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 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */ 60 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */ 61 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ 62 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ 63 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ 64 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ 65 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ 66 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ 67 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ 68 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ 69 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ 70 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ 71 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ 72 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ 73 /* 74 * The following causes a failed REQUEST SENSE on lun 1 for 75 * aha152x controller, which causes SCSI code to reset bus. 76 */ 77 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, 78 /* 79 * The following causes a failed REQUEST SENSE on lun 1 for 80 * aha152x controller, which causes SCSI code to reset bus. 81 */ 82 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, 83 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ 84 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ 85 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, 86 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, 87 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, 88 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, 89 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, 90 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ 91 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ 92 /* 93 * The following causes a failed REQUEST SENSE on lun 1 for 94 * seagate controller, which causes SCSI code to reset bus. 95 */ 96 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, 97 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ 98 /* 99 * The following causes a failed REQUEST SENSE on lun 1 for 100 * seagate controller, which causes SCSI code to reset bus. 101 */ 102 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ 103 {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */ 104 {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */ 105 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ 106 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ 107 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ 108 {"NEC", "D3856", "0009", BLIST_NOLUN}, 109 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ 110 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ 111 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ 112 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ 113 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ 114 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN}, 115 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, 116 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ 117 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ 118 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ 119 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ 120 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ 121 122 /* 123 * Other types of devices that have special flags. 124 * Note that all USB devices should have the BLIST_INQUIRY_36 flag. 125 */ 126 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, 127 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, 128 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, 129 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 130 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 131 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 132 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 133 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 134 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 135 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 136 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 137 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 138 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 139 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 140 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 141 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 142 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 143 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 144 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 145 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 146 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 147 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 148 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 149 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 150 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 151 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ 152 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ 153 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, 154 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 155 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 156 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 157 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 158 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 159 {"HITACHI", "DF400", "*", BLIST_SPARSELUN}, 160 {"HITACHI", "DF500", "*", BLIST_SPARSELUN}, 161 {"HITACHI", "DF600", "*", BLIST_SPARSELUN}, 162 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN}, 163 {"HITACHI", "OPEN-E", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN}, 164 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 165 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 166 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 167 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 168 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 169 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 170 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 171 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 172 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 173 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 174 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 