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 | BLIST_NO_VPD_SIZE}, 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 {"Generic", "Ultra HS-SD/MMC", "2.09", BLIST_IGN_MEDIA_CHANGE | BLIST_INQUIRY_36}, 175 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 177 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 178 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, 179 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 180 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 181 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */ 182 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 183 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 184 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 185 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 186 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 187 {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 188 {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 189 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 190 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"IBM", "2076", NULL, BLIST_NO_VPD_SIZE}, 192 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 193 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 194 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 195 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 196 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 197 {"INSITE", "I325VM", NULL, BLIST_KEY}, 198 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 199 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 200 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 201 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 202 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 203 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 204 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 205 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 206 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 207 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 208 {"MICROP", "4110", NULL, BLIST_NOTQ}, 209 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC}, 210 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 211 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 212 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 213 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 216 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 223 {"Promise", "", NULL, BLIST_SPARSELUN}, 224 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 225 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 226 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 227 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 228 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 229 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 230 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 231 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 232 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 233 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 234 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 235 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 236 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"SKhynix", "H28U74301AMR", NULL, BLIST_SKIP_VPD_PAGES}, 238 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 242 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 243 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 244 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 245 {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 246 {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 247 {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES | 248 BLIST_INQUIRY_36}, 249 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 250 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 251 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 252 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 253 {"SUN", "T300", "*", BLIST_SPARSELUN}, 254 {"SUN", "T4", "*", BLIST_SPARSELUN}, 255 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 256 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 257 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 258 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 259 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 260 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 261 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 