scsi_devinfo.c revision e0b2e597d5dd8c4f3778545f65c29a9c6aba0e3a
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 */ 19struct 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 28static const char spaces[] = " "; /* 16 of them */ 29static unsigned scsi_default_dev_flags; 30static LIST_HEAD(scsi_dev_info_list); 31static 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 */ 42static 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", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 154 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, 155 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 156 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 157 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 158 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 159 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 160 {"HITACHI", "DF400", "*", BLIST_SPARSELUN}, 161 {"HITACHI", "DF500", "*", BLIST_SPARSELUN}, 162 {"HITACHI", "DF600", "*", BLIST_SPARSELUN}, 163 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN}, 164 {"HITACHI", "OPEN-E", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN}, 165 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 166 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 167 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 168 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 169 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 170 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 171 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 172 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 173 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 174 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 175 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 176 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 177 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 178 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 179 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 180 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 181 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 182 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 183 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 184 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 185 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 186 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 187 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 188 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 189 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 190 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 191 {"INSITE", "I325VM", NULL, BLIST_KEY}, 192 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 193 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 194 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 195 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 196 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 197 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 198 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 199 {"MICROP", "4110", NULL, BLIST_NOTQ}, 200 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 201 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 202 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 203 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 204 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 205 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 206 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 207 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 208 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 209 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 210 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 211 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 212 {"Promise", "", NULL, BLIST_SPARSELUN}, 213 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 214 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 215 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 216 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 217 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 218 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 219 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 220 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 221 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 222 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 223 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 224 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 225 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 226 {"SUN", "T300", "*", BLIST_SPARSELUN}, 227 {"SUN", "T4", "*", BLIST_SPARSELUN}, 228 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 229 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 230 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 231 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 232 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 233 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 234 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 235 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 236 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 237 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 238 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 239 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 240 { NULL, NULL, NULL, 0 }, 241}; 242 243/* 244 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 245 * devinfo vendor and model strings. 