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 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 232 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 233 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 234 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 235 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 236 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 240 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 241 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 242 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 243 {"SUN", "T300", "*", BLIST_SPARSELUN}, 244 {"SUN", "T4", "*", BLIST_SPARSELUN}, 245 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 246 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 247 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 248 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 249 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 250 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 251 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 252 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 253 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 254 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 255 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 256 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 257 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 258 { NULL, NULL, NULL, 0 }, 259 }; 260 261 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 262 { 263 struct scsi_dev_info_list_table *devinfo_table; 264 int found = 0; 265 266 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 267 if (devinfo_table->key == key) { 268 found = 1; 269 break; 270 } 271 if (!found) 272 return ERR_PTR(-EINVAL); 273 274 return devinfo_table; 275 } 276 277 /* 278 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 279 * devinfo vendor and model strings. 280 */ 281 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 282 char *from, int compatible) 283 { 284 size_t from_length; 285 286 from_length = strlen(from); 287 strncpy(to, from, min(to_length, from_length)); 288 if (from_length < to_length) { 289 if (compatible) { 290 /* 291 * NUL terminate the string if it is short. 292 */ 293 to[from_length] = '\0'; 294 } else { 295 /* 296 * space pad the string if it is short. 297 */ 298 strncpy(&to[from_length], spaces, 299 to_length - from_length); 300 } 301 } 302 if (from_length > to_length) 303 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 304 __func__, name, from); 305 } 306 307 /** 308 * scsi_dev_info_list_add - add one dev_info list entry. 309 * @compatible: if true, null terminate short strings. Otherwise space pad. 310 * @vendor: vendor string 311 * @model: model (product) string 312 * @strflags: integer string 313 * @flags: if strflags NULL, use this flag value 314 * 315 * Description: 316 * Create and add one dev_info entry for @vendor, @model, @strflags or 317 * @flag. If @compatible, add to the tail of the list, do not space 318 * pad, and set devinfo->compatible. The scsi_static_device_list entries 319 * are added with @compatible 1 and @clfags NULL. 320 * 321 * Returns: 0 OK, -error on failure. 322 **/ 323 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 324 char *strflags, int flags) 325 { 326 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 327 strflags, flags, 328 SCSI_DEVINFO_GLOBAL); 329 } 330 331 /** 332 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 333 * @compatible: if true, null terminate short strings. Otherwise space pad. 334 * @vendor: vendor string 335 * @model: model (product) string 336 * @strflags: integer string 337 * @flags: if strflags NULL, use this flag value 338 * @key: specify list to use 339 * 340 * Description: 341 * Create and add one dev_info entry for @vendor, @model, 342 * @strflags or @flag in list specified by @key. If @compatible, 343 * add to the tail of the list, do not space pad, and set 344 * devinfo->compatible. The scsi_static_device_list entries are 345 * added with @compatible 1 and @clfags NULL. 346 * 347 * Returns: 0 OK, -error on failure. 348 **/ 349 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 350 char *strflags, int flags, int key) 351 { 352 struct scsi_dev_info_list *devinfo; 353 struct scsi_dev_info_list_table *devinfo_table = 354 scsi_devinfo_lookup_by_key(key); 355 356 if (IS_ERR(devinfo_table)) 357 return PTR_ERR(devinfo_table); 358 359 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 360 if (!devinfo) { 361 printk(KERN_ERR "%s: no memory\n", __func__); 362 return -ENOMEM; 363 } 364 365 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 366 vendor, compatible); 367 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 368 model, compatible); 369 370 if (strflags) 371 devinfo->flags = simple_strtoul(strflags, NULL, 0); 372 else 373 devinfo->flags = flags; 374 375 devinfo->compatible = compatible; 376 377 if (compatible) 378 list_add_tail(&devinfo->dev_info_list, 379 &devinfo_table->scsi_dev_info_list); 380 else 381 list_add(&devinfo->dev_info_list, 382 &devinfo_table->scsi_dev_info_list); 383 384 return 0; 385 } 386 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 387 388 /** 389 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 390 * @vendor: vendor string 391 * @model: model (product) string 392 * @key: specify list to use 393 * 394 * Description: 395 * Remove and destroy one dev_info entry for @vendor, @model 396 * in list specified by @key. 397 * 398 * Returns: 0 OK, -error on failure. 