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 unsigned scsi_default_dev_flags;
37 static LIST_HEAD(scsi_dev_info_list);
38 static char scsi_dev_flags[256];
39
40 /*
41 * scsi_static_device_list: deprecated list of devices that require
42 * settings that differ from the default, includes black-listed (broken)
43 * devices. The entries here are added to the tail of scsi_dev_info_list
44 * via scsi_dev_info_list_init.
45 *
46 * Do not add to this list, use the command line or proc interface to add
47 * to the scsi_dev_info_list. This table will eventually go away.
48 */
49 static struct {
50 char *vendor;
51 char *model;
52 char *revision; /* revision known to be bad, unused */
53 unsigned 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", "", BLIST_NOLUN}, /* scanjet iip */
111 {"HP", "C2500A", "", 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},
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 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
137 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
138 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
139 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
140 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
141 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
142 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
143 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
144 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
145 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
146 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */
147 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */
148 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
149 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
150 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
151 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
152 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
153 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
154 {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
155 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
156 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
157 {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
158 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
159 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */
160 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */
161 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
162 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_REPORTLUN2},
163 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
164 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
165 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
166 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
167 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
168 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
169 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36},
170 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36},
171 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
172 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
173 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
174 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
175 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
176 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
177 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
178 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
179 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
180 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
181 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
182 {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */
183 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
184 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
185 {"HP", "C1557A", NULL, BLIST_FORCELUN},
186 {"HP", "C3323-300", "4269", BLIST_NOTQ},
187 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
188 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
189 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
190 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
191 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
192 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
193 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
194 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
195 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
196 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
197 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
198 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
199 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
200 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
201 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
202 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
203 {"INSITE", "I325VM", NULL, BLIST_KEY},
204 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
205 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
206 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
207 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
208 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
209 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
210 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
211 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
212 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
213 {"MICROP", "4110", NULL, BLIST_NOTQ},
214 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC},
215 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
216 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
217 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
218 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
221 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
222 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
223 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
224 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
225 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
226 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
227 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
228 {"Promise", "", NULL, BLIST_SPARSELUN},
229 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
230 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
231 {"SYNOLOGY", "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 /* this zero-pads the destination */
294 strncpy(to, from, to_length);
295 if (from_length < to_length && !compatible) {
296 /*
297 * space pad the string if it is short.
298 */
299 memset(&to[from_length], ' ', to_length - from_length);
300 }
301 if (from_length > to_length)
302 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
303 __func__, name, from);
304 }
305
306 /**
307 * scsi_dev_info_list_add - add one dev_info list entry.
308 * @compatible: if true, null terminate short strings. Otherwise space pad.
309 * @vendor: vendor string
310 * @model: model (product) string
311 * @strflags: integer string
312 * @flags: if strflags NULL, use this flag value
313 *
314 * Description:
315 * Create and add one dev_info entry for @vendor, @model, @strflags or
316 * @flag. If @compatible, add to the tail of the list, do not space
317 * pad, and set devinfo->compatible. The scsi_static_device_list entries
318 * are added with @compatible 1 and @clfags NULL.
319 *
320 * Returns: 0 OK, -error on failure.
321 **/
scsi_dev_info_list_add(int compatible,char * vendor,char * model,char * strflags,int flags)322 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
323 char *strflags, int flags)
324 {
325 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
326 strflags, flags,
327 SCSI_DEVINFO_GLOBAL);
328 }
329
330 /**
331 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
332 * @compatible: if true, null terminate short strings. Otherwise space pad.
333 * @vendor: vendor string
334 * @model: model (product) string
335 * @strflags: integer string
336 * @flags: if strflags NULL, use this flag value
337 * @key: specify list to use
338 *
339 * Description:
340 * Create and add one dev_info entry for @vendor, @model,
341 * @strflags or @flag in list specified by @key. If @compatible,
342 * add to the tail of the list, do not space pad, and set
343 * devinfo->compatible. The scsi_static_device_list entries are
344 * added with @compatible 1 and @clfags NULL.
345 *
346 * Returns: 0 OK, -error on failure.
