include/scsi/libsas.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * SAS host prototypes and structures header file
   4  *
   5  * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
   6  * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
   7  */
   8
   9 #ifndef _LIBSAS_H_
  10 #define _LIBSAS_H_
  11
  12
  13 #include <linux/timer.h>
  14 #include <linux/pci.h>
  15 #include <scsi/sas.h>
  16 #include <linux/libata.h>
  17 #include <linux/list.h>
  18 #include <scsi/scsi_device.h>
  19 #include <scsi/scsi_cmnd.h>
  20 #include <scsi/scsi_transport_sas.h>
  21 #include <linux/scatterlist.h>
  22 #include <linux/slab.h>
  23
  24 struct block_device;
  25
  26 enum sas_phy_role {
  27         PHY_ROLE_NONE = 0,
  28         PHY_ROLE_TARGET = 0x40,
  29         PHY_ROLE_INITIATOR = 0x80,
  30 };
  31
  32 /* The events are mnemonically described in sas_dump.c
  33  * so when updating/adding events here, please also
  34  * update the other file too.
  35  */
  36 enum port_event {
  37         PORTE_BYTES_DMAED     = 0U,
  38         PORTE_BROADCAST_RCVD,
  39         PORTE_LINK_RESET_ERR,
  40         PORTE_TIMER_EVENT,
  41         PORTE_HARD_RESET,
  42         PORT_NUM_EVENTS,
  43 };
  44
  45 enum phy_event {
  46         PHYE_LOSS_OF_SIGNAL   = 0U,
  47         PHYE_OOB_DONE,
  48         PHYE_OOB_ERROR,
  49         PHYE_SPINUP_HOLD,             /* hot plug SATA, no COMWAKE sent */
  50         PHYE_RESUME_TIMEOUT,
  51         PHYE_SHUTDOWN,
  52         PHY_NUM_EVENTS,
  53 };
  54
  55 enum discover_event {
  56         DISCE_DISCOVER_DOMAIN   = 0U,
  57         DISCE_REVALIDATE_DOMAIN,
  58         DISCE_SUSPEND,
  59         DISCE_RESUME,
  60         DISC_NUM_EVENTS,
  61 };
  62
  63 /* ---------- Expander Devices ---------- */
  64
  65 #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj)
  66 #define to_dev_attr(_attr)  container_of(_attr, struct domain_dev_attribute,\
  67                                          attr)
  68
  69 enum routing_attribute {
  70         DIRECT_ROUTING,
  71         SUBTRACTIVE_ROUTING,
  72         TABLE_ROUTING,
  73 };
  74
  75 enum ex_phy_state {
  76         PHY_EMPTY,
  77         PHY_VACANT,
  78         PHY_NOT_PRESENT,
  79         PHY_DEVICE_DISCOVERED
  80 };
  81
  82 struct ex_phy {
  83         int    phy_id;
  84
  85         enum ex_phy_state phy_state;
  86
  87         enum sas_device_type attached_dev_type;
  88         enum sas_linkrate linkrate;
  89
  90         u8   attached_sata_host:1;
  91         u8   attached_sata_dev:1;
  92         u8   attached_sata_ps:1;
  93
  94         enum sas_protocol attached_tproto;
  95         enum sas_protocol attached_iproto;
  96
  97         u8   attached_sas_addr[SAS_ADDR_SIZE];
  98         u8   attached_phy_id;
  99
 100         int phy_change_count;
 101         enum routing_attribute routing_attr;
 102         u8   virtual:1;
 103
 104         int  last_da_index;
 105
 106         struct sas_phy *phy;
 107         struct sas_port *port;
 108 };
 109
 110 struct expander_device {
 111         struct list_head children;
 112
 113         int    ex_change_count;
 114         u16    max_route_indexes;
 115         u8     num_phys;
 116
 117         u8     t2t_supp:1;
 118         u8     configuring:1;
 119         u8     conf_route_table:1;
 120
 121         u8     enclosure_logical_id[8];
 122
 123         struct ex_phy *ex_phy;
 124         struct sas_port *parent_port;
 125
 126         struct mutex cmd_mutex;
 127 };
 128
 129 /* ---------- SATA device ---------- */
 130 #define ATA_RESP_FIS_SIZE 24
 131
 132 struct sata_device {
 133         unsigned int class;
 134         u8     port_no;        /* port number, if this is a PM (Port) */
 135
 136         struct ata_port *ap;
 137         struct ata_host *ata_host;
 138         struct smp_rps_resp rps_resp ____cacheline_aligned; /* report_phy_sata_resp */
