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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/m68k/include/asm/cacheflush_no.h
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#ifndef _M68KNOMMU_CACHEFLUSH_H

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#define _M68KNOMMU_CACHEFLUSH_H

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/*

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 * (C) Copyright 2000-2010, Greg Ungerer <[email protected]>

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 */

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#include <linux/mm.h>

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#include <asm/mcfsim.h>

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#define flush_cache_all()			__flush_cache_all()

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#define flush_cache_mm(mm)			do { } while (0)

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#define flush_cache_dup_mm(mm)			do { } while (0)

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#define flush_cache_range(vma, start, end)	do { } while (0)

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#define flush_cache_page(vma, vmaddr)		do { } while (0)

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#define flush_dcache_range(start, len)		__flush_dcache_all()

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#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0

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#define flush_dcache_page(page)			do { } while (0)

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#define flush_dcache_mmap_lock(mapping)		do { } while (0)

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#define flush_dcache_mmap_unlock(mapping)	do { } while (0)

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#define flush_icache_range(start, len)		__flush_icache_all()

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#define flush_icache_page(vma,pg)		do { } while (0)

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#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)

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#define flush_cache_vmap(start, end)		do { } while (0)

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#define flush_cache_vunmap(start, end)		do { } while (0)

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

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	memcpy(dst, src, len)

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

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	memcpy(dst, src, len)

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void mcf_cache_push(void);

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static inline void __flush_cache_all(void)

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{

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#ifdef CACHE_PUSH

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	mcf_cache_push();

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#endif

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#ifdef CACHE_INVALIDATE

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	__asm__ __volatile__ (

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		"movel	%0, %%d0\n\t"

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		"movec	%%d0, %%CACR\n\t"

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		"nop\n\t"

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		: : "i" (CACHE_INVALIDATE) : "d0" );

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#endif

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}

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/*

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 * Some ColdFire parts implement separate instruction and data caches,

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 * on those we should just flush the appropriate cache. If we don't need

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 * to do any specific flushing then this will be optimized away.

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 */

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static inline void __flush_icache_all(void)

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{

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#ifdef CACHE_INVALIDATEI

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	__asm__ __volatile__ (

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		"movel	%0, %%d0\n\t"

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		"movec	%%d0, %%CACR\n\t"

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		"nop\n\t"

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		: : "i" (CACHE_INVALIDATEI) : "d0" );

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#endif

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}

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static inline void __flush_dcache_all(void)

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{

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#ifdef CACHE_PUSH

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	mcf_cache_push();

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#endif

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#ifdef CACHE_INVALIDATED

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	__asm__ __volatile__ (

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		"movel	%0, %%d0\n\t"

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		"movec	%%d0, %%CACR\n\t"

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		"nop\n\t"

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		: : "i" (CACHE_INVALIDATED) : "d0" );

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#else

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	/* Flush the wrtite buffer */

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	__asm__ __volatile__ ( "nop" );

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#endif

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}

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#endif /* _M68KNOMMU_CACHEFLUSH_H */

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