Move virtio to a separate library

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/lib/libvirtio/virtio-blk.h b/lib/libvirtio/virtio-blk.h
new file mode 100644
index 0000000..7c2b7e0
--- /dev/null
+++ b/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>
+
+
+/* Device configuration layout */
+/*
+struct virtio_blk_config {
+	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;
+};
+*/
+
+/* 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
+
+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 */