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 : : {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
243 : : {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES |
244 : : BLIST_INQUIRY_36},
245 : : {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
246 : : {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
247 : : {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
248 : : {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
249 : : {"SUN", "T300", "*", BLIST_SPARSELUN},
250 : : {"SUN", "T4", "*", BLIST_SPARSELUN},
251 : : {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
252 : : {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
253 : : {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
254 : : {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
255 : : {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
256 : : {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
257 : : {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
258 : : {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
259 : : {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
260 : : {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
261 : : {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
262 : : {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
263 : : { NULL, NULL, NULL, 0 },
264 : : };
265 : :
266 : : static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
267 : : {
268 : : struct scsi_dev_info_list_table *devinfo_table;
269 : : int found = 0;
270 : :
271 [ # # - + : 37053 : list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
# # + - ]
272 [ # # # # : 36846 : if (devinfo_table->key == key) {
# # - + ]
273 : : found = 1;
274 : : break;
275 : : }
276 [ # # - + : 37053 : if (!found)
# # + - ]
277 : : return ERR_PTR(-EINVAL);
278 : :
279 : 36846 : return devinfo_table;
280 : : }
281 : :
282 : : /*
283 : : * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
284 : : * devinfo vendor and model strings.
285 : : */
286 : 73692 : static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
287 : : char *from, int compatible)
288 : : {
289 : : size_t from_length;
290 : :
291 : 73692 : from_length = strlen(from);
292 : : /* This zero-pads the destination */
293 : 73692 : strncpy(to, from, to_length);
294 [ - + ]: 73692 : if (from_length < to_length && !compatible) {
295 : : /*
296 : : * space pad the string if it is short.
297 : : */
298 : 0 : memset(&to[from_length], ' ', to_length - from_length);
299 : : }
300 [ - + ]: 73692 : if (from_length > to_length)
301 : 0 : printk(KERN_WARNING "%s: %s string '%s' is too long\n",
302 : : __func__, name, from);
303 : 73692 : }
304 : :
305 : : /**
306 : : * scsi_dev_info_list_add - add one dev_info list entry.
307 : : * @compatible: if true, null terminate short strings. Otherwise space pad.
308 : : * @vendor: vendor string
309 : : * @model: model (product) string
310 : : * @strflags: integer string
311 : : * @flags: if strflags NULL, use this flag value
312 : : *
313 : : * Description:
314 : : * Create and add one dev_info entry for @vendor, @model, @strflags or
315 : : * @flag. If @compatible, add to the tail of the list, do not space
316 : : * pad, and set devinfo->compatible. The scsi_static_device_list entries
317 : : * are added with @compatible 1 and @clfags NULL.
318 : : *
319 : : * Returns: 0 OK, -error on failure.
320 : : **/
321 : : static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
322 : : char *strflags, blist_flags_t flags)
323 : : {
324 : 36846 : return scsi_dev_info_list_add_keyed(compatible, vendor, model,
325 : : strflags, flags,
326 : : SCSI_DEVINFO_GLOBAL);
327 : : }
328 : :
329 : : /**
330 : : * scsi_dev_info_list_add_keyed - add one dev_info list entry.
331 : : * @compatible: if true, null terminate short strings. Otherwise space pad.
332 : : * @vendor: vendor string
333 : : * @model: model (product) string
334 : : * @strflags: integer string
335 : : * @flags: if strflags NULL, use this flag value
336 : : * @key: specify list to use
337 : : *
338 : : * Description:
339 : : * Create and add one dev_info entry for @vendor, @model,
340 : : * @strflags or @flag in list specified by @key. If @compatible,
341 : : * add to the tail of the list, do not space pad, and set
342 : : * devinfo->compatible. The scsi_static_device_list entries are
343 : : * added with @compatible 1 and @clfags NULL.
344 : : *
345 : : * Returns: 0 OK, -error on failure.
