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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[net-next-2.6.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},
175 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
f70cfa9b
MC		 176 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
177 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
178 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
179 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
180 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
1da177e4 181 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
9ba0883c 182 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
1da177e4
LT		 183 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
184 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
185 {"HP", "C1557A", NULL, BLIST_FORCELUN},
186 {"HP", "C3323-300", "4269", BLIST_NOTQ},
c3d83368 187 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
f70cfa9b
MC		 188 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
189 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
190 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
191 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
192 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
193 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
194 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
195 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
1da177e4
LT		 196 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
197 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
198 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
199 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
200 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
201 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
202 {"INSITE", "I325VM", NULL, BLIST_KEY},
203 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
204 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
205 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
206 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
207 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
208 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
209 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
210 {"MICROP", "4110", NULL, BLIST_NOTQ},
211 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
212 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
213 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
214 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
215 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
12427d99 216 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
1da177e4
LT		 217 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
218 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
221 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
f4fd20bf 222 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
e0b2e597 223 {"Promise", "", NULL, BLIST_SPARSELUN},
2ffb45c6 224 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
1da177e4
LT		 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 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
230 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
231 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
232 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
48690405 233 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
debf4777 234 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
4aa312b9 235 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
1da177e4
LT		 236 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
237 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
238 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
239 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
240 {"SUN", "T300", "*", BLIST_SPARSELUN},
241 {"SUN", "T4", "*", BLIST_SPARSELUN},
242 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
5f619c5b 243 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
1da177e4
LT		 244 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
245 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
246 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
247 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
248 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
249 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
250 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
251 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
252 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
253 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
254 { NULL, NULL, NULL, 0 },
255};
256
598fa4b7
JB		 257static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
258{
259 struct scsi_dev_info_list_table *devinfo_table;
260 int found = 0;
261
262 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
263 if (devinfo_table->key == key) {
264 found = 1;
265 break;
266 }
267 if (!found)
268 return ERR_PTR(-EINVAL);
269
270 return devinfo_table;
271}
272
1da177e4
LT		 273/*
274 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
275 * devinfo vendor and model strings.
276 */
277static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
278 char *from, int compatible)
279{
280 size_t from_length;
281
282 from_length = strlen(from);
283 strncpy(to, from, min(to_length, from_length));
284 if (from_length < to_length) {
285 if (compatible) {
286 /*
287 * NUL terminate the string if it is short.
288 */
289 to[from_length] = '\0';
290 } else {
291 /*
292 * space pad the string if it is short.
293 */
294 strncpy(&to[from_length], spaces,
295 to_length - from_length);
296 }
297 }
298 if (from_length > to_length)
299 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
cadbd4a5 300 __func__, name, from);
1da177e4
LT		 301}
302
303/**
eb44820c
RL		 304 * scsi_dev_info_list_add - add one dev_info list entry.
305 * @compatible: if true, null terminate short strings. Otherwise space pad.
1da177e4
LT		 306 * @vendor: vendor string
307 * @model: model (product) string
308 * @strflags: integer string
eb44820c 309 * @flags: if strflags NULL, use this flag value
1da177e4
LT		 310 *
311 * Description:
312 * Create and add one dev_info entry for @vendor, @model, @strflags or
313 * @flag. If @compatible, add to the tail of the list, do not space
314 * pad, and set devinfo->compatible. The scsi_static_device_list entries
315 * are added with @compatible 1 and @clfags NULL.
316 *
317 * Returns: 0 OK, -error on failure.
318 **/
319static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
320 char *strflags, int flags)
598fa4b7
JB		 321{
322 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
323 strflags, flags,
324 SCSI_DEVINFO_GLOBAL);
325}
326
327/**
328 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
329 * @compatible: if true, null terminate short strings. Otherwise space pad.
