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cacheflush.h

#ifndef _M68KNOMMU_CACHEFLUSH_H
#define _M68KNOMMU_CACHEFLUSH_H

/*
 * (C) Copyright 2000-2004, Greg Ungerer <gerg@snapgear.com>
 */
#include <linux/mm.h>

#define flush_cache_all()                 __flush_cache_all()
#define flush_cache_mm(mm)                do { } while (0)
#define flush_cache_dup_mm(mm)                  do { } while (0)
#define flush_cache_range(vma, start, end)      __flush_cache_all()
#define flush_cache_page(vma, vmaddr)           do { } while (0)
#define flush_dcache_range(start,len)           __flush_cache_all()
#define flush_dcache_page(page)                 do { } while (0)
#define flush_dcache_mmap_lock(mapping)         do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
#define flush_icache_range(start,len)           __flush_cache_all()
#define flush_icache_page(vma,pg)         do { } while (0)
#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
#define flush_cache_vmap(start, end)            do { } while (0)
#define flush_cache_vunmap(start, end)          do { } while (0)

#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
      memcpy(dst, src, len)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
      memcpy(dst, src, len)

static inline void __flush_cache_all(void)
{
#ifdef CONFIG_M5407
      /*
       *    Use cpushl to push and invalidate all cache lines.
       *    Gas doesn't seem to know how to generate the ColdFire
       *    cpushl instruction... Oh well, bit stuff it for now.
       */
      __asm__ __volatile__ (
            "nop\n\t"
            "clrl %%d0\n\t"
            "1:\n\t"
            "movel      %%d0,%%a0\n\t"
            "2:\n\t"
            ".word      0xf468\n\t"
            "addl #0x10,%%a0\n\t"
            "cmpl #0x00000800,%%a0\n\t"
            "blt  2b\n\t"
            "addql      #1,%%d0\n\t"
            "cmpil      #4,%%d0\n\t"
            "bne  1b\n\t"
            "movel      #0xb6088500,%%d0\n\t"
            "movec      %%d0,%%CACR\n\t"
            : : : "d0", "a0" );
#endif /* CONFIG_M5407 */
#if defined(CONFIG_M527x) || defined(CONFIG_M528x)
      __asm__ __volatile__ (
            "movel      #0x81000200, %%d0\n\t"
            "movec      %%d0, %%CACR\n\t"
            "nop\n\t"
            : : : "d0" );
#endif /* CONFIG_M527x || CONFIG_M528x */
#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
      __asm__ __volatile__ (
            "movel      #0x81000100, %%d0\n\t"
            "movec      %%d0, %%CACR\n\t"
            "nop\n\t"
            : : : "d0" );
#endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
#ifdef CONFIG_M5249
      __asm__ __volatile__ (
            "movel      #0xa1000200, %%d0\n\t"
            "movec      %%d0, %%CACR\n\t"
            "nop\n\t"
            : : : "d0" );
#endif /* CONFIG_M5249 */
#ifdef CONFIG_M532x
      __asm__ __volatile__ (
            "movel      #0x81000200, %%d0\n\t"
            "movec      %%d0, %%CACR\n\t"
            "nop\n\t"
            : : : "d0" );
#endif /* CONFIG_M532x */
}

#endif /* _M68KNOMMU_CACHEFLUSH_H */

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