* More info available at http://www.berkprod.com/ or http://www.pcwatchdog.com/
*/
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/timer.h>
-#include <linux/jiffies.h>
-#include <linux/config.h>
-#include <linux/wait.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/notifier.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/reboot.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#define WD_VER "1.16 (06/12/2004)"
-#define PFX "pcwd: "
+#include <linux/config.h> /* For CONFIG_WATCHDOG_NOWAYOUT/... */
+#include <linux/module.h> /* For module specific items */
+#include <linux/moduleparam.h> /* For new moduleparam's */
+#include <linux/types.h> /* For standard types (like size_t) */
+#include <linux/errno.h> /* For the -ENODEV/... values */
+#include <linux/kernel.h> /* For printk/panic/... */
+#include <linux/delay.h> /* For mdelay function */
+#include <linux/timer.h> /* For timer related operations */
+#include <linux/jiffies.h> /* For jiffies stuff */
+#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
+#include <linux/watchdog.h> /* For the watchdog specific items */
+#include <linux/notifier.h> /* For notifier support */
+#include <linux/reboot.h> /* For reboot_notifier stuff */
+#include <linux/init.h> /* For __init/__exit/... */
+#include <linux/fs.h> /* For file operations */
+#include <linux/ioport.h> /* For io-port access */
+#include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */
+
+#include <asm/uaccess.h> /* For copy_to_user/put_user/... */
+#include <asm/io.h> /* For inb/outb/... */
+
+/* Module and version information */
+#define WATCHDOG_VERSION "1.17"
+#define WATCHDOG_DATE "12 Feb 2006"
+#define WATCHDOG_DRIVER_NAME "ISA-PC Watchdog"
+#define WATCHDOG_NAME "pcwd"
+#define PFX WATCHDOG_NAME ": "
+#define DRIVER_VERSION WATCHDOG_DRIVER_NAME " driver, v" WATCHDOG_VERSION " (" WATCHDOG_DATE ")\n"
+#define WD_VER WATCHDOG_VERSION " (" WATCHDOG_DATE ")"
/*
* It should be noted that PCWD_REVISION_B was removed because A and B
/*
* These are the defines that describe the control status bits for the
- * PC Watchdog card, revision A.
- */
-#define WD_WDRST 0x01 /* Previously reset state */
-#define WD_T110 0x02 /* Temperature overheat sense */
-#define WD_HRTBT 0x04 /* Heartbeat sense */
-#define WD_RLY2 0x08 /* External relay triggered */
-#define WD_SRLY2 0x80 /* Software external relay triggered */
-
-/*
- * These are the defines that describe the control status bits for the
- * PC Watchdog card, revision C.
- */
-#define WD_REVC_WTRP 0x01 /* Watchdog Trip status */
-#define WD_REVC_HRBT 0x02 /* Watchdog Heartbeat */
-#define WD_REVC_TTRP 0x04 /* Temperature Trip status */
+ * PCI-PC Watchdog card.
