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scsi_devinfo.c
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linux-6.19.14/drivers/scsi/scsi_devinfo.c
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: 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 */ 49static 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 | BLIST_SKIP_IO_HINTS}, 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 269static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) 270{ 271 struct scsi_dev_info_list_table *devinfo_table; 272 273 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) 274 if (devinfo_table->key == key) 275 return devinfo_table; 276 277 return ERR_PTR(-EINVAL); 278} 279 280/* 281 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into 282 * devinfo vendor and model strings. 283 */ 284static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, 285 char *from, int compatible) 286{ 287 size_t from_length; 288 289 from_length = strlen(from); 290 291 /* 292 * null pad and null terminate if compatible 293 * otherwise space pad 294 */ 295 if (compatible) 296 strscpy_pad(to, from, to_length); 297 else 298 memcpy_and_pad(to, to_length, from, from_length, ' '); 299 300 if (from_length > to_length) 301 printk(KERN_WARNING "%s: %s string '%s' is too long\n", 302 __func__, name, from); 303} 304 305/** 306 * scsi_dev_info_list_add - add one dev_info list entry. 307 * @compatible: if true, null terminate short strings. Otherwise space pad. 308 * @vendor: vendor string 309 * @model: model (product) string 310 * @strflags: integer string 311 * @flags: if strflags NULL, use this flag value 312 * 313 * Description: 314 * Create and add one dev_info entry for @vendor, @model, @strflags or 315 * @flag. If @compatible, add to the tail of the list, do not space 316 * pad, and set devinfo->compatible. The scsi_static_device_list entries 317 * are added with @compatible 1 and @clfags NULL. 318 * 319 * Returns: 0 OK, -error on failure. 320 **/ 321static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, 322 char *strflags, blist_flags_t flags) 323{ 324 return scsi_dev_info_list_add_keyed(compatible, vendor, model, 325 strflags, flags, 326 SCSI_DEVINFO_GLOBAL); 327} 328 329/** 330 * scsi_dev_info_list_add_keyed - add one dev_info list entry. 331 * @compatible: if true, null terminate short strings. Otherwise space pad. 332 * @vendor: vendor string 333 * @model: model (product) string 334 * @strflags: integer string 335 * @flags: if strflags NULL, use this flag value 336 * @key: specify list to use 337 * 338 * Description: 339 * Create and add one dev_info entry for @vendor, @model, 340 * @strflags or @flag in list specified by @key. If @compatible, 341 * add to the tail of the list, do not space pad, and set 342 * devinfo->compatible. The scsi_static_device_list entries are 343 * added with @compatible 1 and @clfags NULL. 344 * 345 * Returns: 0 OK, -error on failure. 346 **/ 347int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, 348 char *strflags, blist_flags_t flags, 349 enum scsi_devinfo_key key) 350{ 351 struct scsi_dev_info_list *devinfo; 352 struct scsi_dev_info_list_table *devinfo_table = 353 scsi_devinfo_lookup_by_key(key); 354 355 if (IS_ERR(devinfo_table)) 356 return PTR_ERR(devinfo_table); 357 358 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); 359 if (!devinfo) { 360 printk(KERN_ERR "%s: no memory\n", __func__); 361 return -ENOMEM; 362 } 363 364 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), 365 vendor, compatible); 366 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), 367 model, compatible); 368 369 if (strflags) { 370 unsigned long long val; 371 int ret = kstrtoull(strflags, 0, &val); 372 373 if (ret != 0) { 374 kfree(devinfo); 375 return ret; 376 } 377 flags = (__force blist_flags_t)val; 378 } 379 if (flags & __BLIST_UNUSED_MASK) { 380 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", 381 vendor, model, flags & __BLIST_UNUSED_MASK); 382 kfree(devinfo); 383 return -EINVAL; 384 } 385 devinfo->flags = flags; 386 devinfo->compatible = compatible; 387 388 if (compatible) 389 list_add_tail(&devinfo->dev_info_list, 390 &devinfo_table->scsi_dev_info_list); 391 else 392 list_add(&devinfo->dev_info_list, 393 &devinfo_table->scsi_dev_info_list); 394 395 return 0; 396} 397EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); 398 399/** 400 * scsi_dev_info_list_find - find a matching dev_info list entry. 