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7#ifndef __ARM_KVM_HYP_H__
8#define __ARM_KVM_HYP_H__
9
10#include <linux/compiler.h>
11#include <linux/kvm_host.h>
12#include <asm/cp15.h>
13#include <asm/kvm_arm.h>
14#include <asm/vfp.h>
15
16#define __hyp_text __section(.hyp.text) notrace
17
18#define __ACCESS_VFP(CRn) \
19 "mrc", "mcr", __stringify(p10, 7, %0, CRn, cr0, 0), u32
20
21#define write_special(v, r) \
22 asm volatile("msr " __stringify(r) ", %0" : : "r" (v))
23#define read_special(r) ({ \
24 u32 __val; \
25 asm volatile("mrs %0, " __stringify(r) : "=r" (__val)); \
26 __val; \
27})
28
29#define TTBR0 __ACCESS_CP15_64(0, c2)
30#define TTBR1 __ACCESS_CP15_64(1, c2)
31#define VTTBR __ACCESS_CP15_64(6, c2)
32#define PAR __ACCESS_CP15_64(0, c7)
33#define CNTP_CVAL __ACCESS_CP15_64(2, c14)
34#define CNTV_CVAL __ACCESS_CP15_64(3, c14)
35#define CNTVOFF __ACCESS_CP15_64(4, c14)
36
37#define MIDR __ACCESS_CP15(c0, 0, c0, 0)
38#define CSSELR __ACCESS_CP15(c0, 2, c0, 0)
39#define VPIDR __ACCESS_CP15(c0, 4, c0, 0)
40#define VMPIDR __ACCESS_CP15(c0, 4, c0, 5)
41#define SCTLR __ACCESS_CP15(c1, 0, c0, 0)
42#define CPACR __ACCESS_CP15(c1, 0, c0, 2)
43#define HCR __ACCESS_CP15(c1, 4, c1, 0)
44#define HDCR __ACCESS_CP15(c1, 4, c1, 1)
45#define HCPTR __ACCESS_CP15(c1, 4, c1, 2)
46#define HSTR __ACCESS_CP15(c1, 4, c1, 3)
47#define TTBCR __ACCESS_CP15(c2, 0, c0, 2)
48#define HTCR __ACCESS_CP15(c2, 4, c0, 2)
49#define VTCR __ACCESS_CP15(c2, 4, c1, 2)
50#define DACR __ACCESS_CP15(c3, 0, c0, 0)
51#define DFSR __ACCESS_CP15(c5, 0, c0, 0)
52#define IFSR __ACCESS_CP15(c5, 0, c0, 1)
53#define ADFSR __ACCESS_CP15(c5, 0, c1, 0)
54#define AIFSR __ACCESS_CP15(c5, 0, c1, 1)
55#define HSR __ACCESS_CP15(c5, 4, c2, 0)
56#define DFAR __ACCESS_CP15(c6, 0, c0, 0)
57#define IFAR __ACCESS_CP15(c6, 0, c0, 2)
58#define HDFAR __ACCESS_CP15(c6, 4, c0, 0)
59#define HIFAR __ACCESS_CP15(c6, 4, c0, 2)
60#define HPFAR __ACCESS_CP15(c6, 4, c0, 4)
61#define ICIALLUIS __ACCESS_CP15(c7, 0, c1, 0)
62#define BPIALLIS __ACCESS_CP15(c7, 0, c1, 6)
63#define ICIMVAU __ACCESS_CP15(c7, 0, c5, 1)
64#define ATS1CPR __ACCESS_CP15(c7, 0, c8, 0)
65#define TLBIALLIS __ACCESS_CP15(c8, 0, c3, 0)
66#define TLBIALL __ACCESS_CP15(c8, 0, c7, 0)
67#define TLBIALLNSNHIS __ACCESS_CP15(c8, 4, c3, 4)
68#define PRRR __ACCESS_CP15(c10, 0, c2, 0)
69#define NMRR __ACCESS_CP15(c10, 0, c2, 1)
70#define AMAIR0 __ACCESS_CP15(c10, 0, c3, 0)
71#define AMAIR1 __ACCESS_CP15(c10, 0, c3, 1)
72#define VBAR __ACCESS_CP15(c12, 0, c0, 0)
73#define CID __ACCESS_CP15(c13, 0, c0, 1)
74#define TID_URW __ACCESS_CP15(c13, 0, c0, 2)
75#define TID_URO __ACCESS_CP15(c13, 0, c0, 3)
76#define TID_PRIV __ACCESS_CP15(c13, 0, c0, 4)
77#define HTPIDR __ACCESS_CP15(c13, 4, c0, 2)
78#define CNTKCTL __ACCESS_CP15(c14, 0, c1, 0)
79#define CNTP_CTL __ACCESS_CP15(c14, 0, c2, 1)
80#define CNTV_CTL __ACCESS_CP15(c14, 0, c3, 1)
81#define CNTHCTL __ACCESS_CP15(c14, 4, c1, 0)
82
83#define VFP_FPEXC __ACCESS_VFP(FPEXC)
84
85
86#define read_sysreg_el0(r) read_sysreg(r##_EL0)
87#define write_sysreg_el0(v, r) write_sysreg(v, r##_EL0)
88
89#define SYS_CNTP_CTL_EL0 CNTP_CTL
90#define SYS_CNTP_CVAL_EL0 CNTP_CVAL
91#define SYS_CNTV_CTL_EL0 CNTV_CTL
92#define SYS_CNTV_CVAL_EL0 CNTV_CVAL
93
94#define cntvoff_el2 CNTVOFF
95#define cnthctl_el2 CNTHCTL
96
97void __timer_enable_traps(struct kvm_vcpu *vcpu);
98void __timer_disable_traps(struct kvm_vcpu *vcpu);
99
100void __vgic_v2_save_state(struct kvm_vcpu *vcpu);
101void __vgic_v2_restore_state(struct kvm_vcpu *vcpu);
102
103void __sysreg_save_state(struct kvm_cpu_context *ctxt);
104void __sysreg_restore_state(struct kvm_cpu_context *ctxt);
105
106void __vgic_v3_save_state(struct kvm_vcpu *vcpu);
107void __vgic_v3_restore_state(struct kvm_vcpu *vcpu);
108void __vgic_v3_activate_traps(struct kvm_vcpu *vcpu);
109void __vgic_v3_deactivate_traps(struct kvm_vcpu *vcpu);
110void __vgic_v3_save_aprs(struct kvm_vcpu *vcpu);
111void __vgic_v3_restore_aprs(struct kvm_vcpu *vcpu);
112
113asmlinkage void __vfp_save_state(struct vfp_hard_struct *vfp);
114asmlinkage void __vfp_restore_state(struct vfp_hard_struct *vfp);
115static inline bool __vfp_enabled(void)
116{
117 return !(read_sysreg(HCPTR) & (HCPTR_TCP(11) | HCPTR_TCP(10)));
118}
119
120void __hyp_text __banked_save_state(struct kvm_cpu_context *ctxt);
121void __hyp_text __banked_restore_state(struct kvm_cpu_context *ctxt);
122
123asmlinkage int __guest_enter(struct kvm_vcpu *vcpu,
124 struct kvm_cpu_context *host);
125asmlinkage int __hyp_do_panic(const char *, int, u32);
126
127#endif
128
