X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Finclude%2Fdevices%2Flnx_virtio_pci.h;h=b3bb6c88ba9561b2a678eebd226809ebf4d4189a;hb=942df9bb1e2570764d24c74f797247536639502e;hp=d60f05d8878bad8e63d0ed711813fc6f74709c90;hpb=57164c930523141c4ef53782de214d2a9f468269;p=palacios.git

diff --git a/palacios/include/devices/lnx_virtio_pci.h b/palacios/include/devices/lnx_virtio_pci.h
index d60f05d..b3bb6c8 100644
--- a/palacios/include/devices/lnx_virtio_pci.h
+++ b/palacios/include/devices/lnx_virtio_pci.h
@@ -48,8 +48,25 @@
 #define VIRTIO_STATUS_PORT 18
 #define VIRTIO_ISR_PORT 19
 
+#define VIRTIO_PAGE_SHIFT 12
 
 
+/* Descriptor flags */
+/* This marks a buffer as continuing via the next field. */
+#define VIRTIO_NEXT_FLAG       0x1
+/* This marks a buffer as write-only (otherwise read-only). */
+#define VIRTIO_WR_ONLY_FLAG      0x2
+
+
+/* Used Flags */
+/* This means don't notify other side when buffer added. */
+#define VRING_NO_NOTIFY_FLAG  0x1
+
+
+/* Avail Flags */
+/* This means don't interrupt guest when buffer consumed. */
+#define VIRTIO_NO_IRQ_FLAG      0x1
+
 /* The virtio configuration space is a hybrid io/memory mapped model 
  * All IO is done via IO port accesses
  * The IO ports access fields in a virtio data structure, and the base io port 
@@ -97,6 +114,23 @@ struct vring_used {
 
 
 
+struct virtio_queue {
+    uint16_t queue_size;
+  
+    uint16_t cur_avail_idx;
+
+    addr_t ring_desc_addr;
+    addr_t ring_avail_addr;
+    addr_t ring_used_addr;
+  
+
+    struct vring_desc * desc; // We can treat this as an array...
+    struct vring_avail * avail;
+    struct vring_used * used;
+
+    uint32_t pfn;
+};
+
 
 
 #endif