Branch data Line data Source code
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 : : {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
206 : : {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
207 : : {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
208 : : {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
209 : : {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
210 : : {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
211 : : {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
212 : : {"MICROP", "4110", NULL, BLIST_NOTQ},
213 : : {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
214 : : {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
215 : : {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
216 : : {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
217 : : {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
218 : : {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
219 : : {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 : : {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
221 : : {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
222 : : {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
223 : : {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
224 : : {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
225 : : {"Promise", "", NULL, BLIST_SPARSELUN},
226 : : {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
227 : : {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
228 : : {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
229 : : {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
230 : : {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
231 : : {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
232 : : {"SGI", "RAID3", "*", BLIST_SPARSELUN},
233 : : {"SGI", "RAID5", "*", BLIST_SPARSELUN},
234 : : {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
235 : : {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
236 : : {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
237 : : {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
238 : : {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
239 : : {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
240 : : {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
241 : : {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
242 : : {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
243 : : {"SUN", "T300", "*", BLIST_SPARSELUN},
244 : : {"SUN", "T4", "*", BLIST_SPARSELUN},
245 : : {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
246 : : {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
247 : : {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
248 : : {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
249 : : {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
250 : : {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
251 : : {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
252 : : {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
253 : : {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
254 : : {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
255 : : {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
256 : : {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
257 : : {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
258 : : { NULL, NULL, NULL, 0 },
259 : : };
260 : :
261 : : static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
262 : : {
263 : : struct scsi_dev_info_list_table *devinfo_table;
264 : : int found = 0;
265 : :
266 [ # # ][ # # ]: 0 : list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
[ # # ][ # # ]
[ # # ]
267 [ # # ][ # # ]: 0 : if (devinfo_table->key == key) {
[ # # ][ # # ]
[ # # ]
268 : : found = 1;
269 : : break;
270 : : }
271 [ # # ][ # # ]: 0 : if (!found)
[ # # ][ # # ]
[ # # ]
272 : : return ERR_PTR(-EINVAL);
273 : :
274 : : return devinfo_table;
275 : : }
276 : :
277 : : /*
278 : : * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
279 : : * devinfo vendor and model strings.
280 : : */
281 : 0 : static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
282 : : char *from, int compatible)
283 : : {
284 : : size_t from_length;
285 : :
286 : 0 : from_length = strlen(from);
287 : 0 : strncpy(to, from, min(to_length, from_length));
288 [ # # ]: 0 : if (from_length < to_length) {
289 [ # # ]: 0 : if (compatible) {
290 : : /*
291 : : * NUL terminate the string if it is short.
292 : : */
293 : 0 : to[from_length] = '\0';
294 : : } else {
295 : : /*
296 : : * space pad the string if it is short.
297 : : */
298 : 0 : strncpy(&to[from_length], spaces,
299 : : to_length - from_length);
300 : : }
301 : : }
302 [ # # ]: 0 : if (from_length > to_length)
303 : 0 : printk(KERN_WARNING "%s: %s string '%s' is too long\n",
304 : : __func__, name, from);
305 : 0 : }
306 : :
307 : : /**
308 : : * scsi_dev_info_list_add - add one dev_info list entry.
309 : : * @compatible: if true, null terminate short strings. Otherwise space pad.
310 : : * @vendor: vendor string
311 : : * @model: model (product) string
312 : : * @strflags: integer string
313 : : * @flags: if strflags NULL, use this flag value
314 : : *
315 : : * Description:
316 : : * Create and add one dev_info entry for @vendor, @model, @strflags or
317 : : * @flag. If @compatible, add to the tail of the list, do not space
318 : : * pad, and set devinfo->compatible. The scsi_static_device_list entries
319 : : * are added with @compatible 1 and @clfags NULL.
320 : : *
321 : : * Returns: 0 OK, -error on failure.
322 : : **/
323 : : static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
324 : : char *strflags, int flags)
325 : : {
326 : 0 : return scsi_dev_info_list_add_keyed(compatible, vendor, model,
327 : : strflags, flags,
328 : : SCSI_DEVINFO_GLOBAL);
329 : : }
330 : :
331 : : /**
332 : : * scsi_dev_info_list_add_keyed - add one dev_info list entry.
333 : : * @compatible: if true, null terminate short strings. Otherwise space pad.
