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_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 {"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 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
233 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
234 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
235 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
236 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
237 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
238 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
239 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
240 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
241 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
242 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
243 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
244 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
245 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
246 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
247 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
248 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
249 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
250 {"SUN", "T300", "*", BLIST_SPARSELUN},
251 {"SUN", "T4", "*", BLIST_SPARSELUN},
252 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
253 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
254 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
255 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
256 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
257 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
258 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
259 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
260 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
261 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
262 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
263 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
264 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
265 { NULL, NULL, NULL, 0 },
266 };
267
scsi_devinfo_lookup_by_key(int key)268 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
269 {
270 struct scsi_dev_info_list_table *devinfo_table;
271 int found = 0;
272
273 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
274 if (devinfo_table->key == key) {
275 found = 1;
276 break;
277 }
278 if (!found)
279 return ERR_PTR(-EINVAL);
280
281 return devinfo_table;
282 }
283
284 /*
285 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
286 * devinfo vendor and model strings.
287 */
scsi_strcpy_devinfo(char * name,char * to,size_t to_length,char * from,int compatible)288 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
289 char *from, int compatible)
290 {
291 size_t from_length;
292
293 from_length = strlen(from);
294 strncpy(to, from, min(to_length, from_length));
295 if (from_length < to_length) {
296 if (compatible) {
297 /*
298 * NUL terminate the string if it is short.
299 */
300 to[from_length] = '\0';
301 } else {
302 /*
303 * space pad the string if it is short.
304 */
305 strncpy(&to[from_length], spaces,
306 to_length - from_length);
307 }
308 }
309 if (from_length > to_length)
310 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
311 __func__, name, from);
312 }
313
314 /**
315 * scsi_dev_info_list_add - add one dev_info list entry.
316 * @compatible: if true, null terminate short strings. Otherwise space pad.
317 * @vendor: vendor string
318 * @model: model (product) string
319 * @strflags: integer string
320 * @flags: if strflags NULL, use this flag value
321 *
322 * Description:
323 * Create and add one dev_info entry for @vendor, @model, @strflags or
324 * @flag. If @compatible, add to the tail of the list, do not space
325 * pad, and set devinfo->compatible. The scsi_static_device_list entries
326 * are added with @compatible 1 and @clfags NULL.
327 *
328 * Returns: 0 OK, -error on failure.
329 **/
scsi_dev_info_list_add(int compatible,char * vendor,char * model,char * strflags,int flags)330 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
331 char *strflags, int flags)
332 {
333 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
334 strflags, flags,
335 SCSI_DEVINFO_GLOBAL);
336 }
337
338 /**
339 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
340 * @compatible: if true, null terminate short strings. Otherwise space pad.
341 * @vendor: vendor string
342 * @model: model (product) string
343 * @strflags: integer string
344 * @flags: if strflags NULL, use this flag value
345 * @key: specify list to use
346 *
347 * Description:
348 * Create and add one dev_info entry for @vendor, @model,
349 * @strflags or @flag in list specified by @key. If @compatible,
350 * add to the tail of the list, do not space pad, and set
351 * devinfo->compatible. The scsi_static_device_list entries are
352 * added with @compatible 1 and @clfags NULL.
353 *
354 * Returns: 0 OK, -error on failure.
355 **/
scsi_dev_info_list_add_keyed(int compatible,char * vendor,char * model,char * strflags,int flags,int key)356 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
357 char *strflags, int flags, int key)
358 {
359 struct scsi_dev_info_list *devinfo;
360 struct scsi_dev_info_list_table *devinfo_table =
361 scsi_devinfo_lookup_by_key(key);
362
363 if (IS_ERR(devinfo_table))
364 return PTR_ERR(devinfo_table);
365
366 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
367 if (!devinfo) {
368 printk(KERN_ERR "%s: no memory\n", __func__);
369 return -ENOMEM;
370 }
371
372 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
373 vendor, compatible);
374 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
375 model, compatible);
376
377 if (strflags)
378 devinfo->flags = simple_strtoul(strflags, NULL, 0);
379 else
380 devinfo->flags = flags;
381
382 devinfo->compatible = compatible;
383
384 if (compatible)
385 list_add_tail(&devinfo->dev_info_list,
386 &devinfo_table->scsi_dev_info_list);
387 else
388 list_add(&devinfo->dev_info_list,
389 &devinfo_table->scsi_dev_info_list);
390
391 return 0;
392 }
393 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
394
395 /**
396 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
397 * @vendor: vendor string
398 * @model: model (product) string
399 * @key: specify list to use
400 *
401 * Description:
402 * Remove and destroy one dev_info entry for @vendor, @model
403 * in list specified by @key.
