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 struct scsi_dev_info_list_table { 28 struct list_head node; /* our node for being on the master list */ 29 struct list_head scsi_dev_info_list; /* head of dev info list */ 30 const char *name; /* name of list for /proc (NULL for global) */ 31 int key; /* unique numeric identifier */ 32 }; 33 34 35 static const char spaces[] = " "; /* 16 of them */ 36 static unsigned scsi_default_dev_flags; 37 static LIST_HEAD(scsi_dev_info_list); 38 static char scsi_dev_flags[256]; 39 40 /* 41 * scsi_static_device_list: deprecated list of devices that require 42 * settings that differ from the default, includes black-listed (broken) 43 * devices. The entries here are added to the tail of scsi_dev_info_list 44 * via scsi_dev_info_list_init. 45 * 46 * Do not add to this list, use the command line or proc interface to add 47 * to the scsi_dev_info_list. This table will eventually go away. 48 */ 49 static struct { 50 char *vendor; 51 char *model; 52 char *revision; /* revision known to be bad, unused */ 53 unsigned flags; 54 } scsi_static_device_list[] __initdata = { 55 /* 56 * The following devices are known not to tolerate a lun != 0 scan 57 * for one reason or another. Some will respond to all luns, 58 * others will lock up. 59 */ 60 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ 61 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ 62 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ 63 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ 64 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ 65 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ 66 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */ 67 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */ 68 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ 69 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ 70 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ 71 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ 72 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ 73 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ 74 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ 75 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ 76 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ 77 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ 78 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ 79 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ 80 /* 81 * The following causes a failed REQUEST SENSE on lun 1 for 82 * aha152x controller, which causes SCSI code to reset bus. 83 */ 84 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, 85 /* 86 * The following causes a failed REQUEST SENSE on lun 1 for 87 * aha152x controller, which causes SCSI code to reset bus. 88 */ 89 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, 90 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ 91 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ 92 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, 93 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, 94 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, 95 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, 96 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, 97 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ 98 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ 99 /* 100 * The following causes a failed REQUEST SENSE on lun 1 for 101 * seagate controller, which causes SCSI code to reset bus. 102 */ 103 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, 104 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ 105 /* 106 * The following causes a failed REQUEST SENSE on lun 1 for 107 * seagate controller, which causes SCSI code to reset bus. 108 */ 109 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ 110 {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */ 111 {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */ 112 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ 113 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ 114 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ 115 {"NEC", "D3856", "0009", BLIST_NOLUN}, 116 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ 117 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ 118 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ 119 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ 120 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ 121 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN}, 122 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, 123 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ 124 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ 125 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ 126 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ 127 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ 128 129 /* 130 * Other types of devices that have special flags. 