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_work { 221 struct list_head drain_node; 222 struct work_struct work; 223 }; 224 225 static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *)) 226 { 227 INIT_WORK(&sw->work, fn); 228 INIT_LIST_HEAD(&sw->drain_node); 229 } 230 231 struct sas_discovery_event { 232 struct sas_work work; 233 struct asd_sas_port *port; 234 }; 235 236 static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work) 237 { 238 struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work); 239 240 return ev; 241 } 242 243 struct sas_discovery { 244 struct sas_discovery_event disc_work[DISC_NUM_EVENTS]; 245 unsigned long pending; 246 u8 fanout_sas_addr[8]; 247 u8 eeds_a[8]; 248 u8 eeds_b[8]; 249 int max_level; 250 }; 251 252 /* The port struct is Class:RW, driver:RO */ 253 struct asd_sas_port { 254 /* private: */ 255 struct completion port_gone_completion; 256 257 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 enum sas_linkrate linkrate; 264 265 struct sas_work work; 266 267 /* public: */ 268 int id; 269 270 enum sas_class class; 271 u8 sas_addr[SAS_ADDR_SIZE]; 272 u8 attached_sas_addr[SAS_ADDR_SIZE]; 273 enum sas_protocol iproto; 274 enum sas_protocol tproto; 275 276 enum sas_oob_mode oob_mode; 277 278 spinlock_t phy_list_lock; 279 struct list_head phy_list; 280 int num_phys; 281 u32 phy_mask; 282 283 struct sas_ha_struct *ha; 284 285 struct sas_port *port; 286 287 void *lldd_port; /* not touched by the sas class code */ 288 }; 289 290 struct asd_sas_event { 291 struct sas_work work; 292 struct asd_sas_phy *phy; 293 }; 294 295 static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work) 296 { 297 struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work); 298 299 return ev; 300 } 301 302 /* The phy pretty much is controlled by the LLDD. 303 * The class only reads those fields. 304 */ 305 struct asd_sas_phy { 306 /* private: */ 307 struct asd_sas_event port_events[PORT_NUM_EVENTS]; 308 struct asd_sas_event phy_events[PHY_NUM_EVENTS]; 309 310 unsigned long port_events_pending; 311 unsigned long phy_events_pending; 312 313 int error; 314 315 struct sas_phy *phy; 316 317 /* public: */ 318 /* The following are class:RO, driver:R/W */ 319 int enabled; /* must be set */ 320 321 int id; /* must be set */ 322 enum sas_class class; 323 enum sas_protocol iproto; 324 enum sas_protocol tproto; 325 326 enum sas_phy_type type; 327 enum sas_phy_role role; 328 enum sas_oob_mode oob_mode; 329 enum sas_linkrate linkrate; 330 331 u8 *sas_addr; /* must be set */ 332 u8 attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */ 333 334 spinlock_t frame_rcvd_lock; 335 u8 *frame_rcvd; /* must be set */ 336 int frame_rcvd_size; 337 338 spinlock_t sas_prim_lock; 339 u32 sas_prim; 340 341 struct list_head port_phy_el; /* driver:RO */ 342 struct asd_sas_port *port; /* Class:RW, driver: RO */ 343 344 struct sas_ha_struct *ha; /* may be set; the class sets it anyway */ 345 346 void *lldd_phy; /* not touched by the sas_class_code */ 347 }; 348 349 struct scsi_core { 350 struct Scsi_Host *shost; 351 352 struct mutex task_queue_flush; 353 spinlock_t task_queue_lock; 354 struct list_head task_queue; 355 int task_queue_size; 356 357 struct task_struct *queue_thread; 358 }; 359 360 struct sas_ha_event { 361 struct sas_work work; 362 struct sas_ha_struct *ha; 363 }; 364 365 static inline struct sas_ha_event *to_sas_ha_event(struct work_struct *work) 366 { 367 struct sas_ha_event *ev = container_of(work, typeof(*ev), work.work); 368 369 return ev; 370 } 371 372 enum sas_ha_state { 373 SAS_HA_REGISTERED, 374 SAS_HA_DRAINING, 375 SAS_HA_ATA_EH_ACTIVE, 