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 <[email protected]>
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>
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#include <linux/libata.h>
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#include <linux/list.h>
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#include <scsi/scsi_device.h>
19
#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_transport_sas.h>
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#include <linux/scatterlist.h>
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#include <linux/slab.h>
23

24
struct block_device;
25

26
enum sas_phy_role {
27
	PHY_ROLE_NONE = 0,
28
	PHY_ROLE_TARGET = 0x40,
29
	PHY_ROLE_INITIATOR = 0x80,
30
};
31

32
/* The events are mnemonically described in sas_dump.c
33
 * so when updating/adding events here, please also
34
 * update the other file too.
35
 */
36
enum port_event {
37
	PORTE_BYTES_DMAED     = 0U,
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	PORTE_BROADCAST_RCVD,
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	PORTE_LINK_RESET_ERR,
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	PORTE_TIMER_EVENT,
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	PORTE_HARD_RESET,
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	PORT_NUM_EVENTS,
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};
44

45
enum phy_event {
46
	PHYE_LOSS_OF_SIGNAL   = 0U,
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	PHYE_OOB_DONE,
48
	PHYE_OOB_ERROR,
49
	PHYE_SPINUP_HOLD,             /* hot plug SATA, no COMWAKE sent */
50
	PHYE_RESUME_TIMEOUT,
51
	PHYE_SHUTDOWN,
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	PHY_NUM_EVENTS,
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};
54

55
enum discover_event {
56
	DISCE_DISCOVER_DOMAIN   = 0U,
57
	DISCE_REVALIDATE_DOMAIN,
58
	DISCE_SUSPEND,
59
	DISCE_RESUME,
60
	DISC_NUM_EVENTS,
61
};
62

63
/* ---------- Expander Devices ---------- */
64

65
#define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj)
66
#define to_dev_attr(_attr)  container_of(_attr, struct domain_dev_attribute,\
67
					 attr)
68

69
enum routing_attribute {
70
	DIRECT_ROUTING,
71
	SUBTRACTIVE_ROUTING,
72
	TABLE_ROUTING,
73
};
74

75
enum ex_phy_state {
76
	PHY_EMPTY,
77
	PHY_VACANT,
78
	PHY_NOT_PRESENT,
79
	PHY_DEVICE_DISCOVERED
80
};
81

82
struct ex_phy {
83
	int    phy_id;
84

85
	enum ex_phy_state phy_state;
86

87
	enum sas_device_type attached_dev_type;
88
	enum sas_linkrate linkrate;
89

90
	u8   attached_sata_host:1;
91
	u8   attached_sata_dev:1;
92
	u8   attached_sata_ps:1;
93

94
	enum sas_protocol attached_tproto;
95
	enum sas_protocol attached_iproto;
96

97
	u8   attached_sas_addr[SAS_ADDR_SIZE];
98
	u8   attached_phy_id;
99

100
	int phy_change_count;
101
	enum routing_attribute routing_attr;
102
	u8   virtual:1;
103

104
	int  last_da_index;
105

106
	struct sas_phy *phy;
107
	struct sas_port *port;
108
};
109

110
struct expander_device {
111
	struct list_head children;
112

113
	int    ex_change_count;
114
	u16    max_route_indexes;
115
	u8     num_phys;
116

117
	u8     t2t_supp:1;
118
	u8     configuring:1;
119
	u8     conf_route_table:1;
120

121
	u8     enclosure_logical_id[8];
122

123
	struct ex_phy *ex_phy;
124
	struct sas_port *parent_port;
125

126
	struct mutex cmd_mutex;
127
};
128

129
/* ---------- SATA device ---------- */
130
#define ATA_RESP_FIS_SIZE 24
131

132
struct sata_device {
133
	unsigned int class;
134
	u8     port_no;        /* port number, if this is a PM (Port) */
135

136
	struct ata_port *ap;
137
	struct ata_host *ata_host;
138
	struct smp_rps_resp rps_resp ____cacheline_aligned; /* report_phy_sata_resp */
139
	u8     fis[ATA_RESP_FIS_SIZE];
140
};
141

142
struct ssp_device {
143
	struct list_head eh_list_node; /* pending a user requested eh action */
144
	struct scsi_lun reset_lun;
145
};
146

147
enum {
148
	SAS_DEV_GONE,
149
	SAS_DEV_FOUND, /* device notified to lldd */
150
	SAS_DEV_DESTROY,
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	SAS_DEV_EH_PENDING,
152
	SAS_DEV_LU_RESET,
153
	SAS_DEV_RESET,
154
};
155

