1 2 #include <linux/blkdev.h> 3 #include <linux/init.h> 4 #include <linux/kernel.h> 5 #include <linux/module.h> 6 #include <linux/moduleparam.h> 7 #include <linux/proc_fs.h> 8 #include <linux/seq_file.h> 9 #include <linux/slab.h> 10 11 #include <scsi/scsi_device.h> 12 #include <scsi/scsi_devinfo.h> 13 14 #include "scsi_priv.h" 15 16 17 /* 18 * scsi_dev_info_list: structure to hold black/white listed devices. 19 */ 20 struct scsi_dev_info_list { 21 struct list_head dev_info_list; 22 char vendor[8]; 23 char model[16]; 24 unsigned flags; 25 unsigned compatible; /* for use with scsi_static_device_list entries */ 26 }; 27 28 struct scsi_dev_info_list_table { 29 struct list_head node; /* our node for being on the master list */ 30 struct list_head scsi_dev_info_list; /* head of dev info list */ 31 const char *name; /* name of list for /proc (NULL for global) */ 32 int key; /* unique numeric identifier */ 33 }; 34 35 36 static const char spaces[] = " "; /* 16 of them */ 37 static unsigned scsi_default_dev_flags; 38 static LIST_HEAD(scsi_dev_info_list); 39 static char scsi_dev_flags[256]; 40 41 /* 42 * scsi_static_device_list: deprecated list of devices that require 43 * settings that differ from the default, includes black-listed (broken) 44 * devices. The entries here are added to the tail of scsi_dev_info_list 45 * via scsi_dev_info_list_init. 46 * 47 * Do not add to this list, use the command line or proc interface to add 48 * to the scsi_dev_info_list. This table will eventually go away. 49 */ 50 static struct { 51 char *vendor; 52 char *model; 53 char *revision; /* revision known to be bad, unused */ 54 unsigned flags; 55 } scsi_static_device_list[] __initdata = { 56 /* 57 * The following devices are known not to tolerate a lun != 0 scan 58 * for one reason or another. Some will respond to all luns, 59 * others will lock up. 60 */ 61 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ 62 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ 63 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ 64 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ 65 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ 66 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ 67 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */ 68 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */ 69 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ 70 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ 71 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ 72 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ 73 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ 74 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ 75 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ 76 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ 77 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ 78 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ 79 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ 80 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ 81 /* 82 * The following causes a failed REQUEST SENSE on lun 1 for 83 * aha152x controller, which causes SCSI code to reset bus. 84 */ 85 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, 86 /* 87 * The following causes a failed REQUEST SENSE on lun 1 for 88 * aha152x controller, which causes SCSI code to reset bus. 89 */ 90 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, 91 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ 92 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ 93 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, 94 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, 95 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, 96 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, 97 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, 98 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ 99 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ 100 /* 101 * The following causes a failed REQUEST SENSE on lun 1 for 102 * seagate controller, which causes SCSI code to reset bus. 103 */ 104 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, 105 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ 106 /* 107 * The following causes a failed REQUEST SENSE on lun 1 for 108 * seagate controller, which causes SCSI code to reset bus. 109 */ 110 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ 111 {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */ 112 {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */ 113 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ 114 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ 115 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ 116 {"NEC", "D3856", "0009", BLIST_NOLUN}, 117 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ 118 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ 119 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ 120 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ 121 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ 122 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN}, 123 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, 124 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ 125 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ 126 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ 127 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ 128 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ 129 130 /* 131 * Other types of devices that have special flags. 