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cache-sh2.c

/*
 * arch/sh/mm/cache-sh2.c
 *
 * Copyright (C) 2002 Paul Mundt
 *
 * Released under the terms of the GNU GPL v2.0.
 */

#include <linux/init.h>
#include <linux/mm.h>

#include <asm/cache.h>
#include <asm/addrspace.h>
#include <asm/processor.h>
#include <asm/cacheflush.h>
#include <asm/io.h>

void __flush_wback_region(void *start, int size)
{
      unsigned long v;
      unsigned long begin, end;

      begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
      end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
            & ~(L1_CACHE_BYTES-1);
      for (v = begin; v < end; v+=L1_CACHE_BYTES) {
            /* FIXME cache purge */
            ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
      }
}

void __flush_purge_region(void *start, int size)
{
      unsigned long v;
      unsigned long begin, end;

      begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
      end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
            & ~(L1_CACHE_BYTES-1);
      for (v = begin; v < end; v+=L1_CACHE_BYTES) {
            ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
      }
}

void __flush_invalidate_region(void *start, int size)
{
      unsigned long v;
      unsigned long begin, end;

      begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
      end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
            & ~(L1_CACHE_BYTES-1);
      for (v = begin; v < end; v+=L1_CACHE_BYTES) {
            ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
      }
}


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