Branch data Line data Source code
1 : : // SPDX-License-Identifier: GPL-2.0
2 : :
3 : : #include <linux/blkdev.h>
4 : : #include <linux/init.h>
5 : : #include <linux/kernel.h>
6 : : #include <linux/module.h>
7 : : #include <linux/moduleparam.h>
8 : : #include <linux/proc_fs.h>
9 : : #include <linux/seq_file.h>
10 : : #include <linux/slab.h>
11 : :
12 : : #include <scsi/scsi_device.h>
13 : : #include <scsi/scsi_devinfo.h>
14 : :
15 : : #include "scsi_priv.h"
16 : :
17 : :
18 : : /*
19 : : * scsi_dev_info_list: structure to hold black/white listed devices.
20 : : */
21 : : struct scsi_dev_info_list {
22 : : struct list_head dev_info_list;
23 : : char vendor[8];
24 : : char model[16];
25 : : blist_flags_t flags;
26 : : unsigned compatible; /* for use with scsi_static_device_list entries */
27 : : };
28 : :
29 : : struct scsi_dev_info_list_table {
30 : : struct list_head node; /* our node for being on the master list */
31 : : struct list_head scsi_dev_info_list; /* head of dev info list */
32 : : const char *name; /* name of list for /proc (NULL for global) */
33 : : int key; /* unique numeric identifier */
34 : : };
35 : :
36 : :
37 : : static blist_flags_t 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 : : blist_flags_t 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", NULL, BLIST_NOLUN}, /* scanjet iip */
112 : : {"HP", "C2500A", NULL, 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 | BLIST_BORKEN},
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 : : {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES},
138 : : {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
139 : : {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
140 : : {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
141 : : {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
142 : : {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
143 : : {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
144 : : {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
145 : : {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
146 : : {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
147 : : {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
148 : : BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */
149 : : {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */
150 : : {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
151 : : {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
152 : : {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
153 : : {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
154 : : {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
155 : : {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
156 : : {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
157 : : {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
158 : : {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
159 : : {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
160 : : {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
161 : : {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, storage on LUN 0 */
162 : : {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */
163 : : {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
164 : : {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
165 : : BLIST_REPORTLUN2 | BLIST_RETRY_ITF},
166 : : {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
167 : : {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
168 : : {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
169 : : {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
170 : : {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
171 : : {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1},
172 : : {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
173 : : {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */
174 : : {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
175 : : {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
176 : : {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
177 : : {"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
178 : : {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES},
179 : : {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
180 : : {"HP", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, /* HP XP Arrays */
181 : : {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
182 : : {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
183 : : {"HP", "C1557A", NULL, BLIST_FORCELUN},
184 : : {"HP", "C3323-300", "4269", BLIST_NOTQ},
185 : : {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
186 : : {"HP", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
187 : : {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
188 : : {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
189 : : {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
190 : : {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
191 : : {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
192 : : {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
193 : : {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
194 : : {"INSITE", "I325VM", NULL, BLIST_KEY},
195 : : {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
196 : : {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
197 : : {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
198 : : {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
199 : : {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES},
200 : : {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
201 : : {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
202 : : {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
203 : : {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
204 : : {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
205 : : {"MICROP", "4110", NULL, BLIST_NOTQ},
206 : : {"MSFT", "Virtual HD", NULL, BLIST_MAX_1024 | BLIST_NO_RSOC},
207 : : {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
208 : : {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
209 : : {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
210 : : {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
211 : : {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
212 : : {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
213 : : {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
214 : : {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
215 : : {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
216 : : {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
217 : : {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
218 : : {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 : : {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
220 : : {"Promise", "", NULL, BLIST_SPARSELUN},
221 : : {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
222 : : {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
223 : : {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
224 : : {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
225 : : {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
226 : : {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
227 : : {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
228 : : {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
229 : : {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
230 : : {"SGI", "RAID3", "*", BLIST_SPARSELUN},
231 : : {"SGI", "RAID5", "*", BLIST_SPARSELUN},
232 : : {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
233 : : {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
234 : : {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
235 : : {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
236 : : {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
237 : : {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
238 : : {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
239 : : {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
240 : : {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
241 : : {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
242 : : {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES |
243 : : BLIST_INQUIRY_36},
244 : : {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
245 : : {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
246 : : {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
247 : : {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
248 : : {"SUN", "T300", "*", BLIST_SPARSELUN},
249 : : {"SUN", "T4", "*", BLIST_SPARSELUN},
250 : : {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
251 : : {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
252 : : {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
253 : : {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
254 : : {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
255 : : {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
256 : : {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
257 : : {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
258 : : {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
259 : : {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
260 : : {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
261 : : {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
262 : : { NULL, NULL, NULL, 0 },
263 : : };
264 : :
265 : 5208 : static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
266 : : {
267 : 5208 : struct scsi_dev_info_list_table *devinfo_table;
268 : 5208 : int found = 0;
269 : :
270 [ - - + + : 5292 : list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
+ - + - ]
271 [ - - + - : 5236 : if (devinfo_table->key == key) {
- + + + ]
272 : : found = 1;
273 : : break;
274 : : }
275 [ - - + - : 5208 : if (!found)
- + - + ]
276 : 56 : return ERR_PTR(-EINVAL);
277 : :
278 : : return devinfo_table;
279 : : }
280 : :
281 : : /*
282 : : * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
283 : : * devinfo vendor and model strings.
