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", "HUS1530", "*", BLIST_NO_DIF}, 176 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, 177 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 178 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 179 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 180 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 181 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 182 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 183 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ 184 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 185 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 186 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 187 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 188 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 189 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 190 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 192 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 193 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 194 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 195 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 196 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 197 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 198 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 199 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 200 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 201 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 202 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 203 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 204 {"INSITE", "I325VM", NULL, BLIST_KEY}, 205 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 206 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 207 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 208 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 209 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 210 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 211 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 212 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 213 {"MICROP", "4110", NULL, BLIST_NOTQ}, 214 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 215 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 216 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 220 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 223 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 224 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 225 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 226 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 227 {"Promise", "", NULL, BLIST_SPARSELUN}, 228 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 229 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 230 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 231 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 232 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 233 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 234 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 235 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 236 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 237 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 242 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 243 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 244 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 245 {"SUN", "T300", "*", BLIST_SPARSELUN}, 246 {"SUN", "T4", "*", BLIST_SPARSELUN}, 247 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 248 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 249 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 250 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 251 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 252 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 253 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 254 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 255 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 256 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 257 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 258 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 259 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 260 { NULL, NULL, NULL, 0 }, 261}; 262 263static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 264{ 265 struct scsi_dev_info_list_table *devinfo_table; 266 int found = 0; 267 268 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 269 if (devinfo_table->key == key) { 270 found = 1; 271 break; 272 } 273 if (!found) 274 return ERR_PTR(-EINVAL); 275 276 return devinfo_table; 277} 278 279/* 280 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 281 * devinfo vendor and model strings. 282 */ 283static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 284 char *from, int compatible) 285{ 286 size_t from_length; 287 288 from_length = strlen(from); 289 strncpy(to, from, min(to_length, from_length)); 290 if (from_length < to_length) { 291 if (compatible) { 292 /* 293 * NUL terminate the string if it is short. 294 */ 295 to[from_length] = '\0'; 296 } else { 297 /* 298 * space pad the string if it is short. 299 */ 300 strncpy(&to[from_length], spaces, 301 to_length - from_length); 302 } 303 } 304 if (from_length > to_length) 305 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 306 __func__, name, from); 307} 308 309/** 310 * scsi_dev_info_list_add - add one dev_info list entry. 