#ifndef _M68K_CACHEFLUSH_H#define _M68K_CACHEFLUSH_H #include <linux/mm.h> /* * Cache handling functions */ #define flush_icache()						\({								\	if (CPU_IS_040_OR_060)					\		__asm__ __volatile__("nop\n\t"			\				     ".chip 68040\n\t"		\				     "cinva %%ic\n\t"		\				     ".chip 68k" : );		\	else {							\		unsigned long _tmp;				\		__asm__ __volatile__("movec %%cacr,%0\n\t"	\				     "orw %1,%0\n\t"		\				     "movec %0,%%cacr"		\				     : "=&d" (_tmp)		\				     : "id" (FLUSH_I));	\	}							\}) /* * invalidate the cache for the specified memory range. * It starts at the physical address specified for * the given number of bytes. */extern void cache_clear(unsigned long paddr, int len);/* * push any dirty cache in the specified memory range. * It starts at the physical address specified for * the given number of bytes. */extern void cache_push(unsigned long paddr, int len); /* * push and invalidate pages in the specified user virtual * memory range. */extern void cache_push_v(unsigned long vaddr, int len); /* cache code */#define FLUSH_I_AND_D	(0x00000808)#define FLUSH_I		(0x00000008) /* This is needed whenever the virtual mapping of the current   process changes.  */#define __flush_cache_all()					\({								\	if (CPU_IS_040_OR_060)					\		__asm__ __volatile__("nop\n\t"			\				     ".chip 68040\n\t"		\				     "cpusha %dc\n\t"		\				     ".chip 68k");		\	else {							\		unsigned long _tmp;				\		__asm__ __volatile__("movec %%cacr,%0\n\t"	\				     "orw %1,%0\n\t"		\				     "movec %0,%%cacr"		\				     : "=&d" (_tmp)		\				     : "di" (FLUSH_I_AND_D));	\	}							\}) #define __flush_cache_030()					\({								\	if (CPU_IS_020_OR_030) {				\		unsigned long _tmp;				\		__asm__ __volatile__("movec %%cacr,%0\n\t"	\				     "orw %1,%0\n\t"		\				     "movec %0,%%cacr"		\				     : "=&d" (_tmp)		\				     : "di" (FLUSH_I_AND_D));	\	}							\}) #define flush_cache_all() __flush_cache_all() #define flush_cache_vmap(start, end)		flush_cache_all()#define flush_cache_vunmap(start, end)		flush_cache_all() static inline void flush_cache_mm(struct mm_struct *mm){	if (mm == current->mm)		__flush_cache_030();} /* flush_cache_range/flush_cache_page must be macros to avoid   a dependency on linux/mm.h, which includes this file... */static inline void flush_cache_range(struct vm_area_struct *vma,				     unsigned long start,				     unsigned long end){	if (vma->vm_mm == current->mm)	        __flush_cache_030();} static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn){	if (vma->vm_mm == current->mm)	        __flush_cache_030();}  /* Push the page at kernel virtual address and clear the icache *//* RZ: use cpush %bc instead of cpush %dc, cinv %ic */static inline void __flush_page_to_ram(void *vaddr){	if (CPU_IS_040_OR_060) {		__asm__ __volatile__("nop\n\t"				     ".chip 68040\n\t"				     "cpushp %%bc,(%0)\n\t"				     ".chip 68k"				     : : "a" (__pa(vaddr)));	} else {		unsigned long _tmp;		__asm__ __volatile__("movec %%cacr,%0\n\t"				     "orw %1,%0\n\t"				     "movec %0,%%cacr"				     : "=&d" (_tmp)				     : "di" (FLUSH_I));	}} #define flush_dcache_page(page)		__flush_page_to_ram(page_address(page))#define flush_dcache_mmap_lock(mapping)		do { } while (0)#define flush_dcache_mmap_unlock(mapping)	do { } while (0)#define flush_icache_page(vma, page)	__flush_page_to_ram(page_address(page)) extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,				    unsigned long addr, int len);extern void flush_icache_range(unsigned long address, unsigned long endaddr); static inline void copy_to_user_page(struct vm_area_struct *vma,				     struct page *page, unsigned long vaddr,				     void *dst, void *src, int len){	flush_cache_page(vma, vaddr, page_to_pfn(page));	memcpy(dst, src, len);	flush_icache_user_range(vma, page, vaddr, len);}static inline void copy_from_user_page(struct vm_area_struct *vma,				       struct page *page, unsigned long vaddr,				       void *dst, void *src, int len){	flush_cache_page(vma, vaddr, page_to_pfn(page));	memcpy(dst, src, len);} #endif /* _M68K_CACHEFLUSH_H */