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
9 int kvm_smccc_call_handler(struct kvm_vcpu *vcpu);
10
smccc_get_function(struct kvm_vcpu * vcpu)11 static inline u32 smccc_get_function(struct kvm_vcpu *vcpu)
12 {
13 return vcpu_get_reg(vcpu, 0);
14 }
15
smccc_get_arg1(struct kvm_vcpu * vcpu)16 static inline unsigned long smccc_get_arg1(struct kvm_vcpu *vcpu)
17 {
18 return vcpu_get_reg(vcpu, 1);
19 }
20
smccc_get_arg2(struct kvm_vcpu * vcpu)21 static inline unsigned long smccc_get_arg2(struct kvm_vcpu *vcpu)
22 {
23 return vcpu_get_reg(vcpu, 2);
24 }
25
smccc_get_arg3(struct kvm_vcpu * vcpu)26 static inline unsigned long smccc_get_arg3(struct kvm_vcpu *vcpu)
27 {
28 return vcpu_get_reg(vcpu, 3);
29 }
30
smccc_set_retval(struct kvm_vcpu * vcpu,unsigned long a0,unsigned long a1,unsigned long a2,unsigned long a3)31 static 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
43 struct kvm_one_reg;
44
45 void kvm_arm_init_hypercalls(struct kvm *kvm);
46 void kvm_arm_teardown_hypercalls(struct kvm *kvm);
47 int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu);
48 int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
49 int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
50 int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
51
52 int kvm_vm_smccc_has_attr(struct kvm *kvm, struct kvm_device_attr *attr);
53 int kvm_vm_smccc_set_attr(struct kvm *kvm, struct kvm_device_attr *attr);
54
55 #endif
56
