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56 #ifndef _SCIC_SDS_REMOTE_DEVICE_H_
57 #define _SCIC_SDS_REMOTE_DEVICE_H_
60 * This file contains the structures, constants, and prototypes for the
61 * struct scic_sds_remote_device object.
66 #include "intel_sas.h"
67 #include "sci_base_remote_device.h"
68 #include "sci_base_request.h"
69 #include "scu_remote_node_context.h"
70 #include "scic_sds_remote_node_context.h"
72 struct scic_sds_controller;
74 struct scic_sds_request;
75 struct scic_sds_remote_device_state_handler;
78 * enum scic_sds_ssp_remote_device_ready_substates -
80 * This is the enumeration of the ready substates for the
81 * struct scic_sds_remote_device.
83 enum scic_sds_ssp_remote_device_ready_substates {
85 * This is the initial state for the remote device ready substate.
87 SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_INITIAL,
90 * This is the ready operational substate for the remote device.
91 * This is the normal operational state for a remote device.
93 SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_OPERATIONAL,
96 * This is the suspended state for the remote device. This is the state
97 * that the device is placed in when a RNC suspend is received by
100 SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_SUSPENDED,
103 * This is the final state that the device is placed in before a change
104 * to the base state machine.
106 SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_FINAL,
108 SCIC_SDS_SSP_REMOTE_DEVICE_READY_MAX_SUBSTATES
112 * enum scic_sds_stp_remote_device_ready_substates -
114 * This is the enumeration for the struct scic_sds_remote_device ready substates
115 * for the STP remote device.
117 enum scic_sds_stp_remote_device_ready_substates {
119 * This is the idle substate for the stp remote device. When there are no
120 * active IO for the device it is is in this state.
122 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
125 * This is the command state for for the STP remote device. This state is
126 * entered when the device is processing a non-NCQ command. The device object
127 * will fail any new start IO requests until this command is complete.
129 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
132 * This is the NCQ state for the STP remote device. This state is entered
133 * when the device is processing an NCQ reuqest. It will remain in this state
134 * so long as there is one or more NCQ requests being processed.
136 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ,
139 * This is the NCQ error state for the STP remote device. This state is
140 * entered when an SDB error FIS is received by the device object while in the
141 * NCQ state. The device object will only accept a READ LOG command while in
144 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR,
146 #if !defined(DISABLE_ATAPI)
148 * This is the ATAPI error state for the STP ATAPI remote device. This state is
149 * entered when ATAPI device sends error status FIS without data while the device
150 * object is in CMD state. A suspension event is expected in this state. The device
151 * object will resume right away.
153 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_ATAPI_ERROR,
157 * This is the READY substate indicates the device is waiting for the RESET task
158 * coming to be recovered from certain hardware specific error.
160 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET,
162 SCIC_SDS_STP_REMOTE_DEVICE_READY_MAX_SUBSTATES
166 * enum scic_sds_smp_remote_device_ready_substates -
168 * This is the enumeration of the ready substates for the SMP REMOTE DEVICE.
170 enum scic_sds_smp_remote_device_ready_substates {
172 * This is the ready operational substate for the remote device. This is the
173 * normal operational state for a remote device.
175 SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
178 * This is the suspended state for the remote device. This is the state that
179 * the device is placed in when a RNC suspend is received by the SCU hardware.
181 SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
183 SCIC_SDS_SMP_REMOTE_DEVICE_READY_MAX_SUBSTATES
187 * struct scic_sds_remote_device - This structure contains the data for an SCU
188 * implementation of the SCU Core device data.
192 struct scic_sds_remote_device {
194 * This field is the common base for all remote device objects.
196 struct sci_base_remote_device parent;
199 * This field is the programmed device port width. This value is written to
200 * the RCN data structure to tell the SCU how many open connections this
203 u32 device_port_width;
206 * This field is the programmed connection rate for this remote device. It is
207 * used to program the TC with the maximum allowed connection rate.
