1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _M68KNOMMU_CACHEFLUSH_H
 3#define _M68KNOMMU_CACHEFLUSH_H
 4
 5/*
 6 * (C) Copyright 2000-2010, Greg Ungerer <gerg@snapgear.com>
 7 */
 8#include <linux/mm.h>
 9#include <asm/mcfsim.h>
10
11#define flush_cache_all()			__flush_cache_all()
 
 
 
 
12#define flush_dcache_range(start, len)		__flush_dcache_all()
 
 
 
 
13#define flush_icache_range(start, len)		__flush_icache_all()
 
 
 
 
 
 
 
 
 
14
15void mcf_cache_push(void);
16
17static inline void __clear_cache_all(void)
18{
19#ifdef CACHE_INVALIDATE
20	__asm__ __volatile__ (
21		"movec	%0, %%CACR\n\t"
22		"nop\n\t"
23		: : "r" (CACHE_INVALIDATE) );
24#endif
25}
26
27static inline void __flush_cache_all(void)
28{
29#ifdef CACHE_PUSH
30	mcf_cache_push();
31#endif
32	__clear_cache_all();
 
 
 
 
 
 
33}
34
35/*
36 * Some ColdFire parts implement separate instruction and data caches,
37 * on those we should just flush the appropriate cache. If we don't need
38 * to do any specific flushing then this will be optimized away.
39 */
40static inline void __flush_icache_all(void)
41{
42#ifdef CACHE_INVALIDATEI
43	__asm__ __volatile__ (
44		"movec	%0, %%CACR\n\t"
 
45		"nop\n\t"
46		: : "r" (CACHE_INVALIDATEI) );
47#endif
48}
49
50static inline void __flush_dcache_all(void)
51{
52#ifdef CACHE_PUSH
53	mcf_cache_push();
54#endif
55#ifdef CACHE_INVALIDATED
56	__asm__ __volatile__ (
57		"movec	%0, %%CACR\n\t"
 
58		"nop\n\t"
59		: : "r" (CACHE_INVALIDATED) );
60#else
61	/* Flush the write buffer */
62	__asm__ __volatile__ ( "nop" );
63#endif
64}
65
66/*
67 * Push cache entries at supplied address. We want to write back any dirty
68 * data and then invalidate the cache lines associated with this address.
69 */
70static inline void cache_push(unsigned long paddr, int len)
71{
72	__flush_cache_all();
73}
74
75/*
76 * Clear cache entries at supplied address (that is don't write back any
77 * dirty data).
78 */
79static inline void cache_clear(unsigned long paddr, int len)
80{
81	__clear_cache_all();
82}
83
84#include <asm-generic/cacheflush.h>
85
86#endif /* _M68KNOMMU_CACHEFLUSH_H */

 
 1#ifndef _M68KNOMMU_CACHEFLUSH_H
 2#define _M68KNOMMU_CACHEFLUSH_H
 3
 4/*
 5 * (C) Copyright 2000-2010, Greg Ungerer <gerg@snapgear.com>
 6 */
 7#include <linux/mm.h>
 8#include <asm/mcfsim.h>
 9
10#define flush_cache_all()			__flush_cache_all()
11#define flush_cache_mm(mm)			do { } while (0)
12#define flush_cache_dup_mm(mm)			do { } while (0)
13#define flush_cache_range(vma, start, end)	do { } while (0)
14#define flush_cache_page(vma, vmaddr)		do { } while (0)
15#define flush_dcache_range(start, len)		__flush_dcache_all()
16#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
17#define flush_dcache_page(page)			do { } while (0)
18#define flush_dcache_mmap_lock(mapping)		do { } while (0)
19#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
20#define flush_icache_range(start, len)		__flush_icache_all()
21#define flush_icache_page(vma,pg)		do { } while (0)
22#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
23#define flush_cache_vmap(start, end)		do { } while (0)
24#define flush_cache_vunmap(start, end)		do { } while (0)
25
26#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
27	memcpy(dst, src, len)
28#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
29	memcpy(dst, src, len)
30
31void mcf_cache_push(void);
32
 
 
 
 
 
 
 
 
 
 
33static inline void __flush_cache_all(void)
34{
35#ifdef CACHE_PUSH
36	mcf_cache_push();
37#endif
38#ifdef CACHE_INVALIDATE
39	__asm__ __volatile__ (
40		"movel	%0, %%d0\n\t"
41		"movec	%%d0, %%CACR\n\t"
42		"nop\n\t"
43		: : "i" (CACHE_INVALIDATE) : "d0" );
44#endif
45}
46
47/*
48 * Some ColdFire parts implement separate instruction and data caches,
49 * on those we should just flush the appropriate cache. If we don't need
50 * to do any specific flushing then this will be optimized away.
51 */
52static inline void __flush_icache_all(void)
53{
54#ifdef CACHE_INVALIDATEI
55	__asm__ __volatile__ (
56		"movel	%0, %%d0\n\t"
57		"movec	%%d0, %%CACR\n\t"
58		"nop\n\t"
59		: : "i" (CACHE_INVALIDATEI) : "d0" );
60#endif
61}
62
63static inline void __flush_dcache_all(void)
64{
65#ifdef CACHE_PUSH
66	mcf_cache_push();
67#endif
68#ifdef CACHE_INVALIDATED
69	__asm__ __volatile__ (
70		"movel	%0, %%d0\n\t"
71		"movec	%%d0, %%CACR\n\t"
72		"nop\n\t"
73		: : "i" (CACHE_INVALIDATED) : "d0" );
74#else
75	/* Flush the wrtite buffer */
76	__asm__ __volatile__ ( "nop" );
77#endif
78}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
79#endif /* _M68KNOMMU_CACHEFLUSH_H */