blob: 6a308d42d98f4ea4402203f9e6e216ce21b2821b [file] [log] [blame]
James Bottomley2908d772006-08-29 09:22:51 -05001/*
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>
Darrick J. Wongfa1c1e82006-08-10 19:19:47 -070033#include <linux/libata.h>
James Bottomley2908d772006-08-29 09:22:51 -050034#include <linux/list.h>
James Bottomley2908d772006-08-29 09:22:51 -050035#include <scsi/scsi_device.h>
36#include <scsi/scsi_cmnd.h>
37#include <scsi/scsi_transport_sas.h>
Adrian Bunk87ae9af2007-10-30 10:35:04 +010038#include <linux/scatterlist.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090039#include <linux/slab.h>
James Bottomley2908d772006-08-29 09:22:51 -050040
41struct block_device;
42
43enum sas_class {
44 SAS,
45 EXPANDER
46};
47
48enum sas_phy_role {
49 PHY_ROLE_NONE = 0,
50 PHY_ROLE_TARGET = 0x40,
51 PHY_ROLE_INITIATOR = 0x80,
52};
53
54enum 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 */
63enum ha_event {
64 HAE_RESET = 0U,
65 HA_NUM_EVENTS = 1,
66};
67
68enum 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
77enum 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
85enum discover_event {
86 DISCE_DISCOVER_DOMAIN = 0U,
87 DISCE_REVALIDATE_DOMAIN = 1,
88 DISCE_PORT_GONE = 2,
89 DISC_NUM_EVENTS = 3,
90};
91
92/* ---------- Expander Devices ---------- */
93
James Bottomley2908d772006-08-29 09:22:51 -050094#define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj)
95#define to_dev_attr(_attr) container_of(_attr, struct domain_dev_attribute,\
96 attr)
97
98enum routing_attribute {
99 DIRECT_ROUTING,
100 SUBTRACTIVE_ROUTING,
101 TABLE_ROUTING,
102};
103
104enum ex_phy_state {
105 PHY_EMPTY,
106 PHY_VACANT,
107 PHY_NOT_PRESENT,
108 PHY_DEVICE_DISCOVERED
109};
110
111struct ex_phy {
112 int phy_id;
113
114 enum ex_phy_state phy_state;
115
116 enum sas_dev_type attached_dev_type;
James Bottomley88edf742006-09-06 17:36:13 -0500117 enum sas_linkrate linkrate;
James Bottomley2908d772006-08-29 09:22:51 -0500118
119 u8 attached_sata_host:1;
120 u8 attached_sata_dev:1;
121 u8 attached_sata_ps:1;
122
Darrick J. Wong5929faf2007-11-05 11:51:17 -0800123 enum sas_protocol attached_tproto;
124 enum sas_protocol attached_iproto;
James Bottomley2908d772006-08-29 09:22:51 -0500125
126 u8 attached_sas_addr[SAS_ADDR_SIZE];
127 u8 attached_phy_id;
128
129 u8 phy_change_count;
130 enum routing_attribute routing_attr;
131 u8 virtual:1;
132
133 int last_da_index;
134
135 struct sas_phy *phy;
136 struct sas_port *port;
137};
138
139struct expander_device {
140 struct list_head children;
141
142 u16 ex_change_count;
143 u16 max_route_indexes;
144 u8 num_phys;
Luben Tuikovffaac8f2011-09-22 09:41:36 -0700145
146 u8 t2t_supp:1;
James Bottomley2908d772006-08-29 09:22:51 -0500147 u8 configuring:1;
148 u8 conf_route_table:1;
Luben Tuikovffaac8f2011-09-22 09:41:36 -0700149
James Bottomley2908d772006-08-29 09:22:51 -0500150 u8 enclosure_logical_id[8];
151
152 struct ex_phy *ex_phy;
153 struct sas_port *parent_port;
154};
155
156/* ---------- SATA device ---------- */
157enum ata_command_set {
158 ATA_COMMAND_SET = 0,
159 ATAPI_COMMAND_SET = 1,
160};
161
162struct sata_device {
163 enum ata_command_set command_set;
164 struct smp_resp rps_resp; /* report_phy_sata_resp */
165 __le16 *identify_device;
166 __le16 *identify_packet_device;
167
