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Merge branches 'acpi-resources', 'acpi-battery', 'acpi-doc' and 'acpi-pnp'
[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},
35e9a9f9 229 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
2ffb45c6 230 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
1da177e4
LT		 231 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
232 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
233 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
234 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
56f2a801 235 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
1da177e4
LT		 236 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
237 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
238 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
239 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
48690405 240 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
debf4777 241 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
4aa312b9 242 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
1da177e4
LT		 243 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
244 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
245 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
246 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
247 {"SUN", "T300", "*", BLIST_SPARSELUN},
248 {"SUN", "T4", "*", BLIST_SPARSELUN},
249 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
5f619c5b 250 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
1da177e4
LT		 251 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
252 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
82103978 253 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
1da177e4
LT		 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
598fa4b7
JB		 265static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
266{
267 struct scsi_dev_info_list_table *devinfo_table;
268 int found = 0;
269
270 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
271 if (devinfo_table->key == key) {
272 found = 1;
273 break;
274 }
275 if (!found)
276 return ERR_PTR(-EINVAL);
277
278 return devinfo_table;
279}
280
1da177e4
LT		 281/*
282 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
283 * devinfo vendor and model strings.
284 */
285static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
286 char *from, int compatible)
287{
288 size_t from_length;
289
290 from_length = strlen(from);
291 strncpy(to, from, min(to_length, from_length));
292 if (from_length < to_length) {
293 if (compatible) {
294 /*
295 * NUL terminate the string if it is short.
296 */
297 to[from_length] = '\0';
298 } else {
299 /*
300 * space pad the string if it is short.
301 */
302 strncpy(&to[from_length], spaces,
303 to_length - from_length);
304 }
305 }
306 if (from_length > to_length)
307 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
cadbd4a5 308 __func__, name, from);
1da177e4
LT		 309}
310
311/**
eb44820c
RL		 312 * scsi_dev_info_list_add - add one dev_info list entry.
313 * @compatible: if true, null terminate short strings. Otherwise space pad.
1da177e4
LT		 314 * @vendor: vendor string
315 * @model: model (product) string
316 * @strflags: integer string
eb44820c 317 * @flags: if strflags NULL, use this flag value
1da177e4
LT		 318 *
319 * Description:
320 * Create and add one dev_info entry for @vendor, @model, @strflags or
321 * @flag. If @compatible, add to the tail of the list, do not space
322 * pad, and set devinfo->compatible. The scsi_static_device_list entries
323 * are added with @compatible 1 and @clfags NULL.
324 *
325 * Returns: 0 OK, -error on failure.
326 **/
327static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
328 char *strflags, int flags)
598fa4b7
JB		 329{
330 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
331 strflags, flags,
332 SCSI_DEVINFO_GLOBAL);
333}
334
335/**
336 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
337 * @compatible: if true, null terminate short strings. Otherwise space pad.
338 * @vendor: vendor string
339 * @model: model (product) string
340 * @strflags: integer string
341 * @flags: if strflags NULL, use this flag value
342 * @key: specify list to use
343 *
344 * Description:
345 * Create and add one dev_info entry for @vendor, @model,
346 * @strflags or @flag in list specified by @key. If @compatible,
347 * add to the tail of the list, do not space pad, and set
348 * devinfo->compatible. The scsi_static_device_list entries are
349 * added with @compatible 1 and @clfags NULL.
350 *
351 * Returns: 0 OK, -error on failure.
352 **/
353int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
354 char *strflags, int flags, int key)
1da177e4
LT		 355{
356 struct scsi_dev_info_list *devinfo;
598fa4b7
JB		 357 struct scsi_dev_info_list_table *devinfo_table =
358 scsi_devinfo_lookup_by_key(key);
359
360 if (IS_ERR(devinfo_table))
361 return PTR_ERR(devinfo_table);
1da177e4
LT		 362
363 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
364 if (!devinfo) {
cadbd4a5 365 printk(KERN_ERR "%s: no memory\n", __func__);
1da177e4
LT		 366 return -ENOMEM;
367 }
368
369 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
370 vendor, compatible);
371 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
372 model, compatible);
373
374 if (strflags)
375 devinfo->flags = simple_strtoul(strflags, NULL, 0);
376 else
377 devinfo->flags = flags;
378
379 devinfo->compatible = compatible;
380
381 if (compatible)
598fa4b7
JB		 382 list_add_tail(&devinfo->dev_info_list,
383 &devinfo_table->scsi_dev_info_list);
1da177e4 384 else
598fa4b7
JB		 385 list_add(&devinfo->dev_info_list,
386 &devinfo_table->scsi_dev_info_list);
1da177e4
LT		 387
388 return 0;
389}
598fa4b7 390EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
1da177e4 391
38a039be
PJ		 392/**
393 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
394 * @vendor: vendor string
395 * @model: model (product) string
396 * @key: specify list to use
397 *
398 * Description:
399 * Remove and destroy one dev_info entry for @vendor, @model
400 * in list specified by @key.
