wd.c revision 1.4
1 /* $NetBSD: wd.c,v 1.4 2019/01/08 19:41:09 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Manuel Bouyer. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/types.h> 34 #include <sys/stdint.h> 35 36 #include <lib/libsa/stand.h> 37 #include <lib/libkern/libkern.h> 38 39 #include <dev/raidframe/raidframevar.h> /* For RF_PROTECTED_SECTORS */ 40 41 #include "boot.h" 42 #include "wdvar.h" 43 44 #ifdef DEBUG 45 #define DPRINTF(x) printf x 46 #else 47 #define DPRINTF(x) 48 #endif 49 50 static int wd_get_params(struct wd_softc *wd); 51 static int wdgetdisklabel(struct wd_softc *wd); 52 static void wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp); 53 54 int wdopen(struct open_file *, ...); 55 int wdclose(struct open_file *); 56 int wdstrategy(void *, int, daddr_t, size_t, void *, size_t *); 57 58 /* 59 * Get drive parameters through 'device identify' command. 60 */ 61 int 62 wd_get_params(struct wd_softc *wd) 63 { 64 int error; 65 uint8_t buf[DEV_BSIZE]; 66 67 if ((error = wdc_exec_identify(wd, buf)) != 0) 68 return error; 69 70 wd->sc_params = *(struct ataparams *)buf; 71 72 /* 48-bit LBA addressing */ 73 if ((wd->sc_params.atap_cmd2_en & ATA_CMD2_LBA48) != 0) 74 wd->sc_flags |= WDF_LBA48; 75 76 /* Prior to ATA-4, LBA was optional. */ 77 if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) 78 wd->sc_flags |= WDF_LBA; 79 80 if ((wd->sc_flags & WDF_LBA48) != 0) { 81 DPRINTF(("Drive supports LBA48.\n")); 82 wd->sc_capacity = 83 ((uint64_t)wd->sc_params.atap_max_lba[3] << 48) | 84 ((uint64_t)wd->sc_params.atap_max_lba[2] << 32) | 85 ((uint64_t)wd->sc_params.atap_max_lba[1] << 16) | 86 ((uint64_t)wd->sc_params.atap_max_lba[0] << 0); 87 DPRINTF(("atap_max_lba = (0x%x, 0x%x, 0x%x, 0x%x)\n", 88 wd->sc_params.atap_max_lba[3], 89 wd->sc_params.atap_max_lba[2], 90 wd->sc_params.atap_max_lba[1], 91 wd->sc_params.atap_max_lba[0])); 92 wd->sc_capacity28 = 93 ((uint32_t)wd->sc_params.atap_capacity[1] << 16) | 94 ((uint32_t)wd->sc_params.atap_capacity[0] << 0); 95 DPRINTF(("atap_capacity = (0x%x, 0x%x)\n", 96 wd->sc_params.atap_capacity[1], 97 wd->sc_params.atap_capacity[0])); 98 } else if ((wd->sc_flags & WDF_LBA) != 0) { 99 DPRINTF(("Drive supports LBA.\n")); 100 wd->sc_capacity = 101 ((uint32_t)wd->sc_params.atap_capacity[1] << 16) | 102 ((uint32_t)wd->sc_params.atap_capacity[0] << 0); 103 wd->sc_capacity28 = 104 ((uint32_t)wd->sc_params.atap_capacity[1] << 16) | 105 ((uint32_t)wd->sc_params.atap_capacity[0] << 0); 106 } else { 107 DPRINTF(("Drive doesn't support LBA; using CHS.\n")); 108 wd->sc_capacity = wd->sc_capacity28 = 109 wd->sc_params.atap_cylinders * 110 wd->sc_params.atap_heads * 111 wd->sc_params.atap_sectors; 112 } 113 DPRINTF(("wd->sc_capacity = %" PRId64 ", wd->sc_capacity28 = %d.\n", 114 wd->sc_capacity, wd->sc_capacity28)); 115 116 return 0; 117 } 118 119 /* 120 * Initialize disk label to the default value. 121 */ 122 void 123 wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) 124 { 125 126 memset(lp, 0, sizeof(struct disklabel)); 127 128 lp->d_secsize = DEV_BSIZE; 129 lp->d_ntracks = wd->sc_params.atap_heads; 130 lp->d_nsectors = wd->sc_params.atap_sectors; 131 lp->d_ncylinders = wd->sc_params.atap_cylinders; 132 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 133 134 if (strcmp((const char *)wd->sc_params.atap_model, "ST506") == 0) 135 lp->d_type = DKTYPE_ST506; 136 else 137 lp->d_type = DKTYPE_ESDI; 138 139 strncpy(lp->d_typename, (const char *)wd->sc_params.atap_model, 16); 140 strncpy(lp->d_packname, "fictitious", 16); 141 if (wd->sc_capacity > UINT32_MAX) 142 lp->d_secperunit = UINT32_MAX; 143 else 144 lp->d_secperunit = wd->sc_capacity; 145 lp->d_rpm = 3600; 146 lp->d_interleave = 1; 147 lp->d_flags = 0; 148 149 lp->d_partitions[RAW_PART].p_offset = 0; 150 lp->d_partitions[RAW_PART].p_size = 151 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 152 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 153 lp->d_npartitions = MAXPARTITIONS; /* RAW_PART + 1 ??? */ 154 155 lp->d_magic = DISKMAGIC; 156 lp->d_magic2 = DISKMAGIC; 157 lp->d_checksum = dkcksum(lp); 158 } 159 160 /* 161 * Read disk label from the device. 