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", "HUS1530", "*", BLIST_NO_DIF}, 176 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, 177 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 178 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 179 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 180 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 181 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 182 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 183 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 184 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 185 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 186 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 187 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 188 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 189 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 190 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 192 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 193 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 194 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 195 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 196 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 197 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 198 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 199 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 200 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 201 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 202 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 203 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 204 {"INSITE", "I325VM", NULL, BLIST_KEY}, 205 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 206 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 207 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 208 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 209 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 210 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 211 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 212 {"MICROP", "4110", NULL, BLIST_NOTQ}, 213 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 214 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 215 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 216 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 219 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 223 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 224 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 225 {"Promise", "", NULL, BLIST_SPARSELUN}, 226 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 227 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 228 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 229 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 230 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 231 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 232 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 233 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 234 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 235 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 236 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 239 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 240 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 241 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 242 {"SUN", "T300", "*", BLIST_SPARSELUN}, 243 {"SUN", "T4", "*", BLIST_SPARSELUN}, 244 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 245 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 246 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 247 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 248 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 249 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 250 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 251 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 252 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 253 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 254 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 255 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 256 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 257 { NULL, NULL, NULL, 0 }, 258 }; 259 260 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 261 { 262 struct scsi_dev_info_list_table *devinfo_table; 263 int found = 0; 264 265 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 266 if (devinfo_table->key == key) { 267 found = 1; 268 break; 269 } 270 if (!found) 271 return ERR_PTR(-EINVAL); 272 273 return devinfo_table; 274 } 275 276 /* 277 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 278 * devinfo vendor and model strings. 