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", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 226 {"Promise", "", NULL, BLIST_SPARSELUN}, 227 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 228 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 229 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 230 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 231 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 232 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 233 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 234 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 235 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 236 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 241 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 242 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 243 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 244 {"SUN", "T300", "*", BLIST_SPARSELUN}, 245 {"SUN", "T4", "*", BLIST_SPARSELUN}, 246 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 247 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 248 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 249 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 250 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 251 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 252 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 253 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 254 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 255 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 256 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 257 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 258 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 259 { NULL, NULL, NULL, 0 }, 260 }; 261 262 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 263 { 264 struct scsi_dev_info_list_table *devinfo_table; 265 int found = 0; 266 267 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 268 if (devinfo_table->key == key) { 269 found = 1; 270 break; 271 } 272 if (!found) 273 return ERR_PTR(-EINVAL); 274 275 return devinfo_table; 276 } 277 278 /* 279 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 280 * devinfo vendor and model strings. 281 */ 282 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 283 char *from, int compatible) 284 { 285 size_t from_length; 286 287 from_length = strlen(from); 288 strncpy(to, from, min(to_length, from_length)); 289 if (from_length < to_length) { 290 if (compatible) { 291 /* 292 * NUL terminate the string if it is short. 293 */ 294 to[from_length] = '\0'; 295 } else { 296 /* 297 * space pad the string if it is short. 298 */ 299 strncpy(&to[from_length], spaces, 300 to_length - from_length); 301 } 302 } 303 if (from_length > to_length) 304 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 305 __func__, name, from); 306 } 307 308 /** 309 * scsi_dev_info_list_add - add one dev_info list entry. 310 * @compatible: if true, null terminate short strings. Otherwise space pad. 311 * @vendor: vendor string 312 * @model: model (product) string 313 * @strflags: integer string 314 * @flags: if strflags NULL, use this flag value 315 * 316 * Description: 317 * Create and add one dev_info entry for @vendor, @model, @strflags or 318 * @flag. If @compatible, add to the tail of the list, do not space 319 * pad, and set devinfo->compatible. The scsi_static_device_list entries 320 * are added with @compatible 1 and @clfags NULL. 321 * 322 * Returns: 0 OK, -error on failure. 323 **/ 324 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 325 char *strflags, int flags) 326 { 327 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 328 strflags, flags, 329 SCSI_DEVINFO_GLOBAL); 330 } 331 332 /** 333 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 334 * @compatible: if true, null terminate short strings. Otherwise space pad. 335 * @vendor: vendor string 336 * @model: model (product) string 337 * @strflags: integer string 338 * @flags: if strflags NULL, use this flag value 339 * @key: specify list to use 340 * 341 * Description: 342 * Create and add one dev_info entry for @vendor, @model, 343 * @strflags or @flag in list specified by @key. If @compatible, 344 * add to the tail of the list, do not space pad, and set 345 * devinfo->compatible. The scsi_static_device_list entries are 346 * added with @compatible 1 and @clfags NULL. 347 * 348 * Returns: 0 OK, -error on failure. 