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Note: File does not exist in v3.1.
 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
17#define KVM_ARM_PSCI_LATEST	KVM_ARM_PSCI_1_0
18
19/*
20 * We need the KVM pointer independently from the vcpu as we can call
21 * this from HYP, and need to apply kern_hyp_va on it...
22 */
23static inline int kvm_psci_version(struct kvm_vcpu *vcpu, struct kvm *kvm)
24{
25	/*
26	 * Our PSCI implementation stays the same across versions from
27	 * v0.2 onward, only adding the few mandatory functions (such
28	 * as FEATURES with 1.0) that are required by newer
29	 * revisions. It is thus safe to return the latest, unless
30	 * userspace has instructed us otherwise.
31	 */
32	if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features)) {
33		if (vcpu->kvm->arch.psci_version)
34			return vcpu->kvm->arch.psci_version;
35
36		return KVM_ARM_PSCI_LATEST;
37	}
38
39	return KVM_ARM_PSCI_0_1;
40}
41
42
43int kvm_hvc_call_handler(struct kvm_vcpu *vcpu);
44
45struct kvm_one_reg;
46
47int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu);
48int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
49int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
50int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
51
52#endif /* __KVM_ARM_PSCI_H__ */