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1
2#include <linux/blkdev.h>
3#include <linux/init.h>
4#include <linux/kernel.h>
5#include <linux/module.h>
6#include <linux/moduleparam.h>
7#include <linux/proc_fs.h>
8#include <linux/seq_file.h>
9#include <linux/slab.h>
10
11#include <scsi/scsi_device.h>
12#include <scsi/scsi_devinfo.h>
13
14#include "scsi_priv.h"
15
16
17/*
18 * scsi_dev_info_list: structure to hold black/white listed devices.
19 */
20struct scsi_dev_info_list {
21 struct list_head dev_info_list;
22 char vendor[8];
23 char model[16];
24 unsigned flags;
25 unsigned compatible; /* for use with scsi_static_device_list entries */
26};
27
28struct scsi_dev_info_list_table {
29 struct list_head node; /* our node for being on the master list */
30 struct list_head scsi_dev_info_list; /* head of dev info list */
31 const char *name; /* name of list for /proc (NULL for global) */
32 int key; /* unique numeric identifier */
33};
34
35
36static const char spaces[] = " "; /* 16 of them */
37static unsigned scsi_default_dev_flags;
38static LIST_HEAD(scsi_dev_info_list);
39static 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 */
50static struct {
51 char *vendor;
52 char *model;
53 char *revision; /* revision known to be bad, unused */
54 unsigned 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", "", BLIST_NOLUN}, /* scanjet iip */
112 {"HP", "C2500A", "", 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},
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 {"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}, /* Dell PV 650F, storage on LUN 0 */
161 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */
162 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
163 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
164 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
165 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
166 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
167 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
168 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
169 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
170 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36},
171 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36},
172 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
173 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
174 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
175 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
176 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
177 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
178 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
179 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
180 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
181 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
182 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
183 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
184 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
185 {"HP", "C1557A", NULL, BLIST_FORCELUN},
186 {"HP", "C3323-300", "4269", BLIST_NOTQ},
187 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
188 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
189 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
190 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
191 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
192 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
193 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
194 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
195 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
196 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
197 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
198 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
199 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
200 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
201 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
202 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
203 {"INSITE", "I325VM", NULL, BLIST_KEY},
204 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
205 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
206 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
207 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
208 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
209 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
210 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
211 {"MICROP", "4110", NULL, BLIST_NOTQ},
212 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
213 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
214 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
215 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
216 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
217 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
218 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
221 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
222 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
223 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
224 {"Promise", "", NULL, BLIST_SPARSELUN},
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 {"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 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
238 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
239 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
240 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
241 {"SUN", "T300", "*", BLIST_SPARSELUN},
242 {"SUN", "T4", "*", BLIST_SPARSELUN},
243 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
244 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
245 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
246 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
247 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
248 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
249 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
250 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
251 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
252 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
253 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
254 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
255 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
256 { NULL, NULL, NULL, 0 },
257};
258
259static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
260{
261 struct scsi_dev_info_list_table *devinfo_table;
262 int found = 0;
263
264 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
265 if (devinfo_table->key == key) {
266 found = 1;
267 break;
268 }
269 if (!found)
270 return ERR_PTR(-EINVAL);
271
272 return devinfo_table;
273}
274
275/*
276 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
277 * devinfo vendor and model strings.
278 */
279static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
280 char *from, int compatible)
281{
282 size_t from_length;
283
284 from_length = strlen(from);
285 strncpy(to, from, min(to_length, from_length));
286 if (from_length < to_length) {
287 if (compatible) {
288 /*
289 * NUL terminate the string if it is short.
290 */
291 to[from_length] = '\0';
292 } else {
293 /*
294 * space pad the string if it is short.
295 */
296 strncpy(&to[from_length], spaces,
297 to_length - from_length);
298 }
299 }
300 if (from_length > to_length)
301 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
302 __func__, name, from);
303}
304
305/**
306 * scsi_dev_info_list_add - add one dev_info list entry.
307 * @compatible: if true, null terminate short strings. Otherwise space pad.
308 * @vendor: vendor string
309 * @model: model (product) string
310 * @strflags: integer string
311 * @flags: if strflags NULL, use this flag value
312 *
313 * Description:
314 * Create and add one dev_info entry for @vendor, @model, @strflags or
315 * @flag. If @compatible, add to the tail of the list, do not space
316 * pad, and set devinfo->compatible. The scsi_static_device_list entries
317 * are added with @compatible 1 and @clfags NULL.
318 *
319 * Returns: 0 OK, -error on failure.
320 **/
321static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
322 char *strflags, int flags)
323{
324 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
325 strflags, flags,
326 SCSI_DEVINFO_GLOBAL);
327}
328
329/**
330 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
331 * @compatible: if true, null terminate short strings. Otherwise space pad.
332 * @vendor: vendor string
333 * @model: model (product) string
334 * @strflags: integer string
335 * @flags: if strflags NULL, use this flag value
336 * @key: specify list to use
337 *
338 * Description:
339 * Create and add one dev_info entry for @vendor, @model,
340 * @strflags or @flag in list specified by @key. If @compatible,
341 * add to the tail of the list, do not space pad, and set
342 * devinfo->compatible. The scsi_static_device_list entries are
343 * added with @compatible 1 and @clfags NULL.