262 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 263 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 264 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 265 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 266 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 267 { NULL, NULL, NULL, 0 }, 268 }; 269 270 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 271 { 272 struct scsi_dev_info_list_table *devinfo_table; 273 int found = 0; 274 275 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 276 if (devinfo_table->key == key) { 277 found = 1; 278 break; 279 } 280 if (!found) 281 return ERR_PTR(-EINVAL); 282 283 return devinfo_table; 284 } 285 286 /* 287 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 288 * devinfo vendor and model strings. 289 */ 290 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 291 char *from, int compatible) 292 { 293 size_t from_length; 294 295 from_length = strlen(from); 296 297 /* 298 * null pad and null terminate if compatible 299 * otherwise space pad 300 */ 301 if (compatible) 302 strscpy_pad(to, from, to_length); 303 else 304 memcpy_and_pad(to, to_length, from, from_length, ' '); 305 306 if (from_length > to_length) 307 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 308 __func__, name, from); 309 } 310 311 /** 312 * scsi_dev_info_list_add - add one dev_info list entry. 313 * @compatible: if true, null terminate short strings. Otherwise space pad. 314 * @vendor: vendor string 315 * @model: model (product) string 316 * @strflags: integer string 317 * @flags: if strflags NULL, use this flag value 318 * 319 * Description: 320 * Create and add one dev_info entry for @vendor, @model, @strflags or 321 * @flag. If @compatible, add to the tail of the list, do not space 322 * pad, and set devinfo->compatible. The scsi_static_device_list entries 323 * are added with @compatible 1 and @clfags NULL. 324 * 325 * Returns: 0 OK, -error on failure. 326 **/ 327 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 328 char *strflags, blist_flags_t flags) 329 { 330 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 331 strflags, flags, 332 SCSI_DEVINFO_GLOBAL); 333 } 334 335 /** 336 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 337 * @compatible: if true, null terminate short strings. Otherwise space pad. 338 * @vendor: vendor string 339 * @model: model (product) string 340 * @strflags: integer string 341 * @flags: if strflags NULL, use this flag value 342 * @key: specify list to use 343 * 344 * Description: 345 * Create and add one dev_info entry for @vendor, @model, 346 * @strflags or @flag in list specified by @key. If @compatible, 347 * add to the tail of the list, do not space pad, and set 348 * devinfo->compatible. The scsi_static_device_list entries are 349 * added with @compatible 1 and @clfags NULL. 350 * 351 * Returns: 0 OK, -error on failure. 352 **/ 353 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 354 char *strflags, blist_flags_t flags, 355 enum scsi_devinfo_key key) 356 { 357 struct scsi_dev_info_list *devinfo; 358 struct scsi_dev_info_list_table *devinfo_table = 359 scsi_devinfo_lookup_by_key(key); 360 361 if (IS_ERR(devinfo_table)) 362 return PTR_ERR(devinfo_table); 363 364 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 365 if (!devinfo) { 366 printk(KERN_ERR "%s: no memory\n", __func__); 367 return -ENOMEM; 368 } 369 370 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 371 vendor, compatible); 372 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 373 model, compatible); 374 375 if (strflags) { 376 unsigned long long val; 377 int ret = kstrtoull(strflags, 0, &val); 378 379 if (ret != 0) { 380 kfree(devinfo); 381 return ret; 382 } 383 flags = (__force blist_flags_t)val; 384 } 385 if (flags & __BLIST_UNUSED_MASK) { 386 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 387 vendor, model, flags & __BLIST_UNUSED_MASK); 388 kfree(devinfo); 389 return -EINVAL; 390 } 391 devinfo->flags = flags; 392 devinfo->compatible = compatible; 393 394 if (compatible) 395 list_add_tail(&devinfo->dev_info_list, 396 &devinfo_table->scsi_dev_info_list); 397 else 398 list_add(&devinfo->dev_info_list, 399 &devinfo_table->scsi_dev_info_list); 400 401 return 0; 402 } 403 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 404 405 /** 406 * scsi_dev_info_list_find - find a matching dev_info list entry. 