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 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 209 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 210 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 211 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 212 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 213 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 214 {"MICROP", "4110", NULL, BLIST_NOTQ}, 215 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC}, 216 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 217 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 218 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 222 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 223 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 224 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 225 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 226 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 227 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 228 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 229 {"Promise", "", NULL, BLIST_SPARSELUN}, 230 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 231 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 232 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 233 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 234 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 235 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 236 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 237 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 238 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 239 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 240 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 241 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 242 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 243 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 244 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 245 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 246 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 247 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 248 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 249 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 250 {"SUN", "T300", "*", BLIST_SPARSELUN}, 251 {"SUN", "T4", "*", BLIST_SPARSELUN}, 252 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 253 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 254 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 255 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 256 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 257 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 258 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 259 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 260 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 261 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 262 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 263 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 264 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 265 { NULL, NULL, NULL, 0 }, 266}; 267 268static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 269{ 270 struct scsi_dev_info_list_table *devinfo_table; 271 int found = 0; 272 273 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 274 if (devinfo_table->key == key) { 275 found = 1; 276 break; 277 } 278 if (!found) 279 return ERR_PTR(-EINVAL); 280 281 return devinfo_table; 282} 283 284/* 285 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 286 * devinfo vendor and model strings. 287 */ 288static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 289 char *from, int compatible) 290{ 291 size_t from_length; 292 293 from_length = strlen(from); 294 strncpy(to, from, min(to_length, from_length)); 295 if (from_length < to_length) { 296 if (compatible) { 297 /* 298 * NUL terminate the string if it is short. 299 */ 300 to[from_length] = '\0'; 301 } else { 302 /* 303 * space pad the string if it is short. 304 */ 305 strncpy(&to[from_length], spaces, 306 to_length - from_length); 307 } 308 } 309 if (from_length > to_length) 310 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 311 __func__, name, from); 312} 313 314/** 315 * scsi_dev_info_list_add - add one dev_info list entry. 