| /* |
| * Copyright (C) 2015 - ARM Ltd |
| * Author: Marc Zyngier <marc.zyngier@arm.com> |
| * |
| * 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 <http://www.gnu.org/licenses/>. |
| */ |
| |
| #ifndef __ARM_KVM_HYP_H__ |
| #define __ARM_KVM_HYP_H__ |
| |
| #include <linux/compiler.h> |
| #include <linux/kvm_host.h> |
| #include <asm/cp15.h> |
| #include <asm/kvm_mmu.h> |
| #include <asm/vfp.h> |
| |
| #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 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_save_state(struct kvm_vcpu *vcpu); |
| void __timer_restore_state(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 asmlinkage __vfp_save_state(struct vfp_hard_struct *vfp); |
| void asmlinkage __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); |
| |
| int asmlinkage __guest_enter(struct kvm_vcpu *vcpu, |
| struct kvm_cpu_context *host); |
| int asmlinkage __hyp_do_panic(const char *, int, u32); |
| |
| #endif /* __ARM_KVM_HYP_H__ */ |
