LXR linux/include/scsi/scsi

   1#ifndef _SCSI_SCSI_DEVICE_H
   2#define _SCSI_SCSI_DEVICE_H
   3
   4#include <linux/list.h>
   5#include <linux/spinlock.h>
   6#include <linux/workqueue.h>
   7#include <linux/blkdev.h>
   8#include <scsi/scsi.h>
   9#include <linux/atomic.h>
  10
  11struct device;
  12struct request_queue;
  13struct scsi_cmnd;
  14struct scsi_lun;
  15struct scsi_sense_hdr;
  16
  17struct scsi_mode_data {
  18        __u32   length;
  19        __u16   block_descriptor_length;
  20        __u8    medium_type;
  21        __u8    device_specific;
  22        __u8    header_length;
  23        __u8    longlba:1;
  24};
  25
  26/*
  27 * sdev state: If you alter this, you also need to alter scsi_sysfs.c
  28 * (for the ascii descriptions) and the state model enforcer:
  29 * scsi_lib:scsi_device_set_state().
  30 */
  31enum scsi_device_state {
  32        SDEV_CREATED = 1,       /* device created but not added to sysfs
  33                                 * Only internal commands allowed (for inq) */
  34        SDEV_RUNNING,           /* device properly configured
  35                                 * All commands allowed */
  36        SDEV_CANCEL,            /* beginning to delete device
  37                                 * Only error handler commands allowed */
  38        SDEV_DEL,               /* device deleted 
  39                                 * no commands allowed */
  40        SDEV_QUIESCE,           /* Device quiescent.  No block commands
  41                                 * will be accepted, only specials (which
  42                                 * originate in the mid-layer) */
  43        SDEV_OFFLINE,           /* Device offlined (by error handling or
  44                                 * user request */
  45        SDEV_TRANSPORT_OFFLINE, /* Offlined by transport class error handler */
  46        SDEV_BLOCK,             /* Device blocked by scsi lld.  No
  47                                 * scsi commands from user or midlayer
  48                                 * should be issued to the scsi
  49                                 * lld. */
  50        SDEV_CREATED_BLOCK,     /* same as above but for created devices */
  51};
  52
  53enum scsi_device_event {
  54        SDEV_EVT_MEDIA_CHANGE   = 1,    /* media has changed */
  55        SDEV_EVT_INQUIRY_CHANGE_REPORTED,               /* 3F 03  UA reported */
  56        SDEV_EVT_CAPACITY_CHANGE_REPORTED,              /* 2A 09  UA reported */
  57        SDEV_EVT_SOFT_THRESHOLD_REACHED_REPORTED,       /* 38 07  UA reported */
  58        SDEV_EVT_MODE_PARAMETER_CHANGE_REPORTED,        /* 2A 01  UA reported */
  59        SDEV_EVT_LUN_CHANGE_REPORTED,                   /* 3F 0E  UA reported */
  60        SDEV_EVT_ALUA_STATE_CHANGE_REPORTED,            /* 2A 06  UA reported */
  61
  62        SDEV_EVT_FIRST          = SDEV_EVT_MEDIA_CHANGE,
  63        SDEV_EVT_LAST           = SDEV_EVT_ALUA_STATE_CHANGE_REPORTED,
  64
  65        SDEV_EVT_MAXBITS        = SDEV_EVT_LAST + 1
  66};
  67
  68struct scsi_event {
  69        enum scsi_device_event  evt_type;
  70        struct list_head        node;
  71
  72        /* put union of data structures, for non-simple event types,
  73         * here
  74         */
  75};
  76
  77struct scsi_device {
  78        struct Scsi_Host *host;
  79        struct request_queue *request_queue;
  80
  81        /* the next two are protected by the host->host_lock */
  82        struct list_head    siblings;   /* list of all devices on this host */
  83        struct list_head    same_target_siblings; /* just the devices sharing same target id */
  84
  85        atomic_t device_busy;           /* commands actually active on LLDD */
  86        atomic_t device_blocked;        /* Device returned QUEUE_FULL. */
  87
  88        spinlock_t list_lock;
  89        struct list_head cmd_list;      /* queue of in use SCSI Command structures */
  90        struct list_head starved_entry;
  91        struct scsi_cmnd *current_cmnd; /* currently active command */
  92        unsigned short queue_depth;     /* How deep of a queue we want */
  93        unsigned short max_queue_depth; /* max queue depth */
