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- #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 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_REPORTLUN2},
- {"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 | BLIST_TRY_VPD_PAGES}, /* 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},
- {"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
- {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
- {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
- {"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
- {"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},
- {"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC},
- {"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", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
- {"Promise", "", NULL, BLIST_SPARSELUN},
- {"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
- {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
- {"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
- {"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);
- /* this zero-pads the destination */
- strncpy(to, from, to_length);
- if (from_length < to_length && !compatible) {
- /*
- * space pad the string if it is short.
- */
- memset(&to[from_length], ' ', 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_find - find a matching dev_info list entry.
- * @vendor: vendor string
- * @model: model (product) string
- * @key: specify list to use
- *
- * Description:
- * Finds the first dev_info entry matching @vendor, @model
- * in list specified by @key.
- *
- * Returns: pointer to matching entry, or ERR_PTR on failure.
- **/
- static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
- const char *model, int key)
- {
- struct scsi_dev_info_list *devinfo;
- struct scsi_dev_info_list_table *devinfo_table =
- scsi_devinfo_lookup_by_key(key);
- size_t vmax, mmax;
- const char *vskip, *mskip;
- if (IS_ERR(devinfo_table))
- return (struct scsi_dev_info_list *) devinfo_table;
- /* Prepare for "compatible" matches */
- /*
- * 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.
- */
- vmax = sizeof(devinfo->vendor);
- vskip = vendor;
- while (vmax > 0 && *vskip == ' ') {
- vmax--;
- vskip++;
- }
- /* Also skip trailing spaces */
- while (vmax > 0 && vskip[vmax - 1] == ' ')
- --vmax;
- mmax = sizeof(devinfo->model);
- mskip = model;
- while (mmax > 0 && *mskip == ' ') {
- mmax--;
- mskip++;
- }
- while (mmax > 0 && mskip[mmax - 1] == ' ')
- --mmax;
- 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.
- */
- if (memcmp(devinfo->vendor, vskip, vmax) ||
- (vmax < sizeof(devinfo->vendor) &&
- devinfo->vendor[vmax]))
- continue;
- if (memcmp(devinfo->model, mskip, mmax) ||
- (mmax < sizeof(devinfo->model) &&
- devinfo->model[mmax]))
- continue;
- return devinfo;
- } else {
- if (!memcmp(devinfo->vendor, vendor,
- sizeof(devinfo->vendor)) &&
- !memcmp(devinfo->model, model,
- sizeof(devinfo->model)))
- return devinfo;
- }
- }
- return ERR_PTR(-ENOENT);
- }
- /**
- * 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 *found;
- found = scsi_dev_info_list_find(vendor, model, key);
- if (IS_ERR(found))
- return PTR_ERR(found);
- list_del(&found->dev_info_list);
- kfree(found);
- return 0;
- }
- 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;
- devinfo = scsi_dev_info_list_find(vendor, model, key);
- if (!IS_ERR(devinfo))
- return devinfo->flags;
- /* key or device not 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;
- }
|