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m68knommu: remove old cache management cruft from mm code

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Remove cache management cruft.  This code is dead, all the cache manangement
functions for the ColdFire exist in the header file
include/asm-m68knommu/cacheflush.h.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Greg Ungerer 2007-07-15 23:38:33 -07:00 committed by Linus Torvalds
parent 2f75d1098c
commit 17d8725d36
1 changed files with 2 additions and 78 deletions
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80
arch/m68knommu/mm/memory.c
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@ -17,90 +17,14 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <asm/setup.h>
#include <asm/segment.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/system.h>
#include <asm/traps.h>
#include <asm/io.h>
/*
* cache_clear() semantics: Clear any cache entries for the area in question,
* without writing back dirty entries first. This is useful if the data will
* be overwritten anyway, e.g. by DMA to memory. The range is defined by a
* _physical_ address.
*/
void cache_clear (unsigned long paddr, int len)
{
}
/*
* Define cache invalidate functions. The ColdFire 5407 is really
* the only processor that needs to do some work here. Anything
* that has separate data and instruction caches will be a problem.
*/
#ifdef CONFIG_M5407
static __inline__ void cache_invalidate_lines(unsigned long paddr, int len)
{
unsigned long sset, eset;
sset = (paddr & 0x00000ff0);
eset = ((paddr + len) & 0x0000ff0) + 0x10;
__asm__ __volatile__ (
"nop\n\t"
"clrl %%d0\n\t"
"1:\n\t"
"movel %0,%%a0\n\t"
"addl %%d0,%%a0\n\t"
"2:\n\t"
".word 0xf4e8\n\t"
"addl #0x10,%%a0\n\t"
"cmpl %1,%%a0\n\t"
"blt 2b\n\t"
"addql #1,%%d0\n\t"
"cmpil #4,%%d0\n\t"
"bne 1b"
: : "a" (sset), "a" (eset) : "d0", "a0" );
}
#else
#define cache_invalidate_lines(a,b)
#endif
/*
* cache_push() semantics: Write back any dirty cache data in the given area,
* and invalidate the range in the instruction cache. It needs not (but may)
* invalidate those entries also in the data cache. The range is defined by a
* _physical_ address.
*/
void cache_push (unsigned long paddr, int len)
{
cache_invalidate_lines(paddr, len);
}
/*
* cache_push_v() semantics: Write back any dirty cache data in the given
* area, and invalidate those entries at least in the instruction cache. This
* is intended to be used after data has been written that can be executed as
* code later. The range is defined by a _user_mode_ _virtual_ address (or,
* more exactly, the space is defined by the %sfc/%dfc register.)
*/
void cache_push_v (unsigned long vaddr, int len)
{
cache_invalidate_lines(vaddr, len);
}
/* Map some physical address range into the kernel address space. The
* code is copied and adapted from map_chunk().
* Map some physical address range into the kernel address space.
* The code is copied and adapted from map_chunk().
*/
unsigned long kernel_map(unsigned long paddr, unsigned long size,