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2908d778 JB |
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> | |
fa1c1e8f | 33 | #include <linux/libata.h> |
2908d778 | 34 | #include <linux/list.h> |
2908d778 JB |
35 | #include <scsi/scsi_device.h> |
36 | #include <scsi/scsi_cmnd.h> | |
37 | #include <scsi/scsi_transport_sas.h> | |
87ae9afd | 38 | #include <linux/scatterlist.h> |
2908d778 JB |
39 | |
40 | struct block_device; | |
41 | ||
42 | enum sas_class { | |
43 | SAS, | |
44 | EXPANDER | |
45 | }; | |
46 | ||
47 | enum sas_phy_role { | |
48 | PHY_ROLE_NONE = 0, | |
49 | PHY_ROLE_TARGET = 0x40, | |
50 | PHY_ROLE_INITIATOR = 0x80, | |
51 | }; | |
52 | ||
53 | enum sas_phy_type { | |
54 | PHY_TYPE_PHYSICAL, | |
55 | PHY_TYPE_VIRTUAL | |
56 | }; | |
57 | ||
58 | /* The events are mnemonically described in sas_dump.c | |
59 | * so when updating/adding events here, please also | |
60 | * update the other file too. | |
61 | */ | |
62 | enum ha_event { | |
63 | HAE_RESET = 0U, | |
64 | HA_NUM_EVENTS = 1, | |
65 | }; | |
66 | ||
67 | enum port_event { | |
68 | PORTE_BYTES_DMAED = 0U, | |
69 | PORTE_BROADCAST_RCVD = 1, | |
70 | PORTE_LINK_RESET_ERR = 2, | |
71 | PORTE_TIMER_EVENT = 3, | |
72 | PORTE_HARD_RESET = 4, | |
73 | PORT_NUM_EVENTS = 5, | |
74 | }; | |
75 | ||
76 | enum phy_event { | |
77 | PHYE_LOSS_OF_SIGNAL = 0U, | |
78 | PHYE_OOB_DONE = 1, | |
79 | PHYE_OOB_ERROR = 2, | |
80 | PHYE_SPINUP_HOLD = 3, /* hot plug SATA, no COMWAKE sent */ | |
81 | PHY_NUM_EVENTS = 4, | |
82 | }; | |
83 | ||
84 | enum discover_event { | |
85 | DISCE_DISCOVER_DOMAIN = 0U, | |
86 | DISCE_REVALIDATE_DOMAIN = 1, | |
87 | DISCE_PORT_GONE = 2, | |
88 | DISC_NUM_EVENTS = 3, | |
89 | }; | |
90 | ||
91 | /* ---------- Expander Devices ---------- */ | |
92 | ||
2908d778 JB |
93 | #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj) |
94 | #define to_dev_attr(_attr) container_of(_attr, struct domain_dev_attribute,\ | |
95 | attr) | |
96 | ||
97 | enum routing_attribute { | |
98 | DIRECT_ROUTING, | |
99 | SUBTRACTIVE_ROUTING, | |
100 | TABLE_ROUTING, | |
101 | }; | |
102 | ||
103 | enum ex_phy_state { | |
104 | PHY_EMPTY, | |
105 | PHY_VACANT, | |
106 | PHY_NOT_PRESENT, | |
107 | PHY_DEVICE_DISCOVERED | |
108 | }; | |
109 | ||
110 | struct ex_phy { | |
111 | int phy_id; | |
112 | ||
113 | enum ex_phy_state phy_state; | |
114 | ||
115 | enum sas_dev_type attached_dev_type; | |
88edf746 | 116 | enum sas_linkrate linkrate; |
2908d778 JB |
117 | |
118 | u8 attached_sata_host:1; | |
119 | u8 attached_sata_dev:1; | |
120 | u8 attached_sata_ps:1; | |
121 | ||
5929faf3 DW |
122 | enum sas_protocol attached_tproto; |
123 | enum sas_protocol attached_iproto; | |
2908d778 JB |
124 | |
125 | u8 attached_sas_addr[SAS_ADDR_SIZE]; | |
126 | u8 attached_phy_id; | |
127 | ||
128 | u8 phy_change_count; | |
129 | enum routing_attribute routing_attr; | |
130 | u8 virtual:1; | |
131 | ||
132 | int last_da_index; | |
133 | ||
134 | struct sas_phy *phy; | |
135 | struct sas_port *port; | |
136 | }; | |
137 | ||
138 | struct expander_device { | |
139 | struct list_head children; | |
140 | ||
141 | u16 ex_change_count; | |
142 | u16 max_route_indexes; | |
143 | u8 num_phys; | |
