1// SPDX-License-Identifier: GPL-2.0 2 3#include <linux/blkdev.h> 4#include <linux/init.h> 5#include <linux/kernel.h> 6#include <linux/module.h> 7#include <linux/moduleparam.h> 8#include <linux/proc_fs.h> 9#include <linux/seq_file.h> 10#include <linux/slab.h> 11 12#include <scsi/scsi_device.h> 13#include <scsi/scsi_devinfo.h> 14 15#include "scsi_priv.h" 16 17 18/* 19 * scsi_dev_info_list: structure to hold black/white listed devices. 20 */ 21struct scsi_dev_info_list { 22 struct list_head dev_info_list; 23 char vendor[8]; 24 char model[16]; 25 blist_flags_t flags; 26 unsigned compatible; /* for use with scsi_static_device_list entries */ 27}; 28 29struct scsi_dev_info_list_table { 30 struct list_head node; /* our node for being on the master list */ 31 struct list_head scsi_dev_info_list; /* head of dev info list */ 32 const char *name; /* name of list for /proc (NULL for global) */ 33 int key; /* unique numeric identifier */ 34}; 35 36 37static blist_flags_t scsi_default_dev_flags; 38static LIST_HEAD(scsi_dev_info_list); 39static char scsi_dev_flags[256]; 40 41/* 42 * scsi_static_device_list: deprecated list of devices that require 43 * settings that differ from the default, includes black-listed (broken) 44 * devices. The entries here are added to the tail of scsi_dev_info_list 45 * via scsi_dev_info_list_init. 46 * 47 * Do not add to this list, use the command line or proc interface to add 48 * to the scsi_dev_info_list. This table will eventually go away. 49 */ 50static struct { 51 char *vendor; 52 char *model; 53 char *revision; /* revision known to be bad, unused */ 54 blist_flags_t 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", NULL, BLIST_NOLUN}, /* scanjet iip */ 112 {"HP", "C2500A", NULL, 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 | BLIST_BORKEN}, 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 {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES | BLIST_NO_VPD_SIZE}, 138 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, 139 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, 140 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, 141 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, 142 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, 143 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, 144 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ 145 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ 146 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ 147 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 148 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ 149 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ 150 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, 151 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 152 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, 153 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 154 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, 155 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 156 {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, 157 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, 158 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ 159 {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, 160 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, 161 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, storage on LUN 0 */ 162 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */ 163 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 164 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 165 BLIST_REPORTLUN2 | BLIST_RETRY_ITF}, 166 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 167 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 168 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 169 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 170 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 171 {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1}, 172 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 173 {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */ 174 {"Generic", "Ultra HS-SD/MMC", "2.09", BLIST_IGN_MEDIA_CHANGE | BLIST_INQUIRY_36}, 175 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 177 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 178 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, 179 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 180 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 181 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */ 182 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 183 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 184 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 185 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 186 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 187 {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 188 {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 189 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 190 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 191 {"IBM", "2076", NULL, BLIST_NO_VPD_SIZE}, 192 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 193 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 194 