401 * @vendor: full vendor string 402 * @model: full model (product) string 403 * @key: specify list to use 404 * 405 * Description: 406 * Finds the first dev_info entry matching @vendor, @model 407 * in list specified by @key. 408 * 409 * Returns: pointer to matching entry, or ERR_PTR on failure. 410 **/ 411static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor, 412 const char *model, enum scsi_devinfo_key key) 413{ 414 struct scsi_dev_info_list *devinfo; 415 struct scsi_dev_info_list_table *devinfo_table = 416 scsi_devinfo_lookup_by_key(key); 417 size_t vmax, mmax, mlen; 418 const char *vskip, *mskip; 419 420 if (IS_ERR(devinfo_table)) 421 return (struct scsi_dev_info_list *) devinfo_table; 422 423 /* Prepare for "compatible" matches */ 424 425 /* 426 * XXX why skip leading spaces? If an odd INQUIRY 427 * value, that should have been part of the 428 * scsi_static_device_list[] entry, such as " FOO" 429 * rather than "FOO". Since this code is already 430 * here, and we don't know what device it is 431 * trying to work with, leave it as-is. 432 */ 433 vmax = sizeof(devinfo->vendor); 434 vskip = vendor; 435 while (vmax > 0 && *vskip == ' ') { 436 vmax--; 437 vskip++; 438 } 439 /* Also skip trailing spaces */ 440 while (vmax > 0 && vskip[vmax - 1] == ' ') 441 --vmax; 442 443 mmax = sizeof(devinfo->model); 444 mskip = model; 445 while (mmax > 0 && *mskip == ' ') { 446 mmax--; 447 mskip++; 448 } 449 while (mmax > 0 && mskip[mmax - 1] == ' ') 450 --mmax; 451 452 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, 453 dev_info_list) { 454 if (devinfo->compatible) { 455 /* 456 * vendor strings must be an exact match 457 */ 458 if (vmax != strnlen(devinfo->vendor, 459 sizeof(devinfo->vendor)) || 460 memcmp(devinfo->vendor, vskip, vmax)) 461 continue; 462 463 /* 464 * @model specifies the full string, and 465 * must be larger or equal to devinfo->model 466 */ 467 mlen = strnlen(devinfo->model, sizeof(devinfo->model)); 468 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) 469 continue; 470 return devinfo; 471 } else { 472 if (!memcmp(devinfo->vendor, vendor, 473 sizeof(devinfo->vendor)) && 474 !memcmp(devinfo->model, model, 475 sizeof(devinfo->model))) 476 return devinfo; 477 } 478 } 479 480 return ERR_PTR(-ENOENT); 481} 482 483/** 484 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. 485 * @dev_list: string of device flags to add 486 * 487 * Description: 488 * Parse dev_list, and add entries to the scsi_dev_info_list. 489 * dev_list is of the form "vendor:product:flag,vendor:product:flag". 490 * dev_list is modified via strsep. Can be called for command line 491 * addition, for proc or mabye a sysfs interface. 492 * 493 * Returns: 0 if OK, -error on failure. 494 **/ 495static int scsi_dev_info_list_add_str(char *dev_list) 496{ 497 char *vendor, *model, *strflags, *next; 498 char *next_check; 499 int res = 0; 500 501 next = dev_list; 502 if (next && next[0] == '"') { 503 /* 504 * Ignore both the leading and trailing quote. 505 */ 506 next++; 507 next_check = ",\""; 508 } else { 509 next_check = ","; 510 } 511 512 /* 513 * For the leading and trailing '"' case, the for loop comes 514 * through the last time with vendor[0] == '\0'. 515 */ 516 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') 517 && (res == 0); vendor = strsep(&next, ":")) { 518 strflags = NULL; 519 model = strsep(&next, ":"); 520 if (model) 521 strflags = strsep(&next, next_check); 522 if (!model || !strflags) { 523 pr_err("%s: bad dev info string '%s' '%s' '%s'\n", 524 __func__, vendor, model ? model : "", 525 strflags ? strflags : ""); 526 res = -EINVAL; 527 } else 528 res = scsi_dev_info_list_add(0 /* compatible */, vendor, 529 model, strflags, 0); 530 } 531 return res; 532} 533 534/** 535 * scsi_get_device_flags - get device specific flags from the dynamic 536 * device list. 537 * @sdev: &scsi_device to get flags for 538 * @vendor: vendor name 539 * @model: model name 540 * 541 * Description: 542 * Search the global scsi_dev_info_list (specified by list zero) 543 * for an entry matching @vendor and @model, if found, return the 544 * matching flags value, else return the host or global default 545 * settings. Called