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 unsigned 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 unsigned 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 unsigned 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 {"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}, /* Dell PV 650F, storage on LUN 0 */ 162 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ 163 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 164 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, 165 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 166 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 167 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 168 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 169 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 170 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 171 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 172 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 173 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 174 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 175 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, 177 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, 178 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 179 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 180 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 181 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 182 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 183 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 184 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 185 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 186 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 187 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 188 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 189 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 190 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 192 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 193 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 194 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 195 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 196 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 197 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 198 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 199 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 200 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 201 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 202 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 203 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 204 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 205 {"INSITE", "I325VM", NULL, BLIST_KEY}, 206 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 207 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 208 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 209 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 210 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 211 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 212 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 213 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 214 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 215 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 216 {"MICROP", "4110", NULL, BLIST_NOTQ}, 217 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC}, 218 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 219 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 220 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 223 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 224 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 225 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 226 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 227 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 228 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 229 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 230 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 231 {"Promise", "", NULL, BLIST_SPARSELUN}, 232 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 233 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 234 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 235 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 236 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 237 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 238 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 239 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 240 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 241 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 242 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 243 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 244 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 245 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 246 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 247 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 248 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 249 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 250 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 251 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 252 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 253 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 254 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 255 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 256 {"SUN", "T300", "*", BLIST_SPARSELUN}, 257 {"SUN", "T4", "*", BLIST_SPARSELUN}, 258 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 259 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 260 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 261 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 262 