[WATCHDOG] v2.6.3 pcwd_usb-watchdog
From: Wim Van Sebroeck (wim_at_iguana.be)
Date: 02/29/04
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Date: Sun, 29 Feb 2004 23:05:51 +0100 To: Linus Torvalds <torvalds@osdl.org>, Andrew Morton <akpm@osdl.org>
Hi Linus, Andrew,
I added 2 extra changesets since yesterday, so if you do a
bk pull http://linux-watchdog.bkbits.net/linux-2.6-watchdog
You will get updates for the following files:
arch/sparc64/Kconfig | 22
drivers/char/watchdog/Kconfig | 46 +
drivers/char/watchdog/Makefile | 3
drivers/char/watchdog/cpu5wdt.c | 1
drivers/char/watchdog/eurotechwdt.c | 1
drivers/char/watchdog/ib700wdt.c | 1
drivers/char/watchdog/machzwd.c | 1
drivers/char/watchdog/mixcomwd.c | 3
drivers/char/watchdog/pcwd.c | 5
drivers/char/watchdog/pcwd_usb.c | 810 +++++++++++++++++++++++++++++++++++
drivers/char/watchdog/sa1100_wdt.c | 1
drivers/char/watchdog/sc1200wdt.c | 1
drivers/char/watchdog/w83627hf_wdt.c | 2
drivers/char/watchdog/w83877f_wdt.c | 1
drivers/char/watchdog/wdt285.c | 1
drivers/char/watchdog/wdt977.c | 2
drivers/char/watchdog/wdt_pci.c | 2
17 files changed, 878 insertions(+), 25 deletions(-)
And these are the ChangeSets:
<wim@iguana.be> (04/02/29 1.1628)
[WATCHDOG] v2.6.3 pcwd_usb-watchdog
Add the Berkshire Products USB-PC Watchdog driver
<wim@iguana.be> (04/02/29 1.1629)
[WATCHDOG] v2.6.3 MODULE_*-patch
Add MODULE_* info
<wim@iguana.be> (04/02/29 1.1630)
[WATCHDOG/SPARC64] v2.6.3 Kconfig-WATCHDOG_CP1XXX/WATCHDOG_RIO-patch
Move WATCHDOG_CP1XXX and WATCHDOG_RIO for SPARC64 architecture
from arch/sparc64/Kconfig to drivers/char/watchdog/Kconfig
and made them dependant of WATCHDOG also
The ChangeSets can also be looked at on:
http://linux-watchdog.bkbits.net:8080/linux-2.6-watchdog
For completeness, I added the patches below.
Greetings,
Wim.
================================================================================
diff -Nru a/drivers/char/watchdog/Kconfig b/drivers/char/watchdog/Kconfig
--- a/drivers/char/watchdog/Kconfig Sun Feb 29 22:53:13 2004
+++ b/drivers/char/watchdog/Kconfig Sun Feb 29 22:53:13 2004
@@ -455,4 +455,26 @@
Fahrenheit. This works only if you have a WDT501P watchdog board
installed.
+#
+# USB-based Watchdog Cards
+#
+
+comment "USB-based Watchdog Cards"
+ depends on WATCHDOG && USB
+
+config USBPCWATCHDOG
+ tristate "Berkshire Products USB-PC Watchdog"
+ depends on WATCHDOG && USB
+ ---help---
+ This is the driver for the Berkshire Products USB-PC Watchdog card.
+ This card simply watches your kernel to make sure it doesn't freeze,
+ and if it does, it reboots your computer after a certain amount of
+ time. The card can also monitor the internal temperature of the PC.
+ More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
+
+ To compile this driver as a module, choose M here: the
+ module will be called pcwd_usb.
+
+ Most people will say N.
+
endmenu
diff -Nru a/drivers/char/watchdog/Makefile b/drivers/char/watchdog/Makefile
--- a/drivers/char/watchdog/Makefile Sun Feb 29 22:53:13 2004
+++ b/drivers/char/watchdog/Makefile Sun Feb 29 22:53:13 2004
@@ -1,5 +1,5 @@
#
-# Makefile for the kernel character device drivers.
+# Makefile for the WatchDog device drivers.
#
# Only one watchdog can succeed. We probe the hardware watchdog
@@ -35,3 +35,4 @@
obj-$(CONFIG_AMD7XX_TCO) += amd7xx_tco.o
obj-$(CONFIG_INDYDOG) += indydog.o
obj-$(CONFIG_PCIPCWATCHDOG) += pcwd_pci.o
+obj-$(CONFIG_USBPCWATCHDOG) += pcwd_usb.o
diff -Nru a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/drivers/char/watchdog/pcwd_usb.c Sun Feb 29 22:53:13 2004
@@ -0,0 +1,810 @@
+/*
+ * Berkshire USB-PC Watchdog Card Driver
+ *
+ * (c) Copyright 2004 Wim Van Sebroeck <wim@iguana.be>.
