/*********************************************************************//* hpi.h v0.00                                                       *//* Copyright (c) 1997 Texas Instruments Incorporated                 *//*********************************************************************//*********************************************************************//* This header defines the macros, symbols, fuctions that are needed *//* for accessing functions of the Host Port Interface (HPI).         *//* The MACROS defined here are dependent on the symbol definitions   *//* contained in regs.h.                                              *//*********************************************************************/#include <stdlib.h>#include <limits.h>/*********************************************************************//* INCLUDE MEMORY-MAPPED REGISTER DEFINITIONS                        *//*********************************************************************/#include "regs54xx.h"
/*********************************************************************//* Define HPI interface constants                                    *//*                                                                   *//* NO_HPI_PINS	- Number of configurable HPI pins                    *//*********************************************************************/#define NO_HPI_PINS 16    /*********************************************************************//* ENABLE_HPI_MEM - enables C54x cpu access to shared host memory    *//*********************************************************************/#define ENABLE_HPI_MEM\	HPIC |= MASK_BIT(SMOD)/*********************************************************************//* DISABLE_HPI_MEM - disables C54x cpu access to shared host memory  *//*********************************************************************/#define DISABLE_HPI_MEM\	HPIC &= ~MASK_BIT(SMOD)/*********************************************************************//* HOST_INTERRUPT - posts interrupt to host                          *//*********************************************************************/#define HOST_INTERRUPT\	HPIC |= MASK_BIT(HINT)/*********************************************************************//* Function Prototypes                                               *//*                                                                   *//* reset_hpi_config	- initialize HPI config data structures      *//* config_host_ctrl_pin	- configure HPI host control pin             *//* config_host_data_bus	- configure HPI HD0-HD7 data bus             *//* init_hpi		- initialize HPI interface                   *//*********************************************************************/void reset_hpi_config(unsigned int max);     int config_host_ctrl_pin(short pin, void *addr, short bit, short rw,short inv, unsigned int delay); int config_host_data_bus(void *addr, short bit); int init_hpi(short bob, void *hpi_addr); int write_hpi_data(char *val, void *hpi_addr, unsigned int no_items,unsigned int size, short autoinc);int get_hpi_data(char *val, void *hpi_addr, unsigned int no_items,unsigned int size, short autoinc);int client_interrupt();int clear_client_interrupt();int set_hpi_addr(void *addr);
static void write_hpi_ctrl(unsigned short ctrl);
unsigned int read_data(void);