include/scsi/libsas.h

   1 /*
   2  * SAS host prototypes and structures header file
   3  *
   4  * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
   5  * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
   6  *
   7  * This file is licensed under GPLv2.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22  * USA
  23  *
  24  */
  25
  26 #ifndef _LIBSAS_H_
  27 #define _LIBSAS_H_
  28
  29
  30 #include <linux/timer.h>
  31 #include <linux/pci.h>
  32 #include <scsi/sas.h>
  33 #include <linux/libata.h>
  34 #include <linux/list.h>
  35 #include <scsi/scsi_device.h>
  36 #include <scsi/scsi_cmnd.h>
  37 #include <scsi/scsi_transport_sas.h>
  38 #include <linux/scatterlist.h>
  39 #include <linux/slab.h>
  40
  41 struct block_device;
  42
  43 enum sas_class {
  44         SAS,
  45         EXPANDER
  46 };
  47
  48 enum sas_phy_role {
  49         PHY_ROLE_NONE = 0,
  50         PHY_ROLE_TARGET = 0x40,
  51         PHY_ROLE_INITIATOR = 0x80,
  52 };
  53
  54 enum sas_phy_type {
  55         PHY_TYPE_PHYSICAL,
  56         PHY_TYPE_VIRTUAL
  57 };
  58
  59 /* The events are mnemonically described in sas_dump.c
  60  * so when updating/adding events here, please also
  61  * update the other file too.
  62  */
  63 enum ha_event {
  64         HAE_RESET             = 0U,
  65         HA_NUM_EVENTS         = 1,
  66 };
  67
  68 enum port_event {
  69         PORTE_BYTES_DMAED     = 0U,
  70         PORTE_BROADCAST_RCVD  = 1,
  71         PORTE_LINK_RESET_ERR  = 2,
  72         PORTE_TIMER_EVENT     = 3,
  73         PORTE_HARD_RESET      = 4,
  74         PORT_NUM_EVENTS       = 5,
  75 };
  76
  77 enum phy_event {
  78         PHYE_LOSS_OF_SIGNAL   = 0U,
  79         PHYE_OOB_DONE         = 1,
  80         PHYE_OOB_ERROR        = 2,
  81         PHYE_SPINUP_HOLD      = 3, /* hot plug SATA, no COMWAKE sent */
  82         PHY_NUM_EVENTS        = 4,
  83 };
  84
  85 enum discover_event {
  86         DISCE_DISCOVER_DOMAIN   = 0U,
  87         DISCE_REVALIDATE_DOMAIN = 1,
  88         DISCE_PORT_GONE         = 2,
  89         DISC_NUM_EVENTS         = 3,
  90 };
  91
  92 /* ---------- Expander Devices ---------- */
  93
  94 #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj)
  95 #define to_dev_attr(_attr)  container_of(_attr, struct domain_dev_attribute,\
  96                                          attr)
  97
  98 enum routing_attribute {
  99         DIRECT_ROUTING,
 100         SUBTRACTIVE_ROUTING,
 101         TABLE_ROUTING,
 102 };
 103
 104 enum ex_phy_state {
 105         PHY_EMPTY,
 106         PHY_VACANT,
 107         PHY_NOT_PRESENT,
 108         PHY_DEVICE_DISCOVERED
 109 };
 110
 111 struct ex_phy {
 112         int    phy_id;
 113
 114         enum ex_phy_state phy_state;
 115
 116         enum sas_dev_type attached_dev_type;
 117         enum sas_linkrate linkrate;
 118
 119         u8   attached_sata_host:1;
 120         u8   attached_sata_dev:1;
 121         u8   attached_sata_ps:1;
 122
 123         enum sas_protocol attached_tproto;
 124         enum sas_protocol attached_iproto;
 125
 126         u8   attached_sas_addr[SAS_ADDR_SIZE];
 127         u8   attached_phy_id;
 128
 129         u8   phy_change_count;
 130         enum routing_attribute routing_attr;
 131         u8   virtual:1;
 132
 133         int  last_da_index;
 134
 135         struct sas_phy *phy;
 136         struct sas_port *port;
 137 };
 138
 139 struct expander_device {
 140         struct list_head children;
 141
 142         u16    ex_change_count;
 143         u16    max_route_indexes;
 144         u8     num_phys;
 145
 146         u8     t2t_supp:1;
 147         u8     configuring:1;
 148         u8     conf_route_table:1;
 149
