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         DISCE_PROBE             = 3,
  90         DISCE_DESTRUCT          = 4,
  91         DISC_NUM_EVENTS         = 5,
  92 };
  93
  94 /* ---------- Expander Devices ---------- */
  95
  96 #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj)
  97 #define to_dev_attr(_attr)  container_of(_attr, struct domain_dev_attribute,\
  98                                          attr)
  99
 100 enum routing_attribute {
 101         DIRECT_ROUTING,
 102         SUBTRACTIVE_ROUTING,
 103         TABLE_ROUTING,
 104 };
 105
 106 enum ex_phy_state {
 107         PHY_EMPTY,
 108         PHY_VACANT,
 109         PHY_NOT_PRESENT,
 110         PHY_DEVICE_DISCOVERED
 111 };
 112
 113 struct ex_phy {
 114         int    phy_id;
 115
 116         enum ex_phy_state phy_state;
 117
 118         enum sas_dev_type attached_dev_type;
 119         enum sas_linkrate linkrate;
 120
 121         u8   attached_sata_host:1;
 122         u8   attached_sata_dev:1;
 123         u8   attached_sata_ps:1;
 124
 125         enum sas_protocol attached_tproto;
 126         enum sas_protocol attached_iproto;
 127
 128         u8   attached_sas_addr[SAS_ADDR_SIZE];
 129         u8   attached_phy_id;
 130
 131         u8   phy_change_count;
 132         enum routing_attribute routing_attr;
 133         u8   virtual:1;
 134
 135         int  last_da_index;
 136
 137         struct sas_phy *phy;
 138         struct sas_port *port;
 139 };
 140
 141 struct expander_device {
 142         struct list_head children;
 143
 144         u16    ex_change_count;
 145         u16    max_route_indexes;
 146         u8     num_phys;
 147
 148         u8     t2t_supp:1;
 149         u8     configuring:1;
 150         u8     conf_route_table:1;
 151
 152         u8     enclosure_logical_id[8];
 153
 154         struct ex_phy *ex_phy;
 155         struct sas_port *parent_port;
 156
 157         struct mutex cmd_mutex;
 158 };
 159
 160 /* ---------- SATA device ---------- */
 161 enum ata_command_set {
 162         ATA_COMMAND_SET   = 0,
 163         ATAPI_COMMAND_SET = 1,
 164 };
 165
 166 struct sata_device {
 167         enum   ata_command_set command_set;
 168         struct smp_resp        rps_resp; /* report_phy_sata_resp */
 169         u8     port_no;        /* port number, if this is a PM (Port) */
 170         struct list_head children; /* PM Ports if this is a PM */
 171
 172         struct ata_port *ap;
 173         struct ata_host ata_host;
 174         struct ata_taskfile tf;
 175 };
 176
 177 enum {
 178         SAS_DEV_GONE,
 179         SAS_DEV_DESTROY,
 180 };
 181
 182 struct domain_device {
 183         spinlock_t done_lock;
 184         enum sas_dev_type dev_type;
 185
 186         enum sas_linkrate linkrate;
 187         enum sas_linkrate min_linkrate;
 188         enum sas_linkrate max_linkrate;
 189
 190         int  pathways;
 191
 192         struct domain_device *parent;
 193         struct list_head siblings; /* devices on the same level */
 194         struct asd_sas_port *port;        /* shortcut to root of the tree */
 195         struct sas_phy *phy;
 196
 197         struct list_head dev_list_node;
 198         struct list_head disco_list_node; /* awaiting probe or destruct */
 199
 200         enum sas_protocol    iproto;
 201         enum sas_protocol    tproto;
 202
 203         struct sas_rphy *rphy;
 204
 205         u8  sas_addr[SAS_ADDR_SIZE];
 206         u8  hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
 207
 208         u8  frame_rcvd[32];
 209
 210         union {
 211                 struct expander_device ex_dev;
 212                 struct sata_device     sata_dev; /* STP & directly attached */
 213         };
 214
 215         void *lldd_dev;
 216         unsigned long state;
 217         struct kref kref;
 218 };
 219
 220 struct sas_discovery_event {
 221         struct work_struct work;
 222         struct asd_sas_port *port;
 223 };
 224
 225 struct sas_discovery {
 226         struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
 227         unsigned long    pending;
 228         u8     fanout_sas_addr[8];
 229         u8     eeds_a[8];
 230         u8     eeds_b[8];
 231         int    max_level;
 232 };
 233
 234 /* The port struct is Class:RW, driver:RO */
 235 struct asd_sas_port {
 236 /* private: */
 237         struct completion port_gone_completion;
 238