 139         u8     fis[ATA_RESP_FIS_SIZE];
 140 };
 141
 142 struct ssp_device {
 143         struct list_head eh_list_node; /* pending a user requested eh action */
 144         struct scsi_lun reset_lun;
 145 };
 146
 147 enum {
 148         SAS_DEV_GONE,
 149         SAS_DEV_FOUND, /* device notified to lldd */
 150         SAS_DEV_DESTROY,
 151         SAS_DEV_EH_PENDING,
 152         SAS_DEV_LU_RESET,
 153         SAS_DEV_RESET,
 154 };
 155
 156 struct domain_device {
 157         spinlock_t done_lock;
 158         enum sas_device_type dev_type;
 159
 160         enum sas_linkrate linkrate;
 161         enum sas_linkrate min_linkrate;
 162         enum sas_linkrate max_linkrate;
 163
 164         int  pathways;
 165
 166         struct domain_device *parent;
 167         struct list_head siblings; /* devices on the same level */
 168         struct asd_sas_port *port;        /* shortcut to root of the tree */
 169         struct sas_phy *phy;
 170
 171         struct list_head dev_list_node;
 172         struct list_head disco_list_node; /* awaiting probe or destruct */
 173
 174         enum sas_protocol    iproto;
 175         enum sas_protocol    tproto;
 176
 177         struct sas_rphy *rphy;
 178
 179         u8  sas_addr[SAS_ADDR_SIZE];
 180         u8  hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
 181
 182         u8  frame_rcvd[32];
 183
 184         union {
 185                 struct expander_device ex_dev;
 186                 struct sata_device     sata_dev; /* STP & directly attached */
 187                 struct ssp_device      ssp_dev;
 188         };
 189
 190         void *lldd_dev;
 191         unsigned long state;
 192         struct kref kref;
 193 };
 194
 195 struct sas_work {
 196         struct list_head drain_node;
 197         struct work_struct work;
 198 };
 199
 200 static inline bool dev_is_expander(enum sas_device_type type)
 201 {
 202         return type == SAS_EDGE_EXPANDER_DEVICE ||
 203                type == SAS_FANOUT_EXPANDER_DEVICE;
 204 }
 205
 206 static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *))
 207 {
 208         INIT_WORK(&sw->work, fn);
 209         INIT_LIST_HEAD(&sw->drain_node);
 210 }
 211
 212 struct sas_discovery_event {
 213         struct sas_work work;
 214         struct asd_sas_port *port;
 215 };
 216
 217 static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work)
 218 {
 219         struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work);
 220
 221         return ev;
 222 }
 223
 224 struct sas_discovery {
 225         struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
 226         unsigned long    pending;
 227         u8     fanout_sas_addr[SAS_ADDR_SIZE];
 228         u8     eeds_a[SAS_ADDR_SIZE];
 229         u8     eeds_b[SAS_ADDR_SIZE];
 230         int    max_level;
 231 };
 232
 233 /* The port struct is Class:RW, driver:RO */
 234 struct asd_sas_port {
 235 /* private: */
 236         struct sas_discovery disc;
 237         struct domain_device *port_dev;
 238         spinlock_t dev_list_lock;
 239         struct list_head dev_list;
 240         struct list_head disco_list;
 241         struct list_head destroy_list;
 242         struct list_head sas_port_del_list;
 243         enum   sas_linkrate linkrate;
 244
 245         struct sas_work work;
 246         int suspended;
 247
 248 /* public: */
 249         int id;
 250
 251         u8               sas_addr[SAS_ADDR_SIZE];
 252         u8               attached_sas_addr[SAS_ADDR_SIZE];
 253         enum sas_protocol   iproto;
 254         enum sas_protocol   tproto;
 255
 256         enum sas_oob_mode oob_mode;
 257
 258         spinlock_t       phy_list_lock;
 259         struct list_head phy_list;
 260         int              num_phys;
 261         u32              phy_mask;
 262
 263         struct sas_ha_struct *ha;
