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: list of devices that require settings that differ 43 * from the default, includes black-listed (broken) devices. The entries here 44 * are added to the tail of scsi_dev_info_list via scsi_dev_info_list_init. 45 * 46 * If possible, set the BLIST_* flags from inside a SCSI LLD rather than 47 * adding an entry to this list. 48 */ 49 static struct { 50 char *vendor; 51 char *model; 52 char *revision; /* revision known to be bad, unused */ 53 blist_flags_t flags; 54 } scsi_static_device_list[] __initdata = { 55 /* 56 * The following devices are known not to tolerate a lun != 0 scan 57 * for one reason or another. Some will respond to all luns, 58 * others will lock up. 59 */ 60 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ 61 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ 62 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ 63 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ 64 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ 65 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ 66 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */ 67 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */ 68 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ 69 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ 70 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ 71 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ 72 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ 73 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ 74 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ 75 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ 76 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ 77 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ 78 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ 79 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ 80 /* 81 * The following causes a failed REQUEST SENSE on lun 1 for 82 * aha152x controller, which causes SCSI code to reset bus. 83 */ 84 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, 85 /* 86 * The following causes a failed REQUEST SENSE on lun 1 for 87 * aha152x controller, which causes SCSI code to reset bus. 88 */ 89 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, 90 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ 91 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ 92 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, 93 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, 94 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, 95 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, 96 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, 97 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ 98 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ 99 /* 100 * The following causes a failed REQUEST SENSE on lun 1 for 101 * seagate controller, which causes SCSI code to reset bus. 102 */ 103 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, 104 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ 105 /* 106 * The following causes a failed REQUEST SENSE on lun 1 for 107 * seagate controller, which causes SCSI code to reset bus. 108 */ 109 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ 110 {"HP", "C1790A", NULL, BLIST_NOLUN}, /* scanjet iip */ 111 {"HP", "C2500A", NULL, BLIST_NOLUN}, /* scanjet iicx */ 112 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ 113 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ 114 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ 115 {"NEC", "D3856", "0009", BLIST_NOLUN}, 116 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ 117 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ 118 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ 119 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ 120 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ 121 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN | BLIST_BORKEN}, 122 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, 123 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ 124 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ 125 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ 126 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ 127 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ 128 129 /* 130 * Other types of devices that have special flags. 