316 * @compatible: if true, null terminate short strings. Otherwise space pad. 317 * @vendor: vendor string 318 * @model: model (product) string 319 * @strflags: integer string 320 * @flags: if strflags NULL, use this flag value 321 * 322 * Description: 323 * Create and add one dev_info entry for @vendor, @model, @strflags or 324 * @flag. If @compatible, add to the tail of the list, do not space 325 * pad, and set devinfo->compatible. The scsi_static_device_list entries 326 * are added with @compatible 1 and @clfags NULL. 327 * 328 * Returns: 0 OK, -error on failure. 329 **/ 330static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 331 char *strflags, int flags) 332{ 333 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 334 strflags, flags, 335 SCSI_DEVINFO_GLOBAL); 336} 337 338/** 339 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 340 * @compatible: if true, null terminate short strings. Otherwise space pad. 341 * @vendor: vendor string 342 * @model: model (product) string 343 * @strflags: integer string 344 * @flags: if strflags NULL, use this flag value 345 * @key: specify list to use 346 * 347 * Description: 348 * Create and add one dev_info entry for @vendor, @model, 349 * @strflags or @flag in list specified by @key. If @compatible, 350 * add to the tail of the list, do not space pad, and set 351 * devinfo->compatible. The scsi_static_device_list entries are 352 * added with @compatible 1 and @clfags NULL. 353 * 354 * Returns: 0 OK, -error on failure. 355 **/ 356int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 357 char *strflags, int flags, int key) 358{ 359 struct scsi_dev_info_list *devinfo; 360 struct scsi_dev_info_list_table *devinfo_table = 361 scsi_devinfo_lookup_by_key(key); 362 363 if (IS_ERR(devinfo_table)) 364 return PTR_ERR(devinfo_table); 365 366 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 367 if (!devinfo) { 368 printk(KERN_ERR "%s: no memory\n", __func__); 369 return -ENOMEM; 370 } 371 372 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 373 vendor, compatible); 374 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 375 model, compatible); 376 377 if (strflags) 378 devinfo->flags = simple_strtoul(strflags, NULL, 0); 379 else 380 devinfo->flags = flags; 381 382 devinfo->compatible = compatible; 383 384 if (compatible) 385 list_add_tail(&devinfo->dev_info_list, 386 &devinfo_table->scsi_dev_info_list); 387 else 388 list_add(&devinfo->dev_info_list, 389 &devinfo_table->scsi_dev_info_list); 390 391 return 0; 392} 393EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 394 395/** 396 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 397 * @vendor: vendor string 398 * @model: model (product) string 399 * @key: specify list to use 400 * 401 * Description: 402 * Remove and destroy one dev_info entry for @vendor, @model 403 * in list specified by @key. 404 * 405 * Returns: 0 OK, -error on failure. 406 **/ 407int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 408{ 409 struct scsi_dev_info_list *devinfo, *found = NULL; 410 struct scsi_dev_info_list_table *devinfo_table = 411 scsi_devinfo_lookup_by_key(key); 412 413 if (IS_ERR(devinfo_table)) 414 return PTR_ERR(devinfo_table); 415 416 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 417 dev_info_list) { 418 if (devinfo->compatible) { 419 /* 420 * Behave like the older version of get_device_flags. 421 */ 422 size_t max; 423 /* 424 * XXX why skip leading spaces? If an odd INQUIRY 425 * value, that should have been part of the 426 * scsi_static_device_list[] entry, such as " FOO" 427 * rather than "FOO". Since this code is already 428 * here, and we don't know what device it is 429 * trying to work with, leave it as-is. 430 */ 431 max = 8; /* max length of vendor */ 432 while ((max > 0) && *vendor == ' ') { 433 max--; 434 vendor++; 435 } 436 /* 437 * XXX removing the following strlen() would be 438 * good, using it means that for a an entry not in 439 * the list, we scan every byte of every vendor 440 * listed in scsi_static_device_list[], and never match 441 * a single one (and still have to compare at 442 * least the first byte of each vendor). 