330 * @vendor: vendor string
331 * @model: model (product) string
332 * @strflags: integer string
333 * @flags: if strflags NULL, use this flag value
334 * @key: specify list to use
335 *
336 * Description:
337 * Create and add one dev_info entry for @vendor, @model,
338 * @strflags or @flag in list specified by @key. If @compatible,
339 * add to the tail of the list, do not space pad, and set
340 * devinfo->compatible. The scsi_static_device_list entries are
341 * added with @compatible 1 and @clfags NULL.
342 *
343 * Returns: 0 OK, -error on failure.
344 **/
345int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
346 char *strflags, int flags, int key)
1da177e4
LT		 347{
348 struct scsi_dev_info_list *devinfo;
598fa4b7
JB		 349 struct scsi_dev_info_list_table *devinfo_table =
350 scsi_devinfo_lookup_by_key(key);
351
352 if (IS_ERR(devinfo_table))
353 return PTR_ERR(devinfo_table);
1da177e4
LT		 354
355 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
356 if (!devinfo) {
cadbd4a5 357 printk(KERN_ERR "%s: no memory\n", __func__);
1da177e4
LT		 358 return -ENOMEM;
359 }
360
361 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
362 vendor, compatible);
363 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
364 model, compatible);
365
366 if (strflags)
367 devinfo->flags = simple_strtoul(strflags, NULL, 0);
368 else
369 devinfo->flags = flags;
370
371 devinfo->compatible = compatible;
372
373 if (compatible)
598fa4b7
JB		 374 list_add_tail(&devinfo->dev_info_list,
375 &devinfo_table->scsi_dev_info_list);
1da177e4 376 else
598fa4b7
JB		 377 list_add(&devinfo->dev_info_list,
378 &devinfo_table->scsi_dev_info_list);
1da177e4
LT		 379
380 return 0;
381}
598fa4b7 382EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
1da177e4
LT		 383
384/**
eb44820c 385 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
1da177e4
LT		 386 * @dev_list: string of device flags to add
387 *
388 * Description:
389 * Parse dev_list, and add entries to the scsi_dev_info_list.
390 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
391 * dev_list is modified via strsep. Can be called for command line
392 * addition, for proc or mabye a sysfs interface.
393 *
394 * Returns: 0 if OK, -error on failure.
395 **/
396static int scsi_dev_info_list_add_str(char *dev_list)
397{
398 char *vendor, *model, *strflags, *next;
399 char *next_check;
400 int res = 0;
401
402 next = dev_list;
403 if (next && next[0] == '"') {
404 /*
405 * Ignore both the leading and trailing quote.
406 */
407 next++;
408 next_check = ",\"";
409 } else {
410 next_check = ",";
411 }
412
413 /*
414 * For the leading and trailing '"' case, the for loop comes
415 * through the last time with vendor[0] == '\0'.
416 */
417 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
418 && (res == 0); vendor = strsep(&next, ":")) {
419 strflags = NULL;
420 model = strsep(&next, ":");
421 if (model)
422 strflags = strsep(&next, next_check);
423 if (!model || !strflags) {
424 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
cadbd4a5 425 " '%s'\n", __func__, vendor, model,
1da177e4
LT		 426 strflags);
427 res = -EINVAL;
428 } else
429 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
430 model, strflags, 0);
431 }
432 return res;
433}
434
435/**
eb44820c
RL		 436 * get_device_flags - get device specific flags from the dynamic device list.
437 * @sdev: &scsi_device to get flags for
1da177e4
LT		 438 * @vendor: vendor name
439 * @model: model name
440 *
441 * Description:
598fa4b7
JB		 442 * Search the global scsi_dev_info_list (specified by list zero)
443 * for an entry matching @vendor and @model, if found, return the
444 * matching flags value, else return the host or global default
445 * settings. Called during scan time.
