projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 7 | struct thread_struct; | |
| 8 | struct task_struct; | |
| 9 | struct pt_regs; | |
| 10 | ||
| 11 | extern struct task_struct *__switch_to(struct task_struct *, | |
| 12 | struct task_struct *); | |
| 13 | #define switch_to(prev, next, last) ((last) = __switch_to((prev), (next))) | |
| 14 | ||
| 15 | struct thread_struct; | |
| 16 | extern struct task_struct *_switch(struct thread_struct *prev, | |
| 17 | struct thread_struct *next); | |
| c2d52644 | 18 | #ifdef CONFIG_PPC_BOOK3S_64 |
| 96d01610 | 19 | static inline void save_early_sprs(struct thread_struct *prev) |
| c2d52644 MN |
20 | { |
| 21 | if (cpu_has_feature(CPU_FTR_ARCH_207S)) | |
| 22 | prev->tar = mfspr(SPRN_TAR); | |
| 96d01610 S |
23 | if (cpu_has_feature(CPU_FTR_DSCR)) |
| 24 | prev->dscr = mfspr(SPRN_DSCR); | |
| c2d52644 MN |
25 | } |
| 26 | #else | |
| 96d01610 | 27 | static inline void save_early_sprs(struct thread_struct *prev) {} |
| c2d52644 | 28 | #endif |
| ae3a197e | 29 | |
| ae3a197e | 30 | extern void enable_kernel_fp(void); |
| ae3a197e | 31 | extern void enable_kernel_altivec(void); |
| 72cd7b44 | 32 | extern void enable_kernel_vsx(void); |
| ae3a197e DH |
33 | extern int emulate_altivec(struct pt_regs *); |
| 34 | extern void __giveup_vsx(struct task_struct *); | |
| 35 | extern void giveup_vsx(struct task_struct *); | |
| 36 | extern void enable_kernel_spe(void); | |
| 37 | extern void giveup_spe(struct task_struct *); | |
| 38 | extern void load_up_spe(struct task_struct *); | |
| f5f97210 | 39 | extern void switch_booke_debug_regs(struct debug_reg *new_debug); |
| ae3a197e DH |
40 | |
| 41 | #ifndef CONFIG_SMP | |
| 42 | extern void discard_lazy_cpu_state(void); | |
| 43 | #else | |
| 44 | static inline void discard_lazy_cpu_state(void) | |
| 45 | { | |
| 46 | } | |
| 47 | #endif | |
| 48 | ||
| 037f0eed KH |
49 | #ifdef CONFIG_PPC_FPU |
| 50 | extern void flush_fp_to_thread(struct task_struct *); | |
| 5f20be44 | 51 | extern void giveup_fpu(struct task_struct *); |
| 037f0eed KH |
52 | #else |
| 53 | static inline void flush_fp_to_thread(struct task_struct *t) { } | |
| 5f20be44 | 54 | static inline void giveup_fpu(struct task_struct *t) { } |
| 037f0eed KH |
55 | #endif |
| 56 | ||
| ae3a197e DH |
57 | #ifdef CONFIG_ALTIVEC |
| 58 | extern void flush_altivec_to_thread(struct task_struct *); | |
| 8cd3c23d | 59 | extern void giveup_altivec(struct task_struct *); |
| 35000870 | 60 | extern void giveup_altivec_notask(void); |
| ae3a197e DH |
61 | #else |
| 62 | static inline void flush_altivec_to_thread(struct task_struct *t) | |
| 63 | { | |
| 64 | } | |
| 8cd3c23d AB |
65 | static inline void giveup_altivec(struct task_struct *t) |
| 66 | { | |
| 67 | } | |
| ae3a197e DH |
68 | #endif |
| 69 | ||
| 70 | #ifdef CONFIG_VSX | |
| 71 | extern void flush_vsx_to_thread(struct task_struct *); | |
| 72 | #else | |
| 73 | static inline void flush_vsx_to_thread(struct task_struct *t) | |
| 74 | { | |
| 75 | } | |
| 76 | #endif | |
| 77 | ||
| 78 | #ifdef CONFIG_SPE | |
| 79 | extern void flush_spe_to_thread(struct task_struct *); | |
| 80 | #else | |
| 81 | static inline void flush_spe_to_thread(struct task_struct *t) | |
| 82 | { | |
| 83 | } | |
| 84 | #endif | |
| 85 | ||
| 330a1eb7 ME |
86 | static inline void clear_task_ebb(struct task_struct *t) |
| 87 | { | |
| 88 | #ifdef CONFIG_PPC_BOOK3S_64 | |
| 89 | /* EBB perf events are not inherited, so clear all EBB state. */ | |
| 3df48c98 ME |
90 | t->thread.ebbrr = 0; |
| 91 | t->thread.ebbhr = 0; | |
| 330a1eb7 ME |
92 | t->thread.bescr = 0; |
| 93 | t->thread.mmcr2 = 0; | |
| 94 | t->thread.mmcr0 = 0; | |
| 95 | t->thread.siar = 0; | |
| 96 | t->thread.sdar = 0; | |
| 97 | t->thread.sier = 0; | |
| 98 | t->thread.used_ebb = 0; | |
| 99 | #endif | |
| 100 | } | |
| 101 | ||
| ae3a197e | 102 | #endif /* _ASM_POWERPC_SWITCH_TO_H */ |