From 4511ec153afd132da9f4308e7db394820eb52129 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Fri, 27 Mar 2009 14:25:37 +0100 Subject: microblaze_v8: system.h processor.h Reviewed-by: Ingo Molnar Acked-by: John Linn Acked-by: Stephen Neuendorffer Acked-by: John Williams Signed-off-by: Michal Simek --- arch/microblaze/include/asm/system.h | 91 ++++++++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 arch/microblaze/include/asm/system.h (limited to 'arch/microblaze/include/asm/system.h') diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h new file mode 100644 index 000000000000..c4e308850b5d --- /dev/null +++ b/arch/microblaze/include/asm/system.h @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef _ASM_MICROBLAZE_SYSTEM_H +#define _ASM_MICROBLAZE_SYSTEM_H + +#include +#include +#include + +struct task_struct; +struct thread_info; + +extern struct task_struct *_switch_to(struct thread_info *prev, + struct thread_info *next); + +#define switch_to(prev, next, last) \ + do { \ + (last) = _switch_to(task_thread_info(prev), \ + task_thread_info(next)); \ + } while (0) + +#define smp_read_barrier_depends() do {} while (0) +#define read_barrier_depends() do {} while (0) + +#define nop() asm volatile ("nop") +#define mb() barrier() +#define rmb() mb() +#define wmb() mb() +#define set_mb(var, value) do { var = value; mb(); } while (0) +#define set_wmb(var, value) do { var = value; wmb(); } while (0) + +#define smp_mb() mb() +#define smp_rmb() rmb() +#define smp_wmb() wmb() + +void show_trace(struct task_struct *task, unsigned long *stack); +void __bad_xchg(volatile void *ptr, int size); + +static inline unsigned long __xchg(unsigned long x, volatile void *ptr, + int size) +{ + unsigned long ret; + unsigned long flags; + + switch (size) { + case 1: + local_irq_save(flags); + ret = *(volatile unsigned char *)ptr; + *(volatile unsigned char *)ptr = x; + local_irq_restore(flags); + break; + + case 4: + local_irq_save(flags); + ret = *(volatile unsigned long *)ptr; + *(volatile unsigned long *)ptr = x; + local_irq_restore(flags); + break; + default: + __bad_xchg(ptr, size), ret = 0; + break; + } + + return ret; +} + +void disable_hlt(void); +void enable_hlt(void); +void default_idle(void); + +#define xchg(ptr, x) \ + ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) + +void free_init_pages(char *what, unsigned long begin, unsigned long end); +void free_initmem(void); +extern char *klimit; +extern void ret_from_fork(void); + +#ifdef CONFIG_DEBUG_FS +extern struct dentry *of_debugfs_root; +#endif + +#define arch_align_stack(x) (x) + +#endif /* _ASM_MICROBLAZE_SYSTEM_H */ -- cgit v1.2.3