scsi_devinfo.c 21 KB

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  1. #include <linux/blkdev.h>
  2. #include <linux/init.h>
  3. #include <linux/kernel.h>
  4. #include <linux/module.h>
  5. #include <linux/moduleparam.h>
  6. #include <linux/proc_fs.h>
  7. #include <linux/seq_file.h>
  8. #include <scsi/scsi_device.h>
  9. #include <scsi/scsi_devinfo.h>
  10. #include "scsi_priv.h"
  11. /*
  12. * scsi_dev_info_list: structure to hold black/white listed devices.
  13. */
  14. struct scsi_dev_info_list {
  15. struct list_head dev_info_list;
  16. char vendor[8];
  17. char model[16];
  18. unsigned flags;
  19. unsigned compatible; /* for use with scsi_static_device_list entries */
  20. };
  21. static const char spaces[] = " "; /* 16 of them */
  22. static unsigned scsi_default_dev_flags;
  23. static LIST_HEAD(scsi_dev_info_list);
  24. static char scsi_dev_flags[256];
  25. /*
  26. * scsi_static_device_list: deprecated list of devices that require
  27. * settings that differ from the default, includes black-listed (broken)
  28. * devices. The entries here are added to the tail of scsi_dev_info_list
  29. * via scsi_dev_info_list_init.
  30. *
  31. * Do not add to this list, use the command line or proc interface to add
  32. * to the scsi_dev_info_list. This table will eventually go away.
  33. */
  34. static struct {
  35. char *vendor;
  36. char *model;
  37. char *revision; /* revision known to be bad, unused */
  38. unsigned flags;
  39. } scsi_static_device_list[] __initdata = {
  40. /*
  41. * The following devices are known not to tolerate a lun != 0 scan
  42. * for one reason or another. Some will respond to all luns,
  43. * others will lock up.
  44. */
  45. {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */
  46. {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */
  47. {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */
  48. {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */
  49. {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */
  50. {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */
  51. {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */
  52. {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */
  53. {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */
  54. {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */
  55. {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */
  56. {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */
  57. {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */
  58. {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */
  59. {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */
  60. {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */
  61. {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
  62. {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */
  63. {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */
  64. {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */
  65. /*
  66. * The following causes a failed REQUEST SENSE on lun 1 for
  67. * aha152x controller, which causes SCSI code to reset bus.
  68. */
  69. {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
  70. /*
  71. * The following causes a failed REQUEST SENSE on lun 1 for
  72. * aha152x controller, which causes SCSI code to reset bus.
  73. */
  74. {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
  75. {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */
  76. {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */
  77. {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
  78. {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
  79. {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
  80. {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
  81. {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN},
  82. {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */
  83. {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */
  84. /*
  85. * The following causes a failed REQUEST SENSE on lun 1 for
  86. * seagate controller, which causes SCSI code to reset bus.
  87. */
  88. {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
  89. {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */
  90. /*
  91. * The following causes a failed REQUEST SENSE on lun 1 for
  92. * seagate controller, which causes SCSI code to reset bus.
  93. */
  94. {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */
  95. {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */
  96. {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */
  97. {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */
  98. {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */
  99. {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */
  100. {"NEC", "D3856", "0009", BLIST_NOLUN},
  101. {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */
  102. {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */
  103. {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */
  104. {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */
  105. {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */
  106. {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN},
  107. {"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
  108. {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */
  109. {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */
  110. {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */
  111. {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */
  112. {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */
  113. /*
  114. * Other types of devices that have special flags.
  115. * Note that all USB devices should have the BLIST_INQUIRY_36 flag.
