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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 "scu_remote_node_context.h"
69 #include "scic_sds_remote_node_context.h"
71 struct scic_sds_controller;
73 struct scic_sds_request;
74 struct scic_sds_remote_device_state_handler;
77 * enum scic_sds_ssp_remote_device_ready_substates -
79 * This is the enumeration of the ready substates for the
80 * struct scic_sds_remote_device.
82 enum scic_sds_ssp_remote_device_ready_substates {
84 * This is the initial state for the remote device ready substate.
86 SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_INITIAL,
89 * This is the ready operational substate for the remote device.
90 * This is the normal operational state for a remote device.
92 SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_OPERATIONAL,
95 * This is the suspended state for the remote device. This is the state
96 * that the device is placed in when a RNC suspend is received by
99 SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_SUSPENDED,
102 * This is the final state that the device is placed in before a change
103 * to the 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
114 * for 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,
163 * enum scic_sds_smp_remote_device_ready_substates -
165 * This is the enumeration of the ready substates for the SMP REMOTE DEVICE.
167 enum scic_sds_smp_remote_device_ready_substates {
169 * This is the ready operational substate for the remote device. This is the
170 * normal operational state for a remote device.
172 SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
175 * This is the suspended state for the remote device. This is the state that
176 * the device is placed in when a RNC suspend is received by the SCU hardware.
178 SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
182 * struct scic_sds_remote_device - This structure contains the data for an SCU
183 * implementation of the SCU Core device data.
187 struct scic_sds_remote_device {
189 * This field is the common base for all remote device objects.
191 struct sci_base_remote_device parent;
194 * This field is the programmed device port width. This value is written to
195 * the RCN data structure to tell the SCU how many open connections this
198 u32 device_port_width;
201 * This field is the programmed connection rate for this remote device. It is
202 * used to program the TC with the maximum allowed connection rate.
204 enum sci_sas_link_rate connection_rate;
207 * This field contains the allowed target protocols for this remote device.
209 struct smp_discover_response_protocols target_protocols;
212 * This field contains the device SAS address.
214 struct sci_sas_address device_address;
217 * This filed is assinged the value of true if the device is directly
218 * attached to the port.
220 bool is_direct_attached;
222 #if !defined(DISABLE_ATAPI)
224 * This filed is assinged the value of true if the device is an ATAPI
231 * This filed contains a pointer back to the port to which this device
234 struct scic_sds_port *owning_port;
237 * This field contains the SCU silicon remote node context specific
240 struct scic_sds_remote_node_context *rnc;
243 * This field contains the stated request count for the remote device. The
244 * device can not reach the SCI_BASE_REMOTE_DEVICE_STATE_STOPPED until all
245 * requests are complete and the rnc_posted value is false.
247 u32 started_request_count;
250 * This field contains a pointer to the working request object. It is only
251 * used only for SATA requests since the unsolicited frames we get from the
252 * hardware have no Tag value to look up the io request object.
254 struct scic_sds_request *working_request;
257 * This field contains the reason for the remote device going not_ready. It is
258 * assigned in the state handlers and used in the state transition.
260 u32 not_ready_reason;
263 * This field is true if this remote device has an initialzied ready substate
264 * machine. SSP devices do not have a ready substate machine and STP devices
265 * have a ready substate machine.
267 bool has_ready_substate_machine;
270 * This field contains the state machine for the ready substate machine for
271 * this struct scic_sds_remote_device object.
273 struct sci_base_state_machine ready_substate_machine;
276 * This field maintains the set of state handlers for the remote device
277 * object. These are changed each time the remote device enters a new state.
