ata_raid_promise.c revision 1.2
1 /* $NetBSD: ata_raid_promise.c,v 1.2 2003/07/14 15:47:02 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 2000,2001,2002 Sren Schmidt <sos (at) 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 1.2 2003/07/14 15:47:02 lukem Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/buf.h> 42 #include <sys/conf.h> 43 #include <sys/device.h> 44 #include <sys/disk.h> 45 #include <sys/disklabel.h> 46 #include <sys/fcntl.h> 47 #include <sys/malloc.h> 48 #include <sys/vnode.h> 49 50 #include <miscfs/specfs/specdev.h> 51 52 #define __ATA_DISK_PRIVATE 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 67 int 68 ata_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(sc->sc_dev.dv_xname, NULL, 0); 82 83 /* Get a vnode for the raw partition of this disk. */ 84 dev = MAKEDISKDEV(bmajor, sc->sc_dev.dv_unit, RAW_PART); 85 error = bdevvp(dev, &vp); 86 if (error) 87 goto out; 88 89 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 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 vput(vp); 98 if (error) { 99 printf("%s: error %d reading Promise config block\n", 100 sc->sc_dev.dv_xname, error); 101 goto out; 102 } 103 104 /* Check the signature. */ 105 if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC)) != 0) { 106 DPRINTF(("%s: Promise signature check failed\n", 107 sc->sc_dev.dv_xname)); 108 error = ESRCH; 109 goto out; 110 } 111 112 /* Verify the checksum. */ 113 for (cksum = 0, ckptr = (uint32_t *) info, count = 0; count < 511; 114 count++) 115 cksum += *ckptr++; 116 if (cksum != *ckptr) { 117 DPRINTF(("%s: Promise checksum failed\n", sc->sc_dev.dv_xname)); 118 error = ESRCH; 119 goto out; 120 } 121 122 if (info->raid.integrity != PR_I_VALID) { 123 DPRINTF(("%s: Promise config block marked invalid\n", 124 sc->sc_dev.dv_xname)); 125 error = ESRCH; 126 goto out; 127 } 128 129 /* 130 * Lookup or allocate a new array info structure for 131 * this array. 132 */ 133 aai = ata_raid_get_array_info(ATA_RAID_TYPE_PROMISE, 134 info->raid.array_number); 135 136 if (info->raid.generation == 0 || 137 info->raid.generation > aai->aai_generation) { 138 aai->aai_generation = info->raid.generation; 139 /* aai_type and aai_arrayno filled in already */ 140 if ((info->raid.status & 141 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) == 142 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) { 143 aai->aai_status |= AAI_S_READY; 144 if (info->raid.status & PR_S_DEGRADED) 145 aai->aai_status |= AAI_S_DEGRADED; 146 } else 147 aai->aai_status &= ~AAI_S_READY; 148 149 switch (info->raid.type) { 150 case PR_T_RAID0: 151 aai->aai_level = AAI_L_RAID0; 152 break; 153 154 case PR_T_RAID1: 155 aai->aai_level = AAI_L_RAID1; 156 if (info->raid.array_width > 1) 157 aai->aai_level |= AAI_L_RAID0; 158 break; 159 160 case PR_T_SPAN: 161 aai->aai_level = AAI_L_SPAN; 162 break; 163 164 default: 165 printf("%s: unknown Promise RAID type 0x%02x\n", 166 sc->sc_dev.dv_xname, info->raid.type); 167 error = EINVAL; 168 goto out; 169 } 170 171 aai->aai_interleave = 1U << info->raid.stripe_shift; 172 aai->aai_width = info->raid.array_width; 173 aai->aai_ndisks = info->raid.total_disks; 174 aai->aai_heads = info->raid.heads + 1; 175 aai->aai_sectors = info->raid.sectors; 176 aai->aai_cylinders = info->raid.cylinders + 1; 177 aai->aai_capacity = info->raid.total_sectors; 178 aai->aai_offset = 0; 179 aai->aai_reserved = 63; 180 181 for (disk = 0; disk < aai->aai_ndisks; disk++) { 182 adi = &aai->aai_disks[disk]; 183 adi->adi_status = 0; 184 if (info->raid.disk[disk].flags & PR_F_ONLINE) 185 adi->adi_status |= ADI_S_ONLINE; 186 if (info->raid.disk[disk].flags & PR_F_ASSIGNED) 187 adi->adi_status |= ADI_S_ASSIGNED; 188 if (info->raid.disk[disk].flags & PR_F_SPARE) { 189 adi->adi_status &= ~ADI_S_ONLINE; 190 adi->adi_status |= ADI_S_SPARE; 191 } 192 if (info->raid.disk[disk].flags & 193 (PR_F_REDIR | PR_F_DOWN)) 194 adi->adi_status &= ~ADI_S_ONLINE; 195 } 196 } 197 adi = &aai->aai_disks[info->raid.disk_number]; 198 if (adi->adi_status) { 199 adi->adi_dev = &sc->sc_dev; 200 adi->adi_sectors = info->raid.disk_sectors; 201 adi->adi_compsize = sc->sc_capacity - aai->aai_reserved; 202 } 203 204 error = 0; 205 206 out: 207 free(info, M_DEVBUF); 208 return (error); 209 } 210
Indexes created Fri Sep 26 08:10:20 GMT 2025