144 | u8 configuring:1; | |
145 | u8 conf_route_table:1; | |
146 | u8 enclosure_logical_id[8]; | |
147 | ||
148 | struct ex_phy *ex_phy; | |
149 | struct sas_port *parent_port; | |
150 | }; | |
151 | ||
152 | /* ---------- SATA device ---------- */ | |
153 | enum ata_command_set { | |
154 | ATA_COMMAND_SET = 0, | |
155 | ATAPI_COMMAND_SET = 1, | |
156 | }; | |
157 | ||
158 | struct sata_device { | |
159 | enum ata_command_set command_set; | |
160 | struct smp_resp rps_resp; /* report_phy_sata_resp */ | |
161 | __le16 *identify_device; | |
162 | __le16 *identify_packet_device; | |
163 | ||
164 | u8 port_no; /* port number, if this is a PM (Port) */ | |
165 | struct list_head children; /* PM Ports if this is a PM */ | |
fa1c1e8f DW |
166 | |
167 | struct ata_port *ap; | |
168 | struct ata_host ata_host; | |
169 | struct ata_taskfile tf; | |
170 | u32 sstatus; | |
171 | u32 serror; | |
172 | u32 scontrol; | |
2908d778 JB |
173 | }; |
174 | ||
175 | /* ---------- Domain device ---------- */ | |
176 | struct domain_device { | |
177 | enum sas_dev_type dev_type; | |
178 | ||
88edf746 JB |
179 | enum sas_linkrate linkrate; |
180 | enum sas_linkrate min_linkrate; | |
181 | enum sas_linkrate max_linkrate; | |
2908d778 JB |
182 | |
183 | int pathways; | |
184 | ||
185 | struct domain_device *parent; | |
186 | struct list_head siblings; /* devices on the same level */ | |
187 | struct asd_sas_port *port; /* shortcut to root of the tree */ | |
188 | ||
189 | struct list_head dev_list_node; | |
190 | ||
5929faf3 DW |
191 | enum sas_protocol iproto; |
192 | enum sas_protocol tproto; | |
2908d778 JB |
193 | |
194 | struct sas_rphy *rphy; | |
195 | ||
196 | u8 sas_addr[SAS_ADDR_SIZE]; | |
197 | u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; | |
198 | ||
199 | u8 frame_rcvd[32]; | |
200 | ||
201 | union { | |
202 | struct expander_device ex_dev; | |
203 | struct sata_device sata_dev; /* STP & directly attached */ | |
204 | }; | |
205 | ||
206 | void *lldd_dev; | |
207 | }; | |
208 | ||
c4028958 DH |
209 | struct sas_discovery_event { |
210 | struct work_struct work; | |
211 | struct asd_sas_port *port; | |
212 | }; | |
213 | ||
2908d778 JB |
214 | struct sas_discovery { |
215 | spinlock_t disc_event_lock; | |
c4028958 | 216 | struct sas_discovery_event disc_work[DISC_NUM_EVENTS]; |
2908d778 JB |
217 | unsigned long pending; |
218 | u8 fanout_sas_addr[8]; | |
219 | u8 eeds_a[8]; | |
220 | u8 eeds_b[8]; | |
221 | int max_level; | |
222 | }; | |
223 | ||
224 | ||
225 | /* The port struct is Class:RW, driver:RO */ | |
226 | struct asd_sas_port { | |
227 | /* private: */ | |
228 | struct completion port_gone_completion; | |
229 | ||
230 | struct sas_discovery disc; | |
231 | struct domain_device *port_dev; | |
232 | spinlock_t dev_list_lock; | |
233 | struct list_head dev_list; | |
88edf746 | 234 | enum sas_linkrate linkrate; |
2908d778 JB |
235 | |
236 | struct sas_phy *phy; | |
237 | struct work_struct work; | |
238 | ||
239 | /* public: */ | |
240 | int id; | |
241 | ||
242 | enum sas_class class; | |
243 | u8 sas_addr[SAS_ADDR_SIZE]; | |
244 | u8 attached_sas_addr[SAS_ADDR_SIZE]; | |
5929faf3 DW |
245 | enum sas_protocol iproto; |