  94        unsigned short last_queue_full_depth; /* These two are used by */
  95        unsigned short last_queue_full_count; /* scsi_track_queue_full() */
  96        unsigned long last_queue_full_time;     /* last queue full time */
  97        unsigned long queue_ramp_up_period;     /* ramp up period in jiffies */
  98#define SCSI_DEFAULT_RAMP_UP_PERIOD     (120 * HZ)
  99
 100        unsigned long last_queue_ramp_up;       /* last queue ramp up time */
 101
 102        unsigned int id, channel;
 103        u64 lun;
 104        unsigned int manufacturer;      /* Manufacturer of device, for using 
 105                                         * vendor-specific cmd's */
 106        unsigned sector_size;   /* size in bytes */
 107
 108        void *hostdata;         /* available to low-level driver */
 109        char type;
 110        char scsi_level;
 111        char inq_periph_qual;   /* PQ from INQUIRY data */      
 112        struct mutex inquiry_mutex;
 113        unsigned char inquiry_len;      /* valid bytes in 'inquiry' */
 114        unsigned char * inquiry;        /* INQUIRY response data */
 115        const char * vendor;            /* [back_compat] point into 'inquiry' ... */
 116        const char * model;             /* ... after scan; point to static string */
 117        const char * rev;               /* ... "nullnullnullnull" before scan */
 118
 119#define SCSI_VPD_PG_LEN                255
 120        int vpd_pg83_len;
 121        unsigned char __rcu *vpd_pg83;
 122        int vpd_pg80_len;
 123        unsigned char __rcu *vpd_pg80;
 124        unsigned char current_tag;      /* current tag */
 125        struct scsi_target      *sdev_target;   /* used only for single_lun */
 126
 127        unsigned int    sdev_bflags; /* black/white flags as also found in
 128                                 * scsi_devinfo.[hc]. For now used only to
 129                                 * pass settings from slave_alloc to scsi
 130                                 * core. */
 131        unsigned int eh_timeout; /* Error handling timeout */
 132        unsigned removable:1;
 133        unsigned changed:1;     /* Data invalid due to media change */
 134        unsigned busy:1;        /* Used to prevent races */
 135        unsigned lockable:1;    /* Able to prevent media removal */
 136        unsigned locked:1;      /* Media removal disabled */
 137        unsigned borken:1;      /* Tell the Seagate driver to be 
 138                                 * painfully slow on this device */
 139        unsigned disconnect:1;  /* can disconnect */
 140        unsigned soft_reset:1;  /* Uses soft reset option */
 141        unsigned sdtr:1;        /* Device supports SDTR messages */
 142        unsigned wdtr:1;        /* Device supports WDTR messages */
 143        unsigned ppr:1;         /* Device supports PPR messages */
 144        unsigned tagged_supported:1;    /* Supports SCSI-II tagged queuing */
 145        unsigned simple_tags:1; /* simple queue tag messages are enabled */
 146        unsigned was_reset:1;   /* There was a bus reset on the bus for 
 147                                 * this device */
 148        unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN
 149                                     * because we did a bus reset. */
 150        unsigned use_10_for_rw:1; /* first try 10-byte read / write */
 151        unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */
 152        unsigned no_report_opcodes:1;   /* no REPORT SUPPORTED OPERATION CODES */
 153        unsigned no_write_same:1;       /* no WRITE SAME command */
 154        unsigned use_16_for_rw:1; /* Use read/write(16) over read/write(10) */
 155        unsigned skip_ms_page_8:1;      /* do not use MODE SENSE page 0x08 */
 156        unsigned skip_ms_page_3f:1;     /* do not use MODE SENSE page 0x3f */
 157        unsigned skip_vpd_pages:1;      /* do not read VPD pages */
 158        unsigned try_vpd_pages:1;       /* attempt to read VPD pages */
 159        unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */
 160        unsigned no_start_on_add:1;     /* do not issue start on add */
 161        unsigned allow_restart:1; /* issue START_UNIT in error handler */