 150         u8     enclosure_logical_id[8];
 151
 152         struct ex_phy *ex_phy;
 153         struct sas_port *parent_port;
 154 };
 155
 156 /* ---------- SATA device ---------- */
 157 enum ata_command_set {
 158         ATA_COMMAND_SET   = 0,
 159         ATAPI_COMMAND_SET = 1,
 160 };
 161
 162 struct sata_device {
 163         enum   ata_command_set command_set;
 164         struct smp_resp        rps_resp; /* report_phy_sata_resp */
 165         __le16 *identify_device;
 166         __le16 *identify_packet_device;
 167
 168         u8     port_no;        /* port number, if this is a PM (Port) */
 169         struct list_head children; /* PM Ports if this is a PM */
 170
 171         struct ata_port *ap;
 172         struct ata_host ata_host;
 173         struct ata_taskfile tf;
 174         u32 sstatus;
 175         u32 serror;
 176         u32 scontrol;
 177 };
 178
 179 /* ---------- Domain device ---------- */
 180 struct domain_device {
 181         enum sas_dev_type dev_type;
 182
 183         enum sas_linkrate linkrate;
 184         enum sas_linkrate min_linkrate;
 185         enum sas_linkrate max_linkrate;
 186
 187         int  pathways;
 188
 189         struct domain_device *parent;
 190         struct list_head siblings; /* devices on the same level */
 191         struct asd_sas_port *port;        /* shortcut to root of the tree */
 192
 193         struct list_head dev_list_node;
 194
 195         enum sas_protocol    iproto;
 196         enum sas_protocol    tproto;
 197
 198         struct sas_rphy *rphy;
 199
 200         u8  sas_addr[SAS_ADDR_SIZE];
 201         u8  hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
 202
 203         u8  frame_rcvd[32];
 204
 205         union {
 206                 struct expander_device ex_dev;
 207                 struct sata_device     sata_dev; /* STP & directly attached */
 208         };
 209
 210         void *lldd_dev;
 211         int gone;
 212 };
 213
 214 struct sas_discovery_event {
 215         struct work_struct work;
 216         struct asd_sas_port *port;
 217 };
 218
 219 struct sas_discovery {
 220         spinlock_t disc_event_lock;
 221         struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
 222         unsigned long    pending;
 223         u8     fanout_sas_addr[8];
 224         u8     eeds_a[8];
 225         u8     eeds_b[8];
 226         int    max_level;
 227 };
 228
 229
 230 /* The port struct is Class:RW, driver:RO */
 231 struct asd_sas_port {
 232 /* private: */
 233         struct completion port_gone_completion;
 234
 235         struct sas_discovery disc;
 236         struct domain_device *port_dev;
 237         spinlock_t dev_list_lock;
 238         struct list_head dev_list;
 239         enum   sas_linkrate linkrate;
 240
 241         struct sas_phy *phy;
 242         struct work_struct work;
 243
 244 /* public: */
 245         int id;
 246
 247         enum sas_class   class;
 248         u8               sas_addr[SAS_ADDR_SIZE];
 249         u8               attached_sas_addr[SAS_ADDR_SIZE];
 250         enum sas_protocol   iproto;
 251         enum sas_protocol   tproto;
 252
 253         enum sas_oob_mode oob_mode;
 254
 255         spinlock_t       phy_list_lock;
 256         struct list_head phy_list;
 257         int              num_phys;
 258         u32              phy_mask;
 259
 260         struct sas_ha_struct *ha;
 261
 262         struct sas_port *port;
 263
 264         void *lldd_port;          /* not touched by the sas class code */
 265 };
 266
 267 struct asd_sas_event {
 268         struct work_struct work;
 269         struct asd_sas_phy *phy;
 270 };
 271
 272 /* The phy pretty much is controlled by the LLDD.
