1 // SPDX-License-Identifier: GPL-2.0
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>
12 #include <scsi/scsi_device.h>
13 #include <scsi/scsi_devinfo.h>
15 #include "scsi_priv.h"
19 * scsi_dev_info_list: structure to hold black/white listed devices.
21 struct scsi_dev_info_list {
22 struct list_head dev_info_list;
26 unsigned compatible; /* for use with scsi_static_device_list entries */
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 */
37 static blist_flags_t scsi_default_dev_flags;
38 static LIST_HEAD(scsi_dev_info_list);
39 static char scsi_dev_flags[256];
42 * scsi_static_device_list: deprecated list of devices that require
43 * settings that differ from the default, includes black-listed (broken)
44 * devices. The entries here are added to the tail of scsi_dev_info_list
45 * via scsi_dev_info_list_init.
47 * Do not add to this list, use the command line or proc interface to add
48 * to the scsi_dev_info_list. This table will eventually go away.
53 char *revision; /* revision known to be bad, unused */
55 } scsi_static_device_list[] __initdata = {
57 * The following devices are known not to tolerate a lun != 0 scan
58 * for one reason or another. Some will respond to all luns,
59 * others will lock up.
61 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */
62 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */
63 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */
64 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */
65 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */
66 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */
67 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */
68 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */
69 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */
70 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */
71 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */
72 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */
73 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */
74 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */
75 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */
76 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */
77 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
78 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */
79 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */
80 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */
82 * The following causes a failed REQUEST SENSE on lun 1 for
83 * aha152x controller, which causes SCSI code to reset bus.
85 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
87 * The following causes a failed REQUEST SENSE on lun 1 for
88 * aha152x controller, which causes SCSI code to reset bus.
90 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
91 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */
92 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */
93 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
94 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
95 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
96 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
97 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN},
98 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */
99 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */
101 * The following causes a failed REQUEST SENSE on lun 1 for
102 * seagate controller, which causes SCSI code to reset bus.
104 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
105 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */
107 * The following causes a failed REQUEST SENSE on lun 1 for
108 * seagate controller, which causes SCSI code to reset bus.
110 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */
111 {"HP", "C1790A", NULL, BLIST_NOLUN}, /* scanjet iip */
112 {"HP", "C2500A", NULL, BLIST_NOLUN}, /* scanjet iicx */
113 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */
114 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */
115 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */
116 {"NEC", "D3856", "0009", BLIST_NOLUN},
117 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */
118 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */
119 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */
120 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */
121 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */
122 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN | BLIST_BORKEN},
123 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
124 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */
125 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */
126 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */
127 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */
128 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */
131 * Other types of devices that have special flags.
132 * Note that all USB devices should have the BLIST_INQUIRY_36 flag.
134 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2},
135 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
136 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
137 {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES},
138 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
139 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
140 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
141 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
142 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
143 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
144 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
145 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
146 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
147 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
148 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */
149 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */
150 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
151 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
152 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
153 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
154 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
155 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
156 {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
157 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
158 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
159 {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
160 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
161 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, storage on LUN 0 */
162 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */
163 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
164 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
165 BLIST_REPORTLUN2 | BLIST_RETRY_ITF},
166 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
167 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
168 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
169 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
170 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
171 {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1},
172 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
173 {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */
174 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
175 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
176 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
177 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
178 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES},
179 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
180 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */
181 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
182 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
183 {"HP", "C1557A", NULL, BLIST_FORCELUN},
184 {"HP", "C3323-300", "4269", BLIST_NOTQ},
185 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
186 {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
187 {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES},
188 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
189 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
190 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
191 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
192 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
193 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
194 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
195 {"INSITE", "I325VM", NULL, BLIST_KEY},
196 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
197 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
198 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
199 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
200 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES},
201 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
202 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
203 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
204 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
205 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
206 {"MICROP", "4110", NULL, BLIST_NOTQ},
207 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC},
208 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
209 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
210 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
211 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
212 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
213 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
214 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
215 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
216 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
217 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
218 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
221 {"Promise", "", NULL, BLIST_SPARSELUN},
222 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
223 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
224 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
225 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
226 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
227 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
228 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
229 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
230 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
231 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
232 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
233 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
234 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
235 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
236 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
237 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
238 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
239 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
240 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
241 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
242 {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
243 {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
244 {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES |
246 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
247 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
248 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
249 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
250 {"SUN", "T300", "*", BLIST_SPARSELUN},
251 {"SUN", "T4", "*", BLIST_SPARSELUN},
252 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
253 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
254 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
255 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
256 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
257 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
258 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
259 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
260 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
261 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
262 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
263 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
264 { NULL, NULL, NULL, 0 },
267 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
269 struct scsi_dev_info_list_table *devinfo_table;
272 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
273 if (devinfo_table->key == key) {
278 return ERR_PTR(-EINVAL);
280 return devinfo_table;
284 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
285 * devinfo vendor and model strings.
