1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com/* 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Virtual hardware watchdog. 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright (C) 2009 Red Hat Inc. 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * This program is free software; you can redistribute it and/or 7ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * modify it under the terms of the GNU General Public License 8f168b86d7fafc5c20c87bebc6fd393cb17e120catfarina * as published by the Free Software Foundation; either version 2 93a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com * of the License, or (at your option) any later version. 10d6638e644e430a721ea2dc2372e1880e16a3ff5dreed@android.com * 113a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com * This program is distributed in the hope that it will be useful, 123a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com * but WITHOUT ANY WARRANTY; without even the implied warranty of 133a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 143a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com * GNU General Public License for more details. 153a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com * 16095186a466f92b871c8ef8385246405426a67adbreed@google.com * You should have received a copy of the GNU General Public License 17095186a466f92b871c8ef8385246405426a67adbreed@google.com * along with this program; if not, see <http://www.gnu.org/licenses/>. 18095186a466f92b871c8ef8385246405426a67adbreed@google.com * 19095186a466f92b871c8ef8385246405426a67adbreed@google.com * By Richard W.M. Jones (rjones@redhat.com). 20095186a466f92b871c8ef8385246405426a67adbreed@google.com */ 21095186a466f92b871c8ef8385246405426a67adbreed@google.com 22095186a466f92b871c8ef8385246405426a67adbreed@google.com#include "qemu-common.h" 23095186a466f92b871c8ef8385246405426a67adbreed@google.com#include "qemu/queue.h" 24095186a466f92b871c8ef8385246405426a67adbreed@google.com#include "sysemu/sysemu.h" 25095186a466f92b871c8ef8385246405426a67adbreed@google.com#include "sysemu/watchdog.h" 26095186a466f92b871c8ef8385246405426a67adbreed@google.com 27095186a466f92b871c8ef8385246405426a67adbreed@google.comstatic QLIST_HEAD(watchdog_list, WatchdogTimerModel) watchdog_list; 28095186a466f92b871c8ef8385246405426a67adbreed@google.com 29095186a466f92b871c8ef8385246405426a67adbreed@google.comvoid watchdog_add_model(WatchdogTimerModel *model) 30095186a466f92b871c8ef8385246405426a67adbreed@google.com{ 31095186a466f92b871c8ef8385246405426a67adbreed@google.com QLIST_INSERT_HEAD(&watchdog_list, model, entry); 323a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com} 333a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com 343a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com/* Returns: 353a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com * 0 = continue 363a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com * 1 = exit program with error 373a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com * 2 = exit program without error 383a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com */ 393a859a00342ed078af683fd1901fd26c93dd40f0reed@android.comint select_watchdog(const char *p) 403a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com{ 41f168b86d7fafc5c20c87bebc6fd393cb17e120catfarina WatchdogTimerModel *model; 423a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com 433a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com if (watchdog) { 443a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com fprintf(stderr, 45095186a466f92b871c8ef8385246405426a67adbreed@google.com "qemu: only one watchdog option may be given\n"); 46055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com return 1; 47055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com } 483a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com 49410e6e80f00a6c660675c80904807a041c7b7d2amtklein@google.com /* -watchdog ? lists available devices and exits cleanly. */ 50410e6e80f00a6c660675c80904807a041c7b7d2amtklein@google.com if (strcmp(p, "?") == 0) { 517fbc6048b1cacbf11852e25b838edc8fe9433dcdbsalomon@google.com QLIST_FOREACH(model, &watchdog_list, entry) { 52095186a466f92b871c8ef8385246405426a67adbreed@google.com fprintf(stderr, "\t%s\t%s\n", 53055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com model->wdt_name, model->wdt_description); 543a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com } 553a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com return 2; 56095186a466f92b871c8ef8385246405426a67adbreed@google.com } 57095186a466f92b871c8ef8385246405426a67adbreed@google.com 583a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com QLIST_FOREACH(model, &watchdog_list, entry) { 59b9d84f3bed7255004b7df18fb2c2fcc0ffac78bcreed@google.com if (strcasecmp(model->wdt_name, p) == 0) { 60055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com watchdog = model; 61055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com return 0; 62055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com } 63055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com } 64055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com 65055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com fprintf(stderr, "Unknown -watchdog device. Supported devices are:\n"); 66055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com QLIST_FOREACH(model, &watchdog_list, entry) { 67055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com fprintf(stderr, "\t%s\t%s\n", 