config: tegra3: enable /dev mount with ACL
[linux-2.6.git] / drivers / scsi / scsi_devinfo.c
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>
9 #include <linux/slab.h>
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  */
20 struct 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
28 struct 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
35
36 static const char spaces[] = "                "; /* 16 of them */
37 static unsigned scsi_default_dev_flags;
38 static LIST_HEAD(scsi_dev_info_list);
39 static 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  */
50 static 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 */
67         {"IBM", "2104-DU3", NULL, BLIST_NOLUN},         /* locks up */
68         {"IBM", "2104-TU3", NULL, BLIST_NOLUN},         /* locks up */
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},
123         {"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
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 */
128         {"", "Scanner", "1.80", BLIST_NOLUN},   /* responds to all lun */
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},
139         {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
140         {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
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 */
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 */
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},
154         {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
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 */
162         {"EMC",  "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
163         {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
164         {"EMULEX", "MD21/S2     ESDI", NULL, BLIST_SINGLELUN},
165         {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
166         {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
167         {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
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},
172         {"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
173         {"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
174         {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
175         {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
176         {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
177         {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
178         {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
179         {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
180         {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
181         {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN},       /* HP VA7400 */
182         {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
183         {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
184         {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
185         {"HP", "C1557A", NULL, BLIST_FORCELUN},
186         {"HP", "C3323-300", "4269", BLIST_NOTQ},
187         {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
188         {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
189         {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
190         {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
191         {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
192         {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
193         {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
194         {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
195         {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
196         {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
197         {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
198         {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
199         {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
200         {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
201         {"IOMEGA", "Io20S         *F", NULL, BLIST_KEY},
202         {"INSITE", "Floptical   F*8I", NULL, BLIST_KEY},
203         {"INSITE", "I325VM", NULL, BLIST_KEY},
204         {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
205         {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
206         {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
207         {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
208         {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
209         {"Medion", "Flash XL  MMC/SD", "2.6D", BLIST_FORCELUN},
210         {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
211         {"MICROP", "4110", NULL, BLIST_NOTQ},
212         {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
213         {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
214         {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
215         {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
216         {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
217         {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
218         {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
219         {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
220         {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
221         {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
222         {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
223         {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
224         {"Promise", "", NULL, BLIST_SPARSELUN},
225         {"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
226         {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
227         {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
228         {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ},    /* Chokes on tagged INQUIRY */
229         {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
230         {"SGI", "RAID3", "*", BLIST_SPARSELUN},
231         {"SGI", "RAID5", "*", BLIST_SPARSELUN},
232         {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
233         {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
234         {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
235         {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
236         {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
237         {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
238         {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
239         {"SONY", "TSL", NULL, BLIST_FORCELUN},          /* DDS3 & DDS4 autoloaders */
240         {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
241         {"SUN", "T300", "*", BLIST_SPARSELUN},
242         {"SUN", "T4", "*", BLIST_SPARSELUN},
243         {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
244         {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
245         {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
246         {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
247         {"Traxdata", "CDR4120", NULL, BLIST_NOLUN},     /* locks up */
248         {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
249         {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
250         {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
251         {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
252         {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
253         {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
254         {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
255         {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
256         { NULL, NULL, NULL, 0 },
257 };
258
259 static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
260 {
261         struct scsi_dev_info_list_table *devinfo_table;
262         int found = 0;
263
264         list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
265                 if (devinfo_table->key == key) {
266                         found = 1;
267                         break;
268                 }
269         if (!found)
270                 return ERR_PTR(-EINVAL);
271
272         return devinfo_table;
273 }
274
275 /*
276  * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
277  * devinfo vendor and model strings.
278  */
279 static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
280                                 char *from, int compatible)
281 {
282         size_t from_length;
283
284         from_length = strlen(from);
285         strncpy(to, from, min(to_length, from_length));
286         if (from_length < to_length) {
287                 if (compatible) {
288                         /*
289                          * NUL terminate the string if it is short.