+*/
+/* Port 1 : Control Status #1 for the PC Watchdog card, revision A. */
+#define WD_WDRST 0x01 /* Previously reset state */
+#define WD_T110 0x02 /* Temperature overheat sense */
+#define WD_HRTBT 0x04 /* Heartbeat sense */
+#define WD_RLY2 0x08 /* External relay triggered */
+#define WD_SRLY2 0x80 /* Software external relay triggered */
+/* Port 1 : Control Status #1 for the PC Watchdog card, revision C. */
+#define WD_REVC_WTRP 0x01 /* Watchdog Trip status */
+#define WD_REVC_HRBT 0x02 /* Watchdog Heartbeat */
+#define WD_REVC_TTRP 0x04 /* Temperature Trip status */
+#define WD_REVC_RL2A 0x08 /* Relay 2 activated by on-board processor */
+#define WD_REVC_RL1A 0x10 /* Relay 1 active */
+#define WD_REVC_R2DS 0x40 /* Relay 2 disable */
+#define WD_REVC_RLY2 0x80 /* Relay 2 activated? */
+/* Port 2 : Control Status #2 */
+#define WD_WDIS 0x10 /* Watchdog Disabled */
+#define WD_ENTP 0x20 /* Watchdog Enable Temperature Trip */
+#define WD_SSEL 0x40 /* Watchdog Switch Select (1:SW1 <-> 0:SW2) */
+#define WD_WCMD 0x80 /* Watchdog Command Mode */
/* max. time we give an ISA watchdog card to process a command */
/* 500ms for each 4 bit response (according to spec.) */
#define ISA_COMMAND_TIMEOUT 1000
/* Watchdog's internal commands */
-#define CMD_ISA_IDLE 0x00
-#define CMD_ISA_VERSION_INTEGER 0x01
-#define CMD_ISA_VERSION_TENTH 0x02
-#define CMD_ISA_VERSION_HUNDRETH 0x03
-#define CMD_ISA_VERSION_MINOR 0x04
-#define CMD_ISA_SWITCH_SETTINGS 0x05
-#define CMD_ISA_DELAY_TIME_2SECS 0x0A
-#define CMD_ISA_DELAY_TIME_4SECS 0x0B
-#define CMD_ISA_DELAY_TIME_8SECS 0x0C
+#define CMD_ISA_IDLE 0x00
+#define CMD_ISA_VERSION_INTEGER 0x01
+#define CMD_ISA_VERSION_TENTH 0x02
+#define CMD_ISA_VERSION_HUNDRETH 0x03
+#define CMD_ISA_VERSION_MINOR 0x04
+#define CMD_ISA_SWITCH_SETTINGS 0x05
+#define CMD_ISA_RESET_PC 0x06
+#define CMD_ISA_ARM_0 0x07
+#define CMD_ISA_ARM_30 0x08
+#define CMD_ISA_ARM_60 0x09
+#define CMD_ISA_DELAY_TIME_2SECS 0x0A
+#define CMD_ISA_DELAY_TIME_4SECS 0x0B
+#define CMD_ISA_DELAY_TIME_8SECS 0x0C
+#define CMD_ISA_RESET_RELAYS 0x0D
/*
* We are using an kernel timer to do the pinging of the watchdog
/* internal variables */
static atomic_t open_allowed = ATOMIC_INIT(1);
static char expect_close;
-static struct timer_list timer;
-static unsigned long next_heartbeat;
static int temp_panic;
-static int revision; /* The card's revision */
-static int supports_temp; /* Wether or not the card has a temperature device */
-static int command_mode; /* Wether or not the card is in command mode */
-static int initial_status; /* The card's boot status */
-static int current_readport; /* The cards I/O address */
-static spinlock_t io_lock;
+static struct { /* this is private data for each ISA-PC watchdog card */
+ char fw_ver_str[6]; /* The cards firmware version */
+ int revision; /* The card's revision */
+ int supports_temp; /* Wether or not the card has a temperature device */
+ int command_mode; /* Wether or not the card is in command mode */
+ int boot_status; /* The card's boot status */
+ int io_addr; /* The cards I/O address */
+ spinlock_t io_lock; /* the lock for io operations */
+ struct timer_list timer; /* The timer that pings the watchdog */
