FreeBSD/Linux Kernel Cross Reference
sys/dev/hyperv/utilities/vmbus_icreg.h

     /*-
      * 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_ICREG_H_
    #define _VMBUS_ICREG_H_
    
    #define VMBUS_ICMSG_TYPE_NEGOTIATE      0
    #define VMBUS_ICMSG_TYPE_HEARTBEAT      1
    #define VMBUS_ICMSG_TYPE_KVP            2
    #define VMBUS_ICMSG_TYPE_SHUTDOWN       3
    #define VMBUS_ICMSG_TYPE_TIMESYNC       4
    #define VMBUS_ICMSG_TYPE_VSS            5
    
    #define VMBUS_ICMSG_STATUS_OK           0x00000000
    #define VMBUS_ICMSG_STATUS_FAIL         0x80004005
    
    #define VMBUS_IC_VERSION(major, minor)  ((major) | (((uint32_t)(minor)) << 16))
    #define VMBUS_ICVER_MAJOR(ver)          ((ver) & 0xffff)
    #define VMBUS_ICVER_MINOR(ver)          (((ver) & 0xffff0000) >> 16)
    #define VMBUS_ICVER_SWAP(ver)           \
            ((VMBUS_ICVER_MAJOR((ver)) << 16) | VMBUS_ICVER_MINOR((ver)))
    #define VMBUS_ICVER_LE(v1, v2)          \
            (VMBUS_ICVER_SWAP((v1)) <= VMBUS_ICVER_SWAP((v2)))
    #define VMBUS_ICVER_GT(v1, v2)          \
            (VMBUS_ICVER_SWAP((v1)) > VMBUS_ICVER_SWAP((v2)))
    
    struct vmbus_pipe_hdr {
            uint32_t                ph_flags;
            uint32_t                ph_msgsz;
    } __packed;
    
    struct vmbus_icmsg_hdr {
            struct vmbus_pipe_hdr   ic_pipe;
            uint32_t                ic_fwver;       /* framework version */
            uint16_t                ic_type;
            uint32_t                ic_msgver;      /* message version */
            uint16_t                ic_dsize;       /* data size */
            uint32_t                ic_status;      /* VMBUS_ICMSG_STATUS_ */
            uint8_t                 ic_xactid;
            uint8_t                 ic_flags;       /* VMBUS_ICMSG_FLAG_ */
            uint8_t                 ic_rsvd[2];
    } __packed;
    
    #define VMBUS_ICMSG_FLAG_XACT           0x0001
    #define VMBUS_ICMSG_FLAG_REQ            0x0002
    #define VMBUS_ICMSG_FLAG_RESP           0x0004
    
    /* VMBUS_ICMSG_TYPE_NEGOTIATE */
    struct vmbus_icmsg_negotiate {
            struct vmbus_icmsg_hdr  ic_hdr;
            uint16_t                ic_fwver_cnt;
            uint16_t                ic_msgver_cnt;
            uint32_t                ic_rsvd;
            /*
             * This version array contains two set of supported
             * versions:
             * - The first set consists of #ic_fwver_cnt supported framework
             *   versions.
             * - The second set consists of #ic_msgver_cnt supported message
             *   versions.
             */
            uint32_t                ic_ver[];
    } __packed;
    
    /* VMBUS_ICMSG_TYPE_HEARTBEAT */
    struct vmbus_icmsg_heartbeat {
            struct vmbus_icmsg_hdr  ic_hdr;
            uint64_t                ic_seq;
            uint32_t                ic_rsvd[8];
    } __packed;
    
    #define VMBUS_ICMSG_HEARTBEAT_SIZE_MIN  \
            __offsetof(struct vmbus_icmsg_heartbeat, ic_rsvd[0])
    
   /* VMBUS_ICMSG_TYPE_SHUTDOWN */
   struct vmbus_icmsg_shutdown {
           struct vmbus_icmsg_hdr  ic_hdr;
           uint32_t                ic_code;
           uint32_t                ic_timeo;
           uint32_t                ic_haltflags;
           uint8_t                 ic_msg[2048];
   } __packed;
   
   #define VMBUS_ICMSG_SHUTDOWN_SIZE_MIN   \
           __offsetof(struct vmbus_icmsg_shutdown, ic_msg[0])
   
   /* VMBUS_ICMSG_TYPE_TIMESYNC */
   struct vmbus_icmsg_timesync {
           struct vmbus_icmsg_hdr  ic_hdr;
           uint64_t                ic_hvtime;
           uint64_t                ic_vmtime;
           uint64_t                ic_rtt;
           uint8_t                 ic_tsflags;     /* VMBUS_ICMSG_TS_FLAG_ */
   } __packed;
   
   /* VMBUS_ICMSG_TYPE_TIMESYNC, MSGVER4 */
   struct vmbus_icmsg_timesync4 {
           struct vmbus_icmsg_hdr  ic_hdr;
           uint64_t                ic_hvtime;
           uint64_t                ic_sent_tc;
           uint8_t                 ic_tsflags;     /* VMBUS_ICMSG_TS_FLAG_ */
           uint8_t                 ic_rsvd[5];
   } __packed;
   
   #define VMBUS_ICMSG_TS_FLAG_SYNC        0x01
   #define VMBUS_ICMSG_TS_FLAG_SAMPLE      0x02
   
   #define VMBUS_ICMSG_TS_BASE             116444736000000000ULL
   
   #endif  /* !_VMBUS_ICREG_H_ */

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