125 static void lapic_timer_check_state(int state, struct acpi_processor *pr,  in lapic_timer_check_state()  argument
128 	struct acpi_processor_power *pwr = &pr->power;  in lapic_timer_check_state()
131 	if (cpu_has(&cpu_data(pr->id), X86_FEATURE_ARAT))  in lapic_timer_check_state()
145 		pr->power.timer_broadcast_on_state = state;  in lapic_timer_check_state()
150 	struct acpi_processor *pr = arg;  in __lapic_timer_propagate_broadcast()  local
152 	if (pr->power.timer_broadcast_on_state < INT_MAX)  in __lapic_timer_propagate_broadcast()
158 static void lapic_timer_propagate_broadcast(struct acpi_processor *pr)  in lapic_timer_propagate_broadcast()  argument
160 	smp_call_function_single(pr->id, __lapic_timer_propagate_broadcast,  in lapic_timer_propagate_broadcast()
161 				 (void *)pr, 1);  in lapic_timer_propagate_broadcast()
165 static bool lapic_timer_needs_broadcast(struct acpi_processor *pr,  in lapic_timer_needs_broadcast()  argument
168 	return cx - pr->power.states >= pr->power.timer_broadcast_on_state;  in lapic_timer_needs_broadcast()
173 static void lapic_timer_check_state(int state, struct acpi_processor *pr,  in lapic_timer_check_state()  argument
175 static void lapic_timer_propagate_broadcast(struct acpi_processor *pr) { }  in lapic_timer_propagate_broadcast()  argument
177 static bool lapic_timer_needs_broadcast(struct acpi_processor *pr,  in lapic_timer_needs_broadcast()  argument
211 static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)  in acpi_processor_get_power_info_fadt()  argument
214 	if (!pr->pblk)  in acpi_processor_get_power_info_fadt()
218 	pr->power.states[ACPI_STATE_C2].type = ACPI_STATE_C2;  in acpi_processor_get_power_info_fadt()
219 	pr->power.states[ACPI_STATE_C3].type = ACPI_STATE_C3;  in acpi_processor_get_power_info_fadt()
232 	pr->power.states[ACPI_STATE_C2].address = pr->pblk + 4;  in acpi_processor_get_power_info_fadt()
233 	pr->power.states[ACPI_STATE_C3].address = pr->pblk + 5;  in acpi_processor_get_power_info_fadt()
236 	pr->power.states[ACPI_STATE_C2].latency = acpi_gbl_FADT.c2_latency;  in acpi_processor_get_power_info_fadt()
237 	pr->power.states[ACPI_STATE_C3].latency = acpi_gbl_FADT.c3_latency;  in acpi_processor_get_power_info_fadt()
244 		acpi_handle_debug(pr->handle, "C2 latency too large [%d]\n",  in acpi_processor_get_power_info_fadt()
247 		pr->power.states[ACPI_STATE_C2].address = 0;  in acpi_processor_get_power_info_fadt()
255 		acpi_handle_debug(pr->handle, "C3 latency too large [%d]\n",  in acpi_processor_get_power_info_fadt()
258 		pr->power.states[ACPI_STATE_C3].address = 0;  in acpi_processor_get_power_info_fadt()
261 	acpi_handle_debug(pr->handle, "lvl2[0x%08x] lvl3[0x%08x]\n",  in acpi_processor_get_power_info_fadt()
262 			  pr->power.states[ACPI_STATE_C2].address,  in acpi_processor_get_power_info_fadt()
263 			  pr->power.states[ACPI_STATE_C3].address);  in acpi_processor_get_power_info_fadt()
265 	snprintf(pr->power.states[ACPI_STATE_C2].desc,  in acpi_processor_get_power_info_fadt()
267 			 pr->power.states[ACPI_STATE_C2].address);  in acpi_processor_get_power_info_fadt()
268 	snprintf(pr->power.states[ACPI_STATE_C3].desc,  in acpi_processor_get_power_info_fadt()
270 			 pr->power.states[ACPI_STATE_C3].address);  in acpi_processor_get_power_info_fadt()
275 static int acpi_processor_get_power_info_default(struct acpi_processor *pr)  in acpi_processor_get_power_info_default()  argument
