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@@ -49,29 +49,37 @@
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* More info available at http://www.berkprod.com/ or http://www.pcwatchdog.com/
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*/
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-#include <linux/module.h>
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-#include <linux/moduleparam.h>
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-#include <linux/types.h>
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-#include <linux/timer.h>
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-#include <linux/jiffies.h>
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-#include <linux/config.h>
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-#include <linux/wait.h>
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-#include <linux/slab.h>
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-#include <linux/ioport.h>
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-#include <linux/delay.h>
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-#include <linux/fs.h>
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-#include <linux/miscdevice.h>
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-#include <linux/watchdog.h>
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-#include <linux/notifier.h>
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-#include <linux/init.h>
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-#include <linux/spinlock.h>
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-#include <linux/reboot.h>
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+#include <linux/config.h> /* For CONFIG_WATCHDOG_NOWAYOUT/... */
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+#include <linux/module.h> /* For module specific items */
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+#include <linux/moduleparam.h> /* For new moduleparam's */
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+#include <linux/types.h> /* For standard types (like size_t) */
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+#include <linux/errno.h> /* For the -ENODEV/... values */
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+#include <linux/kernel.h> /* For printk/panic/... */
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+#include <linux/delay.h> /* For mdelay function */
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+#include <linux/timer.h> /* For timer related operations */
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+#include <linux/jiffies.h> /* For jiffies stuff */
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+#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
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+#include <linux/watchdog.h> /* For the watchdog specific items */
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+#include <linux/notifier.h> /* For notifier support */
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+#include <linux/reboot.h> /* For reboot_notifier stuff */
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+#include <linux/init.h> /* For __init/__exit/... */
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+#include <linux/fs.h> /* For file operations */
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+#include <linux/ioport.h> /* For io-port access */
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+#include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */
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#include <linux/sched.h> /* TASK_INTERRUPTIBLE, set_current_state() and friends */
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-#include <asm/uaccess.h>
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-#include <asm/io.h>
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+#include <linux/slab.h> /* For kmalloc */
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-#define WD_VER "1.16 (06/12/2004)"
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-#define PFX "pcwd: "
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+#include <asm/uaccess.h> /* For copy_to_user/put_user/... */
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+#include <asm/io.h> /* For inb/outb/... */
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+
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+/* Module and version information */
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+#define WATCHDOG_VERSION "1.16"
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+#define WATCHDOG_DATE "03 Jan 2006"
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+#define WATCHDOG_DRIVER_NAME "ISA-PC Watchdog"
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+#define WATCHDOG_NAME "pcwd"
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+#define PFX WATCHDOG_NAME ": "
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+#define DRIVER_VERSION WATCHDOG_DRIVER_NAME " driver, v" WATCHDOG_VERSION " (" WATCHDOG_DATE ")\n"
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+#define WD_VER WATCHDOG_VERSION " (" WATCHDOG_DATE ")"
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/*
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* It should be noted that PCWD_REVISION_B was removed because A and B
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@@ -85,36 +93,38 @@
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/*
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* These are the defines that describe the control status bits for the
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- * PC Watchdog card, revision A.
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- */
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+ * PCI-PC Watchdog card.
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+*/
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+/* Port 1 : Control Status #1 for the PC Watchdog card, revision A. */
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#define WD_WDRST 0x01 /* Previously reset state */
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#define WD_T110 0x02 /* Temperature overheat sense */
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#define WD_HRTBT 0x04 /* Heartbeat sense */
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#define WD_RLY2 0x08 /* External relay triggered */
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#define WD_SRLY2 0x80 /* Software external relay triggered */
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-
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-/*
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- * These are the defines that describe the control status bits for the
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- * PC Watchdog card, revision C.
