2 * This file is provided under a dual BSD/GPLv2 license. When using or
3 * redistributing this file, you may do so under either license.
7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of version 2 of the GNU General Public License as
11 * published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
27 * All rights reserved.
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30 * modification, are permitted provided that the following conditions
33 * * Redistributions of source code must retain the above copyright
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41 * from this software without specific prior written permission.
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
57 #include "state_machine.h"
58 #include "remote_device.h"
59 #include "remote_node_context.h"
60 #include "scu_event_codes.h"
61 #include "scu_task_context.h"
66 * @sci_rnc: The RNC for which the is posted request is being made.
68 * This method will return true if the RNC is not in the initial state. In all
69 * other states the RNC is considered active and this will return true. The
70 * destroy request of the state machine drives the RNC back to the initial
71 * state. If the state machine changes then this routine will also have to be
72 * changed. bool true if the state machine is not in the initial state false if
73 * the state machine is in the initial state
78 * @sci_rnc: The state of the remote node context object to check.
80 * This method will return true if the remote node context is in a READY state
81 * otherwise it will return false bool true if the remote node context is in
82 * the ready state. false if the remote node context is not in the ready state.
84 bool scic_sds_remote_node_context_is_ready(
85 struct scic_sds_remote_node_context
*sci_rnc
)
87 u32 current_state
= sci_base_state_machine_get_state(&sci_rnc
->state_machine
);
89 if (current_state
== SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
) {
98 * @sci_dev: The remote device to use to construct the RNC buffer.
99 * @rnc: The buffer into which the remote device data will be copied.
101 * This method will construct the RNC buffer for this remote device object. none
103 static void scic_sds_remote_node_context_construct_buffer(
104 struct scic_sds_remote_node_context
*sci_rnc
)
106 struct scic_sds_remote_device
*sci_dev
= rnc_to_dev(sci_rnc
);
107 struct domain_device
*dev
= sci_dev_to_domain(sci_dev
);
108 int rni
= sci_rnc
->remote_node_index
;
109 union scu_remote_node_context
*rnc
;
110 struct scic_sds_controller
*scic
;
113 scic
= scic_sds_remote_device_get_controller(sci_dev
);
114 rnc
= scic_sds_controller_get_remote_node_context_buffer(scic
, rni
);
116 memset(rnc
, 0, sizeof(union scu_remote_node_context
)
117 * scic_sds_remote_device_node_count(sci_dev
));
119 rnc
->ssp
.remote_node_index
= rni
;
120 rnc
->ssp
.remote_node_port_width
= sci_dev
->device_port_width
;
121 rnc
->ssp
.logical_port_index
= sci_dev
->owning_port
->physical_port_index
;
123 /* sas address is __be64, context ram format is __le64 */
124 sas_addr
= cpu_to_le64(SAS_ADDR(dev
->sas_addr
));
125 rnc
->ssp
.remote_sas_address_hi
= upper_32_bits(sas_addr
);
126 rnc
->ssp
.remote_sas_address_lo
= lower_32_bits(sas_addr
);
128 rnc
->ssp
.nexus_loss_timer_enable
= true;
129 rnc
->ssp
.check_bit
= false;
130 rnc
->ssp
.is_valid
= false;
131 rnc
->ssp
.is_remote_node_context
= true;
132 rnc
->ssp
.function_number
= 0;
134 rnc
->ssp
.arbitration_wait_time
= 0;
136 if (dev
->dev_type
== SATA_DEV
|| (dev
->tproto
& SAS_PROTOCOL_STP
)) {
137 rnc
->ssp
