#include <linux/blkdev.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <scsi/scsi_device.h> #include <scsi/scsi_devinfo.h> #include "scsi_priv.h" /* * scsi_dev_info_list: structure to hold black/white listed devices. */ struct scsi_dev_info_list { struct list_head dev_info_list; char vendor[8]; char model[16]; unsigned flags; unsigned compatible; /* for use with scsi_static_device_list entries */ }; struct scsi_dev_info_list_table { struct list_head node; /* our node for being on the master list */ struct list_head scsi_dev_info_list; /* head of dev info list */ const char *name; /* name of list for /proc (NULL for global) */ int key; /* unique numeric identifier */ }; static const char spaces[] = " "; /* 16 of them */ static unsigned scsi_default_dev_flags; static LIST_HEAD(scsi_dev_info_list); static char scsi_dev_flags[256]; /* * scsi_static_device_list: deprecated list of devices that require * settings that differ from the default, includes black-listed (broken) * devices. The entries here are added to the tail of scsi_dev_info_list * via scsi_dev_info_list_init. * * Do not add to this list, use the command line or proc interface to add * to the scsi_dev_info_list. This table will eventually go away. */ static struct { char *vendor; char *model; char *revision; /* revision known to be bad, unused */ unsigned flags; } scsi_static_device_list[] __initdata = { /* * The following devices are known not to tolerate a lun != 0 scan * for one reason or another. Some will respond to all luns, * others will lock up. */ {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */ {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */ {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */ {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */ {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */ {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */ {"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */ {"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */ {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */ {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */ {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */ {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */ {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */ {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */ {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */ {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */ {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */ {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */ {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */ {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */ /* * The following causes a failed REQUEST SENSE on lun 1 for * aha152x controller, which causes SCSI code to reset bus. */ {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, /* * The following causes a failed REQUEST SENSE on lun 1 for * aha152x controller, which causes SCSI code to reset bus. */ {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */ {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */ {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN}, {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN}, {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN}, {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN}, {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN}, {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */ {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */ /* * The following causes a failed REQUEST SENSE on lun 1 for * seagate controller, which causes SCSI code to reset bus. */ {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN}, {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */ /* * The following causes a failed REQUEST SENSE on lun 1 for * seagate controller, which causes SCSI code to reset bus. */ {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */ {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */ {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */ {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */ {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */ {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */ {"NEC", "D3856", "0009", BLIST_NOLUN}, {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */ {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */ {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */ {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */ {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */ {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN}, {"transtec", "T5008", "0001", BLIST_NOREPORTLUN }, {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */ {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */ {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */ {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */ {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */ /* * Other types of devices that have special flags. * Note that all USB devices should have the BLIST_INQUIRY_36 flag. */ {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN}, {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN}, {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36}, {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */ {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */ {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */ {"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */ {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */ {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN}, {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD}, {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN}, {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, {"DELL", "PV660F", NULL, BLIST_SPARSELUN}, {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN}, {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */ {"DELL", "PV530F", NULL, BLIST_SPARSELUN}, {"DELL", "PERCRAID", NULL, BLIST_FORCELUN}, {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */ {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */ {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN}, {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN}, {"easyRAID", "16P", NULL, BLIST_NOREPORTLUN}, {"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN}, {"easyRAID", "F8", NULL, BLIST_NOREPORTLUN}, {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36}, {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36}, {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */ {"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */ {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN}, {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD}, {"HP", "C1557A", NULL, BLIST_FORCELUN}, {"HP", "C3323-300", "4269", BLIST_NOTQ}, {"HP", "C5713A", NULL, BLIST_NOREPORTLUN}, {"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, {"IOMEGA", "Io20S *F", NULL, BLIST_KEY}, {"INSITE", "Floptical F*8I", NULL, BLIST_KEY}, {"INSITE", "I325VM", NULL, BLIST_KEY}, {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN}, {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36}, {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN}, {"MegaRAID", "LD", NULL, BLIST_FORCELUN}, {"MICROP", "4110", NULL, BLIST_NOTQ}, {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2}, {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN}, {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"NEC", "iStorage", NULL, BLIST_REPORTLUN2}, {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"Promise", "", NULL, BLIST_SPARSELUN}, {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */ {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ}, {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES}, {"SGI", "RAID3", "*", BLIST_SPARSELUN}, {"SGI", "RAID5", "*", BLIST_SPARSELUN}, {"SGI", "TP9100", "*", BLIST_REPORTLUN2}, {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36}, {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN}, {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */ {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR}, {"SUN", "T300", "*", BLIST_SPARSELUN}, {"SUN", "T4", "*", BLIST_SPARSELUN}, {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN}, {"Tornado-", "F4", "*", BLIST_NOREPORTLUN}, {"TOSHIBA", "CDROM", NULL, BLIST_ISROM}, {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM}, {"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */ {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN}, {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN}, {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN}, {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN}, {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN}, {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN}, { NULL, NULL, NULL, 0 }, }; static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key) { struct scsi_dev_info_list_table *devinfo_table; int found = 0; list_for_each_entry(devinfo_table, &scsi_dev_info_list, node) if (devinfo_table->key == key) { found = 1; break; } if (!found) return ERR_PTR(-EINVAL); return devinfo_table; } /* * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into * devinfo vendor and model strings. */ static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length, char *from, int compatible) { size_t from_length; from_length = strlen(from); strncpy(to, from, min(to_length, from_length)); if (from_length < to_length) { if (compatible) { /* * NUL terminate the string if it is short. */ to[from_length] = '\0'; } else { /* * space pad the string if it is short. */ strncpy(&to[from_length], spaces, to_length - from_length); } } if (from_length > to_length) printk(KERN_WARNING "%s: %s string '%s' is too long\n", __func__, name, from); } /** * scsi_dev_info_list_add - add one dev_info list