+ unsigned long next_heartbeat; /* the next_heartbeat for the timer */
+} pcwd_private;
/* module parameters */
+#define QUIET 0 /* Default */
+#define VERBOSE 1 /* Verbose */
+#define DEBUG 2 /* print fancy stuff too */
+static int debug = QUIET;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level: 0=Quiet, 1=Verbose, 2=Debug (default=0)");
+
#define WATCHDOG_HEARTBEAT 60 /* 60 sec default heartbeat */
static int heartbeat = WATCHDOG_HEARTBEAT;
module_param(heartbeat, int, 0);
MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<=heartbeat<=7200, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
-#ifdef CONFIG_WATCHDOG_NOWAYOUT
-static int nowayout = 1;
-#else
-static int nowayout = 0;
-#endif
-
+static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)");
int control_status;
int port0, last_port0; /* Double read for stabilising */
+ if (debug >= DEBUG)
+ printk(KERN_DEBUG PFX "sending following data cmd=0x%02x\n",
+ cmd);
+
/* The WCMD bit must be 1 and the command is only 4 bits in size */
- control_status = (cmd & 0x0F) | 0x80;
- outb_p(control_status, current_readport + 2);
+ control_status = (cmd & 0x0F) | WD_WCMD;
+ outb_p(control_status, pcwd_private.io_addr + 2);
udelay(ISA_COMMAND_TIMEOUT);
- port0 = inb_p(current_readport);
+ port0 = inb_p(pcwd_private.io_addr);
for (i = 0; i < 25; ++i) {
last_port0 = port0;
- port0 = inb_p(current_readport);
+ port0 = inb_p(pcwd_private.io_addr);
if (port0 == last_port0)
break; /* Data is stable */
udelay (250);
}
+ if (debug >= DEBUG)
+ printk(KERN_DEBUG PFX "received following data for cmd=0x%02x: port0=0x%02x last_port0=0x%02x\n",
+ cmd, port0, last_port0);
+
return port0;
}
int i, found=0, count=0;
/* Set the card into command mode */
- spin_lock(&io_lock);
+ spin_lock(&pcwd_private.io_lock);
while ((!found) && (count < 3)) {
i = send_isa_command(CMD_ISA_IDLE);
found = 1;
else if (i == 0xF3) {
/* Card does not like what we've done to it */
- outb_p(0x00, current_readport + 2);
+ outb_p(0x00, pcwd_private.io_addr + 2);
udelay(1200); /* Spec says wait 1ms */
- outb_p(0x00, current_readport + 2);
+ outb_p(0x00, pcwd_private.io_addr + 2);
udelay(ISA_COMMAND_TIMEOUT);
}
count++;
}
- spin_unlock(&io_lock);
- command_mode = found;
+ spin_unlock(&pcwd_private.io_lock);
+ pcwd_private.command_mode = found;
+
+ if (debug >= DEBUG)
+ printk(KERN_DEBUG PFX "command_mode=%d\n",
+ pcwd_private.command_mode);
return(found);
}
static void unset_command_mode(void)
{
/* Set the card into normal mode */
- spin_lock(&io_lock);
- outb_p(0x00, current_readport + 2);
+ spin_lock(&pcwd_private.io_lock);
+ outb_p(0x00, pcwd_private.io_addr + 2);
udelay(ISA_COMMAND_TIMEOUT);
- spin_unlock(&io_lock);
+ spin_unlock(&pcwd_private.io_lock);
+
+ pcwd_private.command_mode = 0;
+
+ if (debug >= DEBUG)
+ printk(KERN_DEBUG PFX "command_mode=%d\n",
+ pcwd_private.command_mode);
+}
+
+static inline void pcwd_check_temperature_support(void)
+{
+ if (inb(pcwd_private.io_addr) != 0xF0)
+ pcwd_private.supports_temp = 1;
+}
+
+static inline void pcwd_get_firmware(void)
+{
+ int one, ten, hund, minor;
+
+ strcpy(pcwd_private.fw_ver_str, "ERROR");
+
+ if (set_command_mode()) {
+ one = send_isa_command(CMD_ISA_VERSION_INTEGER);