+ *
+ * Based on source code of the following authors:
+ * Ken Hollis <kenji@bitgate.com>,
+ * Alan Cox <alan@redhat.com>,
+ * Matt Domsch <Matt_Domsch@dell.com>,
+ * Rob Radez <rob@osinvestor.com>,
+ * Greg Kroah-Hartman <greg@kroah.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Neither Wim Van Sebroeck nor Iguana vzw. admit liability nor
+ * provide warranty for any of this software. This material is
+ * provided "AS-IS" and at no charge.
+ *
+ * Thanks also to Simon Machell at Berkshire Products Inc. for
+ * providing the test hardware. More info is available at
+ * http://www.berkprod.com/ or http://www.pcwatchdog.com/
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/miscdevice.h>
+#include <linux/watchdog.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+#include <linux/fs.h>
+#include <linux/smp_lock.h>
+#include <linux/completion.h>
+#include <asm/uaccess.h>
+#include <linux/usb.h>
+
+
+#ifdef CONFIG_USB_DEBUG
+ static int debug = 1;
+#else
+ static int debug;
+#endif
+
+/* Use our own dbg macro */
+#undef dbg
+#define dbg(format, arg...) do { if (debug) printk(KERN_DEBUG PFX format "\n" , ## arg); } while (0)
+
+
+/* Module and Version Information */
+#define DRIVER_VERSION "v1.00 (28/02/2004)"
+#define DRIVER_AUTHOR "Wim Van Sebroeck <wim@iguana.be>"
+#define DRIVER_DESC "Berkshire USB-PC Watchdog driver"
+#define DRIVER_LICENSE "GPL"
+#define DRIVER_NAME "pcwd_usb"
+#define PFX DRIVER_NAME ": "
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE(DRIVER_LICENSE);
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
+MODULE_ALIAS_MISCDEV(TEMP_MINOR);
+
+/* Module Parameters */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
+#define WATCHDOG_HEARTBEAT 2 /* 2 sec default heartbeat */
+static int heartbeat = WATCHDOG_HEARTBEAT;
+module_param(heartbeat, int, 0);
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+
+#ifdef CONFIG_WATCHDOG_NOWAYOUT
+static int nowayout = 1;
+#else
+static int nowayout = 0;
+#endif
+
+module_param(nowayout, int, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)");
+
+/* The vendor and product id's for the USB-PC Watchdog card */
+#define USB_PCWD_VENDOR_ID 0x0c98
+#define USB_PCWD_PRODUCT_ID 0x1140
+
+/* table of devices that work with this driver */
+static struct usb_device_id usb_pcwd_table [] = {
+ { USB_DEVICE(USB_PCWD_VENDOR_ID, USB_PCWD_PRODUCT_ID) },
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE (usb, usb_pcwd_table);
+
+/* according to documentation max. time to process a command for the USB
+ * watchdog card is 100 or 200 ms, so we give it 250 ms to do it's job */
+#define USB_COMMAND_TIMEOUT 250
+
+/* Watchdog's internal commands */
+#define CMD_READ_TEMP 0x02 /* Read Temperature; Re-trigger Watchdog */
+#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 Watchdog Time */
+#define CMD_ENABLE_WATCHDOG 0x30 /* Enable / Disable Watchdog */
+#define CMD_DISABLE_WATCHDOG CMD_ENABLE_WATCHDOG
+
+/* Some defines that I like to be somewhere else like include/linux/usb_hid.h */
+#define HID_REQ_SET_REPORT 0x09
+#define HID_DT_REPORT (USB_TYPE_CLASS | 0x02)
+
+/* We can only use 1 card due to the /dev/watchdog restriction */
+static int cards_found;
+
+/* some internal variables */
+static unsigned long is_active;
+static char expect_release;
+
+/* Structure to hold all of our device specific stuff */
+struct usb_pcwd_private {
+ struct usb_device * udev; /* save off the usb device pointer */
+ struct usb_interface * interface; /* the interface for this device */
+
+ unsigned int interface_number; /* the interface number used for cmd's */
+
+ unsigned char * intr_buffer; /* the buffer to intr data */
+ dma_addr_t intr_dma; /* the dma address for the intr buffer */
+ size_t intr_size; /* the size of the intr buffer */
+ struct urb * intr_urb; /* the urb used for the intr pipe */
+
+ unsigned char cmd_command; /* The command that is reported back */
+ unsigned char cmd_data_msb; /* The data MSB that is reported back */
+ unsigned char cmd_data_lsb; /* The data LSB that is reported back */
+ atomic_t cmd_received; /* true if we received a report after a command */
+
+ int exists; /* Wether or not the device exists */
+ struct semaphore sem; /* locks this structure */
+};
+static struct usb_pcwd_private *usb_pcwd_device;
+
+/* prevent races between open() and disconnect() */
+static DECLARE_MUTEX (disconnect_sem);
+
+/* local function prototypes */
+static int usb_pcwd_probe (struct usb_interface *interface, const struct usb_device_id *id);
