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 #include <linux/slab.h> 10 11 #include <scsi/scsi_device.h> 12 #include <scsi/scsi_devinfo.h> 13 14 #include "scsi_priv.h" 15 16 17 /* 18 * scsi_dev_info_list: structure to hold black/white listed devices. 19 */ 20 struct scsi_dev_info_list { 21 struct list_head dev_info_list; 22 char vendor[8]; 23 char model[16]; 24 unsigned flags; 25 unsigned compatible; /* for use with scsi_static_device_list entries */ 26 }; 27 28 struct scsi_dev_info_list_table { 29 struct list_head node; /* our node for being on the master list */ 30 struct list_head scsi_dev_info_list; /* head of dev info list */ 31 const char *name; /* name of list for /proc (NULL for global) */ 32 int key; /* unique numeric identifier */ 33 }; 34 35 36 static const char spaces[] = " "; /* 16 of them */ 37 static unsigned scsi_default_dev_flags; 38 static LIST_HEAD(scsi_dev_info_list); 39 static char scsi_dev_flags[256]; 40 41 /* 42 * scsi_static_device_list: deprecated list of devices that require 43 * settings that differ from the default, includes black-listed (broken) 44 * devices. The entries here are added to the tail of scsi_dev_info_list 45 * via scsi_dev_info_list_init. 46 * 47 * Do not add to this list, use the command line or proc interface to add 48 * to the scsi_dev_info_list. This table will eventually go away. 49 */ 50 static struct { 51 char *vendor; 52 char *model; 53 char *revision; /* revision known to be bad, unused */ 54 unsigned flags; 55 } scsi_static_device_list[] __initdata = { 56 /* 57 * The following devices are known not to tolerate a lun != 0 scan 58 * for one reason or another. Some will respond to all luns, 59 * others will lock up. 60 */ 61 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ 62 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ 63 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ 64 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ 65 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ 66 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ 67 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */ 68 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */ 69 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ 70 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ 71 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ 72 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ 73 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ 74 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ 75 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ 76 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ 77 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ 78 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ 79 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ 80 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ 81 /* 82 * The following causes a failed REQUEST SENSE on lun 1 for 83 * aha152x controller, which causes SCSI code to reset bus. 84 */ 85 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, 86 /* 87 * The following causes a failed REQUEST SENSE on lun 1 for 88 * aha152x controller, which causes SCSI code to reset bus. 89 */ 90 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, 91 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ 92 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ 93 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, 94 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, 95 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, 96 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, 97 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, 98 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ 99 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ 100 /* 101 * The following causes a failed REQUEST SENSE on lun 1 for 102 * seagate controller, which causes SCSI code to reset bus. 103 */ 104 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, 105 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ 106 /* 107 * The following causes a failed REQUEST SENSE on lun 1 for 108 * seagate controller, which causes SCSI code to reset bus. 109 */ 110 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ 111 {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */ 112 {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */ 113 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ 114 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ 115 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ 116 {"NEC", "D3856", "0009", BLIST_NOLUN}, 117 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ 118 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ 119 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ 120 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ 121 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ 122 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN}, 123 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, 124 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ 125 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ 126 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ 127 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ 128 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ 129 130 /* 131 * Other types of devices that have special flags. 