284 : : */
285 : 10024 : static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
286 : : char *from, int compatible)
287 : : {
288 : 10024 : size_t from_length;
289 : :
290 : 10024 : from_length = strlen(from);
291 : : /* This zero-pads the destination */
292 : 10024 : strncpy(to, from, to_length);
293 [ - + ]: 10024 : if (from_length < to_length && !compatible) {
294 : : /*
295 : : * space pad the string if it is short.
296 : : */
297 : 0 : memset(&to[from_length], ' ', to_length - from_length);
298 : : }
299 [ - + ]: 10024 : if (from_length > to_length)
300 : 0 : printk(KERN_WARNING "%s: %s string '%s' is too long\n",
301 : : __func__, name, from);
302 : 10024 : }
303 : :
304 : : /**
305 : : * scsi_dev_info_list_add - add one dev_info list entry.
306 : : * @compatible: if true, null terminate short strings. Otherwise space pad.
307 : : * @vendor: vendor string
308 : : * @model: model (product) string
309 : : * @strflags: integer string
310 : : * @flags: if strflags NULL, use this flag value
311 : : *
312 : : * Description:
313 : : * Create and add one dev_info entry for @vendor, @model, @strflags or
314 : : * @flag. If @compatible, add to the tail of the list, do not space
315 : : * pad, and set devinfo->compatible. The scsi_static_device_list entries
316 : : * are added with @compatible 1 and @clfags NULL.
317 : : *
318 : : * Returns: 0 OK, -error on failure.
319 : : **/
320 : 4956 : static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
321 : : char *strflags, blist_flags_t flags)
322 : : {
323 : 4956 : return scsi_dev_info_list_add_keyed(compatible, vendor, model,
324 : : strflags, flags,
325 : : SCSI_DEVINFO_GLOBAL);
326 : : }
327 : :
328 : : /**
329 : : * scsi_dev_info_list_add_keyed - add one dev_info list entry.
330 : : * @compatible: if true, null terminate short strings. Otherwise space pad.
331 : : * @vendor: vendor string
332 : : * @model: model (product) string
333 : : * @strflags: integer string
334 : : * @flags: if strflags NULL, use this flag value
335 : : * @key: specify list to use
336 : : *
337 : : * Description:
338 : : * Create and add one dev_info entry for @vendor, @model,
339 : : * @strflags or @flag in list specified by @key. If @compatible,
340 : : * add to the tail of the list, do not space pad, and set
341 : : * devinfo->compatible. The scsi_static_device_list entries are
342 : : * added with @compatible 1 and @clfags NULL.
343 : : *
344 : : * Returns: 0 OK, -error on failure.
