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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2012,2013 - ARM Ltd
4 * Author: Marc Zyngier <marc.zyngier@arm.com>
5 */
6
7#ifndef __KVM_ARM_PSCI_H__
8#define __KVM_ARM_PSCI_H__
9
10#include <linux/kvm_host.h>
11#include <uapi/linux/psci.h>
12
13#define KVM_ARM_PSCI_0_1 PSCI_VERSION(0, 1)
14#define KVM_ARM_PSCI_0_2 PSCI_VERSION(0, 2)
15#define KVM_ARM_PSCI_1_0 PSCI_VERSION(1, 0)
16#define KVM_ARM_PSCI_1_1 PSCI_VERSION(1, 1)
17
18#define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_1
19
20static inline int kvm_psci_version(struct kvm_vcpu *vcpu)
21{
22 /*
23 * Our PSCI implementation stays the same across versions from
24 * v0.2 onward, only adding the few mandatory functions (such
25 * as FEATURES with 1.0) that are required by newer
26 * revisions. It is thus safe to return the latest, unless
27 * userspace has instructed us otherwise.
28 */
29 if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features)) {
30 if (vcpu->kvm->arch.psci_version)
31 return vcpu->kvm->arch.psci_version;
32
33 return KVM_ARM_PSCI_LATEST;
34 }
35
36 return KVM_ARM_PSCI_0_1;
37}
38
39
40int kvm_psci_call(struct kvm_vcpu *vcpu);
41
42struct kvm_one_reg;
43
44int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu);
45int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
46int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
47int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
48
49#endif /* __KVM_ARM_PSCI_H__ */