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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", "HUS1530", "*", BLIST_NO_DIF},
176 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
177 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
178 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
179 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
180 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
181 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
182 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
183 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
184 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
185 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
186 {"HP", "C1557A", NULL, BLIST_FORCELUN},
187 {"HP", "C3323-300", "4269", BLIST_NOTQ},
188 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
189 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
190 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
191 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
192 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
193 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
194 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
195 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
196 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
197 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
198 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
199 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
200 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
201 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
202 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
203 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
204 {"INSITE", "I325VM", NULL, BLIST_KEY},
205 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
206 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
207 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
208 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
209 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES},
210 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
211 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
212 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
213 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
214 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
215 {"MICROP", "4110", NULL, BLIST_NOTQ},
216 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC},
217 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
218 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
219 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
221 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
222 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
223 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
224 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
225 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
226 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
227 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
228 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
229 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
230 {"Promise", "", NULL, BLIST_SPARSELUN},
231 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
232 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
233 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
234 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
235 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
236 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
237 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
238 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
239 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
240 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
241 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
242 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
243 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
244 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
245 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
246 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
247 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
248 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
249 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
250 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
251 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
252 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
253 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
254 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
255 {"SUN", "T300", "*", BLIST_SPARSELUN},
256 {"SUN", "T4", "*", BLIST_SPARSELUN},
257 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
258 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
259 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
260 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
261 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
262 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
263 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
264 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
265 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
266 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
267 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
268 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
269 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
270 { NULL, NULL, NULL, 0 },
271};
272
273static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
274{
275 struct scsi_dev_info_list_table *devinfo_table;
276 int found = 0;
277
278 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
279 if (devinfo_table->key == key) {
280 found = 1;
281 break;
282 }
283 if (!found)
284 return ERR_PTR(-EINVAL);
285
286 return devinfo_table;
287}
288
289/*
290 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
291 * devinfo vendor and model strings.
292 */
293static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
294 char *from, int compatible)
295{
296 size_t from_length;
297
298 from_length = strlen(from);
299 strncpy(to, from, min(to_length, from_length));
300 if (from_length < to_length) {
301 if (compatible) {
302 /*
303 * NUL terminate the string if it is short.
304 */
305 to[from_length] = '\0';
306 } else {
307 /*
308 * space pad the string if it is short.
309 */
310 strncpy(&to[from_length], spaces,
311 to_length - from_length);
312 }
313 }
314 if (from_length > to_length)
315 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
316 __func__, name, from);
317}
318
319/**
320 * scsi_dev_info_list_add - add one dev_info list entry.
321 * @compatible: if true, null terminate short strings. Otherwise space pad.
322 * @vendor: vendor string
323 * @model: model (product) string
324 * @strflags: integer string
325 * @flags: if strflags NULL, use this flag value
326 *
327 * Description:
328 * Create and add one dev_info entry for @vendor, @model, @strflags or
329 * @flag. If @compatible, add to the tail of the list, do not space
330 * pad, and set devinfo->compatible. The scsi_static_device_list entries
331 * are added with @compatible 1 and @clfags NULL.
332 *
333 * Returns: 0 OK, -error on failure.
334 **/
335static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
336 char *strflags, int flags)
337{
338 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
339 strflags, flags,
340 SCSI_DEVINFO_GLOBAL);
341}
342
343/**
344 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
345 * @compatible: if true, null terminate short strings. Otherwise space pad.
346 * @vendor: vendor string
347 * @model: model (product) string
348 * @strflags: integer string
349 * @flags: if strflags NULL, use this flag value
350 * @key: specify list to use
351 *
352 * Description:
353 * Create and add one dev_info entry for @vendor, @model,
354 * @strflags or @flag in list specified by @key. If @compatible,
355 * add to the tail of the list, do not space pad, and set
356 * devinfo->compatible. The scsi_static_device_list entries are
357 * added with @compatible 1 and @clfags NULL.
358 *
359 * Returns: 0 OK, -error on failure.
360 **/
361int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
362 char *strflags, int flags, int key)
363{
364 struct scsi_dev_info_list *devinfo;
365 struct scsi_dev_info_list_table *devinfo_table =
366 scsi_devinfo_lookup_by_key(key);
367
368 if (IS_ERR(devinfo_table))
369 return PTR_ERR(devinfo_table);
370
371 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
372 if (!devinfo) {
373 printk(KERN_ERR "%s: no memory\n", __func__);
374 return -ENOMEM;
375 }
376
377 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
378 vendor, compatible);
379 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
380 model, compatible);
381
382 if (strflags)
383 devinfo->flags = simple_strtoul(strflags, NULL, 0);
384 else
385 devinfo->flags = flags;
386
387 devinfo->compatible = compatible;
388
389 if (compatible)
390 list_add_tail(&devinfo->dev_info_list,
391 &devinfo_table->scsi_dev_info_list);
392 else
393 list_add(&devinfo->dev_info_list,
394 &devinfo_table->scsi_dev_info_list);
395
396 return 0;
397}
398EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
399
400/**
401 * scsi_dev_info_list_find - find a matching dev_info list entry.
