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 #define ATA_RESP_FIS_SIZE 24 167 168 struct sata_device { 169 enum ata_command_set command_set; 170 struct smp_resp rps_resp; /* report_phy_sata_resp */ 171 u8 port_no; /* port number, if this is a PM (Port) */ 172 struct list_head children; /* PM Ports if this is a PM */ 173 174 struct ata_port *ap; 175 struct ata_host ata_host; 176 u8 fis[ATA_RESP_FIS_SIZE]; 177 }; 178 179 enum { 180 SAS_DEV_GONE, 181 SAS_DEV_DESTROY, 182 }; 183 184 struct domain_device { 185 spinlock_t done_lock; 186 enum sas_dev_type dev_type; 187 188 enum sas_linkrate linkrate; 189 enum sas_linkrate min_linkrate; 190 enum sas_linkrate max_linkrate; 191 192 int pathways; 193 194 struct domain_device *parent; 195 struct list_head siblings; /* devices on the same level */ 196 struct asd_sas_port *port; /* shortcut to root of the tree */ 197 struct sas_phy *phy; 198 199 struct list_head dev_list_node; 200 struct list_head disco_list_node; /* awaiting probe or destruct */ 201 202 enum sas_protocol iproto; 203 enum sas_protocol tproto; 204 205 struct sas_rphy *rphy; 206 207 u8 sas_addr[SAS_ADDR_SIZE]; 208 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; 209 210 u8 frame_rcvd[32]; 211 212 union { 213 struct expander_device ex_dev; 214 struct sata_device sata_dev; /* STP & directly attached */ 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 completion port_gone_completion; 258 259 struct sas_discovery disc; 260 struct domain_device *port_dev; 261 spinlock_t dev_list_lock; 262 struct list_head dev_list; 263 struct list_head disco_list; 264 struct list_head destroy_list; 265 enum sas_linkrate linkrate; 266 267 struct sas_work work; 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 }; 296 297 static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work) 298 { 299 struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work); 300 301 return ev; 302 } 303 304 /* The phy pretty much is controlled by the LLDD. 305 * The class only reads those fields. 306 */ 307 struct asd_sas_phy { 308 /* private: */ 309 struct asd_sas_event port_events[PORT_NUM_EVENTS]; 310 struct asd_sas_event phy_events[PHY_NUM_EVENTS]; 311 312 unsigned long port_events_pending; 313 unsigned long phy_events_pending; 314 315 int error; 316 317 struct sas_phy *phy; 318 319 /* public: */ 320 /* The following are class:RO, driver:R/W */ 321 int enabled; /* must be set */ 322 323 int id; /* must be set */ 324 enum sas_class class; 325 enum sas_protocol iproto; 326 enum sas_protocol tproto; 327 328 enum sas_phy_type type; 329 enum sas_phy_role role; 330 enum sas_oob_mode oob_mode; 331 enum sas_linkrate linkrate; 332 333 u8 *sas_addr; /* must be set */ 334 u8 attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */ 335 336 spinlock_t frame_rcvd_lock; 337 u8 *frame_rcvd; /* must be set */ 338 int frame_rcvd_size; 339 340 spinlock_t sas_prim_lock; 341 u32 sas_prim; 342 343 struct list_head port_phy_el; /* driver:RO */ 344 struct asd_sas_port *port; /* Class:RW, driver: RO */ 345 346 struct sas_ha_struct *ha; /* may be set; the class sets it anyway */ 347 348 void *lldd_phy; /* not touched by the sas_class_code */ 349 }; 350 351 struct scsi_core { 352 struct Scsi_Host *shost; 353 354 struct mutex task_queue_flush; 355 spinlock_t task_queue_lock; 356 struct list_head task_queue; 357 int task_queue_size; 358 359 struct task_struct *queue_thread; 360 }; 361 362 struct sas_ha_event { 363 struct sas_work work; 364 struct sas_ha_struct *ha; 365 }; 366 367 static inline struct sas_ha_event *to_sas_ha_event(struct work_struct *work) 368 { 369 struct sas_ha_event *ev = container_of(work, typeof(*ev), work.work); 370 371 return ev; 372 } 373 374 enum