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 */ 21 struct 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 29 struct 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 37 static blist_flags_t 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: list of devices that require settings that differ 43 * from the default, includes black-listed (broken) devices. The entries here 44 * are added to the tail of scsi_dev_info_list via scsi_dev_info_list_init. 45 * 46 * If possible, set the BLIST_* flags from inside a SCSI LLD rather than 47 * adding an entry to this list. 48 */ 49 static struct { 50 char *vendor; 51 char *model; 52 char *revision; /* revision known to be bad, unused */ 53 blist_flags_t flags; 54 } scsi_static_device_list[] __initdata = { 55 /* 56 * The following devices are known not to tolerate a lun != 0 scan 57 * for one reason or another. Some will respond to all luns, 58 * others will lock up. 59 */ 60 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ 61 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ 62 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ 63 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ 64 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ 65 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ 66 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */ 67 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */ 68 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ 69 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ 70 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ 71 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ 72 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ 73 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ 74 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ 75 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ 76 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ 77 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ 78 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ 79 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ 80 /* 81 * The following causes a failed REQUEST SENSE on lun 1 for 82 * aha152x controller, which causes SCSI code to reset bus. 83 */ 84 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, 85 /* 86 * The following causes a failed REQUEST SENSE on lun 1 for 87 * aha152x controller, which causes SCSI code to reset bus. 88 */ 89 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, 90 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ 91 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ 92 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, 93 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, 94 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, 95 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, 96 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, 97 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ 98 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ 99 /* 100 * The following causes a failed REQUEST SENSE on lun 1 for 101 * seagate controller, which causes SCSI code to reset bus. 102 */ 103 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, 104 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ 105 /* 106 * The following causes a failed REQUEST SENSE on lun 1 for 107 * seagate controller, which causes SCSI code to reset bus. 108 */ 109 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ 110 {"HP", "C1790A", NULL, BLIST_NOLUN}, /* scanjet iip */ 111 {"HP", "C2500A", NULL, BLIST_NOLUN}, /* scanjet iicx */ 112 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ 113 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ 114 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ 115 {"NEC", "D3856", "0009", BLIST_NOLUN}, 116 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ 117 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ 118 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ 119 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ 120 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ 121 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN | BLIST_BORKEN}, 122 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, 123 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ 124 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ 125 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ 126 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ 127 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ 128 129 /* 130 * Other types of devices that have special flags. 