1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <linux/blkdev.h> 4 #include <linux/init.h> 5 #include <linux/kernel.h> 6 #include <linux/module.h> 7 #include <linux/moduleparam.h> 8 #include <linux/proc_fs.h> 9 #include <linux/seq_file.h> 10 #include <linux/slab.h> 11 12 #include <scsi/scsi_device.h> 13 #include <scsi/scsi_devinfo.h> 14 15 #include "scsi_priv.h" 16 17 18 /* 19 * scsi_dev_info_list: structure to hold black/white listed devices. 20 */ 21 struct scsi_dev_info_list { 22 struct list_head dev_info_list; 23 char vendor[8]; 24 char model[16]; 25 blist_flags_t flags; 26 unsigned compatible; /* for use with scsi_static_device_list entries */ 27 }; 28 29 struct scsi_dev_info_list_table { 30 struct list_head node; /* our node for being on the master list */ 31 struct list_head scsi_dev_info_list; /* head of dev info list */ 32 const char *name; /* name of list for /proc (NULL for global) */ 33 int key; /* unique numeric identifier */ 34 }; 35 36 37 static blist_flags_t 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 blist_flags_t 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", NULL, BLIST_NOLUN}, /* scanjet iip */ 112 {"HP", "C2500A", NULL, 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 | BLIST_BORKEN}, 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 {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES}, 138 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 139 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 140 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, 141 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 142 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 143 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 144 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 145 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 146 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 147 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 148 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 149 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 150 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 151 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 152 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 153 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 154 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 155 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 156 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 157 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 158 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 159 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 160 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 161 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, storage on LUN 0 */ 162 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */ 163 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 164 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 165 BLIST_REPORTLUN2 | BLIST_RETRY_ITF}, 166 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 167 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 168 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 169 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 170 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 171 {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1}, 172 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 173 {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */ 174 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 175 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 177 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, 178 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 179 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 180 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */ 181 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 182 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 183 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 184 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 185 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 186 {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 187 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 188 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 189 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 190 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 191 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 192 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 193 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 194 {"INSITE", "I325VM", NULL, BLIST_KEY}, 195 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 196 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 197 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 198 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 199 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 200 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 201 