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 const char spaces[] = " "; /* 16 of them */ 38 static blist_flags_t scsi_default_dev_flags; 39 static LIST_HEAD(scsi_dev_info_list); 40 static char scsi_dev_flags[256]; 41 42 /* 43 * scsi_static_device_list: deprecated list of devices that require 44 * settings that differ from the default, includes black-listed (broken) 45 * devices. The entries here are added to the tail of scsi_dev_info_list 46 * via scsi_dev_info_list_init. 47 * 48 * Do not add to this list, use the command line or proc interface to add 49 * to the scsi_dev_info_list. This table will eventually go away. 50 */ 51 static struct { 52 char *vendor; 53 char *model; 54 char *revision; /* revision known to be bad, unused */ 55 blist_flags_t flags; 56 } scsi_static_device_list[] __initdata = { 57 /* 58 * The following devices are known not to tolerate a lun != 0 scan 59 * for one reason or another. Some will respond to all luns, 60 * others will lock up. 61 */ 62 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ 63 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ 64 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ 65 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ 66 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ 67 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ 68 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */ 69 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */ 70 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ 71 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ 72 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ 73 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ 74 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ 75 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ 76 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ 77 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ 78 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ 79 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ 80 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ 81 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ 82 /* 83 * The following causes a failed REQUEST SENSE on lun 1 for 84 * aha152x controller, which causes SCSI code to reset bus. 85 */ 86 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, 87 /* 88 * The following causes a failed REQUEST SENSE on lun 1 for 89 * aha152x controller, which causes SCSI code to reset bus. 90 */ 91 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, 92 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ 93 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ 94 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, 95 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, 96 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, 97 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, 98 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, 99 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ 100 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ 101 /* 102 * The following causes a failed REQUEST SENSE on lun 1 for 103 * seagate controller, which causes SCSI code to reset bus. 104 */ 105 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, 106 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ 107 /* 108 * The following causes a failed REQUEST SENSE on lun 1 for 109 * seagate controller, which causes SCSI code to reset bus. 110 */ 111 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ 112 {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */ 113 {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */ 114 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ 115 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ 116 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ 117 {"NEC", "D3856", "0009", BLIST_NOLUN}, 118 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ 119 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ 120 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ 121 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ 122 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ 123 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN}, 124 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, 125 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ 126 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ 127 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ 128 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ 129 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ 130 131 /* 132 * Other types of devices that have special flags. 133 * Note that all USB devices should have the BLIST_INQUIRY_36 flag. 134 */ 135 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, 136 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, 137 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, 138 {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES}, 139 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 140 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 141 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, 142 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 143 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 144 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 145 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 146 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 147 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 148 