projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| dcd2e40c MZ |
1 | /* |
| 2 | * Copyright (C) 2012,2013 - ARM Ltd | |
| 3 | * Author: Marc Zyngier <marc.zyngier@arm.com> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License version 2 as | |
| 7 | * published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU General Public License | |
| 15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 16 | */ | |
| 17 | ||
| 221905ab MZ |
18 | #ifndef __KVM_ARM_PSCI_H__ |
| 19 | #define __KVM_ARM_PSCI_H__ | |
| dcd2e40c | 20 | |
| 69b98e81 | 21 | #include <linux/kvm_host.h> |
| 9788f802 MZ |
22 | #include <uapi/linux/psci.h> |
| 23 | ||
| 24 | #define KVM_ARM_PSCI_0_1 PSCI_VERSION(0, 1) | |
| 25 | #define KVM_ARM_PSCI_0_2 PSCI_VERSION(0, 2) | |
| 8d185513 MZ |
26 | #define KVM_ARM_PSCI_1_0 PSCI_VERSION(1, 0) |
| 27 | ||
| 28 | #define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_0 | |
| 7d0f84aa | 29 | |
| 69b98e81 MZ |
30 | /* |
| 31 | * We need the KVM pointer independently from the vcpu as we can call | |
| 32 | * this from HYP, and need to apply kern_hyp_va on it... | |
| 33 | */ | |
| 34 | static inline int kvm_psci_version(struct kvm_vcpu *vcpu, struct kvm *kvm) | |
| 35 | { | |
| 36 | /* | |
| 37 | * Our PSCI implementation stays the same across versions from | |
| 38 | * v0.2 onward, only adding the few mandatory functions (such | |
| 39 | * as FEATURES with 1.0) that are required by newer | |
| 9c98a823 MZ |
40 | * revisions. It is thus safe to return the latest, unless |
| 41 | * userspace has instructed us otherwise. | |
| 69b98e81 | 42 | */ |
| 9c98a823 MZ |
43 | if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features)) { |
| 44 | if (vcpu->kvm->arch.psci_version) | |
| 45 | return vcpu->kvm->arch.psci_version; | |
| 46 | ||
| 69b98e81 | 47 | return KVM_ARM_PSCI_LATEST; |
| 9c98a823 | 48 | } |
| 69b98e81 MZ |
49 | |
| 50 | return KVM_ARM_PSCI_0_1; | |
| 51 | } | |
| 52 | ||
| 53 | ||
| 7b5b30e9 | 54 | int kvm_hvc_call_handler(struct kvm_vcpu *vcpu); |
| dcd2e40c | 55 | |
| 9c98a823 MZ |
56 | struct kvm_one_reg; |
| 57 | ||
| 58 | int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu); | |
| 59 | int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices); | |
| 60 | int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); | |
| 61 | int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); | |
| 62 | ||
| 221905ab | 63 | #endif /* __KVM_ARM_PSCI_H__ */ |