mirror of https://gitee.com/openkylin/linux.git
880 lines
29 KiB
C
880 lines
29 KiB
C
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#include <linux/blkdev.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/slab.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_devinfo.h>
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#include "scsi_priv.h"
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/*
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* scsi_dev_info_list: structure to hold black/white listed devices.
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*/
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struct scsi_dev_info_list {
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struct list_head dev_info_list;
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char vendor[8];
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char model[16];
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unsigned flags;
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unsigned compatible; /* for use with scsi_static_device_list entries */
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};
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struct scsi_dev_info_list_table {
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struct list_head node; /* our node for being on the master list */
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struct list_head scsi_dev_info_list; /* head of dev info list */
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const char *name; /* name of list for /proc (NULL for global) */
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int key; /* unique numeric identifier */
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};
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static const char spaces[] = " "; /* 16 of them */
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static unsigned scsi_default_dev_flags;
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static LIST_HEAD(scsi_dev_info_list);
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static char scsi_dev_flags[256];
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/*
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* scsi_static_device_list: deprecated list of devices that require
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* settings that differ from the default, includes black-listed (broken)
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* devices. The entries here are added to the tail of scsi_dev_info_list
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* via scsi_dev_info_list_init.
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*
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* Do not add to this list, use the command line or proc interface to add
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* to the scsi_dev_info_list. This table will eventually go away.
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*/
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static struct {
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char *vendor;
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char *model;
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char *revision; /* revision known to be bad, unused */
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unsigned flags;
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} scsi_static_device_list[] __initdata = {
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/*
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* The following devices are known not to tolerate a lun != 0 scan
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* for one reason or another. Some will respond to all luns,
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* others will lock up.
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*/
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{"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */
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{"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */
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{"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */
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{"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */
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{"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */
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{"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */
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{"IBM", "2104-DU3", NULL, BLIST_NOLUN}, /* locks up */
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{"IBM", "2104-TU3", NULL, BLIST_NOLUN}, /* locks up */
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{"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */
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{"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */
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{"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */
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{"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */
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{"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */
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{"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */
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{"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */
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{"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */
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{"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
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{"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */
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{"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */
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{"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */
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/*
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* The following causes a failed REQUEST SENSE on lun 1 for
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* aha152x controller, which causes SCSI code to reset bus.
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*/
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{"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
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/*
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* The following causes a failed REQUEST SENSE on lun 1 for
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* aha152x controller, which causes SCSI code to reset bus.
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*/
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{"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
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{"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */
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{"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */
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{"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
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{"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
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{"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
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{"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
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{"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN},
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{"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */
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{"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */
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/*
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* The following causes a failed REQUEST SENSE on lun 1 for
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* seagate controller, which causes SCSI code to reset bus.
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*/
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{"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
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{"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */
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/*
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* The following causes a failed REQUEST SENSE on lun 1 for
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* seagate controller, which causes SCSI code to reset bus.
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*/
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{"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */
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{"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */
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{"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */
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{"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */
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{"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */
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{"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */
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{"NEC", "D3856", "0009", BLIST_NOLUN},
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{"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */
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{"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */
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{"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */
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{"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */
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{"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */
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{"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN},
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{"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
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{"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */
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{"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */
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{"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */
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{"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */
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{"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */
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/*
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* Other types of devices that have special flags.
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* Note that all USB devices should have the BLIST_INQUIRY_36 flag.
