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Linux 4.1-rc1
[linux-2.6-block.git] / drivers / scsi / scsi_devinfo.c
CommitLineData
1da177e4
LT		 1
2#include <linux/blkdev.h>
3#include <linux/init.h>
4#include <linux/kernel.h>
5#include <linux/module.h>
6#include <linux/moduleparam.h>
7#include <linux/proc_fs.h>
8#include <linux/seq_file.h>
5a0e3ad6 9#include <linux/slab.h>
1da177e4
LT		 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 */
20struct 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
598fa4b7
JB		 28struct 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
1da177e4
LT		 35
36static const char spaces[] = " "; /* 16 of them */
37static unsigned scsi_default_dev_flags;
38static LIST_HEAD(scsi_dev_info_list);
39static 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 */
50static 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 */
f2536cbd
BK		 67 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */
68 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */
1da177e4
LT		 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},
1c536315 123 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
1da177e4
LT		 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 */
0d7323c8 128 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */
1da177e4
LT		 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},
80dc3e06 139 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
98acfc7e 140 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
1da177e4
LT		 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 */
4d7db04a
JB		 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 */
1da177e4
LT		 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},
507caac7 154 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
1da177e4
LT		 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 */
3441afc6 162 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
1da177e4
LT		 163 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
164 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
80b1c7bd 165 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
166 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
167 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
1da177e4
LT		 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},
627511e3
TY		 172 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
173 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
174 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
d974e426 175 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
627511e3 176 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
f70cfa9b
MC		 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},
1da177e4 182 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
9ba0883c 183 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
1da177e4
LT		 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},
c3d83368 188 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
f70cfa9b
MC		 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},
1da177e4
LT		 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},
82103978 201 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
1da177e4
LT		 202 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
203 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
204 {"INSITE", "I325VM", NULL, BLIST_KEY},
18990455 205 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
1da177e4
LT		 206 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
207 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
208 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
209 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
210 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
211 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
212 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
213 {"MICROP", "4110", NULL, BLIST_NOTQ},
198a956a 214 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC},
1da177e4
LT		 215 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
216 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
217 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
218 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
12427d99 220 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
1da177e4
LT		 221 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
222 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
223 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
224 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
225 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
f4fd20bf 226 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
0213436a 227 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
e0b2e597 228 {"Promise", "", NULL, BLIST_SPARSELUN},
2ffb45c6 229 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
1da177e4
LT		 230 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
231 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
232 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
233 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
56f2a801 234 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
1da177e4
LT		 235 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
236 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
237 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
238 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
48690405 239 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
debf4777 240 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
4aa312b9 241 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
1da177e4
LT		 242 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
243 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
244 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
245 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
246 {"SUN", "T300", "*", BLIST_SPARSELUN},
247 {"SUN", "T4", "*", BLIST_SPARSELUN},
248 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
5f619c5b 249 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
1da177e4
LT		 250 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
251 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
82103978 252 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
1da177e4
LT		 253 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
254 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
255 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
256 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
257 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
258 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
259 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
260 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
261 { NULL, NULL, NULL, 0 },
262};
263
598fa4b7
JB		 264static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
265{
266 struct scsi_dev_info_list_table *devinfo_table;
267 int found = 0;
268
269 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
270 if (devinfo_table->key == key) {
271 found = 1;
272 break;
273 }
274 if (!found)
275 return ERR_PTR(-EINVAL);
276
277 return devinfo_table;
278}
279
1da177e4
LT		 280/*
281 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
282 * devinfo vendor and model strings.
283 */
284static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
285 char *from, int compatible)
286{
287 size_t from_length;
288
289 from_length = strlen(from);
290 strncpy(to, from, min(to_length, from_length));
291 if (from_length < to_length) {
292 if (compatible) {
293 /*
294 * NUL terminate the string if it is short.
295 */
296 to[from_length] = '\0';
297 } else {
298 /*
299 * space pad the string if it is short.