279 */ 280 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 281 char *from, int compatible) 282 { 283 size_t from_length; 284 285 from_length = strlen(from); 286 strncpy(to, from, min(to_length, from_length)); 287 if (from_length < to_length) { 288 if (compatible) { 289 /* 290 * NUL terminate the string if it is short. 291 */ 292 to[from_length] = '\0'; 293 } else { 294 /* 295 * space pad the string if it is short. 296 */ 297 strncpy(&to[from_length], spaces, 298 to_length - from_length); 299 } 300 } 301 if (from_length > to_length) 302 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 303 __func__, name, from); 304 } 305 306 /** 307 * scsi_dev_info_list_add - add one dev_info list entry. 308 * @compatible: if true, null terminate short strings. Otherwise space pad. 309 * @vendor: vendor string 310 * @model: model (product) string 311 * @strflags: integer string 312 * @flags: if strflags NULL, use this flag value 313 * 314 * Description: 315 * Create and add one dev_info entry for @vendor, @model, @strflags or 316 * @flag. If @compatible, add to the tail of the list, do not space 317 * pad, and set devinfo->compatible. The scsi_static_device_list entries 318 * are added with @compatible 1 and @clfags NULL. 319 * 320 * Returns: 0 OK, -error on failure. 321 **/ 322 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 323 char *strflags, int flags) 324 { 325 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 326 strflags, flags, 327 SCSI_DEVINFO_GLOBAL); 328 } 329 330 /** 331 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 332 * @compatible: if true, null terminate short strings. Otherwise space pad. 333 * @vendor: vendor string 334 * @model: model (product) string 335 * @strflags: integer string 336 * @flags: if strflags NULL, use this flag value 337 * @key: specify list to use 338 * 339 * Description: 340 * Create and add one dev_info entry for @vendor, @model, 341 * @strflags or @flag in list specified by @key. If @compatible, 342 * add to the tail of the list, do not space pad, and set 343 * devinfo->compatible. The scsi_static_device_list entries are 344 * added with @compatible 1 and @clfags NULL. 345 * 346 * Returns: 0 OK, -error on failure. 347 **/ 348 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 349 char *strflags, int flags, int key) 350 { 351 struct scsi_dev_info_list *devinfo; 352 struct scsi_dev_info_list_table *devinfo_table = 353 scsi_devinfo_lookup_by_key(key); 354 355 if (IS_ERR(devinfo_table)) 356 return PTR_ERR(devinfo_table); 357 358 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 359 if (!devinfo) { 360 printk(KERN_ERR "%s: no memory\n", __func__); 361 return -ENOMEM; 362 } 363 364 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 365 vendor, compatible); 366 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 367 model, compatible); 368 369 if (strflags) 370 devinfo->flags = simple_strtoul(strflags, NULL, 0); 371 else 372 devinfo->flags = flags; 373 374 devinfo->compatible = compatible; 375 376 if (compatible) 377 list_add_tail(&devinfo->dev_info_list, 378 &devinfo_table->scsi_dev_info_list); 379 else 380 list_add(&devinfo->dev_info_list, 381 &devinfo_table->scsi_dev_info_list); 382 383 return 0; 384 } 385 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 386 387 /** 388 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 389 * @vendor: vendor string 390 * @model: model (product) string 391 * @key: specify list to use 392 * 393 * Description: 394 * Remove and destroy one dev_info entry for @vendor, @model 395 * in list specified by @key. 396 * 397 * Returns: 0 OK, -error on failure. 398 **/ 399 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 400 { 401 struct scsi_dev_info_list *devinfo, *found = NULL; 402 struct scsi_dev_info_list_table *devinfo_table = 403 scsi_devinfo_lookup_by_key(key); 404 405 if (IS_ERR(devinfo_table)) 406 return PTR_ERR(devinfo_table); 407 408 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 409 dev_info_list) { 410 if (devinfo->compatible) { 411 /* 412 * Behave like the older version of get_device_flags. 