404 *
405 * Returns: 0 OK, -error on failure.
406 **/
scsi_dev_info_list_del_keyed(char * vendor,char * model,int key)407 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
408 {
409 struct scsi_dev_info_list *devinfo, *found = NULL;
410 struct scsi_dev_info_list_table *devinfo_table =
411 scsi_devinfo_lookup_by_key(key);
412
413 if (IS_ERR(devinfo_table))
414 return PTR_ERR(devinfo_table);
415
416 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
417 dev_info_list) {
418 if (devinfo->compatible) {
419 /*
420 * Behave like the older version of get_device_flags.
421 */
422 size_t max;
423 /*
424 * XXX why skip leading spaces? If an odd INQUIRY
425 * value, that should have been part of the
426 * scsi_static_device_list[] entry, such as " FOO"
427 * rather than "FOO". Since this code is already
428 * here, and we don't know what device it is
429 * trying to work with, leave it as-is.
430 */
431 max = 8; /* max length of vendor */
432 while ((max > 0) && *vendor == ' ') {
433 max--;
434 vendor++;
435 }
436 /*
437 * XXX removing the following strlen() would be
438 * good, using it means that for a an entry not in
439 * the list, we scan every byte of every vendor
440 * listed in scsi_static_device_list[], and never match
441 * a single one (and still have to compare at
442 * least the first byte of each vendor).
443 */
444 if (memcmp(devinfo->vendor, vendor,
445 min(max, strlen(devinfo->vendor))))
446 continue;
447 /*
448 * Skip spaces again.
449 */
450 max = 16; /* max length of model */
451 while ((max > 0) && *model == ' ') {
452 max--;
453 model++;
454 }
455 if (memcmp(devinfo->model, model,
456 min(max, strlen(devinfo->model))))
457 continue;
458 found = devinfo;
459 } else {
460 if (!memcmp(devinfo->vendor, vendor,
461 sizeof(devinfo->vendor)) &&
462 !memcmp(devinfo->model, model,
463 sizeof(devinfo->model)))
464 found = devinfo;
465 }
466 if (found)
467 break;
468 }
469
470 if (found) {
471 list_del(&found->dev_info_list);
472 kfree(found);
473 return 0;
474 }
475
476 return -ENOENT;
477 }
478 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
479
480 /**
481 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
482 * @dev_list: string of device flags to add
483 *
484 * Description:
485 * Parse dev_list, and add entries to the scsi_dev_info_list.
486 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
487 * dev_list is modified via strsep. Can be called for command line
488 * addition, for proc or mabye a sysfs interface.
489 *
490 * Returns: 0 if OK, -error on failure.
491 **/
scsi_dev_info_list_add_str(char * dev_list)492 static int scsi_dev_info_list_add_str(char *dev_list)
493 {
494 char *vendor, *model, *strflags, *next;
495 char *next_check;
496 int res = 0;
497
498 next = dev_list;
499 if (next && next[0] == '"') {
500 /*
501 * Ignore both the leading and trailing quote.
502 */
503 next++;
504 next_check = ",\"";
505 } else {
506 next_check = ",";
507 }
508
509 /*
510 * For the leading and trailing '"' case, the for loop comes
511 * through the last time with vendor[0] == '\0'.