300 */
301 strncpy(&to[from_length], spaces,
302 to_length - from_length);
303 }
304 }
305 if (from_length > to_length)
306 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
cadbd4a5 307 __func__, name, from);
1da177e4
LT		 308}
309
310/**
eb44820c
RL		 311 * scsi_dev_info_list_add - add one dev_info list entry.
312 * @compatible: if true, null terminate short strings. Otherwise space pad.
1da177e4
LT		 313 * @vendor: vendor string
314 * @model: model (product) string
315 * @strflags: integer string
eb44820c 316 * @flags: if strflags NULL, use this flag value
1da177e4
LT		 317 *
318 * Description:
319 * Create and add one dev_info entry for @vendor, @model, @strflags or
320 * @flag. If @compatible, add to the tail of the list, do not space
321 * pad, and set devinfo->compatible. The scsi_static_device_list entries
322 * are added with @compatible 1 and @clfags NULL.
323 *
324 * Returns: 0 OK, -error on failure.
325 **/
326static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
327 char *strflags, int flags)
598fa4b7
JB		 328{
329 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
330 strflags, flags,
331 SCSI_DEVINFO_GLOBAL);
332}
333
334/**
335 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
336 * @compatible: if true, null terminate short strings. Otherwise space pad.
337 * @vendor: vendor string
338 * @model: model (product) string
339 * @strflags: integer string
340 * @flags: if strflags NULL, use this flag value
341 * @key: specify list to use
342 *
343 * Description:
344 * Create and add one dev_info entry for @vendor, @model,
345 * @strflags or @flag in list specified by @key. If @compatible,
346 * add to the tail of the list, do not space pad, and set
347 * devinfo->compatible. The scsi_static_device_list entries are
348 * added with @compatible 1 and @clfags NULL.
349 *
350 * Returns: 0 OK, -error on failure.
351 **/
352int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
353 char *strflags, int flags, int key)
1da177e4
LT		 354{
355 struct scsi_dev_info_list *devinfo;
598fa4b7
JB		 356 struct scsi_dev_info_list_table *devinfo_table =
357 scsi_devinfo_lookup_by_key(key);
358
359 if (IS_ERR(devinfo_table))
360 return PTR_ERR(devinfo_table);
1da177e4
LT		 361
362 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
363 if (!devinfo) {
cadbd4a5 364 printk(KERN_ERR "%s: no memory\n", __func__);
1da177e4
LT		 365 return -ENOMEM;
366 }
367
368 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
369 vendor, compatible);
370 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
371 model, compatible);
372
373 if (strflags)
374 devinfo->flags = simple_strtoul(strflags, NULL, 0);
375 else
376 devinfo->flags = flags;
377
378 devinfo->compatible = compatible;
379
380 if (compatible)
598fa4b7
JB		 381 list_add_tail(&devinfo->dev_info_list,
382 &devinfo_table->scsi_dev_info_list);
1da177e4 383 else
598fa4b7
JB		 384 list_add(&devinfo->dev_info_list,
385 &devinfo_table->scsi_dev_info_list);
1da177e4
LT		 386
387 return 0;
388}
598fa4b7 389EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
1da177e4 390
38a039be
PJ		 391/**
392 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
393 * @vendor: vendor string
394 * @model: model (product) string
395 * @key: specify list to use
396 *
397 * Description:
398 * Remove and destroy one dev_info entry for @vendor, @model
399 * in list specified by @key.
400 *
401 * Returns: 0 OK, -error on failure.
402 **/
403int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
404{
405 struct scsi_dev_info_list *devinfo, *found = NULL;
406 struct scsi_dev_info_list_table *devinfo_table =
407 scsi_devinfo_lookup_by_key(key);
408
409 if (IS_ERR(devinfo_table))
410 return PTR_ERR(devinfo_table);
411
412 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
413 dev_info_list) {
414 if (devinfo->compatible) {
415 /*
416 * Behave like the older version of get_device_flags.
