1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *
4  * Copyright SUSE Linux Products GmbH 2010
5  *
6  * Authors: Alexander Graf <agraf@suse.de>
7  */
8 
9 #ifndef __ASM_KVM_BOOKE_H__
10 #define __ASM_KVM_BOOKE_H__
11 
12 #include <linux/types.h>
13 #include <linux/kvm_host.h>
14 
15 /*
16  * Number of available lpids. Only the low-order 6 bits of LPID rgister are
17  * implemented on e500mc+ cores.
18  */
19 #define KVMPPC_NR_LPIDS                        64
20 
21 #define KVMPPC_INST_EHPRIV		0x7c00021c
22 #define EHPRIV_OC_SHIFT			11
23 /* "ehpriv 1" : ehpriv with OC = 1 is used for debug emulation */
24 #define EHPRIV_OC_DEBUG			1
25 
26 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
27 {
28 	vcpu->arch.regs.gpr[num] = val;
29 }
30 
31 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
32 {
33 	return vcpu->arch.regs.gpr[num];
34 }
35 
36 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
37 {
38 	vcpu->arch.regs.ccr = val;
39 }
40 
41 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
42 {
43 	return vcpu->arch.regs.ccr;
44 }
45 
46 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
47 {
48 	vcpu->arch.regs.xer = val;
49 }
50 
51 static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
52 {
53 	return vcpu->arch.regs.xer;
54 }
55 
56 static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
57 {
58 	/* XXX Would need to check TLB entry */
59 	return false;
60 }
61 
62 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
63 {
64 	vcpu->arch.regs.ctr = val;
65 }
66 
67 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
68 {
69 	return vcpu->arch.regs.ctr;
70 }
71 
72 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
73 {
74 	vcpu->arch.regs.link = val;
75 }
76 
77 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
78 {
79 	return vcpu->arch.regs.link;
80 }
81 
82 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
83 {
84 	vcpu->arch.regs.nip = val;
85 }
86 
87 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
88 {
89 	return vcpu->arch.regs.nip;
90 }
91 
92 #ifdef CONFIG_BOOKE
93 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
94 {
95 	return vcpu->arch.fault_dear;
96 }
97 #endif
98 
99 static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
100 {
101 	/* Magic page is only supported on e500v2 */
102 #ifdef CONFIG_KVM_E500V2
103 	return true;
104 #else
105 	return false;
106 #endif
107 }
108 #endif /* __ASM_KVM_BOOKE_H__ */
109