349 **/ 350 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 351 char *strflags, int flags, int key) 352 { 353 struct scsi_dev_info_list *devinfo; 354 struct scsi_dev_info_list_table *devinfo_table = 355 scsi_devinfo_lookup_by_key(key); 356 357 if (IS_ERR(devinfo_table)) 358 return PTR_ERR(devinfo_table); 359 360 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 361 if (!devinfo) { 362 printk(KERN_ERR "%s: no memory\n", __func__); 363 return -ENOMEM; 364 } 365 366 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 367 vendor, compatible); 368 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 369 model, compatible); 370 371 if (strflags) 372 devinfo->flags = simple_strtoul(strflags, NULL, 0); 373 else 374 devinfo->flags = flags; 375 376 devinfo->compatible = compatible; 377 378 if (compatible) 379 list_add_tail(&devinfo->dev_info_list, 380 &devinfo_table->scsi_dev_info_list); 381 else 382 list_add(&devinfo->dev_info_list, 383 &devinfo_table->scsi_dev_info_list); 384 385 return 0; 386 } 387 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 388 389 /** 390 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 391 * @vendor: vendor string 392 * @model: model (product) string 393 * @key: specify list to use 394 * 395 * Description: 396 * Remove and destroy one dev_info entry for @vendor, @model 397 * in list specified by @key. 398 * 399 * Returns: 0 OK, -error on failure. 400 **/ 401 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 402 { 403 struct scsi_dev_info_list *devinfo, *found = NULL; 404 struct scsi_dev_info_list_table *devinfo_table = 405 scsi_devinfo_lookup_by_key(key); 406 407 if (IS_ERR(devinfo_table)) 408 return PTR_ERR(devinfo_table); 409 410 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 411 dev_info_list) { 412 if (devinfo->compatible) { 413 /* 414 * Behave like the older version of get_device_flags. 415 */ 416 size_t max; 417 /* 418 * XXX why skip leading spaces? If an odd INQUIRY 419 * value, that should have been part of the 420 * scsi_static_device_list[] entry, such as " FOO" 421 * rather than "FOO". Since this code is already 422 * here, and we don't know what device it is 423 * trying to work with, leave it as-is. 424 */ 425 max = 8; /* max length of vendor */ 426 while ((max > 0) && *vendor == ' ') { 427 max--; 428 vendor++; 429 } 430 /* 431 * XXX removing the following strlen() would be 432 * good, using it means that for a an entry not in 433 * the list, we scan every byte of every vendor 434 * listed in scsi_static_device_list[], and never match 435 * a single one (and still have to compare at 436 * least the first byte of each vendor). 437 */ 438 if (memcmp(devinfo->vendor, vendor, 439 min(max, strlen(devinfo->vendor)))) 440 continue; 441 /* 442 * Skip spaces again. 443 */ 444 max = 16; /* max length of model */ 445 while ((max > 0) && *model == ' ') { 446 max--; 447 model++; 448 } 449 if (memcmp(devinfo->model, model, 450 min(max, strlen(devinfo->model)))) 451 continue; 452 found = devinfo; 453 } else { 454 if (!memcmp(devinfo->vendor, vendor, 455 sizeof(devinfo->vendor)) && 456 !memcmp(devinfo->model, model, 457 sizeof(devinfo->model))) 458 found = devinfo; 459 } 460 if (found) 461 break; 462 } 463 464 if (found) { 465 list_del(&found->dev_info_list); 466 kfree(found); 467 return 0; 468 } 469 470 return -ENOENT; 471 } 472 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 473 474 /** 475 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 476 * @dev_list: string of device flags to add 477 * 478 * Description: 479 * Parse dev_list, and add entries to the scsi_dev_info_list. 480 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 481 * dev_list is modified via strsep. Can be called for command line 482 * addition, for proc or mabye a sysfs interface. 483 * 484 * Returns: 0 if OK, -error on failure. 485 **/ 486 static int scsi_dev_info_list_add_str(char *dev_list) 487 { 488 char *vendor, *model, *strflags, *next; 489 char *next_check; 490 int res = 0; 491 492 next = dev_list; 493 if (next && next[0] == '"') { 494 /* 495 * Ignore both the leading and trailing quote. 496 */ 497 next++; 498 next_check = ",\""; 499 } else { 500 next_check = ","; 501 } 502 503 /* 504 * For the leading and trailing '"' case, the for loop comes 505 * through the last time with vendor[0] == '\0'. 506 */ 507 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 508 && (res == 0); vendor = strsep(&next, ":")) { 509 strflags = NULL; 510 model = strsep(&next, ":"); 511 if (model) 512 strflags = strsep(&next, next_check); 513 if (!model || !strflags) { 514 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 515 " '%s'\n", __func__, vendor, model, 516 strflags); 517 res = -EINVAL; 518 } else 519 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 520 model, strflags, 0); 521 } 522 return res; 523 } 524 525 /** 526 * get_device_flags - get device specific flags from the dynamic device list. 527 * @sdev: &scsi_device to get flags for 528 * @vendor: vendor name 529 * @model: model name 530 * 531 * Description: 532 * Search the global scsi_dev_info_list (specified by list zero) 533 * for an entry matching @vendor and @model, if found, return the 534 * matching flags value, else return the host or global default 535 * settings. Called during scan time. 536 **/ 537 int scsi_get_device_flags(struct scsi_device *sdev, 538 const unsigned char *vendor, 539 const unsigned char *model) 540 { 541 return scsi_get_device_flags_keyed(sdev, vendor, model, 542 SCSI_DEVINFO_GLOBAL); 543 } 544 545 546 /** 547 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 548 * @sdev: &scsi_device to get flags for 549 * @vendor: vendor name 550 * @model: model name 551 * @key: list to look up 552 * 553 * Description: 554 * Search the scsi_dev_info_list specified by @key for an entry 555 * matching @vendor and @model, if found, return the matching 556 * flags value, else return the host or global default settings. 