+static void usb_pcwd_disconnect (struct usb_interface *interface);
+
+/* usb specific object needed to register this driver with the usb subsystem */
+static struct usb_driver usb_pcwd_driver = {
+ .owner = THIS_MODULE,
+ .name = DRIVER_NAME,
+ .probe = usb_pcwd_probe,
+ .disconnect = usb_pcwd_disconnect,
+ .id_table = usb_pcwd_table,
+};
+
+
+static void usb_pcwd_intr_done(struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_pcwd_private *usb_pcwd = (struct usb_pcwd_private *)urb->context;
+ unsigned char *data = usb_pcwd->intr_buffer;
+ int retval;
+
+ switch (urb->status) {
+ case 0: /* success */
+ break;
+ case -ECONNRESET: /* unlink */
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ return;
+ /* -EPIPE: should clear the halt */
+ default: /* error */
+ dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
+ goto resubmit;
+ }
+
+ dbg("received following data cmd=0x%02x msb=0x%02x lsb=0x%02x",
+ data[0], data[1], data[2]);
+
+ usb_pcwd->cmd_command = data[0];
+ usb_pcwd->cmd_data_msb = data[1];
+ usb_pcwd->cmd_data_lsb = data[2];
+
+ /* notify anyone waiting that the cmd has finished */
+ atomic_set (&usb_pcwd->cmd_received, 1);
+
+resubmit:
+ retval = usb_submit_urb (urb, GFP_ATOMIC);
+ if (retval)
+ printk(KERN_ERR PFX "can't resubmit intr, usb_submit_urb failed with result %d\n",
+ retval);
+}
+
+static int usb_pcwd_send_command(struct usb_pcwd_private *usb_pcwd, unsigned char cmd,
+ unsigned char *msb, unsigned char *lsb)
+{
+ int got_response, count;
+ unsigned char buf[6];
+
+ /* We will not send any commands if the USB PCWD device does not exist */
+ if ((!usb_pcwd) || (!usb_pcwd->exists))
+ return -1;
+
+ /* The USB PC Watchdog uses a 6 byte report format. The board currently uses
+ * only 3 of the six bytes of the report. */
+ buf[0] = cmd; /* Byte 0 = CMD */
+ buf[1] = *msb; /* Byte 1 = Data MSB */
+ buf[2] = *lsb; /* Byte 2 = Data LSB */
+ buf[3] = buf[4] = buf[5] = 0; /* All other bytes not used */
+
+ dbg("sending following data cmd=0x%02x msb=0x%02x lsb=0x%02x",
+ buf[0], buf[1], buf[2]);
+
+ atomic_set (&usb_pcwd->cmd_received, 0);
+
+ if (usb_control_msg(usb_pcwd->udev, usb_sndctrlpipe(usb_pcwd->udev, 0),
+ HID_REQ_SET_REPORT, HID_DT_REPORT,
+ 0x0200, usb_pcwd->interface_number, buf, sizeof(buf),
+ HZ) != sizeof(buf)) {
+ dbg("usb_pcwd_send_command: error in usb_control_msg for cmd 0x%x 0x%x 0x%x\n", cmd, *msb, *lsb);
+ }
+ /* wait till the usb card processed the command,
+ * with a max. timeout of USB_COMMAND_TIMEOUT */
+ got_response = 0;
+ for (count = 0; (count < USB_COMMAND_TIMEOUT) && (!got_response); count++) {
+ mdelay(1);
+ if (atomic_read (&usb_pcwd->cmd_received))
+ got_response = 1;
+ }
+
+ if ((got_response) && (cmd == usb_pcwd->cmd_command)) {
+ /* read back response */
+ *msb = usb_pcwd->cmd_data_msb;
+ *lsb = usb_pcwd->cmd_data_lsb;
+ }
+
+ return got_response;
+}
+
+static int usb_pcwd_start(struct usb_pcwd_private *usb_pcwd)
+{
+ unsigned char msb = 0x00;
+ unsigned char lsb = 0x00;
+ int retval;
+
+ /* Enable Watchdog */
+ retval = usb_pcwd_send_command(usb_pcwd, CMD_ENABLE_WATCHDOG, &msb, &lsb);
+
+ if ((retval == 0) || (lsb == 0)) {
+ printk(KERN_ERR PFX "Card did not acknowledge enable attempt\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int usb_pcwd_stop(struct usb_pcwd_private *usb_pcwd)
+{
+ unsigned char msb = 0xA5;
+ unsigned char lsb = 0xC3;
+ int retval;
+
+ /* Disable Watchdog */
+ retval = usb_pcwd_send_command(usb_pcwd, CMD_DISABLE_WATCHDOG, &msb, &lsb);
+
+ if ((retval == 0) || (lsb != 0)) {
+ printk(KERN_ERR PFX "Card did not acknowledge disable attempt\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int usb_pcwd_keepalive(struct usb_pcwd_private *usb_pcwd)
+{
+ unsigned char dummy;
+
+ /* Re-trigger Watchdog */
+ usb_pcwd_send_command(usb_pcwd, CMD_TRIGGER, &dummy, &dummy);
+
+ return 0;
+}
+
+static int usb_pcwd_set_heartbeat(struct usb_pcwd_private *usb_pcwd, int t)
+{
+ unsigned char msb = t / 256;
+ unsigned char lsb = t % 256;
+
+ if ((t < 0x0001) || (t > 0xFFFF))
+ return -EINVAL;
+
+ /* Write new heartbeat to watchdog */
+ usb_pcwd_send_command(usb_pcwd, CMD_WRITE_WATCHDOG_TIMEOUT, &msb, &lsb);
+
+ heartbeat = t;
+ return 0;
+}
+
+static int usb_pcwd_get_temperature(struct usb_pcwd_private *usb_pcwd, int *temperature)
+{
+ unsigned char msb, lsb;
+
+ usb_pcwd_send_command(usb_pcwd, CMD_READ_TEMP, &msb, &lsb);
+
+ /*
+ * Convert celsius to fahrenheit, since this was
+ * the decided 'standard' for this return value.
