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 enum ata_command_set { 165 ATA_COMMAND_SET = 0, 166 ATAPI_COMMAND_SET = 1, 167 }; 168 169 #define ATA_RESP_FIS_SIZE 24 170 171 struct sata_device { 172 enum ata_command_set command_set; 173 struct smp_resp rps_resp; /* report_phy_sata_resp */ 174 u8 port_no; /* port number, if this is a PM (Port) */ 175 176 struct ata_port *ap; 177 struct ata_host ata_host; 178 u8 fis[ATA_RESP_FIS_SIZE]; 179 }; 180 181 struct ssp_device { 182 struct list_head eh_list_node; /* pending a user requested eh action */ 183 struct scsi_lun reset_lun; 184 }; 185 186 enum { 187 SAS_DEV_GONE, 188 SAS_DEV_FOUND, /* device notified to lldd */ 189 SAS_DEV_DESTROY, 190 SAS_DEV_EH_PENDING, 191 SAS_DEV_LU_RESET, 192 SAS_DEV_RESET, 193 }; 194 195 struct domain_device { 196 spinlock_t done_lock; 197 enum sas_device_type dev_type; 198 199 enum sas_linkrate linkrate; 200 enum sas_linkrate min_linkrate; 201 enum sas_linkrate max_linkrate; 202 203 int pathways; 204 205 struct domain_device *parent; 206 struct list_head siblings; /* devices on the same level */ 207 struct asd_sas_port *port; /* shortcut to root of the tree */ 208 struct sas_phy *phy; 209 210 struct list_head dev_list_node; 211 struct list_head disco_list_node; /* awaiting probe or destruct */ 212 213 enum sas_protocol iproto; 214 enum sas_protocol tproto; 215 216 struct sas_rphy *rphy; 217 218 u8 sas_addr[SAS_ADDR_SIZE]; 219 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; 220 221 u8 frame_rcvd[32]; 222 223 union { 224 struct expander_device ex_dev; 225 struct sata_device sata_dev; /* STP & directly attached */ 226 struct ssp_device ssp_dev; 227 }; 228 229 void *lldd_dev; 230 unsigned long state; 231 struct kref kref; 232 }; 233 234 struct sas_work { 235 struct list_head drain_node; 236 struct work_struct work; 237 }; 238 239 static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *)) 240 { 241 INIT_WORK(&sw->work, fn); 242 INIT_LIST_HEAD(&sw->drain_node); 243 } 244 245 struct sas_discovery_event { 246 struct sas_work work; 247 struct asd_sas_port *port; 248 }; 249 250 static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work) 251 { 252 struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work); 253 254 return ev; 255 } 256 257 struct sas_discovery { 258 struct sas_discovery_event disc_work[DISC_NUM_EVENTS]; 259 unsigned long pending; 260 u8 fanout_sas_addr[8]; 261 u8 eeds_a[8]; 262 u8 eeds_b[8]; 263 int max_level; 264 }; 265 266 /* The port struct is Class:RW, driver:RO */ 267 struct asd_sas_port { 268 /* private: */ 269 struct completion port_gone_completion; 270 271 struct sas_discovery disc; 272 struct domain_device *port_dev; 273 spinlock_t dev_list_lock; 274 struct list_head dev_list; 275 struct list_head disco_list; 276 struct list_head destroy_list; 277 enum sas_linkrate linkrate; 278 279 struct sas_work work; 280 int suspended; 281 282 /* public: */ 283 int id; 284 285 enum sas_class class; 286 u8 sas_addr[SAS_ADDR_SIZE]; 287 u8 attached_sas_addr[SAS_ADDR_SIZE]; 288 enum sas_protocol iproto; 289 enum sas_protocol tproto; 290 291 enum sas_oob_mode oob_mode; 292 293 spinlock_t phy_list_lock; 294 struct list_head phy_list; 295 int num_phys; 296 u32 phy_mask; 297 298 struct sas_ha_struct *ha; 299 300 struct sas_port *port; 301 302 void *lldd_port; /* not touched by the sas class code */ 303 }; 304 305 struct asd_sas_event { 306 struct sas_work work; 307 struct asd_sas_phy *phy; 308 }; 309 310 static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work) 311 { 312 struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work); 313 314 return ev; 315 } 316 317 /* The phy pretty much is controlled by the LLDD. 318 * The class only reads those fields. 