443 */ 444 if (memcmp(devinfo->vendor, vendor, 445 min(max, strlen(devinfo->vendor)))) 446 continue; 447 /* 448 * Skip spaces again. 449 */ 450 max = 16; /* max length of model */ 451 while ((max > 0) && *model == ' ') { 452 max--; 453 model++; 454 } 455 if (memcmp(devinfo->model, model, 456 min(max, strlen(devinfo->model)))) 457 continue; 458 found = devinfo; 459 } else { 460 if (!memcmp(devinfo->vendor, vendor, 461 sizeof(devinfo->vendor)) && 462 !memcmp(devinfo->model, model, 463 sizeof(devinfo->model))) 464 found = devinfo; 465 } 466 if (found) 467 break; 468 } 469 470 if (found) { 471 list_del(&found->dev_info_list); 472 kfree(found); 473 return 0; 474 } 475 476 return -ENOENT; 477} 478EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 479 480/** 481 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 482 * @dev_list: string of device flags to add 483 * 484 * Description: 485 * Parse dev_list, and add entries to the scsi_dev_info_list. 486 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 487 * dev_list is modified via strsep. Can be called for command line 488 * addition, for proc or mabye a sysfs interface. 489 * 490 * Returns: 0 if OK, -error on failure. 491 **/ 492static int scsi_dev_info_list_add_str(char *dev_list) 493{ 494 char *vendor, *model, *strflags, *next; 495 char *next_check; 496 int res = 0; 497 498 next = dev_list; 499 if (next && next[0] == '"') { 500 /* 501 * Ignore both the leading and trailing quote. 502 */ 503 next++; 504 next_check = ",\""; 505 } else { 506 next_check = ","; 507 } 508 509 /* 510 * For the leading and trailing '"' case, the for loop comes 511 * through the last time with vendor[0] == '\0'. 512 */ 513 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 514 && (res == 0); vendor = strsep(&next, ":")) { 515 strflags = NULL; 516 model = strsep(&next, ":"); 517 if (model) 518 strflags = strsep(&next, next_check); 519 if (!model || !strflags) { 520 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 521 " '%s'\n", __func__, vendor, model, 522 strflags); 523 res = -EINVAL; 524 } else 525 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 526 model, strflags, 0); 527 } 528 return res; 529} 530 531/** 532 * get_device_flags - get device specific flags from the dynamic device list. 533 * @sdev: &scsi_device to get flags for 534 * @vendor: vendor name 535 * @model: model name 536 * 537 * Description: 538 * Search the global scsi_dev_info_list (specified by list zero) 539 * for an entry matching @vendor and @model, if found, return the 540 * matching flags value, else return the host or global default 541 * settings. Called during scan time. 542 **/ 543int scsi_get_device_flags(struct scsi_device *sdev, 544 const unsigned char *vendor, 545 const unsigned char *model) 546{ 547 return scsi_get_device_flags_keyed(sdev, vendor, model, 548 SCSI_DEVINFO_GLOBAL); 549} 550 551 552/** 553 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 554 * @sdev: &scsi_device to get flags for 555 * @vendor: vendor name 556 * @model: model name 557 * @key: list to look up 558 * 559 * Description: 560 * Search the scsi_dev_info_list specified by @key for an entry 561 * matching @vendor and @model, if found, return the matching 562 * flags value, else return the host or global default settings. 563 * Called during scan time. 564 **/ 565int scsi_get_device_flags_keyed(struct scsi_device *sdev, 566 const unsigned char *vendor, 567 const unsigned char *model, 568 int key) 569{ 570 struct scsi_dev_info_list *devinfo; 571 struct scsi_dev_info_list_table *devinfo_table; 572 573 devinfo_table = scsi_devinfo_lookup_by_key(key); 574 575 if (IS_ERR(devinfo_table)) 576 return PTR_ERR(devinfo_table); 577 578 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 579 dev_info_list) { 580 if (devinfo->compatible) { 581 /* 582 * Behave like the older version of get_device_flags. 