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qmp: add ACPI_DEVICE_OST event handling

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emits event when ACPI OSPM evaluates _OST method
of ACPI device.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2014-06-16 19:12:29 +02:00 committed by Michael S. Tsirkin
parent 02419bcb3f
commit 02edd407f3
4 changed files with 40 additions and 1 deletions
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10
docs/qmp/qmp-events.txt
View File

@ -1,6 +1,16 @@
QEMU Machine Protocol Events
============================
ACPI_DEVICE_OST
---------------
Emitted when guest executes ACPI _OST method.
- data: ACPIOSTInfo type as described in qapi-schema.json
{ "event": "ACPI_DEVICE_OST",
"data": { "device": "d1", "slot": "0", "slot-type": "DIMM", "source": 1, "status": 0 } }
BALLOON_CHANGE
--------------

29
hw/acpi/memory_hotplug.c
View File

@ -3,6 +3,10 @@
#include "hw/mem/pc-dimm.h"
#include "hw/boards.h"
#include "trace.h"
#include "qapi-visit.h"
#include "monitor/monitor.h"
#include "qapi/dealloc-visitor.h"
#include "qapi/qmp-output-visitor.h"
static ACPIOSTInfo *acpi_memory_device_status(int slot, MemStatus *mdev)
{
@ -35,6 +39,29 @@ void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list)
}
}
static void acpi_memory_ost_mon_event(const MemHotplugState *mem_st)
{
Visitor *v;
QObject *out_info;
QapiDeallocVisitor *md;
QmpOutputVisitor *mo = qmp_output_visitor_new();
MemStatus *mdev = &mem_st->devs[mem_st->selector];
ACPIOSTInfo *info = acpi_memory_device_status(mem_st->selector, mdev);
v = qmp_output_get_visitor(mo);
visit_type_ACPIOSTInfo(v, &info, "unused", NULL);
out_info = qmp_output_get_qobject(mo);
monitor_protocol_event(QEVENT_ACPI_OST, out_info);
qobject_decref(out_info);
qmp_output_visitor_cleanup(mo);
md = qapi_dealloc_visitor_new();
v = qapi_dealloc_get_visitor(md);
visit_type_ACPIOSTInfo(v, &info, "unused", NULL);
qapi_dealloc_visitor_cleanup(md);
}
static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr,
unsigned int size)
{
@ -119,8 +146,8 @@ static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data,
mdev = &mem_st->devs[mem_st->selector];
mdev->ost_status = data;
trace_mhp_acpi_write_ost_status(mem_st->selector, mdev->ost_status);
/* TODO: report async error */
/* TODO: implement memory removal on guest signal */
acpi_memory_ost_mon_event(mem_st);
break;
case 0x14:
mdev = &mem_st->devs[mem_st->selector];

1
include/monitor/monitor.h
View File

@ -51,6 +51,7 @@ typedef enum MonitorEvent {
QEVENT_BLOCK_IMAGE_CORRUPTED,
QEVENT_QUORUM_FAILURE,
QEVENT_QUORUM_REPORT_BAD,
QEVENT_ACPI_OST,
/* Add to 'monitor_event_names' array in monitor.c when
* defining new events here */

1
monitor.c
View File

@ -487,6 +487,7 @@ static const char *monitor_event_names[] = {
[QEVENT_BLOCK_IMAGE_CORRUPTED] = "BLOCK_IMAGE_CORRUPTED",
[QEVENT_QUORUM_FAILURE] = "QUORUM_FAILURE",
[QEVENT_QUORUM_REPORT_BAD] = "QUORUM_REPORT_BAD",
[QEVENT_ACPI_OST] = "ACPI_DEVICE_OST",
};
QEMU_BUILD_BUG_ON(ARRAY_SIZE(monitor_event_names) != QEVENT_MAX)