131 * Note that all USB devices should have the BLIST_INQUIRY_36 flag. 132 */ 133 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, 134 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, 135 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, 136 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 137 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 138 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, 139 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 140 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 141 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 142 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 143 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 144 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 145 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 146 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 147 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 148 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 149 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 150 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 151 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 152 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 153 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 154 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 155 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 156 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 157 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 158 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 159 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ 160 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ 161 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 162 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, 163 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 164 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 165 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 166 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 167 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 168 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 169 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 170 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 171 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 172 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 173 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 174 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, 175 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 176 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 177 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 178 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 179 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 180 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 181 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 182 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 183 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 184 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 185 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 186 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 187 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 188 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 189 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 190 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 192 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 193 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 194 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 195 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 196 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 197 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 198 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 199 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 200 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 201 {"INSITE", "I325VM", NULL, BLIST_KEY}, 202 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 203 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 204 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 205 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 206 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 207 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 208 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 209 {"MICROP", "4110", NULL, BLIST_NOTQ}, 210 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 211 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 212 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 213 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 216 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"Promise", "", NULL, BLIST_SPARSELUN}, 223 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 224 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 225 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 226 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 227 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 228 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 229 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 230 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 231 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 232 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 233 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 234 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 235 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 236 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 237 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 238 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 239 {"SUN", "T300", "*", BLIST_SPARSELUN}, 240 {"SUN", "T4", "*", BLIST_SPARSELUN}, 241 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 242 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 243 