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1da177e4 LT |
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 | ||
10 | #include <scsi/scsi_device.h> | |
11 | #include <scsi/scsi_devinfo.h> | |
12 | ||
13 | #include "scsi_priv.h" | |
14 | ||
15 | ||
16 | /* | |
17 | * scsi_dev_info_list: structure to hold black/white listed devices. | |
18 | */ | |
19 | struct scsi_dev_info_list { | |
20 | struct list_head dev_info_list; | |
21 | char vendor[8]; | |
22 | char model[16]; | |
23 | unsigned flags; | |
24 | unsigned compatible; /* for use with scsi_static_device_list entries */ | |
25 | }; | |
26 | ||
27 | ||
28 | static const char spaces[] = " "; /* 16 of them */ | |
29 | static unsigned scsi_default_dev_flags; | |
30 | static LIST_HEAD(scsi_dev_info_list); | |
31 | static char scsi_dev_flags[256]; | |
32 | ||
33 | /* | |
34 | * scsi_static_device_list: deprecated list of devices that require | |
35 | * settings that differ from the default, includes black-listed (broken) | |
36 | * devices. The entries here are added to the tail of scsi_dev_info_list | |
37 | * via scsi_dev_info_list_init. | |
38 | * | |
39 | * Do not add to this list, use the command line or proc interface to add | |
40 | * to the scsi_dev_info_list. This table will eventually go away. | |
41 | */ | |
42 | static struct { | |
43 | char *vendor; | |
44 | char *model; | |
45 | char *revision; /* revision known to be bad, unused */ | |
46 | unsigned flags; | |
47 | } scsi_static_device_list[] __initdata = { | |
48 | /* | |
49 | * The following devices are known not to tolerate a lun != 0 scan | |
50 | * for one reason or another. Some will respond to all luns, | |
51 | * others will lock up. | |
52 | */ | |
53 | {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ | |
54 | {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ | |
55 | {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ | |
56 | {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ | |
57 | {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ | |
58 | {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ | |
59 | {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ | |
60 | {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ | |
61 | {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ | |
62 | {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ | |
63 | {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ | |
64 | {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ | |
65 | {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ | |
66 | {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ | |
67 | {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ | |
68 | {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ | |
69 | {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ | |
70 | {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ | |
71 | /* | |
72 | * The following causes a failed REQUEST SENSE on lun 1 for | |
73 | * aha152x controller, which causes SCSI code to reset bus. | |
74 | */ | |
75 | {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, | |
76 | /* | |
77 | * The following causes a failed REQUEST SENSE on lun 1 for | |
78 | * aha152x controller, which causes SCSI code to reset bus. | |
79 | */ | |
80 | {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, | |
81 | {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ | |
82 | {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ | |
83 | {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, | |
84 | {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, | |
85 | {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, | |
86 | {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, | |
87 | {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, | |
88 | {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ | |
89 | {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ | |
90 | /* | |
91 | * The following causes a failed REQUEST SENSE on lun 1 for | |
92 | * seagate controller, which causes SCSI code to reset bus. | |
93 | */ | |
94 | {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, | |
95 | {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ | |
96 | /* | |
97 | * The following causes a failed REQUEST SENSE on lun 1 for | |
98 | * seagate controller, which causes SCSI code to reset bus. | |
99 | */ | |
100 | {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ | |
101 | {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */ | |
102 | {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */ | |
103 | {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ | |
104 | {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ | |
105 | {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ | |
106 | {"NEC", "D3856", "0009", BLIST_NOLUN}, | |
