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 PHYE_RESUME_TIMEOUT = 4, 83 PHY_NUM_EVENTS = 5, 84 }; 85 86 enum discover_event { 87 DISCE_DISCOVER_DOMAIN = 0U, 88 DISCE_REVALIDATE_DOMAIN = 1, 89 DISCE_PORT_GONE = 2, 90 DISCE_PROBE = 3, 91 DISCE_SUSPEND = 4, 92 DISCE_RESUME = 5, 93 DISCE_DESTRUCT = 6, 94 DISC_NUM_EVENTS = 7, 95 }; 96 97 /* ---------- Expander Devices ---------- */ 98 99 #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj) 100 #define to_dev_attr(_attr) container_of(_attr, struct domain_dev_attribute,\ 101 attr) 102 103 enum routing_attribute { 104 DIRECT_ROUTING, 105 SUBTRACTIVE_ROUTING, 106 TABLE_ROUTING, 107 }; 108 109 enum ex_phy_state { 110 PHY_EMPTY, 111 PHY_VACANT, 112 PHY_NOT_PRESENT, 113 PHY_DEVICE_DISCOVERED 114 }; 115 116 struct ex_phy { 117 int phy_id; 118 119 enum ex_phy_state phy_state; 120 121 enum sas_device_type attached_dev_type; 122 enum sas_linkrate linkrate; 123 124 u8 attached_sata_host:1; 125 u8 attached_sata_dev:1; 126 u8 attached_sata_ps:1; 127 128 enum sas_protocol attached_tproto; 129 enum sas_protocol attached_iproto; 130 131 u8 attached_sas_addr[SAS_ADDR_SIZE]; 132 u8 attached_phy_id; 133 134 int phy_change_count; 135 enum routing_attribute routing_attr; 136 u8 virtual:1; 137 138 int last_da_index; 139 140 struct sas_phy *phy; 141 struct sas_port *port; 142 }; 143 144 struct expander_device { 145 struct list_head children; 146 147 int ex_change_count; 148 u16 max_route_indexes; 149 u8 num_phys; 150 151 u8 t2t_supp:1; 152 u8 configuring:1; 153 u8 conf_route_table:1; 154 155 u8 enclosure_logical_id[8]; 156 157 struct ex_phy *ex_phy; 158 struct sas_port *parent_port; 159 160 struct mutex cmd_mutex; 161 }; 162 163 /* ---------- SATA device ---------- */ 164 #define ATA_RESP_FIS_SIZE 24 165 166 struct sata_device { 167 unsigned int class; 168 struct smp_resp rps_resp; /* report_phy_sata_resp */ 169 u8 port_no; /* port number, if this is a PM (Port) */ 170 171 struct ata_port *ap; 172 struct ata_host ata_host; 173 u8 fis[ATA_RESP_FIS_SIZE]; 174 }; 175 176 struct ssp_device { 177 struct list_head eh_list_node; /* pending a user requested eh action */ 178 struct scsi_lun reset_lun; 179 }; 180 181 enum { 182 SAS_DEV_GONE, 183 SAS_DEV_FOUND, /* device notified to lldd */ 184 SAS_DEV_DESTROY, 185 SAS_DEV_EH_PENDING, 186 SAS_DEV_LU_RESET, 187 SAS_DEV_RESET, 188 }; 189 190 struct domain_device { 191 spinlock_t done_lock; 192 enum sas_device_type dev_type; 193 194 enum sas_linkrate linkrate; 195 enum sas_linkrate min_linkrate; 196 enum sas_linkrate max_linkrate; 197 198 int pathways; 199 200 struct domain_device *parent; 201 struct list_head siblings; /* devices on the same level */ 202 struct asd_sas_port *port; /* shortcut to root of the tree */ 203 struct sas_phy *phy; 204 205 struct list_head dev_list_node; 206 struct list_head disco_list_node; /* awaiting probe or destruct */ 207 208 enum sas_protocol iproto; 209 enum sas_protocol tproto; 210 211 struct sas_rphy *rphy; 212 213 u8 sas_addr[SAS_ADDR_SIZE]; 214 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; 215 216 u8 frame_rcvd[32]; 217 218 union { 219 struct expander_device ex_dev; 220 struct sata_device sata_dev; /* STP & directly attached */ 221 struct ssp_device ssp_dev; 222 }; 223 224 void *lldd_dev; 225 unsigned long state; 226 struct kref kref; 227 }; 228 229 struct sas_work { 230 struct list_head drain_node; 231 struct work_struct work; 232 }; 233 234 static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *)) 235 { 236 INIT_WORK(&sw->work, fn); 237 