345 : : **/
346 : 5012 : int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
347 : : char *strflags, blist_flags_t flags,
348 : : enum scsi_devinfo_key key)
349 : : {
350 : 5012 : struct scsi_dev_info_list *devinfo;
351 : 5012 : struct scsi_dev_info_list_table *devinfo_table =
352 : 5012 : scsi_devinfo_lookup_by_key(key);
353 : :
354 [ - + ]: 5012 : if (IS_ERR(devinfo_table))
355 : 0 : return PTR_ERR(devinfo_table);
356 : :
357 : 5012 : devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
358 [ - + ]: 5012 : if (!devinfo) {
359 : 0 : printk(KERN_ERR "%s: no memory\n", __func__);
360 : 0 : return -ENOMEM;
361 : : }
362 : :
363 : 5012 : scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
364 : : vendor, compatible);
365 : 5012 : scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
366 : : model, compatible);
367 : :
368 [ - + ]: 5012 : if (strflags) {
369 : 0 : unsigned long long val;
370 : 0 : int ret = kstrtoull(strflags, 0, &val);
371 : :
372 [ # # ]: 0 : if (ret != 0) {
373 : 0 : kfree(devinfo);
374 : 0 : return ret;
375 : : }
376 : 0 : flags = (__force blist_flags_t)val;
377 : : }
378 [ - + ]: 5012 : if (flags & __BLIST_UNUSED_MASK) {
379 : 0 : pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx",
380 : : vendor, model, flags & __BLIST_UNUSED_MASK);
381 : 0 : kfree(devinfo);
382 : 0 : return -EINVAL;
383 : : }
384 : 5012 : devinfo->flags = flags;
385 : 5012 : devinfo->compatible = compatible;
386 : :
387 [ + - ]: 5012 : if (compatible)
388 : 5012 : list_add_tail(&devinfo->dev_info_list,
389 : : &devinfo_table->scsi_dev_info_list);
390 : : else
391 : 0 : list_add(&devinfo->dev_info_list,
392 : : &devinfo_table->scsi_dev_info_list);
393 : :
394 : : return 0;
395 : : }
396 : : EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
397 : :
398 : : /**
399 : : * scsi_dev_info_list_find - find a matching dev_info list entry.
400 : : * @vendor: full vendor string
401 : : * @model: full model (product) string
402 : : * @key: specify list to use
403 : : *
404 : : * Description:
405 : : * Finds the first dev_info entry matching @vendor, @model
406 : : * in list specified by @key.
407 : : *
408 : : * Returns: pointer to matching entry, or ERR_PTR on failure.
409 : : **/
410 : 140 : static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
411 : : const char *model, enum scsi_devinfo_key key)
412 : : {
413 : 140 : struct scsi_dev_info_list *devinfo;
414 : 140 : struct scsi_dev_info_list_table *devinfo_table =
415 : 140 : scsi_devinfo_lookup_by_key(key);
416 : 140 : size_t vmax, mmax, mlen;
417 : 140 : const char *vskip, *mskip;
418 : :
419 [ + - ]: 140 : if (IS_ERR(devinfo_table))
420 : : return (struct scsi_dev_info_list *) devinfo_table;
421 : :
422 : : /* Prepare for "compatible" matches */
423 : :
424 : : /*
425 : : * XXX why skip leading spaces? If an odd INQUIRY
426 : : * value, that should have been part of the
427 : : * scsi_static_device_list[] entry, such as " FOO"
428 : : * rather than "FOO". Since this code is already
429 : : * here, and we don't know what device it is
430 : : * trying to work with, leave it as-is.
