updates to virtio device framework

[palacios.git] / palacios / include / devices / lnx_virtio_pci.h

diff --git a/palacios/include/devices/lnx_virtio.h b/palacios/include/devices/lnx_virtio_pci.h
similarity index 70%
rename from palacios/include/devices/lnx_virtio.h
rename to palacios/include/devices/lnx_virtio_pci.h
index 9afa483..d60f05d 100644 (file)
--- a/palacios/include/devices/lnx_virtio.h
+++ b/palacios/include/devices/lnx_virtio_pci.h
@@ -18,13 +18,12 @@
  */
 
 
-#ifndef __DEVICES_LNX_VIRTIO_H__
-#define __DEVICES_LNX_VIRTIO_H__
+#ifndef __DEVICES_LNX_VIRTIO_PCI_H__
+#define __DEVICES_LNX_VIRTIO_PCI_H__
 
 #ifdef __V3VEE__
 
 
-
 /* PCI Vendor IDs (from Qemu) */
 #define VIRTIO_VENDOR_ID    0x1af4 // Redhat/Qumranet
 #define VIRTIO_SUBVENDOR_ID 0x1af4 // Redhat/Qumranet
@@ -38,6 +37,19 @@
 
 #define VIRTIO_BLOCK_SUBDEVICE_ID 2
 
+
+
+#define HOST_FEATURES_PORT 0
+#define GUEST_FEATURES_PORT 4
+#define VRING_PG_NUM_PORT 8
+#define VRING_SIZE_PORT 12
+#define VRING_Q_SEL_PORT 14
+#define VRING_Q_NOTIFY_PORT 16
+#define VIRTIO_STATUS_PORT 18
+#define VIRTIO_ISR_PORT 19
+
+
+
 /* 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 
@@ -58,6 +70,31 @@ struct virtio_config {
 } __attribute__((packed));
 
 
+struct vring_desc {
+    uint64_t addr_gpa;
+    uint32_t length;
+    uint16_t flags;
+    uint16_t next;
+} __attribute__((packed));
+
+struct vring_avail {
+    uint16_t flags;
+    uint16_t index;
+    uint16_t ring[0];
+} __attribute__((packed));
+
+
+struct vring_used_elem {
+    uint32_t id;
+    uint32_t length;
+} __attribute__((packed));
+
+struct vring_used {
+    uint16_t flags;
+    uint16_t index;
+    struct vring_used_elem ring[0];
+} __attribute__((packed));
+