1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*
* 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"
/* 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);
memory_region_init_io(&s->io, &pvpanic_ops, s, "pvpanic", 1);
isa_register_ioport(dev, &s->io, s->ioport);
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)
|