431 : : */
432 : : vmax = sizeof(devinfo->vendor);
433 : : vskip = vendor;
434 [ + - - + ]: 140 : while (vmax > 0 && *vskip == ' ') {
435 : 0 : vmax--;
436 : 0 : vskip++;
437 : : }
438 : : /* Also skip trailing spaces */
439 [ - + + + ]: 812 : while (vmax > 0 && vskip[vmax - 1] == ' ')
440 : : --vmax;
441 : :
442 : : mmax = sizeof(devinfo->model);
443 : : mskip = model;
444 [ + - - + ]: 140 : while (mmax > 0 && *mskip == ' ') {
445 : 0 : mmax--;
446 : 0 : mskip++;
447 : : }
448 [ + - + + ]: 588 : while (mmax > 0 && mskip[mmax - 1] == ' ')
449 : : --mmax;
450 : :
451 [ + + ]: 24920 : list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
452 : : dev_info_list) {
453 [ + - ]: 24780 : if (devinfo->compatible) {
454 : : /*
455 : : * vendor strings must be an exact match
456 : : */
457 [ + + ]: 24780 : if (vmax != strnlen(devinfo->vendor,
458 : 4200 : sizeof(devinfo->vendor)) ||
459 [ + + ]: 4200 : memcmp(devinfo->vendor, vskip, vmax))
460 : 24752 : continue;
461 : :
462 : : /*
463 : : * @model specifies the full string, and
464 : : * must be larger or equal to devinfo->model
465 : : */
466 : 28 : mlen = strnlen(devinfo->model, sizeof(devinfo->model));
467 [ + - + - ]: 28 : if (mmax < mlen || memcmp(devinfo->model, mskip, mlen))
468 : 28 : continue;
469 : 0 : return devinfo;
470 : : } else {
471 [ # # ]: 0 : if (!memcmp(devinfo->vendor, vendor,
472 : 0 : sizeof(devinfo->vendor)) &&
473 [ # # ]: 0 : !memcmp(devinfo->model, model,
474 : : sizeof(devinfo->model)))
475 : 0 : return devinfo;
476 : : }
477 : : }
478 : :
479 : : return ERR_PTR(-ENOENT);
480 : : }
481 : :
482 : : /**
483 : : * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
484 : : * @vendor: vendor string
485 : : * @model: model (product) string
486 : : * @key: specify list to use
487 : : *
488 : : * Description:
489 : : * Remove and destroy one dev_info entry for @vendor, @model
490 : : * in list specified by @key.
491 : : *
492 : : * Returns: 0 OK, -error on failure.
493 : : **/
494 : 0 : int scsi_dev_info_list_del_keyed(char *vendor, char *model,
495 : : enum scsi_devinfo_key key)
496 : : {
497 : 0 : struct scsi_dev_info_list *found;
498 : :
499 : 0 : found = scsi_dev_info_list_find(vendor, model, key);
500 [ # # ]: 0 : if (IS_ERR(found))
501 : 0 : return PTR_ERR(found);
502 : :
503 : 0 : list_del(&found->dev_info_list);
504 : 0 : kfree(found);
505 : 0 : return 0;
506 : : }
507 : : EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
508 : :
509 : : /**
510 : : * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
511 : : * @dev_list: string of device flags to add
512 : : *
513 : : * Description:
514 : : * Parse dev_list, and add entries to the scsi_dev_info_list.
515 : : * dev_list is of the form "vendor:product:flag,vendor:product:flag".
516 : : * dev_list is modified via strsep. Can be called for command line
517 : : * addition, for proc or mabye a sysfs interface.
518 : : *
519 : : * Returns: 0 if OK, -error on failure.
520 : : **/
521 : 28 : static int scsi_dev_info_list_add_str(char *dev_list)
522 : : {
523 : 28 : char *vendor, *model, *strflags, *next;
524 : 28 : char *next_check;
525 : 28 : int res = 0;
526 : :
527 : 28 : next = dev_list;
528 [ + - - + ]: 28 : if (next && next[0] == '"') {
529 : : /*
530 : : * Ignore both the leading and trailing quote.
531 : : */
532 : 0 : next++;
533 : 0 : next_check = ",\"";
534 : : } else {
535 : : next_check = ",";
536 : : }
537 : :
538 : : /*
539 : : * For the leading and trailing '"' case, the for loop comes
540 : : * through the last time with vendor[0] == '\0'.
541 : : */
542 [ + - - + ]: 28 : for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
543 [ # # ]: 0 : && (res == 0); vendor = strsep(&next, ":")) {
544 : 0 : strflags = NULL;
545 : 0 : model = strsep(&next, ":");
546 [ # # ]: 0 : if (model)
547 : 0 : strflags = strsep(&next, next_check);
548 [ # # ]: 0 : if (!model || !strflags) {
549 : 0 : printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
550 : : " '%s'\n", __func__, vendor, model,
551 : : strflags);
552 : 0 : res = -EINVAL;
553 : : } else
554 : 0 : res = scsi_dev_info_list_add(0 /* compatible */, vendor,
555 : : model, strflags, 0);
556 : : }
557 : 28 : return res;
558 : : }
559 : :
560 : : /**
561 : : * get_device_flags - get device specific flags from the dynamic device list.
