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UBUNTU: Ubuntu-4.13.0-45.50
[mirror_ubuntu-artful-kernel.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
AM		 165 {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
166 {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
167 {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
1da177e4
LT		 168 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
169 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
170 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36},
171 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36},
627511e3
TY		 172 {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
173 {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
174 {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
d974e426 175 {"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
627511e3 176 {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
f70cfa9b
MC		 177 {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
178 {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
179 {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
180 {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
181 {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
1da177e4 182 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
9ba0883c 183 {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
1da177e4
LT		 184 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
185 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
186 {"HP", "C1557A", NULL, BLIST_FORCELUN},
187 {"HP", "C3323-300", "4269", BLIST_NOTQ},
c3d83368 188 {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
f70cfa9b
MC		 189 {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
190 {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
191 {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
192 {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
193 {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
194 {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
195 {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
196 {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
1da177e4
LT		 197 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
198 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
199 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
200 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
82103978 201 {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
1da177e4
LT		 202 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
203 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
204 {"INSITE", "I325VM", NULL, BLIST_KEY},
18990455 205 {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
1da177e4
LT		 206 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
207 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
82c43310 208 {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
fb2d65d2 209 {"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES},
1da177e4
LT		 210 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
211 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
212 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
213 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
214 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
215 {"MICROP", "4110", NULL, BLIST_NOTQ},
198a956a 216 {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC},
1da177e4
LT		 217 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
218 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
219 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
221 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
12427d99 222 {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
1da177e4
LT		 223 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
224 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
225 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
226 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
227 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
f4fd20bf 228 {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
0213436a 229 {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
e0b2e597 230 {"Promise", "", NULL, BLIST_SPARSELUN},
fbd83006 231 {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
35e9a9f9 232 {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
9055082f 233 {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
2ffb45c6 234 {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
1da177e4
LT		 235 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
236 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
237 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
238 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
56f2a801 239 {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
1da177e4
LT		 240 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
241 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
242 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
243 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
48690405 244 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
debf4777 245 {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
4aa312b9 246 {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
c6b269ba
XVP		 247 {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
248 {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
249 {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
250 {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
1da177e4
LT		 251 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
252 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
253 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
254 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
255 {"SUN", "T300", "*", BLIST_SPARSELUN},
256 {"SUN", "T4", "*", BLIST_SPARSELUN},
257 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
5f619c5b 258 {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
1da177e4
LT		 259 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
260 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
82103978 261 {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
1da177e4
LT		 262 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
263 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
264 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
265 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
266 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
267 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
268 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
269 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
270 { NULL, NULL, NULL, 0 },
271};
272
598fa4b7
JB		 273static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
274{
275 struct scsi_dev_info_list_table *devinfo_table;
276 int found = 0;
277
278 list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
279 if (devinfo_table->key == key) {
280 found = 1;
281 break;
282 }
283 if (!found)
284 return ERR_PTR(-EINVAL);
285
286 return devinfo_table;
287}
288
1da177e4
LT		 289/*
290 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
291 * devinfo vendor and model strings.
292 */
293static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
294 char *from, int compatible)
295{
296 size_t from_length;
297
298 from_length = strlen(from);
299 strncpy(to, from, min(to_length, from_length));
300 if (from_length < to_length) {
301 if (compatible) {
302 /*
303 * NUL terminate the string if it is short.
304 */
305 to[from_length] = '\0';
306 } else {
307 /*
308 * space pad the string if it is short.
309 */
310 strncpy(&to[from_length], spaces,
311 to_length - from_length);
312 }
313 }
314 if (from_length > to_length)
315 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
cadbd4a5 316 __func__, name, from);
1da177e4
LT		 317}
318
319/**
eb44820c
RL		 320 * scsi_dev_info_list_add - add one dev_info list entry.
321 * @compatible: if true, null terminate short strings. Otherwise space pad.
