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 */ 20 struct 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 28 struct 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 36 static const char spaces[] = " "; /* 16 of them */ 37 static unsigned scsi_default_dev_flags; 38 static LIST_HEAD(scsi_dev_info_list); 39 static 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 */ 50 static 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 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 210 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 211 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 212 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 213 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 214 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 215 {"MICROP", "4110", NULL, BLIST_NOTQ}, 216 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC}, 217 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 218 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 219 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 223 {"NETAPP", "LUN C-Mode", NULL, BLIST_SYNC_ALUA}, 224 {"NETAPP", "INF-01-00", NULL, BLIST_SYNC_ALUA}, 225 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 226 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 227 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 228 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 229 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 230 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 231 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 232 {"Promise", "", NULL, BLIST_SPARSELUN}, 233 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 234 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 235 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 236 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 237 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 238 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 239 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 240 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 241 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 242 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 243 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 244 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 245 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 246 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 247 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 248 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 249 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 250 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 251 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 252 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 253 {"SUN", "T300", "*", BLIST_SPARSELUN}, 254 {"SUN", "T4", "*", BLIST_SPARSELUN}, 255 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, 256 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 257 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 258 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 259 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 260 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 261 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 262 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 263 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 264 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 265 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 266 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 267 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 268 { NULL, NULL, NULL, 0 }, 269 }; 270 271 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 272 { 273 struct scsi_dev_info_list_table *devinfo_table; 274 int found = 0; 275 276 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 277 if (devinfo_table->key == key) { 278 found = 1; 279 break; 280 } 281 if (!found) 282 return ERR_PTR(-EINVAL); 283 284 return devinfo_table; 285 } 286 287 /* 288 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 289 * devinfo vendor and model strings. 290 */ 291 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 292 char *from, int compatible) 293 { 294 size_t from_length; 295 296 from_length = strlen(from); 297 strncpy(to, from, min(to_length, from_length)); 298 if (from_length < to_length) { 299 if (compatible) { 300 /* 301 * NUL terminate the string if it is short. 302 */ 303 to[from_length] = '\0'; 304 } else { 305 /* 306 * space pad the string if it is short. 307 */ 308 strncpy(&to[from_length], spaces, 309 to_length - from_length); 310 } 311 } 312 if (from_length > to_length) 313 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 314 __func__, name, from); 315 } 316 317 /** 318 * scsi_dev_info_list_add - add one dev_info list entry. 319 * @compatible: if true, null terminate short strings. Otherwise space pad. 320 * @vendor: vendor string 321 * @model: model (product) string 322 * @strflags: integer string 323 * @flags: if strflags NULL, use this flag value 324 * 325 * Description: 326 * Create and add one dev_info entry for @vendor, @model, @strflags or 327 * @flag. If @compatible, add to the tail of the list, do not space 328 * pad, and set devinfo->compatible. The scsi_static_device_list entries 329 * are added with @compatible 1 and @clfags NULL. 330 * 331 * Returns: 0 OK, -error on failure. 