290                          */
291                         to[from_length] = '\0';
292                 } else {
293                         /* 
294                          * space pad the string if it is short. 
295                          */
296                         strncpy(&to[from_length], spaces,
297                                 to_length - from_length);
298                 }
299         }
300         if (from_length > to_length)
301                  printk(KERN_WARNING "%s: %s string '%s' is too long\n",
302                         __func__, name, from);
303 }
304
305 /**
306  * scsi_dev_info_list_add - add one dev_info list entry.
307  * @compatible: if true, null terminate short strings.  Otherwise space pad.
308  * @vendor:     vendor string
309  * @model:      model (product) string
310  * @strflags:   integer string
311  * @flags:      if strflags NULL, use this flag value
312  *
313  * Description:
314  *      Create and add one dev_info entry for @vendor, @model, @strflags or
315  *      @flag. If @compatible, add to the tail of the list, do not space
316  *      pad, and set devinfo->compatible. The scsi_static_device_list entries
317  *      are added with @compatible 1 and @clfags NULL.
318  *
319  * Returns: 0 OK, -error on failure.
320  **/
321 static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
322                             char *strflags, int flags)
323 {
324         return scsi_dev_info_list_add_keyed(compatible, vendor, model,
325                                             strflags, flags,
326                                             SCSI_DEVINFO_GLOBAL);
327 }
328
329 /**
330  * scsi_dev_info_list_add_keyed - add one dev_info list entry.
331  * @compatible: if true, null terminate short strings.  Otherwise space pad.
332  * @vendor:     vendor string
333  * @model:      model (product) string
334  * @strflags:   integer string
335  * @flags:      if strflags NULL, use this flag value
336  * @key:        specify list to use
337  *
338  * Description:
339  *      Create and add one dev_info entry for @vendor, @model,
340  *      @strflags or @flag in list specified by @key. If @compatible,
341  *      add to the tail of the list, do not space pad, and set
342  *      devinfo->compatible. The scsi_static_device_list entries are
343  *      added with @compatible 1 and @clfags NULL.
344  *
345  * Returns: 0 OK, -error on failure.
346  **/
347 int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model,
348                                  char *strflags, int flags, int key)
349 {
350         struct scsi_dev_info_list *devinfo;
351         struct scsi_dev_info_list_table *devinfo_table =
352                 scsi_devinfo_lookup_by_key(key);
353
354         if (IS_ERR(devinfo_table))
355                 return PTR_ERR(devinfo_table);
356
357         devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
358         if (!devinfo) {
359                 printk(KERN_ERR "%s: no memory\n", __func__);
360                 return -ENOMEM;
361         }
362
363         scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
364                             vendor, compatible);
365         scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
366                             model, compatible);
367
368         if (strflags)
369                 devinfo->flags = simple_strtoul(strflags, NULL, 0);
370         else
371                 devinfo->flags = flags;
372
373         devinfo->compatible = compatible;
374
375         if (compatible)
376                 list_add_tail(&devinfo->dev_info_list,
377                               &devinfo_table->scsi_dev_info_list);
378         else
379                 list_add(&devinfo->dev_info_list,
380                          &devinfo_table->scsi_dev_info_list);
381
382         return 0;
383 }
384 EXPORT_SYMBOL(scsi_dev_info_list_add_keyed);
385
386 /**
387  * scsi_dev_info_list_del_keyed - remove one dev_info list entry.
388  * @vendor:     vendor string
389  * @model:      model (product) string
390  * @key:        specify list to use
391  *
392  * Description:
393  *      Remove and destroy one dev_info entry for @vendor, @model
394  *      in list specified by @key.
395  *
396  * Returns: 0 OK, -error on failure.
397  **/
398 int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key)
399 {
400         struct scsi_dev_info_list *devinfo, *found = NULL;
401         struct scsi_dev_info_list_table *devinfo_table =
402                 scsi_devinfo_lookup_by_key(key);
403
404         if (IS_ERR(devinfo_table))
405                 return PTR_ERR(devinfo_table);
406
407         list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
408                             dev_info_list) {
409                 if (devinfo->compatible) {
410                         /*
411                          * Behave like the older version of get_device_flags.
