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1394f032 BW |
1 | /* |
2 | * File: include/asm-blackfin/cacheflush.h | |
3 | * Based on: include/asm-m68knommu/cacheflush.h | |
4 | * Author: LG Soft India | |
5 | * Copyright (C) 2004 Analog Devices Inc. | |
6 | * Created: Tue Sep 21 2004 | |
7 | * Description: Blackfin low-level cache routines adapted from the i386 | |
8 | * and PPC versions by Greg Ungerer (gerg@snapgear.com) | |
9 | * | |
10 | * Modified: | |
11 | * | |
12 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2, or (at your option) | |
17 | * any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; see the file COPYING. | |
26 | * If not, write to the Free Software Foundation, | |
27 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
28 | */ | |
29 | ||
30 | #ifndef _BLACKFIN_CACHEFLUSH_H | |
31 | #define _BLACKFIN_CACHEFLUSH_H | |
32 | ||
33 | #include <asm/cplb.h> | |
34 | ||
35 | extern void blackfin_icache_dcache_flush_range(unsigned int, unsigned int); | |
36 | extern void blackfin_icache_flush_range(unsigned int, unsigned int); | |
37 | extern void blackfin_dcache_flush_range(unsigned int, unsigned int); | |
38 | extern void blackfin_dcache_invalidate_range(unsigned int, unsigned int); | |
39 | extern void blackfin_dflush_page(void *); | |
40 | ||
41 | #define flush_dcache_mmap_lock(mapping) do { } while (0) | |
42 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) | |
43 | #define flush_cache_mm(mm) do { } while (0) | |
44 | #define flush_cache_range(vma, start, end) do { } while (0) | |
45 | #define flush_cache_page(vma, vmaddr) do { } while (0) | |
46 | #define flush_cache_vmap(start, end) do { } while (0) | |
47 | #define flush_cache_vunmap(start, end) do { } while (0) | |
48 | ||
49 | static inline void flush_icache_range(unsigned start, unsigned end) | |
50 | { | |
3bebca2d | 51 | #if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_ICACHE) |
1394f032 | 52 | |
3bebca2d | 53 | # if defined(CONFIG_BFIN_WT) |
1394f032 BW |
54 | blackfin_icache_flush_range((start), (end)); |
55 | # else | |
56 | blackfin_icache_dcache_flush_range((start), (end)); | |
57 | # endif | |
58 | ||
59 | #else | |
60 | ||
3bebca2d | 61 | # if defined(CONFIG_BFIN_ICACHE) |
1394f032 BW |
62 | blackfin_icache_flush_range((start), (end)); |
63 | # endif | |
3bebca2d | 64 | # if defined(CONFIG_BFIN_DCACHE) |
1394f032 BW |
65 | blackfin_dcache_flush_range((start), (end)); |
66 | # endif | |
67 | ||
68 | #endif | |
69 | } | |
70 | ||
71 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ | |
72 | do { memcpy(dst, src, len); \ | |
73 | flush_icache_range ((unsigned) (dst), (unsigned) (dst) + (len)); \ | |
74 | } while (0) | |
75 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) memcpy(dst, src, len) | |
76 | ||
3bebca2d | 77 | #if defined(CONFIG_BFIN_DCACHE) |
1394f032 BW |
78 | # define invalidate_dcache_range(start,end) blackfin_dcache_invalidate_range((start), (end)) |
79 | #else | |
80 | # define invalidate_dcache_range(start,end) do { } while (0) | |
81 | #endif | |
3bebca2d | 82 | #if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_WB) |
1394f032 BW |
83 | # define flush_dcache_range(start,end) blackfin_dcache_flush_range((start), (end)) |
84 | # define flush_dcache_page(page) blackfin_dflush_page(page_address(page)) | |
85 | #else | |
86 | # define flush_dcache_range(start,end) do { } while (0) | |
87 | # define flush_dcache_page(page) do { } while (0) | |
88 | #endif | |
89 | ||
3bebca2d | 90 | #endif /* _BLACKFIN_ICACHEFLUSH_H */ |