+ ten = send_isa_command(CMD_ISA_VERSION_TENTH);
+ hund = send_isa_command(CMD_ISA_VERSION_HUNDRETH);
+ minor = send_isa_command(CMD_ISA_VERSION_MINOR);
+ sprintf(pcwd_private.fw_ver_str, "%c.%c%c%c", one, ten, hund, minor);
+ }
+ unset_command_mode();
+
+ return;
+}
+
+static inline int pcwd_get_option_switches(void)
+{
+ int option_switches=0;
+
+ if (set_command_mode()) {
+ /* Get switch settings */
+ option_switches = send_isa_command(CMD_ISA_SWITCH_SETTINGS);
+ }
- command_mode = 0;
+ unset_command_mode();
+ return(option_switches);
+}
+
+static void pcwd_show_card_info(void)
+{
+ int option_switches;
+
+ /* Get some extra info from the hardware (in command/debug/diag mode) */
+ if (pcwd_private.revision == PCWD_REVISION_A)
+ printk(KERN_INFO PFX "ISA-PC Watchdog (REV.A) detected at port 0x%04x\n", pcwd_private.io_addr);
+ else if (pcwd_private.revision == PCWD_REVISION_C) {
+ pcwd_get_firmware();
+ printk(KERN_INFO PFX "ISA-PC Watchdog (REV.C) detected at port 0x%04x (Firmware version: %s)\n",
+ pcwd_private.io_addr, pcwd_private.fw_ver_str);
+ option_switches = pcwd_get_option_switches();
+ printk(KERN_INFO PFX "Option switches (0x%02x): Temperature Reset Enable=%s, Power On Delay=%s\n",
+ option_switches,
+ ((option_switches & 0x10) ? "ON" : "OFF"),
+ ((option_switches & 0x08) ? "ON" : "OFF"));
+
+ /* Reprogram internal heartbeat to 2 seconds */
+ if (set_command_mode()) {
+ send_isa_command(CMD_ISA_DELAY_TIME_2SECS);
+ unset_command_mode();
+ }
+ }
+
+ if (pcwd_private.supports_temp)
+ printk(KERN_INFO PFX "Temperature Option Detected\n");
+
+ if (pcwd_private.boot_status & WDIOF_CARDRESET)
+ printk(KERN_INFO PFX "Previous reboot was caused by the card\n");
+
+ if (pcwd_private.boot_status & WDIOF_OVERHEAT) {
+ printk(KERN_EMERG PFX "Card senses a CPU Overheat. Panicking!\n");
+ printk(KERN_EMERG PFX "CPU Overheat\n");
+ }
+
+ if (pcwd_private.boot_status == 0)
+ printk(KERN_INFO PFX "No previous trip detected - Cold boot or reset\n");
}
static void pcwd_timer_ping(unsigned long data)
/* If we got a heartbeat pulse within the WDT_INTERVAL
* we agree to ping the WDT */
- if(time_before(jiffies, next_heartbeat)) {
+ if(time_before(jiffies, pcwd_private.next_heartbeat)) {
/* Ping the watchdog */
- spin_lock(&io_lock);
- if (revision == PCWD_REVISION_A) {
+ spin_lock(&pcwd_private.io_lock);
+ if (pcwd_private.revision == PCWD_REVISION_A) {
/* Rev A cards are reset by setting the WD_WDRST bit in register 1 */
- wdrst_stat = inb_p(current_readport);
+ wdrst_stat = inb_p(pcwd_private.io_addr);
wdrst_stat &= 0x0F;
wdrst_stat |= WD_WDRST;
- outb_p(wdrst_stat, current_readport + 1);
+ outb_p(wdrst_stat, pcwd_private.io_addr + 1);
} else {
/* Re-trigger watchdog by writing to port 0 */
- outb_p(0x00, current_readport);
+ outb_p(0x00, pcwd_private.io_addr);
}
/* Re-set the timer interval */
- mod_timer(&timer, jiffies + WDT_INTERVAL);
+ mod_timer(&pcwd_private.timer, jiffies + WDT_INTERVAL);
- spin_unlock(&io_lock);
+ spin_unlock(&pcwd_private.io_lock);
} else {
printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
}
{
int stat_reg;
- next_heartbeat = jiffies + (heartbeat * HZ);
+ pcwd_private.next_heartbeat = jiffies + (heartbeat * HZ);
/* Start the timer */