during scan time. 546 **/ 547blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 548 const unsigned char *vendor, 549 const unsigned char *model) 550{ 551 return scsi_get_device_flags_keyed(sdev, vendor, model, 552 SCSI_DEVINFO_GLOBAL); 553} 554 555 556/** 557 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list 558 * @sdev: &scsi_device to get flags for 559 * @vendor: vendor name 560 * @model: model name 561 * @key: list to look up 562 * 563 * Description: 564 * Search the scsi_dev_info_list specified by @key for an entry 565 * matching @vendor and @model, if found, return the matching 566 * flags value, else return the host or global default settings. 567 * Called during scan time. 568 **/ 569blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 570 const unsigned char *vendor, 571 const unsigned char *model, 572 enum scsi_devinfo_key key) 573{ 574 struct scsi_dev_info_list *devinfo; 575 576 devinfo = scsi_dev_info_list_find(vendor, model, key); 577 if (!IS_ERR(devinfo)) 578 return devinfo->flags; 579 580 /* key or device not found: return nothing */ 581 if (key != SCSI_DEVINFO_GLOBAL) 582 return 0; 583 584 /* except for the global list, where we have an exception */ 585 if (sdev->sdev_bflags) 586 return sdev->sdev_bflags; 587 588 return scsi_default_dev_flags; 589} 590EXPORT_SYMBOL(scsi_get_device_flags_keyed); 591 592#ifdef CONFIG_SCSI_PROC_FS 593struct double_list { 594 struct list_head *top; 595 struct list_head *bottom; 596}; 597 598static int devinfo_seq_show(struct seq_file *m, void *v) 599{ 600 struct double_list *dl = v; 601 struct scsi_dev_info_list_table *devinfo_table = 602 list_entry(dl->top, struct scsi_dev_info_list_table, node); 603 struct scsi_dev_info_list *devinfo = 604 list_entry(dl->bottom, struct scsi_dev_info_list, 605 dev_info_list); 606 607 if (devinfo_table->scsi_dev_info_list.next == dl->bottom && 608 devinfo_table->name) 609 seq_printf(m, "[%s]:\n", devinfo_table->name); 610 611 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n", 612 devinfo->vendor, devinfo->model, devinfo->flags); 613 return 0; 614} 615 616static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) 617{ 618 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); 619 loff_t pos = *ppos; 620 621 if (!dl) 622 return NULL; 623 624 list_for_each(dl->top, &scsi_dev_info_list) { 625 struct scsi_dev_info_list_table *devinfo_table = 626 list_entry(dl->top, struct scsi_dev_info_list_table, 627 node); 628 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) 629 if (pos-- == 0) 630 return dl; 631 } 632 633 kfree(dl); 634 return NULL; 635} 636 637static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) 638{ 639 struct double_list *dl = v; 640 struct scsi_dev_info_list_table *devinfo_table = 641 list_entry(dl->top, struct scsi_dev_info_list_table, node); 642 643 ++*ppos; 644 dl->bottom = dl->bottom->next; 645 while (&devinfo_table->scsi_dev_info_list == dl->bottom) { 646 dl->top = dl->top->next; 647 if (dl->top == &scsi_dev_info_list) { 648 kfree(dl); 649 return NULL; 650 } 651 devinfo_table = list_entry(dl->top, 652 struct scsi_dev_info_list_table, 653 node); 654 dl->bottom = devinfo_table->scsi_dev_info_list.next; 655 } 656 657 return dl; 658} 659 660static void devinfo_seq_stop(struct seq_file *m, void *v) 661{ 662 kfree(v); 663} 664 665static const struct seq_operations scsi_devinfo_seq_ops = { 666 .start = devinfo_seq_start, 667 .next = devinfo_seq_next, 668 .stop = devinfo_seq_stop, 669 .show = devinfo_seq_show, 670}; 671 672static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) 673{ 674 return seq_open(file, &scsi_devinfo_seq_ops); 675} 676 677/* 678 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. 