 239         struct sas_discovery disc;
 240         struct domain_device *port_dev;
 241         spinlock_t dev_list_lock;
 242         struct list_head dev_list;
 243         struct list_head disco_list;
 244         struct list_head destroy_list;
 245         enum   sas_linkrate linkrate;
 246
 247         struct work_struct work;
 248
 249 /* public: */
 250         int id;
 251
 252         enum sas_class   class;
 253         u8               sas_addr[SAS_ADDR_SIZE];
 254         u8               attached_sas_addr[SAS_ADDR_SIZE];
 255         enum sas_protocol   iproto;
 256         enum sas_protocol   tproto;
 257
 258         enum sas_oob_mode oob_mode;
 259
 260         spinlock_t       phy_list_lock;
 261         struct list_head phy_list;
 262         int              num_phys;
 263         u32              phy_mask;
 264
 265         struct sas_ha_struct *ha;
 266
 267         struct sas_port *port;
 268
 269         void *lldd_port;          /* not touched by the sas class code */
 270 };
 271
 272 struct asd_sas_event {
 273         struct work_struct work;
 274         struct asd_sas_phy *phy;
 275 };
 276
 277 /* The phy pretty much is controlled by the LLDD.
 278  * The class only reads those fields.
 279  */
 280 struct asd_sas_phy {
 281 /* private: */
 282         struct asd_sas_event   port_events[PORT_NUM_EVENTS];
 283         struct asd_sas_event   phy_events[PHY_NUM_EVENTS];
 284
 285         unsigned long port_events_pending;
 286         unsigned long phy_events_pending;
 287
 288         int error;
 289
 290         struct sas_phy *phy;
 291
 292 /* public: */
 293         /* The following are class:RO, driver:R/W */
 294         int            enabled;   /* must be set */
 295
 296         int            id;        /* must be set */
 297         enum sas_class class;
 298         enum sas_protocol iproto;
 299         enum sas_protocol tproto;
 300
 301         enum sas_phy_type  type;
 302         enum sas_phy_role  role;
 303         enum sas_oob_mode  oob_mode;
 304         enum sas_linkrate linkrate;
 305
 306         u8   *sas_addr;           /* must be set */
 307         u8   attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */
 308
 309         spinlock_t     frame_rcvd_lock;
 310         u8             *frame_rcvd; /* must be set */
 311         int            frame_rcvd_size;
 312
 313         spinlock_t     sas_prim_lock;
 314         u32            sas_prim;
 315
 316         struct list_head port_phy_el; /* driver:RO */
 317         struct asd_sas_port      *port; /* Class:RW, driver: RO */
 318
 319         struct sas_ha_struct *ha; /* may be set; the class sets it anyway */
 320
 321         void *lldd_phy;           /* not touched by the sas_class_code */
 322 };
 323
 324 struct scsi_core {
 325         struct Scsi_Host *shost;
 326
 327         struct mutex      task_queue_flush;
 328         spinlock_t        task_queue_lock;
 329         struct list_head  task_queue;
 330         int               task_queue_size;
 331
 332         struct task_struct *queue_thread;
 333 };
 334
 335 struct sas_ha_event {
 336         struct work_struct work;
 337         struct sas_ha_struct *ha;
 338 };
 339
 340 enum sas_ha_state {
 341         SAS_HA_REGISTERED,
 342         SAS_HA_DRAINING,
 343         SAS_HA_ATA_EH_ACTIVE,
 344         SAS_HA_FROZEN,
 345 };
 346
 347 struct sas_ha_struct {
 348 /* private: */
 349         struct sas_ha_event ha_events[HA_NUM_EVENTS];
 350         unsigned long    pending;
 351
 352         struct list_head  defer_q; /* work queued while draining */
 353         struct mutex      drain_mutex;
 354         unsigned long     state;
 355         spinlock_t        state_lock;
 356
 357         struct mutex disco_mutex;
 358
 359         struct scsi_core core;
 360
 361 /* public: */
 362         char *sas_ha_name;
 363         struct device *dev;       /* should be set */
 364         struct module *lldd_module; /* should be set */
 365
 366         u8 *sas_addr;             /* must be set */
 367         u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
 368
 369         spinlock_t      phy_port_lock;
 370         struct asd_sas_phy  **sas_phy; /* array of valid pointers, must be set */
 371         struct asd_sas_port **sas_port; /* array of valid pointers, must be set */
 372         int             num_phys; /* must be set, gt 0, static */
 373