319 */ 320 struct asd_sas_phy { 321 /* private: */ 322 struct asd_sas_event port_events[PORT_NUM_EVENTS]; 323 struct asd_sas_event phy_events[PHY_NUM_EVENTS]; 324 325 unsigned long port_events_pending; 326 unsigned long phy_events_pending; 327 328 int error; 329 int suspended; 330 331 struct sas_phy *phy; 332 333 /* public: */ 334 /* The following are class:RO, driver:R/W */ 335 int enabled; /* must be set */ 336 337 int id; /* must be set */ 338 enum sas_class class; 339 enum sas_protocol iproto; 340 enum sas_protocol tproto; 341 342 enum sas_phy_type type; 343 enum sas_phy_role role; 344 enum sas_oob_mode oob_mode; 345 enum sas_linkrate linkrate; 346 347 u8 *sas_addr; /* must be set */ 348 u8 attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */ 349 350 spinlock_t frame_rcvd_lock; 351 u8 *frame_rcvd; /* must be set */ 352 int frame_rcvd_size; 353 354 spinlock_t sas_prim_lock; 355 u32 sas_prim; 356 357 struct list_head port_phy_el; /* driver:RO */ 358 struct asd_sas_port *port; /* Class:RW, driver: RO */ 359 360 struct sas_ha_struct *ha; /* may be set; the class sets it anyway */ 361 362 void *lldd_phy; /* not touched by the sas_class_code */ 363 }; 364 365 struct scsi_core { 366 struct Scsi_Host *shost; 367 368 struct mutex task_queue_flush; 369 spinlock_t task_queue_lock; 370 struct list_head task_queue; 371 int task_queue_size; 372 373 struct task_struct *queue_thread; 374 }; 375 376 struct sas_ha_event { 377 struct sas_work work; 378 struct sas_ha_struct *ha; 379 }; 380 381 static inline struct sas_ha_event *to_sas_ha_event(struct work_struct *work) 382 { 383 struct sas_ha_event *ev = container_of(work, typeof(*ev), work.work); 384 385 return ev; 386 } 387 388 enum sas_ha_state { 389 SAS_HA_REGISTERED, 390 SAS_HA_DRAINING, 391 SAS_HA_ATA_EH_ACTIVE, 392 SAS_HA_FROZEN, 393 }; 394 395 struct sas_ha_struct { 396 /* private: */ 397 struct sas_ha_event ha_events[HA_NUM_EVENTS]; 398 unsigned long pending; 399 400 struct list_head defer_q; /* work queued while draining */ 401 struct mutex drain_mutex; 402 unsigned long state; 403 spinlock_t lock; 404 int eh_active; 405 wait_queue_head_t eh_wait_q; 406 struct list_head eh_dev_q; 407 408 struct mutex disco_mutex; 409 410 struct scsi_core core; 411 412 /* public: */ 413 char *sas_ha_name; 414 struct device *dev; /* should be set */ 415 struct module *lldd_module; /* should be set */ 416 417 u8 *sas_addr; /* must be set */ 418 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; 419 420 spinlock_t phy_port_lock; 421 struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */ 422 struct asd_sas_port **sas_port; /* array of valid pointers, must be set */ 423 int num_phys; /* must be set, gt 0, static */ 424 425 /* The class calls this to send a task for execution. */ 426 int lldd_max_execute_num; 427 int lldd_queue_size; 428 int strict_wide_ports; /* both sas_addr and attached_sas_addr must match 429 * their siblings when forming wide ports */ 430 431 /* LLDD calls these to notify the class of an event. */ 432 void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event); 433 void (*notify_port_event)(struct asd_sas_phy *, enum port_event); 434 void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event); 435 436 void *lldd_ha; /* not touched by sas class code */ 437 438 struct list_head eh_done_q; /* complete via scsi_eh_flush_done_q */ 439 struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */ 440 }; 441 442 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata) 443 444 static inline struct domain_device * 445 starget_to_domain_dev(struct scsi_target *starget) { 446 return starget->hostdata; 447 } 448 449 static inline struct domain_device * 450 sdev_to_domain_dev(struct scsi_device *sdev) { 451 return starget_to_domain_dev(sdev->sdev_target); 452 } 453 454 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev) 455 { 456 return &dev->sata_dev.ap->link.device[0]; 457 } 458 459 static inline struct domain_device * 460 cmd_to_domain_dev(struct scsi_cmnd *cmd) 461 { 462 return sdev_to_domain_dev(cmd->device); 463 } 464 465 void sas_hash_addr(u8 *hashed, const u8 *sas_addr); 466 467 /* Before calling a notify event, LLDD should use this function 468 * when the link is severed (possibly from its tasklet). 469 * The idea is that the Class only reads those, while the LLDD, 470 * can R/W these (thus avoiding a race). 471 */ 472 static inline void sas_phy_disconnected(struct asd_sas_phy *phy) 473 { 474 phy->oob_mode = OOB_NOT_CONNECTED; 475 phy->linkrate = SAS_LINK_RATE_UNKNOWN; 476 } 477 478 static inline unsigned int to_sas_gpio_od(int device, int bit) 479 { 480 return 3 * device + bit; 481 } 482 483 static inline void sas_put_local_phy(struct sas_phy *phy) 484 { 485 put_device(&phy->dev); 486 } 487 488 #ifdef CONFIG_SCSI_SAS_HOST_SMP 489 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count); 490 #else 491 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count) 492 { 493 return -1; 494 } 495 #endif 496 497 /* ---------- Tasks ---------- */ 498 /* 499 service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED | 500 exec_status | | | 501 ---------------------+---------------------+-----------------------+ 502 SAM_... | X | | 503 DEV_NO_RESPONSE | X | X | 504 INTERRUPTED | X | | 505 QUEUE_FULL | | X | 506 DEVICE_UNKNOWN | | X | 507 SG_ERR | | X | 508 ---------------------+---------------------+-----------------------+ 509 */ 510 511 enum service_response { 512 SAS_TASK_COMPLETE, 513 SAS_TASK_UNDELIVERED = -1, 514 }; 515 516 enum exec_status { 517 /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of 518 * them here to silence 'case value not in enumerated type' warnings 519 */ 520 __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION, 521 522 SAS_DEV_NO_RESPONSE = 0x80, 523 SAS_DATA_UNDERRUN, 524 SAS_DATA_OVERRUN, 525 SAS_INTERRUPTED, 526 SAS_QUEUE_FULL, 527 SAS_DEVICE_UNKNOWN, 528 SAS_SG_ERR, 529 SAS_OPEN_REJECT, 530 SAS_OPEN_TO, 531 SAS_PROTO_RESPONSE, 532 SAS_PHY_DOWN, 533 SAS_NAK_R_ERR, 534 SAS_PENDING, 535 SAS_ABORTED_TASK, 536 }; 537 538 /* When a task finishes with a response, the LLDD examines the 539 * response: 540 * - For an ATA task task_status_struct::stat is set to 541 * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the 542 * contents of struct ata_task_resp. 543 * - For SSP tasks, if no data is present or status/TMF response 544 * is valid, task_status_struct::stat is set. If data is present 545 * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets 546 * task_status_struct::buf_valid_size, and task_status_struct::stat is 547 * set to SAM_CHECK_COND. 548 * 549 * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp 550 * for ATA task. 551 * 552 * "frame_len" is the total frame length, which could be more or less 553 * than actually copied. 