246 | enum sas_protocol tproto; | |
2908d778 JB |
247 | |
248 | enum sas_oob_mode oob_mode; | |
249 | ||
250 | spinlock_t phy_list_lock; | |
251 | struct list_head phy_list; | |
252 | int num_phys; | |
253 | u32 phy_mask; | |
254 | ||
255 | struct sas_ha_struct *ha; | |
256 | ||
257 | struct sas_port *port; | |
258 | ||
259 | void *lldd_port; /* not touched by the sas class code */ | |
260 | }; | |
261 | ||
c4028958 DH |
262 | struct asd_sas_event { |
263 | struct work_struct work; | |
264 | struct asd_sas_phy *phy; | |
265 | }; | |
266 | ||
2908d778 JB |
267 | /* The phy pretty much is controlled by the LLDD. |
268 | * The class only reads those fields. | |
269 | */ | |
270 | struct asd_sas_phy { | |
271 | /* private: */ | |
272 | /* protected by ha->event_lock */ | |
c4028958 DH |
273 | struct asd_sas_event port_events[PORT_NUM_EVENTS]; |
274 | struct asd_sas_event phy_events[PHY_NUM_EVENTS]; | |
2908d778 JB |
275 | |
276 | unsigned long port_events_pending; | |
277 | unsigned long phy_events_pending; | |
278 | ||
279 | int error; | |
280 | ||
281 | struct sas_phy *phy; | |
282 | ||
283 | /* public: */ | |
284 | /* The following are class:RO, driver:R/W */ | |
285 | int enabled; /* must be set */ | |
286 | ||
287 | int id; /* must be set */ | |
288 | enum sas_class class; | |
5929faf3 DW |
289 | enum sas_protocol iproto; |
290 | enum sas_protocol tproto; | |
2908d778 JB |
291 | |
292 | enum sas_phy_type type; | |
293 | enum sas_phy_role role; | |
294 | enum sas_oob_mode oob_mode; | |
88edf746 | 295 | enum sas_linkrate linkrate; |
2908d778 JB |
296 | |
297 | u8 *sas_addr; /* must be set */ | |
298 | u8 attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */ | |
299 | ||
300 | spinlock_t frame_rcvd_lock; | |
301 | u8 *frame_rcvd; /* must be set */ | |
302 | int frame_rcvd_size; | |
303 | ||
304 | spinlock_t sas_prim_lock; | |
305 | u32 sas_prim; | |
306 | ||
307 | struct list_head port_phy_el; /* driver:RO */ | |
308 | struct asd_sas_port *port; /* Class:RW, driver: RO */ | |
309 | ||
310 | struct sas_ha_struct *ha; /* may be set; the class sets it anyway */ | |
311 | ||
312 | void *lldd_phy; /* not touched by the sas_class_code */ | |
313 | }; | |
314 | ||
315 | struct scsi_core { | |
316 | struct Scsi_Host *shost; | |
317 | ||
318 | spinlock_t task_queue_lock; | |
319 | struct list_head task_queue; | |
320 | int task_queue_size; | |
321 | ||
d7a54e30 | 322 | struct task_struct *queue_thread; |
2908d778 JB |
323 | }; |
324 | ||
c4028958 DH |
325 | struct sas_ha_event { |
326 | struct work_struct work; | |
327 | struct sas_ha_struct *ha; | |
328 | }; | |
329 | ||
6b0efb85 DW |
330 | enum sas_ha_state { |
331 | SAS_HA_REGISTERED, | |
332 | SAS_HA_UNREGISTERED | |
333 | }; | |
334 | ||
2908d778 JB |
335 | struct sas_ha_struct { |
336 | /* private: */ | |
337 | spinlock_t event_lock; | |
c4028958 | 338 | struct sas_ha_event ha_events[HA_NUM_EVENTS]; |
2908d778 JB |
339 | unsigned long pending; |
340 | ||
6b0efb85 DW |
341 | enum sas_ha_state state; |
342 | spinlock_t state_lock; | |
343 | ||
2908d778 JB |
344 | struct scsi_core core; |
345 | ||
346 | /* public: */ | |
347 | char *sas_ha_name; | |
1d1bbee6 | 348 | struct device *dev; /* should be set */ |
