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cacheflush.h
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cacheflush.h
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/* MN10300 Cache flushing
*
* Copyright (C) 2007 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 Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_CACHEFLUSH_H
#define _ASM_CACHEFLUSH_H
#ifndef __ASSEMBLY__
/* Keep includes the same across arches. */
#include <linux/mm.h>
/*
* virtually-indexed cache managment (our cache is physically indexed)
*/
#define flush_cache_all() do {} while (0)
#define flush_cache_mm(mm) do {} while (0)
#define flush_cache_dup_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_page(page) 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
*/
#ifndef CONFIG_MN10300_CACHE_DISABLED
extern void flush_icache_range(unsigned long start, unsigned long end);
extern void flush_icache_page(struct vm_area_struct *vma, struct page *pg);
#else
#define flush_icache_range(start, end) do {} while (0)
#define flush_icache_page(vma, pg) do {} while (0)
#endif
#define flush_icache_user_range(vma, pg, adr, len) \
flush_icache_range(adr, adr + len)
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
do { \
memcpy(dst, src, len); \
flush_icache_page(vma, page); \
} while (0)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
/*
* primitive routines
*/
#ifndef CONFIG_MN10300_CACHE_DISABLED
extern void mn10300_icache_inv(void);
extern void mn10300_dcache_inv(void);
extern void mn10300_dcache_inv_page(unsigned start);
extern void mn10300_dcache_inv_range(unsigned start, unsigned end);
extern void mn10300_dcache_inv_range2(unsigned start, unsigned size);
#ifdef CONFIG_MN10300_CACHE_WBACK
extern void mn10300_dcache_flush(void);
extern void mn10300_dcache_flush_page(unsigned start);
extern void mn10300_dcache_flush_range(unsigned start, unsigned end);
extern void mn10300_dcache_flush_range2(unsigned start, unsigned size);
extern void mn10300_dcache_flush_inv(void);
extern void mn10300_dcache_flush_inv_page(unsigned start);
extern void mn10300_dcache_flush_inv_range(unsigned start, unsigned end);
extern void mn10300_dcache_flush_inv_range2(unsigned start, unsigned size);
#else
#define mn10300_dcache_flush() do {} while (0)
#define mn10300_dcache_flush_page(start) do {} while (0)
#define mn10300_dcache_flush_range(start, end) do {} while (0)
#define mn10300_dcache_flush_range2(start, size) do {} while (0)
#define mn10300_dcache_flush_inv() mn10300_dcache_inv()
#define mn10300_dcache_flush_inv_page(start) \
mn10300_dcache_inv_page((start))
#define mn10300_dcache_flush_inv_range(start, end) \
mn10300_dcache_inv_range((start), (end))
#define mn10300_dcache_flush_inv_range2(start, size) \
mn10300_dcache_inv_range2((start), (size))
#endif /* CONFIG_MN10300_CACHE_WBACK */
#else
#define mn10300_icache_inv() do {} while (0)
#define mn10300_dcache_inv() do {} while (0)
#define mn10300_dcache_inv_page(start) do {} while (0)
#define mn10300_dcache_inv_range(start, end) do {} while (0)
#define mn10300_dcache_inv_range2(start, size) do {} while (0)
#define mn10300_dcache_flush() do {} while (0)
#define mn10300_dcache_flush_inv_page(start) do {} while (0)
#define mn10300_dcache_flush_inv() do {} while (0)
#define mn10300_dcache_flush_inv_range(start, end) do {} while (0)
#define mn10300_dcache_flush_inv_range2(start, size) do {} while (0)
#define mn10300_dcache_flush_page(start) do {} while (0)
#define mn10300_dcache_flush_range(start, end) do {} while (0)
#define mn10300_dcache_flush_range2(start, size) do {} while (0)
#endif /* CONFIG_MN10300_CACHE_DISABLED */
/*
* internal debugging function
*/
#ifdef CONFIG_DEBUG_PAGEALLOC
extern void kernel_map_pages(struct page *page, int numpages, int enable);
#endif
#endif /* __ASSEMBLY__ */
#endif /* _ASM_CACHEFLUSH_H */