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Diffstat (limited to 'include/asm-v850/cacheflush.h')
| -rw-r--r-- | include/asm-v850/cacheflush.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/include/asm-v850/cacheflush.h b/include/asm-v850/cacheflush.h new file mode 100644 index 00000000000..e1a87f82f1a --- /dev/null +++ b/include/asm-v850/cacheflush.h @@ -0,0 +1,69 @@ +/* + * include/asm-v850/cacheflush.h + * + * Copyright (C) 2001,02,03 NEC Electronics Corporation + * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + */ + +#ifndef __V850_CACHEFLUSH_H__ +#define __V850_CACHEFLUSH_H__ + +/* Somebody depends on this; sigh... */ +#include <linux/mm.h> + +#include <asm/machdep.h> + + +/* The following are all used by the kernel in ways that only affect + systems with MMUs, so we don't need them. */ +#define flush_cache_all() ((void)0) +#define flush_cache_mm(mm) ((void)0) +#define flush_cache_range(vma, start, end) ((void)0) +#define flush_cache_page(vma, vmaddr, pfn) ((void)0) +#define flush_dcache_page(page) ((void)0) +#define flush_dcache_mmap_lock(mapping) ((void)0) +#define flush_dcache_mmap_unlock(mapping) ((void)0) +#define flush_cache_vmap(start, end) ((void)0) +#define flush_cache_vunmap(start, end) ((void)0) + +#ifdef CONFIG_NO_CACHE + +/* Some systems have no cache at all, in which case we don't need these + either. */ +#define flush_icache() ((void)0) +#define flush_icache_range(start, end) ((void)0) +#define flush_icache_page(vma,pg) ((void)0) +#define flush_icache_user_range(vma,pg,adr,len) ((void)0) +#define flush_cache_sigtramp(vaddr) ((void)0) + +#else /* !CONFIG_NO_CACHE */ + +struct page; +struct mm_struct; +struct vm_area_struct; + +/* Otherwise, somebody had better define them. */ +extern void flush_icache (void); +extern void flush_icache_range (unsigned long start, unsigned long end); +extern void flush_icache_page (struct vm_area_struct *vma, struct page *page); +extern void flush_icache_user_range (struct vm_area_struct *vma, + struct page *page, + unsigned long adr, int len); +extern void flush_cache_sigtramp (unsigned long addr); + +#endif /* CONFIG_NO_CACHE */ + +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ +do { memcpy(dst, src, len); \ + flush_icache_user_range(vma, page, vaddr, len); \ +} while (0) +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + memcpy(dst, src, len) + +#endif /* __V850_CACHEFLUSH_H__ */ |