74 static void pit_set_gate(struct kvm *kvm, int channel, u32 val)  in pit_set_gate()  argument
77 		&kvm->arch.vpit->pit_state.channels[channel];  in pit_set_gate()
79 	WARN_ON(!mutex_is_locked(&kvm->arch.vpit->pit_state.lock));  in pit_set_gate()
100 static int pit_get_gate(struct kvm *kvm, int channel)  in pit_get_gate()  argument
102 	WARN_ON(!mutex_is_locked(&kvm->arch.vpit->pit_state.lock));  in pit_get_gate()
104 	return kvm->arch.vpit->pit_state.channels[channel].gate;  in pit_get_gate()
107 static s64 __kpit_elapsed(struct kvm *kvm)  in __kpit_elapsed()  argument
111 	struct kvm_kpit_state *ps = &kvm->arch.vpit->pit_state;  in __kpit_elapsed()
131 static s64 kpit_elapsed(struct kvm *kvm, struct kvm_kpit_channel_state *c,  in kpit_elapsed()  argument
135 		return __kpit_elapsed(kvm);  in kpit_elapsed()
140 static int pit_get_count(struct kvm *kvm, int channel)  in pit_get_count()  argument
143 		&kvm->arch.vpit->pit_state.channels[channel];  in pit_get_count()
147 	WARN_ON(!mutex_is_locked(&kvm->arch.vpit->pit_state.lock));  in pit_get_count()
149 	t = kpit_elapsed(kvm, c, channel);  in pit_get_count()
170 static int pit_get_out(struct kvm *kvm, int channel)  in pit_get_out()  argument
173 		&kvm->arch.vpit->pit_state.channels[channel];  in pit_get_out()
177 	WARN_ON(!mutex_is_locked(&kvm->arch.vpit->pit_state.lock));  in pit_get_out()
179 	t = kpit_elapsed(kvm, c, channel);  in pit_get_out()
205 static void pit_latch_count(struct kvm *kvm, int channel)  in pit_latch_count()  argument
208 		&kvm->arch.vpit->pit_state.channels[channel];  in pit_latch_count()
210 	WARN_ON(!mutex_is_locked(&kvm->arch.vpit->pit_state.lock));  in pit_latch_count()
213 		c->latched_count = pit_get_count(kvm, channel);  in pit_latch_count()
218 static void pit_latch_status(struct kvm *kvm, int channel)  in pit_latch_status()  argument
221 		&kvm->arch.vpit->pit_state.channels[channel];  in pit_latch_status()
223 	WARN_ON(!mutex_is_locked(&kvm->arch.vpit->pit_state.lock));  in pit_latch_status()
227 		c->status = ((pit_get_out(kvm, channel) << 7) |  in pit_latch_status()
259 	struct kvm_pit *pit = vcpu->kvm->arch.vpit;  in __kvm_migrate_pit_timer()
281 	struct kvm *kvm = pit->kvm;  in pit_do_work()  local
299 		kvm_set_irq(kvm, kvm->arch.vpit->irq_source_id, 0, 1, false);  in pit_do_work()
300 		kvm_set_irq(kvm, kvm->arch.vpit->irq_source_id, 0, 0, false);  in pit_do_work()
311 		if (atomic_read(&kvm->arch.vapics_in_nmi_mode) > 0)  in pit_do_work()
312 			kvm_for_each_vcpu(i, vcpu, kvm)  in pit_do_work()
320 	struct kvm_pit *pt = ps->kvm->arch.vpit;  in pit_timer_fn()
334 static void create_pit_timer(struct kvm *kvm, u32 val, int is_period)  in create_pit_timer()  argument
336 	struct kvm_kpit_state *ps = &kvm->arch.vpit->pit_state;  in create_pit_timer()
339 	if (!ioapic_in_kernel(kvm) ||  in create_pit_timer()
354 	ps->kvm = ps->pit->kvm;  in create_pit_timer()
380 static void pit_load_count(struct kvm *kvm, int channel, u32 val)  in pit_load_count()  argument
382 	struct kvm_kpit_state *ps = &kvm->arch.vpit->pit_state;  in pit_load_count()
409 		create_pit_timer(kvm, val, 0);  in pit_load_count()
413 		create_pit_timer(kvm, val, 1);  in pit_load_count()
416 		destroy_pit_timer(kvm->arch.vpit);  in pit_load_count()
420 void kvm_pit_load_count(struct kvm *kvm, int channel, u32 val, int hpet_legacy_start)  in kvm_pit_load_count()  argument
426 		saved_mode = kvm->arch.vpit->pit_state.channels[0].mode;  in kvm_pit_load_count()
427 		kvm->arch.vpit->pit_state.channels[0].mode = 0xff; /* disable timer */  in kvm_pit_load_count()