344 *
345 * Returns: 0 OK, -error on failure.
346 **/
347int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
348 char *strflags, int flags, int key)
349{
350 struct scsi_dev_info_list *devinfo;
351 struct scsi_dev_info_list_table *devinfo_table =
352 scsi_devinfo_lookup_by_key(key);
353
354 if (IS_ERR(devinfo_table))
355 return PTR_ERR(devinfo_table);
356
357 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
358 if (!devinfo) {
359 printk(KERN_ERR "%s: no memory\n", __func__);
360 return -ENOMEM;
361 }
362
363 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
364 vendor, compatible);
365 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
366 model, compatible);
367
368 if (strflags)
369 devinfo->flags = simple_strtoul(strflags, NULL, 0);
370 else
371 devinfo->flags = flags;
372
373 devinfo->compatible = compatible;
374
375 if (compatible)
376 list_add_tail(&devinfo->dev_info_list,
377 &devinfo_table->scsi_dev_info_list);
378 else
379 list_add(&devinfo->dev_info_list,
380 &devinfo_table->scsi_dev_info_list);
381
382 return 0;
383}
384EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
385
386/**
387 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
388 * @vendor: vendor string
389 * @model: model (product) string
390 * @key: specify list to use
391 *
392 * Description:
393 * Remove and destroy one dev_info entry for @vendor, @model
394 * in list specified by @key.
395 *
396 * Returns: 0 OK, -error on failure.
397 **/
398int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
399{
400 struct scsi_dev_info_list *devinfo, *found = NULL;
401 struct scsi_dev_info_list_table *devinfo_table =
402 scsi_devinfo_lookup_by_key(key);
403
404 if (IS_ERR(devinfo_table))
405 return PTR_ERR(devinfo_table);
406
407 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
408 dev_info_list) {
409 if (devinfo->compatible) {
410 /*
411 * Behave like the older version of get_device_flags.
412 */
413 size_t max;
414 /*
415 * XXX why skip leading spaces? If an odd INQUIRY
416 * value, that should have been part of the
417 * scsi_static_device_list[] entry, such as " FOO"
418 * rather than "FOO". Since this code is already
419 * here, and we don't know what device it is
420 * trying to work with, leave it as-is.
421 */
422 max = 8; /* max length of vendor */
423 while ((max > 0) && *vendor == ' ') {
424 max--;
425 vendor++;
426 }
427 /*
428 * XXX removing the following strlen() would be
429 * good, using it means that for a an entry not in
430 * the list, we scan every byte of every vendor
431 * listed in scsi_static_device_list[], and never match
432 * a single one (and still have to compare at
433 * least the first byte of each vendor).
434 */
435 if (memcmp(devinfo->vendor, vendor,
436 min(max, strlen(devinfo->vendor))))
437 continue;
438 /*
439 * Skip spaces again.
440 */
441 max = 16; /* max length of model */
442 while ((max > 0) && *model == ' ') {
443 max--;
444 model++;
445 }
446 if (memcmp(devinfo->model, model,
447 min(max, strlen(devinfo->model))))
448 continue;
449 found = devinfo;
450 } else {
451 if (!memcmp(devinfo->vendor, vendor,
452 sizeof(devinfo->vendor)) &&
453 !memcmp(devinfo->model, model,
454 sizeof(devinfo->model)))
455 found = devinfo;
456 }
457 if (found)
458 break;
459 }
460
461 if (found) {
462 list_del(&found->dev_info_list);
463 kfree(found);
464 return 0;
465 }
466
467 return -ENOENT;
468}
469EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
470
471/**
472 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
473 * @dev_list: string of device flags to add
474 *
475 * Description:
476 * Parse dev_list, and add entries to the scsi_dev_info_list.
477 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
478 * dev_list is modified via strsep. Can be called for command line
479 * addition, for proc or mabye a sysfs interface.
480 *
481 * Returns: 0 if OK, -error on failure.
482 **/
483static int scsi_dev_info_list_add_str(char *dev_list)
484{
485 char *vendor, *model, *strflags, *next;
486 char *next_check;
487 int res = 0;
488
489 next = dev_list;
490 if (next && next[0] == '"') {
491 /*
492 * Ignore both the leading and trailing quote.
493 */
494 next++;
495 next_check = ",\"";
496 } else {
497 next_check = ",";
498 }
499
500 /*
501 * For the leading and trailing '"' case, the for loop comes
502 * through the last time with vendor[0] == '\0'.
503 */
504 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
505 && (res == 0); vendor = strsep(&next, ":")) {
506 strflags = NULL;
507 model = strsep(&next, ":");
508 if (model)
509 strflags = strsep(&next, next_check);
510 if (!model || !strflags) {
511 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
512 " '%s'\n", __func__, vendor, model,
513 strflags);
514 res = -EINVAL;
515 } else
516 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
517 model, strflags, 0);
518 }
519 return res;
520}
521
522/**
523 * get_device_flags - get device specific flags from the dynamic device list.