sas_ha_state { 375 SAS_HA_REGISTERED, 376 SAS_HA_DRAINING, 377 SAS_HA_ATA_EH_ACTIVE, 378 SAS_HA_FROZEN, 379 }; 380 381 struct sas_ha_struct { 382 /* private: */ 383 struct sas_ha_event ha_events[HA_NUM_EVENTS]; 384 unsigned long pending; 385 386 struct list_head defer_q; /* work queued while draining */ 387 struct mutex drain_mutex; 388 unsigned long state; 389 spinlock_t state_lock; 390 391 struct mutex disco_mutex; 392 393 struct scsi_core core; 394 395 /* public: */ 396 char *sas_ha_name; 397 struct device *dev; /* should be set */ 398 struct module *lldd_module; /* should be set */ 399 400 u8 *sas_addr; /* must be set */ 401 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; 402 403 spinlock_t phy_port_lock; 404 struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */ 405 struct asd_sas_port **sas_port; /* array of valid pointers, must be set */ 406 int num_phys; /* must be set, gt 0, static */ 407 408 /* The class calls this to send a task for execution. */ 409 int lldd_max_execute_num; 410 int lldd_queue_size; 411 int strict_wide_ports; /* both sas_addr and attached_sas_addr must match 412 * their siblings when forming wide ports */ 413 414 /* LLDD calls these to notify the class of an event. */ 415 void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event); 416 void (*notify_port_event)(struct asd_sas_phy *, enum port_event); 417 void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event); 418 419 void *lldd_ha; /* not touched by sas class code */ 420 421 struct list_head eh_done_q; /* complete via scsi_eh_flush_done_q */ 422 struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */ 423 }; 424 425 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata) 426 427 static inline struct domain_device * 428 starget_to_domain_dev(struct scsi_target *starget) { 429 return starget->hostdata; 430 } 431 432 static inline struct domain_device * 433 sdev_to_domain_dev(struct scsi_device *sdev) { 434 return starget_to_domain_dev(sdev->sdev_target); 435 } 436 437 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev) 438 { 439 return &dev->sata_dev.ap->link.device[0]; 440 } 441 442 static inline struct domain_device * 443 cmd_to_domain_dev(struct scsi_cmnd *cmd) 444 { 445 return sdev_to_domain_dev(cmd->device); 446 } 447 448 void sas_hash_addr(u8 *hashed, const u8 *sas_addr); 449 450 /* Before calling a notify event, LLDD should use this function 451 * when the link is severed (possibly from its tasklet). 452 * The idea is that the Class only reads those, while the LLDD, 453 * can R/W these (thus avoiding a race). 454 */ 455 static inline void sas_phy_disconnected(struct asd_sas_phy *phy) 456 { 457 phy->oob_mode = OOB_NOT_CONNECTED; 458 phy->linkrate = SAS_LINK_RATE_UNKNOWN; 459 } 460 461 static inline unsigned int to_sas_gpio_od(int device, int bit) 462 { 463 return 3 * device + bit; 464 } 465 466 static inline void sas_put_local_phy(struct sas_phy *phy) 467 { 468 put_device(&phy->dev); 469 } 470 471 #ifdef CONFIG_SCSI_SAS_HOST_SMP 472 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count); 473 #else 474 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count) 475 { 476 return -1; 477 } 478 #endif 479 480 /* ---------- Tasks ---------- */ 481 /* 482 service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED | 483 exec_status | | | 484 ---------------------+---------------------+-----------------------+ 485 SAM_... | X | | 486 DEV_NO_RESPONSE | X | X | 487 INTERRUPTED | X | | 488 QUEUE_FULL | | X | 489 DEVICE_UNKNOWN | | X | 490 SG_ERR | | X | 491 ---------------------+---------------------+-----------------------+ 492 */ 493 494 enum service_response { 495 SAS_TASK_COMPLETE, 496 SAS_TASK_UNDELIVERED = -1, 497 }; 498 499 