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 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 209 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 210 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 211 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 212 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 213 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 214 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 215 {"MICROP", "4110", NULL, BLIST_NOTQ}, 216 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC}, 217 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 218 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 219 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 223 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 224 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 225 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 226 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 227 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 228 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 229 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 230 {"Promise", "", NULL, BLIST_SPARSELUN}, 231 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 232 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 233 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 234 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 235 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 236 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 237 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 238 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 239 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 240 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 241 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 242 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 243 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 244 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 245 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 246 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 247 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 248 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 249 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 250 {"SUN", "T300", "*", BLIST_SPARSELUN}, 251 {"SUN", "T4", "*", BLIST_SPARSELUN}, 252 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 253 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 254 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 255 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 256 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 257 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 258 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 259 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 260 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 261 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 262 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 263 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 264 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 265 { NULL, NULL, NULL, 0 }, 266 }; 267 268 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 269 { 270 struct scsi_dev_info_list_table *devinfo_table; 271 int found = 0; 272 273 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 274 if (devinfo_table->key == key) { 275 found = 1; 276 break; 277 } 278 if (!found) 279 return ERR_PTR(-EINVAL); 280 281 return devinfo_table; 282 } 283 284 /* 285 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 286 * devinfo vendor and model strings. 287 */ 288 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 289 char *from, int compatible) 290 { 291 size_t from_length; 292 293 from_length = strlen(from); 294 strncpy(to, from, min(to_length, from_length)); 295 if (from_length < to_length) { 296 if (compatible) { 297 /* 298 * NUL terminate the string if it is short. 299 */ 300 to[from_length] = '\0'; 301 } else { 302 /* 303 * space pad the string if it is short. 304 */ 305 strncpy(&to[from_length], spaces, 306 to_length - from_length); 307 } 308 } 309 if (from_length > to_length) 310 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 311 __func__, name, from); 312 } 313 314 /** 315 * scsi_dev_info_list_add - add one dev_info list entry. 316 * @compatible: if true, null terminate short strings. Otherwise space pad. 317 * @vendor: vendor string 318 * @model: model (product) string 319 * @strflags: integer string 320 * @flags: if strflags NULL, use this flag value 321 * 322 * Description: 323 * Create and add one dev_info entry for @vendor, @model, @strflags or 324 * @flag. If @compatible, add to the tail of the list, do not space 325 * pad, and set devinfo->compatible. The scsi_static_device_list entries 326 * are added with @compatible 1 and @clfags NULL. 327 * 328 * Returns: 0 OK, -error on failure. 