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/* * 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_dup_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__ */ |