2 * Copyright (c) 2016 Microsoft Corp.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
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.
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
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24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #ifndef _VMBUS_XACT_H_
30 #define _VMBUS_XACT_H_
32 #include <sys/param.h>
34 #include <machine/bus.h>
37 struct vmbus_xact_ctx;
39 struct vmbus_xact_ctx *vmbus_xact_ctx_create(bus_dma_tag_t dtag,
40 size_t req_size, size_t resp_size,
42 void vmbus_xact_ctx_destroy(struct vmbus_xact_ctx *ctx);
43 struct vmbus_xact *vmbus_xact_get(struct vmbus_xact_ctx *ctx,
45 void vmbus_xact_put(struct vmbus_xact *xact);
47 void *vmbus_xact_req_data(const struct vmbus_xact *xact);
48 bus_addr_t vmbus_xact_req_paddr(const struct vmbus_xact *xact);
49 void *vmbus_xact_priv(const struct vmbus_xact *xact,
51 void vmbus_xact_activate(struct vmbus_xact *xact);
52 void vmbus_xact_deactivate(struct vmbus_xact *xact);
53 const void *vmbus_xact_wait(struct vmbus_xact *xact,
55 const void *vmbus_xact_busywait(struct vmbus_xact *xact,
57 void vmbus_xact_wakeup(struct vmbus_xact *xact,
58 const void *data, size_t dlen);
59 void vmbus_xact_ctx_wakeup(struct vmbus_xact_ctx *ctx,
60 const void *data, size_t dlen);
62 #endif /* !_VMBUS_XACT_H_ */