include/sys/mhd.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_MHD_H
  28 #define _SYS_MHD_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*
  37  * Definitions for multi-host device I/O control commands
  38  */
  39 #define MHIOC                           ('M'<<8)
  40 #define MHIOCENFAILFAST                 (MHIOC|1)
  41 #define MHIOCTKOWN                      (MHIOC|2)
  42 #define MHIOCRELEASE                    (MHIOC|3)
  43 #define MHIOCSTATUS                     (MHIOC|4)
  44 #define MHIOCGRP_INKEYS                 (MHIOC|5)
  45 #define MHIOCGRP_INRESV                 (MHIOC|6)
  46 #define MHIOCGRP_REGISTER               (MHIOC|7)
  47 #define MHIOCGRP_RESERVE                (MHIOC|8)
  48 #define MHIOCGRP_PREEMPTANDABORT        (MHIOC|9)
  49 #define MHIOCGRP_PREEMPT                (MHIOC|10)
  50 #define MHIOCGRP_CLEAR                  (MHIOC|11)
  51 #define MHIOCGRP_REGISTERANDIGNOREKEY   (MHIOC|14)
  52 #define MHIOCQRESERVE                   (MHIOC|12)
  53 #define MHIOCREREGISTERDEVID            (MHIOC|13)
  54
  55 /*
  56  * Following is the structure to specify the delay parameters in
  57  * milliseconds, via the MHIOCTKOWN ioctl.
  58  */
  59 struct mhioctkown {
  60         int reinstate_resv_delay;
  61         int min_ownership_delay;
  62         int max_ownership_delay;
  63 };
  64
  65 #define MHIOC_RESV_KEY_SIZE     8
  66 typedef struct mhioc_resv_key {
  67         uchar_t key[MHIOC_RESV_KEY_SIZE];
  68 } mhioc_resv_key_t;
  69
  70 typedef struct mhioc_key_list {
  71         uint32_t                listsize;
  72         uint32_t                listlen;
  73         mhioc_resv_key_t        *list;
  74 } mhioc_key_list_t;
  75
  76 typedef struct mhioc_inkeys {
  77         uint32_t                generation;
  78         mhioc_key_list_t        *li;
  79 } mhioc_inkeys_t;
  80
  81 #if defined(_SYSCALL32)
  82 struct mhioc_key_list32 {
  83         uint32_t                listsize;
  84         uint32_t                listlen;
  85         caddr32_t               list;
  86 } mhioc_key_list32_t;
  87
  88 struct mhioc_inkeys32 {
  89         uint32_t                generation;
  90         caddr32_t               li;
  91 } mhioc_inkeys32_t;
  92 #endif
  93
  94 typedef struct mhioc_resv_desc {
  95         mhioc_resv_key_t        key;
  96         uint8_t                 type;
  97         uint8_t                 scope;
  98         uint32_t                scope_specific_addr;
  99 } mhioc_resv_desc_t;
 100
 101 typedef struct mhioc_resv_desc_list {
 102         uint32_t                listsize;
 103         uint32_t                listlen;
 104         mhioc_resv_desc_t       *list;
 105 } mhioc_resv_desc_list_t;
 106
 107 typedef struct mhioc_inresvs {
 108         uint32_t                generation;
 109         mhioc_resv_desc_list_t  *li;
 110 } mhioc_inresvs_t;
 111
 112 #if defined(_SYSCALL32)
 113 struct mhioc_resv_desc_list32 {
 114         uint32_t                listsize;
 115         uint32_t                listlen;
 116         caddr32_t               list;
 117 } mhioc_resv_desc_list32_t;
 118
 119 typedef struct mhioc_inresvs32 {
 120         uint32_t                generation;
 121         caddr32_t               li;
 122 } mhioc_inresvs32_t;
 123 #endif
 124
 125 typedef struct mhioc_register {
 126     mhioc_resv_key_t    oldkey;
 127     mhioc_resv_key_t    newkey;
 128     boolean_t           aptpl;  /* True if persistent across power failures */
 129 } mhioc_register_t;
 130
 131 typedef struct mhioc_preemptandabort {
 132     mhioc_resv_desc_t   resvdesc;
 133     mhioc_resv_key_t    victim_key;
 134 } mhioc_preemptandabort_t;
 135
 136 typedef struct mhioc_registerandignorekey {
 137     mhioc_resv_key_t    newkey;
 138     boolean_t           aptpl;  /* True if persistent across power failures */
 139 } mhioc_registerandignorekey_t;
 140
 141 /*
 142  * SCSI-3 PGR Reservation Type Codes.  Codes with the _OBSOLETE suffix
 143  * have been removed from the SCSI3 PGR standard.
 144  */
 145 #define SCSI3_RESV_READSHARED_OBSOLETE                  0
 146 #define SCSI3_RESV_WRITEEXCLUSIVE                       1
 147 #define SCSI3_RESV_READEXCLUSIVE_OBSOLETE               2
 148 #define SCSI3_RESV_EXCLUSIVEACCESS                      3
 149 #define SCSI3_RESV_SHAREDACCESS_OBSOLETE                4
 150 #define SCSI3_RESV_WRITEEXCLUSIVEREGISTRANTSONLY        5
 151 #define SCSI3_RESV_EXCLUSIVEACCESSREGISTRANTSONLY       6
 152
 153 #define SCSI3_SCOPE_LOGICALUNIT                         0
 154 #define SCSI3_SCOPE_EXTENT_OBSOLETE                     1
 155 #define SCSI3_SCOPE_ELEMENT                             2
 156
 157 #ifdef __cplusplus
 158 }
 159 #endif
 160
 161 #endif  /* _SYS_MHD_H */