428 		pit_load_count(kvm, channel, val);  in kvm_pit_load_count()
429 		kvm->arch.vpit->pit_state.channels[0].mode = saved_mode;  in kvm_pit_load_count()
431 		pit_load_count(kvm, channel, val);  in kvm_pit_load_count()
457 	struct kvm *kvm = pit->kvm;  in pit_ioport_write()  local
481 						pit_latch_count(kvm, channel);  in pit_ioport_write()
483 						pit_latch_status(kvm, channel);  in pit_ioport_write()
491 				pit_latch_count(kvm, channel);  in pit_ioport_write()
508 			pit_load_count(kvm, addr, val);  in pit_ioport_write()
511 			pit_load_count(kvm, addr, val << 8);  in pit_ioport_write()
518 			pit_load_count(kvm, addr, s->write_latch | (val << 8));  in pit_ioport_write()
534 	struct kvm *kvm = pit->kvm;  in pit_ioport_read()  local
571 			count = pit_get_count(kvm, addr);  in pit_ioport_read()
575 			count = pit_get_count(kvm, addr);  in pit_ioport_read()
579 			count = pit_get_count(kvm, addr);  in pit_ioport_read()
584 			count = pit_get_count(kvm, addr);  in pit_ioport_read()
605 	struct kvm *kvm = pit->kvm;  in speaker_ioport_write()  local
612 	pit_set_gate(kvm, 2, val & 1);  in speaker_ioport_write()
623 	struct kvm *kvm = pit->kvm;  in speaker_ioport_read()  local
633 	ret = ((pit_state->speaker_data_on << 1) | pit_get_gate(kvm, 2) |  in speaker_ioport_read()
634 		(pit_get_out(kvm, 2) << 5) | (refresh_clock << 4));  in speaker_ioport_read()
653 		pit_load_count(pit->kvm, i, 0);  in kvm_pit_reset()
682 struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags)  in kvm_create_pit()  argument
694 	pit->irq_source_id = kvm_request_irq_source_id(kvm);  in kvm_create_pit()
713 		kvm_free_irq_source_id(kvm, pit->irq_source_id);  in kvm_create_pit()
719 	kvm->arch.vpit = pit;  in kvm_create_pit()
720 	pit->kvm = kvm;  in kvm_create_pit()
727 	kvm_register_irq_ack_notifier(kvm, &pit_state->irq_ack_notifier);  in kvm_create_pit()
734 	kvm_register_irq_mask_notifier(kvm, 0, &pit->mask_notifier);  in kvm_create_pit()
737 	ret = kvm_io_bus_register_dev(kvm, KVM_PIO_BUS, KVM_PIT_BASE_ADDRESS,  in kvm_create_pit()
744 		ret = kvm_io_bus_register_dev(kvm, KVM_PIO_BUS,  in kvm_create_pit()
754 	kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS, &pit->dev);  in kvm_create_pit()
757 	kvm_unregister_irq_mask_notifier(kvm, 0, &pit->mask_notifier);  in kvm_create_pit()
758 	kvm_unregister_irq_ack_notifier(kvm, &pit_state->irq_ack_notifier);  in kvm_create_pit()
759 	kvm_free_irq_source_id(kvm, pit->irq_source_id);  in kvm_create_pit()
765 void kvm_free_pit(struct kvm *kvm)  in kvm_free_pit()  argument
769 	if (kvm->arch.vpit) {  in kvm_free_pit()
770 		kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS, &kvm->arch.vpit->dev);  in kvm_free_pit()
771 		kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS,  in kvm_free_pit()
772 					      &kvm->arch.vpit->speaker_dev);  in kvm_free_pit()
773 		kvm_unregister_irq_mask_notifier(kvm, 0,  in kvm_free_pit()
774 					       &kvm->arch.vpit->mask_notifier);  in kvm_free_pit()
775 		kvm_unregister_irq_ack_notifier(kvm,  in kvm_free_pit()
776 				&kvm->arch.vpit->pit_state.irq_ack_notifier);  in kvm_free_pit()
777 		mutex_lock(&kvm->arch.vpit->pit_state.lock);  in kvm_free_pit()
778 		timer = &kvm->arch.vpit->pit_state.timer;  in kvm_free_pit()
780 		flush_kthread_work(&kvm->arch.vpit->expired);  in kvm_free_pit()
781 		kthread_stop(kvm->arch.vpit->worker_task);  in kvm_free_pit()
782 		kvm_free_irq_source_id(kvm, kvm->arch.vpit->irq_source_id);  in kvm_free_pit()
783 		mutex_unlock(&kvm->arch.vpit->pit_state.lock);  in kvm_free_pit()
784 		kfree(kvm->arch.vpit);  in kvm_free_pit()