1 files changed, 43 insertions, 0 deletions
diff --git a/roms/seabios/src/hw/virtio-blk.h b/roms/seabios/src/hw/virtio-blk.h
new file mode 100644
index 000000000..b233c744b
--- /dev/null
+++ b/roms/seabios/src/hw/virtio-blk.h
@@ -0,0 +1,43 @@
+#ifndef _VIRTIO_BLK_H
+#define _VIRTIO_BLK_H
+
+struct virtio_blk_config
+{
+    u64 capacity;
+    u32 size_max;
+    u32 seg_max;
+    u16 cylinders;
+    u8 heads;
+    u8 sectors;
+    u32 blk_size;
+    u8 physical_block_exp;
+    u8 alignment_offset;
+    u16 min_io_size;
+    u32 opt_io_size;
+} __attribute__((packed));
+
+#define VIRTIO_BLK_F_BLK_SIZE 6
+
+/* These two define direction. */
+#define VIRTIO_BLK_T_IN         0
+#define VIRTIO_BLK_T_OUT        1
+
+/* This is the first element of the read scatter-gather list. */
+struct virtio_blk_outhdr {
+    /* VIRTIO_BLK_T* */
+    u32 type;
+    /* io priority. */
+    u32 ioprio;
+    /* Sector (ie. 512 byte offset) */
+    u64 sector;
+};
+
+#define VIRTIO_BLK_S_OK         0
+#define VIRTIO_BLK_S_IOERR      1
+#define VIRTIO_BLK_S_UNSUPP     2
+
+struct disk_op_s;
+int process_virtio_blk_op(struct disk_op_s *op);
+void virtio_blk_setup(void);
+
+#endif /* _VIRTIO_BLK_H */