- mod_timer(&timer, jiffies + WDT_INTERVAL);
+ mod_timer(&pcwd_private.timer, jiffies + WDT_INTERVAL);
/* Enable the port */
- if (revision == PCWD_REVISION_C) {
- spin_lock(&io_lock);
- outb_p(0x00, current_readport + 3);
+ if (pcwd_private.revision == PCWD_REVISION_C) {
+ spin_lock(&pcwd_private.io_lock);
+ outb_p(0x00, pcwd_private.io_addr + 3);
udelay(ISA_COMMAND_TIMEOUT);
- stat_reg = inb_p(current_readport + 2);
- spin_unlock(&io_lock);
- if (stat_reg & 0x10) {
+ stat_reg = inb_p(pcwd_private.io_addr + 2);
+ spin_unlock(&pcwd_private.io_lock);
+ if (stat_reg & WD_WDIS) {
printk(KERN_INFO PFX "Could not start watchdog\n");
return -EIO;
}
}
+
+ if (debug >= VERBOSE)
+ printk(KERN_DEBUG PFX "Watchdog started\n");
+
return 0;
}
int stat_reg;
/* Stop the timer */
- del_timer(&timer);
+ del_timer(&pcwd_private.timer);
/* Disable the board */
- if (revision == PCWD_REVISION_C) {
- spin_lock(&io_lock);
- outb_p(0xA5, current_readport + 3);
+ if (pcwd_private.revision == PCWD_REVISION_C) {
+ spin_lock(&pcwd_private.io_lock);
+ outb_p(0xA5, pcwd_private.io_addr + 3);
udelay(ISA_COMMAND_TIMEOUT);
- outb_p(0xA5, current_readport + 3);
+ outb_p(0xA5, pcwd_private.io_addr + 3);
udelay(ISA_COMMAND_TIMEOUT);
- stat_reg = inb_p(current_readport + 2);
- spin_unlock(&io_lock);
- if ((stat_reg & 0x10) == 0) {
+ stat_reg = inb_p(pcwd_private.io_addr + 2);
+ spin_unlock(&pcwd_private.io_lock);
+ if ((stat_reg & WD_WDIS) == 0) {
printk(KERN_INFO PFX "Could not stop watchdog\n");
return -EIO;
}
}
+
+ if (debug >= VERBOSE)
+ printk(KERN_DEBUG PFX "Watchdog stopped\n");
+
return 0;
}
static int pcwd_keepalive(void)
{
/* user land ping */
- next_heartbeat = jiffies + (heartbeat * HZ);
+ pcwd_private.next_heartbeat = jiffies + (heartbeat * HZ);
+
+ if (debug >= DEBUG)
+ printk(KERN_DEBUG PFX "Watchdog keepalive signal send\n");
+
return 0;
}
return -EINVAL;
heartbeat = t;
+
+ if (debug >= VERBOSE)
+ printk(KERN_DEBUG PFX "New heartbeat: %d\n",
+ heartbeat);
+
return 0;
}
static int pcwd_get_status(int *status)
{
- int card_status;
+ int control_status;
*status=0;
- spin_lock(&io_lock);
- if (revision == PCWD_REVISION_A)
+ spin_lock(&pcwd_private.io_lock);
+ if (pcwd_private.revision == PCWD_REVISION_A)
/* Rev A cards return status information from
* the base register, which is used for the
* temperature in other cards. */
- card_status = inb(current_readport);
+ control_status = inb(pcwd_private.io_addr);
else {
/* Rev C cards return card status in the base
* address + 1 register. And use different bits
* to indicate a card initiated reset, and an
* over-temperature condition. And the reboot
* status can be reset. */
- card_status = inb(current_readport + 1);
+ control_status = inb(pcwd_private.io_addr + 1);
}
- spin_unlock(&io_lock);
+ spin_unlock(&pcwd_private.io_lock);
- if (revision == PCWD_REVISION_A) {
- if (card_status & WD_WDRST)
+ if (pcwd_private.revision == PCWD_REVISION_A) {
+ if (control_status & WD_WDRST)
*status |= WDIOF_CARDRESET;
- if (card_status & WD_T110) {
+ if (control_status & WD_T110) {
*status |= WDIOF_OVERHEAT;
if (temp_panic) {
printk (KERN_INFO PFX "Temperature overheat trip!\n");
- machine_power_off();
+ kernel_power_off();
+ /* or should we just do a: panic(PFX "Temperature overheat trip!\n"); */