277 	if (!pr->power.states[ACPI_STATE_C1].valid) {  in acpi_processor_get_power_info_default()
280 		pr->power.states[ACPI_STATE_C1].type = ACPI_STATE_C1;  in acpi_processor_get_power_info_default()
281 		pr->power.states[ACPI_STATE_C1].valid = 1;  in acpi_processor_get_power_info_default()
282 		pr->power.states[ACPI_STATE_C1].entry_method = ACPI_CSTATE_HALT;  in acpi_processor_get_power_info_default()
284 		snprintf(pr->power.states[ACPI_STATE_C1].desc,  in acpi_processor_get_power_info_default()
288 	pr->power.states[ACPI_STATE_C0].valid = 1;  in acpi_processor_get_power_info_default()
292 static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)  in acpi_processor_get_power_info_cst()  argument
299 	ret = acpi_processor_evaluate_cst(pr->handle, pr->id, &pr->power);  in acpi_processor_get_power_info_cst()
303 	if (!pr->power.count)  in acpi_processor_get_power_info_cst()
306 	pr->flags.has_cst = 1;  in acpi_processor_get_power_info_cst()
310 static void acpi_processor_power_verify_c3(struct acpi_processor *pr,  in acpi_processor_power_verify_c3()  argument
328 		acpi_handle_debug(pr->handle,  in acpi_processor_power_verify_c3()
336 		acpi_processor_power_init_bm_check(&(pr->flags), pr->id);  in acpi_processor_power_verify_c3()
337 		bm_check_flag = pr->flags.bm_check;  in acpi_processor_power_verify_c3()
338 		bm_control_flag = pr->flags.bm_control;  in acpi_processor_power_verify_c3()
340 		pr->flags.bm_check = bm_check_flag;  in acpi_processor_power_verify_c3()
341 		pr->flags.bm_control = bm_control_flag;  in acpi_processor_power_verify_c3()
344 	if (pr->flags.bm_check) {  in acpi_processor_power_verify_c3()
345 		if (!pr->flags.bm_control) {  in acpi_processor_power_verify_c3()
346 			if (pr->flags.has_cst != 1) {  in acpi_processor_power_verify_c3()
348 				acpi_handle_debug(pr->handle,  in acpi_processor_power_verify_c3()
353 				acpi_handle_debug(pr->handle,  in acpi_processor_power_verify_c3()
363 			acpi_handle_debug(pr->handle,  in acpi_processor_power_verify_c3()
410 static int acpi_processor_power_verify(struct acpi_processor *pr)  in acpi_processor_power_verify()  argument
418 	pr->power.timer_broadcast_on_state = INT_MAX;  in acpi_processor_power_verify()
421 		struct acpi_processor_cx *cx = &pr->power.states[i];  in acpi_processor_power_verify()
435 			acpi_processor_power_verify_c3(pr, cx);  in acpi_processor_power_verify()
445 		lapic_timer_check_state(i, pr, cx);  in acpi_processor_power_verify()
452 		sort(&pr->power.states[1], max_cstate,  in acpi_processor_power_verify()
458 	lapic_timer_propagate_broadcast(pr);  in acpi_processor_power_verify()
463 static int acpi_processor_get_cstate_info(struct acpi_processor *pr)  in acpi_processor_get_cstate_info()  argument
473 	memset(pr->power.states, 0, sizeof(pr->power.states));  in acpi_processor_get_cstate_info()
475 	result = acpi_processor_get_power_info_cst(pr);  in acpi_processor_get_cstate_info()
477 		result = acpi_processor_get_power_info_fadt(pr);  in acpi_processor_get_cstate_info()
482 	acpi_processor_get_power_info_default(pr);  in acpi_processor_get_cstate_info()
484 	pr->power.count = acpi_processor_power_verify(pr);  in acpi_processor_get_cstate_info()
491 		if (pr->power.states[i].valid) {  in acpi_processor_get_cstate_info()
492 			pr->power.count = i;  in acpi_processor_get_cstate_info()
493 			pr->flags.power = 1;  in acpi_processor_get_cstate_info()
606 static __always_inline bool acpi_idle_fallback_to_c1(struct acpi_processor *pr)  in acpi_idle_fallback_to_c1()  argument
