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 int pm_result; 176 177 struct ata_port *ap; 178 struct ata_host ata_host; 179 u8 fis[ATA_RESP_FIS_SIZE]; 180 }; 181 182 struct ssp_device { 183 struct list_head eh_list_node; /* pending a user requested eh action */ 184 struct scsi_lun reset_lun; 185 }; 186 187 enum { 188 SAS_DEV_GONE, 189 SAS_DEV_FOUND, /* device notified to lldd */ 190 SAS_DEV_DESTROY, 191 SAS_DEV_EH_PENDING, 192 SAS_DEV_LU_RESET, 193 SAS_DEV_RESET, 194 }; 195 196 struct domain_device { 197 spinlock_t done_lock; 198 enum sas_device_type dev_type; 199 200 enum sas_linkrate linkrate; 201 enum sas_linkrate min_linkrate; 202 enum sas_linkrate max_linkrate; 203 204 int pathways; 205 206 struct domain_device *parent; 207 struct list_head siblings; /* devices on the same level */ 208 struct asd_sas_port *port; /* shortcut to root of the tree */ 209 struct sas_phy *phy; 210 211 struct list_head dev_list_node; 212 struct list_head disco_list_node; /* awaiting probe or destruct */ 213 214 enum sas_protocol iproto; 215 enum sas_protocol tproto; 216 217 struct sas_rphy *rphy; 218 219 u8 sas_addr[SAS_ADDR_SIZE]; 220 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; 221 222 u8 frame_rcvd[32]; 223 224 union { 225 struct expander_device ex_dev; 226 struct sata_device sata_dev; /* STP & directly attached */ 227 struct ssp_device ssp_dev; 228 }; 229 230 void *lldd_dev; 231 unsigned long state; 232 struct kref kref; 233 }; 234 235 struct sas_work { 236 struct list_head drain_node; 237 struct work_struct work; 238 }; 239 240 static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *)) 241 { 242 INIT_WORK(&sw->work, fn); 243 INIT_LIST_HEAD(&sw->drain_node); 244 } 245 246 struct sas_discovery_event { 247 struct sas_work work; 248 struct asd_sas_port *port; 249 }; 250 251 static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work) 252 { 253 struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work); 254 255 return ev; 256 } 257 258 struct sas_discovery { 259 struct sas_discovery_event disc_work[DISC_NUM_EVENTS]; 260 unsigned long pending; 261 u8 fanout_sas_addr[8]; 262 u8 eeds_a[8]; 263 u8 eeds_b[8]; 264 int max_level; 265 }; 266 267 /* The port struct is Class:RW, driver:RO */ 268 struct asd_sas_port { 269 /* private: */ 270 struct completion port_gone_completion; 271 272 struct sas_discovery disc; 273 struct domain_device *port_dev; 274 spinlock_t dev_list_lock; 275 struct list_head dev_list; 276 struct list_head disco_list; 277 struct list_head destroy_list; 278 enum sas_linkrate linkrate; 279 280 struct sas_work work; 281 int suspended; 282 283 /* public: */ 284 int id; 285 286 enum sas_class class; 287 u8 sas_addr[SAS_ADDR_SIZE]; 288 u8 attached_sas_addr[SAS_ADDR_SIZE]; 289 enum sas_protocol iproto; 290 enum sas_protocol tproto; 291 292 enum sas_oob_mode oob_mode; 293 294 spinlock_t phy_list_lock; 295 struct list_head phy_list; 296 int num_phys; 297 u32 phy_mask; 298 299 struct sas_ha_struct *ha; 300 301 struct sas_port *port; 302 303 void *lldd_port; /* not touched by the sas class code */ 304 }; 305 306 struct asd_sas_event { 307 struct sas_work work; 308 struct asd_sas_phy *phy; 309 }; 310 311 static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work) 312 { 313 struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work); 314 315 return ev; 316 } 317 318 /* The phy pretty much is controlled by the LLDD. 319 * The class only reads those fields. 320 */ 321 struct asd_sas_phy { 322 /* private: */ 323 struct asd_sas_event port_events[PORT_NUM_EVENTS]; 324 struct asd_sas_event phy_events[PHY_NUM_EVENTS]; 325 326 unsigned long port_events_pending; 327 unsigned long phy_events_pending; 328 329 int error; 330 int suspended; 331 332 struct sas_phy *phy; 333 334 /* public: */ 335 /* The following are class:RO, driver:R/W */ 336 int enabled; /* must be set */ 337 338 int id; /* must be set */ 339 enum sas_class class; 340 enum sas_protocol iproto; 341 enum sas_protocol tproto; 342 343 enum sas_phy_type type; 344 enum sas_phy_role role; 345 enum sas_oob_mode oob_mode; 346 enum sas_linkrate linkrate; 347 348 u8 *sas_addr; /* must be set */ 349 u8 attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */ 350 351 spinlock_t frame_rcvd_lock; 352 u8 *frame_rcvd; /* must be set */ 353 int frame_rcvd_size; 354 355 spinlock_t sas_prim_lock; 356 u32 sas_prim; 357 358 struct list_head port_phy_el; /* driver:RO */ 359 struct asd_sas_port *port; /* Class:RW, driver: RO */ 360 361 struct sas_ha_struct *ha; /* may be set; the class sets it anyway */ 362 363 void *lldd_phy; /* not touched by the sas_class_code */ 364 }; 365 366 struct scsi_core { 367 struct Scsi_Host *shost; 368 369 struct mutex task_queue_flush; 370 spinlock_t task_queue_lock; 371 struct list_head task_queue; 372 int task_queue_size; 373 374 struct task_struct *queue_thread; 375 }; 376 377 struct sas_ha_event { 378 struct sas_work work; 379 struct sas_ha_struct *ha; 380 }; 381 382 static inline struct sas_ha_event *to_sas_ha_event(struct work_struct *work) 383 { 384 struct sas_ha_event *ev = container_of(work, typeof(*ev), work.work); 385 386 return ev; 387 } 388 389 enum sas_ha_state { 390 SAS_HA_REGISTERED, 391 SAS_HA_DRAINING, 392 SAS_HA_ATA_EH_ACTIVE, 393 SAS_HA_FROZEN, 394 }; 395 396 struct sas_ha_struct { 397 /* private: */ 398 struct sas_ha_event ha_events[HA_NUM_EVENTS]; 399 unsigned long pending; 400 401 struct list_head defer_q; /* work queued while draining */ 402 struct mutex drain_mutex; 403 unsigned long state; 404 spinlock_t lock; 405 int eh_active; 406 wait_queue_head_t eh_wait_q; 407 struct list_head eh_dev_q; 408 409 struct mutex disco_mutex; 410 411 struct scsi_core core; 412 413 /* public: */ 414 char *sas_ha_name; 415 struct device *dev; /* should be set */ 416 struct module *lldd_module; /* should be set */ 417 418 u8 *sas_addr; /* must be set */ 419 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; 420 421 spinlock_t phy_port_lock; 422 struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */ 423 struct asd_sas_port **sas_port; /* array of valid pointers, must be set */ 424 int num_phys; /* must be set, gt 0, static */ 425 426 /* The class calls this to send a task for execution. */ 427 int lldd_max_execute_num; 428 int lldd_queue_size; 429 int strict_wide_ports; /* both sas_addr and attached_sas_addr must match 430 * their siblings when forming wide ports */ 431 432 /* LLDD calls these to notify the class of an event. */ 433 void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event); 434 void (*notify_port_event)(struct asd_sas_phy *, enum port_event); 435 void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event); 436 437 void *lldd_ha; /* not touched by sas class code */ 438 439 struct list_head eh_done_q; /* complete via scsi_eh_flush_done_q */ 440 struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */ 441 }; 442 443 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata) 444 445 static inline struct domain_device * 446 starget_to_domain_dev(struct scsi_target *starget) { 447 return starget->hostdata; 448 } 449 450 static inline struct domain_device * 451 sdev_to_domain_dev(struct scsi_device *sdev) { 452 return starget_to_domain_dev(sdev->sdev_target); 453 } 454 455 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev) 456 { 457 return &dev->sata_dev.ap->link.device[0]; 458 } 459 460 static inline struct domain_device * 461 cmd_to_domain_dev(struct scsi_cmnd *cmd) 462 { 463 return sdev_to_domain_dev(cmd->device); 464 } 465 466 void sas_hash_addr(u8 *hashed, const u8 *sas_addr); 467 468 /* Before calling a notify event, LLDD should use this function 469 * when the link is severed (possibly from its tasklet). 470 * The idea is that the Class only reads those, while the LLDD, 471 * can R/W these (thus avoiding a race). 