1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * SAS host prototypes and structures header file
4 *
5 * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
6 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
7 */
8
9 #ifndef _LIBSAS_H_
10 #define _LIBSAS_H_
11
12
13 #include <linux/timer.h>
14 #include <linux/pci.h>
15 #include <scsi/sas.h>
16 #include <linux/libata.h>
17 #include <linux/list.h>
18 #include <scsi/scsi_device.h>
19 #include <scsi/scsi_cmnd.h>
20 #include <scsi/scsi_transport_sas.h>
21 #include <linux/scatterlist.h>
22 #include <linux/slab.h>
23
24 struct block_device;
25
26 enum sas_class {
27 SAS,
28 EXPANDER
29 };
30
31 enum sas_phy_role {
32 PHY_ROLE_NONE = 0,
33 PHY_ROLE_TARGET = 0x40,
34 PHY_ROLE_INITIATOR = 0x80,
35 };
36
37 enum sas_phy_type {
38 PHY_TYPE_PHYSICAL,
39 PHY_TYPE_VIRTUAL
40 };
41
42 /* The events are mnemonically described in sas_dump.c
43 * so when updating/adding events here, please also
44 * update the other file too.
45 */
46 enum port_event {
47 PORTE_BYTES_DMAED = 0U,
48 PORTE_BROADCAST_RCVD,
49 PORTE_LINK_RESET_ERR,
50 PORTE_TIMER_EVENT,
51 PORTE_HARD_RESET,
52 PORT_NUM_EVENTS,
53 };
54
55 enum phy_event {
56 PHYE_LOSS_OF_SIGNAL = 0U,
57 PHYE_OOB_DONE,
58 PHYE_OOB_ERROR,
59 PHYE_SPINUP_HOLD, /* hot plug SATA, no COMWAKE sent */
60 PHYE_RESUME_TIMEOUT,
61 PHYE_SHUTDOWN,
62 PHY_NUM_EVENTS,
63 };
64
65 enum discover_event {
66 DISCE_DISCOVER_DOMAIN = 0U,
67 DISCE_REVALIDATE_DOMAIN,
68 DISCE_SUSPEND,
69 DISCE_RESUME,
70 DISC_NUM_EVENTS,
71 };
72
73 /* ---------- Expander Devices ---------- */
74
75 #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj)
76 #define to_dev_attr(_attr) container_of(_attr, struct domain_dev_attribute,\
77 attr)
78
79 enum routing_attribute {
80 DIRECT_ROUTING,
81 SUBTRACTIVE_ROUTING,
82 TABLE_ROUTING,
83 };
84
85 enum ex_phy_state {
86 PHY_EMPTY,
87 PHY_VACANT,
88 PHY_NOT_PRESENT,
89 PHY_DEVICE_DISCOVERED
90 };
91
92 struct ex_phy {
93 int phy_id;
94
95 enum ex_phy_state phy_state;
96
97 enum sas_device_type attached_dev_type;
98 enum sas_linkrate linkrate;
99
100 u8 attached_sata_host:1;
101 u8 attached_sata_dev:1;
102 u8 attached_sata_ps:1;
103
104 enum sas_protocol attached_tproto;
105 enum sas_protocol attached_iproto;
106
107 u8 attached_sas_addr[SAS_ADDR_SIZE];
108 u8 attached_phy_id;
109
110 int phy_change_count;
111 enum routing_attribute routing_attr;
112 u8 virtual:1;
113
114 int last_da_index;
115
116 struct sas_phy *phy;
117 struct sas_port *port;
118 };
119
120 struct expander_device {
121 struct list_head children;
122
123 int ex_change_count;
124 u16 max_route_indexes;
125 u8 num_phys;
126
127 u8 t2t_supp:1;
128 u8 configuring:1;
129 u8 conf_route_table:1;
130
131 u8 enclosure_logical_id[8];
132
133 struct ex_phy *ex_phy;
134 struct sas_port *parent_port;
135
136 struct mutex cmd_mutex;
137 };
138
139 /* ---------- SATA device ---------- */
140 #define ATA_RESP_FIS_SIZE 24
141
142 struct sata_device {
143 unsigned int class;
144 u8 port_no; /* port number, if this is a PM (Port) */
145
146 struct ata_port *ap;
147 struct ata_host *ata_host;
148 struct smp_rps_resp rps_resp ____cacheline_aligned; /* report_phy_sata_resp */
149 u8 fis[ATA_RESP_FIS_SIZE];
150 };
151
152 struct ssp_device {
153 struct list_head eh_list_node; /* pending a user requested eh action */
154 struct scsi_lun reset_lun;
155 };
156
157 enum {
158 SAS_DEV_GONE,
159 SAS_DEV_FOUND, /* device notified to lldd */
160 SAS_DEV_DESTROY,
161 SAS_DEV_EH_PENDING,
162 SAS_DEV_LU_RESET,
163 SAS_DEV_RESET,
164 };
165
166 struct domain_device {
167 spinlock_t done_lock;
168 enum sas_device_type dev_type;