311 * @compatible: if true, null terminate short strings. Otherwise space pad. 312 * @vendor: vendor string 313 * @model: model (product) string 314 * @strflags: integer string 315 * @flags: if strflags NULL, use this flag value 316 * 317 * Description: 318 * Create and add one dev_info entry for @vendor, @model, @strflags or 319 * @flag. If @compatible, add to the tail of the list, do not space 320 * pad, and set devinfo->compatible. The scsi_static_device_list entries 321 * are added with @compatible 1 and @clfags NULL. 322 * 323 * Returns: 0 OK, -error on failure. 324 **/ 325static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 326 char *strflags, int flags) 327{ 328 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 329 strflags, flags, 330 SCSI_DEVINFO_GLOBAL); 331} 332 333/** 334 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 335 * @compatible: if true, null terminate short strings. Otherwise space pad. 336 * @vendor: vendor string 337 * @model: model (product) string 338 * @strflags: integer string 339 * @flags: if strflags NULL, use this flag value 340 * @key: specify list to use 341 * 342 * Description: 343 * Create and add one dev_info entry for @vendor, @model, 344 * @strflags or @flag in list specified by @key. If @compatible, 345 * add to the tail of the list, do not space pad, and set 346 * devinfo->compatible. The scsi_static_device_list entries are 347 * added with @compatible 1 and @clfags NULL. 348 * 349 * Returns: 0 OK, -error on failure. 350 **/ 351int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 352 char *strflags, int flags, int 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 devinfo->flags = simple_strtoul(strflags, NULL, 0); 374 else 375 devinfo->flags = flags; 376 377 devinfo->compatible = compatible; 378 379 if (compatible) 380 list_add_tail(&devinfo->dev_info_list, 381 &devinfo_table->scsi_dev_info_list); 382 else 383 list_add(&devinfo->dev_info_list, 384 &devinfo_table->scsi_dev_info_list); 385 386 return 0; 387} 388EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 389 390/** 391 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 392 * @vendor: vendor string 393 * @model: model (product) string 394 * @key: specify list to use 395 * 396 * Description: 397 * Remove and destroy one dev_info entry for @vendor, @model 398 * in list specified by @key. 399 * 400 * Returns: 0 OK, -error on failure. 401 **/ 402int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 403{ 404 struct scsi_dev_info_list *devinfo, *found = NULL; 405 struct scsi_dev_info_list_table *devinfo_table = 406 scsi_devinfo_lookup_by_key(key); 407 408 if (IS_ERR(devinfo_table)) 409 return PTR_ERR(devinfo_table); 410 411 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 412 dev_info_list) { 413 if (devinfo->compatible) { 414 /* 415 * Behave like the older version of get_device_flags. 416 */ 417 size_t max; 418 /* 419 * XXX why skip leading spaces? If an odd INQUIRY 420 * value, that should have been part of the 421 * scsi_static_device_list[] entry, such as " FOO" 422 * rather than "FOO". Since this code is already 423 * here, and we don't know what device it is 424 * trying to work with, leave it as-is. 425 */ 426 max = 8; /* max length of vendor */ 427 while ((max > 0) && *vendor == ' ') { 428 max--; 429 vendor++; 430 } 431 /* 432 * XXX removing the following strlen() would be 433 * good, using it means that for a an entry not in 434 * the list, we scan every byte of every vendor 435 * listed in scsi_static_device_list[], and never match 436 * a single one (and still have to compare at 437 * least the first byte of each vendor). 438 */ 439 if (memcmp(devinfo->vendor, vendor, 440 min(max, strlen(devinfo->vendor)))) 441 continue; 442 /* 443 * Skip spaces again. 444 */ 445 max = 16; /* max length of model */ 446 while ((max > 0) && *model == ' ') { 447 max--; 448 model++; 449 } 450 if (memcmp(devinfo->model, model, 451 min(max, strlen(devinfo->model)))) 452 continue; 453 found = devinfo; 454 } else { 455 if (!memcmp(devinfo->vendor, vendor, 456 sizeof(devinfo->vendor)) && 457 !memcmp(devinfo->model, model, 458 sizeof(devinfo->model))) 459 found = devinfo; 460 } 461 if (found) 462 break; 463 } 464 465 if (found) { 466 list_del(&found->dev_info_list); 467 kfree(found); 468 return 0; 469 } 470 471 return -ENOENT; 472} 473EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 474 475/** 476 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 477 * @dev_list: string of device flags to add 478 * 479 * Description: 480 * Parse dev_list, and add entries to the scsi_dev_info_list. 481 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 482 * dev_list is modified via strsep. Can be called for command line 483 * addition, for proc or mabye a sysfs interface. 484 * 485 * Returns: 0 if OK, -error on failure. 486 **/ 487static int scsi_dev_info_list_add_str(char *dev_list) 488{ 489 char *vendor, *model, *strflags, *next; 490 char *next_check; 491 int res = 0; 492 493 next = dev_list; 494 if (next && next[0] == '"') { 495 /* 496 * Ignore both the leading and trailing quote. 497 */ 498 next++; 499 next_check = ",\""; 500 } else { 501 next_check = ","; 502 } 503 504 /* 505 * For the leading and trailing '"' case, the for loop comes 506 * through the last time with vendor[0] == '\0'. 