}
}
} else {
- if (card_status & WD_REVC_WTRP)
+ if (control_status & WD_REVC_WTRP)
*status |= WDIOF_CARDRESET;
- if (card_status & WD_REVC_TTRP) {
+ if (control_status & WD_REVC_TTRP) {
*status |= WDIOF_OVERHEAT;
if (temp_panic) {
printk (KERN_INFO PFX "Temperature overheat trip!\n");
- machine_power_off();
+ kernel_power_off();
+ /* or should we just do a: panic(PFX "Temperature overheat trip!\n"); */
}
}
}
static int pcwd_clear_status(void)
{
- if (revision == PCWD_REVISION_C) {
- spin_lock(&io_lock);
- outb_p(0x00, current_readport + 1); /* clear reset status */
- spin_unlock(&io_lock);
+ int control_status;
+
+ if (pcwd_private.revision == PCWD_REVISION_C) {
+ spin_lock(&pcwd_private.io_lock);
+
+ if (debug >= VERBOSE)
+ printk(KERN_INFO PFX "clearing watchdog trip status\n");
+
+ control_status = inb_p(pcwd_private.io_addr + 1);
+
+ if (debug >= DEBUG) {
+ printk(KERN_DEBUG PFX "status was: 0x%02x\n", control_status);
+ printk(KERN_DEBUG PFX "sending: 0x%02x\n",
+ (control_status & WD_REVC_R2DS));
+ }
+
+ /* clear reset status & Keep Relay 2 disable state as it is */
+ outb_p((control_status & WD_REVC_R2DS), pcwd_private.io_addr + 1);
+
+ spin_unlock(&pcwd_private.io_lock);
}
return 0;
}
static int pcwd_get_temperature(int *temperature)
{
/* check that port 0 gives temperature info and no command results */
- if (command_mode)
+ if (pcwd_private.command_mode)
return -1;
*temperature = 0;
- if (!supports_temp)
+ if (!pcwd_private.supports_temp)
return -ENODEV;
/*
* Convert celsius to fahrenheit, since this was
* the decided 'standard' for this return value.
*/
- spin_lock(&io_lock);
- *temperature = ((inb(current_readport)) * 9 / 5) + 32;
- spin_unlock(&io_lock);
+ spin_lock(&pcwd_private.io_lock);
+ *temperature = ((inb(pcwd_private.io_addr)) * 9 / 5) + 32;
+ spin_unlock(&pcwd_private.io_lock);
+
+ if (debug >= DEBUG) {
+ printk(KERN_DEBUG PFX "temperature is: %d F\n",
+ *temperature);
+ }
return 0;
}
return put_user(status, argp);
case WDIOC_GETBOOTSTATUS:
- return put_user(initial_status, argp);
+ return put_user(pcwd_private.boot_status, argp);
case WDIOC_GETTEMP:
if (pcwd_get_temperature(&temperature))
return put_user(temperature, argp);
case WDIOC_SETOPTIONS:
- if (revision == PCWD_REVISION_C)
+ if (pcwd_private.revision == PCWD_REVISION_C)
{
if(copy_from_user(&rv, argp, sizeof(int)))
return -EFAULT;
static int pcwd_open(struct inode *inode, struct file *file)
{
if (!atomic_dec_and_test(&open_allowed) ) {
+ if (debug >= VERBOSE)
+ printk(KERN_ERR PFX "Attempt to open already opened device.\n");
atomic_inc( &open_allowed );
return -EBUSY;
}
static int pcwd_temp_open(struct inode *inode, struct file *file)
{
- if (!supports_temp)
+ if (!pcwd_private.supports_temp)
return -ENODEV;
return nonseekable_open(inode, file);
* Init & exit routines
*/
-static inline void get_support(void)
-{
- if (inb(current_readport) != 0xF0)
- supports_temp = 1;
-}
-
static inline int get_revision(void)
{
int r = PCWD_REVISION_C;
- spin_lock(&io_lock);
+ spin_lock(&pcwd_private.io_lock);
/* REV A cards use only 2 io ports; test
* presumes a floating bus reads as 0xff. */
- if ((inb(current_readport + 2) == 0xFF) ||