2908d778 JB |
349 | struct module *lldd_module; /* should be set */ |
350 | ||
351 | u8 *sas_addr; /* must be set */ | |
352 | u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; | |
353 | ||
354 | spinlock_t phy_port_lock; | |
355 | struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */ | |
356 | struct asd_sas_port **sas_port; /* array of valid pointers, must be set */ | |
357 | int num_phys; /* must be set, gt 0, static */ | |
358 | ||
359 | /* The class calls this to send a task for execution. */ | |
360 | int lldd_max_execute_num; | |
361 | int lldd_queue_size; | |
362 | ||
363 | /* LLDD calls these to notify the class of an event. */ | |
364 | void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event); | |
365 | void (*notify_port_event)(struct asd_sas_phy *, enum port_event); | |
366 | void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event); | |
367 | ||
368 | void *lldd_ha; /* not touched by sas class code */ | |
f456393e DW |
369 | |
370 | struct list_head eh_done_q; | |
2908d778 JB |
371 | }; |
372 | ||
373 | #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata) | |
374 | ||
375 | static inline struct domain_device * | |
376 | starget_to_domain_dev(struct scsi_target *starget) { | |
377 | return starget->hostdata; | |
378 | } | |
379 | ||
380 | static inline struct domain_device * | |
381 | sdev_to_domain_dev(struct scsi_device *sdev) { | |
382 | return starget_to_domain_dev(sdev->sdev_target); | |
383 | } | |
384 | ||
385 | static inline struct domain_device * | |
386 | cmd_to_domain_dev(struct scsi_cmnd *cmd) | |
387 | { | |
388 | return sdev_to_domain_dev(cmd->device); | |
389 | } | |
390 | ||
391 | void sas_hash_addr(u8 *hashed, const u8 *sas_addr); | |
392 | ||
393 | /* Before calling a notify event, LLDD should use this function | |
394 | * when the link is severed (possibly from its tasklet). | |
395 | * The idea is that the Class only reads those, while the LLDD, | |
396 | * can R/W these (thus avoiding a race). | |
397 | */ | |
398 | static inline void sas_phy_disconnected(struct asd_sas_phy *phy) | |
399 | { | |
400 | phy->oob_mode = OOB_NOT_CONNECTED; | |
88edf746 | 401 | phy->linkrate = SAS_LINK_RATE_UNKNOWN; |
2908d778 JB |
402 | } |
403 | ||
404 | /* ---------- Tasks ---------- */ | |
405 | /* | |
406 | service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED | | |
407 | exec_status | | | | |
408 | ---------------------+---------------------+-----------------------+ | |
409 | SAM_... | X | | | |
410 | DEV_NO_RESPONSE | X | X | | |
411 | INTERRUPTED | X | | | |
412 | QUEUE_FULL | | X | | |
413 | DEVICE_UNKNOWN | | X | | |
414 | SG_ERR | | X | | |
415 | ---------------------+---------------------+-----------------------+ | |
416 | */ | |
417 | ||
418 | enum service_response { | |
419 | SAS_TASK_COMPLETE, | |
420 | SAS_TASK_UNDELIVERED = -1, | |
421 | }; | |
422 | ||
423 | enum exec_status { | |
424 | SAM_GOOD = 0, | |
425 | SAM_CHECK_COND = 2, | |
426 | SAM_COND_MET = 4, | |
427 | SAM_BUSY = 8, | |
428 | SAM_INTERMEDIATE = 0x10, | |
429 | SAM_IM_COND_MET = 0x12, | |
430 | SAM_RESV_CONFLICT= 0x14, | |
431 | SAM_TASK_SET_FULL= 0x28, | |
432 | SAM_ACA_ACTIVE = 0x30, | |