608 	return IS_ENABLED(CONFIG_HOTPLUG_CPU) && !pr->flags.has_cst &&  in acpi_idle_fallback_to_c1()
618  * @pr: Target processor
623 			       struct acpi_processor *pr,  in acpi_idle_enter_bm()  argument
639 	bool dis_bm = pr->flags.bm_control;  in acpi_idle_enter_bm()
687 	struct acpi_processor *pr;  in acpi_idle_enter()  local
689 	pr = __this_cpu_read(processors);  in acpi_idle_enter()
690 	if (unlikely(!pr))  in acpi_idle_enter()
694 		if (cx->type == ACPI_STATE_C3 && pr->flags.bm_check)  in acpi_idle_enter()
695 			return acpi_idle_enter_bm(drv, pr, cx, index);  in acpi_idle_enter()
698 		if (acpi_idle_fallback_to_c1(pr) && num_online_cpus() > 1) {  in acpi_idle_enter()
718 		struct acpi_processor *pr = __this_cpu_read(processors);  in acpi_idle_enter_s2idle()  local
720 		if (unlikely(!pr))  in acpi_idle_enter_s2idle()
723 		if (pr->flags.bm_check) {  in acpi_idle_enter_s2idle()
728 			acpi_idle_enter_bm(drv, pr, cx, index);  in acpi_idle_enter_s2idle()
741 static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr,  in acpi_processor_setup_cpuidle_cx()  argument
753 		cx = &pr->power.states[i];  in acpi_processor_setup_cpuidle_cx()
760 		if (lapic_timer_needs_broadcast(pr, cx))  in acpi_processor_setup_cpuidle_cx()
765 			if (pr->flags.bm_check)  in acpi_processor_setup_cpuidle_cx()
780 static int acpi_processor_setup_cstates(struct acpi_processor *pr)  in acpi_processor_setup_cstates()  argument
798 		cx = &pr->power.states[i];  in acpi_processor_setup_cstates()
824 		if (cx->type != ACPI_STATE_C1 && !acpi_idle_fallback_to_c1(pr))  in acpi_processor_setup_cstates()
862 static int acpi_processor_get_cstate_info(struct acpi_processor *pr)  in acpi_processor_get_cstate_info()  argument
867 static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr,  in acpi_processor_setup_cpuidle_cx()  argument
873 static int acpi_processor_setup_cstates(struct acpi_processor *pr)  in acpi_processor_setup_cstates()  argument
1054 static int flatten_lpi_states(struct acpi_processor *pr,  in flatten_lpi_states()  argument
1075 		flpi = &pr->power.lpi_states[flat_state_cnt];  in flatten_lpi_states()
1104 static int acpi_processor_get_lpi_info(struct acpi_processor *pr)  in acpi_processor_get_lpi_info()  argument
1108 	acpi_handle handle = pr->handle, pr_ahandle;  in acpi_processor_get_lpi_info()
1113 	ret = acpi_processor_ffh_lpi_probe(pr->id);  in acpi_processor_get_lpi_info()
1126 	handle = pr->handle;  in acpi_processor_get_lpi_info()
1130 	flatten_lpi_states(pr, prev, NULL);  in acpi_processor_get_lpi_info()
1152 		flatten_lpi_states(pr, curr, prev);  in acpi_processor_get_lpi_info()
1159 	pr->power.count = flat_state_cnt;  in acpi_processor_get_lpi_info()
1161 	for (i = 0; i < pr->power.count; i++)  in acpi_processor_get_lpi_info()
1162 		pr->power.lpi_states[i].index = i;  in acpi_processor_get_lpi_info()
1165 	pr->flags.has_lpi = 1;  in acpi_processor_get_lpi_info()
1166 	pr->flags.power = 1;  in acpi_processor_get_lpi_info()
1187 	struct acpi_processor *pr;  in acpi_idle_lpi_enter()  local
1190 	pr = __this_cpu_read(processors);  in acpi_idle_lpi_enter()
1192 	if (unlikely(!pr))  in acpi_idle_lpi_enter()
1195 	lpi = &pr->power.lpi_states[index];  in acpi_idle_lpi_enter()
1202 static int acpi_processor_setup_lpi_states(struct acpi_processor *pr)  in acpi_processor_setup_lpi_states()  argument
1209 	if (!pr->flags.has_lpi)  in acpi_processor_setup_lpi_states()