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 149 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 150 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 151 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 152 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 153 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 154 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 155 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 156 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 157 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 158 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 159 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 160 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 161 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 162 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ 163 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ 164 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 165 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_REPORTLUN2}, 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 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 172 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 173 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | 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 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 180 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 181 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 182 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 183 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 184 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 185 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 186 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 187 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 188 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 189 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 190 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 191 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 192 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 193 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 194 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 195 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 196 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 197 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 198 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 199 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 200 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 201 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 202 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 203 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 204 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 205 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 206 {"INSITE", "I325VM", NULL, BLIST_KEY}, 207 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 208 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 209 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 210 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 211 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 212 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 213 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 214 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 215 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 216 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 217 {"MICROP", "4110", NULL, BLIST_NOTQ}, 218 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC}, 219 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 220 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 221 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 223 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 224 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 225 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 226 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 227 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 228 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 229 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 230 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 231 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 232 {"Promise", "", NULL, BLIST_SPARSELUN}, 233 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 234 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 235 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 236 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 237 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 238 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 239 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 240 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 241 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 242 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 243 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 244 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 245 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 246 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 247 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 248 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 249 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 250 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 251 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 252 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 253 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 254 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 255 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 256 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 257 {"SUN", "T300", "*", BLIST_SPARSELUN}, 258 {"SUN", "T4", "*", BLIST_SPARSELUN}, 259 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 260 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 261 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 262 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 263 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 264 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 265 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 266 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 267 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 268 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 269 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 270 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 271 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 272 { NULL, NULL, NULL, 0 }, 273 }; 274 275 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 276 { 277 struct scsi_dev_info_list_table *devinfo_table; 278 int found = 0; 279 280 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 281 if (devinfo_table->key == key) { 282 found = 1; 283 break; 284 } 285 if (!found) 286 return ERR_PTR(-EINVAL); 287 288 return devinfo_table; 289 } 290 291 /* 292 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 293 * devinfo vendor and model strings. 294 */ 295 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 296 char *from, int compatible) 297 { 298 size_t from_length; 299 300 from_length = strlen(from); 301 strncpy(to, from, min(to_length, from_length)); 302 if (from_length < to_length) { 303 if (compatible) { 304 /* 305 * NUL terminate the string if it is short. 306 */ 307 to[from_length] = '\0'; 308 } else { 309 /* 310 * space pad the string if it is short. 311 */ 312 strncpy(&to[from_length], spaces, 313 to_length - from_length); 314 } 315 } 316 if (from_length > to_length) 317 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 318 __func__, name, from); 319 } 320 321 /** 322 * scsi_dev_info_list_add - add one dev_info list entry. 323 * @compatible: if true, null terminate short strings. Otherwise space pad. 324 * @vendor: vendor string 325 * @model: model (product) string 326 * @strflags: integer string 327 * @flags: if strflags NULL, use this flag value 328 * 329 * Description: 330 * Create and add one dev_info entry for @vendor, @model, @strflags or 331 * @flag. If @compatible, add to the tail of the list, do not space 332 * pad, and set devinfo->compatible. The scsi_static_device_list entries 333 * are added with @compatible 1 and @clfags NULL. 334 * 335 * Returns: 0 OK, -error on failure. 336 **/ 337 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 338 char *strflags, blist_flags_t flags) 339 { 340 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 341 strflags, flags, 342 SCSI_DEVINFO_GLOBAL); 343 } 344 345 /** 346 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 347 * @compatible: if true, null terminate short strings. Otherwise space pad. 348 * @vendor: vendor string 349 * @model: model (product) string 350 * @strflags: integer string 351 * @flags: if strflags NULL, use this flag value 352 * @key: specify list to use 353 * 354 * Description: 355 * Create and add one dev_info entry for @vendor, @model, 356 * @strflags or @flag in list specified by @key. If @compatible, 357 * add to the tail of the list, do not space pad, and set 358 * devinfo->compatible. The scsi_static_device_list entries are 359 * added with @compatible 1 and @clfags NULL. 360 * 361 * Returns: 0 OK, -error on failure. 362 **/ 363 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 364 char *strflags, blist_flags_t flags, int key) 365 { 366 struct scsi_dev_info_list *devinfo; 367 struct scsi_dev_info_list_table *devinfo_table = 368 scsi_devinfo_lookup_by_key(key); 369 370 if (IS_ERR(devinfo_table)) 371 return PTR_ERR(devinfo_table); 372 373 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 374 if (!devinfo) { 375 printk(KERN_ERR "%s: no memory\n", __func__); 376 return -ENOMEM; 377 } 378 379 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 380 vendor, compatible); 381 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 382 model, compatible); 383 384 if (strflags) 385 devinfo->flags = simple_strtoul(strflags, NULL, 0); 386 else 387 devinfo->flags = flags; 388 389 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, int 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 != strlen(devinfo->vendor) || 462 memcmp(devinfo->vendor, vskip, vmax)) 463 continue; 464 465 /* 466 * @model specifies the full string, and 467 * must be larger or equal to devinfo->model 468 */ 469 mlen = strlen(devinfo->model); 470 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 471 continue; 472 return devinfo; 473 } else { 474 if (!memcmp(devinfo->vendor, vendor, 475 sizeof(devinfo->vendor)) && 476 !memcmp(devinfo->model, model, 477 sizeof(devinfo->model))) 478 return devinfo; 479 } 480 } 481 482 return ERR_PTR(-ENOENT); 483 } 484 485 /** 486 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 487 * @vendor: vendor string 488 * @model: model (product) string 489 * @key: specify list to use 490 * 491 * Description: 492 * Remove and destroy one dev_info entry for @vendor, @model 493 * in list specified by @key. 494 * 495 * Returns: 0 OK, -error on failure. 