562 : : * @sdev: &scsi_device to get flags for
563 : : * @vendor: vendor name
564 : : * @model: model name
565 : : *
566 : : * Description:
567 : : * Search the global scsi_dev_info_list (specified by list zero)
568 : : * for an entry matching @vendor and @model, if found, return the
569 : : * matching flags value, else return the host or global default
570 : : * settings. Called during scan time.
571 : : **/
572 : 140 : blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
573 : : const unsigned char *vendor,
574 : : const unsigned char *model)
575 : : {
576 : 280 : return scsi_get_device_flags_keyed(sdev, vendor, model,
577 : : SCSI_DEVINFO_GLOBAL);
578 : : }
579 : :
580 : :
581 : : /**
582 : : * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
583 : : * @sdev: &scsi_device to get flags for
584 : : * @vendor: vendor name
585 : : * @model: model name
586 : : * @key: list to look up
587 : : *
588 : : * Description:
589 : : * Search the scsi_dev_info_list specified by @key for an entry
590 : : * matching @vendor and @model, if found, return the matching
591 : : * flags value, else return the host or global default settings.
592 : : * Called during scan time.
593 : : **/
594 : 140 : blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
595 : : const unsigned char *vendor,
596 : : const unsigned char *model,
597 : : enum scsi_devinfo_key key)
598 : : {
599 : 140 : struct scsi_dev_info_list *devinfo;
600 : :
601 : 140 : devinfo = scsi_dev_info_list_find(vendor, model, key);
602 [ - - - + ]: 140 : if (!IS_ERR(devinfo))
603 : 0 : return devinfo->flags;
604 : :
605 : : /* key or device not found: return nothing */
606 [ # # ]: 0 : if (key != SCSI_DEVINFO_GLOBAL)
607 : : return 0;
608 : :
609 : : /* except for the global list, where we have an exception */
610 [ - - + - ]: 140 : if (sdev->sdev_bflags)
611 : : return sdev->sdev_bflags;
612 : :
613 : 140 : return scsi_default_dev_flags;
614 : : }
615 : : EXPORT_SYMBOL(scsi_get_device_flags_keyed);
616 : :
617 : : #ifdef CONFIG_SCSI_PROC_FS
618 : : struct double_list {
619 : : struct list_head *top;
620 : : struct list_head *bottom;
621 : : };
622 : :
623 : 0 : static int devinfo_seq_show(struct seq_file *m, void *v)
624 : : {
625 : 0 : struct double_list *dl = v;
626 : 0 : struct scsi_dev_info_list_table *devinfo_table =
627 : 0 : list_entry(dl->top, struct scsi_dev_info_list_table, node);
628 : 0 : struct scsi_dev_info_list *devinfo =
629 : 0 : list_entry(dl->bottom, struct scsi_dev_info_list,
630 : : dev_info_list);
631 : :
632 [ # # ]: 0 : if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
633 [ # # ]: 0 : devinfo_table->name)
634 : 0 : seq_printf(m, "[%s]:\n", devinfo_table->name);
635 : :
636 : 0 : seq_printf(m, "'%.8s' '%.16s' 0x%llx\n",
637 : 0 : devinfo->vendor, devinfo->model, devinfo->flags);
638 : 0 : return 0;
639 : : }
640 : :
641 : 0 : static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
642 : : {
643 : 0 : struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
644 : 0 : loff_t pos = *ppos;
645 : :
646 [ # # ]: 0 : if (!dl)
647 : : return NULL;
648 : :
649 [ # # ]: 0 : list_for_each(dl->top, &scsi_dev_info_list) {
650 : 0 : struct scsi_dev_info_list_table *devinfo_table =
651 : 0 : list_entry(dl->top, struct scsi_dev_info_list_table,
652 : : node);
653 [ # # ]: 0 : list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
654 [ # # ]: 0 : if (pos-- == 0)
655 : : return dl;
656 : : }
657 : :
658 : 0 : kfree(dl);
659 : 0 : return NULL;
660 : : }
661 : :
662 : 0 : static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
663 : : {
664 : 0 : struct double_list *dl = v;
665 : 0 : struct scsi_dev_info_list_table *devinfo_table =