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*/
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{"3PARdata", "VV", NULL, BLIST_REPORTLUN2},
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{"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
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{"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
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{"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
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{"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
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{"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN},
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{"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
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{"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
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{"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
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{"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
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{"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
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{"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
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{"COMPAQ", "ARRAY CONTROLLER", NULL, BLIST_SPARSELUN | BLIST_LARGELUN |
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BLIST_MAX_512 | BLIST_REPORTLUN2}, /* Compaq RA4x00 */
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{"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN | BLIST_MAX_512}, /* Compaq RA4x00 */
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{"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
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{"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
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{"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
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{"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
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{"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
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{"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
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{"DELL", "PV660F", NULL, BLIST_SPARSELUN},
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{"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
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{"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
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{"DELL", "PV530F", NULL, BLIST_SPARSELUN},
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{"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
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{"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */
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{"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */
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{"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
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{"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
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{"easyRAID", "16P", NULL, BLIST_NOREPORTLUN},
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{"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
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{"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
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{"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
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{"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36},
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{"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36},
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{"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
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{"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
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{"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
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{"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
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{"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
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{"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HITACHI", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HITACHI", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HITACHI", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
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{"HP", "OPEN-", "*", BLIST_REPORTLUN2}, /* HP XP Arrays */
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{"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
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{"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
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{"HP", "C1557A", NULL, BLIST_FORCELUN},
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{"HP", "C3323-300", "4269", BLIST_NOTQ},
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{"HP", "C5713A", NULL, BLIST_NOREPORTLUN},
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{"HP", "DF400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HP", "DF500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HP", "DF600", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HP", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HP", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HP", "3390-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HP", "6586-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"HP", "6588-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
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{"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
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{"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
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{"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN},
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{"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
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{"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
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{"INSITE", "I325VM", NULL, BLIST_KEY},
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{"Intel", "Multi-Flex", NULL, BLIST_NO_RSOC},
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{"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
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{"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
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{"Marvell", "Console", NULL, BLIST_SKIP_VPD_PAGES},
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{"Marvell", "91xx Config", "1.01", BLIST_SKIP_VPD_PAGES},
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{"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
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{"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
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{"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
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{"MegaRAID", "LD", NULL, BLIST_FORCELUN},
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{"MICROP", "4110", NULL, BLIST_NOTQ},
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{"MSFT", "Virtual HD", NULL, BLIST_NO_RSOC},
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{"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
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{"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
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{"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"NEC", "iStorage", NULL, BLIST_REPORTLUN2},
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{"NETAPP", "LUN C-Mode", NULL, BLIST_SYNC_ALUA},
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{"NETAPP", "INF-01-00", NULL, BLIST_SYNC_ALUA},
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{"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
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{"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC},
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{"Promise", "", NULL, BLIST_SPARSELUN},
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{"QEMU", "QEMU CD-ROM", NULL, BLIST_SKIP_VPD_PAGES},
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{"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024},
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{"SYNOLOGY", "iSCSI Storage", NULL, BLIST_MAX_1024},
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{"QUANTUM", "XP34301", "1071", BLIST_NOTQ},
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{"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
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{"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
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{"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
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{"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
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{"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
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{"SGI", "RAID3", "*", BLIST_SPARSELUN},
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{"SGI", "RAID5", "*", BLIST_SPARSELUN},
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{"SGI", "TP9100", "*", BLIST_REPORTLUN2},
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{"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
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{"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
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{"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
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{"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
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{"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
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{"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
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{"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
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{"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
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{"SUN", "T300", "*", BLIST_SPARSELUN},
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{"SUN", "T4", "*", BLIST_SPARSELUN},
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{"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
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{"Tornado-", "F4", "*", BLIST_NOREPORTLUN},
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{"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
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{"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
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{"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
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{"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
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{"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
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{"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
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{"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
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{"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
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{"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
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{"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
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{ NULL, NULL, NULL, 0 },
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};
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static struct scsi_dev_info_list_table *scsi_devinfo_lookup_by_key(int key)
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{
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struct scsi_dev_info_list_table *devinfo_table;
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int found = 0;
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list_for_each_entry(devinfo_table, &scsi_dev_info_list, node)
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if (devinfo_table->key == key) {
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found = 1;
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break;
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}
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if (!found)
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return ERR_PTR(-EINVAL);
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return devinfo_table;
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}
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/*
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* scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
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* devinfo vendor and model strings.
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*/
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static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
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char *from, int compatible)
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{
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size_t from_length;
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from_length = strlen(from);
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strncpy(to, from, min(to_length, from_length));
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if (from_length < to_length) {
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if (compatible) {
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/*
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* NUL terminate the string if it is short.
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*/
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to[from_length] = '\0';
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} else {
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/*
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* space pad the string if it is short.
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*/
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strncpy(&to[from_length], spaces,
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to_length - from_length);
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}
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}
|
|
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 = 8; /* max length of vendor */
|
|
vskip = vendor;
|
|
while (vmax > 0 && *vskip == ' ') {
|
|
vmax--;
|
|
vskip++;
|
|
}
|
|
/* Also skip trailing spaces */
|
|
while (vmax > 0 && vskip[vmax - 1] == ' ')
|
|
--vmax;
|
|
|
|
mmax = 16; /* max length of 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) ||
|
|
devinfo->vendor[vmax])
|
|
continue;
|
|
if (memcmp(devinfo->model, mskip, mmax) ||
|
|
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;
|
|
int err;
|
|
|
|
devinfo = scsi_dev_info_list_find(vendor, model, key);
|
|
if (!IS_ERR(devinfo))
|
|
return devinfo->flags;
|
|
|
|
err = PTR_ERR(devinfo);
|
|
if (err != -ENOENT)
|
|
return err;
|
|
|
|
/* 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;
|
|
}
|