417 */
418 size_t max;
419 /*
420 * XXX why skip leading spaces? If an odd INQUIRY
421 * value, that should have been part of the
422 * scsi_static_device_list[] entry, such as " FOO"
423 * rather than "FOO". Since this code is already
424 * here, and we don't know what device it is
425 * trying to work with, leave it as-is.
426 */
427 max = 8; /* max length of vendor */
428 while ((max > 0) && *vendor == ' ') {
429 max--;
430 vendor++;
431 }
432 /*
433 * XXX removing the following strlen() would be
434 * good, using it means that for a an entry not in
435 * the list, we scan every byte of every vendor
436 * listed in scsi_static_device_list[], and never match
437 * a single one (and still have to compare at
438 * least the first byte of each vendor).
439 */
440 if (memcmp(devinfo->vendor, vendor,
441 min(max, strlen(devinfo->vendor))))
442 continue;
443 /*
444 * Skip spaces again.
445 */
446 max = 16; /* max length of model */
447 while ((max > 0) && *model == ' ') {
448 max--;
449 model++;
450 }
451 if (memcmp(devinfo->model, model,
452 min(max, strlen(devinfo->model))))
453 continue;
454 found = devinfo;
455 } else {
456 if (!memcmp(devinfo->vendor, vendor,
457 sizeof(devinfo->vendor)) &&
458 !memcmp(devinfo->model, model,
459 sizeof(devinfo->model)))
460 found = devinfo;
461 }
462 if (found)
463 break;
464 }
465
466 if (found) {
467 list_del(&found->dev_info_list);
468 kfree(found);
469 return 0;
470 }
471
472 return -ENOENT;
473}
474EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
475
1da177e4 476/**
eb44820c 477 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
1da177e4
LT		 478 * @dev_list: string of device flags to add
479 *
480 * Description:
481 * Parse dev_list, and add entries to the scsi_dev_info_list.
482 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
483 * dev_list is modified via strsep. Can be called for command line
484 * addition, for proc or mabye a sysfs interface.
485 *
486 * Returns: 0 if OK, -error on failure.
487 **/
488static int scsi_dev_info_list_add_str(char *dev_list)
489{
490 char *vendor, *model, *strflags, *next;
491 char *next_check;
492 int res = 0;
493
494 next = dev_list;
495 if (next && next[0] == '"') {
496 /*
497 * Ignore both the leading and trailing quote.
498 */
499 next++;
500 next_check = ",\"";
501 } else {
502 next_check = ",";
503 }
504
505 /*
506 * For the leading and trailing '"' case, the for loop comes
507 * through the last time with vendor[0] == '\0'.
508 */
509 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
510 && (res == 0); vendor = strsep(&next, ":")) {
511 strflags = NULL;
512 model = strsep(&next, ":");
513 if (model)
514 strflags = strsep(&next, next_check);
515 if (!model || !strflags) {
516 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
cadbd4a5 517 " '%s'\n", __func__, vendor, model,
1da177e4
LT		 518 strflags);
519 res = -EINVAL;
520 } else
521 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
522 model, strflags, 0);
523 }
524 return res;
525}
526
527/**
eb44820c
RL		 528 * get_device_flags - get device specific flags from the dynamic device list.
529 * @sdev: &scsi_device to get flags for
1da177e4
LT		 530 * @vendor: vendor name
531 * @model: model name
532 *
533 * Description:
598fa4b7
JB		 534 * Search the global scsi_dev_info_list (specified by list zero)
535 * for an entry matching @vendor and @model, if found, return the
536 * matching flags value, else return the host or global default
537 * settings. Called during scan time.
