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/* 
 * jtag.h : the head file for jtag.c 
 *  
 * This head file defines the connection between parallel port and JTAG. 
 * Wiggler is supported by defaul. If you want to support other interfaces,  
 * please change the configuration by yourself. 
 * 
 * Copyright (C) 2004, OPEN-JTAG, All rights reserved. 
 */ 
  
 
#ifndef XJTAG_JTAG_H 
#define XJTAG_JTAG_H 
 
#include "types.h" 
 
#define WIGGLER 
 
/* 
 * The followint table shows the pin assignment of 25-pin  Parallel Printer Port.  
 * please refer to IEEE 1284 standard for detailed description. 
 * data port (Out)		    status port (In) 
 * bit[7] -- pin9 (Out)		bit[7] -- pin11 (In), busy (Hardware Inverted) 
 * bit[6] -- pin8 (Out)		bit[6] -- pin10 (In), Ack 
 * bit[5] -- pin7 (Out)		bit[5] -- pin12 (In), Paper out 
 * bit[4] -- pin6 (Out)		bit[4] -- pin13 (In), Select 
 * bit[3] -- pin5 (Out)		bit[3] -- pin15 (In), Error 
 * bit[2] -- pin4 (Out)		bit[2] -- IRQ(Not) 
 * bit[1] -- pin3 (Out)		bit[1] -- Reserved 
 * bit[0] -- pin2 (Out)		bit[0] -- Reserved 
 */ 
 
 
/* I/O address of parallet port */ 
#define PARAL_DATA_PORT 	0x378 
#define PARAL_STAT_PORT		0x379 
#define PARAL_INIT_DATA		0x0 
#define PARAL_PIN_11		0x80	//A special pin (Hardware Inverted)		 
 
 
/* Connection definition between JTAG & Parallel Port */ 
 
#ifdef WIGGLER 
 
//WIGGLER 
#define JTAG_NTRST_MASK		0x01 	// Pin2 
#define JTAG_TMS_MASK		0x02	// Pin3 
#define JTAG_TCK_MASK		0x04	// Pin4 
#define JTAG_TDI_MASK		0x08	// Pin5 
#define JTAG_TDO_MASK		0x80	// Pin11 Hardware Inverted 
	 
#else 
 
//SDT JTAG 
#define JTAG_NTRST_MASK		0x04 	// Pin4 
#define JTAG_TMS_MASK		0x02	// Pin3 
#define JTAG_TCK_MASK		0x01	// Pin2 
#define JTAG_TDI_MASK		0x40	// Pin8 
#define JTAG_TDO_MASK		0x10	// Pin13 
 
#endif 
 
extern int jtag_init(void); 
extern int jtag_rd_rdo(void); 
extern void jtag_wri_tck(void); 
extern void jtag_wri_tms(u8 new_val); 
extern void jtag_wri_tdi(u8 new_val); 
extern void jtag_wri_ntrst(u8 new_val); 
 
 
 
#endif 
/* end of jtag.h */