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Merge tag 'mmc-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / scsi_devinfo.c
CommitLineData
b2441318 1// SPDX-License-Identifier: GPL-2.0
1da177e4
LT		 2
3#include <linux/blkdev.h>
4#include <linux/init.h>
5#include <linux/kernel.h>
6#include <linux/module.h>
7#include <linux/moduleparam.h>
8#include <linux/proc_fs.h>
9#include <linux/seq_file.h>
5a0e3ad6 10#include <linux/slab.h>
1da177e4
LT		 11
12#include <scsi/scsi_device.h>
13#include <scsi/scsi_devinfo.h>
14
15#include "scsi_priv.h"
16
17
18/*
19 * scsi_dev_info_list: structure to hold black/white listed devices.
20 */
21struct scsi_dev_info_list {
22 struct list_head dev_info_list;
23 char vendor[8];
24 char model[16];
5ebde469 25 blist_flags_t flags;
1da177e4
LT		 26 unsigned compatible; /* for use with scsi_static_device_list entries */
27};
28
598fa4b7
JB		 29struct scsi_dev_info_list_table {
30 struct list_head node; /* our node for being on the master list */
31 struct list_head scsi_dev_info_list; /* head of dev info list */
32 const char *name; /* name of list for /proc (NULL for global) */
33 int key; /* unique numeric identifier */
34};
35
1da177e4
LT		 36
37static const char spaces[] = " "; /* 16 of them */
5ebde469 38static blist_flags_t scsi_default_dev_flags;
1da177e4
LT		 39static LIST_HEAD(scsi_dev_info_list);
40static char scsi_dev_flags[256];
41
42/*
43 * scsi_static_device_list: deprecated list of devices that require
44 * settings that differ from the default, includes black-listed (broken)
45 * devices. The entries here are added to the tail of scsi_dev_info_list
46 * via scsi_dev_info_list_init.
47 *
48 * Do not add to this list, use the command line or proc interface to add
49 * to the scsi_dev_info_list. This table will eventually go away.
50 */
51static struct {
52 char *vendor;
53 char *model;
54 char *revision; /* revision known to be bad, unused */
5ebde469 55 blist_flags_t flags;
1da177e4
LT		 56} scsi_static_device_list[] __initdata = {
57 /*
58 * The following devices are known not to tolerate a lun != 0 scan
59 * for one reason or another. Some will respond to all luns,
60 * others will lock up.
61 */
62 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */
63 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */
64 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */
65 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */
66 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */
67 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */
f2536cbd
BK		 68 {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */
69 {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */
1da177e4
LT		 70 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */
71 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */
72 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */
73 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */
74 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */
75 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */
76 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */
77 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */
78 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
79 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */
80 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */
81 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */
82 /*
83 * The following causes a failed REQUEST SENSE on lun 1 for
84 * aha152x controller, which causes SCSI code to reset bus.
85 */
86 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
87 /*
88 * The following causes a failed REQUEST SENSE on lun 1 for
89 * aha152x controller, which causes SCSI code to reset bus.
90 */
91 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
92 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */
93 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */
94 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
95 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
96 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
97 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
98 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN},
99 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */
100 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */
101 /*
102 * The following causes a failed REQUEST SENSE on lun 1 for
103 * seagate controller, which causes SCSI code to reset bus.
104 */
105 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
106 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */
107 /*
108 * The following causes a failed REQUEST SENSE on lun 1 for
109 * seagate controller, which causes SCSI code to reset bus.
110 */
111 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */
112 {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */
113 {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */
114 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */
115 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */
116 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */
117 {"NEC", "D3856", "0009", BLIST_NOLUN},
118 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */
119 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */
120 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */
121 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */
122 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */
123 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN},
1c536315 124 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
1da177e4
LT		 125 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */
126 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */
127 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */
128 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */
0d7323c8 129 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */
1da177e4
LT		 130
131 /*
132 * Other types of devices that have special flags.