168 u8 port_no; /* port number, if this is a PM (Port) */
169 struct list_head children; /* PM Ports if this is a PM */
Darrick J. Wongfa1c1e82006-08-10 19:19:47 -0700170
171 struct ata_port *ap;
172 struct ata_host ata_host;
173 struct ata_taskfile tf;
174 u32 sstatus;
175 u32 serror;
176 u32 scontrol;
James Bottomley2908d772006-08-29 09:22:51 -0500177};
178
179/* ---------- Domain device ---------- */
180struct domain_device {
181 enum sas_dev_type dev_type;
182
James Bottomley88edf742006-09-06 17:36:13 -0500183 enum sas_linkrate linkrate;
184 enum sas_linkrate min_linkrate;
185 enum sas_linkrate max_linkrate;
James Bottomley2908d772006-08-29 09:22:51 -0500186
187 int pathways;
188
189 struct domain_device *parent;
190 struct list_head siblings; /* devices on the same level */
191 struct asd_sas_port *port; /* shortcut to root of the tree */
192
193 struct list_head dev_list_node;
194
Darrick J. Wong5929faf2007-11-05 11:51:17 -0800195 enum sas_protocol iproto;
196 enum sas_protocol tproto;
James Bottomley2908d772006-08-29 09:22:51 -0500197
198 struct sas_rphy *rphy;
199
200 u8 sas_addr[SAS_ADDR_SIZE];
201 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
202
203 u8 frame_rcvd[32];
204
205 union {
206 struct expander_device ex_dev;
207 struct sata_device sata_dev; /* STP & directly attached */
208 };
209
210 void *lldd_dev;
Darrick J. Wong56dd2c02010-10-01 13:55:47 -0700211 int gone;
James Bottomley2908d772006-08-29 09:22:51 -0500212};
213
David Howellsc4028952006-11-22 14:57:56 +0000214struct sas_discovery_event {
215 struct work_struct work;
216 struct asd_sas_port *port;
217};
218
James Bottomley2908d772006-08-29 09:22:51 -0500219struct sas_discovery {
220 spinlock_t disc_event_lock;
David Howellsc4028952006-11-22 14:57:56 +0000221 struct sas_discovery_event disc_work[DISC_NUM_EVENTS];
James Bottomley2908d772006-08-29 09:22:51 -0500222 unsigned long pending;
223 u8 fanout_sas_addr[8];
224 u8 eeds_a[8];
225 u8 eeds_b[8];
226 int max_level;
227};
228
229
230/* The port struct is Class:RW, driver:RO */
231struct asd_sas_port {
232/* private: */
233 struct completion port_gone_completion;
234
235 struct sas_discovery disc;
236 struct domain_device *port_dev;
237 spinlock_t dev_list_lock;
238 struct list_head dev_list;
James Bottomley88edf742006-09-06 17:36:13 -0500239 enum sas_linkrate linkrate;
James Bottomley2908d772006-08-29 09:22:51 -0500240
241 struct sas_phy *phy;
242 struct work_struct work;
243
244/* public: */
245 int id;
246
247 enum sas_class class;
248 u8 sas_addr[SAS_ADDR_SIZE];
249 u8 attached_sas_addr[SAS_ADDR_SIZE];
Darrick J. Wong5929faf2007-11-05 11:51:17 -0800250 enum sas_protocol iproto;
251 enum sas_protocol tproto;
James Bottomley2908d772006-08-29 09:22:51 -0500252
253 enum sas_oob_mode oob_mode;
254
255 spinlock_t phy_list_lock;
256 struct list_head phy_list;
257 int num_phys;
258 u32 phy_mask;
259
260 struct sas_ha_struct *ha;
261
262 struct sas_port *port;
263
264 void *lldd_port; /* not touched by the sas class code */
265};
266
David Howellsc4028952006-11-22 14:57:56 +0000267struct asd_sas_event {
268 struct work_struct work;
269 struct asd_sas_phy *phy;
270};
271
James Bottomley2908d772006-08-29 09:22:51 -0500272/* The phy pretty much is controlled by the LLDD.
273 * The class only reads those fields.