 273  * The class only reads those fields.
 274  */
 275 struct asd_sas_phy {
 276 /* private: */
 277         /* protected by ha->event_lock */
 278         struct asd_sas_event   port_events[PORT_NUM_EVENTS];
 279         struct asd_sas_event   phy_events[PHY_NUM_EVENTS];
 280
 281         unsigned long port_events_pending;
 282         unsigned long phy_events_pending;
 283
 284         int error;
 285
 286         struct sas_phy *phy;
 287
 288 /* public: */
 289         /* The following are class:RO, driver:R/W */
 290         int            enabled;   /* must be set */
 291
 292         int            id;        /* must be set */
 293         enum sas_class class;
 294         enum sas_protocol iproto;
 295         enum sas_protocol tproto;
 296
 297         enum sas_phy_type  type;
 298         enum sas_phy_role  role;
 299         enum sas_oob_mode  oob_mode;
 300         enum sas_linkrate linkrate;
 301
 302         u8   *sas_addr;           /* must be set */
 303         u8   attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */
 304
 305         spinlock_t     frame_rcvd_lock;
 306         u8             *frame_rcvd; /* must be set */
 307         int            frame_rcvd_size;
 308
 309         spinlock_t     sas_prim_lock;
 310         u32            sas_prim;
 311
 312         struct list_head port_phy_el; /* driver:RO */
 313         struct asd_sas_port      *port; /* Class:RW, driver: RO */
 314
 315         struct sas_ha_struct *ha; /* may be set; the class sets it anyway */
 316
 317         void *lldd_phy;           /* not touched by the sas_class_code */
 318 };
 319
 320 struct scsi_core {
 321         struct Scsi_Host *shost;
 322
 323         spinlock_t        task_queue_lock;
 324         struct list_head  task_queue;
 325         int               task_queue_size;
 326
 327         struct task_struct *queue_thread;
 328 };
 329
 330 struct sas_ha_event {
 331         struct work_struct work;
 332         struct sas_ha_struct *ha;
 333 };
 334
 335 enum sas_ha_state {
 336         SAS_HA_REGISTERED,
 337         SAS_HA_UNREGISTERED
 338 };
 339
 340 struct sas_ha_struct {
 341 /* private: */
 342         spinlock_t       event_lock;
 343         struct sas_ha_event ha_events[HA_NUM_EVENTS];
 344         unsigned long    pending;
 345
 346         enum sas_ha_state state;
 347         spinlock_t        state_lock;
 348
 349         struct scsi_core core;
 350
 351 /* public: */
 352         char *sas_ha_name;
 353         struct device *dev;       /* should be set */
 354         struct module *lldd_module; /* should be set */
 355
 356         u8 *sas_addr;             /* must be set */
 357         u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
 358
 359         spinlock_t      phy_port_lock;
 360         struct asd_sas_phy  **sas_phy; /* array of valid pointers, must be set */
 361         struct asd_sas_port **sas_port; /* array of valid pointers, must be set */
 362         int             num_phys; /* must be set, gt 0, static */
 363
 364         /* The class calls this to send a task for execution. */
 365         int lldd_max_execute_num;
 366         int lldd_queue_size;
 367         int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
 368                                 * their siblings when forming wide ports */
 369
 370         /* LLDD calls these to notify the class of an event. */
 371         void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event);
 372         void (*notify_port_event)(struct asd_sas_phy *, enum port_event);
 373         void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event);
 374
 375         void *lldd_ha;            /* not touched by sas class code */
 376
 377         struct list_head eh_done_q;
 378 };
 379
 380 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata)
 381
 382 static inline struct domain_device *
 383 starget_to_domain_dev(struct scsi_target *starget) {
 384         return starget->hostdata;
 385 }
 386
 387 static inline struct domain_device *
 388 sdev_to_domain_dev(struct scsi_device *sdev) {
 389         return starget_to_domain_dev(sdev->sdev_target);
 390 }
 391
 392 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev)
 393 {
 394         return &dev->sata_dev.ap->link.device[0];
 395 }
 396
 397 static inline struct domain_device *
 398 cmd_to_domain_dev(struct scsi_cmnd *cmd)
 399 {
 400         return sdev_to_domain_dev(cmd->device);
 401 }
 402
 403 void sas_hash_addr(u8 *hashed, const u8 *sas_addr);
 404
 405 /* Before calling a notify event, LLDD should use this function
 406  * when the link is severed (possibly from its tasklet).