347 **/
scsi_dev_info_list_add_keyed(int compatible,char * vendor,char * model,char * strflags,int flags,int key)348 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
349 char *strflags, int flags, int key)
350 {
351 struct scsi_dev_info_list *devinfo;
352 struct scsi_dev_info_list_table *devinfo_table =
353 scsi_devinfo_lookup_by_key(key);
354
355 if (IS_ERR(devinfo_table))
356 return PTR_ERR(devinfo_table);
357
358 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
359 if (!devinfo) {
360 printk(KERN_ERR "%s: no memory\n", __func__);
361 return -ENOMEM;
362 }
363
364 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
365 vendor, compatible);
366 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
367 model, compatible);
368
369 if (strflags)
370 devinfo->flags = simple_strtoul(strflags, NULL, 0);
371 else
372 devinfo->flags = flags;
373
374 devinfo->compatible = compatible;
375
376 if (compatible)
377 list_add_tail(&devinfo->dev_info_list,
378 &devinfo_table->scsi_dev_info_list);
379 else
380 list_add(&devinfo->dev_info_list,
381 &devinfo_table->scsi_dev_info_list);
382
383 return 0;
384 }
385 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
386
387 /**
388 * scsi_dev_info_list_find - find a matching dev_info list entry.
389 * @vendor: full vendor string
390 * @model: full model (product) string
391 * @key: specify list to use
392 *
393 * Description:
394 * Finds the first dev_info entry matching @vendor, @model
395 * in list specified by @key.
396 *
397 * Returns: pointer to matching entry, or ERR_PTR on failure.
398 **/
scsi_dev_info_list_find(const char * vendor,const char * model,int key)399 static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
400 const char *model, int key)
401 {
402 struct scsi_dev_info_list *devinfo;
403 struct scsi_dev_info_list_table *devinfo_table =
404 scsi_devinfo_lookup_by_key(key);
405 size_t vmax, mmax, mlen;
406 const char *vskip, *mskip;
407
408 if (IS_ERR(devinfo_table))
409 return (struct scsi_dev_info_list *) devinfo_table;
410
411 /* Prepare for "compatible" matches */
412
413 /*
414 * XXX why skip leading spaces? If an odd INQUIRY
415 * value, that should have been part of the
416 * scsi_static_device_list[] entry, such as " FOO"
417 * rather than "FOO". Since this code is already
418 * here, and we don't know what device it is
419 * trying to work with, leave it as-is.
420 */
421 vmax = sizeof(devinfo->vendor);
422 vskip = vendor;
423 while (vmax > 0 && *vskip == ' ') {
424 vmax--;
425 vskip++;
426 }
427 /* Also skip trailing spaces */
428 while (vmax > 0 && vskip[vmax - 1] == ' ')
429 --vmax;
430
431 mmax = sizeof(devinfo->model);
432 mskip = model;
433 while (mmax > 0 && *mskip == ' ') {
434 mmax--;
435 mskip++;
436 }
437 while (mmax > 0 && mskip[mmax - 1] == ' ')
438 --mmax;
439
440 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
441 dev_info_list) {
442 if (devinfo->compatible) {
443 /*
444 * vendor strings must be an exact match
445 */
446 if (vmax != strnlen(devinfo->vendor,
447 sizeof(devinfo->vendor)) ||
448 memcmp(devinfo->vendor, vskip, vmax))
449 continue;
450
451 /*
452 * @model specifies the full string, and
453 * must be larger or equal to devinfo->model
454 */
455 mlen = strnlen(devinfo->model, sizeof(devinfo->model));
456 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen))
457 continue;
458 return devinfo;
459 } else {
460 if (!memcmp(devinfo->vendor, vendor,
461 sizeof(devinfo->vendor)) &&
462 !memcmp(devinfo->model, model,
463 sizeof(devinfo->model)))
464 return devinfo;
465 }
466 }
467
468 return ERR_PTR(-ENOENT);
469 }
470
471 /**
472 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
473 * @vendor: vendor string
474 * @model: model (product) string
475 * @key: specify list to use
476 *
477 * Description:
478 * Remove and destroy one dev_info entry for @vendor, @model
479 * in list specified by @key.