472 */ 473 static inline void sas_phy_disconnected(struct asd_sas_phy *phy) 474 { 475 phy->oob_mode = OOB_NOT_CONNECTED; 476 phy->linkrate = SAS_LINK_RATE_UNKNOWN; 477 } 478 479 static inline unsigned int to_sas_gpio_od(int device, int bit) 480 { 481 return 3 * device + bit; 482 } 483 484 static inline void sas_put_local_phy(struct sas_phy *phy) 485 { 486 put_device(&phy->dev); 487 } 488 489 #ifdef CONFIG_SCSI_SAS_HOST_SMP 490 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count); 491 #else 492 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count) 493 { 494 return -1; 495 } 496 #endif 497 498 /* ---------- Tasks ---------- */ 499 /* 500 service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED | 501 exec_status | | | 502 ---------------------+---------------------+-----------------------+ 503 SAM_... | X | | 504 DEV_NO_RESPONSE | X | X | 505 INTERRUPTED | X | | 506 QUEUE_FULL | | X | 507 DEVICE_UNKNOWN | | X | 508 SG_ERR | | X | 509 ---------------------+---------------------+-----------------------+ 510 */ 511 512 enum service_response { 513 SAS_TASK_COMPLETE, 514 SAS_TASK_UNDELIVERED = -1, 515 }; 516 517 enum exec_status { 518 /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of 519 * them here to silence 'case value not in enumerated type' warnings 520 */ 521 __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION, 522 523 SAS_DEV_NO_RESPONSE = 0x80, 524 SAS_DATA_UNDERRUN, 525 SAS_DATA_OVERRUN, 526 SAS_INTERRUPTED, 527 SAS_QUEUE_FULL, 528 SAS_DEVICE_UNKNOWN, 529 SAS_SG_ERR, 530 SAS_OPEN_REJECT, 531 SAS_OPEN_TO, 532 SAS_PROTO_RESPONSE, 533 SAS_PHY_DOWN, 534 SAS_NAK_R_ERR, 535 SAS_PENDING, 536 SAS_ABORTED_TASK, 537 }; 538 539 /* When a task finishes with a response, the LLDD examines the 540 * response: 541 * - For an ATA task task_status_struct::stat is set to 542 * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the 543 * contents of struct ata_task_resp. 544 * - For SSP tasks, if no data is present or status/TMF response 545 * is valid, task_status_struct::stat is set. If data is present 546 * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets 547 * task_status_struct::buf_valid_size, and task_status_struct::stat is 548 * set to SAM_CHECK_COND. 549 * 550 * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp 551 * for ATA task. 552 * 553 * "frame_len" is the total frame length, which could be more or less 554 * than actually copied. 555 * 556 * Tasks ending with response, always set the residual field. 557 */ 558 struct ata_task_resp { 559 u16 frame_len; 560 u8 ending_fis[ATA_RESP_FIS_SIZE]; /* dev to host or data-in */ 561 }; 562 563 #define SAS_STATUS_BUF_SIZE 96 564 565 struct task_status_struct { 566 enum service_response resp; 567 enum exec_status stat; 568 int buf_valid_size; 569 570 u8 buf[SAS_STATUS_BUF_SIZE]; 571 572 u32 residual; 573 enum sas_open_rej_reason open_rej_reason; 574 }; 575 576 /* ATA and ATAPI task queuable to a SAS LLDD. 577 */ 578 struct sas_ata_task { 579 struct host_to_dev_fis fis; 580 u8 atapi_packet[16]; /* 0 if not ATAPI task */ 581 582 u8 retry_count; /* hardware retry, should be > 0 */ 583 584 u8 dma_xfer:1; /* PIO:0 or DMA:1 */ 585 u8 use_ncq:1; 586 u8 set_affil_pol:1; 587 u8 stp_affil_pol:1; 588 589 u8 device_control_reg_update:1; 590 }; 591 592 struct sas_smp_task { 593 struct scatterlist smp_req; 594 struct scatterlist smp_resp; 595 }; 596 597 enum task_attribute { 598 TASK_ATTR_SIMPLE = 0, 599 TASK_ATTR_HOQ = 1, 600 TASK_ATTR_ORDERED= 2, 601 TASK_ATTR_ACA = 4, 602 }; 603 604 struct sas_ssp_task { 605 u8 retry_count; /* hardware retry, should be > 0 */ 606 607 u8 LUN[8]; 608 u8 enable_first_burst:1; 609 enum task_attribute task_attr; 610 u8 task_prio; 611 struct scsi_cmnd *cmd; 612 }; 613 614 struct sas_task { 615 struct domain_device *dev; 616 struct list_head list; 617 618 spinlock_t task_state_lock; 619 unsigned task_state_flags; 620 621 enum sas_protocol task_proto; 622 623 union { 624 struct sas_ata_task ata_task; 625 struct sas_smp_task smp_task; 626 struct sas_ssp_task ssp_task; 627 }; 628 629 struct scatterlist *scatter; 630 int num_scatter; 631 u32 total_xfer_len; 632 u8 data_dir:2; /* Use PCI_DMA_... */ 633 634 struct task_status_struct task_status; 635 void (*task_done)(struct sas_task *); 636 637 void *lldd_task; /* for use by LLDDs */ 638 void *uldd_task; 639 struct sas_task_slow *slow_task; 640 }; 641 642 struct sas_task_slow { 643 /* standard/extra infrastructure for slow path commands (SMP and 644 * internal lldd commands 645 */ 646 struct timer_list timer; 647 struct completion completion; 648 }; 649 650 #define SAS_TASK_STATE_PENDING 1 651 #define SAS_TASK_STATE_DONE 2 652 #define SAS_TASK_STATE_ABORTED 4 653 #define SAS_TASK_NEED_DEV_RESET 8 654 #define SAS_TASK_AT_INITIATOR 16 655 656 extern struct