132 * Note that all USB devices should have the BLIST_INQUIRY_36 flag. 133 */ 134 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, 135 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, 136 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, 137 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 138 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 139 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, 140 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 141 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 142 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 143 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 144 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 145 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 146 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 147 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 148 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 149 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 150 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 151 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 152 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 153 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 154 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 155 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 156 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 157 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 158 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 159 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 160 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ 161 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ 162 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 163 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, 164 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 165 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 166 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 167 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 168 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 169 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 170 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 171 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 172 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 173 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 174 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 175 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 177 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 178 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 179 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 180 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 181 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 182 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 183 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 184 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 185 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 186 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 187 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 188 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 189 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 190 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 192 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 193 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 194 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 195 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 196 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 197 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 198 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 199 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 200 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 201 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 202 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 203 {"INSITE", "I325VM", NULL, BLIST_KEY}, 204 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 205 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 206 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 207 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 208 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 209 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 210 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 211 {"MICROP", "4110", NULL, BLIST_NOTQ}, 212 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 213 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 214 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 216 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 218 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 223 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 224 {"Promise", "", NULL, BLIST_SPARSELUN}, 225 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 226 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 227 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 228 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 229 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 230 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 231 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 232 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 233 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 234 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 235 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 236 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 238 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 239 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 240 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 241 {"SUN", "T300", "*", BLIST_SPARSELUN}, 242 {"SUN", "T4", "*", BLIST_SPARSELUN}, 243 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 244 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 245 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 246 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 247 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 248 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 249 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 250 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 251 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 252 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 253 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 254 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 255 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 256 { NULL, NULL, NULL, 0 }, 257 }; 258 259 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 260 { 261 struct scsi_dev_info_list_table *devinfo_table; 262 int found = 0; 263 264 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 265 if (devinfo_table->key == key) { 266 found = 1; 267 break; 268 } 269 if (!found) 270 return ERR_PTR(-EINVAL); 271 272 return devinfo_table; 273 } 274 275 /* 276 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 277 * devinfo vendor and model strings. 278 */ 279 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 280 char *from, int compatible) 281 { 282 size_t from_length; 283 284 from_length = strlen(from); 285 strncpy(to, from, min(to_length, from_length)); 286 if (from_length < to_length) { 287 if (compatible) { 288 /* 289 * NUL terminate the string if it is short. 290 */ 291 to[from_length] = '\0'; 292 } else { 293 /* 294 * space pad the string if it is short. 295 */ 296 strncpy(&to[from_length], spaces, 297 to_length - from_length); 298 } 299 } 300 if (from_length > to_length) 301 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 302 __func__, name, from); 303 } 304 305 /** 306 * scsi_dev_info_list_add - add one dev_info list entry. 307 * @compatible: if true, null terminate short strings. Otherwise space pad. 308 * @vendor: vendor string 309 * @model: model (product) string 310 * @strflags: integer string 311 * @flags: if strflags NULL, use this flag value 312 * 313 * Description: 314 * Create and add one dev_info entry for @vendor, @model, @strflags or 315 * @flag. If @compatible, add to the tail of the list, do not space 316 * pad, and set devinfo->compatible. The scsi_static_device_list entries 317 * are added with @compatible 1 and @clfags NULL. 318 * 319 * Returns: 0 OK, -error on failure. 320 **/ 321 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 322 char *strflags, int flags) 323 { 324 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 325 strflags, flags, 326 SCSI_DEVINFO_GLOBAL); 327 } 328 329 /** 330 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 331 * @compatible: if true, null terminate short strings. Otherwise space pad. 332 * @vendor: vendor string 333 * @model: model (product) string 334 * @strflags: integer string 335 * @flags: if strflags NULL, use this flag value 336 * @key: specify list to use 337 * 338 * Description: 339 * Create and add one dev_info entry for @vendor, @model, 340 * @strflags or @flag in list specified by @key. If @compatible, 341 * add to the tail of the list, do not space pad, and set 342 * devinfo->compatible. The scsi_static_device_list entries are 343 * added with @compatible 1 and @clfags NULL. 344 * 345 * Returns: 0 OK, -error on failure. 