133 * Note that all USB devices should have the BLIST_INQUIRY_36 flag.
134 */
135 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2},
136 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
137 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
c1a7b647 138 {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES},
1da177e4
LT		 139 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
140 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
80dc3e06 141 {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
98acfc7e 142 {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
1da177e4
LT		 143 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
144 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
145 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
146 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
147 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
4d7db04a
JB		 148 {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
149 BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */
150 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */
1da177e4
LT		 151 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
152 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
153 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
154 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
155 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
507caac7 156 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
1da177e4
LT		 157 {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
158 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
159 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
160 {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
161 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
162 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */
163 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */
3441afc6 164 {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
909cf3e1 165 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_REPORTLUN2},
1da177e4 166 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
80b1c7bd
AM		 167 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
168 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
169 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
1da177e4
LT		 170 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
171 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
172 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36},
173 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36},
627511e3
TY		 174 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
175 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
176 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
d974e426 177 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
56f3d383 178 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES},
f70cfa9b
MC		 179 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
180 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
181 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
182 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
183 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
1da177e4 184 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
9ba0883c 185 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
1da177e4
LT		 186 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
187 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
188 {"HP", "C1557A", NULL, BLIST_FORCELUN},
189 {"HP", "C3323-300", "4269", BLIST_NOTQ},
c3d83368 190 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
f70cfa9b
MC		 191 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
192 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
193 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
194 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
195 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
196 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
197 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
198 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
1da177e4
LT		 199 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
200 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
201 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
202 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
82103978 203 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
1da177e4
LT		 204 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
205 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
206 {"INSITE", "I325VM", NULL, BLIST_KEY},
18990455 207 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
1da177e4
LT		 208 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
209 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
82c43310 210 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
fb2d65d2 211 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES},
1da177e4
LT		 212 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
213 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
214 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
215 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
216 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
217 {"MICROP", "4110", NULL, BLIST_NOTQ},
198a956a 218 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC},
1da177e4
LT		 219 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
220 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
221 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
222 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
223 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
12427d99 224 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
1da177e4
LT		 225 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
226 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
227 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
228 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
229 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
f4fd20bf 230 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
0213436a 231 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
e0b2e597 232 {"Promise", "", NULL, BLIST_SPARSELUN},
fbd83006 233 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
35e9a9f9 234 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
9055082f 235 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
2ffb45c6 236 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
1da177e4
LT		 237 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
238 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
239 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
240 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
56f2a801 241 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
1da177e4
LT		 242 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
243 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
244 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
245 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
48690405 246 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
debf4777 247 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
4aa312b9 248 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
c6b269ba
XVP		 249 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
250 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
251 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
252 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
1da177e4
LT		 253 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
254 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
255 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
256 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
257 {"SUN", "T300", "*", BLIST_SPARSELUN},
258 {"SUN", "T4", "*", BLIST_SPARSELUN},
259 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
5f619c5b 260 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
1da177e4
LT		 261 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
262 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
82103978 263 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
1da177e4
LT		 264 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
265 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
266 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
267 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
268 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
269 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
270 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
271 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
272 { NULL, NULL, NULL, 0 },
273};
274
598fa4b7
JB		 275static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
276{
277 struct scsi_dev_info_list_table *devinfo_table;
278 int found = 0;
279
280 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
281 if (devinfo_table->key == key) {
282 found = 1;
283 break;
284 }
285 if (!found)
286 return ERR_PTR(-EINVAL);
287
288 return devinfo_table;
289}
290
1da177e4
LT		 291/*
292 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
293 * devinfo vendor and model strings.
294 */
295static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
296 char *from, int compatible)
297{
298 size_t from_length;
299
300 from_length = strlen(from);
301 strncpy(to, from, min(to_length, from_length));
302 if (from_length < to_length) {
303 if (compatible) {
304 /*
305 * NUL terminate the string if it is short.
