6 struct kvm_kpit_timer
{
9 s64 period
; /* unit: ns */
14 struct kvm_kpit_channel_state
{
15 u32 count
; /* can be 65536 */
25 u8 bcd
; /* not supported */
26 u8 gate
; /* timer start */
27 ktime_t count_load_time
;
30 struct kvm_kpit_state
{
31 struct kvm_kpit_channel_state channels
[3];
32 struct kvm_kpit_timer pit_timer
;
36 spinlock_t inject_lock
;
37 unsigned long irq_ack
;
38 struct kvm_irq_ack_notifier irq_ack_notifier
;
42 unsigned long base_addresss
;
43 struct kvm_io_device dev
;
44 struct kvm_io_device speaker_dev
;
46 struct kvm_kpit_state pit_state
;
50 #define KVM_PIT_BASE_ADDRESS 0x40
51 #define KVM_SPEAKER_BASE_ADDRESS 0x61
52 #define KVM_PIT_MEM_LENGTH 4
53 #define KVM_PIT_FREQ 1193181
54 #define KVM_MAX_PIT_INTR_INTERVAL HZ / 100
55 #define KVM_PIT_CHANNEL_MASK 0x3
57 void kvm_inject_pit_timer_irqs(struct kvm_vcpu
*vcpu
);
58 void kvm_pit_load_count(struct kvm
*kvm
, int channel
, u32 val
);
59 struct kvm_pit
*kvm_create_pit(struct kvm
*kvm
);
60 void kvm_free_pit(struct kvm
*kvm
);
61 void kvm_pit_reset(struct kvm_pit
*pit
);