246 */ 247static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 248 char *from, int compatible) 249{ 250 size_t from_length; 251 252 from_length = strlen(from); 253 strncpy(to, from, min(to_length, from_length)); 254 if (from_length < to_length) { 255 if (compatible) { 256 /* 257 * NUL terminate the string if it is short. 258 */ 259 to[from_length] = '\0'; 260 } else { 261 /* 262 * space pad the string if it is short. 263 */ 264 strncpy(&to[from_length], spaces, 265 to_length - from_length); 266 } 267 } 268 if (from_length > to_length) 269 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 270 __FUNCTION__, name, from); 271} 272 273/** 274 * scsi_dev_info_list_add: add one dev_info list entry. 275 * @vendor: vendor string 276 * @model: model (product) string 277 * @strflags: integer string 278 * @flag: if strflags NULL, use this flag value 279 * 280 * Description: 281 * Create and add one dev_info entry for @vendor, @model, @strflags or 282 * @flag. If @compatible, add to the tail of the list, do not space 283 * pad, and set devinfo->compatible. The scsi_static_device_list entries 284 * are added with @compatible 1 and @clfags NULL. 285 * 286 * Returns: 0 OK, -error on failure. 287 **/ 288static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 289 char *strflags, int flags) 290{ 291 struct scsi_dev_info_list *devinfo; 292 293 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 294 if (!devinfo) { 295 printk(KERN_ERR "%s: no memory\n", __FUNCTION__); 296 return -ENOMEM; 297 } 298 299 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 300 vendor, compatible); 301 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 302 model, compatible); 303 304 if (strflags) 305 devinfo->flags = simple_strtoul(strflags, NULL, 0); 306 else 307 devinfo->flags = flags; 308 309 devinfo->compatible = compatible; 310 311 if (compatible) 312 list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list); 313 else 314 list_add(&devinfo->dev_info_list, &scsi_dev_info_list); 315 316 return 0; 317} 318 319/** 320 * scsi_dev_info_list_add_str: parse dev_list and add to the 321 * scsi_dev_info_list. 322 * @dev_list: string of device flags to add 323 * 324 * Description: 325 * Parse dev_list, and add entries to the scsi_dev_info_list. 326 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 327 * dev_list is modified via strsep. Can be called for command line 328 * addition, for proc or mabye a sysfs interface. 329 * 330 * Returns: 0 if OK, -error on failure. 331 **/ 332static int scsi_dev_info_list_add_str(char *dev_list) 333{ 334 char *vendor, *model, *strflags, *next; 335 char *next_check; 336 int res = 0; 337 338 next = dev_list; 339 if (next && next[0] == '"') { 340 /* 341 * Ignore both the leading and trailing quote. 342 */ 343 next++; 344 next_check = ",\""; 345 } else { 346 next_check = ","; 347 } 348 349 /* 350 * For the leading and trailing '"' case, the for loop comes 351 * through the last time with vendor[0] == '\0'. 352 */ 353 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 354 && (res == 0); vendor = strsep(&next, ":")) { 355 strflags = NULL; 356 model = strsep(&next, ":"); 357 if (model) 358 strflags = strsep(&next, next_check); 359 if (!model || !strflags) { 360 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 361 " '%s'\n", __FUNCTION__, vendor, model, 362 strflags); 363 res = -EINVAL; 364 } else 365 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 366 model, strflags, 0); 367 } 368 return res; 369} 370 371/** 372 * get_device_flags - get device specific flags from the dynamic device 373 * list. Called during scan time. 374 * @vendor: vendor name 375 * @model: model name 376 * 377 * Description: 378 * Search the scsi_dev_info_list for an entry matching @vendor and 379 * @model, if found, return the matching flags value, else return 380 * the host or global default settings. 381 **/ 382int scsi_get_device_flags(struct scsi_device *sdev, 383 const unsigned char *vendor, 384 const unsigned char *model) 385{ 386 struct scsi_dev_info_list *devinfo; 387 unsigned int bflags; 388 389 bflags = sdev->sdev_bflags; 390 if (!bflags) 391 bflags = scsi_default_dev_flags; 392 393 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { 394 if (devinfo->compatible) { 395 /* 396 * Behave like the older version of get_device_flags. 