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- */
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+/* Port 1 : Control Status #1 for the PC Watchdog card, revision C. */
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#define WD_REVC_WTRP 0x01 /* Watchdog Trip status */
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#define WD_REVC_HRBT 0x02 /* Watchdog Heartbeat */
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#define WD_REVC_TTRP 0x04 /* Temperature Trip status */
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+/* Port 2 : Control Status #2 */
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+#define WD_WDIS 0x10 /* Watchdog Disabled */
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+#define WD_ENTP 0x20 /* Watchdog Enable Temperature Trip */
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+#define WD_SSEL 0x40 /* Watchdog Switch Select (1:SW1 <-> 0:SW2) */
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+#define WD_WCMD 0x80 /* Watchdog Command Mode */
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/* max. time we give an ISA watchdog card to process a command */
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/* 500ms for each 4 bit response (according to spec.) */
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#define ISA_COMMAND_TIMEOUT 1000
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/* Watchdog's internal commands */
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-#define CMD_ISA_IDLE 0x00
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-#define CMD_ISA_VERSION_INTEGER 0x01
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-#define CMD_ISA_VERSION_TENTH 0x02
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-#define CMD_ISA_VERSION_HUNDRETH 0x03
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-#define CMD_ISA_VERSION_MINOR 0x04
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-#define CMD_ISA_SWITCH_SETTINGS 0x05
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-#define CMD_ISA_DELAY_TIME_2SECS 0x0A
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-#define CMD_ISA_DELAY_TIME_4SECS 0x0B
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-#define CMD_ISA_DELAY_TIME_8SECS 0x0C
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+#define CMD_ISA_IDLE 0x00
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+#define CMD_ISA_VERSION_INTEGER 0x01
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+#define CMD_ISA_VERSION_TENTH 0x02
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+#define CMD_ISA_VERSION_HUNDRETH 0x03
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+#define CMD_ISA_VERSION_MINOR 0x04
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+#define CMD_ISA_SWITCH_SETTINGS 0x05
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+#define CMD_ISA_DELAY_TIME_2SECS 0x0A
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+#define CMD_ISA_DELAY_TIME_4SECS 0x0B
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+#define CMD_ISA_DELAY_TIME_8SECS 0x0C
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/*
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* We are using an kernel timer to do the pinging of the watchdog
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@@ -130,15 +140,17 @@ static int cards_found;
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/* internal variables */
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static atomic_t open_allowed = ATOMIC_INIT(1);
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static char expect_close;
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-static struct timer_list timer;
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-static unsigned long next_heartbeat;
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static int temp_panic;
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-static int revision; /* The card's revision */
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-static int supports_temp; /* Wether or not the card has a temperature device */
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-static int command_mode; /* Wether or not the card is in command mode */
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-static int initial_status; /* The card's boot status */
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-static int current_readport; /* The cards I/O address */
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-static spinlock_t io_lock;
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+static struct { /* this is private data for each ISA-PC watchdog card */
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+ int revision; /* The card's revision */
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+ int supports_temp; /* Wether or not the card has a temperature device */
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+ int command_mode; /* Wether or not the card is in command mode */
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+ int boot_status; /* The card's boot status */
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+ int io_addr; /* The cards I/O address */
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+ spinlock_t io_lock; /* the lock for io operations */
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+ struct timer_list timer; /* The timer that pings the watchdog */
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+ unsigned long next_heartbeat; /* the next_heartbeat for the timer */
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+} pcwd_private;
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/* module parameters */
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#define WATCHDOG_HEARTBEAT 60 /* 60 sec default heartbeat */
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@@ -161,14 +173,14 @@ static int send_isa_command(int cmd)
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int port0, last_port0; /* Double read for stabilising */
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/* The WCMD bit must be 1 and the command is only 4 bits in size */
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- control_status = (cmd & 0x0F) | 0x80;
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- outb_p(control_status, current_readport + 2);
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+ control_status = (cmd & 0x0F) | WD_WCMD;
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+ outb_p(control_status, pcwd_private.io_addr + 2);