524 * @sdev: &scsi_device to get flags for
525 * @vendor: vendor name
526 * @model: model name
527 *
528 * Description:
529 * Search the global scsi_dev_info_list (specified by list zero)
530 * for an entry matching @vendor and @model, if found, return the
531 * matching flags value, else return the host or global default
532 * settings. Called during scan time.
533 **/
534int scsi_get_device_flags(struct scsi_device *sdev,
535 const unsigned char *vendor,
536 const unsigned char *model)
537{
538 return scsi_get_device_flags_keyed(sdev, vendor, model,
539 SCSI_DEVINFO_GLOBAL);
540}
541
542
543/**
544 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
545 * @sdev: &scsi_device to get flags for
546 * @vendor: vendor name
547 * @model: model name
548 * @key: list to look up
549 *
550 * Description:
551 * Search the scsi_dev_info_list specified by @key for an entry
552 * matching @vendor and @model, if found, return the matching
553 * flags value, else return the host or global default settings.
554 * Called during scan time.
555 **/
556int scsi_get_device_flags_keyed(struct scsi_device *sdev,
557 const unsigned char *vendor,
558 const unsigned char *model,
559 int key)
560{
561 struct scsi_dev_info_list *devinfo;
562 struct scsi_dev_info_list_table *devinfo_table;
563
564 devinfo_table = scsi_devinfo_lookup_by_key(key);
565
566 if (IS_ERR(devinfo_table))
567 return PTR_ERR(devinfo_table);
568
569 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
570 dev_info_list) {
571 if (devinfo->compatible) {
572 /*
573 * Behave like the older version of get_device_flags.
574 */
575 size_t max;
576 /*
577 * XXX why skip leading spaces? If an odd INQUIRY
578 * value, that should have been part of the
579 * scsi_static_device_list[] entry, such as " FOO"
580 * rather than "FOO". Since this code is already
581 * here, and we don't know what device it is
582 * trying to work with, leave it as-is.
583 */
584 max = 8; /* max length of vendor */
585 while ((max > 0) && *vendor == ' ') {
586 max--;
587 vendor++;
588 }
589 /*
590 * XXX removing the following strlen() would be
591 * good, using it means that for a an entry not in
592 * the list, we scan every byte of every vendor
593 * listed in scsi_static_device_list[], and never match
594 * a single one (and still have to compare at
595 * least the first byte of each vendor).
596 */
597 if (memcmp(devinfo->vendor, vendor,
598 min(max, strlen(devinfo->vendor))))
599 continue;
600 /*
601 * Skip spaces again.
602 */
603 max = 16; /* max length of model */
604 while ((max > 0) && *model == ' ') {
605 max--;
606 model++;
607 }
608 if (memcmp(devinfo->model, model,
609 min(max, strlen(devinfo->model))))
610 continue;
611 return devinfo->flags;
612 } else {
613 if (!memcmp(devinfo->vendor, vendor,
614 sizeof(devinfo->vendor)) &&
615 !memcmp(devinfo->model, model,
616 sizeof(devinfo->model)))
617 return devinfo->flags;
618 }
619 }
620 /* nothing found, return nothing */
621 if (key != SCSI_DEVINFO_GLOBAL)
622 return 0;
623
624 /* except for the global list, where we have an exception */
625 if (sdev->sdev_bflags)
626 return sdev->sdev_bflags;
627
628 return scsi_default_dev_flags;
629}
630EXPORT_SYMBOL(scsi_get_device_flags_keyed);
631
632#ifdef CONFIG_SCSI_PROC_FS
633struct double_list {
634 struct list_head *top;
635 struct list_head *bottom;
636};
637
638static int devinfo_seq_show(struct seq_file *m, void *v)
639{
640 struct double_list *dl = v;
641 struct scsi_dev_info_list_table *devinfo_table =
642 list_entry(dl->top, struct scsi_dev_info_list_table, node);
643 struct scsi_dev_info_list *devinfo =
644 list_entry(dl->bottom, struct scsi_dev_info_list,
645 dev_info_list);
646
647 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
648 devinfo_table->name)
649 seq_printf(m, "[%s]:\n", devinfo_table->name);
650
651 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
652 devinfo->vendor, devinfo->model, devinfo->flags);
653 return 0;
654}
655
656static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
657{
658 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
659 loff_t pos = *ppos;
660
661 if (!dl)
662 return NULL;
663
664 list_for_each(dl->top, &scsi_dev_info_list) {
665 struct scsi_dev_info_list_table *devinfo_table =
666 list_entry(dl->top, struct scsi_dev_info_list_table,
667 node);
668 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
669 if (pos-- == 0)
670 return dl;
671 }
672
673 kfree(dl);
674 return NULL;
675}
676
677static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
678{
679 struct double_list *dl = v;
680 struct scsi_dev_info_list_table *devinfo_table =
681 list_entry(dl->top, struct scsi_dev_info_list_table, node);
682
683 ++*ppos;
684 dl->bottom = dl->bottom->next;
685 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
686 dl->top = dl->top->next;
687 if (dl->top == &scsi_dev_info_list) {
688 kfree(dl);
689 return NULL;
690 }
691 devinfo_table = list_entry(dl->top,
692 struct scsi_dev_info_list_table,
693 node);
694 dl->bottom = devinfo_table->scsi_dev_info_list.next;
695 }
696
697 return dl;
698}
699
700static void devinfo_seq_stop(struct seq_file *m, void *v)
701{
702 kfree(v);
703}
704
705static const struct seq_operations scsi_devinfo_seq_ops = {
706 .start = devinfo_seq_start,
707 .next = devinfo_seq_next,
708 .stop = devinfo_seq_stop,
709 .show = devinfo_seq_show,
710};
711
712static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
713{
714 return seq_open(file, &scsi_devinfo_seq_ops);
715}
716
717/*
718 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
719 *
720 * Description: Adds a black/white list entry for vendor and model with an
721 * integer value of flag to the scsi device info list.