287 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
288 char *from, int compatible)
292 from_length = strlen(from);
293 /* This zero-pads the destination */
294 strncpy(to, from, to_length);
295 if (from_length < to_length && !compatible) {
297 * space pad the string if it is short.
299 memset(&to[from_length], ' ', to_length - from_length);
301 if (from_length > to_length)
302 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
303 __func__, name, from);
307 * scsi_dev_info_list_add - add one dev_info list entry.
308 * @compatible: if true, null terminate short strings. Otherwise space pad.
309 * @vendor: vendor string
310 * @model: model (product) string
311 * @strflags: integer string
312 * @flags: if strflags NULL, use this flag value
315 * Create and add one dev_info entry for @vendor, @model, @strflags or
316 * @flag. If @compatible, add to the tail of the list, do not space
317 * pad, and set devinfo->compatible. The scsi_static_device_list entries
318 * are added with @compatible 1 and @clfags NULL.
320 * Returns: 0 OK, -error on failure.
322 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
323 char *strflags, blist_flags_t flags)
325 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
327 SCSI_DEVINFO_GLOBAL);
331 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
332 * @compatible: if true, null terminate short strings. Otherwise space pad.
333 * @vendor: vendor string
334 * @model: model (product) string
335 * @strflags: integer string
336 * @flags: if strflags NULL, use this flag value
337 * @key: specify list to use
340 * Create and add one dev_info entry for @vendor, @model,
341 * @strflags or @flag in list specified by @key. If @compatible,
342 * add to the tail of the list, do not space pad, and set
343 * devinfo->compatible. The scsi_static_device_list entries are
344 * added with @compatible 1 and @clfags NULL.
346 * Returns: 0 OK, -error on failure.
348 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
349 char *strflags, blist_flags_t flags,
350 enum scsi_devinfo_key key)
352 struct scsi_dev_info_list *devinfo;
353 struct scsi_dev_info_list_table *devinfo_table =
354 scsi_devinfo_lookup_by_key(key);
356 if (IS_ERR(devinfo_table))
357 return PTR_ERR(devinfo_table);
359 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
361 printk(KERN_ERR "%s: no memory\n", __func__);
365 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
367 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
371 unsigned long long val;
372 int ret = kstrtoull(strflags, 0, &val);
378 flags = (__force blist_flags_t)val;
380 if (flags & __BLIST_UNUSED_MASK) {
381 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx",
382 vendor, model, flags & __BLIST_UNUSED_MASK);
386 devinfo->flags = flags;
387 devinfo->compatible = compatible;
390 list_add_tail(&devinfo->dev_info_list,
391 &devinfo_table->scsi_dev_info_list);
393 list_add(&devinfo->dev_info_list,
394 &devinfo_table->scsi_dev_info_list);
398 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
401 * scsi_dev_info_list_find - find a matching dev_info list entry.
402 * @vendor: full vendor string
403 * @model: full model (product) string
404 * @key: specify list to use
407 * Finds the first dev_info entry matching @vendor, @model
408 * in list specified by @key.
410 * Returns: pointer to matching entry, or ERR_PTR on failure.
412 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
413 const char *model, enum scsi_devinfo_key key)
415 struct scsi_dev_info_list *devinfo;
416 struct scsi_dev_info_list_table *devinfo_table =
417 scsi_devinfo_lookup_by_key(key);
418 size_t vmax, mmax, mlen;
419 const char *vskip, *mskip;
421 if (IS_ERR(devinfo_table))
422 return (struct scsi_dev_info_list *) devinfo_table;
424 /* Prepare for "compatible" matches */
427 * XXX why skip leading spaces? If an odd INQUIRY
428 * value, that should have been part of the
429 * scsi_static_device_list[] entry, such as " FOO"
430 * rather than "FOO". Since this code is already
431 * here, and we don't know what device it is
432 * trying to work with, leave it as-is.
