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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> |
5a0e3ad6 | 39 | #include <linux/slab.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, | |
87c8331f DW |
89 | DISCE_PROBE = 3, |
90 | DISCE_DESTRUCT = 4, | |
91 | DISC_NUM_EVENTS = 5, | |
2908d778 JB |
92 | }; |
93 | ||
94 | /* ---------- Expander Devices ---------- */ | |
95 | ||
2908d778 JB |
96 | #define to_dom_device(_obj) container_of(_obj, struct domain_device, dev_obj) |
97 | #define to_dev_attr(_attr) container_of(_attr, struct domain_dev_attribute,\ | |
98 | attr) | |
99 | ||
100 | enum routing_attribute { | |
101 | DIRECT_ROUTING, | |
102 | SUBTRACTIVE_ROUTING, | |
103 | TABLE_ROUTING, | |
104 | }; | |
105 | ||
106 | enum ex_phy_state { | |
107 | PHY_EMPTY, | |
108 | PHY_VACANT, | |
109 | PHY_NOT_PRESENT, | |
110 | PHY_DEVICE_DISCOVERED | |
111 | }; | |
112 | ||
113 | struct ex_phy { | |
114 | int phy_id; | |
115 | ||
116 | enum ex_phy_state phy_state; | |
117 | ||
118 | enum sas_dev_type attached_dev_type; | |
88edf746 | 119 | enum sas_linkrate linkrate; |
2908d778 JB |
120 | |
121 | u8 attached_sata_host:1; | |
122 | u8 attached_sata_dev:1; | |
123 | u8 attached_sata_ps:1; | |
124 | ||
5929faf3 DW |
125 | enum sas_protocol attached_tproto; |
126 | enum sas_protocol attached_iproto; | |
2908d778 JB |
127 | |
128 | u8 attached_sas_addr[SAS_ADDR_SIZE]; | |
129 | u8 attached_phy_id; | |
130 | ||
131 | u8 phy_change_count; | |
132 | enum routing_attribute routing_attr; | |
133 | u8 virtual:1; | |
134 | ||
135 | int last_da_index; | |
136 | ||
137 | struct sas_phy *phy; | |
138 | struct sas_port *port; | |
139 | }; | |
140 | ||
141 | struct expander_device { | |
142 | struct list_head children; | |
143 | ||
144 | u16 ex_change_count; | |
145 | u16 max_route_indexes; | |
146 | u8 num_phys; | |
ffaac8f4 LT |
147 | |
148 | u8 t2t_supp:1; | |
2908d778 JB |
149 | u8 configuring:1; |
150 | u8 conf_route_table:1; | |
ffaac8f4 | 151 | |
2908d778 JB |
152 | u8 enclosure_logical_id[8]; |
153 | ||
154 | struct ex_phy *ex_phy; | |
155 | struct sas_port *parent_port; | |
156 | }; | |
157 | ||
158 | /* ---------- SATA device ---------- */ | |
159 | enum ata_command_set { | |
160 | ATA_COMMAND_SET = 0, | |
161 | ATAPI_COMMAND_SET = 1, | |
162 | }; | |
163 | ||
164 | struct sata_device { | |
165 | enum ata_command_set command_set; | |
166 | struct smp_resp rps_resp; /* report_phy_sata_resp */ | |
2908d778 JB |
167 | u8 port_no; /* port number, if this is a PM (Port) */ |
168 | struct list_head children; /* PM Ports if this is a PM */ | |
fa1c1e8f DW |
169 | |
170 | struct ata_port *ap; | |
171 | struct ata_host ata_host; | |
172 | struct ata_taskfile tf; | |
2908d778 JB |
173 | }; |
174 | ||
e139942d DW |
175 | enum { |
176 | SAS_DEV_GONE, | |
87c8331f | 177 | SAS_DEV_DESTROY, |
e139942d DW |
178 | }; |
179 | ||
2908d778 | 180 | struct domain_device { |
9095a64a | 181 | spinlock_t done_lock; |
2908d778 JB |
182 | enum sas_dev_type dev_type; |
183 | ||
88edf746 JB |
184 | enum sas_linkrate linkrate; |
185 | enum sas_linkrate min_linkrate; | |
186 | enum sas_linkrate max_linkrate; | |