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 202 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 203 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 204 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 205 {"MICROP", "4110", NULL, BLIST_NOTQ}, 206 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC}, 207 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 208 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 209 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 210 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 211 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 212 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 213 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 216 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 220 {"Promise", "", NULL, BLIST_SPARSELUN}, 221 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 222 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 223 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 224 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 225 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 226 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 227 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 228 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 229 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 230 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 231 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 232 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 233 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 234 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 235 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 236 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"LENOVO", "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 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 249 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 250 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 251 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 252 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 253 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 254 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 255 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 256 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 257 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 258 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 259 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 260 { NULL, NULL, NULL, 0 }, 261 }; 262 263 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 264 { 265 struct scsi_dev_info_list_table *devinfo_table; 266 int found = 0; 267 268 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 269 if (devinfo_table->key == key) { 270 found = 1; 271 break; 272 } 273 if (!found) 274 return ERR_PTR(-EINVAL); 275 276 return devinfo_table; 277 } 278 279 /* 280 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 281 * devinfo vendor and model strings. 282 */ 283 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 284 char *from, int compatible) 285 { 286 size_t from_length; 287 288 from_length = strlen(from); 289 /* This zero-pads the destination */ 290 strncpy(to, from, to_length); 291 if (from_length < to_length && !compatible) { 292 /* 293 * space pad the string if it is short. 294 */ 295 memset(&to[from_length], ' ', to_length - from_length); 296 } 297 if (from_length > to_length) 298 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 299 __func__, name, from); 300 } 301 302 /** 303 * scsi_dev_info_list_add - add one dev_info list entry. 304 * @compatible: if true, null terminate short strings. Otherwise space pad. 305 * @vendor: vendor string 306 * @model: model (product) string 307 * @strflags: integer string 308 * @flags: if strflags NULL, use this flag value 309 * 310 * Description: 311 * Create and add one dev_info entry for @vendor, @model, @strflags or 312 * @flag. If @compatible, add to the tail of the list, do not space 313 * pad, and set devinfo->compatible. The scsi_static_device_list entries 314 * are added with @compatible 1 and @clfags NULL. 315 * 316 * Returns: 0 OK, -error on failure. 317 **/ 318 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 319 char *strflags, blist_flags_t flags) 320 { 321 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 322 strflags, flags, 323 SCSI_DEVINFO_GLOBAL); 324 } 325 326 /** 327 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 328 * @compatible: if true, null terminate short strings. Otherwise space pad. 329 * @vendor: vendor string 330 * @model: model (product) string 331 * @strflags: integer string 332 * @flags: if strflags NULL, use this flag value 333 * @key: specify list to use 334 * 335 * Description: 336 * Create and add one dev_info entry for @vendor, @model, 337 * @strflags or @flag in list specified by @key. If @compatible, 338 * add to the tail of the list, do not space pad, and set 339 * devinfo->compatible. The scsi_static_device_list entries are 340 * added with @compatible 1 and @clfags NULL. 341 * 342 * Returns: 0 OK, -error on failure. 