 162        unsigned manage_start_stop:1;   /* Let HLD (sd) manage start/stop */
 163        unsigned start_stop_pwr_cond:1; /* Set power cond. in START_STOP_UNIT */
 164        unsigned no_uld_attach:1; /* disable connecting to upper level drivers */
 165        unsigned select_no_atn:1;
 166        unsigned fix_capacity:1;        /* READ_CAPACITY is too high by 1 */
 167        unsigned guess_capacity:1;      /* READ_CAPACITY might be too high by 1 */
 168        unsigned retry_hwerror:1;       /* Retry HARDWARE_ERROR */
 169        unsigned last_sector_bug:1;     /* do not use multisector accesses on
 170                                           SD_LAST_BUGGY_SECTORS */
 171        unsigned no_read_disc_info:1;   /* Avoid READ_DISC_INFO cmds */
 172        unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */
 173        unsigned try_rc_10_first:1;     /* Try READ_CAPACACITY_10 first */
 174        unsigned is_visible:1;  /* is the device visible in sysfs */
 175        unsigned wce_default_on:1;      /* Cache is ON by default */
 176        unsigned no_dif:1;      /* T10 PI (DIF) should be disabled */
 177        unsigned broken_fua:1;          /* Don't set FUA bit */
 178        unsigned lun_in_cdb:1;          /* Store LUN bits in CDB[1] */
 179
 180        atomic_t disk_events_disable_depth; /* disable depth for disk events */
 181
 182        DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */
 183        DECLARE_BITMAP(pending_events, SDEV_EVT_MAXBITS); /* pending events */
 184        struct list_head event_list;    /* asserted events */
 185        struct work_struct event_work;
 186
 187        unsigned int max_device_blocked; /* what device_blocked counts down from  */
 188#define SCSI_DEFAULT_DEVICE_BLOCKED     3
 189
 190        atomic_t iorequest_cnt;
 191        atomic_t iodone_cnt;
 192        atomic_t ioerr_cnt;
 193
 194        struct device           sdev_gendev,
 195                                sdev_dev;
 196
 197        struct execute_work     ew; /* used to get process context on put */
 198        struct work_struct      requeue_work;
 199
 200        struct scsi_device_handler *handler;
 201        void                    *handler_data;
 202
 203        enum scsi_device_state sdev_state;
 204        unsigned long           sdev_data[0];
 205} __attribute__((aligned(sizeof(unsigned long))));
 206
 207#define to_scsi_device(d)       \
 208        container_of(d, struct scsi_device, sdev_gendev)
 209#define class_to_sdev(d)        \
 210        container_of(d, struct scsi_device, sdev_dev)
 211#define transport_class_to_sdev(class_dev) \
 212        to_scsi_device(class_dev->parent)
 213
 214#define sdev_dbg(sdev, fmt, a...) \
 215        dev_dbg(&(sdev)->sdev_gendev, fmt, ##a)
 216
 217/*
 218 * like scmd_printk, but the device name is passed in
 219 * as a string pointer
 220 */
 221__printf(4, 5) void
 222sdev_prefix_printk(const char *, const struct scsi_device *, const char *,
 223                const char *, ...);
 224
 225#define sdev_printk(l, sdev, fmt, a...)                         \
 226        sdev_prefix_printk(l, sdev, NULL, fmt, ##a)
 227
 228__printf(3, 4) void
 229scmd_printk(const char *, const struct scsi_cmnd *, const char *, ...);
 230
 231#define scmd_dbg(scmd, fmt, a...)                                          \
 232        do {                                                               \
 233                if ((scmd)->request->rq_disk)                              \
 234                        sdev_dbg((scmd)->device, "[%s] " fmt,              \
 235                                 (scmd)->request->rq_disk->disk_name, ##a);\
 236                else                                                       \
 237                        sdev_dbg((scmd)->device, fmt, ##a);                \
 238        } while (0)
 239
 240enum scsi_target_state {
 241        STARGET_CREATED = 1,
 242        STARGET_RUNNING,
 243        STARGET_DEL,
 244};
 245
 246/*
 247 * scsi_target: representation of a scsi target, for now, this is only
 248 * used for single_lun devices. If no one has active IO to the target,
 249 * starget_sdev_user is NULL, else it points to the active sdev.