666 : 0 : list_entry(dl->top, struct scsi_dev_info_list_table, node);
667 : :
668 : 0 : ++*ppos;
669 : 0 : dl->bottom = dl->bottom->next;
670 [ # # ]: 0 : while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
671 : 0 : dl->top = dl->top->next;
672 [ # # ]: 0 : if (dl->top == &scsi_dev_info_list) {
673 : 0 : kfree(dl);
674 : 0 : return NULL;
675 : : }
676 : 0 : devinfo_table = list_entry(dl->top,
677 : : struct scsi_dev_info_list_table,
678 : : node);
679 : 0 : dl->bottom = devinfo_table->scsi_dev_info_list.next;
680 : : }
681 : :
682 : : return dl;
683 : : }
684 : :
685 : 0 : static void devinfo_seq_stop(struct seq_file *m, void *v)
686 : : {
687 : 0 : kfree(v);
688 : 0 : }
689 : :
690 : : static const struct seq_operations scsi_devinfo_seq_ops = {
691 : : .start = devinfo_seq_start,
692 : : .next = devinfo_seq_next,
693 : : .stop = devinfo_seq_stop,
694 : : .show = devinfo_seq_show,
695 : : };
696 : :
697 : 0 : static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
698 : : {
699 : 0 : return seq_open(file, &scsi_devinfo_seq_ops);
700 : : }
701 : :
702 : : /*
703 : : * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
704 : : *
705 : : * Description: Adds a black/white list entry for vendor and model with an
706 : : * integer value of flag to the scsi device info list.
707 : : * To use, echo "vendor:model:flag" > /proc/scsi/device_info
708 : : */
709 : 0 : static ssize_t proc_scsi_devinfo_write(struct file *file,
710 : : const char __user *buf,
711 : : size_t length, loff_t *ppos)
712 : : {
713 : 0 : char *buffer;
714 : 0 : ssize_t err = length;
715 : :
716 [ # # ]: 0 : if (!buf || length>PAGE_SIZE)
717 : : return -EINVAL;
718 [ # # ]: 0 : if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
719 : : return -ENOMEM;
720 [ # # # # ]: 0 : if (copy_from_user(buffer, buf, length)) {
721 : 0 : err =-EFAULT;
722 : 0 : goto out;
723 : : }
724 : :
725 [ # # ]: 0 : if (length < PAGE_SIZE)
726 : 0 : buffer[length] = '\0';
727 [ # # ]: 0 : else if (buffer[PAGE_SIZE-1]) {
728 : 0 : err = -EINVAL;
729 : 0 : goto out;
730 : : }
731 : :
732 : 0 : scsi_dev_info_list_add_str(buffer);
733 : :
734 : 0 : out:
735 : 0 : free_page((unsigned long)buffer);
736 : 0 : return err;
737 : : }
738 : :
739 : : static const struct proc_ops scsi_devinfo_proc_ops = {
740 : : .proc_open = proc_scsi_devinfo_open,
741 : : .proc_read = seq_read,
742 : : .proc_write = proc_scsi_devinfo_write,
743 : : .proc_lseek = seq_lseek,
744 : : .proc_release = seq_release,
745 : : };
746 : : #endif /* CONFIG_SCSI_PROC_FS */
747 : :
748 : : module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
749 : : MODULE_PARM_DESC(dev_flags,
750 : : "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
751 : : " list entries for vendor and model with an integer value of flags"
752 : : " to the scsi device info list");
753 : :
754 : : module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644);
755 : : MODULE_PARM_DESC(default_dev_flags,
756 : : "scsi default device flag uint64_t value");
757 : :
758 : : /**
759 : : * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
760 : : **/
761 : 0 : void scsi_exit_devinfo(void)
762 : : {
763 : : #ifdef CONFIG_SCSI_PROC_FS
764 : 0 : remove_proc_entry("scsi/device_info", NULL);
765 : : #endif
766 : :
767 : 0 : scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
768 : 0 : }
769 : :
770 : : /**
771 : : * scsi_dev_info_add_list - add a new devinfo list
772 : : * @key: key of the list to add
773 : : * @name: Name of the list to add (for /proc/scsi/device_info)
774 : : *
775 : : * Adds the requested list, returns zero on success, -EEXIST if the
776 : : * key is already registered to a list, or other error on failure.