412                          */
413                         size_t max;
414                         /*
415                          * XXX why skip leading spaces? If an odd INQUIRY
416                          * value, that should have been part of the
417                          * scsi_static_device_list[] entry, such as "  FOO"
418                          * rather than "FOO". Since this code is already
419                          * here, and we don't know what device it is
420                          * trying to work with, leave it as-is.
421                          */
422                         max = 8;        /* max length of vendor */
423                         while ((max > 0) && *vendor == ' ') {
424                                 max--;
425                                 vendor++;
426                         }
427                         /*
428                          * XXX removing the following strlen() would be
429                          * good, using it means that for a an entry not in
430                          * the list, we scan every byte of every vendor
431                          * listed in scsi_static_device_list[], and never match
432                          * a single one (and still have to compare at
433                          * least the first byte of each vendor).
434                          */
435                         if (memcmp(devinfo->vendor, vendor,
436                                     min(max, strlen(devinfo->vendor))))
437                                 continue;
438                         /*
439                          * Skip spaces again.
440                          */
441                         max = 16;       /* max length of model */
442                         while ((max > 0) && *model == ' ') {
443                                 max--;
444                                 model++;
445                         }
446                         if (memcmp(devinfo->model, model,
447                                    min(max, strlen(devinfo->model))))
448                                 continue;
449                         found = devinfo;
450                 } else {
451                         if (!memcmp(devinfo->vendor, vendor,
452                                      sizeof(devinfo->vendor)) &&
453                              !memcmp(devinfo->model, model,
454                                       sizeof(devinfo->model)))
455                                 found = devinfo;
456                 }
457                 if (found)
458                         break;
459         }
460
461         if (found) {
462                 list_del(&found->dev_info_list);
463                 kfree(found);
464                 return 0;
465         }
466
467         return -ENOENT;
468 }
469 EXPORT_SYMBOL(scsi_dev_info_list_del_keyed);
470
471 /**
472  * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list.
473  * @dev_list:   string of device flags to add
474  *
475  * Description:
476  *      Parse dev_list, and add entries to the scsi_dev_info_list.
477  *      dev_list is of the form "vendor:product:flag,vendor:product:flag".
478  *      dev_list is modified via strsep. Can be called for command line
479  *      addition, for proc or mabye a sysfs interface.
480  *
481  * Returns: 0 if OK, -error on failure.
482  **/
483 static int scsi_dev_info_list_add_str(char *dev_list)
484 {
485         char *vendor, *model, *strflags, *next;
486         char *next_check;
487         int res = 0;
488
489         next = dev_list;
490         if (next && next[0] == '"') {
491                 /*
492                  * Ignore both the leading and trailing quote.
493                  */
494                 next++;
495                 next_check = ",\"";
496         } else {
497                 next_check = ",";
498         }
499
500         /*
501          * For the leading and trailing '"' case, the for loop comes
502          * through the last time with vendor[0] == '\0'.
503          */
504         for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
505              && (res == 0); vendor = strsep(&next, ":")) {
506                 strflags = NULL;
507                 model = strsep(&next, ":");
508                 if (model)
509                         strflags = strsep(&next, next_check);
510                 if (!model || !strflags) {
511                         printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
512                                " '%s'\n", __func__, vendor, model,
513                                strflags);
514                         res = -EINVAL;
515                 } else
516                         res = scsi_dev_info_list_add(0 /* compatible */, vendor,
517                                                      model, strflags, 0);
518         }
519         return res;
520 }
521
522 /**
523  * get_device_flags - get device specific flags from the dynamic device list.
524  * @sdev:       &scsi_device to get flags for
525  * @vendor:     vendor name
526  * @model:      model name
527  *
528  * Description:
529  *     Search the global scsi_dev_info_list (specified by list zero)
530  *     for an entry matching @vendor and @model, if found, return the
531  *     matching flags value, else return the host or global default
532  *     settings.  Called during scan time.
