vmbus.h revision 307455 
1/*-
2 * Copyright (c) 2016 Microsoft Corp.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice unmodified, this list of conditions, and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/11/sys/dev/hyperv/include/vmbus.h 307455 2016-10-17 02:30:45Z sephe $
27 */
28
29#ifndef _VMBUS_H_
30#define _VMBUS_H_
31
32#include <sys/param.h>
33
34/*
35 * GPA stuffs.
36 */
37struct vmbus_gpa_range {
38	uint32_t	gpa_len;
39	uint32_t	gpa_ofs;
40	uint64_t	gpa_page[0];
41} __packed;
42
43/* This is actually vmbus_gpa_range.gpa_page[1] */
44struct vmbus_gpa {
45	uint32_t	gpa_len;
46	uint32_t	gpa_ofs;
47	uint64_t	gpa_page;
48} __packed;
49
50#define VMBUS_CHANPKT_TYPE_INBAND	0x0006
51#define VMBUS_CHANPKT_TYPE_RXBUF	0x0007
52#define VMBUS_CHANPKT_TYPE_GPA		0x0009
53#define VMBUS_CHANPKT_TYPE_COMP		0x000b
54
55#define VMBUS_CHANPKT_FLAG_RC		0x0001	/* report completion */
56
57#define VMBUS_CHAN_SGLIST_MAX		32
58#define VMBUS_CHAN_PRPLIST_MAX		32
59
60struct hv_vmbus_channel;
61
62int	vmbus_chan_send_sglist(struct hv_vmbus_channel *chan,
63	    struct vmbus_gpa sg[], int sglen, void *data, int dlen,
64	    uint64_t xactid);
65int	vmbus_chan_send_prplist(struct hv_vmbus_channel *chan,
66	    struct vmbus_gpa_range *prp, int prp_cnt, void *data, int dlen,
67	    uint64_t xactid);
68
69#endif	/* !_VMBUS_H_ */
70