279 const struct scic_sds_remote_device_state_handler *state_handlers;
282 typedef enum sci_status (*scic_sds_remote_device_handler_t)(
283 struct scic_sds_remote_device *this_device);
285 typedef enum sci_status (*scic_sds_remote_device_suspend_handler_t)(
286 struct scic_sds_remote_device *this_device,
289 typedef enum sci_status (*scic_sds_remote_device_resume_handler_t)(
290 struct scic_sds_remote_device *this_device);
292 typedef enum sci_status (*scic_sds_remote_device_frame_handler_t)(
293 struct scic_sds_remote_device *this_device,
296 typedef enum sci_status (*scic_sds_remote_device_event_handler_t)(
297 struct scic_sds_remote_device *this_device,
300 typedef void (*scic_sds_remote_device_ready_not_ready_handler_t)(
301 struct scic_sds_remote_device *this_device);
304 * struct scic_sds_remote_device_state_handler - This structure conains the
305 * state handlers that are needed to process requests for the SCU remote
310 struct scic_sds_remote_device_state_handler {
311 struct sci_base_remote_device_state_handler parent;
312 scic_sds_remote_device_suspend_handler_t suspend_handler;
313 scic_sds_remote_device_resume_handler_t resume_handler;
314 scic_sds_remote_device_event_handler_t event_handler;
315 scic_sds_remote_device_frame_handler_t frame_handler;
318 extern const struct sci_base_state scic_sds_ssp_remote_device_ready_substate_table[];
319 extern const struct sci_base_state scic_sds_stp_remote_device_ready_substate_table[];
320 extern const struct sci_base_state scic_sds_smp_remote_device_ready_substate_table[];
323 * scic_sds_remote_device_increment_request_count() -
325 * This macro incrments the request count for this device
327 #define scic_sds_remote_device_increment_request_count(this_device) \
328 ((this_device)->started_request_count++)
331 * scic_sds_remote_device_decrement_request_count() -
333 * This macro decrements the request count for this device. This count will
334 * never decrment past 0.
336 #define scic_sds_remote_device_decrement_request_count(this_device) \
337 ((this_device)->started_request_count > 0 ? \
338 (this_device)->started_request_count-- : 0)
341 * scic_sds_remote_device_get_request_count() -
343 * This is a helper macro to return the current device request count.
345 #define scic_sds_remote_device_get_request_count(this_device) \
346 ((this_device)->started_request_count)
349 * scic_sds_remote_device_get_port() -
351 * This macro returns the owning port of this remote device obejct.
353 #define scic_sds_remote_device_get_port(this_device) \
354 ((this_device)->owning_port)
357 * scic_sds_remote_device_get_controller() -
359 * This macro returns the controller object that contains this device object
361 #define scic_sds_remote_device_get_controller(this_device) \
362 scic_sds_port_get_controller(scic_sds_remote_device_get_port(this_device))
365 * scic_sds_remote_device_set_state_handlers() -
367 * This macro sets the remote device state handlers pointer and is set on entry
368 * to each device state.
370 #define scic_sds_remote_device_set_state_handlers(this_device, handlers) \
371 ((this_device)->state_handlers = (handlers))
374 * scic_sds_remote_device_get_port() -
376 * This macro returns the owning port of this device
378 #define scic_sds_remote_device_get_port(this_device) \
379 ((this_device)->owning_port)
382 * scic_sds_remote_device_get_sequence() -
384 * This macro returns the remote device sequence value
386 #define scic_sds_remote_device_get_sequence(this_device) \
388 scic_sds_remote_device_get_controller(this_device)-> \
389 remote_device_sequence[(this_device)->rnc->remote_node_index] \
393 * scic_sds_remote_device_get_controller_peg() -
395 * This macro returns the controllers protocol engine group
397 #define scic_sds_remote_device_get_controller_peg(this_device) \
399 scic_sds_controller_get_protocol_engine_group(\
400 scic_sds_port_get_controller(\
401 scic_sds_remote_device_get_port(this_device) \
407 * scic_sds_remote_device_get_port_index() -
409 * This macro returns the port index for the devices owning port
411 #define scic_sds_remote_device_get_port_index(this_device) \
412 (scic_sds_port_get_index(scic_sds_remote_device_get_port(this_device)))
415 * scic_sds_remote_device_get_index() -
417 * This macro returns the remote node index for this device object
419 #define scic_sds_remote_device_get_index(this_device) \
420 ((this_device)->rnc->remote_node_index)