533  **/
534 int scsi_get_device_flags(struct scsi_device *sdev,
535                           const unsigned char *vendor,
536                           const unsigned char *model)
537 {
538         return scsi_get_device_flags_keyed(sdev, vendor, model,
539                                            SCSI_DEVINFO_GLOBAL);
540 }
541
542
543 /**
544  * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list
545  * @sdev:       &scsi_device to get flags for
546  * @vendor:     vendor name
547  * @model:      model name
548  * @key:        list to look up
549  *
550  * Description:
551  *     Search the scsi_dev_info_list specified by @key for an entry
552  *     matching @vendor and @model, if found, return the matching
553  *     flags value, else return the host or global default settings.
554  *     Called during scan time.
555  **/
556 int scsi_get_device_flags_keyed(struct scsi_device *sdev,
557                                 const unsigned char *vendor,
558                                 const unsigned char *model,
559                                 int key)
560 {
561         struct scsi_dev_info_list *devinfo;
562         struct scsi_dev_info_list_table *devinfo_table;
563
564         devinfo_table = scsi_devinfo_lookup_by_key(key);
565
566         if (IS_ERR(devinfo_table))
567                 return PTR_ERR(devinfo_table);
568
569         list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list,
570                             dev_info_list) {
571                 if (devinfo->compatible) {
572                         /*
573                          * Behave like the older version of get_device_flags.
574                          */
575                         size_t max;
576                         /*
577                          * XXX why skip leading spaces? If an odd INQUIRY
578                          * value, that should have been part of the
579                          * scsi_static_device_list[] entry, such as "  FOO"
580                          * rather than "FOO". Since this code is already
581                          * here, and we don't know what device it is
582                          * trying to work with, leave it as-is.
583                          */
584                         max = 8;        /* max length of vendor */
585                         while ((max > 0) && *vendor == ' ') {
586                                 max--;
587                                 vendor++;
588                         }
589                         /*
590                          * XXX removing the following strlen() would be
591                          * good, using it means that for a an entry not in
592                          * the list, we scan every byte of every vendor
593                          * listed in scsi_static_device_list[], and never match
594                          * a single one (and still have to compare at
595                          * least the first byte of each vendor).
596                          */
597                         if (memcmp(devinfo->vendor, vendor,
598                                     min(max, strlen(devinfo->vendor))))
599                                 continue;
600                         /*
601                          * Skip spaces again.
602                          */
603                         max = 16;       /* max length of model */
604                         while ((max > 0) && *model == ' ') {
605                                 max--;
606                                 model++;
607                         }
608                         if (memcmp(devinfo->model, model,
609                                    min(max, strlen(devinfo->model))))
610                                 continue;
611                         return devinfo->flags;
612                 } else {
613                         if (!memcmp(devinfo->vendor, vendor,
614                                      sizeof(devinfo->vendor)) &&
615                              !memcmp(devinfo->model, model,
616                                       sizeof(devinfo->model)))
617                                 return devinfo->flags;
618                 }
619         }
620         /* nothing found, return nothing */
621         if (key != SCSI_DEVINFO_GLOBAL)
622                 return 0;
623
624         /* except for the global list, where we have an exception */
625         if (sdev->sdev_bflags)
626                 return sdev->sdev_bflags;
627
628         return scsi_default_dev_flags;
629 }
630 EXPORT_SYMBOL(scsi_get_device_flags_keyed);
631
632 #ifdef CONFIG_SCSI_PROC_FS
633 struct double_list {
634         struct list_head *top;
635         struct list_head *bottom;
636 };
637
638 static int devinfo_seq_show(struct seq_file *m, void *v)
639 {
640         struct double_list *dl = v;
641         struct scsi_dev_info_list_table *devinfo_table =
642                 list_entry(dl->top, struct scsi_dev_info_list_table, node);
643         struct scsi_dev_info_list *devinfo =
644                 list_entry(dl->bottom, struct scsi_dev_info_list,
645                            dev_info_list);
646
647         if (devinfo_table->scsi_dev_info_list.next == dl->bottom &&
