[deliverable/linux.git] / include / asm-blackfin / cacheflush.h

/*
 * 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

#include <asm/cplb.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

#endif				/* _BLACKFIN_ICACHEFLUSH_H */
Commit	Line	Data
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));
1394f032 BW	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 */