132 * Note that all USB devices should have the BLIST_INQUIRY_36 flag. 133 */ 134 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, 135 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, 136 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, 137 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 138 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 139 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, 140 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 141 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 142 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 143 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 144 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 145 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 146 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 147 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 148 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 149 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 150 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 151 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 152 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 153 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 154 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 155 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 156 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 157 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 158 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 159 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 160 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ 161 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ 162 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 163 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, 164 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 165 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 166 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 167 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 168 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 169 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 170 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 171 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 172 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 173 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 174 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 175 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, 176 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, 177 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 178 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 179 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 180 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 181 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 182 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 183 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 184 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 185 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 186 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 187 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 188 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 189 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 190 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 192 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 193 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 194 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 195 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 196 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 197 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 198 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 199 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 200 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 201 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 202 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 203 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 204 {"INSITE", "I325VM", NULL, BLIST_KEY}, 205 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 206 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 207 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 208 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 209 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 210 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 211 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 212 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 213 {"MICROP", "4110", NULL, BLIST_NOTQ}, 214 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC}, 215 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 216 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 217 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 221 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 223 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 224 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 225 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 226 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 227 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 228 {"Promise", "", NULL, BLIST_SPARSELUN}, 229 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 230 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 231 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 232 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 233 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 234 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 235 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 236 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 237 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 238 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 242 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 243 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 244 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 245 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 246 {"SUN", "T300", "*", BLIST_SPARSELUN}, 247 {"SUN", "T4", "*", BLIST_SPARSELUN}, 248 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 249 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 250 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 251 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 252 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 253 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 254 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 255 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 256 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 257 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 258 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 259 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 260 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 261 { NULL, NULL, NULL, 0 }, 262 }; 263 264 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 265 { 266 struct scsi_dev_info_list_table *devinfo_table; 267 int found = 0; 268 269 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 270 if (devinfo_table->key == key) { 271 found = 1; 272 break; 273 } 274 if (!found) 275 return ERR_PTR(-EINVAL); 276 277 return devinfo_table; 278 } 279 280 /* 281 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 282 * devinfo vendor and model strings. 283 */ 284 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 285 char *from, int compatible) 286 { 287 size_t from_length; 288 289 from_length = strlen(from); 290 strncpy(to, from, min(to_length, from_length)); 291 if (from_length < to_length) { 292 if (compatible) { 293 /* 294 * NUL terminate the string if it is short. 295 */ 296 to[from_length] = '\0'; 297 } else { 298 /* 299 * space pad the string if it is short. 300 */ 301 strncpy(&to[from_length], spaces, 302 to_length - from_length); 303 } 304 } 305 if (from_length > to_length) 306 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 307 __func__, name, from); 308 } 309 310 /** 311 * scsi_dev_info_list_add - add one dev_info list entry. 312 * @compatible: if true, null terminate short strings. Otherwise space pad. 313 * @vendor: vendor string 314 * @model: model (product) string 315 * @strflags: integer string 316 * @flags: if strflags NULL, use this flag value 317 * 318 * Description: 319 * Create and add one dev_info entry for @vendor, @model, @strflags or 320 * @flag. If @compatible, add to the tail of the list, do not space 321 * pad, and set devinfo->compatible. The scsi_static_device_list entries 322 * are added with @compatible 1 and @clfags NULL. 323 * 324 * Returns: 0 OK, -error on failure. 325 **/ 326 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 327 char *strflags, int flags) 328 { 329 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 330 strflags, flags, 331 SCSI_DEVINFO_GLOBAL); 332 } 333 334 /** 335 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 336 * @compatible: if true, null terminate short strings. Otherwise space pad. 337 * @vendor: vendor string 338 * @model: model (product) string 339 * @strflags: integer string 340 * @flags: if strflags NULL, use this flag value 341 * @key: specify list to use 342 * 343 * Description: 344 * Create and add one dev_info entry for @vendor, @model, 345 * @strflags or @flag in list specified by @key. If @compatible, 346 * add to the tail of the list, do not space pad, and set 347 * devinfo->compatible. The scsi_static_device_list entries are 348 * added with @compatible 1 and @clfags NULL. 349 * 350 * Returns: 0 OK, -error on failure. 