1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2021 Western Digital Corporation or its affiliates.
6 * Atish Patra <atish.patra@wdc.com>
9 #ifndef __RISCV_KVM_VCPU_SBI_H__
10 #define __RISCV_KVM_VCPU_SBI_H__
12 #define KVM_SBI_IMPID 3
14 #define KVM_SBI_VERSION_MAJOR 1
15 #define KVM_SBI_VERSION_MINOR 0
17 enum kvm_riscv_sbi_ext_status {
18 KVM_RISCV_SBI_EXT_AVAILABLE,
19 KVM_RISCV_SBI_EXT_UNAVAILABLE,
22 struct kvm_vcpu_sbi_context {
24 enum kvm_riscv_sbi_ext_status ext_status[KVM_RISCV_SBI_EXT_MAX];
27 struct kvm_vcpu_sbi_return {
28 unsigned long out_val;
29 unsigned long err_val;
30 struct kvm_cpu_trap *utrap;
34 struct kvm_vcpu_sbi_extension {
35 unsigned long extid_start;
36 unsigned long extid_end;
38 * SBI extension handler. It can be defined for a given extension or group of
39 * extension. But it should always return linux error codes rather than SBI
40 * specific error codes.
42 int (*handler)(struct kvm_vcpu *vcpu, struct kvm_run *run,
43 struct kvm_vcpu_sbi_return *retdata);
45 /* Extension specific probe function */
46 unsigned long (*probe)(struct kvm_vcpu *vcpu);
49 void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run);
50 void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu,
53 int kvm_riscv_vcpu_sbi_return(struct kvm_vcpu *vcpu, struct kvm_run *run);
54 int kvm_riscv_vcpu_set_reg_sbi_ext(struct kvm_vcpu *vcpu,
55 const struct kvm_one_reg *reg);
56 int kvm_riscv_vcpu_get_reg_sbi_ext(struct kvm_vcpu *vcpu,
57 const struct kvm_one_reg *reg);
58 const struct kvm_vcpu_sbi_extension *kvm_vcpu_sbi_find_ext(
59 struct kvm_vcpu *vcpu, unsigned long extid);
60 int kvm_riscv_vcpu_sbi_ecall(struct kvm_vcpu *vcpu, struct kvm_run *run);
62 #ifdef CONFIG_RISCV_SBI_V01
63 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_v01;
65 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_base;
66 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_time;
67 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_ipi;
68 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_rfence;
69 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_srst;
70 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_hsm;
71 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental;
72 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor;
74 #endif /* __RISCV_KVM_VCPU_SBI_H__ */