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 */
20 struct 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
28 struct 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
36 static const char spaces[] = " "; /* 16 of them */
37 static unsigned scsi_default_dev_flags;
38 static LIST_HEAD(scsi_dev_info_list);
39 static char scsi_dev_flags[256];
40
41 /*
42 * scsi_static_device_list: deprecated list of devices that require
43 * settings that differ from the default, includes black-listed (broken)
44 * devices. The entries here are added to the tail of scsi_dev_info_list
45 * via scsi_dev_info_list_init.
46 *
47 * Do not add to this list, use the command line or proc interface to add
48 * to the scsi_dev_info_list. This table will eventually go away.
49 */
50 static struct {
51 char *vendor;
52 char *model;
53 char *revision; /* revision known to be bad, unused */
54 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_REPORTLUN2},
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 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
210 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
211 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
212 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
213 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
214 {"MICROP", "4110", NULL, BLIST_NOTQ},
215 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC},
216 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
217 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
218 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
221 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
222 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
223 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
224 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
225 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
226 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
227 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
228 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
229 {"Promise", "", NULL, BLIST_SPARSELUN},
230 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
231 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
232 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
233 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
234 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
235 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
236 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
237 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
238 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
239 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
240 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
241 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
242 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
243 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
244 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
245 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
246 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
247 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
248 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
249 {"SUN", "T300", "*", BLIST_SPARSELUN},
250 {"SUN", "T4", "*", BLIST_SPARSELUN},
251 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
252 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
253 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
254 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
255 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
256 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
257 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
258 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
259 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
260 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
261 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
262 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
263 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
264 { NULL, NULL, NULL, 0 },
265 };
266
scsi_devinfo_lookup_by_key(int key)267 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
268 {
269 struct scsi_dev_info_list_table *devinfo_table;
270 int found = 0;
271
272 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
273 if (devinfo_table->key == key) {
274 found = 1;
275 break;
276 }
277 if (!found)
278 return ERR_PTR(-EINVAL);
279
280 return devinfo_table;
281 }
282
283 /*
284 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
285 * devinfo vendor and model strings.
286 */
scsi_strcpy_devinfo(char * name,char * to,size_t to_length,char * from,int compatible)287 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
288 char *from, int compatible)
289 {
290 size_t from_length;
291
292 from_length = strlen(from);
293 strncpy(to, from, min(to_length, from_length));
294 if (from_length < to_length) {
295 if (compatible) {
296 /*
297 * NUL terminate the string if it is short.
298 */
299 to[from_length] = '\0';
300 } else {
301 /*
302 * space pad the string if it is short.
303 */
304 strncpy(&to[from_length], spaces,
305 to_length - from_length);
306 }
307 }
308 if (from_length > to_length)
309 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
310 __func__, name, from);
311 }
312
313 /**
314 * scsi_dev_info_list_add - add one dev_info list entry.
315 * @compatible: if true, null terminate short strings. Otherwise space pad.
316 * @vendor: vendor string
317 * @model: model (product) string
318 * @strflags: integer string
319 * @flags: if strflags NULL, use this flag value
320 *
321 * Description:
322 * Create and add one dev_info entry for @vendor, @model, @strflags or
323 * @flag. If @compatible, add to the tail of the list, do not space
324 * pad, and set devinfo->compatible. The scsi_static_device_list entries
325 * are added with @compatible 1 and @clfags NULL.
326 *
327 * Returns: 0 OK, -error on failure.
328 **/
scsi_dev_info_list_add(int compatible,char * vendor,char * model,char * strflags,int flags)329 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
330 char *strflags, int flags)
331 {
332 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
333 strflags, flags,
334 SCSI_DEVINFO_GLOBAL);
335 }
336
337 /**
338 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
339 * @compatible: if true, null terminate short strings. Otherwise space pad.
340 * @vendor: vendor string
341 * @model: model (product) string
342 * @strflags: integer string
343 * @flags: if strflags NULL, use this flag value
344 * @key: specify list to use
345 *
346 * Description:
347 * Create and add one dev_info entry for @vendor, @model,
348 * @strflags or @flag in list specified by @key. If @compatible,
349 * add to the tail of the list, do not space pad, and set
350 * devinfo->compatible. The scsi_static_device_list entries are
351 * added with @compatible 1 and @clfags NULL.
