6 struct kvm_kpit_channel_state {
7 u32 count; /* can be 65536 */
17 u8 bcd; /* not supported */
18 u8 gate; /* timer start */
19 ktime_t count_load_time;
22 struct kvm_kpit_state {
23 struct kvm_kpit_channel_state channels[3];
24 struct kvm_timer pit_timer;
29 spinlock_t inject_lock;
30 unsigned long irq_ack;
31 struct kvm_irq_ack_notifier irq_ack_notifier;
35 unsigned long base_addresss;
36 struct kvm_io_device dev;
37 struct kvm_io_device speaker_dev;
39 struct kvm_kpit_state pit_state;
41 struct kvm_irq_mask_notifier mask_notifier;
44 #define KVM_PIT_BASE_ADDRESS 0x40
45 #define KVM_SPEAKER_BASE_ADDRESS 0x61
46 #define KVM_PIT_MEM_LENGTH 4
47 #define KVM_PIT_FREQ 1193181
48 #define KVM_MAX_PIT_INTR_INTERVAL HZ / 100
49 #define KVM_PIT_CHANNEL_MASK 0x3
51 void kvm_inject_pit_timer_irqs(struct kvm_vcpu *vcpu);
52 void kvm_pit_load_count(struct kvm *kvm, int channel, u32 val);
53 struct kvm_pit *kvm_create_pit(struct kvm *kvm);
54 void kvm_free_pit(struct kvm *kvm);
55 void kvm_pit_reset(struct kvm_pit *pit);