433 | SAM_TASK_ABORTED = 0x40, | |
434 | ||
435 | SAS_DEV_NO_RESPONSE = 0x80, | |
436 | SAS_DATA_UNDERRUN, | |
437 | SAS_DATA_OVERRUN, | |
438 | SAS_INTERRUPTED, | |
439 | SAS_QUEUE_FULL, | |
440 | SAS_DEVICE_UNKNOWN, | |
441 | SAS_SG_ERR, | |
442 | SAS_OPEN_REJECT, | |
443 | SAS_OPEN_TO, | |
444 | SAS_PROTO_RESPONSE, | |
445 | SAS_PHY_DOWN, | |
446 | SAS_NAK_R_ERR, | |
447 | SAS_PENDING, | |
448 | SAS_ABORTED_TASK, | |
449 | }; | |
450 | ||
451 | /* When a task finishes with a response, the LLDD examines the | |
452 | * response: | |
453 | * - For an ATA task task_status_struct::stat is set to | |
454 | * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the | |
455 | * contents of struct ata_task_resp. | |
456 | * - For SSP tasks, if no data is present or status/TMF response | |
457 | * is valid, task_status_struct::stat is set. If data is present | |
458 | * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets | |
459 | * task_status_struct::buf_valid_size, and task_status_struct::stat is | |
460 | * set to SAM_CHECK_COND. | |
461 | * | |
462 | * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp | |
463 | * for ATA task. | |
464 | * | |
465 | * "frame_len" is the total frame length, which could be more or less | |
466 | * than actually copied. | |
467 | * | |
468 | * Tasks ending with response, always set the residual field. | |
469 | */ | |
470 | struct ata_task_resp { | |
471 | u16 frame_len; | |
472 | u8 ending_fis[24]; /* dev to host or data-in */ | |
473 | u32 sstatus; | |
474 | u32 serror; | |
475 | u32 scontrol; | |
476 | u32 sactive; | |
477 | }; | |
478 | ||
479 | #define SAS_STATUS_BUF_SIZE 96 | |
480 | ||
481 | struct task_status_struct { | |
482 | enum service_response resp; | |
483 | enum exec_status stat; | |
484 | int buf_valid_size; | |
485 | ||
486 | u8 buf[SAS_STATUS_BUF_SIZE]; | |
487 | ||
488 | u32 residual; | |
489 | enum sas_open_rej_reason open_rej_reason; | |
490 | }; | |
491 | ||
492 | /* ATA and ATAPI task queuable to a SAS LLDD. | |
493 | */ | |
494 | struct sas_ata_task { | |
495 | struct host_to_dev_fis fis; | |
496 | u8 atapi_packet[16]; /* 0 if not ATAPI task */ | |
497 | ||
498 | u8 retry_count; /* hardware retry, should be > 0 */ | |
499 | ||
500 | u8 dma_xfer:1; /* PIO:0 or DMA:1 */ | |
501 | u8 use_ncq:1; | |
502 | u8 set_affil_pol:1; | |
503 | u8 stp_affil_pol:1; | |
504 | ||
505 | u8 device_control_reg_update:1; | |
506 | }; | |
507 | ||
508 | struct sas_smp_task { | |
509 | struct scatterlist smp_req; | |
510 | struct scatterlist smp_resp; | |
511 | }; | |
512 | ||
513 | enum task_attribute { | |
514 | TASK_ATTR_SIMPLE = 0, | |
515 | TASK_ATTR_HOQ = 1, | |
516 | TASK_ATTR_ORDERED= 2, | |
517 | TASK_ATTR_ACA = 4, | |
518 | }; | |
519 | ||
520 | struct sas_ssp_task { | |
521 | u8 retry_count; /* hardware retry, should be > 0 */ | |
522 | ||
523 | u8 LUN[8]; | |
524 | u8 enable_first_burst:1; | |
525 | enum task_attribute task_attr; | |
526 | u8 task_prio; | |
527 | u8 cdb[16]; | |
528 | }; | |
529 | ||
530 | struct sas_task { | |
531 | struct domain_device *dev; | |
532 | struct list_head list; | |
533 | ||
534 | spinlock_t task_state_lock; | |
535 | unsigned task_state_flags; | |