306 */
307 to[from_length] = '\0';
308 } else {
588c902b
HR		 309 /*
310 * space pad the string if it is short.
1da177e4
LT		 311 */
312 strncpy(&to[from_length], spaces,
313 to_length - from_length);
314 }
315 }
316 if (from_length > to_length)
317 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
cadbd4a5 318 __func__, name, from);
1da177e4
LT		 319}
320
321/**
eb44820c
RL		 322 * scsi_dev_info_list_add - add one dev_info list entry.
323 * @compatible: if true, null terminate short strings. Otherwise space pad.
1da177e4
LT		 324 * @vendor: vendor string
325 * @model: model (product) string
326 * @strflags: integer string
eb44820c 327 * @flags: if strflags NULL, use this flag value
1da177e4
LT		 328 *
329 * Description:
588c902b
HR		 330 * Create and add one dev_info entry for @vendor, @model, @strflags or
331 * @flag. If @compatible, add to the tail of the list, do not space
332 * pad, and set devinfo->compatible. The scsi_static_device_list entries
333 * are added with @compatible 1 and @clfags NULL.
1da177e4
LT		 334 *
335 * Returns: 0 OK, -error on failure.
336 **/
337static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
5ebde469 338 char *strflags, blist_flags_t flags)
598fa4b7
JB		 339{
340 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
341 strflags, flags,
342 SCSI_DEVINFO_GLOBAL);
343}
344
345/**
346 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
347 * @compatible: if true, null terminate short strings. Otherwise space pad.
348 * @vendor: vendor string
349 * @model: model (product) string
350 * @strflags: integer string
351 * @flags: if strflags NULL, use this flag value
352 * @key: specify list to use
353 *
354 * Description:
588c902b
HR		 355 * Create and add one dev_info entry for @vendor, @model,
356 * @strflags or @flag in list specified by @key. If @compatible,
357 * add to the tail of the list, do not space pad, and set
358 * devinfo->compatible. The scsi_static_device_list entries are
359 * added with @compatible 1 and @clfags NULL.
598fa4b7
JB		 360 *
361 * Returns: 0 OK, -error on failure.
362 **/
363int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
5ebde469 364 char *strflags, blist_flags_t flags, int key)
1da177e4
LT		 365{
366 struct scsi_dev_info_list *devinfo;
598fa4b7
JB		 367 struct scsi_dev_info_list_table *devinfo_table =
368 scsi_devinfo_lookup_by_key(key);
369
370 if (IS_ERR(devinfo_table))
371 return PTR_ERR(devinfo_table);
1da177e4
LT		 372
373 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
374 if (!devinfo) {
cadbd4a5 375 printk(KERN_ERR "%s: no memory\n", __func__);
1da177e4
LT		 376 return -ENOMEM;
377 }
378
379 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
380 vendor, compatible);
381 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
382 model, compatible);
383
384 if (strflags)
385 devinfo->flags = simple_strtoul(strflags, NULL, 0);
386 else
387 devinfo->flags = flags;
388
389 devinfo->compatible = compatible;
390
391 if (compatible)
598fa4b7
JB		 392 list_add_tail(&devinfo->dev_info_list,
393 &devinfo_table->scsi_dev_info_list);
1da177e4 394 else
598fa4b7
JB		 395 list_add(&devinfo->dev_info_list,
396 &devinfo_table->scsi_dev_info_list);
1da177e4
LT		 397
398 return 0;
399}
598fa4b7 400EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
1da177e4 401
38a039be 402/**
c42b3654 403 * scsi_dev_info_list_find - find a matching dev_info list entry.
b8018b97
HR		 404 * @vendor: full vendor string
405 * @model: full model (product) string
38a039be
PJ		 406 * @key: specify list to use
407 *
408 * Description:
c42b3654 409 * Finds the first dev_info entry matching @vendor, @model
588c902b 410 * in list specified by @key.
38a039be 411 *
c42b3654 412 * Returns: pointer to matching entry, or ERR_PTR on failure.