722 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
723 */
724static ssize_t proc_scsi_devinfo_write(struct file *file,
725 const char __user *buf,
726 size_t length, loff_t *ppos)
727{
728 char *buffer;
729 ssize_t err = length;
730
731 if (!buf || length>PAGE_SIZE)
732 return -EINVAL;
733 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
734 return -ENOMEM;
735 if (copy_from_user(buffer, buf, length)) {
736 err =-EFAULT;
737 goto out;
738 }
739
740 if (length < PAGE_SIZE)
741 buffer[length] = '\0';
742 else if (buffer[PAGE_SIZE-1]) {
743 err = -EINVAL;
744 goto out;
745 }
746
747 scsi_dev_info_list_add_str(buffer);
748
749out:
750 free_page((unsigned long)buffer);
751 return err;
752}
753
754static const struct file_operations scsi_devinfo_proc_fops = {
755 .owner = THIS_MODULE,
756 .open = proc_scsi_devinfo_open,
757 .read = seq_read,
758 .write = proc_scsi_devinfo_write,
759 .llseek = seq_lseek,
760 .release = seq_release,
761};
762#endif /* CONFIG_SCSI_PROC_FS */
763
764module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
765MODULE_PARM_DESC(dev_flags,
766 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
767 " list entries for vendor and model with an integer value of flags"
768 " to the scsi device info list");
769
770module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
771MODULE_PARM_DESC(default_dev_flags,
772 "scsi default device flag integer value");
773
774/**
775 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
776 **/
777void scsi_exit_devinfo(void)
778{
779#ifdef CONFIG_SCSI_PROC_FS
780 remove_proc_entry("scsi/device_info", NULL);
781#endif
782
783 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
784}
785
786/**
787 * scsi_dev_info_add_list - add a new devinfo list
788 * @key: key of the list to add
789 * @name: Name of the list to add (for /proc/scsi/device_info)
790 *
791 * Adds the requested list, returns zero on success, -EEXIST if the
792 * key is already registered to a list, or other error on failure.
793 */
794int scsi_dev_info_add_list(int key, const char *name)
795{
796 struct scsi_dev_info_list_table *devinfo_table =
797 scsi_devinfo_lookup_by_key(key);
798
799 if (!IS_ERR(devinfo_table))
800 /* list already exists */
801 return -EEXIST;
802
803 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
804
805 if (!devinfo_table)
806 return -ENOMEM;
807
808 INIT_LIST_HEAD(&devinfo_table->node);
809 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
810 devinfo_table->name = name;
811 devinfo_table->key = key;
812 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
813
814 return 0;
815}
816EXPORT_SYMBOL(scsi_dev_info_add_list);
817
818/**
819 * scsi_dev_info_remove_list - destroy an added devinfo list
820 * @key: key of the list to destroy
821 *
822 * Iterates over the entire list first, freeing all the values, then
823 * frees the list itself. Returns 0 on success or -EINVAL if the key
824 * can't be found.
825 */
826int scsi_dev_info_remove_list(int key)
827{
828 struct list_head *lh, *lh_next;
829 struct scsi_dev_info_list_table *devinfo_table =
830 scsi_devinfo_lookup_by_key(key);
831
832 if (IS_ERR(devinfo_table))
833 /* no such list */
834 return -EINVAL;
835
836 /* remove from the master list */
837 list_del(&devinfo_table->node);
838
839 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
840 struct scsi_dev_info_list *devinfo;
841
842 devinfo = list_entry(lh, struct scsi_dev_info_list,
843 dev_info_list);
844 kfree(devinfo);
845 }
846 kfree(devinfo_table);
847
848 return 0;
849}
850EXPORT_SYMBOL(scsi_dev_info_remove_list);
851
852/**
853 * scsi_init_devinfo - set up the dynamic device list.
854 *
855 * Description:
856 * Add command line entries from scsi_dev_flags, then add
857 * scsi_static_device_list entries to the scsi device info list.
