cache-smp-flush.c

Go to the documentation of this file.

/* Functions for global dcache flush when writeback caching in SMP
 *
 * Copyright (C) 2010 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 Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 */
#include <linux/mm.h>
#include <asm/cacheflush.h>
#include "cache-smp.h"

void mn10300_dcache_flush(void)
{
    unsigned long flags;

    flags = smp_lock_cache();
    mn10300_local_dcache_flush();
    smp_cache_call(SMP_DCACHE_FLUSH, 0, 0);
    smp_unlock_cache(flags);
}

void mn10300_dcache_flush_page(unsigned long start)
{
    unsigned long flags;

    start &= ~(PAGE_SIZE-1);

    flags = smp_lock_cache();
    mn10300_local_dcache_flush_page(start);
    smp_cache_call(SMP_DCACHE_FLUSH_RANGE, start, start + PAGE_SIZE);
    smp_unlock_cache(flags);
}

void mn10300_dcache_flush_range(unsigned long start, unsigned long end)
{
    unsigned long flags;

    flags = smp_lock_cache();
    mn10300_local_dcache_flush_range(start, end);
    smp_cache_call(SMP_DCACHE_FLUSH_RANGE, start, end);
    smp_unlock_cache(flags);
}

void mn10300_dcache_flush_range2(unsigned long start, unsigned long size)
{
    unsigned long flags;

    flags = smp_lock_cache();
    mn10300_local_dcache_flush_range2(start, size);
    smp_cache_call(SMP_DCACHE_FLUSH_RANGE, start, start + size);
    smp_unlock_cache(flags);
}

void mn10300_dcache_flush_inv(void)
{
    unsigned long flags;

    flags = smp_lock_cache();
    mn10300_local_dcache_flush_inv();
    smp_cache_call(SMP_DCACHE_FLUSH_INV, 0, 0);
    smp_unlock_cache(flags);
}

void mn10300_dcache_flush_inv_page(unsigned long start)
{
    unsigned long flags;

    start &= ~(PAGE_SIZE-1);

    flags = smp_lock_cache();
    mn10300_local_dcache_flush_inv_page(start);
    smp_cache_call(SMP_DCACHE_FLUSH_INV_RANGE, start, start + PAGE_SIZE);
    smp_unlock_cache(flags);
}

void mn10300_dcache_flush_inv_range(unsigned long start, unsigned long end)
{
    unsigned long flags;

    flags = smp_lock_cache();
    mn10300_local_dcache_flush_inv_range(start, end);
    smp_cache_call(SMP_DCACHE_FLUSH_INV_RANGE, start, end);
    smp_unlock_cache(flags);
}

void mn10300_dcache_flush_inv_range2(unsigned long start, unsigned long size)
{
    unsigned long flags;

    flags = smp_lock_cache();
    mn10300_local_dcache_flush_inv_range2(start, size);
    smp_cache_call(SMP_DCACHE_FLUSH_INV_RANGE, start, start + size);
    smp_unlock_cache(flags);
}