434 vmax = sizeof(devinfo->vendor);
436 while (vmax > 0 && *vskip == ' ') {
440 /* Also skip trailing spaces */
441 while (vmax > 0 && vskip[vmax - 1] == ' ')
444 mmax = sizeof(devinfo->model);
446 while (mmax > 0 && *mskip == ' ') {
450 while (mmax > 0 && mskip[mmax - 1] == ' ')
453 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
455 if (devinfo->compatible) {
457 * vendor strings must be an exact match
459 if (vmax != strnlen(devinfo->vendor,
460 sizeof(devinfo->vendor)) ||
461 memcmp(devinfo->vendor, vskip, vmax))
465 * @model specifies the full string, and
466 * must be larger or equal to devinfo->model
468 mlen = strnlen(devinfo->model, sizeof(devinfo->model));
469 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen))
473 if (!memcmp(devinfo->vendor, vendor,
474 sizeof(devinfo->vendor)) &&
475 !memcmp(devinfo->model, model,
476 sizeof(devinfo->model)))
481 return ERR_PTR(-ENOENT);
485 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
486 * @vendor: vendor string
487 * @model: model (product) string
488 * @key: specify list to use
491 * Remove and destroy one dev_info entry for @vendor, @model
492 * in list specified by @key.
494 * Returns: 0 OK, -error on failure.
496 int scsi_dev_info_list_del_keyed(char *vendor, char *model,
497 enum scsi_devinfo_key key)
499 struct scsi_dev_info_list *found;
501 found = scsi_dev_info_list_find(vendor, model, key);
503 return PTR_ERR(found);
505 list_del(&found->dev_info_list);
509 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
512 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
513 * @dev_list: string of device flags to add
516 * Parse dev_list, and add entries to the scsi_dev_info_list.
517 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
518 * dev_list is modified via strsep. Can be called for command line
519 * addition, for proc or mabye a sysfs interface.
521 * Returns: 0 if OK, -error on failure.
523 static int scsi_dev_info_list_add_str(char *dev_list)
525 char *vendor, *model, *strflags, *next;
530 if (next && next[0] == '"') {
532 * Ignore both the leading and trailing quote.
541 * For the leading and trailing '"' case, the for loop comes
542 * through the last time with vendor[0] == '\0'.
544 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
545 && (res == 0); vendor = strsep(&next, ":")) {
547 model = strsep(&next, ":");
549 strflags = strsep(&next, next_check);
550 if (!model || !strflags) {
551 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
552 " '%s'\n", __func__, vendor, model,
556 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
563 * scsi_get_device_flags - get device specific flags from the dynamic
565 * @sdev: &scsi_device to get flags for
566 * @vendor: vendor name
570 * Search the global scsi_dev_info_list (specified by list zero)
571 * for an entry matching @vendor and @model, if found, return the
572 * matching flags value, else return the host or global default
573 * settings. Called during scan time.
575 blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
576 const unsigned char *vendor,
577 const unsigned char *model)
579 return scsi_get_device_flags_keyed(sdev, vendor, model,
580 SCSI_DEVINFO_GLOBAL);
585 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
586 * @sdev: &scsi_device to get flags for
587 * @vendor: vendor name
589 * @key: list to look up
592 * Search the scsi_dev_info_list specified by @key for an entry
593 * matching @vendor and @model, if found, return the matching
594 * flags value, else return the host or global default settings.
595 * Called during scan time.
597 blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
598 const unsigned char *vendor,
599 const unsigned char *model,
600 enum scsi_devinfo_key key)
602 struct scsi_dev_info_list *devinfo;
604 devinfo = scsi_dev_info_list_find(vendor, model, key);
605 if (!IS_ERR(devinfo))
606 return devinfo->flags;
608 /* key or device not found: return nothing */
609 if (key != SCSI_DEVINFO_GLOBAL)
612 /* except for the global list, where we have an exception */
613 if (sdev->sdev_bflags)
614 return sdev->sdev_bflags;
616 return scsi_default_dev_flags;
618 EXPORT_SYMBOL(scsi_get_device_flags_keyed);
620 #ifdef CONFIG_SCSI_PROC_FS
622 struct list_head *top;
623 struct list_head *bottom;
626 static int devinfo_seq_show(struct seq_file *m, void *v)
628 struct double_list *dl = v;
629 struct scsi_dev_info_list_table *devinfo_table =
630 list_entry(dl->top, struct scsi_dev_info_list_table, node);
631 struct scsi_dev_info_list *devinfo =
632 list_entry(dl->bottom, struct scsi_dev_info_list,
635 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
637 seq_printf(m, "[%s]:\n", devinfo_table->name);
639 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n",
640 devinfo->vendor, devinfo->model, devinfo->flags);
644 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
646 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
652 list_for_each(dl->top, &scsi_dev_info_list) {
653 struct scsi_dev_info_list_table *devinfo_table =
654 list_entry(dl->top, struct scsi_dev_info_list_table,
656 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
665 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
667 struct double_list *dl = v;
668 struct scsi_dev_info_list_table *devinfo_table =
669 list_entry(dl->top, struct scsi_dev_info_list_table, node);
672 dl->bottom = dl->bottom->next;
673 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
674 dl->top = dl->top->next;
675 if (dl->top == &scsi_dev_info_list) {
679 devinfo_table = list_entry(dl->top,
680 struct scsi_dev_info_list_table,
682 dl->bottom = devinfo_table->scsi_dev_info_list.next;
688 static void devinfo_seq_stop(struct seq_file *m, void *v)
693 static const struct seq_operations scsi_devinfo_seq_ops = {
694 .start = devinfo_seq_start,
695 .next = devinfo_seq_next,
696 .stop = devinfo_seq_stop,
697 .show = devinfo_seq_show,
700 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
702 return seq_open(file, &scsi_devinfo_seq_ops);
706 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
708 * Description: Adds a black/white list entry for vendor and model with an
709 * integer value of flag to the scsi device info list.
