Commit | Line | Data |
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ae3a197e DH |
1 | /* |
2 | * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> | |
3 | */ | |
4 | #ifndef _ASM_POWERPC_SWITCH_TO_H | |
5 | #define _ASM_POWERPC_SWITCH_TO_H | |
6 | ||
3eb5d588 AB |
7 | #include <asm/reg.h> |
8 | ||
ae3a197e DH |
9 | struct thread_struct; |
10 | struct task_struct; | |
11 | struct pt_regs; | |
12 | ||
13 | extern struct task_struct *__switch_to(struct task_struct *, | |
14 | struct task_struct *); | |
15 | #define switch_to(prev, next, last) ((last) = __switch_to((prev), (next))) | |
16 | ||
ae3a197e DH |
17 | extern struct task_struct *_switch(struct thread_struct *prev, |
18 | struct thread_struct *next); | |
19 | ||
d1e1cf2e AB |
20 | extern void switch_booke_debug_regs(struct debug_reg *new_debug); |
21 | ||
ae3a197e | 22 | extern int emulate_altivec(struct pt_regs *); |
d1e1cf2e | 23 | |
579e633e | 24 | extern void flush_all_to_thread(struct task_struct *); |
d1e1cf2e | 25 | extern void giveup_all(struct task_struct *); |
ae3a197e | 26 | |
037f0eed | 27 | #ifdef CONFIG_PPC_FPU |
d1e1cf2e | 28 | extern void enable_kernel_fp(void); |
037f0eed | 29 | extern void flush_fp_to_thread(struct task_struct *); |
5f20be44 | 30 | extern void giveup_fpu(struct task_struct *); |
8792468d | 31 | extern void save_fpu(struct task_struct *); |
3eb5d588 AB |
32 | static inline void disable_kernel_fp(void) |
33 | { | |
34 | msr_check_and_clear(MSR_FP); | |
35 | } | |
037f0eed | 36 | #else |
de2a20aa | 37 | static inline void __giveup_fpu(struct task_struct *t) { } |
8792468d | 38 | static inline void save_fpu(struct task_struct *t) { } |
037f0eed KH |
39 | static inline void flush_fp_to_thread(struct task_struct *t) { } |
40 | #endif | |
41 | ||
ae3a197e | 42 | #ifdef CONFIG_ALTIVEC |
d1e1cf2e | 43 | extern void enable_kernel_altivec(void); |
ae3a197e | 44 | extern void flush_altivec_to_thread(struct task_struct *); |
8cd3c23d | 45 | extern void giveup_altivec(struct task_struct *); |
98da581e | 46 | extern void __giveup_altivec(struct task_struct *); |
3eb5d588 AB |
47 | static inline void disable_kernel_altivec(void) |
48 | { | |
49 | msr_check_and_clear(MSR_VEC); | |
50 | } | |
de2a20aa CB |
51 | #else |
52 | static inline void __giveup_altivec(struct task_struct *t) { } | |
ae3a197e DH |
53 | #endif |
54 | ||
55 | #ifdef CONFIG_VSX | |
d1e1cf2e | 56 | extern void enable_kernel_vsx(void); |
ae3a197e | 57 | extern void flush_vsx_to_thread(struct task_struct *); |
d1e1cf2e AB |
58 | extern void giveup_vsx(struct task_struct *); |
59 | extern void __giveup_vsx(struct task_struct *); | |
3eb5d588 AB |
60 | static inline void disable_kernel_vsx(void) |
61 | { | |
62 | msr_check_and_clear(MSR_FP|MSR_VEC|MSR_VSX); | |
63 | } | |
de2a20aa CB |
64 | #else |
65 | static inline void __giveup_vsx(struct task_struct *t) { } | |
ae3a197e DH |
66 | #endif |
67 | ||
68 | #ifdef CONFIG_SPE | |
d1e1cf2e | 69 | extern void enable_kernel_spe(void); |
ae3a197e | 70 | extern void flush_spe_to_thread(struct task_struct *); |
98da581e AB |
71 | extern void giveup_spe(struct task_struct *); |
72 | extern void __giveup_spe(struct task_struct *); | |
3eb5d588 AB |
73 | static inline void disable_kernel_spe(void) |
74 | { | |
75 | msr_check_and_clear(MSR_SPE); | |
76 | } | |
de2a20aa CB |
77 | #else |
78 | static inline void __giveup_spe(struct task_struct *t) { } | |
ae3a197e DH |
79 | #endif |
80 | ||
330a1eb7 ME |
81 | static inline void clear_task_ebb(struct task_struct *t) |
82 | { | |
83 | #ifdef CONFIG_PPC_BOOK3S_64 | |
84 | /* EBB perf events are not inherited, so clear all EBB state. */ | |
3df48c98 ME |
85 | t->thread.ebbrr = 0; |
86 | t->thread.ebbhr = 0; | |
330a1eb7 ME |
87 | t->thread.bescr = 0; |
88 | t->thread.mmcr2 = 0; | |
89 | t->thread.mmcr0 = 0; | |
90 | t->thread.siar = 0; | |
91 | t->thread.sdar = 0; | |
92 | t->thread.sier = 0; | |
93 | t->thread.used_ebb = 0; | |
94 | #endif | |
95 | } | |
96 | ||
ae3a197e | 97 | #endif /* _ASM_POWERPC_SWITCH_TO_H */ |