334 : : * @vendor: vendor string
335 : : * @model: model (product) string
336 : : * @strflags: integer string
337 : : * @flags: if strflags NULL, use this flag value
338 : : * @key: specify list to use
339 : : *
340 : : * Description:
341 : : * Create and add one dev_info entry for @vendor, @model,
342 : : * @strflags or @flag in list specified by @key. If @compatible,
343 : : * add to the tail of the list, do not space pad, and set
344 : : * devinfo->compatible. The scsi_static_device_list entries are
345 : : * added with @compatible 1 and @clfags NULL.
346 : : *
347 : : * Returns: 0 OK, -error on failure.
348 : : **/
349 : 0 : int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
350 : : char *strflags, int flags, int key)
351 : : {
352 : : struct scsi_dev_info_list *devinfo;
353 : : struct scsi_dev_info_list_table *devinfo_table =
354 : : scsi_devinfo_lookup_by_key(key);
355 : :
356 [ # # ]: 0 : if (IS_ERR(devinfo_table))
357 : 0 : return PTR_ERR(devinfo_table);
358 : :
359 : : devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
360 [ # # ]: 0 : if (!devinfo) {
361 : 0 : printk(KERN_ERR "%s: no memory\n", __func__);
362 : 0 : return -ENOMEM;
363 : : }
364 : :
365 : 0 : scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
366 : : vendor, compatible);
367 : 0 : scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
368 : : model, compatible);
369 : :
370 [ # # ]: 0 : if (strflags)
371 : 0 : devinfo->flags = simple_strtoul(strflags, NULL, 0);
372 : : else
373 : 0 : devinfo->flags = flags;
374 : :
375 : 0 : devinfo->compatible = compatible;
376 : :
377 [ # # ]: 0 : if (compatible)
378 : 0 : list_add_tail(&devinfo->dev_info_list,
379 : : &devinfo_table->scsi_dev_info_list);
380 : : else
381 : 0 : list_add(&devinfo->dev_info_list,
382 : : &devinfo_table->scsi_dev_info_list);
383 : :
384 : : return 0;
385 : : }
386 : : EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
387 : :
388 : : /**
389 : : * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
390 : : * @vendor: vendor string
391 : : * @model: model (product) string
392 : : * @key: specify list to use
393 : : *
394 : : * Description:
395 : : * Remove and destroy one dev_info entry for @vendor, @model
396 : : * in list specified by @key.
397 : : *
398 : : * Returns: 0 OK, -error on failure.
399 : : **/
400 : 0 : int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
401 : : {
402 : : struct scsi_dev_info_list *devinfo, *found = NULL;
403 : : struct scsi_dev_info_list_table *devinfo_table =
404 : : scsi_devinfo_lookup_by_key(key);
405 : :
406 [ # # ]: 0 : if (IS_ERR(devinfo_table))
407 : 0 : return PTR_ERR(devinfo_table);
408 : :
409 [ # # ]: 0 : list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
410 : : dev_info_list) {
411 [ # # ]: 0 : if (devinfo->compatible) {
412 : : /*
413 : : * Behave like the older version of get_device_flags.
414 : : */
415 : : size_t max;
416 : : /*
417 : : * XXX why skip leading spaces? If an odd INQUIRY
418 : : * value, that should have been part of the
419 : : * scsi_static_device_list[] entry, such as " FOO"
420 : : * rather than "FOO". Since this code is already
421 : : * here, and we don't know what device it is
422 : : * trying to work with, leave it as-is.
423 : : */
424 : : max = 8; /* max length of vendor */
425 [ # # ][ # # ]: 0 : while ((max > 0) && *vendor == ' ') {
426 : 0 : max--;
427 : 0 : vendor++;
428 : : }
429 : : /*
430 : : * XXX removing the following strlen() would be
431 : : * good, using it means that for a an entry not in
432 : : * the list, we scan every byte of every vendor
433 : : * listed in scsi_static_device_list[], and never match
434 : : * a single one (and still have to compare at
435 : : * least the first byte of each vendor).
436 : : */
437 [ # # ]: 0 : if (memcmp(devinfo->vendor, vendor,
438 : 0 : min(max, strlen(devinfo->vendor))))
439 : 0 : continue;
440 : : /*
441 : : * Skip spaces again.