1da177e4 538 **/
7f23e146
JB		 539int scsi_get_device_flags(struct scsi_device *sdev,
540 const unsigned char *vendor,
541 const unsigned char *model)
598fa4b7
JB		 542{
543 return scsi_get_device_flags_keyed(sdev, vendor, model,
544 SCSI_DEVINFO_GLOBAL);
545}
546
547
548/**
1acf3b06 549 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
598fa4b7
JB		 550 * @sdev: &scsi_device to get flags for
551 * @vendor: vendor name
552 * @model: model name
553 * @key: list to look up
554 *
555 * Description:
556 * Search the scsi_dev_info_list specified by @key for an entry
557 * matching @vendor and @model, if found, return the matching
558 * flags value, else return the host or global default settings.
559 * Called during scan time.
560 **/
561int scsi_get_device_flags_keyed(struct scsi_device *sdev,
562 const unsigned char *vendor,
563 const unsigned char *model,
564 int key)
1da177e4
LT		 565{
566 struct scsi_dev_info_list *devinfo;
598fa4b7
JB		 567 struct scsi_dev_info_list_table *devinfo_table;
568
569 devinfo_table = scsi_devinfo_lookup_by_key(key);
1da177e4 570
598fa4b7
JB		 571 if (IS_ERR(devinfo_table))
572 return PTR_ERR(devinfo_table);
1da177e4 573
598fa4b7
JB		 574 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
575 dev_info_list) {
1da177e4
LT		 576 if (devinfo->compatible) {
577 /*
578 * Behave like the older version of get_device_flags.
579 */
580 size_t max;
581 /*
582 * XXX why skip leading spaces? If an odd INQUIRY
583 * value, that should have been part of the
584 * scsi_static_device_list[] entry, such as " FOO"
585 * rather than "FOO". Since this code is already
586 * here, and we don't know what device it is
587 * trying to work with, leave it as-is.
588 */
589 max = 8; /* max length of vendor */
590 while ((max > 0) && *vendor == ' ') {
591 max--;
592 vendor++;
593 }
594 /*
595 * XXX removing the following strlen() would be
596 * good, using it means that for a an entry not in
597 * the list, we scan every byte of every vendor
598 * listed in scsi_static_device_list[], and never match
599 * a single one (and still have to compare at
600 * least the first byte of each vendor).
601 */
602 if (memcmp(devinfo->vendor, vendor,
603 min(max, strlen(devinfo->vendor))))
604 continue;
605 /*
606 * Skip spaces again.
607 */
608 max = 16; /* max length of model */
609 while ((max > 0) && *model == ' ') {
610 max--;
611 model++;
612 }
613 if (memcmp(devinfo->model, model,
614 min(max, strlen(devinfo->model))))
615 continue;
616 return devinfo->flags;
617 } else {
618 if (!memcmp(devinfo->vendor, vendor,
619 sizeof(devinfo->vendor)) &&
620 !memcmp(devinfo->model, model,
621 sizeof(devinfo->model)))
622 return devinfo->flags;
623 }
624 }
598fa4b7
JB		 625 /* nothing found, return nothing */
626 if (key != SCSI_DEVINFO_GLOBAL)
627 return 0;
628
629 /* except for the global list, where we have an exception */
630 if (sdev->sdev_bflags)
631 return sdev->sdev_bflags;
632
633 return scsi_default_dev_flags;
1da177e4 634}
598fa4b7 635EXPORT_SYMBOL(scsi_get_device_flags_keyed);
1da177e4
LT		 636
637#ifdef CONFIG_SCSI_PROC_FS
598fa4b7
JB		 638struct double_list {
639 struct list_head *top;
640 struct list_head *bottom;
641};
642
352ced8e 643static int devinfo_seq_show(struct seq_file *m, void *v)
1da177e4 644{
598fa4b7
JB		 645 struct double_list *dl = v;
646 struct scsi_dev_info_list_table *devinfo_table =
647 list_entry(dl->top, struct scsi_dev_info_list_table, node);
352ced8e 648 struct scsi_dev_info_list *devinfo =
598fa4b7
JB		 649 list_entry(dl->bottom, struct scsi_dev_info_list,
650 dev_info_list);
651
652 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
653 devinfo_table->name)
654 seq_printf(m, "[%s]:\n", devinfo_table->name);
1da177e4 655
352ced8e 656 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
598fa4b7 657 devinfo->vendor, devinfo->model, devinfo->flags);
352ced8e
AD		 658 return 0;
659}
660
598fa4b7 661static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