413 */ 414 size_t max; 415 /* 416 * XXX why skip leading spaces? If an odd INQUIRY 417 * value, that should have been part of the 418 * scsi_static_device_list[] entry, such as " FOO" 419 * rather than "FOO". Since this code is already 420 * here, and we don't know what device it is 421 * trying to work with, leave it as-is. 422 */ 423 max = 8; /* max length of vendor */ 424 while ((max > 0) && *vendor == ' ') { 425 max--; 426 vendor++; 427 } 428 /* 429 * XXX removing the following strlen() would be 430 * good, using it means that for a an entry not in 431 * the list, we scan every byte of every vendor 432 * listed in scsi_static_device_list[], and never match 433 * a single one (and still have to compare at 434 * least the first byte of each vendor). 435 */ 436 if (memcmp(devinfo->vendor, vendor, 437 min(max, strlen(devinfo->vendor)))) 438 continue; 439 /* 440 * Skip spaces again. 441 */ 442 max = 16; /* max length of model */ 443 while ((max > 0) && *model == ' ') { 444 max--; 445 model++; 446 } 447 if (memcmp(devinfo->model, model, 448 min(max, strlen(devinfo->model)))) 449 continue; 450 found = devinfo; 451 } else { 452 if (!memcmp(devinfo->vendor, vendor, 453 sizeof(devinfo->vendor)) && 454 !memcmp(devinfo->model, model, 455 sizeof(devinfo->model))) 456 found = devinfo; 457 } 458 if (found) 459 break; 460 } 461 462 if (found) { 463 list_del(&found->dev_info_list); 464 kfree(found); 465 return 0; 466 } 467 468 return -ENOENT; 469 } 470 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 471 472 /** 473 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 474 * @dev_list: string of device flags to add 475 * 476 * Description: 477 * Parse dev_list, and add entries to the scsi_dev_info_list. 478 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 479 * dev_list is modified via strsep. Can be called for command line 480 * addition, for proc or mabye a sysfs interface. 481 * 482 * Returns: 0 if OK, -error on failure. 483 **/ 484 static int scsi_dev_info_list_add_str(char *dev_list) 485 { 486 char *vendor, *model, *strflags, *next; 487 char *next_check; 488 int res = 0; 489 490 next = dev_list; 491 if (next && next[0] == '"') { 492 /* 493 * Ignore both the leading and trailing quote. 494 */ 495 next++; 496 next_check = ",\""; 497 } else { 498 next_check = ","; 499 } 500 501 /* 502 * For the leading and trailing '"' case, the for loop comes 503 * through the last time with vendor[0] == '\0'. 504 */ 505 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 506 && (res == 0); vendor = strsep(&next, ":")) { 507 strflags = NULL; 508 model = strsep(&next, ":"); 509 if (model) 510 strflags = strsep(&next, next_check); 511 if (!model || !strflags) { 512 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 513 " '%s'\n", __func__, vendor, model, 514 strflags); 515 res = -EINVAL; 516 } else 517 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 518 model, strflags, 0); 519 } 520 return res; 521 } 522 523 /** 524 * get_device_flags - get device specific flags from the dynamic device list. 525 * @sdev: &scsi_device to get flags for 526 * @vendor: vendor name 527 * @model: model name 528 * 529 * Description: 530 * Search the global scsi_dev_info_list (specified by list zero) 531 * for an entry matching @vendor and @model, if found, return the 532 * matching flags value, else return the host or global default 533 * settings. Called during scan time. 534 **/ 535 int scsi_get_device_flags(struct scsi_device *sdev, 536 const unsigned char *vendor, 537 const unsigned char *model) 538 { 539 return scsi_get_device_flags_keyed(sdev, vendor, model, 540 SCSI_DEVINFO_GLOBAL); 541 } 542 543 544 /** 545 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 546 * @sdev: &scsi_device to get flags for 547 * @vendor: vendor name 548 * @model: model name 549 * @key: list to look up 550 * 551 * Description: 552 * Search the scsi_dev_info_list specified by @key for an entry 553 * matching @vendor and @model, if found, return the matching 554 * flags value, else return the host or global default settings. 555 * Called during scan time. 556 **/ 557 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 558 const unsigned char *vendor, 559 const unsigned char *model, 560 int key) 561 { 562 struct scsi_dev_info_list *devinfo; 563 struct scsi_dev_info_list_table *devinfo_table; 564 565 devinfo_table = scsi_devinfo_lookup_by_key(key); 566 567 if (IS_ERR(devinfo_table)) 568 return PTR_ERR(devinfo_table); 569 570 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 571 dev_info_list) { 572 if (devinfo->compatible) { 573 /* 574 * Behave like the older version of get_device_flags. 