402 * @vendor: vendor string
403 * @model: model (product) string
404 * @key: specify list to use
405 *
406 * Description:
407 * Finds the first dev_info entry matching @vendor, @model
408 * in list specified by @key.
409 *
410 * Returns: pointer to matching entry, or ERR_PTR on failure.
411 **/
412static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
413 const char *model, int key)
414{
415 struct scsi_dev_info_list *devinfo;
416 struct scsi_dev_info_list_table *devinfo_table =
417 scsi_devinfo_lookup_by_key(key);
418 size_t vmax, mmax;
419 const char *vskip, *mskip;
420
421 if (IS_ERR(devinfo_table))
422 return (struct scsi_dev_info_list *) devinfo_table;
423
424 /* Prepare for "compatible" matches */
425
426 /*
427 * XXX why skip leading spaces? If an odd INQUIRY
428 * value, that should have been part of the
429 * scsi_static_device_list[] entry, such as " FOO"
430 * rather than "FOO". Since this code is already
431 * here, and we don't know what device it is
432 * trying to work with, leave it as-is.
433 */
434 vmax = sizeof(devinfo->vendor);
435 vskip = vendor;
436 while (vmax > 0 && *vskip == ' ') {
437 vmax--;
438 vskip++;
439 }
440 /* Also skip trailing spaces */
441 while (vmax > 0 && vskip[vmax - 1] == ' ')
442 --vmax;
443
444 mmax = sizeof(devinfo->model);
445 mskip = model;
446 while (mmax > 0 && *mskip == ' ') {
447 mmax--;
448 mskip++;
449 }
450 while (mmax > 0 && mskip[mmax - 1] == ' ')
451 --mmax;
452
453 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
454 dev_info_list) {
455 if (devinfo->compatible) {
456 /*
457 * Behave like the older version of get_device_flags.
458 */
459 if (memcmp(devinfo->vendor, vskip, vmax) ||
460 (vmax < sizeof(devinfo->vendor) &&
461 devinfo->vendor[vmax]))
462 continue;
463 if (memcmp(devinfo->model, mskip, mmax) ||
464 (mmax < sizeof(devinfo->model) &&
465 devinfo->model[mmax]))
466 continue;
467 return devinfo;
468 } else {
469 if (!memcmp(devinfo->vendor, vendor,
470 sizeof(devinfo->vendor)) &&
471 !memcmp(devinfo->model, model,
472 sizeof(devinfo->model)))
473 return devinfo;
474 }
475 }
476
477 return ERR_PTR(-ENOENT);
478}
479
480/**
481 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
482 * @vendor: vendor string
483 * @model: model (product) string
484 * @key: specify list to use
485 *
486 * Description:
487 * Remove and destroy one dev_info entry for @vendor, @model
488 * in list specified by @key.
489 *
490 * Returns: 0 OK, -error on failure.
491 **/
492int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
493{
494 struct scsi_dev_info_list *found;
495
496 found = scsi_dev_info_list_find(vendor, model, key);
497 if (IS_ERR(found))
498 return PTR_ERR(found);
499
500 list_del(&found->dev_info_list);
501 kfree(found);
502 return 0;
503}
504EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
505
506/**
507 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
508 * @dev_list: string of device flags to add
509 *
510 * Description:
511 * Parse dev_list, and add entries to the scsi_dev_info_list.
512 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
513 * dev_list is modified via strsep. Can be called for command line
514 * addition, for proc or mabye a sysfs interface.
515 *
516 * Returns: 0 if OK, -error on failure.
517 **/
518static int scsi_dev_info_list_add_str(char *dev_list)
519{
520 char *vendor, *model, *strflags, *next;
521 char *next_check;
522 int res = 0;
523
524 next = dev_list;
525 if (next && next[0] == '"') {
526 /*
527 * Ignore both the leading and trailing quote.
528 */
529 next++;
530 next_check = ",\"";
531 } else {
532 next_check = ",";
533 }
534
535 /*
536 * For the leading and trailing '"' case, the for loop comes
537 * through the last time with vendor[0] == '\0'.
538 */
539 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
540 && (res == 0); vendor = strsep(&next, ":")) {
541 strflags = NULL;
542 model = strsep(&next, ":");
543 if (model)
544 strflags = strsep(&next, next_check);
545 if (!model || !strflags) {
546 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
547 " '%s'\n", __func__, vendor, model,
548 strflags);
549 res = -EINVAL;
550 } else
551 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
552 model, strflags, 0);
553 }
554 return res;
555}
556
557/**
558 * get_device_flags - get device specific flags from the dynamic device list.
559 * @sdev: &scsi_device to get flags for
560 * @vendor: vendor name
561 * @model: model name
562 *
563 * Description:
564 * Search the global scsi_dev_info_list (specified by list zero)
565 * for an entry matching @vendor and @model, if found, return the
566 * matching flags value, else return the host or global default
567 * settings. Called during scan time.
