v4.19.13 snapshot.
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
new file mode 100644
index 0000000..c4cbfd0
--- /dev/null
+++ b/drivers/scsi/scsi_devinfo.c
@@ -0,0 +1,878 @@
+// 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},
+ {"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 */
+ {"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},
+ {"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},
+ {"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},
+ {"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},
+ {"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;
+}
+
+/**
+ * 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 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, 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_fops);
+ if (!p) {
+ error = -ENOMEM;
+ goto out;
+ }
+#endif /* CONFIG_SCSI_PROC_FS */
+
+ out:
+ if (error)
+ scsi_exit_devinfo();
+ return error;
+}