entry. * @compatible: if true, null terminate short strings. Otherwise space pad. * @vendor: vendor string * @model: model (product) string * @strflags: integer string * @flags: if strflags NULL, use this flag value * * Description: * Create and add one dev_info entry for @vendor, @model, @strflags or * @flag. If @compatible, add to the tail of the list, do not space * pad, and set devinfo->compatible. The scsi_static_device_list entries * are added with @compatible 1 and @clfags NULL. * * Returns: 0 OK, -error on failure. **/ static int scsi_dev_info_list_add(int compatible, char *vendor, char *model, char *strflags, int flags) { return scsi_dev_info_list_add_keyed(compatible, vendor, model, strflags, flags, SCSI_DEVINFO_GLOBAL); } /** * scsi_dev_info_list_add_keyed - add one dev_info list entry. * @compatible: if true, null terminate short strings. Otherwise space pad. * @vendor: vendor string * @model: model (product) string * @strflags: integer string * @flags: if strflags NULL, use this flag value * @key: specify list to use * * Description: * Create and add one dev_info entry for @vendor, @model, * @strflags or @flag in list specified by @key. If @compatible, * add to the tail of the list, do not space pad, and set * devinfo->compatible. The scsi_static_device_list entries are * added with @compatible 1 and @clfags NULL. * * Returns: 0 OK, -error on failure. **/ int scsi_dev_info_list_add_keyed(int compatible, char *vendor, char *model, char *strflags, int flags, int key) { struct scsi_dev_info_list *devinfo; struct scsi_dev_info_list_table *devinfo_table = scsi_devinfo_lookup_by_key(key); if (IS_ERR(devinfo_table)) return PTR_ERR(devinfo_table); devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL); if (!devinfo) { printk(KERN_ERR "%s: no memory\n", __func__); return -ENOMEM; } scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor), vendor, compatible); scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model), model, compatible); if (strflags) devinfo->flags = simple_strtoul(strflags, NULL, 0); else devinfo->flags = flags; devinfo->compatible = compatible; if (compatible) list_add_tail(&devinfo->dev_info_list, &devinfo_table->scsi_dev_info_list); else list_add(&devinfo->dev_info_list, &devinfo_table->scsi_dev_info_list); return 0; } EXPORT_SYMBOL(scsi_dev_info_list_add_keyed); /** * scsi_dev_info_list_del_keyed - remove one dev_info list entry. * @vendor: vendor string * @model: model (product) string * @key: specify list to use * * Description: * Remove and destroy one dev_info entry for @vendor, @model * in list specified by @key. * * Returns: 0 OK, -error on failure. **/ int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key) { struct scsi_dev_info_list *devinfo, *found = NULL; struct scsi_dev_info_list_table *devinfo_table = scsi_devinfo_lookup_by_key(key); if (IS_ERR(devinfo_table)) return PTR_ERR(devinfo_table); list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, dev_info_list) { if (devinfo->compatible) { /* * Behave like the older version of get_device_flags. */ size_t max; /* * XXX why skip leading spaces? If an odd INQUIRY * value, that should have been part of the * scsi_static_device_list[] entry, such as " FOO" * rather than "FOO". Since this code is already * here, and we don't know what device it is * trying to work with, leave it as-is. */ max = 8; /* max length of vendor */ while ((max > 0) && *vendor == ' ') { max--; vendor++; } /* * XXX removing the following strlen() would be * good, using it means that for a an entry not in * the list, we scan every byte of every vendor * listed in scsi_static_device_list[], and never match * a single one (and still have to compare at * least the first byte of each vendor). */ if (memcmp(devinfo->vendor, vendor, min(max, strlen(devinfo->vendor)))) continue; /* * Skip spaces again. */ max = 16; /* max length of model */ while ((max > 0) && *model == ' ') { max--; model++; } if (memcmp(devinfo->model, model, min(max, strlen(devinfo->model)))) continue; found = devinfo; } else { if (!memcmp(devinfo->vendor, vendor, sizeof(devinfo->vendor)) && !memcmp(devinfo->model, model, sizeof(devinfo->model))) found = devinfo; } if (found) break; } if (found) { list_del(&found->dev_info_list); kfree(found); return 0; } return -ENOENT; } EXPORT_SYMBOL(scsi_dev_info_list_del_keyed); /** * scsi_dev_info_list_add_str - parse dev_list and add to the scsi_dev_info_list. * @dev_list: string of device flags to add * * Description: * Parse dev_list, and add entries to the scsi_dev_info_list. * dev_list is of the form "vendor:product:flag,vendor:product:flag". * dev_list is modified via strsep. Can be called for command line * addition, for proc or mabye a sysfs interface. * * Returns: 0 if OK, -error on failure. **/ static int scsi_dev_info_list_add_str(char *dev_list) { char *vendor, *model, *strflags, *next; char *next_check; int res = 0; next = dev_list; if (next && next[0] == '"') { /* * Ignore both the leading and trailing quote. */ next++; next_check = ",\""; } else { next_check = ","; } /* * For the leading and trailing '"' case, the for loop comes * through the last time with vendor[0] == '\0'. */ for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0') && (res == 0); vendor = strsep(&next, ":")) { strflags = NULL; model = strsep(&next, ":"); if (model) strflags = strsep(&next, next_check); if (!model || !strflags) { printk(KERN_ERR "%s: bad dev info string '%s' '%s'" " '%s'\n", __func__, vendor, model, strflags); res = -EINVAL; } else res = scsi_dev_info_list_add(0 /* compatible */, vendor, model, strflags, 0); } return res; } /** * get_device_flags - get device specific flags from the dynamic device list. * @sdev: &scsi_device to get flags for * @vendor: vendor name * @model: model name * * Description: * Search the global scsi_dev_info_list (specified by list zero) * for an entry matching @vendor and @model, if found, return the * matching flags value, else return the host or global default * settings. Called during scan time. **/ int scsi_get_device_flags(struct scsi_device *sdev, const unsigned char *vendor, const unsigned char *model) { return scsi_get_device_flags_keyed(sdev, vendor, model, SCSI_DEVINFO_GLOBAL); } /** * scsi_get_device_flags_keyed - get device specific flags from the dynamic device list * @sdev: &scsi_device to get flags for * @vendor: vendor name * @model: model name * @key: list to look up * * Description: * Search the scsi_dev_info_list specified by @key for an entry * matching @vendor and @model, if found, return the matching * flags value, else return the host or global default settings. * Called during scan time. **/ int scsi_get_device_flags_keyed(struct scsi_device *sdev, const unsigned char *vendor, const unsigned char *model, int key) { struct scsi_dev_info_list *devinfo; struct scsi_dev_info_list_table *devinfo_table; devinfo_table = scsi_devinfo_lookup_by_key(key); if (IS_ERR(devinfo_table)) return PTR_ERR(devinfo_table); list_for_each_entry(devinfo, &devinfo_table->scsi_dev_info_list, dev_info_list) { if (devinfo->compatible) { /* * Behave like the older version of get_device_flags. */ size_t max; /* * XXX why skip leading spaces? If an odd INQUIRY * value, that should have been part of the * scsi_static_device_list[] entry, such as " FOO" * rather than "FOO". Since this code is already * here, and we don't know what device it is * trying to work with, leave it as-is. */ max = 8; /* max length of vendor */ while ((max > 0) && *vendor == ' ') { max--; vendor++; } /* * XXX removing the following strlen() would be * good, using it means that for a an entry not in * the list, we scan every byte of every vendor * listed in scsi_static_device_list[], and never match * a single one (and still have to compare at * least the first byte of each vendor). */ if (memcmp(devinfo->vendor, vendor, min(max, strlen(devinfo->vendor)))) continue; /* * Skip spaces again. */ max = 16; /* max length of model */ while ((max > 0) && *model == ' ') { max--; model++; } if (memcmp(devinfo->model, model, min(max, strlen(devinfo->model)))) continue; return devinfo->flags; } else { if (!memcmp(devinfo->vendor, vendor, sizeof(devinfo->vendor)) && !memcmp(devinfo->model, model, sizeof(devinfo->model))) return devinfo->flags; } } /* nothing found, return nothing */ if (key != SCSI_DEVINFO_GLOBAL) return 0; /* except for the global list, where we have an exception */ if (sdev->sdev_bflags) return sdev->sdev_bflags; return scsi_default_dev_flags; } EXPORT_SYMBOL(scsi_get_device_flags_keyed); #ifdef CONFIG_SCSI_PROC_FS struct double_list { struct list_head *top; struct list_head *bottom; }; static int devinfo_seq_show(struct seq_file *m, void *v) { struct double_list *dl = v; struct scsi_dev_info_list_table *devinfo_table = list_entry(dl->top, struct scsi_dev_info_list_table, node); struct scsi_dev_info_list *devinfo = list_entry(dl->bottom, struct scsi_dev_info_list, dev_info_list); if (devinfo_table->scsi_dev_info_list.next == dl->bottom && devinfo_table->name) seq_printf(m, "[%s]:\n", devinfo_table->name); seq_printf(m, "'%.8s' '%.16s' 0x%x\n", devinfo->vendor, devinfo->model, devinfo->flags); return 0; } static void *devinfo_seq_start(struct seq_file *m, loff_t *ppos) { struct double_list *dl = kmalloc(sizeof(*dl), GFP_KERNEL); loff_t pos = *ppos; if (!dl) return NULL; list_for_each(dl->top, &scsi_dev_info_list) { struct scsi_dev_info_list_table *devinfo_table = list_entry(dl->top, struct scsi_dev_info_list_table, node); list_for_each(dl->bottom, &devinfo_table->scsi_dev_info_list) if (pos-- == 0) return dl; } kfree(dl); return NULL; } static void *devinfo_seq_next(struct seq_file *m, void *v, loff_t *ppos) { struct double_list *dl = v; struct scsi_dev_info_list_table *devinfo_table = list_entry(dl->top, struct scsi_dev_info_list_table, node); ++*ppos; dl->bottom = dl->bottom->next; while (&devinfo_table->scsi_dev_info_list == dl->bottom) { dl->top = dl->top->next; if (dl->top == &scsi_dev_info_list) { kfree(dl); return NULL; } devinfo_table = list_entry(dl->top, struct scsi_dev_info_list_table, node); dl->bottom = devinfo_table->scsi_dev_info_list.next; } return dl; } static void devinfo_seq_stop(struct seq_file *m, void *v) { kfree(v); } static const struct seq_operations scsi_devinfo_seq_ops = { .start = devinfo_seq_start, .next = devinfo_seq_next, .stop = devinfo_seq_stop, .show = devinfo_seq_show, }; static int proc_scsi_devinfo_open(struct inode *inode, struct file *file) { return seq_open(file, &scsi_devinfo_seq_ops); } /* * proc_scsi_dev_info_write - allow additions to scsi_dev_info_list via /proc. * * Description: Adds a black/white list entry for vendor and model with an * integer value of flag to the scsi device info list. * To use, echo "vendor:model:flag" > /proc/scsi/device_info */ static ssize_t proc_scsi_devinfo_write(struct file *file, const char __user *buf, size_t length, loff_t *ppos) { char *buffer; ssize_t err = length; if (!buf || length>PAGE_SIZE) return -EINVAL; if (!(buffer = (char *) __get_free_page(GFP_KERNEL))) return -ENOMEM; if (copy_from_user(buffer, buf, length)) { err =-EFAULT; goto out; } if (length < PAGE_SIZE) buffer[length] = '\0'; else if (buffer[PAGE_SIZE-1]) { err = -EINVAL; goto out; } scsi_dev_info_list_add_str(buffer); out: free_page((unsigned long)buffer); return err; } static const struct file_operations scsi_devinfo_proc_fops = { .owner = THIS_MODULE, .open = proc_scsi_devinfo_open, .read = seq_read, .write = proc_scsi_devinfo_write, .llseek = seq_lseek, .release = seq_release, }; #endif /* CONFIG_SCSI_PROC_FS */ module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0); MODULE_PARM_DESC(dev_flags, "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white" " list entries for vendor and model with an integer value of flags" " to the scsi device info list"); module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(default_dev_flags, "scsi default device flag integer value"); /** * scsi_exit_devinfo - remove /proc/scsi/device_info & the scsi_dev_info_list **/ void scsi_exit_devinfo(void) { #ifdef CONFIG_SCSI_PROC_FS remove_proc_entry("scsi/device_info", NULL); #endif scsi_dev_info_remove_list(SCSI_DEVINFO_GLOBAL); } /** * scsi_dev_info_add_list - add a new devinfo list * @key: key of the list to add * @name: Name of the list to add (for /proc/scsi/device_info) * * Adds the requested list, returns zero on success, -EEXIST if the * key is already registered to a list, or other error on failure. */ int scsi_dev_info_add_list(int key, const char *name) { struct scsi_dev_info_list_table *devinfo_table = scsi_devinfo_lookup_by_key(key); if (!IS_ERR(devinfo_table)) /* list already exists */ return -EEXIST; devinfo_table = kmalloc(sizeof(*devinfo_table), GFP_KERNEL); if (!devinfo_table) return -ENOMEM; INIT_LIST_HEAD(&devinfo_table->node); INIT_LIST_HEAD(&devinfo_table->scsi_dev_info_list); devinfo_table->name = name; devinfo_table->key = key; list_add_tail(&devinfo_table->node, &scsi_dev_info_list); return 0; } EXPORT_SYMBOL(scsi_dev_info_add_list); /** * scsi_dev_info_remove_list - destroy an added devinfo list * @key: key of the list to destroy * * Iterates over the entire list first, freeing all the values, then * frees the list itself. Returns 0 on success or -EINVAL if the key * can't be found. */ int scsi_dev_info_remove_list(int key) { struct list_head *lh, *lh_next; struct scsi_dev_info_list_table *devinfo_table = scsi_devinfo_lookup_by_key(key); if (IS_ERR(devinfo_table)) /* no such list */ return -EINVAL; /* remove from the master list */ list_del(&devinfo_table->node); list_for_each_safe(lh, lh_next, &devinfo_table->scsi_dev_info_list) { struct scsi_dev_info_list *devinfo; devinfo = list_entry(lh, struct scsi_dev_info_list, dev_info_list); kfree(devinfo); } kfree(devinfo_table); return 0; } EXPORT_SYMBOL(scsi_dev_info_remove_list); /** * scsi_init_devinfo - set up the dynamic device list. * * Description: * Add command line entries from scsi_dev_flags, then add * scsi_static_device_list entries to the scsi device info list. */ int __init scsi_init_devinfo(void) { #ifdef CONFIG_SCSI_PROC_FS struct proc_dir_entry *p; #endif int error, i; error = scsi_dev_info_add_list(SCSI_DEVINFO_GLOBAL, NULL); if (error) return error; error = scsi_dev_info_list_add_str(scsi_dev_flags); if (error) goto out; for (i = 0; scsi_static_device_list[i].vendor; i++) { error = scsi_dev_info_list_add(1 /* compatibile */, scsi_static_device_list[i].vendor, scsi_static_device_list[i].model, NULL, scsi_static_device_list[i].flags); if (error) goto out; } #ifdef CONFIG_SCSI_PROC_FS p = proc_create("scsi/device_info", 0, NULL, &scsi_devinfo_proc_fops); if (!p) { error = -ENOMEM; goto out; } #endif /* CONFIG_SCSI_PROC_FS */ out: if (error) scsi_exit_devinfo(); return error; }