512 */
513 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
514 && (res == 0); vendor = strsep(&next, ":")) {
515 strflags = NULL;
516 model = strsep(&next, ":");
517 if (model)
518 strflags = strsep(&next, next_check);
519 if (!model || !strflags) {
520 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
521 " '%s'\n", __func__, vendor, model,
522 strflags);
523 res = -EINVAL;
524 } else
525 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
526 model, strflags, 0);
527 }
528 return res;
529 }
530
531 /**
532 * get_device_flags - get device specific flags from the dynamic device list.
533 * @sdev: &scsi_device to get flags for
534 * @vendor: vendor name
535 * @model: model name
536 *
537 * Description:
538 * Search the global scsi_dev_info_list (specified by list zero)
539 * for an entry matching @vendor and @model, if found, return the
540 * matching flags value, else return the host or global default
541 * settings. Called during scan time.
542 **/
scsi_get_device_flags(struct scsi_device * sdev,const unsigned char * vendor,const unsigned char * model)543 int scsi_get_device_flags(struct scsi_device *sdev,
544 const unsigned char *vendor,
545 const unsigned char *model)
546 {
547 return scsi_get_device_flags_keyed(sdev, vendor, model,
548 SCSI_DEVINFO_GLOBAL);
549 }
550
551
552 /**
553 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
554 * @sdev: &scsi_device to get flags for
555 * @vendor: vendor name
556 * @model: model name
557 * @key: list to look up
558 *
559 * Description:
560 * Search the scsi_dev_info_list specified by @key for an entry
561 * matching @vendor and @model, if found, return the matching
562 * flags value, else return the host or global default settings.
563 * Called during scan time.
564 **/
scsi_get_device_flags_keyed(struct scsi_device * sdev,const unsigned char * vendor,const unsigned char * model,int key)565 int scsi_get_device_flags_keyed(struct scsi_device *sdev,
566 const unsigned char *vendor,
567 const unsigned char *model,
568 int key)
569 {
570 struct scsi_dev_info_list *devinfo;
571 struct scsi_dev_info_list_table *devinfo_table;
572
573 devinfo_table = scsi_devinfo_lookup_by_key(key);
574
575 if (IS_ERR(devinfo_table))
576 return PTR_ERR(devinfo_table);
577
578 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
579 dev_info_list) {
580 if (devinfo->compatible) {
581 /*
582 * Behave like the older version of get_device_flags.
583 */
584 size_t max;
585 /*
586 * XXX why skip leading spaces? If an odd INQUIRY
587 * value, that should have been part of the
588 * scsi_static_device_list[] entry, such as " FOO"
589 * rather than "FOO". Since this code is already
590 * here, and we don't know what device it is
591 * trying to work with, leave it as-is.
592 */
593 max = 8; /* max length of vendor */
594 while ((max > 0) && *vendor == ' ') {
595 max--;
596 vendor++;
597 }
598 /*
599 * XXX removing the following strlen() would be
600 * good, using it means that for a an entry not in
601 * the list, we scan every byte of every vendor
602 * listed in scsi_static_device_list[], and never match
603 * a single one (and still have to compare at
604 * least the first byte of each vendor).
605 */
606 if (memcmp(devinfo->vendor, vendor,
607 min(max, strlen(devinfo->vendor))))
608 continue;
609 /*
610 * Skip spaces again.
