df0acded19
setting gap to TRUE will make sparse DIMM address auto allocation, leaving gaps between a new DIMM address and preceeding existing DIMM. 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>
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/*
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* PC DIMM device
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*
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* Copyright ProfitBricks GmbH 2012
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* Copyright (C) 2013-2014 Red Hat Inc
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*
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* Authors:
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* Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>
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* Igor Mammedov <imammedo@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef QEMU_PC_DIMM_H
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#define QEMU_PC_DIMM_H
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#include "exec/memory.h"
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#include "sysemu/hostmem.h"
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#include "hw/qdev.h"
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#define DEFAULT_PC_DIMMSIZE (1024*1024*1024)
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#define TYPE_PC_DIMM "pc-dimm"
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#define PC_DIMM(obj) \
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OBJECT_CHECK(PCDIMMDevice, (obj), TYPE_PC_DIMM)
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#define PC_DIMM_CLASS(oc) \
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OBJECT_CLASS_CHECK(PCDIMMDeviceClass, (oc), TYPE_PC_DIMM)
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#define PC_DIMM_GET_CLASS(obj) \
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OBJECT_GET_CLASS(PCDIMMDeviceClass, (obj), TYPE_PC_DIMM)
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#define PC_DIMM_ADDR_PROP "addr"
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#define PC_DIMM_SLOT_PROP "slot"
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#define PC_DIMM_NODE_PROP "node"
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#define PC_DIMM_SIZE_PROP "size"
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#define PC_DIMM_MEMDEV_PROP "memdev"
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#define PC_DIMM_UNASSIGNED_SLOT -1
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/**
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* PCDIMMDevice:
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* @addr: starting guest physical address, where @PCDIMMDevice is mapped.
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* Default value: 0, means that address is auto-allocated.
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* @node: numa node to which @PCDIMMDevice is attached.
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* @slot: slot number into which @PCDIMMDevice is plugged in.
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* Default value: -1, means that slot is auto-allocated.
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* @hostmem: host memory backend providing memory for @PCDIMMDevice
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*/
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typedef struct PCDIMMDevice {
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/* private */
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DeviceState parent_obj;
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/* public */
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uint64_t addr;
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uint32_t node;
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int32_t slot;
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HostMemoryBackend *hostmem;
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} PCDIMMDevice;
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/**
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* PCDIMMDeviceClass:
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* @get_memory_region: returns #MemoryRegion associated with @dimm
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*/
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typedef struct PCDIMMDeviceClass {
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/* private */
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DeviceClass parent_class;
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/* public */
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MemoryRegion *(*get_memory_region)(PCDIMMDevice *dimm);
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} PCDIMMDeviceClass;
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/**
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* MemoryHotplugState:
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* @base: address in guest RAM address space where hotplug memory
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* address space begins.
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* @mr: hotplug memory address space container
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*/
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typedef struct MemoryHotplugState {
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ram_addr_t base;
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MemoryRegion mr;
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} MemoryHotplugState;
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uint64_t pc_dimm_get_free_addr(uint64_t address_space_start,
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uint64_t address_space_size,
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uint64_t *hint, uint64_t align, bool gap,
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uint64_t size, Error **errp);
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int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **errp);
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int qmp_pc_dimm_device_list(Object *obj, void *opaque);
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uint64_t pc_existing_dimms_capacity(Error **errp);
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void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms,
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MemoryRegion *mr, uint64_t align, bool gap,
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Error **errp);
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void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms,
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MemoryRegion *mr);
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#endif
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