423 * scic_sds_remote_device_build_command_context() -
425 * This macro builds a remote device context for the SCU post request operation
427 #define scic_sds_remote_device_build_command_context(device, command) \
429 | (scic_sds_remote_device_get_controller_peg((device)) << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) \
430 | (scic_sds_remote_device_get_port_index((device)) << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) \
431 | (scic_sds_remote_device_get_index((device))) \
435 * scic_sds_remote_device_set_working_request() -
437 * This macro makes the working request assingment for the remote device
438 * object. To clear the working request use this macro with a NULL request
441 #define scic_sds_remote_device_set_working_request(device, request) \
442 ((device)->working_request = (request))
444 enum sci_status scic_sds_remote_device_frame_handler(
445 struct scic_sds_remote_device *this_device,
448 enum sci_status scic_sds_remote_device_event_handler(
449 struct scic_sds_remote_device *this_device,
452 enum sci_status scic_sds_remote_device_start_io(
453 struct scic_sds_controller *controller,
454 struct scic_sds_remote_device *this_device,
455 struct scic_sds_request *io_request);
457 enum sci_status scic_sds_remote_device_complete_io(
458 struct scic_sds_controller *controller,
459 struct scic_sds_remote_device *this_device,
460 struct scic_sds_request *io_request);
462 enum sci_status scic_sds_remote_device_resume(
463 struct scic_sds_remote_device *this_device);
465 enum sci_status scic_sds_remote_device_suspend(
466 struct scic_sds_remote_device *this_device,
469 enum sci_status scic_sds_remote_device_start_task(
470 struct scic_sds_controller *controller,
471 struct scic_sds_remote_device *this_device,
472 struct scic_sds_request *io_request);
474 void scic_sds_remote_device_post_request(
475 struct scic_sds_remote_device *this_device,
478 #if !defined(DISABLE_ATAPI)
479 bool scic_sds_remote_device_is_atapi(
480 struct scic_sds_remote_device *this_device);
481 #else /* !defined(DISABLE_ATAPI) */
482 #define scic_sds_remote_device_is_atapi(this_device) false
483 #endif /* !defined(DISABLE_ATAPI) */
485 void scic_sds_remote_device_start_request(
486 struct scic_sds_remote_device *this_device,
487 struct scic_sds_request *the_request,
488 enum sci_status status);
490 void scic_sds_remote_device_continue_request(void *sci_dev);
492 enum sci_status scic_sds_remote_device_default_start_handler(
493 struct sci_base_remote_device *this_device);
495 enum sci_status scic_sds_remote_device_default_fail_handler(
496 struct sci_base_remote_device *this_device);
498 enum sci_status scic_sds_remote_device_default_destruct_handler(
499 struct sci_base_remote_device *this_device);
501 enum sci_status scic_sds_remote_device_default_reset_handler(
502 struct sci_base_remote_device *device);
504 enum sci_status scic_sds_remote_device_default_reset_complete_handler(
505 struct sci_base_remote_device *device);
507 enum sci_status scic_sds_remote_device_default_start_request_handler(
508 struct sci_base_remote_device *device,
509 struct scic_sds_request *request);
511 enum sci_status scic_sds_remote_device_default_complete_request_handler(
512 struct sci_base_remote_device *device,
513 struct scic_sds_request *request);
515 enum sci_status scic_sds_remote_device_default_continue_request_handler(
516 struct sci_base_remote_device *device,
517 struct scic_sds_request *request);
519 enum sci_status scic_sds_remote_device_default_suspend_handler(
520 struct scic_sds_remote_device *this_device,
523 enum sci_status scic_sds_remote_device_default_resume_handler(
524 struct scic_sds_remote_device *this_device);
527 enum sci_status scic_sds_remote_device_default_frame_handler(
528 struct scic_sds_remote_device *this_device,
531 enum sci_status scic_sds_remote_device_ready_state_stop_handler(
532 struct sci_base_remote_device *device);
534 enum sci_status scic_sds_remote_device_ready_state_reset_handler(
535 struct sci_base_remote_device *device);
537 enum sci_status scic_sds_remote_device_general_frame_handler(
538 struct scic_sds_remote_device *this_device,
541 enum sci_status scic_sds_remote_device_general_event_handler(
542 struct scic_sds_remote_device *this_device,
545 enum sci_status scic_sds_ssp_remote_device_ready_suspended_substate_resume_handler(
546 struct scic_sds_remote_device *this_device);
548 #endif /* _SCIC_SDS_REMOTE_DEVICE_H_ */