.connection_occupancy_timeout
=
138 scic
->user_parameters
.sds1
.stp_max_occupancy_timeout
;
139 rnc
->ssp
.connection_inactivity_timeout
=
140 scic
->user_parameters
.sds1
.stp_inactivity_timeout
;
142 rnc
->ssp
.connection_occupancy_timeout
=
143 scic
->user_parameters
.sds1
.ssp_max_occupancy_timeout
;
144 rnc
->ssp
.connection_inactivity_timeout
=
145 scic
->user_parameters
.sds1
.ssp_inactivity_timeout
;
148 rnc
->ssp
.initial_arbitration_wait_time
= 0;
150 /* Open Address Frame Parameters */
151 rnc
->ssp
.oaf_connection_rate
= sci_dev
->connection_rate
;
152 rnc
->ssp
.oaf_features
= 0;
153 rnc
->ssp
.oaf_source_zone_group
= 0;
154 rnc
->ssp
.oaf_more_compatibility_features
= 0;
161 * @callback_parameter:
163 * This method will setup the remote node context object so it will transition
164 * to its ready state. If the remote node context is already setup to
165 * transition to its final state then this function does nothing. none
167 static void scic_sds_remote_node_context_setup_to_resume(
168 struct scic_sds_remote_node_context
*sci_rnc
,
169 scics_sds_remote_node_context_callback callback
,
170 void *callback_parameter
)
172 if (sci_rnc
->destination_state
!= SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL
) {
173 sci_rnc
->destination_state
= SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY
;
174 sci_rnc
->user_callback
= callback
;
175 sci_rnc
->user_cookie
= callback_parameter
;
179 static void scic_sds_remote_node_context_setup_to_destory(
180 struct scic_sds_remote_node_context
*sci_rnc
,
181 scics_sds_remote_node_context_callback callback
,
182 void *callback_parameter
)
184 sci_rnc
->destination_state
= SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL
;
185 sci_rnc
->user_callback
= callback
;
186 sci_rnc
->user_cookie
= callback_parameter
;
192 * This method just calls the user callback function and then resets the
195 static void scic_sds_remote_node_context_notify_user(
196 struct scic_sds_remote_node_context
*rnc
)
198 if (rnc
->user_callback
!= NULL
) {
199 (*rnc
->user_callback
)(rnc
->user_cookie
);
201 rnc
->user_callback
= NULL
;
202 rnc
->user_cookie
= NULL
;
206 static void scic_sds_remote_node_context_continue_state_transitions(struct scic_sds_remote_node_context
*rnc
)
208 if (rnc
->destination_state
== SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY
)
209 scic_sds_remote_node_context_resume(rnc
, rnc
->user_callback
,
215 * @sci_rnc: The remote node context object that is to be validated.
217 * This method will mark the rnc buffer as being valid and post the request to
220 static void scic_sds_remote_node_context_validate_context_buffer(
221 struct scic_sds_remote_node_context
*sci_rnc
)
223 struct scic_sds_remote_device
*sci_dev
= rnc_to_dev(sci_rnc
);
224 struct domain_device
*dev
= sci_dev_to_domain(sci_dev
);
225 union scu_remote_node_context
*rnc_buffer
;
227 rnc_buffer
= scic_sds_controller_get_remote_node_context_buffer(
228 scic_sds_remote_device_get_controller(sci_dev
),
229 sci_rnc
->remote_node_index
232 rnc_buffer
->ssp
.is_valid
= true;
234 if (!sci_dev
->is_direct_attached
&&
235 (dev
->dev_type
== SATA_DEV
|| (dev
->tproto
& SAS_PROTOCOL_STP
))) {
236 scic_sds_remote_device_post_request(sci_dev
,
237 SCU_CONTEXT_COMMAND_POST_RNC_96
);
239 scic_sds_remote_device_post_request(sci_dev
, SCU_CONTEXT_COMMAND_POST_RNC_32
);
241 if (sci_dev
->is_direct_attached
) {
242 scic_sds_port_setup_transports(sci_dev
->owning_port
,
243 sci_rnc
->remote_node_index
);
250 * @sci_rnc: The remote node context object that is to be invalidated.