507 */ 508 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 509 && (res == 0); vendor = strsep(&next, ":")) { 510 strflags = NULL; 511 model = strsep(&next, ":"); 512 if (model) 513 strflags = strsep(&next, next_check); 514 if (!model || !strflags) { 515 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 516 " '%s'\n", __func__, vendor, model, 517 strflags); 518 res = -EINVAL; 519 } else 520 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 521 model, strflags, 0); 522 } 523 return res; 524} 525 526/** 527 * get_device_flags - get device specific flags from the dynamic device list. 528 * @sdev: &scsi_device to get flags for 529 * @vendor: vendor name 530 * @model: model name 531 * 532 * Description: 533 * Search the global scsi_dev_info_list (specified by list zero) 534 * for an entry matching @vendor and @model, if found, return the 535 * matching flags value, else return the host or global default 536 * settings. Called during scan time. 537 **/ 538int scsi_get_device_flags(struct scsi_device *sdev, 539 const unsigned char *vendor, 540 const unsigned char *model) 541{ 542 return scsi_get_device_flags_keyed(sdev, vendor, model, 543 SCSI_DEVINFO_GLOBAL); 544} 545 546 547/** 548 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 549 * @sdev: &scsi_device to get flags for 550 * @vendor: vendor name 551 * @model: model name 552 * @key: list to look up 553 * 554 * Description: 555 * Search the scsi_dev_info_list specified by @key for an entry 556 * matching @vendor and @model, if found, return the matching 557 * flags value, else return the host or global default settings. 558 * Called during scan time. 559 **/ 560int scsi_get_device_flags_keyed(struct scsi_device *sdev, 561 const unsigned char *vendor, 562 const unsigned char *model, 563 int key) 564{ 565 struct scsi_dev_info_list *devinfo; 566 struct scsi_dev_info_list_table *devinfo_table; 567 568 devinfo_table = scsi_devinfo_lookup_by_key(key); 569 570 if (IS_ERR(devinfo_table)) 571 return PTR_ERR(devinfo_table); 572 573 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 574 dev_info_list) { 575 if (devinfo->compatible) { 576 /* 577 * Behave like the older version of get_device_flags. 578 */ 579 size_t max; 580 /* 581 * XXX why skip leading spaces? If an odd INQUIRY 582 * value, that should have been part of the 583 * scsi_static_device_list[] entry, such as " FOO" 584 * rather than "FOO". Since this code is already 585 * here, and we don't know what device it is 586 * trying to work with, leave it as-is. 587 */ 588 max = 8; /* max length of vendor */ 589 while ((max > 0) && *vendor == ' ') { 590 max--; 591 vendor++; 592 } 593 /* 594 * XXX removing the following strlen() would be 595 * good, using it means that for a an entry not in 596 * the list, we scan every byte of every vendor 597 * listed in scsi_static_device_list[], and never match 598 * a single one (and still have to compare at 599 * least the first byte of each vendor). 600 */ 601 if (memcmp(devinfo->vendor, vendor, 602 min(max, strlen(devinfo->vendor)))) 603 continue; 604 /* 605 * Skip spaces again. 606 */ 607 max = 16; /* max length of model */ 608 while ((max > 0) && *model == ' ') { 609 max--; 610 model++; 611 } 612 if (memcmp(devinfo->model, model, 613 min(max, strlen(devinfo->model)))) 614 continue; 615 return devinfo->flags; 616 } else { 617 if (!memcmp(devinfo->vendor, vendor, 618 sizeof(devinfo->vendor)) && 619 !memcmp(devinfo->model, model, 620 sizeof(devinfo->model))) 621 return devinfo->flags; 622 } 623 } 624 /* nothing found, return nothing */ 625 if (key != SCSI_DEVINFO_GLOBAL) 626 return 0; 627 628 /* except for the global list, where we have an exception */ 629 if (sdev->sdev_bflags) 630 return sdev->sdev_bflags; 631 632 return scsi_default_dev_flags; 633} 634EXPORT_SYMBOL(scsi_get_device_flags_keyed); 635 636#ifdef CONFIG_SCSI_PROC_FS 637struct double_list { 638 struct list_head *top; 639 struct list_head *bottom; 640}; 641 642static int devinfo_seq_show(struct seq_file *m, void *v) 643{ 644 struct double_list *dl = v; 645 struct scsi_dev_info_list_table *devinfo_table = 646 list_entry(dl->top, struct scsi_dev_info_list_table, node); 647 struct scsi_dev_info_list *devinfo = 648 list_entry(dl->bottom, struct scsi_dev_info_list, 649 dev_info_list); 650 651 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 652 devinfo_table->name) 653 seq_printf(m, "[%s]:\n", devinfo_table->name); 654 655 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 656 devinfo->vendor, devinfo->model, devinfo->flags); 657 return 0; 658} 659 660static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 661{ 662 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 663 loff_t pos = *ppos; 664 665 if (!dl) 666 return NULL; 667 668 list_for_each(dl->top, &scsi_dev_info_list) { 669 struct scsi_dev_info_list_table *devinfo_table = 670 list_entry(dl->top, struct scsi_dev_info_list_table, 671 node); 672 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 673 if (pos-- == 0) 674 return dl; 675 } 676 677 kfree(dl); 678 return NULL; 679} 680 681static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 682{ 683 struct double_list *dl = v; 684 struct scsi_dev_info_list_table *devinfo_table = 685 list_entry(dl->top, struct scsi_dev_info_list_table, node); 686 687 ++*ppos; 688 dl->bottom = dl->bottom->next; 689 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 690 dl->top = dl->top->next; 691 if (dl->top == &scsi_dev_info_list) { 692 kfree(dl); 693 return NULL; 694 } 695 