169
170 enum sas_linkrate linkrate;
171 enum sas_linkrate min_linkrate;
172 enum sas_linkrate max_linkrate;
173
174 int pathways;
175
176 struct domain_device *parent;
177 struct list_head siblings; /* devices on the same level */
178 struct asd_sas_port *port; /* shortcut to root of the tree */
179 struct sas_phy *phy;
180
181 struct list_head dev_list_node;
182 struct list_head disco_list_node; /* awaiting probe or destruct */
183
184 enum sas_protocol iproto;
185 enum sas_protocol tproto;
186
187 struct sas_rphy *rphy;
188
189 u8 sas_addr[SAS_ADDR_SIZE];
190 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
191
192 u8 frame_rcvd[32];
193
194 union {
195 struct expander_device ex_dev;
196 struct sata_device sata_dev; /* STP & directly attached */
197 struct ssp_device ssp_dev;
198 };
199
200 void *lldd_dev;
201 unsigned long state;
202 struct kref kref;
203 };
204
205 struct sas_work {
206 struct list_head drain_node;
207 struct work_struct work;
208 };
209
dev_is_expander(enum sas_device_type type)210 static inline bool dev_is_expander(enum sas_device_type type)
211 {
212 return type == SAS_EDGE_EXPANDER_DEVICE ||
213 type == SAS_FANOUT_EXPANDER_DEVICE;
214 }
215
INIT_SAS_WORK(struct sas_work * sw,void (* fn)(struct work_struct *))216 static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *))
217 {
218 INIT_WORK(&sw->work, fn);
219 INIT_LIST_HEAD(&sw->drain_node);
220 }
221
222 struct sas_discovery_event {
223 struct sas_work work;
224 struct asd_sas_port *port;
225 };
226
to_sas_discovery_event(struct work_struct * work)227 static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work)
228 {
229 struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work);
230
231 return ev;
232 }
233
234 struct sas_discovery {
235 struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
236 unsigned long pending;
237 u8 fanout_sas_addr[SAS_ADDR_SIZE];
238 u8 eeds_a[SAS_ADDR_SIZE];
239 u8 eeds_b[SAS_ADDR_SIZE];
240 int max_level;
241 };
242
243 /* The port struct is Class:RW, driver:RO */
244 struct asd_sas_port {
245 /* private: */
246 struct sas_discovery disc;
247 struct domain_device *port_dev;
248 spinlock_t dev_list_lock;
249 struct list_head dev_list;
250 struct list_head disco_list;
251 struct list_head destroy_list;
252 struct list_head sas_port_del_list;
253 enum sas_linkrate linkrate;
254
255 struct sas_work work;
256 int suspended;
257
258 /* public: */
259 int id;
260
261 enum sas_class class;
262 u8 sas_addr[SAS_ADDR_SIZE];
263 u8 attached_sas_addr[SAS_ADDR_SIZE];
264 enum sas_protocol iproto;
265 enum sas_protocol tproto;
266
267 enum sas_oob_mode oob_mode;
268
269 spinlock_t phy_list_lock;
270 struct list_head phy_list;
271 int num_phys;
272 u32 phy_mask;
273
274 struct sas_ha_struct *ha;
275
276 struct sas_port *port;
277
278 void *lldd_port; /* not touched by the sas class code */
279 };
280
281 struct asd_sas_event {
282 struct sas_work work;
283 struct asd_sas_phy *phy;
284 int event;
285 };
286
to_asd_sas_event(struct work_struct * work)287 static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work)
288 {
289 struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work);
290
291 return ev;
292 }
293
INIT_SAS_EVENT(struct asd_sas_event * ev,void (* fn)(struct work_struct *),struct asd_sas_phy * phy,int event)294 static inline void INIT_SAS_EVENT(struct asd_sas_event *ev,
295 void (*fn)(struct work_struct *),
296 struct asd_sas_phy *phy, int event)
297 {
298 INIT_SAS_WORK(&ev->work, fn);
299 ev->phy = phy;
300 ev->event = event;
301 }
302
303 #define SAS_PHY_SHUTDOWN_THRES 1024
304
305 /* The phy pretty much is controlled by the LLDD.