407 * @vendor: full vendor string 408 * @model: full model (product) string 409 * @key: specify list to use 410 * 411 * Description: 412 * Finds the first dev_info entry matching @vendor, @model 413 * in list specified by @key. 414 * 415 * Returns: pointer to matching entry, or ERR_PTR on failure. 416 **/ 417 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 418 const char *model, enum scsi_devinfo_key key) 419 { 420 struct scsi_dev_info_list *devinfo; 421 struct scsi_dev_info_list_table *devinfo_table = 422 scsi_devinfo_lookup_by_key(key); 423 size_t vmax, mmax, mlen; 424 const char *vskip, *mskip; 425 426 if (IS_ERR(devinfo_table)) 427 return (struct scsi_dev_info_list *) devinfo_table; 428 429 /* Prepare for "compatible" matches */ 430 431 /* 432 * XXX why skip leading spaces? If an odd INQUIRY 433 * value, that should have been part of the 434 * scsi_static_device_list[] entry, such as " FOO" 435 * rather than "FOO". Since this code is already 436 * here, and we don't know what device it is 437 * trying to work with, leave it as-is. 438 */ 439 vmax = sizeof(devinfo->vendor); 440 vskip = vendor; 441 while (vmax > 0 && *vskip == ' ') { 442 vmax--; 443 vskip++; 444 } 445 /* Also skip trailing spaces */ 446 while (vmax > 0 && vskip[vmax - 1] == ' ') 447 --vmax; 448 449 mmax = sizeof(devinfo->model); 450 mskip = model; 451 while (mmax > 0 && *mskip == ' ') { 452 mmax--; 453 mskip++; 454 } 455 while (mmax > 0 && mskip[mmax - 1] == ' ') 456 --mmax; 457 458 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 459 dev_info_list) { 460 if (devinfo->compatible) { 461 /* 462 * vendor strings must be an exact match 463 */ 464 if (vmax != strnlen(devinfo->vendor, 465 sizeof(devinfo->vendor)) || 466 memcmp(devinfo->vendor, vskip, vmax)) 467 continue; 468 469 /* 470 * @model specifies the full string, and 471 * must be larger or equal to devinfo->model 472 */ 473 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 474 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 475 continue; 476 return devinfo; 477 } else { 478 if (!memcmp(devinfo->vendor, vendor, 479 sizeof(devinfo->vendor)) && 480 !memcmp(devinfo->model, model, 481 sizeof(devinfo->model))) 482 return devinfo; 483 } 484 } 485 486 return ERR_PTR(-ENOENT); 487 } 488 489 /** 490 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 491 * @vendor: vendor string 492 * @model: model (product) string 493 * @key: specify list to use 494 * 495 * Description: 496 * Remove and destroy one dev_info entry for @vendor, @model 497 * in list specified by @key. 498 * 499 * Returns: 0 OK, -error on failure. 500 **/ 501 int scsi_dev_info_list_del_keyed(char *vendor, char *model, 502 enum scsi_devinfo_key key) 503 { 504 struct scsi_dev_info_list *found; 505 506 found = scsi_dev_info_list_find(vendor, model, key); 507 if (IS_ERR(found)) 508 return PTR_ERR(found); 509 510 list_del(&found->dev_info_list); 511 kfree(found); 512 return 0; 513 } 514 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 515 516 /** 517 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 518 * @dev_list: string of device flags to add 519 * 520 * Description: 521 * Parse dev_list, and add entries to the scsi_dev_info_list. 522 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 523 * dev_list is modified via strsep. Can be called for command line 524 * addition, for proc or mabye a sysfs interface. 525 * 526 * Returns: 0 if OK, -error on failure. 527 **/ 528 static int scsi_dev_info_list_add_str(char *dev_list) 529 { 530 char *vendor, *model, *strflags, *next; 531 char *next_check; 532 int res = 0; 533 534 next = dev_list; 535 if (next && next[0] == '"') { 536 /* 537 * Ignore both the leading and trailing quote. 538 */ 539 next++; 540 next_check = ",\""; 541 } else { 542 next_check = ","; 543 } 544 545 /* 546 * For the leading and trailing '"' case, the for loop comes 547 * through the last time with vendor[0] == '\0'. 