wb.h

模拟嵌入式硬件平台的软件源代码

#ifndef _MMU_WB_H_
#define _MMU_WB_H_

typedef struct wb_entry_s{
	ARMword pa;	//phy_addr
	ARMbyte *data;//data
	int nb;	//number byte to write
}wb_entry_t;

typedef struct wb_s{
	int num; //number of wb_entry
	int nb;	//number of byte of each entry
	int first;	//
	int last;	//
	int used;	//
	wb_entry_t *entrys;
}wb_t;

typedef struct wb_desc_s{
	int num;
	int nb;
}wb_desc_t;

/* wb_init
 * @wb_t	:wb_t to init
 * @num		:num of entrys
 * @nw		:num of word of each entry
 *
 * $	-1:error
 * 		 0:ok
 * */
int
mmu_wb_init(wb_t *wb_t, int num, int nb);


/* wb_exit
 * @wb_t :wb_t to exit
 * */
void
mmu_wb_exit(wb_t *wb);


/* wb_write_bytes :put bytess in Write Buffer
 * @state:	ARMul_State
 * @wb_t:	write buffer
 * @pa:		physical address
 * @data:	data ptr
 * @n		number of byte to write
 *
 * Note: write buffer merge is not implemented, can be done late
 * */
void
mmu_wb_write_bytess(ARMul_State *state, wb_t *wb_t, ARMword pa,
				ARMbyte *data, int n);


/* wb_drain_all
 * @wb_t wb_t to drain
 * */
void
mmu_wb_drain_all(ARMul_State *state, wb_t *wb_t);

#endif /*_MMU_WB_H_*/