346 : : **/
347 : 36846 : int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
348 : : char *strflags, blist_flags_t flags,
349 : : enum scsi_devinfo_key key)
350 : : {
351 : : struct scsi_dev_info_list *devinfo;
352 : : struct scsi_dev_info_list_table *devinfo_table =
353 : 36846 : scsi_devinfo_lookup_by_key(key);
354 : :
355 [ - + ]: 36846 : if (IS_ERR(devinfo_table))
356 : 0 : return PTR_ERR(devinfo_table);
357 : :
358 : : devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
359 [ - + ]: 36846 : if (!devinfo) {
360 : 0 : printk(KERN_ERR "%s: no memory\n", __func__);
361 : 0 : return -ENOMEM;
362 : : }
363 : :
364 : 36846 : scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
365 : : vendor, compatible);
366 : 36846 : scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
367 : : model, compatible);
368 : :
369 [ - + ]: 36846 : if (strflags) {
370 : : unsigned long long val;
371 : 0 : int ret = kstrtoull(strflags, 0, &val);
372 : :
373 [ # # ]: 0 : if (ret != 0) {
374 : 0 : kfree(devinfo);
375 : 0 : return ret;
376 : : }
377 : 0 : flags = (__force blist_flags_t)val;
378 : : }
379 [ - + ]: 36846 : if (flags & __BLIST_UNUSED_MASK) {
380 : 0 : pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx",
381 : : vendor, model, flags & __BLIST_UNUSED_MASK);
382 : 0 : kfree(devinfo);
383 : 0 : return -EINVAL;
384 : : }
385 : 36846 : devinfo->flags = flags;
386 : 36846 : devinfo->compatible = compatible;
387 : :
388 [ + - ]: 36846 : if (compatible)
389 : 36846 : list_add_tail(&devinfo->dev_info_list,
390 : : &devinfo_table->scsi_dev_info_list);
391 : : else
392 : 0 : list_add(&devinfo->dev_info_list,
393 : : &devinfo_table->scsi_dev_info_list);
394 : :
395 : : return 0;
396 : : }
397 : : EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
398 : :
399 : : /**
400 : : * scsi_dev_info_list_find - find a matching dev_info list entry.
401 : : * @vendor: full vendor string
402 : : * @model: full model (product) string
403 : : * @key: specify list to use
404 : : *
405 : : * Description:
406 : : * Finds the first dev_info entry matching @vendor, @model
407 : : * in list specified by @key.
408 : : *
409 : : * Returns: pointer to matching entry, or ERR_PTR on failure.
410 : : **/
411 : 0 : static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
412 : : const char *model, enum scsi_devinfo_key key)
413 : : {
414 : : struct scsi_dev_info_list *devinfo;
415 : : struct scsi_dev_info_list_table *devinfo_table =
416 : 0 : scsi_devinfo_lookup_by_key(key);
417 : : size_t vmax, mmax, mlen;
418 : : const char *vskip, *mskip;
419 : :
420 [ # # ]: 0 : if (IS_ERR(devinfo_table))
421 : : return (struct scsi_dev_info_list *) devinfo_table;
422 : :
423 : : /* Prepare for "compatible" matches */
424 : :
425 : : /*
426 : : * XXX why skip leading spaces? If an odd INQUIRY
427 : : * value, that should have been part of the
428 : : * scsi_static_device_list[] entry, such as " FOO"
429 : : * rather than "FOO". Since this code is already
430 : : * here, and we don't know what device it is
431 : : * trying to work with, leave it as-is.