1da177e4
LT		 322 * @vendor: vendor string
323 * @model: model (product) string
324 * @strflags: integer string
eb44820c 325 * @flags: if strflags NULL, use this flag value
1da177e4
LT		 326 *
327 * Description:
328 * Create and add one dev_info entry for @vendor, @model, @strflags or
329 * @flag. If @compatible, add to the tail of the list, do not space
330 * pad, and set devinfo->compatible. The scsi_static_device_list entries
331 * are added with @compatible 1 and @clfags NULL.
332 *
333 * Returns: 0 OK, -error on failure.
334 **/
335static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
336 char *strflags, int flags)
598fa4b7
JB		 337{
338 return scsi_dev_info_list_add_keyed(compatible, vendor, model,
339 strflags, flags,
340 SCSI_DEVINFO_GLOBAL);
341}
342
343/**
344 * scsi_dev_info_list_add_keyed - add one dev_info list entry.
345 * @compatible: if true, null terminate short strings. Otherwise space pad.
346 * @vendor: vendor string
347 * @model: model (product) string
348 * @strflags: integer string
349 * @flags: if strflags NULL, use this flag value
350 * @key: specify list to use
351 *
352 * Description:
353 * Create and add one dev_info entry for @vendor, @model,
354 * @strflags or @flag in list specified by @key. If @compatible,
355 * add to the tail of the list, do not space pad, and set
356 * devinfo->compatible. The scsi_static_device_list entries are
357 * added with @compatible 1 and @clfags NULL.
358 *
359 * Returns: 0 OK, -error on failure.
360 **/
361int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
362 char *strflags, int flags, int key)
1da177e4
LT		 363{
364 struct scsi_dev_info_list *devinfo;
598fa4b7
JB		 365 struct scsi_dev_info_list_table *devinfo_table =
366 scsi_devinfo_lookup_by_key(key);
367
368 if (IS_ERR(devinfo_table))
369 return PTR_ERR(devinfo_table);
1da177e4
LT		 370
371 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
372 if (!devinfo) {
cadbd4a5 373 printk(KERN_ERR "%s: no memory\n", __func__);
1da177e4
LT		 374 return -ENOMEM;
375 }
376
377 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
378 vendor, compatible);
379 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
380 model, compatible);
381
382 if (strflags)
383 devinfo->flags = simple_strtoul(strflags, NULL, 0);
384 else
385 devinfo->flags = flags;
386
387 devinfo->compatible = compatible;
388
389 if (compatible)
598fa4b7
JB		 390 list_add_tail(&devinfo->dev_info_list,
391 &devinfo_table->scsi_dev_info_list);
1da177e4 392 else
598fa4b7
JB		 393 list_add(&devinfo->dev_info_list,
394 &devinfo_table->scsi_dev_info_list);
1da177e4
LT		 395
396 return 0;
397}
598fa4b7 398EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
1da177e4 399
38a039be 400/**
c42b3654 401 * scsi_dev_info_list_find - find a matching dev_info list entry.
38a039be
PJ		 402 * @vendor: vendor string
403 * @model: model (product) string
404 * @key: specify list to use
405 *
406 * Description:
c42b3654 407 * Finds the first dev_info entry matching @vendor, @model
38a039be
PJ		 408 * in list specified by @key.
409 *
c42b3654 410 * Returns: pointer to matching entry, or ERR_PTR on failure.
38a039be 411 **/
c42b3654
AS		 412static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
413 const char *model, int key)
38a039be 414{
c42b3654 415 struct scsi_dev_info_list *devinfo;
38a039be
PJ		 416 struct scsi_dev_info_list_table *devinfo_table =
417 scsi_devinfo_lookup_by_key(key);
b704f70c
AS		 418 size_t vmax, mmax;
419 const char *vskip, *mskip;
38a039be
PJ		 420
421 if (IS_ERR(devinfo_table))
c42b3654 422 return (struct scsi_dev_info_list *) devinfo_table;
38a039be 423
b704f70c
AS		 424 /* Prepare for "compatible" matches */
425
426 /*
427 * XXX why skip leading spaces? If an odd INQUIRY
428 * value, that should have been part of the
429 * scsi_static_device_list[] entry, such as " FOO"
430 * rather than "FOO". Since this code is already
431 * here, and we don't know what device it is
432 * trying to work with, leave it as-is.