480 *
481 * Returns: 0 OK, -error on failure.
482 **/
scsi_dev_info_list_del_keyed(char * vendor,char * model,int key)483 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
484 {
485 struct scsi_dev_info_list *found;
486
487 found = scsi_dev_info_list_find(vendor, model, key);
488 if (IS_ERR(found))
489 return PTR_ERR(found);
490
491 list_del(&found->dev_info_list);
492 kfree(found);
493 return 0;
494 }
495 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
496
497 /**
498 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
499 * @dev_list: string of device flags to add
500 *
501 * Description:
502 * Parse dev_list, and add entries to the scsi_dev_info_list.
503 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
504 * dev_list is modified via strsep. Can be called for command line
505 * addition, for proc or mabye a sysfs interface.
506 *
507 * Returns: 0 if OK, -error on failure.
508 **/
scsi_dev_info_list_add_str(char * dev_list)509 static int scsi_dev_info_list_add_str(char *dev_list)
510 {
511 char *vendor, *model, *strflags, *next;
512 char *next_check;
513 int res = 0;
514
515 next = dev_list;
516 if (next && next[0] == '"') {
517 /*
518 * Ignore both the leading and trailing quote.
519 */
520 next++;
521 next_check = ",\"";
522 } else {
523 next_check = ",";
524 }
525
526 /*
527 * For the leading and trailing '"' case, the for loop comes
528 * through the last time with vendor[0] == '\0'.
529 */
530 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
531 && (res == 0); vendor = strsep(&next, ":")) {
532 strflags = NULL;
533 model = strsep(&next, ":");
534 if (model)
535 strflags = strsep(&next, next_check);
536 if (!model || !strflags) {
537 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
538 " '%s'\n", __func__, vendor, model,
539 strflags);
540 res = -EINVAL;
541 } else
542 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
543 model, strflags, 0);
544 }
545 return res;
546 }
547
548 /**
549 * get_device_flags - get device specific flags from the dynamic device list.
550 * @sdev: &scsi_device to get flags for
551 * @vendor: vendor name
552 * @model: model name
553 *
554 * Description:
555 * Search the global scsi_dev_info_list (specified by list zero)
556 * for an entry matching @vendor and @model, if found, return the
557 * matching flags value, else return the host or global default
558 * settings. Called during scan time.
559 **/
scsi_get_device_flags(struct scsi_device * sdev,const unsigned char * vendor,const unsigned char * model)560 int scsi_get_device_flags(struct scsi_device *sdev,
561 const unsigned char *vendor,
562 const unsigned char *model)
563 {
564 return scsi_get_device_flags_keyed(sdev, vendor, model,
565 SCSI_DEVINFO_GLOBAL);
566 }
567
568
569 /**
570 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
571 * @sdev: &scsi_device to get flags for
572 * @vendor: vendor name
573 * @model: model name
574 * @key: list to look up
575 *
576 * Description:
577 * Search the scsi_dev_info_list specified by @key for an entry
578 * matching @vendor and @model, if found, return the matching
579 * flags value, else return the host or global default settings.
580 * Called during scan time.