401 *
402 * Returns: 0 OK, -error on failure.
403 **/
404int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
405{
406 struct scsi_dev_info_list *devinfo, *found = NULL;
407 struct scsi_dev_info_list_table *devinfo_table =
408 scsi_devinfo_lookup_by_key(key);
409
410 if (IS_ERR(devinfo_table))
411 return PTR_ERR(devinfo_table);
412
413 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
414 dev_info_list) {
415 if (devinfo->compatible) {
416 /*
417 * Behave like the older version of get_device_flags.
418 */
419 size_t max;
420 /*
421 * XXX why skip leading spaces? If an odd INQUIRY
422 * value, that should have been part of the
423 * scsi_static_device_list[] entry, such as " FOO"
424 * rather than "FOO". Since this code is already
425 * here, and we don't know what device it is
426 * trying to work with, leave it as-is.
427 */
428 max = 8; /* max length of vendor */
429 while ((max > 0) && *vendor == ' ') {
430 max--;
431 vendor++;
432 }
433 /*
434 * XXX removing the following strlen() would be
435 * good, using it means that for a an entry not in
436 * the list, we scan every byte of every vendor
437 * listed in scsi_static_device_list[], and never match
438 * a single one (and still have to compare at
439 * least the first byte of each vendor).
440 */
441 if (memcmp(devinfo->vendor, vendor,
442 min(max, strlen(devinfo->vendor))))
443 continue;
444 /*
445 * Skip spaces again.
446 */
447 max = 16; /* max length of model */
448 while ((max > 0) && *model == ' ') {
449 max--;
450 model++;
451 }
452 if (memcmp(devinfo->model, model,
453 min(max, strlen(devinfo->model))))
454 continue;
455 found = devinfo;
456 } else {
457 if (!memcmp(devinfo->vendor, vendor,
458 sizeof(devinfo->vendor)) &&
459 !memcmp(devinfo->model, model,
460 sizeof(devinfo->model)))
461 found = devinfo;
462 }
463 if (found)
464 break;
465 }
466
467 if (found) {
468 list_del(&found->dev_info_list);
469 kfree(found);
470 return 0;
471 }
472
473 return -ENOENT;
474}
475EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
476
1da177e4 477/**
eb44820c 478 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
1da177e4
LT		 479 * @dev_list: string of device flags to add
480 *
481 * Description:
482 * Parse dev_list, and add entries to the scsi_dev_info_list.
483 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
484 * dev_list is modified via strsep. Can be called for command line
485 * addition, for proc or mabye a sysfs interface.
486 *
487 * Returns: 0 if OK, -error on failure.
488 **/
489static int scsi_dev_info_list_add_str(char *dev_list)
490{
491 char *vendor, *model, *strflags, *next;
492 char *next_check;
493 int res = 0;
494
495 next = dev_list;
496 if (next && next[0] == '"') {
497 /*
498 * Ignore both the leading and trailing quote.
499 */
500 next++;
501 next_check = ",\"";
502 } else {
503 next_check = ",";
504 }
505
506 /*
507 * For the leading and trailing '"' case, the for loop comes
508 * through the last time with vendor[0] == '\0'.
509 */
510 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
511 && (res == 0); vendor = strsep(&next, ":")) {
512 strflags = NULL;
513 model = strsep(&next, ":");
514 if (model)
515 strflags = strsep(&next, next_check);
516 if (!model || !strflags) {
517 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
cadbd4a5 518 " '%s'\n", __func__, vendor, model,
1da177e4
LT		 519 strflags);
520 res = -EINVAL;
521 } else
522 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
523 model, strflags, 0);
524 }
525 return res;
526}
527
528/**
eb44820c
RL		 529 * get_device_flags - get device specific flags from the dynamic device list.