107 | {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ | |
108 | {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ | |
109 | {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ | |
110 | {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ | |
111 | {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ | |
112 | {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN}, | |
1c536315 | 113 | {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, |
1da177e4 LT |
114 | {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ |
115 | {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ | |
116 | {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ | |
117 | {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ | |
0d7323c8 | 118 | {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ |
1da177e4 LT |
119 | |
120 | /* | |
121 | * Other types of devices that have special flags. | |
122 | * Note that all USB devices should have the BLIST_INQUIRY_36 flag. | |
123 | */ | |
124 | {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, | |
125 | {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, | |
126 | {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, | |
127 | {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, | |
128 | {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, | |
98acfc7e | 129 | {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, |
1da177e4 LT |
130 | {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, |
131 | {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, | |
132 | {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ | |
133 | {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ | |
134 | {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ | |
4d7db04a JB |
135 | {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | |
136 | BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ | |
137 | {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ | |
1da177e4 LT |
138 | {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, |
139 | {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, | |
140 | {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, | |
141 | {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, | |
142 | {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, | |
507caac7 | 143 | {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, |
1da177e4 LT |
144 | {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, |
145 | {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, | |
146 | {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ | |
147 | {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, | |
148 | {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, | |
149 | {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ | |
150 | {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ | |
151 | {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, | |
152 | {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, | |
153 | {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, | |
154 | {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, | |
155 | {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, | |
156 | {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, | |
157 | {"HITACHI", "DF400", "*", BLIST_SPARSELUN}, | |
158 | {"HITACHI", "DF500", "*", BLIST_SPARSELUN}, | |
159 | {"HITACHI", "DF600", "*", BLIST_SPARSELUN}, | |
160 | {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ | |
161 | {"HP", "OPEN-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP XP Arrays */ | |
162 | {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, | |
163 | {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, | |
164 | {"HP", "C1557A", NULL, BLIST_FORCELUN}, | |
165 | {"HP", "C3323-300", "4269", BLIST_NOTQ}, | |
166 | {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, | |
167 | {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, | |
168 | {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, | |
169 | {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, | |
170 | {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, | |
171 | {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, | |
172 | {"INSITE", "I325VM", NULL, BLIST_KEY}, | |
173 | {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, | |
174 | {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, | |
175 | {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, | |
176 | {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, | |
177 | {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, | |
178 | {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, | |
179 | {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, | |
180 | {"MICROP", "4110", NULL, BLIST_NOTQ}, | |
