watchdog.h revision 7821d6304f2944405f27abf06ae5fc9da38821e4 
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@redhat.com).
20 */
21
22#ifndef QEMU_WATCHDOG_H
23#define QEMU_WATCHDOG_H
24
25extern void wdt_i6300esb_init(void);
26extern 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
36struct 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};
49typedef struct WatchdogTimerModel WatchdogTimerModel;
50
51/* in vl.c */
52extern WatchdogTimerModel *watchdog;
53extern int watchdog_action;
54
55/* in hw/watchdog.c */
56extern int select_watchdog(const char *p);
57extern int select_watchdog_action(const char *action);
58extern void watchdog_add_model(WatchdogTimerModel *model);
59extern void watchdog_perform_action(void);
60extern void watchdog_pc_init(PCIBus *pci_bus);
61extern void register_watchdogs(void);
62
63#endif /* QEMU_WATCHDOG_H */
64