include/hw/virtio/virtio-pmem.h

   1 /*
   2  * Virtio PMEM device
   3  *
   4  * Copyright (C) 2018-2019 Red Hat, Inc.
   5  *
   6  * Authors:
   7  *  Pankaj Gupta <pagupta@redhat.com>
   8  *  David Hildenbrand <david@redhat.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2.
  11  * See the COPYING file in the top-level directory.
  12  */
  13
  14 #ifndef HW_VIRTIO_PMEM_H
  15 #define HW_VIRTIO_PMEM_H
  16
  17 #include "hw/virtio/virtio.h"
  18 #include "sysemu/hostmem.h"
  19
  20 #define TYPE_VIRTIO_PMEM "virtio-pmem"
  21
  22 #define VIRTIO_PMEM(obj) \
  23         OBJECT_CHECK(VirtIOPMEM, (obj), TYPE_VIRTIO_PMEM)
  24 #define VIRTIO_PMEM_CLASS(oc) \
  25         OBJECT_CLASS_CHECK(VirtIOPMEMClass, (oc), TYPE_VIRTIO_PMEM)
  26 #define VIRTIO_PMEM_GET_CLASS(obj) \
  27         OBJECT_GET_CLASS(VirtIOPMEMClass, (obj), TYPE_VIRTIO_PMEM)
  28
  29 #define VIRTIO_PMEM_ADDR_PROP "memaddr"
  30 #define VIRTIO_PMEM_MEMDEV_PROP "memdev"
  31
  32 typedef struct VirtIOPMEM {
  33     VirtIODevice parent_obj;
  34
  35     VirtQueue *rq_vq;
  36     uint64_t start;
  37     HostMemoryBackend *memdev;
  38 } VirtIOPMEM;
  39
  40 typedef struct VirtIOPMEMClass {
  41     /* private */
  42     VirtIODevice parent;
  43
  44     /* public */
  45     void (*fill_device_info)(const VirtIOPMEM *pmem, VirtioPMEMDeviceInfo *vi);
  46     MemoryRegion *(*get_memory_region)(VirtIOPMEM *pmem, Error **errp);
  47 } VirtIOPMEMClass;
  48
  49 #endif