568 **/
569int scsi_get_device_flags(struct scsi_device *sdev,
570 const unsigned char *vendor,
571 const unsigned char *model)
572{
573 return scsi_get_device_flags_keyed(sdev, vendor, model,
574 SCSI_DEVINFO_GLOBAL);
575}
576
577
578/**
579 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
580 * @sdev: &scsi_device to get flags for
581 * @vendor: vendor name
582 * @model: model name
583 * @key: list to look up
584 *
585 * Description:
586 * Search the scsi_dev_info_list specified by @key for an entry
587 * matching @vendor and @model, if found, return the matching
588 * flags value, else return the host or global default settings.
589 * Called during scan time.
590 **/
591int scsi_get_device_flags_keyed(struct scsi_device *sdev,
592 const unsigned char *vendor,
593 const unsigned char *model,
594 int key)
595{
596 struct scsi_dev_info_list *devinfo;
597 int err;
598
599 devinfo = scsi_dev_info_list_find(vendor, model, key);
600 if (!IS_ERR(devinfo))
601 return devinfo->flags;
602
603 err = PTR_ERR(devinfo);
604 if (err != -ENOENT)
605 return err;
606
607 /* nothing found, return nothing */
608 if (key != SCSI_DEVINFO_GLOBAL)
609 return 0;
610
611 /* except for the global list, where we have an exception */
612 if (sdev->sdev_bflags)
613 return sdev->sdev_bflags;
614
615 return scsi_default_dev_flags;
616}
617EXPORT_SYMBOL(scsi_get_device_flags_keyed);
618
619#ifdef CONFIG_SCSI_PROC_FS
620struct double_list {
621 struct list_head *top;
622 struct list_head *bottom;
623};
624
625static 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%x\n",
639 devinfo->vendor, devinfo->model, devinfo->flags);
640 return 0;
641}
642
643static 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
664static 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
687static void devinfo_seq_stop(struct seq_file *m, void *v)
688{
689 kfree(v);
690}
691
692static 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
699static 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 */
711static 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
736out:
737 free_page((unsigned long)buffer);
738 return err;
739}
740
741static const struct file_operations scsi_devinfo_proc_fops = {
742 .owner = THIS_MODULE,
743 .open = proc_scsi_devinfo_open,
744 .read = seq_read,
745 .write = proc_scsi_devinfo_write,
746 .llseek = seq_lseek,
747 .release = seq_release,
748};
749#endif /* CONFIG_SCSI_PROC_FS */
750
751module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
752MODULE_PARM_DESC(dev_flags,
753 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
754 " list entries for vendor and model with an integer value of flags"
755 " to the scsi device info list");
756
757module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
758MODULE_PARM_DESC(default_dev_flags,
759 "scsi default device flag integer value");
760
761/**
762 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
763 **/
764void scsi_exit_devinfo(void)
765{
766#ifdef CONFIG_SCSI_PROC_FS
767 remove_proc_entry("scsi/device_info", NULL);
768#endif
769
770 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
771}
772
773/**
774 * scsi_dev_info_add_list - add a new devinfo list
775 * @key: key of the list to add
776 * @name: Name of the list to add (for /proc/scsi/device_info)
777 *
778 * Adds the requested list, returns zero on success, -EEXIST if the
779 * key is already registered to a list, or other error on failure.
780 */
781int scsi_dev_info_add_list(int key, const char *name)
782{
783 struct scsi_dev_info_list_table *devinfo_table =
784 scsi_devinfo_lookup_by_key(key);
785
786 if (!IS_ERR(devinfo_table))
787 /* list already exists */
788 return -EEXIST;
789
790 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
791
792 if (!devinfo_table)
793 return -ENOMEM;
794
795 INIT_LIST_HEAD(&devinfo_table->node);
796 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
797 devinfo_table->name = name;
798 devinfo_table->key = key;
799 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
800
801 return 0;
802}
803EXPORT_SYMBOL(scsi_dev_info_add_list);
804
805/**
806 * scsi_dev_info_remove_list - destroy an added devinfo list
807 * @key: key of the list to destroy
808 *
809 * Iterates over the entire list first, freeing all the values, then
810 * frees the list itself. Returns 0 on success or -EINVAL if the key
811 * can't be found.
812 */
813int scsi_dev_info_remove_list(int key)
814{
815 struct list_head *lh, *lh_next;
816 struct scsi_dev_info_list_table *devinfo_table =
817 scsi_devinfo_lookup_by_key(key);
818
819 if (IS_ERR(devinfo_table))
820 /* no such list */
821 return -EINVAL;
822
823 /* remove from the master list */
824 list_del(&devinfo_table->node);
825
826 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
827 struct scsi_dev_info_list *devinfo;
828
829 devinfo = list_entry(lh, struct scsi_dev_info_list,
830 dev_info_list);
831 kfree(devinfo);
832 }
833 kfree(devinfo_table);
834
835 return 0;
836}
837EXPORT_SYMBOL(scsi_dev_info_remove_list);
838
839/**
840 * scsi_init_devinfo - set up the dynamic device list.
