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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/*
* File: include/asm-blackfin/cacheflush.h
* Based on: include/asm-m68knommu/cacheflush.h
* Author: LG Soft India
* Copyright (C) 2004 Analog Devices Inc.
* Created: Tue Sep 21 2004
* Description: Blackfin low-level cache routines adapted from the i386
* and PPC versions by Greg Ungerer (gerg@snapgear.com)
*
* Modified:
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* 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, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING.
* If not, write to the Free Software Foundation,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _BLACKFIN_CACHEFLUSH_H
#define _BLACKFIN_CACHEFLUSH_H
extern void blackfin_icache_dcache_flush_range(unsigned int, unsigned int);
extern void blackfin_icache_flush_range(unsigned int, unsigned int);
extern void blackfin_dcache_flush_range(unsigned int, unsigned int);
extern void blackfin_dcache_invalidate_range(unsigned int, unsigned int);
extern void blackfin_dflush_page(void *);
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
#define flush_cache_mm(mm) do { } while (0)
#define flush_cache_range(vma, start, end) do { } while (0)
#define flush_cache_page(vma, vmaddr) do { } while (0)
#define flush_cache_vmap(start, end) do { } while (0)
#define flush_cache_vunmap(start, end) do { } while (0)
static inline void flush_icache_range(unsigned start, unsigned end)
{
#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_ICACHE)
# if defined(CONFIG_BFIN_WT)
blackfin_icache_flush_range((start), (end));
# else
blackfin_icache_dcache_flush_range((start), (end));
# endif
#else
# if defined(CONFIG_BFIN_ICACHE)
blackfin_icache_flush_range((start), (end));
# endif
# if defined(CONFIG_BFIN_DCACHE)
blackfin_dcache_flush_range((start), (end));
# endif
#endif
}
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
do { memcpy(dst, src, len); \
flush_icache_range ((unsigned) (dst), (unsigned) (dst) + (len)); \
} while (0)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) memcpy(dst, src, len)
#if defined(CONFIG_BFIN_DCACHE)
# define invalidate_dcache_range(start,end) blackfin_dcache_invalidate_range((start), (end))
#else
# define invalidate_dcache_range(start,end) do { } while (0)
#endif
#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_WB)
# define flush_dcache_range(start,end) blackfin_dcache_flush_range((start), (end))
# define flush_dcache_page(page) blackfin_dflush_page(page_address(page))
#else
# define flush_dcache_range(start,end) do { } while (0)
# define flush_dcache_page(page) do { } while (0)
#endif
extern unsigned long reserved_mem_dcache_on;
extern unsigned long reserved_mem_icache_on;
static inline int bfin_addr_dcachable(unsigned long addr)
{
#ifdef CONFIG_BFIN_DCACHE
if (addr < (_ramend - DMA_UNCACHED_REGION))
return 1;
#endif
if (reserved_mem_dcache_on &&
addr >= _ramend && addr < physical_mem_end)
return 1;
return 0;
}
#endif /* _BLACKFIN_ICACHEFLUSH_H */
|