252 * This method will update the RNC buffer and post the invalidate request. none
254 static void scic_sds_remote_node_context_invalidate_context_buffer(
255 struct scic_sds_remote_node_context
*sci_rnc
)
257 union scu_remote_node_context
*rnc_buffer
;
259 rnc_buffer
= scic_sds_controller_get_remote_node_context_buffer(
260 scic_sds_remote_device_get_controller(rnc_to_dev(sci_rnc
)),
261 sci_rnc
->remote_node_index
);
263 rnc_buffer
->ssp
.is_valid
= false;
265 scic_sds_remote_device_post_request(rnc_to_dev(sci_rnc
),
266 SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE
);
269 static void scic_sds_remote_node_context_initial_state_enter(struct sci_base_state_machine
*sm
)
271 struct scic_sds_remote_node_context
*rnc
= container_of(sm
, typeof(*rnc
), state_machine
);
273 /* Check to see if we have gotten back to the initial state because
274 * someone requested to destroy the remote node context object.
276 if (sm
->previous_state_id
== SCIC_SDS_REMOTE_NODE_CONTEXT_INVALIDATING_STATE
) {
277 rnc
->destination_state
= SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED
;
278 scic_sds_remote_node_context_notify_user(rnc
);
282 static void scic_sds_remote_node_context_posting_state_enter(struct sci_base_state_machine
*sm
)
284 struct scic_sds_remote_node_context
*sci_rnc
= container_of(sm
, typeof(*sci_rnc
), state_machine
);
286 scic_sds_remote_node_context_validate_context_buffer(sci_rnc
);
289 static void scic_sds_remote_node_context_invalidating_state_enter(struct sci_base_state_machine
*sm
)
291 struct scic_sds_remote_node_context
*rnc
= container_of(sm
, typeof(*rnc
), state_machine
);
293 scic_sds_remote_node_context_invalidate_context_buffer(rnc
);
296 static void scic_sds_remote_node_context_resuming_state_enter(struct sci_base_state_machine
*sm
)
298 struct scic_sds_remote_node_context
*rnc
= container_of(sm
, typeof(*rnc
), state_machine
);
299 struct scic_sds_remote_device
*sci_dev
;
300 struct domain_device
*dev
;
302 sci_dev
= rnc_to_dev(rnc
);
303 dev
= sci_dev_to_domain(sci_dev
);
306 * For direct attached SATA devices we need to clear the TLCR
307 * NCQ to TCi tag mapping on the phy and in cases where we
308 * resume because of a target reset we also need to update
309 * the STPTLDARNI register with the RNi of the device
311 if ((dev
->dev_type
== SATA_DEV
|| (dev
->tproto
& SAS_PROTOCOL_STP
)) &&
312 sci_dev
->is_direct_attached
)
313 scic_sds_port_setup_transports(sci_dev
->owning_port
,
314 rnc
->remote_node_index
);
316 scic_sds_remote_device_post_request(sci_dev
, SCU_CONTEXT_COMMAND_POST_RNC_RESUME
);
319 static void scic_sds_remote_node_context_ready_state_enter(struct sci_base_state_machine
*sm
)
321 struct scic_sds_remote_node_context
*rnc
= container_of(sm
, typeof(*rnc
), state_machine
);
323 rnc
->destination_state
= SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED
;
325 if (rnc
->user_callback
)
326 scic_sds_remote_node_context_notify_user(rnc
);
329 static void scic_sds_remote_node_context_tx_suspended_state_enter(struct sci_base_state_machine
*sm
)
331 struct scic_sds_remote_node_context
*rnc
= container_of(sm
, typeof(*rnc
), state_machine
);
333 scic_sds_remote_node_context_continue_state_transitions(rnc
);
336 static void scic_sds_remote_node_context_tx_rx_suspended_state_enter(struct sci_base_state_machine
*sm
)
338 struct scic_sds_remote_node_context
*rnc
= container_of(sm
, typeof(*rnc
), state_machine
);
340 scic_sds_remote_node_context_continue_state_transitions(rnc
);
343 static const struct sci_base_state scic_sds_remote_node_context_state_table
[] = {
344 [SCIC_SDS_REMOTE_NODE_CONTEXT_INITIAL_STATE
] = {
345 .enter_state
= scic_sds_remote_node_context_initial_state_enter
,