710 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
712 static ssize_t proc_scsi_devinfo_write(struct file *file,
713 const char __user *buf,
714 size_t length, loff_t *ppos)
717 ssize_t err = length;
719 if (!buf || length>PAGE_SIZE)
721 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
723 if (copy_from_user(buffer, buf, length)) {
728 if (length < PAGE_SIZE)
729 buffer[length] = '\0';
730 else if (buffer[PAGE_SIZE-1]) {
735 scsi_dev_info_list_add_str(buffer);
738 free_page((unsigned long)buffer);
742 static const struct proc_ops scsi_devinfo_proc_ops = {
743 .proc_open = proc_scsi_devinfo_open,
744 .proc_read = seq_read,
745 .proc_write = proc_scsi_devinfo_write,
746 .proc_lseek = seq_lseek,
747 .proc_release = seq_release,
749 #endif /* CONFIG_SCSI_PROC_FS */
751 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
752 MODULE_PARM_DESC(dev_flags,
753 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
754 " list entries for vendor and model with an integer value of flags"
755 " to the scsi device info list");
757 module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644);
758 MODULE_PARM_DESC(default_dev_flags,
759 "scsi default device flag uint64_t value");
762 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
764 void scsi_exit_devinfo(void)
766 #ifdef CONFIG_SCSI_PROC_FS
767 remove_proc_entry("scsi/device_info", NULL);
770 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
774 * scsi_dev_info_add_list - add a new devinfo list
775 * @key: key of the list to add
776 * @name: Name of the list to add (for /proc/scsi/device_info)
778 * Adds the requested list, returns zero on success, -EEXIST if the
779 * key is already registered to a list, or other error on failure.
781 int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name)
783 struct scsi_dev_info_list_table *devinfo_table =
784 scsi_devinfo_lookup_by_key(key);
786 if (!IS_ERR(devinfo_table))
787 /* list already exists */
790 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
795 INIT_LIST_HEAD(&devinfo_table->node);
796 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
797 devinfo_table->name = name;
798 devinfo_table->key = key;
799 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
803 EXPORT_SYMBOL(scsi_dev_info_add_list);
806 * scsi_dev_info_remove_list - destroy an added devinfo list
807 * @key: key of the list to destroy
809 * Iterates over the entire list first, freeing all the values, then
810 * frees the list itself. Returns 0 on success or -EINVAL if the key
813 int scsi_dev_info_remove_list(enum scsi_devinfo_key key)
815 struct list_head *lh, *lh_next;
816 struct scsi_dev_info_list_table *devinfo_table =
817 scsi_devinfo_lookup_by_key(key);
819 if (IS_ERR(devinfo_table))
823 /* remove from the master list */
824 list_del(&devinfo_table->node);
826 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
827 struct scsi_dev_info_list *devinfo;
829 devinfo = list_entry(lh, struct scsi_dev_info_list,
833 kfree(devinfo_table);
837 EXPORT_SYMBOL(scsi_dev_info_remove_list);
840 * scsi_init_devinfo - set up the dynamic device list.
843 * Add command line entries from scsi_dev_flags, then add
844 * scsi_static_device_list entries to the scsi device info list.
846 int __init scsi_init_devinfo(void)
848 #ifdef CONFIG_SCSI_PROC_FS
849 struct proc_dir_entry *p;
853 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
857 error = scsi_dev_info_list_add_str(scsi_dev_flags);
861 for (i = 0; scsi_static_device_list[i].vendor; i++) {
862 error = scsi_dev_info_list_add(1 /* compatibile */,
863 scsi_static_device_list[i].vendor,
864 scsi_static_device_list[i].model,
866 scsi_static_device_list[i].flags);
871 #ifdef CONFIG_SCSI_PROC_FS
872 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops);
877 #endif /* CONFIG_SCSI_PROC_FS */