include/hw/acpi/memory_hotplug.h

   1 #ifndef QEMU_HW_ACPI_MEMORY_HOTPLUG_H
   2 #define QEMU_HW_ACPI_MEMORY_HOTPLUG_H
   3
   4 #include "hw/qdev-core.h"
   5 #include "hw/acpi/acpi.h"
   6 #include "migration/vmstate.h"
   7 #include "hw/acpi/aml-build.h"
   8
   9 /**
  10  * MemStatus:
  11  * @is_removing: the memory device in slot has been requested to be ejected.
  12  *
  13  * This structure stores memory device's status.
  14  */
  15 typedef struct MemStatus {
  16     DeviceState *dimm;
  17     bool is_enabled;
  18     bool is_inserting;
  19     bool is_removing;
  20     uint32_t ost_event;
  21     uint32_t ost_status;
  22 } MemStatus;
  23
  24 typedef struct MemHotplugState {
  25     bool is_enabled; /* true if memory hotplug is supported */
  26     MemoryRegion io;
  27     uint32_t selector;
  28     uint32_t dev_count;
  29     MemStatus *devs;
  30 } MemHotplugState;
  31
  32 void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner,
  33                               MemHotplugState *state);
  34
  35 void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, MemHotplugState *mem_st,
  36                          DeviceState *dev, Error **errp);
  37 void acpi_memory_unplug_request_cb(HotplugHandler *hotplug_dev,
  38                                    MemHotplugState *mem_st,
  39                                    DeviceState *dev, Error **errp);
  40 void acpi_memory_unplug_cb(MemHotplugState *mem_st,
  41                            DeviceState *dev, Error **errp);
  42
  43 extern const VMStateDescription vmstate_memory_hotplug;
  44 #define VMSTATE_MEMORY_HOTPLUG(memhp, state) \
  45     VMSTATE_STRUCT(memhp, state, 1, \
  46                    vmstate_memory_hotplug, MemHotplugState)
  47
  48 void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list);
  49
  50 #define MEMORY_HOTPLUG_DEVICE        "MHPD"
  51 #define MEMORY_SLOT_SCAN_METHOD      "MSCN"
  52 #define MEMORY_HOTPLUG_HANDLER_PATH "\\_SB.PCI0." \
  53      MEMORY_HOTPLUG_DEVICE "." MEMORY_SLOT_SCAN_METHOD
  54
  55 void build_memory_hotplug_aml(Aml *ctx, uint32_t nr_mem,
  56                               uint16_t io_base, uint16_t io_len);
  57 #endif