442 : : */
443 : : max = 16; /* max length of model */
444 [ # # ][ # # ]: 0 : while ((max > 0) && *model == ' ') {
445 : 0 : max--;
446 : 0 : model++;
447 : : }
448 [ # # ]: 0 : if (memcmp(devinfo->model, model,
449 : 0 : min(max, strlen(devinfo->model))))
450 : 0 : continue;
451 : : found = devinfo;
452 : : } else {
453 [ # # ]: 0 : if (!memcmp(devinfo->vendor, vendor,
454 [ # # ]: 0 : sizeof(devinfo->vendor)) &&
455 : 0 : !memcmp(devinfo->model, model,
456 : : sizeof(devinfo->model)))
457 : : found = devinfo;
458 : : }
459 [ # # ]: 0 : if (found)
460 : : break;
461 : : }
462 : :
463 [ # # ]: 0 : if (found) {
464 : : list_del(&found->dev_info_list);
465 : 0 : kfree(found);
466 : 0 : return 0;
467 : : }
468 : :
469 : : return -ENOENT;
470 : : }
471 : : EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
472 : :
473 : : /**
474 : : * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
475 : : * @dev_list: string of device flags to add
476 : : *
477 : : * Description:
478 : : * Parse dev_list, and add entries to the scsi_dev_info_list.
479 : : * dev_list is of the form "vendor:product:flag,vendor:product:flag".
480 : : * dev_list is modified via strsep. Can be called for command line
481 : : * addition, for proc or mabye a sysfs interface.
482 : : *
483 : : * Returns: 0 if OK, -error on failure.
484 : : **/
485 : 0 : static int scsi_dev_info_list_add_str(char *dev_list)
486 : : {
487 : : char *vendor, *model, *strflags, *next;
488 : : char *next_check;
489 : : int res = 0;
490 : :
491 : 0 : next = dev_list;
492 [ # # ][ # # ]: 0 : if (next && next[0] == '"') {
493 : : /*
494 : : * Ignore both the leading and trailing quote.
495 : : */
496 : 0 : next++;
497 : 0 : next_check = ",\"";
498 : : } else {
499 : : next_check = ",";
500 : : }
501 : :
502 : : /*
503 : : * For the leading and trailing '"' case, the for loop comes
504 : : * through the last time with vendor[0] == '\0'.
505 : : */
506 [ # # ][ # # ]: 0 : for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
507 [ # # ]: 0 : && (res == 0); vendor = strsep(&next, ":")) {
508 : : strflags = NULL;
509 : 0 : model = strsep(&next, ":");
510 [ # # ]: 0 : if (model)
511 : 0 : strflags = strsep(&next, next_check);
512 [ # # ]: 0 : if (!model || !strflags) {
513 : 0 : printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
514 : : " '%s'\n", __func__, vendor, model,
515 : : strflags);
516 : : res = -EINVAL;
517 : : } else
518 : : res = scsi_dev_info_list_add(0 /* compatible */, vendor,
519 : : model, strflags, 0);
520 : : }
521 : 0 : return res;
522 : : }
523 : :
524 : : /**
525 : : * get_device_flags - get device specific flags from the dynamic device list.
526 : : * @sdev: &scsi_device to get flags for
527 : : * @vendor: vendor name
528 : : * @model: model name
529 : : *
530 : : * Description:
531 : : * Search the global scsi_dev_info_list (specified by list zero)
532 : : * for an entry matching @vendor and @model, if found, return the
533 : : * matching flags value, else return the host or global default
534 : : * settings. Called during scan time.
535 : : **/
536 : 0 : int scsi_get_device_flags(struct scsi_device *sdev,
537 : : const unsigned char *vendor,
538 : : const unsigned char *model)
539 : : {
540 : 0 : return scsi_get_device_flags_keyed(sdev, vendor, model,
541 : : SCSI_DEVINFO_GLOBAL);
542 : : }
543 : :
544 : :
545 : : /**
546 : : * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
547 : : * @sdev: &scsi_device to get flags for
548 : : * @vendor: vendor name
549 : : * @model: model name
550 : : * @key: list to look up
551 : : *
552 : : * Description:
553 : : * Search the scsi_dev_info_list specified by @key for an entry
554 : : * matching @vendor and @model, if found, return the matching
555 : : * flags value, else return the host or global default settings.
556 : : * Called during scan time.