679 * 680 * Description: Adds a black/white list entry for vendor and model with an 681 * integer value of flag to the scsi device info list. 682 * To use, echo "vendor:model:flag" > /proc/scsi/device_info 683 */ 684static ssize_t proc_scsi_devinfo_write(struct file *file, 685 const char __user *buf, 686 size_t length, loff_t *ppos) 687{ 688 char *buffer; 689 ssize_t err = length; 690 691 if (!buf || length>PAGE_SIZE) 692 return -EINVAL; 693 if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) 694 return -ENOMEM; 695 if (copy_from_user(buffer, buf, length)) { 696 err =-EFAULT; 697 goto out; 698 } 699 700 if (length < PAGE_SIZE) 701 buffer[length] = '\0'; 702 else if (buffer[PAGE_SIZE-1]) { 703 err = -EINVAL; 704 goto out; 705 } 706 707 scsi_dev_info_list_add_str(buffer); 708 709out: 710 free_page((unsigned long)buffer); 711 return err; 712} 713 714static const struct proc_ops scsi_devinfo_proc_ops = { 715 .proc_open = proc_scsi_devinfo_open, 716 .proc_read = seq_read, 717 .proc_write = proc_scsi_devinfo_write, 718 .proc_lseek = seq_lseek, 719 .proc_release = seq_release, 720}; 721#endif /* CONFIG_SCSI_PROC_FS */ 722 723module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); 724MODULE_PARM_DESC(dev_flags, 725 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" 726 " list entries for vendor and model with an integer value of flags" 727 " to the scsi device info list"); 728 729module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644); 730MODULE_PARM_DESC(default_dev_flags, 731 "scsi default device flag uint64_t value"); 732 733/** 734 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list 735 **/ 736void scsi_exit_devinfo(void) 737{ 738#ifdef CONFIG_SCSI_PROC_FS 739 remove_proc_entry("scsi/device_info", NULL); 740#endif 741 742 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); 743} 744 745/** 746 * scsi_dev_info_add_list - add a new devinfo list 747 * @key: key of the list to add 748 * @name: Name of the list to add (for /proc/scsi/device_info) 749 * 750 * Adds the requested list, returns zero on success, -EEXIST if the 751 * key is already registered to a list, or other error on failure. 752 */ 753int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name) 754{ 755 struct scsi_dev_info_list_table *devinfo_table = 756 scsi_devinfo_lookup_by_key(key); 757 758 if (!IS_ERR(devinfo_table)) 759 /* list already exists */ 760 return -EEXIST; 761 762 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); 763 764 if (!devinfo_table) 765 return -ENOMEM; 766 767 INIT_LIST_HEAD(&devinfo_table->node); 768 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); 769 devinfo_table->name = name; 770 devinfo_table->key = key; 771 list_add_tail(&devinfo_table->node, &scsi_dev_info_list); 772 773 return 0; 774} 775EXPORT_SYMBOL(scsi_dev_info_add_list); 776 777/** 778 * scsi_dev_info_remove_list - destroy an added devinfo list 779 * @key: key of the list to destroy 780 * 781 * Iterates over the entire list first, freeing all the values, then 782 * frees the list itself. Returns 0 on success or -EINVAL if the key 783 * can't be found. 784 */ 785int scsi_dev_info_remove_list(enum scsi_devinfo_key key) 786{ 787 struct list_head *lh, *lh_next; 788 struct scsi_dev_info_list_table *devinfo_table = 789 scsi_devinfo_lookup_by_key(key); 790 791 if (IS_ERR(devinfo_table)) 792 /* no such list */ 793 return -EINVAL; 794 795 /* remove from the master list */ 796 list_del(&devinfo_table->node); 797 798 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { 799 struct scsi_dev_info_list *devinfo; 800 801 devinfo = list_entry(lh, struct scsi_dev_info_list, 802 dev_info_list); 803 kfree(devinfo); 804 } 805 kfree(devinfo_table); 806 807 return 0; 808} 809EXPORT_SYMBOL(scsi_dev_info_remove_list); 810 811/** 812 * scsi_init_devinfo - set up the dynamic device list. 813 * 814 * Description: 815 * Add command line entries from scsi_dev_flags, then add 816 * scsi_static_device_list entries to the scsi device info list. 817 */ 818int __init scsi_init_devinfo(void) 819{ 820#ifdef CONFIG_SCSI_PROC_FS 821 struct proc_dir_entry *p; 822#endif 823 int error, i; 824 825 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); 826 if (error) 827 return error; 828 829 error = scsi_dev_info_list_add_str(scsi_dev_flags); 830 if (error) 831 goto out; 832 833 for (i = 0; scsi_static_device_list[i].vendor; i++) { 834 error = scsi_dev_info_list_add(1 /* compatible */, 835 scsi_static_device_list[i].vendor, 836 scsi_static_device_list[i].model, 837 NULL, 838 scsi_static_device_list[i].flags); 839 if (error) 840 goto out; 841 } 842 843#ifdef CONFIG_SCSI_PROC_FS 844 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops); 845 if (!p) { 846 error = -ENOMEM; 847 goto out; 848 } 849#endif /* CONFIG_SCSI_PROC_FS */ 850 851 out: 852 if (error) 853 scsi_exit_devinfo(); 854 return error; 855}
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