lib/libspl/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 https://opensource.org/licenses/CDDL-1.0.
  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 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /*
  35  * Definitions for multi-host device I/O control commands
  36  */
  37 #define MHIOC                           ('M'<<8)
  38 #define MHIOCENFAILFAST                 (MHIOC|1)
  39 #define MHIOCTKOWN                      (MHIOC|2)
  40 #define MHIOCRELEASE                    (MHIOC|3)
  41 #define MHIOCSTATUS                     (MHIOC|4)
  42 #define MHIOCGRP_INKEYS                 (MHIOC|5)
  43 #define MHIOCGRP_INRESV                 (MHIOC|6)
  44 #define MHIOCGRP_REGISTER               (MHIOC|7)
  45 #define MHIOCGRP_RESERVE                (MHIOC|8)
  46 #define MHIOCGRP_PREEMPTANDABORT        (MHIOC|9)
  47 #define MHIOCGRP_PREEMPT                (MHIOC|10)
  48 #define MHIOCGRP_CLEAR                  (MHIOC|11)
  49 #define MHIOCGRP_REGISTERANDIGNOREKEY   (MHIOC|14)
  50 #define MHIOCQRESERVE                   (MHIOC|12)
  51 #define MHIOCREREGISTERDEVID            (MHIOC|13)
  52
  53 /*
  54  * Following is the structure to specify the delay parameters in
  55  * milliseconds, via the MHIOCTKOWN ioctl.
  56  */
  57 struct mhioctkown {
  58         int reinstate_resv_delay;
  59         int min_ownership_delay;
  60         int max_ownership_delay;
  61 };
  62
  63 #define MHIOC_RESV_KEY_SIZE     8
  64 typedef struct mhioc_resv_key {
  65         uchar_t key[MHIOC_RESV_KEY_SIZE];
  66 } mhioc_resv_key_t;
  67
  68 typedef struct mhioc_key_list {
  69         uint32_t                listsize;
  70         uint32_t                listlen;
  71         mhioc_resv_key_t        *list;
  72 } mhioc_key_list_t;
  73
  74 typedef struct mhioc_inkeys {
  75         uint32_t                generation;
  76         mhioc_key_list_t        *li;
  77 } mhioc_inkeys_t;
  78
  79 #if defined(_SYSCALL32)
  80 struct mhioc_key_list32 {
  81         uint32_t                listsize;
  82         uint32_t                listlen;
  83         caddr32_t               list;
  84 } mhioc_key_list32_t;
  85
  86 struct mhioc_inkeys32 {
  87         uint32_t                generation;
  88         caddr32_t               li;
  89 } mhioc_inkeys32_t;
  90 #endif
  91
  92 typedef struct mhioc_resv_desc {
  93         mhioc_resv_key_t        key;
  94         uint8_t                 type;
  95         uint8_t                 scope;
  96         uint32_t                scope_specific_addr;
  97 } mhioc_resv_desc_t;
  98
  99 typedef struct mhioc_resv_desc_list {
 100         uint32_t                listsize;
 101         uint32_t                listlen;
 102         mhioc_resv_desc_t       *list;
 103 } mhioc_resv_desc_list_t;
 104
 105 typedef struct mhioc_inresvs {
 106         uint32_t                generation;
 107         mhioc_resv_desc_list_t  *li;
 108 } mhioc_inresvs_t;
 109
 110 #if defined(_SYSCALL32)
 111 struct mhioc_resv_desc_list32 {
 112         uint32_t                listsize;
 113         uint32_t                listlen;
 114         caddr32_t               list;
 115 } mhioc_resv_desc_list32_t;
 116
 117 typedef struct mhioc_inresvs32 {
 118         uint32_t                generation;
 119         caddr32_t               li;
 120 } mhioc_inresvs32_t;
 121 #endif
 122
 123 typedef struct mhioc_register {
 124     mhioc_resv_key_t    oldkey;
 125     mhioc_resv_key_t    newkey;
 126     boolean_t           aptpl;  /* True if persistent across power failures */
 127 } mhioc_register_t;
 128
 129 typedef struct mhioc_preemptandabort {
 130     mhioc_resv_desc_t   resvdesc;
 131     mhioc_resv_key_t    victim_key;
 132 } mhioc_preemptandabort_t;
 133
 134 typedef struct mhioc_registerandignorekey {
 135     mhioc_resv_key_t    newkey;
 136     boolean_t           aptpl;  /* True if persistent across power failures */
 137 } mhioc_registerandignorekey_t;
 138
 139 /*
 140  * SCSI-3 PGR Reservation Type Codes.  Codes with the _OBSOLETE suffix
 141  * have been removed from the SCSI3 PGR standard.
 142  */
 143 #define SCSI3_RESV_READSHARED_OBSOLETE                  0
 144 #define SCSI3_RESV_WRITEEXCLUSIVE                       1
 145 #define SCSI3_RESV_READEXCLUSIVE_OBSOLETE               2
 146 #define SCSI3_RESV_EXCLUSIVEACCESS                      3
 147 #define SCSI3_RESV_SHAREDACCESS_OBSOLETE                4
 148 #define SCSI3_RESV_WRITEEXCLUSIVEREGISTRANTSONLY        5
 149 #define SCSI3_RESV_EXCLUSIVEACCESSREGISTRANTSONLY       6
 150
 151 #define SCSI3_SCOPE_LOGICALUNIT                         0
 152 #define SCSI3_SCOPE_EXTENT_OBSOLETE                     1
 153 #define SCSI3_SCOPE_ELEMENT                             2
 154
 155 #ifdef __cplusplus
 156 }
 157 #endif
 158
 159 #endif  /* _SYS_MHD_H */