1 /* $NetBSD: ata_raid_promise.c,v 1.1 2003/01/27 18:21:27 thorpej 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/param.h> 38 #include <sys/buf.h> 39 #include <sys/conf.h> 40 #include <sys/device.h> 41 #include <sys/disk.h> 42 #include <sys/disklabel.h> 43 #include <sys/fcntl.h> 44 #include <sys/malloc.h> 45 #include <sys/vnode.h> 46 47 #include <miscfs/specfs/specdev.h> 48 49 #define __ATA_DISK_PRIVATE 50 51 #include <dev/ata/atareg.h> 52 #include <dev/ata/atavar.h> 53 #include <dev/ata/wdvar.h> 54 55 #include <dev/ata/ata_raidreg.h> 56 #include <dev/ata/ata_raidvar.h> 57 58 #ifdef ATA_RAID_DEBUG 59 #define DPRINTF(x) printf x 60 #else 61 #define DPRINTF(x) /* nothing */ 62 #endif 63 64 int 65 ata_raid_read_config_promise(struct wd_softc *sc) 66 { 67 struct promise_raid_conf *info; 68 struct vnode *vp; 69 int bmajor, error, count; 70 u_int disk; 71 dev_t dev; 72 uint32_t cksum, *ckptr; 73 struct ataraid_array_info *aai; 74 struct ataraid_disk_info *adi; 75 76 info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK); 77 78 bmajor = devsw_name2blk(sc->sc_dev.dv_xname, NULL, 0); 79 80 /* Get a vnode for the raw partition of this disk. */ 81 dev = MAKEDISKDEV(bmajor, sc->sc_dev.dv_unit, RAW_PART); 82 error = bdevvp(dev, &vp); 83 if (error) 84 goto out; 85 86 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 87 if (error) { 88 vput(vp); 89 goto out; 90 } 91 92 error = ata_raid_config_block_rw(vp, PR_LBA(sc), info, 93 sizeof(*info), B_READ); 94 vput(vp); 95 if (error) { 96 printf("%s: error %d reading Promise config block\n", 97 sc->sc_dev.dv_xname, error); 98 goto out; 99 } 100 101 /* Check the signature. */ 102 if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC)) != 0) { 103 DPRINTF(("%s: Promise signature check failed\n", 104 sc->sc_dev.dv_xname)); 105 error = ESRCH; 106 goto out; 107 } 108 109 /* Verify the checksum. */ 110 for (cksum = 0, ckptr = (uint32_t *) info, count = 0; count < 511; 111 count++) 112 cksum += *ckptr++; 113 if (cksum != *ckptr) { 114 DPRINTF(("%s: Promise checksum failed\n", sc->sc_dev.dv_xname)); 115 error = ESRCH; 116 goto out; 117 } 118 119 if (info->raid.integrity != PR_I_VALID) { 120 DPRINTF(("%s: Promise config block marked invalid\n", 121 sc->sc_dev.dv_xname)); 122 error = ESRCH; 123 goto out; 124 } 125 126 /* 127 * Lookup or allocate a new array info structure for 128 * this array. 129 */ 130 aai = ata_raid_get_array_info(ATA_RAID_TYPE_PROMISE, 131 info->raid.array_number); 132 133 if (info->raid.generation == 0 || 134 info->raid.generation > aai->aai_generation) { 135 aai->aai_generation = info->raid.generation; 136 /* aai_type and aai_arrayno filled in already */ 137 if ((info->raid.status & 138 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) == 139 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) { 140 aai->aai_status |= AAI_S_READY; 141 if (info->raid.status & PR_S_DEGRADED) 142 aai->aai_status |= AAI_S_DEGRADED; 143 } else 144 aai->aai_status &= ~AAI_S_READY; 145 146 switch (info->raid.type) { 147 case PR_T_RAID0: 148 aai->aai_level = AAI_L_RAID0; 149 break; 150 151 case PR_T_RAID1: 152 aai->aai_level = AAI_L_RAID1; 153 if (info->raid.array_width > 1) 154 aai->aai_level |= AAI_L_RAID0; 155 break; 156 157 case PR_T_SPAN: 158 aai->aai_level = AAI_L_SPAN; 159 break; 160 161 default: 162 printf("%s: unknown Promise RAID type 0x%02x\n", 163 sc->sc_dev.dv_xname, info->raid.type); 164 error = EINVAL; 165 goto out; 166 } 167 168 aai->aai_interleave = 1U << info->raid.stripe_shift; 169 aai->aai_width = info->raid.array_width; 170 aai->aai_ndisks = info->raid.total_disks; 171 aai->aai_heads = info->raid.heads + 1; 172 aai->aai_sectors = info->raid.sectors; 173 aai->aai_cylinders = info->raid.cylinders + 1; 174 aai->aai_capacity = info->raid.total_sectors; 175 aai->aai_offset = 0; 176 aai->aai_reserved = 63; 177 178 for (disk = 0; disk < aai->aai_ndisks; disk++) { 179 adi = &aai->aai_disks[disk]; 180 adi->adi_status = 0; 181 if (info->raid.disk[disk].flags & PR_F_ONLINE) 182 adi->adi_status |= ADI_S_ONLINE; 183 if (info->raid.disk[disk].flags & PR_F_ASSIGNED) 184 adi->adi_status |= ADI_S_ASSIGNED; 185 if (info->raid.disk[disk].flags & PR_F_SPARE) { 186 adi->adi_status &= ~ADI_S_ONLINE; 187 adi->adi_status |= ADI_S_SPARE; 188 } 189 if (info->raid.disk[disk].flags & 190 (PR_F_REDIR | PR_F_DOWN)) 191 adi->adi_status &= ~ADI_S_ONLINE; 192 } 193 } 194 adi = &aai->aai_disks[info->raid.disk_number]; 195 if (adi->adi_status) { 196 adi->adi_dev = &sc->sc_dev; 197 adi->adi_sectors = info->raid.disk_sectors; 198 adi->adi_compsize = sc->sc_capacity - aai->aai_reserved; 199 } 200 201 error = 0; 202 203 out: 204 free(info, M_DEVBUF); 205 return (error); 206 } 207