352ced8e 662{
598fa4b7
JB		 663 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
664 loff_t pos = *ppos;
665
666 if (!dl)
667 return NULL;
668
669 list_for_each(dl->top, &scsi_dev_info_list) {
670 struct scsi_dev_info_list_table *devinfo_table =
671 list_entry(dl->top, struct scsi_dev_info_list_table,
672 node);
673 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
674 if (pos-- == 0)
675 return dl;
676 }
677
678 kfree(dl);
679 return NULL;
352ced8e 680}
1da177e4 681
598fa4b7 682static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
352ced8e 683{
598fa4b7
JB		 684 struct double_list *dl = v;
685 struct scsi_dev_info_list_table *devinfo_table =
686 list_entry(dl->top, struct scsi_dev_info_list_table, node);
687
688 ++*ppos;
689 dl->bottom = dl->bottom->next;
690 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
691 dl->top = dl->top->next;
692 if (dl->top == &scsi_dev_info_list) {
693 kfree(dl);
694 return NULL;
695 }
696 devinfo_table = list_entry(dl->top,
697 struct scsi_dev_info_list_table,
698 node);
699 dl->bottom = devinfo_table->scsi_dev_info_list.next;
700 }
701
702 return dl;
352ced8e
AD		 703}
704
705static void devinfo_seq_stop(struct seq_file *m, void *v)
706{
598fa4b7 707 kfree(v);
352ced8e
AD		 708}
709
710static const struct seq_operations scsi_devinfo_seq_ops = {
711 .start = devinfo_seq_start,
712 .next = devinfo_seq_next,
713 .stop = devinfo_seq_stop,
714 .show = devinfo_seq_show,
715};
716
717static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
718{
719 return seq_open(file, &scsi_devinfo_seq_ops);
1da177e4
LT		 720}
721
722/*
eb44820c 723 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
1da177e4 724 *
eb44820c
RL		 725 * Description: Adds a black/white list entry for vendor and model with an
726 * integer value of flag to the scsi device info list.
727 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
1da177e4 728 */
352ced8e
AD		 729static ssize_t proc_scsi_devinfo_write(struct file *file,
730 const char __user *buf,
731 size_t length, loff_t *ppos)
1da177e4
LT		 732{
733 char *buffer;
352ced8e 734 ssize_t err = length;
1da177e4
LT		 735
736 if (!buf || length>PAGE_SIZE)
737 return -EINVAL;
738 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
739 return -ENOMEM;
740 if (copy_from_user(buffer, buf, length)) {
741 err =-EFAULT;
742 goto out;
743 }
744
745 if (length < PAGE_SIZE)
746 buffer[length] = '\0';
747 else if (buffer[PAGE_SIZE-1]) {
748 err = -EINVAL;
749 goto out;
750 }
751
752 scsi_dev_info_list_add_str(buffer);
753
754out:
755 free_page((unsigned long)buffer);
756 return err;
757}
352ced8e
AD		 758
759static const struct file_operations scsi_devinfo_proc_fops = {
760 .owner = THIS_MODULE,
761 .open = proc_scsi_devinfo_open,
762 .read = seq_read,
763 .write = proc_scsi_devinfo_write,
764 .llseek = seq_lseek,
765 .release = seq_release,
766};
1da177e4
LT		 767#endif /* CONFIG_SCSI_PROC_FS */
768
769module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
770MODULE_PARM_DESC(dev_flags,
771 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
772 " list entries for vendor and model with an integer value of flags"
773 " to the scsi device info list");
774
775module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
776MODULE_PARM_DESC(default_dev_flags,
777 "scsi default device flag integer value");
778
779/**
1acf3b06 780 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
1da177e4
LT		 781 **/
782void scsi_exit_devinfo(void)
783{
1da177e4
LT		 784#ifdef CONFIG_SCSI_PROC_FS
785 remove_proc_entry("scsi/device_info", NULL);
786#endif
787
598fa4b7
JB		 788 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
789}
790
791/**
792 * scsi_dev_info_add_list - add a new devinfo list
793 * @key: key of the list to add
794 * @name: Name of the list to add (for /proc/scsi/device_info)
795 *
796 * Adds the requested list, returns zero on success, -EEXIST if the
797 * key is already registered to a list, or other error on failure.