841 *
842 * Description:
843 * Add command line entries from scsi_dev_flags, then add
844 * scsi_static_device_list entries to the scsi device info list.
845 */
846int __init scsi_init_devinfo(void)
847{
848#ifdef CONFIG_SCSI_PROC_FS
849 struct proc_dir_entry *p;
850#endif
851 int error, i;
852
853 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
854 if (error)
855 return error;
856
857 error = scsi_dev_info_list_add_str(scsi_dev_flags);
858 if (error)
859 goto out;
860
861 for (i = 0; scsi_static_device_list[i].vendor; i++) {
862 error = scsi_dev_info_list_add(1 /* compatibile */,
863 scsi_static_device_list[i].vendor,
864 scsi_static_device_list[i].model,
865 NULL,
866 scsi_static_device_list[i].flags);
867 if (error)
868 goto out;
869 }
870
871#ifdef CONFIG_SCSI_PROC_FS
872 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
873 if (!p) {
874 error = -ENOMEM;
875 goto out;
876 }
877#endif /* CONFIG_SCSI_PROC_FS */
878
879 out:
880 if (error)
881 scsi_exit_devinfo();
882 return error;
883}
1// SPDX-License-Identifier: GPL-2.0
2
3#include <linux/blkdev.h>
4#include <linux/init.h>
5#include <linux/kernel.h>
6#include <linux/module.h>
7#include <linux/moduleparam.h>
8#include <linux/proc_fs.h>
9#include <linux/seq_file.h>
10#include <linux/slab.h>
11
12#include <scsi/scsi_device.h>
13#include <scsi/scsi_devinfo.h>
14
15#include "scsi_priv.h"
16
17
18/*
19 * scsi_dev_info_list: structure to hold black/white listed devices.
20 */
21struct scsi_dev_info_list {
22 struct list_head dev_info_list;
23 char vendor[8];
24 char model[16];
25 blist_flags_t flags;
26 unsigned compatible; /* for use with scsi_static_device_list entries */
27};
28
29struct scsi_dev_info_list_table {
30 struct list_head node; /* our node for being on the master list */
31 struct list_head scsi_dev_info_list; /* head of dev info list */
32 const char *name; /* name of list for /proc (NULL for global) */
33 int key; /* unique numeric identifier */
34};
35
36
37static blist_flags_t scsi_default_dev_flags;
38static LIST_HEAD(scsi_dev_info_list);
39static char scsi_dev_flags[256];
40
41/*
42 * scsi_static_device_list: list of devices that require settings that differ
43 * from the default, includes black-listed (broken) devices. The entries here
44 * are added to the tail of scsi_dev_info_list via scsi_dev_info_list_init.
45 *
46 * If possible, set the BLIST_* flags from inside a SCSI LLD rather than
47 * adding an entry to this list.
48 */
49static struct {
50 char *vendor;
51 char *model;
52 char *revision; /* revision known to be bad, unused */
53 blist_flags_t flags;
54} scsi_static_device_list[] __initdata = {
55 /*
56 * The following devices are known not to tolerate a lun != 0 scan
57 * for one reason or another. Some will respond to all luns,
58 * others will lock up.
59 */
60 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */
61 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */
62 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */
63 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */
64 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */
65 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */
66 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */
67 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */
68 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */
69 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */
70 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */
71 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */
72 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */
73 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */
74 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */
75 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */
76 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
77 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */
78 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */
79 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */
80 /*
81 * The following causes a failed REQUEST SENSE on lun 1 for
82 * aha152x controller, which causes SCSI code to reset bus.
83 */
84 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
85 /*
86 * The following causes a failed REQUEST SENSE on lun 1 for
87 * aha152x controller, which causes SCSI code to reset bus.
88 */
89 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
90 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */
91 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */
92 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
93 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
94 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
95 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
96 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN},
97 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */
98 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */
99 /*
100 * The following causes a failed REQUEST SENSE on lun 1 for
101 * seagate controller, which causes SCSI code to reset bus.
102 */
103 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
104 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */
105 /*
106 * The following causes a failed REQUEST SENSE on lun 1 for
107 * seagate controller, which causes SCSI code to reset bus.
108 */
109 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */
110 {"HP", "C1790A", NULL, BLIST_NOLUN}, /* scanjet iip */
111 {"HP", "C2500A", NULL, BLIST_NOLUN}, /* scanjet iicx */
112 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */
113 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */
114 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */
115 {"NEC", "D3856", "0009", BLIST_NOLUN},
116 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */
117 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */
118 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */
119 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */
120 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */
121 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN | BLIST_BORKEN},
122 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
123 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */
124 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */
125 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */
126 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */
127 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */
128
129 /*
130 * Other types of devices that have special flags.
131 * Note that all USB devices should have the BLIST_INQUIRY_36 flag.