496 **/ 497 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 498 { 499 struct scsi_dev_info_list *found; 500 501 found = scsi_dev_info_list_find(vendor, model, key); 502 if (IS_ERR(found)) 503 return PTR_ERR(found); 504 505 list_del(&found->dev_info_list); 506 kfree(found); 507 return 0; 508 } 509 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 510 511 /** 512 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 513 * @dev_list: string of device flags to add 514 * 515 * Description: 516 * Parse dev_list, and add entries to the scsi_dev_info_list. 517 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 518 * dev_list is modified via strsep. Can be called for command line 519 * addition, for proc or mabye a sysfs interface. 520 * 521 * Returns: 0 if OK, -error on failure. 522 **/ 523 static int scsi_dev_info_list_add_str(char *dev_list) 524 { 525 char *vendor, *model, *strflags, *next; 526 char *next_check; 527 int res = 0; 528 529 next = dev_list; 530 if (next && next[0] == '"') { 531 /* 532 * Ignore both the leading and trailing quote. 533 */ 534 next++; 535 next_check = ",\""; 536 } else { 537 next_check = ","; 538 } 539 540 /* 541 * For the leading and trailing '"' case, the for loop comes 542 * through the last time with vendor[0] == '\0'. 543 */ 544 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 545 && (res == 0); vendor = strsep(&next, ":")) { 546 strflags = NULL; 547 model = strsep(&next, ":"); 548 if (model) 549 strflags = strsep(&next, next_check); 550 if (!model || !strflags) { 551 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 552 " '%s'\n", __func__, vendor, model, 553 strflags); 554 res = -EINVAL; 555 } else 556 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 557 model, strflags, 0); 558 } 559 return res; 560 } 561 562 /** 563 * get_device_flags - get device specific flags from the dynamic device list. 564 * @sdev: &scsi_device to get flags for 565 * @vendor: vendor name 566 * @model: model name 567 * 568 * Description: 569 * Search the global scsi_dev_info_list (specified by list zero) 570 * for an entry matching @vendor and @model, if found, return the 571 * matching flags value, else return the host or global default 572 * settings. Called during scan time. 573 **/ 574 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 575 const unsigned char *vendor, 576 const unsigned char *model) 577 { 578 return scsi_get_device_flags_keyed(sdev, vendor, model, 579 SCSI_DEVINFO_GLOBAL); 580 } 581 582 583 /** 584 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 585 * @sdev: &scsi_device to get flags for 586 * @vendor: vendor name 587 * @model: model name 588 * @key: list to look up 589 * 590 * Description: 591 * Search the scsi_dev_info_list specified by @key for an entry 592 * matching @vendor and @model, if found, return the matching 593 * flags value, else return the host or global default settings. 594 * Called during scan time. 595 **/ 596 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 597 const unsigned char *vendor, 598 const unsigned char *model, 599 int key) 600 { 601 struct scsi_dev_info_list *devinfo; 602 int err; 603 604 devinfo = scsi_dev_info_list_find(vendor, model, key); 605 if (!IS_ERR(devinfo)) 606 return devinfo->flags; 607 608 err = PTR_ERR(devinfo); 609 if (err != -ENOENT) 610 return err; 611 612 /* nothing found, return nothing */ 613 if (key != SCSI_DEVINFO_GLOBAL) 614 return 0; 615 616 /* except for the global list, where we have an exception */ 617 if (sdev->sdev_bflags) 618 return sdev->sdev_bflags; 619 620 return scsi_default_dev_flags; 621 } 622 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 623 624 #ifdef CONFIG_SCSI_PROC_FS 625 struct double_list { 626 struct list_head *top; 627 struct list_head *bottom; 628 }; 629 630 static int devinfo_seq_show(struct seq_file *m, void *v) 631 { 632 struct double_list *dl = v; 633 struct scsi_dev_info_list_table *devinfo_table = 634 list_entry(dl->top, struct scsi_dev_info_list_table, node); 635 struct scsi_dev_info_list *devinfo = 636 list_entry(dl->bottom, struct scsi_dev_info_list, 637 dev_info_list); 638 639 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 640 devinfo_table->name) 641 seq_printf(m, "[%s]:\n", devinfo_table->name); 642 643 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 644 devinfo->vendor, devinfo->model, devinfo->flags); 645 return 0; 646 } 647 648 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 649 { 650 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 651 loff_t pos = *ppos; 652 653 if (!dl) 654 return NULL; 655 656 list_for_each(dl->top, &scsi_dev_info_list) { 657 struct scsi_dev_info_list_table *devinfo_table = 658 list_entry(dl->top, struct scsi_dev_info_list_table, 659 node); 660 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 661 if (pos-- == 0) 662 return dl; 663 } 664 665 kfree(dl); 666 return NULL; 667 } 668 669 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 670 { 671 struct double_list *dl = v; 672 struct scsi_dev_info_list_table *devinfo_table = 673 list_entry(dl->top, struct scsi_dev_info_list_table, node); 674 675 ++*ppos; 676 dl->bottom = dl->bottom->next; 677 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 678 dl->top = dl->top->next; 679 if (dl->top == &scsi_dev_info_list) { 680 kfree(dl); 681 return NULL; 682 } 683 devinfo_table = list_entry(dl->top, 684 struct scsi_dev_info_list_table, 685 node); 686 dl->bottom = devinfo_table->scsi_dev_info_list.next; 687 } 688 689 return dl; 690 } 691 692 static void devinfo_seq_stop(struct seq_file *m, void *v) 693 { 694 kfree(v); 695 } 696 697 static const struct seq_operations scsi_devinfo_seq_ops = { 698 .start = devinfo_seq_start, 699 .next = devinfo_seq_next, 700 .stop = devinfo_seq_stop, 701 .show = devinfo_seq_show, 702 }; 703 704 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 705 { 706 return seq_open(file, &scsi_devinfo_seq_ops); 707 } 708 709 /* 710 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 711 * 712 * Description: Adds a black/white list entry for vendor and model with an 713 * integer value of flag to the scsi device info list. 714 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 715 */ 716 static ssize_t proc_scsi_devinfo_write(struct file *file, 717 const char __user *buf, 718 size_t length, loff_t *ppos) 719 { 720 char *buffer; 721 ssize_t err = length; 722 723 if (!buf || length>PAGE_SIZE) 724 return -EINVAL; 725 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 726 return -ENOMEM; 727 if (copy_from_user(buffer, buf, length)) { 728 err =-EFAULT; 729 goto out; 730 } 731 732 if (length < PAGE_SIZE) 733 buffer[length] = '\0'; 734 else if (buffer[PAGE_SIZE-1]) { 735 err = -EINVAL; 736 goto out; 737 } 738 739 scsi_dev_info_list_add_str(buffer); 740 741 out: 742 free_page((unsigned long)buffer); 743 return err; 744 } 745 746 static const struct file_operations scsi_devinfo_proc_fops = { 747 .owner = THIS_MODULE, 748 .open = proc_scsi_devinfo_open, 749 .read = seq_read, 750 .write = proc_scsi_devinfo_write, 751 .llseek = seq_lseek, 752 .release = seq_release, 753 }; 754 #endif /* CONFIG_SCSI_PROC_FS */ 755 756 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 757 MODULE_PARM_DESC(dev_flags, 758 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 759 " list entries for vendor and model with an integer value of flags" 760 " to the scsi device info list"); 761 762 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 763 MODULE_PARM_DESC(default_dev_flags, 764 "scsi default device flag integer value"); 765 766 /** 767 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 768 **/ 769 void scsi_exit_devinfo(void) 770 { 771 #ifdef CONFIG_SCSI_PROC_FS 772 remove_proc_entry("scsi/device_info", NULL); 773 #endif 774 775 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 776 } 777 778 /** 779 * scsi_dev_info_add_list - add a new devinfo list 780 * @key: key of the list to add 781 * @name: Name of the list to add (for /proc/scsi/device_info) 782 * 783 * Adds the requested list, returns zero on success, -EEXIST if the 784 * key is already registered to a list, or other error on failure. 785 */ 786 int scsi_dev_info_add_list(int key, const char *name) 787 { 788 struct scsi_dev_info_list_table *devinfo_table = 789 scsi_devinfo_lookup_by_key(key); 790 791 if (!IS_ERR(devinfo_table)) 792 /* list already exists */ 793 return -EEXIST; 794 795 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 796 797 if (!devinfo_table) 798 return -ENOMEM; 799 800 INIT_LIST_HEAD(&devinfo_table->node); 801 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 802 devinfo_table->name = name; 803 devinfo_table->key = key; 804 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 805 806 return 0; 807 } 808 EXPORT_SYMBOL(scsi_dev_info_add_list); 809 810 /** 811 * scsi_dev_info_remove_list - destroy an added devinfo list 812 * @key: key of the list to destroy 813 * 814 * Iterates over the entire list first, freeing all the values, then 815 * frees the list itself. Returns 0 on success or -EINVAL if the key 816 * can't be found. 817 */ 818 int scsi_dev_info_remove_list(int key) 819 { 820 struct list_head *lh, *lh_next; 821 struct scsi_dev_info_list_table *devinfo_table = 822 scsi_devinfo_lookup_by_key(key); 823 824 if (IS_ERR(devinfo_table)) 825 /* no such list */ 826 return -EINVAL; 827 828 /* remove from the master list */ 829 list_del(&devinfo_table->node); 830 831 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 832 struct scsi_dev_info_list *devinfo; 833 834 devinfo = list_entry(lh, struct scsi_dev_info_list, 835 dev_info_list); 836 kfree(devinfo); 837 } 838 kfree(devinfo_table); 839 840 return 0; 841 } 842 EXPORT_SYMBOL(scsi_dev_info_remove_list); 843 844 /** 845 * scsi_init_devinfo - set up the dynamic device list. 846 * 847 * Description: 848 * Add command line entries from scsi_dev_flags, then add 849 * scsi_static_device_list entries to the scsi device info list. 850 */ 851 int __init scsi_init_devinfo(void) 852 { 853 #ifdef CONFIG_SCSI_PROC_FS 854 struct proc_dir_entry *p; 855 #endif 856 int error, i; 857 858 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 859 if (error) 860 return error; 861 862 error = scsi_dev_info_list_add_str(scsi_dev_flags); 863 if (error) 864 goto out; 865 866 for (i = 0; scsi_static_device_list[i].vendor; i++) { 867 error = scsi_dev_info_list_add(1 /* compatibile */, 868 scsi_static_device_list[i].vendor, 869 scsi_static_device_list[i].model, 870 NULL, 871 scsi_static_device_list[i].flags); 872 if (error) 873 goto out; 874 } 875 876 #ifdef CONFIG_SCSI_PROC_FS 877 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 878 if (!p) { 879 error = -ENOMEM; 880 goto out; 881 } 882 #endif /* CONFIG_SCSI_PROC_FS */ 883 884 out: 885 if (error) 886 scsi_exit_devinfo(); 887 return error; 888 } 889