drivers/staging/hv/utils.h

   1 /*
   2  * Copyright (c) 2009, Microsoft Corporation.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms and conditions of the GNU General Public License,
   6  * version 2, as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  15  * Place - Suite 330, Boston, MA 02111-1307 USA.
  16  *
  17  * Authors:
  18  *   Haiyang Zhang <haiyangz@microsoft.com>
  19  *   Hank Janssen  <hjanssen@microsoft.com>
  20  */
  21 #ifndef __HV_UTILS_H_
  22 #define __HV_UTILS_H_
  23
  24 /*
  25  * Common header for Hyper-V ICs
  26  */
  27 #define ICMSGTYPE_NEGOTIATE             0
  28 #define ICMSGTYPE_HEARTBEAT             1
  29 #define ICMSGTYPE_KVPEXCHANGE           2
  30 #define ICMSGTYPE_SHUTDOWN              3
  31 #define ICMSGTYPE_TIMESYNC              4
  32 #define ICMSGTYPE_VSS                   5
  33
  34 #define ICMSGHDRFLAG_TRANSACTION        1
  35 #define ICMSGHDRFLAG_REQUEST            2
  36 #define ICMSGHDRFLAG_RESPONSE           4
  37
  38 #define HV_S_OK                         0x00000000
  39 #define HV_E_FAIL                       0x80004005
  40 #define HV_ERROR_NOT_SUPPORTED          0x80070032
  41 #define HV_ERROR_MACHINE_LOCKED         0x800704F7
  42
  43 struct vmbuspipe_hdr {
  44         u32 flags;
  45         u32 msgsize;
  46 } __packed;
  47
  48 struct ic_version {
  49         u16 major;
  50         u16 minor;
  51 } __packed;
  52
  53 struct icmsg_hdr {
  54         struct ic_version icverframe;
  55         u16 icmsgtype;
  56         struct ic_version icvermsg;
  57         u16 icmsgsize;
  58         u32 status;
  59         u8 ictransaction_id;
  60         u8 icflags;
  61         u8 reserved[2];
  62 } __packed;
  63
  64 struct icmsg_negotiate {
  65         u16 icframe_vercnt;
  66         u16 icmsg_vercnt;
  67         u32 reserved;
  68         struct ic_version icversion_data[1]; /* any size array */
  69 } __packed;
  70
  71 struct shutdown_msg_data {
  72         u32 reason_code;
  73         u32 timeout_seconds;
  74         u32 flags;
  75         u8  display_message[2048];
  76 } __packed;
  77
  78 struct heartbeat_msg_data {
  79         u64 seq_num;
  80         u32 reserved[8];
  81 } __packed;
  82
  83 /* Time Sync IC defs */
  84 #define ICTIMESYNCFLAG_PROBE    0
  85 #define ICTIMESYNCFLAG_SYNC     1
  86 #define ICTIMESYNCFLAG_SAMPLE   2
  87
  88 #ifdef __x86_64__
  89 #define WLTIMEDELTA     116444736000000000L     /* in 100ns unit */
  90 #else
  91 #define WLTIMEDELTA     116444736000000000LL
  92 #endif
  93
  94 struct ictimesync_data{
  95         u64 parenttime;
  96         u64 childtime;
  97         u64 roundtriptime;
  98         u8 flags;
  99 } __packed;
 100
 101 /* Index for each IC struct in array hv_cb_utils[] */
 102 #define HV_SHUTDOWN_MSG         0
 103 #define HV_TIMESYNC_MSG         1
 104 #define HV_HEARTBEAT_MSG        2
 105 #define HV_KVP_MSG              3
 106
 107 struct hyperv_service_callback {
 108         u8 msg_type;
 109         char *log_msg;
 110         unsigned char data[16];
 111         struct vmbus_channel *channel;
 112         void (*callback) (void *context);
 113 };
 114
 115 extern void prep_negotiate_resp(struct icmsg_hdr *,
 116                                 struct icmsg_negotiate *, u8 *);
 117 extern void chn_cb_negotiate(void *);
 118 extern struct hyperv_service_callback hv_cb_utils[];
 119
 120 #endif /* __HV_UTILS_H_ */