132 */
133 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2},
134 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
135 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
136 {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES | BLIST_NO_VPD_SIZE},
137 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
138 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
139 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
140 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
141 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
142 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
143 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
144 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
145 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
146 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
147 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */
148 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */
149 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
150 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
151 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
152 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
153 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
154 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
155 {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
156 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
157 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
158 {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
159 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
160 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, storage on LUN 0 */
161 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */
162 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
163 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
164 BLIST_REPORTLUN2 | BLIST_RETRY_ITF},
165 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
166 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
167 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
168 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
169 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
170 {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1},
171 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
172 {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */
173 {"Generic", "Ultra HS-SD/MMC", "2.09", BLIST_IGN_MEDIA_CHANGE | BLIST_INQUIRY_36},
174 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
175 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
176 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
177 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
178 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES},
179 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
180 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */
181 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
182 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
183 {"HP", "C1557A", NULL, BLIST_FORCELUN},
184 {"HP", "C3323-300", "4269", BLIST_NOTQ},
185 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
186 {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
187 {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES},
188 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
189 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
190 {"IBM", "2076", NULL, BLIST_NO_VPD_SIZE},
191 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
192 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
193 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
194 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
195 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
196 {"INSITE", "I325VM", NULL, BLIST_KEY},
197 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
198 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
199 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
200 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
201 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES},
202 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
203 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
204 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
205 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
206 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
207 {"MICROP", "4110", NULL, BLIST_NOTQ},
208 {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC},
209 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
210 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
211 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
212 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
213 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
214 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
215 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
216 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
217 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
218 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
221 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
222 {"Promise", "", NULL, BLIST_SPARSELUN},
223 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
224 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
225 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
226 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
227 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
228 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
229 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
230 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
231 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
232 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
233 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
234 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
235 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
236 {"SKhynix", "H28U74301AMR", NULL, BLIST_SKIP_VPD_PAGES},
237 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
238 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
239 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
240 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
241 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
242 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
243 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
244 {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
245 {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
246 {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES |
247 BLIST_INQUIRY_36},
248 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
249 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
250 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
251 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
252 {"SUN", "T300", "*", BLIST_SPARSELUN},
253 {"SUN", "T4", "*", BLIST_SPARSELUN},
254 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
255 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
256 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
257 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
258 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
259 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
260 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
261 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
262 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
263 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
264 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
265 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
266 { NULL, NULL, NULL, 0 },
267};
268
269static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
270{
271 struct scsi_dev_info_list_table *devinfo_table;
272 int found = 0;
273
274 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
275 if (devinfo_table->key == key) {
276 found = 1;
277 break;
278 }
279 if (!found)
280 return ERR_PTR(-EINVAL);
281
282 return devinfo_table;
283}
284
285/*
286 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
287 * devinfo vendor and model strings.
288 */
289static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
290 char *from, int compatible)
291{
292 size_t from_length;
293
294 from_length = strlen(from);
295
296 /*
297 * null pad and null terminate if compatible
298 * otherwise space pad
299 */
300 if (compatible)
301 strscpy_pad(to, from, to_length);
302 else
303 memcpy_and_pad(to, to_length, from, from_length, ' ');
304
305 if (from_length > to_length)
306 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
307 __func__, name, from);
308}
309
310/**
311 * scsi_dev_info_list_add - add one dev_info list entry.
312 * @compatible: if true, null terminate short strings. Otherwise space pad.
313 * @vendor: vendor string
314 * @model: model (product) string
315 * @strflags: integer string
316 * @flags: if strflags NULL, use this flag value
317 *
318 * Description:
319 * Create and add one dev_info entry for @vendor, @model, @strflags or
320 * @flag. If @compatible, add to the tail of the list, do not space
321 * pad, and set devinfo->compatible. The scsi_static_device_list entries
322 * are added with @compatible 1 and @clfags NULL.
323 *
324 * Returns: 0 OK, -error on failure.
325 **/
326static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
327 char *strflags, blist_flags_t flags)
328{
329 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
330 strflags, flags,
331 SCSI_DEVINFO_GLOBAL);
332}
333
334/**
335 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
336 * @compatible: if true, null terminate short strings. Otherwise space pad.
337 * @vendor: vendor string
338 * @model: model (product) string
339 * @strflags: integer string
340 * @flags: if strflags NULL, use this flag value
341 * @key: specify list to use
342 *
343 * Description:
344 * Create and add one dev_info entry for @vendor, @model,
345 * @strflags or @flag in list specified by @key. If @compatible,
346 * add to the tail of the list, do not space pad, and set
347 * devinfo->compatible. The scsi_static_device_list entries are
348 * added with @compatible 1 and @clfags NULL.
349 *
350 * Returns: 0 OK, -error on failure.
