1 2#include <linux/blkdev.h> 3#include <linux/init.h> 4#include <linux/kernel.h> 5#include <linux/module.h> 6#include <linux/moduleparam.h> 7#include <linux/proc_fs.h> 8#include <linux/seq_file.h> 9#include <linux/slab.h> 10 11#include <scsi/scsi_device.h> 12#include <scsi/scsi_devinfo.h> 13 14#include "scsi_priv.h" 15 16 17/* 18 * scsi_dev_info_list: structure to hold black/white listed devices. 19 */ 20struct scsi_dev_info_list { 21 struct list_head dev_info_list; 22 char vendor[8]; 23 char model[16]; 24 unsigned flags; 25 unsigned compatible; /* for use with scsi_static_device_list entries */ 26}; 27 28struct scsi_dev_info_list_table { 29 struct list_head node; /* our node for being on the master list */ 30 struct list_head scsi_dev_info_list; /* head of dev info list */ 31 const char *name; /* name of list for /proc (NULL for global) */ 32 int key; /* unique numeric identifier */ 33}; 34 35 36static const char spaces[] = " "; /* 16 of them */ 37static unsigned scsi_default_dev_flags; 38static LIST_HEAD(scsi_dev_info_list); 39static 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 */ 50static struct { 51 char *vendor; 52 char *model; 53 char *revision; /* revision known to be bad, unused */ 54 unsigned 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", "", BLIST_NOLUN}, /* scanjet iip */ 112 {"HP", "C2500A", "", 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}, 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 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 138 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 139 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, 140 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 141 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 142 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 143 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 144 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 145 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 146 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 147 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 148 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 149 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 150 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 151 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 152 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 153 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 154 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 155 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 156 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 157 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 158 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 159 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 160 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ 161 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ 162 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 163 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, 164 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 165 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 166 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 167 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 168 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 169 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 170 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, 171 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, 172 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 173 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 174 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 175 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 177 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 178 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 179 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 180 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 181 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 182 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 183 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 184 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 185 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 186 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 187 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 188 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 189 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 190 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 192 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 193 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 194 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 195 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 196 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 197 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 198 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 199 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 200 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 201 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 202 {"INSITE", "I325VM", NULL, BLIST_KEY}, 203 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 204 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 205 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 206 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 207 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 208 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 209 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 210 {"MICROP", "4110", NULL, BLIST_NOTQ}, 211 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 