hwtracing/intel_th/gth.c

25  * struct gth_output - GTH view on an output port
27  * @output:	link to output device's output descriptor
28  * @index:	output port number
30  * @master:	bitmap of masters configured for this output
34 	struct intel_th_output	*output;
44  * @output_group:	attributes describing output ports
46  * @output:		output ports
47  * @master:		master/output port assignments
56 	struct gth_output	output[TH_POSSIBLE_OUTPUTS];
181 	/* disconnect from the previous output port, if any */
185 		clear_bit(ma->master, gth->output[old_port].master);
191 		if (gth->output[old_port].output->active)
195 	/* connect to the new output port, if any */
198 		if (!gth->output[port].output) {
203 		set_bit(ma->master, gth->output[port].master);
206 		if (gth->output[port].output->active)
242 	OUTPUT_PARM(port,	0x7,	1, 0, output),
243 	OUTPUT_PARM(null,	BIT(3),	1, 1, output),
244 	OUTPUT_PARM(drop,	BIT(4),	1, 1, output),
245 	OUTPUT_PARM(reset,	BIT(5),	1, 0, output),
246 	OUTPUT_PARM(flush,	BIT(7),	0, 1, output),
291 	/* output ports */
465  * intel_th_gth_stop() - stop tracing to an output device
467  * @output:		output device's descriptor
471  * pipelines to be empty for the corresponding output port.
474 			      struct intel_th_output *output,
478 		container_of(output, struct intel_th_device, output);
490 	     count && !(reg & BIT(output->port)); count--) {
497 			output->port);
499 	/* wait on output piepline empty */
508  * intel_th_gth_start() - start tracing to an output device
510  * @output:	output device's descriptor
515 			       struct intel_th_output *output)
519 	if (output->multiblock)
527  * intel_th_gth_disable() - disable tracing to an output device
529  * @output:	output device's descriptor
531  * This will deconfigure all masters set to output to this device,
533  * "pipeline empty" bit for corresponding output port.
536 				 struct intel_th_output *output)
543 	output->active = false;
545 	for_each_set_bit(master, gth->output[output->port].master,
551 	intel_th_gth_stop(gth, output, true);
554 	reg &= ~output->scratchpad;
568 				 struct intel_th_output *output)
574 	 * Wait until the output port is in reset before we start
578 	     count && !(gth_output_get(gth, output->port) & BIT(5)); count--)
583  * intel_th_gth_enable() - enable tracing to an output device
585  * @output:	output device's descriptor
587  * This will configure all masters set to output to this device and
591 				struct intel_th_output *output)
599 	for_each_set_bit(master, gth->output[output->port].master,
601 		gth_master_set(gth, master, output->port);
604 	output->active = true;
611 	scrpd |= output->scratchpad;
614 	intel_th_gth_start(gth, output);
620  * @output:	output device's descriptor
626 				struct intel_th_output *output)
647 	intel_th_gth_stop(gth, output, false);
648 	intel_th_gth_start(gth, output);
652  * intel_th_gth_assign() - assign output device to a GTH output port
654  * @othdev:	output device
656  * This will match a given output device parameters against present
657  * output ports on the GTH and fill out relevant bits in output device's
675 		if (gth->output[i].port_type != othdev->output.type)
688 	othdev->output.port = i;
689 	othdev->output.active = false;
690 	gth->output[i].output = &othdev->output;
697  * intel_th_gth_unassign() - deassociate an output device from its output port
699  * @othdev:	output device
705 	int port = othdev->output.port;
712 	othdev->output.port = -1;
713 	othdev->output.active = false;
714 	gth->output[port].output = NULL;
725 	int port = 0; /* FIXME: make default output configurable */
736 		set_bit(master, gth->output[port].master);
774 	 * capture configuration attributes. Also, refuse to assign output
794 		gth->output[i].gth = gth;
795 		gth->output[i].index = i;
796 		gth->output[i].port_type =
798 		if (gth->output[i].port_type == GTH_NONE)
801 		ret = intel_th_output_enable(th, gth->output[i].port_type);