/drivers/scsi/scsi_devinfo.c
C | 880 lines | 598 code | 86 blank | 196 comment | 76 complexity | cf5947b0a80889c0c9bbee7af7ef3e4f MD5 | raw file
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}, 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 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, 175 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, 176 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 177 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, 178 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 179 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ 180 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */ 181 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, 182 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, 183 {"HP", "C1557A", NULL, BLIST_FORCELUN}, 184 {"HP", "C3323-300", "4269", BLIST_NOTQ}, 185 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, 186 {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, 187 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 188 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 189 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 190 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 191 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 192 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 193 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 194 {"INSITE", "I325VM", NULL, BLIST_KEY}, 195 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 196 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 197 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 198 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 199 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 200 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 201 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 202 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 203 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 204 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 205 {"MICROP", "4110", NULL, BLIST_NOTQ}, 206 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC}, 207 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 208 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 209 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 210 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 211 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 212 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 213 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 215 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 216 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 220 {"Promise", "", NULL, BLIST_SPARSELUN}, 221 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 222 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 223 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 224 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 225 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 226 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 227 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 228 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 229 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 230 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 231 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 232 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 233 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 234 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 235 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 236 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 237 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 242 {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES | 243 BLIST_INQUIRY_36}, 244 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 245 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 246 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 247 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 248 {"SUN", "T300", "*", BLIST_SPARSELUN}, 249 {"SUN", "T4", "*", BLIST_SPARSELUN}, 250 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 251 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 252 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 253 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 254 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 255 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 256 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 257 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 258 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 259 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 260 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 261 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 262 { NULL, NULL, NULL, 0 }, 263}; 264 265static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 266{ 267 struct scsi_dev_info_list_table *devinfo_table; 268 int found = 0; 269 270 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 271 if (devinfo_table->key == key) { 272 found = 1; 273 break; 274 } 275 if (!found) 276 return ERR_PTR(-EINVAL); 277 278 return devinfo_table; 279} 280 281/* 282 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 283 * devinfo vendor and model strings. 