274 */
275struct asd_sas_phy {
276/* private: */
277 /* protected by ha->event_lock */
David Howellsc4028952006-11-22 14:57:56 +0000278 struct asd_sas_event port_events[PORT_NUM_EVENTS];
279 struct asd_sas_event phy_events[PHY_NUM_EVENTS];
James Bottomley2908d772006-08-29 09:22:51 -0500280
281 unsigned long port_events_pending;
282 unsigned long phy_events_pending;
283
284 int error;
285
286 struct sas_phy *phy;
287
288/* public: */
289 /* The following are class:RO, driver:R/W */
290 int enabled; /* must be set */
291
292 int id; /* must be set */
293 enum sas_class class;
Darrick J. Wong5929faf2007-11-05 11:51:17 -0800294 enum sas_protocol iproto;
295 enum sas_protocol tproto;
James Bottomley2908d772006-08-29 09:22:51 -0500296
297 enum sas_phy_type type;
298 enum sas_phy_role role;
299 enum sas_oob_mode oob_mode;
James Bottomley88edf742006-09-06 17:36:13 -0500300 enum sas_linkrate linkrate;
James Bottomley2908d772006-08-29 09:22:51 -0500301
302 u8 *sas_addr; /* must be set */
303 u8 attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */
304
305 spinlock_t frame_rcvd_lock;
306 u8 *frame_rcvd; /* must be set */
307 int frame_rcvd_size;
308
309 spinlock_t sas_prim_lock;
310 u32 sas_prim;
311
312 struct list_head port_phy_el; /* driver:RO */
313 struct asd_sas_port *port; /* Class:RW, driver: RO */
314
315 struct sas_ha_struct *ha; /* may be set; the class sets it anyway */
316
317 void *lldd_phy; /* not touched by the sas_class_code */
318};
319
320struct scsi_core {
321 struct Scsi_Host *shost;
322
323 spinlock_t task_queue_lock;
324 struct list_head task_queue;
325 int task_queue_size;
326
Christoph Hellwigd7a54e32007-04-26 09:38:01 -0400327 struct task_struct *queue_thread;
James Bottomley2908d772006-08-29 09:22:51 -0500328};
329
David Howellsc4028952006-11-22 14:57:56 +0000330struct sas_ha_event {
331 struct work_struct work;
332 struct sas_ha_struct *ha;
333};
334
Darrick J. Wong6b0efb82007-01-11 14:15:43 -0800335enum sas_ha_state {
336 SAS_HA_REGISTERED,
337 SAS_HA_UNREGISTERED
338};
339
James Bottomley2908d772006-08-29 09:22:51 -0500340struct sas_ha_struct {
341/* private: */
342 spinlock_t event_lock;
David Howellsc4028952006-11-22 14:57:56 +0000343 struct sas_ha_event ha_events[HA_NUM_EVENTS];
James Bottomley2908d772006-08-29 09:22:51 -0500344 unsigned long pending;
345
Darrick J. Wong6b0efb82007-01-11 14:15:43 -0800346 enum sas_ha_state state;
347 spinlock_t state_lock;
348
James Bottomley2908d772006-08-29 09:22:51 -0500349 struct scsi_core core;
350
351/* public: */
352 char *sas_ha_name;
Jeff Garzik1d1bbee2007-07-26 09:28:37 -0400353 struct device *dev; /* should be set */
James Bottomley2908d772006-08-29 09:22:51 -0500354 struct module *lldd_module; /* should be set */
355
356 u8 *sas_addr; /* must be set */
357 u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE];
358
359 spinlock_t phy_port_lock;
360 struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */
361 struct asd_sas_port **sas_port; /* array of valid pointers, must be set */
362 int num_phys; /* must be set, gt 0, static */
363
364 /* The class calls this to send a task for execution. */
365 int lldd_max_execute_num;
366 int lldd_queue_size;
Dan Williams00f02542010-10-01 13:55:52 -0700367 int strict_wide_ports; /* both sas_addr and attached_sas_addr must match
368 * their siblings when forming wide ports */
James Bottomley2908d772006-08-29 09:22:51 -0500369
370 /* LLDD calls these to notify the class of an event. */
371 void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event);
372 void (*notify_port_event)(struct asd_sas_phy *, enum port_event);
373 void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event);
374
375 void *lldd_ha; /* not touched by sas class code */
Darrick J. Wongf4563932006-10-30 15:18:39 -0800376
377 struct list_head eh_done_q;
James Bottomley2908d772006-08-29 09:22:51 -0500378};
379
380#define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata)
381
382static inline struct domain_device *
383starget_to_domain_dev(struct scsi_target *starget) {
384 return starget->hostdata;
385}
386
387static inline struct domain_device *
388sdev_to_domain_dev(struct scsi_device *sdev) {
389 return starget_to_domain_dev(sdev->sdev_target);
390}
391
Dan Williamsb50102d2011-09-30 18:52:19 -0700392static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev)
393{
394 return &dev->sata_dev.ap->link.device[0];
395}
396
James Bottomley2908d772006-08-29 09:22:51 -0500397static inline struct domain_device *
398cmd_to_domain_dev(struct scsi_cmnd *cmd)
399{
400 return sdev_to_domain_dev(cmd->device);
401}
402
403void sas_hash_addr(u8 *hashed, const u8 *sas_addr);
404
405/* Before calling a notify event, LLDD should use this function
406 * when the link is severed (possibly from its tasklet).
