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