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 {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 188 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 189 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 190 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 191 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 192 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 193 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 194 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 195 {"INSITE", "I325VM", NULL, BLIST_KEY}, 196 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 197 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 198 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 199 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 200 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 201 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 202 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 203 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 204 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 205 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 206 {"MICROP", "4110", NULL, BLIST_NOTQ}, 207 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC}, 208 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 209 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 210 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 211 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 212 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 213 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 214 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 216 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 221 {"Promise", "", NULL, BLIST_SPARSELUN}, 222 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 223 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 224 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 225 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 226 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 227 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 228 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 229 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 230 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 231 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 232 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 233 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 234 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 235 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 236 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 242 {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 243 {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 244 {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES | 245 BLIST_INQUIRY_36}, 246 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 247 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 248 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 249 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 250 {"SUN", "T300", "*", BLIST_SPARSELUN}, 251 {"SUN", "T4", "*", BLIST_SPARSELUN}, 252 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 253 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 254 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 255 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 256 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 257 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 258 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 259 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 260 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 261 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 262 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 263 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 264 { NULL, NULL, NULL, 0 }, 265 }; 266 267 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 268 { 269 struct scsi_dev_info_list_table *devinfo_table; 270 int found = 0; 271 272 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 273 if (devinfo_table->key == key) { 274 found = 1; 275 break; 276 } 277 if (!found) 278 return ERR_PTR(-EINVAL); 279 280 return devinfo_table; 281 } 282 283 /* 284 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 285 * devinfo vendor and model strings. 286 */ 287 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 288 char *from, int compatible) 289 { 290 size_t from_length; 291 292 from_length = strlen(from); 293 /* This zero-pads the destination */ 294 strncpy(to, from, to_length); 295 if (from_length < to_length && !compatible) { 296 /* 297 * space pad the string if it is short. 298 */ 299 memset(&to[from_length], ' ', to_length - from_length); 300 } 301 if (from_length > to_length) 302 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 303 __func__, name, from); 304 } 305 306 /** 307 * scsi_dev_info_list_add - add one dev_info list entry. 308 * @compatible: if true, null terminate short strings. Otherwise space pad. 309 * @vendor: vendor string 310 * @model: model (product) string 311 * @strflags: integer string 312 * @flags: if strflags NULL, use this flag value 313 * 314 * Description: 315 * Create and add one dev_info entry for @vendor, @model, @strflags or 316 * @flag. If @compatible, add to the tail of the list, do not space 317 * pad, and set devinfo->compatible. The scsi_static_device_list entries 318 * are added with @compatible 1 and @clfags NULL. 319 * 320 * Returns: 0 OK, -error on failure. 