summaryrefslogtreecommitdiffstats
path: root/qemu/roms/SLOF/lib/libvirtio/virtio-blk.h
diff options
context:
space:
mode:
Diffstat (limited to 'qemu/roms/SLOF/lib/libvirtio/virtio-blk.h')
-rw-r--r--qemu/roms/SLOF/lib/libvirtio/virtio-blk.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/qemu/roms/SLOF/lib/libvirtio/virtio-blk.h b/qemu/roms/SLOF/lib/libvirtio/virtio-blk.h
new file mode 100644
index 000000000..ac8bf2896
--- /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 */