+ */
+ *temperature = (lsb * 9 / 5) + 32;
+
+ return 0;
+}
+
+/*
+ * /dev/watchdog handling
+ */
+
+static ssize_t usb_pcwd_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
+{
+ /* Can't seek (pwrite) on this device */
+ if (ppos != &file->f_pos)
+ return -ESPIPE;
+
+ /* See if we got the magic character 'V' and reload the timer */
+ if (len) {
+ if (!nowayout) {
+ size_t i;
+
+ /* note: just in case someone wrote the magic character
+ * five months ago... */
+ expect_release = 0;
+
+ /* scan to see whether or not we got the magic character */
+ for (i = 0; i != len; i++) {
+ char c;
+ if(get_user(c, data+i))
+ return -EFAULT;
+ if (c == 'V')
+ expect_release = 42;
+ }
+ }
+
+ /* someone wrote to us, we should reload the timer */
+ usb_pcwd_keepalive(usb_pcwd_device);
+ }
+ return len;
+}
+
+static int usb_pcwd_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ static struct watchdog_info ident = {
+ .options = WDIOF_KEEPALIVEPING |
+ WDIOF_SETTIMEOUT |
+ WDIOF_MAGICCLOSE,
+ .firmware_version = 1,
+ .identity = DRIVER_NAME,
+ };
+
+ switch (cmd) {
+ case WDIOC_GETSUPPORT:
+ return copy_to_user((struct watchdog_info *) arg, &ident,
+ sizeof (ident)) ? -EFAULT : 0;
+
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, (int *) arg);
+
+ case WDIOC_GETTEMP:
+ {
+ int temperature;
+
+ if (usb_pcwd_get_temperature(usb_pcwd_device, &temperature))
+ return -EFAULT;
+
+ return put_user(temperature, (int *) arg);
+ }
+
+ case WDIOC_KEEPALIVE:
+ usb_pcwd_keepalive(usb_pcwd_device);
+ return 0;
+
+ case WDIOC_SETOPTIONS:
+ {
+ int new_options, retval = -EINVAL;
+
+ if (get_user (new_options, (int *) arg))
+ return -EFAULT;
+
+ if (new_options & WDIOS_DISABLECARD) {
+ usb_pcwd_stop(usb_pcwd_device);
+ retval = 0;
+ }
+
+ if (new_options & WDIOS_ENABLECARD) {
+ usb_pcwd_start(usb_pcwd_device);
+ retval = 0;
+ }
+
+ return retval;
+ }
+
+ case WDIOC_SETTIMEOUT:
+ {
+ int new_heartbeat;
+
+ if (get_user(new_heartbeat, (int *) arg))
+ return -EFAULT;
+
+ if (usb_pcwd_set_heartbeat(usb_pcwd_device, new_heartbeat))
+ return -EINVAL;
+
+ usb_pcwd_keepalive(usb_pcwd_device);
+ /* Fall */
+ }
+
+ case WDIOC_GETTIMEOUT:
+ return put_user(heartbeat, (int *)arg);
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+static int usb_pcwd_open(struct inode *inode, struct file *file)
+{
+ /* /dev/watchdog can only be opened once */
+ if (test_and_set_bit(0, &is_active))
+ return -EBUSY;
+
+ /* Activate */
+ usb_pcwd_start(usb_pcwd_device);
+ usb_pcwd_keepalive(usb_pcwd_device);
+ return 0;
+}
+
+static int usb_pcwd_release(struct inode *inode, struct file *file)
+{
+ /*
+ * Shut off the timer.