 374         /* The class calls this to send a task for execution. */
 375         int lldd_max_execute_num;
 376         int lldd_queue_size;
 377         int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
 378                                 * their siblings when forming wide ports */
 379
 380         /* LLDD calls these to notify the class of an event. */
 381         void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event);
 382         void (*notify_port_event)(struct asd_sas_phy *, enum port_event);
 383         void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event);
 384
 385         void *lldd_ha;            /* not touched by sas class code */
 386
 387         struct list_head eh_done_q;  /* complete via scsi_eh_flush_done_q */
 388         struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */
 389 };
 390
 391 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata)
 392
 393 static inline struct domain_device *
 394 starget_to_domain_dev(struct scsi_target *starget) {
 395         return starget->hostdata;
 396 }
 397
 398 static inline struct domain_device *
 399 sdev_to_domain_dev(struct scsi_device *sdev) {
 400         return starget_to_domain_dev(sdev->sdev_target);
 401 }
 402
 403 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev)
 404 {
 405         return &dev->sata_dev.ap->link.device[0];
 406 }
 407
 408 static inline struct domain_device *
 409 cmd_to_domain_dev(struct scsi_cmnd *cmd)
 410 {
 411         return sdev_to_domain_dev(cmd->device);
 412 }
 413
 414 void sas_hash_addr(u8 *hashed, const u8 *sas_addr);
 415
 416 /* Before calling a notify event, LLDD should use this function
 417  * when the link is severed (possibly from its tasklet).
 418  * The idea is that the Class only reads those, while the LLDD,
 419  * can R/W these (thus avoiding a race).
 420  */
 421 static inline void sas_phy_disconnected(struct asd_sas_phy *phy)
 422 {
 423         phy->oob_mode = OOB_NOT_CONNECTED;
 424         phy->linkrate = SAS_LINK_RATE_UNKNOWN;
 425 }
 426
 427 static inline unsigned int to_sas_gpio_od(int device, int bit)
 428 {
 429         return 3 * device + bit;
 430 }
 431
 432 static inline void sas_put_local_phy(struct sas_phy *phy)
 433 {
 434         put_device(&phy->dev);
 435 }
 436
 437 #ifdef CONFIG_SCSI_SAS_HOST_SMP
 438 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count);
 439 #else
 440 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count)
 441 {
 442         return -1;
 443 }
 444 #endif
 445
 446 /* ---------- Tasks ---------- */
 447 /*
 448       service_response |  SAS_TASK_COMPLETE  |  SAS_TASK_UNDELIVERED |
 449   exec_status          |                     |                       |
 450   ---------------------+---------------------+-----------------------+
 451        SAM_...         |         X           |                       |
 452        DEV_NO_RESPONSE |         X           |           X           |
 453        INTERRUPTED     |         X           |                       |
 454        QUEUE_FULL      |                     |           X           |
 455        DEVICE_UNKNOWN  |                     |           X           |
 456        SG_ERR          |                     |           X           |
 457   ---------------------+---------------------+-----------------------+
 458  */
 459
 460 enum service_response {
 461         SAS_TASK_COMPLETE,
 462         SAS_TASK_UNDELIVERED = -1,
 463 };
 464
 465 enum exec_status {
 466         /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of
 467          * them here to silence 'case value not in enumerated type' warnings
 468          */
 469         __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION,
 470
 471         SAS_DEV_NO_RESPONSE = 0x80,
 472         SAS_DATA_UNDERRUN,
 473         SAS_DATA_OVERRUN,
 474         SAS_INTERRUPTED,
 475         SAS_QUEUE_FULL,
 476         SAS_DEVICE_UNKNOWN,
 477         SAS_SG_ERR,
 478         SAS_OPEN_REJECT,
 479         SAS_OPEN_TO,
 480         SAS_PROTO_RESPONSE,
 481         SAS_PHY_DOWN,
 482         SAS_NAK_R_ERR,
 483         SAS_PENDING,
 484         SAS_ABORTED_TASK,
 485 };
 486
 487 /* When a task finishes with a response, the LLDD examines the
 488  * response:
 489  *      - For an ATA task task_status_struct::stat is set to
 490  * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the
 491  * contents of struct ata_task_resp.