352 *
353 * Returns: 0 OK, -error on failure.
354 **/
scsi_dev_info_list_add_keyed(int compatible,char * vendor,char * model,char * strflags,int flags,int key)355 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
356 char *strflags, int flags, int key)
357 {
358 struct scsi_dev_info_list *devinfo;
359 struct scsi_dev_info_list_table *devinfo_table =
360 scsi_devinfo_lookup_by_key(key);
361
362 if (IS_ERR(devinfo_table))
363 return PTR_ERR(devinfo_table);
364
365 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
366 if (!devinfo) {
367 printk(KERN_ERR "%s: no memory\n", __func__);
368 return -ENOMEM;
369 }
370
371 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
372 vendor, compatible);
373 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
374 model, compatible);
375
376 if (strflags)
377 devinfo->flags = simple_strtoul(strflags, NULL, 0);
378 else
379 devinfo->flags = flags;
380
381 devinfo->compatible = compatible;
382
383 if (compatible)
384 list_add_tail(&devinfo->dev_info_list,
385 &devinfo_table->scsi_dev_info_list);
386 else
387 list_add(&devinfo->dev_info_list,
388 &devinfo_table->scsi_dev_info_list);
389
390 return 0;
391 }
392 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
393
394 /**
395 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
396 * @vendor: vendor string
397 * @model: model (product) string
398 * @key: specify list to use
399 *
400 * Description:
401 * Remove and destroy one dev_info entry for @vendor, @model
402 * in list specified by @key.
403 *
404 * Returns: 0 OK, -error on failure.
405 **/
scsi_dev_info_list_del_keyed(char * vendor,char * model,int key)406 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
407 {
408 struct scsi_dev_info_list *devinfo, *found = NULL;
409 struct scsi_dev_info_list_table *devinfo_table =
410 scsi_devinfo_lookup_by_key(key);
411
412 if (IS_ERR(devinfo_table))
413 return PTR_ERR(devinfo_table);
414
415 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
416 dev_info_list) {
417 if (devinfo->compatible) {
418 /*
419 * Behave like the older version of get_device_flags.
420 */
421 size_t max;
422 /*
423 * XXX why skip leading spaces? If an odd INQUIRY
424 * value, that should have been part of the
425 * scsi_static_device_list[] entry, such as " FOO"
426 * rather than "FOO". Since this code is already
427 * here, and we don't know what device it is
428 * trying to work with, leave it as-is.
429 */
430 max = 8; /* max length of vendor */
431 while ((max > 0) && *vendor == ' ') {
432 max--;
433 vendor++;
434 }
435 /*
436 * XXX removing the following strlen() would be
437 * good, using it means that for a an entry not in
438 * the list, we scan every byte of every vendor
439 * listed in scsi_static_device_list[], and never match
440 * a single one (and still have to compare at
441 * least the first byte of each vendor).
442 */
443 if (memcmp(devinfo->vendor, vendor,
444 min(max, strlen(devinfo->vendor))))
445 continue;
446 /*
447 * Skip spaces again.
448 */
449 max = 16; /* max length of model */
450 while ((max > 0) && *model == ' ') {
451 max--;
452 model++;
453 }
454 if (memcmp(devinfo->model, model,
455 min(max, strlen(devinfo->model))))
456 continue;
457 found = devinfo;
458 } else {
459 if (!memcmp(devinfo->vendor, vendor,
460 sizeof(devinfo->vendor)) &&
461 !memcmp(devinfo->model, model,
462 sizeof(devinfo->model)))
463 found = devinfo;
464 }
465 if (found)
466 break;
467 }
468
469 if (found) {
470 list_del(&found->dev_info_list);
471 kfree(found);
472 return 0;
473 }
474
475 return -ENOENT;
476 }
477 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
478
479 /**
480 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
481 * @dev_list: string of device flags to add
482 *
483 * Description:
484 * Parse dev_list, and add entries to the scsi_dev_info_list.
485 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
486 * dev_list is modified via strsep. Can be called for command line
487 * addition, for proc or mabye a sysfs interface.
488 *
489 * Returns: 0 if OK, -error on failure.
