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