99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*
|
||
|
|
* Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
|
||
|
|
*/
|
||
|
|
#ifndef _ASM_POWERPC_SWITCH_TO_H
|
||
|
|
#define _ASM_POWERPC_SWITCH_TO_H
|
||
|
|
|
||
|
|
#include <asm/reg.h>
|
||
|
|
|
||
|
|
struct thread_struct;
|
||
|
|
struct task_struct;
|
||
|
|
struct pt_regs;
|
||
|
|
|
||
|
|
extern struct task_struct *__switch_to(struct task_struct *,
|
||
|
|
struct task_struct *);
|
||
|
|
#define switch_to(prev, next, last) ((last) = __switch_to((prev), (next)))
|
||
|
|
|
||
|
|
extern struct task_struct *_switch(struct thread_struct *prev,
|
||
|
|
struct thread_struct *next);
|
||
|
|
|
||
|
|
extern void switch_booke_debug_regs(struct debug_reg *new_debug);
|
||
|
|
|
||
|
|
extern int emulate_altivec(struct pt_regs *);
|
||
|
|
|
||
|
|
extern void flush_all_to_thread(struct task_struct *);
|
||
|
|
extern void giveup_all(struct task_struct *);
|
||
|
|
|
||
|
|
#ifdef CONFIG_PPC_FPU
|
||
|
|
extern void enable_kernel_fp(void);
|
||
|
|
extern void flush_fp_to_thread(struct task_struct *);
|
||
|
|
extern void giveup_fpu(struct task_struct *);
|
||
|
|
extern void save_fpu(struct task_struct *);
|
||
|
|
static inline void disable_kernel_fp(void)
|
||
|
|
{
|
||
|
|
msr_check_and_clear(MSR_FP);
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
static inline void save_fpu(struct task_struct *t) { }
|
||
|
|
static inline void flush_fp_to_thread(struct task_struct *t) { }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_ALTIVEC
|
||
|
|
extern void enable_kernel_altivec(void);
|
||
|
|
extern void flush_altivec_to_thread(struct task_struct *);
|
||
|
|
extern void giveup_altivec(struct task_struct *);
|
||
|
|
extern void save_altivec(struct task_struct *);
|
||
|
|
static inline void disable_kernel_altivec(void)
|
||
|
|
{
|
||
|
|
msr_check_and_clear(MSR_VEC);
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
static inline void save_altivec(struct task_struct *t) { }
|
||
|
|
static inline void __giveup_altivec(struct task_struct *t) { }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_VSX
|
||
|
|
extern void enable_kernel_vsx(void);
|
||
|
|
extern void flush_vsx_to_thread(struct task_struct *);
|
||
|
|
static inline void disable_kernel_vsx(void)
|
||
|
|
{
|
||
|
|
msr_check_and_clear(MSR_FP|MSR_VEC|MSR_VSX);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_SPE
|
||
|
|
extern void enable_kernel_spe(void);
|
||
|
|
extern void flush_spe_to_thread(struct task_struct *);
|
||
|
|
extern void giveup_spe(struct task_struct *);
|
||
|
|
extern void __giveup_spe(struct task_struct *);
|
||
|
|
static inline void disable_kernel_spe(void)
|
||
|
|
{
|
||
|
|
msr_check_and_clear(MSR_SPE);
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
static inline void __giveup_spe(struct task_struct *t) { }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static inline void clear_task_ebb(struct task_struct *t)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
||
|
|
/* EBB perf events are not inherited, so clear all EBB state. */
|
||
|
|
t->thread.ebbrr = 0;
|
||
|
|
t->thread.ebbhr = 0;
|
||
|
|
t->thread.bescr = 0;
|
||
|
|
t->thread.mmcr2 = 0;
|
||
|
|
t->thread.mmcr0 = 0;
|
||
|
|
t->thread.siar = 0;
|
||
|
|
t->thread.sdar = 0;
|
||
|
|
t->thread.sier = 0;
|
||
|
|
t->thread.used_ebb = 0;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
extern int set_thread_uses_vas(void);
|
||
|
|
|
||
|
|
extern int set_thread_tidr(struct task_struct *t);
|
||
|
|
|
||
|
|
#endif /* _ASM_POWERPC_SWITCH_TO_H */
|