| David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 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); |
| Michael Neuling | 8073751 | 2013-08-09 17:29:30 +1000 | [diff] [blame] | 18 | #ifdef CONFIG_PPC_BOOK3S_64 |
| 19 | static inline void save_tar(struct thread_struct *prev) |
| 20 | { |
| 21 | if (cpu_has_feature(CPU_FTR_ARCH_207S)) |
| 22 | prev->tar = mfspr(SPRN_TAR); |
| 23 | } |
| 24 | #else |
| 25 | static inline void save_tar(struct thread_struct *prev) {} |
| 26 | #endif |
| David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 27 | |
| 28 | extern void giveup_fpu(struct task_struct *); |
| Scott Wood | 8fae845 | 2011-12-20 15:34:45 +0000 | [diff] [blame] | 29 | extern void load_up_fpu(void); |
| David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 30 | extern void disable_kernel_fp(void); |
| 31 | extern void enable_kernel_fp(void); |
| 32 | extern void flush_fp_to_thread(struct task_struct *); |
| 33 | extern void enable_kernel_altivec(void); |
| David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 34 | extern void load_up_altivec(struct task_struct *); |
| 35 | extern int emulate_altivec(struct pt_regs *); |
| 36 | extern void __giveup_vsx(struct task_struct *); |
| 37 | extern void giveup_vsx(struct task_struct *); |
| 38 | extern void enable_kernel_spe(void); |
| 39 | extern void giveup_spe(struct task_struct *); |
| 40 | extern void load_up_spe(struct task_struct *); |
| 41 | |
| 42 | #ifndef CONFIG_SMP |
| 43 | extern void discard_lazy_cpu_state(void); |
| 44 | #else |
| 45 | static inline void discard_lazy_cpu_state(void) |
| 46 | { |
| 47 | } |
| 48 | #endif |
| 49 | |
| 50 | #ifdef CONFIG_ALTIVEC |
| 51 | extern void flush_altivec_to_thread(struct task_struct *); |
| Anton Blanchard | 8cd3c23 | 2012-04-15 20:54:59 +0000 | [diff] [blame] | 52 | extern void giveup_altivec(struct task_struct *); |
| Anton Blanchard | 3500087 | 2012-04-15 20:56:45 +0000 | [diff] [blame] | 53 | extern void giveup_altivec_notask(void); |
| David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 54 | #else |
| 55 | static inline void flush_altivec_to_thread(struct task_struct *t) |
| 56 | { |
| 57 | } |
| Anton Blanchard | 8cd3c23 | 2012-04-15 20:54:59 +0000 | [diff] [blame] | 58 | static inline void giveup_altivec(struct task_struct *t) |
| 59 | { |
| 60 | } |
| David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 61 | #endif |
| 62 | |
| 63 | #ifdef CONFIG_VSX |
| 64 | extern void flush_vsx_to_thread(struct task_struct *); |
| 65 | #else |
| 66 | static inline void flush_vsx_to_thread(struct task_struct *t) |
| 67 | { |
| 68 | } |
| 69 | #endif |
| 70 | |
| 71 | #ifdef CONFIG_SPE |
| 72 | extern void flush_spe_to_thread(struct task_struct *); |
| 73 | #else |
| 74 | static inline void flush_spe_to_thread(struct task_struct *t) |
| 75 | { |
| 76 | } |
| 77 | #endif |
| 78 | |
| 79 | #endif /* _ASM_POWERPC_SWITCH_TO_H */ |