347 [SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE
] = {
348 .enter_state
= scic_sds_remote_node_context_posting_state_enter
,
350 [SCIC_SDS_REMOTE_NODE_CONTEXT_INVALIDATING_STATE
] = {
351 .enter_state
= scic_sds_remote_node_context_invalidating_state_enter
,
353 [SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE
] = {
354 .enter_state
= scic_sds_remote_node_context_resuming_state_enter
,
356 [SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
] = {
357 .enter_state
= scic_sds_remote_node_context_ready_state_enter
,
359 [SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE
] = {
360 .enter_state
= scic_sds_remote_node_context_tx_suspended_state_enter
,
362 [SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE
] = {
363 .enter_state
= scic_sds_remote_node_context_tx_rx_suspended_state_enter
,
365 [SCIC_SDS_REMOTE_NODE_CONTEXT_AWAIT_SUSPENSION_STATE
] = { },
368 void scic_sds_remote_node_context_construct(struct scic_sds_remote_node_context
*rnc
,
369 u16 remote_node_index
)
371 memset(rnc
, 0, sizeof(struct scic_sds_remote_node_context
));
373 rnc
->remote_node_index
= remote_node_index
;
374 rnc
->destination_state
= SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED
;
376 sci_base_state_machine_construct(&rnc
->state_machine
,
377 scic_sds_remote_node_context_state_table
,
378 SCIC_SDS_REMOTE_NODE_CONTEXT_INITIAL_STATE
);
380 sci_base_state_machine_start(&rnc
->state_machine
);
383 enum sci_status
scic_sds_remote_node_context_event_handler(struct scic_sds_remote_node_context
*sci_rnc
,
386 enum scis_sds_remote_node_context_states state
;
388 state
= sci_rnc
->state_machine
.current_state_id
;
390 case SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE
:
391 switch (scu_get_event_code(event_code
)) {
392 case SCU_EVENT_POST_RNC_COMPLETE
:
393 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
394 SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
);
400 case SCIC_SDS_REMOTE_NODE_CONTEXT_INVALIDATING_STATE
:
401 if (scu_get_event_code(event_code
) == SCU_EVENT_POST_RNC_INVALIDATE_COMPLETE
) {
402 if (sci_rnc
->destination_state
== SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL
)
403 state
= SCIC_SDS_REMOTE_NODE_CONTEXT_INITIAL_STATE
;
405 state
= SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE
;
406 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
409 switch (scu_get_event_type(event_code
)) {
410 case SCU_EVENT_TYPE_RNC_SUSPEND_TX
:
411 case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX
:
412 /* We really dont care if the hardware is going to suspend
413 * the device since it's being invalidated anyway */
414 dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
415 "%s: SCIC Remote Node Context 0x%p was "
416 "suspeneded by hardware while being "
417 "invalidated.\n", __func__
, sci_rnc
);
424 case SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE
:
425 if (scu_get_event_code(event_code
) == SCU_EVENT_POST_RCN_RELEASE
) {
426 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
427 SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
);
429 switch (scu_get_event_type(event_code
)) {
430 case SCU_EVENT_TYPE_RNC_SUSPEND_TX
:
431 case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX
:
432 /* We really dont care if the hardware is going to suspend
433 * the device since it's being resumed anyway */
434 dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
435 "%s: SCIC Remote Node Context 0x%p was "
436 "suspeneded by hardware while being resumed.\n",
444 case SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
:
445 switch (scu_get_event_type(event_code
)) {
446 case SCU_EVENT_TL_RNC_SUSPEND_TX
:
447 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
448 SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE
);
449 sci_rnc
->suspension_code
= scu_get_event_specifier(event_code
);
451 case SCU_EVENT_TL_RNC_SUSPEND_TX_RX
:
452 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
453 SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE
);
454 sci_rnc
->suspension_code
= scu_get_event_specifier(event_code
);
460 case SCIC_SDS_REMOTE_NODE_CONTEXT_AWAIT_SUSPENSION_STATE
:
461 switch (scu_get_event_type(event_code
)) {
462 case SCU_EVENT_TL_RNC_SUSPEND_TX
:
463 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
464 SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE
);
465 sci_rnc
->suspension_code
= scu_get_event_specifier(event_code
);
467 case SCU_EVENT_TL_RNC_SUSPEND_TX_RX
:
468 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
469 SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE
);
470 sci_rnc
->suspension_code
= scu_get_event_specifier(event_code
);
477 dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
478 "%s: invalid state %d\n", __func__
, state
);
479 return SCI_FAILURE_INVALID_STATE
;
484 dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
485 "%s: code: %#x state: %d\n", __func__
, event_code
, state
);
490 enum sci_status
scic_sds_remote_node_context_destruct(struct scic_sds_remote_node_context
*sci_rnc
,
491 scics_sds_remote_node_context_callback cb_fn
,
494 enum scis_sds_remote_node_context_states state
;
496 state
= sci_rnc
->state_machine
.current_state_id
;
498 case SCIC_SDS_REMOTE_NODE_CONTEXT_INVALIDATING_STATE
:
499 scic_sds_remote_node_context_setup_to_destory(sci_rnc
, cb_fn
, cb_p
);
501 case SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE
:
502 case SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE
:
503 case SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
:
504 case SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE
:
505 case SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE
:
506 case SCIC_SDS_REMOTE_NODE_CONTEXT_AWAIT_SUSPENSION_STATE
:
507 scic_sds_remote_node_context_setup_to_destory(sci_rnc
, cb_fn
, cb_p
);
508 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
509 SCIC_SDS_REMOTE_NODE_CONTEXT_INVALIDATING_STATE
);
511 case SCIC_SDS_REMOTE_NODE_CONTEXT_INITIAL_STATE
:
512 dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
513 "%s: invalid state %d\n", __func__
, state
);
514 /* We have decided that the destruct request on the remote node context
515 * can not fail since it is either in the initial/destroyed state or is
520 dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
521 "%s: invalid state %d\n", __func__
, state
);
522 return SCI_FAILURE_INVALID_STATE
;
526 enum sci_status
scic_sds_remote_node_context_suspend(struct scic_sds_remote_node_context
*sci_rnc
,
528 scics_sds_remote_node_context_callback cb_fn
,
531 enum scis_sds_remote_node_context_states state
;
533 state
= sci_rnc
->state_machine
.current_state_id
;
534 if (state
!= SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
) {
535 dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
536 "%s: invalid state %d\n", __func__
, state
);
537 return SCI_FAILURE_INVALID_STATE
;
540 sci_rnc
->user_callback
= cb_fn
;
541 sci_rnc
->user_cookie
= cb_p
;
542 sci_rnc
->suspension_code
= suspend_type
;
544 if (suspend_type
== SCI_SOFTWARE_SUSPENSION
) {
545 scic_sds_remote_device_post_request(rnc_to_dev(sci_rnc
),
546 SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX
);
549 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
550 SCIC_SDS_REMOTE_NODE_CONTEXT_AWAIT_SUSPENSION_STATE
);
554 enum sci_status
scic_sds_remote_node_context_resume(struct scic_sds_remote_node_context
*sci_rnc
,
555 scics_sds_remote_node_context_callback cb_fn
,
558 enum scis_sds_remote_node_context_states state
;
560 state