407 * The idea is that the Class only reads those, while the LLDD,
408 * can R/W these (thus avoiding a race).
409 */
410static inline void sas_phy_disconnected(struct asd_sas_phy *phy)
411{
412 phy->oob_mode = OOB_NOT_CONNECTED;
James Bottomley88edf742006-09-06 17:36:13 -0500413 phy->linkrate = SAS_LINK_RATE_UNKNOWN;
James Bottomley2908d772006-08-29 09:22:51 -0500414}
415
Dan Williams8ec65522011-09-01 21:18:20 -0700416static inline unsigned int to_sas_gpio_od(int device, int bit)
417{
418 return 3 * device + bit;
419}
420
Dan Williamsd9624802011-09-23 16:43:45 -0700421#ifdef CONFIG_SCSI_SAS_HOST_SMP
Dan Williams8ec65522011-09-01 21:18:20 -0700422int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count);
Dan Williamsd9624802011-09-23 16:43:45 -0700423#else
424static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count)
425{
426 return -1;
427}
428#endif
Dan Williams8ec65522011-09-01 21:18:20 -0700429
James Bottomley2908d772006-08-29 09:22:51 -0500430/* ---------- Tasks ---------- */
431/*
432 service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED |
433 exec_status | | |
434 ---------------------+---------------------+-----------------------+
435 SAM_... | X | |
436 DEV_NO_RESPONSE | X | X |
437 INTERRUPTED | X | |
438 QUEUE_FULL | | X |
439 DEVICE_UNKNOWN | | X |
440 SG_ERR | | X |
441 ---------------------+---------------------+-----------------------+
442 */
443
444enum service_response {
445 SAS_TASK_COMPLETE,
446 SAS_TASK_UNDELIVERED = -1,
447};
448
449enum exec_status {
James Bottomleydf64d3c2010-07-27 15:51:13 -0500450 /* The SAM_STAT_.. codes fit in the lower 6 bits */
James Bottomley2908d772006-08-29 09:22:51 -0500451
452 SAS_DEV_NO_RESPONSE = 0x80,
453 SAS_DATA_UNDERRUN,
454 SAS_DATA_OVERRUN,
455 SAS_INTERRUPTED,
456 SAS_QUEUE_FULL,
457 SAS_DEVICE_UNKNOWN,
458 SAS_SG_ERR,
459 SAS_OPEN_REJECT,
460 SAS_OPEN_TO,
461 SAS_PROTO_RESPONSE,
462 SAS_PHY_DOWN,
463 SAS_NAK_R_ERR,
464 SAS_PENDING,
465 SAS_ABORTED_TASK,
466};
467
468/* When a task finishes with a response, the LLDD examines the
469 * response:
470 * - For an ATA task task_status_struct::stat is set to
471 * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the
472 * contents of struct ata_task_resp.
473 * - For SSP tasks, if no data is present or status/TMF response
474 * is valid, task_status_struct::stat is set. If data is present
475 * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets
476 * task_status_struct::buf_valid_size, and task_status_struct::stat is
477 * set to SAM_CHECK_COND.
478 *
479 * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp
480 * for ATA task.
481 *
482 * "frame_len" is the total frame length, which could be more or less
483 * than actually copied.
484 *
485 * Tasks ending with response, always set the residual field.
486 */
487struct ata_task_resp {
488 u16 frame_len;
489 u8 ending_fis[24]; /* dev to host or data-in */
490 u32 sstatus;
491 u32 serror;
492 u32 scontrol;
493 u32 sactive;
494};
495
496#define SAS_STATUS_BUF_SIZE 96
497
498struct task_status_struct {
499 enum service_response resp;
500 enum exec_status stat;
501 int buf_valid_size;
502
503 u8 buf[SAS_STATUS_BUF_SIZE];
504
505 u32 residual;
506 enum sas_open_rej_reason open_rej_reason;
507};
508
509/* ATA and ATAPI task queuable to a SAS LLDD.
