48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/* 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
|