1 2 #include <linux/blkdev.h> 3 #include <linux/init.h> 4 #include <linux/kernel.h> 5 #include <linux/module.h> 6 #include <linux/moduleparam.h> 7 #include <linux/proc_fs.h> 8 #include <linux/seq_file.h> 9 10 #include <scsi/scsi_device.h> 11 #include <scsi/scsi_devinfo.h> 12 13 #include "scsi_priv.h" 14 15 16 /* 17 * scsi_dev_info_list: structure to hold black/white listed devices. 18 */ 19 struct scsi_dev_info_list { 20 struct list_head dev_info_list; 21 char vendor[8]; 22 char model[16]; 23 unsigned flags; 24 unsigned compatible; /* for use with scsi_static_device_list entries */ 25 }; 26 27 28 static const char spaces[] = " "; /* 16 of them */ 29 static unsigned scsi_default_dev_flags; 30 static LIST_HEAD(scsi_dev_info_list); 31 static char scsi_dev_flags[256]; 32 33 /* 34 * scsi_static_device_list: deprecated list of devices that require 35 * settings that differ from the default, includes black-listed (broken) 36 * devices. The entries here are added to the tail of scsi_dev_info_list 37 * via scsi_dev_info_list_init. 38 * 39 * Do not add to this list, use the command line or proc interface to add 40 * to the scsi_dev_info_list. This table will eventually go away. 41 */ 42 static struct { 43 char *vendor; 44 char *model; 45 char *revision; /* revision known to be bad, unused */ 46 unsigned flags; 47 } scsi_static_device_list[] __initdata = { 48 /* 49 * The following devices are known not to tolerate a lun != 0 scan 50 * for one reason or another. Some will respond to all luns, 51 * others will lock up. 52 */ 53 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ 54 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ 55 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ 56 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ 57 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ 58 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ 59 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ 60 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ 61 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ 62 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ 63 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ 64 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ 65 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ 66 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ 67 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ 68 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ 69 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ 70 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ 71 /* 72 * The following causes a failed REQUEST SENSE on lun 1 for 73 * aha152x controller, which causes SCSI code to reset bus. 74 */ 75 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, 76 /* 77 * The following causes a failed REQUEST SENSE on lun 1 for 78 * aha152x controller, which causes SCSI code to reset bus. 79 */ 80 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, 81 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ 82 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ 83 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, 84 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, 85 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, 86 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, 87 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, 88 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ 89 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ 90 /* 91 * The following causes a failed REQUEST SENSE on lun 1 for 92 * seagate controller, which causes SCSI code to reset bus. 93 */ 94 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, 95 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ 96 /* 97 * The following causes a failed REQUEST SENSE on lun 1 for 98 * seagate controller, which causes SCSI code to reset bus. 99 */ 100 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ 101 {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */ 102 {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */ 103 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ 104 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ 105 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ 106 {"NEC", "D3856", "0009", BLIST_NOLUN}, 107 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ 108 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ 109 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ 110 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ 111 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ 112 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN}, 113 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, 114 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ 115 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ 116 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ 117 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ 118 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ 119 120 /* 121 * Other types of devices that have special flags. 122 * Note that all USB devices should have the BLIST_INQUIRY_36 flag. 123 */ 124 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, 125 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, 126 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, 127 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 128 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 129 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 130 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 131 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 132 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 133 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 134 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 135 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 136 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 137 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 138 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 139 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 140 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 141 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 142 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 143 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 144 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 145 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 146 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 147 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 148 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 149 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ 150 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ 151 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, 152 