1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <linux/blkdev.h> 4 #include <linux/init.h> 5 #include <linux/kernel.h> 6 #include <linux/module.h> 7 #include <linux/moduleparam.h> 8 #include <linux/proc_fs.h> 9 #include <linux/seq_file.h> 10 #include <linux/slab.h> 11 12 #include <scsi/scsi_device.h> 13 #include <scsi/scsi_devinfo.h> 14 15 #include "scsi_priv.h" 16 17 18 /* 19 * scsi_dev_info_list: structure to hold black/white listed devices. 20 */ 21 struct scsi_dev_info_list { 22 struct list_head dev_info_list; 23 char vendor[8]; 24 char model[16]; 25 blist_flags_t flags; 26 unsigned compatible; /* for use with scsi_static_device_list entries */ 27 }; 28 29 struct scsi_dev_info_list_table { 30 struct list_head node; /* our node for being on the master list */ 31 struct list_head scsi_dev_info_list; /* head of dev info list */ 32 const char *name; /* name of list for /proc (NULL for global) */ 33 int key; /* unique numeric identifier */ 34 }; 35 36 37 static blist_flags_t scsi_default_dev_flags; 38 static LIST_HEAD(scsi_dev_info_list); 39 static char scsi_dev_flags[256]; 40 41 /* 42 * scsi_static_device_list: deprecated list of devices that require 43 * settings that differ from the default, includes black-listed (broken) 44 * devices. The entries here are added to the tail of scsi_dev_info_list 45 * via scsi_dev_info_list_init. 46 * 47 * Do not add to this list, use the command line or proc interface to add 48 * to the scsi_dev_info_list. This table will eventually go away. 49 */ 50 static struct { 51 char *vendor; 52 char *model; 53 char *revision; /* revision known to be bad, unused */ 54 blist_flags_t flags; 55 } scsi_static_device_list[] __initdata = { 56 /* 57 * The following devices are known not to tolerate a lun != 0 scan 58 * for one reason or another. Some will respond to all luns, 59 * others will lock up. 60 */ 61 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ 62 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ 63 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ 64 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ 65 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ 66 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ 67 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */ 68 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */ 69 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ 70 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ 71 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ 72 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ 73 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ 74 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ 75 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ 76 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ 77 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ 78 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ 79 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ 80 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ 81 /* 82 * The following causes a failed REQUEST SENSE on lun 1 for 83 * aha152x controller, which causes SCSI code to reset bus. 84 */ 85 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, 86 /* 87 * The following causes a failed REQUEST SENSE on lun 1 for 88 * aha152x controller, which causes SCSI code to reset bus. 89 */ 90 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, 91 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ 92 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ 93 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, 94 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, 95 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, 96 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, 97 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, 98 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ 99 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ 100 /* 101 * The following causes a failed REQUEST SENSE on lun 1 for 102 * seagate controller, which causes SCSI code to reset bus. 103 */ 104 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, 105 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ 106 /* 107 * The following causes a failed REQUEST SENSE on lun 1 for 108 * seagate controller, which causes SCSI code to reset bus. 109 */ 110 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ 111 {"HP", "C1790A", NULL, BLIST_NOLUN}, /* scanjet iip */ 112 {"HP", "C2500A", NULL, BLIST_NOLUN}, /* scanjet iicx */ 113 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ 114 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ 115 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ 116 {"NEC", "D3856", "0009", BLIST_NOLUN}, 117 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ 118 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ 119 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ 120 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ 121 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ 122 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN | BLIST_BORKEN}, 123 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, 124 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ 125 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ 126 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ 127 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ 128 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ 129 130 /* 131 * Other types of devices that have special flags. 