 407  * The idea is that the Class only reads those, while the LLDD,
 408  * can R/W these (thus avoiding a race).
 409  */
 410 static inline void sas_phy_disconnected(struct asd_sas_phy *phy)
 411 {
 412         phy->oob_mode = OOB_NOT_CONNECTED;
 413         phy->linkrate = SAS_LINK_RATE_UNKNOWN;
 414 }
 415
 416 static inline unsigned int to_sas_gpio_od(int device, int bit)
 417 {
 418         return 3 * device + bit;
 419 }
 420
 421 #ifdef CONFIG_SCSI_SAS_HOST_SMP
 422 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count);
 423 #else
 424 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count)
 425 {
 426         return -1;
 427 }
 428 #endif
 429
 430 /* ---------- Tasks ---------- */
 431 /*
 432       service_response |  SAS_TASK_COMPLETE  |  SAS_TASK_UNDELIVERED |
 433   exec_status          |                     |                       |
 434   ---------------------+---------------------+-----------------------+
 435        SAM_...         |         X           |                       |
 436        DEV_NO_RESPONSE |         X           |           X           |
 437        INTERRUPTED     |         X           |                       |
 438        QUEUE_FULL      |                     |           X           |
 439        DEVICE_UNKNOWN  |                     |           X           |
 440        SG_ERR          |                     |           X           |
 441   ---------------------+---------------------+-----------------------+
 442  */
 443
 444 enum service_response {
 445         SAS_TASK_COMPLETE,
 446         SAS_TASK_UNDELIVERED = -1,
 447 };
 448
 449 enum exec_status {
 450         /* The SAM_STAT_.. codes fit in the lower 6 bits */
 451
 452         SAS_DEV_NO_RESPONSE = 0x80,
 453         SAS_DATA_UNDERRUN,
 454         SAS_DATA_OVERRUN,
 455         SAS_INTERRUPTED,
 456         SAS_QUEUE_FULL,
 457         SAS_DEVICE_UNKNOWN,
 458         SAS_SG_ERR,
 459         SAS_OPEN_REJECT,
 460         SAS_OPEN_TO,
 461         SAS_PROTO_RESPONSE,
 462         SAS_PHY_DOWN,
 463         SAS_NAK_R_ERR,
 464         SAS_PENDING,
 465         SAS_ABORTED_TASK,
 466 };
 467
 468 /* When a task finishes with a response, the LLDD examines the
 469  * response:
 470  *      - For an ATA task task_status_struct::stat is set to
 471  * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the
 472  * contents of struct ata_task_resp.
 473  *      - For SSP tasks, if no data is present or status/TMF response
 474  * is valid, task_status_struct::stat is set.  If data is present
 475  * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets
 476  * task_status_struct::buf_valid_size, and task_status_struct::stat is
 477  * set to SAM_CHECK_COND.
 478  *
 479  * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp
 480  * for ATA task.