1212 	for (i = 0; i < pr->power.count && i < CPUIDLE_STATE_MAX; i++) {  in acpi_processor_setup_lpi_states()
1213 		lpi = &pr->power.lpi_states[i];  in acpi_processor_setup_lpi_states()
1236  * @pr: the ACPI processor
1238 static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)  in acpi_processor_setup_cpuidle_states()  argument
1243 	if (!pr->flags.power_setup_done || !pr->flags.power)  in acpi_processor_setup_cpuidle_states()
1252 	if (pr->flags.has_lpi)  in acpi_processor_setup_cpuidle_states()
1253 		return acpi_processor_setup_lpi_states(pr);  in acpi_processor_setup_cpuidle_states()
1255 	return acpi_processor_setup_cstates(pr);  in acpi_processor_setup_cpuidle_states()
1262  * @pr: the ACPI processor
1265 static int acpi_processor_setup_cpuidle_dev(struct acpi_processor *pr,  in acpi_processor_setup_cpuidle_dev()  argument
1268 	if (!pr->flags.power_setup_done || !pr->flags.power || !dev)  in acpi_processor_setup_cpuidle_dev()
1271 	dev->cpu = pr->id;  in acpi_processor_setup_cpuidle_dev()
1272 	if (pr->flags.has_lpi)  in acpi_processor_setup_cpuidle_dev()
1273 		return acpi_processor_ffh_lpi_probe(pr->id);  in acpi_processor_setup_cpuidle_dev()
1275 	return acpi_processor_setup_cpuidle_cx(pr, dev);  in acpi_processor_setup_cpuidle_dev()
1278 static int acpi_processor_get_power_info(struct acpi_processor *pr)  in acpi_processor_get_power_info()  argument
1282 	ret = acpi_processor_get_lpi_info(pr);  in acpi_processor_get_power_info()
1284 		ret = acpi_processor_get_cstate_info(pr);  in acpi_processor_get_power_info()
1289 int acpi_processor_hotplug(struct acpi_processor *pr)  in acpi_processor_hotplug()  argument
1297 	if (!pr->flags.power_setup_done)  in acpi_processor_hotplug()
1300 	dev = per_cpu(acpi_cpuidle_device, pr->id);  in acpi_processor_hotplug()
1303 	ret = acpi_processor_get_power_info(pr);  in acpi_processor_hotplug()
1304 	if (!ret && pr->flags.power) {  in acpi_processor_hotplug()
1305 		acpi_processor_setup_cpuidle_dev(pr, dev);  in acpi_processor_hotplug()
1313 int acpi_processor_power_state_has_changed(struct acpi_processor *pr)  in acpi_processor_power_state_has_changed()  argument
1322 	if (!pr->flags.power_setup_done)  in acpi_processor_power_state_has_changed()
1331 	if (pr->id == 0 && cpuidle_get_driver() == &acpi_idle_driver) {  in acpi_processor_power_state_has_changed()
1347 		acpi_processor_get_power_info(pr);  in acpi_processor_power_state_has_changed()
1348 		acpi_processor_setup_cpuidle_states(pr);  in acpi_processor_power_state_has_changed()
1371 int acpi_processor_power_init(struct acpi_processor *pr)  in acpi_processor_power_init()  argument
1381 	if (!acpi_processor_get_power_info(pr))  in acpi_processor_power_init()
1382 		pr->flags.power_setup_done = 1;  in acpi_processor_power_init()
1389 	if (pr->flags.power) {  in acpi_processor_power_init()
1392 			acpi_processor_setup_cpuidle_states(pr);  in acpi_processor_power_init()
1403 		per_cpu(acpi_cpuidle_device, pr->id) = dev;  in acpi_processor_power_init()
1405 		acpi_processor_setup_cpuidle_dev(pr, dev);  in acpi_processor_power_init()
1421 int acpi_processor_power_exit(struct acpi_processor *pr)  in acpi_processor_power_exit()  argument
1423 	struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);  in acpi_processor_power_exit()
1428 	if (pr->flags.power) {  in acpi_processor_power_exit()
1435 	pr->flags.power_setup_done = 0;  in acpi_processor_power_exit()