1 files changed, 85 insertions, 0 deletions
diff --git a/usr.sbin/bhyve/virtio.h b/usr.sbin/bhyve/virtio.h
new file mode 100644
index 0000000..474e244
--- /dev/null
+++ b/usr.sbin/bhyve/virtio.h
@@ -0,0 +1,85 @@
+/*-
+ * Copyright (c) 2011 NetApp, Inc.
+ * All rights reserved.
+ *
+ * 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 NETAPP, INC ``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 NETAPP, INC OR CONTRIBUTORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_VIRTIO_H_
+#define	_VIRTIO_H_
+
+#define VRING_ALIGN	4096
+
+#define VRING_DESC_F_NEXT	(1 << 0)
+#define VRING_DESC_F_WRITE	(1 << 1)
+#define VRING_DESC_F_INDIRECT	(1 << 2)
+
+#define VRING_AVAIL_F_NO_INTERRUPT   1
+
+struct virtio_desc {
+	uint64_t	vd_addr;
+	uint32_t	vd_len;
+	uint16_t	vd_flags;
+	uint16_t	vd_next;
+} __packed;
+
+struct virtio_used {
+	uint32_t	vu_idx;
+	uint32_t	vu_tlen;
+} __packed;
+
+/*
+ * PFN register shift amount
+ */
+#define VRING_PFN		12
+
+/*
+ * Virtio device types
+ */
+#define VIRTIO_TYPE_NET		1
+#define VIRTIO_TYPE_BLOCK	2
+
+/*
+ * PCI vendor/device IDs
+ */
+#define VIRTIO_VENDOR		0x1AF4
+#define VIRTIO_DEV_NET		0x1000
+#define VIRTIO_DEV_BLOCK	0x1001
+
+/*
+ * PCI config space constants
+ */
+#define VTCFG_R_HOSTCAP		0
+#define VTCFG_R_GUESTCAP	4
+#define VTCFG_R_PFN		8
+#define VTCFG_R_QNUM		12
+#define VTCFG_R_QSEL		14
+#define VTCFG_R_QNOTIFY		16
+#define VTCFG_R_STATUS		18
+#define VTCFG_R_ISR		19
+#define VTCFG_R_CFG0		20	/* No MSI-X */
+#define VTCFG_R_CFG1		24	/* With MSI-X */
+#define VTCFG_R_MSIX		20
+
+#endif	/* _VIRTIO_H_ */