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 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 242 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 243 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 244 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 245 {"SUN", "T300", "*", BLIST_SPARSELUN}, 246 {"SUN", "T4", "*", BLIST_SPARSELUN}, 247 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 248 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 249 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 250 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 251 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 252 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 253 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 254 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 255 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 256 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 257 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 258 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 259 { NULL, NULL, NULL, 0 }, 260 }; 261 262 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 263 { 264 struct scsi_dev_info_list_table *devinfo_table; 265 int found = 0; 266 267 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 268 if (devinfo_table->key == key) { 269 found = 1; 270 break; 271 } 272 if (!found) 273 return ERR_PTR(-EINVAL); 274 275 return devinfo_table; 276 } 277 278 /* 279 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 280 * devinfo vendor and model strings. 281 */ 282 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 283 char *from, int compatible) 284 { 285 size_t from_length; 286 287 from_length = strlen(from); 288 /* This zero-pads the destination */ 289 strncpy(to, from, to_length); 290 if (from_length < to_length && !compatible) { 291 /* 292 * space pad the string if it is short. 293 */ 294 memset(&to[from_length], ' ', to_length - from_length); 295 } 296 if (from_length > to_length) 297 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 298 __func__, name, from); 299 } 300 301 /** 302 * scsi_dev_info_list_add - add one dev_info list entry. 303 * @compatible: if true, null terminate short strings. Otherwise space pad. 304 * @vendor: vendor string 305 * @model: model (product) string 306 * @strflags: integer string 307 * @flags: if strflags NULL, use this flag value 308 * 309 * Description: 310 * Create and add one dev_info entry for @vendor, @model, @strflags or 311 * @flag. If @compatible, add to the tail of the list, do not space 312 * pad, and set devinfo->compatible. The scsi_static_device_list entries 313 * are added with @compatible 1 and @clfags NULL. 314 * 315 * Returns: 0 OK, -error on failure. 316 **/ 317 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 318 char *strflags, blist_flags_t flags) 319 { 320 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 321 strflags, flags, 322 SCSI_DEVINFO_GLOBAL); 323 } 324 325 /** 326 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 327 * @compatible: if true, null terminate short strings. Otherwise space pad. 328 * @vendor: vendor string 329 * @model: model (product) string 330 * @strflags: integer string 331 * @flags: if strflags NULL, use this flag value 332 * @key: specify list to use 333 * 334 * Description: 335 * Create and add one dev_info entry for @vendor, @model, 336 * @strflags or @flag in list specified by @key. If @compatible, 337 * add to the tail of the list, do not space pad, and set 338 * devinfo->compatible. The scsi_static_device_list entries are 339 * added with @compatible 1 and @clfags NULL. 340 * 341 * Returns: 0 OK, -error on failure. 