/* * Copyright (C) 2015 - ARM Ltd * Author: Marc Zyngier * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #ifndef __ARM_KVM_HYP_H__ #define __ARM_KVM_HYP_H__ #include #include #include #include #define __hyp_text __section(.hyp.text) notrace #define __ACCESS_VFP(CRn) \ "mrc", "mcr", __stringify(p10, 7, %0, CRn, cr0, 0), u32 #define write_special(v, r) \ asm volatile("msr " __stringify(r) ", %0" : : "r" (v)) #define read_special(r) ({ \ u32 __val; \ asm volatile("mrs %0, " __stringify(r) : "=r" (__val)); \ __val; \ }) #define TTBR0 __ACCESS_CP15_64(0, c2) #define TTBR1 __ACCESS_CP15_64(1, c2) #define VTTBR __ACCESS_CP15_64(6, c2) #define PAR __ACCESS_CP15_64(0, c7) #define CNTV_CVAL __ACCESS_CP15_64(3, c14) #define CNTVOFF __ACCESS_CP15_64(4, c14) #define MIDR __ACCESS_CP15(c0, 0, c0, 0) #define CSSELR __ACCESS_CP15(c0, 2, c0, 0) #define VPIDR __ACCESS_CP15(c0, 4, c0, 0) #define VMPIDR __ACCESS_CP15(c0, 4, c0, 5) #define SCTLR __ACCESS_CP15(c1, 0, c0, 0) #define CPACR __ACCESS_CP15(c1, 0, c0, 2) #define HCR __ACCESS_CP15(c1, 4, c1, 0) #define HDCR __ACCESS_CP15(c1, 4, c1, 1) #define HCPTR __ACCESS_CP15(c1, 4, c1, 2) #define HSTR __ACCESS_CP15(c1, 4, c1, 3) #define TTBCR __ACCESS_CP15(c2, 0, c0, 2) #define HTCR __ACCESS_CP15(c2, 4, c0, 2) #define VTCR __ACCESS_CP15(c2, 4, c1, 2) #define DACR __ACCESS_CP15(c3, 0, c0, 0) #define DFSR __ACCESS_CP15(c5, 0, c0, 0) #define IFSR __ACCESS_CP15(c5, 0, c0, 1) #define ADFSR __ACCESS_CP15(c5, 0, c1, 0) #define AIFSR __ACCESS_CP15(c5, 0, c1, 1) #define HSR __ACCESS_CP15(c5, 4, c2, 0) #define DFAR __ACCESS_CP15(c6, 0, c0, 0) #define IFAR __ACCESS_CP15(c6, 0, c0, 2) #define HDFAR __ACCESS_CP15(c6, 4, c0, 0) #define HIFAR __ACCESS_CP15(c6, 4, c0, 2) #define HPFAR __ACCESS_CP15(c6, 4, c0, 4) #define ICIALLUIS __ACCESS_CP15(c7, 0, c1, 0) #define BPIALLIS __ACCESS_CP15(c7, 0, c1, 6) #define ICIMVAU __ACCESS_CP15(c7, 0, c5, 1) #define ATS1CPR __ACCESS_CP15(c7, 0, c8, 0) #define TLBIALLIS __ACCESS_CP15(c8, 0, c3, 0) #define TLBIALL __ACCESS_CP15(c8, 0, c7, 0) #define TLBIALLNSNHIS __ACCESS_CP15(c8, 4, c3, 4) #define PRRR __ACCESS_CP15(c10, 0, c2, 0) #define NMRR __ACCESS_CP15(c10, 0, c2, 1) #define AMAIR0 __ACCESS_CP15(c10, 0, c3, 0) #define AMAIR1 __ACCESS_CP15(c10, 0, c3, 1) #define VBAR __ACCESS_CP15(c12, 0, c0, 0) #define CID __ACCESS_CP15(c13, 0, c0, 1) #define TID_URW __ACCESS_CP15(c13, 0, c0, 2) #define TID_URO __ACCESS_CP15(c13, 0, c0, 3) #define TID_PRIV __ACCESS_CP15(c13, 0, c0, 4) #define HTPIDR __ACCESS_CP15(c13, 4, c0, 2) #define CNTKCTL __ACCESS_CP15(c14, 0, c1, 0) #define CNTV_CTL __ACCESS_CP15(c14, 0, c3, 1) #define CNTHCTL __ACCESS_CP15(c14, 4, c1, 0) #define VFP_FPEXC __ACCESS_VFP(FPEXC) /* AArch64 compatibility macros, only for the timer so far */ #define read_sysreg_el0(r) read_sysreg(r##_el0) #define write_sysreg_el0(v, r) write_sysreg(v, r##_el0) #define cntv_ctl_el0 CNTV_CTL #define cntv_cval_el0 CNTV_CVAL #define cntvoff_el2 CNTVOFF #define cnthctl_el2 CNTHCTL void __timer_enable_traps(struct kvm_vcpu *vcpu); void __timer_disable_traps(struct kvm_vcpu *vcpu); void __vgic_v2_save_state(struct kvm_vcpu *vcpu); void __vgic_v2_restore_state(struct kvm_vcpu *vcpu); void __sysreg_save_state(struct kvm_cpu_context *ctxt); void __sysreg_restore_state(struct kvm_cpu_context *ctxt); void __vgic_v3_save_state(struct kvm_vcpu *vcpu); void __vgic_v3_restore_state(struct kvm_vcpu *vcpu); void __vgic_v3_activate_traps(struct kvm_vcpu *vcpu); void __vgic_v3_deactivate_traps(struct kvm_vcpu *vcpu); void __vgic_v3_save_aprs(struct kvm_vcpu *vcpu); void __vgic_v3_restore_aprs(struct kvm_vcpu *vcpu); asmlinkage void __vfp_save_state(struct vfp_hard_struct *vfp); asmlinkage void __vfp_restore_state(struct vfp_hard_struct *vfp); static inline bool __vfp_enabled(void) { return !(read_sysreg(HCPTR) & (HCPTR_TCP(11) | HCPTR_TCP(10))); } void __hyp_text __banked_save_state(struct kvm_cpu_context *ctxt); void __hyp_text __banked_restore_state(struct kvm_cpu_context *ctxt); asmlinkage int __guest_enter(struct kvm_vcpu *vcpu, struct kvm_cpu_context *host); asmlinkage int __hyp_do_panic(const char *, int, u32); #endif /* __ARM_KVM_HYP_H__ */