1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
 4 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
 5 */
 6
 7#ifndef __ARM_KVM_ASM_H__
 8#define __ARM_KVM_ASM_H__
 9
10#include <asm/virt.h>
11
12#define ARM_EXIT_WITH_ABORT_BIT  31
13#define ARM_EXCEPTION_CODE(x)	  ((x) & ~(1U << ARM_EXIT_WITH_ABORT_BIT))
14#define ARM_EXCEPTION_IS_TRAP(x)					\
15	(ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_PREF_ABORT	||	\
16	 ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_DATA_ABORT	||	\
17	 ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_HVC)
18#define ARM_ABORT_PENDING(x)	  !!((x) & (1U << ARM_EXIT_WITH_ABORT_BIT))
19
20#define ARM_EXCEPTION_RESET	  0
21#define ARM_EXCEPTION_UNDEFINED   1
22#define ARM_EXCEPTION_SOFTWARE    2
23#define ARM_EXCEPTION_PREF_ABORT  3
24#define ARM_EXCEPTION_DATA_ABORT  4
25#define ARM_EXCEPTION_IRQ	  5
26#define ARM_EXCEPTION_FIQ	  6
27#define ARM_EXCEPTION_HVC	  7
28#define ARM_EXCEPTION_HYP_GONE	  HVC_STUB_ERR
29/*
30 * The rr_lo_hi macro swaps a pair of registers depending on
31 * current endianness. It is used in conjunction with ldrd and strd
32 * instructions that load/store a 64-bit value from/to memory to/from
33 * a pair of registers which are used with the mrrc and mcrr instructions.
34 * If used with the ldrd/strd instructions, the a1 parameter is the first
35 * source/destination register and the a2 parameter is the second
36 * source/destination register. Note that the ldrd/strd instructions
37 * already swap the bytes within the words correctly according to the
38 * endianness setting, but the order of the registers need to be effectively
39 * swapped when used with the mrrc/mcrr instructions.
40 */
41#ifdef CONFIG_CPU_ENDIAN_BE8
42#define rr_lo_hi(a1, a2) a2, a1
43#else
44#define rr_lo_hi(a1, a2) a1, a2
45#endif
46
47#define kvm_ksym_ref(kva)	(kva)
48
49#ifndef __ASSEMBLY__
50struct kvm;
51struct kvm_vcpu;
52
53extern char __kvm_hyp_init[];
54extern char __kvm_hyp_init_end[];
55
56extern void __kvm_flush_vm_context(void);
57extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
58extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
59extern void __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu);
60
61extern void __kvm_timer_set_cntvoff(u32 cntvoff_low, u32 cntvoff_high);
62
63/* no VHE on 32-bit :( */
64static inline int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu) { BUG(); return 0; }
65
66extern int __kvm_vcpu_run_nvhe(struct kvm_vcpu *vcpu);
67
68extern void __init_stage2_translation(void);
69
70extern u64 __vgic_v3_get_ich_vtr_el2(void);
71extern u64 __vgic_v3_read_vmcr(void);
72extern void __vgic_v3_write_vmcr(u32 vmcr);
73extern void __vgic_v3_init_lrs(void);
74
75#endif
76
77#endif /* __ARM_KVM_ASM_H__ */