376 SAS_HA_FROZEN, 377 }; 378 379 struct sas_ha_struct { 380 /* private: */ 381 struct sas_ha_event ha_events[HA_NUM_EVENTS]; 382 unsigned long pending; 383 384 struct list_head defer_q; /* work queued while draining */ 385 struct mutex drain_mutex; 386 unsigned long state; 387 spinlock_t state_lock; 388 389 struct mutex disco_mutex; 390 391 struct scsi_core core; 392 393 /* public: */ 394 char *sas_ha_name; 395 struct device *dev; /* should be set */ 396 struct module *lldd_module; /* should be set */ 397 398 u8 *sas_addr; /* must be set */ 399 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; 400 401 spinlock_t phy_port_lock; 402 struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */ 403 struct asd_sas_port **sas_port; /* array of valid pointers, must be set */ 404 int num_phys; /* must be set, gt 0, static */ 405 406 /* The class calls this to send a task for execution. */ 407 int lldd_max_execute_num; 408 int lldd_queue_size; 409 int strict_wide_ports; /* both sas_addr and attached_sas_addr must match 410 * their siblings when forming wide ports */ 411 412 /* LLDD calls these to notify the class of an event. */ 413 void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event); 414 void (*notify_port_event)(struct asd_sas_phy *, enum port_event); 415 void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event); 416 417 void *lldd_ha; /* not touched by sas class code */ 418 419 struct list_head eh_done_q; /* complete via scsi_eh_flush_done_q */ 420 struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */ 421 }; 422 423 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata) 424 425 static inline struct domain_device * 426 starget_to_domain_dev(struct scsi_target *starget) { 427 return starget->hostdata; 428 } 429 430 static inline struct domain_device * 431 sdev_to_domain_dev(struct scsi_device *sdev) { 432 return starget_to_domain_dev(sdev->sdev_target); 433 } 434 435 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev) 436 { 437 return &dev->sata_dev.ap->link.device[0]; 438 } 439 440 static inline struct domain_device * 441 cmd_to_domain_dev(struct scsi_cmnd *cmd) 442 { 443 return sdev_to_domain_dev(cmd->device); 444 } 445 446 void sas_hash_addr(u8 *hashed, const u8 *sas_addr); 447 448 /* Before calling a notify event, LLDD should use this function 449 * when the link is severed (possibly from its tasklet). 450 * The idea is that the Class only reads those, while the LLDD, 451 * can R/W these (thus avoiding a race). 452 */ 453 static inline void sas_phy_disconnected(struct asd_sas_phy *phy) 454 { 455 phy->oob_mode = OOB_NOT_CONNECTED; 456 phy->linkrate = SAS_LINK_RATE_UNKNOWN; 457 } 458 459 static inline unsigned int to_sas_gpio_od(int device, int bit) 460 { 461 return 3 * device + bit; 462 } 463 464 static inline void sas_put_local_phy(struct sas_phy *phy) 465 { 466 put_device(&phy->dev); 467 } 468 469 #ifdef CONFIG_SCSI_SAS_HOST_SMP 470 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count); 471 #else 472 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count) 473 { 474 return -1; 475 } 476 #endif 477 478 /* ---------- Tasks ---------- */ 479 /* 480 service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED | 481 exec_status | | | 482 ---------------------+---------------------+-----------------------+ 483 SAM_... | X | | 484 DEV_NO_RESPONSE | X | X | 485 INTERRUPTED | X | | 486 QUEUE_FULL | | X | 487 DEVICE_UNKNOWN | | X | 488 SG_ERR | | X | 489 ---------------------+---------------------+-----------------------+ 490 */ 491 492 enum service_response { 493 SAS_TASK_COMPLETE, 494 SAS_TASK_UNDELIVERED = -1, 