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 263 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 264 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 265 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 266 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 267 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 268 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 269 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 270 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 271 { NULL, NULL, NULL, 0 }, 272 }; 273 274 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 275 { 276 struct scsi_dev_info_list_table *devinfo_table; 277 int found = 0; 278 279 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 280 if (devinfo_table->key == key) { 281 found = 1; 282 break; 283 } 284 if (!found) 285 return ERR_PTR(-EINVAL); 286 287 return devinfo_table; 288 } 289 290 /* 291 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 292 * devinfo vendor and model strings. 293 */ 294 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 295 char *from, int compatible) 296 { 297 size_t from_length; 298 299 from_length = strlen(from); 300 strncpy(to, from, min(to_length, from_length)); 301 if (from_length < to_length) { 302 if (compatible) { 303 /* 304 * NUL terminate the string if it is short. 305 */ 306 to[from_length] = '\0'; 307 } else { 308 /* 309 * space pad the string if it is short. 310 */ 311 strncpy(&to[from_length], spaces, 312 to_length - from_length); 313 } 314 } 315 if (from_length > to_length) 316 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 317 __func__, name, from); 318 } 319 320 /** 321 * scsi_dev_info_list_add - add one dev_info list entry. 322 * @compatible: if true, null terminate short strings. Otherwise space pad. 323 * @vendor: vendor string 324 * @model: model (product) string 325 * @strflags: integer string 326 * @flags: if strflags NULL, use this flag value 327 * 328 * Description: 329 * Create and add one dev_info entry for @vendor, @model, @strflags or 330 * @flag. If @compatible, add to the tail of the list, do not space 331 * pad, and set devinfo->compatible. The scsi_static_device_list entries 332 * are added with @compatible 1 and @clfags NULL. 333 * 334 * Returns: 0 OK, -error on failure. 335 **/ 336 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 337 char *strflags, int flags) 338 { 339 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 340 strflags, flags, 341 SCSI_DEVINFO_GLOBAL); 342 } 343 344 /** 345 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 346 * @compatible: if true, null terminate short strings. Otherwise space pad. 347 * @vendor: vendor string 348 * @model: model (product) string 349 * @strflags: integer string 350 * @flags: if strflags NULL, use this flag value 351 * @key: specify list to use 352 * 353 * Description: 354 * Create and add one dev_info entry for @vendor, @model, 355 * @strflags or @flag in list specified by @key. If @compatible, 356 * add to the tail of the list, do not space pad, and set 357 * devinfo->compatible. The scsi_static_device_list entries are 358 * added with @compatible 1 and @clfags NULL. 359 * 360 * Returns: 0 OK, -error on failure. 361 **/ 362 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 363 char *strflags, int flags, int key) 364 { 365 struct scsi_dev_info_list *devinfo; 366 struct scsi_dev_info_list_table *devinfo_table = 367 scsi_devinfo_lookup_by_key(key); 368 369 if (IS_ERR(devinfo_table)) 370 return PTR_ERR(devinfo_table); 371 372 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 373 if (!devinfo) { 374 printk(KERN_ERR "%s: no memory\n", __func__); 375 return -ENOMEM; 376 } 377 378 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 379 vendor, compatible); 380 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 381 model, compatible); 382 383 if (strflags) 384 devinfo->flags = simple_strtoul(strflags, NULL, 0); 385 else 386 devinfo->flags = flags; 387 388 devinfo->compatible = compatible; 389 390 if (compatible) 391 list_add_tail(&devinfo->dev_info_list, 392 &devinfo_table->scsi_dev_info_list); 393 else 394 list_add(&devinfo->dev_info_list, 395 &devinfo_table->scsi_dev_info_list); 396 397 return 0; 398 } 399 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 400 401 /** 402 * scsi_dev_info_list_find - find a matching dev_info list entry. 403 * @vendor: vendor string 404 * @model: model (product) string 405 * @key: specify list to use 406 * 407 * Description: 408 * Finds the first dev_info entry matching @vendor, @model 409 * in list specified by @key. 410 * 411 * Returns: pointer to matching entry, or ERR_PTR on failure. 412 **/ 413 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 414 const char *model, int key) 415 { 416 struct scsi_dev_info_list *devinfo; 417 struct scsi_dev_info_list_table *devinfo_table = 418 scsi_devinfo_lookup_by_key(key); 419 size_t vmax, mmax; 420 const char *vskip, *mskip; 421 422 if (IS_ERR(devinfo_table)) 423 return (struct scsi_dev_info_list *) devinfo_table; 424 425 /* Prepare for "compatible" matches */ 426 427 /* 428 * XXX why skip leading spaces? If an odd INQUIRY 429 * value, that should have been part of the 430 * scsi_static_device_list[] entry, such as " FOO" 431 * rather than "FOO". Since this code is already 432 * here, and we don't know what device it is 433 * trying to work with, leave it as-is. 434 */ 435 vmax = sizeof(devinfo->vendor); 436 vskip = vendor; 437 while (vmax > 0 && *vskip == ' ') { 438 vmax--; 439 vskip++; 440 } 441 /* Also skip trailing spaces */ 442 while (vmax > 0 && vskip[vmax - 1] == ' ') 443 --vmax; 444 445 mmax = sizeof(devinfo->model); 446 mskip = model; 447 while (mmax > 0 && *mskip == ' ') { 448 mmax--; 449 mskip++; 450 } 451 while (mmax > 0 && mskip[mmax - 1] == ' ') 452 --mmax; 453 454 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 455 dev_info_list) { 456 if (devinfo->compatible) { 457 /* 458 * Behave like the older version of get_device_flags. 