351 **/ 352 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 353 char *strflags, int flags, int key) 354 { 355 struct scsi_dev_info_list *devinfo; 356 struct scsi_dev_info_list_table *devinfo_table = 357 scsi_devinfo_lookup_by_key(key); 358 359 if (IS_ERR(devinfo_table)) 360 return PTR_ERR(devinfo_table); 361 362 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 363 if (!devinfo) { 364 printk(KERN_ERR "%s: no memory\n", __func__); 365 return -ENOMEM; 366 } 367 368 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 369 vendor, compatible); 370 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 371 model, compatible); 372 373 if (strflags) 374 devinfo->flags = simple_strtoul(strflags, NULL, 0); 375 else 376 devinfo->flags = flags; 377 378 devinfo->compatible = compatible; 379 380 if (compatible) 381 list_add_tail(&devinfo->dev_info_list, 382 &devinfo_table->scsi_dev_info_list); 383 else 384 list_add(&devinfo->dev_info_list, 385 &devinfo_table->scsi_dev_info_list); 386 387 return 0; 388 } 389 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 390 391 /** 392 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 393 * @vendor: vendor string 394 * @model: model (product) string 395 * @key: specify list to use 396 * 397 * Description: 398 * Remove and destroy one dev_info entry for @vendor, @model 399 * in list specified by @key. 400 * 401 * Returns: 0 OK, -error on failure. 402 **/ 403 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 404 { 405 struct scsi_dev_info_list *devinfo, *found = NULL; 406 struct scsi_dev_info_list_table *devinfo_table = 407 scsi_devinfo_lookup_by_key(key); 408 409 if (IS_ERR(devinfo_table)) 410 return PTR_ERR(devinfo_table); 411 412 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 413 dev_info_list) { 414 if (devinfo->compatible) { 415 /* 416 * Behave like the older version of get_device_flags. 417 */ 418 size_t max; 419 /* 420 * XXX why skip leading spaces? If an odd INQUIRY 421 * value, that should have been part of the 422 * scsi_static_device_list[] entry, such as " FOO" 423 * rather than "FOO". Since this code is already 424 * here, and we don't know what device it is 425 * trying to work with, leave it as-is. 426 */ 427 max = 8; /* max length of vendor */ 428 while ((max > 0) && *vendor == ' ') { 429 max--; 430 vendor++; 431 } 432 /* 433 * XXX removing the following strlen() would be 434 * good, using it means that for a an entry not in 435 * the list, we scan every byte of every vendor 436 * listed in scsi_static_device_list[], and never match 437 * a single one (and still have to compare at 438 * least the first byte of each vendor). 439 */ 440 if (memcmp(devinfo->vendor, vendor, 441 min(max, strlen(devinfo->vendor)))) 442 continue; 443 /* 444 * Skip spaces again. 445 */ 446 max = 16; /* max length of model */ 447 while ((max > 0) && *model == ' ') { 448 max--; 449 model++; 450 } 451 if (memcmp(devinfo->model, model, 452 min(max, strlen(devinfo->model)))) 453 continue; 454 found = devinfo; 455 } else { 456 if (!memcmp(devinfo->vendor, vendor, 457 sizeof(devinfo->vendor)) && 458 !memcmp(devinfo->model, model, 459 sizeof(devinfo->model))) 460 found = devinfo; 461 } 462 if (found) 463 break; 464 } 465 466 if (found) { 467 list_del(&found->dev_info_list); 468 kfree(found); 469 return 0; 470 } 471 472 return -ENOENT; 473 } 474 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 475 476 /** 477 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 478 * @dev_list: string of device flags to add 479 * 480 * Description: 481 * Parse dev_list, and add entries to the scsi_dev_info_list. 482 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 483 * dev_list is modified via strsep. Can be called for command line 484 * addition, for proc or mabye a sysfs interface. 485 * 486 * Returns: 0 if OK, -error on failure. 487 **/ 488 static int scsi_dev_info_list_add_str(char *dev_list) 489 { 490 char *vendor, *model, *strflags, *next; 491 char *next_check; 492 int res = 0; 493 494 next = dev_list; 495 if (next && next[0] == '"') { 496 /* 497 * Ignore both the leading and trailing quote. 498 */ 499 next++; 500 next_check = ",\""; 501 } else { 502 next_check = ","; 503 } 504 505 /* 506 * For the leading and trailing '"' case, the for loop comes 507 * through the last time with vendor[0] == '\0'. 508 */ 509 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 510 && (res == 0); vendor = strsep(&next, ":")) { 511 strflags = NULL; 512 model = strsep(&next, ":"); 513 if (model) 514 strflags = strsep(&next, next_check); 515 if (!model || !strflags) { 516 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 517 " '%s'\n", __func__, vendor, model, 518 strflags); 519 res = -EINVAL; 520 } else 521 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 522 model, strflags, 0); 523 } 524 return res; 525 } 526 527 /** 528 * get_device_flags - get device specific flags from the dynamic device list. 529 * @sdev: &scsi_device to get flags for 530 * @vendor: vendor name 531 * @model: model name 532 * 533 * Description: 534 * Search the global scsi_dev_info_list (specified by list zero) 535 * for an entry matching @vendor and @model, if found, return