212 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 213 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 216 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 217 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 223 {"Promise", "", NULL, BLIST_SPARSELUN}, 224 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 225 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 226 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 227 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 228 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 229 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 230 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 231 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 232 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 233 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 234 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 235 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 236 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 237 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 238 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 239 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 240 {"SUN", "T300", "*", BLIST_SPARSELUN}, 241 {"SUN", "T4", "*", BLIST_SPARSELUN}, 242 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 243 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 244 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 245 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 246 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 247 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 248 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 249 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 250 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 251 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 252 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 253 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 254 { NULL, NULL, NULL, 0 }, 255}; 256 257static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 258{ 259 struct scsi_dev_info_list_table *devinfo_table; 260 int found = 0; 261 262 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 263 if (devinfo_table->key == key) { 264 found = 1; 265 break; 266 } 267 if (!found) 268 return ERR_PTR(-EINVAL); 269 270 return devinfo_table; 271} 272 273/* 274 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 275 * devinfo vendor and model strings. 276 */ 277static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 278 char *from, int compatible) 279{ 280 size_t from_length; 281 282 from_length = strlen(from); 283 strncpy(to, from, min(to_length, from_length)); 284 if (from_length < to_length) { 285 if (compatible) { 286 /* 287 * NUL terminate the string if it is short. 288 */ 289 to[from_length] = '\0'; 290 } else { 291 /* 292 * space pad the string if it is short. 293 */ 294 strncpy(&to[from_length], spaces, 295 to_length - from_length); 296 } 297 } 298 if (from_length > to_length) 299 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 300 __func__, name, from); 301} 302 303/** 304 * scsi_dev_info_list_add - add one dev_info list entry. 305 * @compatible: if true, null terminate short strings. Otherwise space pad. 306 * @vendor: vendor string 307 * @model: model (product) string 308 * @strflags: integer string 309 * @flags: if strflags NULL, use this flag value 310 * 311 * Description: 312 * Create and add one dev_info entry for @vendor, @model, @strflags or 313 * @flag. If @compatible, add to the tail of the list, do not space 314 * pad, and set devinfo->compatible. The scsi_static_device_list entries 315 * are added with @compatible 1 and @clfags NULL. 316 * 317 * Returns: 0 OK, -error on failure. 318 **/ 319static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 320 char *strflags, int flags) 321{ 322 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 323 strflags, flags, 324 SCSI_DEVINFO_GLOBAL); 325} 326 327/** 328 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 329 * @compatible: if true, null terminate short strings. Otherwise space pad. 330 * @vendor: vendor string 331 * @model: model (product) string 332 * @strflags: integer string 333 * @flags: if strflags NULL, use this flag value 334 * @key: specify list to use 335 * 336 * Description: 337 * Create and add one dev_info entry for @vendor, @model, 338 * @strflags or @flag in list specified by @key. If @compatible, 339 * add to the tail of the list, do not space pad, and set 340 * devinfo->compatible. The scsi_static_device_list entries are 341 * added with @compatible 1 and @clfags NULL. 342 * 343 * Returns: 0 OK, -error on failure. 344 **/ 345int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 346 char *strflags, int flags, int key) 347{ 348 struct scsi_dev_info_list *devinfo; 349 struct scsi_dev_info_list_table *devinfo_table = 350 scsi_devinfo_lookup_by_key(key); 351 352 if (IS_ERR(devinfo_table)) 353 return PTR_ERR(devinfo_table); 354 355 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 356 if (!devinfo) { 357 printk(KERN_ERR "%s: no memory\n", __func__); 358 return -ENOMEM; 359 } 360 361 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 362 vendor, compatible); 363 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 364 model, compatible); 365 366 if (strflags) 367 devinfo->flags = simple_strtoul(strflags, NULL, 0); 368 else 369 devinfo->flags = flags; 370 371 devinfo->compatible = compatible; 372 373 if (compatible) 374 list_add_tail(&devinfo->dev_info_list, 375 &devinfo_table->scsi_dev_info_list); 376 else 377 list_add(&devinfo->dev_info_list, 378 &devinfo_table->scsi_dev_info_list); 379 380 return 0; 381} 382EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 383 384/** 385 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 386 * @dev_list: string of device flags to add 387 * 388 * Description: 389 * Parse dev_list, and add entries to the scsi_dev_info_list. 390 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 391 * dev_list is modified via strsep. Can be called for command line 392 * addition, for proc or mabye a sysfs interface. 