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__ 50 struct kvm; 51 struct kvm_vcpu; 52 53 extern char __kvm_hyp_init[]; 54 extern char __kvm_hyp_init_end[]; 55 56 extern void __kvm_flush_vm_context(void); 57 extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa); 58 extern void __kvm_tlb_flush_vmid(struct kvm *kvm); 59 extern void __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu); 60 61 extern void __kvm_timer_set_cntvoff(u32 cntvoff_low, u32 cntvoff_high); 62 63 /* no VHE on 32-bit :( */ kvm_vcpu_run_vhe(struct kvm_vcpu * vcpu)64static inline int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu) { BUG(); return 0; } 65 66 extern int __kvm_vcpu_run_nvhe(struct kvm_vcpu *vcpu); 67 68 extern void __init_stage2_translation(void); 69 70 extern u64 __vgic_v3_get_ich_vtr_el2(void); 71 extern u64 __vgic_v3_read_vmcr(void); 72 extern void __vgic_v3_write_vmcr(u32 vmcr); 73 extern void __vgic_v3_init_lrs(void); 74 75 #endif 76 77 #endif /* __ARM_KVM_ASM_H__ */ 78
