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 | BLIST_REPORTLUN2}, 165 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 166 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 167 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 168 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 169 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 170 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 171 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 172 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 173 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 174 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 175 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, 177 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 178 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 179 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */ 180 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 181 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 182 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 183 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 184 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 185 {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 186 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 187 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 188 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 189 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 190 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 191 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 192 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 193 {"INSITE", "I325VM", NULL, BLIST_KEY}, 194 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 195 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 196 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 197 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 198 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 199 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 200 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 201 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 202 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 203 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 204 {"MICROP", "4110", NULL, BLIST_NOTQ}, 205 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC}, 206 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 207 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 208 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 209 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 210 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 211 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 212 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 213 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 216 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 219 {"Promise", "", NULL, BLIST_SPARSELUN}, 220 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 221 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 222 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 223 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 224 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 225 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 226 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 227 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 228 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 229 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 230 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 231 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 232 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 233 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 234 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 235 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 236 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 241 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 242 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 243 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 244 {"SUN", "T300", "*", BLIST_SPARSELUN}, 245 {"SUN", "T4", "*", BLIST_SPARSELUN}, 246 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 247 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 248 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 249 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 250 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 251 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 252 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 253 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 254 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 255 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 256 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 257 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 258 { NULL, NULL, NULL, 0 }, 259 }; 260 261 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 262 { 263 struct scsi_dev_info_list_table *devinfo_table; 264 int found = 0; 265 266 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 267 if (devinfo_table->key == key) { 268 found = 1; 269 break; 270 } 271 if (!found) 272 return ERR_PTR(-EINVAL); 273 274 return devinfo_table; 275 } 276 277 /* 278 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 279 * devinfo vendor and model strings. 