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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, 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     QLIST_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 */
66