9f318f8f7e
nvdimm needs to check if the backend memory is large enough to contain label data and init its memory region when the device is realized, so introduce realize callback which is called after common dimm has been realize Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
100 lines
3.0 KiB
C
100 lines
3.0 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 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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* @realize: called after common dimm is realized so that the dimm based
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* devices get the chance to do specified operations.
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* @get_memory_region: returns #MemoryRegion associated with @dimm which
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* is directly mapped into the physical address space of guest
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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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void (*realize)(PCDIMMDevice *dimm, Error **errp);
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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 physical 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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hwaddr 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, uint64_t size,
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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, 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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