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 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 206 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 207 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 208 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 209 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 210 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 211 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 212 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 213 {"MICROP", "4110", NULL, BLIST_NOTQ}, 214 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC}, 215 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 216 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 217 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 221 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 223 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 224 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 225 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 226 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 227 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 228 {"Promise", "", NULL, BLIST_SPARSELUN}, 229 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 230 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 231 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 232 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 233 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 234 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 235 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 236 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 237 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 238 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 239 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 240 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 242 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 243 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 244 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 245 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 246 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 247 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 248 {"SUN", "T300", "*", BLIST_SPARSELUN}, 249 {"SUN", "T4", "*", BLIST_SPARSELUN}, 250 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 251 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 252 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 253 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 254 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 255 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 256 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 257 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 258 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 259 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 260 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 261 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 262 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 263 { NULL, NULL, NULL, 0 }, 264 }; 265 266 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 267 { 268 struct scsi_dev_info_list_table *devinfo_table; 269 int found = 0; 270 271 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 272 if (devinfo_table->key == key) { 273 found = 1; 274 break; 275 } 276 if (!found) 277 return ERR_PTR(-EINVAL); 278 279 return devinfo_table; 280 } 281 282 /* 283 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 284 * devinfo vendor and model strings. 285 */ 286 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 287 char *from, int compatible) 288 { 289 size_t from_length; 290 291 from_length = strlen(from); 292 strncpy(to, from, min(to_length, from_length)); 293 if (from_length < to_length) { 294 if (compatible) { 295 /* 296 * NUL terminate the string if it is short. 297 */ 298 to[from_length] = '\0'; 299 } else { 300 /* 301 * space pad the string if it is short. 302 */ 303 strncpy(&to[from_length], spaces, 304 to_length - from_length); 305 } 306 } 307 if (from_length > to_length) 308 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 309 __func__, name, from); 310 } 311 312 /** 313 * scsi_dev_info_list_add - add one dev_info list entry. 314 * @compatible: if true, null terminate short strings. Otherwise space pad. 315 * @vendor: vendor string 316 * @model: model (product) string 317 * @strflags: integer string 318 * @flags: if strflags NULL, use this flag value 319 * 320 * Description: 321 * Create and add one dev_info entry for @vendor, @model, @strflags or 322 * @flag. If @compatible, add to the tail of the list, do not space 323 * pad, and set devinfo->compatible. The scsi_static_device_list entries 324 * are added with @compatible 1 and @clfags NULL. 325 * 326 * Returns: 0 OK, -error on failure. 