INIT_LIST_HEAD(&sw->drain_node); 238 } 239 240 struct sas_discovery_event { 241 struct sas_work work; 242 struct asd_sas_port *port; 243 }; 244 245 static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work) 246 { 247 struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work); 248 249 return ev; 250 } 251 252 struct sas_discovery { 253 struct sas_discovery_event disc_work[DISC_NUM_EVENTS]; 254 unsigned long pending; 255 u8 fanout_sas_addr[8]; 256 u8 eeds_a[8]; 257 u8 eeds_b[8]; 258 int max_level; 259 }; 260 261 /* The port struct is Class:RW, driver:RO */ 262 struct asd_sas_port { 263 /* private: */ 264 struct completion port_gone_completion; 265 266 struct sas_discovery disc; 267 struct domain_device *port_dev; 268 spinlock_t dev_list_lock; 269 struct list_head dev_list; 270 struct list_head disco_list; 271 struct list_head destroy_list; 272 enum sas_linkrate linkrate; 273 274 struct sas_work work; 275 int suspended; 276 277 /* public: */ 278 int id; 279 280 enum sas_class class; 281 u8 sas_addr[SAS_ADDR_SIZE]; 282 u8 attached_sas_addr[SAS_ADDR_SIZE]; 283 enum sas_protocol iproto; 284 enum sas_protocol tproto; 285 286 enum sas_oob_mode oob_mode; 287 288 spinlock_t phy_list_lock; 289 struct list_head phy_list; 290 int num_phys; 291 u32 phy_mask; 292 293 struct sas_ha_struct *ha; 294 295 struct sas_port *port; 296 297 void *lldd_port; /* not touched by the sas class code */ 298 }; 299 300 struct asd_sas_event { 301 struct sas_work work; 302 struct asd_sas_phy *phy; 303 }; 304 305 static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work) 306 { 307 struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work); 308 309 return ev; 310 } 311 312 /* The phy pretty much is controlled by the LLDD. 313 * The class only reads those fields. 314 */ 315 struct asd_sas_phy { 316 /* private: */ 317 struct asd_sas_event port_events[PORT_NUM_EVENTS]; 318 struct asd_sas_event phy_events[PHY_NUM_EVENTS]; 319 320 unsigned long port_events_pending; 321 unsigned long phy_events_pending; 322 323 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 struct mutex task_queue_flush; 364 spinlock_t task_queue_lock; 365 struct list_head task_queue; 366 int task_queue_size; 367 368 struct task_struct *queue_thread; 369 }; 370 371 struct sas_ha_event { 372 struct sas_work work; 373 struct sas_ha_struct *ha; 374 }; 375 376 static inline struct sas_ha_event *to_sas_ha_event(struct work_struct *work) 377 { 378 struct sas_ha_event *ev = container_of(work, typeof(*ev), work.work); 379 380 return ev; 381 } 382 383 enum sas_ha_state { 384 SAS_HA_REGISTERED, 385 SAS_HA_DRAINING, 386 SAS_HA_ATA_EH_ACTIVE, 387 SAS_HA_FROZEN, 388 }; 389 390 struct sas_ha_struct { 391 /* private: */ 392 struct sas_ha_event ha_events[HA_NUM_EVENTS]; 393 unsigned long pending; 394 395 struct list_head defer_q; /* work queued while draining */ 396 struct mutex drain_mutex; 397 unsigned long state; 398 spinlock_t lock; 399 int eh_active; 400 wait_queue_head_t eh_wait_q; 401 struct list_head eh_dev_q; 402 403 struct mutex disco_mutex; 404 405 struct scsi_core core; 406 407 /* public: */ 408 char *sas_ha_name; 409 struct device *dev; /* should be set */ 410 struct module *lldd_module; /* should be set */ 411 412 u8 *sas_addr; /* must be set */ 413 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; 414 415 spinlock_t phy_port_lock; 416 struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */ 417 struct asd_sas_port **sas_port; /* array of valid pointers, must be set */ 418 int num_phys; /* must be set, gt 0, static */ 419 420 /* The class calls this to send a task for execution. */ 421 int lldd_max_execute_num; 422 int lldd_queue_size; 423 int strict_wide_ports; /* both sas_addr and attached_sas_addr must match 424 * their siblings when forming wide ports */ 425 426 /* LLDD calls these to notify the class of an event. */ 427 void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event); 428 void (*notify_port_event)(struct asd_sas_phy *, enum port_event); 429 void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event); 430 431 void *lldd_ha; /* not touched by sas class code */ 432 433 struct list_head eh_done_q; /* complete via scsi_eh_flush_done_q */ 434 struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */ 435 }; 436 437 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata) 438 439 static inline struct domain_device * 440 starget_to_domain_dev(struct scsi_target *starget) { 441 return starget->hostdata; 442 } 443 444 static inline struct domain_device * 445 sdev_to_domain_dev(struct scsi_device *sdev) { 446 return starget_to_domain_dev(sdev->sdev_target); 447 } 448 449 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev) 450 { 451 return &dev->sata_dev.ap->link.device[0]; 452 } 453 454 static inline struct domain_device * 455 cmd_to_domain_dev(struct scsi_cmnd *cmd) 456 { 457 return sdev_to_domain_dev(cmd->device); 458 } 459 460 void sas_hash_addr(u8 *hashed, const u8 *sas_addr); 461 462 /* Before calling a notify event, LLDD should use this function 463 * when the link is severed (possibly from its tasklet). 464 * The idea is that the Class only reads those, while the LLDD, 465 * can R/W these (thus avoiding a race). 466 */ 467 static inline void sas_phy_disconnected(struct asd_sas_phy *phy) 468 { 469 phy->oob_mode = OOB_NOT_CONNECTED; 470 phy->linkrate = SAS_LINK_RATE_UNKNOWN; 471 } 472 473 static inline unsigned int to_sas_gpio_od(int device, int bit) 474 { 475 return 3 * device + bit; 476 } 477 478 static inline void sas_put_local_phy(struct sas_phy *phy) 479 { 480 put_device(&phy->dev); 481 } 482 483 #ifdef CONFIG_SCSI_SAS_HOST_SMP 484 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count); 485 #else 486 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count) 487 { 488 return -1; 489 } 490 #endif 491 492 /* ---------- Tasks ---------- */ 493 /* 494 service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED | 495 exec_status | | | 496 ---------------------+---------------------+-----------------------+ 497 SAM_... | X | | 498 DEV_NO_RESPONSE | X | X | 499 INTERRUPTED | X | | 500 QUEUE_FULL | | X | 501 DEVICE_UNKNOWN | | X | 502 SG_ERR | | X | 503 ---------------------+---------------------+-----------------------+ 504 */ 505 506 enum service_response { 507 SAS_TASK_COMPLETE, 508 SAS_TASK_UNDELIVERED = -1, 509 }; 510 511 enum exec_status { 512 /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of 513 * them here to silence 'case value not in enumerated type' warnings 514 */ 515 __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION, 516 517 SAS_DEV_NO_RESPONSE = 0x80, 518 SAS_DATA_UNDERRUN, 519 SAS_DATA_OVERRUN, 520 SAS_INTERRUPTED, 521 SAS_QUEUE_FULL, 522 SAS_DEVICE_UNKNOWN, 523 SAS_SG_ERR, 524 SAS_OPEN_REJECT, 525 SAS_OPEN_TO, 526 SAS_PROTO_RESPONSE, 527 SAS_PHY_DOWN, 528 SAS_NAK_R_ERR, 529 SAS_PENDING, 530 SAS_ABORTED_TASK, 531 }; 532 533 /* When a task finishes with a response, the LLDD examines the 534 * response: 535 * - For an ATA task task_status_struct::stat is set to 536 * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the 537 * contents of struct ata_task_resp. 538 * - For SSP tasks, if no data is present or status/TMF response 539 * is valid, task_status_struct::stat is set. If data is present 540 * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets 541 * task_status_struct::buf_valid_size, and task_status_struct::stat is 542 * set to SAM_CHECK_COND. 543 * 544 * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp 545 * for ATA task. 546 * 547 * "frame_len" is the total frame length, which could be more or less 548 * than actually copied. 