490 **/
scsi_dev_info_list_add_str(char * dev_list)491 static int scsi_dev_info_list_add_str(char *dev_list)
492 {
493 char *vendor, *model, *strflags, *next;
494 char *next_check;
495 int res = 0;
496
497 next = dev_list;
498 if (next && next[0] == '"') {
499 /*
500 * Ignore both the leading and trailing quote.
501 */
502 next++;
503 next_check = ",\"";
504 } else {
505 next_check = ",";
506 }
507
508 /*
509 * For the leading and trailing '"' case, the for loop comes
510 * through the last time with vendor[0] == '\0'.
511 */
512 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
513 && (res == 0); vendor = strsep(&next, ":")) {
514 strflags = NULL;
515 model = strsep(&next, ":");
516 if (model)
517 strflags = strsep(&next, next_check);
518 if (!model || !strflags) {
519 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
520 " '%s'\n", __func__, vendor, model,
521 strflags);
522 res = -EINVAL;
523 } else
524 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
525 model, strflags, 0);
526 }
527 return res;
528 }
529
530 /**
531 * get_device_flags - get device specific flags from the dynamic device list.
532 * @sdev: &scsi_device to get flags for
533 * @vendor: vendor name
534 * @model: model name
535 *
536 * Description:
537 * Search the global scsi_dev_info_list (specified by list zero)
538 * for an entry matching @vendor and @model, if found, return the
539 * matching flags value, else return the host or global default
540 * settings. Called during scan time.
541 **/
scsi_get_device_flags(struct scsi_device * sdev,const unsigned char * vendor,const unsigned char * model)542 int scsi_get_device_flags(struct scsi_device *sdev,
543 const unsigned char *vendor,
544 const unsigned char *model)
545 {
546 return scsi_get_device_flags_keyed(sdev, vendor, model,
547 SCSI_DEVINFO_GLOBAL);
548 }
549
550
551 /**
552 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
553 * @sdev: &scsi_device to get flags for
554 * @vendor: vendor name
555 * @model: model name
556 * @key: list to look up
557 *
558 * Description:
559 * Search the scsi_dev_info_list specified by @key for an entry
560 * matching @vendor and @model, if found, return the matching
561 * flags value, else return the host or global default settings.
562 * Called during scan time.
563 **/
scsi_get_device_flags_keyed(struct scsi_device * sdev,const unsigned char * vendor,const unsigned char * model,int key)564 int scsi_get_device_flags_keyed(struct scsi_device *sdev,
565 const unsigned char *vendor,
566 const unsigned char *model,
567 int key)
568 {
569 struct scsi_dev_info_list *devinfo;
570 struct scsi_dev_info_list_table *devinfo_table;
571
572 devinfo_table = scsi_devinfo_lookup_by_key(key);
573
574 if (IS_ERR(devinfo_table))
575 return PTR_ERR(devinfo_table);
576
577 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
578 dev_info_list) {
579 if (devinfo->compatible) {
580 /*
581 * Behave like the older version of get_device_flags.
582 */
583 size_t max;
584 /*
585 * XXX why skip leading spaces? If an odd INQUIRY
586 * value, that should have been part of the
587 * scsi_static_device_list[] entry, such as " FOO"
588 * rather than "FOO". Since this code is already
589 * here, and we don't know what device it is
590 * trying to work with, leave it as-is.
591 */
592 max = 8; /* max length of vendor */
593 while ((max > 0) && *vendor == ' ') {
594 max--;
595 vendor++;
596 }
597 /*
598 * XXX removing the following strlen() would be
599 * good, using it means that for a an entry not in
600 * the list, we scan every byte of every vendor
601 * listed in scsi_static_device_list[], and never match
602 * a single one (and still have to compare at
603 * least the first byte of each vendor).
604 */
605 if (memcmp(devinfo->vendor, vendor,
606 min(max, strlen(devinfo->vendor))))
607 continue;
608 /*
609 * Skip spaces again.