131 * Note that all USB devices should have the BLIST_INQUIRY_36 flag. 132 */ 133 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, 134 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, 135 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, 136 {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES | BLIST_NO_VPD_SIZE}, 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}, /* EMC CLARiiON, storage on LUN 0 */ 161 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */ 162 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 163 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | 164 BLIST_REPORTLUN2 | BLIST_RETRY_ITF}, 165 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, 166 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, 167 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, 168 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, 169 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 170 {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1}, 171 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, 172 {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */ 173 {"Generic", "Ultra HS-SD/MMC", "2.09", BLIST_IGN_MEDIA_CHANGE | BLIST_INQUIRY_36}, 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 {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, 188 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, 189 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 190 {"IBM", "2076", NULL, BLIST_NO_VPD_SIZE}, 191 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, 192 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, 193 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, 194 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, 195 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, 196 {"INSITE", "I325VM", NULL, BLIST_KEY}, 197 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC}, 198 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 199 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, 200 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES}, 201 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES}, 202 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 203 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 204 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, 205 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, 206 {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, 207 {"MICROP", "4110", NULL, BLIST_NOTQ}, 208 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC}, 209 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, 210 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, 211 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 212 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 213 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 214 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, 215 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 216 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 217 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 218 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 219 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 220 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, 221 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, 222 {"Promise", "", NULL, BLIST_SPARSELUN}, 223 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES}, 224 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, 225 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024}, 226 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, 227 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, 228 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, 229 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ 230 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, 231 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, 232 {"SGI", "RAID3", "*", BLIST_SPARSELUN}, 233 {"SGI", "RAID5", "*", BLIST_SPARSELUN}, 234 {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, 235 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 236 {"SKhynix", "H28U74301AMR", NULL, BLIST_SKIP_VPD_PAGES}, 237 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 238 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 239 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 240 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 241 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 242 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 243 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 244 {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 245 {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, 246 {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES | 247 BLIST_INQUIRY_36}, 248 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, 249 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, 250 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ 251 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, 252 {"SUN", "T300", "*", BLIST_SPARSELUN}, 253 {"SUN", "T4", "*", BLIST_SPARSELUN}, 254 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, 255 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, 