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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2022 Ventana Micro Systems Inc.
*/
#ifndef __KVM_VCPU_RISCV_INSN_H
#define __KVM_VCPU_RISCV_INSN_H
struct kvm_vcpu;
struct kvm_run;
struct kvm_cpu_trap;
struct kvm_mmio_decode {
unsigned long insn;
int insn_len;
int len;
int shift;
int return_handled;
};
struct kvm_csr_decode {
unsigned long insn;
int return_handled;
};
/* Return values used by function emulating a particular instruction */
enum kvm_insn_return {
KVM_INSN_EXIT_TO_USER_SPACE = 0,
KVM_INSN_CONTINUE_NEXT_SEPC,
KVM_INSN_CONTINUE_SAME_SEPC,
KVM_INSN_ILLEGAL_TRAP,
KVM_INSN_VIRTUAL_TRAP
};
void kvm_riscv_vcpu_wfi(struct kvm_vcpu *vcpu);
int kvm_riscv_vcpu_csr_return(struct kvm_vcpu *vcpu, struct kvm_run *run);
int kvm_riscv_vcpu_virtual_insn(struct kvm_vcpu *vcpu, struct kvm_run *run,
struct kvm_cpu_trap *trap);
int kvm_riscv_vcpu_mmio_load(struct kvm_vcpu *vcpu, struct kvm_run *run,
unsigned long fault_addr,
unsigned long htinst);
int kvm_riscv_vcpu_mmio_store(struct kvm_vcpu *vcpu, struct kvm_run *run,
unsigned long fault_addr,
unsigned long htinst);
int kvm_riscv_vcpu_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run);
#endif