1da177e4 446 **/
7f23e146
JB		 447int scsi_get_device_flags(struct scsi_device *sdev,
448 const unsigned char *vendor,
449 const unsigned char *model)
598fa4b7
JB		 450{
451 return scsi_get_device_flags_keyed(sdev, vendor, model,
452 SCSI_DEVINFO_GLOBAL);
453}
454
455
456/**
1acf3b06 457 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
598fa4b7
JB		 458 * @sdev: &scsi_device to get flags for
459 * @vendor: vendor name
460 * @model: model name
461 * @key: list to look up
462 *
463 * Description:
464 * Search the scsi_dev_info_list specified by @key for an entry
465 * matching @vendor and @model, if found, return the matching
466 * flags value, else return the host or global default settings.
467 * Called during scan time.
468 **/
469int scsi_get_device_flags_keyed(struct scsi_device *sdev,
470 const unsigned char *vendor,
471 const unsigned char *model,
472 int key)
1da177e4
LT		 473{
474 struct scsi_dev_info_list *devinfo;
598fa4b7
JB		 475 struct scsi_dev_info_list_table *devinfo_table;
476
477 devinfo_table = scsi_devinfo_lookup_by_key(key);
1da177e4 478
598fa4b7
JB		 479 if (IS_ERR(devinfo_table))
480 return PTR_ERR(devinfo_table);
1da177e4 481
598fa4b7
JB		 482 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
483 dev_info_list) {
1da177e4
LT		 484 if (devinfo->compatible) {
485 /*
486 * Behave like the older version of get_device_flags.
487 */
488 size_t max;
489 /*
490 * XXX why skip leading spaces? If an odd INQUIRY
491 * value, that should have been part of the
492 * scsi_static_device_list[] entry, such as " FOO"
493 * rather than "FOO". Since this code is already
494 * here, and we don't know what device it is
495 * trying to work with, leave it as-is.
496 */
497 max = 8; /* max length of vendor */
498 while ((max > 0) && *vendor == ' ') {
499 max--;
500 vendor++;
501 }
502 /*
503 * XXX removing the following strlen() would be
504 * good, using it means that for a an entry not in
505 * the list, we scan every byte of every vendor
506 * listed in scsi_static_device_list[], and never match
507 * a single one (and still have to compare at
508 * least the first byte of each vendor).
509 */
510 if (memcmp(devinfo->vendor, vendor,
511 min(max, strlen(devinfo->vendor))))
512 continue;
513 /*
514 * Skip spaces again.
515 */
516 max = 16; /* max length of model */
517 while ((max > 0) && *model == ' ') {
518 max--;
519 model++;
520 }
521 if (memcmp(devinfo->model, model,
522 min(max, strlen(devinfo->model))))
523 continue;
524 return devinfo->flags;
525 } else {
526 if (!memcmp(devinfo->vendor, vendor,
527 sizeof(devinfo->vendor)) &&
528 !memcmp(devinfo->model, model,
529 sizeof(devinfo->model)))
530 return devinfo->flags;
531 }
532 }
598fa4b7
JB		 533 /* nothing found, return nothing */
534 if (key != SCSI_DEVINFO_GLOBAL)
535 return 0;
536
537 /* except for the global list, where we have an exception */
538 if (sdev->sdev_bflags)
539 return sdev->sdev_bflags;
540
541 return scsi_default_dev_flags;
1da177e4 542}
598fa4b7 543EXPORT_SYMBOL(scsi_get_device_flags_keyed);
1da177e4
LT		 544
545#ifdef CONFIG_SCSI_PROC_FS
598fa4b7
JB		 546struct double_list {
547 struct list_head *top;
548 struct list_head *bottom;
549};
550
352ced8e 551static int devinfo_seq_show(struct seq_file *m, void *v)
1da177e4 552{
598fa4b7
JB		 553 struct double_list *dl = v;
554 struct scsi_dev_info_list_table *devinfo_table =
555 list_entry(dl->top, struct scsi_dev_info_list_table, node);
352ced8e 556 struct scsi_dev_info_list *devinfo =
598fa4b7
JB		 557 list_entry(dl->bottom, struct scsi_dev_info_list,
558 dev_info_list);
559
560 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
561 devinfo_table->name)
562 seq_printf(m, "[%s]:\n", devinfo_table->name);
1da177e4 563
352ced8e 564 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
598fa4b7 565 devinfo->vendor, devinfo->model, devinfo->flags);
352ced8e
AD		 566 return 0;
567}
568
598fa4b7 569static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