306 * The class only reads those fields.
307 */
308 struct asd_sas_phy {
309 /* private: */
310 atomic_t event_nr;
311 int in_shutdown;
312 int error;
313 int suspended;
314
315 struct sas_phy *phy;
316
317 /* public: */
318 /* The following are class:RO, driver:R/W */
319 int enabled; /* must be set */
320
321 int id; /* must be set */
322 enum sas_class class;
323 enum sas_protocol iproto;
324 enum sas_protocol tproto;
325
326 enum sas_phy_type type;
327 enum sas_phy_role role;
328 enum sas_oob_mode oob_mode;
329 enum sas_linkrate linkrate;
330
331 u8 *sas_addr; /* must be set */
332 u8 attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */
333
334 spinlock_t frame_rcvd_lock;
335 u8 *frame_rcvd; /* must be set */
336 int frame_rcvd_size;
337
338 spinlock_t sas_prim_lock;
339 u32 sas_prim;
340
341 struct list_head port_phy_el; /* driver:RO */
342 struct asd_sas_port *port; /* Class:RW, driver: RO */
343
344 struct sas_ha_struct *ha; /* may be set; the class sets it anyway */
345
346 void *lldd_phy; /* not touched by the sas_class_code */
347 };
348
349 struct scsi_core {
350 struct Scsi_Host *shost;
351
352 };
353
354 enum sas_ha_state {
355 SAS_HA_REGISTERED,
356 SAS_HA_DRAINING,
357 SAS_HA_ATA_EH_ACTIVE,
358 SAS_HA_FROZEN,
359 SAS_HA_RESUMING,
360 };
361
362 struct sas_ha_struct {
363 /* private: */
364 struct list_head defer_q; /* work queued while draining */
365 struct mutex drain_mutex;
366 unsigned long state;
367 spinlock_t lock;
368 int eh_active;
369 wait_queue_head_t eh_wait_q;
370 struct list_head eh_dev_q;
371
372 struct mutex disco_mutex;
373
374 struct scsi_core core;
375
376 /* public: */
377 char *sas_ha_name;
378 struct device *dev; /* should be set */
379 struct module *lldd_module; /* should be set */
380
381 struct workqueue_struct *event_q;
382 struct workqueue_struct *disco_q;
383
384 u8 *sas_addr; /* must be set */
385 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
386
387 spinlock_t phy_port_lock;
388 struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */
389 struct asd_sas_port **sas_port; /* array of valid pointers, must be set */
390 int num_phys; /* must be set, gt 0, static */
391
392 int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
393 * their siblings when forming wide ports */
394
395 void *lldd_ha; /* not touched by sas class code */
396
397 struct list_head eh_done_q; /* complete via scsi_eh_flush_done_q */
398 struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */
399
400 int event_thres;
401 };
402
403 #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata)
404
405 static inline struct domain_device *
starget_to_domain_dev(struct scsi_target * starget)406 starget_to_domain_dev(struct scsi_target *starget) {
407 return starget->hostdata;
408 }
409
410 static inline struct domain_device *
sdev_to_domain_dev(struct scsi_device * sdev)411 sdev_to_domain_dev(struct scsi_device *sdev) {
412 return starget_to_domain_dev(sdev->sdev_target);
413 }
414
sas_to_ata_dev(struct domain_device * dev)415 static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev)
416 {
417 return &dev->sata_dev.ap->link.device[0];
418 }
419
420 static inline struct domain_device *
cmd_to_domain_dev(struct scsi_cmnd * cmd)421 cmd_to_domain_dev(struct scsi_cmnd *cmd)
422 {
423 return sdev_to_domain_dev(cmd->device);
424 }
425
426 void sas_hash_addr(u8 *hashed, const u8 *sas_addr);
427
428 /* Before calling a notify event, LLDD should use this function
429 * when the link is severed (possibly from its tasklet).