sas_task *sas_alloc_task(gfp_t flags); 657 extern struct sas_task *sas_alloc_slow_task(gfp_t flags); 658 extern void sas_free_task(struct sas_task *task); 659 660 struct sas_domain_function_template { 661 /* The class calls these to notify the LLDD of an event. */ 662 void (*lldd_port_formed)(struct asd_sas_phy *); 663 void (*lldd_port_deformed)(struct asd_sas_phy *); 664 665 /* The class calls these when a device is found or gone. */ 666 int (*lldd_dev_found)(struct domain_device *); 667 void (*lldd_dev_gone)(struct domain_device *); 668 669 int (*lldd_execute_task)(struct sas_task *, int num, 670 gfp_t gfp_flags); 671 672 /* Task Management Functions. Must be called from process context. */ 673 int (*lldd_abort_task)(struct sas_task *); 674 int (*lldd_abort_task_set)(struct domain_device *, u8 *lun); 675 int (*lldd_clear_aca)(struct domain_device *, u8 *lun); 676 int (*lldd_clear_task_set)(struct domain_device *, u8 *lun); 677 int (*lldd_I_T_nexus_reset)(struct domain_device *); 678 int (*lldd_ata_check_ready)(struct domain_device *); 679 void (*lldd_ata_set_dmamode)(struct domain_device *); 680 int (*lldd_lu_reset)(struct domain_device *, u8 *lun); 681 int (*lldd_query_task)(struct sas_task *); 682 683 /* Port and Adapter management */ 684 int (*lldd_clear_nexus_port)(struct asd_sas_port *); 685 int (*lldd_clear_nexus_ha)(struct sas_ha_struct *); 686 687 /* Phy management */ 688 int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *); 689 690 /* GPIO support */ 691 int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type, 692 u8 reg_index, u8 reg_count, u8 *write_data); 693 }; 694 695 extern int sas_register_ha(struct sas_ha_struct *); 696 extern int sas_unregister_ha(struct sas_ha_struct *); 697 extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha); 698 extern void sas_resume_ha(struct sas_ha_struct *sas_ha); 699 extern void sas_suspend_ha(struct sas_ha_struct *sas_ha); 700 701 int sas_set_phy_speed(struct sas_phy *phy, 702 struct sas_phy_linkrates *rates); 703 int sas_phy_reset(struct sas_phy *phy, int hard_reset); 704 int sas_queue_up(struct sas_task *task); 705 extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *); 706 extern int sas_target_alloc(struct scsi_target *); 707 extern int sas_slave_configure(struct scsi_device *); 708 extern int sas_change_queue_depth(struct scsi_device *, int new_depth, 709 int reason); 710 extern int sas_change_queue_type(struct scsi_device *, int qt); 711 extern int sas_bios_param(struct scsi_device *, 712 struct block_device *, 713 sector_t capacity, int *hsc); 714 extern struct scsi_transport_template * 715 sas_domain_attach_transport(struct sas_domain_function_template *); 716 extern void sas_domain_release_transport(struct scsi_transport_template *); 717 718 int sas_discover_root_expander(struct domain_device *); 719 720 void sas_init_ex_attr(void); 721 722 int sas_ex_revalidate_domain(struct domain_device *); 723 724 void sas_unregister_domain_devices(struct asd_sas_port *port, int gone); 725 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *); 726 int sas_discover_event(struct asd_sas_port *, enum discover_event ev); 727 728 int sas_discover_sata(struct domain_device *); 729 int sas_discover_end_dev(struct domain_device *); 730 731 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *); 732 733 void sas_init_dev(struct domain_device *); 734 735 void sas_task_abort(struct sas_task *); 736 int sas_eh_abort_handler(struct scsi_cmnd *cmd); 737 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd); 738 int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd); 739 740 extern void sas_target_destroy(struct scsi_target *); 741 extern int sas_slave_alloc(struct scsi_device *); 742 extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg); 743 extern int sas_drain_work(struct sas_ha_struct *ha); 744 745 extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, 746 struct request *req); 747 748 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task, 749 struct ssp_response_iu *iu); 750 struct sas_phy *sas_get_local_phy(struct domain_device *dev); 751 752 int sas_request_addr(struct Scsi_Host *shost, u8 *addr); 753 754 #endif /* _SASLIB_H_ */ 755