433 */
5e7ff2ca 434 vmax = sizeof(devinfo->vendor);
b704f70c
AS		 435 vskip = vendor;
436 while (vmax > 0 && *vskip == ' ') {
437 vmax--;
438 vskip++;
439 }
440 /* Also skip trailing spaces */
441 while (vmax > 0 && vskip[vmax - 1] == ' ')
442 --vmax;
443
5e7ff2ca 444 mmax = sizeof(devinfo->model);
b704f70c
AS		 445 mskip = model;
446 while (mmax > 0 && *mskip == ' ') {
447 mmax--;
448 mskip++;
449 }
450 while (mmax > 0 && mskip[mmax - 1] == ' ')
451 --mmax;
452
38a039be
PJ		 453 list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
454 dev_info_list) {
455 if (devinfo->compatible) {
456 /*
457 * Behave like the older version of get_device_flags.
458 */
b704f70c 459 if (memcmp(devinfo->vendor, vskip, vmax) ||
5e7ff2ca
AS		 460 (vmax < sizeof(devinfo->vendor) &&
461 devinfo->vendor[vmax]))
38a039be 462 continue;
b704f70c 463 if (memcmp(devinfo->model, mskip, mmax) ||
5e7ff2ca
AS		 464 (mmax < sizeof(devinfo->model) &&
465 devinfo->model[mmax]))
38a039be 466 continue;
c42b3654 467 return devinfo;
38a039be
PJ		 468 } else {
469 if (!memcmp(devinfo->vendor, vendor,
470 sizeof(devinfo->vendor)) &&
471 !memcmp(devinfo->model, model,
472 sizeof(devinfo->model)))
c42b3654 473 return devinfo;
38a039be 474 }
38a039be
PJ		 475 }
476
c42b3654
AS		 477 return ERR_PTR(-ENOENT);
478}
479
480/**
481 * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
482 * @vendor: vendor string
483 * @model: model (product) string
484 * @key: specify list to use
485 *
486 * Description:
487 * Remove and destroy one dev_info entry for @vendor, @model
488 * in list specified by @key.
489 *
490 * Returns: 0 OK, -error on failure.
491 **/
492int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
493{
494 struct scsi_dev_info_list *found;
38a039be 495
c42b3654
AS		 496 found = scsi_dev_info_list_find(vendor, model, key);
497 if (IS_ERR(found))
498 return PTR_ERR(found);
499
500 list_del(&found->dev_info_list);
501 kfree(found);
502 return 0;
38a039be
PJ		 503}
504EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
505
1da177e4 506/**
eb44820c 507 * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
1da177e4
LT		 508 * @dev_list: string of device flags to add
509 *
510 * Description:
511 * Parse dev_list, and add entries to the scsi_dev_info_list.
512 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
513 * dev_list is modified via strsep. Can be called for command line
514 * addition, for proc or mabye a sysfs interface.
515 *
516 * Returns: 0 if OK, -error on failure.
517 **/
518static int scsi_dev_info_list_add_str(char *dev_list)
519{
520 char *vendor, *model, *strflags, *next;
521 char *next_check;
522 int res = 0;
523
524 next = dev_list;
525 if (next && next[0] == '"') {
526 /*
527 * Ignore both the leading and trailing quote.
528 */
529 next++;
530 next_check = ",\"";
531 } else {
532 next_check = ",";
533 }
534
535 /*
536 * For the leading and trailing '"' case, the for loop comes
537 * through the last time with vendor[0] == '\0'.