648             devinfo_table->name)
649                 seq_printf(m, "[%s]:\n", devinfo_table->name);
650
651         seq_printf(m, "'%.8s' '%.16s' 0x%x\n",
652                    devinfo->vendor, devinfo->model, devinfo->flags);
653         return 0;
654 }
655
656 static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos)
657 {
658         struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL);
659         loff_t pos = *ppos;
660
661         if (!dl)
662                 return NULL;
663
664         list_for_each(dl->top, &scsi_dev_info_list) {
665                 struct scsi_dev_info_list_table *devinfo_table =
666                         list_entry(dl->top, struct scsi_dev_info_list_table,
667                                    node);
668                 list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list)
669                         if (pos-- == 0)
670                                 return dl;
671         }
672
673         kfree(dl);
674         return NULL;
675 }
676
677 static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos)
678 {
679         struct double_list *dl = v;
680         struct scsi_dev_info_list_table *devinfo_table =
681                 list_entry(dl->top, struct scsi_dev_info_list_table, node);
682
683         ++*ppos;
684         dl->bottom = dl->bottom->next;
685         while (&devinfo_table->scsi_dev_info_list == dl->bottom) {
686                 dl->top = dl->top->next;
687                 if (dl->top == &scsi_dev_info_list) {
688                         kfree(dl);
689                         return NULL;
690                 }
691                 devinfo_table = list_entry(dl->top,
692                                            struct scsi_dev_info_list_table,
693                                            node);
694                 dl->bottom = devinfo_table->scsi_dev_info_list.next;
695         }
696
697         return dl;
698 }
699
700 static void devinfo_seq_stop(struct seq_file *m, void *v)
701 {
702         kfree(v);
703 }
704
705 static const struct seq_operations scsi_devinfo_seq_ops = {
706         .start  = devinfo_seq_start,
707         .next   = devinfo_seq_next,
708         .stop   = devinfo_seq_stop,
709         .show   = devinfo_seq_show,
710 };
711
712 static int proc_scsi_devinfo_open(struct inode *inode, struct file *file)
713 {
714         return seq_open(file, &scsi_devinfo_seq_ops);
715 }
716
717 /* 
718  * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc.
719  *
720  * Description: Adds a black/white list entry for vendor and model with an
721  * integer value of flag to the scsi device info list.
722  * To use, echo "vendor:model:flag" > /proc/scsi/device_info
723  */
724 static ssize_t proc_scsi_devinfo_write(struct file *file,
725                                        const char __user *buf,
726                                        size_t length, loff_t *ppos)
727 {
728         char *buffer;
729         ssize_t err = length;
730
731         if (!buf || length>PAGE_SIZE)
732                 return -EINVAL;
733         if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
734                 return -ENOMEM;
735         if (copy_from_user(buffer, buf, length)) {
736                 err =-EFAULT;
737                 goto out;
738         }
739
740         if (length < PAGE_SIZE)
741                 buffer[length] = '\0';
742         else if (buffer[PAGE_SIZE-1]) {
743                 err = -EINVAL;
744                 goto out;
745         }
746
747         scsi_dev_info_list_add_str(buffer);
748
749 out:
750         free_page((unsigned long)buffer);
751         return err;
752 }
753
754 static const struct file_operations scsi_devinfo_proc_fops = {
755         .owner          = THIS_MODULE,
756         .open           = proc_scsi_devinfo_open,
757         .read           = seq_read,
758         .write          = proc_scsi_devinfo_write,
759         .llseek         = seq_lseek,
760         .release        = seq_release,
761 };
762 #endif /* CONFIG_SCSI_PROC_FS */
763
764 module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
765 MODULE_PARM_DESC(dev_flags,
766          "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
767          " list entries for vendor and model with an integer value of flags"
768          " to the scsi device info list");
769
770 module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
771 MODULE_PARM_DESC(default_dev_flags,
772                  "scsi default device flag integer value");
773
774 /**
775  * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list
776  **/
777 void scsi_exit_devinfo(void)
778 {
779 #ifdef CONFIG_SCSI_PROC_FS
780         remove_proc_entry("scsi/device_info", NULL);
781 #endif
782
783         scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL);
784 }
785
786 /**
787  * scsi_dev_info_add_list - add a new devinfo list
788  * @key:        key of the list to add
789  * @name:       Name of the list to add (for /proc/scsi/device_info)
790  *
791  * Adds the requested list, returns zero on success, -EEXIST if the
792  * key is already registered to a list, or other error on failure.
