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      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, see <http://www.gnu.org/licenses/>.
     18  *
     19  * By Richard W.M. Jones (rjones (at) redhat.com).
     20  */
     21 
     22 #ifndef QEMU_WATCHDOG_H
     23 #define QEMU_WATCHDOG_H
     24 
     25 extern void wdt_i6300esb_init(void);
     26 extern void wdt_ib700_init(void);
     27 
     28 /* Possible values for action parameter. */
     29 #define WDT_RESET        1	/* Hard reset. */
     30 #define WDT_SHUTDOWN     2	/* Shutdown. */
     31 #define WDT_POWEROFF     3	/* Quit. */
     32 #define WDT_PAUSE        4	/* Pause. */
     33 #define WDT_DEBUG        5	/* Prints a message and continues running. */
     34 #define WDT_NONE         6	/* Do nothing. */
     35 
     36 struct WatchdogTimerModel {
     37     QLIST_ENTRY(WatchdogTimerModel) entry;
     38 
     39     /* Short name of the device - used to select it on the command line. */
     40     const char *wdt_name;
     41     /* Longer description (eg. manufacturer and full model number). */
     42     const char *wdt_description;
     43 
     44     /* This callback should create/register the device.  It is called
     45      * indirectly from hw/pc.c when the virtual PC is being set up.
     46      */
     47     void (*wdt_pc_init)(PCIBus *pci_bus);
     48 };
     49 typedef struct WatchdogTimerModel WatchdogTimerModel;
     50 
     51 /* in vl.c */
     52 extern WatchdogTimerModel *watchdog;
     53 extern int watchdog_action;
     54 
     55 /* in hw/watchdog.c */
     56 extern int select_watchdog(const char *p);
     57 extern int select_watchdog_action(const char *action);
     58 extern void watchdog_add_model(WatchdogTimerModel *model);
     59 extern void watchdog_perform_action(void);
     60 extern void watchdog_pc_init(PCIBus *pci_bus);
     61 extern void register_watchdogs(void);
     62 
     63 #endif /* QEMU_WATCHDOG_H */
     64