131 * Note that all USB devices should have the BLIST_INQUIRY_36 flag. 132 */ 133 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, 134 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, 135 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, 136 {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES | BLIST_NO_VPD_SIZE}, 137 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 138 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 139 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, 140 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 141 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 142 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 143 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 144 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 145 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 146 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 147 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 148 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 149 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 150 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 151 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 152 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 153 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 154 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 155 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 156 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 157 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 158 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 159 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 160 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, storage on LUN 0 */ 161 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */ 162 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 163 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 164 BLIST_REPORTLUN2 | BLIST_RETRY_ITF}, 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 {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1}, 171 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 172 {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */ 173 {"Generic", "Ultra HS-SD/MMC", "2.09", BLIST_IGN_MEDIA_CHANGE | BLIST_INQUIRY_36}, 174 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 175 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 177 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, 178 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 179 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 180 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */ 181 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 182 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 183 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 184 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 185 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 186 {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 187 {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 188 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 189 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 190 {"IBM", "2076", NULL, BLIST_NO_VPD_SIZE}, 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 | BLIST_SKIP_IO_HINTS}, 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 E310", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 222 {"Promise", "VTrak E610", 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; 273 274 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 275 if (devinfo_table->key == key) 276 return devinfo_table; 277 278 return ERR_PTR(-EINVAL); 279 } 280 281 /* 282 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 283 * devinfo vendor and model strings. 284 */ 285 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 286 char *from, int compatible) 287 { 288 size_t from_length; 289 290 from_length = strlen(from); 291 292 /* 293 * null pad and null terminate if compatible 294 * otherwise space pad 295 */ 296 if (compatible) 297 strscpy_pad(to, from, to_length); 298 else 299 memcpy_and_pad(to, to_length, from, from_length, ' '); 300 301 if (from_length > to_length) 302 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 303 __func__, name, from); 304 } 305 306 /** 307 * scsi_dev_info_list_add - add one dev_info list entry. 308 * @compatible: if true, null terminate short strings. Otherwise space pad. 309 * @vendor: vendor string 310 * @model: model (product) string 311 * @strflags: integer string 312 * @flags: if strflags NULL, use this flag value 313 * 314 * Description: 315 * Create and add one dev_info entry for @vendor, @model, @strflags or 316 * @flag. If @compatible, add to the tail of the list, do not space 317 * pad, and set devinfo->compatible. The scsi_static_device_list entries 318 * are added with @compatible 1 and @clfags NULL. 319 * 320 * Returns: 0 OK, -error on failure. 