181 | {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, | |
182 | {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, | |
183 | {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, | |
184 | {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, | |
185 | {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, | |
186 | {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, | |
187 | {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, | |
188 | {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, | |
189 | {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, | |
190 | {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, | |
f4fd20bf | 191 | {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, |
1da177e4 LT |
192 | {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, |
193 | {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, | |
194 | {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ | |
195 | {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, | |
196 | {"SGI", "RAID3", "*", BLIST_SPARSELUN}, | |
197 | {"SGI", "RAID5", "*", BLIST_SPARSELUN}, | |
198 | {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, | |
199 | {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, | |
48690405 | 200 | {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, |
1da177e4 LT |
201 | {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, |
202 | {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, | |
203 | {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ | |
204 | {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, | |
205 | {"SUN", "T300", "*", BLIST_SPARSELUN}, | |
206 | {"SUN", "T4", "*", BLIST_SPARSELUN}, | |
207 | {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, | |
208 | {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, | |
209 | {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, | |
210 | {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, | |
211 | {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, | |
212 | {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, | |
213 | {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, | |
214 | {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, | |
215 | {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, | |
216 | {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, | |
217 | {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, | |
218 | { NULL, NULL, NULL, 0 }, | |
219 | }; | |
220 | ||
221 | /* | |
222 | * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into | |
223 | * devinfo vendor and model strings. | |
224 | */ | |
225 | static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, | |
226 | char *from, int compatible) | |
227 | { | |
228 | size_t from_length; | |
229 | ||
230 | from_length = strlen(from); | |
231 | strncpy(to, from, min(to_length, from_length)); | |
232 | if (from_length < to_length) { | |
233 | if (compatible) { | |
234 | /* | |
235 | * NUL terminate the string if it is short. | |
236 | */ | |
237 | to[from_length] = '\0'; | |
238 | } else { | |
239 | /* | |
240 | * space pad the string if it is short. | |
241 | */ | |
242 | strncpy(&to[from_length], spaces, | |
243 | to_length - from_length); | |
244 | } | |
245 | } | |
246 | if (from_length > to_length) | |
247 | printk(KERN_WARNING "%s: %s string '%s' is too long\n", | |
248 | __FUNCTION__, name, from); | |
249 | } | |
250 | ||
251 | /** | |
252 | * scsi_dev_info_list_add: add one dev_info list entry. | |
253 | * @vendor: vendor string | |
254 | * @model: model (product) string | |
255 | * @strflags: integer string | |
256 | * @flag: if strflags NULL, use this flag value | |
257 | * | |
258 | * Description: | |
259 | * Create and add one dev_info entry for @vendor, @model, @strflags or | |
260 | * @flag. If @compatible, add to the tail of the list, do not space | |
261 | * pad, and set devinfo->compatible. The scsi_static_device_list entries | |
262 | * are added with @compatible 1 and @clfags NULL. | |
263 | * | |
264 | * Returns: 0 OK, -error on failure. | |
265 | **/ | |
266 | static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, | |
267 | char *strflags, int flags) | |
268 | { | |
269 | struct scsi_dev_info_list *devinfo; | |
270 | ||
271 | devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); | |
272 | if (!devinfo) { | |
273 | printk(KERN_ERR "%s: no memory\n", __FUNCTION__); | |
274 | return -ENOMEM; | |
275 | } | |
276 | ||
277 | scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), | |
278 | vendor, compatible); | |
279 | scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), | |
280 | model, compatible); | |
281 | ||
282 | if (strflags) | |
283 | devinfo->flags = simple_strtoul(strflags, NULL, 0); | |
284 | else | |
285 | devinfo->flags = flags; | |
286 | ||
