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