38a039be 413 **/
c42b3654
AS		 414static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
415 const char *model, int key)
38a039be 416{
c42b3654 417 struct scsi_dev_info_list *devinfo;
38a039be
PJ		 418 struct scsi_dev_info_list_table *devinfo_table =
419 scsi_devinfo_lookup_by_key(key);
b8018b97 420 size_t vmax, mmax, mlen;
b704f70c 421 const char *vskip, *mskip;
38a039be
PJ		 422
423 if (IS_ERR(devinfo_table))
c42b3654 424 return (struct scsi_dev_info_list *) devinfo_table;
38a039be 425
b704f70c
AS		 426 /* Prepare for "compatible" matches */
427
428 /*
429 * XXX why skip leading spaces? If an odd INQUIRY
430 * value, that should have been part of the
431 * scsi_static_device_list[] entry, such as " FOO"
432 * rather than "FOO". Since this code is already
433 * here, and we don't know what device it is
434 * trying to work with, leave it as-is.
435 */
5e7ff2ca 436 vmax = sizeof(devinfo->vendor);
b704f70c
AS		 437 vskip = vendor;
438 while (vmax > 0 && *vskip == ' ') {
439 vmax--;
440 vskip++;
441 }
442 /* Also skip trailing spaces */
443 while (vmax > 0 && vskip[vmax - 1] == ' ')
444 --vmax;
445
5e7ff2ca 446 mmax = sizeof(devinfo->model);
b704f70c
AS		 447 mskip = model;
448 while (mmax > 0 && *mskip == ' ') {
449 mmax--;
450 mskip++;
451 }
452 while (mmax > 0 && mskip[mmax - 1] == ' ')
453 --mmax;
454
38a039be
PJ		 455 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
456 dev_info_list) {
457 if (devinfo->compatible) {
458 /*
b8018b97 459 * vendor strings must be an exact match
38a039be 460 */
b8018b97
HR		 461 if (vmax != strlen(devinfo->vendor) ||
462 memcmp(devinfo->vendor, vskip, vmax))
38a039be 463 continue;
b8018b97
HR		 464
465 /*
466 * @model specifies the full string, and
467 * must be larger or equal to devinfo->model
468 */
469 mlen = strlen(devinfo->model);
470 if (mmax < mlen || memcmp(devinfo->model, mskip, mlen))
38a039be 471 continue;
c42b3654 472 return devinfo;
38a039be
PJ		 473 } else {
474 if (!memcmp(devinfo->vendor, vendor,
588c902b
HR		 475 sizeof(devinfo->vendor)) &&
476 !memcmp(devinfo->model, model,
477 sizeof(devinfo->model)))
c42b3654 478 return devinfo;
38a039be 479 }
38a039be
PJ		 480 }
481
c42b3654
AS		 482 return ERR_PTR(-ENOENT);
483}
484
485/**
486 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
487 * @vendor: vendor string
488 * @model: model (product) string
489 * @key: specify list to use
490 *
491 * Description:
492 * Remove and destroy one dev_info entry for @vendor, @model
493 * in list specified by @key.
494 *
495 * Returns: 0 OK, -error on failure.
496 **/
497int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
498{
499 struct scsi_dev_info_list *found;
38a039be 500
c42b3654
AS		 501 found = scsi_dev_info_list_find(vendor, model, key);
502 if (IS_ERR(found))
503 return PTR_ERR(found);
504
505 list_del(&found->dev_info_list);
506 kfree(found);
507 return 0;
38a039be
PJ		 508}
509EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
510
1da177e4 511/**
eb44820c 512 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
1da177e4
LT		 513 * @dev_list: string of device flags to add
514 *
515 * Description:
588c902b
HR		 516 * Parse dev_list, and add entries to the scsi_dev_info_list.
517 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
518 * dev_list is modified via strsep. Can be called for command line
519 * addition, for proc or mabye a sysfs interface.
1da177e4
LT		 520 *
521 * Returns: 0 if OK, -error on failure.
