projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| caab277b | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| dcd2e40c MZ |
2 | /* |
| 3 | * Copyright (C) 2012,2013 - ARM Ltd | |
| 4 | * Author: Marc Zyngier <marc.zyngier@arm.com> | |
| dcd2e40c MZ |
5 | */ |
| 6 | ||
| 1a2fb94e MZ |
7 | #ifndef __KVM_ARM_PSCI_H__ |
| 8 | #define __KVM_ARM_PSCI_H__ | |
| dcd2e40c | 9 | |
| a4097b35 | 10 | #include <linux/kvm_host.h> |
| d0a144f1 MZ |
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) | |
| 58e0b223 MZ |
15 | #define KVM_ARM_PSCI_1_0 PSCI_VERSION(1, 0) |
| 16 | ||
| 17 | #define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_0 | |
| 7d0f84aa | 18 | |
| a4097b35 MZ |
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 | */ | |
| 23 | static 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 | |
| 85bd0ba1 MZ |
29 | * revisions. It is thus safe to return the latest, unless |
| 30 | * userspace has instructed us otherwise. | |
| a4097b35 | 31 | */ |
| 85bd0ba1 MZ |
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 | ||
| a4097b35 | 36 | return KVM_ARM_PSCI_LATEST; |
| 85bd0ba1 | 37 | } |
| a4097b35 MZ |
38 | |
| 39 | return KVM_ARM_PSCI_0_1; | |
| 40 | } | |
| 41 | ||
| 42 | ||
| 55009c6e | 43 | int kvm_psci_call(struct kvm_vcpu *vcpu); |
| dcd2e40c | 44 | |
| 85bd0ba1 MZ |
45 | struct kvm_one_reg; |
| 46 | ||
| 47 | int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu); | |
| 48 | int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices); | |
| 49 | int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); | |
| 50 | int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); | |
| 51 | ||
| 1a2fb94e | 52 | #endif /* __KVM_ARM_PSCI_H__ */ |