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", "1200U3P", NULL, BLIST_NOREPORTLUN}, 132 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 133 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 134 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 135 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 136 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 137 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 138 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 139 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 140 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 141 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 142 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 143 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 144 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 145 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 146 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 147 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 148 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 149 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 150 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 151 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 152 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ 153 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ 154 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 155 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, 156 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 157 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 158 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 159 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 160 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 161 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 162 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 163 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 164 {"HITACHI", "DF400", "*", BLIST_SPARSELUN}, 165 {"HITACHI", "DF500", "*", BLIST_SPARSELUN}, 166 {"HITACHI", "DF600", "*", BLIST_SPARSELUN}, 167 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN}, 168 {"HITACHI", "OPEN-E", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN}, 169 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 170 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 171 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 172 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 173 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 174 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 175 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 176 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 177 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 178 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 179 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 180 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 181 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 182 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 183 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 184 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 185 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 186 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 187 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 188 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 189 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 190 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 192 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 193 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 194 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 195 {"INSITE", "I325VM", NULL, BLIST_KEY}, 196 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 197 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 198 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 199 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 200 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 201 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 202 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 203 {"MICROP", "4110", NULL, BLIST_NOTQ}, 204 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 205 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 206 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 207 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 208 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 209 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 210 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 211 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 212 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 213 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 216 {"Promise", "", NULL, BLIST_SPARSELUN}, 217 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 218 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 219 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 220 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 221 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 222 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 223 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 224 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 225 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 226 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 