Line data Source code
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: deprecated list of devices that require
43 : * settings that differ from the default, includes black-listed (broken)
44 : * devices. The entries here are added to the tail of scsi_dev_info_list
45 : * via scsi_dev_info_list_init.
46 : *
47 : * Do not add to this list, use the command line or proc interface to add
48 : * to the scsi_dev_info_list. This table will eventually go away.
49 : */
50 : static struct {
51 : char *vendor;
52 : char *model;
53 : char *revision; /* revision known to be bad, unused */
54 : blist_flags_t flags;
55 : } scsi_static_device_list[] __initdata = {
56 : /*
57 : * The following devices are known not to tolerate a lun != 0 scan
58 : * for one reason or another. Some will respond to all luns,
59 : * others will lock up.
60 : */
61 : {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */
62 : {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */
63 : {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */
64 : {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */
65 : {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */
66 : {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */
67 : {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */
68 : {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */
69 : {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */
70 : {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */
71 : {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */
72 : {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */
73 : {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */
74 : {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */
75 : {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */
76 : {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */
77 : {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
78 : {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */
79 : {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */
80 : {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */
81 : /*
82 : * The following causes a failed REQUEST SENSE on lun 1 for
83 : * aha152x controller, which causes SCSI code to reset bus.
84 : */
85 : {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
86 : /*
87 : * The following causes a failed REQUEST SENSE on lun 1 for
88 : * aha152x controller, which causes SCSI code to reset bus.
89 : */
90 : {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
91 : {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */
92 : {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */
93 : {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
94 : {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
95 : {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
96 : {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
97 : {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN},
98 : {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */
99 : {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */
100 : /*
101 : * The following causes a failed REQUEST SENSE on lun 1 for
102 : * seagate controller, which causes SCSI code to reset bus.
103 : */
104 : {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
105 : {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */
106 : /*
107 : * The following causes a failed REQUEST SENSE on lun 1 for
108 : * seagate controller, which causes SCSI code to reset bus.
109 : */
110 : {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */
111 : {"HP", "C1790A", NULL, BLIST_NOLUN}, /* scanjet iip */
112 : {"HP", "C2500A", NULL, BLIST_NOLUN}, /* scanjet iicx */
113 : {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */
114 : {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */
115 : {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */
116 : {"NEC", "D3856", "0009", BLIST_NOLUN},
117 : {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */
118 : {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */
119 : {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */
120 : {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */
121 : {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */
122 : {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN | BLIST_BORKEN},
123 : {"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
124 : {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */
125 : {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */
126 : {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */
127 : {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */
128 : {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */
129 :
130 : /*
131 : * Other types of devices that have special flags.
132 : * Note that all USB devices should have the BLIST_INQUIRY_36 flag.