256 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, 257 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ 258 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, 259 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, 260 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, 261 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, 262 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, 263 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, 264 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, 265 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, 266 { NULL, NULL, NULL, 0 }, 267 }; 268 scsi_devinfo_lookup_by_key(int key)269 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 270 { 271 struct scsi_dev_info_list_table *devinfo_table; 272 int found = 0; 273 274 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 275 if (devinfo_table->key == key) { 276 found = 1; 277 break; 278 } 279 if (!found) 280 return ERR_PTR(-EINVAL); 281 282 return devinfo_table; 283 } 284 285 /* 286 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 287 * devinfo vendor and model strings. 288 */ scsi_strcpy_devinfo(char * name,char * to,size_t to_length,char * from,int compatible)289 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 290 char *from, int compatible) 291 { 292 size_t from_length; 293 294 from_length = strlen(from); 295 296 /* 297 * null pad and null terminate if compatible 298 * otherwise space pad 299 */ 300 if (compatible) 301 strscpy_pad(to, from, to_length); 302 else 303 memcpy_and_pad(to, to_length, from, from_length, ' '); 304 305 if (from_length > to_length) 306 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 307 __func__, name, from); 308 } 309 310 /** 311 * scsi_dev_info_list_add - add one dev_info list entry. 312 * @compatible: if true, null terminate short strings. Otherwise space pad. 313 * @vendor: vendor string 314 * @model: model (product) string 315 * @strflags: integer string 316 * @flags: if strflags NULL, use this flag value 317 * 318 * Description: 319 * Create and add one dev_info entry for @vendor, @model, @strflags or 320 * @flag. If @compatible, add to the tail of the list, do not space 321 * pad, and set devinfo->compatible. The scsi_static_device_list entries 322 * are added with @compatible 1 and @clfags NULL. 323 * 324 * Returns: 0 OK, -error on failure. 325 **/ scsi_dev_info_list_add(int compatible,char * vendor,char * model,char * strflags,blist_flags_t flags)326 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 327 char *strflags, blist_flags_t flags) 328 { 329 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 330 strflags, flags, 331 SCSI_DEVINFO_GLOBAL); 332 } 333 334 /** 335 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 336 * @compatible: if true, null terminate short strings. Otherwise space pad. 337 * @vendor: vendor string 338 * @model: model (product) string 339 * @strflags: integer string 340 * @flags: if strflags NULL, use this flag value 341 * @key: specify list to use 342 * 343 * Description: 344 * Create and add one dev_info entry for @vendor, @model, 345 * @strflags or @flag in list specified by @key. If @compatible, 346 * add to the tail of the list, do not space pad, and set 347 * devinfo->compatible. The scsi_static_device_list entries are 348 * added with @compatible 1 and @clfags NULL. 349 * 350 * Returns: 0 OK, -error on failure. 351 **/ scsi_dev_info_list_add_keyed(int compatible,char * vendor,char * model,char * strflags,blist_flags_t flags,enum scsi_devinfo_key key)352 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 353 char *strflags, blist_flags_t flags, 354 enum scsi_devinfo_key key) 355 { 356 struct scsi_dev_info_list *devinfo; 357 struct scsi_dev_info_list_table *devinfo_table = 358 scsi_devinfo_lookup_by_key(key); 359 360 if (IS_ERR(devinfo_table)) 361 return PTR_ERR(devinfo_table); 362 363 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 364 if (!devinfo) { 365 printk(KERN_ERR "%s: no memory\n", __func__); 366 return -ENOMEM; 367 } 368 369 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 370 vendor, compatible); 371 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 372 model, compatible); 373 374 if (strflags) { 375 unsigned long long val; 376 int ret = kstrtoull(strflags, 0, &val); 377 378 if (ret != 0) { 379 kfree(devinfo); 380 return ret; 381 } 382 flags = (__force blist_flags_t)val; 383 } 384 if (flags & __BLIST_UNUSED_MASK) { 385 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 386 vendor, model, flags & __BLIST_UNUSED_MASK); 387 kfree(devinfo); 388 return -EINVAL; 389 } 390 devinfo->flags = flags; 391 devinfo->compatible = compatible; 392 393 if (compatible) 394 list_add_tail(&devinfo->dev_info_list, 395 &devinfo_table->scsi_dev_info_list); 396 else 397 list_add(&devinfo->dev_info_list, 398 &devinfo_table->scsi_dev_info_list); 399 400 return 0; 401 } 402 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 403 404 /** 405 * scsi_dev_info_list_find - find a matching dev_info list entry. 