- (inb(current_readport + 3) == 0xFF))
+ if ((inb(pcwd_private.io_addr + 2) == 0xFF) ||
+ (inb(pcwd_private.io_addr + 3) == 0xFF))
r=PCWD_REVISION_A;
- spin_unlock(&io_lock);
+ spin_unlock(&pcwd_private.io_lock);
return r;
}
-static inline char *get_firmware(void)
-{
- int one, ten, hund, minor;
- char *ret;
-
- ret = kmalloc(6, GFP_KERNEL);
- if(ret == NULL)
- return NULL;
-
- if (set_command_mode()) {
- one = send_isa_command(CMD_ISA_VERSION_INTEGER);
- ten = send_isa_command(CMD_ISA_VERSION_TENTH);
- hund = send_isa_command(CMD_ISA_VERSION_HUNDRETH);
- minor = send_isa_command(CMD_ISA_VERSION_MINOR);
- sprintf(ret, "%c.%c%c%c", one, ten, hund, minor);
- }
- else
- sprintf(ret, "ERROR");
-
- unset_command_mode();
- return(ret);
-}
-
-static inline int get_option_switches(void)
-{
- int rv=0;
-
- if (set_command_mode()) {
- /* Get switch settings */
- rv = send_isa_command(CMD_ISA_SWITCH_SETTINGS);
- }
-
- unset_command_mode();
- return(rv);
-}
-
static int __devinit pcwatchdog_init(int base_addr)
{
int ret;
- char *firmware;
- int option_switches;
cards_found++;
if (cards_found == 1)
printk(KERN_ERR PFX "No I/O-Address for card detected\n");
return -ENODEV;
}
- current_readport = base_addr;
+ pcwd_private.io_addr = base_addr;
/* Check card's revision */
- revision = get_revision();
+ pcwd_private.revision = get_revision();
- if (!request_region(current_readport, (revision == PCWD_REVISION_A) ? 2 : 4, "PCWD")) {
+ if (!request_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4, "PCWD")) {
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
- current_readport);
- current_readport = 0x0000;
+ pcwd_private.io_addr);
+ pcwd_private.io_addr = 0x0000;
return -EIO;
}
/* Initial variables */
- supports_temp = 0;
+ pcwd_private.supports_temp = 0;
temp_panic = 0;
- initial_status = 0x0000;
+ pcwd_private.boot_status = 0x0000;
/* get the boot_status */
- pcwd_get_status(&initial_status);
+ pcwd_get_status(&pcwd_private.boot_status);
/* clear the "card caused reboot" flag */
pcwd_clear_status();
- init_timer(&timer);
- timer.function = pcwd_timer_ping;
- timer.data = 0;
+ init_timer(&pcwd_private.timer);
+ pcwd_private.timer.function = pcwd_timer_ping;
+ pcwd_private.timer.data = 0;
/* Disable the board */
pcwd_stop();
/* Check whether or not the card supports the temperature device */
- get_support();
-
- /* Get some extra info from the hardware (in command/debug/diag mode) */
- if (revision == PCWD_REVISION_A)
- printk(KERN_INFO PFX "ISA-PC Watchdog (REV.A) detected at port 0x%04x\n", current_readport);
- else if (revision == PCWD_REVISION_C) {
- firmware = get_firmware();
- printk(KERN_INFO PFX "ISA-PC Watchdog (REV.C) detected at port 0x%04x (Firmware version: %s)\n",
- current_readport, firmware);
- kfree(firmware);
- option_switches = get_option_switches();
- printk(KERN_INFO PFX "Option switches (0x%02x): Temperature Reset Enable=%s, Power On Delay=%s\n",
- option_switches,
- ((option_switches & 0x10) ? "ON" : "OFF"),
- ((option_switches & 0x08) ? "ON" : "OFF"));
-
- /* Reprogram internal heartbeat to 2 seconds */
- if (set_command_mode()) {
- send_isa_command(CMD_ISA_DELAY_TIME_2SECS);
- unset_command_mode();
- }
- } else {
- /* Should NEVER happen, unless get_revision() fails. */