522 **/
523static int scsi_dev_info_list_add_str(char *dev_list)
524{
525 char *vendor, *model, *strflags, *next;
526 char *next_check;
527 int res = 0;
528
529 next = dev_list;
530 if (next && next[0] == '"') {
531 /*
532 * Ignore both the leading and trailing quote.
533 */
534 next++;
535 next_check = ",\"";
536 } else {
537 next_check = ",";
538 }
539
540 /*
541 * For the leading and trailing '"' case, the for loop comes
542 * through the last time with vendor[0] == '\0'.
543 */
544 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
545 && (res == 0); vendor = strsep(&next, ":")) {
546 strflags = NULL;
547 model = strsep(&next, ":");
548 if (model)
549 strflags = strsep(&next, next_check);
550 if (!model || !strflags) {
551 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
cadbd4a5 552 " '%s'\n", __func__, vendor, model,
1da177e4
LT		 553 strflags);
554 res = -EINVAL;
555 } else
556 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
557 model, strflags, 0);
558 }
559 return res;
560}
561
562/**
eb44820c
RL		 563 * get_device_flags - get device specific flags from the dynamic device list.
564 * @sdev: &scsi_device to get flags for
1da177e4
LT		 565 * @vendor: vendor name
566 * @model: model name
567 *
568 * Description:
598fa4b7
JB		 569 * Search the global scsi_dev_info_list (specified by list zero)
570 * for an entry matching @vendor and @model, if found, return the
571 * matching flags value, else return the host or global default
572 * settings. Called during scan time.
1da177e4 573 **/
5ebde469
HR		 574blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
575 const unsigned char *vendor,
576 const unsigned char *model)
598fa4b7
JB		 577{
578 return scsi_get_device_flags_keyed(sdev, vendor, model,
579 SCSI_DEVINFO_GLOBAL);
580}
581
582
583/**
1acf3b06 584 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
598fa4b7
JB		 585 * @sdev: &scsi_device to get flags for
586 * @vendor: vendor name
587 * @model: model name
588 * @key: list to look up
589 *
590 * Description:
591 * Search the scsi_dev_info_list specified by @key for an entry
592 * matching @vendor and @model, if found, return the matching
593 * flags value, else return the host or global default settings.
594 * Called during scan time.
595 **/
5ebde469 596blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
598fa4b7
JB		 597 const unsigned char *vendor,
598 const unsigned char *model,
599 int key)
1da177e4
LT		 600{
601 struct scsi_dev_info_list *devinfo;
c42b3654 602 int err;
598fa4b7 603
c42b3654
AS		 604 devinfo = scsi_dev_info_list_find(vendor, model, key);
605 if (!IS_ERR(devinfo))
606 return devinfo->flags;
1da177e4 607
c42b3654
AS		 608 err = PTR_ERR(devinfo);
609 if (err != -ENOENT)
610 return err;
1da177e4 611
598fa4b7
JB		 612 /* nothing found, return nothing */
613 if (key != SCSI_DEVINFO_GLOBAL)
614 return 0;
615
616 /* except for the global list, where we have an exception */
617 if (sdev->sdev_bflags)
618 return sdev->sdev_bflags;
619
620 return scsi_default_dev_flags;
1da177e4 621}
598fa4b7 622EXPORT_SYMBOL(scsi_get_device_flags_keyed);
1da177e4
LT		 623
624#ifdef CONFIG_SCSI_PROC_FS
598fa4b7
JB		 625struct double_list {
626 struct list_head *top;
627 struct list_head *bottom;
628};
629
352ced8e 630static int devinfo_seq_show(struct seq_file *m, void *v)
1da177e4 631{
598fa4b7
JB		 632 struct double_list *dl = v;
633 struct scsi_dev_info_list_table *devinfo_table =
634 list_entry(dl->top, struct scsi_dev_info_list_table, node);
352ced8e 635 struct scsi_dev_info_list *devinfo =
598fa4b7
JB		 636 list_entry(dl->bottom, struct scsi_dev_info_list,
637 dev_info_list);
638
639 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
640 devinfo_table->name)
641 seq_printf(m, "[%s]:\n", devinfo_table->name);
1da177e4 642
352ced8e 643 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
598fa4b7 644 devinfo->vendor, devinfo->model, devinfo->flags);
352ced8e
AD		 645 return 0;
646}
647
598fa4b7 648static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