858 */
859int __init scsi_init_devinfo(void)
860{
861#ifdef CONFIG_SCSI_PROC_FS
862 struct proc_dir_entry *p;
863#endif
864 int error, i;
865
866 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
867 if (error)
868 return error;
869
870 error = scsi_dev_info_list_add_str(scsi_dev_flags);
871 if (error)
872 goto out;
873
874 for (i = 0; scsi_static_device_list[i].vendor; i++) {
875 error = scsi_dev_info_list_add(1 /* compatibile */,
876 scsi_static_device_list[i].vendor,
877 scsi_static_device_list[i].model,
878 NULL,
879 scsi_static_device_list[i].flags);
880 if (error)
881 goto out;
882 }
883
884#ifdef CONFIG_SCSI_PROC_FS
885 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
886 if (!p) {
887 error = -ENOMEM;
888 goto out;
889 }
890#endif /* CONFIG_SCSI_PROC_FS */
891
892 out:
893 if (error)
894 scsi_exit_devinfo();
895 return error;
896}
1// SPDX-License-Identifier: GPL-2.0
2
3#include <linux/blkdev.h>
4#include <linux/init.h>
5#include <linux/kernel.h>
6#include <linux/module.h>
7#include <linux/moduleparam.h>
8#include <linux/proc_fs.h>
9#include <linux/seq_file.h>
10#include <linux/slab.h>
11
12#include <scsi/scsi_device.h>
13#include <scsi/scsi_devinfo.h>
14
15#include "scsi_priv.h"
16
17
18/*
19 * scsi_dev_info_list: structure to hold black/white listed devices.
20 */
21struct scsi_dev_info_list {
22 struct list_head dev_info_list;
23 char vendor[8];
24 char model[16];
25 blist_flags_t flags;
26 unsigned compatible; /* for use with scsi_static_device_list entries */
27};
28
29struct scsi_dev_info_list_table {
30 struct list_head node; /* our node for being on the master list */
31 struct list_head scsi_dev_info_list; /* head of dev info list */
32 const char *name; /* name of list for /proc (NULL for global) */
33 int key; /* unique numeric identifier */
34};
35
36
37static blist_flags_t scsi_default_dev_flags;
38static LIST_HEAD(scsi_dev_info_list);
39static char scsi_dev_flags[256];
40
41/*
42 * scsi_static_device_list: 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 */
50static 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 {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES |
243 BLIST_INQUIRY_36},
244 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
245 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
246 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
247 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
248 {"SUN", "T300", "*", BLIST_SPARSELUN},
249 {"SUN", "T4", "*", BLIST_SPARSELUN},
250 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
251 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
252 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
253 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
254 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
255 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
256 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
257 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
258 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
259 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
260 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
261 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
262 { NULL, NULL, NULL, 0 },
263};
264
265static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
266{
267 struct scsi_dev_info_list_table *devinfo_table;
268 int found = 0;
269
270 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
271 if (devinfo_table->key == key) {
272 found = 1;
273 break;
274 }
275 if (!found)
276 return ERR_PTR(-EINVAL);
277
278 return devinfo_table;
279}
280
281/*
282 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
283 * devinfo vendor and model strings.
284 */
285static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
286 char *from, int compatible)
287{
288 size_t from_length;
289
290 from_length = strlen(from);
291 /* This zero-pads the destination */
292 strncpy(to, from, to_length);
293 if (from_length < to_length && !compatible) {
294 /*
295 * space pad the string if it is short.
296 */
297 memset(&to[from_length], ' ', to_length - from_length);
298 }
299 if (from_length > to_length)
300 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
301 __func__, name, from);
302}
303
304/**
305 * scsi_dev_info_list_add - add one dev_info list entry.
306 * @compatible: if true, null terminate short strings. Otherwise space pad.
307 * @vendor: vendor string
308 * @model: model (product) string
309 * @strflags: integer string
310 * @flags: if strflags NULL, use this flag value
311 *
312 * Description:
313 * Create and add one dev_info entry for @vendor, @model, @strflags or
314 * @flag. If @compatible, add to the tail of the list, do not space
315 * pad, and set devinfo->compatible. The scsi_static_device_list entries
316 * are added with @compatible 1 and @clfags NULL.
317 *
318 * Returns: 0 OK, -error on failure.
319 **/
320static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
321 char *strflags, blist_flags_t flags)
322{
323 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
324 strflags, flags,
325 SCSI_DEVINFO_GLOBAL);
326}
327
328/**
329 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
330 * @compatible: if true, null terminate short strings. Otherwise space pad.
331 * @vendor: vendor string
332 * @model: model (product) string
333 * @strflags: integer string
334 * @flags: if strflags NULL, use this flag value
335 * @key: specify list to use
336 *
337 * Description:
338 * Create and add one dev_info entry for @vendor, @model,
339 * @strflags or @flag in list specified by @key. If @compatible,
340 * add to the tail of the list, do not space pad, and set
341 * devinfo->compatible. The scsi_static_device_list entries are
342 * added with @compatible 1 and @clfags NULL.
343 *
344 * Returns: 0 OK, -error on failure.