611 */
612 max = 16; /* max length of model */
613 while ((max > 0) && *model == ' ') {
614 max--;
615 model++;
616 }
617 if (memcmp(devinfo->model, model,
618 min(max, strlen(devinfo->model))))
619 continue;
620 return devinfo->flags;
621 } else {
622 if (!memcmp(devinfo->vendor, vendor,
623 sizeof(devinfo->vendor)) &&
624 !memcmp(devinfo->model, model,
625 sizeof(devinfo->model)))
626 return devinfo->flags;
627 }
628 }
629 /* nothing found, return nothing */
630 if (key != SCSI_DEVINFO_GLOBAL)
631 return 0;
632
633 /* except for the global list, where we have an exception */
634 if (sdev->sdev_bflags)
635 return sdev->sdev_bflags;
636
637 return scsi_default_dev_flags;
638 }
639 EXPORT_SYMBOL(scsi_get_device_flags_keyed);
640
641 #ifdef CONFIG_SCSI_PROC_FS
642 struct double_list {
643 struct list_head *top;
644 struct list_head *bottom;
645 };
646
devinfo_seq_show(struct seq_file * m,void * v)647 static int devinfo_seq_show(struct seq_file *m, void *v)
648 {
649 struct double_list *dl = v;
650 struct scsi_dev_info_list_table *devinfo_table =
651 list_entry(dl->top, struct scsi_dev_info_list_table, node);
652 struct scsi_dev_info_list *devinfo =
653 list_entry(dl->bottom, struct scsi_dev_info_list,
654 dev_info_list);
655
656 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
657 devinfo_table->name)
658 seq_printf(m, "[%s]:\n", devinfo_table->name);
659
660 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
661 devinfo->vendor, devinfo->model, devinfo->flags);
662 return 0;
663 }
664
devinfo_seq_start(struct seq_file * m,loff_t * ppos)665 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
666 {
667 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
668 loff_t pos = *ppos;
669
670 if (!dl)
671 return NULL;
672
673 list_for_each(dl->top, &scsi_dev_info_list) {
674 struct scsi_dev_info_list_table *devinfo_table =
675 list_entry(dl->top, struct scsi_dev_info_list_table,
676 node);
677 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
678 if (pos-- == 0)
679 return dl;
680 }
681
682 kfree(dl);
683 return NULL;
684 }
685
devinfo_seq_next(struct seq_file * m,void * v,loff_t * ppos)686 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
687 {
688 struct double_list *dl = v;
689 struct scsi_dev_info_list_table *devinfo_table =
690 list_entry(dl->top, struct scsi_dev_info_list_table, node);
691
692 ++*ppos;
693 dl->bottom = dl->bottom->next;
694 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
695 dl->top = dl->top->next;
696 if (dl->top == &scsi_dev_info_list) {
697 kfree(dl);
698 return NULL;
699 }
700 devinfo_table = list_entry(dl->top,
701 struct scsi_dev_info_list_table,
702 node);
703 dl->bottom = devinfo_table->scsi_dev_info_list.next;
704 }
705
706 return dl;
707 }
708
devinfo_seq_stop(struct seq_file * m,void * v)709 static void devinfo_seq_stop(struct seq_file *m, void *v)
710 {
711 kfree(v);
712 }
713
714 static const struct seq_operations scsi_devinfo_seq_ops = {
715 .start = devinfo_seq_start,
716 .next = devinfo_seq_next,
717 .stop = devinfo_seq_stop,
718 .show = devinfo_seq_show,
719 };
720
proc_scsi_devinfo_open(struct inode * inode,struct file * file)721 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
722 {
723 return seq_open(file, &scsi_devinfo_seq_ops);
724 }
725
726 /*
727 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
728 *
729 * Description: Adds a black/white list entry for vendor and model with an
730 * integer value of flag to the scsi device info list.
731 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
732 */
proc_scsi_devinfo_write(struct file * file,const char __user * buf,size_t length,loff_t * ppos)733 static ssize_t proc_scsi_devinfo_write(struct file *file,
734 const char __user *buf,
735 size_t length, loff_t *ppos)
736 {
737 char *buffer;
738 ssize_t err = length;
739
740 if (!buf || length>PAGE_SIZE)
741 return -EINVAL;
742 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
743 return -ENOMEM;
744 if (copy_from_user(buffer, buf, length)) {
745 err =-EFAULT;
746 goto out;
747 }
748
749 if (length < PAGE_SIZE)
750 buffer[length] = '\0';
751 else if (buffer[PAGE_SIZE-1]) {
752 err = -EINVAL;
753 goto out;
754 }
755
756 scsi_dev_info_list_add_str(buffer);
757
758 out:
759 free_page((unsigned long)buffer);
760 return err;
761 }
762
763 static const struct file_operations scsi_devinfo_proc_fops = {
764 .owner = THIS_MODULE,
765 .open = proc_scsi_devinfo_open,
766 .read = seq_read,
767 .write = proc_scsi_devinfo_write,
768 .llseek = seq_lseek,
769 .release = seq_release,
770 };
771 #endif /* CONFIG_SCSI_PROC_FS */
772
773 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
774 MODULE_PARM_DESC(dev_flags,
775 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
776 " list entries for vendor and model with an integer value of flags"
777 " to the scsi device info list");
778
779 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
780 MODULE_PARM_DESC(default_dev_flags,
781 "scsi default device flag integer value");
782
783 /**
784 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
785 **/
scsi_exit_devinfo(void)786 void scsi_exit_devinfo(void)
787 {
788 #ifdef CONFIG_SCSI_PROC_FS
789 remove_proc_entry("scsi/device_info", NULL);
790 #endif
791
792 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
793 }
794
795 /**
796 * scsi_dev_info_add_list - add a new devinfo list
797 * @key: key of the list to add
798 * @name: Name of the list to add (for /proc/scsi/device_info)
799 *
800 * Adds the requested list, returns zero on success, -EEXIST if the
801 * key is already registered to a list, or other error on failure.