 250 */
 251struct scsi_target {
 252        struct scsi_device      *starget_sdev_user;
 253        struct list_head        siblings;
 254        struct list_head        devices;
 255        struct device           dev;
 256        struct kref             reap_ref; /* last put renders target invisible */
 257        unsigned int            channel;
 258        unsigned int            id; /* target id ... replace
 259                                     * scsi_device.id eventually */
 260        unsigned int            create:1; /* signal that it needs to be added */
 261        unsigned int            single_lun:1;   /* Indicates we should only
 262                                                 * allow I/O to one of the luns
 263                                                 * for the device at a time. */
 264        unsigned int            pdt_1f_for_no_lun:1;    /* PDT = 0x1f
 265                                                 * means no lun present. */
 266        unsigned int            no_report_luns:1;       /* Don't use
 267                                                 * REPORT LUNS for scanning. */
 268        unsigned int            expecting_lun_change:1; /* A device has reported
 269                                                 * a 3F/0E UA, other devices on
 270                                                 * the same target will also. */
 271        /* commands actually active on LLD. */
 272        atomic_t                target_busy;
 273        atomic_t                target_blocked;
 274
 275        /*
 276         * LLDs should set this in the slave_alloc host template callout.
 277         * If set to zero then there is not limit.
 278         */
 279        unsigned int            can_queue;
 280        unsigned int            max_target_blocked;
 281#define SCSI_DEFAULT_TARGET_BLOCKED     3
 282
 283        char                    scsi_level;
 284        enum scsi_target_state  state;
 285        void                    *hostdata; /* available to low-level driver */
 286        unsigned long           starget_data[0]; /* for the transport */
 287        /* starget_data must be the last element!!!! */
 288} __attribute__((aligned(sizeof(unsigned long))));
 289
 290#define to_scsi_target(d)       container_of(d, struct scsi_target, dev)
 291static inline struct scsi_target *scsi_target(struct scsi_device *sdev)
 292{
 293        return to_scsi_target(sdev->sdev_gendev.parent);
 294}
 295#define transport_class_to_starget(class_dev) \
 296        to_scsi_target(class_dev->parent)
 297
 298#define starget_printk(prefix, starget, fmt, a...)      \
 299        dev_printk(prefix, &(starget)->dev, fmt, ##a)
 300
 301extern struct scsi_device *__scsi_add_device(struct Scsi_Host *,
 302                uint, uint, u64, void *hostdata);
 303extern int scsi_add_device(struct Scsi_Host *host, uint channel,
 304                           uint target, u64 lun);
 305extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh);
 306extern void scsi_remove_device(struct scsi_device *);
 307extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh);
 308void scsi_attach_vpd(struct scsi_device *sdev);
 309
 310extern int scsi_device_get(struct scsi_device *);
 311extern void scsi_device_put(struct scsi_device *);
 312extern struct scsi_device *scsi_device_lookup(struct Scsi_Host *,
 313                                              uint, uint, u64);
 314extern struct scsi_device *__scsi_device_lookup(struct Scsi_Host *,
 315                                                uint, uint, u64);
 316extern struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *,
 317                                                        u64);
 318extern struct scsi_device *__scsi_device_lookup_by_target(struct scsi_target *,
 319                                                          u64);
 320extern void starget_for_each_device(struct scsi_target *, void *,
 321                     void (*fn)(struct scsi_device *, void *));
 322extern void __starget_for_each_device(struct scsi_target *, void *,
 323                                      void (*fn)(struct scsi_device *,
 324                                                 void *));
 325
 326/* only exposed to implement shost_for_each_device */
 327extern struct scsi_device *__scsi_iterate_devices(struct Scsi_Host *,
 328                                                  struct scsi_device *);
 329
 330/**
 331 * shost_for_each_device - iterate over all devices of a host
 332 * @sdev: the &struct scsi_device to use as a cursor
 333 * @shost: the &struct scsi_host to iterate over
 334 *
 335 * Iterator that returns each device attached to @shost.  This loop
 336 * takes a reference on each device and releases it at the end.  If
 337 * you break out of the loop, you must call scsi_device_put(sdev).