 492  *      - For SSP tasks, if no data is present or status/TMF response
 493  * is valid, task_status_struct::stat is set.  If data is present
 494  * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets
 495  * task_status_struct::buf_valid_size, and task_status_struct::stat is
 496  * set to SAM_CHECK_COND.
 497  *
 498  * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp
 499  * for ATA task.
 500  *
 501  * "frame_len" is the total frame length, which could be more or less
 502  * than actually copied.
 503  *
 504  * Tasks ending with response, always set the residual field.
 505  */
 506 struct ata_task_resp {
 507         u16  frame_len;
 508         u8   ending_fis[24];      /* dev to host or data-in */
 509 };
 510
 511 #define SAS_STATUS_BUF_SIZE 96
 512
 513 struct task_status_struct {
 514         enum service_response resp;
 515         enum exec_status      stat;
 516         int  buf_valid_size;
 517
 518         u8   buf[SAS_STATUS_BUF_SIZE];
 519
 520         u32  residual;
 521         enum sas_open_rej_reason open_rej_reason;
 522 };
 523
 524 /* ATA and ATAPI task queuable to a SAS LLDD.
 525  */
 526 struct sas_ata_task {
 527         struct host_to_dev_fis fis;
 528         u8     atapi_packet[16];  /* 0 if not ATAPI task */
 529
 530         u8     retry_count;       /* hardware retry, should be > 0 */
 531
 532         u8     dma_xfer:1;        /* PIO:0 or DMA:1 */
 533         u8     use_ncq:1;
 534         u8     set_affil_pol:1;
 535         u8     stp_affil_pol:1;
 536
 537         u8     device_control_reg_update:1;
 538 };
 539
 540 struct sas_smp_task {
 541         struct scatterlist smp_req;
 542         struct scatterlist smp_resp;
 543 };
 544
 545 enum task_attribute {
 546         TASK_ATTR_SIMPLE = 0,
 547         TASK_ATTR_HOQ    = 1,
 548         TASK_ATTR_ORDERED= 2,
 549         TASK_ATTR_ACA    = 4,
 550 };
 551
 552 struct sas_ssp_task {
 553         u8     retry_count;       /* hardware retry, should be > 0 */
 554
 555         u8     LUN[8];
 556         u8     enable_first_burst:1;
 557         enum   task_attribute task_attr;
 558         u8     task_prio;
 559         u8     cdb[16];
 560 };
 561
 562 struct sas_task {
 563         struct domain_device *dev;
 564         struct list_head      list;
 565
 566         spinlock_t   task_state_lock;
 567         unsigned     task_state_flags;
 568
 569         enum   sas_protocol      task_proto;
 570
 571         /* Used by the discovery code. */
 572         struct timer_list     timer;
 573         struct completion     completion;
 574
 575         union {
 576                 struct sas_ata_task ata_task;
 577                 struct sas_smp_task smp_task;
 578                 struct sas_ssp_task ssp_task;
 579         };
 580
 581         struct scatterlist *scatter;
 582         int    num_scatter;
 583         u32    total_xfer_len;
 584         u8     data_dir:2;        /* Use PCI_DMA_... */
 585
 586         struct task_status_struct task_status;
 587         void   (*task_done)(struct sas_task *);
 588
 589         void   *lldd_task;        /* for use by LLDDs */
 590         void   *uldd_task;
 591
 592         struct work_struct abort_work;
 593 };
 594
 595 #define SAS_TASK_STATE_PENDING      1
 596 #define SAS_TASK_STATE_DONE         2
 597 #define SAS_TASK_STATE_ABORTED      4
 598 #define SAS_TASK_NEED_DEV_RESET     8
 599 #define SAS_TASK_AT_INITIATOR       16
 600
 601 extern struct sas_task *sas_alloc_task(gfp_t flags);
 602 extern void sas_free_task(struct sas_task *task);
 603
 604 struct sas_domain_function_template {
 605         /* The class calls these to notify the LLDD of an event. */
 606         void (*lldd_port_formed)(struct asd_sas_phy *);
 607         void (*lldd_port_deformed)(struct asd_sas_phy *);
 608
 609         /* The class calls these when a device is found or gone. */
 610         int  (*lldd_dev_found)(struct domain_device *);