133 : */
134 : {"3PARdata", "VV", NULL, BLIST_REPORTLUN2},
135 : {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
136 : {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
137 : {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES},
138 : {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
139 : {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
140 : {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
141 : {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
142 : {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
143 : {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
144 : {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
145 : {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
146 : {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
147 : {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
148 : BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */
149 : {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */
150 : {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
151 : {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
152 : {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
153 : {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
154 : {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
155 : {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
156 : {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
157 : {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
158 : {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
159 : {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
160 : {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
161 : {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, storage on LUN 0 */
162 : {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */
163 : {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
164 : {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
165 : BLIST_REPORTLUN2 | BLIST_RETRY_ITF},
166 : {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
167 : {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
168 : {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
169 : {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
170 : {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
171 : {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1},
172 : {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
173 : {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */
174 : {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
175 : {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
176 : {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
177 : {"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
178 : {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES},
179 : {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
180 : {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */
181 : {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
182 : {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
183 : {"HP", "C1557A", NULL, BLIST_FORCELUN},
184 : {"HP", "C3323-300", "4269", BLIST_NOTQ},
185 : {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
186 : {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
187 : {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
188 : {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
189 : {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
190 : {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
191 : {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
192 : {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
193 : {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
194 : {"INSITE", "I325VM", NULL, BLIST_KEY},
195 : {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
196 : {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
197 : {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
198 : {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
199 : {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES},
200 : {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
201 : {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
202 : {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
203 : {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
204 : {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
205 : {"MICROP", "4110", NULL, BLIST_NOTQ},
206 : {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC},
207 : {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
208 : {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
209 : {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
210 : {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
211 : {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
212 : {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
213 : {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
214 : {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
215 : {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
216 : {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
217 : {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
218 : {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 : {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
220 : {"Promise", "", NULL, BLIST_SPARSELUN},
221 : {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
222 : {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
223 : {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
224 : {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
225 : {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
226 : {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
227 : {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
228 : {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
229 : {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
230 : {"SGI", "RAID3", "*", BLIST_SPARSELUN},
231 : {"SGI", "RAID5", "*", BLIST_SPARSELUN},
232 : {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
233 : {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
234 : {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
235 : {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
236 : {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
237 : {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
238 : {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
239 : {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
240 : {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
241 : {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
242 : {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
243 : {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES |
244 : BLIST_INQUIRY_36},
245 : {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
246 : {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
247 : {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