346 **/ 347 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 348 char *strflags, int flags, int key) 349 { 350 struct scsi_dev_info_list *devinfo; 351 struct scsi_dev_info_list_table *devinfo_table = 352 scsi_devinfo_lookup_by_key(key); 353 354 if (IS_ERR(devinfo_table)) 355 return PTR_ERR(devinfo_table); 356 357 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 358 if (!devinfo) { 359 printk(KERN_ERR "%s: no memory\n", __func__); 360 return -ENOMEM; 361 } 362 363 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 364 vendor, compatible); 365 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 366 model, compatible); 367 368 if (strflags) 369 devinfo->flags = simple_strtoul(strflags, NULL, 0); 370 else 371 devinfo->flags = flags; 372 373 devinfo->compatible = compatible; 374 375 if (compatible) 376 list_add_tail(&devinfo->dev_info_list, 377 &devinfo_table->scsi_dev_info_list); 378 else 379 list_add(&devinfo->dev_info_list, 380 &devinfo_table->scsi_dev_info_list); 381 382 return 0; 383 } 384 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 385 386 /** 387 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 388 * @vendor: vendor string 389 * @model: model (product) string 390 * @key: specify list to use 391 * 392 * Description: 393 * Remove and destroy one dev_info entry for @vendor, @model 394 * in list specified by @key. 395 * 396 * Returns: 0 OK, -error on failure. 397 **/ 398 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 399 { 400 struct scsi_dev_info_list *devinfo, *found = NULL; 401 struct scsi_dev_info_list_table *devinfo_table = 402 scsi_devinfo_lookup_by_key(key); 403 404 if (IS_ERR(devinfo_table)) 405 return PTR_ERR(devinfo_table); 406 407 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 408 dev_info_list) { 409 if (devinfo->compatible) { 410 /* 411 * Behave like the older version of get_device_flags. 412 */ 413 size_t max; 414 /* 415 * XXX why skip leading spaces? If an odd INQUIRY 416 * value, that should have been part of the 417 * scsi_static_device_list[] entry, such as " FOO" 418 * rather than "FOO". Since this code is already 419 * here, and we don't know what device it is 420 * trying to work with, leave it as-is. 421 */ 422 max = 8; /* max length of vendor */ 423 while ((max > 0) && *vendor == ' ') { 424 max--; 425 vendor++; 426 } 427 /* 428 * XXX removing the following strlen() would be 429 * good, using it means that for a an entry not in 430 * the list, we scan every byte of every vendor 431 * listed in scsi_static_device_list[], and never match 432 * a single one (and still have to compare at 433 * least the first byte of each vendor). 434 */ 435 if (memcmp(devinfo->vendor, vendor, 436 min(max, strlen(devinfo->vendor)))) 437 continue; 438 /* 439 * Skip spaces again. 440 */ 441 max = 16; /* max length of model */ 442 while ((max > 0) && *model == ' ') { 443 max--; 444 model++; 445 } 446 if (memcmp(devinfo->model, model, 447 min(max, strlen(devinfo->model)))) 448 continue; 449 found = devinfo; 450 } else { 451 if (!memcmp(devinfo->vendor, vendor, 452 sizeof(devinfo->vendor)) && 453 !memcmp(devinfo->model, model, 454 sizeof(devinfo->model))) 455 found = devinfo; 456 } 457 if (found) 458 break; 459 } 460 461 if (found) { 462 list_del(&found->dev_info_list); 463 kfree(found); 464 return 0; 465 } 466 467 return -ENOENT; 468 } 469 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 470 471 /** 472 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 473 * @dev_list: string of device flags to add 474 * 475 * Description: 476 * Parse dev_list, and add entries to the scsi_dev_info_list. 477 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 478 * dev_list is modified via strsep. Can be called for command line 479 * addition, for proc or mabye a sysfs interface. 480 * 481 * Returns: 0 if OK, -error on failure. 482 **/ 483 static int scsi_dev_info_list_add_str(char *dev_list) 484 { 485 char *vendor, *model, *strflags, *next; 486 char *next_check; 487 int res = 0; 488 489 next = dev_list; 490 if (next && next[0] == '"') { 491 /* 492 * Ignore both the leading and trailing quote. 493 */ 494 next++; 495 next_check = ",\""; 496 } else { 497 next_check = ","; 498 } 499 500 /* 501 * For the leading and trailing '"' case, the for loop comes 502 * through the last time with vendor[0] == '\0'. 503 */ 504 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 505 && (res == 0); vendor = strsep(&next, ":")) { 506 strflags = NULL; 507 model = strsep(&next, ":"); 508 if (model) 509 strflags = strsep(&next, next_check); 510 if (!model || !strflags) { 511 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 512 " '%s'\n", __func__, vendor, model, 513 strflags); 514 res = -EINVAL; 515 } else 516 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 517 model, strflags, 0); 518 } 519 return res; 520 } 521 522 /** 523 * get_device_flags - get device specific flags from the dynamic device list. 524 * @sdev: &scsi_device to get flags for 525 * @vendor: vendor name 526 * @model: model name 527 * 528 * Description: 529 * Search the global scsi_dev_info_list (specified by list zero) 530 * for an entry matching @vendor and @model, if found, return the 531 * matching flags value, else return the host or global default 532 * settings. Called during scan time. 533 **/ 534 int scsi_get_device_flags(struct scsi_device *sdev, 535 const unsigned char *vendor, 536 const unsigned char *model) 537 { 538 return scsi_get_device_flags_keyed(sdev, vendor, model, 539 SCSI_DEVINFO_GLOBAL); 540 } 541 542 543 /** 544 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 545 * @sdev: &scsi_device to get flags for 546 * @vendor: vendor name 547 * @model: model name 548 * @key: list to look up 549 * 550 * Description: 551 * Search the scsi_dev_info_list specified by @key for an entry 552 * matching @vendor and @model, if found, return the matching 553 * flags value, else return the host or global default settings. 