777 : : */
778 : 56 : int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name)
779 : : {
780 : 56 : struct scsi_dev_info_list_table *devinfo_table =
781 : 56 : scsi_devinfo_lookup_by_key(key);
782 : :
783 [ + - ]: 56 : if (!IS_ERR(devinfo_table))
784 : : /* list already exists */
785 : : return -EEXIST;
786 : :
787 : 56 : devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
788 : :
789 [ + - ]: 56 : if (!devinfo_table)
790 : : return -ENOMEM;
791 : :
792 : 56 : INIT_LIST_HEAD(&devinfo_table->node);
793 : 56 : INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
794 : 56 : devinfo_table->name = name;
795 : 56 : devinfo_table->key = key;
796 : 56 : list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
797 : :
798 : 56 : return 0;
799 : : }
800 : : EXPORT_SYMBOL(scsi_dev_info_add_list);
801 : :
802 : : /**
803 : : * scsi_dev_info_remove_list - destroy an added devinfo list
804 : : * @key: key of the list to destroy
805 : : *
806 : : * Iterates over the entire list first, freeing all the values, then
807 : : * frees the list itself. Returns 0 on success or -EINVAL if the key
808 : : * can't be found.
809 : : */
810 : 0 : int scsi_dev_info_remove_list(enum scsi_devinfo_key key)
811 : : {
812 : 0 : struct list_head *lh, *lh_next;
813 : 0 : struct scsi_dev_info_list_table *devinfo_table =
814 : 0 : scsi_devinfo_lookup_by_key(key);
815 : :
816 [ # # ]: 0 : if (IS_ERR(devinfo_table))
817 : : /* no such list */
818 : : return -EINVAL;
819 : :
820 : : /* remove from the master list */
821 : 0 : list_del(&devinfo_table->node);
822 : :
823 [ # # ]: 0 : list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
824 : 0 : struct scsi_dev_info_list *devinfo;
825 : :
826 : 0 : devinfo = list_entry(lh, struct scsi_dev_info_list,
827 : : dev_info_list);
828 : 0 : kfree(devinfo);
829 : : }
830 : 0 : kfree(devinfo_table);
831 : :
832 : 0 : return 0;
833 : : }
834 : : EXPORT_SYMBOL(scsi_dev_info_remove_list);
835 : :
836 : : /**
837 : : * scsi_init_devinfo - set up the dynamic device list.
838 : : *
839 : : * Description:
840 : : * Add command line entries from scsi_dev_flags, then add
841 : : * scsi_static_device_list entries to the scsi device info list.
842 : : */
843 : 28 : int __init scsi_init_devinfo(void)
844 : : {
845 : : #ifdef CONFIG_SCSI_PROC_FS
846 : 28 : struct proc_dir_entry *p;
847 : : #endif
848 : 28 : int error, i;
849 : :
850 : 28 : error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
851 [ + - ]: 28 : if (error)
852 : : return error;
853 : :
854 : 28 : error = scsi_dev_info_list_add_str(scsi_dev_flags);
855 [ - + ]: 28 : if (error)
856 : 0 : goto out;
857 : :
858 [ + + ]: 4984 : for (i = 0; scsi_static_device_list[i].vendor; i++) {
859 : 4956 : error = scsi_dev_info_list_add(1 /* compatibile */,
860 : : scsi_static_device_list[i].vendor,
861 : : scsi_static_device_list[i].model,
862 : : NULL,
863 : : scsi_static_device_list[i].flags);
864 [ - + ]: 4956 : if (error)
865 : 0 : goto out;
866 : : }
867 : :
868 : : #ifdef CONFIG_SCSI_PROC_FS
869 : 28 : p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_ops);
870 [ - + ]: 28 : if (!p) {
871 : 0 : error = -ENOMEM;
872 : 0 : goto out;
873 : : }
874 : : #endif /* CONFIG_SCSI_PROC_FS */
875 : :
876 : 28 : out:
877 [ - + ]: 28 : if (error)
878 : 0 : scsi_exit_devinfo();
879 : : return error;
880 : : }
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