248 : {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
249 : {"SUN", "T300", "*", BLIST_SPARSELUN},
250 : {"SUN", "T4", "*", BLIST_SPARSELUN},
251 : {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
252 : {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
253 : {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
254 : {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
255 : {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
256 : {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
257 : {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
258 : {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
259 : {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
260 : {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
261 : {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
262 : {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
263 : { NULL, NULL, NULL, 0 },
264 : };
265 :
266 179 : static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
267 : {
268 179 : struct scsi_dev_info_list_table *devinfo_table;
269 179 : int found = 0;
270 :
271 179 : list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
272 178 : if (devinfo_table->key == key) {
273 : found = 1;
274 : break;
275 : }
276 179 : if (!found)
277 1 : return ERR_PTR(-EINVAL);
278 :
279 : return devinfo_table;
280 : }
281 :
282 : /*
283 : * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
284 : * devinfo vendor and model strings.
285 : */
286 356 : static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
287 : char *from, int compatible)
288 : {
289 356 : size_t from_length;
290 :
291 356 : from_length = strlen(from);
292 : /* This zero-pads the destination */
293 356 : strncpy(to, from, to_length);
294 356 : if (from_length < to_length && !compatible) {
295 : /*
296 : * space pad the string if it is short.
297 : */
298 0 : memset(&to[from_length], ' ', to_length - from_length);
299 : }
300 356 : if (from_length > to_length)
301 0 : printk(KERN_WARNING "%s: %s string '%s' is too long\n",
302 : __func__, name, from);
303 356 : }
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 : **/
321 178 : static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
322 : char *strflags, blist_flags_t flags)
323 : {
324 178 : 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 : **/
347 178 : int 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 : {
351 178 : struct scsi_dev_info_list *devinfo;
352 178 : struct scsi_dev_info_list_table *devinfo_table =
353 178 : scsi_devinfo_lookup_by_key(key);
354 :
355 178 : if (IS_ERR(devinfo_table))
356 0 : return PTR_ERR(devinfo_table);
357 :
358 178 : devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
359 178 : if (!devinfo) {
360 0 : printk(KERN_ERR "%s: no memory\n", __func__);
361 0 : return -ENOMEM;
362 : }
363 :
364 178 : scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
365 : vendor, compatible);
366 178 : scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
367 : model, compatible);
368 :
369 178 : if (strflags) {
370 0 : unsigned long long val;
371 0 : int ret = kstrtoull(strflags, 0, &val);
372 :
373 0 : if (ret != 0) {
374 0 : kfree(devinfo);
375 0 : return ret;
376 : }
377 0 : flags = (__force blist_flags_t)val;
378 : }
379 178 : if (flags & __BLIST_UNUSED_MASK) {
380 0 : pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx",
381 : vendor, model, flags & __BLIST_UNUSED_MASK);
382 0 : kfree(devinfo);
383 0 : return -EINVAL;
384 : }
385 178 : devinfo->flags = flags;
386 178 : devinfo->compatible = compatible;
387 :
388 178 : if (compatible)
389 178 : list_add_tail(&devinfo->dev_info_list,
390 : &devinfo_table->scsi_dev_info_list);
391 : else
392 0 : list_add(&devinfo->dev_info_list,
393 : &devinfo_table->scsi_dev_info_list);
394 :
395 : return 0;
396 : }
397 : EXPORT_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 : **/
411 0 : static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
412 : const char *model, enum scsi_devinfo_key key)
413 : {
414 0 : struct scsi_dev_info_list *devinfo;
415 0 : struct scsi_dev_info_list_table *devinfo_table =
416 0 : scsi_devinfo_lookup_by_key(key);
417 0 : size_t vmax, mmax, mlen;
418 0 : const char *vskip, *mskip;
419 :
420 0 : 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 0 : while (vmax > 0 && *vskip == ' ') {
436 0 : vmax--;
437 0 : vskip++;
438 : }
439 : /* Also skip trailing spaces */
440 0 : while (vmax > 0 && vskip[vmax - 1] == ' ')
441 : --vmax;
442 :
443 : mmax = sizeof(devinfo->model);
444 : mskip = model;
445 0 : while (mmax > 0 && *mskip == ' ') {
446 0 : mmax--;
447 0 : mskip++;
448 : }
449 0 : while (mmax > 0 && mskip[mmax - 1] == ' ')
450 : --mmax;
451 :
452 0 : list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
453 : dev_info_list) {
454 0 : if (devinfo->compatible) {
455 : /*
456 : * vendor strings must be an exact match
457 : */
458 0 : if (vmax != strnlen(devinfo->vendor,
459 0 : sizeof(devinfo->vendor)) ||
460 0 : memcmp(devinfo->vendor, vskip, vmax))
461 0 : continue;
462 :
463 : /*
464 : * @model specifies the full string, and
465 : * must be larger or equal to devinfo->model
466 : */
467 0 : mlen = strnlen(devinfo->model, sizeof(devinfo->model));
468 0 : if (mmax < mlen || memcmp(devinfo->model, mskip, mlen))
469 0 : continue;
470 0 : return devinfo;
471 : } else {
472 0 : if (!memcmp(devinfo->vendor, vendor,
473 0 : sizeof(devinfo->vendor)) &&
474 0 : !memcmp(devinfo->model, model,
475 : sizeof(devinfo->model)))
476 0 : return devinfo;
477 : }
478 : }
479 :
480 0 : return ERR_PTR(-ENOENT);
481 : }
482 :
483 : /**
484 : * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
485 : * @vendor: vendor string
486 : * @model: model (product) string
487 : * @key: specify list to use
488 : *
489 : * Description:
490 : * Remove and destroy one dev_info entry for @vendor, @model
491 : * in list specified by @key.
492 : *
493 : * Returns: 0 OK, -error on failure.
494 : **/
495 0 : int scsi_dev_info_list_del_keyed(char *vendor, char *model,
496 : enum scsi_devinfo_key key)
497 : {
498 0 : struct scsi_dev_info_list *found;
499 :
500 0 : found = scsi_dev_info_list_find(vendor, model, key);
501 0 : if (IS_ERR(found))
502 0 : return PTR_ERR(found);
503 :
504 0 : list_del(&found->dev_info_list);
505 0 : kfree(found);
506 0 : return 0;
507 : }
508 : EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
509 :
510 : /**
511 : * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
512 : * @dev_list: string of device flags to add
513 : *
514 : * Description:
515 : * Parse dev_list, and add entries to the scsi_dev_info_list.
516 : * dev_list is of the form "vendor:product:flag,vendor:product:flag".
517 : * dev_list is modified via strsep. Can be called for command line
518 : * addition, for proc or mabye a sysfs interface.
519 : *
520 : * Returns: 0 if OK, -error on failure.