352ced8e 649{
598fa4b7
JB		 650 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
651 loff_t pos = *ppos;
652
653 if (!dl)
654 return NULL;
655
656 list_for_each(dl->top, &scsi_dev_info_list) {
657 struct scsi_dev_info_list_table *devinfo_table =
658 list_entry(dl->top, struct scsi_dev_info_list_table,
659 node);
660 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
661 if (pos-- == 0)
662 return dl;
663 }
664
665 kfree(dl);
666 return NULL;
352ced8e 667}
1da177e4 668
598fa4b7 669static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
352ced8e 670{
598fa4b7
JB		 671 struct double_list *dl = v;
672 struct scsi_dev_info_list_table *devinfo_table =
673 list_entry(dl->top, struct scsi_dev_info_list_table, node);
674
675 ++*ppos;
676 dl->bottom = dl->bottom->next;
677 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
678 dl->top = dl->top->next;
679 if (dl->top == &scsi_dev_info_list) {
680 kfree(dl);
681 return NULL;
682 }
683 devinfo_table = list_entry(dl->top,
684 struct scsi_dev_info_list_table,
685 node);
686 dl->bottom = devinfo_table->scsi_dev_info_list.next;
687 }
688
689 return dl;
352ced8e
AD		 690}
691
692static void devinfo_seq_stop(struct seq_file *m, void *v)
693{
598fa4b7 694 kfree(v);
352ced8e
AD		 695}
696
697static const struct seq_operations scsi_devinfo_seq_ops = {
698 .start = devinfo_seq_start,
699 .next = devinfo_seq_next,
700 .stop = devinfo_seq_stop,
701 .show = devinfo_seq_show,
702};
703
704static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
705{
706 return seq_open(file, &scsi_devinfo_seq_ops);
1da177e4
LT		 707}
708
588c902b 709/*
eb44820c 710 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
1da177e4 711 *
eb44820c
RL		 712 * Description: Adds a black/white list entry for vendor and model with an
713 * integer value of flag to the scsi device info list.
714 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
1da177e4 715 */
352ced8e
AD		 716static ssize_t proc_scsi_devinfo_write(struct file *file,
717 const char __user *buf,
718 size_t length, loff_t *ppos)
1da177e4
LT		 719{
720 char *buffer;
352ced8e 721 ssize_t err = length;
1da177e4
LT		 722
723 if (!buf || length>PAGE_SIZE)
724 return -EINVAL;
725 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
726 return -ENOMEM;
727 if (copy_from_user(buffer, buf, length)) {
728 err =-EFAULT;
729 goto out;
730 }
731
732 if (length < PAGE_SIZE)
733 buffer[length] = '\0';
734 else if (buffer[PAGE_SIZE-1]) {
735 err = -EINVAL;
736 goto out;
737 }
738
739 scsi_dev_info_list_add_str(buffer);
740
741out:
742 free_page((unsigned long)buffer);
743 return err;
744}
352ced8e
AD		 745
746static const struct file_operations scsi_devinfo_proc_fops = {
747 .owner = THIS_MODULE,
748 .open = proc_scsi_devinfo_open,
749 .read = seq_read,
750 .write = proc_scsi_devinfo_write,
751 .llseek = seq_lseek,
752 .release = seq_release,
753};
1da177e4
LT		 754#endif /* CONFIG_SCSI_PROC_FS */
755
756module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
757MODULE_PARM_DESC(dev_flags,
758 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
759 " list entries for vendor and model with an integer value of flags"
760 " to the scsi device info list");
761
762module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
763MODULE_PARM_DESC(default_dev_flags,
764 "scsi default device flag integer value");
765
766/**
1acf3b06 767 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
1da177e4
LT		 768 **/
769void scsi_exit_devinfo(void)
770{
1da177e4
LT		 771#ifdef CONFIG_SCSI_PROC_FS
772 remove_proc_entry("scsi/device_info", NULL);
773#endif
774
598fa4b7
JB		 775 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
776}
777
778/**
779 * scsi_dev_info_add_list - add a new devinfo list
780 * @key: key of the list to add
781 * @name: Name of the list to add (for /proc/scsi/device_info)
782 *
783 * Adds the requested list, returns zero on success, -EEXIST if the
784 * key is already registered to a list, or other error on failure.
