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Diffstat (limited to 'arch/m68k/include/asm/cacheflush_no.h')
-rw-r--r--arch/m68k/include/asm/cacheflush_no.h95
1 files changed, 41 insertions, 54 deletions
diff --git a/arch/m68k/include/asm/cacheflush_no.h b/arch/m68k/include/asm/cacheflush_no.h
index 7085bd51668b..cb88aa96c4f1 100644
--- a/arch/m68k/include/asm/cacheflush_no.h
+++ b/arch/m68k/include/asm/cacheflush_no.h
@@ -2,21 +2,22 @@
2#define _M68KNOMMU_CACHEFLUSH_H 2#define _M68KNOMMU_CACHEFLUSH_H
3 3
4/* 4/*
5 * (C) Copyright 2000-2004, Greg Ungerer <gerg@snapgear.com> 5 * (C) Copyright 2000-2010, Greg Ungerer <gerg@snapgear.com>
6 */ 6 */
7#include <linux/mm.h> 7#include <linux/mm.h>
8#include <asm/mcfsim.h>
8 9
9#define flush_cache_all() __flush_cache_all() 10#define flush_cache_all() __flush_cache_all()
10#define flush_cache_mm(mm) do { } while (0) 11#define flush_cache_mm(mm) do { } while (0)
11#define flush_cache_dup_mm(mm) do { } while (0) 12#define flush_cache_dup_mm(mm) do { } while (0)
12#define flush_cache_range(vma, start, end) __flush_cache_all() 13#define flush_cache_range(vma, start, end) do { } while (0)
13#define flush_cache_page(vma, vmaddr) do { } while (0) 14#define flush_cache_page(vma, vmaddr) do { } while (0)
14#define flush_dcache_range(start,len) __flush_cache_all() 15#define flush_dcache_range(start, len) __flush_dcache_all()
15#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 16#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
16#define flush_dcache_page(page) do { } while (0) 17#define flush_dcache_page(page) do { } while (0)
17#define flush_dcache_mmap_lock(mapping) do { } while (0) 18#define flush_dcache_mmap_lock(mapping) do { } while (0)
18#define flush_dcache_mmap_unlock(mapping) do { } while (0) 19#define flush_dcache_mmap_unlock(mapping) do { } while (0)
19#define flush_icache_range(start,len) __flush_cache_all() 20#define flush_icache_range(start, len) __flush_icache_all()
20#define flush_icache_page(vma,pg) do { } while (0) 21#define flush_icache_page(vma,pg) do { } while (0)
21#define flush_icache_user_range(vma,pg,adr,len) do { } while (0) 22#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
22#define flush_cache_vmap(start, end) do { } while (0) 23#define flush_cache_vmap(start, end) do { } while (0)
@@ -27,66 +28,52 @@
27#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 28#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
28 memcpy(dst, src, len) 29 memcpy(dst, src, len)
29 30
31void mcf_cache_push(void);
32
30static inline void __flush_cache_all(void) 33static inline void __flush_cache_all(void)
31{ 34{
32#if defined(CONFIG_M5407) || defined(CONFIG_M548x) 35#ifdef CACHE_PUSH
33 /* 36 mcf_cache_push();
34 * Use cpushl to push and invalidate all cache lines. 37#endif
35 * Gas doesn't seem to know how to generate the ColdFire 38#ifdef CACHE_INVALIDATE
36 * cpushl instruction... Oh well, bit stuff it for now.
37 */
38 __asm__ __volatile__ (
39 "nop\n\t"
40 "clrl %%d0\n\t"
41 "1:\n\t"
42 "movel %%d0,%%a0\n\t"
43 "2:\n\t"
44 ".word 0xf468\n\t"
45 "addl #0x10,%%a0\n\t"
46 "cmpl #0x00000800,%%a0\n\t"
47 "blt 2b\n\t"
48 "addql #1,%%d0\n\t"
49 "cmpil #4,%%d0\n\t"
50 "bne 1b\n\t"
51 "movel #0xb6088500,%%d0\n\t"
52 "movec %%d0,%%CACR\n\t"
53 : : : "d0", "a0" );
54#endif /* CONFIG_M5407 */
55#if defined(CONFIG_M523x) || defined(CONFIG_M527x)
56 __asm__ __volatile__ (
57 "movel #0x81400100, %%d0\n\t"
58 "movec %%d0, %%CACR\n\t"
59 "nop\n\t"
60 : : : "d0" );
61#endif /* CONFIG_M523x || CONFIG_M527x */
62#if defined(CONFIG_M528x)
63 __asm__ __volatile__ (
64 "movel #0x81000200, %%d0\n\t"
65 "movec %%d0, %%CACR\n\t"
66 "nop\n\t"
67 : : : "d0" );
68#endif /* CONFIG_M528x */
69#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
70 __asm__ __volatile__ ( 39 __asm__ __volatile__ (
71 "movel #0x81000100, %%d0\n\t" 40 "movel %0, %%d0\n\t"
72 "movec %%d0, %%CACR\n\t" 41 "movec %%d0, %%CACR\n\t"
73 "nop\n\t" 42 "nop\n\t"
74 : : : "d0" ); 43 : : "i" (CACHE_INVALIDATE) : "d0" );
75#endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */ 44#endif
76#ifdef CONFIG_M5249 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
77 __asm__ __volatile__ ( 55 __asm__ __volatile__ (
78 "movel #0xa1000200, %%d0\n\t" 56 "movel %0, %%d0\n\t"
79 "movec %%d0, %%CACR\n\t" 57 "movec %%d0, %%CACR\n\t"
80 "nop\n\t" 58 "nop\n\t"
81 : : : "d0" ); 59 : : "i" (CACHE_INVALIDATEI) : "d0" );
82#endif /* CONFIG_M5249 */ 60#endif
83#ifdef CONFIG_M532x 61}
62
63static inline void __flush_dcache_all(void)
64{
65#ifdef CACHE_PUSH
66 mcf_cache_push();
67#endif
68#ifdef CACHE_INVALIDATED
84 __asm__ __volatile__ ( 69 __asm__ __volatile__ (
85 "movel #0x81000200, %%d0\n\t" 70 "movel %0, %%d0\n\t"
86 "movec %%d0, %%CACR\n\t" 71 "movec %%d0, %%CACR\n\t"
87 "nop\n\t" 72 "nop\n\t"
88 : : : "d0" ); 73 : : "i" (CACHE_INVALIDATED) : "d0" );
89#endif /* CONFIG_M532x */ 74#else
75 /* Flush the wrtite buffer */
76 __asm__ __volatile__ ( "nop" );
77#endif
90} 78}
91
92#endif /* _M68KNOMMU_CACHEFLUSH_H */ 79#endif /* _M68KNOMMU_CACHEFLUSH_H */
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