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