Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / SLOF / lib / libvirtio / virtio-blk.h

diff --git a/qemu/roms/SLOF/lib/libvirtio/virtio-blk.h b/qemu/roms/SLOF/lib/libvirtio/virtio-blk.h
new file mode 100644 (file)
index 0000000..ac8bf28
--- /dev/null
+++ b/qemu/roms/SLOF/lib/libvirtio/virtio-blk.h
@@ -0,0 +1,60 @@
+/******************************************************************************
+ * Copyright (c) 2011 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+/*
+ * Virtio block device definitions.
+ * See Virtio Spec, Appendix D, for details
+ */
+
+#ifndef _VIRTIO_BLK_H
+#define _VIRTIO_BLK_H
+
+#include <stdint.h>
+
+
+struct virtio_blk_cfg {
+       uint64_t        capacity;
+       uint32_t        size_max;
+       uint32_t        seg_max;
+       struct  virtio_blk_geometry {
+               uint16_t        cylinders;
+               uint8_t         heads;
+               uint8_t         sectors;
+       } geometry;
+       uint32_t        blk_size;
+       uint32_t        sectors_max;
+} __attribute__ ((packed)) ;
+
+/* Block request */
+struct virtio_blk_req {
+       uint32_t  type ;
+       uint32_t  ioprio ;
+       uint64_t  sector ;
+};
+
+/* Block request types */
+#define VIRTIO_BLK_T_IN                        0
+#define VIRTIO_BLK_T_OUT               1
+#define VIRTIO_BLK_T_SCSI_CMD          2
+#define VIRTIO_BLK_T_SCSI_CMD_OUT      3
+#define VIRTIO_BLK_T_FLUSH             4
+#define VIRTIO_BLK_T_FLUSH_OUT         5
+#define VIRTIO_BLK_T_BARRIER           0x80000000
+
+/* VIRTIO_BLK Feature bits */
+#define VIRTIO_BLK_F_BLK_SIZE       (1 << 6)
+
+extern int virtioblk_init(struct virtio_device *dev);
+extern void virtioblk_shutdown(struct virtio_device *dev);
+extern int virtioblk_read(struct virtio_device *dev, char *buf, long blocknum, long cnt);
+
+#endif  /* _VIRTIO_BLK_H */