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acpi: memory hotplug ACPI hardware implementation

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- implements QEMU hardware part of memory hotplug protocol
  described at "docs/specs/acpi_mem_hotplug.txt"
- handles only memory add notification event for now

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2014-06-02 15:25:16 +02:00 • committed by Michael S. Tsirkin
parent 7e629d1d8d
commit 3ef77acab2
5 changed files with 224 additions and 0 deletions
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29
include/hw/acpi/memory_hotplug.h Normal file
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@ -0,0 +1,29 @@
#ifndef QEMU_HW_ACPI_MEMORY_HOTPLUG_H
#define QEMU_HW_ACPI_MEMORY_HOTPLUG_H
#include "hw/qdev-core.h"
#include "hw/acpi/acpi.h"
#define ACPI_MEMORY_HOTPLUG_STATUS 8
typedef struct MemStatus {
DeviceState *dimm;
bool is_enabled;
bool is_inserting;
uint32_t ost_event;
uint32_t ost_status;
} MemStatus;
typedef struct MemHotplugState {
MemoryRegion io;
uint32_t selector;
uint32_t dev_count;
MemStatus *devs;
} MemHotplugState;
void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner,
MemHotplugState *state);
void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState *mem_st,
DeviceState *dev, Error **errp);
#endif

3
include/hw/acpi/pc-hotplug.h
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@ -29,4 +29,7 @@
#define ICH9_CPU_HOTPLUG_IO_BASE 0x0CD8
#define PIIX4_CPU_HOTPLUG_IO_BASE 0xaf00
#define ACPI_MEMORY_HOTPLUG_IO_LEN 24
#define ACPI_MEMORY_HOTPLUG_BASE 0x0a00
#endif