 264
 265         struct sas_port *port;
 266
 267         void *lldd_port;          /* not touched by the sas class code */
 268 };
 269
 270 struct asd_sas_event {
 271         struct sas_work work;
 272         struct asd_sas_phy *phy;
 273         int event;
 274 };
 275
 276 static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work)
 277 {
 278         struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work);
 279
 280         return ev;
 281 }
 282
 283 static inline void INIT_SAS_EVENT(struct asd_sas_event *ev,
 284                 void (*fn)(struct work_struct *),
 285                 struct asd_sas_phy *phy, int event)
 286 {
 287         INIT_SAS_WORK(&ev->work, fn);
 288         ev->phy = phy;
 289         ev->event = event;
 290 }
 291
 292 #define SAS_PHY_SHUTDOWN_THRES   1024
 293
 294 /* The phy pretty much is controlled by the LLDD.
 295  * The class only reads those fields.
 296  */
 297 struct asd_sas_phy {
 298 /* private: */
 299         atomic_t event_nr;
 300         int in_shutdown;
 301         int error;
 302         int suspended;
 303
 304         struct sas_phy *phy;
 305
 306 /* public: */
 307         /* The following are class:RO, driver:R/W */
 308         int            enabled;   /* must be set */
 309
 310         int            id;        /* must be set */
 311         enum sas_protocol iproto;
 312         enum sas_protocol tproto;
 313
 314         enum sas_phy_role  role;
 315         enum sas_oob_mode  oob_mode;
 316         enum sas_linkrate linkrate;
 317
 318         u8   *sas_addr;           /* must be set */
 319         u8   attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */
 320
 321         spinlock_t     frame_rcvd_lock;
 322         u8             *frame_rcvd; /* must be set */
 323         int            frame_rcvd_size;
 324
 325         spinlock_t     sas_prim_lock;
 326         u32            sas_prim;
 327
 328         struct list_head port_phy_el; /* driver:RO */
 329         struct asd_sas_port      *port; /* Class:RW, driver: RO */
 330
 331         struct sas_ha_struct *ha; /* may be set; the class sets it anyway */
 332
 333         void *lldd_phy;           /* not touched by the sas_class_code */
 334 };
 335
 336 enum sas_ha_state {
 337         SAS_HA_REGISTERED,
 338         SAS_HA_DRAINING,
 339         SAS_HA_ATA_EH_ACTIVE,
 340         SAS_HA_FROZEN,
 341         SAS_HA_RESUMING,
 342 };
 343
 344 struct sas_ha_struct {
 345 /* private: */
 346         struct list_head  defer_q; /* work queued while draining */
 347         struct mutex      drain_mutex;
 348         unsigned long     state;
 349         spinlock_t        lock;
 350         int               eh_active;
 351         wait_queue_head_t eh_wait_q;
 352         struct list_head  eh_dev_q;
 353
 354         struct mutex disco_mutex;
 355
 356         struct Scsi_Host *shost;
 357
 358 /* public: */
 359         char *sas_ha_name;
 360         struct device *dev;       /* should be set */
 361
 362         struct workqueue_struct *event_q;
 363         struct workqueue_struct *disco_q;
 364
 365         u8 *sas_addr;             /* must be set */
 366         u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
 367
 368         spinlock_t      phy_port_lock;
 369         struct asd_sas_phy  **sas_phy; /* array of valid pointers, must be set */
 370         struct asd_sas_port **sas_port; /* array of valid pointers, must be set */
 371         int             num_phys; /* must be set, gt 0, static */
 372
 373         int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
 374                                 * their siblings when forming wide ports */
 375
 376         void *lldd_ha;            /* not touched by sas class code */
 377
 378         struct list_head eh_done_q;  /* complete via scsi_eh_flush_done_q */