enum exec_status { 500 /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of 501 * them here to silence 'case value not in enumerated type' warnings 502 */ 503 __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION, 504 505 SAS_DEV_NO_RESPONSE = 0x80, 506 SAS_DATA_UNDERRUN, 507 SAS_DATA_OVERRUN, 508 SAS_INTERRUPTED, 509 SAS_QUEUE_FULL, 510 SAS_DEVICE_UNKNOWN, 511 SAS_SG_ERR, 512 SAS_OPEN_REJECT, 513 SAS_OPEN_TO, 514 SAS_PROTO_RESPONSE, 515 SAS_PHY_DOWN, 516 SAS_NAK_R_ERR, 517 SAS_PENDING, 518 SAS_ABORTED_TASK, 519 }; 520 521 /* When a task finishes with a response, the LLDD examines the 522 * response: 523 * - For an ATA task task_status_struct::stat is set to 524 * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the 525 * contents of struct ata_task_resp. 526 * - For SSP tasks, if no data is present or status/TMF response 527 * is valid, task_status_struct::stat is set. If data is present 528 * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets 529 * task_status_struct::buf_valid_size, and task_status_struct::stat is 530 * set to SAM_CHECK_COND. 531 * 532 * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp 533 * for ATA task. 534 * 535 * "frame_len" is the total frame length, which could be more or less 536 * than actually copied. 537 * 538 * Tasks ending with response, always set the residual field. 539 */ 540 struct ata_task_resp { 541 u16 frame_len; 542 u8 ending_fis[ATA_RESP_FIS_SIZE]; /* dev to host or data-in */ 543 }; 544 545 #define SAS_STATUS_BUF_SIZE 96 546 547 struct task_status_struct { 548 enum service_response resp; 549 enum exec_status stat; 550 int buf_valid_size; 551 552 u8 buf[SAS_STATUS_BUF_SIZE]; 553 554 u32 residual; 555 enum sas_open_rej_reason open_rej_reason; 556 }; 557 558 /* ATA and ATAPI task queuable to a SAS LLDD. 559 */ 560 struct sas_ata_task { 561 struct host_to_dev_fis fis; 562 u8 atapi_packet[16]; /* 0 if not ATAPI task */ 563 564 u8 retry_count; /* hardware retry, should be > 0 */ 565 566 u8 dma_xfer:1; /* PIO:0 or DMA:1 */ 567 u8 use_ncq:1; 568 u8 set_affil_pol:1; 569 u8 stp_affil_pol:1; 570 571 u8 device_control_reg_update:1; 572 }; 573 574 struct sas_smp_task { 575 struct scatterlist smp_req; 576 struct scatterlist smp_resp; 577 }; 578 579 enum task_attribute { 580 TASK_ATTR_SIMPLE = 0, 581 TASK_ATTR_HOQ = 1, 582 TASK_ATTR_ORDERED= 2, 583 TASK_ATTR_ACA = 4, 584 }; 585 586 struct sas_ssp_task { 587 u8 retry_count; /* hardware retry, should be > 0 */ 588 589 u8 LUN[8]; 590 u8 enable_first_burst:1; 591 enum task_attribute task_attr; 592 u8 task_prio; 593 u8 cdb[16]; 594 }; 595 596 struct sas_task { 597 struct domain_device *dev; 598 struct list_head list; 599 600 spinlock_t task_state_lock; 601 unsigned task_state_flags; 602 603 enum sas_protocol task_proto; 604 605 /* Used by the discovery code. */ 606 struct timer_list timer; 607 struct completion completion; 608 609 union { 610 struct sas_ata_task ata_task; 611 struct sas_smp_task smp_task; 612 struct sas_ssp_task ssp_task; 613 }; 614 615 struct scatterlist *scatter; 616 int num_scatter; 617 u32 total_xfer_len; 618 u8 data_dir:2; /* Use PCI_DMA_... */ 619 620 struct task_status_struct task_status; 621 void (*task_done)(struct sas_task *); 622 623 void *lldd_task; /* for use by LLDDs */ 624 void *uldd_task; 625 626 struct work_struct abort_work; 627 }; 628 629 #define SAS_TASK_STATE_PENDING 1 630 #define SAS_TASK_STATE_DONE 2 631 #define SAS_TASK_STATE_ABORTED 4 632 #define SAS_TASK_NEED_DEV_RESET 8 633 #define SAS_TASK_AT_INITIATOR 16 634 635 extern struct sas_task *sas_alloc_task(gfp_t flags); 636 extern void sas_free_task(struct sas_task *task); 637 638 struct sas_domain_function_template { 639 /* The class calls these to notify