156
struct domain_device {
157
	spinlock_t done_lock;
158
	enum sas_device_type dev_type;
159

160
	enum sas_linkrate linkrate;
161
	enum sas_linkrate min_linkrate;
162
	enum sas_linkrate max_linkrate;
163

164
	int  pathways;
165

166
	struct domain_device *parent;
167
	struct list_head siblings; /* devices on the same level */
168
	struct asd_sas_port *port;        /* shortcut to root of the tree */
169
	struct sas_phy *phy;
170

171
	struct list_head dev_list_node;
172
	struct list_head disco_list_node; /* awaiting probe or destruct */
173

174
	enum sas_protocol    iproto;
175
	enum sas_protocol    tproto;
176

177
	struct sas_rphy *rphy;
178

179
	u8  sas_addr[SAS_ADDR_SIZE];
180
	u8  hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
181

182
	u8  frame_rcvd[32];
183

184
	union {
185
		struct expander_device ex_dev;
186
		struct sata_device     sata_dev; /* STP & directly attached */
187
		struct ssp_device      ssp_dev;
188
	};
189

190
	void *lldd_dev;
191
	unsigned long state;
192
	struct kref kref;
193
};
194

195
struct sas_work {
196
	struct list_head drain_node;
197
	struct work_struct work;
198
};
199

200
static inline bool dev_is_expander(enum sas_device_type type)
201
{
202
	return type == SAS_EDGE_EXPANDER_DEVICE ||
203
	       type == SAS_FANOUT_EXPANDER_DEVICE;
204
}
205

206
static inline bool dev_parent_is_expander(struct domain_device *dev)
207
{
208
	if (!dev->parent)
209
		return false;
210

211
	return dev_is_expander(dev->parent->dev_type);
212
}
213

214
static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *))
215
{
216
	INIT_WORK(&sw->work, fn);
217
	INIT_LIST_HEAD(&sw->drain_node);
218
}
219

220
struct sas_discovery_event {
221
	struct sas_work work;
222
	struct asd_sas_port *port;
223
};
224

225
static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work)
226
{
227
	struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work);
228

229
	return ev;
230
}
231

232
struct sas_discovery {
233
	struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
234
	unsigned long    pending;
235
	u8     fanout_sas_addr[SAS_ADDR_SIZE];
236
	u8     eeds_a[SAS_ADDR_SIZE];
237
	u8     eeds_b[SAS_ADDR_SIZE];
238
	int    max_level;
239
};
240

241
/* The port struct is Class:RW, driver:RO */
242
struct asd_sas_port {
243
/* private: */
244
	struct sas_discovery disc;
245
	struct domain_device *port_dev;
246
	spinlock_t dev_list_lock;
247
	struct list_head dev_list;
248
	struct list_head disco_list;
249
	struct list_head destroy_list;
250
	struct list_head sas_port_del_list;
251
	enum   sas_linkrate linkrate;
252

253
	struct sas_work work;
254
	int suspended;
255

256
/* public: */
257
	int id;
258

259
	u8               sas_addr[SAS_ADDR_SIZE];
260
	u8               attached_sas_addr[SAS_ADDR_SIZE];
261
	enum sas_protocol   iproto;
262
	enum sas_protocol   tproto;
263

264
	enum sas_oob_mode oob_mode;
265

266
	spinlock_t       phy_list_lock;
267
	struct list_head phy_list;
268
	int              num_phys;
269
	u32              phy_mask;
270

271
	struct sas_ha_struct *ha;
272

273
	struct sas_port	*port;
274

275
	void *lldd_port;	  /* not touched by the sas class code */
276
};
277

278
struct asd_sas_event {
279
	struct sas_work work;
280
	struct asd_sas_phy *phy;
281
	int event;
282
};
283

284
static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work)
285
{
286
	struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work);
287

288
	return ev;
289
}
290

291
static inline void INIT_SAS_EVENT(struct asd_sas_event *ev,
292
		void (*fn)(struct work_struct *),
293
		struct asd_sas_phy *phy, int event)
294
{
295
	INIT_SAS_WORK(&ev->work, fn);
296
	ev->phy = phy;
297
	ev->event = event;
298
}
299

300
#define SAS_PHY_SHUTDOWN_THRES   1024
301

302
/* The phy pretty much is controlled by the LLDD.
303
 * The class only reads those fields.
304
 */
305
struct asd_sas_phy {
306
/* private: */
307
	atomic_t event_nr;
308
	int in_shutdown;
309
	int error;
310
	int suspended;
311

