop_queue(dev);
+
+ free_irq(dev->irq, dev);
+
+ return 0;
+}
+
+/*
+ * Only used for debug
+ */
+static void
+frame_print(unsigned char *from, unsigned char *frame, int len)
+{
+ int i;
+
+ printk("%s: (%d) %02x", from, len, frame[0] & 0xff);
+ for(i=1; i < 6; i++ ) {
+ printk(":%02x", frame[i] &0xff);
+ }
+ printk(" %2x", frame[6] &0xff);
+ for(i=7; i < 12; i++ ) {
+ printk(":%02x", frame[i] &0xff);
+ }
+ printk(" [%02x%02x]\n", frame[12], frame[13]);
+
+ for(i=14; i < len; i++ ) {
+ printk("%02x ", frame[i] &0xff);
+ if ( (i%10)==0) printk("\n");
+ }
+ printk("\n");
+}
+
+
+/*
+ * Function used to transmit of frame, very last one on the path before
+ * going to the simulator.
+ */
+static int
+simeth_tx(struct sk_buff *skb, struct net_device *dev)
+{
+ struct simeth_local *local = (struct simeth_local *)dev->priv;
+
+#if 0
+ /* ensure we have at least ETH_ZLEN bytes (min frame size) */
+ unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+ /* Where do the extra padding bytes comes from inthe skbuff ? */
+#else
+ /* the real driver in the host system is going to take care of that
+ * or maybe it's the NIC itself.
+ */
+ unsigned int length = skb->len;
+#endif
+
+ local->stats.tx_bytes += skb->len;
+ local->stats.tx_packets++;
+
+
+ if (simeth_debug > 5) frame_print("simeth_tx", skb->data, length);
+
+ netdev_send(local->simfd, skb->data, length);
+
+ /*
+ * we are synchronous on write, so we don't simulate a
+ * trasnmit complete interrupt, thus we don't need to arm a tx
+ */
+
+ dev_kfree_skb(skb);
+ return 0;
+}
+
+static inline struct sk_buff *
+make_new_skb(struct net_device *dev)
+{
+ struct sk_buff *nskb;
+
+ /*
+ * The +2 is used to make sure that the IP header is nicely
+ * aligned (on 4byte boundary I assume 14+2=16)
+ */
+ nskb = dev_alloc_skb(SIMETH_FRAME_SIZE + 2);
+ if ( nskb == NULL ) {
+ printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
+ return NULL;
+ }
+ nskb->dev = dev;
+
+ skb_reserve(nskb, 2); /* Align IP on 16 byte boundaries */
+
+ skb_put(nskb,SIMETH_FRAME_SIZE);
+
+ return nskb;
+}
+
+/*
+ * called from interrupt handler to process a received frame
+ */
+static int
+simeth_rx(struct net_device *dev)
+{
+ struct simeth_local *local;
+ struct sk_buff *skb;
+ int len;
+ int rcv_count = SIMETH_RECV_MAX;
+
+ local = (struct simeth_local *)dev->priv;
+ /*
+ * the loop concept has been borrowed from other drivers
+ * looks to me like it's a throttling thing to avoid pushing to many
+ * packets at one time into the stack. Making sure we can process them
+ * upstream and make forward progress overall
+ */
+ do {
+ if ( (skb=make_new_skb(dev)) == NULL ) {
+ printk(KERN_NOTICE "%s: memory squeeze. dropping packet.\n", dev->name);
+ local->stats.rx_dropped++;
+ return 0;
+ }
+ /*
+ * Read only one frame at a time
+ */
+ len = netdev_read(local->simfd, skb->data, SIMETH_FRAME_SIZE);
+ if ( len == 0 ) {
+ if ( simeth_debug > 0 ) printk(KERN_WARNING "%s: count=%d netdev_read=0\n", dev->name, SIMETH_RECV_MAX-rcv_count);
+ break;
+ }
+#if 0
+ /*
+ * XXX Fix me
+ * Should really do a csum+copy here
+ */
+ memcpy(skb->data, frame, len);
+#endif
+ skb->protocol = eth_type_trans(skb, dev);
+
+ if ( simeth_debug > 6 ) frame_print("simeth_rx", skb->data, len);
+
+ /*
+ * push the packet up & trigger software interrupt
+ */
+ netif_rx(skb);
+
+ local->stats.rx_packets++;
+ local->stats.rx_bytes += len;
+
+ } while ( --rcv_count );
+
+ return len; /* 0 = nothing left to read, otherwise, we can try again */
+}
+
+/*
+ * Interrupt handler (Yes, we can do it too !!!)
+ */
+static void
+simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+ struct net_device *dev = dev_id;
+
+ if ( dev == NULL ) {
+ printk(KERN_WARNING "simeth: irq %d for unknown device\n", irq);
+ return;
+ }
+
+ /*
+ * very simple loop because we get interrupts only when receving
+ */
+ while (simeth_rx(dev));
+}
+
+static struct net_device_stats *
+simeth_get_stats(struct net_device *dev)
+{
+ struct simeth_local *local = (struct simeth_local *) dev->priv;
+
+ return &local->stats;
+}
+
+/* fake multicast ability */
+static void
+set_multicast_list(struct net_device *dev)
+{
+ printk(KERN_WARNING "%s: set_multicast_list called\n", dev->name);
+}
+
+#ifdef CONFIG_NET_FASTROUTE
+static int
+simeth_accept_fastpath(struct net_device *dev, struct dst_entry *dst)
+{
+ printk(KERN_WARNING "%s: simeth_accept_fastpath called\n", dev->name);
+ return -1;
+}
+#endif
+
+__initcall(simeth_probe);
--- /dev/null
+/*
+ * Simulated SCSI driver.
