#ifndef _MMU_CACHE_H_#define _MMU_CACHE_H_typedef struct cache_line_t{	ARMword tag;	/* 	cache line align address |						bit2: last half dirty						bit1: first half dirty						bit0: cache valid flag					*/	ARMword pa;		/*physical address*/	ARMword *data; /*array of cached data*/}cache_line_t;#define TAG_VALID_FLAG 0x00000001#define TAG_FIRST_HALF_DIRTY 0x00000002#define TAG_LAST_HALF_DIRTY	0x00000004/*cache set association*/typedef struct cache_set_s{	cache_line_t	*lines;	int cycle;}cache_set_t;enum{	CACHE_WRITE_BACK,	CACHE_WRITE_THROUGH,};typedef struct cache_s{	int	width;	/*bytes in a line*/	int way;	/*way of set asscociate*/	int	set;	/*num of set*/	int w_mode;	/*write back or write through*/	//int a_mode;	/*alloc mode: random or round-bin*/	cache_set_t *sets;	/**/}cache_t;typedef struct cache_desc_s{	int width;	int way;	int set;	int w_mode;//	int a_mode;}cache_desc_t;/*virtual address to cache set index*/#define va_cache_set(va, cache_t) \	(((va) / (cache_t)->width) & ((cache_t)->set - 1))/*virtual address to cahce line aligned*/#define va_cache_align(va, cache_t) \		((va) & ~((cache_t)->width - 1))/*virtaul address to cache line word index*/#define va_cache_index(va, cache_t) \		(((va) & ((cache_t)->width - 1)) >> WORD_SHT)/*see Page 558 in arm manual*//*set/index format value to cache set value*/#define index_cache_set(index, cache_t) \	(((index) / (cache_t)->width) & ((cache_t)->set - 1))/*************************cache********************//* mmu cache init * * @cache_t :cache_t to init * @width	:cache line width in byte * @way		:way of each cache set * @set		:cache set num * @w_mode	:cache w_mode * * $ -1: error * 	 0: sucess */intmmu_cache_init(cache_t *cache_t, int width, int way, int set, int w_mode);/* free a cache_t's inner data, the ptr self is not freed, * when needed do like below: * 		mmu_cache_exit(cache); * 		free(cache_t); * * @cache_t : the cache_t to free */voidmmu_cache_exit(cache_t *cache_t);/* mmu cache search * * @state	:ARMul_State * @cache_t	:cache_t to search * @va		:virtual address * * $	NULL:	no cache match * 		cache	:cache matched * */cache_line_t *mmu_cache_search(ARMul_State *state, cache_t *cache_t, ARMword va);/*  mmu cache search by set/index  * * @state	:ARMul_State * @cache_t	:cache_t to search * @index       :set/index value.  * * $	NULL:	no cache match * 		cache	:cache matched * */cache_line_t *mmu_cache_search_by_index(ARMul_State *state, cache_t *cache_t, ARMword index);/* mmu cache alloc * * @state :ARMul_State * @cache_t	:cache_t to alloc from * @va		:virtual address that require cache alloc, need not cache aligned * @pa		:physical address of va * * $	cache_alloced, always alloc OK */cache_line_t *mmu_cache_alloc(ARMul_State *state, cache_t *cache_t, ARMword va, ARMword pa);/* mmu_cache_write_back write cache data to memory * * @state: * @cache_t :cache_t of the cache line * @cache : cache line */voidmmu_cache_write_back(ARMul_State *state, cache_t *cache_t, cache_line_t *cache);/* mmu_cache_clean: clean a cache of va in cache_t * * @state	:ARMul_State * @cache_t	:cache_t to clean * @va		:virtaul address */voidmmu_cache_clean(ARMul_State *state, cache_t *cache_t, ARMword va);voidmmu_cache_clean_by_index(ARMul_State *state, cache_t *cache_t, ARMword index);/* mmu_cache_invalidate : invalidate a cache of va * * @state	:ARMul_State * @cache_t	:cache_t to invalid * @va		:virt_addr to invalid */voidmmu_cache_invalidate(ARMul_State *state, cache_t *cache_t, ARMword va);voidmmu_cache_invalidate_by_index(ARMul_State *state, cache_t *cache_t, ARMword index);voidmmu_cache_invalidate_all(ARMul_State *state, cache_t *cache_t);voidmmu_cache_soft_flush(ARMul_State *state, cache_t *cache_t, ARMword pa);#endif /*_MMU_CACHE_H_*/