1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* 2 /*
3 * Copyright (C) 2012,2013 - ARM Ltd 3 * Copyright (C) 2012,2013 - ARM Ltd
4 * Author: Marc Zyngier <marc.zyngier@arm.com> 4 * Author: Marc Zyngier <marc.zyngier@arm.com>
5 */ 5 */
6 6
7 #ifndef __KVM_ARM_PSCI_H__ 7 #ifndef __KVM_ARM_PSCI_H__
8 #define __KVM_ARM_PSCI_H__ 8 #define __KVM_ARM_PSCI_H__
9 9
10 #include <linux/kvm_host.h> 10 #include <linux/kvm_host.h>
11 #include <uapi/linux/psci.h> 11 #include <uapi/linux/psci.h>
12 12
13 #define KVM_ARM_PSCI_0_1 PSCI_VERSION(0 13 #define KVM_ARM_PSCI_0_1 PSCI_VERSION(0, 1)
14 #define KVM_ARM_PSCI_0_2 PSCI_VERSION(0 14 #define KVM_ARM_PSCI_0_2 PSCI_VERSION(0, 2)
15 #define KVM_ARM_PSCI_1_0 PSCI_VERSION(1 15 #define KVM_ARM_PSCI_1_0 PSCI_VERSION(1, 0)
16 #define KVM_ARM_PSCI_1_1 PSCI_VERSION(1 <<
17 16
18 #define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1 !! 17 #define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_0
19 18
20 static inline int kvm_psci_version(struct kvm_ !! 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)
21 { 24 {
22 /* 25 /*
23 * Our PSCI implementation stays the s 26 * Our PSCI implementation stays the same across versions from
24 * v0.2 onward, only adding the few ma 27 * v0.2 onward, only adding the few mandatory functions (such
25 * as FEATURES with 1.0) that are requ 28 * as FEATURES with 1.0) that are required by newer
26 * revisions. It is thus safe to retur 29 * revisions. It is thus safe to return the latest, unless
27 * userspace has instructed us otherwi 30 * userspace has instructed us otherwise.
28 */ 31 */
29 if (vcpu_has_feature(vcpu, KVM_ARM_VCP !! 32 if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features)) {
30 if (vcpu->kvm->arch.psci_versi 33 if (vcpu->kvm->arch.psci_version)
31 return vcpu->kvm->arch 34 return vcpu->kvm->arch.psci_version;
32 35
33 return KVM_ARM_PSCI_LATEST; 36 return KVM_ARM_PSCI_LATEST;
34 } 37 }
35 38
36 return KVM_ARM_PSCI_0_1; 39 return KVM_ARM_PSCI_0_1;
37 } 40 }
38 41
39 42
40 int kvm_psci_call(struct kvm_vcpu *vcpu); 43 int kvm_psci_call(struct kvm_vcpu *vcpu);
>> 44
>> 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);
41 51
42 #endif /* __KVM_ARM_PSCI_H__ */ 52 #endif /* __KVM_ARM_PSCI_H__ */
43 53
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