 481  *
 482  * "frame_len" is the total frame length, which could be more or less
 483  * than actually copied.
 484  *
 485  * Tasks ending with response, always set the residual field.
 486  */
 487 struct ata_task_resp {
 488         u16  frame_len;
 489         u8   ending_fis[24];      /* dev to host or data-in */
 490         u32  sstatus;
 491         u32  serror;
 492         u32  scontrol;
 493         u32  sactive;
 494 };
 495
 496 #define SAS_STATUS_BUF_SIZE 96
 497
 498 struct task_status_struct {
 499         enum service_response resp;
 500         enum exec_status      stat;
 501         int  buf_valid_size;
 502
 503         u8   buf[SAS_STATUS_BUF_SIZE];
 504
 505         u32  residual;
 506         enum sas_open_rej_reason open_rej_reason;
 507 };
 508
 509 /* ATA and ATAPI task queuable to a SAS LLDD.
 510  */
 511 struct sas_ata_task {
 512         struct host_to_dev_fis fis;
 513         u8     atapi_packet[16];  /* 0 if not ATAPI task */
 514
 515         u8     retry_count;       /* hardware retry, should be > 0 */
 516
 517         u8     dma_xfer:1;        /* PIO:0 or DMA:1 */
 518         u8     use_ncq:1;
 519         u8     set_affil_pol:1;
 520         u8     stp_affil_pol:1;
 521
 522         u8     device_control_reg_update:1;
 523 };
 524
 525 struct sas_smp_task {
 526         struct scatterlist smp_req;
 527         struct scatterlist smp_resp;
 528 };
 529
 530 enum task_attribute {
 531         TASK_ATTR_SIMPLE = 0,
 532         TASK_ATTR_HOQ    = 1,
 533         TASK_ATTR_ORDERED= 2,
 534         TASK_ATTR_ACA    = 4,
 535 };
 536
 537 struct sas_ssp_task {
 538         u8     retry_count;       /* hardware retry, should be > 0 */
 539
 540         u8     LUN[8];
 541         u8     enable_first_burst:1;
 542         enum   task_attribute task_attr;
 543         u8     task_prio;
 544         u8     cdb[16];
 545 };
 546
 547 struct sas_task {
 548         struct domain_device *dev;
 549         struct list_head      list;
 550
 551         spinlock_t   task_state_lock;
 552         unsigned     task_state_flags;
 553
 554         enum   sas_protocol      task_proto;
 555
 556         /* Used by the discovery code. */
 557         struct timer_list     timer;
 558         struct completion     completion;
 559
 560         union {
 561                 struct sas_ata_task ata_task;
 562                 struct sas_smp_task smp_task;
 563                 struct sas_ssp_task ssp_task;
 564         };
 565
 566         struct scatterlist *scatter;
 567         int    num_scatter;
 568         u32    total_xfer_len;
 569         u8     data_dir:2;        /* Use PCI_DMA_... */
 570
 571         struct task_status_struct task_status;
 572         void   (*task_done)(struct sas_task *);
 573
 574         void   *lldd_task;        /* for use by LLDDs */
 575         void   *uldd_task;
 576
 577         struct work_struct abort_work;
 578 };
 579
 580 #define SAS_TASK_STATE_PENDING      1
 581 #define SAS_TASK_STATE_DONE         2
 582 #define SAS_TASK_STATE_ABORTED      4
 583 #define SAS_TASK_NEED_DEV_RESET     8
 584 #define SAS_TASK_AT_INITIATOR       16
 585
 586 extern struct sas_task *sas_alloc_task(gfp_t flags);
 587 extern void sas_free_task(struct sas_task *task);
 588
 589 struct sas_domain_function_template {
 590         /* The class calls these to notify the LLDD of an event. */
 591         void (*lldd_port_formed)(struct asd_sas_phy *);
 592         void (*lldd_port_deformed)(struct asd_sas_phy *);
 593
 594         /* The class calls these when a device is found or gone. */
 595         int  (*lldd_dev_found)(struct domain_device *);
 596         void (*lldd_dev_gone)(struct domain_device *);
 597
 598         int (*lldd_execute_task)(struct sas_task *, int num,
 599                                  gfp_t gfp_flags);