280 */ 281 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 282 char *from, int compatible) 283 { 284 size_t from_length; 285 286 from_length = strlen(from); 287 /* This zero-pads the destination */ 288 strncpy(to, from, to_length); 289 if (from_length < to_length && !compatible) { 290 /* 291 * space pad the string if it is short. 292 */ 293 memset(&to[from_length], ' ', to_length - from_length); 294 } 295 if (from_length > to_length) 296 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 297 __func__, name, from); 298 } 299 300 /** 301 * scsi_dev_info_list_add - add one dev_info list entry. 302 * @compatible: if true, null terminate short strings. Otherwise space pad. 303 * @vendor: vendor string 304 * @model: model (product) string 305 * @strflags: integer string 306 * @flags: if strflags NULL, use this flag value 307 * 308 * Description: 309 * Create and add one dev_info entry for @vendor, @model, @strflags or 310 * @flag. If @compatible, add to the tail of the list, do not space 311 * pad, and set devinfo->compatible. The scsi_static_device_list entries 312 * are added with @compatible 1 and @clfags NULL. 313 * 314 * Returns: 0 OK, -error on failure. 315 **/ 316 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 317 char *strflags, blist_flags_t flags) 318 { 319 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 320 strflags, flags, 321 SCSI_DEVINFO_GLOBAL); 322 } 323 324 /** 325 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 326 * @compatible: if true, null terminate short strings. Otherwise space pad. 327 * @vendor: vendor string 328 * @model: model (product) string 329 * @strflags: integer string 330 * @flags: if strflags NULL, use this flag value 331 * @key: specify list to use 332 * 333 * Description: 334 * Create and add one dev_info entry for @vendor, @model, 335 * @strflags or @flag in list specified by @key. If @compatible, 336 * add to the tail of the list, do not space pad, and set 337 * devinfo->compatible. The scsi_static_device_list entries are 338 * added with @compatible 1 and @clfags NULL. 339 * 340 * Returns: 0 OK, -error on failure. 341 **/ 342 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 343 char *strflags, blist_flags_t flags, 344 enum scsi_devinfo_key key) 345 { 346 struct scsi_dev_info_list *devinfo; 347 struct scsi_dev_info_list_table *devinfo_table = 348 scsi_devinfo_lookup_by_key(key); 349 350 if (IS_ERR(devinfo_table)) 351 return PTR_ERR(devinfo_table); 352 353 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 354 if (!devinfo) { 355 printk(KERN_ERR "%s: no memory\n", __func__); 356 return -ENOMEM; 357 } 358 359 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 360 vendor, compatible); 361 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 362 model, compatible); 363 364 if (strflags) 365 flags = (__force blist_flags_t)simple_strtoul(strflags, NULL, 0); 366 devinfo->flags = flags; 367 devinfo->compatible = compatible; 368 369 if (compatible) 370 list_add_tail(&devinfo->dev_info_list, 371 &devinfo_table->scsi_dev_info_list); 372 else 373 list_add(&devinfo->dev_info_list, 374 &devinfo_table->scsi_dev_info_list); 375 376 return 0; 377 } 378 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 379 380 /** 381 * scsi_dev_info_list_find - find a matching dev_info list entry. 382 * @vendor: full vendor string 383 * @model: full model (product) string 384 * @key: specify list to use 385 * 386 * Description: 387 * Finds the first dev_info entry matching @vendor, @model 388 * in list specified by @key. 389 * 390 * Returns: pointer to matching entry, or ERR_PTR on failure. 391 **/ 392 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 393 const char *model, enum scsi_devinfo_key key) 394 { 395 struct scsi_dev_info_list *devinfo; 396 struct scsi_dev_info_list_table *devinfo_table = 397 scsi_devinfo_lookup_by_key(key); 398 size_t vmax, mmax, mlen; 399 const char *vskip, *mskip; 400 401 if (IS_ERR(devinfo_table)) 402 return (struct scsi_dev_info_list *) devinfo_table; 403 404 /* Prepare for "compatible" matches */ 405 406 /* 407 * XXX why skip leading spaces? If an odd INQUIRY 408 * value, that should have been part of the 409 * scsi_static_device_list[] entry, such as " FOO" 410 * rather than "FOO". Since this code is already 411 * here, and we don't know what device it is 412 * trying to work with, leave it as-is. 413 */ 414 vmax = sizeof(devinfo->vendor); 415 vskip = vendor; 416 while (vmax > 0 && *vskip == ' ') { 417 vmax--; 418 vskip++; 419 } 420 /* Also skip trailing spaces */ 421 while (vmax > 0 && vskip[vmax - 1] == ' ') 422 --vmax; 423 424 mmax = sizeof(devinfo->model); 425 mskip = model; 426 while (mmax > 0 && *mskip == ' ') { 427 mmax--; 428 mskip++; 429 } 430 while (mmax > 0 && mskip[mmax - 1] == ' ') 431 --mmax; 432 433 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 434 dev_info_list) { 435 if (devinfo->compatible) { 436 /* 437 * vendor strings must be an exact match 438 */ 439 if (vmax != strnlen(devinfo->vendor, 440 sizeof(devinfo->vendor)) || 441 memcmp(devinfo->vendor, vskip, vmax)) 442 continue; 443 444 /* 445 * @model specifies the full string, and 446 * must be larger or equal to devinfo->model 447 */ 448 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 449 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 450 continue; 451 return devinfo; 452 } else { 453 if (!memcmp(devinfo->vendor, vendor, 454 sizeof(devinfo->vendor)) && 455 !memcmp(devinfo->model, model, 456 sizeof(devinfo->model))) 457 return devinfo; 458 } 459 } 460 461 return ERR_PTR(-ENOENT); 462 } 463 464 /** 465 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 466 * @vendor: vendor string 467 * @model: model (product) string 468 * @key: specify list to use 469 * 470 * Description: 471 * Remove and destroy one dev_info entry for @vendor, @model 472 * in list specified by @key. 473 * 474 * Returns: 0 OK, -error on failure. 