557 : : **/
558 : 0 : int scsi_get_device_flags_keyed(struct scsi_device *sdev,
559 : : const unsigned char *vendor,
560 : : const unsigned char *model,
561 : : int key)
562 : : {
563 : : struct scsi_dev_info_list *devinfo;
564 : : struct scsi_dev_info_list_table *devinfo_table;
565 : :
566 : : devinfo_table = scsi_devinfo_lookup_by_key(key);
567 : :
568 [ # # ]: 0 : if (IS_ERR(devinfo_table))
569 : 0 : return PTR_ERR(devinfo_table);
570 : :
571 [ # # ]: 0 : list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
572 : : dev_info_list) {
573 [ # # ]: 0 : if (devinfo->compatible) {
574 : : /*
575 : : * Behave like the older version of get_device_flags.
576 : : */
577 : : size_t max;
578 : : /*
579 : : * XXX why skip leading spaces? If an odd INQUIRY
580 : : * value, that should have been part of the
581 : : * scsi_static_device_list[] entry, such as " FOO"
582 : : * rather than "FOO". Since this code is already
583 : : * here, and we don't know what device it is
584 : : * trying to work with, leave it as-is.
585 : : */
586 : : max = 8; /* max length of vendor */
587 [ # # ][ # # ]: 0 : while ((max > 0) && *vendor == ' ') {
588 : 0 : max--;
589 : 0 : vendor++;
590 : : }
591 : : /*
592 : : * XXX removing the following strlen() would be
593 : : * good, using it means that for a an entry not in
594 : : * the list, we scan every byte of every vendor
595 : : * listed in scsi_static_device_list[], and never match
596 : : * a single one (and still have to compare at
597 : : * least the first byte of each vendor).
598 : : */
599 [ # # ]: 0 : if (memcmp(devinfo->vendor, vendor,
600 : 0 : min(max, strlen(devinfo->vendor))))
601 : 0 : continue;
602 : : /*
603 : : * Skip spaces again.
604 : : */
605 : : max = 16; /* max length of model */
606 [ # # ][ # # ]: 0 : while ((max > 0) && *model == ' ') {
607 : 0 : max--;
608 : 0 : model++;
609 : : }
610 [ # # ]: 0 : if (memcmp(devinfo->model, model,
611 : 0 : min(max, strlen(devinfo->model))))
612 : 0 : continue;
613 : 0 : return devinfo->flags;
614 : : } else {
615 [ # # ]: 0 : if (!memcmp(devinfo->vendor, vendor,
616 [ # # ]: 0 : sizeof(devinfo->vendor)) &&
617 : 0 : !memcmp(devinfo->model, model,
618 : : sizeof(devinfo->model)))
619 : 0 : return devinfo->flags;
620 : : }
621 : : }
622 : : /* nothing found, return nothing */
623 [ # # ]: 0 : if (key != SCSI_DEVINFO_GLOBAL)
624 : : return 0;
625 : :
626 : : /* except for the global list, where we have an exception */
627 [ # # ]: 0 : if (sdev->sdev_bflags)
628 : 0 : return sdev->sdev_bflags;
629 : :
630 : 0 : return scsi_default_dev_flags;
631 : : }
632 : : EXPORT_SYMBOL(scsi_get_device_flags_keyed);
633 : :
634 : : #ifdef CONFIG_SCSI_PROC_FS
635 : : struct double_list {
636 : : struct list_head *top;
637 : : struct list_head *bottom;
638 : : };
639 : :
640 : 0 : static int devinfo_seq_show(struct seq_file *m, void *v)
641 : : {
642 : : struct double_list *dl = v;
643 : : struct scsi_dev_info_list_table *devinfo_table =
644 : 175 : list_entry(dl->top, struct scsi_dev_info_list_table, node);
645 : : struct scsi_dev_info_list *devinfo =
646 : 175 : list_entry(dl->bottom, struct scsi_dev_info_list,
647 : : dev_info_list);
648 : :
649 [ + + ][ - + ]: 175 : if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
650 : 1 : devinfo_table->name)
651 : 0 : seq_printf(m, "[%s]:\n", devinfo_table->name);
652 : :
653 : 175 : seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
654 : 0 : devinfo->vendor, devinfo->model, devinfo->flags);
655 : 175 : return 0;
656 : : }
657 : :
658 : 0 : static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
659 : : {
660 : : struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
661 : 6 : loff_t pos = *ppos;
662 : :
663 [ + - ]: 6 : if (!dl)
664 : : return NULL;
665 : :
666 [ + + ]: 7 : list_for_each(dl->top, &scsi_dev_info_list) {
667 : : struct scsi_dev_info_list_table *devinfo_table =
668 : : list_entry(dl->top, struct scsi_dev_info_list_table,
669 : : node);
670 [ + + ]: 601 : list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