+ *
+ * Copyright (C) 1999, 2001-2002 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ * Stephane Eranian <eranian@hpl.hp.com>
+ *
+ * 02/01/15 David Mosberger Updated for v2.5.1
+ * 99/12/18 David Mosberger Added support for READ10/WRITE10 needed by linux v2.3.33
+ */
+#include <linux/config.h>
+#include <linux/blk.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/timer.h>
+
+#include <scsi/scsi.h>
+
+#include <asm/irq.h>
+
+#include "../drivers/scsi/scsi.h"
+#include "../drivers/scsi/sd.h"
+#include "../drivers/scsi/hosts.h"
+#include "simscsi.h"
+
+#define DEBUG_SIMSCSI 1
+
+/* Simulator system calls: */
+
+#define SSC_OPEN 50
+#define SSC_CLOSE 51
+#define SSC_READ 52
+#define SSC_WRITE 53
+#define SSC_GET_COMPLETION 54
+#define SSC_WAIT_COMPLETION 55
+
+#define SSC_WRITE_ACCESS 2
+#define SSC_READ_ACCESS 1
+
+#if DEBUG_SIMSCSI
+ int simscsi_debug;
+# define DBG simscsi_debug
+#else
+# define DBG 0
+#endif
+
+static struct Scsi_Host *host;
+
+static void simscsi_interrupt (unsigned long val);
+DECLARE_TASKLET(simscsi_tasklet, simscsi_interrupt, 0);
+
+struct disk_req {
+ unsigned long addr;
+ unsigned len;
+};
+
+struct disk_stat {
+ int fd;
+ unsigned count;
+};
+
+extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
+
+static int desc[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
+
+static struct queue_entry {
+ Scsi_Cmnd *sc;
+} queue[SIMSCSI_REQ_QUEUE_LEN];
+
+static int rd, wr;
+static atomic_t num_reqs = ATOMIC_INIT(0);
+
+/* base name for default disks */
+static char *simscsi_root = DEFAULT_SIMSCSI_ROOT;
+
+#define MAX_ROOT_LEN 128
+
+/*
+ * used to setup a new base for disk images
+ * to use /foo/bar/disk[a-z] as disk images
+ * you have to specify simscsi=/foo/bar/disk on the command line
+ */
+static int __init
+simscsi_setup (char *s)
+{
+ /* XXX Fix me we may need to strcpy() ? */
+ if (strlen(s) > MAX_ROOT_LEN) {
+ printk("simscsi_setup: prefix too long---using default %s\n", simscsi_root);
+ }
+ simscsi_root = s;
+ return 1;
+}
+
+__setup("simscsi=", simscsi_setup);
+
+static void
+simscsi_interrupt (unsigned long val)
+{
+ Scsi_Cmnd *sc;
+
+ while ((sc = queue[rd].sc) != 0) {
+ atomic_dec(&num_reqs);
+ queue[rd].sc = 0;
+ if (DBG)
+ printk("simscsi_interrupt: done with %ld\n", sc->serial_number);
+ (*sc->scsi_done)(sc);
+ rd = (rd + 1) % SIMSCSI_REQ_QUEUE_LEN;
+ }
+}
+
+int
+simscsi_detect (Scsi_Host_Template *templ)
+{
+ templ->proc_name = "simscsi";
+ host = scsi_register(templ, 0);
+ return 1; /* fake one SCSI host adapter */
+}
+
+int
+simscsi_release (struct Scsi_Host *host)
+{
+ return 0; /* this is easy... */
+}
+
+const char *
+simscsi_info (struct Scsi_Host *host)
+{
+ return "simulated SCSI host adapter";
+}
+
+int
+simscsi_abort (Scsi_Cmnd *cmd)
+{
+ printk ("simscsi_abort: unimplemented\n");
+ return SCSI_ABORT_SUCCESS;
+}
+
+int
+simscsi_reset (Scsi_Cmnd *cmd, unsigned int reset_flags)
+{
+ printk ("simscsi_reset: unimplemented\n");
+ return SCSI_RESET_SUCCESS;
+}
+
+int
+simscsi_biosparam (Disk *disk, kdev_t n, int ip[])
+{
+ int size = disk->capacity;
+
+ ip[0] = 64;
+ ip[1] = 32;
+ ip[2] = size >> 11;
+ return 0;
+}
+
+static void
+simscsi_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset, unsigned long len)
+{
+ struct disk_stat stat;
+ struct disk_req req;
+
+ req.addr = __pa(sc->request_buffer);
+ req.len = len; /* # of bytes to transfer */
+
+ if (sc->request_bufflen < req.len)
+ return;
+
+ stat.fd = desc[sc->target];
+ if (DBG)
+ printk("simscsi_%s @ %lx (off %lx)\n",
+ mode == SSC_READ ? "read":"write", req.addr, offset);
+ ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
+ ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+
+ if (stat.count == req.len) {
+ sc->result = GOOD;
+ } else {
+ sc->result = DID_ERROR << 16;
+ }
+}
+
+static void
+simscsi_sg_readwrite (Scsi_Cmnd *sc, int mode, unsigned long offset)
+{
+ int list_len = sc->use_sg;
+ struct scatterlist *sl = (struct scatterlist *)sc->buffer;
+ struct disk_stat stat;
+ struct disk_req req;
+
+ stat.fd = desc[sc->target];
+
+ while (list_len) {
+ req.addr = __pa(page_address(sl->page) + sl->offset);
+ req.len = sl->length;
+ if (DBG)
+ printk("simscsi_sg_%s @ %lx (off %lx) use_sg=%d len=%d\n",
+ mode == SSC_READ ? "read":"write", req.addr, offset,
+ list_len, sl->length);
+ ia64_ssc(stat.fd, 1, __pa(&req), offset, mode);
+ ia64_ssc(__pa(&stat), 0, 0, 0, SSC_WAIT_COMPLETION);
+
+ /* should not happen in our case */
+ if (stat.count != req.len) {
+ sc->result = DID_ERROR << 16;
+ return;
+ }
+ offset += sl->length;
+ sl++;
+ list_len--;
+ }
+ sc->result = GOOD;
+}
+
+/*
+ * function handling both READ_6/WRITE_6 (non-scatter/gather mode)
+ * commands.