2908d778 JB |
187 | |
188 | int pathways; | |
189 | ||
190 | struct domain_device *parent; | |
191 | struct list_head siblings; /* devices on the same level */ | |
192 | struct asd_sas_port *port; /* shortcut to root of the tree */ | |
193 | ||
194 | struct list_head dev_list_node; | |
87c8331f | 195 | struct list_head disco_list_node; /* awaiting probe or destruct */ |
2908d778 | 196 | |
5929faf3 DW |
197 | enum sas_protocol iproto; |
198 | enum sas_protocol tproto; | |
2908d778 JB |
199 | |
200 | struct sas_rphy *rphy; | |
201 | ||
202 | u8 sas_addr[SAS_ADDR_SIZE]; | |
203 | u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; | |
204 | ||
205 | u8 frame_rcvd[32]; | |
206 | ||
207 | union { | |
208 | struct expander_device ex_dev; | |
209 | struct sata_device sata_dev; /* STP & directly attached */ | |
210 | }; | |
211 | ||
212 | void *lldd_dev; | |
e139942d | 213 | unsigned long state; |
735f7d2f | 214 | struct kref kref; |
2908d778 JB |
215 | }; |
216 | ||
c4028958 DH |
217 | struct sas_discovery_event { |
218 | struct work_struct work; | |
219 | struct asd_sas_port *port; | |
220 | }; | |
221 | ||
2908d778 | 222 | struct sas_discovery { |
c4028958 | 223 | struct sas_discovery_event disc_work[DISC_NUM_EVENTS]; |
2908d778 JB |
224 | unsigned long pending; |
225 | u8 fanout_sas_addr[8]; | |
226 | u8 eeds_a[8]; | |
227 | u8 eeds_b[8]; | |
228 | int max_level; | |
229 | }; | |
230 | ||
2908d778 JB |
231 | /* The port struct is Class:RW, driver:RO */ |
232 | struct asd_sas_port { | |
233 | /* private: */ | |
234 | struct completion port_gone_completion; | |
235 | ||
236 | struct sas_discovery disc; | |
237 | struct domain_device *port_dev; | |
238 | spinlock_t dev_list_lock; | |
239 | struct list_head dev_list; | |
87c8331f DW |
240 | struct list_head disco_list; |
241 | struct list_head destroy_list; | |
88edf746 | 242 | enum sas_linkrate linkrate; |
2908d778 JB |
243 | |
244 | struct sas_phy *phy; | |
245 | struct work_struct work; | |
246 | ||
247 | /* public: */ | |
248 | int id; | |
249 | ||
250 | enum sas_class class; | |
251 | u8 sas_addr[SAS_ADDR_SIZE]; | |
252 | u8 attached_sas_addr[SAS_ADDR_SIZE]; | |
5929faf3 DW |
253 | enum sas_protocol iproto; |
254 | enum sas_protocol tproto; | |
2908d778 JB |
255 | |
256 | enum sas_oob_mode oob_mode; | |
257 | ||
258 | spinlock_t phy_list_lock; | |
259 | struct list_head phy_list; | |
260 | int num_phys; | |
261 | u32 phy_mask; | |
262 | ||
263 | struct sas_ha_struct *ha; | |
264 | ||
265 | struct sas_port *port; | |
266 | ||
267 | void *lldd_port; /* not touched by the sas class code */ | |
268 | }; | |
269 | ||
c4028958 DH |
270 | struct asd_sas_event { |
271 | struct work_struct work; | |
272 | struct asd_sas_phy *phy; | |
273 | }; | |
274 | ||
2908d778 JB |
275 | /* The phy pretty much is controlled by the LLDD. |
276 | * The class only reads those fields. | |
277 | */ | |
278 | struct asd_sas_phy { | |
279 | /* private: */ | |
c4028958 DH |
280 | struct asd_sas_event port_events[PORT_NUM_EVENTS]; |
281 | struct asd_sas_event phy_events[PHY_NUM_EVENTS]; | |
2908d778 JB |
282 | |
283 | unsigned long port_events_pending; | |