the 536 * matching flags value, else return the host or global default 537 * settings. Called during scan time. 538 **/ 539 int scsi_get_device_flags(struct scsi_device *sdev, 540 const unsigned char *vendor, 541 const unsigned char *model) 542 { 543 return scsi_get_device_flags_keyed(sdev, vendor, model, 544 SCSI_DEVINFO_GLOBAL); 545 } 546 547 548 /** 549 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 550 * @sdev: &scsi_device to get flags for 551 * @vendor: vendor name 552 * @model: model name 553 * @key: list to look up 554 * 555 * Description: 556 * Search the scsi_dev_info_list specified by @key for an entry 557 * matching @vendor and @model, if found, return the matching 558 * flags value, else return the host or global default settings. 559 * Called during scan time. 560 **/ 561 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 562 const unsigned char *vendor, 563 const unsigned char *model, 564 int key) 565 { 566 struct scsi_dev_info_list *devinfo; 567 struct scsi_dev_info_list_table *devinfo_table; 568 569 devinfo_table = scsi_devinfo_lookup_by_key(key); 570 571 if (IS_ERR(devinfo_table)) 572 return PTR_ERR(devinfo_table); 573 574 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 575 dev_info_list) { 576 if (devinfo->compatible) { 577 /* 578 * Behave like the older version of get_device_flags. 579 */ 580 size_t max; 581 /* 582 * XXX why skip leading spaces? If an odd INQUIRY 583 * value, that should have been part of the 584 * scsi_static_device_list[] entry, such as " FOO" 585 * rather than "FOO". Since this code is already 586 * here, and we don't know what device it is 587 * trying to work with, leave it as-is. 588 */ 589 max = 8; /* max length of vendor */ 590 while ((max > 0) && *vendor == ' ') { 591 max--; 592 vendor++; 593 } 594 /* 595 * XXX removing the following strlen() would be 596 * good, using it means that for a an entry not in 597 * the list, we scan every byte of every vendor 598 * listed in scsi_static_device_list[], and never match 599 * a single one (and still have to compare at 600 * least the first byte of each vendor). 601 */ 602 if (memcmp(devinfo->vendor, vendor, 603 min(max, strlen(devinfo->vendor)))) 604 continue; 605 /* 606 * Skip spaces again. 607 */ 608 max = 16; /* max length of model */ 609 while ((max > 0) && *model == ' ') { 610 max--; 611 model++; 612 } 613 if (memcmp(devinfo->model, model, 614 min(max, strlen(devinfo->model)))) 615 continue; 616 return devinfo->flags; 617 } else { 618 if (!memcmp(devinfo->vendor, vendor, 619 sizeof(devinfo->vendor)) && 620 !memcmp(devinfo->model, model, 621 sizeof(devinfo->model))) 622 return devinfo->flags; 623 } 624 } 625 /* nothing found, return nothing */ 626 if (key != SCSI_DEVINFO_GLOBAL) 627 return 0; 628 629 /* except for the global list, where we have an exception */ 630 if (sdev->sdev_bflags) 631 return sdev->sdev_bflags; 632 633 return scsi_default_dev_flags; 634 } 635 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 636 637 #ifdef CONFIG_SCSI_PROC_FS 638 struct double_list { 639 struct list_head *top; 640 struct list_head *bottom; 641 }; 642 643 static int devinfo_seq_show(struct seq_file *m, void *v) 644 { 645 struct double_list *dl = v; 646 struct scsi_dev_info_list_table *devinfo_table = 647 list_entry(dl->top, struct scsi_dev_info_list_table, node); 648 struct scsi_dev_info_list *devinfo = 649 list_entry(dl->bottom, struct scsi_dev_info_list, 650 dev_info_list); 651 652 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 653 devinfo_table->name) 654 seq_printf(m, "[%s]:\n", devinfo_table->name); 655 656 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 657 devinfo->vendor, devinfo->model, devinfo->flags); 658 return 0; 659 } 660 661 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 662 { 663 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 664 loff_t pos = *ppos; 665 666 if (!dl) 667 return NULL; 668 669 list_for_each(dl->top, &scsi_dev_info_list) { 670 struct scsi_dev_info_list_table *devinfo_table = 671 list_entry(dl->top, struct scsi_dev_info_list_table, 672 node); 673 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 674 if (pos-- == 0) 675 return dl; 676 } 677 678 kfree(dl); 679 return NULL; 680 } 681 682 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 683 { 684 struct double_list *dl = v; 685 struct scsi_dev_info_list_table *devinfo_table = 686 list_entry(dl->top, struct scsi_dev_info_list_table, node); 687 688 ++*ppos; 689 dl->bottom = dl->bottom->next; 690 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 691 dl->top = dl->top->next; 692 if (dl->top == &scsi_dev_info_list) { 693 kfree(dl); 694 return NULL; 695 } 696 devinfo_table = list_entry(dl->top, 697 struct scsi_dev_info_list_table, 698 node); 699 dl->bottom = devinfo_table->scsi_dev_info_list.next; 700 } 701 702 return dl; 703 } 704 705 static void devinfo_seq_stop(struct seq_file *m, void *v) 706 { 707 kfree(v); 708 } 709 710 static const struct seq_operations scsi_devinfo_seq_ops = { 711 .start = devinfo_seq_start, 712 .next = devinfo_seq_next, 713 .stop = devinfo_seq_stop, 714 .show = devinfo_seq_show, 715 }; 716 717 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 718 { 719 return seq_open(file, &scsi_devinfo_seq_ops); 720 } 721 722 /* 723 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 724 * 725 * Description: Adds a black/white list entry for vendor and model with an 726 * integer value of flag to the scsi device info list. 727 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 728 */ 729 static ssize_t proc_scsi_devinfo_write(struct file *file, 730 const char __user *buf, 731 size_t length, loff_t *ppos) 732 { 733 char *buffer; 734 ssize_t err = length; 735 736 if (!buf || length>PAGE_SIZE) 737 return -EINVAL; 738 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 739 return -ENOMEM; 740 if (copy_from_user(buffer, buf, length)) { 741 err =-EFAULT; 742 goto out; 743 } 744 745 if (length < PAGE_SIZE) 746 buffer[length] = '\0'; 747 else if (buffer[PAGE_SIZE-1]) { 748 err = -EINVAL; 749 goto out; 750 } 751 752 scsi_dev_info_list_add_str(buffer); 753 754 out: 755 free_page((unsigned long)buffer); 756 return err; 757 } 758 759 static const struct file_operations scsi_devinfo_proc_fops = { 760 .owner = THIS_MODULE, 761 .open = proc_scsi_devinfo_open, 762 .read = seq_read, 763 .write = proc_scsi_devinfo_write, 764 .llseek = seq_lseek, 765 .release = seq_release, 766 }; 767 #endif /* CONFIG_SCSI_PROC_FS */ 768 769 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 770 MODULE_PARM_DESC(dev_flags, 771 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 772 " list entries for vendor and model with an integer value of flags" 773 " to the scsi device info list"); 774 775 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 776 MODULE_PARM_DESC(default_dev_flags, 777 "scsi default device flag integer value"); 778 779 /** 780 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 781 **/ 782 void scsi_exit_devinfo(void) 783 { 784 #ifdef CONFIG_SCSI_PROC_FS 785 remove_proc_entry("scsi/device_info", NULL); 786 #endif 787 788 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 789 } 790 791 /** 792 * scsi_dev_info_add_list - add a new devinfo list 793 * @key: key of the list to add 794 * @name: Name of the list to add (for /proc/scsi/device_info) 795 * 796 * Adds the requested list, returns zero on success, -EEXIST if the 797 * key is already registered to a list, or other error on failure. 798 */ 799 int scsi_dev_info_add_list(int key, const char *name) 800 { 801 struct scsi_dev_info_list_table *devinfo_table = 802 scsi_devinfo_lookup_by_key(key); 803 804 if (!IS_ERR(devinfo_table)) 805 /* list already exists */ 806 return -EEXIST; 807 808 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 809 810 if (!devinfo_table) 811 return -ENOMEM; 812 813 INIT_LIST_HEAD(&devinfo_table->node); 814 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 815 devinfo_table->name = name; 816 devinfo_table->key = key; 817 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 818 819 return 0; 820 } 821 EXPORT_SYMBOL(scsi_dev_info_add_list); 822 823 /** 824 * scsi_dev_info_remove_list - destroy an added devinfo list 825 * @key: key of the list to destroy 826 * 827 * Iterates over the entire list first, freeing all the values, then 828 * frees the list itself. Returns 0 on success or -EINVAL if the key 829 * can't be found. 830 */ 831 int scsi_dev_info_remove_list(int key) 832 { 833 struct list_head *lh, *lh_next; 834 struct scsi_dev_info_list_table *devinfo_table = 835 scsi_devinfo_lookup_by_key(key); 836 837 if (IS_ERR(devinfo_table)) 838 /* no such list */ 839 return -EINVAL; 840 841 /* remove from the master list */ 842 list_del(&devinfo_table->node); 843 844 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 845 struct scsi_dev_info_list *devinfo; 846 847 devinfo = list_entry(lh, struct scsi_dev_info_list, 848 dev_info_list); 849 kfree(devinfo); 850 } 851 kfree(devinfo_table); 852 853 return 0; 854 } 855 EXPORT_SYMBOL(scsi_dev_info_remove_list); 856 857 /** 858 * scsi_init_devinfo - set up the dynamic device list. 859 * 860 * Description: 861 * Add command line entries from scsi_dev_flags, then add 862 * scsi_static_device_list entries to the scsi device info list. 863 */ 864 int __init scsi_init_devinfo(void) 865 { 866 #ifdef CONFIG_SCSI_PROC_FS 867 struct proc_dir_entry *p; 868 #endif 869 int error, i; 870 871 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 872 if (error) 873 return error; 874 875 error = scsi_dev_info_list_add_str(scsi_dev_flags); 876 if (error) 877 goto out; 878 879 for (i = 0; scsi_static_device_list[i].vendor; i++) { 880 error = scsi_dev_info_list_add(1 /* compatibile */, 881 scsi_static_device_list[i].vendor, 882 scsi_static_device_list[i].model, 883 NULL, 884 scsi_static_device_list[i].flags); 885 if (error) 886 goto out; 887 } 888 889 #ifdef CONFIG_SCSI_PROC_FS 890 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 891 if (!p) { 892 error = -ENOMEM; 893 goto out; 894 } 895 #endif /* CONFIG_SCSI_PROC_FS */ 896 897 out: 898 if (error) 899 scsi_exit_devinfo(); 900 return error; 901 } 902