327 **/ 328 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 329 char *strflags, int flags) 330 { 331 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 332 strflags, flags, 333 SCSI_DEVINFO_GLOBAL); 334 } 335 336 /** 337 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 338 * @compatible: if true, null terminate short strings. Otherwise space pad. 339 * @vendor: vendor string 340 * @model: model (product) string 341 * @strflags: integer string 342 * @flags: if strflags NULL, use this flag value 343 * @key: specify list to use 344 * 345 * Description: 346 * Create and add one dev_info entry for @vendor, @model, 347 * @strflags or @flag in list specified by @key. If @compatible, 348 * add to the tail of the list, do not space pad, and set 349 * devinfo->compatible. The scsi_static_device_list entries are 350 * added with @compatible 1 and @clfags NULL. 351 * 352 * Returns: 0 OK, -error on failure. 353 **/ 354 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 355 char *strflags, int flags, int key) 356 { 357 struct scsi_dev_info_list *devinfo; 358 struct scsi_dev_info_list_table *devinfo_table = 359 scsi_devinfo_lookup_by_key(key); 360 361 if (IS_ERR(devinfo_table)) 362 return PTR_ERR(devinfo_table); 363 364 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 365 if (!devinfo) { 366 printk(KERN_ERR "%s: no memory\n", __func__); 367 return -ENOMEM; 368 } 369 370 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 371 vendor, compatible); 372 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 373 model, compatible); 374 375 if (strflags) 376 devinfo->flags = simple_strtoul(strflags, NULL, 0); 377 else 378 devinfo->flags = flags; 379 380 devinfo->compatible = compatible; 381 382 if (compatible) 383 list_add_tail(&devinfo->dev_info_list, 384 &devinfo_table->scsi_dev_info_list); 385 else 386 list_add(&devinfo->dev_info_list, 387 &devinfo_table->scsi_dev_info_list); 388 389 return 0; 390 } 391 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 392 393 /** 394 * scsi_dev_info_list_find - find a matching dev_info list entry. 395 * @vendor: vendor string 396 * @model: model (product) string 397 * @key: specify list to use 398 * 399 * Description: 400 * Finds the first dev_info entry matching @vendor, @model 401 * in list specified by @key. 402 * 403 * Returns: pointer to matching entry, or ERR_PTR on failure. 404 **/ 405 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 406 const char *model, int key) 407 { 408 struct scsi_dev_info_list *devinfo; 409 struct scsi_dev_info_list_table *devinfo_table = 410 scsi_devinfo_lookup_by_key(key); 411 size_t vmax, mmax; 412 const char *vskip, *mskip; 413 414 if (IS_ERR(devinfo_table)) 415 return (struct scsi_dev_info_list *) devinfo_table; 416 417 /* Prepare for "compatible" matches */ 418 419 /* 420 * XXX why skip leading spaces? If an odd INQUIRY 421 * value, that should have been part of the 422 * scsi_static_device_list[] entry, such as " FOO" 423 * rather than "FOO". Since this code is already 424 * here, and we don't know what device it is 425 * trying to work with, leave it as-is. 426 */ 427 vmax = 8; /* max length of vendor */ 428 vskip = vendor; 429 while (vmax > 0 && *vskip == ' ') { 430 vmax--; 431 vskip++; 432 } 433 /* Also skip trailing spaces */ 434 while (vmax > 0 && vskip[vmax - 1] == ' ') 435 --vmax; 436 437 mmax = 16; /* max length of model */ 438 mskip = model; 439 while (mmax > 0 && *mskip == ' ') { 440 mmax--; 441 mskip++; 442 } 443 while (mmax > 0 && mskip[mmax - 1] == ' ') 444 --mmax; 445 446 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 447 dev_info_list) { 448 if (devinfo->compatible) { 449 /* 450 * Behave like the older version of get_device_flags. 451 */ 452 if (memcmp(devinfo->vendor, vskip, vmax) || 453 devinfo->vendor[vmax]) 454 continue; 455 if (memcmp(devinfo->model, mskip, mmax) || 456 devinfo->model[mmax]) 457 continue; 458 return devinfo; 459 } else { 460 if (!memcmp(devinfo->vendor, vendor, 461 sizeof(devinfo->vendor)) && 462 !memcmp(devinfo->model, model, 463 sizeof(devinfo->model))) 464 return devinfo; 465 } 466 } 467 468 return ERR_PTR(-ENOENT); 469 } 470 471 /** 472 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 473 * @vendor: vendor string 474 * @model: model (product) string 475 * @key: specify list to use 476 * 477 * Description: 478 * Remove and destroy one dev_info entry for @vendor, @model 479 * in list specified by @key. 480 * 481 * Returns: 0 OK, -error on failure. 482 **/ 483 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 484 { 485 struct scsi_dev_info_list *found; 486 487 found = scsi_dev_info_list_find(vendor, model, key); 488 if (IS_ERR(found)) 489 return PTR_ERR(found); 490 491 list_del(&found->dev_info_list); 492 kfree(found); 493 return 0; 494 } 495 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 496 497 /** 498 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 499 * @dev_list: string of device flags to add 500 * 501 * Description: 502 * Parse dev_list, and add entries to the scsi_dev_info_list. 503 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 504 * dev_list is modified via strsep. Can be called for command line 505 * addition, for proc or mabye a sysfs interface. 