1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /** 3 * Copyright (c) 2021 Western Digital Corporation or its affiliates. 4 * 5 * Authors: 6 * Atish Patra <atish.patra@wdc.com> 7 */ 8 9 #ifndef __RISCV_KVM_VCPU_SBI_H__ 10 #define __RISCV_KVM_VCPU_SBI_H__ 11 12 #define KVM_SBI_IMPID 3 13 14 #define KVM_SBI_VERSION_MAJOR 1 15 #define KVM_SBI_VERSION_MINOR 0 16 17 struct kvm_vcpu_sbi_context { 18 int return_handled; 19 }; 20 21 struct kvm_vcpu_sbi_extension { 22 unsigned long extid_start; 23 unsigned long extid_end; 24 /** 25 * SBI extension handler. It can be defined for a given extension or group of 26 * extension. But it should always return linux error codes rather than SBI 27 * specific error codes. 28 */ 29 int (*handler)(struct kvm_vcpu *vcpu, struct kvm_run *run, 30 unsigned long *out_val, struct kvm_cpu_trap *utrap, 31 bool *exit); 32 }; 33 34 void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run); 35 void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu, 36 struct kvm_run *run, 37 u32 type, u64 flags); 38 int kvm_riscv_vcpu_sbi_return(struct kvm_vcpu *vcpu, struct kvm_run *run); 39 const struct kvm_vcpu_sbi_extension *kvm_vcpu_sbi_find_ext(unsigned long extid); 40 int kvm_riscv_vcpu_sbi_ecall(struct kvm_vcpu *vcpu, struct kvm_run *run); 41 42 #ifdef CONFIG_RISCV_SBI_V01 43 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_v01; 44 #endif 45 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_base; 46 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_time; 47 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_ipi; 48 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_rfence; 49 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_srst; 50 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_hsm; 51 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental; 52 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor; 53 54 #endif /* __RISCV_KVM_VCPU_SBI_H__ */ 55