132 * Note that all USB devices should have the BLIST_INQUIRY_36 flag. 133 */ 134 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, 135 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, 136 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, 137 {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES | BLIST_NO_VPD_SIZE}, 138 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 139 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 140 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, 141 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 142 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 143 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 144 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 145 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 146 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 147 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 148 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 149 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 150 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 151 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 152 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 153 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 154 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 155 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 156 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 157 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 158 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 159 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 160 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 161 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, storage on LUN 0 */ 162 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */ 163 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 164 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 165 BLIST_REPORTLUN2 | BLIST_RETRY_ITF}, 166 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 167 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 168 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 169 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 170 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 171 {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1}, 172 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 173 {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */ 174 {"Generic", "Ultra HS-SD/MMC", "2.09", BLIST_IGN_MEDIA_CHANGE | BLIST_INQUIRY_36}, 175 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 177 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 178 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, 179 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 180 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 181 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */ 182 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 183 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 184 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 185 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 186 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 187 {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 188 {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 189 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 190 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"IBM", "2076", NULL, BLIST_NO_VPD_SIZE}, 192 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 193 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 194 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 195 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 196 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 197 {"INSITE", "I325VM", NULL, BLIST_KEY}, 198 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 199 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 200 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 201 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 202 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 203 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 204 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 205 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 206 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 207 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 208 {"MICROP", "4110", NULL, BLIST_NOTQ}, 209 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC}, 210 