321 **/ 322 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 323 char *strflags, blist_flags_t flags) 324 { 325 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 326 strflags, flags, 327 SCSI_DEVINFO_GLOBAL); 328 } 329 330 /** 331 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 332 * @compatible: if true, null terminate short strings. Otherwise space pad. 333 * @vendor: vendor string 334 * @model: model (product) string 335 * @strflags: integer string 336 * @flags: if strflags NULL, use this flag value 337 * @key: specify list to use 338 * 339 * Description: 340 * Create and add one dev_info entry for @vendor, @model, 341 * @strflags or @flag in list specified by @key. If @compatible, 342 * add to the tail of the list, do not space pad, and set 343 * devinfo->compatible. The scsi_static_device_list entries are 344 * added with @compatible 1 and @clfags NULL. 345 * 346 * Returns: 0 OK, -error on failure. 347 **/ 348 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 349 char *strflags, blist_flags_t flags, 350 enum scsi_devinfo_key key) 351 { 352 struct scsi_dev_info_list *devinfo; 353 struct scsi_dev_info_list_table *devinfo_table = 354 scsi_devinfo_lookup_by_key(key); 355 356 if (IS_ERR(devinfo_table)) 357 return PTR_ERR(devinfo_table); 358 359 devinfo = kmalloc_obj(*devinfo); 360 if (!devinfo) { 361 printk(KERN_ERR "%s: no memory\n", __func__); 362 return -ENOMEM; 363 } 364 365 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 366 vendor, compatible); 367 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 368 model, compatible); 369 370 if (strflags) { 371 unsigned long long val; 372 int ret = kstrtoull(strflags, 0, &val); 373 374 if (ret != 0) { 375 kfree(devinfo); 376 return ret; 377 } 378 flags = (__force blist_flags_t)val; 379 } 380 if (flags & __BLIST_UNUSED_MASK) { 381 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 382 vendor, model, flags & __BLIST_UNUSED_MASK); 383 kfree(devinfo); 384 return -EINVAL; 385 } 386 devinfo->flags = flags; 387 devinfo->compatible = compatible; 388 389 if (compatible) 390 list_add_tail(&devinfo->dev_info_list, 391 &devinfo_table->scsi_dev_info_list); 392 else 393 list_add(&devinfo->dev_info_list, 394 &devinfo_table->scsi_dev_info_list); 395 396 return 0; 397 } 398 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 399 400 /** 401 * scsi_dev_info_list_find - find a matching dev_info list entry. 402 * @vendor: full vendor string 403 * @model: full model (product) string 404 * @key: specify list to use 405 * 406 * Description: 407 * Finds the first dev_info entry matching @vendor, @model 408 * in list specified by @key. 409 * 410 * Returns: pointer to matching entry, or ERR_PTR on failure. 411 **/ 412 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 413 const char *model, enum scsi_devinfo_key key) 414 { 415 struct scsi_dev_info_list *devinfo; 416 struct scsi_dev_info_list_table *devinfo_table = 417 scsi_devinfo_lookup_by_key(key); 418 size_t vmax, mmax, mlen; 419 const char *vskip, *mskip; 420 421 if (IS_ERR(devinfo_table)) 422 return (struct scsi_dev_info_list *) devinfo_table; 423 424 /* Prepare for "compatible" matches */ 425 426 /* 427 * XXX why skip leading spaces? If an odd INQUIRY 428 * value, that should have been part of the 429 * scsi_static_device_list[] entry, such as " FOO" 430 * rather than "FOO". Since this code is already 431 * here, and we don't know what device it is 432 * trying to work with, leave it as-is. 433 */ 434 vmax = sizeof(devinfo->vendor); 435 vskip = vendor; 436 while (vmax > 0 && *vskip == ' ') { 437 vmax--; 438 vskip++; 439 } 440 /* Also skip trailing spaces */ 441 while (vmax > 0 && vskip[vmax - 1] == ' ') 442 --vmax; 443 444 mmax = sizeof(devinfo->model); 445 mskip = model; 446 while (mmax > 0 && *mskip == ' ') { 447 mmax--; 448 mskip++; 449 } 450 while (mmax > 0 && mskip[mmax - 1] == ' ') 451 --mmax; 452 453 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 454 dev_info_list) { 455 if (devinfo->compatible) { 456 /* 457 * vendor strings must be an exact match 458 */ 459 if (vmax != strnlen(devinfo->vendor, 460 sizeof(devinfo->vendor)) || 461 memcmp(devinfo->vendor, vskip, vmax)) 462 continue; 463 464 /* 465 * @model specifies the full string, and 466 * must be larger or equal to devinfo->model 467 */ 468 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 469 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 470 continue; 471 return devinfo; 472 } else { 473 if (!memcmp(devinfo->vendor, vendor, 474 sizeof(devinfo->vendor)) && 475 !memcmp(devinfo->model, model, 476 sizeof(devinfo->model))) 477 return devinfo; 478 } 479 } 480 481 return ERR_PTR(-ENOENT); 482 } 483 484 /** 485 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 486 * @dev_list: string of device flags to add 487 * 488 * Description: 489 * Parse dev_list, and add entries to the scsi_dev_info_list. 490 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 491 * dev_list is modified via strsep. Can be called for command line 492 * addition, for proc or mabye a sysfs interface. 493 * 494 * Returns: 0 if OK, -error on failure. 495 **/ 496 static int scsi_dev_info_list_add_str(char *dev_list) 497 { 498 char *vendor, *model, *strflags, *next; 499 char *next_check; 500 int res = 0; 501 502 next = dev_list; 503 if (next && next[0] == '"') { 504 /* 505 * Ignore both the leading and trailing quote. 