+ * Added 02/26/99 S.Eranian
+ */
+static void
+simscsi_readwrite6 (Scsi_Cmnd *sc, int mode)
+{
+ unsigned long offset;
+
+ offset = (((sc->cmnd[1] & 0x1f) << 16) | (sc->cmnd[2] << 8) | sc->cmnd[3])*512;
+ if (sc->use_sg > 0)
+ simscsi_sg_readwrite(sc, mode, offset);
+ else
+ simscsi_readwrite(sc, mode, offset, sc->cmnd[4]*512);
+}
+
+
+static void
+simscsi_readwrite10 (Scsi_Cmnd *sc, int mode)
+{
+ unsigned long offset;
+
+ offset = ( (sc->cmnd[2] << 24) | (sc->cmnd[3] << 16)
+ | (sc->cmnd[4] << 8) | (sc->cmnd[5] << 0))*512;
+ if (sc->use_sg > 0)
+ simscsi_sg_readwrite(sc, mode, offset);
+ else
+ simscsi_readwrite(sc, mode, offset, ((sc->cmnd[7] << 8) | sc->cmnd[8])*512);
+}
+
+int
+simscsi_queuecommand (Scsi_Cmnd *sc, void (*done)(Scsi_Cmnd *))
+{
+ char fname[MAX_ROOT_LEN+16];
+ char *buf;
+#if DEBUG_SIMSCSI
+ register long sp asm ("sp");
+
+ if (DBG)
+ printk("simscsi_queuecommand: target=%d,cmnd=%u,sc=%lu,sp=%lx,done=%p\n",
+ sc->target, sc->cmnd[0], sc->serial_number, sp, done);
+#endif
+
+ sc->result = DID_BAD_TARGET << 16;
+ sc->scsi_done = done;
+ if (sc->target <= 7 && sc->lun == 0) {
+ switch (sc->cmnd[0]) {
+ case INQUIRY:
+ if (sc->request_bufflen < 35) {
+ break;
+ }
+ sprintf (fname, "%s%c", simscsi_root, 'a' + sc->target);
+ desc[sc->target] = ia64_ssc (__pa(fname), SSC_READ_ACCESS|SSC_WRITE_ACCESS,
+ 0, 0, SSC_OPEN);
+ if (desc[sc->target] < 0) {
+ /* disk doesn't exist... */
+ break;
+ }
+ buf = sc->request_buffer;
+ buf[0] = 0; /* magnetic disk */
+ buf[1] = 0; /* not a removable medium */
+ buf[2] = 2; /* SCSI-2 compliant device */
+ buf[3] = 2; /* SCSI-2 response data format */
+ buf[4] = 31; /* additional length (bytes) */
+ buf[5] = 0; /* reserved */
+ buf[6] = 0; /* reserved */
+ buf[7] = 0; /* various flags */
+ memcpy(buf + 8, "HP SIMULATED DISK 0.00", 28);
+ sc->result = GOOD;
+ break;
+
+ case TEST_UNIT_READY:
+ sc->result = GOOD;
+ break;
+
+ case READ_6:
+ if (desc[sc->target] < 0 )
+ break;
+ simscsi_readwrite6(sc, SSC_READ);
+ break;
+
+ case READ_10:
+ if (desc[sc->target] < 0 )
+ break;
+ simscsi_readwrite10(sc, SSC_READ);
+ break;
+
+ case WRITE_6:
+ if (desc[sc->target] < 0)
+ break;
+ simscsi_readwrite6(sc, SSC_WRITE);
+ break;
+
+ case WRITE_10:
+ if (desc[sc->target] < 0)
+ break;
+ simscsi_readwrite10(sc, SSC_WRITE);
+ break;
+
+
+ case READ_CAPACITY:
+ if (desc[sc->target] < 0 || sc->request_bufflen < 8) {
+ break;
+ }
+ buf = sc->request_buffer;
+
+ /* pretend to be a 1GB disk (partition table contains real stuff): */
+ buf[0] = 0x00;
+ buf[1] = 0x1f;
+ buf[2] = 0xff;
+ buf[3] = 0xff;
+ /* set block size of 512 bytes: */
+ buf[4] = 0;
+ buf[5] = 0;
+ buf[6] = 2;
+ buf[7] = 0;
+ sc->result = GOOD;
+ break;
+
+ case MODE_SENSE:
+ printk("MODE_SENSE\n");
+ break;
+
+ case START_STOP:
+ printk("START_STOP\n");
+ break;
+
+ default:
+ panic("simscsi: unknown SCSI command %u\n", sc->cmnd[0]);
+ }
+ }
+ if (sc->result == DID_BAD_TARGET) {
+ sc->result |= DRIVER_SENSE << 24;
+ sc->sense_buffer[0] = 0x70;
+ sc->sense_buffer[2] = 0x00;
+ }
+ if (atomic_read(&num_reqs) >= SIMSCSI_REQ_QUEUE_LEN) {
+ panic("Attempt to queue command while command is pending!!");
+ }
+ atomic_inc(&num_reqs);
+ queue[wr].sc = sc;
+ wr = (wr + 1) % SIMSCSI_REQ_QUEUE_LEN;
+
+ tasklet_schedule(&simscsi_tasklet);
+ return 0;
+}
+
+
+static Scsi_Host_Template driver_template = SIMSCSI;
+
+#define __initcall(fn) late_initcall(fn)
+
+#include "../drivers/scsi/scsi_module.c"
--- /dev/null
+/*
+ * Simulated SCSI driver.
+ *
+ * Copyright (C) 1999 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+#ifndef SIMSCSI_H
+#define SIMSCSI_H
+
+#define SIMSCSI_REQ_QUEUE_LEN 64
+
+#define DEFAULT_SIMSCSI_ROOT "/var/ski-disks/sd"
+
+extern int simscsi_detect (Scsi_Host_Template *);
+extern int simscsi_release (struct Scsi_Host *);
+extern const char *simscsi_info (struct Scsi_Host *);
+extern int simscsi_queuecommand (Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+extern int simscsi_abort (Scsi_Cmnd *);
+extern int simscsi_reset (Scsi_Cmnd *, unsigned int);
+extern int simscsi_biosparam (Disk *, kdev_t, int[]);
+
+#define SIMSCSI { \
+ detect: simscsi_detect, \
+ release: simscsi_release, \
+ info: simscsi_info, \
+ queuecommand: simscsi_queuecommand, \
+ abort: simscsi_abort, \
+ reset: simscsi_reset, \
+ bios_param: simscsi_biosparam, \
+ can_queue: SIMSCSI_REQ_QUEUE_LEN, \
+ this_id: -1, \
+ sg_tablesize: SG_ALL, \
+ cmd_per_lun: SIMSCSI_REQ_QUEUE_LEN, \
+ present: 0, \
+ unchecked_isa_dma: 0, \
+ use_clustering: DISABLE_CLUSTERING \
+}
+
+#endif /* SIMSCSI_H */
--- /dev/null
+/*
+ * Simulated Serial Driver (fake serial)
+ *
+ * This driver is mostly used for bringup purposes and will go away.
+ * It has a strong dependency on the system console. All outputs
+ * are rerouted to the same facility as the one used by printk which, in our
+ * case means sys_sim.c console (goes via the simulator). The code hereafter
+ * is completely leveraged from the serial.c driver.
+ *
+ * Copyright (C) 1999-2000 Hewlett-Packard Co
+ * Copyright (C) 1999 Stephane Eranian <eranian@hpl.hp.com>
+ * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * 02/04/00 D. Mosberger Merged in serial.c bug fixes in rs_close().