343 **/ 344 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 345 char *strflags, blist_flags_t flags, 346 enum scsi_devinfo_key key) 347 { 348 struct scsi_dev_info_list *devinfo; 349 struct scsi_dev_info_list_table *devinfo_table = 350 scsi_devinfo_lookup_by_key(key); 351 352 if (IS_ERR(devinfo_table)) 353 return PTR_ERR(devinfo_table); 354 355 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 356 if (!devinfo) { 357 printk(KERN_ERR "%s: no memory\n", __func__); 358 return -ENOMEM; 359 } 360 361 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 362 vendor, compatible); 363 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 364 model, compatible); 365 366 if (strflags) { 367 unsigned long long val; 368 int ret = kstrtoull(strflags, 0, &val); 369 370 if (ret != 0) { 371 kfree(devinfo); 372 return ret; 373 } 374 flags = (__force blist_flags_t)val; 375 } 376 if (flags & __BLIST_UNUSED_MASK) { 377 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 378 vendor, model, flags & __BLIST_UNUSED_MASK); 379 kfree(devinfo); 380 return -EINVAL; 381 } 382 devinfo->flags = flags; 383 devinfo->compatible = compatible; 384 385 if (compatible) 386 list_add_tail(&devinfo->dev_info_list, 387 &devinfo_table->scsi_dev_info_list); 388 else 389 list_add(&devinfo->dev_info_list, 390 &devinfo_table->scsi_dev_info_list); 391 392 return 0; 393 } 394 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 395 396 /** 397 * scsi_dev_info_list_find - find a matching dev_info list entry. 398 * @vendor: full vendor string 399 * @model: full model (product) string 400 * @key: specify list to use 401 * 402 * Description: 403 * Finds the first dev_info entry matching @vendor, @model 404 * in list specified by @key. 405 * 406 * Returns: pointer to matching entry, or ERR_PTR on failure. 407 **/ 408 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 409 const char *model, enum scsi_devinfo_key key) 410 { 411 struct scsi_dev_info_list *devinfo; 412 struct scsi_dev_info_list_table *devinfo_table = 413 scsi_devinfo_lookup_by_key(key); 414 size_t vmax, mmax, mlen; 415 const char *vskip, *mskip; 416 417 if (IS_ERR(devinfo_table)) 418 return (struct scsi_dev_info_list *) devinfo_table; 419 420 /* Prepare for "compatible" matches */ 421 422 /* 423 * XXX why skip leading spaces? If an odd INQUIRY 424 * value, that should have been part of the 425 * scsi_static_device_list[] entry, such as " FOO" 426 * rather than "FOO". Since this code is already 427 * here, and we don't know what device it is 428 * trying to work with, leave it as-is. 429 */ 430 vmax = sizeof(devinfo->vendor); 431 vskip = vendor; 432 while (vmax > 0 && *vskip == ' ') { 433 vmax--; 434 vskip++; 435 } 436 /* Also skip trailing spaces */ 437 while (vmax > 0 && vskip[vmax - 1] == ' ') 438 --vmax; 439 440 mmax = sizeof(devinfo->model); 441 mskip = model; 442 while (mmax > 0 && *mskip == ' ') { 443 mmax--; 444 mskip++; 445 } 446 while (mmax > 0 && mskip[mmax - 1] == ' ') 447 --mmax; 448 449 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 450 dev_info_list) { 451 if (devinfo->compatible) { 452 /* 453 * vendor strings must be an exact match 454 */ 455 if (vmax != strnlen(devinfo->vendor, 456 sizeof(devinfo->vendor)) || 457 memcmp(devinfo->vendor, vskip, vmax)) 458 continue; 459 460 /* 461 * @model specifies the full string, and 462 * must be larger or equal to devinfo->model 463 */ 464 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 465 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 466 continue; 467 return devinfo; 468 } else { 469 if (!memcmp(devinfo->vendor, vendor, 470 sizeof(devinfo->vendor)) && 471 !memcmp(devinfo->model, model, 472 sizeof(devinfo->model))) 473 return devinfo; 474 } 475 } 476 477 return ERR_PTR(-ENOENT); 478 } 479 480 /** 481 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 482 * @vendor: vendor string 483 * @model: model (product) string 484 * @key: specify list to use 485 * 486 * Description: 487 * Remove and destroy one dev_info entry for @vendor, @model 488 * in list specified by @key. 489 * 490 * Returns: 0 OK, -error on failure. 491 **/ 492 int scsi_dev_info_list_del_keyed(char *vendor, char *model, 493 enum scsi_devinfo_key key) 494 { 495 struct scsi_dev_info_list *found; 496 497 found = scsi_dev_info_list_find(vendor, model, key); 498 if (IS_ERR(found)) 499 return PTR_ERR(found); 500 501 list_del(&found->dev_info_list); 502 kfree(found); 503 return 0; 504 } 505 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 506 507 /** 508 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 509 * @dev_list: string of device flags to add 510 * 511 * Description: 512 * Parse dev_list, and add entries to the scsi_dev_info_list. 513 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 514 * dev_list is modified via strsep. Can be called for command line 515 * addition, for proc or mabye a sysfs interface. 