332 **/ 333 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 334 char *strflags, int flags) 335 { 336 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 337 strflags, flags, 338 SCSI_DEVINFO_GLOBAL); 339 } 340 341 /** 342 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 343 * @compatible: if true, null terminate short strings. Otherwise space pad. 344 * @vendor: vendor string 345 * @model: model (product) string 346 * @strflags: integer string 347 * @flags: if strflags NULL, use this flag value 348 * @key: specify list to use 349 * 350 * Description: 351 * Create and add one dev_info entry for @vendor, @model, 352 * @strflags or @flag in list specified by @key. If @compatible, 353 * add to the tail of the list, do not space pad, and set 354 * devinfo->compatible. The scsi_static_device_list entries are 355 * added with @compatible 1 and @clfags NULL. 356 * 357 * Returns: 0 OK, -error on failure. 358 **/ 359 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 360 char *strflags, int flags, int key) 361 { 362 struct scsi_dev_info_list *devinfo; 363 struct scsi_dev_info_list_table *devinfo_table = 364 scsi_devinfo_lookup_by_key(key); 365 366 if (IS_ERR(devinfo_table)) 367 return PTR_ERR(devinfo_table); 368 369 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 370 if (!devinfo) { 371 printk(KERN_ERR "%s: no memory\n", __func__); 372 return -ENOMEM; 373 } 374 375 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 376 vendor, compatible); 377 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 378 model, compatible); 379 380 if (strflags) 381 devinfo->flags = simple_strtoul(strflags, NULL, 0); 382 else 383 devinfo->flags = flags; 384 385 devinfo->compatible = compatible; 386 387 if (compatible) 388 list_add_tail(&devinfo->dev_info_list, 389 &devinfo_table->scsi_dev_info_list); 390 else 391 list_add(&devinfo->dev_info_list, 392 &devinfo_table->scsi_dev_info_list); 393 394 return 0; 395 } 396 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 397 398 /** 399 * scsi_dev_info_list_find - find a matching dev_info list entry. 400 * @vendor: vendor string 401 * @model: model (product) string 402 * @key: specify list to use 403 * 404 * Description: 405 * Finds the first dev_info entry matching @vendor, @model 406 * in list specified by @key. 407 * 408 * Returns: pointer to matching entry, or ERR_PTR on failure. 409 **/ 410 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 411 const char *model, int key) 412 { 413 struct scsi_dev_info_list *devinfo; 414 struct scsi_dev_info_list_table *devinfo_table = 415 scsi_devinfo_lookup_by_key(key); 416 size_t vmax, mmax; 417 const char *vskip, *mskip; 418 419 if (IS_ERR(devinfo_table)) 420 return (struct scsi_dev_info_list *) devinfo_table; 421 422 /* Prepare for "compatible" matches */ 423 424 /* 425 * XXX why skip leading spaces? If an odd INQUIRY 426 * value, that should have been part of the 427 * scsi_static_device_list[] entry, such as " FOO" 428 * rather than "FOO". Since this code is already 429 * here, and we don't know what device it is 430 * trying to work with, leave it as-is. 431 */ 432 vmax = 8; /* max length of vendor */ 433 vskip = vendor; 434 while (vmax > 0 && *vskip == ' ') { 435 vmax--; 436 vskip++; 437 } 438 /* Also skip trailing spaces */ 439 while (vmax > 0 && vskip[vmax - 1] == ' ') 440 --vmax; 441 442 mmax = 16; /* max length of model */ 443 mskip = model; 444 while (mmax > 0 && *mskip == ' ') { 445 mmax--; 446 mskip++; 447 } 448 while (mmax > 0 && mskip[mmax - 1] == ' ') 449 --mmax; 450 451 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 452 dev_info_list) { 453 if (devinfo->compatible) { 454 /* 455 * Behave like the older version of get_device_flags. 456 */ 457 if (memcmp(devinfo->vendor, vskip, vmax) || 458 devinfo->vendor[vmax]) 459 continue; 460 if (memcmp(devinfo->model, mskip, mmax) || 461 devinfo->model[mmax]) 462 continue; 463 return devinfo; 464 } else { 465 if (!memcmp(devinfo->vendor, vendor, 466 sizeof(devinfo->vendor)) && 467 !memcmp(devinfo->model, model, 468 sizeof(devinfo->model))) 469 return devinfo; 470 } 471 } 472 473 return ERR_PTR(-ENOENT); 474 } 475 476 /** 477 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 478 * @vendor: vendor string 479 * @model: model (product) string 480 * @key: specify list to use 481 * 482 * Description: 483 * Remove and destroy one dev_info entry for @vendor, @model 484 * in list specified by @key. 485 * 486 * Returns: 0 OK, -error on failure. 487 **/ 488 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) 489 { 490 struct scsi_dev_info_list *found; 491 492 found = scsi_dev_info_list_find(vendor, model, key); 493 if (IS_ERR(found)) 494 return PTR_ERR(found); 495 496 list_del(&found->dev_info_list); 497 kfree(found); 498 return 0; 499 } 500 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 501 502 /** 503 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 504 * @dev_list: string of device flags to add 505 * 506 * Description: 507 * Parse dev_list, and add entries to the scsi_dev_info_list. 508 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 509 * dev_list is modified via strsep. Can be called for command line 510 * addition, for proc or mabye a sysfs interface. 