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