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/*
* QEMU simulated pvpanic device.
*
* Copyright Fujitsu, Corp. 2013
*
* Authors:
* Wen Congyang <wency@cn.fujitsu.com>
* Hu Tao <hutao@cn.fujitsu.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "qemu/module.h"
#include "system/runstate.h"
#include "hw/nvram/fw_cfg.h"
#include "hw/qdev-properties.h"
#include "hw/misc/pvpanic.h"
#include "qom/object.h"
#include "standard-headers/misc/pvpanic.h"
static void handle_event(int event)
{
static bool logged;
if (event & ~PVPANIC_EVENTS && !logged) {
qemu_log_mask(LOG_GUEST_ERROR, "pvpanic: unknown event %#x.\n", event);
logged = true;
}
if (event & PVPANIC_PANICKED) {
qemu_system_guest_panicked(NULL);
return;
}
if (event & PVPANIC_CRASH_LOADED) {
qemu_system_guest_crashloaded(NULL);
return;
}
if (event & PVPANIC_SHUTDOWN) {
qemu_system_guest_pvshutdown();
return;
}
}
/* return supported events on read */
static uint64_t pvpanic_read(void *opaque, hwaddr addr, unsigned size)
{
PVPanicState *pvp = opaque;
return pvp->events;
}
static void pvpanic_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
handle_event(val);
}
static const MemoryRegionOps pvpanic_ops = {
.read = pvpanic_read,
.write = pvpanic_write,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
void pvpanic_setup_io(PVPanicState *s, DeviceState *dev, unsigned size)
{
memory_region_init_io(&s->mr, OBJECT(dev), &pvpanic_ops, s, "pvpanic", size);
}
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