521 : **/
522 1 : static int scsi_dev_info_list_add_str(char *dev_list)
523 : {
524 1 : char *vendor, *model, *strflags, *next;
525 1 : char *next_check;
526 1 : int res = 0;
527 :
528 1 : next = dev_list;
529 1 : if (next && next[0] == '"') {
530 : /*
531 : * Ignore both the leading and trailing quote.
532 : */
533 0 : next++;
534 0 : next_check = ",\"";
535 : } else {
536 : next_check = ",";
537 : }
538 :
539 : /*
540 : * For the leading and trailing '"' case, the for loop comes
541 : * through the last time with vendor[0] == '\0'.
542 : */
543 1 : for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
544 0 : && (res == 0); vendor = strsep(&next, ":")) {
545 0 : strflags = NULL;
546 0 : model = strsep(&next, ":");
547 0 : if (model)
548 0 : strflags = strsep(&next, next_check);
549 0 : if (!model || !strflags) {
550 0 : printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
551 : " '%s'\n", __func__, vendor, model,
552 : strflags);
553 0 : res = -EINVAL;
554 : } else
555 0 : res = scsi_dev_info_list_add(0 /* compatible */, vendor,
556 : model, strflags, 0);
557 : }
558 1 : return res;
559 : }
560 :
561 : /**
562 : * scsi_get_device_flags - get device specific flags from the dynamic
563 : * device list.
564 : * @sdev: &scsi_device to get flags for
565 : * @vendor: vendor name
566 : * @model: model name
567 : *
568 : * Description:
569 : * Search the global scsi_dev_info_list (specified by list zero)
570 : * for an entry matching @vendor and @model, if found, return the
571 : * matching flags value, else return the host or global default
572 : * settings. Called during scan time.
573 : **/
574 0 : blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
575 : const unsigned char *vendor,
576 : const unsigned char *model)
577 : {
578 0 : return scsi_get_device_flags_keyed(sdev, vendor, model,
579 : SCSI_DEVINFO_GLOBAL);
580 : }
581 :
582 :
583 : /**
584 : * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
585 : * @sdev: &scsi_device to get flags for
586 : * @vendor: vendor name
587 : * @model: model name
588 : * @key: list to look up
589 : *
590 : * Description:
591 : * Search the scsi_dev_info_list specified by @key for an entry
592 : * matching @vendor and @model, if found, return the matching
593 : * flags value, else return the host or global default settings.
594 : * Called during scan time.
595 : **/
596 0 : blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
597 : const unsigned char *vendor,
598 : const unsigned char *model,
599 : enum scsi_devinfo_key key)
600 : {
601 0 : struct scsi_dev_info_list *devinfo;
602 :
603 0 : devinfo = scsi_dev_info_list_find(vendor, model, key);
604 0 : if (!IS_ERR(devinfo))
605 0 : return devinfo->flags;
606 :
607 : /* key or device not found: return nothing */
608 0 : if (key != SCSI_DEVINFO_GLOBAL)
609 : return 0;
610 :
611 : /* except for the global list, where we have an exception */
612 0 : if (sdev->sdev_bflags)
613 : return sdev->sdev_bflags;
614 :
615 0 : return scsi_default_dev_flags;
616 : }
617 : EXPORT_SYMBOL(scsi_get_device_flags_keyed);
618 :
619 : #ifdef CONFIG_SCSI_PROC_FS
620 : struct double_list {
621 : struct list_head *top;
622 : struct list_head *bottom;
623 : };
624 :
625 : static int devinfo_seq_show(struct seq_file *m, void *v)
626 : {
627 : struct double_list *dl = v;
628 : struct scsi_dev_info_list_table *devinfo_table =
629 : list_entry(dl->top, struct scsi_dev_info_list_table, node);
630 : struct scsi_dev_info_list *devinfo =
631 : list_entry(dl->bottom, struct scsi_dev_info_list,
632 : dev_info_list);
633 :
634 : if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
635 : devinfo_table->name)
636 : seq_printf(m, "[%s]:\n", devinfo_table->name);
637 :
638 : seq_printf(m, "'%.8s' '%.16s' 0x%llx\n",
639 : devinfo->vendor, devinfo->model, devinfo->flags);
640 : return 0;
641 : }
642 :
643 : static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
644 : {
645 : struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