 379         struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */
 380
 381         int event_thres;
 382 };
 383
 384 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata)
 385
 386 static inline struct domain_device *
 387 starget_to_domain_dev(struct scsi_target *starget) {
 388         return starget->hostdata;
 389 }
 390
 391 static inline struct domain_device *
 392 sdev_to_domain_dev(struct scsi_device *sdev) {
 393         return starget_to_domain_dev(sdev->sdev_target);
 394 }
 395
 396 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev)
 397 {
 398         return &dev->sata_dev.ap->link.device[0];
 399 }
 400
 401 static inline struct domain_device *
 402 cmd_to_domain_dev(struct scsi_cmnd *cmd)
 403 {
 404         return sdev_to_domain_dev(cmd->device);
 405 }
 406
 407 /* Before calling a notify event, LLDD should use this function
 408  * when the link is severed (possibly from its tasklet).
 409  * The idea is that the Class only reads those, while the LLDD,
 410  * can R/W these (thus avoiding a race).
 411  */
 412 static inline void sas_phy_disconnected(struct asd_sas_phy *phy)
 413 {
 414         phy->oob_mode = OOB_NOT_CONNECTED;
 415         phy->linkrate = SAS_LINK_RATE_UNKNOWN;
 416 }
 417
 418 static inline unsigned int to_sas_gpio_od(int device, int bit)
 419 {
 420         return 3 * device + bit;
 421 }
 422
 423 static inline void sas_put_local_phy(struct sas_phy *phy)
 424 {
 425         put_device(&phy->dev);
 426 }
 427
 428 #ifdef CONFIG_SCSI_SAS_HOST_SMP
 429 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count);
 430 #else
 431 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count)
 432 {
 433         return -1;
 434 }
 435 #endif
 436
 437 /* ---------- Tasks ---------- */
 438 /*
 439       service_response |  SAS_TASK_COMPLETE  |  SAS_TASK_UNDELIVERED |
 440   exec_status          |                     |                       |
 441   ---------------------+---------------------+-----------------------+
 442        SAM_...         |         X           |                       |
 443        DEV_NO_RESPONSE |         X           |           X           |
 444        INTERRUPTED     |         X           |                       |
 445        QUEUE_FULL      |                     |           X           |
 446        DEVICE_UNKNOWN  |                     |           X           |
 447        SG_ERR          |                     |           X           |
 448   ---------------------+---------------------+-----------------------+
 449  */
 450
 451 enum service_response {
 452         SAS_TASK_COMPLETE,
 453         SAS_TASK_UNDELIVERED = -1,
 454 };
 455
 456 enum exec_status {
 457         /*
 458          * Values 0..0x7f are used to return the SAM_STAT_* codes.  To avoid
 459          * 'case value not in enumerated type' compiler warnings every value
 460          * returned through the exec_status enum needs an alias with the SAS_
 461          * prefix here.
 462          */
 463         SAS_SAM_STAT_GOOD = SAM_STAT_GOOD,
 464         SAS_SAM_STAT_BUSY = SAM_STAT_BUSY,
 465         SAS_SAM_STAT_TASK_ABORTED = SAM_STAT_TASK_ABORTED,
 466         SAS_SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION,
 467
 468         SAS_DEV_NO_RESPONSE = 0x80,
 469         SAS_DATA_UNDERRUN,
 470         SAS_DATA_OVERRUN,
 471         SAS_INTERRUPTED,
 472         SAS_QUEUE_FULL,
 473         SAS_DEVICE_UNKNOWN,
 474         SAS_OPEN_REJECT,
 475         SAS_OPEN_TO,
 476         SAS_PROTO_RESPONSE,
 477         SAS_PHY_DOWN,
 478         SAS_NAK_R_ERR,
 479         SAS_PENDING,
 480         SAS_ABORTED_TASK,
 481 };
 482
 483 /* When a task finishes with a response, the LLDD examines the
 484  * response:
 485  *      - For an ATA task task_status_struct::stat is set to
 486  * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the
 487  * contents of struct ata_task_resp.
