blob: 37af178b2d1743b0b3d3da54f8a6880faaa602ce [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001
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>
9
10#include <scsi/scsi_device.h>
11#include <scsi/scsi_devinfo.h>
12
13#include "scsi_priv.h"
14
15
16/*
17 * scsi_dev_info_list: structure to hold black/white listed devices.
18 */
19struct scsi_dev_info_list {
20 struct list_head dev_info_list;
21 char vendor[8];
22 char model[16];
23 unsigned flags;
24 unsigned compatible; /* for use with scsi_static_device_list entries */
25};
26
James Bottomley598fa4b2009-06-17 15:01:58 -040027struct scsi_dev_info_list_table {
28 struct list_head node; /* our node for being on the master list */
29 struct list_head scsi_dev_info_list; /* head of dev info list */
30 const char *name; /* name of list for /proc (NULL for global) */
31 int key; /* unique numeric identifier */
32};
33
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
35static const char spaces[] = " "; /* 16 of them */
36static unsigned scsi_default_dev_flags;
37static LIST_HEAD(scsi_dev_info_list);
38static char scsi_dev_flags[256];
39
40/*
41 * scsi_static_device_list: deprecated list of devices that require
42 * settings that differ from the default, includes black-listed (broken)
43 * devices. The entries here are added to the tail of scsi_dev_info_list
44 * via scsi_dev_info_list_init.
45 *
46 * Do not add to this list, use the command line or proc interface to add
47 * to the scsi_dev_info_list. This table will eventually go away.
48 */
49static struct {
50 char *vendor;
51 char *model;
52 char *revision; /* revision known to be bad, unused */
53 unsigned flags;
54} scsi_static_device_list[] __initdata = {
55 /*
56 * The following devices are known not to tolerate a lun != 0 scan
57 * for one reason or another. Some will respond to all luns,
58 * others will lock up.
59 */
60 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */
61 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */
62 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */
63 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */
64 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */
65 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */
Brian Kingf2536cb2006-04-26 13:48:11 -050066 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */
67 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */
69 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */
70 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */
71 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */
72 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */
73 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */
74 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */
75 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */
76 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
77 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */
78 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */
79 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */
80 /*
81 * The following causes a failed REQUEST SENSE on lun 1 for
82 * aha152x controller, which causes SCSI code to reset bus.
83 */
84 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
85 /*
86 * The following causes a failed REQUEST SENSE on lun 1 for
87 * aha152x controller, which causes SCSI code to reset bus.
88 */
89 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
90 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */
91 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */
92 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
93 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
94 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
95 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
96 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN},
97 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */
98 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */
99 /*
100 * The following causes a failed REQUEST SENSE on lun 1 for
101 * seagate controller, which causes SCSI code to reset bus.
102 */
103 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
104 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */
105 /*
106 * The following causes a failed REQUEST SENSE on lun 1 for
107 * seagate controller, which causes SCSI code to reset bus.
108 */
109 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */
110 {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */
111 {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */
112 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */
113 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */
114 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */
115 {"NEC", "D3856", "0009", BLIST_NOLUN},
116 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */
117 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */
118 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */
119 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */
120 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */
121 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN},
James Bottomley1c536312005-09-12 09:15:14 -0500122 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */
124 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */
125 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */
126 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */
Dave Jones0d7323c2005-08-08 19:01:43 -0400127 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
129 /*
130 * Other types of devices that have special flags.
131 * Note that all USB devices should have the BLIST_INQUIRY_36 flag.