321 **/ 322 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 323 char *strflags, blist_flags_t flags) 324 { 325 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 326 strflags, flags, 327 SCSI_DEVINFO_GLOBAL); 328 } 329 330 /** 331 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 332 * @compatible: if true, null terminate short strings. Otherwise space pad. 333 * @vendor: vendor string 334 * @model: model (product) string 335 * @strflags: integer string 336 * @flags: if strflags NULL, use this flag value 337 * @key: specify list to use 338 * 339 * Description: 340 * Create and add one dev_info entry for @vendor, @model, 341 * @strflags or @flag in list specified by @key. If @compatible, 342 * add to the tail of the list, do not space pad, and set 343 * devinfo->compatible. The scsi_static_device_list entries are 344 * added with @compatible 1 and @clfags NULL. 345 * 346 * Returns: 0 OK, -error on failure. 347 **/ 348 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 349 char *strflags, blist_flags_t flags, 350 enum scsi_devinfo_key key) 351 { 352 struct scsi_dev_info_list *devinfo; 353 struct scsi_dev_info_list_table *devinfo_table = 354 scsi_devinfo_lookup_by_key(key); 355 356 if (IS_ERR(devinfo_table)) 357 return PTR_ERR(devinfo_table); 358 359 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 360 if (!devinfo) { 361 printk(KERN_ERR "%s: no memory\n", __func__); 362 return -ENOMEM; 363 } 364 365 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 366 vendor, compatible); 367 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 368 model, compatible); 369 370 if (strflags) { 371 unsigned long long val; 372 int ret = kstrtoull(strflags, 0, &val); 373 374 if (ret != 0) { 375 kfree(devinfo); 376 return ret; 377 } 378 flags = (__force blist_flags_t)val; 379 } 380 if (flags & __BLIST_UNUSED_MASK) { 381 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 382 vendor, model, flags & __BLIST_UNUSED_MASK); 383 kfree(devinfo); 384 return -EINVAL; 385 } 386 devinfo->flags = flags; 387 devinfo->compatible = compatible; 388 389 if (compatible) 390 list_add_tail(&devinfo->dev_info_list, 391 &devinfo_table->scsi_dev_info_list); 392 else 393 list_add(&devinfo->dev_info_list, 394 &devinfo_table->scsi_dev_info_list); 395 396 return 0; 397 } 398 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 399 400 /** 401 * scsi_dev_info_list_find - find a matching dev_info list entry. 402 * @vendor: full vendor string 403 * @model: full model (product) string 404 * @key: specify list to use 405 * 406 * Description: 407 * Finds the first dev_info entry matching @vendor, @model 408 * in list specified by @key. 409 * 410 * Returns: pointer to matching entry, or ERR_PTR on failure. 411 **/ 412 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 413 const char *model, enum scsi_devinfo_key key) 414 { 415 struct scsi_dev_info_list *devinfo; 416 struct scsi_dev_info_list_table *devinfo_table = 417 scsi_devinfo_lookup_by_key(key); 418 size_t vmax, mmax, mlen; 419 const char *vskip, *mskip; 420 421 if (IS_ERR(devinfo_table)) 422 return (struct scsi_dev_info_list *) devinfo_table; 423 424 /* Prepare for "compatible" matches */ 425 426 /* 427 * XXX why skip leading spaces? If an odd INQUIRY 428 * value, that should have been part of the 429 * scsi_static_device_list[] entry, such as " FOO" 430 * rather than "FOO". Since this code is already 431 * here, and we don't know what device it is 432 * trying to work with, leave it as-is. 433 */ 434 vmax = sizeof(devinfo->vendor); 435 vskip = vendor; 436 while (vmax > 0 && *vskip == ' ') { 437 vmax--; 438 vskip++; 439 } 440 /* Also skip trailing spaces */ 441 while (vmax > 0 && vskip[vmax - 1] == ' ') 442 --vmax; 443 444 mmax = sizeof(devinfo->model); 445 mskip = model; 446 while (mmax > 0 && *mskip == ' ') { 447 mmax--; 448 mskip++; 449 } 450 while (mmax > 0 && mskip[mmax - 1] == ' ') 451 --mmax; 452 453 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 454 dev_info_list) { 455 if (devinfo->compatible) { 456 /* 457 * vendor strings must be an exact match 458 */ 459 if (vmax != strnlen(devinfo->vendor, 460 sizeof(devinfo->vendor)) || 461 memcmp(devinfo->vendor, vskip, vmax)) 462 continue; 463 464 /* 465 * @model specifies the full string, and 466 * must be larger or equal to devinfo->model 467 */ 468 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 469 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 470 continue; 471 return devinfo; 472 } else { 473 if (!memcmp(devinfo->vendor, vendor, 474 sizeof(devinfo->vendor)) && 475 !memcmp(devinfo->model, model, 476 sizeof(devinfo->model))) 477 return devinfo; 478 } 479 } 480 481 return ERR_PTR(-ENOENT); 482 } 483 484 /** 485 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 486 * @vendor: vendor string 487 * @model: model (product) string 488 * @key: specify list to use 489 * 490 * Description: 491 * Remove and destroy one dev_info entry for @vendor, @model 492 * in list specified by @key. 493 * 494 * Returns: 0 OK, -error on failure. 