785 */
786int scsi_dev_info_add_list(int key, const char *name)
787{
788 struct scsi_dev_info_list_table *devinfo_table =
789 scsi_devinfo_lookup_by_key(key);
790
791 if (!IS_ERR(devinfo_table))
792 /* list already exists */
793 return -EEXIST;
794
795 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
796
797 if (!devinfo_table)
798 return -ENOMEM;
799
800 INIT_LIST_HEAD(&devinfo_table->node);
801 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
802 devinfo_table->name = name;
803 devinfo_table->key = key;
804 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
805
806 return 0;
807}
808EXPORT_SYMBOL(scsi_dev_info_add_list);
809
810/**
811 * scsi_dev_info_remove_list - destroy an added devinfo list
812 * @key: key of the list to destroy
813 *
814 * Iterates over the entire list first, freeing all the values, then
815 * frees the list itself. Returns 0 on success or -EINVAL if the key
816 * can't be found.
817 */
818int scsi_dev_info_remove_list(int key)
819{
820 struct list_head *lh, *lh_next;
821 struct scsi_dev_info_list_table *devinfo_table =
822 scsi_devinfo_lookup_by_key(key);
823
824 if (IS_ERR(devinfo_table))
825 /* no such list */
826 return -EINVAL;
827
828 /* remove from the master list */
829 list_del(&devinfo_table->node);
830
831 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
832 struct scsi_dev_info_list *devinfo;
833
1da177e4
LT		 834 devinfo = list_entry(lh, struct scsi_dev_info_list,
835 dev_info_list);
836 kfree(devinfo);
837 }
598fa4b7
JB		 838 kfree(devinfo_table);
839
840 return 0;
1da177e4 841}
598fa4b7 842EXPORT_SYMBOL(scsi_dev_info_remove_list);
1da177e4
LT		 843
844/**
c93ff979 845 * scsi_init_devinfo - set up the dynamic device list.
1da177e4
LT		 846 *
847 * Description:
588c902b
HR		 848 * Add command line entries from scsi_dev_flags, then add
849 * scsi_static_device_list entries to the scsi device info list.
eb44820c 850 */
1da177e4
LT		 851int __init scsi_init_devinfo(void)
852{
853#ifdef CONFIG_SCSI_PROC_FS
854 struct proc_dir_entry *p;
855#endif
856 int error, i;
857
598fa4b7 858 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
1da177e4
LT		 859 if (error)
860 return error;
861
598fa4b7
JB		 862 error = scsi_dev_info_list_add_str(scsi_dev_flags);
863 if (error)
864 goto out;
865
1da177e4
LT		 866 for (i = 0; scsi_static_device_list[i].vendor; i++) {
867 error = scsi_dev_info_list_add(1 /* compatibile */,
868 scsi_static_device_list[i].vendor,
869 scsi_static_device_list[i].model,
870 NULL,
871 scsi_static_device_list[i].flags);
872 if (error)
873 goto out;
874 }
875
876#ifdef CONFIG_SCSI_PROC_FS
352ced8e 877 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
1da177e4
LT		 878 if (!p) {
879 error = -ENOMEM;
880 goto out;
881 }
1da177e4
LT		 882#endif /* CONFIG_SCSI_PROC_FS */
883
884 out:
885 if (error)
886 scsi_exit_devinfo();
887 return error;
888}
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