351 **/
352int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
353 char *strflags, blist_flags_t flags,
354 enum scsi_devinfo_key key)
355{
356 struct scsi_dev_info_list *devinfo;
357 struct scsi_dev_info_list_table *devinfo_table =
358 scsi_devinfo_lookup_by_key(key);
359
360 if (IS_ERR(devinfo_table))
361 return PTR_ERR(devinfo_table);
362
363 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
364 if (!devinfo) {
365 printk(KERN_ERR "%s: no memory\n", __func__);
366 return -ENOMEM;
367 }
368
369 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
370 vendor, compatible);
371 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
372 model, compatible);
373
374 if (strflags) {
375 unsigned long long val;
376 int ret = kstrtoull(strflags, 0, &val);
377
378 if (ret != 0) {
379 kfree(devinfo);
380 return ret;
381 }
382 flags = (__force blist_flags_t)val;
383 }
384 if (flags & __BLIST_UNUSED_MASK) {
385 pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx",
386 vendor, model, flags & __BLIST_UNUSED_MASK);
387 kfree(devinfo);
388 return -EINVAL;
389 }
390 devinfo->flags = flags;
391 devinfo->compatible = compatible;
392
393 if (compatible)
394 list_add_tail(&devinfo->dev_info_list,
395 &devinfo_table->scsi_dev_info_list);
396 else
397 list_add(&devinfo->dev_info_list,
398 &devinfo_table->scsi_dev_info_list);
399
400 return 0;
401}
402EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
403
404/**
405 * scsi_dev_info_list_find - find a matching dev_info list entry.
406 * @vendor: full vendor string
407 * @model: full model (product) string
408 * @key: specify list to use
409 *
410 * Description:
411 * Finds the first dev_info entry matching @vendor, @model
412 * in list specified by @key.
413 *
414 * Returns: pointer to matching entry, or ERR_PTR on failure.
415 **/
416static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
417 const char *model, enum scsi_devinfo_key key)
418{
419 struct scsi_dev_info_list *devinfo;
420 struct scsi_dev_info_list_table *devinfo_table =
421 scsi_devinfo_lookup_by_key(key);
422 size_t vmax, mmax, mlen;
423 const char *vskip, *mskip;
424
425 if (IS_ERR(devinfo_table))
426 return (struct scsi_dev_info_list *) devinfo_table;
427
428 /* Prepare for "compatible" matches */
429
430 /*
431 * XXX why skip leading spaces? If an odd INQUIRY
432 * value, that should have been part of the
433 * scsi_static_device_list[] entry, such as " FOO"
434 * rather than "FOO". Since this code is already
435 * here, and we don't know what device it is
436 * trying to work with, leave it as-is.
437 */
438 vmax = sizeof(devinfo->vendor);
439 vskip = vendor;
440 while (vmax > 0 && *vskip == ' ') {
441 vmax--;
442 vskip++;
443 }
444 /* Also skip trailing spaces */
445 while (vmax > 0 && vskip[vmax - 1] == ' ')
446 --vmax;
447
448 mmax = sizeof(devinfo->model);
449 mskip = model;
450 while (mmax > 0 && *mskip == ' ') {
451 mmax--;
452 mskip++;
453 }
454 while (mmax > 0 && mskip[mmax - 1] == ' ')
455 --mmax;
456
457 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
458 dev_info_list) {
459 if (devinfo->compatible) {
460 /*
461 * vendor strings must be an exact match
462 */
463 if (vmax != strnlen(devinfo->vendor,
464 sizeof(devinfo->vendor)) ||
465 memcmp(devinfo->vendor, vskip, vmax))
466 continue;
467
468 /*
469 * @model specifies the full string, and
470 * must be larger or equal to devinfo->model
471 */
472 mlen = strnlen(devinfo->model, sizeof(devinfo->model));
473 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen))
474 continue;
475 return devinfo;
476 } else {
477 if (!memcmp(devinfo->vendor, vendor,
478 sizeof(devinfo->vendor)) &&
479 !memcmp(devinfo->model, model,
480 sizeof(devinfo->model)))
481 return devinfo;
482 }
483 }
484
485 return ERR_PTR(-ENOENT);
486}
487
488/**
489 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
490 * @vendor: vendor string
491 * @model: model (product) string
492 * @key: specify list to use
493 *
494 * Description:
495 * Remove and destroy one dev_info entry for @vendor, @model
496 * in list specified by @key.
497 *
498 * Returns: 0 OK, -error on failure.
499 **/
500int scsi_dev_info_list_del_keyed(char *vendor, char *model,
501 enum scsi_devinfo_key key)
502{
503 struct scsi_dev_info_list *found;
504
505 found = scsi_dev_info_list_find(vendor, model, key);
506 if (IS_ERR(found))
507 return PTR_ERR(found);
508
509 list_del(&found->dev_info_list);
510 kfree(found);
511 return 0;
512}
513EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
514
515/**
516 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
517 * @dev_list: string of device flags to add
518 *
519 * Description:
520 * Parse dev_list, and add entries to the scsi_dev_info_list.
521 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
522 * dev_list is modified via strsep. Can be called for command line
523 * addition, for proc or mabye a sysfs interface.
524 *
525 * Returns: 0 if OK, -error on failure.
526 **/
527static int scsi_dev_info_list_add_str(char *dev_list)
528{
529 char *vendor, *model, *strflags, *next;
530 char *next_check;
531 int res = 0;
532
533 next = dev_list;
534 if (next && next[0] == '"') {
535 /*
536 * Ignore both the leading and trailing quote.