430 * The idea is that the Class only reads those, while the LLDD,
431 * can R/W these (thus avoiding a race).
432 */
sas_phy_disconnected(struct asd_sas_phy * phy)433 static inline void sas_phy_disconnected(struct asd_sas_phy *phy)
434 {
435 phy->oob_mode = OOB_NOT_CONNECTED;
436 phy->linkrate = SAS_LINK_RATE_UNKNOWN;
437 }
438
to_sas_gpio_od(int device,int bit)439 static inline unsigned int to_sas_gpio_od(int device, int bit)
440 {
441 return 3 * device + bit;
442 }
443
sas_put_local_phy(struct sas_phy * phy)444 static inline void sas_put_local_phy(struct sas_phy *phy)
445 {
446 put_device(&phy->dev);
447 }
448
449 #ifdef CONFIG_SCSI_SAS_HOST_SMP
450 int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count);
451 #else
try_test_sas_gpio_gp_bit(unsigned int od,u8 * data,u8 index,u8 count)452 static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count)
453 {
454 return -1;
455 }
456 #endif
457
458 /* ---------- Tasks ---------- */
459 /*
460 service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED |
461 exec_status | | |
462 ---------------------+---------------------+-----------------------+
463 SAM_... | X | |
464 DEV_NO_RESPONSE | X | X |
465 INTERRUPTED | X | |
466 QUEUE_FULL | | X |
467 DEVICE_UNKNOWN | | X |
468 SG_ERR | | X |
469 ---------------------+---------------------+-----------------------+
470 */
471
472 enum service_response {
473 SAS_TASK_COMPLETE,
474 SAS_TASK_UNDELIVERED = -1,
475 };
476
477 enum exec_status {
478 /*
479 * Values 0..0x7f are used to return the SAM_STAT_* codes. To avoid
480 * 'case value not in enumerated type' compiler warnings every value
481 * returned through the exec_status enum needs an alias with the SAS_
482 * prefix here.
483 */
484 SAS_SAM_STAT_GOOD = SAM_STAT_GOOD,
485 SAS_SAM_STAT_BUSY = SAM_STAT_BUSY,
486 SAS_SAM_STAT_TASK_ABORTED = SAM_STAT_TASK_ABORTED,
487 SAS_SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION,
488
489 SAS_DEV_NO_RESPONSE = 0x80,
490 SAS_DATA_UNDERRUN,
491 SAS_DATA_OVERRUN,
492 SAS_INTERRUPTED,
493 SAS_QUEUE_FULL,
494 SAS_DEVICE_UNKNOWN,
495 SAS_OPEN_REJECT,
496 SAS_OPEN_TO,
497 SAS_PROTO_RESPONSE,
498 SAS_PHY_DOWN,
499 SAS_NAK_R_ERR,
500 SAS_PENDING,
501 SAS_ABORTED_TASK,
502 };
503
504 /* When a task finishes with a response, the LLDD examines the
505 * response:
506 * - For an ATA task task_status_struct::stat is set to
507 * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the
508 * contents of struct ata_task_resp.
509 * - For SSP tasks, if no data is present or status/TMF response
510 * is valid, task_status_struct::stat is set. If data is present
511 * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets
512 * task_status_struct::buf_valid_size, and task_status_struct::stat is
513 * set to SAM_CHECK_COND.
514 *
515 * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp
516 * for ATA task.
517 *
518 * "frame_len" is the total frame length, which could be more or less
519 * than actually copied.
520 *
521 * Tasks ending with response, always set the residual field.
522 */
523 struct ata_task_resp {
524 u16 frame_len;
525 u8 ending_fis[ATA_RESP_FIS_SIZE]; /* dev to host or data-in */
526 };
527
528 #define SAS_STATUS_BUF_SIZE 96
529
530 struct task_status_struct {
531 enum service_response resp;
532 enum exec_status stat;
533 int buf_valid_size;
534
535 u8 buf[SAS_STATUS_BUF_SIZE];
536
537 u32 residual;
538 enum sas_open_rej_reason open_rej_reason;
539 };
540
541 /* ATA and ATAPI task queuable to a SAS LLDD.