284 | unsigned long phy_events_pending; | |
285 | ||
286 | int error; | |
287 | ||
288 | struct sas_phy *phy; | |
289 | ||
290 | /* public: */ | |
291 | /* The following are class:RO, driver:R/W */ | |
292 | int enabled; /* must be set */ | |
293 | ||
294 | int id; /* must be set */ | |
295 | enum sas_class class; | |
5929faf3 DW |
296 | enum sas_protocol iproto; |
297 | enum sas_protocol tproto; | |
2908d778 JB |
298 | |
299 | enum sas_phy_type type; | |
300 | enum sas_phy_role role; | |
301 | enum sas_oob_mode oob_mode; | |
88edf746 | 302 | enum sas_linkrate linkrate; |
2908d778 JB |
303 | |
304 | u8 *sas_addr; /* must be set */ | |
305 | u8 attached_sas_addr[SAS_ADDR_SIZE]; /* class:RO, driver: R/W */ | |
306 | ||
307 | spinlock_t frame_rcvd_lock; | |
308 | u8 *frame_rcvd; /* must be set */ | |
309 | int frame_rcvd_size; | |
310 | ||
311 | spinlock_t sas_prim_lock; | |
312 | u32 sas_prim; | |
313 | ||
314 | struct list_head port_phy_el; /* driver:RO */ | |
315 | struct asd_sas_port *port; /* Class:RW, driver: RO */ | |
316 | ||
317 | struct sas_ha_struct *ha; /* may be set; the class sets it anyway */ | |
318 | ||
319 | void *lldd_phy; /* not touched by the sas_class_code */ | |
320 | }; | |
321 | ||
322 | struct scsi_core { | |
323 | struct Scsi_Host *shost; | |
324 | ||
9095a64a | 325 | struct mutex task_queue_flush; |
2908d778 JB |
326 | spinlock_t task_queue_lock; |
327 | struct list_head task_queue; | |
328 | int task_queue_size; | |
329 | ||
d7a54e30 | 330 | struct task_struct *queue_thread; |
2908d778 JB |
331 | }; |
332 | ||
c4028958 DH |
333 | struct sas_ha_event { |
334 | struct work_struct work; | |
335 | struct sas_ha_struct *ha; | |
336 | }; | |
337 | ||
6b0efb85 DW |
338 | enum sas_ha_state { |
339 | SAS_HA_REGISTERED, | |
b1124cd3 | 340 | SAS_HA_DRAINING, |
87c8331f | 341 | SAS_HA_ATA_EH_ACTIVE, |
9095a64a | 342 | SAS_HA_FROZEN, |
6b0efb85 DW |
343 | }; |
344 | ||
2908d778 JB |
345 | struct sas_ha_struct { |
346 | /* private: */ | |
c4028958 | 347 | struct sas_ha_event ha_events[HA_NUM_EVENTS]; |
2908d778 JB |
348 | unsigned long pending; |
349 | ||
b1124cd3 DW |
350 | struct list_head defer_q; /* work queued while draining */ |
351 | struct mutex drain_mutex; | |
f8daa6e6 | 352 | unsigned long state; |
6b0efb85 DW |
353 | spinlock_t state_lock; |
354 | ||
87c8331f DW |
355 | struct mutex disco_mutex; |
356 | ||
2908d778 JB |
357 | struct scsi_core core; |
358 | ||
359 | /* public: */ | |
360 | char *sas_ha_name; | |
1d1bbee6 | 361 | struct device *dev; /* should be set */ |
2908d778 JB |
362 | struct module *lldd_module; /* should be set */ |
363 | ||
364 | u8 *sas_addr; /* must be set */ | |
365 | u8 hashed_sas_addr[HASHED_SAS_ADDR_SIZE]; | |
366 | ||
367 | spinlock_t phy_port_lock; | |
368 | struct asd_sas_phy **sas_phy; /* array of valid pointers, must be set */ | |
369 | struct asd_sas_port **sas_port; /* array of valid pointers, must be set */ | |
370 | int num_phys; /* must be set, gt 0, static */ | |
371 | ||
372 | /* The class calls this to send a task for execution. */ | |
373 | int lldd_max_execute_num; | |
374 | int lldd_queue_size; | |