 488  *      - For SSP tasks, if no data is present or status/TMF response
 489  * is valid, task_status_struct::stat is set.  If data is present
 490  * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets
 491  * task_status_struct::buf_valid_size, and task_status_struct::stat is
 492  * set to SAM_CHECK_COND.
 493  *
 494  * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp
 495  * for ATA task.
 496  *
 497  * "frame_len" is the total frame length, which could be more or less
 498  * than actually copied.
 499  *
 500  * Tasks ending with response, always set the residual field.
 501  */
 502 struct ata_task_resp {
 503         u16  frame_len;
 504         u8   ending_fis[ATA_RESP_FIS_SIZE];       /* dev to host or data-in */
 505 };
 506
 507 #define SAS_STATUS_BUF_SIZE 96
 508
 509 struct task_status_struct {
 510         enum service_response resp;
 511         enum exec_status      stat;
 512         int  buf_valid_size;
 513
 514         u8   buf[SAS_STATUS_BUF_SIZE];
 515
 516         u32  residual;
 517         enum sas_open_rej_reason open_rej_reason;
 518 };
 519
 520 /* ATA and ATAPI task queuable to a SAS LLDD.
 521  */
 522 struct sas_ata_task {
 523         struct host_to_dev_fis fis;
 524         u8     atapi_packet[16];  /* 0 if not ATAPI task */
 525
 526         u8     dma_xfer:1;        /* PIO:0 or DMA:1 */
 527         u8     use_ncq:1;
 528         u8     return_fis_on_success:1;
 529
 530         u8     device_control_reg_update:1;
 531
 532         bool   force_phy;
 533         int    force_phy_id;
 534 };
 535
 536 /* LLDDs rely on these values */
 537 enum sas_internal_abort {
 538         SAS_INTERNAL_ABORT_SINGLE       = 0,
 539         SAS_INTERNAL_ABORT_DEV          = 1,
 540 };
 541
 542 struct sas_internal_abort_task {
 543         enum sas_internal_abort type;
 544         unsigned int qid;
 545         u16 tag;
 546 };
 547
 548 struct sas_smp_task {
 549         struct scatterlist smp_req;
 550         struct scatterlist smp_resp;
 551 };
 552
 553 enum task_attribute {
 554         TASK_ATTR_SIMPLE = 0,
 555         TASK_ATTR_HOQ    = 1,
 556         TASK_ATTR_ORDERED= 2,
 557         TASK_ATTR_ACA    = 4,
 558 };
 559
 560 struct sas_ssp_task {
 561         u8     LUN[8];
 562         enum   task_attribute task_attr;
 563         struct scsi_cmnd *cmd;
 564 };
 565
 566 struct sas_tmf_task {
 567         u8 tmf;
 568         u16 tag_of_task_to_be_managed;
 569 };
 570
 571 struct sas_task {
 572         struct domain_device *dev;
 573
 574         spinlock_t   task_state_lock;
 575         unsigned     task_state_flags;
 576
 577         enum   sas_protocol      task_proto;
 578
 579         union {
 580                 struct sas_ata_task ata_task;
 581                 struct sas_smp_task smp_task;
 582                 struct sas_ssp_task ssp_task;
 583                 struct sas_internal_abort_task abort_task;
 584         };
 585
 586         struct scatterlist *scatter;
 587         int    num_scatter;
 588         u32    total_xfer_len;
 589         u8     data_dir:2;        /* Use PCI_DMA_... */
 590
 591         struct task_status_struct task_status;
 592         void   (*task_done)(struct sas_task *);
 593
 594         void   *lldd_task;        /* for use by LLDDs */
 595         void   *uldd_task;
 596         struct sas_task_slow *slow_task;
 597         struct sas_tmf_task *tmf;
 598 };
 599
 600 struct sas_task_slow {
 601         /* standard/extra infrastructure for slow path commands (SMP and
 602          * internal lldd commands
 603          */
 604         struct timer_list     timer;
 605         struct completion     completion;
 606         struct sas_task       *task;