542 */
543 struct sas_ata_task {
544 struct host_to_dev_fis fis;
545 u8 atapi_packet[16]; /* 0 if not ATAPI task */
546
547 u8 retry_count; /* hardware retry, should be > 0 */
548
549 u8 dma_xfer:1; /* PIO:0 or DMA:1 */
550 u8 use_ncq:1;
551 u8 set_affil_pol:1;
552 u8 stp_affil_pol:1;
553
554 u8 device_control_reg_update:1;
555
556 bool force_phy;
557 int force_phy_id;
558 };
559
560 /* LLDDs rely on these values */
561 enum sas_internal_abort {
562 SAS_INTERNAL_ABORT_SINGLE = 0,
563 SAS_INTERNAL_ABORT_DEV = 1,
564 };
565
566 struct sas_internal_abort_task {
567 enum sas_internal_abort type;
568 unsigned int qid;
569 u16 tag;
570 };
571
572 struct sas_smp_task {
573 struct scatterlist smp_req;
574 struct scatterlist smp_resp;
575 };
576
577 enum task_attribute {
578 TASK_ATTR_SIMPLE = 0,
579 TASK_ATTR_HOQ = 1,
580 TASK_ATTR_ORDERED= 2,
581 TASK_ATTR_ACA = 4,
582 };
583
584 struct sas_ssp_task {
585 u8 retry_count; /* hardware retry, should be > 0 */
586
587 u8 LUN[8];
588 u8 enable_first_burst:1;
589 enum task_attribute task_attr;
590 u8 task_prio;
591 struct scsi_cmnd *cmd;
592 };
593
594 struct sas_tmf_task {
595 u8 tmf;
596 u16 tag_of_task_to_be_managed;
597 };
598
599 struct sas_task {
600 struct domain_device *dev;
601
602 spinlock_t task_state_lock;
603 unsigned task_state_flags;
604
605 enum sas_protocol task_proto;
606
607 union {
608 struct sas_ata_task ata_task;
609 struct sas_smp_task smp_task;
610 struct sas_ssp_task ssp_task;
611 struct sas_internal_abort_task abort_task;
612 };
613
614 struct scatterlist *scatter;
615 int num_scatter;
616 u32 total_xfer_len;
617 u8 data_dir:2; /* Use PCI_DMA_... */
618
619 struct task_status_struct task_status;
620 void (*task_done)(struct sas_task *);
621
622 void *lldd_task; /* for use by LLDDs */
623 void *uldd_task;
624 struct sas_task_slow *slow_task;
625 struct sas_tmf_task *tmf;
626 };
627
628 struct sas_task_slow {
629 /* standard/extra infrastructure for slow path commands (SMP and
630 * internal lldd commands
631 */
632 struct timer_list timer;
633 struct completion completion;
634 struct sas_task *task;
635 };
636
637 #define SAS_TASK_STATE_PENDING 1
638 #define SAS_TASK_STATE_DONE 2
639 #define SAS_TASK_STATE_ABORTED 4
640 #define SAS_TASK_NEED_DEV_RESET 8
641
sas_is_internal_abort(struct sas_task * task)642 static inline bool sas_is_internal_abort(struct sas_task *task)
643 {
644 return task->task_proto == SAS_PROTOCOL_INTERNAL_ABORT;
645 }
646
sas_task_find_rq(struct sas_task * task)647 static inline struct request *sas_task_find_rq(struct sas_task *task)
648 {
649 struct scsi_cmnd *scmd;
650
651 if (task->task_proto & SAS_PROTOCOL_STP_ALL) {
652 struct ata_queued_cmd *qc = task->uldd_task;
653
654 scmd = qc ? qc->scsicmd : NULL;
655 } else {
656 scmd = task->uldd_task;
657 }
658
659 if (!scmd)
660 return NULL;
661
662 return scsi_cmd_to_rq(scmd);
663 }
664
665 struct sas_domain_function_template {
666 /* The class calls these to notify the LLDD of an event. */
667 void (*lldd_port_formed)(struct asd_sas_phy *);
668 void (*lldd_port_deformed)(struct asd_sas_phy *);
669
670 /* The class calls these when a device is found or gone. */
671 int (*lldd_dev_found)(struct domain_device *);
672 void (*lldd_dev_gone)(struct domain_device *);
673
674 int (*lldd_execute_task)(struct sas_task *, gfp_t gfp_flags);
675
676 /* Task Management Functions. Must be called from process context. */
677 int (*lldd_abort_task)(struct sas_task *);
678 int (*lldd_abort_task_set)(struct domain_device *, u8 *lun);
679 int (*lldd_clear_task_set)(struct domain_device *, u8 *lun);
680 int (*lldd_I_T_nexus_reset)(struct domain_device *);
681 int (*lldd_ata_check_ready)(struct domain_device *);
682 void (*lldd_ata_set_dmamode)(struct domain_device *);
683 int (*lldd_lu_reset)(struct domain_device *, u8 *lun);
684 int (*lldd_query_task)(struct sas_task *);