671 [ + ]: 594 : if (pos-- == 0)
672 : : return dl;
673 : : }
674 : :
675 : 1 : kfree(dl);
676 : 1 : return NULL;
677 : : }
678 : :
679 : 0 : static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
680 : : {
681 : : struct double_list *dl = v;
682 : : struct scsi_dev_info_list_table *devinfo_table =
683 : 171 : list_entry(dl->top, struct scsi_dev_info_list_table, node);
684 : :
685 : 171 : ++*ppos;
686 : 171 : dl->bottom = dl->bottom->next;
687 [ + + ]: 171 : while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
688 : 1 : dl->top = dl->top->next;
689 [ + - ]: 1 : if (dl->top == &scsi_dev_info_list) {
690 : 1 : kfree(dl);
691 : 1 : return NULL;
692 : : }
693 : : devinfo_table = list_entry(dl->top,
694 : : struct scsi_dev_info_list_table,
695 : : node);
696 : 0 : dl->bottom = devinfo_table->scsi_dev_info_list.next;
697 : : }
698 : :
699 : : return dl;
700 : : }
701 : :
702 : 0 : static void devinfo_seq_stop(struct seq_file *m, void *v)
703 : : {
704 : 6 : kfree(v);
705 : 6 : }
706 : :
707 : : static const struct seq_operations scsi_devinfo_seq_ops = {
708 : : .start = devinfo_seq_start,
709 : : .next = devinfo_seq_next,
710 : : .stop = devinfo_seq_stop,
711 : : .show = devinfo_seq_show,
712 : : };
713 : :
714 : 0 : static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
715 : : {
716 : 1 : return seq_open(file, &scsi_devinfo_seq_ops);
717 : : }
718 : :
719 : : /*
720 : : * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
721 : : *
722 : : * Description: Adds a black/white list entry for vendor and model with an
723 : : * integer value of flag to the scsi device info list.
724 : : * To use, echo "vendor:model:flag" > /proc/scsi/device_info
725 : : */
726 : 0 : static ssize_t proc_scsi_devinfo_write(struct file *file,
727 : : const char __user *buf,
728 : : size_t length, loff_t *ppos)
729 : : {
730 : : char *buffer;
731 : 0 : ssize_t err = length;
732 : :
733 [ # # ]: 0 : if (!buf || length>PAGE_SIZE)
734 : : return -EINVAL;
735 [ # # ]: 0 : if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
736 : : return -ENOMEM;
737 [ # # ]: 0 : if (copy_from_user(buffer, buf, length)) {
738 : : err =-EFAULT;
739 : : goto out;
740 : : }
741 : :
742 [ # # ]: 0 : if (length < PAGE_SIZE)
743 : 0 : buffer[length] = '\0';
744 [ # # ]: 0 : else if (buffer[PAGE_SIZE-1]) {
745 : : err = -EINVAL;
746 : : goto out;
747 : : }
748 : :
749 : 0 : scsi_dev_info_list_add_str(buffer);
750 : :
751 : : out:
752 : 0 : free_page((unsigned long)buffer);
753 : 0 : return err;
754 : : }
755 : :
756 : : static const struct file_operations scsi_devinfo_proc_fops = {
757 : : .owner = THIS_MODULE,
758 : : .open = proc_scsi_devinfo_open,
759 : : .read = seq_read,
760 : : .write = proc_scsi_devinfo_write,
761 : : .llseek = seq_lseek,
762 : : .release = seq_release,
763 : : };
764 : : #endif /* CONFIG_SCSI_PROC_FS */
765 : :
766 : : module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
767 : : MODULE_PARM_DESC(dev_flags,
768 : : "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
769 : : " list entries for vendor and model with an integer value of flags"
770 : : " to the scsi device info list");
771 : :
772 : : module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
773 : : MODULE_PARM_DESC(default_dev_flags,
774 : : "scsi default device flag integer value");
775 : :
776 : : /**
777 : : * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
778 : : **/
779 : 0 : void scsi_exit_devinfo(void)
780 : : {
781 : : #ifdef CONFIG_SCSI_PROC_FS
782 : 0 : remove_proc_entry("scsi/device_info", NULL);
783 : : #endif
784 : :
785 : 0 : scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
786 : 0 : }
787 : :
788 : : /**
789 : : * scsi_dev_info_add_list - add a new devinfo list
790 : : * @key: key of the list to add
791 : : * @name: Name of the list to add (for /proc/scsi/device_info)
792 : : *
793 : : * Adds the requested list, returns zero on success, -EEXIST if the
794 : : * key is already registered to a list, or other error on failure.