459 */ 460 if (memcmp(devinfo->vendor, vskip, vmax) || 461 (vmax < sizeof(devinfo->vendor) && 462 devinfo->vendor[vmax])) 463 continue; 464 if (memcmp(devinfo->model, mskip, mmax) || 465 (mmax < sizeof(devinfo->model) && 466 devinfo->model[mmax])) 467 continue; 468 return devinfo; 469 } else { 470 if (!memcmp(devinfo->vendor, vendor, 471 sizeof(devinfo->vendor)) && 472 !memcmp(devinfo->model, model, 473 sizeof(devinfo->model))) 474 return devinfo; 475 } 476 } 477 478 return ERR_PTR(-ENOENT); 479 } 480 481 /** 482 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 483 * @vendor: vendor string 484 * @model: model (product) string 485 * @key: specify list to use 486 * 487 * Description: 488 * Remove and destroy one dev_info entry for @vendor, @model 489 * in list specified by @key. 490 * 491 * Returns: 0 OK, -error on failure. 492 **/ 493 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 494 { 495 struct scsi_dev_info_list *found; 496 497 found = scsi_dev_info_list_find(vendor, model, key); 498 if (IS_ERR(found)) 499 return PTR_ERR(found); 500 501 list_del(&found->dev_info_list); 502 kfree(found); 503 return 0; 504 } 505 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 506 507 /** 508 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 509 * @dev_list: string of device flags to add 510 * 511 * Description: 512 * Parse dev_list, and add entries to the scsi_dev_info_list. 513 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 514 * dev_list is modified via strsep. Can be called for command line 515 * addition, for proc or mabye a sysfs interface. 516 * 517 * Returns: 0 if OK, -error on failure. 518 **/ 519 static int scsi_dev_info_list_add_str(char *dev_list) 520 { 521 char *vendor, *model, *strflags, *next; 522 char *next_check; 523 int res = 0; 524 525 next = dev_list; 526 if (next && next[0] == '"') { 527 /* 528 * Ignore both the leading and trailing quote. 529 */ 530 next++; 531 next_check = ",\""; 532 } else { 533 next_check = ","; 534 } 535 536 /* 537 * For the leading and trailing '"' case, the for loop comes 538 * through the last time with vendor[0] == '\0'. 539 */ 540 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 541 && (res == 0); vendor = strsep(&next, ":")) { 542 strflags = NULL; 543 model = strsep(&next, ":"); 544 if (model) 545 strflags = strsep(&next, next_check); 546 if (!model || !strflags) { 547 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 548 " '%s'\n", __func__, vendor, model, 549 strflags); 550 res = -EINVAL; 551 } else 552 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 553 model, strflags, 0); 554 } 555 return res; 556 } 557 558 /** 559 * get_device_flags - get device specific flags from the dynamic device list. 560 * @sdev: &scsi_device to get flags for 561 * @vendor: vendor name 562 * @model: model name 563 * 564 * Description: 565 * Search the global scsi_dev_info_list (specified by list zero) 566 * for an entry matching @vendor and @model, if found, return the 567 * matching flags value, else return the host or global default 568 * settings. Called during scan time. 569 **/ 570 int scsi_get_device_flags(struct scsi_device *sdev, 571 const unsigned char *vendor, 572 const unsigned char *model) 573 { 574 return scsi_get_device_flags_keyed(sdev, vendor, model, 575 SCSI_DEVINFO_GLOBAL); 576 } 577 578 579 /** 580 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 581 * @sdev: &scsi_device to get flags for 582 * @vendor: vendor name 583 * @model: model name 584 * @key: list to look up 585 * 586 * Description: 587 * Search the scsi_dev_info_list specified by @key for an entry 588 * matching @vendor and @model, if found, return the matching 589 * flags value, else return the host or global default settings. 590 * Called during scan time. 591 **/ 592 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 593 const unsigned char *vendor, 594 const unsigned char *model, 595 int key) 596 { 597 struct scsi_dev_info_list *devinfo; 598 int err; 599 600 devinfo = scsi_dev_info_list_find(vendor, model, key); 601 if (!IS_ERR(devinfo)) 602 return devinfo->flags; 603 604 err = PTR_ERR(devinfo); 605 if (err != -ENOENT) 606 return err; 607 608 /* nothing found, return nothing */ 609 if (key != SCSI_DEVINFO_GLOBAL) 610 return 0; 611 612 /* except for the global list, where we have an exception */ 613 if (sdev->sdev_bflags) 614 return sdev->sdev_bflags; 615 616 return scsi_default_dev_flags; 617 } 618 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 619 620 #ifdef CONFIG_SCSI_PROC_FS 621 struct double_list { 622 struct list_head *top; 623 struct list_head *bottom; 624 }; 625 626 static int devinfo_seq_show(struct seq_file *m, void *v) 627 { 628 struct double_list *dl = v; 629 struct scsi_dev_info_list_table *devinfo_table = 630 list_entry(dl->top, struct scsi_dev_info_list_table, node); 631 struct scsi_dev_info_list *devinfo = 632 list_entry(dl->bottom, struct scsi_dev_info_list, 633 dev_info_list); 634 635 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 636 devinfo_table->name) 637 seq_printf(m, "[%s]:\n", devinfo_table->name); 638 639 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 640 devinfo->vendor, devinfo->model, devinfo->flags); 641 return 0; 642 } 643 644 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 645 { 646 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 647 loff_t pos = *ppos; 648 649 if (!dl) 650 return NULL; 651 652 list_for_each(dl->top, &scsi_dev_info_list) { 653 struct scsi_dev_info_list_table *devinfo_table = 654 list_entry(dl->top, struct scsi_dev_info_list_table, 655 node); 656 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 657 if (pos-- == 0) 658 return dl; 659 } 660 661 kfree(dl); 662 return NULL; 663 } 664 665 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 