575 */ 576 size_t max; 577 /* 578 * XXX why skip leading spaces? If an odd INQUIRY 579 * value, that should have been part of the 580 * scsi_static_device_list[] entry, such as " FOO" 581 * rather than "FOO". Since this code is already 582 * here, and we don't know what device it is 583 * trying to work with, leave it as-is. 584 */ 585 max = 8; /* max length of vendor */ 586 while ((max > 0) && *vendor == ' ') { 587 max--; 588 vendor++; 589 } 590 /* 591 * XXX removing the following strlen() would be 592 * good, using it means that for a an entry not in 593 * the list, we scan every byte of every vendor 594 * listed in scsi_static_device_list[], and never match 595 * a single one (and still have to compare at 596 * least the first byte of each vendor). 597 */ 598 if (memcmp(devinfo->vendor, vendor, 599 min(max, strlen(devinfo->vendor)))) 600 continue; 601 /* 602 * Skip spaces again. 603 */ 604 max = 16; /* max length of model */ 605 while ((max > 0) && *model == ' ') { 606 max--; 607 model++; 608 } 609 if (memcmp(devinfo->model, model, 610 min(max, strlen(devinfo->model)))) 611 continue; 612 return devinfo->flags; 613 } else { 614 if (!memcmp(devinfo->vendor, vendor, 615 sizeof(devinfo->vendor)) && 616 !memcmp(devinfo->model, model, 617 sizeof(devinfo->model))) 618 return devinfo->flags; 619 } 620 } 621 /* nothing found, return nothing */ 622 if (key != SCSI_DEVINFO_GLOBAL) 623 return 0; 624 625 /* except for the global list, where we have an exception */ 626 if (sdev->sdev_bflags) 627 return sdev->sdev_bflags; 628 629 return scsi_default_dev_flags; 630 } 631 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 632 633 #ifdef CONFIG_SCSI_PROC_FS 634 struct double_list { 635 struct list_head *top; 636 struct list_head *bottom; 637 }; 638 639 static int devinfo_seq_show(struct seq_file *m, void *v) 640 { 641 struct double_list *dl = v; 642 struct scsi_dev_info_list_table *devinfo_table = 643 list_entry(dl->top, struct scsi_dev_info_list_table, node); 644 struct scsi_dev_info_list *devinfo = 645 list_entry(dl->bottom, struct scsi_dev_info_list, 646 dev_info_list); 647 648 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 649 devinfo_table->name) 650 seq_printf(m, "[%s]:\n", devinfo_table->name); 651 652 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 653 devinfo->vendor, devinfo->model, devinfo->flags); 654 return 0; 655 } 656 657 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 658 { 659 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 660 loff_t pos = *ppos; 661 662 if (!dl) 663 return NULL; 664 665 list_for_each(dl->top, &scsi_dev_info_list) { 666 struct scsi_dev_info_list_table *devinfo_table = 667 list_entry(dl->top, struct scsi_dev_info_list_table, 668 node); 669 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 670 if (pos-- == 0) 671 return dl; 672 } 673 674 kfree(dl); 675 return NULL; 676 } 677 678 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 679 { 680 struct double_list *dl = v; 681 struct scsi_dev_info_list_table *devinfo_table = 682 list_entry(dl->top, struct scsi_dev_info_list_table, node); 683 684 ++*ppos; 685 dl->bottom = dl->bottom->next; 686 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 687 dl->top = dl->top->next; 688 if (dl->top == &scsi_dev_info_list) { 689 kfree(dl); 690 return NULL; 691 } 692 devinfo_table = list_entry(dl->top, 693 struct scsi_dev_info_list_table, 694 node); 695 dl->bottom = devinfo_table->scsi_dev_info_list.next; 696 } 697 698 return dl; 699 } 700 701 static void devinfo_seq_stop(struct seq_file *m, void *v) 702 { 703 kfree(v); 704 } 705 706 static const struct seq_operations scsi_devinfo_seq_ops = { 707 .start = devinfo_seq_start, 708 .next = devinfo_seq_next, 709 .stop = devinfo_seq_stop, 710 .show = devinfo_seq_show, 711 }; 712 713 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 714 { 715 return seq_open(file, &scsi_devinfo_seq_ops); 716 } 717 718 /* 719 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 720 * 721 * Description: Adds a black/white list entry for vendor and model with an 722 * integer value of flag to the scsi device info list. 723 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 724 */ 725 static ssize_t proc_scsi_devinfo_write(struct file *file, 726 const char __user *buf, 727 size_t length, loff_t *ppos) 728 { 729 char *buffer; 730 ssize_t