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 195 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 196 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 197 {"INSITE", "I325VM", NULL, BLIST_KEY}, 198 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 199 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 200 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 201 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 202 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 203 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 204 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 205 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 206 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 207 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 208 {"MICROP", "4110", NULL, BLIST_NOTQ}, 209 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC}, 210 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 211 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 212 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 213 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 216 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 222 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 223 {"Promise", "", NULL, BLIST_SPARSELUN}, 224 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 225 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 226 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 227 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 228 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 229 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 230 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 231 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 232 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 233 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 234 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 235 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 236 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"SKhynix", "H28U74301AMR", NULL, BLIST_SKIP_VPD_PAGES}, 238 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 242 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 243 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 244 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 245 {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 246 {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 247 {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES | 248 BLIST_INQUIRY_36}, 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 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 256 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 257 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 258 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 259 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 260 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 261 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 262 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 263 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 264 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 265 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 266 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 267 { NULL, NULL, NULL, 0 }, 268}; 269 270static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 271{ 272 struct scsi_dev_info_list_table *devinfo_table; 273 int found = 0; 274 275 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 276 if (devinfo_table->key == key) { 277 found = 1; 278 break; 279 } 280 if (!found) 281 return ERR_PTR(-EINVAL); 282 283 return devinfo_table; 284} 285 286/* 287 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 288 * devinfo vendor and model strings. 289 */ 290static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 291 char *from, int compatible) 292{ 293 size_t from_length; 294 295 from_length = strlen(from); 296 /* This zero-pads the destination */ 297 strncpy(to, from, to_length); 298 if (from_length < to_length && !compatible) { 299 /* 300 * space pad the string if it is short. 301 */ 302 memset(&to[from_length], ' ', to_length - from_length); 303 } 304 if (from_length > to_length) 305 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 306 __func__, name, from); 307} 308 309/** 310 * scsi_dev_info_list_add - add one dev_info list entry. 311 * @compatible: if true, null terminate short strings. Otherwise space pad. 312 * @vendor: vendor string 313 * @model: model (product) string 314 * @strflags: integer string 315 * @flags: if strflags NULL, use this flag value 316 * 317 * Description: 318 * Create and add one dev_info entry for @vendor, @model, @strflags or 319 * @flag. If @compatible, add to the tail of the list, do not space 320 * pad, and set devinfo->compatible. The scsi_static_device_list entries 321 * are added with @compatible 1 and @clfags NULL. 322 * 323 * Returns: 0 OK, -error on failure. 