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 211 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 212 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 213 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 216 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 223 {"Promise", "", NULL, BLIST_SPARSELUN}, 224 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 225 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 226 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 227 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 228 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 229 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 230 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 231 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 232 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 233 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 234 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 235 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 236 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 242 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 243 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 244 {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 245 {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 246 {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES | 247 BLIST_INQUIRY_36}, 248 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 249 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 250 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 251 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 252 {"SUN", "T300", "*", BLIST_SPARSELUN}, 253 {"SUN", "T4", "*", BLIST_SPARSELUN}, 254 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 255 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 256 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 257 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 258 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 259 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 260 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 261 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 262 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 263 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 264 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 265 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 266 { NULL, NULL, NULL, 0 }, 267 }; 268 269 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 270 { 271 struct scsi_dev_info_list_table *devinfo_table; 272 int found = 0; 273 274 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 275 if (devinfo_table->key == key) { 276 found = 1; 277 break; 278 } 279 if (!found) 280 return ERR_PTR(-EINVAL); 281 282 return devinfo_table; 283 } 284 285 /* 286 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 287 * devinfo vendor and model strings. 288 */ 289 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 290 char *from, int compatible) 291 { 292 size_t from_length; 293 294 from_length = strlen(from); 295 /* This zero-pads the destination */ 296 strncpy(to, from, to_length); 297 if (from_length < to_length && !compatible) { 298 /* 299 * space pad the string if it is short. 300 */ 301 memset(&to[from_length], ' ', to_length - from_length); 302 } 303 if (from_length > to_length) 304 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 305 __func__, name, from); 306 } 307 308 /** 309 * scsi_dev_info_list_add - add one dev_info list entry. 310 * @compatible: if true, null terminate short strings. Otherwise space pad. 311 * @vendor: vendor string 312 * @model: model (product) string 313 * @strflags: integer string 314 * @flags: if strflags NULL, use this flag value 315 * 316 * Description: 317 * Create and add one dev_info entry for @vendor, @model, @strflags or 318 * @flag. If @compatible, add to the tail of the list, do not space 319 * pad, and set devinfo->compatible. The scsi_static_device_list entries 320 * are added with @compatible 1 and @clfags NULL. 321 * 322 * Returns: 0 OK, -error on failure. 323 **/ 324 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 325 char *strflags, blist_flags_t flags) 326 { 327 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 328 strflags, flags, 329 SCSI_DEVINFO_GLOBAL); 330 } 331 332 /** 333 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 334 * @compatible: if true, null terminate short strings. Otherwise space pad. 335 * @vendor: vendor string 336 * @model: model (product) string 337 * @strflags: integer string 338 * @flags: if strflags NULL, use this flag value 339 * @key: specify list to use 340 * 341 * Description: 342 * Create and add one dev_info entry for @vendor, @model, 343 * @strflags or @flag in list specified by @key. If @compatible, 344 * add to the tail of the list, do not space pad, and set 345 * devinfo->compatible. The scsi_static_device_list entries are 346 * added with @compatible 1 and @clfags NULL. 347 * 348 * Returns: 0 OK, -error on failure. 