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/*-
* Copyright (c) 2016 Microsoft Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _VMBUS_REG_H_
#define _VMBUS_REG_H_
#include <sys/param.h>
/*
* Hyper-V SynIC message format.
*/
#define VMBUS_MSG_DSIZE_MAX 240
#define VMBUS_MSG_SIZE 256
struct vmbus_message {
uint32_t msg_type; /* VMBUS_MSGTYPE_ */
uint8_t msg_dsize; /* data size */
uint8_t msg_flags; /* VMBUS_MSGFLAG_ */
uint16_t msg_rsvd;
uint64_t msg_id;
uint8_t msg_data[VMBUS_MSG_DSIZE_MAX];
} __packed;
CTASSERT(sizeof(struct vmbus_message) == VMBUS_MSG_SIZE);
#define VMBUS_MSGTYPE_NONE 0
#define VMBUS_MSGTYPE_CHANNEL 1
#define VMBUS_MSGTYPE_TIMER_EXPIRED 0x80000010
#define VMBUS_MSGFLAG_PENDING 0x01
/*
* Hyper-V SynIC event flags
*/
#ifdef __LP64__
#define VMBUS_EVTFLAGS_MAX 32
#define VMBUS_EVTFLAG_SHIFT 6
#else
#define VMBUS_EVTFLAGS_MAX 64
#define VMBUS_EVTFLAG_SHIFT 5
#endif
#define VMBUS_EVTFLAG_LEN (1 << VMBUS_EVTFLAG_SHIFT)
#define VMBUS_EVTFLAGS_SIZE 256
struct vmbus_evtflags {
u_long evt_flags[VMBUS_EVTFLAGS_MAX];
} __packed;
CTASSERT(sizeof(struct vmbus_evtflags) == VMBUS_EVTFLAGS_SIZE);
/*
* Channel
*/
#define VMBUS_CHAN_MAX_COMPAT 256
#define VMBUS_CHAN_MAX (VMBUS_EVTFLAG_LEN * VMBUS_EVTFLAGS_MAX)
#endif /* !_VMBUS_REG_H_ */
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