/* cacheflush.h: FRV cache flushing routines * * Copyright (C) 2004 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 License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _ASM_CACHEFLUSH_H#define _ASM_CACHEFLUSH_H /* Keep includes the same across arches.  */#include <linux/mm.h> /* * virtually-indexed cache management (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_mmap_lock(mapping)		do {} while(0)#define flush_dcache_mmap_unlock(mapping)	do {} while(0) /* * physically-indexed cache managment * - see arch/frv/lib/cache.S */extern void frv_dcache_writeback(unsigned long start, unsigned long size);extern void frv_cache_invalidate(unsigned long start, unsigned long size);extern void frv_icache_invalidate(unsigned long start, unsigned long size);extern void frv_cache_wback_inv(unsigned long start, unsigned long size); static inline void __flush_cache_all(void){	asm volatile("	dcef	@(gr0,gr0),#1	\n"		     "	icei	@(gr0,gr0),#1	\n"		     "	membar			\n"		     : : : "memory"		     );} /* dcache/icache coherency... */#ifdef CONFIG_MMUextern void flush_dcache_page(struct page *page);#elsestatic inline void flush_dcache_page(struct page *page){	unsigned long addr = page_to_phys(page);	frv_dcache_writeback(addr, addr + PAGE_SIZE);}#endif static inline void flush_page_to_ram(struct page *page){	flush_dcache_page(page);} static inline void flush_icache(void){	__flush_cache_all();} static inline void flush_icache_range(unsigned long start, unsigned long end){	frv_cache_wback_inv(start, end);} #ifdef CONFIG_MMUextern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,				    unsigned long start, unsigned long len);#elsestatic inline void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,					   unsigned long start, unsigned long len){	frv_cache_wback_inv(start, start + len);}#endif static inline void flush_icache_page(struct vm_area_struct *vma, struct page *page){	flush_icache_user_range(vma, page, page_to_phys(page), PAGE_SIZE);} /* * permit ptrace to access another process's address space through the icache * and the dcache */#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 /* _ASM_CACHEFLUSH_H */