342 **/ 343 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 344 char *strflags, blist_flags_t flags, 345 enum scsi_devinfo_key key) 346 { 347 struct scsi_dev_info_list *devinfo; 348 struct scsi_dev_info_list_table *devinfo_table = 349 scsi_devinfo_lookup_by_key(key); 350 351 if (IS_ERR(devinfo_table)) 352 return PTR_ERR(devinfo_table); 353 354 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 355 if (!devinfo) { 356 printk(KERN_ERR "%s: no memory\n", __func__); 357 return -ENOMEM; 358 } 359 360 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 361 vendor, compatible); 362 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 363 model, compatible); 364 365 if (strflags) { 366 unsigned long long val; 367 int ret = kstrtoull(strflags, 0, &val); 368 369 if (ret != 0) { 370 kfree(devinfo); 371 return ret; 372 } 373 flags = (__force blist_flags_t)val; 374 } 375 if (flags & __BLIST_UNUSED_MASK) { 376 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 377 vendor, model, flags & __BLIST_UNUSED_MASK); 378 kfree(devinfo); 379 return -EINVAL; 380 } 381 devinfo->flags = flags; 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: full vendor string 398 * @model: full 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, enum scsi_devinfo_key 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, mlen; 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 = sizeof(devinfo->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 = sizeof(devinfo->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 * vendor strings must be an exact match 453 */ 454 if (vmax != strnlen(devinfo->vendor, 455 sizeof(devinfo->vendor)) || 456 memcmp(devinfo->vendor, vskip, vmax)) 457 continue; 458 459 /* 460 * @model specifies the full string, and 461 * must be larger or equal to devinfo->model 462 */ 463 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 464 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 465 continue; 466 return devinfo; 467 } else { 468 if (!memcmp(devinfo->vendor, vendor, 469 sizeof(devinfo->vendor)) && 470 !memcmp(devinfo->model, model, 471 sizeof(devinfo->model))) 472 return devinfo; 473 } 474 } 475 476 return ERR_PTR(-ENOENT); 477 } 478 479 /** 480 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 481 * @vendor: vendor string 482 * @model: model (product) string 483 * @key: specify list to use 484 * 485 * Description: 486 * Remove and destroy one dev_info entry for @vendor, @model 487 * in list specified by @key. 488 * 489 * Returns: 0 OK, -error on failure. 490 **/ 491 int scsi_dev_info_list_del_keyed(char *vendor, char *model, 492 enum scsi_devinfo_key key) 493 { 494 struct scsi_dev_info_list *found; 495 496 found = scsi_dev_info_list_find(vendor, model, key); 497 if (IS_ERR(found)) 498 return PTR_ERR(found); 499 500 list_del(&found->dev_info_list); 501 kfree(found); 502 return 0; 503 } 504 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 505 506 /** 507 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 508 * @dev_list: string of device flags to add 509 * 510 * Description: 511 * Parse dev_list, and add entries to the scsi_dev_info_list. 512 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 513 * dev_list is modified via strsep. Can be called for command line 514 * addition, for proc or mabye a sysfs interface. 515 * 516 * Returns: 0 if OK, -error on failure. 517 **/ 518 static int scsi_dev_info_list_add_str(char *dev_list) 519 { 520 char *vendor, *model, *strflags, *next; 521 char *next_check; 522 int res = 0; 523 524 next = dev_list; 525 if (next && next[0] == '"') { 526 /* 527 * Ignore both the leading and trailing quote. 528 */ 529 next++; 530 next_check = ",\""; 531 } else { 532 next_check = ","; 533 } 534 535 /* 536 * For the leading and trailing '"' case, the for loop comes 537 * through the last time with vendor[0] == '\0'. 538 */ 539 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 540 && (res == 0); vendor = strsep(&next, ":")) { 541 strflags = NULL; 542 model = strsep(&next, ":"); 543 if (model) 544 strflags = strsep(&next, next_check); 545 if (!model || !strflags) { 546 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 547 " '%s'\n", __func__, vendor, model, 548 strflags); 549 res = -EINVAL; 550 } else 551 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 552 model, strflags, 0); 553 } 554 return res; 555 } 556 557 /** 558 * get_device_flags - get device specific flags from the dynamic device list. 559 * @sdev: &scsi_device to get flags for 560 * @vendor: vendor name 561 * @model: model name 562 * 563 * Description: 564 * Search the global scsi_dev_info_list (specified by list zero) 565 * for an entry matching @vendor and @model, if found, return the 566 * matching flags value, else return the host or global default 567 * settings. Called during scan time. 568 **/ 569 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 570 const unsigned char *vendor, 571 const unsigned char *model) 572 { 573 return scsi_get_device_flags_keyed(sdev, vendor, model, 574 SCSI_DEVINFO_GLOBAL); 575 } 576 577 578 /** 579 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 580 * @sdev: &scsi_device to get flags for 581 * @vendor: vendor name 582 * @model: model name 583 * @key: list to look up 584 * 585 * Description: 586 * Search the scsi_dev_info_list specified by @key for an entry 587 * matching @vendor and @model, if found, return the matching 588 * flags value, else return the host or global default settings. 