530 * @sdev: &scsi_device to get flags for
1da177e4
LT		 531 * @vendor: vendor name
532 * @model: model name
533 *
534 * Description:
598fa4b7
JB		 535 * Search the global scsi_dev_info_list (specified by list zero)
536 * for an entry matching @vendor and @model, if found, return the
537 * matching flags value, else return the host or global default
538 * settings. Called during scan time.
1da177e4 539 **/
7f23e146
JB		 540int scsi_get_device_flags(struct scsi_device *sdev,
541 const unsigned char *vendor,
542 const unsigned char *model)
598fa4b7
JB		 543{
544 return scsi_get_device_flags_keyed(sdev, vendor, model,
545 SCSI_DEVINFO_GLOBAL);
546}
547
548
549/**
1acf3b06 550 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
598fa4b7
JB		 551 * @sdev: &scsi_device to get flags for
552 * @vendor: vendor name
553 * @model: model name
554 * @key: list to look up
555 *
556 * Description:
557 * Search the scsi_dev_info_list specified by @key for an entry
558 * matching @vendor and @model, if found, return the matching
559 * flags value, else return the host or global default settings.
560 * Called during scan time.
561 **/
562int scsi_get_device_flags_keyed(struct scsi_device *sdev,
563 const unsigned char *vendor,
564 const unsigned char *model,
565 int key)
1da177e4
LT		 566{
567 struct scsi_dev_info_list *devinfo;
598fa4b7
JB		 568 struct scsi_dev_info_list_table *devinfo_table;
569
570 devinfo_table = scsi_devinfo_lookup_by_key(key);
1da177e4 571
598fa4b7
JB		 572 if (IS_ERR(devinfo_table))
573 return PTR_ERR(devinfo_table);
1da177e4 574
598fa4b7
JB		 575 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
576 dev_info_list) {
1da177e4
LT		 577 if (devinfo->compatible) {
578 /*
579 * Behave like the older version of get_device_flags.
580 */
581 size_t max;
582 /*
583 * XXX why skip leading spaces? If an odd INQUIRY
584 * value, that should have been part of the
585 * scsi_static_device_list[] entry, such as " FOO"
586 * rather than "FOO". Since this code is already
587 * here, and we don't know what device it is
588 * trying to work with, leave it as-is.
589 */
590 max = 8; /* max length of vendor */
591 while ((max > 0) && *vendor == ' ') {
592 max--;
593 vendor++;
594 }
595 /*
596 * XXX removing the following strlen() would be
597 * good, using it means that for a an entry not in
598 * the list, we scan every byte of every vendor
599 * listed in scsi_static_device_list[], and never match
600 * a single one (and still have to compare at
601 * least the first byte of each vendor).
602 */
603 if (memcmp(devinfo->vendor, vendor,
604 min(max, strlen(devinfo->vendor))))
605 continue;
606 /*
607 * Skip spaces again.