  116. */
  117. {"3PARdata", "VV", NULL, BLIST_REPORTLUN2},
  118. {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
  119. {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
  120. {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
  121. {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
  122. {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
  123. {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
  124. {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
  125. {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
  126. {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
  127. {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
  128. {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
  129. BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */
  130. {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */
  131. {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
  132. {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
  133. {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
  134. {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
  135. {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
  136. {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
  137. {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
  138. {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
  139. {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
  140. {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
  141. {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
  142. {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */
  143. {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */
  144. {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  145. {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
  146. {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
  147. {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  148. {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
  149. {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36},
  150. {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36},
  151. {"HITACHI", "DF400", "*", BLIST_SPARSELUN},
  152. {"HITACHI", "DF500", "*", BLIST_SPARSELUN},
  153. {"HITACHI", "DF600", "*", BLIST_SPARSELUN},
  154. {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN},
  155. {"HITACHI", "OPEN-E", "*", BLIST_ATTACH_PQ3 | BLIST_SPARSELUN | BLIST_LARGELUN},
  156. {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  157. {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  158. {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  159. {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  160. {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  161. {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
  162. {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
  163. {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
  164. {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
  165. {"HP", "C1557A", NULL, BLIST_FORCELUN},
  166. {"HP", "C3323-300", "4269", BLIST_NOTQ},
  167. {"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
  168. {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  169. {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  170. {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  171. {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  172. {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  173. {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  174. {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  175. {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  176. {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
  177. {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  178. {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
  179. {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
  180. {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
  181. {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
  182. {"INSITE", "I325VM", NULL, BLIST_KEY},
  183. {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
  184. {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
  185. {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  186. {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
  187. {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
  188. {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
  189. {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
  190. {"MICROP", "4110", NULL, BLIST_NOTQ},
  191. {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
  192. {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
  193. {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  194. {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  195. {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  196. {"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
  197. {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  198. {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  199. {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  200. {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  201. {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  202. {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
  203. {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
  204. {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
  205. {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
  206. {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
  207. {"SGI", "RAID3", "*", BLIST_SPARSELUN},
  208. {"SGI", "RAID5", "*", BLIST_SPARSELUN},
  209. {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
  210. {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
  211. {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
  212. {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
  213. {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
  214. {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
  215. {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
  216. {"SUN", "T300", "*", BLIST_SPARSELUN},
  217. {"SUN", "T4", "*", BLIST_SPARSELUN},
  218. {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
  219. {"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
  220. {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
  221. {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
  222. {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
  223. {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
  224. {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
  225. {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
  226. {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
  227. {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
  228. {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
  229. {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
  230. { NULL, NULL, NULL, 0 },
  231. };
  232. /*
  233. * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
  234. * devinfo vendor and model strings.
  235. */
  236. static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
  237. char *from, int compatible)
  238. {
  239. size_t from_length;
  240. from_length = strlen(from);
  241. strncpy(to, from, min(to_length, from_length));
  242. if (from_length < to_length) {
  243. if (compatible) {
  244. /*
  245. * NUL terminate the string if it is short.
  246. */
  247. to[from_length] = '\0';
  248. } else {
  249. /*
  250. * space pad the string if it is short.
  251. */
  252. strncpy(&to[from_length], spaces,
  253. to_length - from_length);
  254. }
  255. }
  256. if (from_length > to_length)
  257. printk(KERN_WARNING "%s: %s string '%s' is too long\n",
  258. __FUNCTION__, name, from);
  259. }
  260. /**
  261. * scsi_dev_info_list_add: add one dev_info list entry.
  262. * @vendor: vendor string
  263. * @model: model (product) string
  264. * @strflags: integer string
  265. * @flag: if strflags NULL, use this flag value
  266. *
  267. * Description:
  268. * Create and add one dev_info entry for @vendor, @model, @strflags or
  269. * @flag. If @compatible, add to the tail of the list, do not space
  270. * pad, and set devinfo->compatible. The scsi_static_device_list entries
  271. * are added with @compatible 1 and @clfags NULL.
  272. *
  273. * Returns: 0 OK, -error on failure.
  274. **/
  275. static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
  276. char *strflags, int flags)
  277. {
  278. struct scsi_dev_info_list *devinfo;
  279. devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
  280. if (!devinfo) {
  281. printk(KERN_ERR "%s: no memory\n", __FUNCTION__);
  282. return -ENOMEM;
  283. }
  284. scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
  285. vendor, compatible);
  286. scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
  287. model, compatible);
  288. if (strflags)
  289. devinfo->flags = simple_strtoul(strflags, NULL, 0);
  290. else
  291. devinfo->flags = flags;
  292. devinfo->compatible = compatible;
  293. if (compatible)
  294. list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list);
  295. else
  296. list_add(&devinfo->dev_info_list, &scsi_dev_info_list);
  297. return 0;
  298. }
  299. /**
  300. * scsi_dev_info_list_add_str: parse dev_list and add to the
  301. * scsi_dev_info_list.