175 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 176 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 177 {"INSITE", "I325VM", NULL, BLIST_KEY}, 178 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 179 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 180 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 181 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 182 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 183 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 184 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 185 {"MICROP", "4110", NULL, BLIST_NOTQ}, 186 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 187 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 188 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 189 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 190 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 191 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 192 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 193 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 194 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 195 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 196 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 197 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 198 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 199 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 200 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 201 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 202 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 203 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 204 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 205 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 206 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 207 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 208 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 209 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 210 {"SUN", "T300", "*", BLIST_SPARSELUN}, 211 {"SUN", "T4", "*", BLIST_SPARSELUN}, 212 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 213 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 214 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 215 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 216 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 217 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 218 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 219 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 220 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 221 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 222 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 223 { NULL, NULL, NULL, 0 }, 224 }; 225 226 /* 227 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 228 * devinfo vendor and model strings. 229 */ 230 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 231 char *from, int compatible) 232 { 233 size_t from_length; 234 235 from_length = strlen(from); 236 strncpy(to, from, min(to_length, from_length)); 237 if (from_length < to_length) { 238 if (compatible) { 239 /* 240 * NUL terminate the string if it is short. 241 */ 242 to[from_length] = '\0'; 243 } else { 244 /* 245 * space pad the string if it is short. 246 */ 247 strncpy(&to[from_length], spaces, 248 to_length - from_length); 249 } 250 } 251 if (from_length > to_length) 252 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 253 __FUNCTION__, name, from); 254 } 255 256 /** 257 * scsi_dev_info_list_add: add one dev_info list entry. 258 * @vendor: vendor string 259 * @model: model (product) string 260 * @strflags: integer string 261 * @flag: if strflags NULL, use this flag value 262 * 263 * Description: 264 * Create and add one dev_info entry for @vendor, @model, @strflags or 265 * @flag. If @compatible, add to the tail of the list, do not space 266 * pad, and set devinfo->compatible. The scsi_static_device_list entries 267 * are added with @compatible 1 and @clfags NULL. 268 * 269 * Returns: 0 OK, -error on failure. 270 **/ 271 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 272 char *strflags, int flags) 273 { 274 struct scsi_dev_info_list *devinfo; 275 276 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 277 if (!devinfo) { 278 printk(KERN_ERR "%s: no memory\n", __FUNCTION__); 279 return -ENOMEM; 280 } 281 282 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 283 vendor, compatible); 284 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 285 model, compatible); 286 287 if (strflags) 288 devinfo->flags = simple_strtoul(strflags, NULL, 0); 289 else 290 devinfo->flags = flags; 291 292 devinfo->compatible = compatible; 293 294 if (compatible) 295 list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list); 296 else 297 list_add(&devinfo->dev_info_list, &scsi_dev_info_list); 298 299 return 0; 300 } 301 302 /** 303 * scsi_dev_info_list_add_str: parse dev_list and add to the 304 * scsi_dev_info_list. 305 * @dev_list: string of device flags to add 306 * 307 * Description: 308 * Parse dev_list, and add entries to the scsi_dev_info_list. 309 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 310 * dev_list is modified via strsep. Can be called for command line 311 * addition, for proc or mabye a sysfs interface. 312 * 313 * Returns: 0 if OK, -error on failure. 314 **/ 315 static int scsi_dev_info_list_add_str(char *dev_list) 316 { 317 char *vendor, *model, *strflags, *next; 318 char *next_check; 319 int res = 0; 320 321 next = dev_list; 322 if (next && next[0] == '"') { 323 /* 324 * Ignore both the leading and trailing quote. 325 */ 326 next++; 327 next_check = ",\""; 328 } else { 329 next_check = ","; 330 } 331 332 /* 333 * For the leading and trailing '"' case, the for loop comes 334 * through the last time with vendor[0] == '\0'. 