hw/watchdog.h

   1 /*
   2  * Virtual hardware watchdog.
   3  *
   4  * Copyright (C) 2009 Red Hat Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  19  * USA.
  20  *
  21  * By Richard W.M. Jones (rjones@redhat.com).
  22  */
  23
  24 #ifndef QEMU_WATCHDOG_H
  25 #define QEMU_WATCHDOG_H
  26
  27 extern void wdt_i6300esb_init(void);
  28 extern void wdt_ib700_init(void);
  29
  30 /* Possible values for action parameter. */
  31 #define WDT_RESET        1      /* Hard reset. */
  32 #define WDT_SHUTDOWN     2      /* Shutdown. */
  33 #define WDT_POWEROFF     3      /* Quit. */
  34 #define WDT_PAUSE        4      /* Pause. */
  35 #define WDT_DEBUG        5      /* Prints a message and continues running. */
  36 #define WDT_NONE         6      /* Do nothing. */
  37
  38 struct WatchdogTimerModel {
  39     LIST_ENTRY(WatchdogTimerModel) entry;
  40
  41     /* Short name of the device - used to select it on the command line. */
  42     const char *wdt_name;
  43     /* Longer description (eg. manufacturer and full model number). */
  44     const char *wdt_description;
  45
  46     /* This callback should create/register the device.  It is called
  47      * indirectly from hw/pc.c when the virtual PC is being set up.
  48      */
  49     void (*wdt_pc_init)(PCIBus *pci_bus);
  50 };
  51 typedef struct WatchdogTimerModel WatchdogTimerModel;
  52
  53 /* in vl.c */
  54 extern WatchdogTimerModel *watchdog;
  55 extern int watchdog_action;
  56
  57 /* in hw/watchdog.c */
  58 extern int select_watchdog(const char *p);
  59 extern int select_watchdog_action(const char *action);
  60 extern void watchdog_add_model(WatchdogTimerModel *model);
  61 extern void watchdog_perform_action(void);
  62 extern void watchdog_pc_init(PCIBus *pci_bus);
  63 extern void register_watchdogs(void);
  64
  65 #endif /* QEMU_WATCHDOG_H */