+ * 02/25/00 D. Mosberger Synced up with 2.3.99pre-5 version of serial.c.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/malloc.h>
+#include <linux/console.h>
+#include <linux/module.h>
+#include <linux/serial.h>
+#include <linux/serialP.h>
+
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+
+#ifdef CONFIG_KDB
+# include <linux/kdb.h>
+#endif
+
+#undef SIMSERIAL_DEBUG /* define this to get some debug information */
+
+#define KEYBOARD_INTR 3 /* must match with simulator! */
+
+#define NR_PORTS 1 /* only one port for now */
+#define SERIAL_INLINE 1
+
+#ifdef SERIAL_INLINE
+#define _INLINE_ inline
+#endif
+
+#ifndef MIN
+#define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? SA_SHIRQ : SA_INTERRUPT)
+
+#define SSC_GETCHAR 21
+
+extern long ia64_ssc (long, long, long, long, int);
+extern void ia64_ssc_connect_irq (long intr, long irq);
+
+static char *serial_name = "SimSerial driver";
+static char *serial_version = "0.6";
+
+/*
+ * This has been extracted from asm/serial.h. We need one eventually but
+ * I don't know exactly what we're going to put in it so just fake one
+ * for now.
+ */
+#define BASE_BAUD ( 1843200 / 16 )
+
+#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
+
+/*
+ * Most of the values here are meaningless to this particular driver.
+ * However some values must be preserved for the code (leveraged from serial.c
+ * to work correctly).
+ * port must not be 0
+ * type must not be UNKNOWN
+ * So I picked arbitrary (guess from where?) values instead
+ */
+static struct serial_state rs_table[NR_PORTS]={
+ /* UART CLK PORT IRQ FLAGS */
+ { 0, BASE_BAUD, 0x3F8, 0, STD_COM_FLAGS,0,PORT_16550 } /* ttyS0 */
+};
+
+/*
+ * Just for the fun of it !
+ */
+static struct serial_uart_config uart_config[] = {
+ { "unknown", 1, 0 },
+ { "8250", 1, 0 },
+ { "16450", 1, 0 },
+ { "16550", 1, 0 },
+ { "16550A", 16, UART_CLEAR_FIFO | UART_USE_FIFO },
+ { "cirrus", 1, 0 },
+ { "ST16650", 1, UART_CLEAR_FIFO | UART_STARTECH },
+ { "ST16650V2", 32, UART_CLEAR_FIFO | UART_USE_FIFO |
+ UART_STARTECH },
+ { "TI16750", 64, UART_CLEAR_FIFO | UART_USE_FIFO},
+ { 0, 0}
+};
+
+static struct tty_driver serial_driver, callout_driver;
+static int serial_refcount;
+
+static struct async_struct *IRQ_ports[NR_IRQS];
+static struct tty_struct *serial_table[NR_PORTS];
+static struct termios *serial_termios[NR_PORTS];
+static struct termios *serial_termios_locked[NR_PORTS];
+
+static struct console *console;
+
+static unsigned char *tmp_buf;
+static DECLARE_MUTEX(tmp_buf_sem);
+
+extern struct console *console_drivers; /* from kernel/printk.c */
+
+/*
+ * ------------------------------------------------------------
+ * rs_stop() and rs_start()
+ *
+ * This routines are called before setting or resetting tty->stopped.
+ * They enable or disable transmitter interrupts, as necessary.
+ * ------------------------------------------------------------
+ */
+static void rs_stop(struct tty_struct *tty)
+{
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_stop: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
+ tty->stopped, tty->hw_stopped, tty->flow_stopped);
+#endif
+
+}
+
+static void rs_start(struct tty_struct *tty)
+{
+#if SIMSERIAL_DEBUG
+ printk("rs_start: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
+ tty->stopped, tty->hw_stopped, tty->flow_stopped);
+#endif
+}
+
+static void receive_chars(struct tty_struct *tty, struct pt_regs *regs)
+{
+ unsigned char ch;
+ static unsigned char seen_esc = 0;
+
+ while ( (ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR)) ) {
+ if ( ch == 27 && seen_esc == 0 ) {
+ seen_esc = 1;
+ continue;
+ } else {
+ if ( seen_esc==1 && ch == 'O' ) {
+ seen_esc = 2;
+ continue;
+ } else if ( seen_esc == 2 ) {
+ if ( ch == 'P' ) show_state(); /* F1 key */
+ if ( ch == 'Q' ) show_buffers(); /* F2 key */
+#ifdef CONFIG_KDB
+ if ( ch == 'S' )
+ kdb(KDB_REASON_KEYBOARD, 0, (kdb_eframe_t) regs);
+#endif
+
+ seen_esc = 0;
+ continue;
+ }
+ }
+ seen_esc = 0;
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) break;
+
+ *tty->flip.char_buf_ptr = ch;
+
+ *tty->flip.flag_buf_ptr = 0;
+
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ tty->flip.count++;
+ }
+ tty_flip_buffer_push(tty);
+}
+
+/*
+ * This is the serial driver's interrupt routine for a single port
+ */
+static void rs_interrupt_single(int irq, void *dev_id, struct pt_regs * regs)
+{
+ struct async_struct * info;
+
+ /*
+ * I don't know exactly why they don't use the dev_id opaque data
+ * pointer instead of this extra lookup table
+ */
+ info = IRQ_ports[irq];
+ if (!info || !info->tty) {
+ printk("simrs_interrupt_single: info|tty=0 info=%p problem\n", info);
+ return;
+ }
+ /*
+ * pretty simple in our case, because we only get interrupts
+ * on inbound traffic
+ */
+ receive_chars(info->tty, regs);
+}
+
+/*
+ * -------------------------------------------------------------------
+ * Here ends the serial interrupt routines.
+ * -------------------------------------------------------------------
+ */
+
+#if 0
+/*
+ * not really used in our situation so keep them commented out for now
+ */
+static DECLARE_TASK_QUEUE(tq_serial); /* used to be at the top of the file */
+static void do_serial_bh(void)
+{
+ run_task_queue(&tq_serial);
+ printk("do_serial_bh: called\n");
+}
+#endif
+
+static void do_softint(void *private_)
+{
+ printk("simserial: do_softint called\n");
+}
+
+static void rs_put_char(struct tty_struct *tty, unsigned char ch)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (!tty || !info->xmit.buf) return;
+
+ save_flags(flags); cli();
+ if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {
+ restore_flags(flags);
+ return;
+ }
+ info->xmit.buf[info->xmit.head] = ch;
+ info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
+ restore_flags(flags);
+}
+
+static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
+{
+ int count;
+ unsigned long flags;
+
+ save_flags(flags); cli();
+
+ if (info->x_char) {
+ char c = info->x_char;
+
+ console->write(console, &c, 1);
+
+ info->state->icount.tx++;
+ info->x_char = 0;
+
+ goto out;
+ }
+
+ if (info->xmit.head == info->xmit.tail || info->tty->stopped || info->tty->hw_stopped) {
+#ifdef SIMSERIAL_DEBUG
+ printk("transmit_chars: head=%d, tail=%d, stopped=%d\n",
+ info->xmit.head, info->xmit.tail, info->tty->stopped);
+#endif
+ goto out;
+ }
+ /*
+ * We removed the loop and try to do it in to chunks. We need
+ * 2 operations maximum because it's a ring buffer.