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 153 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 154 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 155 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 156 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 157 {"HITACHI", "DF400", "*", BLIST_SPARSELUN}, 158 {"HITACHI", "DF500", "*", BLIST_SPARSELUN}, 159 {"HITACHI", "DF600", "*", BLIST_SPARSELUN}, 160 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 161 {"HP", "OPEN-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP XP Arrays */ 162 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 163 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 164 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 165 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 166 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 167 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 168 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 169 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 170 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 171 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 172 {"INSITE", "I325VM", NULL, BLIST_KEY}, 173 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 174 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 175 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 176 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 177 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 178 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 179 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 180 {"MICROP", "4110", NULL, BLIST_NOTQ}, 181 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 182 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 183 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 184 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 185 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 186 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 187 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 188 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 189 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 190 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 191 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 192 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 193 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 194 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 195 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 196 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 197 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 198 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 199 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 200 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 201 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 202 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 203 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 204 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 205 {"SUN", "T300", "*", BLIST_SPARSELUN}, 206 {"SUN", "T4", "*", BLIST_SPARSELUN}, 207 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 208 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 209 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 210 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 211 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 212 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 213 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 214 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 215 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 216 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 217 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 218 { NULL, NULL, NULL, 0 }, 219 }; 220 221 /* 222 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 223 * devinfo vendor and model strings. 224 */ 225 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 226 char *from, int compatible) 227 { 228 size_t from_length; 229 230 from_length = strlen(from); 231 strncpy(to, from, min(to_length, from_length)); 232 if (from_length < to_length) { 233 if (compatible) { 234 /* 235 * NUL terminate the string if it is short. 236 */ 237 to[from_length] = '\0'; 238 } else { 239 /* 240 * space pad the string if it is short. 241 */ 242 strncpy(&to[from_length], spaces, 243 to_length - from_length); 244 } 245 } 246 if (from_length > to_length) 247 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 248 __FUNCTION__, name, from); 249 } 250 251 /** 252 * scsi_dev_info_list_add: add one dev_info list entry. 253 * @vendor: vendor string 254 * @model: model (product) string 255 * @strflags: integer string 256 * @flag: if strflags NULL, use this flag value 257 * 258 * Description: 259 * Create and add one dev_info entry for @vendor, @model, @strflags or 260 * @flag. If @compatible, add to the tail of the list, do not space 261 * pad, and set devinfo->compatible. The scsi_static_device_list entries 262 * are added with @compatible 1 and @clfags NULL. 263 * 264 * Returns: 0 OK, -error on failure. 265 **/ 266 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 267 char *strflags, int flags) 268 { 269 struct scsi_dev_info_list *devinfo; 270 271 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 272 if (!devinfo) { 273 printk(KERN_ERR "%s: no memory\n", __FUNCTION__); 274 return -ENOMEM; 275 } 276 277 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 278 vendor, compatible); 279 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 280 model, compatible); 281 282 if (strflags) 283 devinfo->flags = simple_strtoul(strflags, NULL, 0); 284 else 285 devinfo->flags = flags; 286 287 devinfo->compatible = compatible; 288 289 if (compatible) 290 list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list); 291 else 292 list_add(&devinfo->dev_info_list, &scsi_dev_info_list); 293 294 return 0; 295 } 296 297 /** 298 * scsi_dev_info_list_add_str: parse dev_list and add to the 299 * scsi_dev_info_list. 300 * @dev_list: string of device flags to add 301 * 302 * Description: 303 * Parse dev_list, and add entries to the scsi_dev_info_list. 304 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 305 * dev_list is modified via strsep. Can be called for command line 306 * addition, for proc or mabye a sysfs interface. 307 * 308 * Returns: 0 if OK, -error on failure. 309 **/ 310 static int scsi_dev_info_list_add_str(char *dev_list) 311 { 312 char *vendor, *model, *strflags, *next; 313 char *next_check; 314 int res = 0; 315 316 next = dev_list; 317 if (next && next[0] == '"') { 318 /* 319 * Ignore both the leading and trailing quote. 