4 #include <linux/kthread.h>
8 struct kvm_kpit_channel_state {
9 u32 count; /* can be 65536 */
19 u8 bcd; /* not supported */
20 u8 gate; /* timer start */
21 ktime_t count_load_time;
24 struct kvm_kpit_state {
25 struct kvm_kpit_channel_state channels[3];
27 struct kvm_timer pit_timer;
32 spinlock_t inject_lock;
33 unsigned long irq_ack;
34 struct kvm_irq_ack_notifier irq_ack_notifier;
38 struct kvm_io_device dev;
39 struct kvm_io_device speaker_dev;
41 struct kvm_kpit_state pit_state;
43 struct kvm_irq_mask_notifier mask_notifier;
44 struct kthread_worker worker;
45 struct task_struct *worker_task;
46 struct kthread_work expired;
49 #define KVM_PIT_BASE_ADDRESS 0x40
50 #define KVM_SPEAKER_BASE_ADDRESS 0x61
51 #define KVM_PIT_MEM_LENGTH 4
52 #define KVM_PIT_FREQ 1193181
53 #define KVM_MAX_PIT_INTR_INTERVAL HZ / 100
54 #define KVM_PIT_CHANNEL_MASK 0x3
56 void kvm_pit_load_count(struct kvm *kvm, int channel, u32 val, int hpet_legacy_start);
57 struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags);
58 void kvm_free_pit(struct kvm *kvm);
59 void kvm_pit_reset(struct kvm_pit *pit);