583 */ 584 size_t max; 585 /* 586 * XXX why skip leading spaces? If an odd INQUIRY 587 * value, that should have been part of the 588 * scsi_static_device_list[] entry, such as " FOO" 589 * rather than "FOO". Since this code is already 590 * here, and we don't know what device it is 591 * trying to work with, leave it as-is. 592 */ 593 max = 8; /* max length of vendor */ 594 while ((max > 0) && *vendor == ' ') { 595 max--; 596 vendor++; 597 } 598 /* 599 * XXX removing the following strlen() would be 600 * good, using it means that for a an entry not in 601 * the list, we scan every byte of every vendor 602 * listed in scsi_static_device_list[], and never match 603 * a single one (and still have to compare at 604 * least the first byte of each vendor). 605 */ 606 if (memcmp(devinfo->vendor, vendor, 607 min(max, strlen(devinfo->vendor)))) 608 continue; 609 /* 610 * Skip spaces again. 611 */ 612 max = 16; /* max length of model */ 613 while ((max > 0) && *model == ' ') { 614 max--; 615 model++; 616 } 617 if (memcmp(devinfo->model, model, 618 min(max, strlen(devinfo->model)))) 619 continue; 620 return devinfo->flags; 621 } else { 622 if (!memcmp(devinfo->vendor, vendor, 623 sizeof(devinfo->vendor)) && 624 !memcmp(devinfo->model, model, 625 sizeof(devinfo->model))) 626 return devinfo->flags; 627 } 628 } 629 /* nothing found, return nothing */ 630 if (key != SCSI_DEVINFO_GLOBAL) 631 return 0; 632 633 /* except for the global list, where we have an exception */ 634 if (sdev->sdev_bflags) 635 return sdev->sdev_bflags; 636 637 return scsi_default_dev_flags; 638} 639EXPORT_SYMBOL(scsi_get_device_flags_keyed); 640 641#ifdef CONFIG_SCSI_PROC_FS 642struct double_list { 643 struct list_head *top; 644 struct list_head *bottom; 645}; 646 647static int devinfo_seq_show(struct seq_file *m, void *v) 648{ 649 struct double_list *dl = v; 650 struct scsi_dev_info_list_table *devinfo_table = 651 list_entry(dl->top, struct scsi_dev_info_list_table, node); 652 struct scsi_dev_info_list *devinfo = 653 list_entry(dl->bottom, struct scsi_dev_info_list, 654 dev_info_list); 655 656 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 657 devinfo_table->name) 658 seq_printf(m, "[%s]:\n", devinfo_table->name); 659 660 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 661 devinfo->vendor, devinfo->model, devinfo->flags); 662 return 0; 663} 664 665static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 666{ 667 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 668 loff_t pos = *ppos; 669 670 if (!dl) 671 return NULL; 672 673 list_for_each(dl->top, &scsi_dev_info_list) { 674 struct scsi_dev_info_list_table *devinfo_table = 675 list_entry(dl->top, struct scsi_dev_info_list_table, 676 node); 677 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 678 if (pos-- == 0) 679 return dl; 680 } 681 682 kfree(dl); 683 return NULL; 684} 685 686static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 687{ 688 struct double_list *dl = v; 689 struct scsi_dev_info_list_table *devinfo_table = 690 list_entry(dl->top, struct scsi_dev_info_list_table, node); 691 692 ++*ppos; 693 dl->bottom = dl->bottom->next; 694 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 695 dl->top = dl->top->next; 696 if (dl->top == &scsi_dev_info_list) { 697 kfree(dl); 698 return NULL; 699 } 700 devinfo_table = list_entry(dl->top, 701 struct scsi_dev_info_list_table, 702 node); 703 dl->bottom = devinfo_table->scsi_dev_info_list.next; 704 } 705 706 return dl; 707} 708 709static void devinfo_seq_stop(struct seq_file *m, void *v) 710{ 711 kfree(v); 712} 713 714static const struct seq_operations scsi_devinfo_seq_ops = { 715 .start = devinfo_seq_start, 716 .next = devinfo_seq_next, 717 .stop = devinfo_seq_stop, 718 .show = devinfo_seq_show, 719}; 720 721static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 722{ 723 return seq_open(file, &scsi_devinfo_seq_ops); 724} 725 726/* 727 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 728 * 729 * Description: Adds a black/white list entry for vendor and model with an 730 * integer value of flag to the scsi device info list. 731 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 732 */ 733static ssize_t proc_scsi_devinfo_write(struct file *file, 734 const char __user *buf, 735 size_t length, loff_t *ppos) 736{ 737 char *buffer; 738 ssize_t err = length; 739 740 if (!buf || length>PAGE_SIZE) 741 return -EINVAL; 742 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 743 return -ENOMEM; 744 if (copy_from_user(buffer, buf, length)) { 745 err =-EFAULT; 