- printk(KERN_INFO PFX "Unable to get revision\n");
- release_region(current_readport, (revision == PCWD_REVISION_A) ? 2 : 4);
- current_readport = 0x0000;
- return -1;
- }
-
- if (supports_temp)
- printk(KERN_INFO PFX "Temperature Option Detected\n");
+ pcwd_check_temperature_support();
- if (initial_status & WDIOF_CARDRESET)
- printk(KERN_INFO PFX "Previous reboot was caused by the card\n");
-
- if (initial_status & WDIOF_OVERHEAT) {
- printk(KERN_EMERG PFX "Card senses a CPU Overheat. Panicking!\n");
- printk(KERN_EMERG PFX "CPU Overheat\n");
- }
-
- if (initial_status == 0)
- printk(KERN_INFO PFX "No previous trip detected - Cold boot or reset\n");
+ /* Show info about the card itself */
+ pcwd_show_card_info();
/* Check that the heartbeat value is within it's range ; if not reset to the default */
- if (pcwd_set_heartbeat(heartbeat)) {
- pcwd_set_heartbeat(WATCHDOG_HEARTBEAT);
- printk(KERN_INFO PFX "heartbeat value must be 2<=heartbeat<=7200, using %d\n",
- WATCHDOG_HEARTBEAT);
+ if (pcwd_set_heartbeat(heartbeat)) {
+ pcwd_set_heartbeat(WATCHDOG_HEARTBEAT);
+ printk(KERN_INFO PFX "heartbeat value must be 2<=heartbeat<=7200, using %d\n",
+ WATCHDOG_HEARTBEAT);
}
ret = register_reboot_notifier(&pcwd_notifier);
if (ret) {
printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
ret);
- release_region(current_readport, (revision == PCWD_REVISION_A) ? 2 : 4);
- current_readport = 0x0000;
+ release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
+ pcwd_private.io_addr = 0x0000;
return ret;
}
- if (supports_temp) {
+ if (pcwd_private.supports_temp) {
ret = misc_register(&temp_miscdev);
if (ret) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
TEMP_MINOR, ret);
unregister_reboot_notifier(&pcwd_notifier);
- release_region(current_readport, (revision == PCWD_REVISION_A) ? 2 : 4);
- current_readport = 0x0000;
+ release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
+ pcwd_private.io_addr = 0x0000;
return ret;
}
}
if (ret) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
- if (supports_temp)
+ if (pcwd_private.supports_temp)
misc_deregister(&temp_miscdev);
unregister_reboot_notifier(&pcwd_notifier);
- release_region(current_readport, (revision == PCWD_REVISION_A) ? 2 : 4);
- current_readport = 0x0000;
+ release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
+ pcwd_private.io_addr = 0x0000;
return ret;
}
/* Deregister */
misc_deregister(&pcwd_miscdev);
- if (supports_temp)
+ if (pcwd_private.supports_temp)
misc_deregister(&temp_miscdev);
unregister_reboot_notifier(&pcwd_notifier);
- release_region(current_readport, (revision == PCWD_REVISION_A) ? 2 : 4);
- current_readport = 0x0000;
+ release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
+ pcwd_private.io_addr = 0x0000;
+ cards_found--;
}
/*
{
int i, found = 0;
- spin_lock_init(&io_lock);
+ spin_lock_init(&pcwd_private.io_lock);
for (i = 0; pcwd_ioports[i] != 0; i++) {
if (pcwd_checkcard(pcwd_ioports[i])) {
static void __exit pcwd_cleanup_module(void)
{
- if (current_readport)
+ if (pcwd_private.io_addr)
pcwatchdog_exit();
- return;
+
+ printk(KERN_INFO PFX "Watchdog Module Unloaded.\n");
}
module_init(pcwd_init_module);
git://git.onelab.eu / linux-2.6.git / blobdiff