Move vioblkreg.h to sys/dev/pv/vioblkreg.h

virtio itself is not PCI, it is a paravirtual bus on top of either PCI
or MMIO (arm).  This is the second step of moving the virtio files to
dev/pv.  No functional change.

Moving the file is done by removing and adding it again - the old
history can be found in the Attic of sys/dev/pci/vioblkreg.h.

no objections from sf@ mlarkin@

1 files changed, 77 insertions, 0 deletions

diff --git a/sys/dev/pv/vioblkreg.h b/sys/dev/pv/vioblkreg.h
new file mode 100644
index 00000000000..61faf953d9a
--- /dev/null
+++ b/sys/dev/pv/vioblkreg.h
@@ -0,0 +1,77 @@
+/*	$OpenBSD: vioblkreg.h,v 1.1 2017/01/21 11:22:34 reyk Exp $	*/
+
+/*
+ * Copyright (c) 2012 Stefan Fritsch.
+ * Copyright (c) 2010 Minoura Makoto.
+ * Copyright (c) 1998, 2001 Manuel Bouyer.
+ * All rights reserved.
+ *
+ * This code is based in part on the NetBSD ld_virtio driver and the
+ * OpenBSD wd driver.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *	notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *	notice, this list of conditions and the following disclaimer in the
+ *	documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Configuration registers */
+#define VIRTIO_BLK_CONFIG_CAPACITY	0 /* 64bit */
+#define VIRTIO_BLK_CONFIG_SIZE_MAX	8 /* 32bit */
+#define VIRTIO_BLK_CONFIG_SEG_MAX	12 /* 32bit */
+#define VIRTIO_BLK_CONFIG_GEOMETRY_C	16 /* 16bit */
+#define VIRTIO_BLK_CONFIG_GEOMETRY_H	18 /* 8bit */
+#define VIRTIO_BLK_CONFIG_GEOMETRY_S	19 /* 8bit */
+#define VIRTIO_BLK_CONFIG_BLK_SIZE	20 /* 32bit */
+
+/* Feature bits */
+#define VIRTIO_BLK_F_BARRIER	(1<<0)
+#define VIRTIO_BLK_F_SIZE_MAX	(1<<1)
+#define VIRTIO_BLK_F_SEG_MAX	(1<<2)
+#define VIRTIO_BLK_F_GEOMETRY	(1<<4)
+#define VIRTIO_BLK_F_RO		(1<<5)
+#define VIRTIO_BLK_F_BLK_SIZE	(1<<6)
+#define VIRTIO_BLK_F_SCSI	(1<<7)
+#define VIRTIO_BLK_F_FLUSH	(1<<9)
+#define VIRTIO_BLK_F_TOPOLOGY	(1<<10)
+
+/* Command */
+#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_GET_ID		8 /* from qemu, not in spec, yet */
+#define VIRTIO_BLK_T_BARRIER		0x80000000
+
+/* Status */
+#define VIRTIO_BLK_S_OK		0
+#define VIRTIO_BLK_S_IOERR	1
+
+#define VIRTIO_BLK_ID_BYTES	20 /* length of serial number */
+
+/* Request header structure */
+struct virtio_blk_req_hdr {
+	uint32_t	type;	/* VIRTIO_BLK_T_* */
+	uint32_t	ioprio;
+	uint64_t	sector;
+} __packed;
+/* 512*virtio_blk_req_hdr.sector byte payload and 1 byte status follows */
+
+#define VIRTIO_BLK_SECTOR_SIZE	512