589 * Called during scan time. 590 **/ 591 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 592 const unsigned char *vendor, 593 const unsigned char *model, 594 enum scsi_devinfo_key key) 595 { 596 struct scsi_dev_info_list *devinfo; 597 598 devinfo = scsi_dev_info_list_find(vendor, model, key); 599 if (!IS_ERR(devinfo)) 600 return devinfo->flags; 601 602 /* key or device not found: return nothing */ 603 if (key != SCSI_DEVINFO_GLOBAL) 604 return 0; 605 606 /* except for the global list, where we have an exception */ 607 if (sdev->sdev_bflags) 608 return sdev->sdev_bflags; 609 610 return scsi_default_dev_flags; 611 } 612 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 613 614 #ifdef CONFIG_SCSI_PROC_FS 615 struct double_list { 616 struct list_head *top; 617 struct list_head *bottom; 618 }; 619 620 static int devinfo_seq_show(struct seq_file *m, void *v) 621 { 622 struct double_list *dl = v; 623 struct scsi_dev_info_list_table *devinfo_table = 624 list_entry(dl->top, struct scsi_dev_info_list_table, node); 625 struct scsi_dev_info_list *devinfo = 626 list_entry(dl->bottom, struct scsi_dev_info_list, 627 dev_info_list); 628 629 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 630 devinfo_table->name) 631 seq_printf(m, "[%s]:\n", devinfo_table->name); 632 633 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 634 devinfo->vendor, devinfo->model, devinfo->flags); 635 return 0; 636 } 637 638 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 639 { 640 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 641 loff_t pos = *ppos; 642 643 if (!dl) 644 return NULL; 645 646 list_for_each(dl->top, &scsi_dev_info_list) { 647 struct scsi_dev_info_list_table *devinfo_table = 648 list_entry(dl->top, struct scsi_dev_info_list_table, 649 node); 650 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 651 if (pos-- == 0) 652 return dl; 653 } 654 655 kfree(dl); 656 return NULL; 657 } 658 659 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 660 { 661 struct double_list *dl = v; 662 struct scsi_dev_info_list_table *devinfo_table = 663 list_entry(dl->top, struct scsi_dev_info_list_table, node); 664 665 ++*ppos; 666 dl->bottom = dl->bottom->next; 667 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 668 dl->top = dl->top->next; 669 if (dl->top == &scsi_dev_info_list) { 670 kfree(dl); 671 return NULL; 672 } 673 devinfo_table = list_entry(dl->top, 674 struct scsi_dev_info_list_table, 675 node); 676 dl->bottom = devinfo_table->scsi_dev_info_list.next; 677 } 678 679 return dl; 680 } 681 682 static void devinfo_seq_stop(struct seq_file *m, void *v) 683 { 684 kfree(v); 685 } 686 687 static const struct seq_operations scsi_devinfo_seq_ops = { 688 .start = devinfo_seq_start, 689 .next = devinfo_seq_next, 690 .stop = devinfo_seq_stop, 691 .show = devinfo_seq_show, 692 }; 693 694 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 695 { 696 return seq_open(file, &scsi_devinfo_seq_ops); 697 } 698 699 /* 700 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 701 * 702 * Description: Adds a black/white list entry for vendor and model with an 703 * integer value of flag to the scsi device info list. 704 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 705 */ 706 static ssize_t proc_scsi_devinfo_write(struct file *file, 707 const char __user *buf, 708 size_t length, loff_t *ppos) 709 { 710 char *buffer; 711 ssize_t err = length; 712 713 if (!buf || length>PAGE_SIZE) 714 return -EINVAL; 715 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 716 return -ENOMEM; 717 if (copy_from_user(buffer, buf, length)) { 718 err =-EFAULT; 719 goto out; 