+ *
+ * First from current to tail if possible.
+ * Then from the beginning of the buffer until necessary
+ */
+
+ count = MIN(CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),
+ SERIAL_XMIT_SIZE - info->xmit.tail);
+ console->write(console, info->xmit.buf+info->xmit.tail, count);
+
+ info->xmit.tail = (info->xmit.tail+count) & (SERIAL_XMIT_SIZE-1);
+
+ /*
+ * We have more at the beginning of the buffer
+ */
+ count = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ if (count) {
+ console->write(console, info->xmit.buf, count);
+ info->xmit.tail += count;
+ }
+out:
+ restore_flags(flags);
+}
+
+static void rs_flush_chars(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ if (info->xmit.head == info->xmit.tail || tty->stopped || tty->hw_stopped ||
+ !info->xmit.buf)
+ return;
+
+ transmit_chars(info, NULL);
+}
+
+
+static int rs_write(struct tty_struct * tty, int from_user,
+ const unsigned char *buf, int count)
+{
+ int c, ret = 0;
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ if (!tty || !info->xmit.buf || !tmp_buf) return 0;
+
+ save_flags(flags);
+ if (from_user) {
+ down(&tmp_buf_sem);
+ while (1) {
+ int c1;
+ c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ if (count < c)
+ c = count;
+ if (c <= 0)
+ break;
+
+ c -= copy_from_user(tmp_buf, buf, c);
+ if (!c) {
+ if (!ret)
+ ret = -EFAULT;
+ break;
+ }
+ cli();
+ c1 = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ if (c1 < c)
+ c = c1;
+ memcpy(info->xmit.buf + info->xmit.head, tmp_buf, c);
+ info->xmit.head = ((info->xmit.head + c) &
+ (SERIAL_XMIT_SIZE-1));
+ restore_flags(flags);
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ up(&tmp_buf_sem);
+ } else {
+ cli();
+ while (1) {
+ c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+ if (count < c)
+ c = count;
+ if (c <= 0) {
+ break;
+ }
+ memcpy(info->xmit.buf + info->xmit.head, buf, c);
+ info->xmit.head = ((info->xmit.head + c) &
+ (SERIAL_XMIT_SIZE-1));
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ restore_flags(flags);
+ }
+ /*
+ * Hey, we transmit directly from here in our case
+ */
+ if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE)
+ && !tty->stopped && !tty->hw_stopped) {
+ transmit_chars(info, NULL);
+ }
+ return ret;
+}
+
+static int rs_write_room(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+}
+
+static int rs_chars_in_buffer(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
+}
+
+static void rs_flush_buffer(struct tty_struct *tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+ unsigned long flags;
+
+ save_flags(flags); cli();
+ info->xmit.head = info->xmit.tail = 0;
+ restore_flags(flags);
+
+ wake_up_interruptible(&tty->write_wait);
+
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+ tty->ldisc.write_wakeup)
+ (tty->ldisc.write_wakeup)(tty);
+}
+
+/*
+ * This function is used to send a high-priority XON/XOFF character to
+ * the device
+ */
+static void rs_send_xchar(struct tty_struct *tty, char ch)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ info->x_char = ch;
+ if (ch) {
+ /*
+ * I guess we could call console->write() directly but
+ * let's do that for now.
+ */
+ transmit_chars(info, NULL);
+ }
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_throttle()
+ *
+ * This routine is called by the upper-layer tty layer to signal that
+ * incoming characters should be throttled.
+ * ------------------------------------------------------------
+ */
+static void rs_throttle(struct tty_struct * tty)
+{
+ if (I_IXOFF(tty)) rs_send_xchar(tty, STOP_CHAR(tty));
+
+ printk("simrs_throttle called\n");
+}
+
+static void rs_unthrottle(struct tty_struct * tty)
+{
+ struct async_struct *info = (struct async_struct *)tty->driver_data;
+
+ if (I_IXOFF(tty)) {
+ if (info->x_char)
+ info->x_char = 0;
+ else
+ rs_send_xchar(tty, START_CHAR(tty));
+ }
+ printk("simrs_unthrottle called\n");
+}
+
+/*
+ * rs_break() --- routine which turns the break handling on or off
+ */
+static void rs_break(struct tty_struct *tty, int break_state)
+{
+}
+
+static int rs_ioctl(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg)
+{
+ if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
+ (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
+ (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+ }
+
+ switch (cmd) {
+ case TIOCMGET:
+ printk("rs_ioctl: TIOCMGET called\n");
+ return -EINVAL;
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ printk("rs_ioctl: TIOCMBIS/BIC/SET called\n");
+ return -EINVAL;
+ case TIOCGSERIAL:
+ printk("simrs_ioctl TIOCGSERIAL called\n");
+ return 0;
+ case TIOCSSERIAL:
+ printk("simrs_ioctl TIOCSSERIAL called\n");
+ return 0;
+ case TIOCSERCONFIG:
+ printk("rs_ioctl: TIOCSERCONFIG called\n");
+ return -EINVAL;
+
+ case TIOCSERGETLSR: /* Get line status register */
+ printk("rs_ioctl: TIOCSERGETLSR called\n");
+ return -EINVAL;
+
+ case TIOCSERGSTRUCT:
+ printk("rs_ioctl: TIOCSERGSTRUCT called\n");
+#if 0
+ if (copy_to_user((struct async_struct *) arg,
+ info, sizeof(struct async_struct)))
+ return -EFAULT;
+#endif
+ 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:
+ printk("rs_ioctl: TIOCMIWAIT: called\n");
+ return 0;
+ /*
+ * 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:
+ printk("rs_ioctl: TIOCGICOUNT called\n");
+ return 0;
+
+ case TIOCSERGWILD:
+ case TIOCSERSWILD:
+ /* "setserial -W" is called in Debian boot */
+ printk ("TIOCSER?WILD ioctl obsolete, ignored.\n");
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+
+static void rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+ unsigned int cflag = tty->termios->c_cflag;
+
+ if ( (cflag == old_termios->c_cflag)
+ && ( RELEVANT_IFLAG(tty->termios->c_iflag)
+ == RELEVANT_IFLAG(old_termios->c_iflag)))
+ return;
+
+
+ /* Handle turning off CRTSCTS */
+ if ((old_termios->c_cflag & CRTSCTS) &&
+ !(tty->termios->c_cflag & CRTSCTS)) {
+ tty->hw_stopped = 0;
+ rs_start(tty);
+ }
+}
+/*
+ * This routine will shutdown a serial port; interrupts are disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void shutdown(struct async_struct * info)
+{
+ unsigned long flags;
+ struct serial_state *state;
+ int retval;
+
+ if (!(info->flags & ASYNC_INITIALIZED)) return;
+
+ state = info->state;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("Shutting down serial port %d (irq %d)....", info->line,
+ state->irq);
+#endif
+
+ save_flags(flags); cli(); /* Disable interrupts */
+
+ /*
+ * First unlink the serial port from the IRQ chain...
