mirror of
https://git.proxmox.com/git/qemu
synced 2025-10-28 01:00:18 +00:00
3ab135f346
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: f840042f0e1205041f8feaf0d39ca639884f3a00.1366945969.git.hutao@cn.fujitsu.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
145 lines
3.4 KiB
C
145 lines
3.4 KiB
C
/*
|
|
* 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 "qapi/qmp/qobject.h"
|
|
#include "qapi/qmp/qjson.h"
|
|
#include "monitor/monitor.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "qemu/log.h"
|
|
|
|
#include "hw/nvram/fw_cfg.h"
|
|
#include "hw/i386/pc.h"
|
|
|
|
/* The bit of supported pv event */
|
|
#define PVPANIC_F_PANICKED 0
|
|
|
|
/* The pv event value */
|
|
#define PVPANIC_PANICKED (1 << PVPANIC_F_PANICKED)
|
|
|
|
#define TYPE_ISA_PVPANIC_DEVICE "pvpanic"
|
|
#define ISA_PVPANIC_DEVICE(obj) \
|
|
OBJECT_CHECK(PVPanicState, (obj), TYPE_ISA_PVPANIC_DEVICE)
|
|
|
|
static void panicked_mon_event(const char *action)
|
|
{
|
|
QObject *data;
|
|
|
|
data = qobject_from_jsonf("{ 'action': %s }", action);
|
|
monitor_protocol_event(QEVENT_GUEST_PANICKED, data);
|
|
qobject_decref(data);
|
|
}
|
|
|
|
static void handle_event(int event)
|
|
{
|
|
static bool logged;
|
|
|
|
if (event & ~PVPANIC_PANICKED && !logged) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "pvpanic: unknown event %#x.\n", event);
|
|
logged = true;
|
|
}
|
|
|
|
if (event & PVPANIC_PANICKED) {
|
|
panicked_mon_event("pause");
|
|
vm_stop(RUN_STATE_GUEST_PANICKED);
|
|
return;
|
|
}
|
|
}
|
|
|
|
#include "hw/isa/isa.h"
|
|
|
|
typedef struct PVPanicState {
|
|
ISADevice parent_obj;
|
|
|
|
MemoryRegion io;
|
|
uint16_t ioport;
|
|
} PVPanicState;
|
|
|
|
/* return supported events on read */
|
|
static uint64_t pvpanic_ioport_read(void *opaque, hwaddr addr, unsigned size)
|
|
{
|
|
return PVPANIC_PANICKED;
|
|
}
|
|
|
|
static void pvpanic_ioport_write(void *opaque, hwaddr addr, uint64_t val,
|
|
unsigned size)
|
|
{
|
|
handle_event(val);
|
|
}
|
|
|
|
static const MemoryRegionOps pvpanic_ops = {
|
|
.read = pvpanic_ioport_read,
|
|
.write = pvpanic_ioport_write,
|
|
.impl = {
|
|
.min_access_size = 1,
|
|
.max_access_size = 1,
|
|
},
|
|
};
|
|
|
|
static int pvpanic_isa_initfn(ISADevice *dev)
|
|
{
|
|
PVPanicState *s = ISA_PVPANIC_DEVICE(dev);
|
|
static bool port_configured;
|
|
void *fw_cfg;
|
|
|
|
memory_region_init_io(&s->io, &pvpanic_ops, s, "pvpanic", 1);
|
|
isa_register_ioport(dev, &s->io, s->ioport);
|
|
|
|
if (!port_configured) {
|
|
fw_cfg = object_resolve_path("/machine/fw_cfg", NULL);
|
|
if (fw_cfg) {
|
|
fw_cfg_add_file(fw_cfg, "etc/pvpanic-port",
|
|
g_memdup(&s->ioport, sizeof(s->ioport)),
|
|
sizeof(s->ioport));
|
|
port_configured = true;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int pvpanic_init(ISABus *bus)
|
|
{
|
|
isa_create_simple(bus, TYPE_ISA_PVPANIC_DEVICE);
|
|
return 0;
|
|
}
|
|
|
|
static Property pvpanic_isa_properties[] = {
|
|
DEFINE_PROP_UINT16("ioport", PVPanicState, ioport, 0x505),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void pvpanic_isa_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
|
|
|
|
ic->init = pvpanic_isa_initfn;
|
|
dc->no_user = 1;
|
|
dc->props = pvpanic_isa_properties;
|
|
}
|
|
|
|
static TypeInfo pvpanic_isa_info = {
|
|
.name = TYPE_ISA_PVPANIC_DEVICE,
|
|
.parent = TYPE_ISA_DEVICE,
|
|
.instance_size = sizeof(PVPanicState),
|
|
.class_init = pvpanic_isa_class_init,
|
|
};
|
|
|
|
static void pvpanic_register_types(void)
|
|
{
|
|
type_register_static(&pvpanic_isa_info);
|
|
}
|
|
|
|
type_init(pvpanic_register_types)
|