432 : : */
433 : : vmax = sizeof(devinfo->vendor);
434 : : vskip = vendor;
435 [ # # # # ]: 0 : while (vmax > 0 && *vskip == ' ') {
436 : 0 : vmax--;
437 : 0 : vskip++;
438 : : }
439 : : /* Also skip trailing spaces */
440 [ # # # # ]: 0 : while (vmax > 0 && vskip[vmax - 1] == ' ')
441 : : --vmax;
442 : :
443 : : mmax = sizeof(devinfo->model);
444 : : mskip = model;
445 [ # # # # ]: 0 : while (mmax > 0 && *mskip == ' ') {
446 : 0 : mmax--;
447 : 0 : mskip++;
448 : : }
449 [ # # # # ]: 0 : while (mmax > 0 && mskip[mmax - 1] == ' ')
450 : : --mmax;
451 : :
452 [ # # ]: 0 : list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
453 : : dev_info_list) {
454 [ # # ]: 0 : if (devinfo->compatible) {
455 : : /*
456 : : * vendor strings must be an exact match
457 : : */
458 [ # # ]: 0 : if (vmax != strnlen(devinfo->vendor,
459 [ # # ]: 0 : sizeof(devinfo->vendor)) ||
460 : 0 : memcmp(devinfo->vendor, vskip, vmax))
461 : 0 : continue;
462 : :
463 : : /*
464 : : * @model specifies the full string, and
465 : : * must be larger or equal to devinfo->model
466 : : */
467 : 0 : mlen = strnlen(devinfo->model, sizeof(devinfo->model));
468 [ # # # # ]: 0 : if (mmax < mlen || memcmp(devinfo->model, mskip, mlen))
469 : 0 : continue;
470 : 0 : return devinfo;
471 : : } else {
472 [ # # ]: 0 : if (!memcmp(devinfo->vendor, vendor,
473 [ # # ]: 0 : sizeof(devinfo->vendor)) &&
474 : 0 : !memcmp(devinfo->model, model,
475 : : sizeof(devinfo->model)))
476 : 0 : return devinfo;
477 : : }
478 : : }
479 : :
480 : : return ERR_PTR(-ENOENT);
481 : : }
482 : :
483 : : /**
484 : : * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
485 : : * @vendor: vendor string
486 : : * @model: model (product) string
487 : : * @key: specify list to use
488 : : *
489 : : * Description:
490 : : * Remove and destroy one dev_info entry for @vendor, @model
491 : : * in list specified by @key.
492 : : *
493 : : * Returns: 0 OK, -error on failure.
494 : : **/
495 : 0 : int scsi_dev_info_list_del_keyed(char *vendor, char *model,
496 : : enum scsi_devinfo_key key)
497 : : {
498 : : struct scsi_dev_info_list *found;
499 : :
500 : 0 : found = scsi_dev_info_list_find(vendor, model, key);
501 [ # # ]: 0 : if (IS_ERR(found))
502 : 0 : return PTR_ERR(found);
503 : :
504 : : list_del(&found->dev_info_list);
505 : 0 : kfree(found);
506 : 0 : return 0;
507 : : }
508 : : EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
509 : :
510 : : /**
511 : : * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
512 : : * @dev_list: string of device flags to add
513 : : *
514 : : * Description:
515 : : * Parse dev_list, and add entries to the scsi_dev_info_list.
516 : : * dev_list is of the form "vendor:product:flag,vendor:product:flag".
517 : : * dev_list is modified via strsep. Can be called for command line
518 : : * addition, for proc or mabye a sysfs interface.
519 : : *
520 : : * Returns: 0 if OK, -error on failure.
521 : : **/
522 : 207 : static int scsi_dev_info_list_add_str(char *dev_list)
523 : : {
524 : : char *vendor, *model, *strflags, *next;
525 : : char *next_check;
526 : : int res = 0;
527 : :
528 : 207 : next = dev_list;
529 [ + - - + ]: 207 : if (next && next[0] == '"') {
530 : : /*
531 : : * Ignore both the leading and trailing quote.
532 : : */
533 : 0 : next++;
534 : 0 : next_check = ",\"";
535 : : } else {
536 : : next_check = ",";
537 : : }
538 : :
539 : : /*
540 : : * For the leading and trailing '"' case, the for loop comes
541 : : * through the last time with vendor[0] == '\0'.
542 : : */
543 [ + - - + ]: 414 : for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
544 [ # # ]: 0 : && (res == 0); vendor = strsep(&next, ":")) {
545 : : strflags = NULL;
546 : 0 : model = strsep(&next, ":");
547 [ # # ]: 0 : if (model)
548 : 0 : strflags = strsep(&next, next_check);
549 [ # # ]: 0 : if (!model || !strflags) {
550 : 0 : printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
551 : : " '%s'\n", __func__, vendor, model,
552 : : strflags);
553 : : res = -EINVAL;
554 : : } else
555 : : res = scsi_dev_info_list_add(0 /* compatible */, vendor,
556 : : model, strflags, 0);
557 : : }
558 : 207 : return res;
559 : : }
560 : :
561 : : /**
562 : : * get_device_flags - get device specific flags from the dynamic device list.
