1#ifndef _M68KNOMMU_CACHEFLUSH_H
2#define _M68KNOMMU_CACHEFLUSH_H
3
4/*
5 * (C) Copyright 2000-2004, Greg Ungerer <gerg@snapgear.com>
6 */
7#include <linux/mm.h>
8
9#define flush_cache_all()			__flush_cache_all()
10#define flush_cache_mm(mm)			do { } while (0)
11#define flush_cache_dup_mm(mm)			do { } while (0)
12#define flush_cache_range(vma, start, end)	__flush_cache_all()
13#define flush_cache_page(vma, vmaddr)		do { } while (0)
14#define flush_dcache_range(start,len)		__flush_cache_all()
15#define flush_dcache_page(page)			do { } while (0)
16#define flush_dcache_mmap_lock(mapping)		do { } while (0)
17#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
18#define flush_icache_range(start,len)		__flush_cache_all()
19#define flush_icache_page(vma,pg)		do { } while (0)
20#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
21#define flush_cache_vmap(start, end)		do { } while (0)
22#define flush_cache_vunmap(start, end)		do { } while (0)
23
24#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
25	memcpy(dst, src, len)
26#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
27	memcpy(dst, src, len)
28
29static inline void __flush_cache_all(void)
30{
31#ifdef CONFIG_M5407
32	/*
33	 *	Use cpushl to push and invalidate all cache lines.
34	 *	Gas doesn't seem to know how to generate the ColdFire
35	 *	cpushl instruction... Oh well, bit stuff it for now.
36	 */
37	__asm__ __volatile__ (
38		"nop\n\t"
39		"clrl	%%d0\n\t"
40		"1:\n\t"
41		"movel	%%d0,%%a0\n\t"
42		"2:\n\t"
43		".word	0xf468\n\t"
44		"addl	#0x10,%%a0\n\t"
45		"cmpl	#0x00000800,%%a0\n\t"
46		"blt	2b\n\t"
47		"addql	#1,%%d0\n\t"
48		"cmpil	#4,%%d0\n\t"
49		"bne	1b\n\t"
50		"movel	#0xb6088500,%%d0\n\t"
51		"movec	%%d0,%%CACR\n\t"
52		: : : "d0", "a0" );
53#endif /* CONFIG_M5407 */
54#if defined(CONFIG_M527x) || defined(CONFIG_M528x)
55	__asm__ __volatile__ (
56        	"movel	#0x81400100, %%d0\n\t"
57        	"movec	%%d0, %%CACR\n\t"
58		"nop\n\t"
59		: : : "d0" );
60#endif /* CONFIG_M527x || CONFIG_M528x */
61#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
62	__asm__ __volatile__ (
63        	"movel	#0x81000100, %%d0\n\t"
64        	"movec	%%d0, %%CACR\n\t"
65		"nop\n\t"
66		: : : "d0" );
67#endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
68#ifdef CONFIG_M5249
69	__asm__ __volatile__ (
70        	"movel	#0xa1000200, %%d0\n\t"
71        	"movec	%%d0, %%CACR\n\t"
72		"nop\n\t"
73		: : : "d0" );
74#endif /* CONFIG_M5249 */
75#ifdef CONFIG_M532x
76	__asm__ __volatile__ (
77        	"movel	#0x81000200, %%d0\n\t"
78        	"movec	%%d0, %%CACR\n\t"
79		"nop\n\t"
80		: : : "d0" );
81#endif /* CONFIG_M532x */
82}
83
84#endif /* _M68KNOMMU_CACHEFLUSH_H */
85