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