227 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 228 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 229 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 230 {"SUN", "T300", "*", BLIST_SPARSELUN}, 231 {"SUN", "T4", "*", BLIST_SPARSELUN}, 232 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 233 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 234 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 235 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 236 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 237 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 238 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 239 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 240 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 241 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 242 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 243 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 244 { NULL, NULL, NULL, 0 }, 245 }; 246 247 /* 248 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 249 * devinfo vendor and model strings. 250 */ 251 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 252 char *from, int compatible) 253 { 254 size_t from_length; 255 256 from_length = strlen(from); 257 strncpy(to, from, min(to_length, from_length)); 258 if (from_length < to_length) { 259 if (compatible) { 260 /* 261 * NUL terminate the string if it is short. 262 */ 263 to[from_length] = '\0'; 264 } else { 265 /* 266 * space pad the string if it is short. 267 */ 268 strncpy(&to[from_length], spaces, 269 to_length - from_length); 270 } 271 } 272 if (from_length > to_length) 273 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 274 __FUNCTION__, name, from); 275 } 276 277 /** 278 * scsi_dev_info_list_add: add one dev_info list entry. 279 * @vendor: vendor string 280 * @model: model (product) string 281 * @strflags: integer string 282 * @flag: if strflags NULL, use this flag value 283 * 284 * Description: 285 * Create and add one dev_info entry for @vendor, @model, @strflags or 286 * @flag. If @compatible, add to the tail of the list, do not space 287 * pad, and set devinfo->compatible. The scsi_static_device_list entries 288 * are added with @compatible 1 and @clfags NULL. 289 * 290 * Returns: 0 OK, -error on failure. 291 **/ 292 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 293 char *strflags, int flags) 294 { 295 struct scsi_dev_info_list *devinfo; 296 297 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 298 if (!devinfo) { 299 printk(KERN_ERR "%s: no memory\n", __FUNCTION__); 300 return -ENOMEM; 301 } 302 303 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 304 vendor, compatible); 305 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 306 model, compatible); 307 308 if (strflags) 309 devinfo->flags = simple_strtoul(strflags, NULL, 0); 310 else 311 devinfo->flags = flags; 312 313 devinfo->compatible = compatible; 314 315 if (compatible) 316 list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list); 317 else 318 list_add(&devinfo->dev_info_list, &scsi_dev_info_list); 319 320 return 0; 321 } 322 323 /** 324 * scsi_dev_info_list_add_str: parse dev_list and add to the 325 * scsi_dev_info_list. 326 * @dev_list: string of device flags to add 327 * 328 * Description: 329 * Parse dev_list, and add entries to the scsi_dev_info_list. 330 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 331 * dev_list is modified via strsep. Can be called for command line 332 * addition, for proc or mabye a sysfs interface. 333 * 334 * Returns: 0 if OK, -error on failure. 335 **/ 336 static int scsi_dev_info_list_add_str(char *dev_list) 337 { 338 char *vendor, *model, *strflags, *next; 339 char *next_check; 340 int res = 0; 341 342 next = dev_list; 343 if (next && next[0] == '"') { 344 /* 345 * Ignore both the leading and trailing quote. 346 */ 347 next++; 348 next_check = ",\""; 349 } else { 350 next_check = ","; 351 } 352 353 /* 354 * For the leading and trailing '"' case, the for loop comes 355 * through the last time with vendor[0] == '\0'. 356 */ 357 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 358 && (res == 0); vendor = strsep(&next, ":")) { 359 strflags = NULL; 360 model = strsep(&next, ":"); 361 if (model) 362 strflags = strsep(&next, next_check); 363 if (!model || !strflags) { 364 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 365 " '%s'\n", __FUNCTION__, vendor, model, 366 strflags); 367 res = -EINVAL; 368 } else 369 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 370 model, strflags, 0); 371 } 372 return res; 373 } 374 375 /** 376 * get_device_flags - get device specific flags from the dynamic device 377 * list. Called during scan time. 378 * @vendor: vendor name 379 * @model: model name 380 * 381 * Description: 382 * Search the scsi_dev_info_list for an entry matching @vendor and 383 * @model, if found, return the matching flags value, else return 384 * the host or global default settings. 385 **/ 386 int scsi_get_device_flags(struct scsi_device *sdev, 387 const unsigned char *vendor, 388 const unsigned char *model) 389 { 390 struct scsi_dev_info_list *devinfo; 391 unsigned int bflags; 392 393 bflags = sdev->sdev_bflags; 394 if (!bflags) 395 bflags = scsi_default_dev_flags; 396 397 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { 398 if (devinfo->compatible) { 399 /* 400 * Behave like the older version of get_device_flags. 