345 **/
346int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
347 char *strflags, blist_flags_t flags,
348 enum scsi_devinfo_key key)
349{
350 struct scsi_dev_info_list *devinfo;
351 struct scsi_dev_info_list_table *devinfo_table =
352 scsi_devinfo_lookup_by_key(key);
353
354 if (IS_ERR(devinfo_table))
355 return PTR_ERR(devinfo_table);
356
357 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
358 if (!devinfo) {
359 printk(KERN_ERR "%s: no memory\n", __func__);
360 return -ENOMEM;
361 }
362
363 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
364 vendor, compatible);
365 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
366 model, compatible);
367
368 if (strflags) {
369 unsigned long long val;
370 int ret = kstrtoull(strflags, 0, &val);
371
372 if (ret != 0) {
373 kfree(devinfo);
374 return ret;
375 }
376 flags = (__force blist_flags_t)val;
377 }
378 if (flags & __BLIST_UNUSED_MASK) {
379 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx",
380 vendor, model, flags & __BLIST_UNUSED_MASK);
381 kfree(devinfo);
382 return -EINVAL;
383 }
384 devinfo->flags = flags;
385 devinfo->compatible = compatible;
386
387 if (compatible)
388 list_add_tail(&devinfo->dev_info_list,
389 &devinfo_table->scsi_dev_info_list);
390 else
391 list_add(&devinfo->dev_info_list,
392 &devinfo_table->scsi_dev_info_list);
393
394 return 0;
395}
396EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
397
398/**
399 * scsi_dev_info_list_find - find a matching dev_info list entry.
400 * @vendor: full vendor string
401 * @model: full model (product) string
402 * @key: specify list to use
403 *
404 * Description:
405 * Finds the first dev_info entry matching @vendor, @model
406 * in list specified by @key.
407 *
408 * Returns: pointer to matching entry, or ERR_PTR on failure.
409 **/
410static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
411 const char *model, enum scsi_devinfo_key key)
412{
413 struct scsi_dev_info_list *devinfo;
414 struct scsi_dev_info_list_table *devinfo_table =
415 scsi_devinfo_lookup_by_key(key);
416 size_t vmax, mmax, mlen;
417 const char *vskip, *mskip;
418
419 if (IS_ERR(devinfo_table))
420 return (struct scsi_dev_info_list *) devinfo_table;
421
422 /* Prepare for "compatible" matches */
423
424 /*
425 * XXX why skip leading spaces? If an odd INQUIRY
426 * value, that should have been part of the
427 * scsi_static_device_list[] entry, such as " FOO"
428 * rather than "FOO". Since this code is already
429 * here, and we don't know what device it is
430 * trying to work with, leave it as-is.
431 */
432 vmax = sizeof(devinfo->vendor);
433 vskip = vendor;
434 while (vmax > 0 && *vskip == ' ') {
435 vmax--;
436 vskip++;
437 }
438 /* Also skip trailing spaces */
439 while (vmax > 0 && vskip[vmax - 1] == ' ')
440 --vmax;
441
442 mmax = sizeof(devinfo->model);
443 mskip = model;
444 while (mmax > 0 && *mskip == ' ') {
445 mmax--;
446 mskip++;
447 }
448 while (mmax > 0 && mskip[mmax - 1] == ' ')
449 --mmax;
450
451 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
452 dev_info_list) {
453 if (devinfo->compatible) {
454 /*
455 * vendor strings must be an exact match
456 */
457 if (vmax != strnlen(devinfo->vendor,
458 sizeof(devinfo->vendor)) ||
459 memcmp(devinfo->vendor, vskip, vmax))
460 continue;
461
462 /*
463 * @model specifies the full string, and
464 * must be larger or equal to devinfo->model
465 */
466 mlen = strnlen(devinfo->model, sizeof(devinfo->model));
467 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen))
468 continue;
469 return devinfo;
470 } else {
471 if (!memcmp(devinfo->vendor, vendor,
472 sizeof(devinfo->vendor)) &&
473 !memcmp(devinfo->model, model,
474 sizeof(devinfo->model)))
475 return devinfo;
476 }
477 }
478
479 return ERR_PTR(-ENOENT);
480}
481
482/**
483 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
484 * @vendor: vendor string
485 * @model: model (product) string
486 * @key: specify list to use
487 *
488 * Description:
489 * Remove and destroy one dev_info entry for @vendor, @model
490 * in list specified by @key.
491 *
492 * Returns: 0 OK, -error on failure.
493 **/
494int scsi_dev_info_list_del_keyed(char *vendor, char *model,
495 enum scsi_devinfo_key key)
496{
497 struct scsi_dev_info_list *found;
498
499 found = scsi_dev_info_list_find(vendor, model, key);
500 if (IS_ERR(found))
501 return PTR_ERR(found);
502
503 list_del(&found->dev_info_list);
504 kfree(found);
505 return 0;
506}
507EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
508
509/**
510 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
511 * @dev_list: string of device flags to add
512 *
513 * Description:
514 * Parse dev_list, and add entries to the scsi_dev_info_list.
515 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
516 * dev_list is modified via strsep. Can be called for command line
517 * addition, for proc or mabye a sysfs interface.
518 *
519 * Returns: 0 if OK, -error on failure.