devinfo_table = list_entry(dl->top, 696 struct scsi_dev_info_list_table, 697 node); 698 dl->bottom = devinfo_table->scsi_dev_info_list.next; 699 } 700 701 return dl; 702} 703 704static void devinfo_seq_stop(struct seq_file *m, void *v) 705{ 706 kfree(v); 707} 708 709static const struct seq_operations scsi_devinfo_seq_ops = { 710 .start = devinfo_seq_start, 711 .next = devinfo_seq_next, 712 .stop = devinfo_seq_stop, 713 .show = devinfo_seq_show, 714}; 715 716static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 717{ 718 return seq_open(file, &scsi_devinfo_seq_ops); 719} 720 721/* 722 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 723 * 724 * Description: Adds a black/white list entry for vendor and model with an 725 * integer value of flag to the scsi device info list. 726 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 727 */ 728static ssize_t proc_scsi_devinfo_write(struct file *file, 729 const char __user *buf, 730 size_t length, loff_t *ppos) 731{ 732 char *buffer; 733 ssize_t err = length; 734 735 if (!buf || length>PAGE_SIZE) 736 return -EINVAL; 737 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 738 return -ENOMEM; 739 if (copy_from_user(buffer, buf, length)) { 740 err =-EFAULT; 741 goto out; 742 } 743 744 if (length < PAGE_SIZE) 745 buffer[length] = '\0'; 746 else if (buffer[PAGE_SIZE-1]) { 747 err = -EINVAL; 748 goto out; 749 } 750 751 scsi_dev_info_list_add_str(buffer); 752 753out: 754 free_page((unsigned long)buffer); 755 return err; 756} 757 758static const struct file_operations scsi_devinfo_proc_fops = { 759 .owner = THIS_MODULE, 760 .open = proc_scsi_devinfo_open, 761 .read = seq_read, 762 .write = proc_scsi_devinfo_write, 763 .llseek = seq_lseek, 764 .release = seq_release, 765}; 766#endif /* CONFIG_SCSI_PROC_FS */ 767 768module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 769MODULE_PARM_DESC(dev_flags, 770 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 771 " list entries for vendor and model with an integer value of flags" 772 " to the scsi device info list"); 773 774module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 775MODULE_PARM_DESC(default_dev_flags, 776 "scsi default device flag integer value"); 777 778/** 779 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 780 **/ 781void scsi_exit_devinfo(void) 782{ 783#ifdef CONFIG_SCSI_PROC_FS 784 remove_proc_entry("scsi/device_info", NULL); 785#endif 786 787 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 788} 789 790/** 791 * scsi_dev_info_add_list - add a new devinfo list 792 * @key: key of the list to add 793 * @name: Name of the list to add (for /proc/scsi/device_info) 794 * 795 * Adds the requested list, returns zero on success, -EEXIST if the 796 * key is already registered to a list, or other error on failure. 797 */ 798int scsi_dev_info_add_list(int key, const char *name) 799{ 800 struct scsi_dev_info_list_table *devinfo_table = 801 scsi_devinfo_lookup_by_key(key); 802 803 if (!IS_ERR(devinfo_table)) 804 /* list already exists */ 805 return -EEXIST; 806 807 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 808 809 if (!devinfo_table) 810 return -ENOMEM; 811 812 INIT_LIST_HEAD(&devinfo_table->node); 813 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 814 devinfo_table->name = name; 815 devinfo_table->key = key; 816 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 817 818 return 0; 819} 820EXPORT_SYMBOL(scsi_dev_info_add_list); 821 822/** 823 * scsi_dev_info_remove_list - destroy an added devinfo list 824 * @key: key of the list to destroy 825 * 826 * Iterates over the entire list first, freeing all the values, then 827 * frees the list itself. Returns 0 on success or -EINVAL if the key 828 * can't be found. 829 */ 830int scsi_dev_info_remove_list(int key) 831{ 832 struct list_head *lh, *lh_next; 833 struct scsi_dev_info_list_table *devinfo_table = 834 scsi_devinfo_lookup_by_key(key); 835 836 if (IS_ERR(devinfo_table)) 837 /* no such list */ 838 return -EINVAL; 839 840 /* remove from the master list */ 841 list_del(&devinfo_table->node); 842 843 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 844 struct scsi_dev_info_list *devinfo; 845 846 devinfo = list_entry(lh, struct scsi_dev_info_list, 847 dev_info_list); 848 kfree(devinfo); 849 } 850 kfree(devinfo_table); 851 852 return 0; 853} 854EXPORT_SYMBOL(scsi_dev_info_remove_list); 855 856/** 857 * scsi_init_devinfo - set up the dynamic device list. 858 * 859 * Description: 860 * Add command line entries from scsi_dev_flags, then add 861 * scsi_static_device_list entries to the scsi device info list. 862 */ 863int __init scsi_init_devinfo(void) 864{ 865#ifdef CONFIG_SCSI_PROC_FS 866 struct proc_dir_entry *p; 867#endif 868 int error, i; 869 870 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 871 if (error) 872 return error; 873 874 error = scsi_dev_info_list_add_str(scsi_dev_flags); 875 if (error) 876 goto out; 877 878 for (i = 0; scsi_static_device_list[i].vendor; i++) { 879 error = scsi_dev_info_list_add(1 /* compatibile */, 880 scsi_static_device_list[i].vendor, 881 scsi_static_device_list[i].model, 882 NULL, 883 scsi_static_device_list[i].flags); 884 if (error) 885 goto out; 886 } 887 888#ifdef CONFIG_SCSI_PROC_FS 889 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 890 if (!p) { 891 error = -ENOMEM; 892 goto out; 893 } 894#endif /* CONFIG_SCSI_PROC_FS */ 895 896 out: 897 if (error) 898 scsi_exit_devinfo(); 899 return error; 900} 901