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) 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_icache_range(start,len) __flush_cache_all()
16 #define flush_icache_page(vma,pg) do { } while (0)
17 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
18 #define flush_cache_vmap(start, end) flush_cache_all()
19 #define flush_cache_vunmap(start, end) flush_cache_all()
20
21 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
22 memcpy(dst, src, len)
23 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
24 memcpy(dst, src, len)
25
26 extern inline void __flush_cache_all(void)
27 {
28 #ifdef CONFIG_M5407
29 /*
30 * Use cpushl to push and invalidate all cache lines.
31 * Gas doesn't seem to know how to generate the ColdFire
32 * cpushl instruction... Oh well, bit stuff it for now.
33 */
34 __asm__ __volatile__ (
35 "nop\n\t"
36 "clrl %%d0\n\t"
37 "1:\n\t"
38 "movel %%d0,%%a0\n\t"
39 "2:\n\t"
40 ".word 0xf4e8\n\t"
41 "addl #0x10,%%a0\n\t"
42 "cmpl #0x00000800,%%a0\n\t"
43 "blt 2b\n\t"
44 "addql #1,%%d0\n\t"
45 "cmpil #4,%%d0\n\t"
46 "bne 1b\n\t"
47 : : : "d0", "a0" );
48 #endif /* CONFIG_M5407 */
49 #ifdef CONFIG_M5272
50 __asm__ __volatile__ (
51 "movel #0x01000000, %%d0\n\t"
52 "movec %%d0, %%CACR\n\t"
53 "nop\n\t"
54 "movel #0x80000100, %%d0\n\t"
55 "movec %%d0, %%CACR\n\t"
56 "nop\n\t"
57 : : : "d0" );
58 #endif /* CONFIG_M5272 */
59 #if 0 /* CONFIG_M5249 */
60 __asm__ __volatile__ (
61 "movel #0x01000000, %%d0\n\t"
62 "movec %%d0, %%CACR\n\t"
63 "nop\n\t"
64 "movel #0xa0000200, %%d0\n\t"
65 "movec %%d0, %%CACR\n\t"
66 "nop\n\t"
67 : : : "d0" );
68 #endif /* CONFIG_M5249 */
69 }
70
71 #endif /* _M68KNOMMU_CACHEFLUSH_H */
72
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