538 */
539 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
540 && (res == 0); vendor = strsep(&next, ":")) {
541 strflags = NULL;
542 model = strsep(&next, ":");
543 if (model)
544 strflags = strsep(&next, next_check);
545 if (!model || !strflags) {
546 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
cadbd4a5 547 " '%s'\n", __func__, vendor, model,
1da177e4
LT		 548 strflags);
549 res = -EINVAL;
550 } else
551 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
552 model, strflags, 0);
553 }
554 return res;
555}
556
557/**
eb44820c
RL		 558 * get_device_flags - get device specific flags from the dynamic device list.
559 * @sdev: &scsi_device to get flags for
1da177e4
LT		 560 * @vendor: vendor name
561 * @model: model name
562 *
563 * Description:
598fa4b7
JB		 564 * Search the global scsi_dev_info_list (specified by list zero)
565 * for an entry matching @vendor and @model, if found, return the
566 * matching flags value, else return the host or global default
567 * settings. Called during scan time.
1da177e4 568 **/
7f23e146
JB		 569int scsi_get_device_flags(struct scsi_device *sdev,
570 const unsigned char *vendor,
571 const unsigned char *model)
598fa4b7
JB		 572{
573 return scsi_get_device_flags_keyed(sdev, vendor, model,
574 SCSI_DEVINFO_GLOBAL);
575}
576
577
578/**
1acf3b06 579 * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
598fa4b7
JB		 580 * @sdev: &scsi_device to get flags for
581 * @vendor: vendor name
582 * @model: model name
583 * @key: list to look up
584 *
585 * Description:
586 * Search the scsi_dev_info_list specified by @key for an entry
587 * matching @vendor and @model, if found, return the matching
588 * flags value, else return the host or global default settings.
589 * Called during scan time.
590 **/
591int scsi_get_device_flags_keyed(struct scsi_device *sdev,
592 const unsigned char *vendor,
593 const unsigned char *model,
594 int key)
1da177e4
LT		 595{
596 struct scsi_dev_info_list *devinfo;
c42b3654 597 int err;
598fa4b7 598
c42b3654
AS		 599 devinfo = scsi_dev_info_list_find(vendor, model, key);
600 if (!IS_ERR(devinfo))
601 return devinfo->flags;
1da177e4 602
c42b3654
AS		 603 err = PTR_ERR(devinfo);
604 if (err != -ENOENT)
605 return err;
1da177e4 606
598fa4b7
JB		 607 /* nothing found, return nothing */
608 if (key != SCSI_DEVINFO_GLOBAL)
609 return 0;
610
611 /* except for the global list, where we have an exception */
612 if (sdev->sdev_bflags)
613 return sdev->sdev_bflags;
614
615 return scsi_default_dev_flags;
1da177e4 616}
598fa4b7 617EXPORT_SYMBOL(scsi_get_device_flags_keyed);
1da177e4
LT		 618
619#ifdef CONFIG_SCSI_PROC_FS
598fa4b7
JB		 620struct double_list {
621 struct list_head *top;
622 struct list_head *bottom;
623};
624
352ced8e 625static int devinfo_seq_show(struct seq_file *m, void *v)
1da177e4 626{
598fa4b7
JB		 627 struct double_list *dl = v;
628 struct scsi_dev_info_list_table *devinfo_table =
629 list_entry(dl->top, struct scsi_dev_info_list_table, node);
352ced8e 630 struct scsi_dev_info_list *devinfo =
598fa4b7
JB		 631 list_entry(dl->bottom, struct scsi_dev_info_list,
632 dev_info_list);
633
634 if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
635 devinfo_table->name)
636 seq_printf(m, "[%s]:\n", devinfo_table->name);
1da177e4 637
352ced8e 638 seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
598fa4b7 639 devinfo->vendor, devinfo->model, devinfo->flags);
352ced8e
AD		 640 return 0;
641}
642
598fa4b7 643static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
352ced8e 644{
598fa4b7
JB		 645 struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
646 loff_t pos = *ppos;
647
648 if (!dl)
649 return NULL;
650
651 list_for_each(dl->top, &scsi_dev_info_list) {
652 struct scsi_dev_info_list_table *devinfo_table =