406 * @vendor: full vendor string 407 * @model: full model (product) string 408 * @key: specify list to use 409 * 410 * Description: 411 * Finds the first dev_info entry matching @vendor, @model 412 * in list specified by @key. 413 * 414 * Returns: pointer to matching entry, or ERR_PTR on failure. 415 **/ scsi_dev_info_list_find(const char * vendor,const char * model,enum scsi_devinfo_key key)416 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 417 const char *model, enum scsi_devinfo_key key) 418 { 419 struct scsi_dev_info_list *devinfo; 420 struct scsi_dev_info_list_table *devinfo_table = 421 scsi_devinfo_lookup_by_key(key); 422 size_t vmax, mmax, mlen; 423 const char *vskip, *mskip; 424 425 if (IS_ERR(devinfo_table)) 426 return (struct scsi_dev_info_list *) devinfo_table; 427 428 /* Prepare for "compatible" matches */ 429 430 /* 431 * XXX why skip leading spaces? If an odd INQUIRY 432 * value, that should have been part of the 433 * scsi_static_device_list[] entry, such as " FOO" 434 * rather than "FOO". Since this code is already 435 * here, and we don't know what device it is 436 * trying to work with, leave it as-is. 437 */ 438 vmax = sizeof(devinfo->vendor); 439 vskip = vendor; 440 while (vmax > 0 && *vskip == ' ') { 441 vmax--; 442 vskip++; 443 } 444 /* Also skip trailing spaces */ 445 while (vmax > 0 && vskip[vmax - 1] == ' ') 446 --vmax; 447 448 mmax = sizeof(devinfo->model); 449 mskip = model; 450 while (mmax > 0 && *mskip == ' ') { 451 mmax--; 452 mskip++; 453 } 454 while (mmax > 0 && mskip[mmax - 1] == ' ') 455 --mmax; 456 457 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 458 dev_info_list) { 459 if (devinfo->compatible) { 460 /* 461 * vendor strings must be an exact match 462 */ 463 if (vmax != strnlen(devinfo->vendor, 464 sizeof(devinfo->vendor)) || 465 memcmp(devinfo->vendor, vskip, vmax)) 466 continue; 467 468 /* 469 * @model specifies the full string, and 470 * must be larger or equal to devinfo->model 471 */ 472 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 473 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 474 continue; 475 return devinfo; 476 } else { 477 if (!memcmp(devinfo->vendor, vendor, 478 sizeof(devinfo->vendor)) && 479 !memcmp(devinfo->model, model, 480 sizeof(devinfo->model))) 481 return devinfo; 482 } 483 } 484 485 return ERR_PTR(-ENOENT); 486 } 487 488 /** 489 * scsi_dev_info_list_del_keyed - remove one dev_info list entry. 490 * @vendor: vendor string 491 * @model: model (product) string 492 * @key: specify list to use 493 * 494 * Description: 495 * Remove and destroy one dev_info entry for @vendor, @model 496 * in list specified by @key. 497 * 498 * Returns: 0 OK, -error on failure. 499 **/ scsi_dev_info_list_del_keyed(char * vendor,char * model,enum scsi_devinfo_key key)500 int scsi_dev_info_list_del_keyed(char *vendor, char *model, 501 enum scsi_devinfo_key key) 502 { 503 struct scsi_dev_info_list *found; 504 505 found = scsi_dev_info_list_find(vendor, model, key); 506 if (IS_ERR(found)) 507 return PTR_ERR(found); 508 509 list_del(&found->dev_info_list); 510 kfree(found); 511 return 0; 512 } 513 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); 514 515 /** 516 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 517 * @dev_list: string of device flags to add 518 * 519 * Description: 520 * Parse dev_list, and add entries to the scsi_dev_info_list. 521 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 522 * dev_list is modified via strsep. Can be called for command line 523 * addition, for proc or mabye a sysfs interface. 524 * 525 * Returns: 0 if OK, -error on failure. 526 **/ scsi_dev_info_list_add_str(char * dev_list)527 static int scsi_dev_info_list_add_str(char *dev_list) 528 { 529 char *vendor, *model, *strflags, *next; 530 char *next_check; 531 int res = 0; 532 533 next = dev_list; 534 if (next && next[0] == '"') { 535 /* 536 * Ignore both the leading and trailing quote. 537 */ 538 next++; 539 next_check = ",\""; 540 } else { 541 next_check = ","; 542 } 543 544 /* 545 * For the leading and trailing '"' case, the for loop comes 546 * through the last time with vendor[0] == '\0'. 