diff options
Diffstat (limited to 'qemu/hw/watchdog/wdt_ib700.c')
| -rw-r--r-- | qemu/hw/watchdog/wdt_ib700.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/qemu/hw/watchdog/wdt_ib700.c b/qemu/hw/watchdog/wdt_ib700.c deleted file mode 100644 index 532afe89e..000000000 --- a/qemu/hw/watchdog/wdt_ib700.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Virtual hardware watchdog. - * - * Copyright (C) 2009 Red Hat Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - * - * By Richard W.M. Jones (rjones@redhat.com). - */ - -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "qemu/timer.h" -#include "sysemu/watchdog.h" -#include "hw/hw.h" -#include "hw/isa/isa.h" -#include "hw/i386/pc.h" - -/*#define IB700_DEBUG 1*/ - -#ifdef IB700_DEBUG -#define ib700_debug(fs,...) \ - fprintf(stderr,"ib700: %s: "fs,__func__,##__VA_ARGS__) -#else -#define ib700_debug(fs,...) -#endif - -#define TYPE_IB700 "ib700" -#define IB700(obj) OBJECT_CHECK(IB700State, (obj), TYPE_IB700) - -typedef struct IB700state { - ISADevice parent_obj; - - QEMUTimer *timer; - - PortioList port_list; -} IB700State; - -/* This is the timer. We use a global here because the watchdog - * code ensures there is only one watchdog (it is located at a fixed, - * unchangeable IO port, so there could only ever be one anyway). - */ - -/* A write to this register enables the timer. */ -static void ib700_write_enable_reg(void *vp, uint32_t addr, uint32_t data) -{ - IB700State *s = vp; - static int time_map[] = { - 30, 28, 26, 24, 22, 20, 18, 16, - 14, 12, 10, 8, 6, 4, 2, 0 - }; - int64_t timeout; - - ib700_debug("addr = %x, data = %x\n", addr, data); - - timeout = (int64_t) time_map[data & 0xF] * NANOSECONDS_PER_SECOND; - timer_mod(s->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + timeout); -} - -/* A write (of any value) to this register disables the timer. */ -static void ib700_write_disable_reg(void *vp, uint32_t addr, uint32_t data) -{ - IB700State *s = vp; - - ib700_debug("addr = %x, data = %x\n", addr, data); - - timer_del(s->timer); -} - -/* This is called when the watchdog expires. */ -static void ib700_timer_expired(void *vp) -{ - IB700State *s = vp; - - ib700_debug("watchdog expired\n"); - - watchdog_perform_action(); - timer_del(s->timer); -} - -static const VMStateDescription vmstate_ib700 = { - .name = "ib700_wdt", - .version_id = 0, - .minimum_version_id = 0, - .fields = (VMStateField[]) { - VMSTATE_TIMER_PTR(timer, IB700State), - VMSTATE_END_OF_LIST() - } -}; - -static const MemoryRegionPortio wdt_portio_list[] = { - { 0x441, 2, 1, .write = ib700_write_disable_reg, }, - { 0x443, 2, 1, .write = ib700_write_enable_reg, }, - PORTIO_END_OF_LIST(), -}; - -static void wdt_ib700_realize(DeviceState *dev, Error **errp) -{ - IB700State *s = IB700(dev); - - ib700_debug("watchdog init\n"); - - s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, ib700_timer_expired, s); - - portio_list_init(&s->port_list, OBJECT(s), wdt_portio_list, s, "ib700"); - portio_list_add(&s->port_list, isa_address_space_io(&s->parent_obj), 0); -} - -static void wdt_ib700_reset(DeviceState *dev) -{ - IB700State *s = IB700(dev); - - ib700_debug("watchdog reset\n"); - - timer_del(s->timer); -} - -static WatchdogTimerModel model = { - .wdt_name = "ib700", - .wdt_description = "iBASE 700", -}; - -static void wdt_ib700_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->realize = wdt_ib700_realize; - dc->reset = wdt_ib700_reset; - dc->vmsd = &vmstate_ib700; - set_bit(DEVICE_CATEGORY_MISC, dc->categories); -} - -static const TypeInfo wdt_ib700_info = { - .name = TYPE_IB700, - .parent = TYPE_ISA_DEVICE, - .instance_size = sizeof(IB700State), - .class_init = wdt_ib700_class_init, -}; - -static void wdt_ib700_register_types(void) -{ - watchdog_add_model(&model); - type_register_static(&wdt_ib700_info); -} - -type_init(wdt_ib700_register_types) |