554 * Called during scan time. 555 **/ 556 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 557 const unsigned char *vendor, 558 const unsigned char *model, 559 int key) 560 { 561 struct scsi_dev_info_list *devinfo; 562 struct scsi_dev_info_list_table *devinfo_table; 563 564 devinfo_table = scsi_devinfo_lookup_by_key(key); 565 566 if (IS_ERR(devinfo_table)) 567 return PTR_ERR(devinfo_table); 568 569 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 570 dev_info_list) { 571 if (devinfo->compatible) { 572 /* 573 * Behave like the older version of get_device_flags. 574 */ 575 size_t max; 576 /* 577 * XXX why skip leading spaces? If an odd INQUIRY 578 * value, that should have been part of the 579 * scsi_static_device_list[] entry, such as " FOO" 580 * rather than "FOO". Since this code is already 581 * here, and we don't know what device it is 582 * trying to work with, leave it as-is. 583 */ 584 max = 8; /* max length of vendor */ 585 while ((max > 0) && *vendor == ' ') { 586 max--; 587 vendor++; 588 } 589 /* 590 * XXX removing the following strlen() would be 591 * good, using it means that for a an entry not in 592 * the list, we scan every byte of every vendor 593 * listed in scsi_static_device_list[], and never match 594 * a single one (and still have to compare at 595 * least the first byte of each vendor). 596 */ 597 if (memcmp(devinfo->vendor, vendor, 598 min(max, strlen(devinfo->vendor)))) 599 continue; 600 /* 601 * Skip spaces again. 602 */ 603 max = 16; /* max length of model */ 604 while ((max > 0) && *model == ' ') { 605 max--; 606 model++; 607 } 608 if (memcmp(devinfo->model, model, 609 min(max, strlen(devinfo->model)))) 610 continue; 611 return devinfo->flags; 612 } else { 613 if (!memcmp(devinfo->vendor, vendor, 614 sizeof(devinfo->vendor)) && 615 !memcmp(devinfo->model, model, 616 sizeof(devinfo->model))) 617 return devinfo->flags; 618 } 619 } 620 /* nothing found, return nothing */ 621 if (key != SCSI_DEVINFO_GLOBAL) 622 return 0; 623 624 /* except for the global list, where we have an exception */ 625 if (sdev->sdev_bflags) 626 return sdev->sdev_bflags; 627 628 return scsi_default_dev_flags; 629 } 630 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 631 632 #ifdef CONFIG_SCSI_PROC_FS 633 struct double_list { 634 struct list_head *top; 635 struct list_head *bottom; 636 }; 637 638 static int devinfo_seq_show(struct seq_file *m, void *v) 639 { 640 struct double_list *dl = v; 641 struct scsi_dev_info_list_table *devinfo_table = 642 list_entry(dl->top, struct scsi_dev_info_list_table, node); 643 struct scsi_dev_info_list *devinfo = 644 list_entry(dl->bottom, struct scsi_dev_info_list, 645 dev_info_list); 646 647 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 648 devinfo_table->name) 649 seq_printf(m, "[%s]:\n", devinfo_table->name); 650 651 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 652 devinfo->vendor, devinfo->model, devinfo->flags); 653 return 0; 654 } 655 656 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 657 { 658 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 659 loff_t pos = *ppos; 660 661 if (!dl) 662 return NULL; 663 664 list_for_each(dl->top, &scsi_dev_info_list) { 665 struct scsi_dev_info_list_table *devinfo_table = 666 list_entry(dl->top, struct scsi_dev_info_list_table, 667 node); 668 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 669 if (pos-- == 0) 670 return dl; 671 } 672 673 kfree(dl); 674 return NULL; 675 } 676 677 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 678 { 679 struct double_list *dl = v; 680 struct scsi_dev_info_list_table *devinfo_table = 681 list_entry(dl->top, struct scsi_dev_info_list_table, node); 682 683 ++*ppos; 684 dl->bottom = dl->bottom->next; 685 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 686 dl->top = dl->top->next; 687 if (dl->top == &scsi_dev_info_list) { 688 kfree(dl); 689 return NULL; 690 } 691 devinfo_table = list_entry(dl->top, 692 struct scsi_dev_info_list_table, 693 node); 694 dl->bottom = devinfo_table->scsi_dev_info_list.next; 695 } 696 697 return dl; 698 } 699 700 static void devinfo_seq_stop(struct seq_file *m, void *v) 701 { 702 kfree(v); 703 } 704 705 static const struct seq_operations scsi_devinfo_seq_ops = { 706 .start = devinfo_seq_start, 707 .next = devinfo_seq_next, 708 .stop = devinfo_seq_stop, 709 .show = devinfo_seq_show, 710 }; 711 712 