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