536 | ||
5929faf3 | 537 | enum sas_protocol task_proto; |
2908d778 JB |
538 | |
539 | /* Used by the discovery code. */ | |
540 | struct timer_list timer; | |
541 | struct completion completion; | |
542 | ||
543 | union { | |
544 | struct sas_ata_task ata_task; | |
545 | struct sas_smp_task smp_task; | |
546 | struct sas_ssp_task ssp_task; | |
547 | }; | |
548 | ||
549 | struct scatterlist *scatter; | |
550 | int num_scatter; | |
551 | u32 total_xfer_len; | |
552 | u8 data_dir:2; /* Use PCI_DMA_... */ | |
553 | ||
554 | struct task_status_struct task_status; | |
555 | void (*task_done)(struct sas_task *); | |
556 | ||
557 | void *lldd_task; /* for use by LLDDs */ | |
558 | void *uldd_task; | |
79a5eb60 DW |
559 | |
560 | struct work_struct abort_work; | |
2908d778 JB |
561 | }; |
562 | ||
8ee24023 | 563 | extern struct kmem_cache *sas_task_cache; |
2908d778 | 564 | |
f456393e DW |
565 | #define SAS_TASK_STATE_PENDING 1 |
566 | #define SAS_TASK_STATE_DONE 2 | |
567 | #define SAS_TASK_STATE_ABORTED 4 | |
3ebf6922 | 568 | #define SAS_TASK_NEED_DEV_RESET 8 |
b218a0d8 | 569 | #define SAS_TASK_AT_INITIATOR 16 |
2908d778 | 570 | |
3cc27547 | 571 | static inline struct sas_task *sas_alloc_task(gfp_t flags) |
2908d778 | 572 | { |
c3762229 | 573 | struct sas_task *task = kmem_cache_zalloc(sas_task_cache, flags); |
2908d778 JB |
574 | |
575 | if (task) { | |
2908d778 JB |
576 | INIT_LIST_HEAD(&task->list); |
577 | spin_lock_init(&task->task_state_lock); | |
578 | task->task_state_flags = SAS_TASK_STATE_PENDING; | |
579 | init_timer(&task->timer); | |
580 | init_completion(&task->completion); | |
581 | } | |
582 | ||
583 | return task; | |
584 | } | |
585 | ||
586 | static inline void sas_free_task(struct sas_task *task) | |
587 | { | |
588 | if (task) { | |
2908d778 JB |
589 | BUG_ON(!list_empty(&task->list)); |
590 | kmem_cache_free(sas_task_cache, task); | |
591 | } | |
592 | } | |
593 | ||
594 | struct sas_domain_function_template { | |
595 | /* The class calls these to notify the LLDD of an event. */ | |
596 | void (*lldd_port_formed)(struct asd_sas_phy *); | |
597 | void (*lldd_port_deformed)(struct asd_sas_phy *); | |
598 | ||
599 | /* The class calls these when a device is found or gone. */ | |
600 | int (*lldd_dev_found)(struct domain_device *); | |
601 | void (*lldd_dev_gone)(struct domain_device *); | |
602 | ||
603 | int (*lldd_execute_task)(struct sas_task *, int num, | |
3cc27547 | 604 | gfp_t gfp_flags); |
2908d778 JB |
605 | |
606 | /* Task Management Functions. Must be called from process context. */ | |
607 | int (*lldd_abort_task)(struct sas_task *); | |
608 | int (*lldd_abort_task_set)(struct domain_device *, u8 *lun); | |
609 | int (*lldd_clear_aca)(struct domain_device *, u8 *lun); | |
610 | int (*lldd_clear_task_set)(struct domain_device *, u8 *lun); | |
611 | int (*lldd_I_T_nexus_reset)(struct domain_device *); | |
612 | int (*lldd_lu_reset)(struct domain_device *, u8 *lun); | |
613 | int (*lldd_query_task)(struct sas_task *); | |
614 | ||
615 | /* Port and Adapter management */ | |
616 | int (*lldd_clear_nexus_port)(struct asd_sas_port *); | |
617 | int (*lldd_clear_nexus_ha)(struct sas_ha_struct *); | |
618 | ||