475 **/ 476 int scsi_dev_info_list_del_keyed(char *vendor, char *model, 477 enum scsi_devinfo_key key) 478 { 479 struct scsi_dev_info_list *found; 480 481 found = scsi_dev_info_list_find(vendor, model, key); 482 if (IS_ERR(found)) 483 return PTR_ERR(found); 484 485 list_del(&found->dev_info_list); 486 kfree(found); 487 return 0; 488 } 489 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 490 491 /** 492 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 493 * @dev_list: string of device flags to add 494 * 495 * Description: 496 * Parse dev_list, and add entries to the scsi_dev_info_list. 497 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 498 * dev_list is modified via strsep. Can be called for command line 499 * addition, for proc or mabye a sysfs interface. 500 * 501 * Returns: 0 if OK, -error on failure. 502 **/ 503 static int scsi_dev_info_list_add_str(char *dev_list) 504 { 505 char *vendor, *model, *strflags, *next; 506 char *next_check; 507 int res = 0; 508 509 next = dev_list; 510 if (next && next[0] == '"') { 511 /* 512 * Ignore both the leading and trailing quote. 513 */ 514 next++; 515 next_check = ",\""; 516 } else { 517 next_check = ","; 518 } 519 520 /* 521 * For the leading and trailing '"' case, the for loop comes 522 * through the last time with vendor[0] == '\0'. 523 */ 524 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 525 && (res == 0); vendor = strsep(&next, ":")) { 526 strflags = NULL; 527 model = strsep(&next, ":"); 528 if (model) 529 strflags = strsep(&next, next_check); 530 if (!model || !strflags) { 531 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 532 " '%s'\n", __func__, vendor, model, 533 strflags); 534 res = -EINVAL; 535 } else 536 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 537 model, strflags, 0); 538 } 539 return res; 540 } 541 542 /** 543 * get_device_flags - get device specific flags from the dynamic device list. 544 * @sdev: &scsi_device to get flags for 545 * @vendor: vendor name 546 * @model: model name 547 * 548 * Description: 549 * Search the global scsi_dev_info_list (specified by list zero) 550 * for an entry matching @vendor and @model, if found, return the 551 * matching flags value, else return the host or global default 552 * settings. Called during scan time. 553 **/ 554 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 555 const unsigned char *vendor, 556 const unsigned char *model) 557 { 558 return scsi_get_device_flags_keyed(sdev, vendor, model, 559 SCSI_DEVINFO_GLOBAL); 560 } 561 562 563 /** 564 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 565 * @sdev: &scsi_device to get flags for 566 * @vendor: vendor name 567 * @model: model name 568 * @key: list to look up 569 * 570 * Description: 571 * Search the scsi_dev_info_list specified by @key for an entry 572 * matching @vendor and @model, if found, return the matching 573 * flags value, else return the host or global default settings. 574 * Called during scan time. 575 **/ 576 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 577 const unsigned char *vendor, 578 const unsigned char *model, 579 enum scsi_devinfo_key key) 580 { 581 struct scsi_dev_info_list *devinfo; 582 583 devinfo = scsi_dev_info_list_find(vendor, model, key); 584 if (!IS_ERR(devinfo)) 585 return devinfo->flags; 586 587 /* key or device not found: return nothing */ 588 if (key != SCSI_DEVINFO_GLOBAL) 589 return 0; 590 591 /* except for the global list, where we have an exception */ 592 if (sdev->sdev_bflags) 593 return sdev->sdev_bflags; 594 595 return scsi_default_dev_flags; 596 } 597 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 598 599 #ifdef CONFIG_SCSI_PROC_FS 600 struct double_list { 601 struct list_head *top; 602 struct list_head *bottom; 603 }; 604 605 static int devinfo_seq_show(struct seq_file *m, void *v) 606 { 607 struct double_list *dl = v; 608 struct scsi_dev_info_list_table *devinfo_table = 609 list_entry(dl->top, struct scsi_dev_info_list_table, node); 610 struct scsi_dev_info_list *devinfo = 611 list_entry(dl->bottom, struct scsi_dev_info_list, 612 dev_info_list); 613 614 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 615 devinfo_table->name) 616 seq_printf(m, "[%s]:\n", devinfo_table->name); 617 618 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 619 devinfo->vendor, devinfo->model, devinfo->flags); 620 return 0; 621 } 622 623 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 624 { 625 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 626 loff_t pos = *ppos; 627 628 if (!dl) 629 return NULL; 630 631 list_for_each(dl->top, &scsi_dev_info_list) { 632 struct scsi_dev_info_list_table *devinfo_table = 633 list_entry(dl->top, struct scsi_dev_info_list_table, 634 node); 635 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 636 if (pos-- == 0) 637 return dl; 638 } 639 640 kfree(dl); 641 return NULL; 642 } 643 644 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 645 { 646 struct double_list *dl = v; 647 struct scsi_dev_info_list_table *devinfo_table = 648 list_entry(dl->top, struct scsi_dev_info_list_table, node); 649 650 ++*ppos; 651 dl->bottom = dl->bottom->next; 652 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 653 dl->top = dl->top->next; 654 if (dl->top == &scsi_dev_info_list) { 655 kfree(dl); 656 