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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 | /* -*-linux-c-*- * vendor-specific code for SCSI CD-ROM's goes here. * * This is needed becauce most of the new features (multisession and * the like) are too new to be included into the SCSI-II standard (to * be exact: there is'nt anything in my draft copy). * * Aug 1997: Ha! Got a SCSI-3 cdrom spec across my fingers. SCSI-3 does * multisession using the READ TOC command (like SONY). * * Rearranged stuff here: SCSI-3 is included allways, support * for NEC/TOSHIBA/HP commands is optional. * * Gerd Knorr <kraxel@cs.tu-berlin.de> * * -------------------------------------------------------------------------- * * support for XA/multisession-CD's * * - NEC: Detection and support of multisession CD's. * * - TOSHIBA: Detection and support of multisession CD's. * Some XA-Sector tweaking, required for older drives. * * - SONY: Detection and support of multisession CD's. * added by Thomas Quinot <thomas@cuivre.freenix.fr> * * - PIONEER, HITACHI, PLEXTOR, MATSHITA, TEAC, PHILIPS: known to * work with SONY (SCSI3 now) code. * * - HP: Much like SONY, but a little different... (Thomas) * HP-Writers only ??? Maybe other CD-Writers work with this too ? * HP 6020 writers now supported. */ #include <linux/config.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/bcd.h> #include <linux/blk.h> #include "scsi.h" #include "hosts.h" #include <scsi/scsi_ioctl.h> #include <linux/cdrom.h> #include "sr.h" #if 0 #define DEBUG #endif /* here are some constants to sort the vendors into groups */ #define VENDOR_SCSI3 1 /* default: scsi-3 mmc */ #define VENDOR_NEC 2 #define VENDOR_TOSHIBA 3 #define VENDOR_WRITER 4 /* pre-scsi3 writers */ #define VENDOR_TIMEOUT 30*HZ void sr_vendor_init(Scsi_CD *cd) { #ifndef CONFIG_BLK_DEV_SR_VENDOR cd->vendor = VENDOR_SCSI3; #else char *vendor = cd->device->vendor; char *model = cd->device->model; /* default */ cd->vendor = VENDOR_SCSI3; if (cd->readcd_known) /* this is true for scsi3/mmc drives - no more checks */ return; if (cd->device->type == TYPE_WORM) { cd->vendor = VENDOR_WRITER; } else if (!strncmp(vendor, "NEC", 3)) { cd->vendor = VENDOR_NEC; if (!strncmp(model, "CD-ROM DRIVE:25", 15) || !strncmp(model, "CD-ROM DRIVE:36", 15) || !strncmp(model, "CD-ROM DRIVE:83", 15) || !strncmp(model, "CD-ROM DRIVE:84 ", 16) #if 0 /* my NEC 3x returns the read-raw data if a read-raw is followed by a read for the same sector - aeb */ || !strncmp(model, "CD-ROM DRIVE:500", 16) #endif ) /* these can't handle multisession, may hang */ cd->cdi.mask |= CDC_MULTI_SESSION; } else if (!strncmp(vendor, "TOSHIBA", 7)) { cd->vendor = VENDOR_TOSHIBA; } #endif } /* small handy function for switching block length using MODE SELECT, * used by sr_read_sector() */ int sr_set_blocklength(Scsi_CD *cd, int blocklength) { unsigned char *buffer; /* the buffer for the ioctl */ struct cdrom_generic_command cgc; struct ccs_modesel_head *modesel; int rc, density = 0; #ifdef CONFIG_BLK_DEV_SR_VENDOR if (cd->vendor == VENDOR_TOSHIBA) density = (blocklength > 2048) ? 0x81 : 0x83; #endif buffer = (unsigned char *) kmalloc(512, GFP_KERNEL | GFP_DMA); if (!buffer) return -ENOMEM; #ifdef DEBUG printk("%s: MODE SELECT 0x%x/%d\n", cd->cdi.name, density, blocklength); #endif memset(&cgc, 0, sizeof(struct cdrom_generic_command)); cgc.cmd[0] = MODE_SELECT; cgc.cmd[1] = (1 << 4); cgc.cmd[4] = 12; modesel = (struct ccs_modesel_head *) buffer; memset(modesel, 0, sizeof(*modesel)); modesel->block_desc_length = 0x08; modesel->density = density; modesel->block_length_med = (blocklength >> 8) & 0xff; modesel->block_length_lo = blocklength & 0xff; cgc.buffer = buffer; cgc.buflen = sizeof(*modesel); cgc.data_direction = SCSI_DATA_WRITE; cgc.timeout = VENDOR_TIMEOUT; if (0 == (rc = sr_do_ioctl(cd, &cgc))) { cd->device->sector_size = blocklength; } #ifdef DEBUG else printk("%s: switching blocklength to %d bytes