132 */
133 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2},
134 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
135 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
136 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
137 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
Matthew Wilcox80dc3e02007-07-05 08:57:50 -0600138 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
Matthew Wilcox98acfc72006-03-01 12:04:46 -0700139 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
141 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
142 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
143 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
144 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
James Bottomley4d7db042006-03-31 20:07:45 -0600145 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
146 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */
147 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
149 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
150 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
151 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
152 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
James Bottomley507caac2005-08-09 12:57:11 -0500153 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
155 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
156 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
157 {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
158 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
159 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */
160 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */
Mike Christie3441afc2006-09-30 20:42:28 -0400161 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
163 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
akpm@linux-foundation.org80b1c7bd2007-07-27 13:30:02 -0700164 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
165 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
166 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
168 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
169 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36},
170 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36},
Takahiro Yasui627511e2009-11-10 16:22:19 -0500171 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
172 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
173 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
174 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
Mike Christief70cfa92006-09-30 20:42:31 -0400175 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
176 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
177 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
178 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
179 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
Hannes Reinecke9ba08832006-06-22 09:19:51 +0200181 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
183 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
184 {"HP", "C1557A", NULL, BLIST_FORCELUN},
185 {"HP", "C3323-300", "4269", BLIST_NOTQ},
Thomas Bogendoerferc3d83362006-05-16 06:38:29 +0200186 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
Mike Christief70cfa92006-09-30 20:42:31 -0400187 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
188 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
189 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
190 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
191 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
192 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
193 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
194 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
196 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
197 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
198 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
199 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
200 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
201 {"INSITE", "I325VM", NULL, BLIST_KEY},
202 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
203 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
204 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
205 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
206 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
207 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
208 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
209 {"MICROP", "4110", NULL, BLIST_NOTQ},
210 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
211 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
212 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
213 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
214 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
Mike Christie12427d92006-09-30 20:42:30 -0400215 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
217 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
218 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
Karl Magnus Kolstoef4fd20b2005-10-17 10:05:42 +0200221 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
Ed Line0b2e592007-05-09 20:50:33 -0800222 {"Promise", "", NULL, BLIST_SPARSELUN},
Matthew Wilcox2ffb45c2007-07-26 11:39:46 -0400223 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
225 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
226 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
227 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
228 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
229 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
230 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
231 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
Anton Blanchard48690402005-09-06 18:08:14 +1000232 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
ILLES, Martondebf4772009-01-12 15:45:52 +0100233 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
James Bottomley4aa312b2009-06-13 09:21:43 -0500234 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
236 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
237 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
238 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
239 {"SUN", "T300", "*", BLIST_SPARSELUN},
240 {"SUN", "T4", "*", BLIST_SPARSELUN},
241 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
Mike Christie5f619c52006-09-30 20:42:29 -0400242 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
244 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
245 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
246 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
247 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
248 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
249 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
250 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
251 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
252 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
253 { NULL, NULL, NULL, 0 },
254};
255
James Bottomley598fa4b2009-06-17 15:01:58 -0400256static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
257{
258 struct scsi_dev_info_list_table *devinfo_table;
259 int found = 0;
260
261 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
262 if (devinfo_table->key == key) {
263 found = 1;
264 break;
265 }
266 if (!found)
267 return ERR_PTR(-EINVAL);
268
269 return devinfo_table;
270}
271
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272/*
273 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
274 * devinfo vendor and model strings.
275 */
276static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
277 char *from, int compatible)
278{
279 size_t from_length;
280
281 from_length = strlen(from);
282 strncpy(to, from, min(to_length, from_length));
283 if (from_length < to_length) {
284 if (compatible) {
285 /*
286 * NUL terminate the string if it is short.
287 */
288 to[from_length] = '\0';
289 } else {
290 /*
291 * space pad the string if it is short.
292 */
293 strncpy(&to[from_length], spaces,
294 to_length - from_length);
295 }
296 }
297 if (from_length > to_length)
298 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -0700299 __func__, name, from);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300}
301
302/**
Rob Landleyeb448202007-11-03 13:30:39 -0500303 * scsi_dev_info_list_add - add one dev_info list entry.
304 * @compatible: if true, null terminate short strings. Otherwise space pad.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 * @vendor: vendor string
306 * @model: model (product) string
307 * @strflags: integer string
Rob Landleyeb448202007-11-03 13:30:39 -0500308 * @flags: if strflags NULL, use this flag value
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 *
310 * Description:
311 * Create and add one dev_info entry for @vendor, @model, @strflags or
312 * @flag. If @compatible, add to the tail of the list, do not space
313 * pad, and set devinfo->compatible. The scsi_static_device_list entries
314 * are added with @compatible 1 and @clfags NULL.
315 *
316 * Returns: 0 OK, -error on failure.
