87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef _M68KNOMMU_CACHEFLUSH_H
|
||
|
|
#define _M68KNOMMU_CACHEFLUSH_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* (C) Copyright 2000-2010, Greg Ungerer <gerg@snapgear.com>
|
||
|
|
*/
|
||
|
|
#include <linux/mm.h>
|
||
|
|
#include <asm/mcfsim.h>
|
||
|
|
|
||
|
|
#define flush_cache_all() __flush_cache_all()
|
||
|
|
#define flush_dcache_range(start, len) __flush_dcache_all()
|
||
|
|
#define flush_icache_range(start, len) __flush_icache_all()
|
||
|
|
|
||
|
|
void mcf_cache_push(void);
|
||
|
|
|
||
|
|
static inline void __clear_cache_all(void)
|
||
|
|
{
|
||
|
|
#ifdef CACHE_INVALIDATE
|
||
|
|
__asm__ __volatile__ (
|
||
|
|
"movec %0, %%CACR\n\t"
|
||
|
|
"nop\n\t"
|
||
|
|
: : "r" (CACHE_INVALIDATE) );
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void __flush_cache_all(void)
|
||
|
|
{
|
||
|
|
#ifdef CACHE_PUSH
|
||
|
|
mcf_cache_push();
|
||
|
|
#endif
|
||
|
|
__clear_cache_all();
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Some ColdFire parts implement separate instruction and data caches,
|
||
|
|
* on those we should just flush the appropriate cache. If we don't need
|
||
|
|
* to do any specific flushing then this will be optimized away.
|
||
|
|
*/
|
||
|
|
static inline void __flush_icache_all(void)
|
||
|
|
{
|
||
|
|
#ifdef CACHE_INVALIDATEI
|
||
|
|
__asm__ __volatile__ (
|
||
|
|
"movec %0, %%CACR\n\t"
|
||
|
|
"nop\n\t"
|
||
|
|
: : "r" (CACHE_INVALIDATEI) );
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void __flush_dcache_all(void)
|
||
|
|
{
|
||
|
|
#ifdef CACHE_PUSH
|
||
|
|
mcf_cache_push();
|
||
|
|
#endif
|
||
|
|
#ifdef CACHE_INVALIDATED
|
||
|
|
__asm__ __volatile__ (
|
||
|
|
"movec %0, %%CACR\n\t"
|
||
|
|
"nop\n\t"
|
||
|
|
: : "r" (CACHE_INVALIDATED) );
|
||
|
|
#else
|
||
|
|
/* Flush the write buffer */
|
||
|
|
__asm__ __volatile__ ( "nop" );
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Push cache entries at supplied address. We want to write back any dirty
|
||
|
|
* data and then invalidate the cache lines associated with this address.
|
||
|
|
*/
|
||
|
|
static inline void cache_push(unsigned long paddr, int len)
|
||
|
|
{
|
||
|
|
__flush_cache_all();
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Clear cache entries at supplied address (that is don't write back any
|
||
|
|
* dirty data).
|
||
|
|
*/
|
||
|
|
static inline void cache_clear(unsigned long paddr, int len)
|
||
|
|
{
|
||
|
|
__clear_cache_all();
|
||
|
|
}
|
||
|
|
|
||
|
|
#include <asm-generic/cacheflush.h>
|
||
|
|
|
||
|
|
#endif /* _M68KNOMMU_CACHEFLUSH_H */
|