516 * 517 * Returns: 0 if OK, -error on failure. 518 **/ 519 static int scsi_dev_info_list_add_str(char *dev_list) 520 { 521 char *vendor, *model, *strflags, *next; 522 char *next_check; 523 int res = 0; 524 525 next = dev_list; 526 if (next && next[0] == '"') { 527 /* 528 * Ignore both the leading and trailing quote. 529 */ 530 next++; 531 next_check = ",\""; 532 } else { 533 next_check = ","; 534 } 535 536 /* 537 * For the leading and trailing '"' case, the for loop comes 538 * through the last time with vendor[0] == '\0'. 539 */ 540 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 541 && (res == 0); vendor = strsep(&next, ":")) { 542 strflags = NULL; 543 model = strsep(&next, ":"); 544 if (model) 545 strflags = strsep(&next, next_check); 546 if (!model || !strflags) { 547 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 548 " '%s'\n", __func__, vendor, model, 549 strflags); 550 res = -EINVAL; 551 } else 552 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 553 model, strflags, 0); 554 } 555 return res; 556 } 557 558 /** 559 * get_device_flags - get device specific flags from the dynamic device list. 560 * @sdev: &scsi_device to get flags for 561 * @vendor: vendor name 562 * @model: model name 563 * 564 * Description: 565 * Search the global scsi_dev_info_list (specified by list zero) 566 * for an entry matching @vendor and @model, if found, return the 567 * matching flags value, else return the host or global default 568 * settings. Called during scan time. 569 **/ 570 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 571 const unsigned char *vendor, 572 const unsigned char *model) 573 { 574 return scsi_get_device_flags_keyed(sdev, vendor, model, 575 SCSI_DEVINFO_GLOBAL); 576 } 577 578 579 /** 580 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 581 * @sdev: &scsi_device to get flags for 582 * @vendor: vendor name 583 * @model: model name 584 * @key: list to look up 585 * 586 * Description: 587 * Search the scsi_dev_info_list specified by @key for an entry 588 * matching @vendor and @model, if found, return the matching 589 * flags value, else return the host or global default settings. 590 * Called during scan time. 591 **/ 592 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 593 const unsigned char *vendor, 594 const unsigned char *model, 595 enum scsi_devinfo_key key) 596 { 597 struct scsi_dev_info_list *devinfo; 598 599 devinfo = scsi_dev_info_list_find(vendor, model, key); 600 if (!IS_ERR(devinfo)) 601 return devinfo->flags; 602 603 /* key or device not found: return nothing */ 604 if (key != SCSI_DEVINFO_GLOBAL) 605 return 0; 606 607 /* except for the global list, where we have an exception */ 608 if (sdev->sdev_bflags) 609 return sdev->sdev_bflags; 610 611 return scsi_default_dev_flags; 612 } 613 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 614 615 #ifdef CONFIG_SCSI_PROC_FS 616 struct double_list { 617 struct list_head *top; 618 struct list_head *bottom; 619 }; 620 621 static int devinfo_seq_show(struct seq_file *m, void *v) 622 { 623 struct double_list *dl = v; 624 struct scsi_dev_info_list_table *devinfo_table = 625 list_entry(dl->top, struct scsi_dev_info_list_table, node); 626 struct scsi_dev_info_list *devinfo = 627 list_entry(dl->bottom, struct scsi_dev_info_list, 628 dev_info_list); 629 630 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 631 devinfo_table->name) 632 seq_printf(m, "[%s]:\n", devinfo_table->name); 633 634 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 635 devinfo->vendor, devinfo->model, devinfo->flags); 636 return 0; 637 } 638 639 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 640 { 641 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 642 loff_t pos = *ppos; 643 644 if (!dl) 645 return NULL; 646 647 list_for_each(dl->top, &scsi_dev_info_list) { 648 struct scsi_dev_info_list_table *devinfo_table = 649 list_entry(dl->top, struct scsi_dev_info_list_table, 650 node); 651 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 652 if (pos-- == 0) 653 return dl; 654 } 655 656 kfree(dl); 657 return NULL; 658 } 659 660 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 661 { 662 struct double_list *dl = v; 663 struct scsi_dev_info_list_table *devinfo_table = 664 list_entry(dl->top, struct scsi_dev_info_list_table, node); 665 666 ++*ppos; 667 dl->bottom = dl->bottom->next; 668 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 669 dl->top = dl->top->next; 670 if (dl->top == &scsi_dev_info_list) { 671 kfree(dl); 672 return NULL; 673 } 674 devinfo_table = list_entry(dl->top, 675 struct scsi_dev_info_list_table, 676 node); 677 dl->bottom = devinfo_table->scsi_dev_info_list.next; 678 } 679 680 return dl; 681 } 682 683 static void devinfo_seq_stop(struct seq_file *m, void *v) 684 { 685 kfree(v); 686 } 687 688 static const struct seq_operations scsi_devinfo_seq_ops = { 689 .start = devinfo_seq_start, 690 .next = devinfo_seq_next, 691 .stop = devinfo_seq_stop, 692 .show = devinfo_seq_show, 693 }; 694 695 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 