FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/lib/libspl/include/sys/mhd.h

     /*
      * CDDL HEADER START
      *
      * The contents of this file are subject to the terms of the
      * Common Development and Distribution License, Version 1.0 only
      * (the "License").  You may not use this file except in compliance
      * with the License.
      *
      * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     * or https://opensource.org/licenses/CDDL-1.0.
     * See the License for the specific language governing permissions
     * and limitations under the License.
     *
     * When distributing Covered Code, include this CDDL HEADER in each
     * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     * If applicable, add the following below this CDDL HEADER, with the
     * fields enclosed by brackets "[]" replaced with your own identifying
     * information: Portions Copyright [yyyy] [name of copyright owner]
     *
     * CDDL HEADER END
     */
    /*
     * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     * Use is subject to license terms.
     */
    
    #ifndef _SYS_MHD_H
    #define _SYS_MHD_H
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    /*
     * Definitions for multi-host device I/O control commands
     */
    #define MHIOC                           ('M'<<8)
    #define MHIOCENFAILFAST                 (MHIOC|1)
    #define MHIOCTKOWN                      (MHIOC|2)
    #define MHIOCRELEASE                    (MHIOC|3)
    #define MHIOCSTATUS                     (MHIOC|4)
    #define MHIOCGRP_INKEYS                 (MHIOC|5)
    #define MHIOCGRP_INRESV                 (MHIOC|6)
    #define MHIOCGRP_REGISTER               (MHIOC|7)
    #define MHIOCGRP_RESERVE                (MHIOC|8)
    #define MHIOCGRP_PREEMPTANDABORT        (MHIOC|9)
    #define MHIOCGRP_PREEMPT                (MHIOC|10)
    #define MHIOCGRP_CLEAR                  (MHIOC|11)
    #define MHIOCGRP_REGISTERANDIGNOREKEY   (MHIOC|14)
    #define MHIOCQRESERVE                   (MHIOC|12)
    #define MHIOCREREGISTERDEVID            (MHIOC|13)
    
    /*
     * Following is the structure to specify the delay parameters in
     * milliseconds, via the MHIOCTKOWN ioctl.
     */
    struct mhioctkown {
            int reinstate_resv_delay;
            int min_ownership_delay;
            int max_ownership_delay;
    };
    
    #define MHIOC_RESV_KEY_SIZE     8
    typedef struct mhioc_resv_key {
            uchar_t key[MHIOC_RESV_KEY_SIZE];
    } mhioc_resv_key_t;
    
    typedef struct mhioc_key_list {
            uint32_t                listsize;
            uint32_t                listlen;
            mhioc_resv_key_t        *list;
    } mhioc_key_list_t;
    
    typedef struct mhioc_inkeys {
            uint32_t                generation;
            mhioc_key_list_t        *li;
    } mhioc_inkeys_t;
    
    #if defined(_SYSCALL32)
    struct mhioc_key_list32 {
            uint32_t                listsize;
            uint32_t                listlen;
            caddr32_t               list;
    } mhioc_key_list32_t;
    
    struct mhioc_inkeys32 {
            uint32_t                generation;
            caddr32_t               li;
    } mhioc_inkeys32_t;
    #endif
    
    typedef struct mhioc_resv_desc {
            mhioc_resv_key_t        key;
            uint8_t                 type;
            uint8_t                 scope;
            uint32_t                scope_specific_addr;
    } mhioc_resv_desc_t;
    
    typedef struct mhioc_resv_desc_list {
           uint32_t                listsize;
           uint32_t                listlen;
           mhioc_resv_desc_t       *list;
   } mhioc_resv_desc_list_t;
   
   typedef struct mhioc_inresvs {
           uint32_t                generation;
           mhioc_resv_desc_list_t  *li;
   } mhioc_inresvs_t;
   
   #if defined(_SYSCALL32)
   struct mhioc_resv_desc_list32 {
           uint32_t                listsize;
           uint32_t                listlen;
           caddr32_t               list;
   } mhioc_resv_desc_list32_t;
   
   typedef struct mhioc_inresvs32 {
           uint32_t                generation;
           caddr32_t               li;
   } mhioc_inresvs32_t;
   #endif
   
   typedef struct mhioc_register {
       mhioc_resv_key_t    oldkey;
       mhioc_resv_key_t    newkey;
       boolean_t           aptpl;  /* True if persistent across power failures */
   } mhioc_register_t;
   
   typedef struct mhioc_preemptandabort {
       mhioc_resv_desc_t   resvdesc;
       mhioc_resv_key_t    victim_key;
   } mhioc_preemptandabort_t;
   
   typedef struct mhioc_registerandignorekey {
       mhioc_resv_key_t    newkey;
       boolean_t           aptpl;  /* True if persistent across power failures */
   } mhioc_registerandignorekey_t;
   
   /*
    * SCSI-3 PGR Reservation Type Codes.  Codes with the _OBSOLETE suffix
    * have been removed from the SCSI3 PGR standard.
    */
   #define SCSI3_RESV_READSHARED_OBSOLETE                  0
   #define SCSI3_RESV_WRITEEXCLUSIVE                       1
   #define SCSI3_RESV_READEXCLUSIVE_OBSOLETE               2
   #define SCSI3_RESV_EXCLUSIVEACCESS                      3
   #define SCSI3_RESV_SHAREDACCESS_OBSOLETE                4
   #define SCSI3_RESV_WRITEEXCLUSIVEREGISTRANTSONLY        5
   #define SCSI3_RESV_EXCLUSIVEACCESSREGISTRANTSONLY       6
   
   #define SCSI3_SCOPE_LOGICALUNIT                         0
   #define SCSI3_SCOPE_EXTENT_OBSOLETE                     1
   #define SCSI3_SCOPE_ELEMENT                             2
   
   #ifdef __cplusplus
   }
   #endif
   
   #endif  /* _SYS_MHD_H */

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