 338 */
 339#define shost_for_each_device(sdev, shost) \
 340        for ((sdev) = __scsi_iterate_devices((shost), NULL); \
 341             (sdev); \
 342             (sdev) = __scsi_iterate_devices((shost), (sdev)))
 343
 344/**
 345 * __shost_for_each_device - iterate over all devices of a host (UNLOCKED)
 346 * @sdev: the &struct scsi_device to use as a cursor
 347 * @shost: the &struct scsi_host to iterate over
 348 *
 349 * Iterator that returns each device attached to @shost.  It does _not_
 350 * take a reference on the scsi_device, so the whole loop must be
 351 * protected by shost->host_lock.
 352 *
 353 * Note: The only reason to use this is because you need to access the
 354 * device list in interrupt context.  Otherwise you really want to use
 355 * shost_for_each_device instead.
 356 */
 357#define __shost_for_each_device(sdev, shost) \
 358        list_for_each_entry((sdev), &((shost)->__devices), siblings)
 359
 360extern int scsi_change_queue_depth(struct scsi_device *, int);
 361extern int scsi_track_queue_full(struct scsi_device *, int);
 362
 363extern int scsi_set_medium_removal(struct scsi_device *, char);
 364
 365extern int scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
 366                           unsigned char *buffer, int len, int timeout,
 367                           int retries, struct scsi_mode_data *data,
 368                           struct scsi_sense_hdr *);
 369extern int scsi_mode_select(struct scsi_device *sdev, int pf, int sp,
 370                            int modepage, unsigned char *buffer, int len,
 371                            int timeout, int retries,
 372                            struct scsi_mode_data *data,
 373                            struct scsi_sense_hdr *);
 374extern int scsi_test_unit_ready(struct scsi_device *sdev, int timeout,
 375                                int retries, struct scsi_sense_hdr *sshdr);
 376extern int scsi_get_vpd_page(struct scsi_device *, u8 page, unsigned char *buf,
 377                             int buf_len);
 378extern int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer,
 379                              unsigned int len, unsigned char opcode);
 380extern int scsi_device_set_state(struct scsi_device *sdev,
 381                                 enum scsi_device_state state);
 382extern struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type,
 383                                          gfp_t gfpflags);
 384extern void sdev_evt_send(struct scsi_device *sdev, struct scsi_event *evt);
 385extern void sdev_evt_send_simple(struct scsi_device *sdev,
 386                          enum scsi_device_event evt_type, gfp_t gfpflags);
 387extern int scsi_device_quiesce(struct scsi_device *sdev);
 388extern void scsi_device_resume(struct scsi_device *sdev);
 389extern void scsi_target_quiesce(struct scsi_target *);
 390extern void scsi_target_resume(struct scsi_target *);
 391extern void scsi_scan_target(struct device *parent, unsigned int channel,
 392                             unsigned int id, u64 lun, int rescan);
 393extern void scsi_target_reap(struct scsi_target *);
 394extern void scsi_target_block(struct device *);
 395extern void scsi_target_unblock(struct device *, enum scsi_device_state);
 396extern void scsi_remove_target(struct device *);
 397extern const char *scsi_device_state_name(enum scsi_device_state);
 398extern int scsi_is_sdev_device(const struct device *);
 399extern int scsi_is_target_device(const struct device *);
 400extern int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd,
 401                        int data_direction, void *buffer, unsigned bufflen,
 402                        unsigned char *sense, int timeout, int retries,
 403                        u64 flags, int *resid);
 404extern int scsi_execute_req_flags(struct scsi_device *sdev,
 405        const unsigned char *cmd, int data_direction, void *buffer,
 406        unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout,