746 goto out; 747 } 748 749 if (length < PAGE_SIZE) 750 buffer[length] = '\0'; 751 else if (buffer[PAGE_SIZE-1]) { 752 err = -EINVAL; 753 goto out; 754 } 755 756 scsi_dev_info_list_add_str(buffer); 757 758out: 759 free_page((unsigned long)buffer); 760 return err; 761} 762 763static const struct file_operations scsi_devinfo_proc_fops = { 764 .owner = THIS_MODULE, 765 .open = proc_scsi_devinfo_open, 766 .read = seq_read, 767 .write = proc_scsi_devinfo_write, 768 .llseek = seq_lseek, 769 .release = seq_release, 770}; 771#endif /* CONFIG_SCSI_PROC_FS */ 772 773module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 774MODULE_PARM_DESC(dev_flags, 775 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 776 " list entries for vendor and model with an integer value of flags" 777 " to the scsi device info list"); 778 779module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 780MODULE_PARM_DESC(default_dev_flags, 781 "scsi default device flag integer value"); 782 783/** 784 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 785 **/ 786void scsi_exit_devinfo(void) 787{ 788#ifdef CONFIG_SCSI_PROC_FS 789 remove_proc_entry("scsi/device_info", NULL); 790#endif 791 792 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 793} 794 795/** 796 * scsi_dev_info_add_list - add a new devinfo list 797 * @key: key of the list to add 798 * @name: Name of the list to add (for /proc/scsi/device_info) 799 * 800 * Adds the requested list, returns zero on success, -EEXIST if the 801 * key is already registered to a list, or other error on failure. 802 */ 803int scsi_dev_info_add_list(int key, const char *name) 804{ 805 struct scsi_dev_info_list_table *devinfo_table = 806 scsi_devinfo_lookup_by_key(key); 807 808 if (!IS_ERR(devinfo_table)) 809 /* list already exists */ 810 return -EEXIST; 811 812 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 813 814 if (!devinfo_table) 815 return -ENOMEM; 816 817 INIT_LIST_HEAD(&devinfo_table->node); 818 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 819 devinfo_table->name = name; 820 devinfo_table->key = key; 821 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 822 823 return 0; 824} 825EXPORT_SYMBOL(scsi_dev_info_add_list); 826 827/** 828 * scsi_dev_info_remove_list - destroy an added devinfo list 829 * @key: key of the list to destroy 830 * 831 * Iterates over the entire list first, freeing all the values, then 832 * frees the list itself. Returns 0 on success or -EINVAL if the key 833 * can't be found. 834 */ 835int scsi_dev_info_remove_list(int key) 836{ 837 struct list_head *lh, *lh_next; 838 struct scsi_dev_info_list_table *devinfo_table = 839 scsi_devinfo_lookup_by_key(key); 840 841 if (IS_ERR(devinfo_table)) 842 /* no such list */ 843 return -EINVAL; 844 845 /* remove from the master list */ 846 list_del(&devinfo_table->node); 847 848 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 849 struct scsi_dev_info_list *devinfo; 850 851 devinfo = list_entry(lh, struct scsi_dev_info_list, 852 dev_info_list); 853 kfree(devinfo); 854 } 855 kfree(devinfo_table); 856 857 return 0; 858} 859EXPORT_SYMBOL(scsi_dev_info_remove_list); 860 861/** 862 * scsi_init_devinfo - set up the dynamic device list. 863 * 864 * Description: 865 * Add command line entries from scsi_dev_flags, then add 866 * scsi_static_device_list entries to the scsi device info list. 867 */ 868int __init scsi_init_devinfo(void) 869{ 870#ifdef CONFIG_SCSI_PROC_FS 871 struct proc_dir_entry *p; 872#endif 873 int error, i; 874 875 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 876 if (error) 877 return error; 878 879 error = scsi_dev_info_list_add_str(scsi_dev_flags); 880 if (error) 881 goto out; 882 883 for (i = 0; scsi_static_device_list[i].vendor; i++) { 884 error = scsi_dev_info_list_add(1 /* compatibile */, 885 scsi_static_device_list[i].vendor, 886 scsi_static_device_list[i].model, 887 NULL, 888 scsi_static_device_list[i].flags); 889 if (error) 890 goto out; 891 } 892 893#ifdef CONFIG_SCSI_PROC_FS 894 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 895 if (!p) { 896 error = -ENOMEM; 897 goto out; 898 } 899#endif /* CONFIG_SCSI_PROC_FS */ 900 901 out: 902 if (error) 903 scsi_exit_devinfo(); 904 return error; 905} 906