393 * 394 * Returns: 0 if OK, -error on failure. 395 **/ 396static int scsi_dev_info_list_add_str(char *dev_list) 397{ 398 char *vendor, *model, *strflags, *next; 399 char *next_check; 400 int res = 0; 401 402 next = dev_list; 403 if (next && next[0] == '"') { 404 /* 405 * Ignore both the leading and trailing quote. 406 */ 407 next++; 408 next_check = ",\""; 409 } else { 410 next_check = ","; 411 } 412 413 /* 414 * For the leading and trailing '"' case, the for loop comes 415 * through the last time with vendor[0] == '\0'. 416 */ 417 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 418 && (res == 0); vendor = strsep(&next, ":")) { 419 strflags = NULL; 420 model = strsep(&next, ":"); 421 if (model) 422 strflags = strsep(&next, next_check); 423 if (!model || !strflags) { 424 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 425 " '%s'\n", __func__, vendor, model, 426 strflags); 427 res = -EINVAL; 428 } else 429 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 430 model, strflags, 0); 431 } 432 return res; 433} 434 435/** 436 * get_device_flags - get device specific flags from the dynamic device list. 437 * @sdev: &scsi_device to get flags for 438 * @vendor: vendor name 439 * @model: model name 440 * 441 * Description: 442 * Search the global scsi_dev_info_list (specified by list zero) 443 * for an entry matching @vendor and @model, if found, return the 444 * matching flags value, else return the host or global default 445 * settings. Called during scan time. 446 **/ 447int scsi_get_device_flags(struct scsi_device *sdev, 448 const unsigned char *vendor, 449 const unsigned char *model) 450{ 451 return scsi_get_device_flags_keyed(sdev, vendor, model, 452 SCSI_DEVINFO_GLOBAL); 453} 454 455 456/** 457 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 458 * @sdev: &scsi_device to get flags for 459 * @vendor: vendor name 460 * @model: model name 461 * @key: list to look up 462 * 463 * Description: 464 * Search the scsi_dev_info_list specified by @key for an entry 465 * matching @vendor and @model, if found, return the matching 466 * flags value, else return the host or global default settings. 467 * Called during scan time. 468 **/ 469int scsi_get_device_flags_keyed(struct scsi_device *sdev, 470 const unsigned char *vendor, 471 const unsigned char *model, 472 int key) 473{ 474 struct scsi_dev_info_list *devinfo; 475 struct scsi_dev_info_list_table *devinfo_table; 476 477 devinfo_table = scsi_devinfo_lookup_by_key(key); 478 479 if (IS_ERR(devinfo_table)) 480 return PTR_ERR(devinfo_table); 481 482 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 483 dev_info_list) { 484 if (devinfo->compatible) { 485 /* 486 * Behave like the older version of get_device_flags. 487 */ 488 size_t max; 489 max = 8; /* max length of vendor */ 490 while ((max > 0) && *vendor == ' ') { 491 max--; 492 vendor++; 493 } 494 if (memcmp(devinfo->vendor, vendor, 495 min(max, strlen(devinfo->vendor)))) 496 continue; 497 /* 498 * Skip spaces again. 499 */ 500 max = 16; /* max length of model */ 501 while ((max > 0) && *model == ' ') { 502 max--; 503 model++; 504 } 505 if (memcmp(devinfo->model, model, 506 min(max, strlen(devinfo->model)))) 507 continue; 508 return devinfo->flags; 509 } else { 510 if (!memcmp(devinfo->vendor, vendor, 511 sizeof(devinfo->vendor)) && 512 !memcmp(devinfo->model, model, 513 sizeof(devinfo->model))) 514 return devinfo->flags; 515 } 516 } 517 /* nothing found, return nothing */ 518 if (key != SCSI_DEVINFO_GLOBAL) 519 return 0; 520 521 /* except for the global list, where we have an exception */ 522 if (sdev->sdev_bflags) 523 return sdev->sdev_bflags; 524 525 return scsi_default_dev_flags; 526} 527EXPORT_SYMBOL(scsi_get_device_flags_keyed); 528 529#ifdef CONFIG_SCSI_PROC_FS 530struct double_list { 531 struct list_head *top; 532 struct list_head *bottom; 533}; 534 535static int devinfo_seq_show(struct seq_file *m, void *v) 536{ 537 struct double_list *dl = v; 538 struct scsi_dev_info_list_table *devinfo_table = 539 list_entry(dl->top, struct scsi_dev_info_list_table, node); 540 struct scsi_dev_info_list *devinfo = 541 list_entry(dl->bottom, struct scsi_dev_info_list, 542 dev_info_list); 543 544 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 545 devinfo_table->name) 546 seq_printf(m, "[%s]:\n", devinfo_table->name); 547 548 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 549 devinfo->vendor, devinfo->model, devinfo->flags); 550 return 0; 551} 552 553static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 554{ 555 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 556 loff_t pos = *ppos; 557 558 if (!dl) 559 return NULL; 560 561 list_for_each(dl->top, &scsi_dev_info_list) { 562 struct scsi_dev_info_list_table *devinfo_table = 563 list_entry(dl->top, struct scsi_dev_info_list_table, 564 node); 565 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 566 if (pos-- == 0) 567 return dl; 568 } 569 570 kfree(dl); 571 return NULL; 572} 573 574static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 575{ 576 struct double_list *dl = v; 577 struct scsi_dev_info_list_table *devinfo_table = 578 list_entry(dl->top, struct scsi_dev_info_list_table, node); 579 