162 */ 163 int 164 wdgetdisklabel(struct wd_softc *wd) 165 { 166 struct mbr_sector *mbr; 167 struct mbr_partition *mp; 168 struct disklabel *lp; 169 size_t rsize; 170 int sector, i; 171 char *msg; 172 uint8_t buf[DEV_BSIZE]; 173 174 wdgetdefaultlabel(wd, &wd->sc_label); 175 176 /* 177 * Find NetBSD Partition in DOS partition table. 178 */ 179 sector = 0; 180 if (wdstrategy(wd, F_READ, MBR_BBSECTOR, DEV_BSIZE, buf, &rsize)) 181 return EOFFSET; 182 183 mbr = (struct mbr_sector *)buf; 184 if (mbr->mbr_magic == htole16(MBR_MAGIC)) { 185 /* 186 * Lookup NetBSD slice. If there is none, go ahead 187 * and try to read the disklabel off sector #0. 188 */ 189 mp = mbr->mbr_parts; 190 for (i = 0; i < MBR_PART_COUNT; i++) { 191 if (mp[i].mbrp_type == MBR_PTYPE_NETBSD) { 192 sector = le32toh(mp[i].mbrp_start); 193 break; 194 } 195 } 196 } 197 198 if (wdstrategy(wd, F_READ, sector + LABELSECTOR, DEV_BSIZE, 199 buf, &rsize)) 200 return EOFFSET; 201 202 msg = getdisklabel((const char *)buf + LABELOFFSET, &wd->sc_label); 203 if (msg) 204 printf("ide/0/%s/0: getdisklabel: %s\n", 205 (wd->sc_unit == 0) ? "master" : "slave", msg); 206 207 lp = &wd->sc_label; 208 209 /* check partition */ 210 if ((wd->sc_part >= lp->d_npartitions) || 211 (lp->d_partitions[wd->sc_part].p_fstype == FS_UNUSED)) { 212 DPRINTF(("illegal partition\n")); 213 return EPART; 214 } 215 216 DPRINTF(("label info: d_secsize %d, d_nsectors %d, d_ncylinders %d," 217 " d_ntracks %d, d_secpercyl %d\n", 218 wd->sc_label.d_secsize, 219 wd->sc_label.d_nsectors, 220 wd->sc_label.d_ncylinders, 221 wd->sc_label.d_ntracks, 222 wd->sc_label.d_secpercyl)); 223 224 return 0; 225 } 226 227 /* 228 * Open device (read drive parameters and disklabel) 229 */ 230 int 231 wdopen(struct open_file *f, ...) 232 { 233 int error; 234 va_list ap; 235 u_int ctlr, unit, lunit, part; 236 struct wd_softc *wd; 237 238 va_start(ap, f); 239 ctlr = va_arg(ap, u_int); 240 unit = va_arg(ap, u_int); 241 lunit = va_arg(ap, u_int); 242 part = va_arg(ap, u_int); 243 va_end(ap); 244 245 DPRINTF(("wdopen: ide/%d/%s/%d_%d\n", 246 ctlr, (unit == 0) ? "master" : "slave", lunit, part)); 247 if (lunit != 0) 248 return ENOENT; 249 250 wd = alloc(sizeof(struct wd_softc)); 251 if (wd == NULL) 252 return ENOMEM; 253 254 memset(wd, 0, sizeof(struct wd_softc)); 255 256 wd->sc_part = part; 257 wd->sc_unit = unit; 258 wd->sc_ctlr = ctlr; 259 260 if ((error = wd_get_params(wd)) != 0) 261 return error; 262 263 if ((error = wdgetdisklabel(wd)) != 0) 264 return error; 265 266 f->f_devdata = wd; 267 return 0; 268 } 269 270 /* 271 * Close device. 272 */ 273 int 274 wdclose(struct open_file *f) 275 { 276 277 return 0; 278 } 279 280 /* 281 * Read some data. 282 */ 283 int 284 wdstrategy(void *f, int rw, daddr_t dblk, size_t size, void *p, size_t *rsize) 285 { 286 int i, nsect; 287 daddr_t blkno; 288 struct wd_softc *wd; 289 struct partition *pp; 290 uint8_t *buf; 291 292 if (size == 0) 293 return 0; 294 295 if (rw != F_READ) 296 return EOPNOTSUPP; 297 298 buf = p; 299 wd = f; 300 pp = &wd->sc_label.d_partitions[wd->sc_part]; 301 302 nsect = howmany(size, wd->sc_label.d_secsize); 303 blkno = dblk + pp->p_offset; 304 if (pp->p_fstype == FS_RAID) 305 blkno += RF_PROTECTED_SECTORS; 306 307 for (i = 0; i < nsect; i++, blkno++) { 308 int error; 309 310 if ((error = wdc_exec_read(wd, WDCC_READ, blkno, buf)) != 0) 311 return error; 312 313 buf += wd->sc_label.d_secsize; 314 } 315 316 *rsize = size; 317 return 0; 318 } 319
Indexes created Fri Oct 03 02:09:57 GMT 2025