284 */ 285static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 286 char *from, int compatible) 287{ 288 size_t from_length; 289 290 from_length = strlen(from); 291 /* This zero-pads the destination */ 292 strncpy(to, from, to_length); 293 if (from_length < to_length && !compatible) { 294 /* 295 * space pad the string if it is short. 296 */ 297 memset(&to[from_length], ' ', to_length - from_length); 298 } 299 if (from_length > to_length) 300 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 301 __func__, name, from); 302} 303 304/** 305 * scsi_dev_info_list_add - add one dev_info list entry. 306 * @compatible: if true, null terminate short strings. Otherwise space pad. 307 * @vendor: vendor string 308 * @model: model (product) string 309 * @strflags: integer string 310 * @flags: if strflags NULL, use this flag value 311 * 312 * Description: 313 * Create and add one dev_info entry for @vendor, @model, @strflags or 314 * @flag. If @compatible, add to the tail of the list, do not space 315 * pad, and set devinfo->compatible. The scsi_static_device_list entries 316 * are added with @compatible 1 and @clfags NULL. 317 * 318 * Returns: 0 OK, -error on failure. 319 **/ 320static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 321 char *strflags, blist_flags_t flags) 322{ 323 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 324 strflags, flags, 325 SCSI_DEVINFO_GLOBAL); 326} 327 328/** 329 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 330 * @compatible: if true, null terminate short strings. Otherwise space pad. 331 * @vendor: vendor string 332 * @model: model (product) string 333 * @strflags: integer string 334 * @flags: if strflags NULL, use this flag value 335 * @key: specify list to use 336 * 337 * Description: 338 * Create and add one dev_info entry for @vendor, @model, 339 * @strflags or @flag in list specified by @key. If @compatible, 340 * add to the tail of the list, do not space pad, and set 341 * devinfo->compatible. The scsi_static_device_list entries are 342 * added with @compatible 1 and @clfags NULL. 343 * 344 * Returns: 0 OK, -error on failure. 345 **/ 346int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 347 char *strflags, blist_flags_t flags, 348 enum scsi_devinfo_key key) 349{ 350 struct scsi_dev_info_list *devinfo; 351 struct scsi_dev_info_list_table *devinfo_table = 352 scsi_devinfo_lookup_by_key(key); 353 354 if (IS_ERR(devinfo_table)) 355 return PTR_ERR(devinfo_table); 356 357 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 358 if (!devinfo) { 359 printk(KERN_ERR "%s: no memory\n", __func__); 360 return -ENOMEM; 361 } 362 363 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 364 vendor, compatible); 365 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 366 model, compatible); 367 368 if (strflags) { 369 unsigned long long val; 370 int ret = kstrtoull(strflags, 0, &val); 371 372 if (ret != 0) { 373 kfree(devinfo); 374 return ret; 375 } 376 flags = (__force blist_flags_t)val; 377 } 378 if (flags & __BLIST_UNUSED_MASK) { 379 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 380 vendor, model, flags & __BLIST_UNUSED_MASK); 381 kfree(devinfo); 382 return -EINVAL; 383 } 384 devinfo->flags = flags; 385 devinfo->compatible = compatible; 386 387 if (compatible) 388 list_add_tail(&devinfo->dev_info_list, 389 &devinfo_table->scsi_dev_info_list); 390 else 391 list_add(&devinfo->dev_info_list, 392 &devinfo_table->scsi_dev_info_list); 393 394 return 0; 395} 396EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 397 398/** 399 * scsi_dev_info_list_find - find a matching dev_info list entry. 400 * @vendor: full vendor string 401 * @model: full model (product) string 402 * @key: specify list to use 403 * 404 * Description: 405 * Finds the first dev_info entry matching @vendor, @model 406 * in list specified by @key. 407 * 408 * Returns: pointer to matching entry, or ERR_PTR on failure. 409 **/ 410static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 411 const char *model, enum scsi_devinfo_key key) 412{ 413 struct scsi_dev_info_list *devinfo; 414 struct scsi_dev_info_list_table *devinfo_table = 415 scsi_devinfo_lookup_by_key(key); 416 size_t vmax, mmax, mlen; 417 const char *vskip, *mskip; 418 419 if (IS_ERR(devinfo_table)) 420 return (struct scsi_dev_info_list *) devinfo_table; 421 422 /* Prepare for "compatible" matches */ 423 424 /* 425 * XXX why skip leading spaces? If an odd INQUIRY 426 * value, that should have been part of the 427 * scsi_static_device_list[] entry, such as " FOO" 428 * rather than "FOO". Since this code is already 429 * here, and we don't know what device it is 430 * trying to work with, leave it as-is. 431 */ 432 vmax = sizeof(devinfo->vendor); 433 vskip = vendor; 434 while (vmax > 0 && *vskip == ' ') { 435 vmax--; 436 vskip++; 437 } 438 /* Also skip trailing spaces */ 439 while (vmax > 0 && vskip[vmax - 1] == ' ') 440 --vmax; 441 442 mmax = sizeof(devinfo->model); 443 mskip = model; 444 while (mmax > 0 && *mskip == ' ') { 445 mmax--; 446 mskip++; 447 } 448 while (mmax > 0 && mskip[mmax - 1] == ' ') 449 --mmax; 450 451 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 452 dev_info_list) { 453 if (devinfo->compatible) { 454 /* 455 * vendor strings must be an exact match 456 */ 457 if (vmax != strnlen(devinfo->vendor, 458 sizeof(devinfo->vendor)) || 459 memcmp(devinfo->vendor, vskip, vmax)) 460 continue; 461 462 /* 463 * @model specifies the full string, and 464 * must be larger or equal to devinfo->model 465 */ 466 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 467 