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ata_raidvar.h revision 1.5 
      1 /*	$NetBSD: ata_raidvar.h,v 1.5 2007/03/27 00:10:20 garbled Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2003 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef _DEV_ATA_ATA_RAIDVAR_H_
     39 #define	_DEV_ATA_ATA_RAIDVAR_H_
     40 
     41 #include <sys/queue.h>
     42 
     43 /*
     44  * Types of RAID configurations we support.  Do not change the order
     45  * of this list, as it will change the order in which the arrays are
     46  * sorted.
     47  *
     48  * If this list is updated, ensure the array in
     49  * ata_raid.c:ata_raid_type_name() is also updated.
     50  */
     51 #define	ATA_RAID_TYPE_PROMISE	0
     52 #define	ATA_RAID_TYPE_ADAPTEC	1
     53 #define	ATA_RAID_TYPE_VIA	2
     54 #define	ATA_RAID_TYPE_MAX	2
     55 
     56 /*
     57  * Max # of disks supported by a single array.  This is limited by
     58  * the number that the individual controller config blocks can support:
     59  *
     60  *	Promise		8
     61  */
     62 #define	ATA_RAID_MAX_DISKS	8
     63 
     64 struct ataraid_disk_info {
     65 	struct device *adi_dev;		/* disk's device */
     66 	int	adi_status;		/* disk's status */
     67 	u_int	adi_sectors;
     68 	u_int	adi_compsize;		/* in sectors */
     69 };
     70 
     71 /* adi_status */
     72 #define	ADI_S_ONLINE		0x01
     73 #define	ADI_S_ASSIGNED		0x02
     74 #define	ADI_S_SPARE		0x04
     75 
     76 struct ataraid_array_info {
     77 	TAILQ_ENTRY(ataraid_array_info) aai_list;
     78 
     79 	struct device *aai_ld;		/* associated logical disk */
     80 
     81 	u_int	aai_type;		/* array type */
     82 	u_int	aai_arrayno;		/* array number */
     83 	int	aai_level;		/* RAID level */
     84 	int	aai_generation;		/* config generaion # */
     85 	int	aai_status;		/* array status */
     86 
     87 	/* Geometry info. */
     88 	u_int	aai_interleave;		/* stripe size */
     89 	u_int	aai_width;		/* array width */
     90 	u_int	aai_ndisks;		/* number of disks */
     91 	u_int	aai_heads;		/* tracks/cyl */
     92 	u_int	aai_sectors;		/* secs/track */
     93 	u_int	aai_cylinders;		/* cyl/unit */
     94 	u_int	aai_capacity;		/* in sectors */
     95 	u_int	aai_offset;		/* component start offset */
     96 	u_int	aai_reserved;		/* component reserved sectors */
     97 
     98 	struct ataraid_disk_info aai_disks[ATA_RAID_MAX_DISKS];
     99 };
    100 
    101 /* aai_level */
    102 #define	AAI_L_SPAN		0x01
    103 #define	AAI_L_RAID0		0x02
    104 #define	AAI_L_RAID1		0x04
    105 #define	AAI_L_RAID5		0x08
    106 
    107 /* aai_status */
    108 #define	AAI_S_READY		0x01
    109 #define	AAI_S_DEGRADED		0x02
    110 
    111 struct vnode;
    112 struct wd_softc;
    113 
    114 typedef TAILQ_HEAD(, ataraid_array_info) ataraid_array_info_list_t;
    115 extern ataraid_array_info_list_t ataraid_array_info_list;
    116 
    117 void	ata_raid_check_component(struct device *);
    118 const char *ata_raid_type_name(u_int);
    119 
    120 struct ataraid_array_info *ata_raid_get_array_info(u_int, u_int);
    121 int	ata_raid_config_block_rw(struct vnode *, daddr_t, void *,
    122 	    size_t, int);
    123 
    124 /* Promise RAID support */
    125 int	ata_raid_read_config_promise(struct wd_softc *);
    126 
    127 /* Adaptec HostRAID support */
    128 int	ata_raid_read_config_adaptec(struct wd_softc *);
    129 
    130 /* VIA V-RAID support */
    131 int	ata_raid_read_config_via(struct wd_softc *);
    132 
    133 #endif /* _DEV_ATA_ATA_RAIDVAR_H_ */
    134