793  */
794 int scsi_dev_info_add_list(int key, const char *name)
795 {
796         struct scsi_dev_info_list_table *devinfo_table =
797                 scsi_devinfo_lookup_by_key(key);
798
799         if (!IS_ERR(devinfo_table))
800                 /* list already exists */
801                 return -EEXIST;
802
803         devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL);
804
805         if (!devinfo_table)
806                 return -ENOMEM;
807
808         INIT_LIST_HEAD(&devinfo_table->node);
809         INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list);
810         devinfo_table->name = name;
811         devinfo_table->key = key;
812         list_add_tail(&devinfo_table->node, &scsi_dev_info_list);
813
814         return 0;
815 }
816 EXPORT_SYMBOL(scsi_dev_info_add_list);
817
818 /**
819  * scsi_dev_info_remove_list - destroy an added devinfo list
820  * @key: key of the list to destroy
821  *
822  * Iterates over the entire list first, freeing all the values, then
823  * frees the list itself.  Returns 0 on success or -EINVAL if the key
824  * can't be found.
825  */
826 int scsi_dev_info_remove_list(int key)
827 {
828         struct list_head *lh, *lh_next;
829         struct scsi_dev_info_list_table *devinfo_table =
830                 scsi_devinfo_lookup_by_key(key);
831
832         if (IS_ERR(devinfo_table))
833                 /* no such list */
834                 return -EINVAL;
835
836         /* remove from the master list */
837         list_del(&devinfo_table->node);
838
839         list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) {
840                 struct scsi_dev_info_list *devinfo;
841
842                 devinfo = list_entry(lh, struct scsi_dev_info_list,
843                                      dev_info_list);
844                 kfree(devinfo);
845         }
846         kfree(devinfo_table);
847
848         return 0;
849 }
850 EXPORT_SYMBOL(scsi_dev_info_remove_list);
851
852 /**
853  * scsi_init_devinfo - set up the dynamic device list.
854  *
855  * Description:
856  *      Add command line entries from scsi_dev_flags, then add
857  *      scsi_static_device_list entries to the scsi device info list.
858  */
859 int __init scsi_init_devinfo(void)
860 {
861 #ifdef CONFIG_SCSI_PROC_FS
862         struct proc_dir_entry *p;
863 #endif
864         int error, i;
865
866         error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL);
867         if (error)
868                 return error;
869
870         error = scsi_dev_info_list_add_str(scsi_dev_flags);
871         if (error)
872                 goto out;
873
874         for (i = 0; scsi_static_device_list[i].vendor; i++) {
875                 error = scsi_dev_info_list_add(1 /* compatibile */,
876                                 scsi_static_device_list[i].vendor,
877                                 scsi_static_device_list[i].model,
878                                 NULL,
879                                 scsi_static_device_list[i].flags);
880                 if (error)
881                         goto out;
882         }
883
884 #ifdef CONFIG_SCSI_PROC_FS
885         p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops);
886         if (!p) {
887                 error = -ENOMEM;
888                 goto out;
889         }
890 #endif /* CONFIG_SCSI_PROC_FS */
891
892  out:
893         if (error)
894                 scsi_exit_devinfo();
895         return error;
896 }