795 : : */
796 : 0 : int scsi_dev_info_add_list(int key, const char *name)
797 : : {
798 : : struct scsi_dev_info_list_table *devinfo_table =
799 : : scsi_devinfo_lookup_by_key(key);
800 : :
801 [ # # ]: 0 : if (!IS_ERR(devinfo_table))
802 : : /* list already exists */
803 : : return -EEXIST;
804 : :
805 : : devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
806 : :
807 [ # # ]: 0 : if (!devinfo_table)
808 : : return -ENOMEM;
809 : :
810 : 0 : INIT_LIST_HEAD(&devinfo_table->node);
811 : 0 : INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
812 : 0 : devinfo_table->name = name;
813 : 0 : devinfo_table->key = key;
814 : : list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
815 : :
816 : 0 : return 0;
817 : : }
818 : : EXPORT_SYMBOL(scsi_dev_info_add_list);
819 : :
820 : : /**
821 : : * scsi_dev_info_remove_list - destroy an added devinfo list
822 : : * @key: key of the list to destroy
823 : : *
824 : : * Iterates over the entire list first, freeing all the values, then
825 : : * frees the list itself. Returns 0 on success or -EINVAL if the key
826 : : * can't be found.
827 : : */
828 : 0 : int scsi_dev_info_remove_list(int key)
829 : : {
830 : : struct list_head *lh, *lh_next;
831 : : struct scsi_dev_info_list_table *devinfo_table =
832 : : scsi_devinfo_lookup_by_key(key);
833 : :
834 [ # # ]: 0 : if (IS_ERR(devinfo_table))
835 : : /* no such list */
836 : : return -EINVAL;
837 : :
838 : : /* remove from the master list */
839 : : list_del(&devinfo_table->node);
840 : :
841 [ # # ]: 0 : list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
842 : : struct scsi_dev_info_list *devinfo;
843 : :
844 : : devinfo = list_entry(lh, struct scsi_dev_info_list,
845 : : dev_info_list);
846 : 0 : kfree(devinfo);
847 : : }
848 : 0 : kfree(devinfo_table);
849 : :
850 : 0 : return 0;
851 : : }
852 : : EXPORT_SYMBOL(scsi_dev_info_remove_list);
853 : :
854 : : /**
855 : : * scsi_init_devinfo - set up the dynamic device list.
856 : : *
857 : : * Description:
858 : : * Add command line entries from scsi_dev_flags, then add
859 : : * scsi_static_device_list entries to the scsi device info list.
860 : : */
861 : 0 : int __init scsi_init_devinfo(void)
862 : : {
863 : : #ifdef CONFIG_SCSI_PROC_FS
864 : : struct proc_dir_entry *p;
865 : : #endif
866 : : int error, i;
867 : :
868 : 0 : error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
869 [ # # ]: 0 : if (error)
870 : : return error;
871 : :
872 : 0 : error = scsi_dev_info_list_add_str(scsi_dev_flags);
873 [ # # ]: 0 : if (error)
874 : : goto out;
875 : :
876 [ # # ]: 0 : for (i = 0; scsi_static_device_list[i].vendor; i++) {
877 : 0 : error = scsi_dev_info_list_add(1 /* compatibile */,
878 : : scsi_static_device_list[i].vendor,
879 : : scsi_static_device_list[i].model,
880 : : NULL,
881 : 0 : scsi_static_device_list[i].flags);
882 [ # # ]: 0 : if (error)
883 : : goto out;
884 : : }
885 : :
886 : : #ifdef CONFIG_SCSI_PROC_FS
887 : : p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
888 [ # # ]: 0 : if (!p) {
889 : : error = -ENOMEM;
890 : 0 : goto out;
891 : : }
892 : : #endif /* CONFIG_SCSI_PROC_FS */
893 : :
894 : : out:
895 [ # # ]: 0 : if (error)
896 : 0 : scsi_exit_devinfo();
897 : 0 : return error;
898 : : }
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