79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
/*
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* Virtio MEM device
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*
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* Copyright (C) 2020 Red Hat, Inc.
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*
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* Authors:
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* David Hildenbrand <david@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef HW_VIRTIO_MEM_H
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#define HW_VIRTIO_MEM_H
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#include "standard-headers/linux/virtio_mem.h"
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#include "hw/virtio/virtio.h"
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#include "qapi/qapi-types-misc.h"
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#include "sysemu/hostmem.h"
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#define TYPE_VIRTIO_MEM "virtio-mem"
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#define VIRTIO_MEM(obj) \
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OBJECT_CHECK(VirtIOMEM, (obj), TYPE_VIRTIO_MEM)
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#define VIRTIO_MEM_CLASS(oc) \
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OBJECT_CLASS_CHECK(VirtIOMEMClass, (oc), TYPE_VIRTIO_MEM)
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#define VIRTIO_MEM_GET_CLASS(obj) \
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OBJECT_GET_CLASS(VirtIOMEMClass, (obj), TYPE_VIRTIO_MEM)
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#define VIRTIO_MEM_MEMDEV_PROP "memdev"
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#define VIRTIO_MEM_NODE_PROP "node"
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#define VIRTIO_MEM_SIZE_PROP "size"
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#define VIRTIO_MEM_REQUESTED_SIZE_PROP "requested-size"
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#define VIRTIO_MEM_BLOCK_SIZE_PROP "block-size"
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#define VIRTIO_MEM_ADDR_PROP "memaddr"
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typedef struct VirtIOMEM {
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VirtIODevice parent_obj;
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/* guest -> host request queue */
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VirtQueue *vq;
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/* bitmap used to track unplugged memory */
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int32_t bitmap_size;
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unsigned long *bitmap;
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/* assigned memory backend and memory region */
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HostMemoryBackend *memdev;
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/* NUMA node */
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uint32_t node;
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/* assigned address of the region in guest physical memory */
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uint64_t addr;
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/* usable region size (<= region_size) */
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uint64_t usable_region_size;
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/* actual size (how much the guest plugged) */
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uint64_t size;
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/* requested size */
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uint64_t requested_size;
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/* block size and alignment */
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uint64_t block_size;
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} VirtIOMEM;
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typedef struct VirtIOMEMClass {
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/* private */
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VirtIODevice parent;
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/* public */
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void (*fill_device_info)(const VirtIOMEM *vmen, VirtioMEMDeviceInfo *vi);
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MemoryRegion *(*get_memory_region)(VirtIOMEM *vmem, Error **errp);
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} VirtIOMEMClass;
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#endif
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