352ced8e 570{
598fa4b7
JB		 571 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
572 loff_t pos = *ppos;
573
574 if (!dl)
575 return NULL;
576
577 list_for_each(dl->top, &scsi_dev_info_list) {
578 struct scsi_dev_info_list_table *devinfo_table =
579 list_entry(dl->top, struct scsi_dev_info_list_table,
580 node);
581 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
582 if (pos-- == 0)
583 return dl;
584 }
585
586 kfree(dl);
587 return NULL;
352ced8e 588}
1da177e4 589
598fa4b7 590static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
352ced8e 591{
598fa4b7
JB		 592 struct double_list *dl = v;
593 struct scsi_dev_info_list_table *devinfo_table =
594 list_entry(dl->top, struct scsi_dev_info_list_table, node);
595
596 ++*ppos;
597 dl->bottom = dl->bottom->next;
598 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
599 dl->top = dl->top->next;
600 if (dl->top == &scsi_dev_info_list) {
601 kfree(dl);
602 return NULL;
603 }
604 devinfo_table = list_entry(dl->top,
605 struct scsi_dev_info_list_table,
606 node);
607 dl->bottom = devinfo_table->scsi_dev_info_list.next;
608 }
609
610 return dl;
352ced8e
AD		 611}
612
613static void devinfo_seq_stop(struct seq_file *m, void *v)
614{
598fa4b7 615 kfree(v);
352ced8e
AD		 616}
617
618static const struct seq_operations scsi_devinfo_seq_ops = {
619 .start = devinfo_seq_start,
620 .next = devinfo_seq_next,
621 .stop = devinfo_seq_stop,
622 .show = devinfo_seq_show,
623};
624
625static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
626{
627 return seq_open(file, &scsi_devinfo_seq_ops);
1da177e4
LT		 628}
629
630/*
eb44820c 631 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
1da177e4 632 *
eb44820c
RL		 633 * Description: Adds a black/white list entry for vendor and model with an
634 * integer value of flag to the scsi device info list.
635 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
1da177e4 636 */
352ced8e
AD		 637static ssize_t proc_scsi_devinfo_write(struct file *file,
638 const char __user *buf,
639 size_t length, loff_t *ppos)
1da177e4
LT		 640{
641 char *buffer;
352ced8e 642 ssize_t err = length;
1da177e4
LT		 643
644 if (!buf || length>PAGE_SIZE)
645 return -EINVAL;
646 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
647 return -ENOMEM;
648 if (copy_from_user(buffer, buf, length)) {
649 err =-EFAULT;
650 goto out;
651 }
652
653 if (length < PAGE_SIZE)
654 buffer[length] = '\0';
655 else if (buffer[PAGE_SIZE-1]) {
656 err = -EINVAL;
657 goto out;
658 }
659
660 scsi_dev_info_list_add_str(buffer);
661
662out:
663 free_page((unsigned long)buffer);
664 return err;
665}
352ced8e
AD		 666
667static const struct file_operations scsi_devinfo_proc_fops = {
668 .owner = THIS_MODULE,
669 .open = proc_scsi_devinfo_open,
670 .read = seq_read,
671 .write = proc_scsi_devinfo_write,
672 .llseek = seq_lseek,
673 .release = seq_release,
674};
1da177e4
LT		 675#endif /* CONFIG_SCSI_PROC_FS */
676
677module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
678MODULE_PARM_DESC(dev_flags,
679 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
680 " list entries for vendor and model with an integer value of flags"
681 " to the scsi device info list");
682
683module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
684MODULE_PARM_DESC(default_dev_flags,
685 "scsi default device flag integer value");
686
687/**
1acf3b06 688 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
1da177e4
LT		 689 **/
690void scsi_exit_devinfo(void)
691{
1da177e4
LT		 692#ifdef CONFIG_SCSI_PROC_FS
693 remove_proc_entry("scsi/device_info", NULL);
694#endif
695
598fa4b7
JB		 696 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
697}
698
699/**
700 * scsi_dev_info_add_list - add a new devinfo list
701 * @key: key of the list to add
702 * @name: Name of the list to add (for /proc/scsi/device_info)
703 *
704 * Adds the requested list, returns zero on success, -EEXIST if the
705 * key is already registered to a list, or other error on failure.