287 | devinfo->compatible = compatible; | |
288 | ||
289 | if (compatible) | |
290 | list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list); | |
291 | else | |
292 | list_add(&devinfo->dev_info_list, &scsi_dev_info_list); | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | /** | |
298 | * scsi_dev_info_list_add_str: parse dev_list and add to the | |
299 | * scsi_dev_info_list. | |
300 | * @dev_list: string of device flags to add | |
301 | * | |
302 | * Description: | |
303 | * Parse dev_list, and add entries to the scsi_dev_info_list. | |
304 | * dev_list is of the form "vendor:product:flag,vendor:product:flag". | |
305 | * dev_list is modified via strsep. Can be called for command line | |
306 | * addition, for proc or mabye a sysfs interface. | |
307 | * | |
308 | * Returns: 0 if OK, -error on failure. | |
309 | **/ | |
310 | static int scsi_dev_info_list_add_str(char *dev_list) | |
311 | { | |
312 | char *vendor, *model, *strflags, *next; | |
313 | char *next_check; | |
314 | int res = 0; | |
315 | ||
316 | next = dev_list; | |
317 | if (next && next[0] == '"') { | |
318 | /* | |
319 | * Ignore both the leading and trailing quote. | |
320 | */ | |
321 | next++; | |
322 | next_check = ",\""; | |
323 | } else { | |
324 | next_check = ","; | |
325 | } | |
326 | ||
327 | /* | |
328 | * For the leading and trailing '"' case, the for loop comes | |
329 | * through the last time with vendor[0] == '\0'. | |
330 | */ | |
331 | for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') | |
332 | && (res == 0); vendor = strsep(&next, ":")) { | |
333 | strflags = NULL; | |
334 | model = strsep(&next, ":"); | |
335 | if (model) | |
336 | strflags = strsep(&next, next_check); | |
337 | if (!model || !strflags) { | |
338 | printk(KERN_ERR "%s: bad dev info string '%s' '%s'" | |
339 | " '%s'\n", __FUNCTION__, vendor, model, | |
340 | strflags); | |
341 | res = -EINVAL; | |
342 | } else | |
343 | res = scsi_dev_info_list_add(0 /* compatible */, vendor, | |
344 | model, strflags, 0); | |
345 | } | |
346 | return res; | |
347 | } | |
348 | ||
349 | /** | |
350 | * get_device_flags - get device specific flags from the dynamic device | |
351 | * list. Called during scan time. | |
352 | * @vendor: vendor name | |
353 | * @model: model name | |
354 | * | |
355 | * Description: | |
356 | * Search the scsi_dev_info_list for an entry matching @vendor and | |
357 | * @model, if found, return the matching flags value, else return | |
358 | * the host or global default settings. | |
359 | **/ | |
7f23e146 JB |
360 | int scsi_get_device_flags(struct scsi_device *sdev, |
361 | const unsigned char *vendor, | |
362 | const unsigned char *model) | |
1da177e4 LT |
363 | { |
364 | struct scsi_dev_info_list *devinfo; | |
365 | unsigned int bflags; | |
366 | ||
367 | bflags = sdev->sdev_bflags; | |
368 | if (!bflags) | |
369 | bflags = scsi_default_dev_flags; | |
370 | ||
371 | list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { | |
372 | if (devinfo->compatible) { | |
373 | /* | |
374 | * Behave like the older version of get_device_flags. | |
375 | */ | |
376 | size_t max; | |
377 | /* | |
378 | * XXX why skip leading spaces? If an odd INQUIRY | |
379 | * value, that should have been part of the | |
380 | * scsi_static_device_list[] entry, such as " FOO" | |
381 | * rather than "FOO". Since this code is already | |
382 | * here, and we don't know what device it is | |
383 | * trying to work with, leave it as-is. | |
384 | */ | |
385 | max = 8; /* max length of vendor */ | |
386 | while ((max > 0) && *vendor == ' ') { | |
387 | max--; | |
388 | vendor++; | |
389 | } | |
390 | /* | |
391 | * XXX removing the following strlen() would be | |
392 | * good, using it means that for a an entry not in | |
393 | * the list, we scan every byte of every vendor | |
394 | * listed in scsi_static_device_list[], and never match | |
395 | * a single one (and still have to compare at | |
396 | * least the first byte of each vendor). | |
397 | */ | |
398 | if (memcmp(devinfo->vendor, vendor, | |
399 | min(max, strlen(devinfo->vendor)))) | |
400 | continue; | |
401 | /* | |
402 | * Skip spaces again. | |
403 | */ | |
404 | max = 16; /* max length of model */ | |
405 | while ((max > 0) && *model == ' ') { | |
406 | max--; | |
407 | model++; | |
408 | } | |
409 | if (memcmp(devinfo->model, model, | |
410 | min(max, strlen(devinfo->model)))) | |
411 | continue; | |
412 | return devinfo->flags; | |
413 | } else { | |
414 | if (!memcmp(devinfo->vendor, vendor, | |
415 | sizeof(devinfo->vendor)) && | |
416 | !memcmp(devinfo->model, model, | |
417 | sizeof(devinfo->model))) | |
418 | return devinfo->flags; | |
419 | } | |
420 | } | |
421 | return bflags; | |
422 | } | |
423 | ||
424 | #ifdef CONFIG_SCSI_PROC_FS | |
425 | /* | |