317 **/
318static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
319 char *strflags, int flags)
320{
James Bottomley598fa4b2009-06-17 15:01:58 -0400321 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
322 strflags, flags,
323 SCSI_DEVINFO_GLOBAL);
324}
325
326/**
327 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
328 * @compatible: if true, null terminate short strings. Otherwise space pad.
329 * @vendor: vendor string
330 * @model: model (product) string
331 * @strflags: integer string
332 * @flags: if strflags NULL, use this flag value
333 * @key: specify list to use
334 *
335 * Description:
336 * Create and add one dev_info entry for @vendor, @model,
337 * @strflags or @flag in list specified by @key. If @compatible,
338 * add to the tail of the list, do not space pad, and set
339 * devinfo->compatible. The scsi_static_device_list entries are
340 * added with @compatible 1 and @clfags NULL.
341 *
342 * Returns: 0 OK, -error on failure.
343 **/
344int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
345 char *strflags, int flags, int key)
346{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 struct scsi_dev_info_list *devinfo;
James Bottomley598fa4b2009-06-17 15:01:58 -0400348 struct scsi_dev_info_list_table *devinfo_table =
349 scsi_devinfo_lookup_by_key(key);
350
351 if (IS_ERR(devinfo_table))
352 return PTR_ERR(devinfo_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353
354 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
355 if (!devinfo) {
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -0700356 printk(KERN_ERR "%s: no memory\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 return -ENOMEM;
358 }
359
360 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
361 vendor, compatible);
362 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
363 model, compatible);
364
365 if (strflags)
366 devinfo->flags = simple_strtoul(strflags, NULL, 0);
367 else
368 devinfo->flags = flags;
369
370 devinfo->compatible = compatible;
371
372 if (compatible)
James Bottomley598fa4b2009-06-17 15:01:58 -0400373 list_add_tail(&devinfo->dev_info_list,
374 &devinfo_table->scsi_dev_info_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 else
James Bottomley598fa4b2009-06-17 15:01:58 -0400376 list_add(&devinfo->dev_info_list,
377 &devinfo_table->scsi_dev_info_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
379 return 0;
380}
James Bottomley598fa4b2009-06-17 15:01:58 -0400381EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382
383/**
Rob Landleyeb448202007-11-03 13:30:39 -0500384 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 * @dev_list: string of device flags to add
386 *
387 * Description:
388 * Parse dev_list, and add entries to the scsi_dev_info_list.
389 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
390 * dev_list is modified via strsep. Can be called for command line
391 * addition, for proc or mabye a sysfs interface.
392 *
393 * Returns: 0 if OK, -error on failure.
394 **/
395static int scsi_dev_info_list_add_str(char *dev_list)
396{
397 char *vendor, *model, *strflags, *next;
398 char *next_check;
399 int res = 0;
400
401 next = dev_list;
402 if (next && next[0] == '"') {
403 /*
404 * Ignore both the leading and trailing quote.
405 */
406 next++;
407 next_check = ",\"";
408 } else {
409 next_check = ",";
410 }
411
412 /*
413 * For the leading and trailing '"' case, the for loop comes
414 * through the last time with vendor[0] == '\0'.
415 */
416 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
417 && (res == 0); vendor = strsep(&next, ":")) {
418 strflags = NULL;
419 model = strsep(&next, ":");
420 if (model)
421 strflags = strsep(&next, next_check);
422 if (!model || !strflags) {
423 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
Harvey Harrisoncadbd4a2008-07-03 23:47:27 -0700424 " '%s'\n", __func__, vendor, model,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 strflags);
426 res = -EINVAL;
427 } else
428 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
429 model, strflags, 0);
430 }
431 return res;
432}
433
434/**
Rob Landleyeb448202007-11-03 13:30:39 -0500435 * get_device_flags - get device specific flags from the dynamic device list.
