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 * $FreeBSD$ 27 */ 28 29 #ifndef _VMBUS_REG_H_ 30 #define _VMBUS_REG_H_ 31 32 #include <sys/param.h> 33 34 /* 35 * Hyper-V SynIC message format. 36 */ 37 38 #define VMBUS_MSG_DSIZE_MAX 240 39 #define VMBUS_MSG_SIZE 256 40 41 struct vmbus_message { 42 uint32_t msg_type; /* VMBUS_MSGTYPE_ */ 43 uint8_t msg_dsize; /* data size */ 44 uint8_t msg_flags; /* VMBUS_MSGFLAG_ */ 45 uint16_t msg_rsvd; 46 uint64_t msg_id; 47 uint8_t msg_data[VMBUS_MSG_DSIZE_MAX]; 48 } __packed; 49 CTASSERT(sizeof(struct vmbus_message) == VMBUS_MSG_SIZE); 50 51 #define VMBUS_MSGTYPE_NONE 0 52 #define VMBUS_MSGTYPE_TIMER_EXPIRED 0x80000010 53 54 #define VMBUS_MSGFLAG_PENDING 0x01 55 56 /* 57 * Hyper-V SynIC event flags 58 */ 59 60 #ifdef __LP64__ 61 #define VMBUS_EVTFLAGS_MAX 32 62 #define VMBUS_EVTFLAG_SHIFT 6 63 #else 64 #define VMBUS_EVTFLAGS_MAX 64 65 #define VMBUS_EVTFLAG_SHIFT 5 66 #endif 67 #define VMBUS_EVTFLAG_LEN (1 << VMBUS_EVTFLAG_SHIFT) 68 #define VMBUS_EVTFLAGS_SIZE 256 69 70 struct vmbus_evtflags { 71 u_long evt_flags[VMBUS_EVTFLAGS_MAX]; 72 } __packed; 73 CTASSERT(sizeof(struct vmbus_evtflags) == VMBUS_EVTFLAGS_SIZE); 74 75 /* 76 * Channel 77 */ 78 79 #define VMBUS_CHAN_MAX_COMPAT 256 80 #define VMBUS_CHAN_MAX (VMBUS_EVTFLAG_LEN * VMBUS_EVTFLAGS_MAX) 81 82 #endif /* !_VMBUS_REG_H_ */ 83