vmbus_xact.h revision 311367 
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_xact.h 311367 2017-01-05 05:46:06Z sephe $
27 */
28
29#ifndef _VMBUS_XACT_H_
30#define _VMBUS_XACT_H_
31
32#include <sys/param.h>
33#include <sys/bus.h>
34
35struct vmbus_xact;
36struct vmbus_xact_ctx;
37
38struct vmbus_xact_ctx	*vmbus_xact_ctx_create(bus_dma_tag_t dtag,
39			    size_t req_size, size_t resp_size,
40			    size_t priv_size);
41void			vmbus_xact_ctx_destroy(struct vmbus_xact_ctx *ctx);
42bool			vmbus_xact_ctx_orphan(struct vmbus_xact_ctx *ctx);
43
44struct vmbus_xact	*vmbus_xact_get(struct vmbus_xact_ctx *ctx,
45			    size_t req_len);
46void			vmbus_xact_put(struct vmbus_xact *xact);
47
48void			*vmbus_xact_req_data(const struct vmbus_xact *xact);
49bus_addr_t		vmbus_xact_req_paddr(const struct vmbus_xact *xact);
50void			*vmbus_xact_priv(const struct vmbus_xact *xact,
51			    size_t priv_len);
52void			vmbus_xact_activate(struct vmbus_xact *xact);
53void			vmbus_xact_deactivate(struct vmbus_xact *xact);
54const void		*vmbus_xact_wait(struct vmbus_xact *xact,
55			    size_t *resp_len);
56const void		*vmbus_xact_busywait(struct vmbus_xact *xact,
57			    size_t *resp_len);
58const void		*vmbus_xact_poll(struct vmbus_xact *xact,
59			    size_t *resp_len);
60void			vmbus_xact_wakeup(struct vmbus_xact *xact,
61			    const void *data, size_t dlen);
62void			vmbus_xact_ctx_wakeup(struct vmbus_xact_ctx *ctx,
63			    const void *data, size_t dlen);
64
65#endif	/* !_VMBUS_XACT_H_ */
66