563 : : * @sdev: &scsi_device to get flags for
564 : : * @vendor: vendor name
565 : : * @model: model name
566 : : *
567 : : * Description:
568 : : * Search the global scsi_dev_info_list (specified by list zero)
569 : : * for an entry matching @vendor and @model, if found, return the
570 : : * matching flags value, else return the host or global default
571 : : * settings. Called during scan time.
572 : : **/
573 : 0 : blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
574 : : const unsigned char *vendor,
575 : : const unsigned char *model)
576 : : {
577 : 0 : return scsi_get_device_flags_keyed(sdev, vendor, model,
578 : : SCSI_DEVINFO_GLOBAL);
579 : : }
580 : :
581 : :
582 : : /**
583 : : * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
584 : : * @sdev: &scsi_device to get flags for
585 : : * @vendor: vendor name
586 : : * @model: model name
587 : : * @key: list to look up
588 : : *
589 : : * Description:
590 : : * Search the scsi_dev_info_list specified by @key for an entry
591 : : * matching @vendor and @model, if found, return the matching
592 : : * flags value, else return the host or global default settings.
593 : : * Called during scan time.
594 : : **/
595 : 0 : blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
596 : : const unsigned char *vendor,
597 : : const unsigned char *model,
598 : : enum scsi_devinfo_key key)
599 : : {
600 : : struct scsi_dev_info_list *devinfo;
601 : :
602 : 0 : devinfo = scsi_dev_info_list_find(vendor, model, key);
603 [ # # ]: 0 : if (!IS_ERR(devinfo))
604 : 0 : return devinfo->flags;
605 : :
606 : : /* key or device not found: return nothing */
607 [ # # ]: 0 : if (key != SCSI_DEVINFO_GLOBAL)
608 : : return 0;
609 : :
610 : : /* except for the global list, where we have an exception */
611 [ # # ]: 0 : if (sdev->sdev_bflags)
612 : : return sdev->sdev_bflags;
613 : :
614 : 0 : return scsi_default_dev_flags;
615 : : }
616 : : EXPORT_SYMBOL(scsi_get_device_flags_keyed);
617 : :
618 : : #ifdef CONFIG_SCSI_PROC_FS
619 : : struct double_list {
620 : : struct list_head *top;
621 : : struct list_head *bottom;
622 : : };
623 : :
624 : : static int devinfo_seq_show(struct seq_file *m, void *v)
625 : : {
626 : : struct double_list *dl = v;
627 : : struct scsi_dev_info_list_table *devinfo_table =
628 : : list_entry(dl->top, struct scsi_dev_info_list_table, node);
629 : : struct scsi_dev_info_list *devinfo =
630 : : list_entry(dl->bottom, struct scsi_dev_info_list,
631 : : dev_info_list);
632 : :
633 : : if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
634 : : devinfo_table->name)
635 : : seq_printf(m, "[%s]:\n", devinfo_table->name);
636 : :
637 : : seq_printf(m, "'%.8s' '%.16s' 0x%llx\n",
638 : : devinfo->vendor, devinfo->model, devinfo->flags);
639 : : return 0;
640 : : }
641 : :
642 : : static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
643 : : {
644 : : struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
645 : : loff_t pos = *ppos;
646 : :
647 : : if (!dl)
648 : : return NULL;
649 : :
650 : : list_for_each(dl->top, &scsi_dev_info_list) {
651 : : struct scsi_dev_info_list_table *devinfo_table =
652 : : list_entry(dl->top, struct scsi_dev_info_list_table,
653 : : node);
654 : : list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
655 : : if (pos-- == 0)
656 : : return dl;
657 : : }
658 : :
659 : : kfree(dl);
660 : : return NULL;
661 : : }
662 : :
663 : : static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
664 : : {
665 : : struct double_list *dl = v;
666 : : struct scsi_dev_info_list_table *devinfo_table =
