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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. This is the
91 * 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 that
97 * the device is placed in when a RNC suspend is received by the SCU hardware.
99 SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_SUSPENDED,
102 * This is the final state that the device is placed in before a change to the
103 * base state machine.
105 SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_FINAL,
107 SCIC_SDS_SSP_REMOTE_DEVICE_READY_MAX_SUBSTATES
111 * enum SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATES -
113 * This is the enumeration for the struct scic_sds_remote_device ready substates for
114 * the STP remote device.
116 enum SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATES {
118 * This is the idle substate for the stp remote device. When there are no
119 * active IO for the device it is is in this state.
121 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
124 * This is the command state for for the STP remote device. This state is
125 * entered when the device is processing a non-NCQ command. The device object
126 * will fail any new start IO requests until this command is complete.
128 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
131 * This is the NCQ state for the STP remote device. This state is entered
132 * when the device is processing an NCQ reuqest. It will remain in this state
133 * so long as there is one or more NCQ requests being processed.
135 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ,
138 * This is the NCQ error state for the STP remote device. This state is
139 * entered when an SDB error FIS is received by the device object while in the
140 * NCQ state. The device object will only accept a READ LOG command while in
143 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR,
145 #if !defined(DISABLE_ATAPI)
147 * This is the ATAPI error state for the STP ATAPI remote device. This state is
148 * entered when ATAPI device sends error status FIS without data while the device
149 * object is in CMD state. A suspension event is expected in this state. The device
150 * object will resume right away.
152 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_ATAPI_ERROR,
156 * This is the READY substate indicates the device is waiting for the RESET task
157 * coming to be recovered from certain hardware specific error.
159 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET,
161 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.
171 enum SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATES {
173 * This is the ready operational substate for the remote device. This is the
174 * normal operational state for a remote device.
176 SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
179 * This is the suspended state for the remote device. This is the state that
180 * the device is placed in when a RNC suspend is received by the SCU hardware.
182 SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
184 SCIC_SDS_SMP_REMOTE_DEVICE_READY_MAX_SUBSTATES
191 * struct scic_sds_remote_device - This structure contains the data for an SCU
192 * implementation of the SCU Core device data.
196 struct scic_sds_remote_device {
198 * This field is the common base for all remote device objects.
200 struct sci_base_remote_device parent;
203 * This field is the programmed device port width. This value is written to
204 * the RCN data structure to tell the SCU how many open connections this
207 u32 device_port_width;
210 * This field is the programmed connection rate for this remote device. It is
211 * used to program the TC with the maximum allowed connection rate.
213 enum sci_sas_link_rate connection_rate;
216 * This field contains the allowed target protocols for this remote device.
218 struct smp_discover_response_protocols target_protocols;
221 * This field contains the device SAS address.
223 struct sci_sas_address device_address;
226 * This filed is assinged the value of true if the device is directly attached
229 bool is_direct_attached;
231 #if !defined(DISABLE_ATAPI)
233 * This filed is assinged the value of true if the device is an ATAPI device.
239 * This filed contains a pointer back to the port to which this device is
242 struct scic_sds_port *owning_port;
245 * This field contains the SCU silicon remote node context specific
248 struct scic_sds_remote_node_context *rnc;
251 * This field contains the stated request count for the remote device. The
252 * device can not reach the SCI_BASE_REMOTE_DEVICE_STATE_STOPPED until all
253 * requests are complete and the rnc_posted value is false.
255 u32 started_request_count;
258 * This field contains a pointer to the working request object. It is only
259 * used only for SATA requests since the unsolicited frames we get from the
260 * hardware have no Tag value to look up the io request object.
262 struct scic_sds_request *working_request;
265 * This field contains the reason for the remote device going not_ready. It is
266 * assigned in the state handlers and used in the state transition.
268 u32 not_ready_reason;
271 * This field is true if this remote device has an initialzied ready substate
272 * machine. SSP devices do not have a ready substate machine and STP devices
273 * have a ready substate machine.
275 bool has_ready_substate_machine;
278 * This field contains the state machine for the ready substate machine for
279 * this struct scic_sds_remote_device object.
281 struct sci_base_state_machine ready_substate_machine;
284 * This field maintains the set of state handlers for the remote device
285 * object. These are changed each time the remote device enters a new state.