696 { 697 return seq_open(file, &scsi_devinfo_seq_ops); 698 } 699 700 /* 701 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 702 * 703 * Description: Adds a black/white list entry for vendor and model with an 704 * integer value of flag to the scsi device info list. 705 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 706 */ 707 static ssize_t proc_scsi_devinfo_write(struct file *file, 708 const char __user *buf, 709 size_t length, loff_t *ppos) 710 { 711 char *buffer; 712 ssize_t err = length; 713 714 if (!buf || length>PAGE_SIZE) 715 return -EINVAL; 716 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 717 return -ENOMEM; 718 if (copy_from_user(buffer, buf, length)) { 719 err =-EFAULT; 720 goto out; 721 } 722 723 if (length < PAGE_SIZE) 724 buffer[length] = '\0'; 725 else if (buffer[PAGE_SIZE-1]) { 726 err = -EINVAL; 727 goto out; 728 } 729 730 scsi_dev_info_list_add_str(buffer); 731 732 out: 733 free_page((unsigned long)buffer); 734 return err; 735 } 736 737 static const struct file_operations scsi_devinfo_proc_fops = { 738 .owner = THIS_MODULE, 739 .open = proc_scsi_devinfo_open, 740 .read = seq_read, 741 .write = proc_scsi_devinfo_write, 742 .llseek = seq_lseek, 743 .release = seq_release, 744 }; 745 #endif /* CONFIG_SCSI_PROC_FS */ 746 747 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 748 MODULE_PARM_DESC(dev_flags, 749 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 750 " list entries for vendor and model with an integer value of flags" 751 " to the scsi device info list"); 752 753 module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 754 MODULE_PARM_DESC(default_dev_flags, 755 "scsi default device flag uint64_t value"); 756 757 /** 758 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 759 **/ 760 void scsi_exit_devinfo(void) 761 { 762 #ifdef CONFIG_SCSI_PROC_FS 763 remove_proc_entry("scsi/device_info", NULL); 764 #endif 765 766 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 767 } 768 769 /** 770 * scsi_dev_info_add_list - add a new devinfo list 771 * @key: key of the list to add 772 * @name: Name of the list to add (for /proc/scsi/device_info) 773 * 774 * Adds the requested list, returns zero on success, -EEXIST if the 775 * key is already registered to a list, or other error on failure. 776 */ 777 int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 778 { 779 struct scsi_dev_info_list_table *devinfo_table = 780 scsi_devinfo_lookup_by_key(key); 781 782 if (!IS_ERR(devinfo_table)) 783 /* list already exists */ 784 return -EEXIST; 785 786 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 787 788 if (!devinfo_table) 789 return -ENOMEM; 790 791 INIT_LIST_HEAD(&devinfo_table->node); 792 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 793 devinfo_table->name = name; 794 devinfo_table->key = key; 795 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 796 797 return 0; 798 } 799 EXPORT_SYMBOL(scsi_dev_info_add_list); 800 801 /** 802 * scsi_dev_info_remove_list - destroy an added devinfo list 803 * @key: key of the list to destroy 804 * 805 * Iterates over the entire list first, freeing all the values, then 806 * frees the list itself. Returns 0 on success or -EINVAL if the key 807 * can't be found. 808 */ 809 int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 810 { 811 struct list_head *lh, *lh_next; 812 struct scsi_dev_info_list_table *devinfo_table = 813 scsi_devinfo_lookup_by_key(key); 814 815 if (IS_ERR(devinfo_table)) 816 /* no such list */ 817 return -EINVAL; 818 819 /* remove from the master list */ 820 list_del(&devinfo_table->node); 821 822 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 823 struct scsi_dev_info_list *devinfo; 824 825 devinfo = list_entry(lh, struct scsi_dev_info_list, 826 dev_info_list); 827 kfree(devinfo); 828 } 829 kfree(devinfo_table); 830 831 return 0; 832 } 833 EXPORT_SYMBOL(scsi_dev_info_remove_list); 834 835 /** 836 * scsi_init_devinfo - set up the dynamic device list. 837 * 838 * Description: 839 * Add command line entries from scsi_dev_flags, then add 840 * scsi_static_device_list entries to the scsi device info list. 841 */ 842 int __init scsi_init_devinfo(void) 843 { 844 #ifdef CONFIG_SCSI_PROC_FS 845 struct proc_dir_entry *p; 846 #endif 847 int error, i; 848 849 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 850 if (error) 851 return error; 852 853 error = scsi_dev_info_list_add_str(scsi_dev_flags); 854 if (error) 855 goto out; 856 857 for (i = 0; scsi_static_device_list[i].vendor; i++) { 858 error = scsi_dev_info_list_add(1 /* compatibile */, 859 scsi_static_device_list[i].vendor, 860 scsi_static_device_list[i].model, 861 NULL, 862 scsi_static_device_list[i].flags); 863 if (error) 864 goto out; 865 } 866 867 #ifdef CONFIG_SCSI_PROC_FS 868 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 869 if (!p) { 870 error = -ENOMEM; 871 goto out; 872 } 873 #endif /* CONFIG_SCSI_PROC_FS */ 874 875 out: 876 if (error) 877 scsi_exit_devinfo(); 878 return error; 879 } 880