646 : loff_t pos = *ppos;
647 :
648 : if (!dl)
649 : return NULL;
650 :
651 : list_for_each(dl->top, &scsi_dev_info_list) {
652 : struct scsi_dev_info_list_table *devinfo_table =
653 : list_entry(dl->top, struct scsi_dev_info_list_table,
654 : node);
655 : list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
656 : if (pos-- == 0)
657 : return dl;
658 : }
659 :
660 : kfree(dl);
661 : return NULL;
662 : }
663 :
664 : static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
665 : {
666 : struct double_list *dl = v;
667 : struct scsi_dev_info_list_table *devinfo_table =
668 : list_entry(dl->top, struct scsi_dev_info_list_table, node);
669 :
670 : ++*ppos;
671 : dl->bottom = dl->bottom->next;
672 : while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
673 : dl->top = dl->top->next;
674 : if (dl->top == &scsi_dev_info_list) {
675 : kfree(dl);
676 : return NULL;
677 : }
678 : devinfo_table = list_entry(dl->top,
679 : struct scsi_dev_info_list_table,
680 : node);
681 : dl->bottom = devinfo_table->scsi_dev_info_list.next;
682 : }
683 :
684 : return dl;
685 : }
686 :
687 : static void devinfo_seq_stop(struct seq_file *m, void *v)
688 : {
689 : kfree(v);
690 : }
691 :
692 : static const struct seq_operations scsi_devinfo_seq_ops = {
693 : .start = devinfo_seq_start,
694 : .next = devinfo_seq_next,
695 : .stop = devinfo_seq_stop,
696 : .show = devinfo_seq_show,
697 : };
698 :
699 : static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
700 : {
701 : return seq_open(file, &scsi_devinfo_seq_ops);
702 : }
703 :
704 : /*
705 : * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
706 : *
707 : * Description: Adds a black/white list entry for vendor and model with an
708 : * integer value of flag to the scsi device info list.
709 : * To use, echo "vendor:model:flag" > /proc/scsi/device_info
710 : */
711 : static ssize_t proc_scsi_devinfo_write(struct file *file,
712 : const char __user *buf,
713 : size_t length, loff_t *ppos)
714 : {
715 : char *buffer;
716 : ssize_t err = length;
717 :
718 : if (!buf || length>PAGE_SIZE)
719 : return -EINVAL;
720 : if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
721 : return -ENOMEM;
722 : if (copy_from_user(buffer, buf, length)) {
723 : err =-EFAULT;
724 : goto out;
725 : }
726 :
727 : if (length < PAGE_SIZE)
728 : buffer[length] = '\0';
729 : else if (buffer[PAGE_SIZE-1]) {
730 : err = -EINVAL;
731 : goto out;
732 : }
733 :
734 : scsi_dev_info_list_add_str(buffer);
735 :
736 : out:
737 : free_page((unsigned long)buffer);
738 : return err;
739 : }
740 :
741 : static const struct proc_ops scsi_devinfo_proc_ops = {
742 : .proc_open = proc_scsi_devinfo_open,
743 : .proc_read = seq_read,
744 : .proc_write = proc_scsi_devinfo_write,
745 : .proc_lseek = seq_lseek,
746 : .proc_release = seq_release,
747 : };
748 : #endif /* CONFIG_SCSI_PROC_FS */
749 :
750 : module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
751 : MODULE_PARM_DESC(dev_flags,
752 : "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
753 : " list entries for vendor and model with an integer value of flags"
754 : " to the scsi device info list");
755 :
756 : module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644);
757 : MODULE_PARM_DESC(default_dev_flags,
758 : "scsi default device flag uint64_t value");
759 :
760 : /**
761 : * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
762 : **/
763 0 : void scsi_exit_devinfo(void)
764 : {
765 : #ifdef CONFIG_SCSI_PROC_FS
766 : remove_proc_entry("scsi/device_info", NULL);
767 : #endif
768 :
769 0 : scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
770 0 : }
771 :
772 : /**
773 : * scsi_dev_info_add_list - add a new devinfo list
774 : * @key: key of the list to add
775 : * @name: Name of the list to add (for /proc/scsi/device_info)
776 : *
777 : * Adds the requested list, returns zero on success, -EEXIST if the
778 : * key is already registered to a list, or other error on failure.
