Quelle  kvm_tlb.h   Sprache: C

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2025 Ventana Micro Systems Inc.
 */

#ifndef __RISCV_KVM_TLB_H_
#define __RISCV_KVM_TLB_H_

#include <linux/kvm_types.h>

enum kvm_riscv_hfence_type {
 KVM_RISCV_HFENCE_UNKNOWN = 0,
 KVM_RISCV_HFENCE_GVMA_VMID_GPA,
 KVM_RISCV_HFENCE_GVMA_VMID_ALL,
 KVM_RISCV_HFENCE_VVMA_ASID_GVA,
 KVM_RISCV_HFENCE_VVMA_ASID_ALL,
 KVM_RISCV_HFENCE_VVMA_GVA,
 KVM_RISCV_HFENCE_VVMA_ALL
};

struct kvm_riscv_hfence {
 enum kvm_riscv_hfence_type type;
 unsigned long asid;
 unsigned long vmid;
 unsigned long order;
 gpa_t addr;
 gpa_t size;
};

#define KVM_RISCV_VCPU_MAX_HFENCE 64

#define KVM_RISCV_GSTAGE_TLB_MIN_ORDER  12

void kvm_riscv_local_hfence_gvma_vmid_gpa(unsigned long vmid,
       gpa_t gpa, gpa_t gpsz,
       unsigned long order);
void kvm_riscv_local_hfence_gvma_vmid_all(unsigned long vmid);
void kvm_riscv_local_hfence_gvma_gpa(gpa_t gpa, gpa_t gpsz,
         unsigned long order);
void kvm_riscv_local_hfence_gvma_all(void);
void kvm_riscv_local_hfence_vvma_asid_gva(unsigned long vmid,
       unsigned long asid,
       unsigned long gva,
       unsigned long gvsz,
       unsigned long order);
void kvm_riscv_local_hfence_vvma_asid_all(unsigned long vmid,
       unsigned long asid);
void kvm_riscv_local_hfence_vvma_gva(unsigned long vmid,
         unsigned long gva, unsigned long gvsz,
         unsigned long order);
void kvm_riscv_local_hfence_vvma_all(unsigned long vmid);

void kvm_riscv_tlb_flush_process(struct kvm_vcpu *vcpu);

void kvm_riscv_fence_i_process(struct kvm_vcpu *vcpu);
void kvm_riscv_hfence_vvma_all_process(struct kvm_vcpu *vcpu);
void kvm_riscv_hfence_process(struct kvm_vcpu *vcpu);

void kvm_riscv_fence_i(struct kvm *kvm,
         unsigned long hbase, unsigned long hmask);
void kvm_riscv_hfence_gvma_vmid_gpa(struct kvm *kvm,
        unsigned long hbase, unsigned long hmask,
        gpa_t gpa, gpa_t gpsz,
        unsigned long order, unsigned long vmid);
void kvm_riscv_hfence_gvma_vmid_all(struct kvm *kvm,
        unsigned long hbase, unsigned long hmask,
        unsigned long vmid);
void kvm_riscv_hfence_vvma_asid_gva(struct kvm *kvm,
        unsigned long hbase, unsigned long hmask,
        unsigned long gva, unsigned long gvsz,
        unsigned long order, unsigned long asid,
        unsigned long vmid);
void kvm_riscv_hfence_vvma_asid_all(struct kvm *kvm,
        unsigned long hbase, unsigned long hmask,
        unsigned long asid, unsigned long vmid);
void kvm_riscv_hfence_vvma_gva(struct kvm *kvm,
          unsigned long hbase, unsigned long hmask,
          unsigned long gva, unsigned long gvsz,
          unsigned long order, unsigned long vmid);
void kvm_riscv_hfence_vvma_all(struct kvm *kvm,
          unsigned long hbase, unsigned long hmask,
          unsigned long vmid);

#endif