537 */
538 next++;
539 next_check = ",\"";
540 } else {
541 next_check = ",";
542 }
543
544 /*
545 * For the leading and trailing '"' case, the for loop comes
546 * through the last time with vendor[0] == '\0'.
547 */
548 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
549 && (res == 0); vendor = strsep(&next, ":")) {
550 strflags = NULL;
551 model = strsep(&next, ":");
552 if (model)
553 strflags = strsep(&next, next_check);
554 if (!model || !strflags) {
555 pr_err("%s: bad dev info string '%s' '%s' '%s'\n",
556 __func__, vendor, model ? model : "",
557 strflags ? strflags : "");
558 res = -EINVAL;
559 } else
560 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
561 model, strflags, 0);
562 }
563 return res;
564}
565
566/**
567 * scsi_get_device_flags - get device specific flags from the dynamic
568 * device list.
569 * @sdev: &scsi_device to get flags for
570 * @vendor: vendor name
571 * @model: model name
572 *
573 * Description:
574 * Search the global scsi_dev_info_list (specified by list zero)
575 * for an entry matching @vendor and @model, if found, return the
576 * matching flags value, else return the host or global default
577 * settings. Called during scan time.
578 **/
579blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
580 const unsigned char *vendor,
581 const unsigned char *model)
582{
583 return scsi_get_device_flags_keyed(sdev, vendor, model,
584 SCSI_DEVINFO_GLOBAL);
585}
586
587
588/**
589 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
590 * @sdev: &scsi_device to get flags for
591 * @vendor: vendor name
592 * @model: model name
593 * @key: list to look up
594 *
595 * Description:
596 * Search the scsi_dev_info_list specified by @key for an entry
597 * matching @vendor and @model, if found, return the matching
598 * flags value, else return the host or global default settings.
599 * Called during scan time.
600 **/
601blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
602 const unsigned char *vendor,
603 const unsigned char *model,
604 enum scsi_devinfo_key key)
605{
606 struct scsi_dev_info_list *devinfo;
607
608 devinfo = scsi_dev_info_list_find(vendor, model, key);
609 if (!IS_ERR(devinfo))
610 return devinfo->flags;
611
612 /* key or device not found: return nothing */
613 if (key != SCSI_DEVINFO_GLOBAL)
614 return 0;
615
616 /* except for the global list, where we have an exception */
617 if (sdev->sdev_bflags)
618 return sdev->sdev_bflags;
619
620 return scsi_default_dev_flags;
621}
622EXPORT_SYMBOL(scsi_get_device_flags_keyed);
623
624#ifdef CONFIG_SCSI_PROC_FS
625struct double_list {
626 struct list_head *top;
627 struct list_head *bottom;
628};
629
630static int devinfo_seq_show(struct seq_file *m, void *v)
631{
632 struct double_list *dl = v;
633 struct scsi_dev_info_list_table *devinfo_table =
634 list_entry(dl->top, struct scsi_dev_info_list_table, node);
635 struct scsi_dev_info_list *devinfo =
636 list_entry(dl->bottom, struct scsi_dev_info_list,
637 dev_info_list);
638
639 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
640 devinfo_table->name)
641 seq_printf(m, "[%s]:\n", devinfo_table->name);
642
643 seq_printf(m, "'%.8s' '%.16s' 0x%llx\n",
644 devinfo->vendor, devinfo->model, devinfo->flags);
645 return 0;
646}
647
648static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
649{
650 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
651 loff_t pos = *ppos;
652
653 if (!dl)
654 return NULL;
655
656 list_for_each(dl->top, &scsi_dev_info_list) {
657 struct scsi_dev_info_list_table *devinfo_table =
658 list_entry(dl->top, struct scsi_dev_info_list_table,
659 node);
660 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
661 if (pos-- == 0)
662 return dl;
663 }
664
665 kfree(dl);
666 return NULL;
667}
668
669static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
670{
671 struct double_list *dl = v;
672 struct scsi_dev_info_list_table *devinfo_table =
673 list_entry(dl->top, struct scsi_dev_info_list_table, node);
674
675 ++*ppos;
676 dl->bottom = dl->bottom->next;
677 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
678 dl->top = dl->top->next;
679 if (dl->top == &scsi_dev_info_list) {
680 kfree(dl);
681 return NULL;
682 }
683 devinfo_table = list_entry(dl->top,
684 struct scsi_dev_info_list_table,
685 node);
686 dl->bottom = devinfo_table->scsi_dev_info_list.next;
687 }
688
689 return dl;
690}
691
692static void devinfo_seq_stop(struct seq_file *m, void *v)
693{
694 kfree(v);
695}
696
697static const struct seq_operations scsi_devinfo_seq_ops = {
698 .start = devinfo_seq_start,
699 .next = devinfo_seq_next,
700 .stop = devinfo_seq_stop,
701 .show = devinfo_seq_show,
702};
703
704static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
705{
706 return seq_open(file, &scsi_devinfo_seq_ops);
707}
708
709/*
710 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
711 *
712 * Description: Adds a black/white list entry for vendor and model with an
713 * integer value of flag to the scsi device info list.
