1/* $NetBSD: ata_raid_promise.c,v 1.10 2008/02/02 16:15:02 mjf Exp $ */ 2 3/*- 4 * Copyright (c) 2000,2001,2002 S�ren Schmidt <sos@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31/* 32 * Support for parsing Promise ATA RAID controller configuration blocks. 33 * 34 * Adapted to NetBSD by Jason R. Thorpe of Wasabi Systems, Inc. 35 */ 36 37#include <sys/cdefs.h> 38__KERNEL_RCSID(0, "$NetBSD: ata_raid_promise.c,v 1.10 2008/02/02 16:15:02 mjf Exp $"); 39 40#include <sys/param.h> 41#include <sys/buf.h> 42#include <sys/bufq.h> 43#include <sys/conf.h> 44#include <sys/device.h> 45#include <sys/disk.h> 46#include <sys/disklabel.h> 47#include <sys/fcntl.h> 48#include <sys/malloc.h> 49#include <sys/vnode.h> 50#include <sys/kauth.h> 51 52#include <miscfs/specfs/specdev.h> 53 54#include <dev/ata/atareg.h> 55#include <dev/ata/atavar.h> 56#include <dev/ata/wdvar.h> 57 58#include <dev/ata/ata_raidreg.h> 59#include <dev/ata/ata_raidvar.h> 60 61#ifdef ATA_RAID_DEBUG 62#define DPRINTF(x) printf x 63#else 64#define DPRINTF(x) /* nothing */ 65#endif 66 67int 68ata_raid_read_config_promise(struct wd_softc *sc) 69{ 70 struct promise_raid_conf *info; 71 struct vnode *vp; 72 int bmajor, error, count; 73 u_int disk; 74 dev_t dev; 75 uint32_t cksum, *ckptr; 76 struct ataraid_array_info *aai; 77 struct ataraid_disk_info *adi; 78 79 info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK); 80 81 bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0); 82 83 /* Get a vnode for the raw partition of this disk. */ 84 dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART); 85 error = bdevvp(dev, &vp); 86 if (error) 87 goto out; 88 89 error = VOP_OPEN(vp, FREAD, NOCRED); 90 if (error) { 91 vput(vp); 92 goto out; 93 } 94 95 error = ata_raid_config_block_rw(vp, PR_LBA(sc), info, 96 sizeof(*info), B_READ); 97 VOP_CLOSE(vp, FREAD, NOCRED); 98 vput(vp); 99 if (error) { 100 aprint_error_dev(sc->sc_dev, 101 "error %d reading Promise config block\n", error); 102 goto out; 103 } 104 105 /* Check the signature. */ 106 if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC)) != 0) { 107 DPRINTF(("%s: Promise signature check failed\n", 108 device_xname(sc->sc_dev))); 109 error = ESRCH; 110 goto out; 111 } 112 113 /* Verify the checksum. */ 114 for (cksum = 0, ckptr = (uint32_t *) info, count = 0; count < 511; 115 count++) 116 cksum += *ckptr++; 117 if (cksum != *ckptr) { 118 DPRINTF(("%s: Promise checksum failed\n", 119 device_xname(sc->sc_dev))); 120 error = ESRCH; 121 goto out; 122 } 123 124 if (info->raid.integrity != PR_I_VALID) { 125 DPRINTF(("%s: Promise config block marked invalid\n", 126 device_xname(sc->sc_dev))); 127 error = ESRCH; 128 goto out; 129 } 130 131 /* 132 * Lookup or allocate a new array info structure for 133 * this array. 134 */ 135 aai = ata_raid_get_array_info(ATA_RAID_TYPE_PROMISE, 136 info->raid.array_number); 137 138 if (info->raid.generation == 0 || 139 info->raid.generation > aai->aai_generation) { 140 aai->aai_generation = info->raid.generation; 141 /* aai_type and aai_arrayno filled in already */ 142 if ((info->raid.status & 143 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) == 144 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) { 145 aai->aai_status |= AAI_S_READY; 146 if (info->raid.status & PR_S_DEGRADED) 147 aai->aai_status |= AAI_S_DEGRADED; 148 } else 149 aai->aai_status &= ~AAI_S_READY; 150 151 switch (info->raid.type) { 152 case PR_T_RAID0: 153 aai->aai_level = AAI_L_RAID0; 154 break; 155 156 case PR_T_RAID1: 157 aai->aai_level = AAI_L_RAID1; 158 if (info->raid.array_width > 1) 159 aai->aai_level |= AAI_L_RAID0; 160 break; 161 162 case PR_T_SPAN: 163 aai->aai_level = AAI_L_SPAN; 164 break; 165 166 default: 167 aprint_error_dev(sc->sc_dev, 168 "unknown Promise RAID type 0x%02x\n", 169 info->raid.type); 170 error = EINVAL; 171 goto out; 172 } 173 174 aai->aai_interleave = 1U << info->raid.stripe_shift; 175 aai->aai_width = info->raid.array_width; 176 aai->aai_ndisks = info->raid.total_disks; 177 aai->aai_heads = info->raid.heads + 1; 178 aai->aai_sectors = info->raid.sectors; 179 aai->aai_cylinders = info->raid.cylinders + 1; 180 aai->aai_capacity = info->raid.total_sectors; 181 aai->aai_offset = 0; 182 aai->aai_reserved = 63; 183 184 for (disk = 0; disk < aai->aai_ndisks; disk++) { 185 adi = &aai->aai_disks[disk]; 186 adi->adi_status = 0; 187 if (info->raid.disk[disk].flags & PR_F_ONLINE) 188 adi->adi_status |= ADI_S_ONLINE; 189 if (info->raid.disk[disk].flags & PR_F_ASSIGNED) 190 adi->adi_status |= ADI_S_ASSIGNED; 191 if (info->raid.disk[disk].flags & PR_F_SPARE) { 192 adi->adi_status &= ~ADI_S_ONLINE; 193 adi->adi_status |= ADI_S_SPARE; 194 } 195 if (info->raid.disk[disk].flags & 196 (PR_F_REDIR | PR_F_DOWN)) 197 adi->adi_status &= ~ADI_S_ONLINE; 198 } 199 } 200 adi = &aai->aai_disks[info->raid.disk_number]; 201 if (adi->adi_status) { 202 adi->adi_dev = sc->sc_dev; 203 adi->adi_sectors = info->raid.disk_sectors; 204 adi->adi_compsize = sc->sc_capacity - aai->aai_reserved; 205 } 206 207 error = 0; 208 209 out: 210 free(info, M_DEVBUF); 211 return (error); 212} 213