506 */ 507 next++; 508 next_check = ",\""; 509 } else { 510 next_check = ","; 511 } 512 513 /* 514 * For the leading and trailing '"' case, the for loop comes 515 * through the last time with vendor[0] == '\0'. 516 */ 517 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 518 && (res == 0); vendor = strsep(&next, ":")) { 519 strflags = NULL; 520 model = strsep(&next, ":"); 521 if (model) 522 strflags = strsep(&next, next_check); 523 if (!model || !strflags) { 524 pr_err("%s: bad dev info string '%s' '%s' '%s'\n", 525 __func__, vendor, model ? model : "", 526 strflags ? strflags : ""); 527 res = -EINVAL; 528 } else 529 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 530 model, strflags, 0); 531 } 532 return res; 533 } 534 535 /** 536 * scsi_get_device_flags - get device specific flags from the dynamic 537 * device list. 538 * @sdev: &scsi_device to get flags for 539 * @vendor: vendor name 540 * @model: model name 541 * 542 * Description: 543 * Search the global scsi_dev_info_list (specified by list zero) 544 * for an entry matching @vendor and @model, if found, return the 545 * matching flags value, else return the host or global default 546 * settings. Called during scan time. 547 **/ 548 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 549 const unsigned char *vendor, 550 const unsigned char *model) 551 { 552 return scsi_get_device_flags_keyed(sdev, vendor, model, 553 SCSI_DEVINFO_GLOBAL); 554 } 555 556 557 /** 558 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 559 * @sdev: &scsi_device to get flags for 560 * @vendor: vendor name 561 * @model: model name 562 * @key: list to look up 563 * 564 * Description: 565 * Search the scsi_dev_info_list specified by @key for an entry 566 * matching @vendor and @model, if found, return the matching 567 * flags value, else return the host or global default settings. 568 * Called during scan time. 569 **/ 570 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 571 const unsigned char *vendor, 572 const unsigned char *model, 573 enum scsi_devinfo_key key) 574 { 575 struct scsi_dev_info_list *devinfo; 576 577 devinfo = scsi_dev_info_list_find(vendor, model, key); 578 if (!IS_ERR(devinfo)) 579 return devinfo->flags; 580 581 /* key or device not found: return nothing */ 582 if (key != SCSI_DEVINFO_GLOBAL) 583 return 0; 584 585 /* except for the global list, where we have an exception */ 586 if (sdev->sdev_bflags) 587 return sdev->sdev_bflags; 588 589 return scsi_default_dev_flags; 590 } 591 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 592 593 #ifdef CONFIG_SCSI_PROC_FS 594 struct double_list { 595 struct list_head *top; 596 struct list_head *bottom; 597 }; 598 599 static int devinfo_seq_show(struct seq_file *m, void *v) 600 { 601 struct double_list *dl = v; 602 struct scsi_dev_info_list_table *devinfo_table = 603 list_entry(dl->top, struct scsi_dev_info_list_table, node); 604 struct scsi_dev_info_list *devinfo = 605 list_entry(dl->bottom, struct scsi_dev_info_list, 606 dev_info_list); 607 608 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 609 devinfo_table->name) 610 seq_printf(m, "[%s]:\n", devinfo_table->name); 611 612 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 613 devinfo->vendor, devinfo->model, devinfo->flags); 614 return 0; 615 } 616 617 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 618 { 619 struct double_list *dl = kmalloc_obj(*dl); 620 loff_t pos = *ppos; 621 622 if (!dl) 623 return NULL; 624 625 list_for_each(dl->top, &scsi_dev_info_list) { 626 struct scsi_dev_info_list_table *devinfo_table = 627 list_entry(dl->top, struct scsi_dev_info_list_table, 628 node); 629 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 630 if (pos-- == 0) 631 return dl; 632 } 633 634 kfree(dl); 635 return NULL; 636 } 637 638 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 639 { 640 struct double_list *dl = v; 641 struct scsi_dev_info_list_table *devinfo_table = 642 list_entry(dl->top, struct scsi_dev_info_list_table, node); 643 644 ++*ppos; 645 dl->bottom = dl->bottom->next; 646 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 647 dl->top = dl->top->next; 648 if (dl->top == &scsi_dev_info_list) { 649 kfree(dl); 650 return NULL; 651 } 652 devinfo_table = list_entry(dl->top, 653 struct scsi_dev_info_list_table, 654 node); 655 dl->bottom = devinfo_table->scsi_dev_info_list.next; 656 } 657 658 return dl; 659 } 660 661 static void devinfo_seq_stop(struct seq_file *m, void *v) 662 { 663 kfree(v); 664 } 665 666 static const struct seq_operations scsi_devinfo_seq_ops = { 667 .start = devinfo_seq_start, 668 .next = devinfo_seq_next, 669 .stop = devinfo_seq_stop, 670 .show = devinfo_seq_show, 671 }; 672 673 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 674 { 675 return seq_open(file, &scsi_devinfo_seq_ops); 676 } 677 678 /* 679 