324 **/ 325static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 326 char *strflags, blist_flags_t flags) 327{ 328 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 329 strflags, flags, 330 SCSI_DEVINFO_GLOBAL); 331} 332 333/** 334 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 335 * @compatible: if true, null terminate short strings. Otherwise space pad. 336 * @vendor: vendor string 337 * @model: model (product) string 338 * @strflags: integer string 339 * @flags: if strflags NULL, use this flag value 340 * @key: specify list to use 341 * 342 * Description: 343 * Create and add one dev_info entry for @vendor, @model, 344 * @strflags or @flag in list specified by @key. If @compatible, 345 * add to the tail of the list, do not space pad, and set 346 * devinfo->compatible. The scsi_static_device_list entries are 347 * added with @compatible 1 and @clfags NULL. 348 * 349 * Returns: 0 OK, -error on failure. 350 **/ 351int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 352 char *strflags, blist_flags_t flags, 353 enum scsi_devinfo_key key) 354{ 355 struct scsi_dev_info_list *devinfo; 356 struct scsi_dev_info_list_table *devinfo_table = 357 scsi_devinfo_lookup_by_key(key); 358 359 if (IS_ERR(devinfo_table)) 360 return PTR_ERR(devinfo_table); 361 362 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 363 if (!devinfo) { 364 printk(KERN_ERR "%s: no memory\n", __func__); 365 return -ENOMEM; 366 } 367 368 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 369 vendor, compatible); 370 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 371 model, compatible); 372 373 if (strflags) { 374 unsigned long long val; 375 int ret = kstrtoull(strflags, 0, &val); 376 377 if (ret != 0) { 378 kfree(devinfo); 379 return ret; 380 } 381 flags = (__force blist_flags_t)val; 382 } 383 if (flags & __BLIST_UNUSED_MASK) { 384 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 385 vendor, model, flags & __BLIST_UNUSED_MASK); 386 kfree(devinfo); 387 return -EINVAL; 388 } 389 devinfo->flags = flags; 390 devinfo->compatible = compatible; 391 392 if (compatible) 393 list_add_tail(&devinfo->dev_info_list, 394 &devinfo_table->scsi_dev_info_list); 395 else 396 list_add(&devinfo->dev_info_list, 397 &devinfo_table->scsi_dev_info_list); 398 399 return 0; 400} 401EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 402 403/** 404 * scsi_dev_info_list_find - find a matching dev_info list entry. 405 * @vendor: full vendor string 406 * @model: full model (product) string 407 * @key: specify list to use 408 * 409 * Description: 410 * Finds the first dev_info entry matching @vendor, @model 411 * in list specified by @key. 412 * 413 * Returns: pointer to matching entry, or ERR_PTR on failure. 414 **/ 415static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 416 const char *model, enum scsi_devinfo_key key) 417{ 418 struct scsi_dev_info_list *devinfo; 419 struct scsi_dev_info_list_table *devinfo_table = 420 scsi_devinfo_lookup_by_key(key); 421 size_t vmax, mmax, mlen; 422 const char *vskip, *mskip; 423 424 if (IS_ERR(devinfo_table)) 425 return (struct scsi_dev_info_list *) devinfo_table; 426 427 /* Prepare for "compatible" matches */ 428 429 /* 430 * XXX why skip leading spaces? If an odd INQUIRY 431 * value, that should have been part of the 432 * scsi_static_device_list[] entry, such as " FOO" 433 * rather than "FOO". Since this code is already 434 * here, and we don't know what device it is 435 * trying to work with, leave it as-is. 436 */ 437 vmax = sizeof(devinfo->vendor); 438 vskip = vendor; 439 while (vmax > 0 && *vskip == ' ') { 440 vmax--; 441 vskip++; 442 } 443 /* Also skip trailing spaces */ 444 while (vmax > 0 && vskip[vmax - 1] == ' ') 445 --vmax; 446 447 mmax = sizeof(devinfo->model); 448 mskip = model; 449 while (mmax > 0 && *mskip == ' ') { 450 mmax--; 451 mskip++; 452 } 453 while (mmax > 0 && mskip[mmax - 1] == ' ') 454 --mmax; 455 456 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 457 dev_info_list) { 458 if (devinfo->compatible) { 459 /* 460 * vendor strings must be an exact match 461 */ 462 if (vmax != strnlen(devinfo->vendor, 463 sizeof(devinfo->vendor)) || 464 memcmp(devinfo->vendor, vskip, vmax)) 465 continue; 466 467 /* 468 * @model specifies the full string, and 469 * must be larger or equal to devinfo->model 470 */ 471 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 472 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 473 continue; 474 return devinfo; 475 } else { 476 if (!memcmp(devinfo->vendor, vendor, 477 sizeof(devinfo->vendor)) && 478 !memcmp(devinfo->model, model, 479 sizeof(devinfo->model))) 480 return devinfo; 481 } 482 } 483 484 return ERR_PTR(-ENOENT); 485} 486 487/** 488 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 489 * @vendor: vendor string 490 * @model: model (product) string 491 * @key: specify list to use 492 * 493 * Description: 494 * Remove and destroy one dev_info entry for @vendor, @model 495 * in list specified by @key. 496 * 497 * Returns: 0 OK, -error on failure. 