653 list_entry(dl->top, struct scsi_dev_info_list_table,
654 node);
655 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
656 if (pos-- == 0)
657 return dl;
658 }
659
660 kfree(dl);
661 return NULL;
352ced8e 662}
1da177e4 663
598fa4b7 664static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
352ced8e 665{
598fa4b7
JB		 666 struct double_list *dl = v;
667 struct scsi_dev_info_list_table *devinfo_table =
668 list_entry(dl->top, struct scsi_dev_info_list_table, node);
669
670 ++*ppos;
671 dl->bottom = dl->bottom->next;
672 while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
673 dl->top = dl->top->next;
674 if (dl->top == &scsi_dev_info_list) {
675 kfree(dl);
676 return NULL;
677 }
678 devinfo_table = list_entry(dl->top,
679 struct scsi_dev_info_list_table,
680 node);
681 dl->bottom = devinfo_table->scsi_dev_info_list.next;
682 }
683
684 return dl;
352ced8e
AD		 685}
686
687static void devinfo_seq_stop(struct seq_file *m, void *v)
688{
598fa4b7 689 kfree(v);
352ced8e
AD		 690}
691
692static const struct seq_operations scsi_devinfo_seq_ops = {
693 .start = devinfo_seq_start,
694 .next = devinfo_seq_next,
695 .stop = devinfo_seq_stop,
696 .show = devinfo_seq_show,
697};
698
699static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
700{
701 return seq_open(file, &scsi_devinfo_seq_ops);
1da177e4
LT		 702}
703
704/*
eb44820c 705 * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
1da177e4 706 *
eb44820c
RL		 707 * Description: Adds a black/white list entry for vendor and model with an
708 * integer value of flag to the scsi device info list.
709 * To use, echo "vendor:model:flag" > /proc/scsi/device_info
1da177e4 710 */
352ced8e
AD		 711static ssize_t proc_scsi_devinfo_write(struct file *file,
712 const char __user *buf,
713 size_t length, loff_t *ppos)
1da177e4
LT		 714{
715 char *buffer;
352ced8e 716 ssize_t err = length;
1da177e4
LT		 717
718 if (!buf || length>PAGE_SIZE)
719 return -EINVAL;
720 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
721 return -ENOMEM;
722 if (copy_from_user(buffer, buf, length)) {
723 err =-EFAULT;
724 goto out;
725 }
726
727 if (length < PAGE_SIZE)
728 buffer[length] = '\0';
729 else if (buffer[PAGE_SIZE-1]) {
730 err = -EINVAL;
731 goto out;
732 }
733
734 scsi_dev_info_list_add_str(buffer);
735
736out:
737 free_page((unsigned long)buffer);
738 return err;
739}
352ced8e
AD		 740
741static const struct file_operations scsi_devinfo_proc_fops = {
742 .owner = THIS_MODULE,
743 .open = proc_scsi_devinfo_open,
744 .read = seq_read,
745 .write = proc_scsi_devinfo_write,
746 .llseek = seq_lseek,
747 .release = seq_release,
748};
1da177e4
LT		 749#endif /* CONFIG_SCSI_PROC_FS */
750
751module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
752MODULE_PARM_DESC(dev_flags,
753 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
754 " list entries for vendor and model with an integer value of flags"
755 " to the scsi device info list");
756
757module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
758MODULE_PARM_DESC(default_dev_flags,
759 "scsi default device flag integer value");
760
761/**
1acf3b06 762 * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
1da177e4
LT		 763 **/
764void scsi_exit_devinfo(void)
765{
1da177e4
LT		 766#ifdef CONFIG_SCSI_PROC_FS
767 remove_proc_entry("scsi/device_info", NULL);
768#endif
769
598fa4b7
JB		 770 scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
771}
772
773/**
774 * scsi_dev_info_add_list - add a new devinfo list
775 * @key: key of the list to add
776 * @name: Name of the list to add (for /proc/scsi/device_info)
777 *
778 * Adds the requested list, returns zero on success, -EEXIST if the
779 * key is already registered to a list, or other error on failure.
