888 lines · c
1// SPDX-License-Identifier: GPL-2.02 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 differ43 * from the default, includes black-listed (broken) devices. The entries here44 * 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 than47 * 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 scan57 * 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 for82 * 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 for87 * 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 for101 * 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 for107 * 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 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 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 into287 * devinfo vendor and model strings.288 */289static 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 compatible298 * otherwise space pad299 */300 if (compatible)301 strscpy_pad(to, from, to_length);302 else303 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 string314 * @model: model (product) string315 * @strflags: integer string316 * @flags: if strflags NULL, use this flag value317 *318 * Description:319 * Create and add one dev_info entry for @vendor, @model, @strflags or320 * @flag. If @compatible, add to the tail of the list, do not space321 * pad, and set devinfo->compatible. The scsi_static_device_list entries322 * are added with @compatible 1 and @clfags NULL.323 *324 * Returns: 0 OK, -error on failure.325 **/326static 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 string338 * @model: model (product) string339 * @strflags: integer string340 * @flags: if strflags NULL, use this flag value341 * @key: specify list to use342 *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 set347 * devinfo->compatible. The scsi_static_device_list entries are348 * added with @compatible 1 and @clfags NULL.349 *350 * Returns: 0 OK, -error on failure.351 **/352int 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 else397 list_add(&devinfo->dev_info_list,398 &devinfo_table->scsi_dev_info_list);399 400 return 0;401}402EXPORT_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 string407 * @model: full model (product) string408 * @key: specify list to use409 *410 * Description:411 * Finds the first dev_info entry matching @vendor, @model412 * in list specified by @key.413 *414 * Returns: pointer to matching entry, or ERR_PTR on failure.415 **/416static 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 INQUIRY432 * value, that should have been part of the433 * scsi_static_device_list[] entry, such as " FOO"434 * rather than "FOO". Since this code is already435 * here, and we don't know what device it is436 * 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 match462 */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, and470 * must be larger or equal to devinfo->model471 */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 string491 * @model: model (product) string492 * @key: specify list to use493 *494 * Description:495 * Remove and destroy one dev_info entry for @vendor, @model496 * in list specified by @key.497 *498 * Returns: 0 OK, -error on failure.499 **/500int 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}513EXPORT_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 add518 *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 line523 * addition, for proc or mabye a sysfs interface.524 *525 * Returns: 0 if OK, -error on failure.526 **/527static 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 comes546 * 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 } else560 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 dynamic568 * device list.569 * @sdev: &scsi_device to get flags for570 * @vendor: vendor name571 * @model: model name572 *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 the576 * matching flags value, else return the host or global default577 * settings. Called during scan time.578 **/579blist_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 list590 * @sdev: &scsi_device to get flags for591 * @vendor: vendor name592 * @model: model name593 * @key: list to look up594 *595 * Description:596 * Search the scsi_dev_info_list specified by @key for an entry597 * matching @vendor and @model, if found, return the matching598 * flags value, else return the host or global default settings.599 * Called during scan time.600 **/601blist_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}622EXPORT_SYMBOL(scsi_get_device_flags_keyed);623 624#ifdef CONFIG_SCSI_PROC_FS625struct double_list {626 struct list_head *top;627 struct list_head *bottom;628};629 630static 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 648static 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 669static 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 692static void devinfo_seq_stop(struct seq_file *m, void *v)693{694 kfree(v);695}696 697static 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 704static 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 an713 * integer value of flag to the scsi device info list.714 * To use, echo "vendor:model:flag" > /proc/scsi/device_info715 */716static 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 741out:742 free_page((unsigned long)buffer);743 return err;744}745 746static 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 755module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);756MODULE_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 761module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644);762MODULE_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_list767 **/768void scsi_exit_devinfo(void)769{770#ifdef CONFIG_SCSI_PROC_FS771 remove_proc_entry("scsi/device_info", NULL);772#endif773 774 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);775}776 777/**778 * scsi_dev_info_add_list - add a new devinfo list779 * @key: key of the list to add780 * @name: Name of the list to add (for /proc/scsi/device_info)781 *782 * Adds the requested list, returns zero on success, -EEXIST if the783 * key is already registered to a list, or other error on failure.784 */785int 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}807EXPORT_SYMBOL(scsi_dev_info_add_list);808 809/**810 * scsi_dev_info_remove_list - destroy an added devinfo list811 * @key: key of the list to destroy812 *813 * Iterates over the entire list first, freeing all the values, then814 * frees the list itself. Returns 0 on success or -EINVAL if the key815 * can't be found.816 */817int 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}841EXPORT_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 add848 * scsi_static_device_list entries to the scsi device info list.849 */850int __init scsi_init_devinfo(void)851{852#ifdef CONFIG_SCSI_PROC_FS853 struct proc_dir_entry *p;854#endif855 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_FS876 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