685
686 /* Special TMF callbacks */
687 void (*lldd_tmf_exec_complete)(struct domain_device *dev);
688 void (*lldd_tmf_aborted)(struct sas_task *task);
689 bool (*lldd_abort_timeout)(struct sas_task *task, void *data);
690
691 /* Port and Adapter management */
692 int (*lldd_clear_nexus_port)(struct asd_sas_port *);
693 int (*lldd_clear_nexus_ha)(struct sas_ha_struct *);
694
695 /* Phy management */
696 int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *);
697
698 /* GPIO support */
699 int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type,
700 u8 reg_index, u8 reg_count, u8 *write_data);
701 };
702
703 extern int sas_register_ha(struct sas_ha_struct *);
704 extern int sas_unregister_ha(struct sas_ha_struct *);
705 extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha);
706 extern void sas_resume_ha(struct sas_ha_struct *sas_ha);
707 extern void sas_resume_ha_no_sync(struct sas_ha_struct *sas_ha);
708 extern void sas_suspend_ha(struct sas_ha_struct *sas_ha);
709
710 int sas_set_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates);
711 int sas_phy_reset(struct sas_phy *phy, int hard_reset);
712 int sas_phy_enable(struct sas_phy *phy, int enable);
713 extern int sas_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
714 extern int sas_target_alloc(struct scsi_target *);
715 extern int sas_slave_configure(struct scsi_device *);
716 extern int sas_change_queue_depth(struct scsi_device *, int new_depth);
717 extern int sas_bios_param(struct scsi_device *, struct block_device *,
718 sector_t capacity, int *hsc);
719 int sas_execute_internal_abort_single(struct domain_device *device,
720 u16 tag, unsigned int qid,
721 void *data);
722 int sas_execute_internal_abort_dev(struct domain_device *device,
723 unsigned int qid, void *data);
724 extern struct scsi_transport_template *
725 sas_domain_attach_transport(struct sas_domain_function_template *);
726 extern struct device_attribute dev_attr_phy_event_threshold;
727
728 int sas_discover_root_expander(struct domain_device *);
729
730 void sas_init_ex_attr(void);
731
732 int sas_ex_revalidate_domain(struct domain_device *);
733
734 void sas_unregister_domain_devices(struct asd_sas_port *port, int gone);
735 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *);
736 void sas_discover_event(struct asd_sas_port *, enum discover_event ev);
737
738 int sas_discover_end_dev(struct domain_device *);
739
740 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *);
741
742 void sas_init_dev(struct domain_device *);
743
744 void sas_task_abort(struct sas_task *);
745 int sas_eh_abort_handler(struct scsi_cmnd *cmd);
746 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
747 int sas_eh_target_reset_handler(struct scsi_cmnd *cmd);
748
749 extern void sas_target_destroy(struct scsi_target *);
750 extern int sas_slave_alloc(struct scsi_device *);
751 extern int sas_ioctl(struct scsi_device *sdev, unsigned int cmd,
752 void __user *arg);
753 extern int sas_drain_work(struct sas_ha_struct *ha);
754
755 extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
756 struct ssp_response_iu *iu);
757 struct sas_phy *sas_get_local_phy(struct domain_device *dev);
758
759 int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
760
761 int sas_abort_task_set(struct domain_device *dev, u8 *lun);
762 int sas_clear_task_set(struct domain_device *dev, u8 *lun);
763 int sas_lu_reset(struct domain_device *dev, u8 *lun);
764 int sas_query_task(struct sas_task *task, u16 tag);
765 int sas_abort_task(struct sas_task *task, u16 tag);
766 int sas_find_attached_phy_id(struct expander_device *ex_dev,
767 struct domain_device *dev);
768
769 void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
770 gfp_t gfp_flags);
771 void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
772 gfp_t gfp_flags);
773
774 #endif /* _SASLIB_H_ */
775