  302. * @dev_list: string of device flags to add
  303. *
  304. * Description:
  305. * Parse dev_list, and add entries to the scsi_dev_info_list.
  306. * dev_list is of the form "vendor:product:flag,vendor:product:flag".
  307. * dev_list is modified via strsep. Can be called for command line
  308. * addition, for proc or mabye a sysfs interface.
  309. *
  310. * Returns: 0 if OK, -error on failure.
  311. **/
  312. static int scsi_dev_info_list_add_str(char *dev_list)
  313. {
  314. char *vendor, *model, *strflags, *next;
  315. char *next_check;
  316. int res = 0;
  317. next = dev_list;
  318. if (next && next[0] == '"') {
  319. /*
  320. * Ignore both the leading and trailing quote.
  321. */
  322. next++;
  323. next_check = ",\"";
  324. } else {
  325. next_check = ",";
  326. }
  327. /*
  328. * For the leading and trailing '"' case, the for loop comes
  329. * through the last time with vendor[0] == '\0'.
  330. */
  331. for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
  332. && (res == 0); vendor = strsep(&next, ":")) {
  333. strflags = NULL;
  334. model = strsep(&next, ":");
  335. if (model)
  336. strflags = strsep(&next, next_check);
  337. if (!model || !strflags) {
  338. printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
  339. " '%s'\n", __FUNCTION__, vendor, model,
  340. strflags);
  341. res = -EINVAL;
  342. } else
  343. res = scsi_dev_info_list_add(0 /* compatible */, vendor,
  344. model, strflags, 0);
  345. }
  346. return res;
  347. }
  348. /**
  349. * get_device_flags - get device specific flags from the dynamic device
  350. * list. Called during scan time.
  351. * @vendor: vendor name
  352. * @model: model name
  353. *
  354. * Description:
  355. * Search the scsi_dev_info_list for an entry matching @vendor and
  356. * @model, if found, return the matching flags value, else return
  357. * the host or global default settings.
  358. **/
  359. int scsi_get_device_flags(struct scsi_device *sdev,
  360. const unsigned char *vendor,
  361. const unsigned char *model)
  362. {
  363. struct scsi_dev_info_list *devinfo;
  364. unsigned int bflags;
  365. bflags = sdev->sdev_bflags;
  366. if (!bflags)
  367. bflags = scsi_default_dev_flags;
  368. list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
  369. if (devinfo->compatible) {
  370. /*
  371. * Behave like the older version of get_device_flags.
  372. */
  373. size_t max;
  374. /*
  375. * XXX why skip leading spaces? If an odd INQUIRY
  376. * value, that should have been part of the
  377. * scsi_static_device_list[] entry, such as " FOO"
  378. * rather than "FOO". Since this code is already
  379. * here, and we don't know what device it is
  380. * trying to work with, leave it as-is.
  381. */
  382. max = 8; /* max length of vendor */
  383. while ((max > 0) && *vendor == ' ') {
  384. max--;
  385. vendor++;
  386. }
  387. /*
  388. * XXX removing the following strlen() would be
  389. * good, using it means that for a an entry not in
  390. * the list, we scan every byte of every vendor
  391. * listed in scsi_static_device_list[], and never match
  392. * a single one (and still have to compare at
  393. * least the first byte of each vendor).
  394. */
  395. if (memcmp(devinfo->vendor, vendor,
  396. min(max, strlen(devinfo->vendor))))
  397. continue;
  398. /*
  399. * Skip spaces again.
  400. */
  401. max = 16; /* max length of model */
  402. while ((max > 0) && *model == ' ') {
  403. max--;
  404. model++;
  405. }
  406. if (memcmp(devinfo->model, model,
  407. min(max, strlen(devinfo->model))))
  408. continue;
  409. return devinfo->flags;
  410. } else {
  411. if (!memcmp(devinfo->vendor, vendor,
  412. sizeof(devinfo->vendor)) &&
  413. !memcmp(devinfo->model, model,
  414. sizeof(devinfo->model)))
  415. return devinfo->flags;
  416. }
  417. }
  418. return bflags;
  419. }
  420. #ifdef CONFIG_SCSI_PROC_FS
  421. /*
  422. * proc_scsi_dev_info_read: dump the scsi_dev_info_list via
  423. * /proc/scsi/device_info
  424. */
  425. static int proc_scsi_devinfo_read(char *buffer, char **start,
  426. off_t offset, int length)
  427. {
  428. struct scsi_dev_info_list *devinfo;
  429. int size, len = 0;
  430. off_t begin = 0;
  431. off_t pos = 0;
  432. list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
  433. size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n",
  434. devinfo->vendor, devinfo->model, devinfo->flags);
  435. len += size;
  436. pos = begin + len;
  437. if (pos < offset) {
  438. len = 0;
  439. begin = pos;
  440. }
  441. if (pos > offset + length)
  442. goto stop_output;
  443. }
  444. stop_output:
  445. *start = buffer + (offset - begin); /* Start of wanted data */
  446. len -= (offset - begin); /* Start slop */
  447. if (len > length)
  448. len = length; /* Ending slop */
  449. return (len);
  450. }
  451. /*
  452. * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via
  453. * /proc.