436 * @sdev: &scsi_device to get flags for
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 * @vendor: vendor name
438 * @model: model name
439 *
440 * Description:
James Bottomley598fa4b2009-06-17 15:01:58 -0400441 * Search the global scsi_dev_info_list (specified by list zero)
442 * for an entry matching @vendor and @model, if found, return the
443 * matching flags value, else return the host or global default
444 * settings. Called during scan time.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 **/
James Bottomley7f23e142005-12-01 12:50:13 -0600446int scsi_get_device_flags(struct scsi_device *sdev,
447 const unsigned char *vendor,
448 const unsigned char *model)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449{
James Bottomley598fa4b2009-06-17 15:01:58 -0400450 return scsi_get_device_flags_keyed(sdev, vendor, model,
451 SCSI_DEVINFO_GLOBAL);
452}
453
454
455/**
Randy Dunlap1acf3b02009-11-17 14:53:20 -0800456 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
James Bottomley598fa4b2009-06-17 15:01:58 -0400457 * @sdev: &scsi_device to get flags for
458 * @vendor: vendor name
459 * @model: model name
460 * @key: list to look up
461 *
462 * Description:
463 * Search the scsi_dev_info_list specified by @key for an entry
464 * matching @vendor and @model, if found, return the matching
465 * flags value, else return the host or global default settings.
466 * Called during scan time.
467 **/
468int scsi_get_device_flags_keyed(struct scsi_device *sdev,
469 const unsigned char *vendor,
470 const unsigned char *model,
471 int key)
472{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 struct scsi_dev_info_list *devinfo;
James Bottomley598fa4b2009-06-17 15:01:58 -0400474 struct scsi_dev_info_list_table *devinfo_table;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
James Bottomley598fa4b2009-06-17 15:01:58 -0400476 devinfo_table = scsi_devinfo_lookup_by_key(key);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477
James Bottomley598fa4b2009-06-17 15:01:58 -0400478 if (IS_ERR(devinfo_table))
479 return PTR_ERR(devinfo_table);
480
481 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
482 dev_info_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 if (devinfo->compatible) {
484 /*
485 * Behave like the older version of get_device_flags.
486 */
487 size_t max;
488 /*
489 * XXX why skip leading spaces? If an odd INQUIRY
490 * value, that should have been part of the
491 * scsi_static_device_list[] entry, such as " FOO"
492 * rather than "FOO". Since this code is already
493 * here, and we don't know what device it is
494 * trying to work with, leave it as-is.
495 */
496 max = 8; /* max length of vendor */
497 while ((max > 0) && *vendor == ' ') {
498 max--;
499 vendor++;
500 }
501 /*
502 * XXX removing the following strlen() would be
503 * good, using it means that for a an entry not in
504 * the list, we scan every byte of every vendor
505 * listed in scsi_static_device_list[], and never match
506 * a single one (and still have to compare at
507 * least the first byte of each vendor).
508 */
509 if (memcmp(devinfo->vendor, vendor,
510 min(max, strlen(devinfo->vendor))))
511 continue;
512 /*
513 * Skip spaces again.
514 */
515 max = 16; /* max length of model */
516 while ((max > 0) && *model == ' ') {
517 max--;
518 model++;
519 }
520 if (memcmp(devinfo->model, model,
521 min(max, strlen(devinfo->model))))
522 continue;
523 return devinfo->flags;
524 } else {
525 if (!memcmp(devinfo->vendor, vendor,
526 sizeof(devinfo->vendor)) &&
527 !memcmp(devinfo->model, model,
528 sizeof(devinfo->model)))
529 return devinfo->flags;
530 }
531 }
James Bottomley598fa4b2009-06-17 15:01:58 -0400532 /* nothing found, return nothing */
533 if (key != SCSI_DEVINFO_GLOBAL)
534 return 0;
535
536 /* except for the global list, where we have an exception */
537 if (sdev->sdev_bflags)
538 return sdev->sdev_bflags;
539
540 return scsi_default_dev_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541}
James Bottomley598fa4b2009-06-17 15:01:58 -0400542EXPORT_SYMBOL(scsi_get_device_flags_keyed);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
544#ifdef CONFIG_SCSI_PROC_FS
James Bottomley598fa4b2009-06-17 15:01:58 -0400545struct double_list {
546 struct list_head *top;
547 struct list_head *bottom;
548};
549
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700550static int devinfo_seq_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551{
James Bottomley598fa4b2009-06-17 15:01:58 -0400552 struct double_list *dl = v;
553 struct scsi_dev_info_list_table *devinfo_table =
554 list_entry(dl->top, struct scsi_dev_info_list_table, node);
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700555 struct scsi_dev_info_list *devinfo =
James Bottomley598fa4b2009-06-17 15:01:58 -0400556 list_entry(dl->bottom, struct scsi_dev_info_list,
557 dev_info_list);
558
559 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
560 devinfo_table->name)
561 seq_printf(m, "[%s]:\n", devinfo_table->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700563 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