312
	struct sas_phy *phy;
313

314
/* public: */
315
	/* The following are class:RO, driver:R/W */
316
	int            enabled;	  /* must be set */
317

318
	int            id;	  /* must be set */
319
	enum sas_protocol iproto;
320
	enum sas_protocol tproto;
321

322
	enum sas_phy_role  role;
323
	enum sas_oob_mode  oob_mode;
324
	enum sas_linkrate linkrate;
325

326
	u8   *sas_addr;		  /* must be set */
327
	u8   attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */
328

329
	spinlock_t     frame_rcvd_lock;
330
	u8             *frame_rcvd; /* must be set */
331
	int            frame_rcvd_size;
332

333
	spinlock_t     sas_prim_lock;
334
	u32            sas_prim;
335

336
	struct list_head port_phy_el; /* driver:RO */
337
	struct asd_sas_port      *port; /* Class:RW, driver: RO */
338

339
	struct sas_ha_struct *ha; /* may be set; the class sets it anyway */
340

341
	void *lldd_phy;		  /* not touched by the sas_class_code */
342
};
343

344
enum sas_ha_state {
345
	SAS_HA_REGISTERED,
346
	SAS_HA_DRAINING,
347
	SAS_HA_ATA_EH_ACTIVE,
348
	SAS_HA_FROZEN,
349
	SAS_HA_RESUMING,
350
};
351

352
struct sas_ha_struct {
353
/* private: */
354
	struct list_head  defer_q; /* work queued while draining */
355
	struct mutex	  drain_mutex;
356
	unsigned long	  state;
357
	spinlock_t	  lock;
358
	int		  eh_active;
359
	wait_queue_head_t eh_wait_q;
360
	struct list_head  eh_dev_q;
361

362
	struct mutex disco_mutex;
363

364
	struct Scsi_Host *shost;
365

366
/* public: */
367
	char *sas_ha_name;
368
	struct device *dev;	  /* should be set */
369

370
	struct workqueue_struct *event_q;
371
	struct workqueue_struct *disco_q;
372

373
	u8 *sas_addr;		  /* must be set */
374
	u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
375

376
	spinlock_t      phy_port_lock;
377
	struct asd_sas_phy  **sas_phy; /* array of valid pointers, must be set */
378
	struct asd_sas_port **sas_port; /* array of valid pointers, must be set */
379
	int             num_phys; /* must be set, gt 0, static */
380

381
	int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
382
				* their siblings when forming wide ports */
383

384
	void *lldd_ha;		  /* not touched by sas class code */
385

386
	struct list_head eh_done_q;  /* complete via scsi_eh_flush_done_q */
387
	struct list_head eh_ata_q; /* scmds to promote from sas to ata eh */
388

389
	int event_thres;
390
};
391

392
#define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata)
393

394
static inline struct domain_device *
395
starget_to_domain_dev(struct scsi_target *starget) {
396
	return starget->hostdata;
397
}
398

399
static inline struct domain_device *
400
sdev_to_domain_dev(struct scsi_device *sdev) {
401
	return starget_to_domain_dev(sdev->sdev_target);
402
}
403

404
static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev)
405
{
406
	return &dev->sata_dev.ap->link.device[0];
407
}
408

409
static inline struct domain_device *
410
cmd_to_domain_dev(struct scsi_cmnd *cmd)
411
{
412
	return sdev_to_domain_dev(cmd->device);
413
}
414

415
/* Before calling a notify event, LLDD should use this function
416
 * when the link is severed (possibly from its tasklet).
417
 * The idea is that the Class only reads those, while the LLDD,
418
 * can R/W these (thus avoiding a race).
419
 */
420
static inline void sas_phy_disconnected(struct asd_sas_phy *phy)
421
{
422
	phy->oob_mode = OOB_NOT_CONNECTED;
423
	phy->linkrate = SAS_LINK_RATE_UNKNOWN;
424
}
425

426
static inline unsigned int to_sas_gpio_od(int device, int bit)
427
{
428
	return 3 * device + bit;
429
}
430

431
static inline void sas_put_local_phy(struct sas_phy *phy)
432
{
433
	put_device(&phy->dev);
434
}
435

436
#ifdef CONFIG_SCSI_SAS_HOST_SMP
437
int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count);
438
#else
439
static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count)
440
{
441
	return -1;
442
}
443
#endif
444