506 * 507 * Returns: 0 if OK, -error on failure. 508 **/ 509 static int scsi_dev_info_list_add_str(char *dev_list) 510 { 511 char *vendor, *model, *strflags, *next; 512 char *next_check; 513 int res = 0; 514 515 next = dev_list; 516 if (next && next[0] == '"') { 517 /* 518 * Ignore both the leading and trailing quote. 519 */ 520 next++; 521 next_check = ",\""; 522 } else { 523 next_check = ","; 524 } 525 526 /* 527 * For the leading and trailing '"' case, the for loop comes 528 * through the last time with vendor[0] == '\0'. 529 */ 530 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 531 && (res == 0); vendor = strsep(&next, ":")) { 532 strflags = NULL; 533 model = strsep(&next, ":"); 534 if (model) 535 strflags = strsep(&next, next_check); 536 if (!model || !strflags) { 537 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 538 " '%s'\n", __func__, vendor, model, 539 strflags); 540 res = -EINVAL; 541 } else 542 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 543 model, strflags, 0); 544 } 545 return res; 546 } 547 548 /** 549 * get_device_flags - get device specific flags from the dynamic device list. 550 * @sdev: &scsi_device to get flags for 551 * @vendor: vendor name 552 * @model: model name 553 * 554 * Description: 555 * Search the global scsi_dev_info_list (specified by list zero) 556 * for an entry matching @vendor and @model, if found, return the 557 * matching flags value, else return the host or global default 558 * settings. Called during scan time. 559 **/ 560 int scsi_get_device_flags(struct scsi_device *sdev, 561 const unsigned char *vendor, 562 const unsigned char *model) 563 { 564 return scsi_get_device_flags_keyed(sdev, vendor, model, 565 SCSI_DEVINFO_GLOBAL); 566 } 567 568 569 /** 570 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 571 * @sdev: &scsi_device to get flags for 572 * @vendor: vendor name 573 * @model: model name 574 * @key: list to look up 575 * 576 * Description: 577 * Search the scsi_dev_info_list specified by @key for an entry 578 * matching @vendor and @model, if found, return the matching 579 * flags value, else return the host or global default settings. 580 * Called during scan time. 581 **/ 582 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 583 const unsigned char *vendor, 584 const unsigned char *model, 585 int key) 586 { 587 struct scsi_dev_info_list *devinfo; 588 int err; 589 590 devinfo = scsi_dev_info_list_find(vendor, model, key); 591 if (!IS_ERR(devinfo)) 592 return devinfo->flags; 593 594 err = PTR_ERR(devinfo); 595 if (err != -ENOENT) 596 return err; 597 598 /* nothing found, return nothing */ 599 if (key != SCSI_DEVINFO_GLOBAL) 600 return 0; 601 602 /* except for the global list, where we have an exception */ 603 if (sdev->sdev_bflags) 604 return sdev->sdev_bflags; 605 606 return scsi_default_dev_flags; 607 } 608 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 609 610 #ifdef CONFIG_SCSI_PROC_FS 611 struct double_list { 612 struct list_head *top; 613 struct list_head *bottom; 614 }; 615 616 static int devinfo_seq_show(struct seq_file *m, void *v) 617 { 618 struct double_list *dl = v; 619 struct scsi_dev_info_list_table *devinfo_table = 620 list_entry(dl->top, struct scsi_dev_info_list_table, node); 621 struct scsi_dev_info_list *devinfo = 622 list_entry(dl->bottom, struct scsi_dev_info_list, 623 dev_info_list); 624 625 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 626 devinfo_table->name) 627 seq_printf(m, "[%s]:\n", devinfo_table->name); 628 629 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 630 devinfo->vendor, devinfo->model, devinfo->flags); 631 return 0; 632 } 633 634 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 635 { 636 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 637 loff_t pos = *ppos; 638 639 if (!dl) 640 return NULL; 641 642 list_for_each(dl->top, &scsi_dev_info_list) { 643 struct scsi_dev_info_list_table *devinfo_table = 644 list_entry(dl->top, struct scsi_dev_info_list_table, 645 node); 646 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 647 if (pos-- == 0) 648 return dl; 649 } 650 651 kfree(dl); 652 return NULL; 653 } 654 655 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 656 { 657 struct double_list *dl = v; 658 struct scsi_dev_info_list_table *devinfo_table = 659 list_entry(dl->top, struct scsi_dev_info_list_table, node); 660 661 ++*ppos; 662 dl->bottom = dl->bottom->next; 663 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 664 dl->top = dl->top->next; 665 if (dl->top == &scsi_dev_info_list) { 666 kfree(dl); 667 return NULL; 668 } 669 devinfo_table = list_entry(dl->top, 670 struct scsi_dev_info_list_table, 671 node); 672 dl->bottom = devinfo_table->scsi_dev_info_list.next; 673 } 674 675 return dl; 676 } 677 678 static void devinfo_seq_stop(struct seq_file *m, void *v) 679 { 680 kfree(v); 681 } 682 683 static const struct seq_operations scsi_devinfo_seq_ops = { 684 .start = devinfo_seq_start, 685 .next = devinfo_seq_next, 686 .stop = devinfo_seq_stop, 687 .show = devinfo_seq_show, 