581 **/
scsi_get_device_flags_keyed(struct scsi_device * sdev,const unsigned char * vendor,const unsigned char * model,int key)582 int scsi_get_device_flags_keyed(struct scsi_device *sdev,
583 const unsigned char *vendor,
584 const unsigned char *model,
585 int key)
586 {
587 struct scsi_dev_info_list *devinfo;
588
589 devinfo = scsi_dev_info_list_find(vendor, model, key);
590 if (!IS_ERR(devinfo))
591 return devinfo->flags;
592
593 /* key or device not found: return nothing */
594 if (key != SCSI_DEVINFO_GLOBAL)
595 return 0;
596
597 /* except for the global list, where we have an exception */
598 if (sdev->sdev_bflags)
599 return sdev->sdev_bflags;
600
601 return scsi_default_dev_flags;
602 }
603 EXPORT_SYMBOL(scsi_get_device_flags_keyed);
604
605 #ifdef CONFIG_SCSI_PROC_FS
606 struct double_list {
607 struct list_head *top;
608 struct list_head *bottom;
609 };
610
devinfo_seq_show(struct seq_file * m,void * v)611 static int devinfo_seq_show(struct seq_file *m, void *v)
612 {
613 struct double_list *dl = v;
614 struct scsi_dev_info_list_table *devinfo_table =
615 list_entry(dl->top, struct scsi_dev_info_list_table, node);
616 struct scsi_dev_info_list *devinfo =
617 list_entry(dl->bottom, struct scsi_dev_info_list,
618 dev_info_list);
619
620 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
621 devinfo_table->name)
622 seq_printf(m, "[%s]:\n", devinfo_table->name);
623
624 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
625 devinfo->vendor, devinfo->model, devinfo->flags);
626 return 0;
627 }
628
devinfo_seq_start(struct seq_file * m,loff_t * ppos)629 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
630 {
631 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
632 loff_t pos = *ppos;
633
634 if (!dl)
635 return NULL;
636
637 list_for_each(dl->top, &scsi_dev_info_list) {
638 struct scsi_dev_info_list_table *devinfo_table =
639 list_entry(dl->top, struct scsi_dev_info_list_table,
640 node);
641 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
642 if (pos-- == 0)
643 return dl;
644 }
645
646 kfree(dl);
647 return NULL;
648 }
649
devinfo_seq_next(struct seq_file * m,void * v,loff_t * ppos)650 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
651 {
652 struct double_list *dl = v;
653 struct scsi_dev_info_list_table *devinfo_table =
654 list_entry(dl->top, struct scsi_dev_info_list_table, node);
655
656 ++*ppos;
657 dl->bottom = dl->bottom->next;
658 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
659 dl->top = dl->top->next;
660 if (dl->top == &scsi_dev_info_list) {
661 kfree(dl);
662 return NULL;
663 }
664 devinfo_table = list_entry(dl->top,
665 struct scsi_dev_info_list_table,
666 node);
667 dl->bottom = devinfo_table->scsi_dev_info_list.next;
668 }
669
670 return dl;
671 }
672
devinfo_seq_stop(struct seq_file * m,void * v)673 static void devinfo_seq_stop(struct seq_file *m, void *v)
674 {
675 kfree(v);
676 }
677
678 static const struct seq_operations scsi_devinfo_seq_ops = {
679 .start = devinfo_seq_start,
680 .next = devinfo_seq_next,
681 .stop = devinfo_seq_stop,
682 .show = devinfo_seq_show,
683 };
684
proc_scsi_devinfo_open(struct inode * inode,struct file * file)685 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
686 {
687 return seq_open(file, &scsi_devinfo_seq_ops);
688 }
689
690 /*
691 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
692 *
693 * Description: Adds a black/white list entry for vendor and model with an
694 * integer value of flag to the scsi device info list.
695 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
696 */
proc_scsi_devinfo_write(struct file * file,const char __user * buf,size_t length,loff_t * ppos)697 static ssize_t proc_scsi_devinfo_write(struct file *file,
698 const char __user *buf,
699 size_t length, loff_t *ppos)
700 {
701 char *buffer;
702 ssize_t err = length;
703
704 if (!buf || length>PAGE_SIZE)
705 return -EINVAL;
706 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
707 return -ENOMEM;
708 if (copy_from_user(buffer, buf, length)) {
709 err =-EFAULT;
710 goto out;
711 }
712
713 if (length < PAGE_SIZE)
714 buffer[length] = '\0';
715 else if (buffer[PAGE_SIZE-1]) {
716 err = -EINVAL;
717 goto out;
718 }
719
720 scsi_dev_info_list_add_str(buffer);
721
722 out:
723 free_page((unsigned long)buffer);
724 return err;
725 }
726
727 static const struct file_operations scsi_devinfo_proc_fops = {
728 .owner = THIS_MODULE,
729 .open = proc_scsi_devinfo_open,
730 .read = seq_read,
731 .write = proc_scsi_devinfo_write,
732 .llseek = seq_lseek,
733 .release = seq_release,
734 };
735 #endif /* CONFIG_SCSI_PROC_FS */
736
737 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
738 MODULE_PARM_DESC(dev_flags,
739 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
740 " list entries for vendor and model with an integer value of flags"
741 " to the scsi device info list");
742
743 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
744 MODULE_PARM_DESC(default_dev_flags,
745 "scsi default device flag integer value");
746
747 /**
748 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
749 **/
scsi_exit_devinfo(void)750 void scsi_exit_devinfo(void)
751 {
752 #ifdef CONFIG_SCSI_PROC_FS
753 remove_proc_entry("scsi/device_info", NULL);
754 #endif
755
756 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
757 }
758
759 /**
760 * scsi_dev_info_add_list - add a new devinfo list
761 * @key: key of the list to add
762 * @name: Name of the list to add (for /proc/scsi/device_info)
763 *
764 * Adds the requested list, returns zero on success, -EEXIST if the
765 * key is already registered to a list, or other error on failure.