349 **/ 350 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 351 char *strflags, blist_flags_t flags, 352 enum scsi_devinfo_key key) 353 { 354 struct scsi_dev_info_list *devinfo; 355 struct scsi_dev_info_list_table *devinfo_table = 356 scsi_devinfo_lookup_by_key(key); 357 358 if (IS_ERR(devinfo_table)) 359 return PTR_ERR(devinfo_table); 360 361 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 362 if (!devinfo) { 363 printk(KERN_ERR "%s: no memory\n", __func__); 364 return -ENOMEM; 365 } 366 367 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 368 vendor, compatible); 369 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 370 model, compatible); 371 372 if (strflags) { 373 unsigned long long val; 374 int ret = kstrtoull(strflags, 0, &val); 375 376 if (ret != 0) { 377 kfree(devinfo); 378 return ret; 379 } 380 flags = (__force blist_flags_t)val; 381 } 382 if (flags & __BLIST_UNUSED_MASK) { 383 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 384 vendor, model, flags & __BLIST_UNUSED_MASK); 385 kfree(devinfo); 386 return -EINVAL; 387 } 388 devinfo->flags = flags; 389 devinfo->compatible = compatible; 390 391 if (compatible) 392 list_add_tail(&devinfo->dev_info_list, 393 &devinfo_table->scsi_dev_info_list); 394 else 395 list_add(&devinfo->dev_info_list, 396 &devinfo_table->scsi_dev_info_list); 397 398 return 0; 399 } 400 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 401 402 /** 403 * scsi_dev_info_list_find - find a matching dev_info list entry. 404 * @vendor: full vendor string 405 * @model: full model (product) string 406 * @key: specify list to use 407 * 408 * Description: 409 * Finds the first dev_info entry matching @vendor, @model 410 * in list specified by @key. 411 * 412 * Returns: pointer to matching entry, or ERR_PTR on failure. 413 **/ 414 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 415 const char *model, enum scsi_devinfo_key key) 416 { 417 struct scsi_dev_info_list *devinfo; 418 struct scsi_dev_info_list_table *devinfo_table = 419 scsi_devinfo_lookup_by_key(key); 420 size_t vmax, mmax, mlen; 421 const char *vskip, *mskip; 422 423 if (IS_ERR(devinfo_table)) 424 return (struct scsi_dev_info_list *) devinfo_table; 425 426 /* Prepare for "compatible" matches */ 427 428 /* 429 * XXX why skip leading spaces? If an odd INQUIRY 430 * value, that should have been part of the 431 * scsi_static_device_list[] entry, such as " FOO" 432 * rather than "FOO". Since this code is already 433 * here, and we don't know what device it is 434 * trying to work with, leave it as-is. 435 */ 436 vmax = sizeof(devinfo->vendor); 437 vskip = vendor; 438 while (vmax > 0 && *vskip == ' ') { 439 vmax--; 440 vskip++; 441 } 442 /* Also skip trailing spaces */ 443 while (vmax > 0 && vskip[vmax - 1] == ' ') 444 --vmax; 445 446 mmax = sizeof(devinfo->model); 447 mskip = model; 448 while (mmax > 0 && *mskip == ' ') { 449 mmax--; 450 mskip++; 451 } 452 while (mmax > 0 && mskip[mmax - 1] == ' ') 453 --mmax; 454 455 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 456 dev_info_list) { 457 if (devinfo->compatible) { 458 /* 459 * vendor strings must be an exact match 460 */ 461 if (vmax != strnlen(devinfo->vendor, 462 sizeof(devinfo->vendor)) || 463 memcmp(devinfo->vendor, vskip, vmax)) 464 continue; 465 466 /* 467 * @model specifies the full string, and 468 * must be larger or equal to devinfo->model 469 */ 470 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 471 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 472 continue; 473 return devinfo; 474 } else { 475 if (!memcmp(devinfo->vendor, vendor, 476 sizeof(devinfo->vendor)) && 477 !memcmp(devinfo->model, model, 478 sizeof(devinfo->model))) 479 return devinfo; 480 } 481 } 482 483 return ERR_PTR(-ENOENT); 484 } 485 486 /** 487 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 488 * @vendor: vendor string 489 * @model: model (product) string 490 * @key: specify list to use 491 * 492 * Description: 493 * Remove and destroy one dev_info entry for @vendor, @model 494 * in list specified by @key. 495 * 496 * Returns: 0 OK, -error on failure. 497 **/ 498 int scsi_dev_info_list_del_keyed(char *vendor, char *model, 499 enum scsi_devinfo_key key) 500 { 501 struct scsi_dev_info_list *found; 502 503 found = scsi_dev_info_list_find(vendor, model, key); 504 if (IS_ERR(found)) 505 return PTR_ERR(found); 506 507 list_del(&found->dev_info_list); 508 kfree(found); 509 return 0; 510 } 511 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 512 513 /** 514 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 515 * @dev_list: string of device flags to add 516 * 517 * Description: 518 * Parse dev_list, and add entries to the scsi_dev_info_list. 519 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 520 * dev_list is modified via strsep. Can be called for command line 521 * addition, for proc or mabye a sysfs interface. 522 * 523 * Returns: 0 if OK, -error on failure. 