547 */ 548 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 549 && (res == 0); vendor = strsep(&next, ":")) { 550 strflags = NULL; 551 model = strsep(&next, ":"); 552 if (model) 553 strflags = strsep(&next, next_check); 554 if (!model || !strflags) { 555 pr_err("%s: bad dev info string '%s' '%s' '%s'\n", 556 __func__, vendor, model ? model : "", 557 strflags ? strflags : ""); 558 res = -EINVAL; 559 } else 560 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 561 model, strflags, 0); 562 } 563 return res; 564 } 565 566 /** 567 * scsi_get_device_flags - get device specific flags from the dynamic 568 * device list. 569 * @sdev: &scsi_device to get flags for 570 * @vendor: vendor name 571 * @model: model name 572 * 573 * Description: 574 * Search the global scsi_dev_info_list (specified by list zero) 575 * for an entry matching @vendor and @model, if found, return the 576 * matching flags value, else return the host or global default 577 * settings. Called during scan time. 578 **/ scsi_get_device_flags(struct scsi_device * sdev,const unsigned char * vendor,const unsigned char * model)579 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 580 const unsigned char *vendor, 581 const unsigned char *model) 582 { 583 return scsi_get_device_flags_keyed(sdev, vendor, model, 584 SCSI_DEVINFO_GLOBAL); 585 } 586 587 588 /** 589 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 590 * @sdev: &scsi_device to get flags for 591 * @vendor: vendor name 592 * @model: model name 593 * @key: list to look up 594 * 595 * Description: 596 * Search the scsi_dev_info_list specified by @key for an entry 597 * matching @vendor and @model, if found, return the matching 598 * flags value, else return the host or global default settings. 599 * Called during scan time. 600 **/ scsi_get_device_flags_keyed(struct scsi_device * sdev,const unsigned char * vendor,const unsigned char * model,enum scsi_devinfo_key key)601 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 602 const unsigned char *vendor, 603 const unsigned char *model, 604 enum scsi_devinfo_key key) 605 { 606 struct scsi_dev_info_list *devinfo; 607 608 devinfo = scsi_dev_info_list_find(vendor, model, key); 609 if (!IS_ERR(devinfo)) 610 return devinfo->flags; 611 612 /* key or device not found: return nothing */ 613 if (key != SCSI_DEVINFO_GLOBAL) 614 return 0; 615 616 /* except for the global list, where we have an exception */ 617 if (sdev->sdev_bflags) 618 return sdev->sdev_bflags; 619 620 return scsi_default_dev_flags; 621 } 622 EXPORT_SYMBOL(scsi_get_device_flags_keyed); 623 624 #ifdef CONFIG_SCSI_PROC_FS 625 struct double_list { 626 struct list_head *top; 627 struct list_head *bottom; 628 }; 629 devinfo_seq_show(struct seq_file * m,void * v)630 static int devinfo_seq_show(struct seq_file *m, void *v) 631 { 632 struct double_list *dl = v; 633 struct scsi_dev_info_list_table *devinfo_table = 634 list_entry(dl->top, struct scsi_dev_info_list_table, node); 635 struct scsi_dev_info_list *devinfo = 636 list_entry(dl->bottom, struct scsi_dev_info_list, 637 dev_info_list); 638 639 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 640 devinfo_table->name) 641 seq_printf(m, "[%s]:\n", devinfo_table->name); 642 643 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 644 devinfo->vendor, devinfo->model, devinfo->flags); 645 return 0; 646 } 647 devinfo_seq_start(struct seq_file * m,loff_t * ppos)648 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 649 { 650 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 651 loff_t pos = *ppos; 652 653 if (!dl) 654 return NULL; 655 656 list_for_each(dl->top, &scsi_dev_info_list) { 657 struct scsi_dev_info_list_table *devinfo_table = 658 list_entry(dl->top, struct scsi_dev_info_list_table, 659 node); 660 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 661 if (pos-- == 0) 662 return dl; 663 } 664 665 kfree(dl); 666 return NULL; 667 } 668 devinfo_seq_next(struct seq_file * m,void * v,loff_t * ppos)669 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 670 { 671 struct double_list *dl = v; 672 struct scsi_dev_info_list_table *devinfo_table = 673 list_entry(dl->top, struct scsi_dev_info_list_table, node); 674 675 ++*ppos; 676 dl->bottom = dl->bottom->next; 677 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 678 dl->top = dl->top->next; 679 if (dl->top == &scsi_dev_info_list) { 680 kfree(dl); 681 return NULL; 682 } 683 devinfo_table = list_entry(dl->top, 684 struct scsi_dev_info_list_table, 685 node); 686 dl->bottom = devinfo_table->scsi_dev_info_list.next; 687 } 688 689 return dl; 690 } 691 devinfo_seq_stop(struct seq_file * m,void * v)692 static void devinfo_seq_stop(struct seq_file *m, void *v) 693 { 694 kfree(v); 695 } 696 697 static const struct seq_operations scsi_devinfo_seq_ops = { 698 .start = devinfo_seq_start, 699 .next = devinfo_seq_next, 700 .stop = devinfo_seq_stop, 701 .show = devinfo_seq_show, 702 }; 703 proc_scsi_devinfo_open(struct inode * inode,struct file * file)704 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 705 { 706 return seq_open(file, &scsi_devinfo_seq_ops); 707 } 708 709 /* 710 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 711 * 712 * Description: Adds a black/white list entry for vendor and model with an 713 * integer value of flag to the scsi device info list. 714 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 715 */ proc_scsi_devinfo_write(struct