798 */
799int scsi_dev_info_add_list(int key, const char *name)
800{
801 struct scsi_dev_info_list_table *devinfo_table =
802 scsi_devinfo_lookup_by_key(key);
803
804 if (!IS_ERR(devinfo_table))
805 /* list already exists */
806 return -EEXIST;
807
808 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
809
810 if (!devinfo_table)
811 return -ENOMEM;
812
813 INIT_LIST_HEAD(&devinfo_table->node);
814 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
815 devinfo_table->name = name;
816 devinfo_table->key = key;
817 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
818
819 return 0;
820}
821EXPORT_SYMBOL(scsi_dev_info_add_list);
822
823/**
824 * scsi_dev_info_remove_list - destroy an added devinfo list
825 * @key: key of the list to destroy
826 *
827 * Iterates over the entire list first, freeing all the values, then
828 * frees the list itself. Returns 0 on success or -EINVAL if the key
829 * can't be found.
830 */
831int scsi_dev_info_remove_list(int key)
832{
833 struct list_head *lh, *lh_next;
834 struct scsi_dev_info_list_table *devinfo_table =
835 scsi_devinfo_lookup_by_key(key);
836
837 if (IS_ERR(devinfo_table))
838 /* no such list */
839 return -EINVAL;
840
841 /* remove from the master list */
842 list_del(&devinfo_table->node);
843
844 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
845 struct scsi_dev_info_list *devinfo;
846
1da177e4
LT		 847 devinfo = list_entry(lh, struct scsi_dev_info_list,
848 dev_info_list);
849 kfree(devinfo);
850 }
598fa4b7
JB		 851 kfree(devinfo_table);
852
853 return 0;
1da177e4 854}
598fa4b7 855EXPORT_SYMBOL(scsi_dev_info_remove_list);
1da177e4
LT		 856
857/**
c93ff979 858 * scsi_init_devinfo - set up the dynamic device list.
1da177e4
LT		 859 *
860 * Description:
eb44820c 861 * Add command line entries from scsi_dev_flags, then add
1da177e4 862 * scsi_static_device_list entries to the scsi device info list.
eb44820c 863 */
1da177e4
LT		 864int __init scsi_init_devinfo(void)
865{
866#ifdef CONFIG_SCSI_PROC_FS
867 struct proc_dir_entry *p;
868#endif
869 int error, i;
870
598fa4b7 871 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
1da177e4
LT		 872 if (error)
873 return error;
874
598fa4b7
JB		 875 error = scsi_dev_info_list_add_str(scsi_dev_flags);
876 if (error)
877 goto out;
878
1da177e4
LT		 879 for (i = 0; scsi_static_device_list[i].vendor; i++) {
880 error = scsi_dev_info_list_add(1 /* compatibile */,
881 scsi_static_device_list[i].vendor,
882 scsi_static_device_list[i].model,
883 NULL,
884 scsi_static_device_list[i].flags);
885 if (error)
886 goto out;
887 }
888
889#ifdef CONFIG_SCSI_PROC_FS
352ced8e 890 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
1da177e4
LT		 891 if (!p) {
892 error = -ENOMEM;
893 goto out;
894 }
1da177e4
LT		 895#endif /* CONFIG_SCSI_PROC_FS */
896
897 out:
898 if (error)
899 scsi_exit_devinfo();
900 return error;
901}
Linux 6.x block layer and io_uring tree(s)