667 : : list_entry(dl->top, struct scsi_dev_info_list_table, node);
668 : :
669 : : ++*ppos;
670 : : dl->bottom = dl->bottom->next;
671 : : while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
672 : : dl->top = dl->top->next;
673 : : if (dl->top == &scsi_dev_info_list) {
674 : : kfree(dl);
675 : : return NULL;
676 : : }
677 : : devinfo_table = list_entry(dl->top,
678 : : struct scsi_dev_info_list_table,
679 : : node);
680 : : dl->bottom = devinfo_table->scsi_dev_info_list.next;
681 : : }
682 : :
683 : : return dl;
684 : : }
685 : :
686 : : static void devinfo_seq_stop(struct seq_file *m, void *v)
687 : : {
688 : : kfree(v);
689 : : }
690 : :
691 : : static const struct seq_operations scsi_devinfo_seq_ops = {
692 : : .start = devinfo_seq_start,
693 : : .next = devinfo_seq_next,
694 : : .stop = devinfo_seq_stop,
695 : : .show = devinfo_seq_show,
696 : : };
697 : :
698 : : static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
699 : : {
700 : : return seq_open(file, &scsi_devinfo_seq_ops);
701 : : }
702 : :
703 : : /*
704 : : * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
705 : : *
706 : : * Description: Adds a black/white list entry for vendor and model with an
707 : : * integer value of flag to the scsi device info list.
708 : : * To use, echo "vendor:model:flag" > /proc/scsi/device_info
709 : : */
710 : : static ssize_t proc_scsi_devinfo_write(struct file *file,
711 : : const char __user *buf,
712 : : size_t length, loff_t *ppos)
713 : : {
714 : : char *buffer;
715 : : ssize_t err = length;
716 : :
717 : : if (!buf || length>PAGE_SIZE)
718 : : return -EINVAL;
719 : : if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
720 : : return -ENOMEM;
721 : : if (copy_from_user(buffer, buf, length)) {
722 : : err =-EFAULT;
723 : : goto out;
724 : : }
725 : :
726 : : if (length < PAGE_SIZE)
727 : : buffer[length] = '\0';
728 : : else if (buffer[PAGE_SIZE-1]) {
729 : : err = -EINVAL;
730 : : goto out;
731 : : }
732 : :
733 : : scsi_dev_info_list_add_str(buffer);
734 : :
735 : : out:
736 : : free_page((unsigned long)buffer);
737 : : return err;
738 : : }
739 : :
740 : : static const struct file_operations scsi_devinfo_proc_fops = {
741 : : .owner = THIS_MODULE,
742 : : .open = proc_scsi_devinfo_open,
743 : : .read = seq_read,
744 : : .write = proc_scsi_devinfo_write,
745 : : .llseek = seq_lseek,
746 : : .release = seq_release,
747 : : };
748 : : #endif /* CONFIG_SCSI_PROC_FS */
749 : :
750 : : module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
751 : : MODULE_PARM_DESC(dev_flags,
752 : : "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
753 : : " list entries for vendor and model with an integer value of flags"
754 : : " to the scsi device info list");
755 : :
756 : : module_param_named(default_dev_flags, scsi_default_dev_flags, ullong, 0644);
757 : : MODULE_PARM_DESC(default_dev_flags,
758 : : "scsi default device flag uint64_t value");
759 : :
760 : : /**
761 : : * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
762 : : **/
763 : 0 : void scsi_exit_devinfo(void)
764 : : {
765 : : #ifdef CONFIG_SCSI_PROC_FS
766 : : remove_proc_entry("scsi/device_info", NULL);
767 : : #endif
768 : :
769 : 0 : scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
770 : 0 : }
771 : :
772 : : /**
773 : : * scsi_dev_info_add_list - add a new devinfo list
774 : : * @key: key of the list to add
775 : : * @name: Name of the list to add (for /proc/scsi/device_info)
776 : : *
777 : : * Adds the requested list, returns zero on success, -EEXIST if the
778 : : * key is already registered to a list, or other error on failure.