file * file,const char __user * buf,size_t length,loff_t * ppos)716 static ssize_t proc_scsi_devinfo_write(struct file *file, 717 const char __user *buf, 718 size_t length, loff_t *ppos) 719 { 720 char *buffer; 721 ssize_t err = length; 722 723 if (!buf || length>PAGE_SIZE) 724 return -EINVAL; 725 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 726 return -ENOMEM; 727 if (copy_from_user(buffer, buf, length)) { 728 err =-EFAULT; 729 goto out; 730 } 731 732 if (length < PAGE_SIZE) 733 buffer[length] = '\0'; 734 else if (buffer[PAGE_SIZE-1]) { 735 err = -EINVAL; 736 goto out; 737 } 738 739 scsi_dev_info_list_add_str(buffer); 740 741 out: 742 free_page((unsigned long)buffer); 743 return err; 744 } 745 746 static const struct proc_ops scsi_devinfo_proc_ops = { 747 .proc_open = proc_scsi_devinfo_open, 748 .proc_read = seq_read, 749 .proc_write = proc_scsi_devinfo_write, 750 .proc_lseek = seq_lseek, 751 .proc_release = seq_release, 752 }; 753 #endif /* CONFIG_SCSI_PROC_FS */ 754 755 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 756 MODULE_PARM_DESC(dev_flags, 757 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 758 " list entries for vendor and model with an integer value of flags" 759 " to the scsi device info list"); 760 761 module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 762 MODULE_PARM_DESC(default_dev_flags, 763 "scsi default device flag uint64_t value"); 764 765 /** 766 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 767 **/ scsi_exit_devinfo(void)768 void scsi_exit_devinfo(void) 769 { 770 #ifdef CONFIG_SCSI_PROC_FS 771 remove_proc_entry("scsi/device_info", NULL); 772 #endif 773 774 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 775 } 776 777 /** 778 * scsi_dev_info_add_list - add a new devinfo list 779 * @key: key of the list to add 780 * @name: Name of the list to add (for /proc/scsi/device_info) 781 * 782 * Adds the requested list, returns zero on success, -EEXIST if the 783 * key is already registered to a list, or other error on failure. 784 */ scsi_dev_info_add_list(enum scsi_devinfo_key key,const char * name)785 int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 786 { 787 struct scsi_dev_info_list_table *devinfo_table = 788 scsi_devinfo_lookup_by_key(key); 789 790 if (!IS_ERR(devinfo_table)) 791 /* list already exists */ 792 return -EEXIST; 793 794 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 795 796 if (!devinfo_table) 797 return -ENOMEM; 798 799 INIT_LIST_HEAD(&devinfo_table->node); 800 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 801 devinfo_table->name = name; 802 devinfo_table->key = key; 803 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 804 805 return 0; 806 } 807 EXPORT_SYMBOL(scsi_dev_info_add_list); 808 809 /** 810 * scsi_dev_info_remove_list - destroy an added devinfo list 811 * @key: key of the list to destroy 812 * 813 * Iterates over the entire list first, freeing all the values, then 814 * frees the list itself. Returns 0 on success or -EINVAL if the key 815 * can't be found. 816 */ scsi_dev_info_remove_list(enum scsi_devinfo_key key)817 int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 818 { 819 struct list_head *lh, *lh_next; 820 struct scsi_dev_info_list_table *devinfo_table = 821 scsi_devinfo_lookup_by_key(key); 822 823 if (IS_ERR(devinfo_table)) 824 /* no such list */ 825 return -EINVAL; 826 827 /* remove from the master list */ 828 list_del(&devinfo_table->node); 829 830 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 831 struct scsi_dev_info_list *devinfo; 832 833 devinfo = list_entry(lh, struct scsi_dev_info_list, 834 dev_info_list); 835 kfree(devinfo); 836 } 837 kfree(devinfo_table); 838 839 return 0; 840 } 841 EXPORT_SYMBOL(scsi_dev_info_remove_list); 842 843 /** 844 * scsi_init_devinfo - set up the dynamic device list. 845 * 846 * Description: 847 * Add command line entries from scsi_dev_flags, then add 848 * scsi_static_device_list entries to the scsi device info list. 849 */ scsi_init_devinfo(void)850 int __init scsi_init_devinfo(void) 851 { 852 #ifdef CONFIG_SCSI_PROC_FS 853 struct proc_dir_entry *p; 854 #endif 855 int error, i; 856 857 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 858 if (error) 859 return error; 860 861 error = scsi_dev_info_list_add_str(scsi_dev_flags); 862 if (error) 863 goto out; 864 865 for (i = 0; scsi_static_device_list[i].vendor; i++) { 866 error = scsi_dev_info_list_add(1 /* compatibile */, 867 scsi_static_device_list[i].vendor, 868 scsi_static_device_list[i].model, 869 NULL, 870 scsi_static_device_list[i].flags); 871 if (error) 872 goto out; 873 } 874 875 #ifdef CONFIG_SCSI_PROC_FS 876 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops); 877 if (!p) { 878 error = -ENOMEM; 879 goto out; 880 } 881 #endif /* CONFIG_SCSI_PROC_FS */ 882 883 out: 884 if (error) 885 scsi_exit_devinfo(); 886 return error; 887 } 888