287 struct scic_sds_remote_device_state_handler *state_handlers;
291 typedef enum sci_status (*SCIC_SDS_REMOTE_DEVICE_HANDLER_T)(
292 struct scic_sds_remote_device *this_device);
294 typedef enum sci_status (*SCIC_SDS_REMOTE_DEVICE_SUSPEND_HANDLER_T)(
295 struct scic_sds_remote_device *this_device,
298 typedef enum sci_status (*SCIC_SDS_REMOTE_DEVICE_RESUME_HANDLER_T)(
299 struct scic_sds_remote_device *this_device);
301 typedef enum sci_status (*SCIC_SDS_REMOTE_DEVICE_FRAME_HANDLER_T)(
302 struct scic_sds_remote_device *this_device,
305 typedef enum sci_status (*SCIC_SDS_REMOTE_DEVICE_EVENT_HANDLER_T)(
306 struct scic_sds_remote_device *this_device,
309 typedef void (*SCIC_SDS_REMOTE_DEVICE_READY_NOT_READY_HANDLER_T)(
310 struct scic_sds_remote_device *this_device);
313 * struct scic_sds_remote_device_state_handler - This structure conains the
314 * state handlers that are needed to process requests for the SCU remote
319 struct scic_sds_remote_device_state_handler {
320 struct sci_base_remote_device_state_handler parent;
322 SCIC_SDS_REMOTE_DEVICE_SUSPEND_HANDLER_T suspend_handler;
323 SCIC_SDS_REMOTE_DEVICE_RESUME_HANDLER_T resume_handler;
325 SCIC_SDS_REMOTE_DEVICE_EVENT_HANDLER_T event_handler;
326 SCIC_SDS_REMOTE_DEVICE_FRAME_HANDLER_T frame_handler;
331 extern const struct sci_base_state scic_sds_remote_device_state_table[];
332 extern const struct sci_base_state scic_sds_ssp_remote_device_ready_substate_table[];
333 extern const struct sci_base_state scic_sds_stp_remote_device_ready_substate_table[];
334 extern const struct sci_base_state scic_sds_smp_remote_device_ready_substate_table[];
336 extern struct scic_sds_remote_device_state_handler
337 scic_sds_remote_device_state_handler_table[];
338 extern struct scic_sds_remote_device_state_handler
339 scic_sds_ssp_remote_device_ready_substate_handler_table[];
340 extern struct scic_sds_remote_device_state_handler
341 scic_sds_stp_remote_device_ready_substate_handler_table[];
342 extern struct scic_sds_remote_device_state_handler
343 scic_sds_smp_remote_device_ready_substate_handler_table[];
346 * scic_sds_remote_device_increment_request_count() -
348 * This macro incrments the request count for this device
350 #define scic_sds_remote_device_increment_request_count(this_device) \
351 ((this_device)->started_request_count++)
354 * scic_sds_remote_device_decrement_request_count() -
356 * This macro decrements the request count for this device. This count will
357 * never decrment past 0.
359 #define scic_sds_remote_device_decrement_request_count(this_device) \
360 ((this_device)->started_request_count > 0 ? \
361 (this_device)->started_request_count-- : 0)
364 * scic_sds_remote_device_get_request_count() -
366 * This is a helper macro to return the current device request count.
368 #define scic_sds_remote_device_get_request_count(this_device) \
369 ((this_device)->started_request_count)
372 * scic_sds_remote_device_get_port() -
374 * This macro returns the owning port of this remote device obejct.
376 #define scic_sds_remote_device_get_port(this_device) \
377 ((this_device)->owning_port)
380 * scic_sds_remote_device_get_controller() -
382 * This macro returns the controller object that contains this device object
384 #define scic_sds_remote_device_get_controller(this_device) \
385 scic_sds_port_get_controller(scic_sds_remote_device_get_port(this_device))
388 * scic_sds_remote_device_set_state_handlers() -
390 * This macro sets the remote device state handlers pointer and is set on entry
391 * to each device state.
393 #define scic_sds_remote_device_set_state_handlers(this_device, handlers) \
394 ((this_device)->state_handlers = (handlers))
397 * scic_sds_remote_device_get_base_state_machine() -
399 * This macro returns the base sate machine object for the remote device.
