| /* 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 |
