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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
35extern void blackfin_icache_dcache_flush_range(unsigned int, unsigned int);
36extern void blackfin_icache_flush_range(unsigned int, unsigned int);
37extern void blackfin_dcache_flush_range(unsigned int, unsigned int);
38extern void blackfin_dcache_invalidate_range(unsigned int, unsigned int);
39extern 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
49static inline void flush_icache_range(unsigned start, unsigned end)
50{
51#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_ICACHE)
52
53# if defined(CONFIG_BFIN_WT)
54 blackfin_icache_flush_range((start), (end));
55# else
56 blackfin_icache_dcache_flush_range((start), (end));
57# endif
58
59#else
60
61# if defined(CONFIG_BFIN_ICACHE)
62 blackfin_icache_flush_range((start), (end));
63# endif
64# if defined(CONFIG_BFIN_DCACHE)
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) \
72do { 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
77#if defined(CONFIG_BFIN_DCACHE)
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
82#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_WB)
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
90#endif /* _BLACKFIN_ICACHEFLUSH_H */