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 244 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 245 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 246 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 247 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 248 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 249 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 250 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 251 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 252 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 253 { NULL, NULL, NULL, 0 }, 254 }; 255 256 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 257 { 258 struct scsi_dev_info_list_table *devinfo_table; 259 int found = 0; 260 261 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 262 if (devinfo_table->key == key) { 263 found = 1; 264 break; 265 } 266 if (!found) 267 return ERR_PTR(-EINVAL); 268 269 return devinfo_table; 270 } 271 272 /* 273 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 274 * devinfo vendor and model strings. 275 */ 276 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 277 char *from, int compatible) 278 { 279 size_t from_length; 280 281 from_length = strlen(from); 282 strncpy(to, from, min(to_length, from_length)); 283 if (from_length < to_length) { 284 if (compatible) { 285 /* 286 * NUL terminate the string if it is short. 287 */ 288 to[from_length] = '\0'; 289 } else { 290 /* 291 * space pad the string if it is short. 292 */ 293 strncpy(&to[from_length], spaces, 294 to_length - from_length); 295 } 296 } 297 if (from_length > to_length) 298 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 299 __func__, name, from); 300 } 301 302 /** 303 * scsi_dev_info_list_add - add one dev_info list entry. 304 * @compatible: if true, null terminate short strings. Otherwise space pad. 305 * @vendor: vendor string 306 * @model: model (product) string 307 * @strflags: integer string 308 * @flags: if strflags NULL, use this flag value 309 * 310 * Description: 311 * Create and add one dev_info entry for @vendor, @model, @strflags or 312 * @flag. If @compatible, add to the tail of the list, do not space 313 * pad, and set devinfo->compatible. The scsi_static_device_list entries 314 * are added with @compatible 1 and @clfags NULL. 315 * 316 * Returns: 0 OK, -error on failure. 317 **/ 318 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 319 char *strflags, int flags) 320 { 321 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 322 strflags, flags, 323 SCSI_DEVINFO_GLOBAL); 324 } 325 326 /** 327 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 328 * @compatible: if true, null terminate short strings. Otherwise space pad. 329 * @vendor: vendor string 330 * @model: model (product) string 331 * @strflags: integer string 332 * @flags: if strflags NULL, use this flag value 333 * @key: specify list to use 334 * 335 * Description: 336 * Create and add one dev_info entry for @vendor, @model, 337 * @strflags or @flag in list specified by @key. If @compatible, 338 * add to the tail of the list, do not space pad, and set 339 * devinfo->compatible. The scsi_static_device_list entries are 340 * added with @compatible 1 and @clfags NULL. 341 * 342 * Returns: 0 OK, -error on failure. 343 **/ 344 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 345 char *strflags, int flags, int key) 346 { 347 struct scsi_dev_info_list *devinfo; 348 struct scsi_dev_info_list_table *devinfo_table = 349 scsi_devinfo_lookup_by_key(key); 350 351 if (IS_ERR(devinfo_table)) 352 return PTR_ERR(devinfo_table); 353 354 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 355 if (!devinfo) { 356 printk(KERN_ERR "%s: no memory\n", __func__); 357 return -ENOMEM; 358 } 359 360 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 361 vendor, compatible); 362 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 363 model, compatible); 364 365 if (strflags) 366 devinfo->flags = simple_strtoul(strflags, NULL, 0); 367 else 368 devinfo->flags = flags; 369 370 devinfo->compatible = compatible; 371 372 if (compatible) 373 list_add_tail(&devinfo->dev_info_list, 374 &devinfo_table->scsi_dev_info_list); 375 else 376 list_add(&devinfo->dev_info_list, 377 &devinfo_table->scsi_dev_info_list); 378 379 return 0; 380 } 381 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 382 383 /** 384 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 385 * @dev_list: string of device flags to add 386 * 387 * Description: 388 * Parse dev_list, and add entries to the scsi_dev_info_list. 389 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 390 * dev_list is modified via strsep. Can be called for command line 391 * addition, for proc or mabye a sysfs interface. 392 * 393 * Returns: 0 if OK, -error on failure. 394 **/ 395 static int scsi_dev_info_list_add_str(char *dev_list) 396 { 397 char *vendor, *model, *strflags, *next; 398 char *next_check; 399 int res = 0; 400 401 next = dev_list; 402 if (next && next[0] == '"') { 403 /* 404 * Ignore both the leading and trailing quote. 405 */ 406 next++; 407 next_check = ",\""; 408 } else { 409 next_check = ","; 410 } 411 412 /* 413 * For the leading and trailing '"' case, the for loop comes 414 * through the last time with vendor[0] == '\0'. 