b3a6435528
MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D7134
116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/*-
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* Copyright (c) 2009-2012,2016 Microsoft Corp.
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* Copyright (c) 2012 NetApp Inc.
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* Copyright (c) 2012 Citrix Inc.
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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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* $FreeBSD$
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*/
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#ifndef __HYPERV_PRIV_H__
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#define __HYPERV_PRIV_H__
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sema.h>
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#include <sys/_iovec.h>
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#include <dev/hyperv/include/hyperv.h>
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struct vmbus_softc;
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/*
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* The format must be the same as hv_vm_data_gpa_direct
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*/
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typedef struct hv_vmbus_channel_packet_page_buffer {
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uint16_t type;
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uint16_t data_offset8;
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uint16_t length8;
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uint16_t flags;
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uint64_t transaction_id;
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uint32_t reserved;
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uint32_t range_count;
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hv_vmbus_page_buffer range[HV_MAX_PAGE_BUFFER_COUNT];
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} __packed hv_vmbus_channel_packet_page_buffer;
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/*
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* The format must be the same as hv_vm_data_gpa_direct
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*/
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typedef struct hv_vmbus_channel_packet_multipage_buffer {
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uint16_t type;
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uint16_t data_offset8;
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uint16_t length8;
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uint16_t flags;
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uint64_t transaction_id;
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uint32_t reserved;
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uint32_t range_count; /* Always 1 in this case */
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hv_vmbus_multipage_buffer range;
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} __packed hv_vmbus_channel_packet_multipage_buffer;
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/*
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* Private, VM Bus functions
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*/
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struct sysctl_ctx_list;
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struct sysctl_oid_list;
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void hv_ring_buffer_stat(
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struct sysctl_ctx_list *ctx,
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struct sysctl_oid_list *tree_node,
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hv_vmbus_ring_buffer_info *rbi,
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const char *desc);
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int hv_vmbus_ring_buffer_init(
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hv_vmbus_ring_buffer_info *ring_info,
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void *buffer,
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uint32_t buffer_len);
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void hv_ring_buffer_cleanup(
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hv_vmbus_ring_buffer_info *ring_info);
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int hv_ring_buffer_write(
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hv_vmbus_ring_buffer_info *ring_info,
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const struct iovec iov[],
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uint32_t iovlen,
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boolean_t *need_sig);
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int hv_ring_buffer_peek(
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hv_vmbus_ring_buffer_info *ring_info,
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void *buffer,
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uint32_t buffer_len);
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int hv_ring_buffer_read(
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hv_vmbus_ring_buffer_info *ring_info,
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void *buffer,
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uint32_t buffer_len,
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uint32_t offset);
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void hv_ring_buffer_read_begin(
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hv_vmbus_ring_buffer_info *ring_info);
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uint32_t hv_ring_buffer_read_end(
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hv_vmbus_ring_buffer_info *ring_info);
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#endif /* __HYPERV_PRIV_H__ */
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