511 * 512 * Returns: 0 if OK, -error on failure. 513 **/ 514 static int scsi_dev_info_list_add_str(char *dev_list) 515 { 516 char *vendor, *model, *strflags, *next; 517 char *next_check; 518 int res = 0; 519 520 next = dev_list; 521 if (next && next[0] == '"') { 522 /* 523 * Ignore both the leading and trailing quote. 524 */ 525 next++; 526 next_check = ",\""; 527 } else { 528 next_check = ","; 529 } 530 531 /* 532 * For the leading and trailing '"' case, the for loop comes 533 * through the last time with vendor[0] == '\0'. 534 */ 535 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 536 && (res == 0); vendor = strsep(&next, ":")) { 537 strflags = NULL; 538 model = strsep(&next, ":"); 539 if (model) 540 strflags = strsep(&next, next_check); 541 if (!model || !strflags) { 542 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 543 " '%s'\n", __func__, vendor, model, 544 strflags); 545 res = -EINVAL; 546 } else 547 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 548 model, strflags, 0); 549 } 550 return res; 551 } 552 553 /** 554 * get_device_flags - get device specific flags from the dynamic device list. 555 * @sdev: &scsi_device to get flags for 556 * @vendor: vendor name 557 * @model: model name 558 * 559 * Description: 560 * Search the global scsi_dev_info_list (specified by list zero) 561 * for an entry matching @vendor and @model, if found, return the 562 * matching flags value, else return the host or global default 563 * settings. Called during scan time. 564 **/ 565 int scsi_get_device_flags(struct scsi_device *sdev, 566 const unsigned char *vendor, 567 const unsigned char *model) 568 { 569 return scsi_get_device_flags_keyed(sdev, vendor, model, 570 SCSI_DEVINFO_GLOBAL); 571 } 572 573 574 /** 575 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 576 * @sdev: &scsi_device to get flags for 577 * @vendor: vendor name 578 * @model: model name 579 * @key: list to look up 580 * 581 * Description: 582 * Search the scsi_dev_info_list specified by @key for an entry 583 * matching @vendor and @model, if found, return the matching 584 * flags value, else return the host or global default settings. 585 * Called during scan time. 586 **/ 587 int scsi_get_device_flags_keyed(struct scsi_device *sdev, 588 const unsigned char *vendor, 589 const unsigned char *model, 590 int key) 591 { 592 struct scsi_dev_info_list *devinfo; 593 int err; 594 595 devinfo = scsi_dev_info_list_find(vendor, model, key); 596 if (!IS_ERR(devinfo)) 597 return devinfo->flags; 598 599 err = PTR_ERR(devinfo); 600 if (err != -ENOENT) 601 return err; 602 603 /* nothing found, return nothing */ 604 if (key != SCSI_DEVINFO_GLOBAL) 605 return 0; 606 607 /* except for the global list, where we have an exception */ 608 if (sdev->sdev_bflags) 609 return sdev->sdev_bflags; 610 611 return scsi_default_dev_flags; 612 } 613 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 614 615 #ifdef CONFIG_SCSI_PROC_FS 616 struct double_list { 617 struct list_head *top; 618 struct list_head *bottom; 619 }; 620 621 static int devinfo_seq_show(struct seq_file *m, void *v) 622 { 623 struct double_list *dl = v; 624 struct scsi_dev_info_list_table *devinfo_table = 625 list_entry(dl->top, struct scsi_dev_info_list_table, node); 626 struct scsi_dev_info_list *devinfo = 627 list_entry(dl->bottom, struct scsi_dev_info_list, 628 dev_info_list); 629 630 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 631 devinfo_table->name) 632 seq_printf(m, "[%s]:\n", devinfo_table->name); 633 634 seq_printf(m, "'%.8s' '%.16s' 0x%x\n", 635 devinfo->vendor, devinfo->model, devinfo->flags); 636 return 0; 637 } 638 639 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 640 { 641 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 642 loff_t pos = *ppos; 643 644 if (!dl) 645 return NULL; 646 647 list_for_each(dl->top, &scsi_dev_info_list) { 648 struct scsi_dev_info_list_table *devinfo_table = 649 list_entry(dl->top, struct scsi_dev_info_list_table, 650 node); 651 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 652 if (pos-- == 0) 653 return dl; 654 } 655 656 kfree(dl); 657 return NULL; 658 } 659 660 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 661 { 662 struct double_list *dl = v; 663 struct scsi_dev_info_list_table *devinfo_table = 664 list_entry(dl->top, struct scsi_dev_info_list_table, node); 665 666 ++*ppos; 667 dl->bottom = dl->bottom->next; 668 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 669 dl->top = dl->top->next; 670 if (dl->top == &scsi_dev_info_list) { 671 kfree(dl); 672 return NULL; 673 } 674 devinfo_table = list_entry(dl->top, 675 struct scsi_dev_info_list_table, 676 node); 677 dl->bottom = devinfo_table->scsi_dev_info_list.next; 678 } 679 680 return dl; 681 } 682 683 static void devinfo_seq_stop(struct seq_file *m, void *v) 684 { 685 kfree(v); 686 } 687 688 static const struct seq_operations