445
/* ---------- Tasks ---------- */
446
/*
447
      service_response |  SAS_TASK_COMPLETE  |  SAS_TASK_UNDELIVERED |
448
  exec_status          |                     |                       |
449
  ---------------------+---------------------+-----------------------+
450
       SAM_...         |         X           |                       |
451
       DEV_NO_RESPONSE |         X           |           X           |
452
       INTERRUPTED     |         X           |                       |
453
       QUEUE_FULL      |                     |           X           |
454
       DEVICE_UNKNOWN  |                     |           X           |
455
       SG_ERR          |                     |           X           |
456
  ---------------------+---------------------+-----------------------+
457
 */
458

459
enum service_response {
460
	SAS_TASK_COMPLETE,
461
	SAS_TASK_UNDELIVERED = -1,
462
};
463

464
enum exec_status {
465
	/*
466
	 * Values 0..0x7f are used to return the SAM_STAT_* codes.  To avoid
467
	 * 'case value not in enumerated type' compiler warnings every value
468
	 * returned through the exec_status enum needs an alias with the SAS_
469
	 * prefix here.
470
	 */
471
	SAS_SAM_STAT_GOOD = SAM_STAT_GOOD,
472
	SAS_SAM_STAT_BUSY = SAM_STAT_BUSY,
473
	SAS_SAM_STAT_TASK_ABORTED = SAM_STAT_TASK_ABORTED,
474
	SAS_SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION,
475

476
	SAS_DEV_NO_RESPONSE = 0x80,
477
	SAS_DATA_UNDERRUN,
478
	SAS_DATA_OVERRUN,
479
	SAS_INTERRUPTED,
480
	SAS_QUEUE_FULL,
481
	SAS_DEVICE_UNKNOWN,
482
	SAS_OPEN_REJECT,
483
	SAS_OPEN_TO,
484
	SAS_PROTO_RESPONSE,
485
	SAS_PHY_DOWN,
486
	SAS_NAK_R_ERR,
487
	SAS_PENDING,
488
	SAS_ABORTED_TASK,
489
};
490

491
/* When a task finishes with a response, the LLDD examines the
492
 * response:
493
 *	- For an ATA task task_status_struct::stat is set to
494
 * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the
495
 * contents of struct ata_task_resp.
496
 *	- For SSP tasks, if no data is present or status/TMF response
497
 * is valid, task_status_struct::stat is set.  If data is present
498
 * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets
499
 * task_status_struct::buf_valid_size, and task_status_struct::stat is
500
 * set to SAM_CHECK_COND.
501
 *
502
 * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp
503
 * for ATA task.
504
 *
505
 * "frame_len" is the total frame length, which could be more or less
506
 * than actually copied.
507
 *
508
 * Tasks ending with response, always set the residual field.
509
 */
510
struct ata_task_resp {
511
	u16  frame_len;
512
	u8   ending_fis[ATA_RESP_FIS_SIZE];	  /* dev to host or data-in */
513
};
514

515
#define SAS_STATUS_BUF_SIZE 96
516

517
struct task_status_struct {
518
	enum service_response resp;
519
	enum exec_status      stat;
520
	int  buf_valid_size;
521

522
	u8   buf[SAS_STATUS_BUF_SIZE];
523

524
	u32  residual;
525
	enum sas_open_rej_reason open_rej_reason;
526
};
527

528
/* ATA and ATAPI task queuable to a SAS LLDD.
529
 */
530
struct sas_ata_task {
531
	struct host_to_dev_fis fis;
532
	u8     atapi_packet[16];  /* 0 if not ATAPI task */
533

534
	u8     dma_xfer:1;	  /* PIO:0 or DMA:1 */
535
	u8     use_ncq:1;
536
	u8     return_fis_on_success:1;
537

538
	u8     device_control_reg_update:1;
539

540
	bool   force_phy;
541
	int    force_phy_id;
542
};
543

544
/* LLDDs rely on these values */
545
enum sas_internal_abort {
546
	SAS_INTERNAL_ABORT_SINGLE	= 0,
547
	SAS_INTERNAL_ABORT_DEV		= 1,
548
};
549

550
struct sas_internal_abort_task {
551
	enum sas_internal_abort type;
552
	unsigned int qid;
553
	u16 tag;
554
};
555

556
struct sas_smp_task {
557
	struct scatterlist smp_req;
558
	struct scatterlist smp_resp;
559
};
560