00f0254e DW |
375 | int strict_wide_ports; /* both sas_addr and attached_sas_addr must match |
376 | * their siblings when forming wide ports */ | |
2908d778 JB |
377 | |
378 | /* LLDD calls these to notify the class of an event. */ | |
379 | void (*notify_ha_event)(struct sas_ha_struct *, enum ha_event); | |
380 | void (*notify_port_event)(struct asd_sas_phy *, enum port_event); | |
381 | void (*notify_phy_event)(struct asd_sas_phy *, enum phy_event); | |
382 | ||
383 | void *lldd_ha; /* not touched by sas class code */ | |
f456393e DW |
384 | |
385 | struct list_head eh_done_q; | |
2908d778 JB |
386 | }; |
387 | ||
388 | #define SHOST_TO_SAS_HA(_shost) (*(struct sas_ha_struct **)(_shost)->hostdata) | |
389 | ||
390 | static inline struct domain_device * | |
391 | starget_to_domain_dev(struct scsi_target *starget) { | |
392 | return starget->hostdata; | |
393 | } | |
394 | ||
395 | static inline struct domain_device * | |
396 | sdev_to_domain_dev(struct scsi_device *sdev) { | |
397 | return starget_to_domain_dev(sdev->sdev_target); | |
398 | } | |
399 | ||
b50102d3 DW |
400 | static inline struct ata_device *sas_to_ata_dev(struct domain_device *dev) |
401 | { | |
402 | return &dev->sata_dev.ap->link.device[0]; | |
403 | } | |
404 | ||
2908d778 JB |
405 | static inline struct domain_device * |
406 | cmd_to_domain_dev(struct scsi_cmnd *cmd) | |
407 | { | |
408 | return sdev_to_domain_dev(cmd->device); | |
409 | } | |
410 | ||
411 | void sas_hash_addr(u8 *hashed, const u8 *sas_addr); | |
412 | ||
413 | /* Before calling a notify event, LLDD should use this function | |
414 | * when the link is severed (possibly from its tasklet). | |
415 | * The idea is that the Class only reads those, while the LLDD, | |
416 | * can R/W these (thus avoiding a race). | |
417 | */ | |
418 | static inline void sas_phy_disconnected(struct asd_sas_phy *phy) | |
419 | { | |
420 | phy->oob_mode = OOB_NOT_CONNECTED; | |
88edf746 | 421 | phy->linkrate = SAS_LINK_RATE_UNKNOWN; |
2908d778 JB |
422 | } |
423 | ||
8ec6552f DW |
424 | static inline unsigned int to_sas_gpio_od(int device, int bit) |
425 | { | |
426 | return 3 * device + bit; | |
427 | } | |
428 | ||
d962480e | 429 | #ifdef CONFIG_SCSI_SAS_HOST_SMP |
8ec6552f | 430 | int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count); |
d962480e DW |
431 | #else |
432 | static inline int try_test_sas_gpio_gp_bit(unsigned int od, u8 *data, u8 index, u8 count) | |
433 | { | |
434 | return -1; | |
435 | } | |
436 | #endif | |
8ec6552f | 437 | |
2908d778 JB |
438 | /* ---------- Tasks ---------- */ |
439 | /* | |
440 | service_response | SAS_TASK_COMPLETE | SAS_TASK_UNDELIVERED | | |
441 | exec_status | | | | |
442 | ---------------------+---------------------+-----------------------+ | |
443 | SAM_... | X | | | |
444 | DEV_NO_RESPONSE | X | X | | |
445 | INTERRUPTED | X | | | |
446 | QUEUE_FULL | | X | | |
447 | DEVICE_UNKNOWN | | X | | |
448 | SG_ERR | | X | | |
449 | ---------------------+---------------------+-----------------------+ | |
450 | */ | |
451 | ||
452 | enum service_response { | |
453 | SAS_TASK_COMPLETE, | |
454 | SAS_TASK_UNDELIVERED = -1, | |