 611         void (*lldd_dev_gone)(struct domain_device *);
 612
 613         int (*lldd_execute_task)(struct sas_task *, int num,
 614                                  gfp_t gfp_flags);
 615
 616         /* Task Management Functions. Must be called from process context. */
 617         int (*lldd_abort_task)(struct sas_task *);
 618         int (*lldd_abort_task_set)(struct domain_device *, u8 *lun);
 619         int (*lldd_clear_aca)(struct domain_device *, u8 *lun);
 620         int (*lldd_clear_task_set)(struct domain_device *, u8 *lun);
 621         int (*lldd_I_T_nexus_reset)(struct domain_device *);
 622         int (*lldd_ata_check_ready)(struct domain_device *);
 623         void (*lldd_ata_set_dmamode)(struct domain_device *);
 624         int (*lldd_lu_reset)(struct domain_device *, u8 *lun);
 625         int (*lldd_query_task)(struct sas_task *);
 626
 627         /* Port and Adapter management */
 628         int (*lldd_clear_nexus_port)(struct asd_sas_port *);
 629         int (*lldd_clear_nexus_ha)(struct sas_ha_struct *);
 630
 631         /* Phy management */
 632         int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *);
 633
 634         /* GPIO support */
 635         int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type,
 636                                u8 reg_index, u8 reg_count, u8 *write_data);
 637 };
 638
 639 extern int sas_register_ha(struct sas_ha_struct *);
 640 extern int sas_unregister_ha(struct sas_ha_struct *);
 641
 642 int sas_set_phy_speed(struct sas_phy *phy,
 643                       struct sas_phy_linkrates *rates);
 644 int sas_phy_reset(struct sas_phy *phy, int hard_reset);
 645 int sas_queue_up(struct sas_task *task);
 646 extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *);
 647 extern int sas_target_alloc(struct scsi_target *);
 648 extern int sas_slave_configure(struct scsi_device *);
 649 extern int sas_change_queue_depth(struct scsi_device *, int new_depth,
 650                                   int reason);
 651 extern int sas_change_queue_type(struct scsi_device *, int qt);
 652 extern int sas_bios_param(struct scsi_device *,
 653                           struct block_device *,
 654                           sector_t capacity, int *hsc);
 655 extern struct scsi_transport_template *
 656 sas_domain_attach_transport(struct sas_domain_function_template *);
 657 extern void sas_domain_release_transport(struct scsi_transport_template *);
 658
 659 int  sas_discover_root_expander(struct domain_device *);
 660
 661 void sas_init_ex_attr(void);
 662
 663 int  sas_ex_revalidate_domain(struct domain_device *);
 664
 665 void sas_unregister_domain_devices(struct asd_sas_port *port, int gone);
 666 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *);
 667 int  sas_discover_event(struct asd_sas_port *, enum discover_event ev);
 668
 669 int  sas_discover_sata(struct domain_device *);
 670 int  sas_discover_end_dev(struct domain_device *);
 671
 672 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *);
 673
 674 void sas_init_dev(struct domain_device *);
 675
 676 void sas_task_abort(struct sas_task *);
 677 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
 678 int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd);
 679
 680 extern void sas_target_destroy(struct scsi_target *);
 681 extern int sas_slave_alloc(struct scsi_device *);
 682 extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg);
 683 extern int sas_drain_work(struct sas_ha_struct *ha);
 684
 685 extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
 686                            struct request *req);
 687
 688 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
 689                                   struct ssp_response_iu *iu);
 690 struct sas_phy *sas_get_local_phy(struct domain_device *dev);
 691
 692 int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
 693
 694 #endif /* _SASLIB_H_ */