561
enum task_attribute {
562
	TASK_ATTR_SIMPLE = 0,
563
	TASK_ATTR_HOQ    = 1,
564
	TASK_ATTR_ORDERED= 2,
565
	TASK_ATTR_ACA    = 4,
566
};
567

568
struct sas_ssp_task {
569
	u8     LUN[8];
570
	enum   task_attribute task_attr;
571
	struct scsi_cmnd *cmd;
572
};
573

574
struct sas_tmf_task {
575
	u8 tmf;
576
	u16 tag_of_task_to_be_managed;
577
};
578

579
struct sas_task {
580
	struct domain_device *dev;
581

582
	spinlock_t   task_state_lock;
583
	unsigned     task_state_flags;
584

585
	enum   sas_protocol      task_proto;
586

587
	union {
588
		struct sas_ata_task ata_task;
589
		struct sas_smp_task smp_task;
590
		struct sas_ssp_task ssp_task;
591
		struct sas_internal_abort_task abort_task;
592
	};
593

594
	struct scatterlist *scatter;
595
	int    num_scatter;
596
	u32    total_xfer_len;
597
	u8     data_dir:2;	  /* Use PCI_DMA_... */
598

599
	struct task_status_struct task_status;
600
	void   (*task_done)(struct sas_task *);
601

602
	void   *lldd_task;	  /* for use by LLDDs */
603
	void   *uldd_task;
604
	struct sas_task_slow *slow_task;
605
	struct sas_tmf_task *tmf;
606
};
607

608
struct sas_task_slow {
609
	/* standard/extra infrastructure for slow path commands (SMP and
610
	 * internal lldd commands
611
	 */
612
	struct timer_list     timer;
613
	struct completion     completion;
614
	struct sas_task       *task;
615
};
616

617
#define SAS_TASK_STATE_PENDING      1
618
#define SAS_TASK_STATE_DONE         2
619
#define SAS_TASK_STATE_ABORTED      4
620
#define SAS_TASK_NEED_DEV_RESET     8
621

622
static inline bool sas_is_internal_abort(struct sas_task *task)
623
{
624
	return task->task_proto == SAS_PROTOCOL_INTERNAL_ABORT;
625
}
626

627
static inline struct request *sas_task_find_rq(struct sas_task *task)
628
{
629
	struct scsi_cmnd *scmd;
630

631
	if (task->task_proto & SAS_PROTOCOL_STP_ALL) {
632
		struct ata_queued_cmd *qc = task->uldd_task;
633

634
		scmd = qc ? qc->scsicmd : NULL;
635
	} else {
636
		scmd = task->uldd_task;
637
	}
638

639
	if (!scmd)
640
		return NULL;
641

642
	return scsi_cmd_to_rq(scmd);
643
}
644

645
struct sas_domain_function_template {
646
	/* The class calls these to notify the LLDD of an event. */
647
	void (*lldd_port_formed)(struct asd_sas_phy *);
648
	void (*lldd_port_deformed)(struct asd_sas_phy *);
649

650
	/* The class calls these when a device is found or gone. */
651
	int  (*lldd_dev_found)(struct domain_device *);
652
	void (*lldd_dev_gone)(struct domain_device *);
653

654
	int (*lldd_execute_task)(struct sas_task *, gfp_t gfp_flags);
655

656
	/* Task Management Functions. Must be called from process context. */
657
	int (*lldd_abort_task)(struct sas_task *);
658
	int (*lldd_abort_task_set)(struct domain_device *, u8 *lun);
659
	int (*lldd_clear_task_set)(struct domain_device *, u8 *lun);
660
	int (*lldd_I_T_nexus_reset)(struct domain_device *);
661
	int (*lldd_ata_check_ready)(struct domain_device *);
662
	void (*lldd_ata_set_dmamode)(struct domain_device *);
663
	int (*lldd_lu_reset)(struct domain_device *, u8 *lun);
664
	int (*lldd_query_task)(struct sas_task *);
665

666
	/* Special TMF callbacks */
667
	void (*lldd_tmf_exec_complete)(struct domain_device *dev);
668
	void (*lldd_tmf_aborted)(struct sas_task *task);
669
	bool (*lldd_abort_timeout)(struct sas_task *task, void *data);
670

671
	/* Port and Adapter management */
672
	int (*lldd_clear_nexus_port)(struct asd_sas_port *);
673
	int (*lldd_clear_nexus_ha)(struct sas_ha_struct *);
674