 600
 601         /* Task Management Functions. Must be called from process context. */
 602         int (*lldd_abort_task)(struct sas_task *);
 603         int (*lldd_abort_task_set)(struct domain_device *, u8 *lun);
 604         int (*lldd_clear_aca)(struct domain_device *, u8 *lun);
 605         int (*lldd_clear_task_set)(struct domain_device *, u8 *lun);
 606         int (*lldd_I_T_nexus_reset)(struct domain_device *);
 607         int (*lldd_ata_soft_reset)(struct domain_device *);
 608         int (*lldd_lu_reset)(struct domain_device *, u8 *lun);
 609         int (*lldd_query_task)(struct sas_task *);
 610
 611         /* Port and Adapter management */
 612         int (*lldd_clear_nexus_port)(struct asd_sas_port *);
 613         int (*lldd_clear_nexus_ha)(struct sas_ha_struct *);
 614
 615         /* Phy management */
 616         int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *);
 617
 618         /* GPIO support */
 619         int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type,
 620                                u8 reg_index, u8 reg_count, u8 *write_data);
 621 };
 622
 623 extern int sas_register_ha(struct sas_ha_struct *);
 624 extern int sas_unregister_ha(struct sas_ha_struct *);
 625
 626 int sas_set_phy_speed(struct sas_phy *phy,
 627                       struct sas_phy_linkrates *rates);
 628 int sas_phy_enable(struct sas_phy *phy, int enabled);
 629 int sas_phy_reset(struct sas_phy *phy, int hard_reset);
 630 int sas_queue_up(struct sas_task *task);
 631 extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *);
 632 extern int sas_target_alloc(struct scsi_target *);
 633 extern int sas_slave_alloc(struct scsi_device *);
 634 extern int sas_slave_configure(struct scsi_device *);
 635 extern void sas_slave_destroy(struct scsi_device *);
 636 extern int sas_change_queue_depth(struct scsi_device *, int new_depth,
 637                                   int reason);
 638 extern int sas_change_queue_type(struct scsi_device *, int qt);
 639 extern int sas_bios_param(struct scsi_device *,
 640                           struct block_device *,
 641                           sector_t capacity, int *hsc);
 642 extern struct scsi_transport_template *
 643 sas_domain_attach_transport(struct sas_domain_function_template *);
 644 extern void sas_domain_release_transport(struct scsi_transport_template *);
 645
 646 int  sas_discover_root_expander(struct domain_device *);
 647
 648 void sas_init_ex_attr(void);
 649
 650 int  sas_ex_revalidate_domain(struct domain_device *);
 651
 652 void sas_unregister_domain_devices(struct asd_sas_port *port);
 653 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *);
 654 int  sas_discover_event(struct asd_sas_port *, enum discover_event ev);
 655
 656 int  sas_discover_sata(struct domain_device *);
 657 int  sas_discover_end_dev(struct domain_device *);
 658
 659 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *);
 660
 661 void sas_init_dev(struct domain_device *);
 662
 663 void sas_task_abort(struct sas_task *);
 664 int __sas_task_abort(struct sas_task *);
 665 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
 666 int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd);
 667
 668 extern void sas_target_destroy(struct scsi_target *);
 669 extern int sas_slave_alloc(struct scsi_device *);
 670 extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg);
 671
 672 extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
 673                            struct request *req);
 674
 675 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
 676                                   struct ssp_response_iu *iu);
 677 struct sas_phy *sas_find_local_phy(struct domain_device *dev);
 678
 679 int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
 680
 681 #endif /* _SASLIB_H_ */