554 * 555 * Tasks ending with response, always set the residual field. 556 */ 557 struct ata_task_resp { 558 u16 frame_len; 559 u8 ending_fis[ATA_RESP_FIS_SIZE]; /* dev to host or data-in */ 560 }; 561 562 #define SAS_STATUS_BUF_SIZE 96 563 564 struct task_status_struct { 565 enum service_response resp; 566 enum exec_status stat; 567 int buf_valid_size; 568 569 u8 buf[SAS_STATUS_BUF_SIZE]; 570 571 u32 residual; 572 enum sas_open_rej_reason open_rej_reason; 573 }; 574 575 /* ATA and ATAPI task queuable to a SAS LLDD. 576 */ 577 struct sas_ata_task { 578 struct host_to_dev_fis fis; 579 u8 atapi_packet[16]; /* 0 if not ATAPI task */ 580 581 u8 retry_count; /* hardware retry, should be > 0 */ 582 583 u8 dma_xfer:1; /* PIO:0 or DMA:1 */ 584 u8 use_ncq:1; 585 u8 set_affil_pol:1; 586 u8 stp_affil_pol:1; 587 588 u8 device_control_reg_update:1; 589 }; 590 591 struct sas_smp_task { 592 struct scatterlist smp_req; 593 struct scatterlist smp_resp; 594 }; 595 596 enum task_attribute { 597 TASK_ATTR_SIMPLE = 0, 598 TASK_ATTR_HOQ = 1, 599 TASK_ATTR_ORDERED= 2, 600 TASK_ATTR_ACA = 4, 601 }; 602 603 struct sas_ssp_task { 604 u8 retry_count; /* hardware retry, should be > 0 */ 605 606 u8 LUN[8]; 607 u8 enable_first_burst:1; 608 enum task_attribute task_attr; 609 u8 task_prio; 610 struct scsi_cmnd *cmd; 611 }; 612 613 struct sas_task { 614 struct domain_device *dev; 615 struct list_head list; 616 617 spinlock_t task_state_lock; 618 unsigned task_state_flags; 619 620 enum sas_protocol task_proto; 621 622 union { 623 struct sas_ata_task ata_task; 624 struct sas_smp_task smp_task; 625 struct sas_ssp_task ssp_task; 626 }; 627 628 struct scatterlist *scatter; 629 int num_scatter; 630 u32 total_xfer_len; 631 u8 data_dir:2; /* Use PCI_DMA_... */ 632 633 struct task_status_struct task_status; 634 void (*task_done)(struct sas_task *); 635 636 void *lldd_task; /* for use by LLDDs */ 637 void *uldd_task; 638 struct sas_task_slow *slow_task; 639 }; 640 641 struct sas_task_slow { 642 /* standard/extra infrastructure for slow path commands (SMP and 643 * internal lldd commands 644 */ 645 struct timer_list timer; 646 struct completion completion; 647 }; 648 649 #define SAS_TASK_STATE_PENDING 1 650 #define SAS_TASK_STATE_DONE 2 651 #define SAS_TASK_STATE_ABORTED 4 652 #define SAS_TASK_NEED_DEV_RESET 8 653 #define SAS_TASK_AT_INITIATOR 16 654 655 extern struct sas_task *sas_alloc_task(gfp_t flags); 656 extern struct sas_task *sas_alloc_slow_task(gfp_t flags); 657 extern void sas_free_task(struct sas_task *task); 658 659 struct sas_domain_function_template { 660 /* The class calls these to notify the LLDD of an event. */ 661 void (*lldd_port_formed)(struct asd_sas_phy *); 662 void (*lldd_port_deformed)(struct asd_sas_phy *); 663 664 /* The class calls these when a device is found or gone. */ 665 int (*lldd_dev_found)(struct domain_device *); 666 void (*lldd_dev_gone)(struct domain_device *); 667 668 int (*lldd_execute_task)(struct sas_task *, int num, 669 gfp_t gfp_flags); 670 671 /* Task Management Functions. Must be called from process context. */ 672 int (*lldd_abort_task)(struct sas_task *); 673 int (*lldd_abort_task_set)(struct