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 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 **/ 494int scsi_dev_info_list_del_keyed(char *vendor, char *model, 495 enum scsi_devinfo_key key) 496{ 497 struct scsi_dev_info_list *found; 498 499 found = scsi_dev_info_list_find(vendor, model, key); 500 if (IS_ERR(found)) 501 return PTR_ERR(found); 502 503 list_del(&found->dev_info_list); 504 kfree(found); 505 return 0; 506} 507EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 508 509/** 510 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 511 * @dev_list: string of device flags to add 512 * 513 * Description: 514 * Parse dev_list, and add entries to the scsi_dev_info_list. 515 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 516 * dev_list is modified via strsep. Can be called for command line 517 * addition, for proc or mabye a sysfs interface. 518 * 519 * Returns: 0 if OK, -error on failure. 520 **/ 521static int scsi_dev_info_list_add_str(char *dev_list) 522{ 523 char *vendor, *model, *strflags, *next; 524 char *next_check; 525 int res = 0; 526 527 next = dev_list; 528 if (next && next[0] == '"') { 529 /* 530 * Ignore both the leading and trailing quote. 531 */ 532 next++; 533 next_check = ",\""; 534 } else { 535 next_check = ","; 536 } 537 538 /* 539 * For the leading and trailing '"' case, the for loop comes 540 * through the last time with vendor[0] == '\0'. 541 */ 542 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 543 && (res == 0); vendor = strsep(&next, ":")) { 544 strflags = NULL; 545 model = strsep(&next, ":"); 546 if (model) 547 strflags = strsep(&next, next_check); 548 if (!model || !strflags) { 549 printk(KERN_ERR "%s: bad dev info string '%s' '%s'" 550 " '%s'\n", __func__, vendor, model, 551 strflags); 552 res = -EINVAL; 553 } else 554 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 555 model, strflags, 0); 556 } 557 return res; 558} 559 560/** 561 * get_device_flags - get device specific flags from the dynamic device list. 562 * @sdev: &scsi_device to get flags for 563 * @vendor: vendor name 564 * @model: model name 565 * 566 * Description: 567 * Search the global scsi_dev_info_list (specified by list zero) 568 * for an entry matching @vendor and @model, if found, return the 569 * matching flags value, else return the host or global default 570 * settings. Called during scan time. 571 **/ 572blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 573 const unsigned char *vendor, 574 const unsigned char *model) 575{ 576 return scsi_get_device_flags_keyed(sdev, vendor, model, 577 SCSI_DEVINFO_GLOBAL); 578} 579 580 581/** 582 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 583 * @sdev: &scsi_device to get flags for 584 * @vendor: vendor name 585 * @model: model name 586 * @key: list to look up 587 * 588 * Description: 589 * Search the scsi_dev_info_list specified by @key for an entry 590 * matching @vendor and @model, if found, return the matching 591 * flags value, else return the host or global default settings. 592 * Called during scan time. 593 **/ 594blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 595 const unsigned char *vendor, 596 const unsigned char *model, 597 enum scsi_devinfo_key key) 598{ 599 struct scsi_dev_info_list *devinfo; 600 601 devinfo = scsi_dev_info_list_find(vendor, model, key); 602 if (!IS_ERR(devinfo)) 603 return devinfo->flags; 604 605 /* key or device not found: return nothing */ 606 if (key != SCSI_DEVINFO_GLOBAL) 607 return 0; 608 609 /* except for the global list, where we have an exception */ 610 if (sdev->sdev_bflags) 611 return sdev->sdev_bflags; 612 613 return scsi_default_dev_flags; 614} 615EXPORT_SYMBOL(scsi_get_device_flags_keyed); 616 617#ifdef CONFIG_SCSI_PROC_FS 618struct double_list { 619 struct list_head *top; 620 struct list_head *bottom; 621}; 622 623static int devinfo_seq_show(struct seq_file *m, void *v) 624{ 625 struct double_list *dl = v; 626 struct scsi_dev_info_list_table *devinfo_table = 627 list_entry(dl->top, struct scsi_dev_info_list_table, node); 628 struct scsi_dev_info_list *devinfo = 629 list_entry(dl->bottom, struct scsi_dev_info_list, 630 dev_info_list); 631 632 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 633 devinfo_table->name) 634 seq_printf(m, "[%s]:\n", devinfo_table->name); 635 636 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 637 devinfo->vendor, devinfo->model, devinfo->flags); 638 return 0; 639} 640 641static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 642{ 643 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 644 loff_t pos = *ppos; 645 646 if (!dl) 647 return NULL; 648 649 list_for_each(dl->top, &scsi_dev_info_list) { 650 struct scsi_dev_info_list_table *devinfo_table = 651 list_entry(dl->top, struct scsi_dev_info_list_table, 652 node); 653 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 654 if (pos-- == 0) 655 return dl; 656 } 657 658 kfree(dl); 659 return NULL; 660} 661 662static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 663{ 664 struct double_list *dl = v; 665 struct scsi_dev_info_list_table *devinfo_table = 666 list_entry(dl->top, struct scsi_dev_info_list_table, node); 667 668 ++*ppos; 669 dl->bottom = dl->bottom->next; 670 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 671 dl->top = dl->top->next; 672 if (dl->top == &scsi_dev_info_list) { 673 kfree(dl); 674 return NULL; 675 } 676 devinfo_table = list_entry(dl->top, 677 