 607 };
 608
 609 #define SAS_TASK_STATE_PENDING      1
 610 #define SAS_TASK_STATE_DONE         2
 611 #define SAS_TASK_STATE_ABORTED      4
 612 #define SAS_TASK_NEED_DEV_RESET     8
 613
 614 static inline bool sas_is_internal_abort(struct sas_task *task)
 615 {
 616         return task->task_proto == SAS_PROTOCOL_INTERNAL_ABORT;
 617 }
 618
 619 static inline struct request *sas_task_find_rq(struct sas_task *task)
 620 {
 621         struct scsi_cmnd *scmd;
 622
 623         if (task->task_proto & SAS_PROTOCOL_STP_ALL) {
 624                 struct ata_queued_cmd *qc = task->uldd_task;
 625
 626                 scmd = qc ? qc->scsicmd : NULL;
 627         } else {
 628                 scmd = task->uldd_task;
 629         }
 630
 631         if (!scmd)
 632                 return NULL;
 633
 634         return scsi_cmd_to_rq(scmd);
 635 }
 636
 637 struct sas_domain_function_template {
 638         /* The class calls these to notify the LLDD of an event. */
 639         void (*lldd_port_formed)(struct asd_sas_phy *);
 640         void (*lldd_port_deformed)(struct asd_sas_phy *);
 641
 642         /* The class calls these when a device is found or gone. */
 643         int  (*lldd_dev_found)(struct domain_device *);
 644         void (*lldd_dev_gone)(struct domain_device *);
 645
 646         int (*lldd_execute_task)(struct sas_task *, gfp_t gfp_flags);
 647
 648         /* Task Management Functions. Must be called from process context. */
 649         int (*lldd_abort_task)(struct sas_task *);
 650         int (*lldd_abort_task_set)(struct domain_device *, u8 *lun);
 651         int (*lldd_clear_task_set)(struct domain_device *, u8 *lun);
 652         int (*lldd_I_T_nexus_reset)(struct domain_device *);
 653         int (*lldd_ata_check_ready)(struct domain_device *);
 654         void (*lldd_ata_set_dmamode)(struct domain_device *);
 655         int (*lldd_lu_reset)(struct domain_device *, u8 *lun);
 656         int (*lldd_query_task)(struct sas_task *);
 657
 658         /* Special TMF callbacks */
 659         void (*lldd_tmf_exec_complete)(struct domain_device *dev);
 660         void (*lldd_tmf_aborted)(struct sas_task *task);
 661         bool (*lldd_abort_timeout)(struct sas_task *task, void *data);
 662
 663         /* Port and Adapter management */
 664         int (*lldd_clear_nexus_port)(struct asd_sas_port *);
 665         int (*lldd_clear_nexus_ha)(struct sas_ha_struct *);
 666
 667         /* Phy management */
 668         int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *);
 669
 670         /* GPIO support */
 671         int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type,
 672                                u8 reg_index, u8 reg_count, u8 *write_data);
 673 };
 674
 675 extern int sas_register_ha(struct sas_ha_struct *);
 676 extern int sas_unregister_ha(struct sas_ha_struct *);
 677 extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha);
 678 extern void sas_resume_ha(struct sas_ha_struct *sas_ha);
 679 extern void sas_resume_ha_no_sync(struct sas_ha_struct *sas_ha);
 680 extern void sas_suspend_ha(struct sas_ha_struct *sas_ha);
 681
 682 int sas_phy_reset(struct sas_phy *phy, int hard_reset);
 683 int sas_phy_enable(struct sas_phy *phy, int enable);
 684 extern int sas_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
 685 extern int sas_target_alloc(struct scsi_target *);
 686 int sas_device_configure(struct scsi_device *dev,
 687                 struct queue_limits *lim);
 688 extern int sas_change_queue_depth(struct scsi_device *, int new_depth);
 689 extern int sas_bios_param(struct scsi_device *, struct block_device *,
 690                           sector_t capacity, int *hsc);