335 */ 336 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 337 && (res == 0); vendor = strsep(&next, ":")) { 338 strflags = NULL; 339 model = strsep(&next, ":"); 340 if (model) 341 strflags = strsep(&next, next_check); 342 if (!model || !strflags) { 343 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 344 " '%s'\n", __FUNCTION__, vendor, model, 345 strflags); 346 res = -EINVAL; 347 } else 348 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 349 model, strflags, 0); 350 } 351 return res; 352 } 353 354 /** 355 * get_device_flags - get device specific flags from the dynamic device 356 * list. Called during scan time. 357 * @vendor: vendor name 358 * @model: model name 359 * 360 * Description: 361 * Search the scsi_dev_info_list for an entry matching @vendor and 362 * @model, if found, return the matching flags value, else return 363 * the host or global default settings. 364 **/ 365 int scsi_get_device_flags(struct scsi_device *sdev, 366 const unsigned char *vendor, 367 const unsigned char *model) 368 { 369 struct scsi_dev_info_list *devinfo; 370 unsigned int bflags; 371 372 bflags = sdev->sdev_bflags; 373 if (!bflags) 374 bflags = scsi_default_dev_flags; 375 376 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { 377 if (devinfo->compatible) { 378 /* 379 * Behave like the older version of get_device_flags. 380 */ 381 size_t max; 382 /* 383 * XXX why skip leading spaces? If an odd INQUIRY 384 * value, that should have been part of the 385 * scsi_static_device_list[] entry, such as " FOO" 386 * rather than "FOO". Since this code is already 387 * here, and we don't know what device it is 388 * trying to work with, leave it as-is. 389 */ 390 max = 8; /* max length of vendor */ 391 while ((max > 0) && *vendor == ' ') { 392 max--; 393 vendor++; 394 } 395 /* 396 * XXX removing the following strlen() would be 397 * good, using it means that for a an entry not in 398 * the list, we scan every byte of every vendor 399 * listed in scsi_static_device_list[], and never match 400 * a single one (and still have to compare at 401 * least the first byte of each vendor). 402 */ 403 if (memcmp(devinfo->vendor, vendor, 404 min(max, strlen(devinfo->vendor)))) 405 continue; 406 /* 407 * Skip spaces again. 408 */ 409 max = 16; /* max length of model */ 410 while ((max > 0) && *model == ' ') { 411 max--; 412 model++; 413 } 414 if (memcmp(devinfo->model, model, 415 min(max, strlen(devinfo->model)))) 416 continue; 417 return devinfo->flags; 418 } else { 419 if (!memcmp(devinfo->vendor, vendor, 420 sizeof(devinfo->vendor)) && 421 !memcmp(devinfo->model, model, 422 sizeof(devinfo->model))) 423 return devinfo->flags; 424 } 425 } 426 return bflags; 427 } 428 429 #ifdef CONFIG_SCSI_PROC_FS 430 /* 431 * proc_scsi_dev_info_read: dump the scsi_dev_info_list via 432 * /proc/scsi/device_info 433 */ 434 static int proc_scsi_devinfo_read(char *buffer, char **start, 435 off_t offset, int length) 436 { 437 struct scsi_dev_info_list *devinfo; 438 int size, len = 0; 439 off_t begin = 0; 440 off_t pos = 0; 441 442 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { 443 size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n", 444 devinfo->vendor, devinfo->model, devinfo->flags); 445 len += size; 446 pos = begin + len; 447 if (pos < offset) { 448 len = 0; 449 begin = pos; 450 } 451 if (pos > offset + length) 452 goto stop_output; 453 } 454 455 stop_output: 456 *start = buffer + (offset - begin); /* Start of wanted data */ 457 len -= (offset - begin); /* Start slop */ 458 if (len > length) 459 len = length; /* Ending slop */ 460 return (len); 461 } 462 463 /* 464 * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via 465 * /proc. 466 * 467 * Use: echo "vendor:model:flag" > /proc/scsi/device_info 468 * 469 * To add a black/white list entry for vendor and model with an integer 470 * value of flag to the scsi device info list. 471 */ 472 static int proc_scsi_devinfo_write(struct file *file, const char __user *buf, 473 unsigned long length, void *data) 474 { 475 char *buffer; 476 int err = length; 477 478 if (!buf || length>PAGE_SIZE) 479 return -EINVAL; 480 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 481 return -ENOMEM; 482 if (copy_from_user(buffer, buf, length)) { 483 err =-EFAULT; 484 goto out; 485 } 486 487 if (length < PAGE_SIZE) 488 buffer[length] = '\0'; 489 else if (buffer[PAGE_SIZE-1]) { 490 err = -EINVAL; 491 goto out; 492 } 493 494 scsi_dev_info_list_add_str(buffer); 495 496 out: 497 free_page((unsigned long)buffer); 498 return err; 499 } 500 #endif /* CONFIG_SCSI_PROC_FS */ 501 502 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 503 MODULE_PARM_DESC(dev_flags, 504 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 505 " list entries for vendor and model with an integer value of flags" 506 " to the scsi device info list"); 507 508 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 509 MODULE_PARM_DESC(default_dev_flags, 510 "scsi default device flag integer value"); 511 512 /** 513 * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove 514 * the scsi_dev_info_list. 515 **/ 516 void scsi_exit_devinfo(void) 517 { 518 struct list_head *lh, *lh_next; 519 struct scsi_dev_info_list *devinfo; 520 521 #ifdef CONFIG_SCSI_PROC_FS 522 remove_proc_entry("scsi/device_info", NULL); 523 #endif 524 525 list_for_each_safe(lh, lh_next, &scsi_dev_info_list) { 526 devinfo = list_entry(lh, struct scsi_dev_info_list, 527 dev_info_list); 528 kfree(devinfo); 529 } 530 } 531 532 /** 533 * scsi_dev_list_init: set up the dynamic device list. 534 * @dev_list: string of device flags to add 535 * 536 * Description: 537 * Add command line @dev_list entries, then add 538 * scsi_static_device_list entries to the scsi device info list. 539 **/ 540 int __init scsi_init_devinfo(void) 541 { 542 #ifdef CONFIG_SCSI_PROC_FS 543 struct proc_dir_entry *p; 544 #endif 545 int error, i; 546 547 error = scsi_dev_info_list_add_str(scsi_dev_flags); 548 if (error) 549 return error; 550 551 for (i = 0; scsi_static_device_list[i].vendor; i++) { 552 error = scsi_dev_info_list_add(1 /* compatibile */, 553 scsi_static_device_list[i].vendor, 554 scsi_static_device_list[i].model, 555 NULL, 556 scsi_static_device_list[i].flags); 557 if (error) 558 goto out; 559 } 560 561 #ifdef CONFIG_SCSI_PROC_FS 562 p = create_proc_entry("scsi/device_info", 0, NULL); 563 if (!p) { 564 error = -ENOMEM; 565 goto out; 566 } 567 568 p->owner = THIS_MODULE; 569 p->get_info = proc_scsi_devinfo_read; 570 p->write_proc = proc_scsi_devinfo_write; 571 #endif /* CONFIG_SCSI_PROC_FS */ 572 573 out: 574 if (error) 575 scsi_exit_devinfo(); 576 return error; 577 } 578