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_get_arg4(struct kvm_vcpu * vcpu)31 static inline unsigned long smccc_get_arg4(struct kvm_vcpu *vcpu)
32 {
33 return vcpu_get_reg(vcpu, 4);
34 }
35
smccc_get_arg5(struct kvm_vcpu * vcpu)36 static inline unsigned long smccc_get_arg5(struct kvm_vcpu *vcpu)
37 {
38 return vcpu_get_reg(vcpu, 5);
39 }
40
smccc_get_arg6(struct kvm_vcpu * vcpu)41 static inline unsigned long smccc_get_arg6(struct kvm_vcpu *vcpu)
42 {
43 return vcpu_get_reg(vcpu, 6);
44 }
45
smccc_set_retval(struct kvm_vcpu * vcpu,unsigned long a0,unsigned long a1,unsigned long a2,unsigned long a3)46 static inline void smccc_set_retval(struct kvm_vcpu *vcpu,
47 unsigned long a0,
48 unsigned long a1,
49 unsigned long a2,
50 unsigned long a3)
51 {
52 vcpu_set_reg(vcpu, 0, a0);
53 vcpu_set_reg(vcpu, 1, a1);
54 vcpu_set_reg(vcpu, 2, a2);
55 vcpu_set_reg(vcpu, 3, a3);
56 }
57
58 struct kvm_one_reg;
59
60 void kvm_arm_init_hypercalls(struct kvm *kvm);
61 void kvm_arm_teardown_hypercalls(struct kvm *kvm);
62 int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu);
63 int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
64 int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
65 int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
66
67 int kvm_vm_smccc_has_attr(struct kvm *kvm, struct kvm_device_attr *attr);
68 int kvm_vm_smccc_set_attr(struct kvm *kvm, struct kvm_device_attr *attr);
69
70 #endif
71