666 { 667 struct double_list *dl = v; 668 struct scsi_dev_info_list_table *devinfo_table = 669 list_entry(dl->top, struct scsi_dev_info_list_table, node); 670 671 ++*ppos; 672 dl->bottom = dl->bottom->next; 673 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 674 dl->top = dl->top->next; 675 if (dl->top == &scsi_dev_info_list) { 676 kfree(dl); 677 return NULL; 678 } 679 devinfo_table = list_entry(dl->top, 680 struct scsi_dev_info_list_table, 681 node); 682 dl->bottom = devinfo_table->scsi_dev_info_list.next; 683 } 684 685 return dl; 686 } 687 688 static void devinfo_seq_stop(struct seq_file *m, void *v) 689 { 690 kfree(v); 691 } 692 693 static const struct seq_operations scsi_devinfo_seq_ops = { 694 .start = devinfo_seq_start, 695 .next = devinfo_seq_next, 696 .stop = devinfo_seq_stop, 697 .show = devinfo_seq_show, 698 }; 699 700 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 701 { 702 return seq_open(file, &scsi_devinfo_seq_ops); 703 } 704 705 /* 706 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 707 * 708 * Description: Adds a black/white list entry for vendor and model with an 709 * integer value of flag to the scsi device info list. 710 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 711 */ 712 static ssize_t proc_scsi_devinfo_write(struct file *file, 713 const char __user *buf, 714 size_t length, loff_t *ppos) 715 { 716 char *buffer; 717 ssize_t err = length; 718 719 if (!buf || length>PAGE_SIZE) 720 return -EINVAL; 721 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 722 return -ENOMEM; 723 if (copy_from_user(buffer, buf, length)) { 724 err =-EFAULT; 725 goto out; 726 } 727 728 if (length < PAGE_SIZE) 729 buffer[length] = '\0'; 730 else if (buffer[PAGE_SIZE-1]) { 731 err = -EINVAL; 732 goto out; 733 } 734 735 scsi_dev_info_list_add_str(buffer); 736 737 out: 738 free_page((unsigned long)buffer); 739 return err; 740 } 741 742 static const struct file_operations scsi_devinfo_proc_fops = { 743 .owner = THIS_MODULE, 744 .open = proc_scsi_devinfo_open, 745 .read = seq_read, 746 .write = proc_scsi_devinfo_write, 747 .llseek = seq_lseek, 748 .release = seq_release, 749 }; 750 #endif /* CONFIG_SCSI_PROC_FS */ 751 752 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 753 MODULE_PARM_DESC(dev_flags, 754 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 755 " list entries for vendor and model with an integer value of flags" 756 " to the scsi device info list"); 757 758 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 759 MODULE_PARM_DESC(default_dev_flags, 760 "scsi default device flag integer value"); 761 762 /** 763 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 764 **/ 765 void scsi_exit_devinfo(void) 766 { 767 #ifdef CONFIG_SCSI_PROC_FS 768 remove_proc_entry("scsi/device_info", NULL); 769 #endif 770 771 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 772 } 773 774 /** 775 * scsi_dev_info_add_list - add a new devinfo list 776 * @key: key of the list to add 777 * @name: Name of the list to add (for /proc/scsi/device_info) 778 * 779 * Adds the requested list, returns zero on success, -EEXIST if the 780 * key is already registered to a list, or other error on failure. 781 */ 782 int scsi_dev_info_add_list(int key, const char *name) 783 { 784 struct scsi_dev_info_list_table *devinfo_table = 785 scsi_devinfo_lookup_by_key(key); 786 787 if (!IS_ERR(devinfo_table)) 788 /* list already exists */ 789 return -EEXIST; 790 791 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 792 793 if (!devinfo_table) 794 return -ENOMEM; 795 796 INIT_LIST_HEAD(&devinfo_table->node); 797 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 798 devinfo_table->name = name; 799 devinfo_table->key = key; 800 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 801 802 return 0; 803 } 804 EXPORT_SYMBOL(scsi_dev_info_add_list); 805 806 /** 807 * scsi_dev_info_remove_list - destroy an added devinfo list 808 * @key: key of the list to destroy 809 * 810 * Iterates over the entire list first, freeing all the values, then 811 * frees the list itself. Returns 0 on success or -EINVAL if the key 812 * can't be found. 813 */ 814 int scsi_dev_info_remove_list(int key) 815 { 816 struct list_head *lh, *lh_next; 817 struct scsi_dev_info_list_table *devinfo_table = 818 scsi_devinfo_lookup_by_key(key); 819 820 if (IS_ERR(devinfo_table)) 821 /* no such list */ 822 return -EINVAL; 823 824 /* remove from the master list */ 825 list_del(&devinfo_table->node); 826 827 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 828 struct scsi_dev_info_list *devinfo; 829 830 devinfo = list_entry(lh, struct scsi_dev_info_list, 831 dev_info_list); 832 kfree(devinfo); 833 } 834 kfree(devinfo_table); 835 836 return 0; 837 } 838 EXPORT_SYMBOL(scsi_dev_info_remove_list); 839 840 /** 841 * scsi_init_devinfo - set up the dynamic device list. 842 * 843 * Description: 844 * Add command line entries from scsi_dev_flags, then add 845 * scsi_static_device_list entries to the scsi device info list. 846 */ 847 int __init scsi_init_devinfo(void) 848 { 849 #ifdef CONFIG_SCSI_PROC_FS 850 struct proc_dir_entry *p; 851 #endif 852 int error, i; 853 854 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 855 if (error) 856 return error; 857 858 error = scsi_dev_info_list_add_str(scsi_dev_flags); 859 if (error) 860 goto out; 861 862 for (i = 0; scsi_static_device_list[i].vendor; i++) { 863 error = scsi_dev_info_list_add(1 /* compatibile */, 864 scsi_static_device_list[i].vendor, 865 scsi_static_device_list[i].model, 866 NULL, 867 scsi_static_device_list[i].flags); 868 if (error) 869 goto out; 870 } 871 872 #ifdef CONFIG_SCSI_PROC_FS 873 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 874 if (!p) { 875 error = -ENOMEM; 876 goto out; 877 } 878 #endif /* CONFIG_SCSI_PROC_FS */ 879 880 out: 881 if (error) 882 scsi_exit_devinfo(); 883 return error; 884 } 885