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path: root/drivers/char/watchdog/pcwd_usb.c
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Diffstat (limited to 'drivers/char/watchdog/pcwd_usb.c')
-rw-r--r--drivers/char/watchdog/pcwd_usb.c824
1 files changed, 0 insertions, 824 deletions
diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
deleted file mode 100644
index 0f3fd6c9c35..00000000000
--- a/drivers/char/watchdog/pcwd_usb.c
+++ /dev/null
@@ -1,824 +0,0 @@
-/*
- * Berkshire USB-PC Watchdog Card Driver
- *
- * (c) Copyright 2004-2007 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/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/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/usb.h> /* For USB functions */
-#include <linux/slab.h> /* For kmalloc, ... */
-#include <linux/mutex.h> /* For mutex locking */
-#include <linux/hid.h> /* For HID_REQ_SET_REPORT & HID_DT_REPORT */
-
-#include <asm/uaccess.h> /* For copy_to_user/put_user/... */
-
-
-#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 "1.02"
-#define DRIVER_DATE "21 Jan 2007"
-#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 0 /* default heartbeat = delay-time from dip-switches */
-static int heartbeat = WATCHDOG_HEARTBEAT;
-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) ")");
-
-static int nowayout = WATCHDOG_NOWAYOUT;
-module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(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
-
-/* Watchdog's Dip Switch heartbeat values */
-static const int heartbeat_tbl [] = {
- 5, /* OFF-OFF-OFF = 5 Sec */
- 10, /* OFF-OFF-ON = 10 Sec */
- 30, /* OFF-ON-OFF = 30 Sec */
- 60, /* OFF-ON-ON = 1 Min */
- 300, /* ON-OFF-OFF = 5 Min */
- 600, /* ON-OFF-ON = 10 Min */
- 1800, /* ON-ON-OFF = 30 Min */
- 3600, /* ON-ON-ON = 1 hour */
-};
-
-/* 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 mutex mtx; /* locks this structure */
-};
-static struct usb_pcwd_private *usb_pcwd_device;
-
-/* prevent races between open() and disconnect() */
-static DEFINE_MUTEX(disconnect_mutex);
-
-/* 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 = {
- .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 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),
- USB_COMMAND_TIMEOUT) != 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;
-}
-
-static int usb_pcwd_get_timeleft(struct usb_pcwd_private *usb_pcwd, int *time_left)
-{
- unsigned char msb, lsb;
-
- /* Read the time that's left before rebooting */
- /* Note: if the board is not yet armed then we will read 0xFFFF */
- usb_pcwd_send_command(usb_pcwd, CMD_READ_WATCHDOG_TIMEOUT, &msb, &lsb);
-
- *time_left = (msb << 8) + lsb;
-
- return 0;
-}
-
-/*
- * /dev/watchdog handling
- */
-
-static ssize_t usb_pcwd_write(struct file *file, const char __user *data,
- size_t len, loff_t *ppos)
-{
- /* 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)
-{
- void __user *argp = (void __user *)arg;
- int __user *p = argp;
- 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(argp, &ident,
- sizeof (ident)) ? -EFAULT : 0;
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
-
- case WDIOC_GETTEMP:
- {
- int temperature;
-
- if (usb_pcwd_get_temperature(usb_pcwd_device, &temperature))
- return -EFAULT;
-
- return put_user(temperature, p);
- }
-
- case WDIOC_KEEPALIVE:
- usb_pcwd_keepalive(usb_pcwd_device);
- return 0;
-
- case WDIOC_SETOPTIONS:
- {
- int new_options, retval = -EINVAL;
-
- if (get_user (new_options, p))
- 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, p))
- 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, p);
-
- case WDIOC_GETTIMELEFT:
- {
- int time_left;
-
- if (usb_pcwd_get_timeleft(usb_pcwd_device, &time_left))
- return -EFAULT;
-
- return put_user(time_left, p);
- }
-
- default:
- return -ENOTTY;
- }
-}
-
-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 nonseekable_open(inode, file);
-}
-
-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);
- }
- expect_release = 0;
- clear_bit(0, &is_active);
- return 0;
-}
-
-/*
- * /dev/temperature handling
- */
-
-static ssize_t usb_pcwd_temperature_read(struct file *file, char __user *data,
- size_t len, loff_t *ppos)
-{
- int temperature;
-
- 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 nonseekable_open(inode, file);
-}
-
-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 const 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 const 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)
-{
- 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;
-
- 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->cur_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 = kzalloc (sizeof(struct usb_pcwd_private), GFP_KERNEL);
- if (usb_pcwd == NULL) {
- printk(KERN_ERR PFX "Out of memory\n");
- goto error;
- }
-
- usb_pcwd_device = usb_pcwd;
-
- mutex_init(&usb_pcwd->mtx);
- usb_pcwd->udev = udev;
- usb_pcwd->interface = interface;
- usb_pcwd->interface_number = iface_desc->desc.bInterfaceNumber;
- usb_pcwd->intr_size = (le16_to_cpu(endpoint->wMaxPacketSize) > 8 ? le16_to_cpu(endpoint->wMaxPacketSize) : 8);
-
- /* set up the memory buffer's */
- if (!(usb_pcwd->intr_buffer = usb_buffer_alloc(udev, usb_pcwd->intr_size, GFP_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"));
-
- /* If heartbeat = 0 then we use the heartbeat from the dip-switches */
- if (heartbeat == 0)
- heartbeat = heartbeat_tbl[(option_switches & 0x07)];
-
- /* Check that the heartbeat value is within it's range ; if not reset to the default */
- if (usb_pcwd_set_heartbeat(usb_pcwd, heartbeat)) {
- usb_pcwd_set_heartbeat(usb_pcwd, WATCHDOG_HEARTBEAT);
- printk(KERN_INFO PFX "heartbeat value must be 0<heartbeat<65536, using %d\n",
- WATCHDOG_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_temperature_miscdev);
- if (retval != 0) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- TEMP_MINOR, retval);
- goto err_out_unregister_reboot;
- }
-
- 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_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_temperature_miscdev);
-err_out_unregister_reboot:
- unregister_reboot_notifier(&usb_pcwd_notifier);
-error:
- if (usb_pcwd)
- 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() */
- mutex_lock(&disconnect_mutex);
-
- usb_pcwd = usb_get_intfdata (interface);
- usb_set_intfdata (interface, NULL);
-
- mutex_lock(&usb_pcwd->mtx);
-
- /* 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_miscdev);
- misc_deregister(&usb_pcwd_temperature_miscdev);
- unregister_reboot_notifier(&usb_pcwd_notifier);
-
- mutex_unlock(&usb_pcwd->mtx);
-
- /* Delete the USB PCWD device */
- usb_pcwd_delete(usb_pcwd);
-
- cards_found--;
-
- mutex_unlock(&disconnect_mutex);
-
- 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 " v" DRIVER_VERSION " (" DRIVER_DATE ")\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);