err = length; 731 732 if (!buf || length>PAGE_SIZE) 733 return -EINVAL; 734 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 735 return -ENOMEM; 736 if (copy_from_user(buffer, buf, length)) { 737 err =-EFAULT; 738 goto out; 739 } 740 741 if (length < PAGE_SIZE) 742 buffer[length] = '\0'; 743 else if (buffer[PAGE_SIZE-1]) { 744 err = -EINVAL; 745 goto out; 746 } 747 748 scsi_dev_info_list_add_str(buffer); 749 750 out: 751 free_page((unsigned long)buffer); 752 return err; 753 } 754 755 static const struct file_operations scsi_devinfo_proc_fops = { 756 .owner = THIS_MODULE, 757 .open = proc_scsi_devinfo_open, 758 .read = seq_read, 759 .write = proc_scsi_devinfo_write, 760 .llseek = seq_lseek, 761 .release = seq_release, 762 }; 763 #endif /* CONFIG_SCSI_PROC_FS */ 764 765 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 766 MODULE_PARM_DESC(dev_flags, 767 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 768 " list entries for vendor and model with an integer value of flags" 769 " to the scsi device info list"); 770 771 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 772 MODULE_PARM_DESC(default_dev_flags, 773 "scsi default device flag integer value"); 774 775 /** 776 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 777 **/ 778 void scsi_exit_devinfo(void) 779 { 780 #ifdef CONFIG_SCSI_PROC_FS 781 remove_proc_entry("scsi/device_info", NULL); 782 #endif 783 784 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 785 } 786 787 /** 788 * scsi_dev_info_add_list - add a new devinfo list 789 * @key: key of the list to add 790 * @name: Name of the list to add (for /proc/scsi/device_info) 791 * 792 * Adds the requested list, returns zero on success, -EEXIST if the 793 * key is already registered to a list, or other error on failure. 794 */ 795 int scsi_dev_info_add_list(int key, const char *name) 796 { 797 struct scsi_dev_info_list_table *devinfo_table = 798 scsi_devinfo_lookup_by_key(key); 799 800 if (!IS_ERR(devinfo_table)) 801 /* list already exists */ 802 return -EEXIST; 803 804 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 805 806 if (!devinfo_table) 807 return -ENOMEM; 808 809 INIT_LIST_HEAD(&devinfo_table->node); 810 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 811 devinfo_table->name = name; 812 devinfo_table->key = key; 813 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 814 815 return 0; 816 } 817 EXPORT_SYMBOL(scsi_dev_info_add_list); 818 819 /** 820 * scsi_dev_info_remove_list - destroy an added devinfo list 821 * @key: key of the list to destroy 822 * 823 * Iterates over the entire list first, freeing all the values, then 824 * frees the list itself. Returns 0 on success or -EINVAL if the key 825 * can't be found. 826 */ 827 int scsi_dev_info_remove_list(int key) 828 { 829 struct list_head *lh, *lh_next; 830 struct scsi_dev_info_list_table *devinfo_table = 831 scsi_devinfo_lookup_by_key(key); 832 833 if (IS_ERR(devinfo_table)) 834 /* no such list */ 835 return -EINVAL; 836 837 /* remove from the master list */ 838 list_del(&devinfo_table->node); 839 840 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 841 struct scsi_dev_info_list *devinfo; 842 843 devinfo = list_entry(lh, struct scsi_dev_info_list, 844 dev_info_list); 845 kfree(devinfo); 846 } 847 kfree(devinfo_table); 848 849 return 0; 850 } 851 EXPORT_SYMBOL(scsi_dev_info_remove_list); 852 853 /** 854 * scsi_init_devinfo - set up the dynamic device list. 855 * 856 * Description: 857 * Add command line entries from scsi_dev_flags, then add 858 * scsi_static_device_list entries to the scsi device info list. 859 */ 860 int __init scsi_init_devinfo(void) 861 { 862 #ifdef CONFIG_SCSI_PROC_FS 863 struct proc_dir_entry *p; 864 #endif 865 int error, i; 866 867 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 868 if (error) 869 return error; 870 871 error = scsi_dev_info_list_add_str(scsi_dev_flags); 872 if (error) 873 goto out; 874 875 for (i = 0; scsi_static_device_list[i].vendor; i++) { 876 error = scsi_dev_info_list_add(1 /* compatibile */, 877 scsi_static_device_list[i].vendor, 878 scsi_static_device_list[i].model, 879 NULL, 880 scsi_static_device_list[i].flags); 881 if (error) 882 goto out; 883 } 884 885 #ifdef CONFIG_SCSI_PROC_FS 886 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 887 if (!p) { 888 error = -ENOMEM; 889 goto out; 890 } 891 #endif /* CONFIG_SCSI_PROC_FS */ 892 893 out: 894 if (error) 895 scsi_exit_devinfo(); 896 return error; 897 } 898