498 **/ 499int scsi_dev_info_list_del_keyed(char *vendor, char *model, 500 enum scsi_devinfo_key key) 501{ 502 struct scsi_dev_info_list *found; 503 504 found = scsi_dev_info_list_find(vendor, model, key); 505 if (IS_ERR(found)) 506 return PTR_ERR(found); 507 508 list_del(&found->dev_info_list); 509 kfree(found); 510 return 0; 511} 512EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 513 514/** 515 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 516 * @dev_list: string of device flags to add 517 * 518 * Description: 519 * Parse dev_list, and add entries to the scsi_dev_info_list. 520 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 521 * dev_list is modified via strsep. Can be called for command line 522 * addition, for proc or mabye a sysfs interface. 523 * 524 * Returns: 0 if OK, -error on failure. 525 **/ 526static int scsi_dev_info_list_add_str(char *dev_list) 527{ 528 char *vendor, *model, *strflags, *next; 529 char *next_check; 530 int res = 0; 531 532 next = dev_list; 533 if (next && next[0] == '"') { 534 /* 535 * Ignore both the leading and trailing quote. 536 */ 537 next++; 538 next_check = ",\""; 539 } else { 540 next_check = ","; 541 } 542 543 /* 544 * For the leading and trailing '"' case, the for loop comes 545 * through the last time with vendor[0] == '\0'. 546 */ 547 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 548 && (res == 0); vendor = strsep(&next, ":")) { 549 strflags = NULL; 550 model = strsep(&next, ":"); 551 if (model) 552 strflags = strsep(&next, next_check); 553 if (!model || !strflags) { 554 pr_err("%s: bad dev info string '%s' '%s' '%s'\n", 555 __func__, vendor, model ? model : "", 556 strflags ? strflags : ""); 557 res = -EINVAL; 558 } else 559 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 560 model, strflags, 0); 561 } 562 return res; 563} 564 565/** 566 * scsi_get_device_flags - get device specific flags from the dynamic 567 * device list. 568 * @sdev: &scsi_device to get flags for 569 * @vendor: vendor name 570 * @model: model name 571 * 572 * Description: 573 * Search the global scsi_dev_info_list (specified by list zero) 574 * for an entry matching @vendor and @model, if found, return the 575 * matching flags value, else return the host or global default 576 * settings. Called during scan time. 577 **/ 578blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 579 const unsigned char *vendor, 580 const unsigned char *model) 581{ 582 return scsi_get_device_flags_keyed(sdev, vendor, model, 583 SCSI_DEVINFO_GLOBAL); 584} 585 586 587/** 588 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 589 * @sdev: &scsi_device to get flags for 590 * @vendor: vendor name 591 * @model: model name 592 * @key: list to look up 593 * 594 * Description: 595 * Search the scsi_dev_info_list specified by @key for an entry 596 * matching @vendor and @model, if found, return the matching 597 * flags value, else return the host or global default settings. 598 * Called during scan time. 599 **/ 600blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 601 const unsigned char *vendor, 602 const unsigned char *model, 603 enum scsi_devinfo_key key) 604{ 605 struct scsi_dev_info_list *devinfo; 606 607 devinfo = scsi_dev_info_list_find(vendor, model, key); 608 if (!IS_ERR(devinfo)) 609 return devinfo->flags; 610 611 /* key or device not found: return nothing */ 612 if (key != SCSI_DEVINFO_GLOBAL) 613 return 0; 614 615 /* except for the global list, where we have an exception */ 616 if (sdev->sdev_bflags) 617 return sdev->sdev_bflags; 618 619 return scsi_default_dev_flags; 620} 621EXPORT_SYMBOL(scsi_get_device_flags_keyed); 622 623#ifdef CONFIG_SCSI_PROC_FS 624struct double_list { 625 struct list_head *top; 626 struct list_head *bottom; 627}; 628 629static int devinfo_seq_show(struct seq_file *m, void *v) 630{ 631 struct double_list *dl = v; 632 struct scsi_dev_info_list_table *devinfo_table = 633 list_entry(dl->top, struct scsi_dev_info_list_table, node); 634 struct scsi_dev_info_list *devinfo = 635 list_entry(dl->bottom, struct scsi_dev_info_list, 636 dev_info_list); 637 638 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 639 devinfo_table->name) 640 seq_printf(m, "[%s]:\n", devinfo_table->name); 641 642 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 643 devinfo->vendor, devinfo->model, devinfo->flags); 644 return 0; 645} 646 647static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 648{ 649 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 650 loff_t pos = *ppos; 651 652 if (!dl) 653 return NULL; 654 655 list_for_each(dl->top, &scsi_dev_info_list) { 656 struct scsi_dev_info_list_table *devinfo_table = 657 list_entry(dl->top, struct scsi_dev_info_list_table, 658 node); 659 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 660 if (pos-- == 0) 661 return dl; 662 } 663 664 kfree(dl); 665 return NULL; 666} 667 668static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 669{ 670 struct double_list *dl = v; 671 struct scsi_dev_info_list_table *devinfo_table = 672 list_entry(dl->top, struct scsi_dev_info_list_table, node); 673 674 ++*ppos; 675 dl->bottom = dl->bottom->next; 676 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 677 dl->top = dl->top->next; 678 if (dl->top == &scsi_dev_info_list) { 679 kfree(dl); 680 return NULL; 681 } 682 devinfo_table = list_entry(dl->top, 683 struct scsi_dev_info_list_table, 684 node); 685 dl->bottom = devinfo_table->scsi_dev_info_list.next; 686 } 687 688 return dl; 689} 690 691static void devinfo_seq_stop(struct seq_file *m, void *v) 692{ 693 kfree(v); 694} 695 696static