KVM: fold kvm_pit_timer into kvm_kpit_state
[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / x86 / kvm / i8254.h
1 #ifndef __I8254_H
2 #define __I8254_H
3
4 #include <linux/kthread.h>
5
6 #include "iodev.h"
7
8 struct kvm_kpit_channel_state {
9         u32 count; /* can be 65536 */
10         u16 latched_count;
11         u8 count_latched;
12         u8 status_latched;
13         u8 status;
14         u8 read_state;
15         u8 write_state;
16         u8 write_latch;
17         u8 rw_mode;
18         u8 mode;
19         u8 bcd; /* not supported */
20         u8 gate; /* timer start */
21         ktime_t count_load_time;
22 };
23
24 struct kvm_kpit_state {
25         struct kvm_kpit_channel_state channels[3];
26         u32 flags;
27         bool is_periodic;
28         s64 period;                             /* unit: ns */
29         struct hrtimer timer;
30         atomic_t pending;                       /* accumulated triggered timers */
31         bool reinject;
32         struct kvm *kvm;
33         u32    speaker_data_on;
34         struct mutex lock;
35         struct kvm_pit *pit;
36         spinlock_t inject_lock;
37         unsigned long irq_ack;
38         struct kvm_irq_ack_notifier irq_ack_notifier;
39 };
40
41 struct kvm_pit {
42         struct kvm_io_device dev;
43         struct kvm_io_device speaker_dev;
44         struct kvm *kvm;
45         struct kvm_kpit_state pit_state;
46         int irq_source_id;
47         struct kvm_irq_mask_notifier mask_notifier;
48         struct kthread_worker worker;
49         struct task_struct *worker_task;
50         struct kthread_work expired;
51 };
52
53 #define KVM_PIT_BASE_ADDRESS        0x40
54 #define KVM_SPEAKER_BASE_ADDRESS    0x61
55 #define KVM_PIT_MEM_LENGTH          4
56 #define KVM_PIT_FREQ                1193181
57 #define KVM_MAX_PIT_INTR_INTERVAL   HZ / 100
58 #define KVM_PIT_CHANNEL_MASK        0x3
59
60 void kvm_pit_load_count(struct kvm *kvm, int channel, u32 val, int hpet_legacy_start);
61 struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags);
62 void kvm_free_pit(struct kvm *kvm);
63 void kvm_pit_reset(struct kvm_pit *pit);
64
65 #endif