+ */
+ if (info->next_port)
+ info->next_port->prev_port = info->prev_port;
+ if (info->prev_port)
+ info->prev_port->next_port = info->next_port;
+ else
+ IRQ_ports[state->irq] = info->next_port;
+
+ /*
+ * Free the IRQ, if necessary
+ */
+ if (state->irq && (!IRQ_ports[state->irq] ||
+ !IRQ_ports[state->irq]->next_port)) {
+ if (IRQ_ports[state->irq]) {
+ free_irq(state->irq, NULL);
+ retval = request_irq(state->irq, rs_interrupt_single,
+ IRQ_T(info), "serial", NULL);
+
+ if (retval)
+ printk("serial shutdown: request_irq: error %d"
+ " Couldn't reacquire IRQ.\n", retval);
+ } else
+ free_irq(state->irq, NULL);
+ }
+
+ if (info->xmit.buf) {
+ free_page((unsigned long) info->xmit.buf);
+ info->xmit.buf = 0;
+ }
+
+ if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->flags &= ~ASYNC_INITIALIZED;
+ restore_flags(flags);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_close()
+ *
+ * This routine is called when the serial port gets closed. First, we
+ * wait for the last remaining data to be sent. Then, we unlink its
+ * async structure from the interrupt chain if necessary, and we free
+ * that IRQ if nothing is left in the chain.
+ * ------------------------------------------------------------
+ */
+static void rs_close(struct tty_struct *tty, struct file * filp)
+{
+ struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct serial_state *state;
+ unsigned long flags;
+
+ if (!info ) return;
+
+ state = info->state;
+
+ save_flags(flags); cli();
+
+ if (tty_hung_up_p(filp)) {
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_close: hung_up\n");
+#endif
+ MOD_DEC_USE_COUNT;
+ restore_flags(flags);
+ return;
+ }
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_close ttys%d, count = %d\n", info->line, state->count);
+#endif
+ if ((tty->count == 1) && (state->count != 1)) {
+ /*
+ * Uh, oh. tty->count is 1, which means that the tty
+ * structure will be freed. state->count should always
+ * be one in these conditions. If it's greater than
+ * one, we've got real problems, since it means the
+ * serial port won't be shutdown.
+ */
+ printk("rs_close: bad serial port count; tty->count is 1, "
+ "state->count is %d\n", state->count);
+ state->count = 1;
+ }
+ if (--state->count < 0) {
+ printk("rs_close: bad serial port count for ttys%d: %d\n",
+ info->line, state->count);
+ state->count = 0;
+ }
+ if (state->count) {
+ MOD_DEC_USE_COUNT;
+ restore_flags(flags);
+ return;
+ }
+ info->flags |= ASYNC_CLOSING;
+ restore_flags(flags);
+
+ /*
+ * Now we wait for the transmit buffer to clear; and we notify
+ * the line discipline to only process XON/XOFF characters.
+ */
+ shutdown(info);
+ if (tty->driver.flush_buffer) tty->driver.flush_buffer(tty);
+ if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty);
+ 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;
+}
+
+/*
+ * rs_wait_until_sent() --- wait until the transmitter is empty
+ */
+static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+}
+
+
+/*
+ * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
+ */
+static void rs_hangup(struct tty_struct *tty)
+{
+ struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct serial_state *state = info->state;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_hangup: called\n");
+#endif
+
+ state = info->state;
+
+ rs_flush_buffer(tty);
+ if (info->flags & ASYNC_CLOSING)
+ return;
+ shutdown(info);
+
+ info->event = 0;
+ state->count = 0;
+ info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
+ info->tty = 0;
+ wake_up_interruptible(&info->open_wait);
+}
+
+
+static int get_async_struct(int line, struct async_struct **ret_info)
+{
+ struct async_struct *info;
+ struct serial_state *sstate;
+
+ sstate = rs_table + line;
+ sstate->count++;
+ if (sstate->info) {
+ *ret_info = sstate->info;
+ return 0;
+ }
+ info = kmalloc(sizeof(struct async_struct), GFP_KERNEL);
+ if (!info) {
+ sstate->count--;
+ return -ENOMEM;
+ }
+ memset(info, 0, sizeof(struct async_struct));
+ init_waitqueue_head(&info->open_wait);
+ init_waitqueue_head(&info->close_wait);
+ init_waitqueue_head(&info->delta_msr_wait);
+ info->magic = SERIAL_MAGIC;
+ info->port = sstate->port;
+ info->flags = sstate->flags;
+ info->xmit_fifo_size = sstate->xmit_fifo_size;
+ info->line = line;
+ info->tqueue.routine = do_softint;
+ info->tqueue.data = info;
+ info->state = sstate;
+ if (sstate->info) {
+ kfree(info);
+ *ret_info = sstate->info;
+ return 0;
+ }
+ *ret_info = sstate->info = info;
+ return 0;
+}
+
+static int
+startup(struct async_struct *info)
+{
+ unsigned long flags;
+ int retval=0;
+ void (*handler)(int, void *, struct pt_regs *);
+ struct serial_state *state= info->state;
+ unsigned long page;
+
+ page = get_free_page(GFP_KERNEL);
+ if (!page)
+ return -ENOMEM;
+
+ save_flags(flags); cli();
+
+ if (info->flags & ASYNC_INITIALIZED) {
+ free_page(page);
+ goto errout;
+ }
+
+ if (!state->port || !state->type) {
+ if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
+ free_page(page);
+ goto errout;
+ }
+ if (info->xmit.buf)
+ free_page(page);
+ else
+ info->xmit.buf = (unsigned char *) page;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("startup: ttys%d (irq %d)...", info->line, state->irq);
+#endif
+
+ /*
+ * Allocate the IRQ if necessary
+ */
+ if (state->irq && (!IRQ_ports[state->irq] ||
+ !IRQ_ports[state->irq]->next_port)) {
+ if (IRQ_ports[state->irq]) {
+ retval = -EBUSY;
+ goto errout;
+ } else
+ handler = rs_interrupt_single;
+
+ retval = request_irq(state->irq, handler, IRQ_T(info),
+ "simserial", NULL);
+ if (retval) {
+ if (capable(CAP_SYS_ADMIN)) {
+ if (info->tty)
+ set_bit(TTY_IO_ERROR,
+ &info->tty->flags);
+ retval = 0;
+ }
+ goto errout;
+ }
+ }
+
+ /*
+ * Insert serial port into IRQ chain.