399 **/ 400 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 401 { 402 struct scsi_dev_info_list *devinfo, *found = NULL; 403 struct scsi_dev_info_list_table *devinfo_table = 404 scsi_devinfo_lookup_by_key(key); 405 406 if (IS_ERR(devinfo_table)) 407 return PTR_ERR(devinfo_table); 408 409 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 410 dev_info_list) { 411 if (devinfo->compatible) { 412 /* 413 * Behave like the older version of get_device_flags. 414 */ 415 size_t max; 416 /* 417 * XXX why skip leading spaces? If an odd INQUIRY 418 * value, that should have been part of the 419 * scsi_static_device_list[] entry, such as " FOO" 420 * rather than "FOO". Since this code is already 421 * here, and we don't know what device it is 422 * trying to work with, leave it as-is. 423 */ 424 max = 8; /* max length of vendor */ 425 while ((max > 0) && *vendor == ' ') { 426 max--; 427 vendor++; 428 } 429 /* 430 * XXX removing the following strlen() would be 431 * good, using it means that for a an entry not in 432 * the list, we scan every byte of every vendor 433 * listed in scsi_static_device_list[], and never match 434 * a single one (and still have to compare at 435 * least the first byte of each vendor). 436 */ 437 if (memcmp(devinfo->vendor, vendor, 438 min(max, strlen(devinfo->vendor)))) 439 continue; 440 /* 441 * Skip spaces again. 442 */ 443 max = 16; /* max length of model */ 444 while ((max > 0) && *model == ' ') { 445 max--; 446 model++; 447 } 448 if (memcmp(devinfo->model, model, 449 min(max, strlen(devinfo->model)))) 450 continue; 451 found = devinfo; 452 } else { 453 if (!memcmp(devinfo->vendor, vendor, 454 sizeof(devinfo->vendor)) && 455 !memcmp(devinfo->model, model, 456 sizeof(devinfo->model))) 457 found = devinfo; 458 } 459 if (found) 460 break; 461 } 462 463 if (found) { 464 list_del(&found->dev_info_list); 465 kfree(found); 466 return 0; 467 } 468 469 return -ENOENT; 470 } 471 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 472 473 /** 474 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 475 * @dev_list: string of device flags to add 476 * 477 * Description: 478 * Parse dev_list, and add entries to the scsi_dev_info_list. 479 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 480 * dev_list is modified via strsep. Can be called for command line 481 * addition, for proc or mabye a sysfs interface. 482 * 483 * Returns: 0 if OK, -error on failure. 484 **/ 485 static int scsi_dev_info_list_add_str(char *dev_list) 486 { 487 char *vendor, *model, *strflags, *next; 488 char *next_check; 489 int res = 0; 490 491 next = dev_list; 492 if (next && next[0] == '"') { 493 /* 494 * Ignore both the leading and trailing quote. 495 */ 496 next++; 497 next_check = ",\""; 498 } else { 499 next_check = ","; 500 } 501 502 /* 503 * For the leading and trailing '"' case, the for loop comes 504 * through the last time with vendor[0] == '\0'. 505 */ 506 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 507 && (res == 0); vendor = strsep(&next, ":")) { 508 strflags = NULL; 509 model = strsep(&next, ":"); 510 if (model) 511 strflags = strsep(&next, next_check); 512 if (!model || !strflags) { 513 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 514 " '%s'\n", __func__, vendor, model, 515 strflags); 516 res = -EINVAL; 517 } else 518 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 519 model, strflags, 0); 520 } 521 return res; 522 } 523 524 /** 525 * get_device_flags - get device specific flags from the dynamic device list. 526 * @sdev: &scsi_device to get flags for 527 * @vendor: vendor name 528 * @model: model name 529 * 530 * Description: 531 * Search the global scsi_dev_info_list (specified by list zero) 532 * for an entry matching @vendor and @model, if found, return the 533 * matching flags value, else return the host or global default 534 * settings. Called during scan time. 535 **/ 536 int scsi_get_device_flags(struct scsi_device *sdev, 537 const unsigned char *vendor, 538 const unsigned char *model) 539 { 540 return scsi_get_device_flags_keyed(sdev, vendor, model, 541 SCSI_DEVINFO_GLOBAL); 542 } 543 544 545 /** 546 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 547 * @sdev: &scsi_device to get flags for 548 * @vendor: vendor name 549 * @model: model name 550 * @key: list to look up 551 * 552 * Description: 553 * Search the scsi_dev_info_list specified by @key for an entry 554 * matching @vendor and @model, if found, return the matching 555 * flags value, else return the host or global default settings. 