549 * 550 * Tasks ending with response, always set the residual field. 551 */ 552 struct ata_task_resp { 553 u16 frame_len; 554 u8 ending_fis[ATA_RESP_FIS_SIZE]; /* dev to host or data-in */ 555 }; 556 557 #define SAS_STATUS_BUF_SIZE 96 558 559 struct task_status_struct { 560 enum service_response resp; 561 enum exec_status stat; 562 int buf_valid_size; 563 564 u8 buf[SAS_STATUS_BUF_SIZE]; 565 566 u32 residual; 567 enum sas_open_rej_reason open_rej_reason; 568 }; 569 570 /* ATA and ATAPI task queuable to a SAS LLDD. 571 */ 572 struct sas_ata_task { 573 struct host_to_dev_fis fis; 574 u8 atapi_packet[16]; /* 0 if not ATAPI task */ 575 576 u8 retry_count; /* hardware retry, should be > 0 */ 577 578 u8 dma_xfer:1; /* PIO:0 or DMA:1 */ 579 u8 use_ncq:1; 580 u8 set_affil_pol:1; 581 u8 stp_affil_pol:1; 582 583 u8 device_control_reg_update:1; 584 }; 585 586 struct sas_smp_task { 587 struct scatterlist smp_req; 588 struct scatterlist smp_resp; 589 }; 590 591 enum task_attribute { 592 TASK_ATTR_SIMPLE = 0, 593 TASK_ATTR_HOQ = 1, 594 TASK_ATTR_ORDERED= 2, 595 TASK_ATTR_ACA = 4, 596 }; 597 598 struct sas_ssp_task { 599 u8 retry_count; /* hardware retry, should be > 0 */ 600 601 u8 LUN[8]; 602 u8 enable_first_burst:1; 603 enum task_attribute task_attr; 604 u8 task_prio; 605 struct scsi_cmnd *cmd; 606 }; 607 608 struct sas_task { 609 struct domain_device *dev; 610 struct list_head list; 611 612 spinlock_t task_state_lock; 613 unsigned task_state_flags; 614 615 enum sas_protocol task_proto; 616 617 union { 618 struct sas_ata_task ata_task; 619 struct sas_smp_task smp_task; 620 struct sas_ssp_task ssp_task; 621 }; 622 623 struct scatterlist *scatter; 624 int num_scatter; 625 u32 total_xfer_len; 626 u8 data_dir:2; /* Use PCI_DMA_... */ 627 628 struct task_status_struct task_status; 629 void (*task_done)(struct sas_task *); 630 631 void *lldd_task; /* for use by LLDDs */ 632 void *uldd_task; 633 struct sas_task_slow *slow_task; 634 }; 635 636 struct sas_task_slow { 637 /* standard/extra infrastructure for slow path commands (SMP and 638 * internal lldd commands 639 */ 640 struct timer_list timer; 641 struct completion completion; 642 }; 643 644 #define SAS_TASK_STATE_PENDING 1 645 #define SAS_TASK_STATE_DONE 2 646 #define SAS_TASK_STATE_ABORTED 4 647 #define SAS_TASK_NEED_DEV_RESET 8 648 #define SAS_TASK_AT_INITIATOR 16 649 650 extern struct sas_task *sas_alloc_task(gfp_t flags); 651 extern struct sas_task *sas_alloc_slow_task(gfp_t flags); 652 extern void sas_free_task(struct sas_task *task); 653 654 struct sas_domain_function_template { 655 /* The class calls these to notify the LLDD of an event. */ 656 void (*lldd_port_formed)(struct asd_sas_phy *); 657 void (*lldd_port_deformed)(struct asd_sas_phy *); 658 659 /* The class calls these when a device is found or gone. */ 660 int (*lldd_dev_found)(struct domain_device *); 661 void (*lldd_dev_gone)(struct domain_device *); 662 663 int (*lldd_execute_task)(struct sas_task *, int num, 664 gfp_t gfp_flags); 665 666 /* Task Management