455 | }; | |
456 | ||
457 | enum exec_status { | |
a3a14252 DW |
458 | /* The SAM_STAT_.. codes fit in the lower 6 bits, alias some of |
459 | * them here to silence 'case value not in enumerated type' warnings | |
460 | */ | |
461 | __SAM_STAT_CHECK_CONDITION = SAM_STAT_CHECK_CONDITION, | |
2908d778 JB |
462 | |
463 | SAS_DEV_NO_RESPONSE = 0x80, | |
464 | SAS_DATA_UNDERRUN, | |
465 | SAS_DATA_OVERRUN, | |
466 | SAS_INTERRUPTED, | |
467 | SAS_QUEUE_FULL, | |
468 | SAS_DEVICE_UNKNOWN, | |
469 | SAS_SG_ERR, | |
470 | SAS_OPEN_REJECT, | |
471 | SAS_OPEN_TO, | |
472 | SAS_PROTO_RESPONSE, | |
473 | SAS_PHY_DOWN, | |
474 | SAS_NAK_R_ERR, | |
475 | SAS_PENDING, | |
476 | SAS_ABORTED_TASK, | |
477 | }; | |
478 | ||
479 | /* When a task finishes with a response, the LLDD examines the | |
480 | * response: | |
481 | * - For an ATA task task_status_struct::stat is set to | |
482 | * SAS_PROTO_RESPONSE, and the task_status_struct::buf is set to the | |
483 | * contents of struct ata_task_resp. | |
484 | * - For SSP tasks, if no data is present or status/TMF response | |
485 | * is valid, task_status_struct::stat is set. If data is present | |
486 | * (SENSE data), the LLDD copies up to SAS_STATUS_BUF_SIZE, sets | |
487 | * task_status_struct::buf_valid_size, and task_status_struct::stat is | |
488 | * set to SAM_CHECK_COND. | |
489 | * | |
490 | * "buf" has format SCSI Sense for SSP task, or struct ata_task_resp | |
491 | * for ATA task. | |
492 | * | |
493 | * "frame_len" is the total frame length, which could be more or less | |
494 | * than actually copied. | |
495 | * | |
496 | * Tasks ending with response, always set the residual field. | |
497 | */ | |
498 | struct ata_task_resp { | |
499 | u16 frame_len; | |
500 | u8 ending_fis[24]; /* dev to host or data-in */ | |
2908d778 JB |
501 | }; |
502 | ||
503 | #define SAS_STATUS_BUF_SIZE 96 | |
504 | ||
505 | struct task_status_struct { | |
506 | enum service_response resp; | |
507 | enum exec_status stat; | |
508 | int buf_valid_size; | |
509 | ||
510 | u8 buf[SAS_STATUS_BUF_SIZE]; | |
511 | ||
512 | u32 residual; | |
513 | enum sas_open_rej_reason open_rej_reason; | |
514 | }; | |
515 | ||
516 | /* ATA and ATAPI task queuable to a SAS LLDD. | |
517 | */ | |
518 | struct sas_ata_task { | |
519 | struct host_to_dev_fis fis; | |
520 | u8 atapi_packet[16]; /* 0 if not ATAPI task */ | |
521 | ||
522 | u8 retry_count; /* hardware retry, should be > 0 */ | |
523 | ||
524 | u8 dma_xfer:1; /* PIO:0 or DMA:1 */ | |
525 | u8 use_ncq:1; | |
526 | u8 set_affil_pol:1; | |
527 | u8 stp_affil_pol:1; | |
528 | ||
529 | u8 device_control_reg_update:1; | |
530 | }; | |
531 | ||
532 | struct sas_smp_task { | |
533 | struct scatterlist smp_req; | |
534 | struct scatterlist smp_resp; | |
535 | }; | |
536 | ||
537 | enum task_attribute { | |
538 | TASK_ATTR_SIMPLE = 0, | |
539 | TASK_ATTR_HOQ = 1, | |
540 | TASK_ATTR_ORDERED= 2, | |
541 | TASK_ATTR_ACA = 4, | |
542 | }; | |
543 | ||
544 | struct sas_ssp_task { | |
545 | u8 retry_count; /* hardware retry, should be > 0 */ | |
546 | ||
547 | u8 LUN[8]; | |
548 | u8 enable_first_burst:1; | |