520 **/
521static int scsi_dev_info_list_add_str(char *dev_list)
522{
523 char *vendor, *model, *strflags, *next;
524 char *next_check;
525 int res = 0;
526
527 next = dev_list;
528 if (next && next[0] == '"') {
529 /*
530 * Ignore both the leading and trailing quote.
531 */
532 next++;
533 next_check = ",\"";
534 } else {
535 next_check = ",";
536 }
537
538 /*
539 * For the leading and trailing '"' case, the for loop comes
540 * through the last time with vendor[0] == '\0'.
541 */
542 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
543 && (res == 0); vendor = strsep(&next, ":")) {
544 strflags = NULL;
545 model = strsep(&next, ":");
546 if (model)
547 strflags = strsep(&next, next_check);
548 if (!model || !strflags) {
549 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
550 " '%s'\n", __func__, vendor, model,
551 strflags);
552 res = -EINVAL;
553 } else
554 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
555 model, strflags, 0);
556 }
557 return res;
558}
559
560/**
561 * get_device_flags - get device specific flags from the dynamic device list.
562 * @sdev: &scsi_device to get flags for
563 * @vendor: vendor name
564 * @model: model name
565 *
566 * Description:
567 * Search the global scsi_dev_info_list (specified by list zero)
568 * for an entry matching @vendor and @model, if found, return the
569 * matching flags value, else return the host or global default
570 * settings. Called during scan time.
571 **/
572blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
573 const unsigned char *vendor,
574 const unsigned char *model)
575{
576 return scsi_get_device_flags_keyed(sdev, vendor, model,
577 SCSI_DEVINFO_GLOBAL);
578}
579
580
581/**
582 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
583 * @sdev: &scsi_device to get flags for
584 * @vendor: vendor name
585 * @model: model name
586 * @key: list to look up
587 *
588 * Description:
589 * Search the scsi_dev_info_list specified by @key for an entry
590 * matching @vendor and @model, if found, return the matching
591 * flags value, else return the host or global default settings.
592 * Called during scan time.
593 **/
594blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
595 const unsigned char *vendor,
596 const unsigned char *model,
597 enum scsi_devinfo_key key)
598{
599 struct scsi_dev_info_list *devinfo;
600
601 devinfo = scsi_dev_info_list_find(vendor, model, key);
602 if (!IS_ERR(devinfo))
603 return devinfo->flags;
604
605 /* key or device not found: return nothing */
606 if (key != SCSI_DEVINFO_GLOBAL)
607 return 0;
608
609 /* except for the global list, where we have an exception */
610 if (sdev->sdev_bflags)
611 return sdev->sdev_bflags;
612
613 return scsi_default_dev_flags;
614}
615EXPORT_SYMBOL(scsi_get_device_flags_keyed);
616
617#ifdef CONFIG_SCSI_PROC_FS
618struct double_list {
619 struct list_head *top;
620 struct list_head *bottom;
621};
622
623static int devinfo_seq_show(struct seq_file *m, void *v)
624{
625 struct double_list *dl = v;
626 struct scsi_dev_info_list_table *devinfo_table =
627 list_entry(dl->top, struct scsi_dev_info_list_table, node);
628 struct scsi_dev_info_list *devinfo =
629 list_entry(dl->bottom, struct scsi_dev_info_list,
630 dev_info_list);
631
632 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
633 devinfo_table->name)
634 seq_printf(m, "[%s]:\n", devinfo_table->name);
635
636 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n",
637 devinfo->vendor, devinfo->model, devinfo->flags);
638 return 0;
639}
640
641static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
642{
643 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
644 loff_t pos = *ppos;
645
646 if (!dl)
647 return NULL;
648
649 list_for_each(dl->top, &scsi_dev_info_list) {
650 struct scsi_dev_info_list_table *devinfo_table =
651 list_entry(dl->top, struct scsi_dev_info_list_table,
652 node);
653 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
654 if (pos-- == 0)
655 return dl;
656 }
657
658 kfree(dl);
659 return NULL;
660}
661
662static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
663{
664 struct double_list *dl = v;
665 struct scsi_dev_info_list_table *devinfo_table =
666 list_entry(dl->top, struct scsi_dev_info_list_table, node);
667
668 ++*ppos;
669 dl->bottom = dl->bottom->next;
670 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
671 dl->top = dl->top->next;
672 if (dl->top == &scsi_dev_info_list) {
673 kfree(dl);
674 return NULL;
675 }
676 devinfo_table = list_entry(dl->top,
677 struct scsi_dev_info_list_table,
678 node);
679 dl->bottom = devinfo_table->scsi_dev_info_list.next;
680 }
681
682 return dl;
683}
684
685static void devinfo_seq_stop(struct seq_file *m, void *v)
686{
687 kfree(v);
688}
689
690static const struct seq_operations scsi_devinfo_seq_ops = {
691 .start = devinfo_seq_start,
692 .next = devinfo_seq_next,
693 .stop = devinfo_seq_stop,
694 .show = devinfo_seq_show,
695};
696
697static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
698{
699 return seq_open(file, &scsi_devinfo_seq_ops);
700}
701
702/*
703 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
704 *
705 * Description: Adds a black/white list entry for vendor and model with an
706 * integer value of flag to the scsi device info list.