556 * Called during scan time. 557 **/ 558 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 559 const unsigned char *vendor, 560 const unsigned char *model, 561 int key) 562 { 563 struct scsi_dev_info_list *devinfo; 564 struct scsi_dev_info_list_table *devinfo_table; 565 566 devinfo_table = scsi_devinfo_lookup_by_key(key); 567 568 if (IS_ERR(devinfo_table)) 569 return PTR_ERR(devinfo_table); 570 571 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 572 dev_info_list) { 573 if (devinfo->compatible) { 574 /* 575 * Behave like the older version of get_device_flags. 576 */ 577 size_t max; 578 /* 579 * XXX why skip leading spaces? If an odd INQUIRY 580 * value, that should have been part of the 581 * scsi_static_device_list[] entry, such as " FOO" 582 * rather than "FOO". Since this code is already 583 * here, and we don't know what device it is 584 * trying to work with, leave it as-is. 585 */ 586 max = 8; /* max length of vendor */ 587 while ((max > 0) && *vendor == ' ') { 588 max--; 589 vendor++; 590 } 591 /* 592 * XXX removing the following strlen() would be 593 * good, using it means that for a an entry not in 594 * the list, we scan every byte of every vendor 595 * listed in scsi_static_device_list[], and never match 596 * a single one (and still have to compare at 597 * least the first byte of each vendor). 598 */ 599 if (memcmp(devinfo->vendor, vendor, 600 min(max, strlen(devinfo->vendor)))) 601 continue; 602 /* 603 * Skip spaces again. 604 */ 605 max = 16; /* max length of model */ 606 while ((max > 0) && *model == ' ') { 607 max--; 608 model++; 609 } 610 if (memcmp(devinfo->model, model, 611 min(max, strlen(devinfo->model)))) 612 continue; 613 return devinfo->flags; 614 } else { 615 if (!memcmp(devinfo->vendor, vendor, 616 sizeof(devinfo->vendor)) && 617 !memcmp(devinfo->model, model, 618 sizeof(devinfo->model))) 619 return devinfo->flags; 620 } 621 } 622 /* nothing found, return nothing */ 623 if (key != SCSI_DEVINFO_GLOBAL) 624 return 0; 625 626 /* except for the global list, where we have an exception */ 627 if (sdev->sdev_bflags) 628 return sdev->sdev_bflags; 629 630 return scsi_default_dev_flags; 631 } 632 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 633 634 #ifdef CONFIG_SCSI_PROC_FS 635 struct double_list { 636 struct list_head *top; 637 struct list_head *bottom; 638 }; 639 640 static int devinfo_seq_show(struct seq_file *m, void *v) 641 { 642 struct double_list *dl = v; 643 struct scsi_dev_info_list_table *devinfo_table = 644 list_entry(dl->top, struct scsi_dev_info_list_table, node); 645 struct scsi_dev_info_list *devinfo = 646 list_entry(dl->bottom, struct scsi_dev_info_list, 647 dev_info_list); 648 649 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 650 devinfo_table->name) 651 seq_printf(m, "[%s]:\n", devinfo_table->name); 652 653 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 654 devinfo->vendor, devinfo->model, devinfo->flags); 655 return 0; 656 } 657 658 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 659 { 660 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 661 loff_t pos = *ppos; 662 663 if (!dl) 664 return NULL; 665 666 list_for_each(dl->top, &scsi_dev_info_list) { 667 struct scsi_dev_info_list_table *devinfo_table = 668 list_entry(dl->top, struct scsi_dev_info_list_table, 669 node); 670 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 671 if (pos-- == 0) 672 return dl; 673 } 674 675 kfree(dl); 676 return NULL; 677 } 678 679 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 680 { 681 struct double_list *dl = v; 682 struct scsi_dev_info_list_table *devinfo_table = 683 list_entry(dl->top, struct scsi_dev_info_list_table, node); 684 685 ++*ppos; 686 dl->bottom = dl->bottom->next; 687 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 688 dl->top = dl->top->next; 689 if (dl->top == &scsi_dev_info_list) { 690 kfree(dl); 691 return NULL; 692 } 693 devinfo_table = list_entry(dl->top, 694 struct scsi_dev_info_list_table, 695 node); 696 dl->bottom = devinfo_table->scsi_dev_info_list.next; 697 } 698 699 return dl; 700 } 701 702 static void devinfo_seq_stop(struct seq_file *m, void *v) 703 { 704 kfree(v); 705 } 706 707 static const struct seq_operations scsi_devinfo_seq_ops = { 708 .start = devinfo_seq_start, 709 .next = devinfo_seq_next, 710 .stop = devinfo_seq_stop, 711 .show = devinfo_seq_show, 712 }; 713 714 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 715 { 716 return seq_open(file, &scsi_devinfo_seq_ops); 717 } 718 719 /* 720 