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