+ */
+ info->prev_port = 0;
+ info->next_port = IRQ_ports[state->irq];
+ if (info->next_port)
+ info->next_port->prev_port = info;
+ IRQ_ports[state->irq] = info;
+
+ if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->xmit.head = info->xmit.tail = 0;
+
+#if 0
+ /*
+ * Set up serial timers...
+ */
+ timer_table[RS_TIMER].expires = jiffies + 2*HZ/100;
+ timer_active |= 1 << RS_TIMER;
+#endif
+
+ /*
+ * Set up the tty->alt_speed kludge
+ */
+ if (info->tty) {
+ if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
+ info->tty->alt_speed = 57600;
+ if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
+ info->tty->alt_speed = 115200;
+ if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
+ info->tty->alt_speed = 230400;
+ if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
+ info->tty->alt_speed = 460800;
+ }
+
+ info->flags |= ASYNC_INITIALIZED;
+ restore_flags(flags);
+ return 0;
+
+errout:
+ restore_flags(flags);
+ return retval;
+}
+
+
+/*
+ * This routine is called whenever a serial port is opened. It
+ * enables interrupts for a serial port, linking in its async structure into
+ * the IRQ chain. It also performs the serial-specific
+ * initialization for the tty structure.
+ */
+static int rs_open(struct tty_struct *tty, struct file * filp)
+{
+ struct async_struct *info;
+ int retval, line;
+ unsigned long page;
+
+ MOD_INC_USE_COUNT;
+ line = minor(tty->device) - tty->driver.minor_start;
+ if ((line < 0) || (line >= NR_PORTS)) {
+ MOD_DEC_USE_COUNT;
+ return -ENODEV;
+ }
+ retval = get_async_struct(line, &info);
+ if (retval) {
+ MOD_DEC_USE_COUNT;
+ return retval;
+ }
+ tty->driver_data = info;
+ info->tty = tty;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_open %s%d, count = %d\n", tty->driver.name, info->line,
+ info->state->count);
+#endif
+ info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+
+ if (!tmp_buf) {
+ page = get_free_page(GFP_KERNEL);
+ if (!page) {
+ /* MOD_DEC_USE_COUNT; "info->tty" will cause this? */
+ return -ENOMEM;
+ }
+ if (tmp_buf)
+ free_page(page);
+ else
+ tmp_buf = (unsigned char *) page;
+ }
+
+ /*
+ * If the port is the middle of closing, bail out now
+ */
+ if (tty_hung_up_p(filp) ||
+ (info->flags & ASYNC_CLOSING)) {
+ if (info->flags & ASYNC_CLOSING)
+ interruptible_sleep_on(&info->close_wait);
+ /* MOD_DEC_USE_COUNT; "info->tty" will cause this? */
+#ifdef SERIAL_DO_RESTART
+ return ((info->flags & ASYNC_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS);
+#else
+ return -EAGAIN;
+#endif
+ }
+
+ /*
+ * Start up serial port
+ */
+ retval = startup(info);
+ if (retval) {
+ /* MOD_DEC_USE_COUNT; "info->tty" will cause this? */
+ return retval;
+ }
+
+ if ((info->state->count == 1) &&
+ (info->flags & ASYNC_SPLIT_TERMIOS)) {
+ if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
+ *tty->termios = info->state->normal_termios;
+ else
+ *tty->termios = info->state->callout_termios;
+ }
+
+ /*
+ * figure out which console to use (should be one already)
+ */
+ console = console_drivers;
+ while (console) {
+ if ((console->flags & CON_ENABLED) && console->write) break;
+ console = console->next;
+ }
+
+ info->session = current->session;
+ info->pgrp = current->pgrp;
+
+#ifdef SIMSERIAL_DEBUG
+ printk("rs_open ttys%d successful\n", info->line);
+#endif
+ return 0;
+}
+
+/*
+ * /proc fs routines....
+ */
+
+static inline int line_info(char *buf, struct serial_state *state)
+{
+ return sprintf(buf, "%d: uart:%s port:%lX irq:%d\n",
+ state->line, uart_config[state->type].name,
+ state->port, state->irq);
+}
+
+static int rs_read_proc(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ int i, len = 0, l;
+ off_t begin = 0;
+
+ len += sprintf(page, "simserinfo:1.0 driver:%s\n", serial_version);
+ for (i = 0; i < NR_PORTS && len < 4000; i++) {
+ l = line_info(page + len, &rs_table[i]);
+ len += l;
+ if (len+begin > off+count)
+ goto done;
+ if (len+begin < off) {
+ begin += len;
+ len = 0;
+ }
+ }
+ *eof = 1;
+done:
+ if (off >= len+begin)
+ return 0;
+ *start = page + (begin-off);
+ return ((count < begin+len-off) ? count : begin+len-off);
+}
+
+/*
+ * ---------------------------------------------------------------------
+ * rs_init() and friends
+ *
+ * rs_init() is called at boot-time to initialize the serial driver.
+ * ---------------------------------------------------------------------
+ */
+
+/*
+ * This routine prints out the appropriate serial driver version
+ * number, and identifies which options were configured into this
+ * driver.
+ */
+static inline void show_serial_version(void)
+{
+ printk(KERN_INFO "%s version %s with", serial_name, serial_version);
+ printk(" no serial options enabled\n");
+}
+
+/*
+ * The serial driver boot-time initialization code!
+ */
+static int __init
+simrs_init (void)
+{
+ int i;
+ struct serial_state *state;
+
+ show_serial_version();
+
+ /* Initialize the tty_driver structure */
+
+ memset(&serial_driver, 0, sizeof(struct tty_driver));
+ serial_driver.magic = TTY_DRIVER_MAGIC;
+ serial_driver.driver_name = "simserial";
+ serial_driver.name = "ttyS";
+ serial_driver.major = TTY_MAJOR;
+ serial_driver.minor_start = 64;
+ serial_driver.num = 1;
+ 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 = &serial_refcount;
+ serial_driver.table = serial_table;
+ serial_driver.termios = serial_termios;
+ serial_driver.termios_locked = serial_termios_locked;
+
+ serial_driver.open = rs_open;
+ serial_driver.close = rs_close;
+ serial_driver.write = rs_write;
+ serial_driver.put_char = rs_put_char;
+ serial_driver.flush_chars = rs_flush_chars;
+ serial_driver.write_room = rs_write_room;
+ serial_driver.chars_in_buffer = rs_chars_in_buffer;
+ serial_driver.flush_buffer = rs_flush_buffer;
+ serial_driver.ioctl = rs_ioctl;
+ serial_driver.throttle = rs_throttle;
+ serial_driver.unthrottle = rs_unthrottle;
+ serial_driver.send_xchar = rs_send_xchar;
+ serial_driver.set_termios = rs_set_termios;
+ serial_driver.stop = rs_stop;
+ serial_driver.start = rs_start;
+ serial_driver.hangup = rs_hangup;
+ serial_driver.break_ctl = rs_break;
+ serial_driver.wait_until_sent = rs_wait_until_sent;
+ serial_driver.read_proc = rs_read_proc;
+
+ /*
+ * Let's have a little bit of fun !