return NULL; 657 } 658 devinfo_table = list_entry(dl->top, 659 struct scsi_dev_info_list_table, 660 node); 661 dl->bottom = devinfo_table->scsi_dev_info_list.next; 662 } 663 664 return dl; 665 } 666 667 static void devinfo_seq_stop(struct seq_file *m, void *v) 668 { 669 kfree(v); 670 } 671 672 static const struct seq_operations scsi_devinfo_seq_ops = { 673 .start = devinfo_seq_start, 674 .next = devinfo_seq_next, 675 .stop = devinfo_seq_stop, 676 .show = devinfo_seq_show, 677 }; 678 679 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 680 { 681 return seq_open(file, &scsi_devinfo_seq_ops); 682 } 683 684 /* 685 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 686 * 687 * Description: Adds a black/white list entry for vendor and model with an 688 * integer value of flag to the scsi device info list. 689 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 690 */ 691 static ssize_t proc_scsi_devinfo_write(struct file *file, 692 const char __user *buf, 693 size_t length, loff_t *ppos) 694 { 695 char *buffer; 696 ssize_t err = length; 697 698 if (!buf || length>PAGE_SIZE) 699 return -EINVAL; 700 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 701 return -ENOMEM; 702 if (copy_from_user(buffer, buf, length)) { 703 err =-EFAULT; 704 goto out; 705 } 706 707 if (length < PAGE_SIZE) 708 buffer[length] = '\0'; 709 else if (buffer[PAGE_SIZE-1]) { 710 err = -EINVAL; 711 goto out; 712 } 713 714 scsi_dev_info_list_add_str(buffer); 715 716 out: 717 free_page((unsigned long)buffer); 718 return err; 719 } 720 721 static const struct file_operations scsi_devinfo_proc_fops = { 722 .owner = THIS_MODULE, 723 .open = proc_scsi_devinfo_open, 724 .read = seq_read, 725 .write = proc_scsi_devinfo_write, 726 .llseek = seq_lseek, 727 .release = seq_release, 728 }; 729 #endif /* CONFIG_SCSI_PROC_FS */ 730 731 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 732 MODULE_PARM_DESC(dev_flags, 733 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 734 " list entries for vendor and model with an integer value of flags" 735 " to the scsi device info list"); 736 737 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 738 MODULE_PARM_DESC(default_dev_flags, 739 "scsi default device flag integer value"); 740 741 /** 742 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 743 **/ 744 void scsi_exit_devinfo(void) 745 { 746 #ifdef CONFIG_SCSI_PROC_FS 747 remove_proc_entry("scsi/device_info", NULL); 748 #endif 749 750 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 751 } 752 753 /** 754 * scsi_dev_info_add_list - add a new devinfo list 755 * @key: key of the list to add 756 * @name: Name of the list to add (for /proc/scsi/device_info) 757 * 758 * Adds the requested list, returns zero on success, -EEXIST if the 759 * key is already registered to a list, or other error on failure. 760 */ 761 int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 762 { 763 struct scsi_dev_info_list_table *devinfo_table = 764 scsi_devinfo_lookup_by_key(key); 765 766 if (!IS_ERR(devinfo_table)) 767 /* list already exists */ 768 return -EEXIST; 769 770 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 771 772 if (!devinfo_table) 773 return -ENOMEM; 774 775 INIT_LIST_HEAD(&devinfo_table->node); 776 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 777 devinfo_table->name = name; 778 devinfo_table->key = key; 779 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 780 781 return 0; 782 } 783 EXPORT_SYMBOL(scsi_dev_info_add_list); 784 785 /** 786 * scsi_dev_info_remove_list - destroy an added devinfo list 787 * @key: key of the list to destroy 788 * 789 * Iterates over the entire list first, freeing all the values, then 790 * frees the list itself. Returns 0 on success or -EINVAL if the key 791 * can't be found. 792 */ 793 int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 794 { 795 struct list_head *lh, *lh_next; 796 struct scsi_dev_info_list_table *devinfo_table = 797 scsi_devinfo_lookup_by_key(key); 798 799 if (IS_ERR(devinfo_table)) 800 /* no such list */ 801 return -EINVAL; 802 803 /* remove from the master list */ 804 list_del(&devinfo_table->node); 805 806 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 807 struct scsi_dev_info_list *devinfo; 808 809 devinfo = list_entry(lh, struct scsi_dev_info_list, 810 dev_info_list); 811 kfree(devinfo); 812 } 813 kfree(devinfo_table); 814 815 return 0; 816 } 817 EXPORT_SYMBOL(scsi_dev_info_remove_list); 818 819 /** 820 * scsi_init_devinfo - set up the dynamic device list. 821 * 822 * Description: 823 * Add command line entries from scsi_dev_flags, then add 824 * scsi_static_device_list entries to the scsi device info list. 825 */ 826 int __init scsi_init_devinfo(void) 827 { 828 #ifdef CONFIG_SCSI_PROC_FS 829 struct proc_dir_entry *p; 830 #endif 831 int error, i; 832 833 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 834 if (error) 835 return error; 836 837 error = scsi_dev_info_list_add_str(scsi_dev_flags); 838 if (error) 839 goto out; 840 841 for (i = 0; scsi_static_device_list[i].vendor; i++) { 842 error = scsi_dev_info_list_add(1 /* compatibile */, 843 scsi_static_device_list[i].vendor, 844 scsi_static_device_list[i].model, 845 NULL, 846 scsi_static_device_list[i].flags); 847 if (error) 848 goto out; 849 } 850 851 #ifdef CONFIG_SCSI_PROC_FS 852 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 853 if (!p) { 854 error = -ENOMEM; 855 goto out; 856 } 857 #endif /* CONFIG_SCSI_PROC_FS */ 858 859 out: 860 if (error) 861 scsi_exit_devinfo(); 862 return error; 863 } 864