1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef _ASM_POWERPC_ASM_PROTOTYPES_H
3 #define _ASM_POWERPC_ASM_PROTOTYPES_H
4 /*
5 * This file is for prototypes of C functions that are only called
6 * from asm, and any associated variables.
7 *
8 * Copyright 2016, Daniel Axtens, IBM Corporation.
9 */
10
11 #include <linux/threads.h>
12 #include <asm/cacheflush.h>
13 #include <asm/checksum.h>
14 #include <linux/uaccess.h>
15 #include <asm/epapr_hcalls.h>
16 #include <asm/dcr.h>
17 #include <asm/mmu_context.h>
18 #include <asm/ultravisor-api.h>
19
20 #include <uapi/asm/ucontext.h>
21
22 /* Ultravisor */
23 #if defined(CONFIG_PPC_POWERNV) || defined(CONFIG_PPC_SVM)
24 long ucall_norets(unsigned long opcode, ...);
25 #else
ucall_norets(unsigned long opcode,...)26 static inline long ucall_norets(unsigned long opcode, ...)
27 {
28 return U_NOT_AVAILABLE;
29 }
30 #endif
31
32 /* OPAL */
33 int64_t __opal_call(int64_t a0, int64_t a1, int64_t a2, int64_t a3,
34 int64_t a4, int64_t a5, int64_t a6, int64_t a7,
35 int64_t opcode, uint64_t msr);
36
37 /* prom_init (OpenFirmware) */
38 unsigned long __init prom_init(unsigned long r3, unsigned long r4,
39 unsigned long pp,
40 unsigned long r6, unsigned long r7,
41 unsigned long kbase);
42
43 /* misc runtime */
44 extern u64 __bswapdi2(u64);
45 extern s64 __lshrdi3(s64, int);
46 extern s64 __ashldi3(s64, int);
47 extern s64 __ashrdi3(s64, int);
48 extern int __cmpdi2(s64, s64);
49 extern int __ucmpdi2(u64, u64);
50
51 /* tracing */
52 void _mcount(void);
53
54 /* Transaction memory related */
55 void tm_enable(void);
56 void tm_disable(void);
57 void tm_abort(uint8_t cause);
58
59 struct kvm_vcpu;
60 void _kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr);
61 void _kvmppc_save_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr);
62
63 /* Patch sites */
64 extern s32 patch__call_flush_branch_caches1;
65 extern s32 patch__call_flush_branch_caches2;
66 extern s32 patch__call_flush_branch_caches3;
67 extern s32 patch__flush_count_cache_return;
68 extern s32 patch__flush_link_stack_return;
69 extern s32 patch__call_kvm_flush_link_stack;
70 extern s32 patch__call_kvm_flush_link_stack_p9;
71 extern s32 patch__memset_nocache, patch__memcpy_nocache;
72
73 extern long flush_branch_caches;
74 extern long kvm_flush_link_stack;
75
76 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
77 void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv);
78 void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv);
79 #else
kvmppc_save_tm_hv(struct kvm_vcpu * vcpu,u64 msr,bool preserve_nv)80 static inline void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr,
81 bool preserve_nv) { }
kvmppc_restore_tm_hv(struct kvm_vcpu * vcpu,u64 msr,bool preserve_nv)82 static inline void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr,
83 bool preserve_nv) { }
84 #endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
85
86 void kvmppc_p9_enter_guest(struct kvm_vcpu *vcpu);
87
88 long kvmppc_h_set_dabr(struct kvm_vcpu *vcpu, unsigned long dabr);
89 long kvmppc_h_set_xdabr(struct kvm_vcpu *vcpu, unsigned long dabr,
90 unsigned long dabrx);
91
92 #endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */
93