 407        int retries, int *resid, u64 flags);
 408static inline int scsi_execute_req(struct scsi_device *sdev,
 409        const unsigned char *cmd, int data_direction, void *buffer,
 410        unsigned bufflen, struct scsi_sense_hdr *sshdr, int timeout,
 411        int retries, int *resid)
 412{
 413        return scsi_execute_req_flags(sdev, cmd, data_direction, buffer,
 414                bufflen, sshdr, timeout, retries, resid, 0);
 415}
 416extern void sdev_disable_disk_events(struct scsi_device *sdev);
 417extern void sdev_enable_disk_events(struct scsi_device *sdev);
 418extern int scsi_vpd_lun_id(struct scsi_device *, char *, size_t);
 419extern int scsi_vpd_tpg_id(struct scsi_device *, int *);
 420
 421#ifdef CONFIG_PM
 422extern int scsi_autopm_get_device(struct scsi_device *);
 423extern void scsi_autopm_put_device(struct scsi_device *);
 424#else
 425static inline int scsi_autopm_get_device(struct scsi_device *d) { return 0; }
 426static inline void scsi_autopm_put_device(struct scsi_device *d) {}
 427#endif /* CONFIG_PM */
 428
 429static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev)
 430{
 431        return device_reprobe(&sdev->sdev_gendev);
 432}
 433
 434static inline unsigned int sdev_channel(struct scsi_device *sdev)
 435{
 436        return sdev->channel;
 437}
 438
 439static inline unsigned int sdev_id(struct scsi_device *sdev)
 440{
 441        return sdev->id;
 442}
 443
 444#define scmd_id(scmd) sdev_id((scmd)->device)
 445#define scmd_channel(scmd) sdev_channel((scmd)->device)
 446
 447/*
 448 * checks for positions of the SCSI state machine
 449 */
 450static inline int scsi_device_online(struct scsi_device *sdev)
 451{
 452        return (sdev->sdev_state != SDEV_OFFLINE &&
 453                sdev->sdev_state != SDEV_TRANSPORT_OFFLINE &&
 454                sdev->sdev_state != SDEV_DEL);
 455}
 456static inline int scsi_device_blocked(struct scsi_device *sdev)
 457{
 458        return sdev->sdev_state == SDEV_BLOCK ||
 459                sdev->sdev_state == SDEV_CREATED_BLOCK;
 460}
 461static inline int scsi_device_created(struct scsi_device *sdev)
 462{
 463        return sdev->sdev_state == SDEV_CREATED ||
 464                sdev->sdev_state == SDEV_CREATED_BLOCK;
 465}
 466
 467/* accessor functions for the SCSI parameters */
 468static inline int scsi_device_sync(struct scsi_device *sdev)
 469{
 470        return sdev->sdtr;
 471}
 472static inline int scsi_device_wide(struct scsi_device *sdev)
 473{
 474        return sdev->wdtr;
 475}
 476static inline int scsi_device_dt(struct scsi_device *sdev)
 477{
 478        return sdev->ppr;
 479}
 480static inline int scsi_device_dt_only(struct scsi_device *sdev)
 481{
 482        if (sdev->inquiry_len < 57)
 483                return 0;
 484        return (sdev->inquiry[56] & 0x0c) == 0x04;
 485}
 486static inline int scsi_device_ius(struct scsi_device *sdev)
 487{
 488        if (sdev->inquiry_len < 57)
 489                return 0;
 490        return sdev->inquiry[56] & 0x01;
 491}
 492static inline int scsi_device_qas(struct scsi_device *sdev)
 493{
 494        if (sdev->inquiry_len < 57)
 495                return 0;
 496        return sdev->inquiry[56] & 0x02;
 497}
 498static inline int scsi_device_enclosure(struct scsi_device *sdev)
 499{
 500        return sdev->inquiry ? (sdev->inquiry[6] & (1<<6)) : 1;
 501}
 502
 503static inline int scsi_device_protection(struct scsi_device *sdev)
 504{
 505        if (sdev->no_dif)
 506                return 0;
 507
 508        return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0);
 509}
 510
 511static inline int scsi_device_tpgs(struct scsi_device *sdev)
 512{
 513        return sdev->inquiry ? (sdev->inquiry[5] >> 4) & 0x3 : 0;
 514}
 515
 516#define MODULE_ALIAS_SCSI_DEVICE(type) \
 517        MODULE_ALIAS("scsi:t-" __stringify(type) "*")
 518#define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x"
 519
 520#endif /* _SCSI_SCSI_DEVICE_H */
 521