329 **/ 330 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 331 char *strflags, int flags) 332 { 333 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 334 strflags, flags, 335 SCSI_DEVINFO_GLOBAL); 336 } 337 338 /** 339 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 340 * @compatible: if true, null terminate short strings. Otherwise space pad. 341 * @vendor: vendor string 342 * @model: model (product) string 343 * @strflags: integer string 344 * @flags: if strflags NULL, use this flag value 345 * @key: specify list to use 346 * 347 * Description: 348 * Create and add one dev_info entry for @vendor, @model, 349 * @strflags or @flag in list specified by @key. If @compatible, 350 * add to the tail of the list, do not space pad, and set 351 * devinfo->compatible. The scsi_static_device_list entries are 352 * added with @compatible 1 and @clfags NULL. 353 * 354 * Returns: 0 OK, -error on failure. 355 **/ 356 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 357 char *strflags, int flags, int key) 358 { 359 struct scsi_dev_info_list *devinfo; 360 struct scsi_dev_info_list_table *devinfo_table = 361 scsi_devinfo_lookup_by_key(key); 362 363 if (IS_ERR(devinfo_table)) 364 return PTR_ERR(devinfo_table); 365 366 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 367 if (!devinfo) { 368 printk(KERN_ERR "%s: no memory\n", __func__); 369 return -ENOMEM; 370 } 371 372 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 373 vendor, compatible); 374 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 375 model, compatible); 376 377 if (strflags) 378 devinfo->flags = simple_strtoul(strflags, NULL, 0); 379 else 380 devinfo->flags = flags; 381 382 devinfo->compatible = compatible; 383 384 if (compatible) 385 list_add_tail(&devinfo->dev_info_list, 386 &devinfo_table->scsi_dev_info_list); 387 else 388 list_add(&devinfo->dev_info_list, 389 &devinfo_table->scsi_dev_info_list); 390 391 return 0; 392 } 393 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 394 395 /** 396 * scsi_dev_info_list_find - find a matching dev_info list entry. 397 * @vendor: vendor string 398 * @model: model (product) string 399 * @key: specify list to use 400 * 401 * Description: 402 * Finds the first dev_info entry matching @vendor, @model 403 * in list specified by @key. 404 * 405 * Returns: pointer to matching entry, or ERR_PTR on failure. 406 **/ 407 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 408 const char *model, int key) 409 { 410 struct scsi_dev_info_list *devinfo; 411 struct scsi_dev_info_list_table *devinfo_table = 412 scsi_devinfo_lookup_by_key(key); 413 size_t vmax, mmax; 414 const char *vskip, *mskip; 415 416 if (IS_ERR(devinfo_table)) 417 return (struct scsi_dev_info_list *) devinfo_table; 418 419 /* Prepare for "compatible" matches */ 420 421 /* 422 * XXX why skip leading spaces? If an odd INQUIRY 423 * value, that should have been part of the 424 * scsi_static_device_list[] entry, such as " FOO" 425 * rather than "FOO". Since this code is already 426 * here, and we don't know what device it is 427 * trying to work with, leave it as-is. 428 */ 429 vmax = 8; /* max length of vendor */ 430 vskip = vendor; 431 while (vmax > 0 && *vskip == ' ') { 432 vmax--; 433 vskip++; 434 } 435 /* Also skip trailing spaces */ 436 while (vmax > 0 && vskip[vmax - 1] == ' ') 437 --vmax; 438 439 mmax = 16; /* max length of model */ 440 mskip = model; 441 while (mmax > 0 && *mskip == ' ') { 442 mmax--; 443 mskip++; 444 } 445 while (mmax > 0 && mskip[mmax - 1] == ' ') 446 --mmax; 447 448 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 449 dev_info_list) { 450 if (devinfo->compatible) { 451 /* 452 * Behave like the older version of get_device_flags. 453 */ 454 if (memcmp(devinfo->vendor, vskip, vmax) || 455 devinfo->vendor[vmax]) 456 continue; 457 if (memcmp(devinfo->model, mskip, mmax) || 458 devinfo->model[mmax]) 459 continue; 460 return devinfo; 461 } else { 462 if (!memcmp(devinfo->vendor, vendor, 463 sizeof(devinfo->vendor)) && 464 !memcmp(devinfo->model, model, 465 sizeof(devinfo->model))) 466 return devinfo; 467 } 468 } 469 470 return ERR_PTR(-ENOENT); 471 } 472 473 /** 474 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 475 * @vendor: vendor string 476 * @model: model (product) string 477 * @key: specify list to use 478 * 479 * Description: 480 * Remove and destroy one dev_info entry for @vendor, @model 481 * in list specified by @key. 482 * 483 * Returns: 0 OK, -error on failure. 484 **/ 485 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 486 { 487 struct scsi_dev_info_list *found; 488 489 found = scsi_dev_info_list_find(vendor, model, key); 490 if (IS_ERR(found)) 491 return PTR_ERR(found); 492 493 list_del(&found->dev_info_list); 494 kfree(found); 495 return 0; 496 } 497 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 498 499 /** 500 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 501 * @dev_list: string of device flags to add 502 * 503 * Description: 504 * Parse dev_list, and add entries to the scsi_dev_info_list. 505 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 506 * dev_list is modified via strsep. Can be called for command line 507 * addition, for proc or mabye a sysfs interface. 