510 */
511struct sas_ata_task {
512 struct host_to_dev_fis fis;
513 u8 atapi_packet[16]; /* 0 if not ATAPI task */
514
515 u8 retry_count; /* hardware retry, should be > 0 */
516
517 u8 dma_xfer:1; /* PIO:0 or DMA:1 */
518 u8 use_ncq:1;
519 u8 set_affil_pol:1;
520 u8 stp_affil_pol:1;
521
522 u8 device_control_reg_update:1;
523};
524
525struct sas_smp_task {
526 struct scatterlist smp_req;
527 struct scatterlist smp_resp;
528};
529
530enum task_attribute {
531 TASK_ATTR_SIMPLE = 0,
532 TASK_ATTR_HOQ = 1,
533 TASK_ATTR_ORDERED= 2,
534 TASK_ATTR_ACA = 4,
535};
536
537struct sas_ssp_task {
538 u8 retry_count; /* hardware retry, should be > 0 */
539
540 u8 LUN[8];
541 u8 enable_first_burst:1;
542 enum task_attribute task_attr;
543 u8 task_prio;
544 u8 cdb[16];
545};
546
547struct sas_task {
548 struct domain_device *dev;
549 struct list_head list;
550
551 spinlock_t task_state_lock;
552 unsigned task_state_flags;
553
Darrick J. Wong5929faf2007-11-05 11:51:17 -0800554 enum sas_protocol task_proto;
James Bottomley2908d772006-08-29 09:22:51 -0500555
556 /* Used by the discovery code. */
557 struct timer_list timer;
558 struct completion completion;
559
560 union {
561 struct sas_ata_task ata_task;
562 struct sas_smp_task smp_task;
563 struct sas_ssp_task ssp_task;
564 };
565
566 struct scatterlist *scatter;
567 int num_scatter;
568 u32 total_xfer_len;
569 u8 data_dir:2; /* Use PCI_DMA_... */
570
571 struct task_status_struct task_status;
572 void (*task_done)(struct sas_task *);
573
574 void *lldd_task; /* for use by LLDDs */
575 void *uldd_task;
Darrick J. Wong79a5eb62006-10-30 15:18:50 -0800576
577 struct work_struct abort_work;
James Bottomley2908d772006-08-29 09:22:51 -0500578};
579
Darrick J. Wongf4563932006-10-30 15:18:39 -0800580#define SAS_TASK_STATE_PENDING 1
581#define SAS_TASK_STATE_DONE 2
582#define SAS_TASK_STATE_ABORTED 4
Darrick J. Wong3ebf6922007-01-11 14:15:17 -0800583#define SAS_TASK_NEED_DEV_RESET 8
Darrick J. Wongb218a0d2007-01-11 14:14:55 -0800584#define SAS_TASK_AT_INITIATOR 16
James Bottomley2908d772006-08-29 09:22:51 -0500585
Dan Williams4fcf8122011-07-29 17:26:39 -0700586extern struct sas_task *sas_alloc_task(gfp_t flags);
587extern void sas_free_task(struct sas_task *task);
James Bottomley2908d772006-08-29 09:22:51 -0500588
589struct sas_domain_function_template {
590 /* The class calls these to notify the LLDD of an event. */
591 void (*lldd_port_formed)(struct asd_sas_phy *);
592 void (*lldd_port_deformed)(struct asd_sas_phy *);
593
594 /* The class calls these when a device is found or gone. */
595 int (*lldd_dev_found)(struct domain_device *);
596 void (*lldd_dev_gone)(struct domain_device *);
597
598 int (*lldd_execute_task)(struct sas_task *, int num,
Al Viro3cc27542006-09-25 02:55:40 +0100599 gfp_t gfp_flags);
James Bottomley2908d772006-08-29 09:22:51 -0500600
601 /* Task Management Functions. Must be called from process context. */
602 int (*lldd_abort_task)(struct sas_task *);
603 int (*lldd_abort_task_set)(struct domain_device *, u8 *lun);
604 int (*lldd_clear_aca)(struct domain_device *, u8 *lun);
605 int (*lldd_clear_task_set)(struct domain_device *, u8 *lun);
606 int (*lldd_I_T_nexus_reset)(struct domain_device *);
Dave Jiang1ca1e432011-05-24 13:18:04 -0700607 int (*lldd_ata_soft_reset)(struct domain_device *);
James Bottomley2908d772006-08-29 09:22:51 -0500608 int (*lldd_lu_reset)(struct domain_device *, u8 *lun);
609 int (*lldd_query_task)(struct sas_task *);
610
611 /* Port and Adapter management */
612 int (*lldd_clear_nexus_port)(struct asd_sas_port *);
613 int (*lldd_clear_nexus_ha)(struct sas_ha_struct *);
614
615 /* Phy management */