209 enum sci_sas_link_rate connection_rate;
212 * This field contains the allowed target protocols for this remote device.
214 struct smp_discover_response_protocols target_protocols;
217 * This field contains the device SAS address.
219 struct sci_sas_address device_address;
222 * This filed is assinged the value of true if the device is directly
223 * attached to the port.
225 bool is_direct_attached;
227 #if !defined(DISABLE_ATAPI)
229 * This filed is assinged the value of true if the device is an ATAPI
236 * This filed contains a pointer back to the port to which this device
239 struct scic_sds_port *owning_port;
242 * This field contains the SCU silicon remote node context specific
245 struct scic_sds_remote_node_context *rnc;
248 * This field contains the stated request count for the remote device. The
249 * device can not reach the SCI_BASE_REMOTE_DEVICE_STATE_STOPPED until all
250 * requests are complete and the rnc_posted value is false.
252 u32 started_request_count;
255 * This field contains a pointer to the working request object. It is only
256 * used only for SATA requests since the unsolicited frames we get from the
257 * hardware have no Tag value to look up the io request object.
259 struct scic_sds_request *working_request;
262 * This field contains the reason for the remote device going not_ready. It is
263 * assigned in the state handlers and used in the state transition.
265 u32 not_ready_reason;
268 * This field is true if this remote device has an initialzied ready substate
269 * machine. SSP devices do not have a ready substate machine and STP devices
270 * have a ready substate machine.
272 bool has_ready_substate_machine;
275 * This field contains the state machine for the ready substate machine for
276 * this struct scic_sds_remote_device object.
278 struct sci_base_state_machine ready_substate_machine;
281 * This field maintains the set of state handlers for the remote device
282 * object. These are changed each time the remote device enters a new state.
284 const struct scic_sds_remote_device_state_handler *state_handlers;
287 typedef enum sci_status (*scic_sds_remote_device_handler_t)(
288 struct scic_sds_remote_device *this_device);
290 typedef enum sci_status (*scic_sds_remote_device_suspend_handler_t)(
291 struct scic_sds_remote_device *this_device,
294 typedef enum sci_status (*scic_sds_remote_device_resume_handler_t)(
295 struct scic_sds_remote_device *this_device);
297 typedef enum sci_status (*scic_sds_remote_device_frame_handler_t)(
298 struct scic_sds_remote_device *this_device,
301 typedef enum sci_status (*scic_sds_remote_device_event_handler_t)(
302 struct scic_sds_remote_device *this_device,
305 typedef void (*scic_sds_remote_device_ready_not_ready_handler_t)(
306 struct scic_sds_remote_device *this_device);
309 * struct scic_sds_remote_device_state_handler - This structure conains the
310 * state handlers that are needed to process requests for the SCU remote
315 struct scic_sds_remote_device_state_handler {
316 struct sci_base_remote_device_state_handler parent;
317 scic_sds_remote_device_suspend_handler_t suspend_handler;
318 scic_sds_remote_device_resume_handler_t resume_handler;
319 scic_sds_remote_device_event_handler_t event_handler;
320 scic_sds_remote_device_frame_handler_t frame_handler;
323 extern const struct sci_base_state scic_sds_remote_device_state_table[];
324 extern const struct sci_base_state scic_sds_ssp_remote_device_ready_substate_table[];
325 extern const struct sci_base_state scic_sds_stp_remote_device_ready_substate_table[];
326 extern const struct sci_base_state scic_sds_smp_remote_device_ready_substate_table[];
328 extern const struct scic_sds_remote_device_state_handler scic_sds_remote_device_state_handler_table[];
329 extern struct scic_sds_remote_device_state_handler
330 scic_sds_ssp_remote_device_ready_substate_handler_table[];
331 extern struct scic_sds_remote_device_state_handler
332 scic_sds_stp_remote_device_ready_substate_handler_table[];
333 extern struct scic_sds_remote_device_state_handler
334 scic_sds_smp_remote_device_ready_substate_handler_table[];
337 * scic_sds_remote_device_increment_request_count() -
339 * This macro incrments the request count for this device
341 #define scic_sds_remote_device_increment_request_count(this_device) \
342 ((this_device)->started_request_count++)
345 * scic_sds_remote_device_decrement_request_count() -
347 * This macro decrements the request count for this device. This count will
348 * never decrment past 0.