failed\n", cd->cdi.name, blocklength); #endif kfree(buffer); return rc; } /* This function gets called after a media change. Checks if the CD is multisession, asks for offset etc. */ int sr_cd_check(struct cdrom_device_info *cdi) { Scsi_CD *cd = cdi->handle; unsigned long sector; unsigned char *buffer; /* the buffer for the ioctl */ struct cdrom_generic_command cgc; int rc, no_multi; if (cd->cdi.mask & CDC_MULTI_SESSION) return 0; buffer = (unsigned char *) kmalloc(512, GFP_KERNEL | GFP_DMA); if (!buffer) return -ENOMEM; sector = 0; /* the multisession sector offset goes here */ no_multi = 0; /* flag: the drive can't handle multisession */ rc = 0; memset(&cgc, 0, sizeof(struct cdrom_generic_command)); switch (cd->vendor) { case VENDOR_SCSI3: cgc.cmd[0] = READ_TOC; cgc.cmd[8] = 12; cgc.cmd[9] = 0x40; cgc.buffer = buffer; cgc.buflen = 12; cgc.quiet = 1; cgc.data_direction = SCSI_DATA_READ; cgc.timeout = VENDOR_TIMEOUT; rc = sr_do_ioctl(cd, &cgc); if (rc != 0) break; if ((buffer[0] << 8) + buffer[1] < 0x0a) { printk(KERN_INFO "%s: Hmm, seems the drive " "doesn't support multisession CD's\n", cd->cdi.name); no_multi = 1; break; } sector = buffer[11] + (buffer[10] << 8) + (buffer[9] << 16) + (buffer[8] << 24); if (buffer[6] <= 1) { /* ignore sector offsets from first track */ sector = 0; } break; #ifdef CONFIG_BLK_DEV_SR_VENDOR case VENDOR_NEC:{ unsigned long min, sec, frame; cgc.cmd[0] = 0xde; cgc.cmd[1] = 0x03; cgc.cmd[2] = 0xb0; cgc.buffer = buffer; cgc.buflen = 0x16; cgc.quiet = 1; cgc.data_direction = SCSI_DATA_READ; cgc.timeout = VENDOR_TIMEOUT; rc = sr_do_ioctl(cd, &cgc); if (rc != 0) break; if (buffer[14] != 0 && buffer[14] != 0xb0) { printk(KERN_INFO "%s: Hmm, seems the cdrom " "doesn't support multisession CD's\n", cd->cdi.name); no_multi = 1; break; } min = BCD2BIN(buffer[15]); sec = BCD2BIN(buffer[16]); frame = BCD2BIN(buffer[17]); sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame; break; } case VENDOR_TOSHIBA:{ unsigned long min, sec, frame; /* we request some disc information (is it a XA-CD ?, * where starts the last session ?) */ cgc.cmd[0] = 0xc7; cgc.cmd[1] = 0x03; cgc.buffer = buffer; cgc.buflen = 4; cgc.quiet = 1; cgc.data_direction = SCSI_DATA_READ; cgc.timeout = VENDOR_TIMEOUT; rc = sr_do_ioctl(cd, &cgc); if (rc == -EINVAL) { printk(KERN_INFO "%s: Hmm, seems the drive " "doesn't support multisession CD's\n", cd->cdi.name); no_multi = 1; break; } if (rc != 0) break; min = BCD2BIN(buffer[1]); sec = BCD2BIN(buffer[2]); frame = BCD2BIN(buffer[3]); sector = min * CD_SECS * CD_FRAMES + sec * CD_FRAMES + frame; if (sector) sector -= CD_MSF_OFFSET; sr_set_blocklength(cd, 2048); break; } case VENDOR_WRITER: cgc.cmd[0] = READ_TOC; cgc.cmd[8] = 0x04; cgc.cmd[9] = 0x40; cgc.buffer = buffer; cgc.buflen = 0x04; cgc.quiet = 1; cgc.data_direction = SCSI_DATA_READ; cgc.timeout = VENDOR_TIMEOUT; rc = sr_do_ioctl(cd, &cgc); if (rc != 0) { break; } if ((rc = buffer[2]) == 0) { printk(KERN_WARNING "%s: No finished session\n", cd->cdi.name); break; } cgc.cmd[0] = READ_TOC; /* Read TOC */ cgc.cmd[6] = rc & 0x7f; /* number of last session */ cgc.cmd[8] = 0x0c; cgc.cmd[9] = 0x40; cgc.buffer = buffer; cgc.buflen = 12; cgc.quiet = 1; cgc.data_direction = SCSI_DATA_READ; cgc.timeout = VENDOR_TIMEOUT; rc = sr_do_ioctl(cd, &cgc); if (rc != 0) { break; } sector = buffer[11] + (buffer[10] << 8) + (buffer[9] << 16) + (buffer[8] << 24); break; #endif /* CONFIG_BLK_DEV_SR_VENDOR */ default: /* should not happen */ printk(KERN_WARNING "%s: unknown vendor code (%i), not initialized ?\n", cd->cdi.name, cd->vendor); sector = 0; no_multi = 1; break; } cd->ms_offset = sector; cd->xa_flag = 0; if (CDS_AUDIO != sr_disk_status(cdi) && 1 == sr_is_xa(cd)) cd->xa_flag = 1; if (2048 != cd->device->sector_size) { sr_set_blocklength(cd, 2048); } if (no_multi) cdi->mask |= CDC_MULTI_SESSION; #ifdef DEBUG if (sector) printk(KERN_DEBUG "%s: multisession offset=%lu\n", cd->cdi.name, sector); #endif kfree(buffer); return rc; } |