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