779 : : */
780 : 207 : int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name)
781 : : {
782 : : struct scsi_dev_info_list_table *devinfo_table =
783 : 207 : scsi_devinfo_lookup_by_key(key);
784 : :
785 [ + - ]: 207 : if (!IS_ERR(devinfo_table))
786 : : /* list already exists */
787 : : return -EEXIST;
788 : :
789 : : devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
790 : :
791 [ + - ]: 207 : if (!devinfo_table)
792 : : return -ENOMEM;
793 : :
794 : 207 : INIT_LIST_HEAD(&devinfo_table->node);
795 : 207 : INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
796 : 207 : devinfo_table->name = name;
797 : 207 : devinfo_table->key = key;
798 : : list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
799 : :
800 : 207 : return 0;
801 : : }
802 : : EXPORT_SYMBOL(scsi_dev_info_add_list);
803 : :
804 : : /**
805 : : * scsi_dev_info_remove_list - destroy an added devinfo list
806 : : * @key: key of the list to destroy
807 : : *
808 : : * Iterates over the entire list first, freeing all the values, then
809 : : * frees the list itself. Returns 0 on success or -EINVAL if the key
810 : : * can't be found.
811 : : */
812 : 0 : int scsi_dev_info_remove_list(enum scsi_devinfo_key key)
813 : : {
814 : : struct list_head *lh, *lh_next;
815 : : struct scsi_dev_info_list_table *devinfo_table =
816 : 0 : scsi_devinfo_lookup_by_key(key);
817 : :
818 [ # # ]: 0 : if (IS_ERR(devinfo_table))
819 : : /* no such list */
820 : : return -EINVAL;
821 : :
822 : : /* remove from the master list */
823 : : list_del(&devinfo_table->node);
824 : :
825 [ # # ]: 0 : list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
826 : : struct scsi_dev_info_list *devinfo;
827 : :
828 : : devinfo = list_entry(lh, struct scsi_dev_info_list,
829 : : dev_info_list);
830 : 0 : kfree(devinfo);
831 : : }
832 : 0 : kfree(devinfo_table);
833 : :
834 : 0 : return 0;
835 : : }
836 : : EXPORT_SYMBOL(scsi_dev_info_remove_list);
837 : :
838 : : /**
839 : : * scsi_init_devinfo - set up the dynamic device list.
840 : : *
841 : : * Description:
842 : : * Add command line entries from scsi_dev_flags, then add
843 : : * scsi_static_device_list entries to the scsi device info list.
844 : : */
845 : 207 : int __init scsi_init_devinfo(void)
846 : : {
847 : : #ifdef CONFIG_SCSI_PROC_FS
848 : : struct proc_dir_entry *p;
849 : : #endif
850 : : int error, i;
851 : :
852 : 207 : error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
853 [ + - ]: 207 : if (error)
854 : : return error;
855 : :
856 : 207 : error = scsi_dev_info_list_add_str(scsi_dev_flags);
857 [ + - ]: 207 : if (error)
858 : : goto out;
859 : :
860 [ + + ]: 36846 : for (i = 0; scsi_static_device_list[i].vendor; i++) {
861 : 36846 : error = scsi_dev_info_list_add(1 /* compatibile */,
862 : : scsi_static_device_list[i].vendor,
863 : : scsi_static_device_list[i].model,
864 : : NULL,
865 : : scsi_static_device_list[i].flags);
866 [ + - ]: 36846 : if (error)
867 : : goto out;
868 : : }
869 : :
870 : : #ifdef CONFIG_SCSI_PROC_FS
871 : : p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
872 : : if (!p) {
873 : : error = -ENOMEM;
874 : : goto out;
875 : : }
876 : : #endif /* CONFIG_SCSI_PROC_FS */
877 : :
878 : : out:
879 [ - + ]: 207 : if (error)
880 : : scsi_exit_devinfo();
881 : 207 : return error;
882 : : }
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