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ata_raidvar.h revision 1.7 
      1 /*	$NetBSD: ata_raidvar.h,v 1.7 2008/09/05 12:37:13 tron 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_NVIDIA	3
     55 #define ATA_RAID_TYPE_JMICRON	4
     56 #define	ATA_RAID_TYPE_MAX	4
     57 
     58 /*
     59  * Max # of disks supported by a single array.  This is limited by
     60  * the number that the individual controller config blocks can support:
     61  *
     62  *	Promise		8
     63  */
     64 #define	ATA_RAID_MAX_DISKS	8
     65 
     66 struct ataraid_disk_info {
     67 	struct device *adi_dev;		/* disk's device */
     68 	int	adi_status;		/* disk's status */
     69 	u_int	adi_sectors;
     70 	u_int	adi_compsize;		/* in sectors */
     71 };
     72 
     73 /* adi_status */
     74 #define	ADI_S_ONLINE		0x01
     75 #define	ADI_S_ASSIGNED		0x02
     76 #define	ADI_S_SPARE		0x04
     77 
     78 struct ataraid_array_info {
     79 	TAILQ_ENTRY(ataraid_array_info) aai_list;
     80 
     81 	struct device *aai_ld;		/* associated logical disk */
     82 
     83 	u_int	aai_type;		/* array type */
     84 	u_int	aai_arrayno;		/* array number */
     85 	int	aai_level;		/* RAID level */
     86 	int	aai_generation;		/* config generation # */
     87 	int	aai_status;		/* array status */
     88 
     89 	/* Geometry info. */
     90 	u_int	aai_interleave;		/* stripe size */
     91 	u_int	aai_width;		/* array width */
     92 	u_int	aai_ndisks;		/* number of disks */
     93 	u_int	aai_heads;		/* tracks/cyl */
     94 	u_int	aai_sectors;		/* secs/track */
     95 	u_int	aai_cylinders;		/* cyl/unit */
     96 	u_int	aai_capacity;		/* in sectors */
     97 	u_int	aai_offset;		/* component start offset */
     98 	u_int	aai_reserved;		/* component reserved sectors */
     99 
    100 	struct ataraid_disk_info aai_disks[ATA_RAID_MAX_DISKS];
    101 };
    102 
    103 /* aai_level */
    104 #define	AAI_L_SPAN		0x01
    105 #define	AAI_L_RAID0		0x02
    106 #define	AAI_L_RAID1		0x04
    107 #define	AAI_L_RAID5		0x08
    108 
    109 /* aai_status */
    110 #define	AAI_S_READY		0x01
    111 #define	AAI_S_DEGRADED		0x02
    112 
    113 struct vnode;
    114 struct wd_softc;
    115 
    116 typedef TAILQ_HEAD(, ataraid_array_info) ataraid_array_info_list_t;
    117 extern ataraid_array_info_list_t ataraid_array_info_list;
    118 
    119 void	ata_raid_check_component(struct device *);
    120 const char *ata_raid_type_name(u_int);
    121 
    122 struct ataraid_array_info *ata_raid_get_array_info(u_int, u_int);
    123 int	ata_raid_config_block_rw(struct vnode *, daddr_t, void *,
    124 	    size_t, int);
    125 
    126 /* Promise RAID support */
    127 int	ata_raid_read_config_promise(struct wd_softc *);
    128 
    129 /* Adaptec HostRAID support */
    130 int	ata_raid_read_config_adaptec(struct wd_softc *);
    131 
    132 /* VIA V-RAID support */
    133 int	ata_raid_read_config_via(struct wd_softc *);
    134 
    135 /* nVidia MediaShield support */
    136 int	ata_raid_read_config_nvidia(struct wd_softc *);
    137 
    138 /* JMicron RAID support */
    139 int	ata_raid_read_config_jmicron(struct wd_softc *);
    140 
    141 #endif /* _DEV_ATA_ATA_RAIDVAR_H_ */
    142