1 /* $NetBSD: ata_raid_adaptec.c,v 1.13 2023/08/01 07:58:41 mrg 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 Adaptec ATA RAID controller configuration blocks. 33 * 34 * Adapted to NetBSD by Allen K. Briggs 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: ata_raid_adaptec.c,v 1.13 2023/08/01 07:58:41 mrg 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_adaptec(struct wd_softc *sc) 68 { 69 struct dk_softc *dksc = &sc->sc_dksc; 70 struct adaptec_raid_conf *info; 71 struct atabus_softc *atabus; 72 struct vnode *vp; 73 int bmajor, error; 74 dev_t dev; 75 uint32_t gen, drive; 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, ADP_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 Adaptec config block\n", error); 103 goto out; 104 } 105 106 info->magic_0 = be32toh(info->magic_0); 107 info->magic_1 = be32toh(info->magic_1); 108 info->magic_2 = be32toh(info->magic_2); 109 info->magic_3 = be32toh(info->magic_3); 110 info->magic_4 = be32toh(info->magic_4); 111 /* Check the signature. */ 112 if (info->magic_0 != ADP_MAGIC_0 || info->magic_3 != ADP_MAGIC_3) { 113 DPRINTF(("%s: Adaptec signature check failed\n", 114 dksc->sc_xname)); 115 error = ESRCH; 116 goto out; 117 } 118 119 /* 120 * Lookup or allocate a new array info structure for 121 * this array. 122 */ 123 aai = ata_raid_get_array_info(ATA_RAID_TYPE_ADAPTEC, 124 be32toh(info->configs[0].disk_number)); 125 126 gen = be32toh(info->generation); 127 128 if (gen == 0 || gen > aai->aai_generation) { 129 aai->aai_generation = gen; 130 131 aai->aai_status = AAI_S_READY; 132 133 switch (info->configs[0].type) { 134 case ADP_T_RAID0: 135 aai->aai_level = AAI_L_RAID0; 136 aai->aai_interleave = 137 (be16toh(info->configs[0].stripe_sectors) >> 1); 138 aai->aai_width = be16toh(info->configs[0].total_disks); 139 break; 140 141 case ADP_T_RAID1: 142 aai->aai_level = AAI_L_RAID1; 143 aai->aai_interleave = 0; 144 aai->aai_width = be16toh(info->configs[0].total_disks) 145 / 2; 146 break; 147 148 default: 149 aprint_error_dev(dksc->sc_dev, 150 "unknown Adaptec RAID type 0x%02x\n", 151 info->configs[0].type); 152 error = EINVAL; 153 goto out; 154 } 155 156 aai->aai_type = ATA_RAID_TYPE_ADAPTEC; 157 aai->aai_ndisks = be16toh(info->configs[0].total_disks); 158 aai->aai_capacity = be32toh(info->configs[0].sectors); 159 aai->aai_heads = 255; 160 aai->aai_sectors = 63; 161 aai->aai_cylinders = aai->aai_capacity / (63 * 255); 162 aai->aai_offset = 0; 163 aai->aai_reserved = 17; 164 strlcpy(aai->aai_name, info->configs[0].name, 165 sizeof(aai->aai_name)); 166 167 /* XXX - bogus. RAID1 shouldn't really have an interleave */ 168 if (aai->aai_interleave == 0) 169 aai->aai_interleave = aai->aai_capacity; 170 } 171 172 atabus = device_private(device_parent(dksc->sc_dev)); 173 drive = atabus->sc_chan->ch_channel; 174 if (drive >= aai->aai_ndisks) { 175 aprint_error_dev(dksc->sc_dev, 176 "drive number %d doesn't make sense within %d-disk " 177 "array\n", drive, aai->aai_ndisks); 178 error = EINVAL; 179 goto out; 180 } 181 182 adi = &aai->aai_disks[drive]; 183 adi->adi_dev = dksc->sc_dev; 184 adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED; 185 adi->adi_sectors = aai->aai_capacity; 186 adi->adi_compsize = be32toh(info->configs[drive+1].sectors); 187 188 error = 0; 189 190 out: 191 kmem_free(info, sizeof(*info)); 192 return (error); 193 } 194