1 /* 2 * Copyright (C) 2012,2013 - ARM Ltd 3 * Author: Marc Zyngier <marc.zyngier@arm.com> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef __ARM_KVM_ASM_H__ 19 #define __ARM_KVM_ASM_H__ 20 21 #include <asm/virt.h> 22 23 #define ARM_EXIT_WITH_SERROR_BIT 31 24 #define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_SERROR_BIT)) 25 #define ARM_SERROR_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_SERROR_BIT)) 26 27 #define ARM_EXCEPTION_IRQ 0 28 #define ARM_EXCEPTION_EL1_SERROR 1 29 #define ARM_EXCEPTION_TRAP 2 30 /* The hyp-stub will return this for any kvm_call_hyp() call */ 31 #define ARM_EXCEPTION_HYP_GONE HVC_STUB_ERR 32 33 #define KVM_ARM64_DEBUG_DIRTY_SHIFT 0 34 #define KVM_ARM64_DEBUG_DIRTY (1 << KVM_ARM64_DEBUG_DIRTY_SHIFT) 35 36 /* Translate a kernel address of @sym into its equivalent linear mapping */ 37 #define kvm_ksym_ref(sym) \ 38 ({ \ 39 void *val = &sym; \ 40 if (!is_kernel_in_hyp_mode()) \ 41 val = phys_to_virt((u64)&sym - kimage_voffset); \ 42 val; \ 43 }) 44 45 #ifndef __ASSEMBLY__ 46 struct kvm; 47 struct kvm_vcpu; 48 49 extern char __kvm_hyp_init[]; 50 extern char __kvm_hyp_init_end[]; 51 52 extern char __kvm_hyp_vector[]; 53 54 extern void __kvm_flush_vm_context(void); 55 extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa); 56 extern void __kvm_tlb_flush_vmid(struct kvm *kvm); 57 extern void __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu); 58 59 extern void __kvm_timer_set_cntvoff(u32 cntvoff_low, u32 cntvoff_high); 60 61 extern int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu); 62 63 extern int __kvm_vcpu_run_nvhe(struct kvm_vcpu *vcpu); 64 65 extern u64 __vgic_v3_get_ich_vtr_el2(void); 66 extern u64 __vgic_v3_read_vmcr(void); 67 extern void __vgic_v3_write_vmcr(u32 vmcr); 68 extern void __vgic_v3_init_lrs(void); 69 70 extern u32 __kvm_get_mdcr_el2(void); 71 72 extern u32 __init_stage2_translation(void); 73 74 #else /* __ASSEMBLY__ */ 75 76 .macro get_host_ctxt reg, tmp 77 adr_l \reg, kvm_host_cpu_state 78 mrs \tmp, tpidr_el2 79 add \reg, \reg, \tmp 80 .endm 81 82 .macro get_vcpu_ptr vcpu, ctxt 83 get_host_ctxt \ctxt, \vcpu 84 ldr \vcpu, [\ctxt, #HOST_CONTEXT_VCPU] 85 kern_hyp_va \vcpu 86 .endm 87 88 #endif 89 90 #endif /* __ARM_KVM_ASM_H__ */ 91