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64 lines
2.6 KiB
C
64 lines
2.6 KiB
C
/*-
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* Copyright (c) 2016 Microsoft Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _VMBUS_XACT_H_
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#define _VMBUS_XACT_H_
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#include <sys/param.h>
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#include <sys/bus.h>
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struct vmbus_xact;
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struct vmbus_xact_ctx;
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struct vmbus_xact_ctx *vmbus_xact_ctx_create(bus_dma_tag_t dtag,
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size_t req_size, size_t resp_size,
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size_t priv_size);
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void vmbus_xact_ctx_destroy(struct vmbus_xact_ctx *ctx);
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bool vmbus_xact_ctx_orphan(struct vmbus_xact_ctx *ctx);
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struct vmbus_xact *vmbus_xact_get(struct vmbus_xact_ctx *ctx,
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size_t req_len);
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void vmbus_xact_put(struct vmbus_xact *xact);
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void *vmbus_xact_req_data(const struct vmbus_xact *xact);
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bus_addr_t vmbus_xact_req_paddr(const struct vmbus_xact *xact);
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void *vmbus_xact_priv(const struct vmbus_xact *xact,
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size_t priv_len);
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void vmbus_xact_activate(struct vmbus_xact *xact);
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void vmbus_xact_deactivate(struct vmbus_xact *xact);
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const void *vmbus_xact_wait(struct vmbus_xact *xact,
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size_t *resp_len);
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const void *vmbus_xact_busywait(struct vmbus_xact *xact,
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size_t *resp_len);
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const void *vmbus_xact_poll(struct vmbus_xact *xact,
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size_t *resp_len);
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void vmbus_xact_wakeup(struct vmbus_xact *xact,
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const void *data, size_t dlen);
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void vmbus_xact_ctx_wakeup(struct vmbus_xact_ctx *ctx,
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const void *data, size_t dlen);
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#endif /* !_VMBUS_XACT_H_ */
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