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udelay(ISA_COMMAND_TIMEOUT);
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- port0 = inb_p(current_readport);
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+ port0 = inb_p(pcwd_private.io_addr);
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for (i = 0; i < 25; ++i) {
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last_port0 = port0;
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- port0 = inb_p(current_readport);
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+ port0 = inb_p(pcwd_private.io_addr);
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if (port0 == last_port0)
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break; /* Data is stable */
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@@ -184,7 +196,7 @@ static int set_command_mode(void)
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int i, found=0, count=0;
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/* Set the card into command mode */
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- spin_lock(&io_lock);
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+ spin_lock(&pcwd_private.io_lock);
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while ((!found) && (count < 3)) {
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i = send_isa_command(CMD_ISA_IDLE);
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@@ -192,15 +204,15 @@ static int set_command_mode(void)
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found = 1;
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else if (i == 0xF3) {
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/* Card does not like what we've done to it */
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- outb_p(0x00, current_readport + 2);
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+ outb_p(0x00, pcwd_private.io_addr + 2);
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udelay(1200); /* Spec says wait 1ms */
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- outb_p(0x00, current_readport + 2);
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+ outb_p(0x00, pcwd_private.io_addr + 2);
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udelay(ISA_COMMAND_TIMEOUT);
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}
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count++;
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}
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- spin_unlock(&io_lock);
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- command_mode = found;
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+ spin_unlock(&pcwd_private.io_lock);
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+ pcwd_private.command_mode = found;
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return(found);
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}
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@@ -208,12 +220,95 @@ static int set_command_mode(void)
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static void unset_command_mode(void)
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{
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/* Set the card into normal mode */
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- spin_lock(&io_lock);
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- outb_p(0x00, current_readport + 2);
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+ spin_lock(&pcwd_private.io_lock);
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+ outb_p(0x00, pcwd_private.io_addr + 2);
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udelay(ISA_COMMAND_TIMEOUT);
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- spin_unlock(&io_lock);
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+ spin_unlock(&pcwd_private.io_lock);
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+
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+ pcwd_private.command_mode = 0;
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+}
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+
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+static inline void pcwd_check_temperature_support(void)
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+{
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+ if (inb(pcwd_private.io_addr) != 0xF0)
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+ pcwd_private.supports_temp = 1;
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+}
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+
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+static inline char *get_firmware(void)
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+{
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+ int one, ten, hund, minor;
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+ char *ret;
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+
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+ ret = kmalloc(6, GFP_KERNEL);
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+ if(ret == NULL)
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+ return NULL;
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+
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+ if (set_command_mode()) {
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+ one = send_isa_command(CMD_ISA_VERSION_INTEGER);
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+ ten = send_isa_command(CMD_ISA_VERSION_TENTH);
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+ hund = send_isa_command(CMD_ISA_VERSION_HUNDRETH);
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+ minor = send_isa_command(CMD_ISA_VERSION_MINOR);
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+ sprintf(ret, "%c.%c%c%c", one, ten, hund, minor);
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+ }
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+ else
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+ sprintf(ret, "ERROR");
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+
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+ unset_command_mode();
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+ return(ret);
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+}
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+
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+static inline int pcwd_get_option_switches(void)
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+{
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+ int option_switches=0;
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+