  454. *
  455. * Use: echo "vendor:model:flag" > /proc/scsi/device_info
  456. *
  457. * To add a black/white list entry for vendor and model with an integer
  458. * value of flag to the scsi device info list.
  459. */
  460. static int proc_scsi_devinfo_write(struct file *file, const char __user *buf,
  461. unsigned long length, void *data)
  462. {
  463. char *buffer;
  464. int err = length;
  465. if (!buf || length>PAGE_SIZE)
  466. return -EINVAL;
  467. if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
  468. return -ENOMEM;
  469. if (copy_from_user(buffer, buf, length)) {
  470. err =-EFAULT;
  471. goto out;
  472. }
  473. if (length < PAGE_SIZE)
  474. buffer[length] = '\0';
  475. else if (buffer[PAGE_SIZE-1]) {
  476. err = -EINVAL;
  477. goto out;
  478. }
  479. scsi_dev_info_list_add_str(buffer);
  480. out:
  481. free_page((unsigned long)buffer);
  482. return err;
  483. }
  484. #endif /* CONFIG_SCSI_PROC_FS */
  485. module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
  486. MODULE_PARM_DESC(dev_flags,
  487. "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
  488. " list entries for vendor and model with an integer value of flags"
  489. " to the scsi device info list");
  490. module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
  491. MODULE_PARM_DESC(default_dev_flags,
  492. "scsi default device flag integer value");
  493. /**
  494. * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove
  495. * the scsi_dev_info_list.
  496. **/
  497. void scsi_exit_devinfo(void)
  498. {
  499. struct list_head *lh, *lh_next;
  500. struct scsi_dev_info_list *devinfo;
  501. #ifdef CONFIG_SCSI_PROC_FS
  502. remove_proc_entry("scsi/device_info", NULL);
  503. #endif
  504. list_for_each_safe(lh, lh_next, &scsi_dev_info_list) {
  505. devinfo = list_entry(lh, struct scsi_dev_info_list,
  506. dev_info_list);
  507. kfree(devinfo);
  508. }
  509. }
  510. /**
  511. * scsi_dev_list_init: set up the dynamic device list.
  512. * @dev_list: string of device flags to add
  513. *
  514. * Description:
  515. * Add command line @dev_list entries, then add
  516. * scsi_static_device_list entries to the scsi device info list.
  517. **/
  518. int __init scsi_init_devinfo(void)
  519. {
  520. #ifdef CONFIG_SCSI_PROC_FS
  521. struct proc_dir_entry *p;
  522. #endif
  523. int error, i;
  524. error = scsi_dev_info_list_add_str(scsi_dev_flags);
  525. if (error)
  526. return error;
  527. for (i = 0; scsi_static_device_list[i].vendor; i++) {
  528. error = scsi_dev_info_list_add(1 /* compatibile */,
  529. scsi_static_device_list[i].vendor,
  530. scsi_static_device_list[i].model,
  531. NULL,
  532. scsi_static_device_list[i].flags);
  533. if (error)
  534. goto out;
  535. }
  536. #ifdef CONFIG_SCSI_PROC_FS
  537. p = create_proc_entry("scsi/device_info", 0, NULL);
  538. if (!p) {
  539. error = -ENOMEM;
  540. goto out;
  541. }
  542. p->owner = THIS_MODULE;
  543. p->get_info = proc_scsi_devinfo_read;
  544. p->write_proc = proc_scsi_devinfo_write;
  545. #endif /* CONFIG_SCSI_PROC_FS */
  546. out:
  547. if (error)
  548. scsi_exit_devinfo();
  549. return error;
  550. }