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 680 * 681 * Description: Adds a black/white list entry for vendor and model with an 682 * integer value of flag to the scsi device info list. 683 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 684 */ 685 static ssize_t proc_scsi_devinfo_write(struct file *file, 686 const char __user *buf, 687 size_t length, loff_t *ppos) 688 { 689 char *buffer; 690 ssize_t err = length; 691 692 if (!buf || length>PAGE_SIZE) 693 return -EINVAL; 694 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 695 return -ENOMEM; 696 if (copy_from_user(buffer, buf, length)) { 697 err =-EFAULT; 698 goto out; 699 } 700 701 if (length < PAGE_SIZE) 702 buffer[length] = '\0'; 703 else if (buffer[PAGE_SIZE-1]) { 704 err = -EINVAL; 705 goto out; 706 } 707 708 scsi_dev_info_list_add_str(buffer); 709 710 out: 711 free_page((unsigned long)buffer); 712 return err; 713 } 714 715 static const struct proc_ops scsi_devinfo_proc_ops = { 716 .proc_open = proc_scsi_devinfo_open, 717 .proc_read = seq_read, 718 .proc_write = proc_scsi_devinfo_write, 719 .proc_lseek = seq_lseek, 720 .proc_release = seq_release, 721 }; 722 #endif /* CONFIG_SCSI_PROC_FS */ 723 724 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 725 MODULE_PARM_DESC(dev_flags, 726 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 727 " list entries for vendor and model with an integer value of flags" 728 " to the scsi device info list"); 729 730 module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 731 MODULE_PARM_DESC(default_dev_flags, 732 "scsi default device flag uint64_t value"); 733 734 /** 735 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 736 **/ 737 void scsi_exit_devinfo(void) 738 { 739 #ifdef CONFIG_SCSI_PROC_FS 740 remove_proc_entry("scsi/device_info", NULL); 741 #endif 742 743 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 744 } 745 746 /** 747 * scsi_dev_info_add_list - add a new devinfo list 748 * @key: key of the list to add 749 * @name: Name of the list to add (for /proc/scsi/device_info) 750 * 751 * Adds the requested list, returns zero on success, -EEXIST if the 752 * key is already registered to a list, or other error on failure. 753 */ 754 int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 755 { 756 struct scsi_dev_info_list_table *devinfo_table = 757 scsi_devinfo_lookup_by_key(key); 758 759 if (!IS_ERR(devinfo_table)) 760 /* list already exists */ 761 return -EEXIST; 762 763 devinfo_table = kmalloc_obj(*devinfo_table); 764 765 if (!devinfo_table) 766 return -ENOMEM; 767 768 INIT_LIST_HEAD(&devinfo_table->node); 769 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 770 devinfo_table->name = name; 771 devinfo_table->key = key; 772 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 773 774 return 0; 775 } 776 EXPORT_SYMBOL(scsi_dev_info_add_list); 777 778 /** 779 * scsi_dev_info_remove_list - destroy an added devinfo list 780 * @key: key of the list to destroy 781 * 782 * Iterates over the entire list first, freeing all the values, then 783 * frees the list itself. Returns 0 on success or -EINVAL if the key 784 * can't be found. 785 */ 786 int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 787 { 788 struct list_head *lh, *lh_next; 789 struct scsi_dev_info_list_table *devinfo_table = 790 scsi_devinfo_lookup_by_key(key); 791 792 if (IS_ERR(devinfo_table)) 793 /* no such list */ 794 return -EINVAL; 795 796 /* remove from the master list */ 797 list_del(&devinfo_table->node); 798 799 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 800 struct scsi_dev_info_list *devinfo; 801 802 devinfo = list_entry(lh, struct scsi_dev_info_list, 803 dev_info_list); 804 kfree(devinfo); 805 } 806 kfree(devinfo_table); 807 808 return 0; 809 } 810 EXPORT_SYMBOL(scsi_dev_info_remove_list); 811 812 /** 813 * scsi_init_devinfo - set up the dynamic device list. 814 * 815 * Description: 816 * Add command line entries from scsi_dev_flags, then add 817 * scsi_static_device_list entries to the scsi device info list. 818 */ 819 int __init scsi_init_devinfo(void) 820 { 821 #ifdef CONFIG_SCSI_PROC_FS 822 struct proc_dir_entry *p; 823 #endif 824 int error, i; 825 826 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 827 if (error) 828 return error; 829 830 error = scsi_dev_info_list_add_str(scsi_dev_flags); 831 if (error) 832 goto out; 833 834 for (i = 0; scsi_static_device_list[i].vendor; i++) { 835 error = scsi_dev_info_list_add(1 /* compatible */, 836 scsi_static_device_list[i].vendor, 837 scsi_static_device_list[i].model, 838 NULL, 839 scsi_static_device_list[i].flags); 840 if (error) 841 goto out; 842 } 843 844 #ifdef CONFIG_SCSI_PROC_FS 845 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops); 846 if (!p) { 847 error = -ENOMEM; 848 goto out; 849 } 850 #endif /* CONFIG_SCSI_PROC_FS */ 851 852 out: 853 if (error) 854 scsi_exit_devinfo(); 855 return error; 856 } 857