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+ if (set_command_mode()) {
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+ /* Get switch settings */
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+ option_switches = send_isa_command(CMD_ISA_SWITCH_SETTINGS);
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+ }
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+
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+ unset_command_mode();
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+ return(option_switches);
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+}
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+
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+static void pcwd_show_card_info(void)
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+{
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+ char *firmware;
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+ int option_switches;
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+
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+ /* Get some extra info from the hardware (in command/debug/diag mode) */
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+ if (pcwd_private.revision == PCWD_REVISION_A)
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+ printk(KERN_INFO PFX "ISA-PC Watchdog (REV.A) detected at port 0x%04x\n", pcwd_private.io_addr);
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+ else if (pcwd_private.revision == PCWD_REVISION_C) {
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+ firmware = get_firmware();
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+ printk(KERN_INFO PFX "ISA-PC Watchdog (REV.C) detected at port 0x%04x (Firmware version: %s)\n",
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+ pcwd_private.io_addr, firmware);
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+ kfree(firmware);
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+ option_switches = pcwd_get_option_switches();
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+ printk(KERN_INFO PFX "Option switches (0x%02x): Temperature Reset Enable=%s, Power On Delay=%s\n",
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+ option_switches,
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+ ((option_switches & 0x10) ? "ON" : "OFF"),
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+ ((option_switches & 0x08) ? "ON" : "OFF"));
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+
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+ /* Reprogram internal heartbeat to 2 seconds */
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+ if (set_command_mode()) {
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+ send_isa_command(CMD_ISA_DELAY_TIME_2SECS);
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+ unset_command_mode();
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+ }
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+ }
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+
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+ if (pcwd_private.supports_temp)
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+ printk(KERN_INFO PFX "Temperature Option Detected\n");
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+
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+ if (pcwd_private.boot_status & WDIOF_CARDRESET)
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+ printk(KERN_INFO PFX "Previous reboot was caused by the card\n");
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+
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+ if (pcwd_private.boot_status & WDIOF_OVERHEAT) {
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+ printk(KERN_EMERG PFX "Card senses a CPU Overheat. Panicking!\n");
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+ printk(KERN_EMERG PFX "CPU Overheat\n");
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+ }
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- command_mode = 0;
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+ if (pcwd_private.boot_status == 0)
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+ printk(KERN_INFO PFX "No previous trip detected - Cold boot or reset\n");
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}
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static void pcwd_timer_ping(unsigned long data)
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@@ -222,25 +317,25 @@ static void pcwd_timer_ping(unsigned long data)
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/* If we got a heartbeat pulse within the WDT_INTERVAL
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* we agree to ping the WDT */
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- if(time_before(jiffies, next_heartbeat)) {
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+ if(time_before(jiffies, pcwd_private.next_heartbeat)) {
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/* Ping the watchdog */
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- spin_lock(&io_lock);
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- if (revision == PCWD_REVISION_A) {
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+ spin_lock(&pcwd_private.io_lock);
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+ if (pcwd_private.revision == PCWD_REVISION_A) {
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/* Rev A cards are reset by setting the WD_WDRST bit in register 1 */
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- wdrst_stat = inb_p(current_readport);
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+ wdrst_stat = inb_p(pcwd_private.io_addr);
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wdrst_stat &= 0x0F;
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wdrst_stat |= WD_WDRST;
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- outb_p(wdrst_stat, current_readport + 1);
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+ outb_p(wdrst_stat, pcwd_private.io_addr + 1);
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} else {
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/* Re-trigger watchdog by writing to port 0 */
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- outb_p(0x00, current_readport);
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+ outb_p(0x00, pcwd_private.io_addr);
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}
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/* Re-set the timer interval */
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- mod_timer(&timer, jiffies + WDT_INTERVAL);
