1 // SPDX-License-Identifier: GPL-2.0-only
45  * struct _thermal_state - Represent the current thermal event state
52  *				or power threshold interrupts.
54  *				or power threshold interrupts.
61  *				This is used for the purpose of rate-control.
142 	unsigned int cpu = dev->id;					\
248 	get_therm_status(state->level, &hot, &temp);  in throttle_active_work()
250 	if (!hot && temp > state->baseline_temp) {  in throttle_active_work()
251 		if (state->rate_control_active)  in throttle_active_work()
254 				state->level == CORE_LEVEL ? "Core" : "Package",  in throttle_active_work()
255 				state->count);  in throttle_active_work()
257 		state->rate_control_active = false;  in throttle_active_work()
261 	if (time_before64(now, state->next_check) &&  in throttle_active_work()
262 			  state->rate_control_active)  in throttle_active_work()
265 	state->next_check = now + CHECK_INTERVAL;  in throttle_active_work()
267 	if (state->count != state->last_count) {  in throttle_active_work()
269 		state->last_count = state->count;  in throttle_active_work()
270 		state->average = 0;  in throttle_active_work()
271 		state->sample_count = 0;  in throttle_active_work()
272 		state->sample_index = 0;  in throttle_active_work()
275 	state->temp_samples[state->sample_index] = temp;  in throttle_active_work()
276 	state->sample_count++;  in throttle_active_work()
277 	state->sample_index = (state->sample_index + 1) % ARRAY_SIZE(state->temp_samples);  in throttle_active_work()
278 	if (state->sample_count < ARRAY_SIZE(state->temp_samples))  in throttle_active_work()
282 	for (i = 0; i < ARRAY_SIZE(state->temp_samples); ++i)  in throttle_active_work()
283 		avg += state->temp_samples[i];  in throttle_active_work()
285 	avg /= ARRAY_SIZE(state->temp_samples);  in throttle_active_work()
287 	if (state->average > avg) {  in throttle_active_work()
290 			state->level == CORE_LEVEL ? "Core" : "Package",  in throttle_active_work()
291 			state->count);  in throttle_active_work()
292 		state->rate_control_active = true;  in throttle_active_work()
295 	state->average = avg;  in throttle_active_work()
298 	clear_therm_status_log(state->level);  in throttle_active_work()
299 	schedule_delayed_work_on(this_cpu, &state->therm_work, THERM_THROT_POLL_INTERVAL);  in throttle_active_work()
303  * therm_throt_process - Process thermal throttling event from interrupt
324 			state = &pstate->core_throttle;  in therm_throt_process()
326 			state = &pstate->core_power_limit;  in therm_throt_process()
331 			state = &pstate->package_throttle;  in therm_throt_process()
333 			state = &pstate->package_power_limit;  in therm_throt_process()
339 	old_event = state->new_event;  in therm_throt_process()
340 	state->new_event = new_event;  in therm_throt_process()
343 		state->count++;  in therm_throt_process()
348 	if (new_event && !state->last_interrupt_time) {  in therm_throt_process()
352 		get_therm_status(state->level, &hot, &temp);  in therm_throt_process()
361 		state->baseline_temp = temp;  in therm_throt_process()
362 		state->last_interrupt_time = now;  in therm_throt_process()
363 		schedule_delayed_work_on(this_cpu, &state->therm_work, THERM_THROT_POLL_INTERVAL);  in therm_throt_process()
364 	} else if (old_event && state->last_interrupt_time) {  in therm_throt_process()
367 		throttle_time = jiffies_delta_to_msecs(now - state->last_interrupt_time);  in therm_throt_process()
368 		if (throttle_time > state->max_time_ms)  in therm_throt_process()
369 			state->max_time_ms = throttle_time;  in therm_throt_process()
370 		state->total_time_ms += throttle_time;  in therm_throt_process()
371 		state->last_interrupt_time = 0;  in therm_throt_process()
383 		state = (event == 0) ? &pstate->pkg_thresh0 :  in thresh_event_valid()
384 						&pstate->pkg_thresh1;  in thresh_event_valid()
386 		state = (event == 0) ? &pstate->core_thresh0 :  in thresh_event_valid()
387 						&pstate->core_thresh1;  in thresh_event_valid()
389 	if (time_before64(now, state->next_check))  in thresh_event_valid()
392 	state->next_check = now + CHECK_INTERVAL;  in thresh_event_valid()
413 	err = sysfs_create_group(&dev->kobj, &thermal_attr_group);  in thermal_throttle_add_dev()
418 		err = sysfs_add_file_to_group(&dev->kobj,  in thermal_throttle_add_dev()
426 		err = sysfs_add_file_to_group(&dev->kobj,  in thermal_throttle_add_dev()
432 		err = sysfs_add_file_to_group(&dev->kobj,  in thermal_throttle_add_dev()
438 		err = sysfs_add_file_to_group(&dev->kobj,  in thermal_throttle_add_dev()
445 			err = sysfs_add_file_to_group(&dev->kobj,  in thermal_throttle_add_dev()
456 	sysfs_remove_group(&dev->kobj, &thermal_attr_group);  in thermal_throttle_add_dev()
463 	sysfs_remove_group(&dev->kobj, &thermal_attr_group);  in thermal_throttle_remove_dev()
466 /* Get notified when a cpu comes on/off. Be hotplug friendly. */
473 	state->package_throttle.level = PACKAGE_LEVEL;  in thermal_throttle_online()
474 	state->core_throttle.level = CORE_LEVEL;  in thermal_throttle_online()
476 	INIT_DELAYED_WORK(&state->package_throttle.therm_work, throttle_active_work);  in thermal_throttle_online()
477 	INIT_DELAYED_WORK(&state->core_throttle.therm_work, throttle_active_work);  in thermal_throttle_online()
505 	cancel_delayed_work_sync(&state->package_throttle.therm_work);  in thermal_throttle_offline()
506 	cancel_delayed_work_sync(&state->core_throttle.therm_work);  in thermal_throttle_offline()
508 	state->package_throttle.rate_control_active = false;  in thermal_throttle_offline()
509 	state->core_throttle.rate_control_active = false;  in thermal_throttle_offline()
675 	 * 0x10000 because APs are woken up by BSP issuing INIT-SIPI-SIPI  in intel_init_thermal()
695 		if (c->x86 == 6 && (c->x86_model == 9 || c->x86_model == 13)) {  in intel_init_thermal()