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 } __attribute__((packed));
  47
  48 struct ic_version {
  49         u16 major;
  50         u16 minor;
  51 } __attribute__((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 } __attribute__((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 } __attribute__((packed));
  70
  71 struct shutdown_msg_data {
  72         u32 reason_code;
  73         u32 timeout_seconds;
  74         u32 flags;
  75         u8  display_message[2048];
  76 } __attribute__((packed));
  77
  78 #define HV_SHUTDOWN_MSG         0
  79
  80 struct hyperv_service_callback {
  81         u8 msg_type;
  82         char *log_msg;
  83         unsigned char data[16];
  84         struct vmbus_channel *channel;
  85         void (*callback) (void *context);
  86 };
  87
  88 extern void prep_negotiate_resp(struct icmsg_hdr *,
  89                                 struct icmsg_negotiate *, u8 *);
  90 extern void chn_cb_negotiate(void *);
  91 extern struct hyperv_service_callback hv_cb_utils[];
  92
  93 #endif /* __HV_UTILS_H_ */