706 */
707int scsi_dev_info_add_list(int key, const char *name)
708{
709 struct scsi_dev_info_list_table *devinfo_table =
710 scsi_devinfo_lookup_by_key(key);
711
712 if (!IS_ERR(devinfo_table))
713 /* list already exists */
714 return -EEXIST;
715
716 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
717
718 if (!devinfo_table)
719 return -ENOMEM;
720
721 INIT_LIST_HEAD(&devinfo_table->node);
722 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
723 devinfo_table->name = name;
724 devinfo_table->key = key;
725 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
726
727 return 0;
728}
729EXPORT_SYMBOL(scsi_dev_info_add_list);
730
731/**
732 * scsi_dev_info_remove_list - destroy an added devinfo list
733 * @key: key of the list to destroy
734 *
735 * Iterates over the entire list first, freeing all the values, then
736 * frees the list itself. Returns 0 on success or -EINVAL if the key
737 * can't be found.
738 */
739int scsi_dev_info_remove_list(int key)
740{
741 struct list_head *lh, *lh_next;
742 struct scsi_dev_info_list_table *devinfo_table =
743 scsi_devinfo_lookup_by_key(key);
744
745 if (IS_ERR(devinfo_table))
746 /* no such list */
747 return -EINVAL;
748
749 /* remove from the master list */
750 list_del(&devinfo_table->node);
751
752 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
753 struct scsi_dev_info_list *devinfo;
754
1da177e4
LT		 755 devinfo = list_entry(lh, struct scsi_dev_info_list,
756 dev_info_list);
757 kfree(devinfo);
758 }
598fa4b7
JB		 759 kfree(devinfo_table);
760
761 return 0;
1da177e4 762}
598fa4b7 763EXPORT_SYMBOL(scsi_dev_info_remove_list);
1da177e4
LT		 764
765/**
c93ff979 766 * scsi_init_devinfo - set up the dynamic device list.
1da177e4
LT		 767 *
768 * Description:
eb44820c 769 * Add command line entries from scsi_dev_flags, then add
1da177e4 770 * scsi_static_device_list entries to the scsi device info list.
eb44820c 771 */
1da177e4
LT		 772int __init scsi_init_devinfo(void)
773{
774#ifdef CONFIG_SCSI_PROC_FS
775 struct proc_dir_entry *p;
776#endif
777 int error, i;
778
598fa4b7 779 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
1da177e4
LT		 780 if (error)
781 return error;
782
598fa4b7
JB		 783 error = scsi_dev_info_list_add_str(scsi_dev_flags);
784 if (error)
785 goto out;
786
1da177e4
LT		 787 for (i = 0; scsi_static_device_list[i].vendor; i++) {
788 error = scsi_dev_info_list_add(1 /* compatibile */,
789 scsi_static_device_list[i].vendor,
790 scsi_static_device_list[i].model,
791 NULL,
792 scsi_static_device_list[i].flags);
793 if (error)
794 goto out;
795 }
796
797#ifdef CONFIG_SCSI_PROC_FS
352ced8e 798 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
1da177e4
LT		 799 if (!p) {
800 error = -ENOMEM;
801 goto out;
802 }
1da177e4
LT		 803#endif /* CONFIG_SCSI_PROC_FS */
804
805 out:
806 if (error)
807 scsi_exit_devinfo();
808 return error;
809}
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