397 */ 398 size_t max; 399 /* 400 * XXX why skip leading spaces? If an odd INQUIRY 401 * value, that should have been part of the 402 * scsi_static_device_list[] entry, such as " FOO" 403 * rather than "FOO". Since this code is already 404 * here, and we don't know what device it is 405 * trying to work with, leave it as-is. 406 */ 407 max = 8; /* max length of vendor */ 408 while ((max > 0) && *vendor == ' ') { 409 max--; 410 vendor++; 411 } 412 /* 413 * XXX removing the following strlen() would be 414 * good, using it means that for a an entry not in 415 * the list, we scan every byte of every vendor 416 * listed in scsi_static_device_list[], and never match 417 * a single one (and still have to compare at 418 * least the first byte of each vendor). 419 */ 420 if (memcmp(devinfo->vendor, vendor, 421 min(max, strlen(devinfo->vendor)))) 422 continue; 423 /* 424 * Skip spaces again. 425 */ 426 max = 16; /* max length of model */ 427 while ((max > 0) && *model == ' ') { 428 max--; 429 model++; 430 } 431 if (memcmp(devinfo->model, model, 432 min(max, strlen(devinfo->model)))) 433 continue; 434 return devinfo->flags; 435 } else { 436 if (!memcmp(devinfo->vendor, vendor, 437 sizeof(devinfo->vendor)) && 438 !memcmp(devinfo->model, model, 439 sizeof(devinfo->model))) 440 return devinfo->flags; 441 } 442 } 443 return bflags; 444} 445 446#ifdef CONFIG_SCSI_PROC_FS 447/* 448 * proc_scsi_dev_info_read: dump the scsi_dev_info_list via 449 * /proc/scsi/device_info 450 */ 451static int proc_scsi_devinfo_read(char *buffer, char **start, 452 off_t offset, int length) 453{ 454 struct scsi_dev_info_list *devinfo; 455 int size, len = 0; 456 off_t begin = 0; 457 off_t pos = 0; 458 459 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { 460 size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n", 461 devinfo->vendor, devinfo->model, devinfo->flags); 462 len += size; 463 pos = begin + len; 464 if (pos < offset) { 465 len = 0; 466 begin = pos; 467 } 468 if (pos > offset + length) 469 goto stop_output; 470 } 471 472stop_output: 473 *start = buffer + (offset - begin); /* Start of wanted data */ 474 len -= (offset - begin); /* Start slop */ 475 if (len > length) 476 len = length; /* Ending slop */ 477 return (len); 478} 479 480/* 481 * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via 482 * /proc. 483 * 484 * Use: echo "vendor:model:flag" > /proc/scsi/device_info 485 * 486 * To add a black/white list entry for vendor and model with an integer 487 * value of flag to the scsi device info list. 488 */ 489static int proc_scsi_devinfo_write(struct file *file, const char __user *buf, 490 unsigned long length, void *data) 491{ 492 char *buffer; 493 int err = length; 494 495 if (!buf || length>PAGE_SIZE) 496 return -EINVAL; 497 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 498 return -ENOMEM; 499 if (copy_from_user(buffer, buf, length)) { 500 err =-EFAULT; 501 goto out; 502 } 503 504 if (length < PAGE_SIZE) 505 buffer[length] = '\0'; 506 else if (buffer[PAGE_SIZE-1]) { 507 err = -EINVAL; 508 goto out; 509 } 510 511 scsi_dev_info_list_add_str(buffer); 512 513out: 514 free_page((unsigned long)buffer); 515 return err; 516} 517#endif /* CONFIG_SCSI_PROC_FS */ 518 519module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 520MODULE_PARM_DESC(dev_flags, 521 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 522 " list entries for vendor and model with an integer value of flags" 523 " to the scsi device info list"); 524 525module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 526MODULE_PARM_DESC(default_dev_flags, 527 "scsi default device flag integer value"); 528 529/** 530 * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove 531 * the scsi_dev_info_list. 532 **/ 533void scsi_exit_devinfo(void) 534{ 535 struct list_head *lh, *lh_next; 536 struct scsi_dev_info_list *devinfo; 537 538#ifdef CONFIG_SCSI_PROC_FS 539 remove_proc_entry("scsi/device_info", NULL); 540#endif 541 542 list_for_each_safe(lh, lh_next, &scsi_dev_info_list) { 543 devinfo = list_entry(lh, struct scsi_dev_info_list, 544 dev_info_list); 545 kfree(devinfo); 546 } 547} 548 549/** 550 * scsi_dev_list_init: set up the dynamic device list. 551 * @dev_list: string of device flags to add 552 * 553 * Description: 554 * Add command line @dev_list entries, then add 555 * scsi_static_device_list entries to the scsi device info list. 556 **/ 557int __init scsi_init_devinfo(void) 558{ 559#ifdef CONFIG_SCSI_PROC_FS 560 struct proc_dir_entry *p; 561#endif 562 int error, i; 563 564 error = scsi_dev_info_list_add_str(scsi_dev_flags); 565 if (error) 566 return error; 567 568 for (i = 0; scsi_static_device_list[i].vendor; i++) { 569 error = scsi_dev_info_list_add(1 /* compatibile */, 570 scsi_static_device_list[i].vendor, 571 scsi_static_device_list[i].model, 572 NULL, 573 scsi_static_device_list[i].flags); 574 if (error) 575 goto out; 576 } 577 578#ifdef CONFIG_SCSI_PROC_FS 579 p = create_proc_entry("scsi/device_info", 0, NULL); 580 if (!p) { 581 error = -ENOMEM; 582 goto out; 583 } 584 585 p->owner = THIS_MODULE; 586 p->get_info = proc_scsi_devinfo_read; 587 p->write_proc = proc_scsi_devinfo_write; 588#endif /* CONFIG_SCSI_PROC_FS */ 589 590 out: 591 if (error) 592 scsi_exit_devinfo(); 593 return error; 594} 595