508 * 509 * Returns: 0 if OK, -error on failure. 510 **/ 511 static int scsi_dev_info_list_add_str(char *dev_list) 512 { 513 char *vendor, *model, *strflags, *next; 514 char *next_check; 515 int res = 0; 516 517 next = dev_list; 518 if (next && next[0] == '"') { 519 /* 520 * Ignore both the leading and trailing quote. 521 */ 522 next++; 523 next_check = ",\""; 524 } else { 525 next_check = ","; 526 } 527 528 /* 529 * For the leading and trailing '"' case, the for loop comes 530 * through the last time with vendor[0] == '\0'. 531 */ 532 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 533 && (res == 0); vendor = strsep(&next, ":")) { 534 strflags = NULL; 535 model = strsep(&next, ":"); 536 if (model) 537 strflags = strsep(&next, next_check); 538 if (!model || !strflags) { 539 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 540 " '%s'\n", __func__, vendor, model, 541 strflags); 542 res = -EINVAL; 543 } else 544 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 545 model, strflags, 0); 546 } 547 return res; 548 } 549 550 /** 551 * get_device_flags - get device specific flags from the dynamic device list. 552 * @sdev: &scsi_device to get flags for 553 * @vendor: vendor name 554 * @model: model name 555 * 556 * Description: 557 * Search the global scsi_dev_info_list (specified by list zero) 558 * for an entry matching @vendor and @model, if found, return the 559 * matching flags value, else return the host or global default 560 * settings. Called during scan time. 561 **/ 562 int scsi_get_device_flags(struct scsi_device *sdev, 563 const unsigned char *vendor, 564 const unsigned char *model) 565 { 566 return scsi_get_device_flags_keyed(sdev, vendor, model, 567 SCSI_DEVINFO_GLOBAL); 568 } 569 570 571 /** 572 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 573 * @sdev: &scsi_device to get flags for 574 * @vendor: vendor name 575 * @model: model name 576 * @key: list to look up 577 * 578 * Description: 579 * Search the scsi_dev_info_list specified by @key for an entry 580 * matching @vendor and @model, if found, return the matching 581 * flags value, else return the host or global default settings. 582 * Called during scan time. 583 **/ 584 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 585 const unsigned char *vendor, 586 const unsigned char *model, 587 int key) 588 { 589 struct scsi_dev_info_list *devinfo; 590 int err; 591 592 devinfo = scsi_dev_info_list_find(vendor, model, key); 593 if (!IS_ERR(devinfo)) 594 return devinfo->flags; 595 596 err = PTR_ERR(devinfo); 597 if (err != -ENOENT) 598 return err; 599 600 /* nothing found, return nothing */ 601 if (key != SCSI_DEVINFO_GLOBAL) 602 return 0; 603 604 /* except for the global list, where we have an exception */ 605 if (sdev->sdev_bflags) 606 return sdev->sdev_bflags; 607 608 return scsi_default_dev_flags; 609 } 610 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 611 612 #ifdef CONFIG_SCSI_PROC_FS 613 struct double_list { 614 struct list_head *top; 615 struct list_head *bottom; 616 }; 617 618 static int devinfo_seq_show(struct seq_file *m, void *v) 619 { 620 struct double_list *dl = v; 621 struct scsi_dev_info_list_table *devinfo_table = 622 list_entry(dl->top, struct scsi_dev_info_list_table, node); 623 struct scsi_dev_info_list *devinfo = 624 list_entry(dl->bottom, struct scsi_dev_info_list, 625 dev_info_list); 626 627 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 628 devinfo_table->name) 629 seq_printf(m, "[%s]:\n", devinfo_table->name); 630 631 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 632 devinfo->vendor, devinfo->model, devinfo->flags); 633 return 0; 634 } 635 636 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 637 { 638 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 639 loff_t pos = *ppos; 640 641 if (!dl) 642 return NULL; 643 644 list_for_each(dl->top, &scsi_dev_info_list) { 645 struct scsi_dev_info_list_table *devinfo_table = 646 list_entry(dl->top, struct scsi_dev_info_list_table, 647 node); 648 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 649 if (pos-- == 0) 650 return dl; 651 } 652 653 kfree(dl); 654 return NULL; 655 } 656 657 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 658 { 659 struct double_list *dl = v; 660 struct scsi_dev_info_list_table *devinfo_table = 661 list_entry(dl->top, struct scsi_dev_info_list_table, node); 662 663 ++*ppos; 664 dl->bottom = dl->bottom->next; 665 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 666 dl->top = dl->top->next; 667 if (dl->top == &scsi_dev_info_list) { 668 kfree(dl); 669 return NULL; 670 } 671 devinfo_table = list_entry(dl->top, 672 struct scsi_dev_info_list_table, 673 node); 674 dl->bottom = devinfo_table->scsi_dev_info_list.next; 675 } 676 677 return dl; 678 } 679 680 static void devinfo_seq_stop(struct seq_file *m, void *v) 681 { 682 kfree(v); 683 } 684 685 static const struct seq_operations scsi_devinfo_seq_ops = { 686 .start = devinfo_seq_start, 687 .next = devinfo_seq_next, 688 .stop = devinfo_seq_stop, 689 .show = devinfo_seq_show, 690 }; 691 692 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 693 { 694 return seq_open(file, &scsi_devinfo_seq_ops); 695 } 696 697 /* 698 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 699 * 700 * Description: Adds a black/white list entry for vendor and model with an 701 * integer value of flag to the scsi device info list. 702 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 703 */ 704 static ssize_t proc_scsi_devinfo_write(struct file *file, 705 const char __user *buf, 706 size_t length, loff_t *ppos) 707 { 708 char *buffer; 709 ssize_t err = length; 710 711 if (!buf || length>PAGE_SIZE) 712 return -EINVAL; 713 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 714 return -ENOMEM; 715 if (copy_from_user(buffer, buf, length)) { 716 err =-EFAULT; 717 goto out; 718 } 719 720 if (length < PAGE_SIZE) 721 buffer[length] = '\0'; 722 else if (buffer[PAGE_SIZE-1]) { 723 err = -EINVAL; 724 goto out; 725 } 726 727 scsi_dev_info_list_add_str(buffer); 728 729 out: 730 free_page((unsigned long)buffer); 731 return err; 732 } 733 734 static const struct file_operations scsi_devinfo_proc_fops = { 735 .owner = THIS_MODULE, 736 .open = proc_scsi_devinfo_open, 737 .read = seq_read, 738 .write = proc_scsi_devinfo_write, 739 .llseek = seq_lseek, 740 .release = seq_release, 741 }; 742 #endif /* CONFIG_SCSI_PROC_FS */ 743 744 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 745 MODULE_PARM_DESC(dev_flags, 746 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 747 " list entries for vendor and model with an integer value of flags" 748 " to the scsi device info list"); 749 750 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 751 MODULE_PARM_DESC(default_dev_flags, 752 "scsi default device flag integer value"); 753 754 /** 755 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 756 **/ 757 void scsi_exit_devinfo(void) 758 { 759 #ifdef CONFIG_SCSI_PROC_FS 760 remove_proc_entry("scsi/device_info", NULL); 761 #endif 762 763 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 764 } 765 766 /** 767 * scsi_dev_info_add_list - add a new devinfo list 768 * @key: key of the list to add 769 * @name: Name of the list to add (for /proc/scsi/device_info) 770 * 771 * Adds the requested list, returns zero on success, -EEXIST if the 772 * key is already registered to a list, or other error on failure. 773 */ 774 int scsi_dev_info_add_list(int key, const char *name) 775 { 776 struct scsi_dev_info_list_table *devinfo_table = 777 scsi_devinfo_lookup_by_key(key); 778 779 if (!IS_ERR(devinfo_table)) 780 /* list already exists */ 781 return -EEXIST; 782 783 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 784 785 if (!devinfo_table) 786 return -ENOMEM; 787 788 INIT_LIST_HEAD(&devinfo_table->node); 789 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 790 devinfo_table->name = name; 791 devinfo_table->key = key; 792 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 793 794 return 0; 795 } 796 EXPORT_SYMBOL(scsi_dev_info_add_list); 797 798 /** 799 * scsi_dev_info_remove_list - destroy an added devinfo list 800 * @key: key of the list to destroy 801 * 802 * Iterates over the entire list first, freeing all the values, then 803 * frees the list itself. Returns 0 on success or -EINVAL if the key 804 * can't be found. 805 */ 806 int scsi_dev_info_remove_list(int key) 807 { 808 struct list_head *lh, *lh_next; 809 struct scsi_dev_info_list_table *devinfo_table = 810 scsi_devinfo_lookup_by_key(key); 811 812 if (IS_ERR(devinfo_table)) 813 /* no such list */ 814 return -EINVAL; 815 816 /* remove from the master list */ 817 list_del(&devinfo_table->node); 818 819 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 820 struct scsi_dev_info_list *devinfo; 821 822 devinfo = list_entry(lh, struct scsi_dev_info_list, 823 dev_info_list); 824 kfree(devinfo); 825 } 826 kfree(devinfo_table); 827 828 return 0; 829 } 830 EXPORT_SYMBOL(scsi_dev_info_remove_list); 831 832 /** 833 * scsi_init_devinfo - set up the dynamic device list. 834 * 835 * Description: 836 * Add command line entries from scsi_dev_flags, then add 837 * scsi_static_device_list entries to the scsi device info list. 838 */ 839 int __init scsi_init_devinfo(void) 840 { 841 #ifdef CONFIG_SCSI_PROC_FS 842 struct proc_dir_entry *p; 843 #endif 844 int error, i; 845 846 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 847 if (error) 848 return error; 849 850 error = scsi_dev_info_list_add_str(scsi_dev_flags); 851 if (error) 852 goto out; 853 854 for (i = 0; scsi_static_device_list[i].vendor; i++) { 855 error = scsi_dev_info_list_add(1 /* compatibile */, 856 scsi_static_device_list[i].vendor, 857 scsi_static_device_list[i].model, 858 NULL, 859 scsi_static_device_list[i].flags); 860 if (error) 861 goto out; 862 } 863 864 #ifdef CONFIG_SCSI_PROC_FS 865 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 866 if (!p) { 867 error = -ENOMEM; 868 goto out; 869 } 870 #endif /* CONFIG_SCSI_PROC_FS */ 871 872 out: 873 if (error) 874 scsi_exit_devinfo(); 875 return error; 876 } 877