James Bottomleya01e70e2006-09-06 19:28:07 -0500616 int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *);
Dan Williams8ec65522011-09-01 21:18:20 -0700617
618 /* GPIO support */
619 int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type,
620 u8 reg_index, u8 reg_count, u8 *write_data);
James Bottomley2908d772006-08-29 09:22:51 -0500621};
622
623extern int sas_register_ha(struct sas_ha_struct *);
624extern int sas_unregister_ha(struct sas_ha_struct *);
625
Darrick J. Wongacbf1672007-01-11 14:14:57 -0800626int sas_set_phy_speed(struct sas_phy *phy,
627 struct sas_phy_linkrates *rates);
628int sas_phy_enable(struct sas_phy *phy, int enabled);
Darrick J. Wongdea22212006-11-07 17:28:55 -0800629int sas_phy_reset(struct sas_phy *phy, int hard_reset);
Darrick J. Wong338ec572006-10-18 14:43:37 -0700630int sas_queue_up(struct sas_task *task);
Jeff Garzikf2812332010-11-16 02:10:29 -0500631extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *);
James Bottomley2908d772006-08-29 09:22:51 -0500632extern int sas_target_alloc(struct scsi_target *);
633extern int sas_slave_alloc(struct scsi_device *);
634extern int sas_slave_configure(struct scsi_device *);
635extern void sas_slave_destroy(struct scsi_device *);
Mike Christiee881a172009-10-15 17:46:39 -0700636extern int sas_change_queue_depth(struct scsi_device *, int new_depth,
637 int reason);
James Bottomley2908d772006-08-29 09:22:51 -0500638extern int sas_change_queue_type(struct scsi_device *, int qt);
639extern int sas_bios_param(struct scsi_device *,
640 struct block_device *,
641 sector_t capacity, int *hsc);
642extern struct scsi_transport_template *
643sas_domain_attach_transport(struct sas_domain_function_template *);
644extern void sas_domain_release_transport(struct scsi_transport_template *);
645
646int sas_discover_root_expander(struct domain_device *);
647
648void sas_init_ex_attr(void);
649
650int sas_ex_revalidate_domain(struct domain_device *);
651
652void sas_unregister_domain_devices(struct asd_sas_port *port);
653void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *);
654int sas_discover_event(struct asd_sas_port *, enum discover_event ev);
655
656int sas_discover_sata(struct domain_device *);
657int sas_discover_end_dev(struct domain_device *);
658
Dan Williams1a34c062011-09-21 22:05:34 -0700659void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *);
James Bottomley2908d772006-08-29 09:22:51 -0500660
661void sas_init_dev(struct domain_device *);
662
Darrick J. Wong396819f2007-01-11 14:15:20 -0800663void sas_task_abort(struct sas_task *);
664int __sas_task_abort(struct sas_task *);
Darrick J. Wongad689232007-01-26 14:08:52 -0800665int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
Darrick J. Wonga9344e62007-01-29 23:48:19 -0800666int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd);
Darrick J. Wong79a5eb62006-10-30 15:18:50 -0800667
Darrick J. Wongfa1c1e82006-08-10 19:19:47 -0700668extern void sas_target_destroy(struct scsi_target *);
669extern int sas_slave_alloc(struct scsi_device *);
670extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg);
671
FUJITA Tomonoriba1fc172007-07-09 12:52:08 +0900672extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
673 struct request *req);
James Bottomley366ca512008-01-18 10:47:01 -0600674
675extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
676 struct ssp_response_iu *iu);
James Bottomley53195782008-02-23 23:35:44 -0600677struct sas_phy *sas_find_local_phy(struct domain_device *dev);
James Bottomley366ca512008-01-18 10:47:01 -0600678
Darrick J. Wong45e6cdf2008-02-19 10:49:40 -0800679int sas_request_addr(struct Scsi_Host *shost, u8 *addr);
680
James Bottomley2908d772006-08-29 09:22:51 -0500681#endif /* _SASLIB_H_ */