scsi_devinfo_seq_ops = { 689 .start = devinfo_seq_start, 690 .next = devinfo_seq_next, 691 .stop = devinfo_seq_stop, 692 .show = devinfo_seq_show, 693 }; 694 695 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 696 { 697 return seq_open(file, &scsi_devinfo_seq_ops); 698 } 699 700 /* 701 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 702 * 703 * Description: Adds a black/white list entry for vendor and model with an 704 * integer value of flag to the scsi device info list. 705 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 706 */ 707 static ssize_t proc_scsi_devinfo_write(struct file *file, 708 const char __user *buf, 709 size_t length, loff_t *ppos) 710 { 711 char *buffer; 712 ssize_t err = length; 713 714 if (!buf || length>PAGE_SIZE) 715 return -EINVAL; 716 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 717 return -ENOMEM; 718 if (copy_from_user(buffer, buf, length)) { 719 err =-EFAULT; 720 goto out; 721 } 722 723 if (length < PAGE_SIZE) 724 buffer[length] = '\0'; 725 else if (buffer[PAGE_SIZE-1]) { 726 err = -EINVAL; 727 goto out; 728 } 729 730 scsi_dev_info_list_add_str(buffer); 731 732 out: 733 free_page((unsigned long)buffer); 734 return err; 735 } 736 737 static const struct file_operations scsi_devinfo_proc_fops = { 738 .owner = THIS_MODULE, 739 .open = proc_scsi_devinfo_open, 740 .read = seq_read, 741 .write = proc_scsi_devinfo_write, 742 .llseek = seq_lseek, 743 .release = seq_release, 744 }; 745 #endif /* CONFIG_SCSI_PROC_FS */ 746 747 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 748 MODULE_PARM_DESC(dev_flags, 749 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 750 " list entries for vendor and model with an integer value of flags" 751 " to the scsi device info list"); 752 753 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); 754 MODULE_PARM_DESC(default_dev_flags, 755 "scsi default device flag integer value"); 756 757 /** 758 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 759 **/ 760 void scsi_exit_devinfo(void) 761 { 762 #ifdef CONFIG_SCSI_PROC_FS 763 remove_proc_entry("scsi/device_info", NULL); 764 #endif 765 766 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 767 } 768 769 /** 770 * scsi_dev_info_add_list - add a new devinfo list 771 * @key: key of the list to add 772 * @name: Name of the list to add (for /proc/scsi/device_info) 773 * 774 * Adds the requested list, returns zero on success, -EEXIST if the 775 * key is already registered to a list, or other error on failure. 776 */ 777 int scsi_dev_info_add_list(int key, const char *name) 778 { 779 struct scsi_dev_info_list_table *devinfo_table = 780 scsi_devinfo_lookup_by_key(key); 781 782 if (!IS_ERR(devinfo_table)) 783 /* list already exists */ 784 return -EEXIST; 785 786 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 787 788 if (!devinfo_table) 789 return -ENOMEM; 790 791 INIT_LIST_HEAD(&devinfo_table->node); 792 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 793 devinfo_table->name = name; 794 devinfo_table->key = key; 795 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 796 797 return 0; 798 } 799 EXPORT_SYMBOL(scsi_dev_info_add_list); 800 801 /** 802 * scsi_dev_info_remove_list - destroy an added devinfo list 803 * @key: key of the list to destroy 804 * 805 * Iterates over the entire list first, freeing all the values, then 806 * frees the list itself. Returns 0 on success or -EINVAL if the key 807 * can't be found. 808 */ 809 int scsi_dev_info_remove_list(int key) 810 { 811 struct list_head *lh, *lh_next; 812 struct scsi_dev_info_list_table *devinfo_table = 813 scsi_devinfo_lookup_by_key(key); 814 815 if (IS_ERR(devinfo_table)) 816 /* no such list */ 817 return -EINVAL; 818 819 /* remove from the master list */ 820 list_del(&devinfo_table->node); 821 822 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 823 struct scsi_dev_info_list *devinfo; 824 825 devinfo = list_entry(lh, struct scsi_dev_info_list, 826 dev_info_list); 827 kfree(devinfo); 828 } 829 kfree(devinfo_table); 830 831 return 0; 832 } 833 EXPORT_SYMBOL(scsi_dev_info_remove_list); 834 835 /** 836 * scsi_init_devinfo - set up the dynamic device list. 837 * 838 * Description: 839 * Add command line entries from scsi_dev_flags, then add 840 * scsi_static_device_list entries to the scsi device info list. 841 */ 842 int __init scsi_init_devinfo(void) 843 { 844 #ifdef CONFIG_SCSI_PROC_FS 845 struct proc_dir_entry *p; 846 #endif 847 int error, i; 848 849 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 850 if (error) 851 return error; 852 853 error = scsi_dev_info_list_add_str(scsi_dev_flags); 854 if (error) 855 goto out; 856 857 for (i = 0; scsi_static_device_list[i].vendor; i++) { 858 error = scsi_dev_info_list_add(1 /* compatibile */, 859 scsi_static_device_list[i].vendor, 860 scsi_static_device_list[i].model, 861 NULL, 862 scsi_static_device_list[i].flags); 863 if (error) 864 goto out; 865 } 866 867 #ifdef CONFIG_SCSI_PROC_FS 868 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); 869 if (!p) { 870 error = -ENOMEM; 871 goto out; 872 } 873 #endif /* CONFIG_SCSI_PROC_FS */ 874 875 out: 876 if (error) 877 scsi_exit_devinfo(); 878 return error; 879 } 880