675
	/* Phy management */
676
	int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *);
677

678
	/* GPIO support */
679
	int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type,
680
			       u8 reg_index, u8 reg_count, u8 *write_data);
681
};
682

683
extern int sas_register_ha(struct sas_ha_struct *);
684
extern int sas_unregister_ha(struct sas_ha_struct *);
685
extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha);
686
extern void sas_resume_ha(struct sas_ha_struct *sas_ha);
687
extern void sas_resume_ha_no_sync(struct sas_ha_struct *sas_ha);
688
extern void sas_suspend_ha(struct sas_ha_struct *sas_ha);
689

690
int sas_phy_reset(struct sas_phy *phy, int hard_reset);
691
int sas_phy_enable(struct sas_phy *phy, int enable);
692
extern int sas_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
693
extern int sas_target_alloc(struct scsi_target *);
694
int sas_sdev_configure(struct scsi_device *dev, struct queue_limits *lim);
695
extern int sas_change_queue_depth(struct scsi_device *, int new_depth);
696
extern int sas_bios_param(struct scsi_device *, struct gendisk *,
697
			  sector_t capacity, int *hsc);
698
int sas_execute_internal_abort_single(struct domain_device *device,
699
				      u16 tag, unsigned int qid,
700
				      void *data);
701
int sas_execute_internal_abort_dev(struct domain_device *device,
702
				   unsigned int qid, void *data);
703
extern struct scsi_transport_template *
704
sas_domain_attach_transport(struct sas_domain_function_template *);
705
extern struct device_attribute dev_attr_phy_event_threshold;
706

707
void sas_task_abort(struct sas_task *);
708
int sas_eh_abort_handler(struct scsi_cmnd *cmd);
709
int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
710
int sas_eh_target_reset_handler(struct scsi_cmnd *cmd);
711

712
extern void sas_target_destroy(struct scsi_target *);
713
extern int sas_sdev_init(struct scsi_device *);
714
extern int sas_ioctl(struct scsi_device *sdev, unsigned int cmd,
715
		     void __user *arg);
716
extern int sas_drain_work(struct sas_ha_struct *ha);
717

718
extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
719
				  struct ssp_response_iu *iu);
720
struct sas_phy *sas_get_local_phy(struct domain_device *dev);
721

722
int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
723

724
int sas_abort_task_set(struct domain_device *dev, u8 *lun);
725
int sas_clear_task_set(struct domain_device *dev, u8 *lun);
726
int sas_lu_reset(struct domain_device *dev, u8 *lun);
727
int sas_query_task(struct sas_task *task, u16 tag);
728
int sas_abort_task(struct sas_task *task, u16 tag);
729
int sas_find_attached_phy_id(struct expander_device *ex_dev,
730
			     struct domain_device *dev);
731

732
void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event,
733
			   gfp_t gfp_flags);
734
void sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event,
735
			   gfp_t gfp_flags);
736

737
#define __LIBSAS_SHT_BASE						\
738
	.module				= THIS_MODULE,			\
739
	.name				= DRV_NAME,			\
740
	.proc_name			= DRV_NAME,			\
741
	.queuecommand			= sas_queuecommand,		\
742
	.dma_need_drain			= ata_scsi_dma_need_drain,	\
743
	.target_alloc			= sas_target_alloc,		\
744
	.change_queue_depth		= sas_change_queue_depth,	\
745
	.bios_param			= sas_bios_param,		\
746
	.this_id			= -1,				\
747
	.eh_device_reset_handler	= sas_eh_device_reset_handler,	\
748
	.eh_target_reset_handler	= sas_eh_target_reset_handler,	\
749
	.target_destroy			= sas_target_destroy,		\
750
	.ioctl				= sas_ioctl,			\
751

752
#ifdef CONFIG_COMPAT
753
#define _LIBSAS_SHT_BASE		__LIBSAS_SHT_BASE		\
754
	.compat_ioctl			= sas_ioctl,
755
#else
756
#define _LIBSAS_SHT_BASE		__LIBSAS_SHT_BASE
757
#endif
758

759
#define LIBSAS_SHT_BASE			_LIBSAS_SHT_BASE		\
760
	.sdev_configure			= sas_sdev_configure,		\
761
	.sdev_init			= sas_sdev_init,		\
762

763
#define LIBSAS_SHT_BASE_NO_SLAVE_INIT	_LIBSAS_SHT_BASE
764

765

766
#endif /* _SASLIB_H_ */
767

768