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
19 static __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
24 static __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
29 void kvm_riscv_vcpu_vector_reset(struct kvm_vcpu *vcpu);
30 void kvm_riscv_vcpu_guest_vector_save(struct kvm_cpu_context *cntx,
31 unsigned long *isa);
32 void kvm_riscv_vcpu_guest_vector_restore(struct kvm_cpu_context *cntx,
33 unsigned long *isa);
34 void kvm_riscv_vcpu_host_vector_save(struct kvm_cpu_context *cntx);
35 void kvm_riscv_vcpu_host_vector_restore(struct kvm_cpu_context *cntx);
36 int kvm_riscv_vcpu_alloc_vector_context(struct kvm_vcpu *vcpu,
37 struct kvm_cpu_context *cntx);
38 void kvm_riscv_vcpu_free_vector_context(struct kvm_vcpu *vcpu);
39 #else
40
41 struct kvm_cpu_context;
42
43 static inline void kvm_riscv_vcpu_vector_reset(struct kvm_vcpu *vcpu)
44 {
45 }
46
47 static inline void kvm_riscv_vcpu_guest_vector_save(struct kvm_cpu_context *cntx,
48 unsigned long *isa)
49 {
50 }
51
52 static inline void kvm_riscv_vcpu_guest_vector_restore(struct kvm_cpu_context *cntx,
53 unsigned long *isa)
54 {
55 }
56
57 static inline void kvm_riscv_vcpu_host_vector_save(struct kvm_cpu_context *cntx)
58 {
59 }
60
61 static inline void kvm_riscv_vcpu_host_vector_restore(struct kvm_cpu_context *cntx)
62 {
63 }
64
65 static inline int kvm_riscv_vcpu_alloc_vector_context(struct kvm_vcpu *vcpu,
66 struct kvm_cpu_context *cntx)
67 {
68 return 0;
69 }
70
71 static inline void kvm_riscv_vcpu_free_vector_context(struct kvm_vcpu *vcpu)
72 {
73 }
74 #endif
75
76 int kvm_riscv_vcpu_get_reg_vector(struct kvm_vcpu *vcpu,
77 const struct kvm_one_reg *reg);
78 int kvm_riscv_vcpu_set_reg_vector(struct kvm_vcpu *vcpu,
79 const struct kvm_one_reg *reg);
80 #endif
81
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