714 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
715 */
716static ssize_t proc_scsi_devinfo_write(struct file *file,
717 const char __user *buf,
718 size_t length, loff_t *ppos)
719{
720 char *buffer;
721 ssize_t err = length;
722
723 if (!buf || length>PAGE_SIZE)
724 return -EINVAL;
725 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
726 return -ENOMEM;
727 if (copy_from_user(buffer, buf, length)) {
728 err =-EFAULT;
729 goto out;
730 }
731
732 if (length < PAGE_SIZE)
733 buffer[length] = '\0';
734 else if (buffer[PAGE_SIZE-1]) {
735 err = -EINVAL;
736 goto out;
737 }
738
739 scsi_dev_info_list_add_str(buffer);
740
741out:
742 free_page((unsigned long)buffer);
743 return err;
744}
745
746static const struct proc_ops scsi_devinfo_proc_ops = {
747 .proc_open = proc_scsi_devinfo_open,
748 .proc_read = seq_read,
749 .proc_write = proc_scsi_devinfo_write,
750 .proc_lseek = seq_lseek,
751 .proc_release = seq_release,
752};
753#endif /* CONFIG_SCSI_PROC_FS */
754
755module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
756MODULE_PARM_DESC(dev_flags,
757 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
758 " list entries for vendor and model with an integer value of flags"
759 " to the scsi device info list");
760
761module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644);
762MODULE_PARM_DESC(default_dev_flags,
763 "scsi default device flag uint64_t value");
764
765/**
766 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
767 **/
768void scsi_exit_devinfo(void)
769{
770#ifdef CONFIG_SCSI_PROC_FS
771 remove_proc_entry("scsi/device_info", NULL);
772#endif
773
774 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
775}
776
777/**
778 * scsi_dev_info_add_list - add a new devinfo list
779 * @key: key of the list to add
780 * @name: Name of the list to add (for /proc/scsi/device_info)
781 *
782 * Adds the requested list, returns zero on success, -EEXIST if the
783 * key is already registered to a list, or other error on failure.
784 */
785int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name)
786{
787 struct scsi_dev_info_list_table *devinfo_table =
788 scsi_devinfo_lookup_by_key(key);
789
790 if (!IS_ERR(devinfo_table))
791 /* list already exists */
792 return -EEXIST;
793
794 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
795
796 if (!devinfo_table)
797 return -ENOMEM;
798
799 INIT_LIST_HEAD(&devinfo_table->node);
800 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
801 devinfo_table->name = name;
802 devinfo_table->key = key;
803 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
804
805 return 0;
806}
807EXPORT_SYMBOL(scsi_dev_info_add_list);
808
809/**
810 * scsi_dev_info_remove_list - destroy an added devinfo list
811 * @key: key of the list to destroy
812 *
813 * Iterates over the entire list first, freeing all the values, then
814 * frees the list itself. Returns 0 on success or -EINVAL if the key
815 * can't be found.
816 */
817int scsi_dev_info_remove_list(enum scsi_devinfo_key key)
818{
819 struct list_head *lh, *lh_next;
820 struct scsi_dev_info_list_table *devinfo_table =
821 scsi_devinfo_lookup_by_key(key);
822
823 if (IS_ERR(devinfo_table))
824 /* no such list */
825 return -EINVAL;
826
827 /* remove from the master list */
828 list_del(&devinfo_table->node);
829
830 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
831 struct scsi_dev_info_list *devinfo;
832
833 devinfo = list_entry(lh, struct scsi_dev_info_list,
834 dev_info_list);
835 kfree(devinfo);
836 }
837 kfree(devinfo_table);
838
839 return 0;
840}
841EXPORT_SYMBOL(scsi_dev_info_remove_list);
842
843/**
844 * scsi_init_devinfo - set up the dynamic device list.
845 *
846 * Description:
847 * Add command line entries from scsi_dev_flags, then add
848 * scsi_static_device_list entries to the scsi device info list.
849 */
850int __init scsi_init_devinfo(void)
851{
852#ifdef CONFIG_SCSI_PROC_FS
853 struct proc_dir_entry *p;
854#endif
855 int error, i;
856
857 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
858 if (error)
859 return error;
860
861 error = scsi_dev_info_list_add_str(scsi_dev_flags);
862 if (error)
863 goto out;
864
865 for (i = 0; scsi_static_device_list[i].vendor; i++) {
866 error = scsi_dev_info_list_add(1 /* compatibile */,
867 scsi_static_device_list[i].vendor,
868 scsi_static_device_list[i].model,
869 NULL,
870 scsi_static_device_list[i].flags);
871 if (error)
872 goto out;
873 }
874
875#ifdef CONFIG_SCSI_PROC_FS
876 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops);
877 if (!p) {
878 error = -ENOMEM;
879 goto out;
880 }
881#endif /* CONFIG_SCSI_PROC_FS */
882
883 out:
884 if (error)
885 scsi_exit_devinfo();
886 return error;
887}