524 **/ 525 static int scsi_dev_info_list_add_str(char *dev_list) 526 { 527 char *vendor, *model, *strflags, *next; 528 char *next_check; 529 int res = 0; 530 531 next = dev_list; 532 if (next && next[0] == '"') { 533 /* 534 * Ignore both the leading and trailing quote. 535 */ 536 next++; 537 next_check = ",\""; 538 } else { 539 next_check = ","; 540 } 541 542 /* 543 * For the leading and trailing '"' case, the for loop comes 544 * through the last time with vendor[0] == '\0'. 545 */ 546 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 547 && (res == 0); vendor = strsep(&next, ":")) { 548 strflags = NULL; 549 model = strsep(&next, ":"); 550 if (model) 551 strflags = strsep(&next, next_check); 552 if (!model || !strflags) { 553 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 554 " '%s'\n", __func__, vendor, model, 555 strflags); 556 res = -EINVAL; 557 } else 558 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 559 model, strflags, 0); 560 } 561 return res; 562 } 563 564 /** 565 * scsi_get_device_flags - get device specific flags from the dynamic 566 * device list. 567 * @sdev: &scsi_device to get flags for 568 * @vendor: vendor name 569 * @model: model name 570 * 571 * Description: 572 * Search the global scsi_dev_info_list (specified by list zero) 573 * for an entry matching @vendor and @model, if found, return the 574 * matching flags value, else return the host or global default 575 * settings. Called during scan time. 576 **/ 577 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 578 const unsigned char *vendor, 579 const unsigned char *model) 580 { 581 return scsi_get_device_flags_keyed(sdev, vendor, model, 582 SCSI_DEVINFO_GLOBAL); 583 } 584 585 586 /** 587 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 588 * @sdev: &scsi_device to get flags for 589 * @vendor: vendor name 590 * @model: model name 591 * @key: list to look up 592 * 593 * Description: 594 * Search the scsi_dev_info_list specified by @key for an entry 595 * matching @vendor and @model, if found, return the matching 596 * flags value, else return the host or global default settings. 597 * Called during scan time. 598 **/ 599 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 600 const unsigned char *vendor, 601 const unsigned char *model, 602 enum scsi_devinfo_key key) 603 { 604 struct scsi_dev_info_list *devinfo; 605 606 devinfo = scsi_dev_info_list_find(vendor, model, key); 607 if (!IS_ERR(devinfo)) 608 return devinfo->flags; 609 610 /* key or device not found: return nothing */ 611 if (key != SCSI_DEVINFO_GLOBAL) 612 return 0; 613 614 /* except for the global list, where we have an exception */ 615 if (sdev->sdev_bflags) 616 return sdev->sdev_bflags; 617 618 return scsi_default_dev_flags; 619 } 620 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 621 622 #ifdef CONFIG_SCSI_PROC_FS 623 struct double_list { 624 struct list_head *top; 625 struct list_head *bottom; 626 }; 627 628 static int devinfo_seq_show(struct seq_file *m, void *v) 629 { 630 struct double_list *dl = v; 631 struct scsi_dev_info_list_table *devinfo_table = 632 list_entry(dl->top, struct scsi_dev_info_list_table, node); 633 struct scsi_dev_info_list *devinfo = 634 list_entry(dl->bottom, struct scsi_dev_info_list, 635 dev_info_list); 636 637 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 638 devinfo_table->name) 639 seq_printf(m, "[%s]:\n", devinfo_table->name); 640 641 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 642 devinfo->vendor, devinfo->model, devinfo->flags); 643 return 0; 644 } 645 646 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 647 { 648 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 649 loff_t pos = *ppos; 650 651 if (!dl) 652 return NULL; 653 654 list_for_each(dl->top, &scsi_dev_info_list) { 655 struct scsi_dev_info_list_table *devinfo_table = 656 list_entry(dl->top, struct scsi_dev_info_list_table, 657 node); 658 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 659 if (pos-- == 0) 660 return dl; 661 } 662 663 kfree(dl); 664 return NULL; 665 } 666 667 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 668 { 669 struct double_list *dl = v; 670 struct scsi_dev_info_list_table *devinfo_table = 671 list_entry(dl->top, struct scsi_dev_info_list_table, node); 672 673 ++*ppos; 674 dl->bottom = dl->bottom->next; 675 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 676 dl->top = dl->top->next; 677 if (dl->top == &scsi_dev_info_list) { 678 kfree(dl); 679 return NULL; 680 } 681 devinfo_table = list_entry(dl->top, 682 struct scsi_dev_info_list_table, 683 node); 684 dl->bottom = devinfo_table->scsi_dev_info_list.next; 685 } 686 687 return dl; 688 } 689 690 static void devinfo_seq_stop(struct seq_file *m, void *v) 691 { 692 kfree(v); 693 } 694 695 static const struct seq_operations scsi_devinfo_seq_ops = { 696 .start = devinfo_seq_start, 697 .next = devinfo_seq_next, 698 .stop = devinfo_seq_stop, 699 .show = devinfo_seq_show, 700 }; 701 702 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 