557 * Called during scan time. 558 **/ 559 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 560 const unsigned char *vendor, 561 const unsigned char *model, 562 int key) 563 { 564 struct scsi_dev_info_list *devinfo; 565 struct scsi_dev_info_list_table *devinfo_table; 566 567 devinfo_table = scsi_devinfo_lookup_by_key(key); 568 569 if (IS_ERR(devinfo_table)) 570 return PTR_ERR(devinfo_table); 571 572 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 573 dev_info_list) { 574 if (devinfo->compatible) { 575 /* 576 * Behave like the older version of get_device_flags. 577 */ 578 size_t max; 579 /* 580 * XXX why skip leading spaces? If an odd INQUIRY 581 * value, that should have been part of the 582 * scsi_static_device_list[] entry, such as " FOO" 583 * rather than "FOO". Since this code is already 584 * here, and we don't know what device it is 585 * trying to work with, leave it as-is. 586 */ 587 max = 8; /* max length of vendor */ 588 while ((max > 0) && *vendor == ' ') { 589 max--; 590 vendor++; 591 } 592 /* 593 * XXX removing the following strlen() would be 594 * good, using it means that for a an entry not in 595 * the list, we scan every byte of every vendor 596 * listed in scsi_static_device_list[], and never match 597 * a single one (and still have to compare at 598 * least the first byte of each vendor). 599 */ 600 if (memcmp(devinfo->vendor, vendor, 601 min(max, strlen(devinfo->vendor)))) 602 continue; 603 /* 604 * Skip spaces again. 605 */ 606 max = 16; /* max length of model */ 607 while ((max > 0) && *model == ' ') { 608 max--; 609 model++; 610 } 611 if (memcmp(devinfo->model, model, 612 min(max, strlen(devinfo->model)))) 613 continue; 614 return devinfo->flags; 615 } else { 616 if (!memcmp(devinfo->vendor, vendor, 617 sizeof(devinfo->vendor)) && 618 !memcmp(devinfo->model, model, 619 sizeof(devinfo->model))) 620 return devinfo->flags; 621 } 622 } 623 /* nothing found, return nothing */ 624 if (key != SCSI_DEVINFO_GLOBAL) 625 return 0; 626 627 /* except for the global list, where we have an exception */ 628 if (sdev->sdev_bflags) 629 return sdev->sdev_bflags; 630 631 return scsi_default_dev_flags; 632 } 633 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 634 635 #ifdef CONFIG_SCSI_PROC_FS 636 struct double_list { 637 struct list_head *top; 638 struct list_head *bottom; 639 }; 640 641 static int devinfo_seq_show(struct seq_file *m, void *v) 642 { 643 struct double_list *dl = v; 644 struct scsi_dev_info_list_table *devinfo_table = 645 list_entry(dl->top, struct scsi_dev_info_list_table, node); 646 struct scsi_dev_info_list *devinfo = 647 list_entry(dl->bottom, struct scsi_dev_info_list, 648 dev_info_list); 649 650 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 651 devinfo_table->name) 652 seq_printf(m, "[%s]:\n", devinfo_table->name); 653 654 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 655 devinfo->vendor, devinfo->model, devinfo->flags); 656 return 0; 657 } 658 659 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 660 { 661 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 662 loff_t pos = *ppos; 663 664 if (!dl) 665 return NULL; 666 667 list_for_each(dl->top, &scsi_dev_info_list) { 668 struct scsi_dev_info_list_table *devinfo_table = 669 list_entry(dl->top, struct scsi_dev_info_list_table, 670 node); 671 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 672 if (pos-- == 0) 673 return dl; 674 } 675 676 kfree(dl); 677 return NULL; 678 } 679 680 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 681 { 682 struct double_list *dl = v; 683 struct scsi_dev_info_list_table *devinfo_table = 684 list_entry(dl->top, struct scsi_dev_info_list_table, node); 685 686 ++*ppos; 687 dl->bottom = dl->bottom->next; 688 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 689 dl->top = dl->top->next; 690 if (dl->top == &scsi_dev_info_list) { 691 kfree(dl); 692 return NULL; 693 } 694 devinfo_table = list_entry(dl->top, 695 struct scsi_dev_info_list_table, 696 node); 697 dl->bottom = devinfo_table->scsi_dev_info_list.next; 698 } 699 700 return dl; 701 } 702 703 static void devinfo_seq_stop(struct seq_file *m, void *v) 704 { 705 kfree(v); 706 } 707 708 static const struct seq_operations scsi_devinfo_seq_ops = { 709 .start = devinfo_seq_start, 710 .next = devinfo_seq_next, 711 .stop = devinfo_seq_stop, 712 .show = devinfo_seq_show, 713 }; 714 715 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 716 { 717 