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 721 * 722 * Description: Adds a black/white list entry for vendor and model with an 723 * integer value of flag to the scsi device info list. 724 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 725 */ 726 static ssize_t proc_scsi_devinfo_write(struct file *file, 727 const char __user *buf, 728 size_t length, loff_t *ppos) 729 { 730 char *buffer; 731 ssize_t err = length; 732 733 if (!buf || length>PAGE_SIZE) 734 return -EINVAL; 735 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 736 return -ENOMEM; 737 if (copy_from_user(buffer, buf, length)) { 738 err =-EFAULT; 739 goto out; 740 } 741 742 if (length < PAGE_SIZE) 743 buffer[length] = '\0'; 744 else if (buffer[PAGE_SIZE-1]) { 745 err = -EINVAL; 746 goto out; 747 } 748 749 scsi_dev_info_list_add_str(buffer); 750 751 out: 752 free_page((unsigned long)buffer); 753 return err; 754 } 755 756 static const struct file_operations scsi_devinfo_proc_fops = { 757 .owner = THIS_MODULE, 758 .open = proc_scsi_devinfo_open, 759 .read = seq_read, 760 .write = proc_scsi_devinfo_write, 761 .llseek = seq_lseek, 762 .release = seq_release, 763 }; 764 #endif /* CONFIG_SCSI_PROC_FS */ 765 766 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 767 MODULE_PARM_DESC(dev_flags, 768 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 769 " list entries for vendor and model with an integer value of flags" 770 " to the scsi device info list"); 771 772 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 773 MODULE_PARM_DESC(default_dev_flags, 774 "scsi default device flag integer value"); 775 776 /** 777 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 778 **/ 779 void scsi_exit_devinfo(void) 780 { 781 #ifdef CONFIG_SCSI_PROC_FS 782 remove_proc_entry("scsi/device_info", NULL); 783 #endif 784 785 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 786 } 787 788 /** 789 * scsi_dev_info_add_list - add a new devinfo list 790 * @key: key of the list to add 791 * @name: Name of the list to add (for /proc/scsi/device_info) 792 * 793 * Adds the requested list, returns zero on success, -EEXIST if the 794 * key is already registered to a list, or other error on failure. 795 */ 796 int scsi_dev_info_add_list(int key, const char *name) 797 { 798 struct scsi_dev_info_list_table *devinfo_table = 799 scsi_devinfo_lookup_by_key(key); 800 801 if (!IS_ERR(devinfo_table)) 802 /* list already exists */ 803 return -EEXIST; 804 805 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 806 807 if (!devinfo_table) 808 return -ENOMEM; 809 810 INIT_LIST_HEAD(&devinfo_table->node); 811 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 812 devinfo_table->name = name; 813 devinfo_table->key = key; 814 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 815 816 return 0; 817 } 818 EXPORT_SYMBOL(scsi_dev_info_add_list); 819 820 /** 821 * scsi_dev_info_remove_list - destroy an added devinfo list 822 * @key: key of the list to destroy 823 * 824 * Iterates over the entire list first, freeing all the values, then 825 * frees the list itself. Returns 0 on success or -EINVAL if the key 826 * can't be found. 827 */ 828 int scsi_dev_info_remove_list(int key) 829 { 830 struct list_head *lh, *lh_next; 831 struct scsi_dev_info_list_table *devinfo_table = 832 scsi_devinfo_lookup_by_key(key); 833 834 if (IS_ERR(devinfo_table)) 835 /* no such list */ 836 return -EINVAL; 837 838 /* remove from the master list */ 839 list_del(&devinfo_table->node); 840 841 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 842 struct scsi_dev_info_list *devinfo; 843 844 devinfo = list_entry(lh, struct scsi_dev_info_list, 845 dev_info_list); 846 kfree(devinfo); 847 } 848 kfree(devinfo_table); 849 850 return 0; 851 } 852 EXPORT_SYMBOL(scsi_dev_info_remove_list); 853 854 /** 855 * scsi_init_devinfo - set up the dynamic device list. 856 * 857 * Description: 858 * Add command line entries from scsi_dev_flags, then add 859 * scsi_static_device_list entries to the scsi device info list. 860 */ 861 int __init scsi_init_devinfo(void) 862 { 863 #ifdef CONFIG_SCSI_PROC_FS 864 struct proc_dir_entry *p; 865 #endif 866 int error, i; 867 868 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 869 if (error) 870 return error; 871 872 error = scsi_dev_info_list_add_str(scsi_dev_flags); 873 if (error) 874 goto out; 875 876 for (i = 0; scsi_static_device_list[i].vendor; i++) { 877 error = scsi_dev_info_list_add(1 /* compatibile */, 878 scsi_static_device_list[i].vendor, 879 scsi_static_device_list[i].model, 880 NULL, 881 scsi_static_device_list[i].flags); 882 if (error) 883 goto out; 884 } 885 886 #ifdef CONFIG_SCSI_PROC_FS 887 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 888 if (!p) { 889 error = -ENOMEM; 890 goto out; 891 } 892 #endif /* CONFIG_SCSI_PROC_FS */ 893 894 out: 895 if (error) 896 scsi_exit_devinfo(); 897 return error; 898 } 899