549 | enum task_attribute task_attr; | |
550 | u8 task_prio; | |
551 | u8 cdb[16]; | |
552 | }; | |
553 | ||
554 | struct sas_task { | |
555 | struct domain_device *dev; | |
556 | struct list_head list; | |
557 | ||
558 | spinlock_t task_state_lock; | |
559 | unsigned task_state_flags; | |
560 | ||
5929faf3 | 561 | enum sas_protocol task_proto; |
2908d778 JB |
562 | |
563 | /* Used by the discovery code. */ | |
564 | struct timer_list timer; | |
565 | struct completion completion; | |
566 | ||
567 | union { | |
568 | struct sas_ata_task ata_task; | |
569 | struct sas_smp_task smp_task; | |
570 | struct sas_ssp_task ssp_task; | |
571 | }; | |
572 | ||
573 | struct scatterlist *scatter; | |
574 | int num_scatter; | |
575 | u32 total_xfer_len; | |
576 | u8 data_dir:2; /* Use PCI_DMA_... */ | |
577 | ||
578 | struct task_status_struct task_status; | |
579 | void (*task_done)(struct sas_task *); | |
580 | ||
581 | void *lldd_task; /* for use by LLDDs */ | |
582 | void *uldd_task; | |
79a5eb60 DW |
583 | |
584 | struct work_struct abort_work; | |
2908d778 JB |
585 | }; |
586 | ||
f456393e DW |
587 | #define SAS_TASK_STATE_PENDING 1 |
588 | #define SAS_TASK_STATE_DONE 2 | |
589 | #define SAS_TASK_STATE_ABORTED 4 | |
3ebf6922 | 590 | #define SAS_TASK_NEED_DEV_RESET 8 |
b218a0d8 | 591 | #define SAS_TASK_AT_INITIATOR 16 |
2908d778 | 592 | |
4fcf812c DW |
593 | extern struct sas_task *sas_alloc_task(gfp_t flags); |
594 | extern void sas_free_task(struct sas_task *task); | |
2908d778 JB |
595 | |
596 | struct sas_domain_function_template { | |
597 | /* The class calls these to notify the LLDD of an event. */ | |
598 | void (*lldd_port_formed)(struct asd_sas_phy *); | |
599 | void (*lldd_port_deformed)(struct asd_sas_phy *); | |
600 | ||
601 | /* The class calls these when a device is found or gone. */ | |
602 | int (*lldd_dev_found)(struct domain_device *); | |
603 | void (*lldd_dev_gone)(struct domain_device *); | |
604 | ||
605 | int (*lldd_execute_task)(struct sas_task *, int num, | |
3cc27547 | 606 | gfp_t gfp_flags); |
2908d778 JB |
607 | |
608 | /* Task Management Functions. Must be called from process context. */ | |
609 | int (*lldd_abort_task)(struct sas_task *); | |
610 | int (*lldd_abort_task_set)(struct domain_device *, u8 *lun); | |
611 | int (*lldd_clear_aca)(struct domain_device *, u8 *lun); | |
612 | int (*lldd_clear_task_set)(struct domain_device *, u8 *lun); | |
613 | int (*lldd_I_T_nexus_reset)(struct domain_device *); | |
1ca1e43e | 614 | int (*lldd_ata_soft_reset)(struct domain_device *); |
b91bb296 | 615 | void (*lldd_ata_set_dmamode)(struct domain_device *); |
2908d778 JB |
616 | int (*lldd_lu_reset)(struct domain_device *, u8 *lun); |
617 | int (*lldd_query_task)(struct sas_task *); | |
618 | ||
619 | /* Port and Adapter management */ | |
620 | int (*lldd_clear_nexus_port)(struct asd_sas_port *); | |
621 | int (*lldd_clear_nexus_ha)(struct sas_ha_struct *); | |
622 | ||
623 | /* Phy management */ | |
a01e70e5 | 624 | int (*lldd_control_phy)(struct asd_sas_phy *, enum phy_func, void *); |
8ec6552f DW |
625 | |
626 | /* GPIO support */ | |
627 | int (*lldd_write_gpio)(struct sas_ha_struct *, u8 reg_type, | |
