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];
25 struct kvm_timer pit_timer;
30 raw_spinlock_t inject_lock;
31 unsigned long irq_ack;
32 struct kvm_irq_ack_notifier irq_ack_notifier;
36 unsigned long base_addresss;
37 struct kvm_io_device dev;
38 struct kvm_io_device speaker_dev;
40 struct kvm_kpit_state pit_state;
42 struct kvm_irq_mask_notifier mask_notifier;
45 #define KVM_PIT_BASE_ADDRESS 0x40
46 #define KVM_SPEAKER_BASE_ADDRESS 0x61
47 #define KVM_PIT_MEM_LENGTH 4
48 #define KVM_PIT_FREQ 1193181
49 #define KVM_MAX_PIT_INTR_INTERVAL HZ / 100
50 #define KVM_PIT_CHANNEL_MASK 0x3
52 void kvm_inject_pit_timer_irqs(struct kvm_vcpu *vcpu);
53 void kvm_pit_load_count(struct kvm *kvm, int channel, u32 val, int hpet_legacy_start);
54 struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags);
55 void kvm_free_pit(struct kvm *kvm);
56 void kvm_pit_reset(struct kvm_pit *pit);