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