495 **/ 496 int scsi_dev_info_list_del_keyed(char *vendor, char *model, 497 enum scsi_devinfo_key key) 498 { 499 struct scsi_dev_info_list *found; 500 501 found = scsi_dev_info_list_find(vendor, model, key); 502 if (IS_ERR(found)) 503 return PTR_ERR(found); 504 505 list_del(&found->dev_info_list); 506 kfree(found); 507 return 0; 508 } 509 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 510 511 /** 512 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 513 * @dev_list: string of device flags to add 514 * 515 * Description: 516 * Parse dev_list, and add entries to the scsi_dev_info_list. 517 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 518 * dev_list is modified via strsep. Can be called for command line 519 * addition, for proc or mabye a sysfs interface. 520 * 521 * Returns: 0 if OK, -error on failure. 522 **/ 523 static int scsi_dev_info_list_add_str(char *dev_list) 524 { 525 char *vendor, *model, *strflags, *next; 526 char *next_check; 527 int res = 0; 528 529 next = dev_list; 530 if (next && next[0] == '"') { 531 /* 532 * Ignore both the leading and trailing quote. 533 */ 534 next++; 535 next_check = ",\""; 536 } else { 537 next_check = ","; 538 } 539 540 /* 541 * For the leading and trailing '"' case, the for loop comes 542 * through the last time with vendor[0] == '\0'. 543 */ 544 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 545 && (res == 0); vendor = strsep(&next, ":")) { 546 strflags = NULL; 547 model = strsep(&next, ":"); 548 if (model) 549 strflags = strsep(&next, next_check); 550 if (!model || !strflags) { 551 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 552 " '%s'\n", __func__, vendor, model, 553 strflags); 554 res = -EINVAL; 555 } else 556 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 557 model, strflags, 0); 558 } 559 return res; 560 } 561 562 /** 563 * scsi_get_device_flags - get device specific flags from the dynamic 564 * device list. 565 * @sdev: &scsi_device to get flags for 566 * @vendor: vendor name 567 * @model: model name 568 * 569 * Description: 570 * Search the global scsi_dev_info_list (specified by list zero) 571 * for an entry matching @vendor and @model, if found, return the 572 * matching flags value, else return the host or global default 573 * settings. Called during scan time. 574 **/ 575 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 576 const unsigned char *vendor, 577 const unsigned char *model) 578 { 579 return scsi_get_device_flags_keyed(sdev, vendor, model, 580 SCSI_DEVINFO_GLOBAL); 581 } 582 583 584 /** 585 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 586 * @sdev: &scsi_device to get flags for 587 * @vendor: vendor name 588 * @model: model name 589 * @key: list to look up 590 * 591 * Description: 592 * Search the scsi_dev_info_list specified by @key for an entry 593 * matching @vendor and @model, if found, return the matching 594 * flags value, else return the host or global default settings. 595 * Called during scan time. 596 **/ 597 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 598 const unsigned char *vendor, 599 const unsigned char *model, 600 enum scsi_devinfo_key key) 601 { 602 struct scsi_dev_info_list *devinfo; 603 604 devinfo = scsi_dev_info_list_find(vendor, model, key); 605 if (!IS_ERR(devinfo)) 606 return devinfo->flags; 607 608 /* key or device not found: return nothing */ 609 if (key != SCSI_DEVINFO_GLOBAL) 610 return 0; 611 612 /* except for the global list, where we have an exception */ 613 if (sdev->sdev_bflags) 614 return sdev->sdev_bflags; 615 616 return scsi_default_dev_flags; 617 } 618 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 619 620 #ifdef CONFIG_SCSI_PROC_FS 621 struct double_list { 622 struct list_head *top; 623 struct list_head *bottom; 624 }; 625 626 static int devinfo_seq_show(struct seq_file *m, void *v) 627 { 628 struct double_list *dl = v; 629 struct scsi_dev_info_list_table *devinfo_table = 630 list_entry(dl->top, struct scsi_dev_info_list_table, node); 631 struct scsi_dev_info_list *devinfo = 632 list_entry(dl->bottom, struct scsi_dev_info_list, 633 dev_info_list); 634 635 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 636 devinfo_table->name) 637 seq_printf(m, "[%s]:\n", devinfo_table->name); 638 639 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 640 devinfo->vendor, devinfo->model, devinfo->flags); 641 return 0; 642 } 643 644 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 645 { 646 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 647 loff_t pos = *ppos; 648 649 if (!dl) 650 return NULL; 651 652 list_for_each(dl->top, &scsi_dev_info_list) { 653 struct scsi_dev_info_list_table *devinfo_table = 654 list_entry(dl->top, struct scsi_dev_info_list_table, 655 node); 656 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 657 if (pos-- == 0) 658 return dl; 659 } 660 661 kfree(dl); 662 return NULL; 663 } 664 665 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 666 { 667 struct double_list *dl = v; 668 struct scsi_dev_info_list_table *devinfo_table = 669 list_entry(dl->top, struct scsi_dev_info_list_table, node); 670 671 ++*ppos; 672 dl->bottom = dl->bottom->next; 673 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 674 dl->top = dl->top->next; 675 if (dl->top == &scsi_dev_info_list) { 676 kfree(dl); 677 return NULL; 678 } 679 devinfo_table = list_entry(dl->top, 680 struct scsi_dev_info_list_table, 681 node); 682 dl->bottom = devinfo_table->scsi_dev_info_list.next; 683 } 684 685 return