779 : */
780 1 : int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name)
781 : {
782 1 : struct scsi_dev_info_list_table *devinfo_table =
783 1 : scsi_devinfo_lookup_by_key(key);
784 :
785 1 : if (!IS_ERR(devinfo_table))
786 : /* list already exists */
787 : return -EEXIST;
788 :
789 1 : devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
790 :
791 1 : if (!devinfo_table)
792 : return -ENOMEM;
793 :
794 1 : INIT_LIST_HEAD(&devinfo_table->node);
795 1 : INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
796 1 : devinfo_table->name = name;
797 1 : devinfo_table->key = key;
798 1 : list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
799 :
800 1 : return 0;
801 : }
802 : EXPORT_SYMBOL(scsi_dev_info_add_list);
803 :
804 : /**
805 : * scsi_dev_info_remove_list - destroy an added devinfo list
806 : * @key: key of the list to destroy
807 : *
808 : * Iterates over the entire list first, freeing all the values, then
809 : * frees the list itself. Returns 0 on success or -EINVAL if the key
810 : * can't be found.
811 : */
812 0 : int scsi_dev_info_remove_list(enum scsi_devinfo_key key)
813 : {
814 0 : struct list_head *lh, *lh_next;
815 0 : struct scsi_dev_info_list_table *devinfo_table =
816 0 : scsi_devinfo_lookup_by_key(key);
817 :
818 0 : if (IS_ERR(devinfo_table))
819 : /* no such list */
820 : return -EINVAL;
821 :
822 : /* remove from the master list */
823 0 : list_del(&devinfo_table->node);
824 :
825 0 : list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
826 0 : struct scsi_dev_info_list *devinfo;
827 :
828 0 : devinfo = list_entry(lh, struct scsi_dev_info_list,
829 : dev_info_list);
830 0 : kfree(devinfo);
831 : }
832 0 : kfree(devinfo_table);
833 :
834 0 : return 0;
835 : }
836 : EXPORT_SYMBOL(scsi_dev_info_remove_list);
837 :
838 : /**
839 : * scsi_init_devinfo - set up the dynamic device list.
840 : *
841 : * Description:
842 : * Add command line entries from scsi_dev_flags, then add
843 : * scsi_static_device_list entries to the scsi device info list.
844 : */
845 1 : int __init scsi_init_devinfo(void)
846 : {
847 : #ifdef CONFIG_SCSI_PROC_FS
848 : struct proc_dir_entry *p;
849 : #endif
850 1 : int error, i;
851 :
852 1 : error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
853 1 : if (error)
854 : return error;
855 :
856 1 : error = scsi_dev_info_list_add_str(scsi_dev_flags);
857 1 : if (error)
858 0 : goto out;
859 :
860 179 : for (i = 0; scsi_static_device_list[i].vendor; i++) {
861 178 : error = scsi_dev_info_list_add(1 /* compatibile */,
862 : scsi_static_device_list[i].vendor,
863 : scsi_static_device_list[i].model,
864 : NULL,
865 : scsi_static_device_list[i].flags);
866 178 : if (error)
867 0 : goto out;
868 : }
869 :
870 : #ifdef CONFIG_SCSI_PROC_FS
871 : p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops);
872 : if (!p) {
873 : error = -ENOMEM;
874 : goto out;
875 : }
876 : #endif /* CONFIG_SCSI_PROC_FS */
877 :
878 1 : out:
879 1 : if (error)
880 0 : scsi_exit_devinfo();
881 : return error;
882 : }
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