128 lines
4.5 KiB
C
128 lines
4.5 KiB
C
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/*
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* Copyright (C) 2015 - ARM Ltd
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ARM_KVM_HYP_H__
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#define __ARM_KVM_HYP_H__
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#include <linux/compiler.h>
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#include <linux/kvm_host.h>
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#include <asm/cp15.h>
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#include <asm/kvm_mmu.h>
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#include <asm/vfp.h>
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#define __hyp_text __section(.hyp.text) notrace
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#define __ACCESS_VFP(CRn) \
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"mrc", "mcr", __stringify(p10, 7, %0, CRn, cr0, 0), u32
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#define write_special(v, r) \
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asm volatile("msr " __stringify(r) ", %0" : : "r" (v))
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#define read_special(r) ({ \
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u32 __val; \
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asm volatile("mrs %0, " __stringify(r) : "=r" (__val)); \
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__val; \
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})
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#define TTBR0 __ACCESS_CP15_64(0, c2)
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#define TTBR1 __ACCESS_CP15_64(1, c2)
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#define VTTBR __ACCESS_CP15_64(6, c2)
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#define PAR __ACCESS_CP15_64(0, c7)
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#define CNTV_CVAL __ACCESS_CP15_64(3, c14)
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#define CNTVOFF __ACCESS_CP15_64(4, c14)
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#define MIDR __ACCESS_CP15(c0, 0, c0, 0)
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#define CSSELR __ACCESS_CP15(c0, 2, c0, 0)
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#define VPIDR __ACCESS_CP15(c0, 4, c0, 0)
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#define VMPIDR __ACCESS_CP15(c0, 4, c0, 5)
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#define SCTLR __ACCESS_CP15(c1, 0, c0, 0)
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#define CPACR __ACCESS_CP15(c1, 0, c0, 2)
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#define HCR __ACCESS_CP15(c1, 4, c1, 0)
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#define HDCR __ACCESS_CP15(c1, 4, c1, 1)
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#define HCPTR __ACCESS_CP15(c1, 4, c1, 2)
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#define HSTR __ACCESS_CP15(c1, 4, c1, 3)
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#define TTBCR __ACCESS_CP15(c2, 0, c0, 2)
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#define HTCR __ACCESS_CP15(c2, 4, c0, 2)
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#define VTCR __ACCESS_CP15(c2, 4, c1, 2)
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#define DACR __ACCESS_CP15(c3, 0, c0, 0)
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#define DFSR __ACCESS_CP15(c5, 0, c0, 0)
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#define IFSR __ACCESS_CP15(c5, 0, c0, 1)
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#define ADFSR __ACCESS_CP15(c5, 0, c1, 0)
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#define AIFSR __ACCESS_CP15(c5, 0, c1, 1)
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#define HSR __ACCESS_CP15(c5, 4, c2, 0)
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#define DFAR __ACCESS_CP15(c6, 0, c0, 0)
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#define IFAR __ACCESS_CP15(c6, 0, c0, 2)
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#define HDFAR __ACCESS_CP15(c6, 4, c0, 0)
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#define HIFAR __ACCESS_CP15(c6, 4, c0, 2)
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#define HPFAR __ACCESS_CP15(c6, 4, c0, 4)
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#define ICIALLUIS __ACCESS_CP15(c7, 0, c1, 0)
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#define ATS1CPR __ACCESS_CP15(c7, 0, c8, 0)
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#define TLBIALLIS __ACCESS_CP15(c8, 0, c3, 0)
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#define TLBIALL __ACCESS_CP15(c8, 0, c7, 0)
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#define TLBIALLNSNHIS __ACCESS_CP15(c8, 4, c3, 4)
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#define PRRR __ACCESS_CP15(c10, 0, c2, 0)
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#define NMRR __ACCESS_CP15(c10, 0, c2, 1)
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#define AMAIR0 __ACCESS_CP15(c10, 0, c3, 0)
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#define AMAIR1 __ACCESS_CP15(c10, 0, c3, 1)
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#define VBAR __ACCESS_CP15(c12, 0, c0, 0)
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#define CID __ACCESS_CP15(c13, 0, c0, 1)
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#define TID_URW __ACCESS_CP15(c13, 0, c0, 2)
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#define TID_URO __ACCESS_CP15(c13, 0, c0, 3)
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#define TID_PRIV __ACCESS_CP15(c13, 0, c0, 4)
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#define HTPIDR __ACCESS_CP15(c13, 4, c0, 2)
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#define CNTKCTL __ACCESS_CP15(c14, 0, c1, 0)
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#define CNTV_CTL __ACCESS_CP15(c14, 0, c3, 1)
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#define CNTHCTL __ACCESS_CP15(c14, 4, c1, 0)
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#define VFP_FPEXC __ACCESS_VFP(FPEXC)
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/* AArch64 compatibility macros, only for the timer so far */
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#define read_sysreg_el0(r) read_sysreg(r##_el0)
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#define write_sysreg_el0(v, r) write_sysreg(v, r##_el0)
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#define cntv_ctl_el0 CNTV_CTL
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#define cntv_cval_el0 CNTV_CVAL
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#define cntvoff_el2 CNTVOFF
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#define cnthctl_el2 CNTHCTL
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void __timer_save_state(struct kvm_vcpu *vcpu);
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void __timer_restore_state(struct kvm_vcpu *vcpu);
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void __vgic_v2_save_state(struct kvm_vcpu *vcpu);
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void __vgic_v2_restore_state(struct kvm_vcpu *vcpu);
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void __sysreg_save_state(struct kvm_cpu_context *ctxt);
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void __sysreg_restore_state(struct kvm_cpu_context *ctxt);
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void __vgic_v3_save_state(struct kvm_vcpu *vcpu);
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void __vgic_v3_restore_state(struct kvm_vcpu *vcpu);
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void asmlinkage __vfp_save_state(struct vfp_hard_struct *vfp);
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void asmlinkage __vfp_restore_state(struct vfp_hard_struct *vfp);
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static inline bool __vfp_enabled(void)
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{
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return !(read_sysreg(HCPTR) & (HCPTR_TCP(11) | HCPTR_TCP(10)));
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}
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void __hyp_text __banked_save_state(struct kvm_cpu_context *ctxt);
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void __hyp_text __banked_restore_state(struct kvm_cpu_context *ctxt);
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int asmlinkage __guest_enter(struct kvm_vcpu *vcpu,
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struct kvm_cpu_context *host);
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int asmlinkage __hyp_do_panic(const char *, int, u32);
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#endif /* __ARM_KVM_HYP_H__ */
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