return seq_open(file, &scsi_devinfo_seq_ops); 718 } 719 720 /* 721 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 722 * 723 * Description: Adds a black/white list entry for vendor and model with an 724 * integer value of flag to the scsi device info list. 725 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 726 */ 727 static ssize_t proc_scsi_devinfo_write(struct file *file, 728 const char __user *buf, 729 size_t length, loff_t *ppos) 730 { 731 char *buffer; 732 ssize_t err = length; 733 734 if (!buf || length>PAGE_SIZE) 735 return -EINVAL; 736 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 737 return -ENOMEM; 738 if (copy_from_user(buffer, buf, length)) { 739 err =-EFAULT; 740 goto out; 741 } 742 743 if (length < PAGE_SIZE) 744 buffer[length] = '\0'; 745 else if (buffer[PAGE_SIZE-1]) { 746 err = -EINVAL; 747 goto out; 748 } 749 750 scsi_dev_info_list_add_str(buffer); 751 752 out: 753 free_page((unsigned long)buffer); 754 return err; 755 } 756 757 static const struct file_operations scsi_devinfo_proc_fops = { 758 .owner = THIS_MODULE, 759 .open = proc_scsi_devinfo_open, 760 .read = seq_read, 761 .write = proc_scsi_devinfo_write, 762 .llseek = seq_lseek, 763 .release = seq_release, 764 }; 765 #endif /* CONFIG_SCSI_PROC_FS */ 766 767 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 768 MODULE_PARM_DESC(dev_flags, 769 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 770 " list entries for vendor and model with an integer value of flags" 771 " to the scsi device info list"); 772 773 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 774 MODULE_PARM_DESC(default_dev_flags, 775 "scsi default device flag integer value"); 776 777 /** 778 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 779 **/ 780 void scsi_exit_devinfo(void) 781 { 782 #ifdef CONFIG_SCSI_PROC_FS 783 remove_proc_entry("scsi/device_info", NULL); 784 #endif 785 786 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 787 } 788 789 /** 790 * scsi_dev_info_add_list - add a new devinfo list 791 * @key: key of the list to add 792 * @name: Name of the list to add (for /proc/scsi/device_info) 793 * 794 * Adds the requested list, returns zero on success, -EEXIST if the 795 * key is already registered to a list, or other error on failure. 796 */ 797 int scsi_dev_info_add_list(int key, const char *name) 798 { 799 struct scsi_dev_info_list_table *devinfo_table = 800 scsi_devinfo_lookup_by_key(key); 801 802 if (!IS_ERR(devinfo_table)) 803 /* list already exists */ 804 return -EEXIST; 805 806 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 807 808 if (!devinfo_table) 809 return -ENOMEM; 810 811 INIT_LIST_HEAD(&devinfo_table->node); 812 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 813 devinfo_table->name = name; 814 devinfo_table->key = key; 815 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 816 817 return 0; 818 } 819 EXPORT_SYMBOL(scsi_dev_info_add_list); 820 821 /** 822 * scsi_dev_info_remove_list - destroy an added devinfo list 823 * @key: key of the list to destroy 824 * 825 * Iterates over the entire list first, freeing all the values, then 826 * frees the list itself. Returns 0 on success or -EINVAL if the key 827 * can't be found. 828 */ 829 int scsi_dev_info_remove_list(int key) 830 { 831 struct list_head *lh, *lh_next; 832 struct scsi_dev_info_list_table *devinfo_table = 833 scsi_devinfo_lookup_by_key(key); 834 835 if (IS_ERR(devinfo_table)) 836 /* no such list */ 837 return -EINVAL; 838 839 /* remove from the master list */ 840 list_del(&devinfo_table->node); 841 842 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 843 struct scsi_dev_info_list *devinfo; 844 845 devinfo = list_entry(lh, struct scsi_dev_info_list, 846 dev_info_list); 847 kfree(devinfo); 848 } 849 kfree(devinfo_table); 850 851 return 0; 852 } 853 EXPORT_SYMBOL(scsi_dev_info_remove_list); 854 855 /** 856 * scsi_init_devinfo - set up the dynamic device list. 857 * 858 * Description: 859 * Add command line entries from scsi_dev_flags, then add 860 * scsi_static_device_list entries to the scsi device info list. 861 */ 862 int __init scsi_init_devinfo(void) 863 { 864 #ifdef CONFIG_SCSI_PROC_FS 865 struct proc_dir_entry *p; 866 #endif 867 int error, i; 868 869 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 870 if (error) 871 return error; 872 873 error = scsi_dev_info_list_add_str(scsi_dev_flags); 874 if (error) 875 goto out; 876 877 for (i = 0; scsi_static_device_list[i].vendor; i++) { 878 error = scsi_dev_info_list_add(1 /* compatibile */, 879 scsi_static_device_list[i].vendor, 880 scsi_static_device_list[i].model, 881 NULL, 882 scsi_static_device_list[i].flags); 883 if (error) 884 goto out; 885 } 886 887 #ifdef CONFIG_SCSI_PROC_FS 888 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 889 if (!p) { 890 error = -ENOMEM; 891 goto out; 892 } 893 #endif /* CONFIG_SCSI_PROC_FS */ 894 895 out: 896 if (error) 897 scsi_exit_devinfo(); 898 return error; 899 } 900