1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/* cacheflush.h: FRV cache flushing routines
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_CACHEFLUSH_H
#define _ASM_CACHEFLUSH_H
/* Keep includes the same across arches. */
#include <linux/mm.h>
/*
* virtually-indexed cache management (our cache is physically indexed)
*/
#define flush_cache_all() do {} while(0)
#define flush_cache_mm(mm) do {} while(0)
#define flush_cache_range(mm, start, end) do {} while(0)
#define flush_cache_page(vma, vmaddr, pfn) do {} while(0)
#define flush_cache_vmap(start, end) do {} while(0)
#define flush_cache_vunmap(start, end) do {} while(0)
#define flush_dcache_mmap_lock(mapping) do {} while(0)
#define flush_dcache_mmap_unlock(mapping) do {} while(0)
/*
* physically-indexed cache managment
* - see arch/frv/lib/cache.S
*/
extern void frv_dcache_writeback(unsigned long start, unsigned long size);
extern void frv_cache_invalidate(unsigned long start, unsigned long size);
extern void frv_icache_invalidate(unsigned long start, unsigned long size);
extern void frv_cache_wback_inv(unsigned long start, unsigned long size);
static inline void __flush_cache_all(void)
{
asm volatile(" dcef @(gr0,gr0),#1 \n"
" icei @(gr0,gr0),#1 \n"
" membar \n"
: : : "memory"
);
}
/* dcache/icache coherency... */
#ifdef CONFIG_MMU
extern void flush_dcache_page(struct page *page);
#else
static inline void flush_dcache_page(struct page *page)
{
unsigned long addr = page_to_phys(page);
frv_dcache_writeback(addr, addr + PAGE_SIZE);
}
#endif
static inline void flush_page_to_ram(struct page *page)
{
flush_dcache_page(page);
}
static inline void flush_icache(void)
{
__flush_cache_all();
}
static inline void flush_icache_range(unsigned long start, unsigned long end)
{
frv_cache_wback_inv(start, end);
}
#ifdef CONFIG_MMU
extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
unsigned long start, unsigned long len);
#else
static inline void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
unsigned long start, unsigned long len)
{
frv_cache_wback_inv(start, start + len);
}
#endif
static inline void flush_icache_page(struct vm_area_struct *vma, struct page *page)
{
flush_icache_user_range(vma, page, page_to_phys(page), PAGE_SIZE);
}
#endif /* _ASM_CACHEFLUSH_H */
|