struct scsi_dev_info_list_table, 678 node); 679 dl->bottom = devinfo_table->scsi_dev_info_list.next; 680 } 681 682 return dl; 683} 684 685static void devinfo_seq_stop(struct seq_file *m, void *v) 686{ 687 kfree(v); 688} 689 690static const struct seq_operations scsi_devinfo_seq_ops = { 691 .start = devinfo_seq_start, 692 .next = devinfo_seq_next, 693 .stop = devinfo_seq_stop, 694 .show = devinfo_seq_show, 695}; 696 697static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 698{ 699 return seq_open(file, &scsi_devinfo_seq_ops); 700} 701 702/* 703 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 704 * 705 * Description: Adds a black/white list entry for vendor and model with an 706 * integer value of flag to the scsi device info list. 707 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 708 */ 709static ssize_t proc_scsi_devinfo_write(struct file *file, 710 const char __user *buf, 711 size_t length, loff_t *ppos) 712{ 713 char *buffer; 714 ssize_t err = length; 715 716 if (!buf || length>PAGE_SIZE) 717 return -EINVAL; 718 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 719 return -ENOMEM; 720 if (copy_from_user(buffer, buf, length)) { 721 err =-EFAULT; 722 goto out; 723 } 724 725 if (length < PAGE_SIZE) 726 buffer[length] = '\0'; 727 else if (buffer[PAGE_SIZE-1]) { 728 err = -EINVAL; 729 goto out; 730 } 731 732 scsi_dev_info_list_add_str(buffer); 733 734out: 735 free_page((unsigned long)buffer); 736 return err; 737} 738 739static const struct proc_ops scsi_devinfo_proc_ops = { 740 .proc_open = proc_scsi_devinfo_open, 741 .proc_read = seq_read, 742 .proc_write = proc_scsi_devinfo_write, 743 .proc_lseek = seq_lseek, 744 .proc_release = seq_release, 745}; 746#endif /* CONFIG_SCSI_PROC_FS */ 747 748module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 749MODULE_PARM_DESC(dev_flags, 750 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 751 " list entries for vendor and model with an integer value of flags" 752 " to the scsi device info list"); 753 754module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 755MODULE_PARM_DESC(default_dev_flags, 756 "scsi default device flag uint64_t value"); 757 758/** 759 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 760 **/ 761void scsi_exit_devinfo(void) 762{ 763#ifdef CONFIG_SCSI_PROC_FS 764 remove_proc_entry("scsi/device_info", NULL); 765#endif 766 767 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 768} 769 770/** 771 * scsi_dev_info_add_list - add a new devinfo list 772 * @key: key of the list to add 773 * @name: Name of the list to add (for /proc/scsi/device_info) 774 * 775 * Adds the requested list, returns zero on success, -EEXIST if the 776 * key is already registered to a list, or other error on failure. 777 */ 778int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 779{ 780 struct scsi_dev_info_list_table *devinfo_table = 781 scsi_devinfo_lookup_by_key(key); 782 783 if (!IS_ERR(devinfo_table)) 784 /* list already exists */ 785 return -EEXIST; 786 787 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 788 789 if (!devinfo_table) 790 return -ENOMEM; 791 792 INIT_LIST_HEAD(&devinfo_table->node); 793 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 794 devinfo_table->name = name; 795 devinfo_table->key = key; 796 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 797 798 return 0; 799} 800EXPORT_SYMBOL(scsi_dev_info_add_list); 801 802/** 803 * scsi_dev_info_remove_list - destroy an added devinfo list 804 * @key: key of the list to destroy 805 * 806 * Iterates over the entire list first, freeing all the values, then 807 * frees the list itself. Returns 0 on success or -EINVAL if the key 808 * can't be found. 809 */ 810int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 811{ 812 struct list_head *lh, *lh_next; 813 struct scsi_dev_info_list_table *devinfo_table = 814 scsi_devinfo_lookup_by_key(key); 815 816 if (IS_ERR(devinfo_table)) 817 /* no such list */ 818 return -EINVAL; 819 820 /* remove from the master list */ 821 list_del(&devinfo_table->node); 822 823 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 824 struct scsi_dev_info_list *devinfo; 825 826 devinfo = list_entry(lh, struct scsi_dev_info_list, 827 dev_info_list); 828 kfree(devinfo); 829 } 830 kfree(devinfo_table); 831 832 return 0; 833} 834EXPORT_SYMBOL(scsi_dev_info_remove_list); 835 836/** 837 * scsi_init_devinfo - set up the dynamic device list. 838 * 839 * Description: 840 * Add command line entries from scsi_dev_flags, then add 841 * scsi_static_device_list entries to the scsi device info list. 842 */ 843int __init scsi_init_devinfo(void) 844{ 845#ifdef CONFIG_SCSI_PROC_FS 846 struct proc_dir_entry *p; 847#endif 848 int error, i; 849 850 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 851 if (error) 852 return error; 853 854 error = scsi_dev_info_list_add_str(scsi_dev_flags); 855 if (error) 856 goto out; 857 858 for (i = 0; scsi_static_device_list[i].vendor; i++) { 859 error = scsi_dev_info_list_add(1 /* compatibile */, 860 scsi_static_device_list[i].vendor, 861 scsi_static_device_list[i].model, 862 NULL, 863 scsi_static_device_list[i].flags); 864 if (error) 865 goto out; 866 } 867 868#ifdef CONFIG_SCSI_PROC_FS 869 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops); 870 if (!p) { 871 error = -ENOMEM; 872 goto out; 873 } 874#endif /* CONFIG_SCSI_PROC_FS */ 875 876 out: 877 if (error) 878 scsi_exit_devinfo(); 879 return error; 880}