const struct seq_operations scsi_devinfo_seq_ops = { 697 .start = devinfo_seq_start, 698 .next = devinfo_seq_next, 699 .stop = devinfo_seq_stop, 700 .show = devinfo_seq_show, 701}; 702 703static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 704{ 705 return seq_open(file, &scsi_devinfo_seq_ops); 706} 707 708/* 709 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 710 * 711 * Description: Adds a black/white list entry for vendor and model with an 712 * integer value of flag to the scsi device info list. 713 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 714 */ 715static ssize_t proc_scsi_devinfo_write(struct file *file, 716 const char __user *buf, 717 size_t length, loff_t *ppos) 718{ 719 char *buffer; 720 ssize_t err = length; 721 722 if (!buf || length>PAGE_SIZE) 723 return -EINVAL; 724 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 725 return -ENOMEM; 726 if (copy_from_user(buffer, buf, length)) { 727 err =-EFAULT; 728 goto out; 729 } 730 731 if (length < PAGE_SIZE) 732 buffer[length] = '\0'; 733 else if (buffer[PAGE_SIZE-1]) { 734 err = -EINVAL; 735 goto out; 736 } 737 738 scsi_dev_info_list_add_str(buffer); 739 740out: 741 free_page((unsigned long)buffer); 742 return err; 743} 744 745static const struct proc_ops scsi_devinfo_proc_ops = { 746 .proc_open = proc_scsi_devinfo_open, 747 .proc_read = seq_read, 748 .proc_write = proc_scsi_devinfo_write, 749 .proc_lseek = seq_lseek, 750 .proc_release = seq_release, 751}; 752#endif /* CONFIG_SCSI_PROC_FS */ 753 754module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 755MODULE_PARM_DESC(dev_flags, 756 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 757 " list entries for vendor and model with an integer value of flags" 758 " to the scsi device info list"); 759 760module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 761MODULE_PARM_DESC(default_dev_flags, 762 "scsi default device flag uint64_t value"); 763 764/** 765 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 766 **/ 767void scsi_exit_devinfo(void) 768{ 769#ifdef CONFIG_SCSI_PROC_FS 770 remove_proc_entry("scsi/device_info", NULL); 771#endif 772 773 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 774} 775 776/** 777 * scsi_dev_info_add_list - add a new devinfo list 778 * @key: key of the list to add 779 * @name: Name of the list to add (for /proc/scsi/device_info) 780 * 781 * Adds the requested list, returns zero on success, -EEXIST if the 782 * key is already registered to a list, or other error on failure. 783 */ 784int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 785{ 786 struct scsi_dev_info_list_table *devinfo_table = 787 scsi_devinfo_lookup_by_key(key); 788 789 if (!IS_ERR(devinfo_table)) 790 /* list already exists */ 791 return -EEXIST; 792 793 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 794 795 if (!devinfo_table) 796 return -ENOMEM; 797 798 INIT_LIST_HEAD(&devinfo_table->node); 799 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 800 devinfo_table->name = name; 801 devinfo_table->key = key; 802 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 803 804 return 0; 805} 806EXPORT_SYMBOL(scsi_dev_info_add_list); 807 808/** 809 * scsi_dev_info_remove_list - destroy an added devinfo list 810 * @key: key of the list to destroy 811 * 812 * Iterates over the entire list first, freeing all the values, then 813 * frees the list itself. Returns 0 on success or -EINVAL if the key 814 * can't be found. 815 */ 816int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 817{ 818 struct list_head *lh, *lh_next; 819 struct scsi_dev_info_list_table *devinfo_table = 820 scsi_devinfo_lookup_by_key(key); 821 822 if (IS_ERR(devinfo_table)) 823 /* no such list */ 824 return -EINVAL; 825 826 /* remove from the master list */ 827 list_del(&devinfo_table->node); 828 829 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 830 struct scsi_dev_info_list *devinfo; 831 832 devinfo = list_entry(lh, struct scsi_dev_info_list, 833 dev_info_list); 834 kfree(devinfo); 835 } 836 kfree(devinfo_table); 837 838 return 0; 839} 840EXPORT_SYMBOL(scsi_dev_info_remove_list); 841 842/** 843 * scsi_init_devinfo - set up the dynamic device list. 844 * 845 * Description: 846 * Add command line entries from scsi_dev_flags, then add 847 * scsi_static_device_list entries to the scsi device info list. 848 */ 849int __init scsi_init_devinfo(void) 850{ 851#ifdef CONFIG_SCSI_PROC_FS 852 struct proc_dir_entry *p; 853#endif 854 int error, i; 855 856 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 857 if (error) 858 return error; 859 860 error = scsi_dev_info_list_add_str(scsi_dev_flags); 861 if (error) 862 goto out; 863 864 for (i = 0; scsi_static_device_list[i].vendor; i++) { 865 error = scsi_dev_info_list_add(1 /* compatibile */, 866 scsi_static_device_list[i].vendor, 867 scsi_static_device_list[i].model, 868 NULL, 869 scsi_static_device_list[i].flags); 870 if (error) 871 goto out; 872 } 873 874#ifdef CONFIG_SCSI_PROC_FS 875 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops); 876 if (!p) { 877 error = -ENOMEM; 878 goto out; 879 } 880#endif /* CONFIG_SCSI_PROC_FS */ 881 882 out: 883 if (error) 884 scsi_exit_devinfo(); 885 return error; 886} 887