415 */ 416 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 417 && (res == 0); vendor = strsep(&next, ":")) { 418 strflags = NULL; 419 model = strsep(&next, ":"); 420 if (model) 421 strflags = strsep(&next, next_check); 422 if (!model || !strflags) { 423 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 424 " '%s'\n", __func__, vendor, model, 425 strflags); 426 res = -EINVAL; 427 } else 428 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 429 model, strflags, 0); 430 } 431 return res; 432 } 433 434 /** 435 * get_device_flags - get device specific flags from the dynamic device list. 436 * @sdev: &scsi_device to get flags for 437 * @vendor: vendor name 438 * @model: model name 439 * 440 * Description: 441 * Search the global scsi_dev_info_list (specified by list zero) 442 * for an entry matching @vendor and @model, if found, return the 443 * matching flags value, else return the host or global default 444 * settings. Called during scan time. 445 **/ 446 int scsi_get_device_flags(struct scsi_device *sdev, 447 const unsigned char *vendor, 448 const unsigned char *model) 449 { 450 return scsi_get_device_flags_keyed(sdev, vendor, model, 451 SCSI_DEVINFO_GLOBAL); 452 } 453 454 455 /** 456 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 457 * @sdev: &scsi_device to get flags for 458 * @vendor: vendor name 459 * @model: model name 460 * @key: list to look up 461 * 462 * Description: 463 * Search the scsi_dev_info_list specified by @key for an entry 464 * matching @vendor and @model, if found, return the matching 465 * flags value, else return the host or global default settings. 466 * Called during scan time. 467 **/ 468 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 469 const unsigned char *vendor, 470 const unsigned char *model, 471 int key) 472 { 473 struct scsi_dev_info_list *devinfo; 474 struct scsi_dev_info_list_table *devinfo_table; 475 476 devinfo_table = scsi_devinfo_lookup_by_key(key); 477 478 if (IS_ERR(devinfo_table)) 479 return PTR_ERR(devinfo_table); 480 481 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 482 dev_info_list) { 483 if (devinfo->compatible) { 484 /* 485 * Behave like the older version of get_device_flags. 486 */ 487 size_t max; 488 /* 489 * XXX why skip leading spaces? If an odd INQUIRY 490 * value, that should have been part of the 491 * scsi_static_device_list[] entry, such as " FOO" 492 * rather than "FOO". Since this code is already 493 * here, and we don't know what device it is 494 * trying to work with, leave it as-is. 495 */ 496 max = 8; /* max length of vendor */ 497 while ((max > 0) && *vendor == ' ') { 498 max--; 499 vendor++; 500 } 501 /* 502 * XXX removing the following strlen() would be 503 * good, using it means that for a an entry not in 504 * the list, we scan every byte of every vendor 505 * listed in scsi_static_device_list[], and never match 506 * a single one (and still have to compare at 507 * least the first byte of each vendor). 508 */ 509 if (memcmp(devinfo->vendor, vendor, 510 min(max, strlen(devinfo->vendor)))) 511 continue; 512 /* 513 * Skip spaces again. 514 */ 515 max = 16; /* max length of model */ 516 while ((max > 0) && *model == ' ') { 517 max--; 518 model++; 519 } 520 if (memcmp(devinfo->model, model, 521 min(max, strlen(devinfo->model)))) 522 continue; 523 return devinfo->flags; 524 } else { 525 if (!memcmp(devinfo->vendor, vendor, 526 sizeof(devinfo->vendor)) && 527 !memcmp(devinfo->model, model, 528 sizeof(devinfo->model))) 529 return devinfo->flags; 530 } 531 } 532 /* nothing found, return nothing */ 533 if (key != SCSI_DEVINFO_GLOBAL) 534 return 0; 535 536 /* except for the global list, where we have an exception */ 537 if (sdev->sdev_bflags) 538 return sdev->sdev_bflags; 539 540 return scsi_default_dev_flags; 541 } 542 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 543 544 #ifdef CONFIG_SCSI_PROC_FS 545 struct double_list { 546 struct list_head *top; 547 struct list_head *bottom; 548 }; 549 550 static int devinfo_seq_show(struct seq_file *m, void *v) 551 { 552 struct double_list *dl = v; 553 struct scsi_dev_info_list_table *devinfo_table = 554 list_entry(dl->top, struct scsi_dev_info_list_table, node); 555 struct scsi_dev_info_list *devinfo = 556 list_entry(dl->bottom, struct scsi_dev_info_list, 557 dev_info_list); 558 559 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 560 devinfo_table->name) 561 seq_printf(m, "[%s]:\n", devinfo_table->name); 562 563 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 564 devinfo->vendor, devinfo->model, devinfo->flags); 565 return 0; 566 } 567 568 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 569 { 570 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 571 loff_t pos = *ppos; 572 573 if (!dl) 574 return NULL; 575 576 list_for_each(dl->top, &scsi_dev_info_list) { 577 struct scsi_dev_info_list_table *devinfo_table = 578 list_entry(dl->top, struct scsi_dev_info_list_table, 579 node); 580 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 581 if (pos-- == 0) 582 return dl; 583 } 584 585 kfree(dl); 586 return NULL; 587 } 588 589 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 590 { 591 struct double_list *dl = v; 592 struct scsi_dev_info_list_table *devinfo_table = 593 list_entry(dl->top, struct scsi_dev_info_list_table, node); 594 595 ++*ppos; 596 dl->bottom = dl->bottom->next; 597 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 598 dl->top = dl->top->next; 599 if (dl->top == &scsi_dev_info_list) { 600 kfree(dl); 601 return NULL; 602 } 603 devinfo_table = list_entry(dl->top, 604 struct