401 */ 402 size_t max; 403 /* 404 * XXX why skip leading spaces? If an odd INQUIRY 405 * value, that should have been part of the 406 * scsi_static_device_list[] entry, such as " FOO" 407 * rather than "FOO". Since this code is already 408 * here, and we don't know what device it is 409 * trying to work with, leave it as-is. 410 */ 411 max = 8; /* max length of vendor */ 412 while ((max > 0) && *vendor == ' ') { 413 max--; 414 vendor++; 415 } 416 /* 417 * XXX removing the following strlen() would be 418 * good, using it means that for a an entry not in 419 * the list, we scan every byte of every vendor 420 * listed in scsi_static_device_list[], and never match 421 * a single one (and still have to compare at 422 * least the first byte of each vendor). 423 */ 424 if (memcmp(devinfo->vendor, vendor, 425 min(max, strlen(devinfo->vendor)))) 426 continue; 427 /* 428 * Skip spaces again. 429 */ 430 max = 16; /* max length of model */ 431 while ((max > 0) && *model == ' ') { 432 max--; 433 model++; 434 } 435 if (memcmp(devinfo->model, model, 436 min(max, strlen(devinfo->model)))) 437 continue; 438 return devinfo->flags; 439 } else { 440 if (!memcmp(devinfo->vendor, vendor, 441 sizeof(devinfo->vendor)) && 442 !memcmp(devinfo->model, model, 443 sizeof(devinfo->model))) 444 return devinfo->flags; 445 } 446 } 447 return bflags; 448 } 449 450 #ifdef CONFIG_SCSI_PROC_FS 451 /* 452 * proc_scsi_dev_info_read: dump the scsi_dev_info_list via 453 * /proc/scsi/device_info 454 */ 455 static int proc_scsi_devinfo_read(char *buffer, char **start, 456 off_t offset, int length) 457 { 458 struct scsi_dev_info_list *devinfo; 459 int size, len = 0; 460 off_t begin = 0; 461 off_t pos = 0; 462 463 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { 464 size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n", 465 devinfo->vendor, devinfo->model, devinfo->flags); 466 len += size; 467 pos = begin + len; 468 if (pos < offset) { 469 len = 0; 470 begin = pos; 471 } 472 if (pos > offset + length) 473 goto stop_output; 474 } 475 476 stop_output: 477 *start = buffer + (offset - begin); /* Start of wanted data */ 478 len -= (offset - begin); /* Start slop */ 479 if (len > length) 480 len = length; /* Ending slop */ 481 return (len); 482 } 483 484 /* 485 * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via 486 * /proc. 487 * 488 * Use: echo "vendor:model:flag" > /proc/scsi/device_info 489 * 490 * To add a black/white list entry for vendor and model with an integer 491 * value of flag to the scsi device info list. 492 */ 493 static int proc_scsi_devinfo_write(struct file *file, const char __user *buf, 494 unsigned long length, void *data) 495 { 496 char *buffer; 497 int err = length; 498 499 if (!buf || length>PAGE_SIZE) 500 return -EINVAL; 501 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 502 return -ENOMEM; 503 if (copy_from_user(buffer, buf, length)) { 504 err =-EFAULT; 505 goto out; 506 } 507 508 if (length < PAGE_SIZE) 509 buffer[length] = '\0'; 510 else if (buffer[PAGE_SIZE-1]) { 511 err = -EINVAL; 512 goto out; 513 } 514 515 scsi_dev_info_list_add_str(buffer); 516 517 out: 518 free_page((unsigned long)buffer); 519 return err; 520 } 521 #endif /* CONFIG_SCSI_PROC_FS */ 522 523 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 524 MODULE_PARM_DESC(dev_flags, 525 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 526 " list entries for vendor and model with an integer value of flags" 527 " to the scsi device info list"); 528 529 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 530 MODULE_PARM_DESC(default_dev_flags, 531 "scsi default device flag integer value"); 532 533 /** 534 * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove 535 * the scsi_dev_info_list. 536 **/ 537 void scsi_exit_devinfo(void) 538 { 539 struct list_head *lh, *lh_next; 540 struct scsi_dev_info_list *devinfo; 541 542 #ifdef CONFIG_SCSI_PROC_FS 543 remove_proc_entry("scsi/device_info", NULL); 544 #endif 545 546 list_for_each_safe(lh, lh_next, &scsi_dev_info_list) { 547 devinfo = list_entry(lh, struct scsi_dev_info_list, 548 dev_info_list); 549 kfree(devinfo); 550 } 551 } 552 553 /** 554 * scsi_dev_list_init: set up the dynamic device list. 555 * @dev_list: string of device flags to add 556 * 557 * Description: 558 * Add command line @dev_list entries, then add 559 * scsi_static_device_list entries to the scsi device info list. 560 **/ 561 int __init scsi_init_devinfo(void) 562 { 563 #ifdef CONFIG_SCSI_PROC_FS 564 struct proc_dir_entry *p; 565 #endif 566 int error, i; 567 568 error = scsi_dev_info_list_add_str(scsi_dev_flags); 569 if (error) 570 return error; 571 572 for (i = 0; scsi_static_device_list[i].vendor; i++) { 573 error = scsi_dev_info_list_add(1 /* compatibile */, 574 scsi_static_device_list[i].vendor, 575 scsi_static_device_list[i].model, 576 NULL, 577 scsi_static_device_list[i].flags); 578 if (error) 579 goto out; 580 } 581 582 #ifdef CONFIG_SCSI_PROC_FS 583 p = create_proc_entry("scsi/device_info", 0, NULL); 584 if (!p) { 585 error = -ENOMEM; 586 goto out; 587 } 588 589 p->owner = THIS_MODULE; 590 p->get_info = proc_scsi_devinfo_read; 591 p->write_proc = proc_scsi_devinfo_write; 592 #endif /* CONFIG_SCSI_PROC_FS */ 593 594 out: 595 if (error) 596 scsi_exit_devinfo(); 597 return error; 598 } 599