 691 int sas_execute_internal_abort_single(struct domain_device *device,
 692                                       u16 tag, unsigned int qid,
 693                                       void *data);
 694 int sas_execute_internal_abort_dev(struct domain_device *device,
 695                                    unsigned int qid, void *data);
 696 extern struct scsi_transport_template *
 697 sas_domain_attach_transport(struct sas_domain_function_template *);
 698 extern struct device_attribute dev_attr_phy_event_threshold;
 699
 700 void sas_task_abort(struct sas_task *);
 701 int sas_eh_abort_handler(struct scsi_cmnd *cmd);
 702 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
 703 int sas_eh_target_reset_handler(struct scsi_cmnd *cmd);
 704
 705 extern void sas_target_destroy(struct scsi_target *);
 706 extern int sas_slave_alloc(struct scsi_device *);
 707 extern int sas_ioctl(struct scsi_device *sdev, unsigned int cmd,
 708                      void __user *arg);
 709 extern int sas_drain_work(struct sas_ha_struct *ha);
 710
 711 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
 712                                   struct ssp_response_iu *iu);
 713 struct sas_phy *sas_get_local_phy(struct domain_device *dev);
 714
 715 int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
 716
 717 int sas_abort_task_set(struct domain_device *dev, u8 *lun);
 718 int sas_clear_task_set(struct domain_device *dev, u8 *lun);
 719 int sas_lu_reset(struct domain_device *dev, u8 *lun);
 720 int sas_query_task(struct sas_task *task, u16 tag);
 721 int sas_abort_task(struct sas_task *task, u16 tag);
 722 int sas_find_attached_phy_id(struct expander_device *ex_dev,
 723                              struct domain_device *dev);
 724
 725 void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
 726                            gfp_t gfp_flags);
 727 void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
 728                            gfp_t gfp_flags);
 729
 730 #define __LIBSAS_SHT_BASE                                               \
 731         .module                         = THIS_MODULE,                  \
 732         .name                           = DRV_NAME,                     \
 733         .proc_name                      = DRV_NAME,                     \
 734         .queuecommand                   = sas_queuecommand,             \
 735         .dma_need_drain                 = ata_scsi_dma_need_drain,      \
 736         .target_alloc                   = sas_target_alloc,             \
 737         .change_queue_depth             = sas_change_queue_depth,       \
 738         .bios_param                     = sas_bios_param,               \
 739         .this_id                        = -1,                           \
 740         .eh_device_reset_handler        = sas_eh_device_reset_handler,  \
 741         .eh_target_reset_handler        = sas_eh_target_reset_handler,  \
 742         .target_destroy                 = sas_target_destroy,           \
 743         .ioctl                          = sas_ioctl,                    \
 744
 745 #ifdef CONFIG_COMPAT
 746 #define _LIBSAS_SHT_BASE                __LIBSAS_SHT_BASE               \
 747         .compat_ioctl                   = sas_ioctl,
 748 #else
 749 #define _LIBSAS_SHT_BASE                __LIBSAS_SHT_BASE
 750 #endif
 751
 752 #define LIBSAS_SHT_BASE                 _LIBSAS_SHT_BASE                \
 753         .device_configure               = sas_device_configure,         \
 754         .slave_alloc                    = sas_slave_alloc,              \
 755
 756 #define LIBSAS_SHT_BASE_NO_SLAVE_INIT   _LIBSAS_SHT_BASE
 757
 758
 759 #endif /* _SASLIB_H_ */