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 713 { 714 return seq_open(file, &scsi_devinfo_seq_ops); 715 } 716 717 /* 718 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 719 * 720 * Description: Adds a black/white list entry for vendor and model with an 721 * integer value of flag to the scsi device info list. 722 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 723 */ 724 static ssize_t proc_scsi_devinfo_write(struct file *file, 725 const char __user *buf, 726 size_t length, loff_t *ppos) 727 { 728 char *buffer; 729 ssize_t err = length; 730 731 if (!buf || length>PAGE_SIZE) 732 return -EINVAL; 733 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 734 return -ENOMEM; 735 if (copy_from_user(buffer, buf, length)) { 736 err =-EFAULT; 737 goto out; 738 } 739 740 if (length < PAGE_SIZE) 741 buffer[length] = '\0'; 742 else if (buffer[PAGE_SIZE-1]) { 743 err = -EINVAL; 744 goto out; 745 } 746 747 scsi_dev_info_list_add_str(buffer); 748 749 out: 750 free_page((unsigned long)buffer); 751 return err; 752 } 753 754 static const struct file_operations scsi_devinfo_proc_fops = { 755 .owner = THIS_MODULE, 756 .open = proc_scsi_devinfo_open, 757 .read = seq_read, 758 .write = proc_scsi_devinfo_write, 759 .llseek = seq_lseek, 760 .release = seq_release, 761 }; 762 #endif /* CONFIG_SCSI_PROC_FS */ 763 764 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 765 MODULE_PARM_DESC(dev_flags, 766 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 767 " list entries for vendor and model with an integer value of flags" 768 " to the scsi device info list"); 769 770 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 771 MODULE_PARM_DESC(default_dev_flags, 772 "scsi default device flag integer value"); 773 774 /** 775 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 776 **/ 777 void scsi_exit_devinfo(void) 778 { 779 #ifdef CONFIG_SCSI_PROC_FS 780 remove_proc_entry("scsi/device_info", NULL); 781 #endif 782 783 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 784 } 785 786 /** 787 * scsi_dev_info_add_list - add a new devinfo list 788 * @key: key of the list to add 789 * @name: Name of the list to add (for /proc/scsi/device_info) 790 * 791 * Adds the requested list, returns zero on success, -EEXIST if the 792 * key is already registered to a list, or other error on failure. 793 */ 794 int scsi_dev_info_add_list(int key, const char *name) 795 { 796 struct scsi_dev_info_list_table *devinfo_table = 797 scsi_devinfo_lookup_by_key(key); 798 799 if (!IS_ERR(devinfo_table)) 800 /* list already exists */ 801 return -EEXIST; 802 803 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 804 805 if (!devinfo_table) 806 return -ENOMEM; 807 808 INIT_LIST_HEAD(&devinfo_table->node); 809 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 810 devinfo_table->name = name; 811 devinfo_table->key = key; 812 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 813 814 return 0; 815 } 816 EXPORT_SYMBOL(scsi_dev_info_add_list); 817 818 /** 819 * scsi_dev_info_remove_list - destroy an added devinfo list 820 * @key: key of the list to destroy 821 * 822 * Iterates over the entire list first, freeing all the values, then 823 * frees the list itself. Returns 0 on success or -EINVAL if the key 824 * can't be found. 825 */ 826 int scsi_dev_info_remove_list(int key) 827 { 828 struct list_head *lh, *lh_next; 829 struct scsi_dev_info_list_table *devinfo_table = 830 scsi_devinfo_lookup_by_key(key); 831 832 if (IS_ERR(devinfo_table)) 833 /* no such list */ 834 return -EINVAL; 835 836 /* remove from the master list */ 837 list_del(&devinfo_table->node); 838 839 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 840 struct scsi_dev_info_list *devinfo; 841 842 devinfo = list_entry(lh, struct scsi_dev_info_list, 843 dev_info_list); 844 kfree(devinfo); 845 } 846 kfree(devinfo_table); 847 848 return 0; 849 } 850 EXPORT_SYMBOL(scsi_dev_info_remove_list); 851 852 /** 853 * scsi_init_devinfo - set up the dynamic device list. 854 * 855 * Description: 856 * Add command line entries from scsi_dev_flags, then add 857 * scsi_static_device_list entries to the scsi device info list. 858 */ 859 int __init scsi_init_devinfo(void) 860 { 861 #ifdef CONFIG_SCSI_PROC_FS 862 struct proc_dir_entry *p; 863 #endif 864 int error, i; 865 866 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 867 if (error) 868 return error; 869 870 error = scsi_dev_info_list_add_str(scsi_dev_flags); 871 if (error) 872 goto out; 873 874 for (i = 0; scsi_static_device_list[i].vendor; i++) { 875 error = scsi_dev_info_list_add(1 /* compatibile */, 876 scsi_static_device_list[i].vendor, 877 scsi_static_device_list[i].model, 878 NULL, 879 scsi_static_device_list[i].flags); 880 if (error) 881 goto out; 882 } 883 884 #ifdef CONFIG_SCSI_PROC_FS 885 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 886 if (!p) { 887 error = -ENOMEM; 888 goto out; 889 } 890 #endif /* CONFIG_SCSI_PROC_FS */ 891 892 out: 893 if (error) 894 scsi_exit_devinfo(); 895 return error; 896 } 897