619 | /* Phy management */ | |
a01e70e5 | 620 | int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *); |
2908d778 JB |
621 | }; |
622 | ||
623 | extern int sas_register_ha(struct sas_ha_struct *); | |
624 | extern int sas_unregister_ha(struct sas_ha_struct *); | |
625 | ||
acbf167d DW |
626 | int sas_set_phy_speed(struct sas_phy *phy, |
627 | struct sas_phy_linkrates *rates); | |
628 | int sas_phy_enable(struct sas_phy *phy, int enabled); | |
dea22214 | 629 | int sas_phy_reset(struct sas_phy *phy, int hard_reset); |
338ec570 | 630 | int sas_queue_up(struct sas_task *task); |
2908d778 JB |
631 | extern int sas_queuecommand(struct scsi_cmnd *, |
632 | void (*scsi_done)(struct scsi_cmnd *)); | |
633 | extern int sas_target_alloc(struct scsi_target *); | |
634 | extern int sas_slave_alloc(struct scsi_device *); | |
635 | extern int sas_slave_configure(struct scsi_device *); | |
636 | extern void sas_slave_destroy(struct scsi_device *); | |
e881a172 MC |
637 | extern int sas_change_queue_depth(struct scsi_device *, int new_depth, |
638 | int reason); | |
2908d778 JB |
639 | extern int sas_change_queue_type(struct scsi_device *, int qt); |
640 | extern int sas_bios_param(struct scsi_device *, | |
641 | struct block_device *, | |
642 | sector_t capacity, int *hsc); | |
643 | extern struct scsi_transport_template * | |
644 | sas_domain_attach_transport(struct sas_domain_function_template *); | |
645 | extern void sas_domain_release_transport(struct scsi_transport_template *); | |
646 | ||
647 | int sas_discover_root_expander(struct domain_device *); | |
648 | ||
649 | void sas_init_ex_attr(void); | |
650 | ||
651 | int sas_ex_revalidate_domain(struct domain_device *); | |
652 | ||
653 | void sas_unregister_domain_devices(struct asd_sas_port *port); | |
654 | void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *); | |
655 | int sas_discover_event(struct asd_sas_port *, enum discover_event ev); | |
656 | ||
657 | int sas_discover_sata(struct domain_device *); | |
658 | int sas_discover_end_dev(struct domain_device *); | |
659 | ||
660 | void sas_unregister_dev(struct domain_device *); | |
661 | ||
662 | void sas_init_dev(struct domain_device *); | |
663 | ||
396819fb DW |
664 | void sas_task_abort(struct sas_task *); |
665 | int __sas_task_abort(struct sas_task *); | |
ad689233 | 666 | int sas_eh_device_reset_handler(struct scsi_cmnd *cmd); |
a9344e68 | 667 | int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd); |
79a5eb60 | 668 | |
fa1c1e8f DW |
669 | extern void sas_target_destroy(struct scsi_target *); |
670 | extern int sas_slave_alloc(struct scsi_device *); | |
671 | extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg); | |
672 | ||
ba1fc175 FT |
673 | extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, |
674 | struct request *req); | |
366ca51f JB |
675 | |
676 | extern void sas_ssp_task_response(struct device *dev, struct sas_task *task, | |
677 | struct ssp_response_iu *iu); | |
5319578c | 678 | struct sas_phy *sas_find_local_phy(struct domain_device *dev); |
366ca51f | 679 | |
45e6cdf4 DW |
680 | int sas_request_addr(struct Scsi_Host *shost, u8 *addr); |
681 | ||
2908d778 | 682 | #endif /* _SASLIB_H_ */ |