766 */
scsi_dev_info_add_list(int key,const char * name)767 int scsi_dev_info_add_list(int key, const char *name)
768 {
769 struct scsi_dev_info_list_table *devinfo_table =
770 scsi_devinfo_lookup_by_key(key);
771
772 if (!IS_ERR(devinfo_table))
773 /* list already exists */
774 return -EEXIST;
775
776 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
777
778 if (!devinfo_table)
779 return -ENOMEM;
780
781 INIT_LIST_HEAD(&devinfo_table->node);
782 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
783 devinfo_table->name = name;
784 devinfo_table->key = key;
785 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
786
787 return 0;
788 }
789 EXPORT_SYMBOL(scsi_dev_info_add_list);
790
791 /**
792 * scsi_dev_info_remove_list - destroy an added devinfo list
793 * @key: key of the list to destroy
794 *
795 * Iterates over the entire list first, freeing all the values, then
796 * frees the list itself. Returns 0 on success or -EINVAL if the key
797 * can't be found.
798 */
scsi_dev_info_remove_list(int key)799 int scsi_dev_info_remove_list(int key)
800 {
801 struct list_head *lh, *lh_next;
802 struct scsi_dev_info_list_table *devinfo_table =
803 scsi_devinfo_lookup_by_key(key);
804
805 if (IS_ERR(devinfo_table))
806 /* no such list */
807 return -EINVAL;
808
809 /* remove from the master list */
810 list_del(&devinfo_table->node);
811
812 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
813 struct scsi_dev_info_list *devinfo;
814
815 devinfo = list_entry(lh, struct scsi_dev_info_list,
816 dev_info_list);
817 kfree(devinfo);
818 }
819 kfree(devinfo_table);
820
821 return 0;
822 }
823 EXPORT_SYMBOL(scsi_dev_info_remove_list);
824
825 /**
826 * scsi_init_devinfo - set up the dynamic device list.
827 *
828 * Description:
829 * Add command line entries from scsi_dev_flags, then add
830 * scsi_static_device_list entries to the scsi device info list.
831 */
scsi_init_devinfo(void)832 int __init scsi_init_devinfo(void)
833 {
834 #ifdef CONFIG_SCSI_PROC_FS
835 struct proc_dir_entry *p;
836 #endif
837 int error, i;
838
839 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
840 if (error)
841 return error;
842
843 error = scsi_dev_info_list_add_str(scsi_dev_flags);
844 if (error)
845 goto out;
846
847 for (i = 0; scsi_static_device_list[i].vendor; i++) {
848 error = scsi_dev_info_list_add(1 /* compatibile */,
849 scsi_static_device_list[i].vendor,
850 scsi_static_device_list[i].model,
851 NULL,
852 scsi_static_device_list[i].flags);
853 if (error)
854 goto out;
855 }
856
857 #ifdef CONFIG_SCSI_PROC_FS
858 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
859 if (!p) {
860 error = -ENOMEM;
861 goto out;
862 }
863 #endif /* CONFIG_SCSI_PROC_FS */
864
865 out:
866 if (error)
867 scsi_exit_devinfo();
868 return error;
869 }
870