FreeBSD/Linux Kernel Cross Reference
sys/dev/ata/ata_raidvar.h

     /*      $NetBSD: ata_raidvar.h,v 1.1 2003/01/27 18:21:28 thorpej Exp $  */
     
     /*
      * Copyright (c) 2003 Wasabi Systems, Inc.
      * All rights reserved.
      *
      * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      *
      * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed for the NetBSD Project by
     *      Wasabi Systems, Inc.
     * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     *    or promote products derived from this software without specific prior
     *    written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    #ifndef _DEV_ATA_ATA_RAIDVAR_H_
    #define _DEV_ATA_ATA_RAIDVAR_H_
    
    #include <sys/queue.h>
    
    /*
     * Types of RAID configurations we support.  Do not change the order
     * of this list, as it will change the order in which the arrays are
     * sorted.
     */
    #define ATA_RAID_TYPE_PROMISE   0
    #define ATA_RAID_TYPE_MAX       0
    
    /*
     * Max # of disks supported by a single array.  This is limited by
     * the number that the individual controller config blocks can support:
     *
     *      Promise         8
     */
    #define ATA_RAID_MAX_DISKS      8
    
    struct ataraid_disk_info {
            struct device *adi_dev;         /* disk's device */
            int     adi_status;             /* disk's status */
            u_int   adi_sectors;
            u_int   adi_compsize;           /* in sectors */
    };
    
    /* adi_status */
    #define ADI_S_ONLINE            0x01
    #define ADI_S_ASSIGNED          0x02
    #define ADI_S_SPARE             0x04
    
    struct ataraid_array_info {
            TAILQ_ENTRY(ataraid_array_info) aai_list;
    
            struct device *aai_ld;          /* associated logical disk */
    
            u_int   aai_type;               /* array type */
            u_int   aai_arrayno;            /* array number */
            int     aai_level;              /* RAID level */
            int     aai_generation;         /* config generaion # */
            int     aai_status;             /* array status */
    
            /* Geometry info. */
            u_int   aai_interleave;         /* stripe size */
            u_int   aai_width;              /* array width */
            u_int   aai_ndisks;             /* number of disks */
            u_int   aai_heads;              /* tracks/cyl */
            u_int   aai_sectors;            /* secs/track */
            u_int   aai_cylinders;          /* cyl/unit */
            u_int   aai_capacity;           /* in sectors */
            u_int   aai_offset;             /* component start offset */
            u_int   aai_reserved;           /* component reserved sectors */
    
            struct ataraid_disk_info aai_disks[ATA_RAID_MAX_DISKS];
    };
    
    /* aai_level */
    #define AAI_L_SPAN              0x01
    #define AAI_L_RAID0             0x02
    #define AAI_L_RAID1             0x04
   
   /* aai_status */
   #define AAI_S_READY             0x01
   #define AAI_S_DEGRADED          0x02
   
   struct vnode;
   struct wd_softc;
   
   typedef TAILQ_HEAD(, ataraid_array_info) ataraid_array_info_list_t;
   extern ataraid_array_info_list_t ataraid_array_info_list;
   
   void    ata_raid_check_component(struct device *);
   const char *ata_raid_type_name(u_int);
   
   struct ataraid_array_info *ata_raid_get_array_info(u_int, u_int);
   int     ata_raid_config_block_rw(struct vnode *, daddr_t, void *,
               size_t, int);
   
   /* Promise RAID support */
   int     ata_raid_read_config_promise(struct wd_softc *);
   
   #endif /* _DEV_ATA_ATA_RAIDVAR_H_ */

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