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Linux kernel mirror (for testing)
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linux
1#ifndef _M68KNOMMU_CACHEFLUSH_H
2#define _M68KNOMMU_CACHEFLUSH_H
3
4/*
5 * (C) Copyright 2000-2002, 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_range(vma, start, end) do { } while (0)
12#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
13#define flush_dcache_range(start,len) do { } while (0)
14#define flush_dcache_page(page) do { } while (0)
15#define flush_dcache_mmap_lock(mapping) do { } while (0)
16#define flush_dcache_mmap_unlock(mapping) do { } while (0)
17#define flush_icache_range(start,len) __flush_cache_all()
18#define flush_icache_page(vma,pg) do { } while (0)
19#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
20#define flush_cache_vmap(start, end) flush_cache_all()
21#define flush_cache_vunmap(start, end) flush_cache_all()
22
23#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
24 memcpy(dst, src, len)
25#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
26 memcpy(dst, src, len)
27
28extern inline void __flush_cache_all(void)
29{
30#ifdef CONFIG_M5407
31 /*
32 * Use cpushl to push and invalidate all cache lines.
33 * Gas doesn't seem to know how to generate the ColdFire
34 * cpushl instruction... Oh well, bit stuff it for now.
35 */
36 __asm__ __volatile__ (
37 "nop\n\t"
38 "clrl %%d0\n\t"
39 "1:\n\t"
40 "movel %%d0,%%a0\n\t"
41 "2:\n\t"
42 ".word 0xf468\n\t"
43 "addl #0x10,%%a0\n\t"
44 "cmpl #0x00000800,%%a0\n\t"
45 "blt 2b\n\t"
46 "addql #1,%%d0\n\t"
47 "cmpil #4,%%d0\n\t"
48 "bne 1b\n\t"
49 "movel #0xb6088500,%%d0\n\t"
50 "movec %%d0,%%CACR\n\t"
51 : : : "d0", "a0" );
52#endif /* CONFIG_M5407 */
53#ifdef CONFIG_M5272
54 __asm__ __volatile__ (
55 "movel #0x01000000, %%d0\n\t"
56 "movec %%d0, %%CACR\n\t"
57 "nop\n\t"
58 "movel #0x80000100, %%d0\n\t"
59 "movec %%d0, %%CACR\n\t"
60 "nop\n\t"
61 : : : "d0" );
62#endif /* CONFIG_M5272 */
63#if 0 /* CONFIG_M5249 */
64 __asm__ __volatile__ (
65 "movel #0x01000000, %%d0\n\t"
66 "movec %%d0, %%CACR\n\t"
67 "nop\n\t"
68 "movel #0xa0000200, %%d0\n\t"
69 "movec %%d0, %%CACR\n\t"
70 "nop\n\t"
71 : : : "d0" );
72#endif /* CONFIG_M5249 */
73}
74
75#endif /* _M68KNOMMU_CACHEFLUSH_H */