diff options
Diffstat (limited to 'drivers/scsi/scsi_devinfo.c')
| -rw-r--r-- | drivers/scsi/scsi_devinfo.c | 886 |
1 files changed, 886 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c new file mode 100644 index 000000000..3fcaf10a9 --- /dev/null +++ b/drivers/scsi/scsi_devinfo.c @@ -0,0 +1,886 @@ +// SPDX-License-Identifier: GPL-2.0 + +#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]; + blist_flags_t 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 blist_flags_t 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 */ + blist_flags_t 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", NULL, BLIST_NOLUN}, /* scanjet iip */ + {"HP", "C2500A", NULL, 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 | BLIST_BORKEN}, + {"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}, + {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES | BLIST_NO_VPD_SIZE}, + {"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}, /* EMC CLARiiON, storage on LUN 0 */ + {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* EMC CLARiiON, no storage on LUN 0 */ + {"EMC", "Invista", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, + {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | + BLIST_REPORTLUN2 | BLIST_RETRY_ITF}, + {"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}, + {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1}, + {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, + {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */ + {"Generic", "Ultra HS-SD/MMC", "2.09", BLIST_IGN_MEDIA_CHANGE | 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 | BLIST_TRY_VPD_PAGES}, + {"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", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, + {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, + {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, + {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, + {"IBM", "2076", NULL, BLIST_NO_VPD_SIZE}, + {"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}, + {"Marvell", "91xx Config", "1.01", 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_MAX_1024 | 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}, + {"SKhynix", "H28U74301AMR", NULL, BLIST_SKIP_VPD_PAGES}, + {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"SUN", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"DELL", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"STK", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"NETAPP", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"LSI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"ENGENIO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"LENOVO", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"FUJITSU", "Universal Xport", "*", BLIST_NO_ULD_ATTACH}, + {"SanDisk", "Cruzer Blade", NULL, BLIST_TRY_VPD_PAGES | + BLIST_INQUIRY_36}, + {"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}, + {"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, blist_flags_t 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, blist_flags_t flags, + enum scsi_devinfo_key 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) { + unsigned long long val; + int ret = kstrtoull(strflags, 0, &val); + + if (ret != 0) { + kfree(devinfo); + return ret; + } + flags = (__force blist_flags_t)val; + } + if (flags & __BLIST_UNUSED_MASK) { + pr_err("scsi_devinfo (%s:%s): unsupported flags 0x%llx", + vendor, model, flags & __BLIST_UNUSED_MASK); + kfree(devinfo); + return -EINVAL; + } + 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: full vendor string + * @model: full 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, enum scsi_devinfo_key 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, mlen; + 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) { + /* + * vendor strings must be an exact match + */ + if (vmax != strnlen(devinfo->vendor, + sizeof(devinfo->vendor)) || + memcmp(devinfo->vendor, vskip, vmax)) + continue; + + /* + * @model specifies the full string, and + * must be larger or equal to devinfo->model + */ + mlen = strnlen(devinfo->model, sizeof(devinfo->model)); + if (mmax < mlen || memcmp(devinfo->model, mskip, mlen)) + 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, + enum scsi_devinfo_key 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; +} + +/** + * scsi_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. + **/ +blist_flags_t 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. + **/ +blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, + const unsigned char *vendor, + const unsigned char *model, + enum scsi_devinfo_key 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%llx\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 proc_ops scsi_devinfo_proc_ops = { + .proc_open = proc_scsi_devinfo_open, + .proc_read = seq_read, + .proc_write = proc_scsi_devinfo_write, + .proc_lseek = seq_lseek, + .proc_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, ullong, 0644); +MODULE_PARM_DESC(default_dev_flags, + "scsi default device flag uint64_t 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(enum scsi_devinfo_key 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(enum scsi_devinfo_key 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_ops); + if (!p) { + error = -ENOMEM; + goto out; + } +#endif /* CONFIG_SCSI_PROC_FS */ + + out: + if (error) + scsi_exit_devinfo(); + return error; +} |