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Diffstat (limited to 'usr.sbin/bhyve/virtio.h')
-rw-r--r-- | usr.sbin/bhyve/virtio.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/usr.sbin/bhyve/virtio.h b/usr.sbin/bhyve/virtio.h new file mode 100644 index 0000000..04ef586 --- /dev/null +++ b/usr.sbin/bhyve/virtio.h @@ -0,0 +1,88 @@ +/*- + * 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 +#define VIRTIO_MSI_NO_VECTOR 0xFFFF + +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_CFGVEC 20 +#define VTCFG_R_QVEC 22 +#define VTCFG_R_CFG0 20 /* No MSI-X */ +#define VTCFG_R_CFG1 24 /* With MSI-X */ +#define VTCFG_R_MSIX 20 + +#endif /* _VIRTIO_H_ */ |