pcwd_usb.c File Reference

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/usb.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/hid.h>
#include <linux/uaccess.h>

Go to the source code of this file.

Data Structures
struct	usb_pcwd_private

Macros
#define	pr_fmt(fmt)   KBUILD_MODNAME ": " fmt
#define	DEBUG
#define	dbg(format,...)
#define	DRIVER_VERSION   "1.02"
#define	DRIVER_AUTHOR   "Wim Van Sebroeck <[email protected]>"
#define	DRIVER_DESC   "Berkshire USB-PC Watchdog driver"
#define	DRIVER_LICENSE   "GPL"
#define	DRIVER_NAME   "pcwd_usb"
#define	WATCHDOG_HEARTBEAT
#define	USB_PCWD_VENDOR_ID   0x0c98
#define	USB_PCWD_PRODUCT_ID   0x1140
#define	USB_COMMAND_TIMEOUT   250
#define	CMD_READ_TEMP
#define	CMD_TRIGGER   CMD_READ_TEMP
#define	CMD_GET_STATUS   0x04 /* Get Status Information */
#define	CMD_GET_FIRMWARE_VERSION   0x08 /* Get Firmware Version */
#define	CMD_GET_DIP_SWITCH_SETTINGS   0x0c /* Get Dip Switch Settings */
#define	CMD_READ_WATCHDOG_TIMEOUT   0x18 /* Read Current Watchdog Time */
#define	CMD_WRITE_WATCHDOG_TIMEOUT   0x19 /* Write Current WatchdogTime */
#define	CMD_ENABLE_WATCHDOG   0x30 /* Enable / Disable Watchdog */
#define	CMD_DISABLE_WATCHDOG   CMD_ENABLE_WATCHDOG

Functions
	MODULE_AUTHOR (DRIVER_AUTHOR)
	MODULE_DESCRIPTION (DRIVER_DESC)
	MODULE_LICENSE (DRIVER_LICENSE)
	MODULE_ALIAS_MISCDEV (WATCHDOG_MINOR)
	MODULE_ALIAS_MISCDEV (TEMP_MINOR)
	module_param (debug, int, 0)
	MODULE_PARM_DESC (debug,"Debug enabled or not")
	module_param (heartbeat, int, 0)
	MODULE_PARM_DESC (heartbeat,"Watchdog heartbeat in seconds. ""(0<heartbeat<65536 or 0=delay-time from dip-switches, default="__MODULE_STRING(WATCHDOG_HEARTBEAT)")")
	module_param (nowayout, bool, 0)
	MODULE_PARM_DESC (nowayout,"Watchdog cannot be stopped once started (default="__MODULE_STRING(WATCHDOG_NOWAYOUT)")")
	MODULE_DEVICE_TABLE (usb, usb_pcwd_table)
	module_usb_driver (usb_pcwd_driver)

Macro Definition Documentation

#define CMD_DISABLE_WATCHDOG   CMD_ENABLE_WATCHDOG

Definition at line 118 of file pcwd_usb.c.

#define CMD_ENABLE_WATCHDOG   0x30 /* Enable / Disable Watchdog */

Definition at line 117 of file pcwd_usb.c.

#define CMD_GET_DIP_SWITCH_SETTINGS   0x0c /* Get Dip Switch Settings */

Definition at line 114 of file pcwd_usb.c.

#define CMD_GET_FIRMWARE_VERSION   0x08 /* Get Firmware Version */

Definition at line 113 of file pcwd_usb.c.

#define CMD_GET_STATUS   0x04 /* Get Status Information */

Definition at line 112 of file pcwd_usb.c.

#define CMD_READ_TEMP

Value:

0x02    /* Read Temperature;
                            Re-trigger Watchdog */

Definition at line 110 of file pcwd_usb.c.

#define CMD_READ_WATCHDOG_TIMEOUT   0x18 /* Read Current Watchdog Time */

Definition at line 115 of file pcwd_usb.c.

#define CMD_TRIGGER   CMD_READ_TEMP

Definition at line 111 of file pcwd_usb.c.

#define CMD_WRITE_WATCHDOG_TIMEOUT   0x19 /* Write Current WatchdogTime */

Definition at line 116 of file pcwd_usb.c.

#define dbg	(		format,
			...
	)

Value:

do {                            \
    if (debug)                  \
        pr_debug(format "\n", ##__VA_ARGS__);   \
} while (0)

Definition at line 59 of file pcwd_usb.c.

#define DEBUG

Definition at line 57 of file pcwd_usb.c.

#define DRIVER_AUTHOR   "Wim Van Sebroeck <[email protected]>"

Definition at line 67 of file pcwd_usb.c.

#define DRIVER_DESC   "Berkshire USB-PC Watchdog driver"

Definition at line 68 of file pcwd_usb.c.

#define DRIVER_LICENSE   "GPL"

Definition at line 69 of file pcwd_usb.c.

#define DRIVER_NAME   "pcwd_usb"

Definition at line 70 of file pcwd_usb.c.

#define DRIVER_VERSION   "1.02"

Definition at line 66 of file pcwd_usb.c.

#define pr_fmt

(

fmt

)

KBUILD_MODNAME ": " fmt

Definition at line 27 of file pcwd_usb.c.

#define USB_COMMAND_TIMEOUT   250

Definition at line 107 of file pcwd_usb.c.

#define USB_PCWD_PRODUCT_ID   0x1140

Definition at line 96 of file pcwd_usb.c.

#define USB_PCWD_VENDOR_ID   0x0c98

Definition at line 95 of file pcwd_usb.c.

#define WATCHDOG_HEARTBEAT

Value:

0   /* default heartbeat =
                        delay-time from dip-switches */

Definition at line 82 of file pcwd_usb.c.

Function Documentation

MODULE_ALIAS_MISCDEV

(

WATCHDOG_MINOR

)

MODULE_ALIAS_MISCDEV

(

TEMP_MINOR

)

MODULE_AUTHOR

(

DRIVER_AUTHOR

)

MODULE_DESCRIPTION

(

DRIVER_DESC

)

MODULE_DEVICE_TABLE	(	usb	,
		usb_pcwd_table
	)

MODULE_LICENSE

(

DRIVER_LICENSE

)

module_param	(	debug	,
		int	,
		0
	)

module_param	(	heartbeat	,
		int	,
		0
	)

module_param	(	nowayout	,
		bool	,
		0
	)

MODULE_PARM_DESC	(	debug	,
		"Debug enabled or not"
	)

MODULE_PARM_DESC	(	heartbeat	,
		"Watchdog heartbeat in seconds. ""(0<heartbeat<65536 or 0=delay-time from dip-switches, default="__MODULE_STRING(WATCHDOG_HEARTBEAT)")"
	)

MODULE_PARM_DESC	(	nowayout	,
		"Watchdog cannot be stopped once started (default="__MODULE_STRING(WATCHDOG_NOWAYOUT)")"
	)

module_usb_driver

(

usb_pcwd_driver

)