Functions. Must be called from process context. */ 667 int (*lldd_abort_task)(struct sas_task *); 668 int (*lldd_abort_task_set)(struct domain_device *, u8 *lun); 669 int (*lldd_clear_aca)(struct domain_device *, u8 *lun); 670 int (*lldd_clear_task_set)(struct domain_device *, u8 *lun); 671 int (*lldd_I_T_nexus_reset)(struct domain_device *); 672 int (*lldd_ata_check_ready)(struct domain_device *); 673 void (*lldd_ata_set_dmamode)(struct domain_device *); 674 int (*lldd_lu_reset)(struct domain_device *, u8 *lun); 675 int (*lldd_query_task)(struct sas_task *); 676 677 /* Port and Adapter management */ 678 int (*lldd_clear_nexus_port)(struct asd_sas_port *); 679 int (*lldd_clear_nexus_ha)(struct sas_ha_struct *); 680 681 /* Phy management */ 682 int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *); 683 684 /* GPIO support */ 685 int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type, 686 u8 reg_index, u8 reg_count, u8 *write_data); 687 }; 688 689 extern int sas_register_ha(struct sas_ha_struct *); 690 extern int sas_unregister_ha(struct sas_ha_struct *); 691 extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha); 692 extern void sas_resume_ha(struct sas_ha_struct *sas_ha); 693 extern void sas_suspend_ha(struct sas_ha_struct *sas_ha); 694 695 int sas_set_phy_speed(struct sas_phy *phy, 696 struct sas_phy_linkrates *rates); 697 int sas_phy_reset(struct sas_phy *phy, int hard_reset); 698 int sas_queue_up(struct sas_task *task); 699 extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *); 700 extern int sas_target_alloc(struct scsi_target *); 701 extern int sas_slave_configure(struct scsi_device *); 702 extern int sas_change_queue_depth(struct scsi_device *, int new_depth, 703 int reason); 704 extern int sas_change_queue_type(struct scsi_device *, int qt); 705 extern int sas_bios_param(struct scsi_device *, 706 struct block_device *, 707 sector_t capacity, int *hsc); 708 extern struct scsi_transport_template * 709 sas_domain_attach_transport(struct sas_domain_function_template *); 710 extern void sas_domain_release_transport(struct scsi_transport_template *); 711 712 int sas_discover_root_expander(struct domain_device *); 713 714 void sas_init_ex_attr(void); 715 716 int sas_ex_revalidate_domain(struct domain_device *); 717 718 void sas_unregister_domain_devices(struct asd_sas_port *port, int gone); 719 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *); 720 int sas_discover_event(struct asd_sas_port *, enum discover_event ev); 721 722 int sas_discover_sata(struct domain_device *); 723 int sas_discover_end_dev(struct domain_device *); 724 725 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *); 726 727 void sas_init_dev(struct domain_device *); 728 729 void sas_task_abort(struct sas_task *); 730 int sas_eh_abort_handler(struct scsi_cmnd *cmd); 731 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd); 732 int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd); 733 734 extern void sas_target_destroy(struct scsi_target *); 735 extern int sas_slave_alloc(struct scsi_device *); 736 extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg); 737 extern int sas_drain_work(struct sas_ha_struct *ha); 738 739 extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, 740 struct request *req); 741 742 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task, 743 struct ssp_response_iu *iu); 744 struct sas_phy *sas_get_local_phy(struct domain_device *dev); 745 746 int sas_request_addr(struct Scsi_Host *shost, u8 *addr); 747 748 #endif /* _SASLIB_H_ */ 749