548 */ 549 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 550 && (res == 0); vendor = strsep(&next, ":")) { 551 strflags = NULL; 552 model = strsep(&next, ":"); 553 if (model) 554 strflags = strsep(&next, next_check); 555 if (!model || !strflags) { 556 pr_err("%s: bad dev info string '%s' '%s' '%s'\n", 557 __func__, vendor, model ? model : "", 558 strflags ? strflags : ""); 559 res = -EINVAL; 560 } else 561 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 562 model, strflags, 0); 563 } 564 return res; 565 } 566 567 /** 568 * scsi_get_device_flags - get device specific flags from the dynamic 569 * device list. 570 * @sdev: &scsi_device to get flags for 571 * @vendor: vendor name 572 * @model: model name 573 * 574 * Description: 575 * Search the global scsi_dev_info_list (specified by list zero) 576 * for an entry matching @vendor and @model, if found, return the 577 * matching flags value, else return the host or global default 578 * settings. Called during scan time. 579 **/ 580 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 581 const unsigned char *vendor, 582 const unsigned char *model) 583 { 584 return scsi_get_device_flags_keyed(sdev, vendor, model, 585 SCSI_DEVINFO_GLOBAL); 586 } 587 588 589 /** 590 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 591 * @sdev: &scsi_device to get flags for 592 * @vendor: vendor name 593 * @model: model name 594 * @key: list to look up 595 * 596 * Description: 597 * Search the scsi_dev_info_list specified by @key for an entry 598 * matching @vendor and @model, if found, return the matching 599 * flags value, else return the host or global default settings. 600 * Called during scan time. 601 **/ 602 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 603 const unsigned char *vendor, 604 const unsigned char *model, 605 enum scsi_devinfo_key key) 606 { 607 struct scsi_dev_info_list *devinfo; 608 609 devinfo = scsi_dev_info_list_find(vendor, model, key); 610 if (!IS_ERR(devinfo)) 611 return devinfo->flags; 612 613 /* key or device not found: return nothing */ 614 if (key != SCSI_DEVINFO_GLOBAL) 615 return 0; 616 617 /* except for the global list, where we have an exception */ 618 if (sdev->sdev_bflags) 619 return sdev->sdev_bflags; 620 621 return scsi_default_dev_flags; 622 } 623 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 624 625 #ifdef CONFIG_SCSI_PROC_FS 626 struct double_list { 627 struct list_head *top; 628 struct list_head *bottom; 629 }; 630 631 static int devinfo_seq_show(struct seq_file *m, void *v) 632 { 633 struct double_list *dl = v; 634 struct scsi_dev_info_list_table *devinfo_table = 635 list_entry(dl->top, struct scsi_dev_info_list_table, node); 636 struct scsi_dev_info_list *devinfo = 637 list_entry(dl->bottom, struct scsi_dev_info_list, 638 dev_info_list); 639 640 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 641 devinfo_table->name) 642 seq_printf(m, "[%s]:\n", devinfo_table->name); 643 644 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 645 devinfo->vendor, devinfo->model, devinfo->flags); 646 return 0; 647 } 648 649 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 650 { 651 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 652 loff_t pos = *ppos; 653 654 if (!dl) 655 return NULL; 656 657 list_for_each(dl->top, &scsi_dev_info_list) { 658 struct scsi_dev_info_list_table *devinfo_table = 659 list_entry(dl->top, struct scsi_dev_info_list_table, 660 node); 661 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 662 if (pos-- == 0) 663 return dl; 664 } 665 666 kfree(dl); 667 return NULL; 668 } 669 670 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 671 { 672 struct double_list *dl = v; 673 struct scsi_dev_info_list_table *devinfo_table = 674 list_entry(dl->top, struct scsi_dev_info_list_table, node); 675 676 ++*ppos; 677 dl->bottom = dl->bottom->next; 678 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 679 dl->top = dl->top->next; 680 if (dl->top == &scsi_dev_info_list) { 681 kfree(dl); 682 return NULL; 683 } 684 devinfo_table = list_entry(dl->top, 685 struct scsi_dev_info_list_table, 686 node); 687 dl->bottom = devinfo_table->scsi_dev_info_list.next; 688 } 689 690 return dl; 691 } 692 693 static void devinfo_seq_stop(struct seq_file *m, void *v) 694 { 695 kfree(v); 696 } 697 698 static const struct seq_operations scsi_devinfo_seq_ops = { 699 .start = devinfo_seq_start, 700 .next = devinfo_seq_next, 701 .stop = devinfo_seq_stop, 702 .show = devinfo_seq_show, 703 }; 704 705 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 706 { 707 return seq_open(file, &scsi_devinfo_seq_ops); 708 } 709 710 /* 711 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 712 * 713 * Description: Adds a black/white list entry for vendor and model with an 714 * integer value of flag to the scsi device info list. 715 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 716 */ 717 static ssize_t proc_scsi_devinfo_write(struct file *file, 718 const char __user *buf, 719 size_t length, loff_t *ppos) 720 { 721 char *buffer; 722 ssize_t err = length; 723 724 if (!buf || length>PAGE_SIZE) 725 return -EINVAL; 726 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 727 return -ENOMEM; 728 if (copy_from_user(buffer, buf, length)) { 729 err =-EFAULT; 730 goto out; 731 } 732 733 if (length < PAGE_SIZE) 734 buffer[length] = '\0'; 735 else if (buffer[PAGE_SIZE-1]) { 736 err = -EINVAL; 737 goto out; 738 } 739 740 scsi_dev_info_list_add_str(buffer); 741 742 out: 743 free_page((unsigned long)buffer); 744 return err; 745 } 746 747 static const struct proc_ops scsi_devinfo_proc_ops = { 748 .proc_open = proc_scsi_devinfo_open, 749 .proc_read = seq_read, 750 .proc_write = proc_scsi_devinfo_write, 751 .proc_lseek = seq_lseek, 752 .proc_release = seq_release, 753 }; 754 #endif /* CONFIG_SCSI_PROC_FS */ 755 756 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 757 MODULE_PARM_DESC(dev_flags, 758 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 759 " list entries for vendor and model with an integer value of flags" 760 " to the scsi device info list"); 761 762 module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 763 MODULE_PARM_DESC(default_dev_flags, 764 "scsi default device flag uint64_t value"); 765 766 /** 767 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 768 **/ 769 void scsi_exit_devinfo(void) 770 { 771 #ifdef CONFIG_SCSI_PROC_FS 772 remove_proc_entry("scsi/device_info", NULL); 773 #endif 774 775 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 776 } 777 778 /** 779 * scsi_dev_info_add_list - add a new devinfo list 780 * @key: key of the list to add 781 * @name: Name of the list to add (for /proc/scsi/device_info) 782 * 783 * Adds the requested list, returns zero on success, -EEXIST if the 784 * key is already registered to a list, or other error on failure. 785 */ 786 int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 787 { 788 struct scsi_dev_info_list_table *devinfo_table = 789 scsi_devinfo_lookup_by_key(key); 790 791 if (!IS_ERR(devinfo_table)) 792 /* list already exists */ 793 return -EEXIST; 794 795 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 796 797 if (!devinfo_table) 798 return -ENOMEM; 799 800 INIT_LIST_HEAD(&devinfo_table->node); 801 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 802 devinfo_table->name = name; 803 devinfo_table->key = key; 804 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 805 806 return 0; 807 } 808 EXPORT_SYMBOL(scsi_dev_info_add_list); 809 810 /** 811 * scsi_dev_info_remove_list - destroy an added devinfo list 812 * @key: key of the list to destroy 813 * 814 * Iterates over the entire list first, freeing all the values, then 815 * frees the list itself. Returns 0 on success or -EINVAL if the key 816 * can't be found. 817 */ 818 int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 819 { 820 struct list_head *lh, *lh_next; 821 struct scsi_dev_info_list_table *devinfo_table = 822 scsi_devinfo_lookup_by_key(key); 823 824 if (IS_ERR(devinfo_table)) 825 /* no such list */ 826 return -EINVAL; 827 828 /* remove from the master list */ 829 list_del(&devinfo_table->node); 830 831 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 832 struct scsi_dev_info_list *devinfo; 833 834 devinfo = list_entry(lh, struct scsi_dev_info_list, 835 dev_info_list); 836 kfree(devinfo); 837 } 838 kfree(devinfo_table); 839 840 return 0; 841 } 842 EXPORT_SYMBOL(scsi_dev_info_remove_list); 843 844 /** 845 * scsi_init_devinfo - set up the dynamic device list. 846 * 847 * Description: 848 * Add command line entries from scsi_dev_flags, then add 849 * scsi_static_device_list entries to the scsi device info list. 850 */ 851 int __init scsi_init_devinfo(void) 852 { 853 #ifdef CONFIG_SCSI_PROC_FS 854 struct proc_dir_entry *p; 855 #endif 856 int error, i; 857 858 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 859 if (error) 860 return error; 861 862 error = scsi_dev_info_list_add_str(scsi_dev_flags); 863 if (error) 864 goto out; 865 866 for (i = 0; scsi_static_device_list[i].vendor; i++) { 867 error = scsi_dev_info_list_add(1 /* compatibile */, 868 scsi_static_device_list[i].vendor, 869 scsi_static_device_list[i].model, 870 NULL, 871 scsi_static_device_list[i].flags); 872 if (error) 873 goto out; 874 } 875 876 #ifdef CONFIG_SCSI_PROC_FS 877 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops); 878 if (!p) { 879 error = -ENOMEM; 880 goto out; 881 } 882 #endif /* CONFIG_SCSI_PROC_FS */ 883 884 out: 885 if (error) 886 scsi_exit_devinfo(); 887 return error; 888 } 889