610 */
611 max = 16; /* max length of model */
612 while ((max > 0) && *model == ' ') {
613 max--;
614 model++;
615 }
616 if (memcmp(devinfo->model, model,
617 min(max, strlen(devinfo->model))))
618 continue;
619 return devinfo->flags;
620 } else {
621 if (!memcmp(devinfo->vendor, vendor,
622 sizeof(devinfo->vendor)) &&
623 !memcmp(devinfo->model, model,
624 sizeof(devinfo->model)))
625 return devinfo->flags;
626 }
627 }
628 /* nothing found, return nothing */
629 if (key != SCSI_DEVINFO_GLOBAL)
630 return 0;
631
632 /* except for the global list, where we have an exception */
633 if (sdev->sdev_bflags)
634 return sdev->sdev_bflags;
635
636 return scsi_default_dev_flags;
637 }
638 EXPORT_SYMBOL(scsi_get_device_flags_keyed);
639
640 #ifdef CONFIG_SCSI_PROC_FS
641 struct double_list {
642 struct list_head *top;
643 struct list_head *bottom;
644 };
645
devinfo_seq_show(struct seq_file * m,void * v)646 static int devinfo_seq_show(struct seq_file *m, void *v)
647 {
648 struct double_list *dl = v;
649 struct scsi_dev_info_list_table *devinfo_table =
650 list_entry(dl->top, struct scsi_dev_info_list_table, node);
651 struct scsi_dev_info_list *devinfo =
652 list_entry(dl->bottom, struct scsi_dev_info_list,
653 dev_info_list);
654
655 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
656 devinfo_table->name)
657 seq_printf(m, "[%s]:\n", devinfo_table->name);
658
659 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
660 devinfo->vendor, devinfo->model, devinfo->flags);
661 return 0;
662 }
663
devinfo_seq_start(struct seq_file * m,loff_t * ppos)664 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
665 {
666 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
667 loff_t pos = *ppos;
668
669 if (!dl)
670 return NULL;
671
672 list_for_each(dl->top, &scsi_dev_info_list) {
673 struct scsi_dev_info_list_table *devinfo_table =
674 list_entry(dl->top, struct scsi_dev_info_list_table,
675 node);
676 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
677 if (pos-- == 0)
678 return dl;
679 }
680
681 kfree(dl);
682 return NULL;
683 }
684
devinfo_seq_next(struct seq_file * m,void * v,loff_t * ppos)685 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
686 {
687 struct double_list *dl = v;
688 struct scsi_dev_info_list_table *devinfo_table =
689 list_entry(dl->top, struct scsi_dev_info_list_table, node);
690
691 ++*ppos;
692 dl->bottom = dl->bottom->next;
693 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
694 dl->top = dl->top->next;
695 if (dl->top == &scsi_dev_info_list) {
696 kfree(dl);
697 return NULL;
698 }
699 devinfo_table = list_entry(dl->top,
700 struct scsi_dev_info_list_table,
701 node);
702 dl->bottom = devinfo_table->scsi_dev_info_list.next;
703 }
704
705 return dl;
706 }
707
devinfo_seq_stop(struct seq_file * m,void * v)708 static void devinfo_seq_stop(struct seq_file *m, void *v)
709 {
710 kfree(v);
711 }
712
713 static const struct seq_operations scsi_devinfo_seq_ops = {
714 .start = devinfo_seq_start,
715 .next = devinfo_seq_next,
716 .stop = devinfo_seq_stop,
717 .show = devinfo_seq_show,
718 };
719
proc_scsi_devinfo_open(struct inode * inode,struct file * file)720 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
721 {
722 return seq_open(file, &scsi_devinfo_seq_ops);
723 }
724
725 /*
726 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
727 *
728 * Description: Adds a black/white list entry for vendor and model with an
729 * integer value of flag to the scsi device info list.