707 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
708 */
709static ssize_t proc_scsi_devinfo_write(struct file *file,
710 const char __user *buf,
711 size_t length, loff_t *ppos)
712{
713 char *buffer;
714 ssize_t err = length;
715
716 if (!buf || length>PAGE_SIZE)
717 return -EINVAL;
718 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
719 return -ENOMEM;
720 if (copy_from_user(buffer, buf, length)) {
721 err =-EFAULT;
722 goto out;
723 }
724
725 if (length < PAGE_SIZE)
726 buffer[length] = '\0';
727 else if (buffer[PAGE_SIZE-1]) {
728 err = -EINVAL;
729 goto out;
730 }
731
732 scsi_dev_info_list_add_str(buffer);
733
734out:
735 free_page((unsigned long)buffer);
736 return err;
737}
738
739static const struct file_operations scsi_devinfo_proc_fops = {
740 .owner = THIS_MODULE,
741 .open = proc_scsi_devinfo_open,
742 .read = seq_read,
743 .write = proc_scsi_devinfo_write,
744 .llseek = seq_lseek,
745 .release = seq_release,
746};
747#endif /* CONFIG_SCSI_PROC_FS */
748
749module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
750MODULE_PARM_DESC(dev_flags,
751 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
752 " list entries for vendor and model with an integer value of flags"
753 " to the scsi device info list");
754
755module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644);
756MODULE_PARM_DESC(default_dev_flags,
757 "scsi default device flag uint64_t value");
758
759/**
760 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
761 **/
762void scsi_exit_devinfo(void)
763{
764#ifdef CONFIG_SCSI_PROC_FS
765 remove_proc_entry("scsi/device_info", NULL);
766#endif
767
768 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
769}
770
771/**
772 * scsi_dev_info_add_list - add a new devinfo list
773 * @key: key of the list to add
774 * @name: Name of the list to add (for /proc/scsi/device_info)
775 *
776 * Adds the requested list, returns zero on success, -EEXIST if the
777 * key is already registered to a list, or other error on failure.
778 */
779int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name)
780{
781 struct scsi_dev_info_list_table *devinfo_table =
782 scsi_devinfo_lookup_by_key(key);
783
784 if (!IS_ERR(devinfo_table))
785 /* list already exists */
786 return -EEXIST;
787
788 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
789
790 if (!devinfo_table)
791 return -ENOMEM;
792
793 INIT_LIST_HEAD(&devinfo_table->node);
794 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
795 devinfo_table->name = name;
796 devinfo_table->key = key;
797 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
798
799 return 0;
800}
801EXPORT_SYMBOL(scsi_dev_info_add_list);
802
803/**
804 * scsi_dev_info_remove_list - destroy an added devinfo list
805 * @key: key of the list to destroy
806 *
807 * Iterates over the entire list first, freeing all the values, then
808 * frees the list itself. Returns 0 on success or -EINVAL if the key
809 * can't be found.
810 */
811int scsi_dev_info_remove_list(enum scsi_devinfo_key key)
812{
813 struct list_head *lh, *lh_next;
814 struct scsi_dev_info_list_table *devinfo_table =
815 scsi_devinfo_lookup_by_key(key);
816
817 if (IS_ERR(devinfo_table))
818 /* no such list */
819 return -EINVAL;
820
821 /* remove from the master list */
822 list_del(&devinfo_table->node);
823
824 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
825 struct scsi_dev_info_list *devinfo;
826
827 devinfo = list_entry(lh, struct scsi_dev_info_list,
828 dev_info_list);
829 kfree(devinfo);
830 }
831 kfree(devinfo_table);
832
833 return 0;
834}
835EXPORT_SYMBOL(scsi_dev_info_remove_list);
836
837/**
838 * scsi_init_devinfo - set up the dynamic device list.
839 *
840 * Description:
841 * Add command line entries from scsi_dev_flags, then add
842 * scsi_static_device_list entries to the scsi device info list.
843 */
844int __init scsi_init_devinfo(void)
845{
846#ifdef CONFIG_SCSI_PROC_FS
847 struct proc_dir_entry *p;
848#endif
849 int error, i;
850
851 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
852 if (error)
853 return error;
854
855 error = scsi_dev_info_list_add_str(scsi_dev_flags);
856 if (error)
857 goto out;
858
859 for (i = 0; scsi_static_device_list[i].vendor; i++) {
860 error = scsi_dev_info_list_add(1 /* compatibile */,
861 scsi_static_device_list[i].vendor,
862 scsi_static_device_list[i].model,
863 NULL,
864 scsi_static_device_list[i].flags);
865 if (error)
866 goto out;
867 }
868
869#ifdef CONFIG_SCSI_PROC_FS
870 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
871 if (!p) {
872 error = -ENOMEM;
873 goto out;
874 }
875#endif /* CONFIG_SCSI_PROC_FS */
876
877 out:
878 if (error)
879 scsi_exit_devinfo();
880 return error;
881}