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7 #ifndef __ASM_ARM_KVM_ARCH_TIMER_H
8 #define __ASM_ARM_KVM_ARCH_TIMER_H
9
10 #include <linux/clocksource.h>
11 #include <linux/hrtimer.h>
12
13 enum kvm_arch_timers {
14 TIMER_PTIMER,
15 TIMER_VTIMER,
16 NR_KVM_TIMERS
17 };
18
19 enum kvm_arch_timer_regs {
20 TIMER_REG_CNT,
21 TIMER_REG_CVAL,
22 TIMER_REG_TVAL,
23 TIMER_REG_CTL,
24 };
25
26 struct arch_timer_context {
27 struct kvm_vcpu *vcpu;
28
29
30 u32 cnt_ctl;
31 u64 cnt_cval;
32
33
34 struct kvm_irq_level irq;
35
36
37 u64 cntvoff;
38
39
40 struct hrtimer hrtimer;
41
42
43
44
45
46
47 bool loaded;
48
49
50 u32 host_timer_irq;
51 u32 host_timer_irq_flags;
52 };
53
54 struct timer_map {
55 struct arch_timer_context *direct_vtimer;
56 struct arch_timer_context *direct_ptimer;
57 struct arch_timer_context *emul_ptimer;
58 };
59
60 struct arch_timer_cpu {
61 struct arch_timer_context timers[NR_KVM_TIMERS];
62
63
64 struct hrtimer bg_timer;
65
66
67 bool enabled;
68 };
69
70 int kvm_timer_hyp_init(bool);
71 int kvm_timer_enable(struct kvm_vcpu *vcpu);
72 int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu);
73 void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu);
74 void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu);
75 bool kvm_timer_should_notify_user(struct kvm_vcpu *vcpu);
76 void kvm_timer_update_run(struct kvm_vcpu *vcpu);
77 void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu);
78
79 u64 kvm_arm_timer_get_reg(struct kvm_vcpu *, u64 regid);
80 int kvm_arm_timer_set_reg(struct kvm_vcpu *, u64 regid, u64 value);
81
82 int kvm_arm_timer_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr);
83 int kvm_arm_timer_get_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr);
84 int kvm_arm_timer_has_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr);
85
86 bool kvm_timer_is_pending(struct kvm_vcpu *vcpu);
87
88 u64 kvm_phys_timer_read(void);
89
90 void kvm_timer_vcpu_load(struct kvm_vcpu *vcpu);
91 void kvm_timer_vcpu_put(struct kvm_vcpu *vcpu);
92
93 void kvm_timer_init_vhe(void);
94
95 bool kvm_arch_timer_get_input_level(int vintid);
96
97 #define vcpu_timer(v) (&(v)->arch.timer_cpu)
98 #define vcpu_get_timer(v,t) (&vcpu_timer(v)->timers[(t)])
99 #define vcpu_vtimer(v) (&(v)->arch.timer_cpu.timers[TIMER_VTIMER])
100 #define vcpu_ptimer(v) (&(v)->arch.timer_cpu.timers[TIMER_PTIMER])
101
102 #define arch_timer_ctx_index(ctx) ((ctx) - vcpu_timer((ctx)->vcpu)->timers)
103
104 u64 kvm_arm_timer_read_sysreg(struct kvm_vcpu *vcpu,
105 enum kvm_arch_timers tmr,
106 enum kvm_arch_timer_regs treg);
107 void kvm_arm_timer_write_sysreg(struct kvm_vcpu *vcpu,
108 enum kvm_arch_timers tmr,
109 enum kvm_arch_timer_regs treg,
110 u64 val);
111
112 #endif