James Bottomley598fa4b2009-06-17 15:01:58 -0400564 devinfo->vendor, devinfo->model, devinfo->flags);
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700565 return 0;
566}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567
James Bottomley598fa4b2009-06-17 15:01:58 -0400568static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700569{
James Bottomley598fa4b2009-06-17 15:01:58 -0400570 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
571 loff_t pos = *ppos;
572
573 if (!dl)
574 return NULL;
575
576 list_for_each(dl->top, &scsi_dev_info_list) {
577 struct scsi_dev_info_list_table *devinfo_table =
578 list_entry(dl->top, struct scsi_dev_info_list_table,
579 node);
580 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
581 if (pos-- == 0)
582 return dl;
583 }
584
585 kfree(dl);
586 return NULL;
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700587}
588
James Bottomley598fa4b2009-06-17 15:01:58 -0400589static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700590{
James Bottomley598fa4b2009-06-17 15:01:58 -0400591 struct double_list *dl = v;
592 struct scsi_dev_info_list_table *devinfo_table =
593 list_entry(dl->top, struct scsi_dev_info_list_table, node);
594
595 ++*ppos;
596 dl->bottom = dl->bottom->next;
597 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
598 dl->top = dl->top->next;
599 if (dl->top == &scsi_dev_info_list) {
600 kfree(dl);
601 return NULL;
602 }
603 devinfo_table = list_entry(dl->top,
604 struct scsi_dev_info_list_table,
605 node);
606 dl->bottom = devinfo_table->scsi_dev_info_list.next;
607 }
608
609 return dl;
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700610}
611
612static void devinfo_seq_stop(struct seq_file *m, void *v)
613{
James Bottomley598fa4b2009-06-17 15:01:58 -0400614 kfree(v);
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700615}
616
617static const struct seq_operations scsi_devinfo_seq_ops = {
618 .start = devinfo_seq_start,
619 .next = devinfo_seq_next,
620 .stop = devinfo_seq_stop,
621 .show = devinfo_seq_show,
622};
623
624static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
625{
626 return seq_open(file, &scsi_devinfo_seq_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627}
628
629/*
Rob Landleyeb448202007-11-03 13:30:39 -0500630 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 *
Rob Landleyeb448202007-11-03 13:30:39 -0500632 * Description: Adds a black/white list entry for vendor and model with an
633 * integer value of flag to the scsi device info list.
634 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 */
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700636static ssize_t proc_scsi_devinfo_write(struct file *file,
637 const char __user *buf,
638 size_t length, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639{
640 char *buffer;
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700641 ssize_t err = length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642
643 if (!buf || length>PAGE_SIZE)
644 return -EINVAL;
645 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
646 return -ENOMEM;
647 if (copy_from_user(buffer, buf, length)) {
648 err =-EFAULT;
649 goto out;
650 }
651
652 if (length < PAGE_SIZE)
653 buffer[length] = '\0';
654 else if (buffer[PAGE_SIZE-1]) {
655 err = -EINVAL;
656 goto out;
657 }
658
659 scsi_dev_info_list_add_str(buffer);
660
661out:
662 free_page((unsigned long)buffer);
663 return err;
664}
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700665
666static const struct file_operations scsi_devinfo_proc_fops = {
667 .owner = THIS_MODULE,
668 .open = proc_scsi_devinfo_open,
669 .read = seq_read,
670 .write = proc_scsi_devinfo_write,
671 .llseek = seq_lseek,
672 .release = seq_release,
673};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674#endif /* CONFIG_SCSI_PROC_FS */
675
676module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
677MODULE_PARM_DESC(dev_flags,
678 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
679 " list entries for vendor and model with an integer value of flags"
680 " to the scsi device info list");
681
682module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
683MODULE_PARM_DESC(default_dev_flags,
684 "scsi default device flag integer value");
685
686/**
Randy Dunlap1acf3b02009-11-17 14:53:20 -0800687 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 **/
689void scsi_exit_devinfo(void)
690{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691#ifdef CONFIG_SCSI_PROC_FS
692 remove_proc_entry("scsi/device_info", NULL);
693#endif
694
James Bottomley598fa4b2009-06-17 15:01:58 -0400695 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
696}
697
698/**
699 * scsi_dev_info_add_list - add a new devinfo list
700 * @key: key of the list to add
701 * @name: Name of the list to add (for /proc/scsi/device_info)
702 *
703 * Adds the requested list, returns zero on success, -EEXIST if the
704 * key is already registered to a list, or other error on failure.
