1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2022 SiFive
4 *
5 * Authors:
6 *     Vincent Chen <vincent.chen@sifive.com>
7 *     Greentime Hu <greentime.hu@sifive.com>
8 */
9
10#ifndef __KVM_VCPU_RISCV_VECTOR_H
11#define __KVM_VCPU_RISCV_VECTOR_H
12
13#include <linux/types.h>
14
15#ifdef CONFIG_RISCV_ISA_V
16#include <asm/vector.h>
17#include <asm/kvm_host.h>
18
19static __always_inline void __kvm_riscv_vector_save(struct kvm_cpu_context *context)
20{
21	__riscv_v_vstate_save(&context->vector, context->vector.datap);
22}
23
24static __always_inline void __kvm_riscv_vector_restore(struct kvm_cpu_context *context)
25{
26	__riscv_v_vstate_restore(&context->vector, context->vector.datap);
27}
28
29void kvm_riscv_vcpu_vector_reset(struct kvm_vcpu *vcpu);
30void kvm_riscv_vcpu_guest_vector_save(struct kvm_cpu_context *cntx,
31				      unsigned long *isa);
32void kvm_riscv_vcpu_guest_vector_restore(struct kvm_cpu_context *cntx,
33					 unsigned long *isa);
34void kvm_riscv_vcpu_host_vector_save(struct kvm_cpu_context *cntx);
35void kvm_riscv_vcpu_host_vector_restore(struct kvm_cpu_context *cntx);
36int kvm_riscv_vcpu_alloc_vector_context(struct kvm_vcpu *vcpu,
37					struct kvm_cpu_context *cntx);
38void kvm_riscv_vcpu_free_vector_context(struct kvm_vcpu *vcpu);
39#else
40
41struct kvm_cpu_context;
42
43static inline void kvm_riscv_vcpu_vector_reset(struct kvm_vcpu *vcpu)
44{
45}
46
47static inline void kvm_riscv_vcpu_guest_vector_save(struct kvm_cpu_context *cntx,
48						    unsigned long *isa)
49{
50}
51
52static inline void kvm_riscv_vcpu_guest_vector_restore(struct kvm_cpu_context *cntx,
53						       unsigned long *isa)
54{
55}
56
57static inline void kvm_riscv_vcpu_host_vector_save(struct kvm_cpu_context *cntx)
58{
59}
60
61static inline void kvm_riscv_vcpu_host_vector_restore(struct kvm_cpu_context *cntx)
62{
63}
64
65static inline int kvm_riscv_vcpu_alloc_vector_context(struct kvm_vcpu *vcpu,
66						      struct kvm_cpu_context *cntx)
67{
68	return 0;
69}
70
71static inline void kvm_riscv_vcpu_free_vector_context(struct kvm_vcpu *vcpu)
72{
73}
74#endif
75
76int kvm_riscv_vcpu_get_reg_vector(struct kvm_vcpu *vcpu,
77				  const struct kvm_one_reg *reg);
78int kvm_riscv_vcpu_set_reg_vector(struct kvm_vcpu *vcpu,
79				  const struct kvm_one_reg *reg);
80#endif
81