780 */
781int scsi_dev_info_add_list(int key, const char *name)
782{
783 struct scsi_dev_info_list_table *devinfo_table =
784 scsi_devinfo_lookup_by_key(key);
785
786 if (!IS_ERR(devinfo_table))
787 /* list already exists */
788 return -EEXIST;
789
790 devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
791
792 if (!devinfo_table)
793 return -ENOMEM;
794
795 INIT_LIST_HEAD(&devinfo_table->node);
796 INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
797 devinfo_table->name = name;
798 devinfo_table->key = key;
799 list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
800
801 return 0;
802}
803EXPORT_SYMBOL(scsi_dev_info_add_list);
804
805/**
806 * scsi_dev_info_remove_list - destroy an added devinfo list
807 * @key: key of the list to destroy
808 *
809 * Iterates over the entire list first, freeing all the values, then
810 * frees the list itself. Returns 0 on success or -EINVAL if the key
811 * can't be found.
812 */
813int scsi_dev_info_remove_list(int key)
814{
815 struct list_head *lh, *lh_next;
816 struct scsi_dev_info_list_table *devinfo_table =
817 scsi_devinfo_lookup_by_key(key);
818
819 if (IS_ERR(devinfo_table))
820 /* no such list */
821 return -EINVAL;
822
823 /* remove from the master list */
824 list_del(&devinfo_table->node);
825
826 list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
827 struct scsi_dev_info_list *devinfo;
828
1da177e4
LT		 829 devinfo = list_entry(lh, struct scsi_dev_info_list,
830 dev_info_list);
831 kfree(devinfo);
832 }
598fa4b7
JB		 833 kfree(devinfo_table);
834
835 return 0;
1da177e4 836}
598fa4b7 837EXPORT_SYMBOL(scsi_dev_info_remove_list);
1da177e4
LT		 838
839/**
c93ff979 840 * scsi_init_devinfo - set up the dynamic device list.
1da177e4
LT		 841 *
842 * Description:
eb44820c 843 * Add command line entries from scsi_dev_flags, then add
1da177e4 844 * scsi_static_device_list entries to the scsi device info list.
eb44820c 845 */
1da177e4
LT		 846int __init scsi_init_devinfo(void)
847{
848#ifdef CONFIG_SCSI_PROC_FS
849 struct proc_dir_entry *p;
850#endif
851 int error, i;
852
598fa4b7 853 error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
1da177e4
LT		 854 if (error)
855 return error;
856
598fa4b7
JB		 857 error = scsi_dev_info_list_add_str(scsi_dev_flags);
858 if (error)
859 goto out;
860
1da177e4
LT		 861 for (i = 0; scsi_static_device_list[i].vendor; i++) {
862 error = scsi_dev_info_list_add(1 /* compatibile */,
863 scsi_static_device_list[i].vendor,
864 scsi_static_device_list[i].model,
865 NULL,
866 scsi_static_device_list[i].flags);
867 if (error)
868 goto out;
869 }
870
871#ifdef CONFIG_SCSI_PROC_FS
352ced8e 872 p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
1da177e4
LT		 873 if (!p) {
874 error = -ENOMEM;
875 goto out;
876 }
1da177e4
LT		 877#endif /* CONFIG_SCSI_PROC_FS */
878
879 out:
880 if (error)
881 scsi_exit_devinfo();
882 return error;
883}
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