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Diffstat (limited to 'qemu/include/hw/mem/pc-dimm.h')
-rw-r--r-- | qemu/include/hw/mem/pc-dimm.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/qemu/include/hw/mem/pc-dimm.h b/qemu/include/hw/mem/pc-dimm.h new file mode 100644 index 000000000..d83bf30ea --- /dev/null +++ b/qemu/include/hw/mem/pc-dimm.h @@ -0,0 +1,97 @@ +/* + * PC DIMM device + * + * Copyright ProfitBricks GmbH 2012 + * Copyright (C) 2013-2014 Red Hat Inc + * + * Authors: + * Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> + * Igor Mammedov <imammedo@redhat.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. + * + */ + +#ifndef QEMU_PC_DIMM_H +#define QEMU_PC_DIMM_H + +#include "exec/memory.h" +#include "sysemu/hostmem.h" +#include "hw/qdev.h" + +#define DEFAULT_PC_DIMMSIZE (1024*1024*1024) + +#define TYPE_PC_DIMM "pc-dimm" +#define PC_DIMM(obj) \ + OBJECT_CHECK(PCDIMMDevice, (obj), TYPE_PC_DIMM) +#define PC_DIMM_CLASS(oc) \ + OBJECT_CLASS_CHECK(PCDIMMDeviceClass, (oc), TYPE_PC_DIMM) +#define PC_DIMM_GET_CLASS(obj) \ + OBJECT_GET_CLASS(PCDIMMDeviceClass, (obj), TYPE_PC_DIMM) + +#define PC_DIMM_ADDR_PROP "addr" +#define PC_DIMM_SLOT_PROP "slot" +#define PC_DIMM_NODE_PROP "node" +#define PC_DIMM_SIZE_PROP "size" +#define PC_DIMM_MEMDEV_PROP "memdev" + +#define PC_DIMM_UNASSIGNED_SLOT -1 + +/** + * PCDIMMDevice: + * @addr: starting guest physical address, where @PCDIMMDevice is mapped. + * Default value: 0, means that address is auto-allocated. + * @node: numa node to which @PCDIMMDevice is attached. + * @slot: slot number into which @PCDIMMDevice is plugged in. + * Default value: -1, means that slot is auto-allocated. + * @hostmem: host memory backend providing memory for @PCDIMMDevice + */ +typedef struct PCDIMMDevice { + /* private */ + DeviceState parent_obj; + + /* public */ + uint64_t addr; + uint32_t node; + int32_t slot; + HostMemoryBackend *hostmem; +} PCDIMMDevice; + +/** + * PCDIMMDeviceClass: + * @get_memory_region: returns #MemoryRegion associated with @dimm + */ +typedef struct PCDIMMDeviceClass { + /* private */ + DeviceClass parent_class; + + /* public */ + MemoryRegion *(*get_memory_region)(PCDIMMDevice *dimm); +} PCDIMMDeviceClass; + +/** + * MemoryHotplugState: + * @base: address in guest RAM address space where hotplug memory + * address space begins. + * @mr: hotplug memory address space container + */ +typedef struct MemoryHotplugState { + ram_addr_t base; + MemoryRegion mr; +} MemoryHotplugState; + +uint64_t pc_dimm_get_free_addr(uint64_t address_space_start, + uint64_t address_space_size, + uint64_t *hint, uint64_t align, uint64_t size, + Error **errp); + +int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **errp); + +int qmp_pc_dimm_device_list(Object *obj, void *opaque); +uint64_t pc_existing_dimms_capacity(Error **errp); +void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms, + MemoryRegion *mr, uint64_t align, Error **errp); +void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms, + MemoryRegion *mr); +#endif |