628 | u8 reg_index, u8 reg_count, u8 *write_data); | |
2908d778 JB |
629 | }; |
630 | ||
631 | extern int sas_register_ha(struct sas_ha_struct *); | |
632 | extern int sas_unregister_ha(struct sas_ha_struct *); | |
633 | ||
acbf167d DW |
634 | int sas_set_phy_speed(struct sas_phy *phy, |
635 | struct sas_phy_linkrates *rates); | |
636 | int sas_phy_enable(struct sas_phy *phy, int enabled); | |
dea22214 | 637 | int sas_phy_reset(struct sas_phy *phy, int hard_reset); |
338ec570 | 638 | int sas_queue_up(struct sas_task *task); |
f281233d | 639 | extern int sas_queuecommand(struct Scsi_Host * ,struct scsi_cmnd *); |
2908d778 JB |
640 | extern int sas_target_alloc(struct scsi_target *); |
641 | extern int sas_slave_alloc(struct scsi_device *); | |
642 | extern int sas_slave_configure(struct scsi_device *); | |
e881a172 MC |
643 | extern int sas_change_queue_depth(struct scsi_device *, int new_depth, |
644 | int reason); | |
2908d778 JB |
645 | extern int sas_change_queue_type(struct scsi_device *, int qt); |
646 | extern int sas_bios_param(struct scsi_device *, | |
647 | struct block_device *, | |
648 | sector_t capacity, int *hsc); | |
649 | extern struct scsi_transport_template * | |
650 | sas_domain_attach_transport(struct sas_domain_function_template *); | |
651 | extern void sas_domain_release_transport(struct scsi_transport_template *); | |
652 | ||
653 | int sas_discover_root_expander(struct domain_device *); | |
654 | ||
655 | void sas_init_ex_attr(void); | |
656 | ||
657 | int sas_ex_revalidate_domain(struct domain_device *); | |
658 | ||
659 | void sas_unregister_domain_devices(struct asd_sas_port *port); | |
660 | void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *); | |
661 | int sas_discover_event(struct asd_sas_port *, enum discover_event ev); | |
662 | ||
663 | int sas_discover_sata(struct domain_device *); | |
664 | int sas_discover_end_dev(struct domain_device *); | |
665 | ||
1a34c064 | 666 | void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *); |
2908d778 JB |
667 | |
668 | void sas_init_dev(struct domain_device *); | |
669 | ||
396819fb | 670 | void sas_task_abort(struct sas_task *); |
ad689233 | 671 | int sas_eh_device_reset_handler(struct scsi_cmnd *cmd); |
a9344e68 | 672 | int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd); |
79a5eb60 | 673 | |
fa1c1e8f DW |
674 | extern void sas_target_destroy(struct scsi_target *); |
675 | extern int sas_slave_alloc(struct scsi_device *); | |
676 | extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg); | |
b1124cd3 | 677 | extern int sas_drain_work(struct sas_ha_struct *ha); |
fa1c1e8f | 678 | |
ba1fc175 FT |
679 | extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, |
680 | struct request *req); | |
366ca51f JB |
681 | |
682 | extern void sas_ssp_task_response(struct device *dev, struct sas_task *task, | |
683 | struct ssp_response_iu *iu); | |
5319578c | 684 | struct sas_phy *sas_find_local_phy(struct domain_device *dev); |
366ca51f | 685 | |
45e6cdf4 DW |
686 | int sas_request_addr(struct Scsi_Host *shost, u8 *addr); |
687 | ||
2908d778 | 688 | #endif /* _SASLIB_H_ */ |