domain_device *, u8 *lun); 674 int (*lldd_clear_aca)(struct domain_device *, u8 *lun); 675 int (*lldd_clear_task_set)(struct domain_device *, u8 *lun); 676 int (*lldd_I_T_nexus_reset)(struct domain_device *); 677 int (*lldd_ata_check_ready)(struct domain_device *); 678 void (*lldd_ata_set_dmamode)(struct domain_device *); 679 int (*lldd_lu_reset)(struct domain_device *, u8 *lun); 680 int (*lldd_query_task)(struct sas_task *); 681 682 /* Port and Adapter management */ 683 int (*lldd_clear_nexus_port)(struct asd_sas_port *); 684 int (*lldd_clear_nexus_ha)(struct sas_ha_struct *); 685 686 /* Phy management */ 687 int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *); 688 689 /* GPIO support */ 690 int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type, 691 u8 reg_index, u8 reg_count, u8 *write_data); 692 }; 693 694 extern int sas_register_ha(struct sas_ha_struct *); 695 extern int sas_unregister_ha(struct sas_ha_struct *); 696 extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha); 697 extern void sas_resume_ha(struct sas_ha_struct *sas_ha); 698 extern void sas_suspend_ha(struct sas_ha_struct *sas_ha); 699 700 int sas_set_phy_speed(struct sas_phy *phy, 701 struct sas_phy_linkrates *rates); 702 int sas_phy_reset(struct sas_phy *phy, int hard_reset); 703 int sas_queue_up(struct sas_task *task); 704 extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *); 705 extern int sas_target_alloc(struct scsi_target *); 706 extern int sas_slave_configure(struct scsi_device *); 707 extern int sas_change_queue_depth(struct scsi_device *, int new_depth, 708 int reason); 709 extern int sas_change_queue_type(struct scsi_device *, int qt); 710 extern int sas_bios_param(struct scsi_device *, 711 struct block_device *, 712 sector_t capacity, int *hsc); 713 extern struct scsi_transport_template * 714 sas_domain_attach_transport(struct sas_domain_function_template *); 715 extern void sas_domain_release_transport(struct scsi_transport_template *); 716 717 int sas_discover_root_expander(struct domain_device *); 718 719 void sas_init_ex_attr(void); 720 721 int sas_ex_revalidate_domain(struct domain_device *); 722 723 void sas_unregister_domain_devices(struct asd_sas_port *port, int gone); 724 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *); 725 int sas_discover_event(struct asd_sas_port *, enum discover_event ev); 726 727 int sas_discover_sata(struct domain_device *); 728 int sas_discover_end_dev(struct domain_device *); 729 730 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *); 731 732 void sas_init_dev(struct domain_device *); 733 734 void sas_task_abort(struct sas_task *); 735 int sas_eh_abort_handler(struct scsi_cmnd *cmd); 736 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd); 737 int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd); 738 739 extern void sas_target_destroy(struct scsi_target *); 740 extern int sas_slave_alloc(struct scsi_device *); 741 extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg); 742 extern int sas_drain_work(struct sas_ha_struct *ha); 743 744 extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, 745 struct request *req); 746 747 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task, 748 struct ssp_response_iu *iu); 749 struct sas_phy *sas_get_local_phy(struct domain_device *dev); 750 751 int sas_request_addr(struct Scsi_Host *shost, u8 *addr); 752 753 #endif /* _SASLIB_H_ */ 754