scsi_dev_info_list_table, 605 node); 606 dl->bottom = devinfo_table->scsi_dev_info_list.next; 607 } 608 609 return dl; 610 } 611 612 static void devinfo_seq_stop(struct seq_file *m, void *v) 613 { 614 kfree(v); 615 } 616 617 static const struct seq_operations scsi_devinfo_seq_ops = { 618 .start = devinfo_seq_start, 619 .next = devinfo_seq_next, 620 .stop = devinfo_seq_stop, 621 .show = devinfo_seq_show, 622 }; 623 624 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 625 { 626 return seq_open(file, &scsi_devinfo_seq_ops); 627 } 628 629 /* 630 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 631 * 632 * Description: Adds a black/white list entry for vendor and model with an 633 * integer value of flag to the scsi device info list. 634 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 635 */ 636 static ssize_t proc_scsi_devinfo_write(struct file *file, 637 const char __user *buf, 638 size_t length, loff_t *ppos) 639 { 640 char *buffer; 641 ssize_t err = length; 642 643 if (!buf || length>PAGE_SIZE) 644 return -EINVAL; 645 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 646 return -ENOMEM; 647 if (copy_from_user(buffer, buf, length)) { 648 err =-EFAULT; 649 goto out; 650 } 651 652 if (length < PAGE_SIZE) 653 buffer[length] = '\0'; 654 else if (buffer[PAGE_SIZE-1]) { 655 err = -EINVAL; 656 goto out; 657 } 658 659 scsi_dev_info_list_add_str(buffer); 660 661 out: 662 free_page((unsigned long)buffer); 663 return err; 664 } 665 666 static const struct file_operations scsi_devinfo_proc_fops = { 667 .owner = THIS_MODULE, 668 .open = proc_scsi_devinfo_open, 669 .read = seq_read, 670 .write = proc_scsi_devinfo_write, 671 .llseek = seq_lseek, 672 .release = seq_release, 673 }; 674 #endif /* CONFIG_SCSI_PROC_FS */ 675 676 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 677 MODULE_PARM_DESC(dev_flags, 678 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 679 " list entries for vendor and model with an integer value of flags" 680 " to the scsi device info list"); 681 682 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 683 MODULE_PARM_DESC(default_dev_flags, 684 "scsi default device flag integer value"); 685 686 /** 687 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 688 **/ 689 void scsi_exit_devinfo(void) 690 { 691 #ifdef CONFIG_SCSI_PROC_FS 692 remove_proc_entry("scsi/device_info", NULL); 693 #endif 694 695 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 696 } 697 698 /** 699 * scsi_dev_info_add_list - add a new devinfo list 700 * @key: key of the list to add 701 * @name: Name of the list to add (for /proc/scsi/device_info) 702 * 703 * Adds the requested list, returns zero on success, -EEXIST if the 704 * key is already registered to a list, or other error on failure. 705 */ 706 int scsi_dev_info_add_list(int key, const char *name) 707 { 708 struct scsi_dev_info_list_table *devinfo_table = 709 scsi_devinfo_lookup_by_key(key); 710 711 if (!IS_ERR(devinfo_table)) 712 /* list already exists */ 713 return -EEXIST; 714 715 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 716 717 if (!devinfo_table) 718 return -ENOMEM; 719 720 INIT_LIST_HEAD(&devinfo_table->node); 721 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 722 devinfo_table->name = name; 723 devinfo_table->key = key; 724 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 725 726 return 0; 727 } 728 EXPORT_SYMBOL(scsi_dev_info_add_list); 729 730 /** 731 * scsi_dev_info_remove_list - destroy an added devinfo list 732 * @key: key of the list to destroy 733 * 734 * Iterates over the entire list first, freeing all the values, then 735 * frees the list itself. Returns 0 on success or -EINVAL if the key 736 * can't be found. 737 */ 738 int scsi_dev_info_remove_list(int key) 739 { 740 struct list_head *lh, *lh_next; 741 struct scsi_dev_info_list_table *devinfo_table = 742 scsi_devinfo_lookup_by_key(key); 743 744 if (IS_ERR(devinfo_table)) 745 /* no such list */ 746 return -EINVAL; 747 748 /* remove from the master list */ 749 list_del(&devinfo_table->node); 750 751 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 752 struct scsi_dev_info_list *devinfo; 753 754 devinfo = list_entry(lh, struct scsi_dev_info_list, 755 dev_info_list); 756 kfree(devinfo); 757 } 758 kfree(devinfo_table); 759 760 return 0; 761 } 762 EXPORT_SYMBOL(scsi_dev_info_remove_list); 763 764 /** 765 * scsi_init_devinfo - set up the dynamic device list. 766 * 767 * Description: 768 * Add command line entries from scsi_dev_flags, then add 769 * scsi_static_device_list entries to the scsi device info list. 770 */ 771 int __init scsi_init_devinfo(void) 772 { 773 #ifdef CONFIG_SCSI_PROC_FS 774 struct proc_dir_entry *p; 775 #endif 776 int error, i; 777 778 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 779 if (error) 780 return error; 781 782 error = scsi_dev_info_list_add_str(scsi_dev_flags); 783 if (error) 784 goto out; 785 786 for (i = 0; scsi_static_device_list[i].vendor; i++) { 787 error = scsi_dev_info_list_add(1 /* compatibile */, 788 scsi_static_device_list[i].vendor, 789 scsi_static_device_list[i].model, 790 NULL, 791 scsi_static_device_list[i].flags); 792 if (error) 793 goto out; 794 } 795 796 #ifdef CONFIG_SCSI_PROC_FS 797 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 798 if (!p) { 799 error = -ENOMEM; 800 goto out; 801 } 802 #endif /* CONFIG_SCSI_PROC_FS */ 803 804 out: 805 if (error) 806 scsi_exit_devinfo(); 807 return error; 808 } 809