608 */
609 max = 16; /* max length of model */
610 while ((max > 0) && *model == ' ') {
611 max--;
612 model++;
613 }
614 if (memcmp(devinfo->model, model,
615 min(max, strlen(devinfo->model))))
616 continue;
617 return devinfo->flags;
618 } else {
619 if (!memcmp(devinfo->vendor, vendor,
620 sizeof(devinfo->vendor)) &&
621 !memcmp(devinfo->model, model,
622 sizeof(devinfo->model)))
623 return devinfo->flags;
624 }
625 }
598fa4b7
JB		 626 /* nothing found, return nothing */
627 if (key != SCSI_DEVINFO_GLOBAL)
628 return 0;
629
630 /* except for the global list, where we have an exception */
631 if (sdev->sdev_bflags)
632 return sdev->sdev_bflags;
633
634 return scsi_default_dev_flags;
1da177e4 635}
598fa4b7 636EXPORT_SYMBOL(scsi_get_device_flags_keyed);
1da177e4
LT		 637
638#ifdef CONFIG_SCSI_PROC_FS
598fa4b7
JB		 639struct double_list {
640 struct list_head *top;
641 struct list_head *bottom;
642};
643
352ced8e 644static int devinfo_seq_show(struct seq_file *m, void *v)
1da177e4 645{
598fa4b7
JB		 646 struct double_list *dl = v;
647 struct scsi_dev_info_list_table *devinfo_table =
648 list_entry(dl->top, struct scsi_dev_info_list_table, node);
352ced8e 649 struct scsi_dev_info_list *devinfo =
598fa4b7
JB		 650 list_entry(dl->bottom, struct scsi_dev_info_list,
651 dev_info_list);
652
653 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
654 devinfo_table->name)
655 seq_printf(m, "[%s]:\n", devinfo_table->name);
1da177e4 656
352ced8e 657 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
598fa4b7 658 devinfo->vendor, devinfo->model, devinfo->flags);
352ced8e
AD		 659 return 0;
660}
661
598fa4b7 662static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
352ced8e 663{
598fa4b7
JB		 664 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
665 loff_t pos = *ppos;
666
667 if (!dl)
668 return NULL;
669
670 list_for_each(dl->top, &scsi_dev_info_list) {
671 struct scsi_dev_info_list_table *devinfo_table =
672 list_entry(dl->top, struct scsi_dev_info_list_table,
673 node);
674 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
675 if (pos-- == 0)
676 return dl;
677 }
678
679 kfree(dl);
680 return NULL;
352ced8e 681}
1da177e4 682
598fa4b7 683static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
352ced8e 684{
598fa4b7
JB		 685 struct double_list *dl = v;
686 struct scsi_dev_info_list_table *devinfo_table =
687 list_entry(dl->top, struct scsi_dev_info_list_table, node);
688
689 ++*ppos;
690 dl->bottom = dl->bottom->next;
691 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
692 dl->top = dl->top->next;
693 if (dl->top == &scsi_dev_info_list) {
694 kfree(dl);
695 return NULL;
696 }
697 devinfo_table = list_entry(dl->top,
698 struct scsi_dev_info_list_table,
699 node);
700 dl->bottom = devinfo_table->scsi_dev_info_list.next;
701 }
702
703 return dl;
352ced8e
AD		 704}
705
706static void devinfo_seq_stop(struct seq_file *m, void *v)
707{
598fa4b7 708 kfree(v);
352ced8e
AD		 709}
710
711static const struct seq_operations scsi_devinfo_seq_ops = {
712 .start = devinfo_seq_start,
713 .next = devinfo_seq_next,
714 .stop = devinfo_seq_stop,
715 .show = devinfo_seq_show,
716};
717
718static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
719{
720 return seq_open(file, &scsi_devinfo_seq_ops);
1da177e4
LT		 721}
722
723/*
eb44820c 724 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
1da177e4 725 *
eb44820c
RL		 726 * Description: Adds a black/white list entry for vendor and model with an
727 * integer value of flag to the scsi device info list.
728 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
1da177e4 729 */
352ced8e
AD		 730static ssize_t proc_scsi_devinfo_write(struct file *file,
731 const char __user *buf,
732 size_t length, loff_t *ppos)
1da177e4
LT		 733{
734 char *buffer;
352ced8e 735 ssize_t err = length;
1da177e4
LT		 736
737 if (!buf || length>PAGE_SIZE)
738 return -EINVAL;
739 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
740 return -ENOMEM;
741 if (copy_from_user(buffer, buf, length)) {
742 err =-EFAULT;
743 goto out;
744 }
745
746 if (length < PAGE_SIZE)
747 buffer[length] = '\0';
748 else if (buffer[PAGE_SIZE-1]) {
749 err = -EINVAL;
750 goto out;
751 }
752
753 scsi_dev_info_list_add_str(buffer);
754
755out:
756 free_page((unsigned long)buffer);
757 return err;
758}
352ced8e
AD		 759
760static const struct file_operations scsi_devinfo_proc_fops = {
761 .owner = THIS_MODULE,
762 .open = proc_scsi_devinfo_open,
763 .read = seq_read,
764 .write = proc_scsi_devinfo_write,
765 .llseek = seq_lseek,
766 .release = seq_release,
767};
1da177e4
LT		 768#endif /* CONFIG_SCSI_PROC_FS */
769
770module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
771MODULE_PARM_DESC(dev_flags,
772 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
773 " list entries for vendor and model with an integer value of flags"
774 " to the scsi device info list");
775
776module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
777MODULE_PARM_DESC(default_dev_flags,
778 "scsi default device flag integer value");
779
780/**
1acf3b06 781 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
1da177e4
LT		 782 **/
783void scsi_exit_devinfo(void)
784{
1da177e4
LT		 785#ifdef CONFIG_SCSI_PROC_FS
786 remove_proc_entry("scsi/device_info", NULL);
787#endif
788
598fa4b7
JB		 789 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
790}
791
792/**
793 * scsi_dev_info_add_list - add a new devinfo list
794 * @key: key of the list to add
795 * @name: Name of the list to add (for /proc/scsi/device_info)
796 *
797 * Adds the requested list, returns zero on success, -EEXIST if the
798 * key is already registered to a list, or other error on failure.