= sci_rnc
->state_machine
.current_state_id
;
562 case SCIC_SDS_REMOTE_NODE_CONTEXT_INITIAL_STATE
:
563 if (sci_rnc
->remote_node_index
== SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX
)
564 return SCI_FAILURE_INVALID_STATE
;
566 scic_sds_remote_node_context_setup_to_resume(sci_rnc
, cb_fn
, cb_p
);
567 scic_sds_remote_node_context_construct_buffer(sci_rnc
);
568 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
569 SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE
);
571 case SCIC_SDS_REMOTE_NODE_CONTEXT_POSTING_STATE
:
572 case SCIC_SDS_REMOTE_NODE_CONTEXT_INVALIDATING_STATE
:
573 case SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE
:
574 if (sci_rnc
->destination_state
!= SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY
)
575 return SCI_FAILURE_INVALID_STATE
;
577 sci_rnc
->user_callback
= cb_fn
;
578 sci_rnc
->user_cookie
= cb_p
;
580 case SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE
: {
581 struct scic_sds_remote_device
*sci_dev
= rnc_to_dev(sci_rnc
);
582 struct domain_device
*dev
= sci_dev_to_domain(sci_dev
);
584 scic_sds_remote_node_context_setup_to_resume(sci_rnc
, cb_fn
, cb_p
);
586 /* TODO: consider adding a resume action of NONE, INVALIDATE, WRITE_TLCR */
587 if (dev
->dev_type
== SAS_END_DEV
|| dev_is_expander(dev
))
588 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
589 SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE
);
590 else if (dev
->dev_type
== SATA_DEV
|| (dev
->tproto
& SAS_PROTOCOL_STP
)) {
591 if (sci_dev
->is_direct_attached
) {
592 /* @todo Fix this since I am being silly in writing to the STPTLDARNI register. */
593 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
594 SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE
);
596 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
597 SCIC_SDS_REMOTE_NODE_CONTEXT_INVALIDATING_STATE
);
603 case SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE
:
604 scic_sds_remote_node_context_setup_to_resume(sci_rnc
, cb_fn
, cb_p
);
605 sci_base_state_machine_change_state(&sci_rnc
->state_machine
,
606 SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE
);
607 return SCI_FAILURE_INVALID_STATE
;
608 case SCIC_SDS_REMOTE_NODE_CONTEXT_AWAIT_SUSPENSION_STATE
:
609 scic_sds_remote_node_context_setup_to_resume(sci_rnc
, cb_fn
, cb_p
);
612 dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
613 "%s: invalid state %d\n", __func__
, state
);
614 return SCI_FAILURE_INVALID_STATE
;
618 enum sci_status
scic_sds_remote_node_context_start_io(struct scic_sds_remote_node_context
*sci_rnc
,
619 struct scic_sds_request
*sci_req
)
621 enum scis_sds_remote_node_context_states state
;
623 state
= sci_rnc
->state_machine
.current_state_id
;
624 if (state
!= SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
) {
625 dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
626 "%s: invalid state %d\n", __func__
, state
);
627 return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED
;
632 enum sci_status
scic_sds_remote_node_context_start_task(struct scic_sds_remote_node_context
*sci_rnc
,
633 struct scic_sds_request
*sci_req
)
635 enum scis_sds_remote_node_context_states state
;
637 state
= sci_rnc
->state_machine
.current_state_id
;
639 case SCIC_SDS_REMOTE_NODE_CONTEXT_RESUMING_STATE
:
640 case SCIC_SDS_REMOTE_NODE_CONTEXT_READY_STATE
:
641 case SCIC_SDS_REMOTE_NODE_CONTEXT_AWAIT_SUSPENSION_STATE
:
643 case SCIC_SDS_REMOTE_NODE_CONTEXT_TX_SUSPENDED_STATE
:
644 case SCIC_SDS_REMOTE_NODE_CONTEXT_TX_RX_SUSPENDED_STATE
:
645 scic_sds_remote_node_context_resume(sci_rnc
, NULL
, NULL
);
648 dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc
)),
649 "%s: invalid state %d\n", __func__
, state
);
650 return SCI_FAILURE_INVALID_STATE
;