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/* MN10300 TLB flushing functions
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_TLBFLUSH_H
#define _ASM_TLBFLUSH_H
#include <asm/processor.h>
#define __flush_tlb() \
do { \
int w; \
__asm__ __volatile__ \
(" mov %1,%0 \n" \
" or %2,%0 \n" \
" mov %0,%1 \n" \
: "=d"(w) \
: "m"(MMUCTR), "i"(MMUCTR_IIV|MMUCTR_DIV) \
: "memory" \
); \
} while (0)
#define __flush_tlb_all() __flush_tlb()
#define __flush_tlb_one(addr) __flush_tlb()
/*
* TLB flushing:
*
* - flush_tlb() flushes the current mm struct TLBs
* - flush_tlb_all() flushes all processes TLBs
* - flush_tlb_mm(mm) flushes the specified mm context TLB's
* - flush_tlb_page(vma, vmaddr) flushes one page
* - flush_tlb_range(mm, start, end) flushes a range of pages
* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
*/
#define flush_tlb_all() \
do { \
preempt_disable(); \
__flush_tlb_all(); \
preempt_enable(); \
} while (0)
#define flush_tlb_mm(mm) \
do { \
preempt_disable(); \
__flush_tlb_all(); \
preempt_enable(); \
} while (0)
#define flush_tlb_range(vma, start, end) \
do { \
unsigned long __s __attribute__((unused)) = (start); \
unsigned long __e __attribute__((unused)) = (end); \
preempt_disable(); \
__flush_tlb_all(); \
preempt_enable(); \
} while (0)
#define __flush_tlb_global() flush_tlb_all()
#define flush_tlb() flush_tlb_all()
#define flush_tlb_kernel_range(start, end) \
do { \
unsigned long __s __attribute__((unused)) = (start); \
unsigned long __e __attribute__((unused)) = (end); \
flush_tlb_all(); \
} while (0)
extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
#define flush_tlb_pgtables(mm, start, end) do {} while (0)
#endif /* _ASM_TLBFLUSH_H */
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