730 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
731 */
proc_scsi_devinfo_write(struct file * file,const char __user * buf,size_t length,loff_t * ppos)732 static ssize_t proc_scsi_devinfo_write(struct file *file,
733 const char __user *buf,
734 size_t length, loff_t *ppos)
735 {
736 char *buffer;
737 ssize_t err = length;
738
739 if (!buf || length>PAGE_SIZE)
740 return -EINVAL;
741 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
742 return -ENOMEM;
743 if (copy_from_user(buffer, buf, length)) {
744 err =-EFAULT;
745 goto out;
746 }
747
748 if (length < PAGE_SIZE)
749 buffer[length] = '\0';
750 else if (buffer[PAGE_SIZE-1]) {
751 err = -EINVAL;
752 goto out;
753 }
754
755 scsi_dev_info_list_add_str(buffer);
756
757 out:
758 free_page((unsigned long)buffer);
759 return err;
760 }
761
762 static const struct file_operations scsi_devinfo_proc_fops = {
763 .owner = THIS_MODULE,
764 .open = proc_scsi_devinfo_open,
765 .read = seq_read,
766 .write = proc_scsi_devinfo_write,
767 .llseek = seq_lseek,
768 .release = seq_release,
769 };
770 #endif /* CONFIG_SCSI_PROC_FS */
771
772 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
773 MODULE_PARM_DESC(dev_flags,
774 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
775 " list entries for vendor and model with an integer value of flags"
776 " to the scsi device info list");
777
778 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
779 MODULE_PARM_DESC(default_dev_flags,
780 "scsi default device flag integer value");
781
782 /**
783 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
784 **/
scsi_exit_devinfo(void)785 void scsi_exit_devinfo(void)
786 {
787 #ifdef CONFIG_SCSI_PROC_FS
788 remove_proc_entry("scsi/device_info", NULL);
789 #endif
790
791 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
792 }
793
794 /**
795 * scsi_dev_info_add_list - add a new devinfo list
796 * @key: key of the list to add
797 * @name: Name of the list to add (for /proc/scsi/device_info)
798 *
799 * Adds the requested list, returns zero on success, -EEXIST if the
800 * key is already registered to a list, or other error on failure.
801 */
scsi_dev_info_add_list(int key,const char * name)802 int scsi_dev_info_add_list(int key, const char *name)
803 {
804 struct scsi_dev_info_list_table *devinfo_table =
805 scsi_devinfo_lookup_by_key(key);
806
807 if (!IS_ERR(devinfo_table))
808 /* list already exists */
809 return -EEXIST;
810
811 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
812
813 if (!devinfo_table)
814 return -ENOMEM;
815
816 INIT_LIST_HEAD(&devinfo_table->node);
817 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
818 devinfo_table->name = name;
819 devinfo_table->key = key;
820 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
821
822 return 0;
823 }
824 EXPORT_SYMBOL(scsi_dev_info_add_list);
825
826 /**
827 * scsi_dev_info_remove_list - destroy an added devinfo list
828 * @key: key of the list to destroy
829 *
830 * Iterates over the entire list first, freeing all the values, then
831 * frees the list itself. Returns 0 on success or -EINVAL if the key
832 * can't be found.
833 */
scsi_dev_info_remove_list(int key)834 int scsi_dev_info_remove_list(int key)
835 {
836 struct list_head *lh, *lh_next;
837 struct scsi_dev_info_list_table *devinfo_table =
838 scsi_devinfo_lookup_by_key(key);
839
840 if (IS_ERR(devinfo_table))
841 /* no such list */
842 return -EINVAL;
843
844 /* remove from the master list */
845 list_del(&devinfo_table->node);
846
847 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
848 struct scsi_dev_info_list *devinfo;
849
850 devinfo = list_entry(lh, struct scsi_dev_info_list,
851 dev_info_list);
852 kfree(devinfo);
853 }
854 kfree(devinfo_table);
855
856 return 0;
857 }
858 EXPORT_SYMBOL(scsi_dev_info_remove_list);
859
860 /**
861 * scsi_init_devinfo - set up the dynamic device list.
862 *
863 * Description:
864 * Add command line entries from scsi_dev_flags, then add
865 * scsi_static_device_list entries to the scsi device info list.
866 */
scsi_init_devinfo(void)867 int __init scsi_init_devinfo(void)
868 {
869 #ifdef CONFIG_SCSI_PROC_FS
870 struct proc_dir_entry *p;
871 #endif
872 int error, i;
873
874 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
875 if (error)
876 return error;
877
878 error = scsi_dev_info_list_add_str(scsi_dev_flags);
879 if (error)
880 goto out;
881
882 for (i = 0; scsi_static_device_list[i].vendor; i++) {
883 error = scsi_dev_info_list_add(1 /* compatibile */,
884 scsi_static_device_list[i].vendor,
885 scsi_static_device_list[i].model,
886 NULL,
887 scsi_static_device_list[i].flags);
888 if (error)
889 goto out;
890 }
891
892 #ifdef CONFIG_SCSI_PROC_FS
893 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
894 if (!p) {
895 error = -ENOMEM;
896 goto out;
897 }
898 #endif /* CONFIG_SCSI_PROC_FS */
899
900 out:
901 if (error)
902 scsi_exit_devinfo();
903 return error;
904 }
905