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+ mod_timer(&pcwd_private.timer, jiffies + WDT_INTERVAL);
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- spin_unlock(&io_lock);
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+ spin_unlock(&pcwd_private.io_lock);
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} else {
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printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
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}
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@@ -250,19 +345,19 @@ static int pcwd_start(void)
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{
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int stat_reg;
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- next_heartbeat = jiffies + (heartbeat * HZ);
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+ pcwd_private.next_heartbeat = jiffies + (heartbeat * HZ);
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/* Start the timer */
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- mod_timer(&timer, jiffies + WDT_INTERVAL);
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+ mod_timer(&pcwd_private.timer, jiffies + WDT_INTERVAL);
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/* Enable the port */
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- if (revision == PCWD_REVISION_C) {
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- spin_lock(&io_lock);
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- outb_p(0x00, current_readport + 3);
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+ if (pcwd_private.revision == PCWD_REVISION_C) {
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+ spin_lock(&pcwd_private.io_lock);
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+ outb_p(0x00, pcwd_private.io_addr + 3);
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udelay(ISA_COMMAND_TIMEOUT);
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- stat_reg = inb_p(current_readport + 2);
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- spin_unlock(&io_lock);
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- if (stat_reg & 0x10) {
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+ stat_reg = inb_p(pcwd_private.io_addr + 2);
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+ spin_unlock(&pcwd_private.io_lock);
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+ if (stat_reg & WD_WDIS) {
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printk(KERN_INFO PFX "Could not start watchdog\n");
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return -EIO;
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}
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@@ -275,18 +370,18 @@ static int pcwd_stop(void)
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int stat_reg;
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/* Stop the timer */
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- del_timer(&timer);
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+ del_timer(&pcwd_private.timer);
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/* Disable the board */
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- if (revision == PCWD_REVISION_C) {
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- spin_lock(&io_lock);
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- outb_p(0xA5, current_readport + 3);
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+ 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;
|
|
|
}
|
|
@@ -297,7 +392,7 @@ static int pcwd_stop(void)
|
|
|
static int pcwd_keepalive(void)
|
|
|
{
|
|
|
/* user land ping */
|
|
|
- next_heartbeat = jiffies + (heartbeat * HZ);
|
|
|
+ pcwd_private.next_heartbeat = jiffies + (heartbeat * HZ);
|
|
|
return 0;
|
|
|
}
|
|
|
|
|
@@ -315,23 +410,23 @@ static int pcwd_get_status(int *status)
|
|
|
int card_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);
|
|
|
+ card_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);
|
|
|
+ card_status = inb(pcwd_private.io_addr + 1);
|
|
|
}
|
|
|
- spin_unlock(&io_lock);
|
|
|
+ spin_unlock(&pcwd_private.io_lock);
|
|
|
|
|
|
- if (revision == PCWD_REVISION_A) {
|
|
|
+ if (pcwd_private.revision == PCWD_REVISION_A) {
|
|
|
if (card_status & WD_WDRST)
|
|
|
*status |= WDIOF_CARDRESET;
|
|
|
|
|
@@ -360,10 +455,10 @@ static int pcwd_get_status(int *status)
|
|
|
|
|
|
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);
|
|
|
+ if (pcwd_private.revision == PCWD_REVISION_C) {
|
|
|
+ spin_lock(&pcwd_private.io_lock);
|
|
|
+ outb_p(0x00, pcwd_private.io_addr + 1); /* clear reset status */
|
|
|
+ spin_unlock(&pcwd_private.io_lock);
|
|
|
}
|
|
|
return 0;
|
|
|
}
|
|
@@ -371,20 +466,20 @@ static int pcwd_clear_status(void)
|
|
|
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);
|
|
|
|
|
|
return 0;
|
|
|
}
|
|
@@ -425,7 +520,7 @@ static int pcwd_ioctl(struct inode *inode, struct file *file,
|
|
|
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))
|
|
@@ -434,7 +529,7 @@ static int pcwd_ioctl(struct inode *inode, struct file *file,
|
|
|
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;
|
|
@@ -550,7 +645,7 @@ static ssize_t pcwd_temp_read(struct file *file, char __user *buf, size_t count,
|
|
|
|
|
|
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);
|
|
@@ -616,68 +711,24 @@ static struct notifier_block pcwd_notifier = {
|
|
|
* 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)
|
|
@@ -692,104 +743,66 @@ static int __devinit pcwatchdog_init(int base_addr)
|
|
|
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;
|
|
|
- }
|
|
|
+ pcwd_check_temperature_support();
|
|
|
|
|
|
- if (supports_temp)
|
|
|
- printk(KERN_INFO PFX "Temperature Option Detected\n");
|
|
|
-
|
|
|
- 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;
|
|
|
}
|
|
|
}
|
|
@@ -798,11 +811,11 @@ static int __devinit pcwatchdog_init(int base_addr)
|
|
|
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;
|
|
|
}
|
|
|
|
|
@@ -820,11 +833,12 @@ static void __devexit pcwatchdog_exit(void)
|
|
|
|
|
|
/* 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--;
|
|
|
}
|
|
|
|
|
|
/*
|
|
@@ -887,7 +901,7 @@ static int __init pcwd_init_module(void)
|
|
|
{
|
|
|
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])) {
|
|
@@ -906,7 +920,7 @@ static int __init pcwd_init_module(void)
|
|
|
|
|
|
static void __exit pcwd_cleanup_module(void)
|
|
|
{
|
|
|
- if (current_readport)
|
|
|
+ if (pcwd_private.io_addr)
|
|
|
pcwatchdog_exit();
|
|
|
return;
|
|
|
}
|