+ */
+ if (expect_release == 42) {
+ usb_pcwd_stop(usb_pcwd_device);
+ } else {
+ printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ usb_pcwd_keepalive(usb_pcwd_device);
+ }
+ clear_bit(0, &is_active);
+ expect_release = 0;
+ return 0;
+}
+
+/*
+ * /dev/temperature handling
+ */
+
+static ssize_t usb_pcwd_temperature_read(struct file *file, char *data,
+ size_t len, loff_t *ppos)
+{
+ int temperature;
+
+ /* Can't seek (pwrite) on this device */
+ if (ppos != &file->f_pos)
+ return -ESPIPE;
+
+ if (usb_pcwd_get_temperature(usb_pcwd_device, &temperature))
+ return -EFAULT;
+
+ if (copy_to_user (data, &temperature, 1))
+ return -EFAULT;
+
+ return 1;
+}
+
+static int usb_pcwd_temperature_open(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static int usb_pcwd_temperature_release(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+/*
+ * Notify system
+ */
+
+static int usb_pcwd_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+{
+ if (code==SYS_DOWN || code==SYS_HALT) {
+ /* Turn the WDT off */
+ usb_pcwd_stop(usb_pcwd_device);
+ }
+
+ return NOTIFY_DONE;
+}
+
+/*
+ * Kernel Interfaces
+ */
+
+static struct file_operations usb_pcwd_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = usb_pcwd_write,
+ .ioctl = usb_pcwd_ioctl,
+ .open = usb_pcwd_open,
+ .release = usb_pcwd_release,
+};
+
+static struct miscdevice usb_pcwd_miscdev = {
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &usb_pcwd_fops,
+};
+
+static struct file_operations usb_pcwd_temperature_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = usb_pcwd_temperature_read,
+ .open = usb_pcwd_temperature_open,
+ .release = usb_pcwd_temperature_release,
+};
+
+static struct miscdevice usb_pcwd_temperature_miscdev = {
+ .minor = TEMP_MINOR,
+ .name = "temperature",
+ .fops = &usb_pcwd_temperature_fops,
+};
+
+static struct notifier_block usb_pcwd_notifier = {
+ .notifier_call = usb_pcwd_notify_sys,
+};
+
+/**
+ * usb_pcwd_delete
+ */
+static inline void usb_pcwd_delete (struct usb_pcwd_private *usb_pcwd)
+{
+ if (usb_pcwd->intr_urb != NULL)
+ usb_free_urb (usb_pcwd->intr_urb);
+ if (usb_pcwd->intr_buffer != NULL)
+ usb_buffer_free(usb_pcwd->udev, usb_pcwd->intr_size,
+ usb_pcwd->intr_buffer, usb_pcwd->intr_dma);
+ kfree (usb_pcwd);
+}
+
+/**
+ * usb_pcwd_probe
+ *
+ * Called by the usb core when a new device is connected that it thinks
+ * this driver might be interested in.
+ */
+static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(interface);
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+ struct usb_pcwd_private *usb_pcwd = NULL;
+ int pipe, maxp;
+ int retval = -ENOMEM;
+ int got_fw_rev;
+ unsigned char fw_rev_major, fw_rev_minor;
+ char fw_ver_str[20];
+ unsigned char option_switches, dummy;
+
+ /* See if the device offered us matches what we can accept */
+ if ((udev->descriptor.idVendor != USB_PCWD_VENDOR_ID) ||
+ (udev->descriptor.idProduct != USB_PCWD_PRODUCT_ID)) {
+ return -ENODEV;
+ }
+
+ cards_found++;
+ if (cards_found > 1) {
+ printk(KERN_ERR PFX "This driver only supports 1 device\n");
+ return -ENODEV;
+ }
+
+ /* get the active interface descriptor */
+ iface_desc = &interface->altsetting[interface->act_altsetting];
+
+ /* check out that we have a HID device */
+ if (!(iface_desc->desc.bInterfaceClass == USB_CLASS_HID)) {
+ printk(KERN_ERR PFX "The device isn't a Human Interface Device\n");
+ return -ENODEV;
+ }
+
+ /* check out the endpoint: it has to be Interrupt & IN */
+ endpoint = &iface_desc->endpoint[0].desc;
+
+ if (!((endpoint->bEndpointAddress & USB_DIR_IN) &&
+ ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_INT))) {
+ /* we didn't find a Interrupt endpoint with direction IN */
+ printk(KERN_ERR PFX "Couldn't find an INTR & IN endpoint\n");
+ return -ENODEV;
+ }
+
+ /* get a handle to the interrupt data pipe */
+ pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
+ maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+
+ /* allocate memory for our device and initialize it */
+ usb_pcwd = kmalloc (sizeof(struct usb_pcwd_private), GFP_KERNEL);
+ if (usb_pcwd == NULL) {
+ printk(KERN_ERR PFX "Out of memory\n");
+ goto error;
+ }
+ memset (usb_pcwd, 0x00, sizeof (*usb_pcwd));
+
+ usb_pcwd_device = usb_pcwd;
+
+ init_MUTEX (&usb_pcwd->sem);
+ usb_pcwd->udev = udev;
+ usb_pcwd->interface = interface;
+ usb_pcwd->interface_number = iface_desc->desc.bInterfaceNumber;
+ usb_pcwd->intr_size = (endpoint->wMaxPacketSize > 8 ? endpoint->wMaxPacketSize : 8);
+
+ /* set up the memory buffer's */
+ if (!(usb_pcwd->intr_buffer = usb_buffer_alloc(udev, usb_pcwd->intr_size, SLAB_ATOMIC, &usb_pcwd->intr_dma))) {
+ printk(KERN_ERR PFX "Out of memory\n");
+ goto error;
+ }
+
+ /* allocate the urb's */
+ usb_pcwd->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!usb_pcwd->intr_urb) {
+ printk(KERN_ERR PFX "Out of memory\n");
+ goto error;
+ }
+
+ /* initialise the intr urb's */
+ usb_fill_int_urb(usb_pcwd->intr_urb, udev, pipe,
+ usb_pcwd->intr_buffer, usb_pcwd->intr_size,
+ usb_pcwd_intr_done, usb_pcwd, endpoint->bInterval);
+ usb_pcwd->intr_urb->transfer_dma = usb_pcwd->intr_dma;
+ usb_pcwd->intr_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+ /* register our interrupt URB with the USB system */
+ if (usb_submit_urb(usb_pcwd->intr_urb, GFP_KERNEL)) {
+ printk(KERN_ERR PFX "Problem registering interrupt URB\n");
+ retval = -EIO; /* failure */
+ goto error;
+ }
+
+ /* The device exists and can be communicated with */
+ usb_pcwd->exists = 1;
+
+ /* disable card */
+ usb_pcwd_stop(usb_pcwd);
+
+ /* Get the Firmware Version */
+ got_fw_rev = usb_pcwd_send_command(usb_pcwd, CMD_GET_FIRMWARE_VERSION, &fw_rev_major, &fw_rev_minor);
+ if (got_fw_rev) {
+ sprintf(fw_ver_str, "%u.%02u", fw_rev_major, fw_rev_minor);
+ } else {
+ sprintf(fw_ver_str, "<card no answer>");
+ }
+
+ printk(KERN_INFO PFX "Found card (Firmware: %s) with temp option\n",
+ fw_ver_str);
+
+ /* Get switch settings */
+ usb_pcwd_send_command(usb_pcwd, CMD_GET_DIP_SWITCH_SETTINGS, &dummy, &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"));
+
+ /* Check that the heartbeat value is within it's range ; if not reset to the default */
+ if (heartbeat < 1 || heartbeat > 0xFFFF) {
+ heartbeat = WATCHDOG_HEARTBEAT;
+ printk(KERN_INFO PFX "heartbeat value must be 0<heartbeat<65536, using %d\n",
+ heartbeat);
+ }
+
+ /* Calculate the watchdog's heartbeat */
+ usb_pcwd_set_heartbeat(usb_pcwd, heartbeat);
+
+ retval = register_reboot_notifier(&usb_pcwd_notifier);
+ if (retval != 0) {
+ printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
+ retval);
+ goto error;
+ }
+
+ retval = misc_register(&usb_pcwd_miscdev);
+ if (retval != 0) {
+ printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, retval);
+ goto err_out_unregister_reboot;
+ }
+
+ retval = misc_register(&usb_pcwd_temperature_miscdev);
+ if (retval != 0) {
+ printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
+ TEMP_MINOR, retval);
+ goto err_out_misc_deregister;
+ }
+
+ /* we can register the device now, as it is ready */
+ usb_set_intfdata (interface, usb_pcwd);
+
+ printk(KERN_INFO PFX "initialized. heartbeat=%d sec (nowayout=%d)\n",
+ heartbeat, nowayout);
+
+ return 0;
+
+err_out_misc_deregister:
+ misc_deregister(&usb_pcwd_miscdev);
+err_out_unregister_reboot:
+ unregister_reboot_notifier(&usb_pcwd_notifier);
+error:
+ usb_pcwd_delete (usb_pcwd);
+ usb_pcwd_device = NULL;
+ return retval;
+}
+
+
+/**
+ * usb_pcwd_disconnect
+ *
+ * Called by the usb core when the device is removed from the system.
+ *
+ * This routine guarantees that the driver will not submit any more urbs
+ * by clearing dev->udev.
