1 /* $NetBSD: ata_raid_promise.c,v 1.14 2022/03/19 13:51:01 hannken 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 1.14 2022/03/19 13:51:01 hannken 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/vnode.h> 49 #include <sys/kauth.h> 50 51 #include <miscfs/specfs/specdev.h> 52 53 #include <dev/ata/atareg.h> 54 #include <dev/ata/atavar.h> 55 #include <dev/ata/wdvar.h> 56 57 #include <dev/ata/ata_raidreg.h> 58 #include <dev/ata/ata_raidvar.h> 59 60 #ifdef ATA_RAID_DEBUG 61 #define DPRINTF(x) printf x 62 #else 63 #define DPRINTF(x) /* nothing */ 64 #endif 65 66 int 67 ata_raid_read_config_promise(struct wd_softc *sc) 68 { 69 struct dk_softc *dksc = &sc->sc_dksc; 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 = kmem_zalloc(sizeof(*info), KM_SLEEP); 80 81 bmajor = devsw_name2blk(dksc->sc_xname, NULL, 0); 82 83 /* Get a vnode for the raw partition of this disk. */ 84 dev = MAKEDISKDEV(bmajor, device_unit(dksc->sc_dev), RAW_PART); 85 error = bdevvp(dev, &vp); 86 if (error) 87 goto out; 88 89 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 90 error = VOP_OPEN(vp, FREAD, NOCRED); 91 if (error) { 92 vput(vp); 93 goto out; 94 } 95 96 error = ata_raid_config_block_rw(vp, PR_LBA(sc), info, 97 sizeof(*info), B_READ); 98 VOP_CLOSE(vp, FREAD, NOCRED); 99 vput(vp); 100 if (error) { 101 aprint_error_dev(dksc->sc_dev, 102 "error %d reading Promise config block\n", error); 103 goto out; 104 } 105 106 /* Check the signature. */ 107 if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC)) != 0) { 108 DPRINTF(("%s: Promise signature check failed\n", 109 dksc->sc_xname)); 110 error = ESRCH; 111 goto out; 112 } 113 114 /* Verify the checksum. */ 115 for (cksum = 0, ckptr = (uint32_t *) info, count = 0; count < 511; 116 count++) 117 cksum += *ckptr++; 118 if (cksum != *ckptr) { 119 DPRINTF(("%s: Promise checksum failed\n", 120 dksc->sc_xname)); 121 error = ESRCH; 122 goto out; 123 } 124 125 if (info->raid.integrity != PR_I_VALID) { 126 DPRINTF(("%s: Promise config block marked invalid\n", 127 dksc->sc_xname)); 128 error = ESRCH; 129 goto out; 130 } 131 132 /* 133 * Lookup or allocate a new array info structure for 134 * this array. 135 */ 136 aai = ata_raid_get_array_info(ATA_RAID_TYPE_PROMISE, 137 info->raid.array_number); 138 139 if (info->raid.generation == 0 || 140 info->raid.generation > aai->aai_generation) { 141 aai->aai_generation = info->raid.generation; 142 /* aai_type and aai_arrayno filled in already */ 143 if ((info->raid.status & 144 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) == 145 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) { 146 aai->aai_status |= AAI_S_READY; 147 if (info->raid.status & PR_S_DEGRADED) 148 aai->aai_status |= AAI_S_DEGRADED; 149 } else 150 aai->aai_status &= ~AAI_S_READY; 151 152 switch (info->raid.type) { 153 case PR_T_RAID0: 154 aai->aai_level = AAI_L_RAID0; 155 break; 156 157 case PR_T_RAID1: 158 aai->aai_level = AAI_L_RAID1; 159 if (info->raid.array_width > 1) 160 aai->aai_level |= AAI_L_RAID0; 161 break; 162 163 case PR_T_SPAN: 164 aai->aai_level = AAI_L_SPAN; 165 break; 166 167 default: 168 aprint_error_dev(dksc->sc_dev, 169 "unknown Promise RAID type 0x%02x\n", 170 info->raid.type); 171 error = EINVAL; 172 goto out; 173 } 174 175 aai->aai_interleave = 1U << info->raid.stripe_shift; 176 aai->aai_width = info->raid.array_width; 177 aai->aai_ndisks = info->raid.total_disks; 178 aai->aai_heads = info->raid.heads + 1; 179 aai->aai_sectors = info->raid.sectors; 180 aai->aai_cylinders = info->raid.cylinders + 1; 181 aai->aai_capacity = info->raid.total_sectors; 182 aai->aai_offset = 0; 183 aai->aai_reserved = 63; 184 185 for (disk = 0; disk < aai->aai_ndisks; disk++) { 186 adi = &aai->aai_disks[disk]; 187 adi->adi_status = 0; 188 if (info->raid.disk[disk].flags & PR_F_ONLINE) 189 adi->adi_status |= ADI_S_ONLINE; 190 if (info->raid.disk[disk].flags & PR_F_ASSIGNED) 191 adi->adi_status |= ADI_S_ASSIGNED; 192 if (info->raid.disk[disk].flags & PR_F_SPARE) { 193 adi->adi_status &= ~ADI_S_ONLINE; 194 adi->adi_status |= ADI_S_SPARE; 195 } 196 if (info->raid.disk[disk].flags & 197 (PR_F_REDIR | PR_F_DOWN)) 198 adi->adi_status &= ~ADI_S_ONLINE; 199 } 200 } 201 adi = &aai->aai_disks[info->raid.disk_number]; 202 if (adi->adi_status) { 203 adi->adi_dev = dksc->sc_dev; 204 adi->adi_sectors = info->raid.disk_sectors; 205 adi->adi_compsize = sc->sc_capacity - aai->aai_reserved; 206 } 207 208 error = 0; 209 210 out: 211 kmem_free(info, sizeof(*info)); 212 return (error); 213 } 214
Indexes created Thu Sep 25 16:09:42 GMT 2025