/* tlbflush.h: TLB flushing functions
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells ([email protected])
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/

#ifndef _ASM_TLBFLUSH_H
#define _ASM_TLBFLUSH_H

#include <linux/mm.h>
#include <asm/processor.h>

#ifdef CONFIG_MMU

#ifndef __ASSEMBLY__
extern void asmlinkage __flush_tlb_all(void);
extern void asmlinkage __flush_tlb_mm(unsigned long contextid);
extern void asmlinkage __flush_tlb_page(unsigned long contextid, unsigned long start);
extern void asmlinkage __flush_tlb_range(unsigned long contextid,
unsigned long start, unsigned long end);
#endif /* !__ASSEMBLY__ */

#define flush_tlb_all() \
do { \
preempt_disable(); \
__flush_tlb_all(); \
preempt_enable(); \
} while(0)

#define flush_tlb_mm(mm) \
do { \
preempt_disable(); \
__flush_tlb_mm((mm)->context.id); \
preempt_enable(); \
} while(0)

#define flush_tlb_range(vma,start,end) \
do { \
preempt_disable(); \
__flush_tlb_range((vma)->vm_mm->context.id, start, end); \
preempt_enable(); \
} while(0)

#define flush_tlb_page(vma,addr) \
do { \
preempt_disable(); \
__flush_tlb_page((vma)->vm_mm->context.id, addr); \
preempt_enable(); \
} while(0)


#define __flush_tlb_global() flush_tlb_all()
#define flush_tlb() flush_tlb_all()
#define flush_tlb_kernel_range(start, end) flush_tlb_all()

#else

#define flush_tlb() BUG()
#define flush_tlb_all() BUG()
#define flush_tlb_mm(mm) BUG()
#define flush_tlb_page(vma,addr) BUG()
#define flush_tlb_range(mm,start,end) BUG()
#define flush_tlb_kernel_range(start, end) BUG()

#endif


#endif /* _ASM_TLBFLUSH_H */