799 */
800int scsi_dev_info_add_list(int key, const char *name)
801{
802 struct scsi_dev_info_list_table *devinfo_table =
803 scsi_devinfo_lookup_by_key(key);
804
805 if (!IS_ERR(devinfo_table))
806 /* list already exists */
807 return -EEXIST;
808
809 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
810
811 if (!devinfo_table)
812 return -ENOMEM;
813
814 INIT_LIST_HEAD(&devinfo_table->node);
815 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
816 devinfo_table->name = name;
817 devinfo_table->key = key;
818 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
819
820 return 0;
821}
822EXPORT_SYMBOL(scsi_dev_info_add_list);
823
824/**
825 * scsi_dev_info_remove_list - destroy an added devinfo list
826 * @key: key of the list to destroy
827 *
828 * Iterates over the entire list first, freeing all the values, then
829 * frees the list itself. Returns 0 on success or -EINVAL if the key
830 * can't be found.
831 */
832int scsi_dev_info_remove_list(int key)
833{
834 struct list_head *lh, *lh_next;
835 struct scsi_dev_info_list_table *devinfo_table =
836 scsi_devinfo_lookup_by_key(key);
837
838 if (IS_ERR(devinfo_table))
839 /* no such list */
840 return -EINVAL;
841
842 /* remove from the master list */
843 list_del(&devinfo_table->node);
844
845 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
846 struct scsi_dev_info_list *devinfo;
847
1da177e4
LT		 848 devinfo = list_entry(lh, struct scsi_dev_info_list,
849 dev_info_list);
850 kfree(devinfo);
851 }
598fa4b7
JB		 852 kfree(devinfo_table);
853
854 return 0;
1da177e4 855}
598fa4b7 856EXPORT_SYMBOL(scsi_dev_info_remove_list);
1da177e4
LT		 857
858/**
c93ff979 859 * scsi_init_devinfo - set up the dynamic device list.
1da177e4
LT		 860 *
861 * Description:
eb44820c 862 * Add command line entries from scsi_dev_flags, then add
1da177e4 863 * scsi_static_device_list entries to the scsi device info list.
eb44820c 864 */
1da177e4
LT		 865int __init scsi_init_devinfo(void)
866{
867#ifdef CONFIG_SCSI_PROC_FS
868 struct proc_dir_entry *p;
869#endif
870 int error, i;
871
598fa4b7 872 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
1da177e4
LT		 873 if (error)
874 return error;
875
598fa4b7
JB		 876 error = scsi_dev_info_list_add_str(scsi_dev_flags);
877 if (error)
878 goto out;
879
1da177e4
LT		 880 for (i = 0; scsi_static_device_list[i].vendor; i++) {
881 error = scsi_dev_info_list_add(1 /* compatibile */,
882 scsi_static_device_list[i].vendor,
883 scsi_static_device_list[i].model,
884 NULL,
885 scsi_static_device_list[i].flags);
886 if (error)
887 goto out;
888 }
889
890#ifdef CONFIG_SCSI_PROC_FS
352ced8e 891 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
1da177e4
LT		 892 if (!p) {
893 error = -ENOMEM;
894 goto out;
895 }
1da177e4
LT		 896#endif /* CONFIG_SCSI_PROC_FS */
897
898 out:
899 if (error)
900 scsi_exit_devinfo();
901 return error;
902}
Linux 6.x block layer and io_uring tree(s)