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 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 218 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 219 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 220 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 221 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 222 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 223 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 224 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 225 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 226 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 227 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 228 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 229 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 230 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 231 {"SUN", "T300", "*", BLIST_SPARSELUN}, 232 {"SUN", "T4", "*", BLIST_SPARSELUN}, 233 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 234 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 235 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 236 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 237 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 238 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 239 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 240 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 241 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 242 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 243 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 244 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 245 { NULL, NULL, NULL, 0 }, 246 }; 247 248 /* 249 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 250 * devinfo vendor and model strings. 251 */ 252 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 253 char *from, int compatible) 254 { 255 size_t from_length; 256 257 from_length = strlen(from); 258 strncpy(to, from, min(to_length, from_length)); 259 if (from_length < to_length) { 260 if (compatible) { 261 /* 262 * NUL terminate the string if it is short. 263 */ 264 to[from_length] = '\0'; 265 } else { 266 /* 267 * space pad the string if it is short. 268 */ 269 strncpy(&to[from_length], spaces, 270 to_length - from_length); 271 } 272 } 273 if (from_length > to_length) 274 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 275 __func__, name, from); 276 } 277 278 /** 279 * scsi_dev_info_list_add - add one dev_info list entry. 280 * @compatible: if true, null terminate short strings. Otherwise space pad. 281 * @vendor: vendor string 282 * @model: model (product) string 283 * @strflags: integer string 284 * @flags: if strflags NULL, use this flag value 285 * 286 * Description: 287 * Create and add one dev_info entry for @vendor, @model, @strflags or 288 * @flag. If @compatible, add to the tail of the list, do not space 289 * pad, and set devinfo->compatible. The scsi_static_device_list entries 290 * are added with @compatible 1 and @clfags NULL. 291 * 292 * Returns: 0 OK, -error on failure. 293 **/ 294 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 295 char *strflags, int flags) 296 { 297 struct scsi_dev_info_list *devinfo; 298 299 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 300 if (!devinfo) { 301 printk(KERN_ERR "%s: no memory\n", __func__); 302 return -ENOMEM; 303 } 304 305 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 306 vendor, compatible); 307 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 308 model, compatible); 309 310 if (strflags) 311 devinfo->flags = simple_strtoul(strflags, NULL, 0); 312 else 313 devinfo->flags = flags; 314 315 devinfo->compatible = compatible; 316 317 if (compatible) 318 list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list); 319 else 320 list_add(&devinfo->dev_info_list, &scsi_dev_info_list); 321 322 return 0; 323 } 324 325 /** 326 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 327 * @dev_list: string of device flags to add 328 * 329 * Description: 330 * Parse dev_list, and add entries to the scsi_dev_info_list. 331 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 332 * dev_list is modified via strsep. Can be called for command line 333 * addition, for proc or mabye a sysfs interface. 334 * 335 * Returns: 0 if OK, -error on failure. 336 **/ 337 static int scsi_dev_info_list_add_str(char *dev_list) 338 { 339 char *vendor, *model, *strflags, *next; 340 char *next_check; 341 int res = 0; 342 343 next = dev_list; 344 if (next && next[0] == '"') { 345 /* 346 * Ignore both the leading and trailing quote. 347 */ 348 next++; 349 next_check = ",\""; 350 } else { 351 next_check = ","; 352 } 353 354 /* 355 * For the leading and trailing '"' case, the for loop comes 356 * through the last time with vendor[0] == '\0'. 357 */ 358 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 359 && (res == 0); vendor = strsep(&next, ":")) { 360 strflags = NULL; 361 model = strsep(&next, ":"); 362 if (model) 363 strflags = strsep(&next, next_check); 364 if (!model || !strflags) { 365 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 366 " '%s'\n", __func__, vendor, model, 367 strflags); 368 res = -EINVAL; 369 } else 370 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 371 model, strflags, 0); 372 } 373 return res; 374 } 375 376 /** 377 * get_device_flags - get device specific flags from the dynamic device list. 378 * @sdev: &scsi_device to get flags for 379 * @vendor: vendor name 380 * @model: model name 381 * 382 * Description: 383 * Search the scsi_dev_info_list for an entry matching @vendor and 384 * @model, if found, return the matching flags value, else return 385 * the host or global default settings. Called during scan time. 386 **/ 387 int scsi_get_device_flags(struct scsi_device *sdev, 388 const unsigned char *vendor, 389 const unsigned char *model) 390 { 391 struct scsi_dev_info_list *devinfo; 392 unsigned int bflags; 393 394 bflags = sdev->sdev_bflags; 395 if (!bflags) 396 bflags = scsi_default_dev_flags; 397 398 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { 399 if (devinfo->compatible) { 400 /* 401 * Behave like the older version of get_device_flags. 