+ */
+ for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
+
+ if (state->type == PORT_UNKNOWN) continue;
+
+ if (!state->irq) {
+ state->irq = ia64_alloc_irq();
+ ia64_ssc_connect_irq(KEYBOARD_INTR, state->irq);
+ }
+
+ printk(KERN_INFO "ttyS%02d at 0x%04lx (irq = %d) is a %s\n",
+ state->line,
+ state->port, state->irq,
+ uart_config[state->type].name);
+ }
+ /*
+ * The callout device is just like normal device except for
+ * major number and the subtype code.
+ */
+ callout_driver = serial_driver;
+ callout_driver.name = "cua";
+ 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 simserial driver\n");
+
+ if (tty_register_driver(&callout_driver))
+ panic("Couldn't register callout driver\n");
+
+ return 0;
+}
+
+#ifndef MODULE
+__initcall(simrs_init);
+#endif
handle_IPI (int irq, void *dev_id, struct pt_regs *regs)
{
int this_cpu = smp_processor_id();
- unsigned long *pending_ipis = &ipi_operation;
+ unsigned long *pending_ipis = &this_cpu(ipi_operation);
unsigned long ops;
/* Count this now; we may make a call that never returns. */
static inline void
send_IPI_single (int dest_cpu, int op)
{
- set_bit(op, &ipi_operation);
+ set_bit(op, &per_cpu(ipi_operation, dest_cpu));
platform_send_ipi(dest_cpu, IA64_IPI_VECTOR, IA64_IPI_DM_INT, 0);
}
* handler into reading an arbitrary kernel addresses...
*/
if (!user_mode(regs)) {
-#ifdef GAS_HAS_LOCAL_TAGS
- fix = search_exception_table(regs->cr_iip + ia64_psr(regs)->ri);
-#else
- fix = search_exception_table(regs->cr_iip);
-#endif
+ fix = SEARCH_EXCEPTION_TABLE(regs);
}
if (user_mode(regs) || fix.cont) {
if ((current->thread.flags & IA64_THREAD_UAC_SIGBUS) != 0)
int signal = SIGSEGV, code = SEGV_MAPERR;
struct vm_area_struct *vma, *prev_vma;
struct mm_struct *mm = current->mm;
- struct exception_fixup fix;
struct siginfo si;
unsigned long mask;
return;
}
-#ifdef GAS_HAS_LOCAL_TAGS
- fix = search_exception_table(regs->cr_iip + ia64_psr(regs)->ri);
-#else
- fix = search_exception_table(regs->cr_iip);
-#endif
- if (fix.cont) {
- handle_exception(regs, fix);
+ if (done_with_exception(regs))
return;
- }
/*
* Oops. The kernel tried to access some bad page. We'll have to terminate things
#ifdef CONFIG_IA32_SUPPORT
ia32_gdt_init();
#endif
-}
\ No newline at end of file
+}
machvec_end = .;
#endif
+ __start___ksymtab = .; /* Kernel symbol table */
+ __ksymtab : AT(ADDR(__ksymtab) - PAGE_OFFSET)
+ { *(__ksymtab) }
+ __stop___ksymtab = .;
+
/* Unwind info & table: */
. = ALIGN(8);
.IA_64.unwind_info : AT(ADDR(.IA_64.unwind_info) - PAGE_OFFSET)
* scheduler patch
*/
+#include <linux/types.h>
+
#include <asm/system.h>
/**
static __inline__ void
__clear_bit (int nr, volatile void *addr)
{
- volatile __u32 *p = (__u32 *) addr + (nr >> 5);;
+ volatile __u32 *p = (__u32 *) addr + (nr >> 5);
__u32 m = 1 << (nr & 31);
*p &= ~m;
}
#define PROT_READ 0x1 /* page can be read */
#define PROT_WRITE 0x2 /* page can be written */
#define PROT_EXEC 0x4 /* page can be executed */
+#define PROT_SEM 0x8 /* page may be used for atomic ops */
#define PROT_NONE 0x0 /* page can not be accessed */
#define MAP_SHARED 0x01 /* Share changes */
} while (0)
#ifdef CONFIG_SMP
- /*
- * In the SMP case, we save the fph state when context-switching
- * away from a thread that modified fph. This way, when the thread
- * gets scheduled on another CPU, the CPU can pick up the state from
- * task->thread.fph, avoiding the complication of having to fetch
- * the latest fph state from another CPU.
- */
+
+/* Return true if this CPU can call the console drivers in printk() */
+#define arch_consoles_callable() (cpu_online_map & (1UL << smp_processor_id()))
+
+/*
+ * In the SMP case, we save the fph state when context-switching
+ * away from a thread that modified fph. This way, when the thread
+ * gets scheduled on another CPU, the CPU can pick up the state from
+ * task->thread.fph, avoiding the complication of having to fetch
+ * the latest fph state from another CPU.
+ */
# define switch_to(prev,next) do { \
if (ia64_psr(ia64_task_regs(prev))->mfh) { \
ia64_psr(ia64_task_regs(prev))->mfh = 0; \
extern struct exception_fixup search_exception_table (unsigned long addr);
extern void handle_exception (struct pt_regs *regs, struct exception_fixup fixup);
+#ifdef GAS_HAS_LOCAL_TAGS
+#define SEARCH_EXCEPTION_TABLE(regs) search_exception_table(regs->cr_iip + ia64_psr(regs)->ri);
+#else
+#define SEARCH_EXCEPTION_TABLE(regs) search_exception_table(regs->cr_iip);
+#endif
+
+static inline int
+done_with_exception (struct pt_regs *regs)
+{
+ struct exception_fixup fix;
+ fix = SEARCH_EXCEPTION_TABLE(regs);
+ if (fix.cont) {
+ handle_exception(regs, fix);
+ return 1;
+ }
+ return 0;
+}
+
#endif /* _ASM_IA64_UACCESS_H */
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