350 #define scic_sds_remote_device_decrement_request_count(this_device) \
351 ((this_device)->started_request_count > 0 ? \
352 (this_device)->started_request_count-- : 0)
355 * scic_sds_remote_device_get_request_count() -
357 * This is a helper macro to return the current device request count.
359 #define scic_sds_remote_device_get_request_count(this_device) \
360 ((this_device)->started_request_count)
363 * scic_sds_remote_device_get_port() -
365 * This macro returns the owning port of this remote device obejct.
367 #define scic_sds_remote_device_get_port(this_device) \
368 ((this_device)->owning_port)
371 * scic_sds_remote_device_get_controller() -
373 * This macro returns the controller object that contains this device object
375 #define scic_sds_remote_device_get_controller(this_device) \
376 scic_sds_port_get_controller(scic_sds_remote_device_get_port(this_device))
379 * scic_sds_remote_device_set_state_handlers() -
381 * This macro sets the remote device state handlers pointer and is set on entry
382 * to each device state.
384 #define scic_sds_remote_device_set_state_handlers(this_device, handlers) \
385 ((this_device)->state_handlers = (handlers))
388 * scic_sds_remote_device_get_base_state_machine() -
390 * This macro returns the base sate machine object for the remote device.
392 #define scic_sds_remote_device_get_base_state_machine(this_device) \
393 (&(this_device)->parent.state_machine)
396 * scic_sds_remote_device_get_ready_substate_machine() -
398 * This macro returns the remote device ready substate machine
400 #define scic_sds_remote_device_get_ready_substate_machine(this_device) \
401 (&(this_device)->ready_substate_machine)
404 * scic_sds_remote_device_get_port() -
406 * This macro returns the owning port of this device
408 #define scic_sds_remote_device_get_port(this_device) \
409 ((this_device)->owning_port)
412 * scic_sds_remote_device_get_sequence() -
414 * This macro returns the remote device sequence value
416 #define scic_sds_remote_device_get_sequence(this_device) \
418 scic_sds_remote_device_get_controller(this_device)-> \
419 remote_device_sequence[(this_device)->rnc->remote_node_index] \
423 * scic_sds_remote_device_get_controller_peg() -
425 * This macro returns the controllers protocol engine group
427 #define scic_sds_remote_device_get_controller_peg(this_device) \
429 scic_sds_controller_get_protocol_engine_group(\
430 scic_sds_port_get_controller(\
431 scic_sds_remote_device_get_port(this_device) \
437 * scic_sds_remote_device_get_port_index() -
439 * This macro returns the port index for the devices owning port
441 #define scic_sds_remote_device_get_port_index(this_device) \
442 (scic_sds_port_get_index(scic_sds_remote_device_get_port(this_device)))
445 * scic_sds_remote_device_get_index() -
447 * This macro returns the remote node index for this device object
449 #define scic_sds_remote_device_get_index(this_device) \
450 ((this_device)->rnc->remote_node_index)
453 * scic_sds_remote_device_build_command_context() -
455 * This macro builds a remote device context for the SCU post request operation
457 #define scic_sds_remote_device_build_command_context(device, command) \
459 | (scic_sds_remote_device_get_controller_peg((device)) << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) \
460 | (scic_sds_remote_device_get_port_index((device)) << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) \
461 | (scic_sds_remote_device_get_index((device))) \
465 * scic_sds_remote_device_set_working_request() -
467 * This macro makes the working request assingment for the remote device
468 * object. To clear the working request use this macro with a NULL request
471 #define scic_sds_remote_device_set_working_request(device, request) \