+ */
+static void usb_pcwd_disconnect(struct usb_interface *interface)
+{
+ struct usb_pcwd_private *usb_pcwd;
+
+ /* prevent races with open() */
+ down (&disconnect_sem);
+
+ usb_pcwd = usb_get_intfdata (interface);
+ usb_set_intfdata (interface, NULL);
+
+ down (&usb_pcwd->sem);
+
+ /* Stop the timer before we leave */
+ if (!nowayout)
+ usb_pcwd_stop(usb_pcwd);
+
+ /* We should now stop communicating with the USB PCWD device */
+ usb_pcwd->exists = 0;
+
+ /* Deregister */
+ misc_deregister(&usb_pcwd_temperature_miscdev);
+ misc_deregister(&usb_pcwd_miscdev);
+ unregister_reboot_notifier(&usb_pcwd_notifier);
+
+ up (&usb_pcwd->sem);
+
+ /* Delete the USB PCWD device */
+ usb_pcwd_delete(usb_pcwd);
+
+ cards_found--;
+
+ up (&disconnect_sem);
+
+ printk(KERN_INFO PFX "USB PC Watchdog disconnected\n");
+}
+
+
+
+/**
+ * usb_pcwd_init
+ */
+static int __init usb_pcwd_init(void)
+{
+ int result;
+
+ /* register this driver with the USB subsystem */
+ result = usb_register(&usb_pcwd_driver);
+ if (result) {
+ printk(KERN_ERR PFX "usb_register failed. Error number %d\n",
+ result);
+ return result;
+ }
+
+ printk(KERN_INFO PFX DRIVER_DESC " " DRIVER_VERSION "\n");
+ return 0;
+}
+
+
+/**
+ * usb_pcwd_exit
+ */
+static void __exit usb_pcwd_exit(void)
+{
+ /* deregister this driver with the USB subsystem */
+ usb_deregister(&usb_pcwd_driver);
+}
+
+
+module_init (usb_pcwd_init);
+module_exit (usb_pcwd_exit);
diff -Nru a/drivers/char/watchdog/cpu5wdt.c b/drivers/char/watchdog/cpu5wdt.c
--- a/drivers/char/watchdog/cpu5wdt.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/cpu5wdt.c Sun Feb 29 22:53:35 2004
@@ -293,6 +293,7 @@
MODULE_DESCRIPTION("sma cpu5 watchdog driver");
MODULE_SUPPORTED_DEVICE("sma cpu5 watchdog");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
MODULE_PARM(port, "i");
MODULE_PARM_DESC(port, "base address of watchdog card, default is 0x91");
diff -Nru a/drivers/char/watchdog/eurotechwdt.c b/drivers/char/watchdog/eurotechwdt.c
--- a/drivers/char/watchdog/eurotechwdt.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/eurotechwdt.c Sun Feb 29 22:53:35 2004
@@ -503,3 +503,4 @@
MODULE_AUTHOR("Rodolfo Giometti");
MODULE_DESCRIPTION("Driver for Eurotech CPU-1220/1410 on board watchdog");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff -Nru a/drivers/char/watchdog/ib700wdt.c b/drivers/char/watchdog/ib700wdt.c
--- a/drivers/char/watchdog/ib700wdt.c Sun Feb 29 22:53:36 2004
+++ b/drivers/char/watchdog/ib700wdt.c Sun Feb 29 22:53:36 2004
@@ -350,5 +350,6 @@
MODULE_AUTHOR("Charles Howes <chowes@vsol.net>");
MODULE_DESCRIPTION("IB700 SBC watchdog driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
/* end of ib700wdt.c */
diff -Nru a/drivers/char/watchdog/machzwd.c b/drivers/char/watchdog/machzwd.c
--- a/drivers/char/watchdog/machzwd.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/machzwd.c Sun Feb 29 22:53:35 2004
@@ -98,6 +98,7 @@
MODULE_AUTHOR("Fernando Fuganti <fuganti@conectiva.com.br>");
MODULE_DESCRIPTION("MachZ ZF-Logic Watchdog driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
#ifdef CONFIG_WATCHDOG_NOWAYOUT
static int nowayout = 1;
diff -Nru a/drivers/char/watchdog/mixcomwd.c b/drivers/char/watchdog/mixcomwd.c
--- a/drivers/char/watchdog/mixcomwd.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/mixcomwd.c Sun Feb 29 22:53:35 2004
@@ -302,4 +302,7 @@
module_init(mixcomwd_init);
module_exit(mixcomwd_exit);
+MODULE_AUTHOR("Gergely Madarasz <gorgo@itc.hu>");
+MODULE_DESCRIPTION("MixCom Watchdog driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff -Nru a/drivers/char/watchdog/pcwd.c b/drivers/char/watchdog/pcwd.c
--- a/drivers/char/watchdog/pcwd.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/pcwd.c Sun Feb 29 22:53:35 2004
@@ -705,5 +705,8 @@
module_init(pcwatchdog_init);
module_exit(pcwatchdog_exit);
+MODULE_AUTHOR("Ken Hollis <kenji@bitgate.com>");
+MODULE_DESCRIPTION("Berkshire ISA-PC Watchdog driver");
MODULE_LICENSE("GPL");
-
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
+MODULE_ALIAS_MISCDEV(TEMP_MINOR);
diff -Nru a/drivers/char/watchdog/sa1100_wdt.c b/drivers/char/watchdog/sa1100_wdt.c
--- a/drivers/char/watchdog/sa1100_wdt.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/sa1100_wdt.c Sun Feb 29 22:53:35 2004
@@ -218,3 +218,4 @@
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff -Nru a/drivers/char/watchdog/sc1200wdt.c b/drivers/char/watchdog/sc1200wdt.c
--- a/drivers/char/watchdog/sc1200wdt.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/sc1200wdt.c Sun Feb 29 22:53:35 2004
@@ -486,3 +486,4 @@
MODULE_AUTHOR("Zwane Mwaikambo <zwane@commfireservices.com>");