402 */ 403 size_t max; 404 /* 405 * XXX why skip leading spaces? If an odd INQUIRY 406 * value, that should have been part of the 407 * scsi_static_device_list[] entry, such as " FOO" 408 * rather than "FOO". Since this code is already 409 * here, and we don't know what device it is 410 * trying to work with, leave it as-is. 411 */ 412 max = 8; /* max length of vendor */ 413 while ((max > 0) && *vendor == ' ') { 414 max--; 415 vendor++; 416 } 417 /* 418 * XXX removing the following strlen() would be 419 * good, using it means that for a an entry not in 420 * the list, we scan every byte of every vendor 421 * listed in scsi_static_device_list[], and never match 422 * a single one (and still have to compare at 423 * least the first byte of each vendor). 424 */ 425 if (memcmp(devinfo->vendor, vendor, 426 min(max, strlen(devinfo->vendor)))) 427 continue; 428 /* 429 * Skip spaces again. 430 */ 431 max = 16; /* max length of model */ 432 while ((max > 0) && *model == ' ') { 433 max--; 434 model++; 435 } 436 if (memcmp(devinfo->model, model, 437 min(max, strlen(devinfo->model)))) 438 continue; 439 return devinfo->flags; 440 } else { 441 if (!memcmp(devinfo->vendor, vendor, 442 sizeof(devinfo->vendor)) && 443 !memcmp(devinfo->model, model, 444 sizeof(devinfo->model))) 445 return devinfo->flags; 446 } 447 } 448 return bflags; 449 } 450 451 #ifdef CONFIG_SCSI_PROC_FS 452 static int devinfo_seq_show(struct seq_file *m, void *v) 453 { 454 struct scsi_dev_info_list *devinfo = 455 list_entry(v, struct scsi_dev_info_list, dev_info_list); 456 457 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 458 devinfo->vendor, devinfo->model, devinfo->flags); 459 return 0; 460 } 461 462 static void * devinfo_seq_start(struct seq_file *m, loff_t *pos) 463 { 464 return seq_list_start(&scsi_dev_info_list, *pos); 465 } 466 467 static void * devinfo_seq_next(struct seq_file *m, void *v, loff_t *pos) 468 { 469 return seq_list_next(v, &scsi_dev_info_list, pos); 470 } 471 472 static void devinfo_seq_stop(struct seq_file *m, void *v) 473 { 474 } 475 476 static const struct seq_operations scsi_devinfo_seq_ops = { 477 .start = devinfo_seq_start, 478 .next = devinfo_seq_next, 479 .stop = devinfo_seq_stop, 480 .show = devinfo_seq_show, 481 }; 482 483 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 484 { 485 return seq_open(file, &scsi_devinfo_seq_ops); 486 } 487 488 /* 489 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 490 * 491 * Description: Adds a black/white list entry for vendor and model with an 492 * integer value of flag to the scsi device info list. 493 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 494 */ 495 static ssize_t proc_scsi_devinfo_write(struct file *file, 496 const char __user *buf, 497 size_t length, loff_t *ppos) 498 { 499 char *buffer; 500 ssize_t err = length; 501 502 if (!buf || length>PAGE_SIZE) 503 return -EINVAL; 504 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 505 return -ENOMEM; 506 if (copy_from_user(buffer, buf, length)) { 507 err =-EFAULT; 508 goto out; 509 } 510 511 if (length < PAGE_SIZE) 512 buffer[length] = '\0'; 513 else if (buffer[PAGE_SIZE-1]) { 514 err = -EINVAL; 515 goto out; 516 } 517 518 scsi_dev_info_list_add_str(buffer); 519 520 out: 521 free_page((unsigned long)buffer); 522 return err; 523 } 524 525 static const struct file_operations scsi_devinfo_proc_fops = { 526 .owner = THIS_MODULE, 527 .open = proc_scsi_devinfo_open, 528 .read = seq_read, 529 .write = proc_scsi_devinfo_write, 530 .llseek = seq_lseek, 531 .release = seq_release, 532 }; 533 #endif /* CONFIG_SCSI_PROC_FS */ 534 535 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 536 MODULE_PARM_DESC(dev_flags, 537 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 538 " list entries for vendor and model with an integer value of flags" 539 " to the scsi device info list"); 540 541 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 542 MODULE_PARM_DESC(default_dev_flags, 543 "scsi default device flag integer value"); 544 545 /** 546 * scsi_dev_info_list_delete - called from scsi.c:exit_scsi to remove the scsi_dev_info_list. 547 **/ 548 void scsi_exit_devinfo(void) 549 { 550 struct list_head *lh, *lh_next; 551 struct scsi_dev_info_list *devinfo; 552 553 #ifdef CONFIG_SCSI_PROC_FS 554 remove_proc_entry("scsi/device_info", NULL); 555 #endif 556 557 list_for_each_safe(lh, lh_next, &scsi_dev_info_list) { 558 devinfo = list_entry(lh, struct scsi_dev_info_list, 559 dev_info_list); 560 kfree(devinfo); 561 } 562 } 563 564 /** 565 * scsi_init_devinfo - set up the dynamic device list. 566 * 567 * Description: 568 * Add command line entries from scsi_dev_flags, then add 569 * scsi_static_device_list entries to the scsi device info list. 570 */ 571 int __init scsi_init_devinfo(void) 572 { 573 #ifdef CONFIG_SCSI_PROC_FS 574 struct proc_dir_entry *p; 575 #endif 576 int error, i; 577 578 error = scsi_dev_info_list_add_str(scsi_dev_flags); 579 if (error) 580 return error; 581 582 for (i = 0; scsi_static_device_list[i].vendor; i++) { 583 error = scsi_dev_info_list_add(1 /* compatibile */, 584 scsi_static_device_list[i].vendor, 585 scsi_static_device_list[i].model, 586 NULL, 587 scsi_static_device_list[i].flags); 588 if (error) 589 goto out; 590 } 591 592 #ifdef CONFIG_SCSI_PROC_FS 593 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 594 if (!p) { 595 error = -ENOMEM; 596 goto out; 597 } 598 599 p->owner = THIS_MODULE; 600 #endif /* CONFIG_SCSI_PROC_FS */ 601 602 out: 603 if (error) 604 scsi_exit_devinfo(); 605 return error; 606 } 607