495 }; 496 497 enum exec_status { 498 /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of 499 * them here to silence 'case value not in enumerated type' warnings 500 */ 501 __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION, 502 503 SAS_DEV_NO_RESPONSE = 0x80, 504 SAS_DATA_UNDERRUN, 505 SAS_DATA_OVERRUN, 506 SAS_INTERRUPTED, 507 SAS_QUEUE_FULL, 508 SAS_DEVICE_UNKNOWN, 509 SAS_SG_ERR, 510 SAS_OPEN_REJECT, 511 SAS_OPEN_TO, 512 SAS_PROTO_RESPONSE, 513 SAS_PHY_DOWN, 514 SAS_NAK_R_ERR, 515 SAS_PENDING, 516 SAS_ABORTED_TASK, 517 }; 518 519 /* When a task finishes with a response, the LLDD examines the 520 * response: 521 * - For an ATA task task_status_struct::stat is set to 522 * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the 523 * contents of struct ata_task_resp. 524 * - For SSP tasks, if no data is present or status/TMF response 525 * is valid, task_status_struct::stat is set. If data is present 526 * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets 527 * task_status_struct::buf_valid_size, and task_status_struct::stat is 528 * set to SAM_CHECK_COND. 529 * 530 * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp 531 * for ATA task. 532 * 533 * "frame_len" is the total frame length, which could be more or less 534 * than actually copied. 535 * 536 * Tasks ending with response, always set the residual field. 537 */ 538 struct ata_task_resp { 539 u16 frame_len; 540 u8 ending_fis[24]; /* dev to host or data-in */ 541 }; 542 543 #define SAS_STATUS_BUF_SIZE 96 544 545 struct task_status_struct { 546 enum service_response resp; 547 enum exec_status stat; 548 int buf_valid_size; 549 550 u8 buf[SAS_STATUS_BUF_SIZE]; 551 552 u32 residual; 553 enum sas_open_rej_reason open_rej_reason; 554 }; 555 556 /* ATA and ATAPI task queuable to a SAS LLDD. 557 */ 558 struct sas_ata_task { 559 struct host_to_dev_fis fis; 560 u8 atapi_packet[16]; /* 0 if not ATAPI task */ 561 562 u8 retry_count; /* hardware retry, should be > 0 */ 563 564 u8 dma_xfer:1; /* PIO:0 or DMA:1 */ 565 u8 use_ncq:1; 566 u8 set_affil_pol:1; 567 u8 stp_affil_pol:1; 568 569 u8 device_control_reg_update:1; 570 }; 571 572 struct sas_smp_task { 573 struct scatterlist smp_req; 574 struct scatterlist smp_resp; 575 }; 576 577 enum task_attribute { 578 TASK_ATTR_SIMPLE = 0, 579 TASK_ATTR_HOQ = 1, 580 TASK_ATTR_ORDERED= 2, 581 TASK_ATTR_ACA = 4, 582 }; 583 584 struct sas_ssp_task { 585 u8 retry_count; /* hardware retry, should be > 0 */ 586 587 u8 LUN[8]; 588 u8 enable_first_burst:1; 589 enum task_attribute task_attr; 590 u8 task_prio; 591 u8 cdb[16]; 592 }; 593 594 struct sas_task { 595 struct domain_device *dev; 596 struct list_head list; 597 598 spinlock_t task_state_lock; 599 unsigned task_state_flags; 600 601 enum sas_protocol task_proto; 602 603 /* Used by the discovery code. */ 604 struct timer_list timer; 605 struct completion completion; 606 607 union { 608 struct sas_ata_task ata_task; 609 struct sas_smp_task smp_task; 610 struct sas_ssp_task ssp_task; 611 }; 612 613 struct scatterlist *scatter; 614 int num_scatter; 615 u32 total_xfer_len; 616 u8 data_dir:2; /* Use PCI_DMA_... */ 617 618 struct task_status_struct task_status; 619 void (*task_done)(struct sas_task *); 620 621 void *lldd_task; /* for use by LLDDs */ 622 void *uldd_task; 623 624 struct work_struct abort_work; 625 }; 626 627 #define SAS_TASK_STATE_PENDING 1 628 #define SAS_TASK_STATE_DONE 2 629 #define SAS_TASK_STATE_ABORTED 4 630 #define SAS_TASK_NEED_DEV_RESET 8 631 #define SAS_TASK_AT_INITIATOR 16 632 633 extern struct sas_task *sas_alloc_task(gfp_t flags); 634 extern void sas_free_task(struct sas_task *task); 635 636 struct sas_domain_function_template { 637 /* The class calls these to notify the LLDD of an event. */ 638 void (*lldd_port_formed)(struct asd_sas_phy *); 639 void (*lldd_port_deformed)(struct asd_sas_phy *); 640 641 /* The class calls these when a device is found or gone. */ 642 int (*lldd_dev_found)(struct domain_device *); 643 void (*lldd_dev_gone)(struct domain_device *); 644 645 int (*lldd_execute_task)(struct sas_task *, int num, 646 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_aca)(struct domain_device *, u8 *lun); 652 int (*lldd_clear_task_set)(struct domain_device *, u8 *lun); 653 int (*lldd_I_T_nexus_reset)(struct domain_device *); 654 int (*lldd_ata_check_ready)(struct domain_device *); 655 void (*lldd_ata_set_dmamode)(struct domain_device *); 656 int (*lldd_lu_reset)(struct domain_device *, u8 *lun); 657 int (*lldd_query_task)(struct sas_task *); 658 659 /* Port and Adapter management */ 660 int (*lldd_clear_nexus_port)(struct asd_sas_port *); 661 int (*lldd_clear_nexus_ha)(struct sas_ha_struct *); 662 663 /* Phy management */ 664 int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *); 665 666 /* GPIO support */ 667 int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type, 668 u8 reg_index, u8 reg_count, u8 *write_data); 669 }; 670 671 extern int sas_register_ha(struct sas_ha_struct *); 672 extern int sas_unregister_ha(struct sas_ha_struct *); 673 674 int sas_set_phy_speed(struct sas_phy *phy, 675 struct sas_phy_linkrates *rates); 676 int sas_phy_reset(struct sas_phy *phy, int hard_reset); 677 int sas_queue_up(struct sas_task *task); 678 extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *); 679 extern int sas_target_alloc(struct scsi_target *); 680 extern int sas_slave_configure(struct scsi_device *); 681 extern int sas_change_queue_depth(struct scsi_device *, int new_depth, 682 int reason); 683 extern int sas_change_queue_type(struct scsi_device *, int qt); 684 extern int sas_bios_param(struct scsi_device *, 685 struct block_device *, 686 sector_t capacity, int *hsc); 687 extern struct scsi_transport_template * 688 sas_domain_attach_transport(struct sas_domain_function_template *); 689 extern void sas_domain_release_transport(struct scsi_transport_template *); 690 691 int sas_discover_root_expander(struct domain_device *); 692 693 void sas_init_ex_attr(void); 694 695 int sas_ex_revalidate_domain(struct domain_device *); 696 697 void sas_unregister_domain_devices(struct asd_sas_port *port, int gone); 698 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *); 699 int sas_discover_event(struct asd_sas_port *, enum discover_event ev); 700 701 int sas_discover_sata(struct domain_device *); 702 int sas_discover_end_dev(struct domain_device *); 703 704 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *); 705 706 void sas_init_dev(struct domain_device *); 707 708 void sas_task_abort(struct sas_task *); 709 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd); 710 int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd); 711 712 extern void sas_target_destroy(struct scsi_target *); 713 extern int sas_slave_alloc(struct scsi_device *); 714 extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg); 715 extern int sas_drain_work(struct sas_ha_struct *ha); 716 717 extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, 718 struct request *req); 719 720 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task, 721 struct ssp_response_iu *iu); 722 struct sas_phy *sas_get_local_phy(struct domain_device *dev); 723 724 int sas_request_addr(struct Scsi_Host *shost, u8 *addr); 725 726 #endif /* _SASLIB_H_ */ 727