401 #define scic_sds_remote_device_get_base_state_machine(this_device) \
402 (&(this_device)->parent.state_machine)
405 * scic_sds_remote_device_get_ready_substate_machine() -
407 * This macro returns the remote device ready substate machine
409 #define scic_sds_remote_device_get_ready_substate_machine(this_device) \
410 (&(this_device)->ready_substate_machine)
413 * scic_sds_remote_device_get_port() -
415 * This macro returns the owning port of this device
417 #define scic_sds_remote_device_get_port(this_device) \
418 ((this_device)->owning_port)
421 * scic_sds_remote_device_get_sequence() -
423 * This macro returns the remote device sequence value
425 #define scic_sds_remote_device_get_sequence(this_device) \
427 scic_sds_remote_device_get_controller(this_device)-> \
428 remote_device_sequence[(this_device)->rnc->remote_node_index] \
432 * scic_sds_remote_device_get_controller_peg() -
434 * This macro returns the controllers protocol engine group
436 #define scic_sds_remote_device_get_controller_peg(this_device) \
438 scic_sds_controller_get_protocol_engine_group(\
439 scic_sds_port_get_controller(\
440 scic_sds_remote_device_get_port(this_device) \
446 * scic_sds_remote_device_get_port_index() -
448 * This macro returns the port index for the devices owning port
450 #define scic_sds_remote_device_get_port_index(this_device) \
451 (scic_sds_port_get_index(scic_sds_remote_device_get_port(this_device)))
454 * scic_sds_remote_device_get_index() -
456 * This macro returns the remote node index for this device object
458 #define scic_sds_remote_device_get_index(this_device) \
459 ((this_device)->rnc->remote_node_index)
462 * scic_sds_remote_device_build_command_context() -
464 * This macro builds a remote device context for the SCU post request operation
466 #define scic_sds_remote_device_build_command_context(device, command) \
468 | (scic_sds_remote_device_get_controller_peg((device)) << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) \
469 | (scic_sds_remote_device_get_port_index((device)) << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) \
470 | (scic_sds_remote_device_get_index((device))) \
474 * scic_sds_remote_device_set_working_request() -
476 * This macro makes the working request assingment for the remote device
477 * object. To clear the working request use this macro with a NULL request
480 #define scic_sds_remote_device_set_working_request(device, request) \
481 ((device)->working_request = (request))
483 /* --------------------------------------------------------------------------- */
487 enum sci_status scic_sds_remote_device_frame_handler(
488 struct scic_sds_remote_device *this_device,
491 enum sci_status scic_sds_remote_device_event_handler(
492 struct scic_sds_remote_device *this_device,
495 enum sci_status scic_sds_remote_device_start_io(
496 struct scic_sds_controller *controller,
497 struct scic_sds_remote_device *this_device,
498 struct scic_sds_request *io_request);
500 enum sci_status scic_sds_remote_device_complete_io(
501 struct scic_sds_controller *controller,
502 struct scic_sds_remote_device *this_device,
503 struct scic_sds_request *io_request);
505 enum sci_status scic_sds_remote_device_resume(
506 struct scic_sds_remote_device *this_device);
508 enum sci_status scic_sds_remote_device_suspend(
509 struct scic_sds_remote_device *this_device,
512 enum sci_status scic_sds_remote_device_start_task(
513 struct scic_sds_controller *controller,
514 struct scic_sds_remote_device *this_device,
515 struct scic_sds_request *io_request);
517 void scic_sds_remote_device_post_request(
518 struct scic_sds_remote_device *this_device,
521 #if !defined(DISABLE_ATAPI)
522 bool scic_sds_remote_device_is_atapi(
523 struct scic_sds_remote_device *this_device);
524 #else /* !defined(DISABLE_ATAPI) */
525 #define scic_sds_remote_device_is_atapi(this_device) false
526 #endif /* !defined(DISABLE_ATAPI) */
528 /* --------------------------------------------------------------------------- */
530 /* --------------------------------------------------------------------------- */
532 void scic_sds_remote_device_start_request(
533 struct scic_sds_remote_device *this_device,
534 struct scic_sds_request *the_request,
535 enum sci_status status);
537 void scic_sds_remote_device_continue_request(
538 struct scic_sds_remote_device *this_device);
540 enum sci_status scic_sds_remote_device_default_start_handler(
541 struct sci_base_remote_device *this_device);
544 enum sci_status scic_sds_remote_device_default_fail_handler(
545 struct sci_base_remote_device *this_device);
547 enum sci_status scic_sds_remote_device_default_destruct_handler(
548 struct sci_base_remote_device *this_device);
550 enum sci_status scic_sds_remote_device_default_reset_handler(
551 struct sci_base_remote_device *device);
553 enum sci_status scic_sds_remote_device_default_reset_complete_handler(
554 struct sci_base_remote_device *device);
556 enum sci_status scic_sds_remote_device_default_start_request_handler(
557 struct sci_base_remote_device *device,
558 struct sci_base_request *request);
560 enum sci_status scic_sds_remote_device_default_complete_request_handler(
561 struct sci_base_remote_device *device,
562 struct sci_base_request *request);
564 enum sci_status scic_sds_remote_device_default_continue_request_handler(
565 struct sci_base_remote_device *device,
566 struct sci_base_request *request);
568 enum sci_status scic_sds_remote_device_default_suspend_handler(
569 struct scic_sds_remote_device *this_device,
572 enum sci_status scic_sds_remote_device_default_resume_handler(
573 struct scic_sds_remote_device *this_device);
576 enum sci_status scic_sds_remote_device_default_frame_handler(
577 struct scic_sds_remote_device *this_device,
580 /* --------------------------------------------------------------------------- */
582 enum sci_status scic_sds_remote_device_ready_state_stop_handler(
583 struct sci_base_remote_device *device);
585 enum sci_status scic_sds_remote_device_ready_state_reset_handler(
586 struct sci_base_remote_device *device);
588 enum sci_status scic_sds_remote_device_general_frame_handler(
589 struct scic_sds_remote_device *this_device,
592 enum sci_status scic_sds_remote_device_general_event_handler(
593 struct scic_sds_remote_device *this_device,
596 enum sci_status scic_sds_ssp_remote_device_ready_suspended_substate_resume_handler(
597 struct scic_sds_remote_device *this_device);
599 /* --------------------------------------------------------------------------- */
602 #endif /* _SCIC_SDS_REMOTE_DEVICE_H_ */