705 */
706int scsi_dev_info_add_list(int key, const char *name)
707{
708 struct scsi_dev_info_list_table *devinfo_table =
709 scsi_devinfo_lookup_by_key(key);
710
711 if (!IS_ERR(devinfo_table))
712 /* list already exists */
713 return -EEXIST;
714
715 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
716
717 if (!devinfo_table)
718 return -ENOMEM;
719
720 INIT_LIST_HEAD(&devinfo_table->node);
721 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
722 devinfo_table->name = name;
723 devinfo_table->key = key;
724 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
725
726 return 0;
727}
728EXPORT_SYMBOL(scsi_dev_info_add_list);
729
730/**
731 * scsi_dev_info_remove_list - destroy an added devinfo list
732 * @key: key of the list to destroy
733 *
734 * Iterates over the entire list first, freeing all the values, then
735 * frees the list itself. Returns 0 on success or -EINVAL if the key
736 * can't be found.
737 */
738int scsi_dev_info_remove_list(int key)
739{
740 struct list_head *lh, *lh_next;
741 struct scsi_dev_info_list_table *devinfo_table =
742 scsi_devinfo_lookup_by_key(key);
743
744 if (IS_ERR(devinfo_table))
745 /* no such list */
746 return -EINVAL;
747
748 /* remove from the master list */
749 list_del(&devinfo_table->node);
750
751 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
752 struct scsi_dev_info_list *devinfo;
753
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 devinfo = list_entry(lh, struct scsi_dev_info_list,
755 dev_info_list);
756 kfree(devinfo);
757 }
James Bottomley598fa4b2009-06-17 15:01:58 -0400758 kfree(devinfo_table);
759
760 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761}
James Bottomley598fa4b2009-06-17 15:01:58 -0400762EXPORT_SYMBOL(scsi_dev_info_remove_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763
764/**
Randy Dunlapc93ff972007-11-15 17:07:28 -0800765 * scsi_init_devinfo - set up the dynamic device list.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 *
767 * Description:
Rob Landleyeb448202007-11-03 13:30:39 -0500768 * Add command line entries from scsi_dev_flags, then add
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 * scsi_static_device_list entries to the scsi device info list.
Rob Landleyeb448202007-11-03 13:30:39 -0500770 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771int __init scsi_init_devinfo(void)
772{
773#ifdef CONFIG_SCSI_PROC_FS
774 struct proc_dir_entry *p;
775#endif
776 int error, i;
777
James Bottomley598fa4b2009-06-17 15:01:58 -0400778 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779 if (error)
780 return error;
781
James Bottomley598fa4b2009-06-17 15:01:58 -0400782 error = scsi_dev_info_list_add_str(scsi_dev_flags);
783 if (error)
784 goto out;
785
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 for (i = 0; scsi_static_device_list[i].vendor; i++) {
787 error = scsi_dev_info_list_add(1 /* compatibile */,
788 scsi_static_device_list[i].vendor,
789 scsi_static_device_list[i].model,
790 NULL,
791 scsi_static_device_list[i].flags);
792 if (error)
793 goto out;
794 }
795
796#ifdef CONFIG_SCSI_PROC_FS
Alexey Dobriyan352ced82008-04-29 01:01:55 -0700797 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 if (!p) {
799 error = -ENOMEM;
800 goto out;
801 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802#endif /* CONFIG_SCSI_PROC_FS */
803
804 out:
805 if (error)
806 scsi_exit_devinfo();
807 return error;
808}