68055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com model->wdt_name, model->wdt_description); 69055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com } 70055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com return 1; 71055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com} 72055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com 73055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.comint select_watchdog_action(const char *p) 74055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com{ 75055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com if (strcasecmp(p, "reset") == 0) 76055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com watchdog_action = WDT_RESET; 773a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com else if (strcasecmp(p, "shutdown") == 0) 783a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com watchdog_action = WDT_SHUTDOWN; 793a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com else if (strcasecmp(p, "poweroff") == 0) 803a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com watchdog_action = WDT_POWEROFF; 813a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com else if (strcasecmp(p, "pause") == 0) 82055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com watchdog_action = WDT_PAUSE; 83b9682d38c1daa597c4acffd93cbd5ba72735a613vandebo@chromium.org else if (strcasecmp(p, "debug") == 0) 84055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com watchdog_action = WDT_DEBUG; 85095186a466f92b871c8ef8385246405426a67adbreed@google.com else if (strcasecmp(p, "none") == 0) 86b9d84f3bed7255004b7df18fb2c2fcc0ffac78bcreed@google.com watchdog_action = WDT_NONE; 87b9d84f3bed7255004b7df18fb2c2fcc0ffac78bcreed@google.com else 88095186a466f92b871c8ef8385246405426a67adbreed@google.com return -1; 89b9682d38c1daa597c4acffd93cbd5ba72735a613vandebo@chromium.org 90b9d84f3bed7255004b7df18fb2c2fcc0ffac78bcreed@google.com return 0; 913a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com} 923a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com 933a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com/* This actually performs the "action" once a watchdog has expired, 943361471a3504ecd0351ff70f4c42d8d6fee963d4commit-bot@chromium.org * ie. reboot, shutdown, exit, etc. 953a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com */ 96e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.orgvoid watchdog_perform_action(void) 973a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com{ 983a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com switch(watchdog_action) { 993a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com case WDT_RESET: /* same as 'system_reset' in monitor */ 100095186a466f92b871c8ef8385246405426a67adbreed@google.com qemu_system_reset_request(); 101095186a466f92b871c8ef8385246405426a67adbreed@google.com break; 102095186a466f92b871c8ef8385246405426a67adbreed@google.com 103095186a466f92b871c8ef8385246405426a67adbreed@google.com case WDT_SHUTDOWN: /* same as 'system_powerdown' in monitor */ 1043a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com qemu_system_powerdown_request(); 1053a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com break; 1063a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com 107b9d84f3bed7255004b7df18fb2c2fcc0ffac78bcreed@google.com case WDT_POWEROFF: /* same as 'quit' command in monitor */ 108055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com exit(0); 109055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com break; 110055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com 111055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com case WDT_PAUSE: /* same as 'stop' command in monitor */ 112055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com vm_stop(0); 113055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com break; 1143361471a3504ecd0351ff70f4c42d8d6fee963d4commit-bot@chromium.org 115055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com case WDT_DEBUG: 116055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com fprintf(stderr, "watchdog: timer fired\n"); 117055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com break; 118055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com 119055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com case WDT_NONE: 120055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com break; 121055af884c8f1a0a2e5b4ded400ea7af27295dfc1reed@google.com } 1223a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com} 1233a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com 1243a859a00342ed078af683fd1901fd26c93dd40f0reed@android.comvoid watchdog_pc_init(PCIBus *pci_bus) 1253a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com{ 126f168b86d7fafc5c20c87bebc6fd393cb17e120catfarina if (watchdog) 1273a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com watchdog->wdt_pc_init(pci_bus); 1283a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com} 1293a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com 1303a859a00342ed078af683fd1901fd26c93dd40f0reed@android.comvoid register_watchdogs(void) 1313a859a00342ed078af683fd1901fd26c93dd40f0reed@android.com{ 132eca48360678f1f62089d48ed1b5b885f0a134005reed@android.com#if 0 133410e6e80f00a6c660675c80904807a041c7b7d2amtklein@google.com wdt_ib700_init(); 134410e6e80f00a6c660675c80904807a041c7b7d2amtklein@google.com wdt_i6300esb_init(); 135410e6e80f00a6c660675c80904807a041c7b7d2amtklein@google.com#endif 136b9d84f3bed7255004b7df18fb2c2fcc0ffac78bcreed@google.com} 137410e6e80f00a6c660675c80904807a041c7b7d2amtklein@google.com