688 }; 689 690 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 691 { 692 return seq_open(file, &scsi_devinfo_seq_ops); 693 } 694 695 /* 696 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 697 * 698 * Description: Adds a black/white list entry for vendor and model with an 699 * integer value of flag to the scsi device info list. 700 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 701 */ 702 static ssize_t proc_scsi_devinfo_write(struct file *file, 703 const char __user *buf, 704 size_t length, loff_t *ppos) 705 { 706 char *buffer; 707 ssize_t err = length; 708 709 if (!buf || length>PAGE_SIZE) 710 return -EINVAL; 711 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 712 return -ENOMEM; 713 if (copy_from_user(buffer, buf, length)) { 714 err =-EFAULT; 715 goto out; 716 } 717 718 if (length < PAGE_SIZE) 719 buffer[length] = '\0'; 720 else if (buffer[PAGE_SIZE-1]) { 721 err = -EINVAL; 722 goto out; 723 } 724 725 scsi_dev_info_list_add_str(buffer); 726 727 out: 728 free_page((unsigned long)buffer); 729 return err; 730 } 731 732 static const struct file_operations scsi_devinfo_proc_fops = { 733 .owner = THIS_MODULE, 734 .open = proc_scsi_devinfo_open, 735 .read = seq_read, 736 .write = proc_scsi_devinfo_write, 737 .llseek = seq_lseek, 738 .release = seq_release, 739 }; 740 #endif /* CONFIG_SCSI_PROC_FS */ 741 742 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 743 MODULE_PARM_DESC(dev_flags, 744 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 745 " list entries for vendor and model with an integer value of flags" 746 " to the scsi device info list"); 747 748 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 749 MODULE_PARM_DESC(default_dev_flags, 750 "scsi default device flag integer value"); 751 752 /** 753 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 754 **/ 755 void scsi_exit_devinfo(void) 756 { 757 #ifdef CONFIG_SCSI_PROC_FS 758 remove_proc_entry("scsi/device_info", NULL); 759 #endif 760 761 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 762 } 763 764 /** 765 * scsi_dev_info_add_list - add a new devinfo list 766 * @key: key of the list to add 767 * @name: Name of the list to add (for /proc/scsi/device_info) 768 * 769 * Adds the requested list, returns zero on success, -EEXIST if the 770 * key is already registered to a list, or other error on failure. 771 */ 772 int scsi_dev_info_add_list(int key, const char *name) 773 { 774 struct scsi_dev_info_list_table *devinfo_table = 775 scsi_devinfo_lookup_by_key(key); 776 777 if (!IS_ERR(devinfo_table)) 778 /* list already exists */ 779 return -EEXIST; 780 781 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 782 783 if (!devinfo_table) 784 return -ENOMEM; 785 786 INIT_LIST_HEAD(&devinfo_table->node); 787 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 788 devinfo_table->name = name; 789 devinfo_table->key = key; 790 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 791 792 return 0; 793 } 794 EXPORT_SYMBOL(scsi_dev_info_add_list); 795 796 /** 797 * scsi_dev_info_remove_list - destroy an added devinfo list 798 * @key: key of the list to destroy 799 * 800 * Iterates over the entire list first, freeing all the values, then 801 * frees the list itself. Returns 0 on success or -EINVAL if the key 802 * can't be found. 803 */ 804 int scsi_dev_info_remove_list(int key) 805 { 806 struct list_head *lh, *lh_next; 807 struct scsi_dev_info_list_table *devinfo_table = 808 scsi_devinfo_lookup_by_key(key); 809 810 if (IS_ERR(devinfo_table)) 811 /* no such list */ 812 return -EINVAL; 813 814 /* remove from the master list */ 815 list_del(&devinfo_table->node); 816 817 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 818 struct scsi_dev_info_list *devinfo; 819 820 devinfo = list_entry(lh, struct scsi_dev_info_list, 821 dev_info_list); 822 kfree(devinfo); 823 } 824 kfree(devinfo_table); 825 826 return 0; 827 } 828 EXPORT_SYMBOL(scsi_dev_info_remove_list); 829 830 /** 831 * scsi_init_devinfo - set up the dynamic device list. 832 * 833 * Description: 834 * Add command line entries from scsi_dev_flags, then add 835 * scsi_static_device_list entries to the scsi device info list. 836 */ 837 int __init scsi_init_devinfo(void) 838 { 839 #ifdef CONFIG_SCSI_PROC_FS 840 struct proc_dir_entry *p; 841 #endif 842 int error, i; 843 844 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 845 if (error) 846 return error; 847 848 error = scsi_dev_info_list_add_str(scsi_dev_flags); 849 if (error) 850 goto out; 851 852 for (i = 0; scsi_static_device_list[i].vendor; i++) { 853 error = scsi_dev_info_list_add(1 /* compatibile */, 854 scsi_static_device_list[i].vendor, 855 scsi_static_device_list[i].model, 856 NULL, 857 scsi_static_device_list[i].flags); 858 if (error) 859 goto out; 860 } 861 862 #ifdef CONFIG_SCSI_PROC_FS 863 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 864 if (!p) { 865 error = -ENOMEM; 866 goto out; 867 } 868 #endif /* CONFIG_SCSI_PROC_FS */ 869 870 out: 871 if (error) 872 scsi_exit_devinfo(); 873 return error; 874 } 875