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52 lines
1.5 KiB
52 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2012,2013 - ARM Ltd |
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* Author: Marc Zyngier <[email protected]> |
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*/ |
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#ifndef __KVM_ARM_PSCI_H__ |
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#define __KVM_ARM_PSCI_H__ |
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#include <linux/kvm_host.h> |
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#include <uapi/linux/psci.h> |
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#define KVM_ARM_PSCI_0_1 PSCI_VERSION(0, 1) |
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#define KVM_ARM_PSCI_0_2 PSCI_VERSION(0, 2) |
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#define KVM_ARM_PSCI_1_0 PSCI_VERSION(1, 0) |
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#define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_0 |
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/* |
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* We need the KVM pointer independently from the vcpu as we can call |
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* this from HYP, and need to apply kern_hyp_va on it... |
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*/ |
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static inline int kvm_psci_version(struct kvm_vcpu *vcpu, struct kvm *kvm) |
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{ |
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/* |
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* Our PSCI implementation stays the same across versions from |
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* v0.2 onward, only adding the few mandatory functions (such |
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* as FEATURES with 1.0) that are required by newer |
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* revisions. It is thus safe to return the latest, unless |
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* userspace has instructed us otherwise. |
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*/ |
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if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features)) { |
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if (vcpu->kvm->arch.psci_version) |
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return vcpu->kvm->arch.psci_version; |
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return KVM_ARM_PSCI_LATEST; |
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} |
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return KVM_ARM_PSCI_0_1; |
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} |
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int kvm_psci_call(struct kvm_vcpu *vcpu); |
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struct kvm_one_reg; |
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int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu); |
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int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices); |
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int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); |
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int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); |
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#endif /* __KVM_ARM_PSCI_H__ */
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