426 | * proc_scsi_dev_info_read: dump the scsi_dev_info_list via | |
427 | * /proc/scsi/device_info | |
428 | */ | |
429 | static int proc_scsi_devinfo_read(char *buffer, char **start, | |
430 | off_t offset, int length) | |
431 | { | |
432 | struct scsi_dev_info_list *devinfo; | |
433 | int size, len = 0; | |
434 | off_t begin = 0; | |
435 | off_t pos = 0; | |
436 | ||
437 | list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) { | |
438 | size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n", | |
439 | devinfo->vendor, devinfo->model, devinfo->flags); | |
440 | len += size; | |
441 | pos = begin + len; | |
442 | if (pos < offset) { | |
443 | len = 0; | |
444 | begin = pos; | |
445 | } | |
446 | if (pos > offset + length) | |
447 | goto stop_output; | |
448 | } | |
449 | ||
450 | stop_output: | |
451 | *start = buffer + (offset - begin); /* Start of wanted data */ | |
452 | len -= (offset - begin); /* Start slop */ | |
453 | if (len > length) | |
454 | len = length; /* Ending slop */ | |
455 | return (len); | |
456 | } | |
457 | ||
458 | /* | |
459 | * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via | |
460 | * /proc. | |
461 | * | |
462 | * Use: echo "vendor:model:flag" > /proc/scsi/device_info | |
463 | * | |
464 | * To add a black/white list entry for vendor and model with an integer | |
465 | * value of flag to the scsi device info list. | |
466 | */ | |
467 | static int proc_scsi_devinfo_write(struct file *file, const char __user *buf, | |
468 | unsigned long length, void *data) | |
469 | { | |
470 | char *buffer; | |
471 | int err = length; | |
472 | ||
473 | if (!buf || length>PAGE_SIZE) | |
474 | return -EINVAL; | |
475 | if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) | |
476 | return -ENOMEM; | |
477 | if (copy_from_user(buffer, buf, length)) { | |
478 | err =-EFAULT; | |
479 | goto out; | |
480 | } | |
481 | ||
482 | if (length < PAGE_SIZE) | |
483 | buffer[length] = '\0'; | |
484 | else if (buffer[PAGE_SIZE-1]) { | |
485 | err = -EINVAL; | |
486 | goto out; | |
487 | } | |
488 | ||
489 | scsi_dev_info_list_add_str(buffer); | |
490 | ||
491 | out: | |
492 | free_page((unsigned long)buffer); | |
493 | return err; | |
494 | } | |
495 | #endif /* CONFIG_SCSI_PROC_FS */ | |
496 | ||
497 | module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); | |
498 | MODULE_PARM_DESC(dev_flags, | |
499 | "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" | |
500 | " list entries for vendor and model with an integer value of flags" | |
501 | " to the scsi device info list"); | |
502 | ||
503 | module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); | |
504 | MODULE_PARM_DESC(default_dev_flags, | |
505 | "scsi default device flag integer value"); | |
506 | ||
507 | /** | |
508 | * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove | |
509 | * the scsi_dev_info_list. | |
510 | **/ | |
511 | void scsi_exit_devinfo(void) | |
512 | { | |
513 | struct list_head *lh, *lh_next; | |
514 | struct scsi_dev_info_list *devinfo; | |
515 | ||
516 | #ifdef CONFIG_SCSI_PROC_FS | |
517 | remove_proc_entry("scsi/device_info", NULL); | |
518 | #endif | |
519 | ||
520 | list_for_each_safe(lh, lh_next, &scsi_dev_info_list) { | |
521 | devinfo = list_entry(lh, struct scsi_dev_info_list, | |
522 | dev_info_list); | |
523 | kfree(devinfo); | |
524 | } | |
525 | } | |
526 | ||
527 | /** | |
528 | * scsi_dev_list_init: set up the dynamic device list. | |
529 | * @dev_list: string of device flags to add | |
530 | * | |
531 | * Description: | |
532 | * Add command line @dev_list entries, then add | |
533 | * scsi_static_device_list entries to the scsi device info list. | |
534 | **/ | |
535 | int __init scsi_init_devinfo(void) | |
536 | { | |
537 | #ifdef CONFIG_SCSI_PROC_FS | |
538 | struct proc_dir_entry *p; | |
539 | #endif | |
540 | int error, i; | |
541 | ||
542 | error = scsi_dev_info_list_add_str(scsi_dev_flags); | |
543 | if (error) | |
544 | return error; | |
545 | ||
546 | for (i = 0; scsi_static_device_list[i].vendor; i++) { | |
547 | error = scsi_dev_info_list_add(1 /* compatibile */, | |
548 | scsi_static_device_list[i].vendor, | |
549 | scsi_static_device_list[i].model, | |
550 | NULL, | |
551 | scsi_static_device_list[i].flags); | |
552 | if (error) | |
553 | goto out; | |
554 | } | |
555 | ||
556 | #ifdef CONFIG_SCSI_PROC_FS | |
557 | p = create_proc_entry("scsi/device_info", 0, NULL); | |
558 | if (!p) { | |
559 | error = -ENOMEM; | |
560 | goto out; | |
561 | } | |
562 | ||
563 | p->owner = THIS_MODULE; | |
564 | p->get_info = proc_scsi_devinfo_read; | |
565 | p->write_proc = proc_scsi_devinfo_write; | |
566 | #endif /* CONFIG_SCSI_PROC_FS */ | |
567 | ||
568 | out: | |
569 | if (error) | |
570 | scsi_exit_devinfo(); | |
571 | return error; | |
572 | } |