1/* SPDX-License-Identifier: GPL-2.0 */
 2/* Copyright (C) 2019 Arm Ltd. */
 3
 4#ifndef __KVM_ARM_HYPERCALLS_H
 5#define __KVM_ARM_HYPERCALLS_H
 6
 7#include <asm/kvm_emulate.h>
 8
 9int kvm_smccc_call_handler(struct kvm_vcpu *vcpu);
10
11static inline u32 smccc_get_function(struct kvm_vcpu *vcpu)
12{
13	return vcpu_get_reg(vcpu, 0);
14}
15
16static inline unsigned long smccc_get_arg1(struct kvm_vcpu *vcpu)
17{
18	return vcpu_get_reg(vcpu, 1);
19}
20
21static inline unsigned long smccc_get_arg2(struct kvm_vcpu *vcpu)
22{
23	return vcpu_get_reg(vcpu, 2);
24}
25
26static inline unsigned long smccc_get_arg3(struct kvm_vcpu *vcpu)
27{
28	return vcpu_get_reg(vcpu, 3);
29}
30
31static inline void smccc_set_retval(struct kvm_vcpu *vcpu,
32				    unsigned long a0,
33				    unsigned long a1,
34				    unsigned long a2,
35				    unsigned long a3)
36{
37	vcpu_set_reg(vcpu, 0, a0);
38	vcpu_set_reg(vcpu, 1, a1);
39	vcpu_set_reg(vcpu, 2, a2);
40	vcpu_set_reg(vcpu, 3, a3);
41}
42
43struct kvm_one_reg;
44
45void kvm_arm_init_hypercalls(struct kvm *kvm);
46void kvm_arm_teardown_hypercalls(struct kvm *kvm);
47int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu);
48int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
49int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
50int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
51
52int kvm_vm_smccc_has_attr(struct kvm *kvm, struct kvm_device_attr *attr);
53int kvm_vm_smccc_set_attr(struct kvm *kvm, struct kvm_device_attr *attr);
54
55#endif