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kvm_vcpu_sbi.h
/* SPDX-License-Identifier: GPL-2.0-only */ /** * Copyright (c) 2021 Western Digital Corporation or its affiliates. * * Authors: * Atish Patra <atish.patra@wdc.com> */ #ifndef __RISCV_KVM_VCPU_SBI_H__ #define __RISCV_KVM_VCPU_SBI_H__ #define KVM_SBI_IMPID 3 #define KVM_SBI_VERSION_MAJOR 2 #define KVM_SBI_VERSION_MINOR 0 enum kvm_riscv_sbi_ext_status { KVM_RISCV_SBI_EXT_STATUS_UNINITIALIZED, KVM_RISCV_SBI_EXT_STATUS_UNAVAILABLE, KVM_RISCV_SBI_EXT_STATUS_ENABLED, KVM_RISCV_SBI_EXT_STATUS_DISABLED, }; struct kvm_vcpu_sbi_context { int return_handled; enum kvm_riscv_sbi_ext_status ext_status[KVM_RISCV_SBI_EXT_MAX]; }; struct kvm_vcpu_sbi_return { unsigned long out_val; unsigned long err_val; struct kvm_cpu_trap *utrap; bool uexit; }; struct kvm_vcpu_sbi_extension { unsigned long extid_start; unsigned long extid_end; bool default_disabled; /** * SBI extension handler. It can be defined for a given extension or group of * extension. But it should always return linux error codes rather than SBI * specific error codes. */ int (*handler)(struct kvm_vcpu *vcpu, struct kvm_run *run, struct kvm_vcpu_sbi_return *retdata); /* Extension specific probe function */ unsigned long (*probe)(struct kvm_vcpu *vcpu); }; void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run); void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu, struct kvm_run *run, u32 type, u64 flags); int kvm_riscv_vcpu_sbi_return(struct kvm_vcpu *vcpu, struct kvm_run *run); int kvm_riscv_vcpu_set_reg_sbi_ext(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); int kvm_riscv_vcpu_get_reg_sbi_ext(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); int kvm_riscv_vcpu_set_reg_sbi(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); int kvm_riscv_vcpu_get_reg_sbi(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); const struct kvm_vcpu_sbi_extension *kvm_vcpu_sbi_find_ext( struct kvm_vcpu *vcpu, unsigned long extid); bool riscv_vcpu_supports_sbi_ext(struct kvm_vcpu *vcpu, int idx); int kvm_riscv_vcpu_sbi_ecall(struct kvm_vcpu *vcpu, struct kvm_run *run); void kvm_riscv_vcpu_sbi_init(struct kvm_vcpu *vcpu); int kvm_riscv_vcpu_get_reg_sbi_sta(struct kvm_vcpu *vcpu, unsigned long reg_num, unsigned long *reg_val); int kvm_riscv_vcpu_set_reg_sbi_sta(struct kvm_vcpu *vcpu, unsigned long reg_num, unsigned long reg_val); #ifdef CONFIG_RISCV_SBI_V01 extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_v01; #endif extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_base; extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_time; extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_ipi; extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_rfence; extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_srst; extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_hsm; extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_dbcn; extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_sta; extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_experimental; extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_vendor; #ifdef CONFIG_RISCV_PMU_SBI extern const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_pmu; #endif #endif /* __RISCV_KVM_VCPU_SBI_H__ */
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