the LLDD of an event. */ 640 void (*lldd_port_formed)(struct asd_sas_phy *); 641 void (*lldd_port_deformed)(struct asd_sas_phy *); 642 643 /* The class calls these when a device is found or gone. */ 644 int (*lldd_dev_found)(struct domain_device *); 645 void (*lldd_dev_gone)(struct domain_device *); 646 647 int (*lldd_execute_task)(struct sas_task *, int num, 648 gfp_t gfp_flags); 649 650 /* Task Management Functions. Must be called from process context. */ 651 int (*lldd_abort_task)(struct sas_task *); 652 int (*lldd_abort_task_set)(struct domain_device *, u8 *lun); 653 int (*lldd_clear_aca)(struct domain_device *, u8 *lun); 654 int (*lldd_clear_task_set)(struct domain_device *, u8 *lun); 655 int (*lldd_I_T_nexus_reset)(struct domain_device *); 656 int (*lldd_ata_check_ready)(struct domain_device *); 657 void (*lldd_ata_set_dmamode)(struct domain_device *); 658 int (*lldd_lu_reset)(struct domain_device *, u8 *lun); 659 int (*lldd_query_task)(struct sas_task *); 660 661 /* Port and Adapter management */ 662 int (*lldd_clear_nexus_port)(struct asd_sas_port *); 663 int (*lldd_clear_nexus_ha)(struct sas_ha_struct *); 664 665 /* Phy management */ 666 int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *); 667 668 /* GPIO support */ 669 int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type, 670 u8 reg_index, u8 reg_count, u8 *write_data); 671 }; 672 673 extern int sas_register_ha(struct sas_ha_struct *); 674 extern int sas_unregister_ha(struct sas_ha_struct *); 675 676 int sas_set_phy_speed(struct sas_phy *phy, 677 struct sas_phy_linkrates *rates); 678 int sas_phy_reset(struct sas_phy *phy, int hard_reset); 679 int sas_queue_up(struct sas_task *task); 680 extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *); 681 extern int sas_target_alloc(struct scsi_target *); 682 extern int sas_slave_configure(struct scsi_device *); 683 extern int sas_change_queue_depth(struct scsi_device *, int new_depth, 684 int reason); 685 extern int sas_change_queue_type(struct scsi_device *, int qt); 686 extern int sas_bios_param(struct scsi_device *, 687 struct block_device *, 688 sector_t capacity, int *hsc); 689 extern struct scsi_transport_template * 690 sas_domain_attach_transport(struct sas_domain_function_template *); 691 extern void sas_domain_release_transport(struct scsi_transport_template *); 692 693 int sas_discover_root_expander(struct domain_device *); 694 695 void sas_init_ex_attr(void); 696 697 int sas_ex_revalidate_domain(struct domain_device *); 698 699 void sas_unregister_domain_devices(struct asd_sas_port *port, int gone); 700 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *); 701 int sas_discover_event(struct asd_sas_port *, enum discover_event ev); 702 703 int sas_discover_sata(struct domain_device *); 704 int sas_discover_end_dev(struct domain_device *); 705 706 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *); 707 708 void sas_init_dev(struct domain_device *); 709 710 void sas_task_abort(struct sas_task *); 711 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd); 712 int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd); 713 714 extern void sas_target_destroy(struct scsi_target *); 715 extern int sas_slave_alloc(struct scsi_device *); 716 extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg); 717 extern int sas_drain_work(struct sas_ha_struct *ha); 718 719 extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, 720 struct request *req); 721 722 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task, 723 struct ssp_response_iu *iu); 724 struct sas_phy *sas_get_local_phy(struct domain_device *dev); 725 726 int sas_request_addr(struct Scsi_Host *shost, u8 *addr); 727 728 #endif /* _SASLIB_H_ */ 729