580 ++*ppos; 581 dl->bottom = dl->bottom->next; 582 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 583 dl->top = dl->top->next; 584 if (dl->top == &scsi_dev_info_list) { 585 kfree(dl); 586 return NULL; 587 } 588 devinfo_table = list_entry(dl->top, 589 struct scsi_dev_info_list_table, 590 node); 591 dl->bottom = devinfo_table->scsi_dev_info_list.next; 592 } 593 594 return dl; 595} 596 597static void devinfo_seq_stop(struct seq_file *m, void *v) 598{ 599 kfree(v); 600} 601 602static const struct seq_operations scsi_devinfo_seq_ops = { 603 .start = devinfo_seq_start, 604 .next = devinfo_seq_next, 605 .stop = devinfo_seq_stop, 606 .show = devinfo_seq_show, 607}; 608 609static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 610{ 611 return seq_open(file, &scsi_devinfo_seq_ops); 612} 613 614/* 615 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 616 * 617 * Description: Adds a black/white list entry for vendor and model with an 618 * integer value of flag to the scsi device info list. 619 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 620 */ 621static ssize_t proc_scsi_devinfo_write(struct file *file, 622 const char __user *buf, 623 size_t length, loff_t *ppos) 624{ 625 char *buffer; 626 ssize_t err = length; 627 628 if (!buf || length>PAGE_SIZE) 629 return -EINVAL; 630 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 631 return -ENOMEM; 632 if (copy_from_user(buffer, buf, length)) { 633 err =-EFAULT; 634 goto out; 635 } 636 637 if (length < PAGE_SIZE) 638 buffer[length] = '\0'; 639 else if (buffer[PAGE_SIZE-1]) { 640 err = -EINVAL; 641 goto out; 642 } 643 644 scsi_dev_info_list_add_str(buffer); 645 646out: 647 free_page((unsigned long)buffer); 648 return err; 649} 650 651static const struct file_operations scsi_devinfo_proc_fops = { 652 .owner = THIS_MODULE, 653 .open = proc_scsi_devinfo_open, 654 .read = seq_read, 655 .write = proc_scsi_devinfo_write, 656 .llseek = seq_lseek, 657 .release = seq_release, 658}; 659#endif /* CONFIG_SCSI_PROC_FS */ 660 661module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 662MODULE_PARM_DESC(dev_flags, 663 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 664 " list entries for vendor and model with an integer value of flags" 665 " to the scsi device info list"); 666 667module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 668MODULE_PARM_DESC(default_dev_flags, 669 "scsi default device flag integer value"); 670 671/** 672 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 673 **/ 674void scsi_exit_devinfo(void) 675{ 676#ifdef CONFIG_SCSI_PROC_FS 677 remove_proc_entry("scsi/device_info", NULL); 678#endif 679 680 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 681} 682 683/** 684 * scsi_dev_info_add_list - add a new devinfo list 685 * @key: key of the list to add 686 * @name: Name of the list to add (for /proc/scsi/device_info) 687 * 688 * Adds the requested list, returns zero on success, -EEXIST if the 689 * key is already registered to a list, or other error on failure. 690 */ 691int scsi_dev_info_add_list(int key, const char *name) 692{ 693 struct scsi_dev_info_list_table *devinfo_table = 694 scsi_devinfo_lookup_by_key(key); 695 696 if (!IS_ERR(devinfo_table)) 697 /* list already exists */ 698 return -EEXIST; 699 700 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 701 702 if (!devinfo_table) 703 return -ENOMEM; 704 705 INIT_LIST_HEAD(&devinfo_table->node); 706 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 707 devinfo_table->name = name; 708 devinfo_table->key = key; 709 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 710 711 return 0; 712} 713EXPORT_SYMBOL(scsi_dev_info_add_list); 714 715/** 716 * scsi_dev_info_remove_list - destroy an added devinfo list 717 * @key: key of the list to destroy 718 * 719 * Iterates over the entire list first, freeing all the values, then 720 * frees the list itself. Returns 0 on success or -EINVAL if the key 721 * can't be found. 722 */ 723int scsi_dev_info_remove_list(int key) 724{ 725 struct list_head *lh, *lh_next; 726 struct scsi_dev_info_list_table *devinfo_table = 727 scsi_devinfo_lookup_by_key(key); 728 729 if (IS_ERR(devinfo_table)) 730 /* no such list */ 731 return -EINVAL; 732 733 /* remove from the master list */ 734 list_del(&devinfo_table->node); 735 736 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 737 struct scsi_dev_info_list *devinfo; 738 739 devinfo = list_entry(lh, struct scsi_dev_info_list, 740 dev_info_list); 741 kfree(devinfo); 742 } 743 kfree(devinfo_table); 744 745 return 0; 746} 747EXPORT_SYMBOL(scsi_dev_info_remove_list); 748 749/** 750 * scsi_init_devinfo - set up the dynamic device list. 751 * 752 * Description: 753 * Add command line entries from scsi_dev_flags, then add 754 * scsi_static_device_list entries to the scsi device info list. 755 */ 756int __init scsi_init_devinfo(void) 757{ 758#ifdef CONFIG_SCSI_PROC_FS 759 struct proc_dir_entry *p; 760#endif 761 int error, i; 762 763 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 764 if (error) 765 return error; 766 767 error = scsi_dev_info_list_add_str(scsi_dev_flags); 768 if (error) 769 goto out; 770 771 for (i = 0; scsi_static_device_list[i].vendor; i++) { 772 error = scsi_dev_info_list_add(1 /* compatibile */, 773 scsi_static_device_list[i].vendor, 774 scsi_static_device_list[i].model, 775 NULL, 776 scsi_static_device_list[i].flags); 777 if (error) 778 goto out; 779 } 780 781#ifdef CONFIG_SCSI_PROC_FS 782 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 783 if (!p) { 784 error = -ENOMEM; 785 goto out; 786 } 787#endif /* CONFIG_SCSI_PROC_FS */ 788 789 out: 790 if (error) 791 scsi_exit_devinfo(); 792 return error; 793} 794