MODULE_DESCRIPTION("Driver for National Semiconductor PC87307/PC97307 watchdog component");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff -Nru a/drivers/char/watchdog/w83627hf_wdt.c b/drivers/char/watchdog/w83627hf_wdt.c
--- a/drivers/char/watchdog/w83627hf_wdt.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/w83627hf_wdt.c Sun Feb 29 22:53:35 2004
@@ -321,4 +321,4 @@
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pádraig Brady <P@draigBrady.com>");
MODULE_DESCRIPTION("w38627hf WDT driver");
-
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff -Nru a/drivers/char/watchdog/w83877f_wdt.c b/drivers/char/watchdog/w83877f_wdt.c
--- a/drivers/char/watchdog/w83877f_wdt.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/w83877f_wdt.c Sun Feb 29 22:53:35 2004
@@ -427,3 +427,4 @@
MODULE_AUTHOR("Scott and Bill Jennings");
MODULE_DESCRIPTION("Driver for watchdog timer in w83877f chip");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff -Nru a/drivers/char/watchdog/wdt285.c b/drivers/char/watchdog/wdt285.c
--- a/drivers/char/watchdog/wdt285.c Sun Feb 29 22:53:35 2004
+++ b/drivers/char/watchdog/wdt285.c Sun Feb 29 22:53:35 2004
@@ -222,6 +222,7 @@
MODULE_AUTHOR("Phil Blundell <pb@nexus.co.uk>");
MODULE_DESCRIPTION("Footbridge watchdog driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
module_param(soft_margin, int, 0);
MODULE_PARM_DESC(soft_margin,"Watchdog timeout in seconds");
diff -Nru a/drivers/char/watchdog/wdt977.c b/drivers/char/watchdog/wdt977.c
--- a/drivers/char/watchdog/wdt977.c Sun Feb 29 22:53:36 2004
+++ b/drivers/char/watchdog/wdt977.c Sun Feb 29 22:53:36 2004
@@ -365,5 +365,7 @@
module_init(nwwatchdog_init);
module_exit(nwwatchdog_exit);
+MODULE_AUTHOR("Woody Suwalski <woody@netwinder.org>");
MODULE_DESCRIPTION("W83977AF Watchdog driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff -Nru a/drivers/char/watchdog/wdt_pci.c b/drivers/char/watchdog/wdt_pci.c
--- a/drivers/char/watchdog/wdt_pci.c Sun Feb 29 22:53:36 2004
+++ b/drivers/char/watchdog/wdt_pci.c Sun Feb 29 22:53:36 2004
@@ -653,3 +653,5 @@
MODULE_AUTHOR("JP Nollmann, Alan Cox");
MODULE_DESCRIPTION("Driver for the ICS PCI watchdog cards");
MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
+MODULE_ALIAS_MISCDEV(TEMP_MINOR);
diff -Nru a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
--- a/arch/sparc64/Kconfig Sun Feb 29 22:53:58 2004
+++ b/arch/sparc64/Kconfig Sun Feb 29 22:53:58 2004
@@ -450,28 +450,6 @@
another UltraSPARC-IIi-cEngine boardset with a 7-segment display,
you should say N to this option.
-config WATCHDOG_CP1XXX
- tristate "CP1XXX Hardware Watchdog support"
- depends on PCI
- ---help---
- This is the driver for the hardware watchdog timers present on
- Sun Microsystems CompactPCI models CP1400 and CP1500.
-
- To compile this driver as a module, choose M here: the
- module will be called cpwatchdog.
-
- If you do not have a CompactPCI model CP1400 or CP1500, or
- another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
- you should say N to this option.
-
-config WATCHDOG_RIO
- tristate "RIO Hardware Watchdog support"
- depends on PCI
- help
- Say Y here to support the hardware watchdog capability on Sun RIO
- machines. The watchdog timeout period is normally one minute but
- can be changed with a boot-time parameter.
-
config CMDLINE_BOOL
bool "Default bootloader kernel arguments"
diff -Nru a/drivers/char/watchdog/Kconfig b/drivers/char/watchdog/Kconfig
--- a/drivers/char/watchdog/Kconfig Sun Feb 29 22:53:58 2004
+++ b/drivers/char/watchdog/Kconfig Sun Feb 29 22:53:58 2004
@@ -339,6 +339,30 @@
To compile this driver as a module, choose M here: the
module will be called shwdt.
+# SPARC64 Architecture
+
+config WATCHDOG_CP1XXX
+ tristate "CP1XXX Hardware Watchdog support"
+ depends on WATCHDOG && SPARC64 && PCI
+ ---help---
+ This is the driver for the hardware watchdog timers present on
+ Sun Microsystems CompactPCI models CP1400 and CP1500.
+
+ To compile this driver as a module, choose M here: the
+ module will be called cpwatchdog.
+
+ If you do not have a CompactPCI model CP1400 or CP1500, or
+ another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
+ you should say N to this option.
+
+config WATCHDOG_RIO
+ tristate "RIO Hardware Watchdog support"
+ depends on WATCHDOG && SPARC64 && PCI
+ help
+ Say Y here to support the hardware watchdog capability on Sun RIO
+ machines. The watchdog timeout period is normally one minute but
+ can be changed with a boot-time parameter.
+
#
# ISA-based Watchdog Cards
#
-
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