2 files changed, 24 insertions, 0 deletions
diff --git a/include/hw/virtio/virtio-pci.h b/include/hw/virtio/virtio-pci.h
index 59d88018c1..4d57a9c751 100644
--- a/include/hw/virtio/virtio-pci.h
+++ b/include/hw/virtio/virtio-pci.h
@@ -43,6 +43,7 @@ enum {
     VIRTIO_PCI_FLAG_INIT_FLR_BIT,
     VIRTIO_PCI_FLAG_AER_BIT,
     VIRTIO_PCI_FLAG_ATS_PAGE_ALIGNED_BIT,
+    VIRTIO_PCI_FLAG_VDPA_BIT,
 };
 
 /* Need to activate work-arounds for buggy guests at vmstate load. */
@@ -89,6 +90,9 @@ enum {
 #define VIRTIO_PCI_FLAG_ATS_PAGE_ALIGNED \
   (1 << VIRTIO_PCI_FLAG_ATS_PAGE_ALIGNED_BIT)
 
+/* VDPA supported flags */
+#define VIRTIO_PCI_FLAG_VDPA (1 << VIRTIO_PCI_FLAG_VDPA_BIT)
+
 typedef struct {
     MSIMessage msg;
     int virq;
@@ -140,6 +144,7 @@ struct VirtIOPCIProxy {
         };
         VirtIOPCIRegion regs[5];
     };
+    VirtIOPCIRegion lm;
     MemoryRegion modern_bar;
     MemoryRegion io_bar;
     uint32_t legacy_io_bar_idx;
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index c8f72850bc..b3c74a1bca 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -35,6 +35,9 @@
                                 (0x1ULL << VIRTIO_F_NOTIFY_ON_EMPTY) | \
                                 (0x1ULL << VIRTIO_F_ANY_LAYOUT))
 
+#define LM_DISABLE      0x00
+#define LM_ENABLE       0x01
+
 struct VirtQueue;
 
 static inline hwaddr vring_align(hwaddr addr,
@@ -95,6 +98,11 @@ enum virtio_device_endian {
     VIRTIO_DEVICE_ENDIAN_BIG,
 };
 
+typedef struct BitmapMemoryRegionCaches {
+    struct rcu_head rcu;
+    MemoryRegionCache bitmap;
+} BitmapMemoryRegionCaches;
+
 /**
  * struct VirtIODevice - common VirtIO structure
  * @name: name of the device
@@ -128,6 +136,14 @@ struct VirtIODevice
     uint32_t generation;
     int nvectors;
     VirtQueue *vq;
+    uint8_t lm_logging_ctrl;
+    uint32_t lm_base_addr_low;
+    uint32_t lm_base_addr_high;
+    uint32_t lm_end_addr_low;
+    uint32_t lm_end_addr_high;
+
+    BitmapMemoryRegionCaches *caches;
+
     MemoryListener listener;
     uint16_t device_id;
     /* @vm_running: current VM running state via virtio_vmstate_change() */
@@ -379,8 +395,11 @@ hwaddr virtio_queue_get_desc_size(VirtIODevice *vdev, int n);
 hwaddr virtio_queue_get_avail_size(VirtIODevice *vdev, int n);
 hwaddr virtio_queue_get_used_size(VirtIODevice *vdev, int n);
 unsigned int virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n);
+unsigned int virtio_queue_get_vring_states(VirtIODevice *vdev, int n);
 void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n,
                                      unsigned int idx);
+void virtio_queue_set_vring_states(VirtIODevice *vdev, int n,
+                                   unsigned int idx);
 void virtio_queue_restore_last_avail_idx(VirtIODevice *vdev, int n);
 void virtio_queue_invalidate_signalled_used(VirtIODevice *vdev, int n);
 void virtio_queue_update_used_idx(VirtIODevice *vdev, int n);