472 ((device)->working_request = (request))
474 enum sci_status scic_sds_remote_device_frame_handler(
475 struct scic_sds_remote_device *this_device,
478 enum sci_status scic_sds_remote_device_event_handler(
479 struct scic_sds_remote_device *this_device,
482 enum sci_status scic_sds_remote_device_start_io(
483 struct scic_sds_controller *controller,
484 struct scic_sds_remote_device *this_device,
485 struct scic_sds_request *io_request);
487 enum sci_status scic_sds_remote_device_complete_io(
488 struct scic_sds_controller *controller,
489 struct scic_sds_remote_device *this_device,
490 struct scic_sds_request *io_request);
492 enum sci_status scic_sds_remote_device_resume(
493 struct scic_sds_remote_device *this_device);
495 enum sci_status scic_sds_remote_device_suspend(
496 struct scic_sds_remote_device *this_device,
499 enum sci_status scic_sds_remote_device_start_task(
500 struct scic_sds_controller *controller,
501 struct scic_sds_remote_device *this_device,
502 struct scic_sds_request *io_request);
504 void scic_sds_remote_device_post_request(
505 struct scic_sds_remote_device *this_device,
508 #if !defined(DISABLE_ATAPI)
509 bool scic_sds_remote_device_is_atapi(
510 struct scic_sds_remote_device *this_device);
511 #else /* !defined(DISABLE_ATAPI) */
512 #define scic_sds_remote_device_is_atapi(this_device) false
513 #endif /* !defined(DISABLE_ATAPI) */
515 void scic_sds_remote_device_start_request(
516 struct scic_sds_remote_device *this_device,
517 struct scic_sds_request *the_request,
518 enum sci_status status);
520 void scic_sds_remote_device_continue_request(
521 struct scic_sds_remote_device *this_device);
523 enum sci_status scic_sds_remote_device_default_start_handler(
524 struct sci_base_remote_device *this_device);
526 enum sci_status scic_sds_remote_device_default_fail_handler(
527 struct sci_base_remote_device *this_device);
529 enum sci_status scic_sds_remote_device_default_destruct_handler(
530 struct sci_base_remote_device *this_device);
532 enum sci_status scic_sds_remote_device_default_reset_handler(
533 struct sci_base_remote_device *device);
535 enum sci_status scic_sds_remote_device_default_reset_complete_handler(
536 struct sci_base_remote_device *device);
538 enum sci_status scic_sds_remote_device_default_start_request_handler(
539 struct sci_base_remote_device *device,
540 struct sci_base_request *request);
542 enum sci_status scic_sds_remote_device_default_complete_request_handler(
543 struct sci_base_remote_device *device,
544 struct sci_base_request *request);
546 enum sci_status scic_sds_remote_device_default_continue_request_handler(
547 struct sci_base_remote_device *device,
548 struct sci_base_request *request);
550 enum sci_status scic_sds_remote_device_default_suspend_handler(
551 struct scic_sds_remote_device *this_device,
554 enum sci_status scic_sds_remote_device_default_resume_handler(
555 struct scic_sds_remote_device *this_device);
558 enum sci_status scic_sds_remote_device_default_frame_handler(
559 struct scic_sds_remote_device *this_device,
562 enum sci_status scic_sds_remote_device_ready_state_stop_handler(
563 struct sci_base_remote_device *device);
565 enum sci_status scic_sds_remote_device_ready_state_reset_handler(
566 struct sci_base_remote_device *device);
568 enum sci_status scic_sds_remote_device_general_frame_handler(
569 struct scic_sds_remote_device *this_device,
572 enum sci_status scic_sds_remote_device_general_event_handler(
573 struct scic_sds_remote_device *this_device,
576 enum sci_status scic_sds_ssp_remote_device_ready_suspended_substate_resume_handler(
577 struct scic_sds_remote_device *this_device);
579 #endif /* _SCIC_SDS_REMOTE_DEVICE_H_ */