802 */
scsi_dev_info_add_list(int key,const char * name)803 int scsi_dev_info_add_list(int key, const char *name)
804 {
805 struct scsi_dev_info_list_table *devinfo_table =
806 scsi_devinfo_lookup_by_key(key);
807
808 if (!IS_ERR(devinfo_table))
809 /* list already exists */
810 return -EEXIST;
811
812 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
813
814 if (!devinfo_table)
815 return -ENOMEM;
816
817 INIT_LIST_HEAD(&devinfo_table->node);
818 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
819 devinfo_table->name = name;
820 devinfo_table->key = key;
821 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
822
823 return 0;
824 }
825 EXPORT_SYMBOL(scsi_dev_info_add_list);
826
827 /**
828 * scsi_dev_info_remove_list - destroy an added devinfo list
829 * @key: key of the list to destroy
830 *
831 * Iterates over the entire list first, freeing all the values, then
832 * frees the list itself. Returns 0 on success or -EINVAL if the key
833 * can't be found.
834 */
scsi_dev_info_remove_list(int key)835 int scsi_dev_info_remove_list(int key)
836 {
837 struct list_head *lh, *lh_next;
838 struct scsi_dev_info_list_table *devinfo_table =
839 scsi_devinfo_lookup_by_key(key);
840
841 if (IS_ERR(devinfo_table))
842 /* no such list */
843 return -EINVAL;
844
845 /* remove from the master list */
846 list_del(&devinfo_table->node);
847
848 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
849 struct scsi_dev_info_list *devinfo;
850
851 devinfo = list_entry(lh, struct scsi_dev_info_list,
852 dev_info_list);
853 kfree(devinfo);
854 }
855 kfree(devinfo_table);
856
857 return 0;
858 }
859 EXPORT_SYMBOL(scsi_dev_info_remove_list);
860
861 /**
862 * scsi_init_devinfo - set up the dynamic device list.
863 *
864 * Description:
865 * Add command line entries from scsi_dev_flags, then add
866 * scsi_static_device_list entries to the scsi device info list.
867 */
scsi_init_devinfo(void)868 int __init scsi_init_devinfo(void)
869 {
870 #ifdef CONFIG_SCSI_PROC_FS
871 struct proc_dir_entry *p;
872 #endif
873 int error, i;
874
875 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
876 if (error)
877 return error;
878
879 error = scsi_dev_info_list_add_str(scsi_dev_flags);
880 if (error)
881 goto out;
882
883 for (i = 0; scsi_static_device_list[i].vendor; i++) {
884 error = scsi_dev_info_list_add(1 /* compatibile */,
885 scsi_static_device_list[i].vendor,
886 scsi_static_device_list[i].model,
887 NULL,
888 scsi_static_device_list[i].flags);
889 if (error)
890 goto out;
891 }
892
893 #ifdef CONFIG_SCSI_PROC_FS
894 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
895 if (!p) {
896 error = -ENOMEM;
897 goto out;
898 }
899 #endif /* CONFIG_SCSI_PROC_FS */
900
901 out:
902 if (error)
903 scsi_exit_devinfo();
904 return error;
905 }
906