720 } 721 722 if (length < PAGE_SIZE) 723 buffer[length] = '\0'; 724 else if (buffer[PAGE_SIZE-1]) { 725 err = -EINVAL; 726 goto out; 727 } 728 729 scsi_dev_info_list_add_str(buffer); 730 731 out: 732 free_page((unsigned long)buffer); 733 return err; 734 } 735 736 static const struct file_operations scsi_devinfo_proc_fops = { 737 .owner = THIS_MODULE, 738 .open = proc_scsi_devinfo_open, 739 .read = seq_read, 740 .write = proc_scsi_devinfo_write, 741 .llseek = seq_lseek, 742 .release = seq_release, 743 }; 744 #endif /* CONFIG_SCSI_PROC_FS */ 745 746 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 747 MODULE_PARM_DESC(dev_flags, 748 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 749 " list entries for vendor and model with an integer value of flags" 750 " to the scsi device info list"); 751 752 module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 753 MODULE_PARM_DESC(default_dev_flags, 754 "scsi default device flag uint64_t value"); 755 756 /** 757 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 758 **/ 759 void scsi_exit_devinfo(void) 760 { 761 #ifdef CONFIG_SCSI_PROC_FS 762 remove_proc_entry("scsi/device_info", NULL); 763 #endif 764 765 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 766 } 767 768 /** 769 * scsi_dev_info_add_list - add a new devinfo list 770 * @key: key of the list to add 771 * @name: Name of the list to add (for /proc/scsi/device_info) 772 * 773 * Adds the requested list, returns zero on success, -EEXIST if the 774 * key is already registered to a list, or other error on failure. 775 */ 776 int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 777 { 778 struct scsi_dev_info_list_table *devinfo_table = 779 scsi_devinfo_lookup_by_key(key); 780 781 if (!IS_ERR(devinfo_table)) 782 /* list already exists */ 783 return -EEXIST; 784 785 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 786 787 if (!devinfo_table) 788 return -ENOMEM; 789 790 INIT_LIST_HEAD(&devinfo_table->node); 791 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 792 devinfo_table->name = name; 793 devinfo_table->key = key; 794 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 795 796 return 0; 797 } 798 EXPORT_SYMBOL(scsi_dev_info_add_list); 799 800 /** 801 * scsi_dev_info_remove_list - destroy an added devinfo list 802 * @key: key of the list to destroy 803 * 804 * Iterates over the entire list first, freeing all the values, then 805 * frees the list itself. Returns 0 on success or -EINVAL if the key 806 * can't be found. 807 */ 808 int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 809 { 810 struct list_head *lh, *lh_next; 811 struct scsi_dev_info_list_table *devinfo_table = 812 scsi_devinfo_lookup_by_key(key); 813 814 if (IS_ERR(devinfo_table)) 815 /* no such list */ 816 return -EINVAL; 817 818 /* remove from the master list */ 819 list_del(&devinfo_table->node); 820 821 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 822 struct scsi_dev_info_list *devinfo; 823 824 devinfo = list_entry(lh, struct scsi_dev_info_list, 825 dev_info_list); 826 kfree(devinfo); 827 } 828 kfree(devinfo_table); 829 830 return 0; 831 } 832 EXPORT_SYMBOL(scsi_dev_info_remove_list); 833 834 /** 835 * scsi_init_devinfo - set up the dynamic device list. 836 * 837 * Description: 838 * Add command line entries from scsi_dev_flags, then add 839 * scsi_static_device_list entries to the scsi device info list. 840 */ 841 int __init scsi_init_devinfo(void) 842 { 843 #ifdef CONFIG_SCSI_PROC_FS 844 struct proc_dir_entry *p; 845 #endif 846 int error, i; 847 848 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 849 if (error) 850 return error; 851 852 error = scsi_dev_info_list_add_str(scsi_dev_flags); 853 if (error) 854 goto out; 855 856 for (i = 0; scsi_static_device_list[i].vendor; i++) { 857 error = scsi_dev_info_list_add(1 /* compatibile */, 858 scsi_static_device_list[i].vendor, 859 scsi_static_device_list[i].model, 860 NULL, 861 scsi_static_device_list[i].flags); 862 if (error) 863 goto out; 864 } 865 866 #ifdef CONFIG_SCSI_PROC_FS 867 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 868 if (!p) { 869 error = -ENOMEM; 870 goto out; 871 } 872 #endif /* CONFIG_SCSI_PROC_FS */ 873 874 out: 875 if (error) 876 scsi_exit_devinfo(); 877 return error; 878 } 879