dl; 686 } 687 688 static void devinfo_seq_stop(struct seq_file *m, void *v) 689 { 690 kfree(v); 691 } 692 693 static const struct seq_operations scsi_devinfo_seq_ops = { 694 .start = devinfo_seq_start, 695 .next = devinfo_seq_next, 696 .stop = devinfo_seq_stop, 697 .show = devinfo_seq_show, 698 }; 699 700 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 701 { 702 return seq_open(file, &scsi_devinfo_seq_ops); 703 } 704 705 /* 706 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 707 * 708 * Description: Adds a black/white list entry for vendor and model with an 709 * integer value of flag to the scsi device info list. 710 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 711 */ 712 static ssize_t proc_scsi_devinfo_write(struct file *file, 713 const char __user *buf, 714 size_t length, loff_t *ppos) 715 { 716 char *buffer; 717 ssize_t err = length; 718 719 if (!buf || length>PAGE_SIZE) 720 return -EINVAL; 721 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 722 return -ENOMEM; 723 if (copy_from_user(buffer, buf, length)) { 724 err =-EFAULT; 725 goto out; 726 } 727 728 if (length < PAGE_SIZE) 729 buffer[length] = '\0'; 730 else if (buffer[PAGE_SIZE-1]) { 731 err = -EINVAL; 732 goto out; 733 } 734 735 scsi_dev_info_list_add_str(buffer); 736 737 out: 738 free_page((unsigned long)buffer); 739 return err; 740 } 741 742 static const struct proc_ops scsi_devinfo_proc_ops = { 743 .proc_open = proc_scsi_devinfo_open, 744 .proc_read = seq_read, 745 .proc_write = proc_scsi_devinfo_write, 746 .proc_lseek = seq_lseek, 747 .proc_release = seq_release, 748 }; 749 #endif /* CONFIG_SCSI_PROC_FS */ 750 751 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 752 MODULE_PARM_DESC(dev_flags, 753 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 754 " list entries for vendor and model with an integer value of flags" 755 " to the scsi device info list"); 756 757 module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 758 MODULE_PARM_DESC(default_dev_flags, 759 "scsi default device flag uint64_t value"); 760 761 /** 762 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 763 **/ 764 void scsi_exit_devinfo(void) 765 { 766 #ifdef CONFIG_SCSI_PROC_FS 767 remove_proc_entry("scsi/device_info", NULL); 768 #endif 769 770 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 771 } 772 773 /** 774 * scsi_dev_info_add_list - add a new devinfo list 775 * @key: key of the list to add 776 * @name: Name of the list to add (for /proc/scsi/device_info) 777 * 778 * Adds the requested list, returns zero on success, -EEXIST if the 779 * key is already registered to a list, or other error on failure. 780 */ 781 int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 782 { 783 struct scsi_dev_info_list_table *devinfo_table = 784 scsi_devinfo_lookup_by_key(key); 785 786 if (!IS_ERR(devinfo_table)) 787 /* list already exists */ 788 return -EEXIST; 789 790 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 791 792 if (!devinfo_table) 793 return -ENOMEM; 794 795 INIT_LIST_HEAD(&devinfo_table->node); 796 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 797 devinfo_table->name = name; 798 devinfo_table->key = key; 799 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 800 801 return 0; 802 } 803 EXPORT_SYMBOL(scsi_dev_info_add_list); 804 805 /** 806 * scsi_dev_info_remove_list - destroy an added devinfo list 807 * @key: key of the list to destroy 808 * 809 * Iterates over the entire list first, freeing all the values, then 810 * frees the list itself. Returns 0 on success or -EINVAL if the key 811 * can't be found. 812 */ 813 int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 814 { 815 struct list_head *lh, *lh_next; 816 struct scsi_dev_info_list_table *devinfo_table = 817 scsi_devinfo_lookup_by_key(key); 818 819 if (IS_ERR(devinfo_table)) 820 /* no such list */ 821 return -EINVAL; 822 823 /* remove from the master list */ 824 list_del(&devinfo_table->node); 825 826 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 827 struct scsi_dev_info_list *devinfo; 828 829 devinfo = list_entry(lh, struct scsi_dev_info_list, 830 dev_info_list); 831 kfree(devinfo); 832 } 833 kfree(devinfo_table); 834 835 return 0; 836 } 837 EXPORT_SYMBOL(scsi_dev_info_remove_list); 838 839 /** 840 * scsi_init_devinfo - set up the dynamic device list. 841 * 842 * Description: 843 * Add command line entries from scsi_dev_flags, then add 844 * scsi_static_device_list entries to the scsi device info list. 845 */ 846 int __init scsi_init_devinfo(void) 847 { 848 #ifdef CONFIG_SCSI_PROC_FS 849 struct proc_dir_entry *p; 850 #endif 851 int error, i; 852 853 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 854 if (error) 855 return error; 856 857 error = scsi_dev_info_list_add_str(scsi_dev_flags); 858 if (error) 859 goto out; 860 861 for (i = 0; scsi_static_device_list[i].vendor; i++) { 862 error = scsi_dev_info_list_add(1 /* compatibile */, 863 scsi_static_device_list[i].vendor, 864 scsi_static_device_list[i].model, 865 NULL, 866 scsi_static_device_list[i].flags); 867 if (error) 868 goto out; 869 } 870 871 #ifdef CONFIG_SCSI_PROC_FS 872 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops); 873 if (!p) { 874 error = -ENOMEM; 875 goto out; 876 } 877 #endif /* CONFIG_SCSI_PROC_FS */ 878 879 out: 880 if (error) 881 scsi_exit_devinfo(); 882 return error; 883 } 884