320 */ 321 next++; 322 next_check = ",\""; 323 } else { 324 next_check = ","; 325 } 326 327 /* 328 * For the leading and trailing '"' case, the for loop comes 329 * through the last time with vendor[0] == '\0'. 330 */ 331 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 332 && (res == 0); vendor = strsep(&next, ":")) { 333 strflags = NULL; 334 model = strsep(&next, ":"); 335 if (model) 336 strflags = strsep(&next, next_check); 337 if (!model || !strflags) { 338 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 339 " '%s'\n", __FUNCTION__, vendor, model, 340 strflags); 341 res = -EINVAL; 342 } else 343 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 344 model, strflags, 0); 345 } 346 return res; 347 } 348 349 /** 350 * get_device_flags - get device specific flags from the dynamic device 351 * list. Called during scan time. 352 * @vendor: vendor name 353 * @model: model name 354 * 355 * Description: 356 * Search the scsi_dev_info_list for an entry matching @vendor and 357 * @model, if found, return the matching flags value, else return 358 * the host or global default settings. 359 **/ 360 int scsi_get_device_flags(struct scsi_device *sdev, 361 const unsigned char *vendor, 362 const unsigned char *model) 363 { 364 struct scsi_dev_info_list *devinfo; 365 unsigned int bflags; 366 367 bflags = sdev->sdev_bflags; 368 if (!bflags) 369 bflags = scsi_default_dev_flags; 370 371 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { 372 if (devinfo->compatible) { 373 /* 374 * Behave like the older version of get_device_flags. 375 */ 376 size_t max; 377 /* 378 * XXX why skip leading spaces? If an odd INQUIRY 379 * value, that should have been part of the 380 * scsi_static_device_list[] entry, such as " FOO" 381 * rather than "FOO". Since this code is already 382 * here, and we don't know what device it is 383 * trying to work with, leave it as-is. 384 */ 385 max = 8; /* max length of vendor */ 386 while ((max > 0) && *vendor == ' ') { 387 max--; 388 vendor++; 389 } 390 /* 391 * XXX removing the following strlen() would be 392 * good, using it means that for a an entry not in 393 * the list, we scan every byte of every vendor 394 * listed in scsi_static_device_list[], and never match 395 * a single one (and still have to compare at 396 * least the first byte of each vendor). 397 */ 398 if (memcmp(devinfo->vendor, vendor, 399 min(max, strlen(devinfo->vendor)))) 400 continue; 401 /* 402 * Skip spaces again. 403 */ 404 max = 16; /* max length of model */ 405 while ((max > 0) && *model == ' ') { 406 max--; 407 model++; 408 } 409 if (memcmp(devinfo->model, model, 410 min(max, strlen(devinfo->model)))) 411 continue; 412 return devinfo->flags; 413 } else { 414 if (!memcmp(devinfo->vendor, vendor, 415 sizeof(devinfo->vendor)) && 416 !memcmp(devinfo->model, model, 417 sizeof(devinfo->model))) 418 return devinfo->flags; 419 } 420 } 421 return bflags; 422 } 423 424 #ifdef CONFIG_SCSI_PROC_FS 425 /* 426 * proc_scsi_dev_info_read: dump the scsi_dev_info_list via 427 * /proc/scsi/device_info 428 */ 429 static int proc_scsi_devinfo_read(char *buffer, char **start, 430 off_t offset, int length) 431 { 432 struct scsi_dev_info_list *devinfo; 433 int size, len = 0; 434 off_t begin = 0; 435 off_t pos = 0; 436 437 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { 438 size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n", 439 devinfo->vendor, devinfo->model, devinfo->flags); 440 len += size; 441 pos = begin + len; 442 if (pos < offset) { 443 len = 0; 444 begin = pos; 445 } 446 if (pos > offset + length) 447 goto stop_output; 448 } 449 450 stop_output: 451 *start = buffer + (offset - begin); /* Start of wanted data */ 452 len -= (offset - begin); /* Start slop */ 453 if (len > length) 454 len = length; /* Ending slop */ 455 return (len); 456 } 457 458 /* 459 * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via 460 * /proc. 461 * 462 * Use: echo "vendor:model:flag" > /proc/scsi/device_info 463 * 464 * To add a black/white list entry for vendor and model with an integer 465 * value of flag to the scsi device info list. 466 */ 467 static int proc_scsi_devinfo_write(struct file *file, const char __user *buf, 468 unsigned long length, void *data) 469 { 470 char *buffer; 471 int err = length; 472 473 if (!buf || length>PAGE_SIZE) 474 return -EINVAL; 475 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 476 return -ENOMEM; 477 if (copy_from_user(buffer, buf, length)) { 478 err =-EFAULT; 479 goto out; 480 } 481 482 if (length < PAGE_SIZE) 483 buffer[length] = '\0'; 484 else if (buffer[PAGE_SIZE-1]) { 485 err = -EINVAL; 486 goto out; 487 } 488 489 scsi_dev_info_list_add_str(buffer); 490 491 out: 492 free_page((unsigned long)buffer); 493 return err; 494 } 495 #endif /* CONFIG_SCSI_PROC_FS */ 496 497 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 498 MODULE_PARM_DESC(dev_flags, 499 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 500 " list entries for vendor and model with an integer value of flags" 501 " to the scsi device info list"); 502 503 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 504 MODULE_PARM_DESC(default_dev_flags, 505 "scsi default device flag integer value"); 506 507 /** 508 * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove 509 * the scsi_dev_info_list. 510 **/ 511 void scsi_exit_devinfo(void) 512 { 513 struct list_head *lh, *lh_next; 514 struct scsi_dev_info_list *devinfo; 515 516 #ifdef CONFIG_SCSI_PROC_FS 517 remove_proc_entry("scsi/device_info", NULL); 518 #endif 519 520 list_for_each_safe(lh, lh_next, &scsi_dev_info_list) { 521 devinfo = list_entry(lh, struct scsi_dev_info_list, 522 dev_info_list); 523 kfree(devinfo); 524 } 525 } 526 527 /** 528 * scsi_dev_list_init: set up the dynamic device list. 529 * @dev_list: string of device flags to add 530 * 531 * Description: 532 * Add command line @dev_list entries, then add 533 * scsi_static_device_list entries to the scsi device info list. 534 **/ 535 int __init scsi_init_devinfo(void) 536 { 537 #ifdef CONFIG_SCSI_PROC_FS 538 struct proc_dir_entry *p; 539 #endif 540 int error, i; 541 542 error = scsi_dev_info_list_add_str(scsi_dev_flags); 543 if (error) 544 return error; 545 546 for (i = 0; scsi_static_device_list[i].vendor; i++) { 547 error = scsi_dev_info_list_add(1 /* compatibile */, 548 scsi_static_device_list[i].vendor, 549 scsi_static_device_list[i].model, 550 NULL, 551 scsi_static_device_list[i].flags); 552 if (error) 553 goto out; 554 } 555 556 #ifdef CONFIG_SCSI_PROC_FS 557 p = create_proc_entry("scsi/device_info", 0, NULL); 558 if (!p) { 559 error = -ENOMEM; 560 goto out; 561 } 562 563 p->owner = THIS_MODULE; 564 p->get_info = proc_scsi_devinfo_read; 565 p->write_proc = proc_scsi_devinfo_write; 566 #endif /* CONFIG_SCSI_PROC_FS */ 567 568 out: 569 if (error) 570 scsi_exit_devinfo(); 571 return error; 572 } 573