703 { 704 return seq_open(file, &scsi_devinfo_seq_ops); 705 } 706 707 /* 708 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 709 * 710 * Description: Adds a black/white list entry for vendor and model with an 711 * integer value of flag to the scsi device info list. 712 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 713 */ 714 static ssize_t proc_scsi_devinfo_write(struct file *file, 715 const char __user *buf, 716 size_t length, loff_t *ppos) 717 { 718 char *buffer; 719 ssize_t err = length; 720 721 if (!buf || length>PAGE_SIZE) 722 return -EINVAL; 723 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 724 return -ENOMEM; 725 if (copy_from_user(buffer, buf, length)) { 726 err =-EFAULT; 727 goto out; 728 } 729 730 if (length < PAGE_SIZE) 731 buffer[length] = '\0'; 732 else if (buffer[PAGE_SIZE-1]) { 733 err = -EINVAL; 734 goto out; 735 } 736 737 scsi_dev_info_list_add_str(buffer); 738 739 out: 740 free_page((unsigned long)buffer); 741 return err; 742 } 743 744 static const struct proc_ops scsi_devinfo_proc_ops = { 745 .proc_open = proc_scsi_devinfo_open, 746 .proc_read = seq_read, 747 .proc_write = proc_scsi_devinfo_write, 748 .proc_lseek = seq_lseek, 749 .proc_release = seq_release, 750 }; 751 #endif /* CONFIG_SCSI_PROC_FS */ 752 753 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 754 MODULE_PARM_DESC(dev_flags, 755 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 756 " list entries for vendor and model with an integer value of flags" 757 " to the scsi device info list"); 758 759 module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 760 MODULE_PARM_DESC(default_dev_flags, 761 "scsi default device flag uint64_t value"); 762 763 /** 764 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 765 **/ 766 void scsi_exit_devinfo(void) 767 { 768 #ifdef CONFIG_SCSI_PROC_FS 769 remove_proc_entry("scsi/device_info", NULL); 770 #endif 771 772 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 773 } 774 775 /** 776 * scsi_dev_info_add_list - add a new devinfo list 777 * @key: key of the list to add 778 * @name: Name of the list to add (for /proc/scsi/device_info) 779 * 780 * Adds the requested list, returns zero on success, -EEXIST if the 781 * key is already registered to a list, or other error on failure. 782 */ 783 int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 784 { 785 struct scsi_dev_info_list_table *devinfo_table = 786 scsi_devinfo_lookup_by_key(key); 787 788 if (!IS_ERR(devinfo_table)) 789 /* list already exists */ 790 return -EEXIST; 791 792 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 793 794 if (!devinfo_table) 795 return -ENOMEM; 796 797 INIT_LIST_HEAD(&devinfo_table->node); 798 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 799 devinfo_table->name = name; 800 devinfo_table->key = key; 801 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 802 803 return 0; 804 } 805 EXPORT_SYMBOL(scsi_dev_info_add_list); 806 807 /** 808 * scsi_dev_info_remove_list - destroy an added devinfo list 809 * @key: key of the list to destroy 810 * 811 * Iterates over the entire list first, freeing all the values, then 812 * frees the list itself. Returns 0 on success or -EINVAL if the key 813 * can't be found. 814 */ 815 int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 816 { 817 struct list_head *lh, *lh_next; 818 struct scsi_dev_info_list_table *devinfo_table = 819 scsi_devinfo_lookup_by_key(key); 820 821 if (IS_ERR(devinfo_table)) 822 /* no such list */ 823 return -EINVAL; 824 825 /* remove from the master list */ 826 list_del(&devinfo_table->node); 827 828 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 829 struct scsi_dev_info_list *devinfo; 830 831 devinfo = list_entry(lh, struct scsi_dev_info_list, 832 dev_info_list); 833 kfree(devinfo); 834 } 835 kfree(devinfo_table); 836 837 return 0; 838 } 839 EXPORT_SYMBOL(scsi_dev_info_remove_list); 840 841 /** 842 * scsi_init_devinfo - set up the dynamic device list. 843 * 844 * Description: 845 * Add command line entries from scsi_dev_flags, then add 846 * scsi_static_device_list entries to the scsi device info list. 847 */ 848 int __init scsi_init_devinfo(void) 849 { 850 #ifdef CONFIG_SCSI_PROC_FS 851 struct proc_dir_entry *p; 852 #endif 853 int error, i; 854 855 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 856 if (error) 857 return error; 858 859 error = scsi_dev_info_list_add_str(scsi_dev_flags); 860 if (error) 861 goto out; 862 863 for (i = 0; scsi_static_device_list[i].vendor; i++) { 864 error = scsi_dev_info_list_add(1 /* compatibile */, 865 scsi_static_device_list[i].vendor, 866 scsi_static_device_list[i].model, 867 NULL, 868 scsi_static_device_list[i].flags); 869 if (error) 870 goto out; 871 } 872 873 #ifdef CONFIG_SCSI_PROC_FS 874 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops); 875 if (!p) { 876 error = -ENOMEM; 877 goto out; 878 } 879 #endif /* CONFIG_SCSI_PROC_FS */ 880 881 out: 882 if (error) 883 scsi_exit_devinfo(); 884 return error; 885 } 886