include/hw/virtio/vhost-vdpa.h

   1 /*
   2  * vhost-vdpa.h
   3  *
   4  * Copyright(c) 2017-2018 Intel Corporation.
   5  * Copyright(c) 2020 Red Hat, Inc.
   6  *
   7  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   8  * See the COPYING file in the top-level directory.
   9  *
  10  */
  11
  12 #ifndef HW_VIRTIO_VHOST_VDPA_H
  13 #define HW_VIRTIO_VHOST_VDPA_H
  14
  15 #include <gmodule.h>
  16
  17 #include "hw/virtio/vhost-iova-tree.h"
  18 #include "hw/virtio/vhost-shadow-virtqueue.h"
  19 #include "hw/virtio/virtio.h"
  20 #include "standard-headers/linux/vhost_types.h"
  21
  22 typedef struct VhostVDPAHostNotifier {
  23     MemoryRegion mr;
  24     void *addr;
  25 } VhostVDPAHostNotifier;
  26
  27 typedef struct vhost_vdpa {
  28     int device_fd;
  29     int index;
  30     uint32_t msg_type;
  31     bool iotlb_batch_begin_sent;
  32     MemoryListener listener;
  33     struct vhost_vdpa_iova_range iova_range;
  34     uint64_t acked_features;
  35     bool shadow_vqs_enabled;
  36     /* IOVA mapping used by the Shadow Virtqueue */
  37     VhostIOVATree *iova_tree;
  38     Error *migration_blocker;
  39     GPtrArray *shadow_vqs;
  40     const VhostShadowVirtqueueOps *shadow_vq_ops;
  41     void *shadow_vq_ops_opaque;
  42     struct vhost_dev *dev;
  43     VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX];
  44 } VhostVDPA;
  45
  46 int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size,
  47                        void *vaddr, bool readonly);
  48 int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, hwaddr size);
  49
  50 #endif