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