[usb-driver] / jtagkey.c

#include <stdio.h>
#include <ftdi.h>
#include <unistd.h>
#include "usb-driver.h"
#include "config.h"
#include "jtagkey.h"

#define USBBUFSIZE 4096
#define SLOW_AND_SAFE 1

static struct ftdi_context ftdic;
static unsigned int usb_maxlen = 0;
static unsigned char bitbang_mode;

static int jtagkey_init(unsigned short vid, unsigned short pid) {
	int ret = 0;
	unsigned char c;

	if ((ret = ftdi_init(&ftdic)) != 0) {
		fprintf(stderr, "unable to initialise libftdi: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
		return ret;
	}
	
	if ((ret = ftdi_usb_open(&ftdic, vid, pid)) != 0) {
		fprintf(stderr, "unable to open ftdi device: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
		return ret;
	}

	if ((ret = ftdi_usb_reset(&ftdic)) != 0) {
		fprintf(stderr, "unable reset device: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
		return ret;
	}

	if ((ret = ftdi_set_interface(&ftdic, INTERFACE_A)) != 0) {
		fprintf(stderr, "unable to set interface: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
		return ret;
	}


#ifdef SLOW_AND_SAFE
	usb_maxlen = 384;
#else
	if ((ret = ftdi_write_data_get_chunksize(&ftdic, &usb_maxlen))  != 0) {
		fprintf(stderr, "unable to get write chunksize: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
		return ret;
	}
#endif

	if ((ret = ftdi_set_latency_timer(&ftdic, 1))  != 0) {
		fprintf(stderr, "unable to set latency timer: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
		return ret;
	}

	if ((ret = ftdi_set_baudrate(&ftdic, 500000))  != 0) {
		fprintf(stderr, "unable to set baudrate: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
		return ret;
	}

	c = 0x00;
	ftdi_write_data(&ftdic, &c, 1);

	if ((ret = ftdi_set_bitmode(&ftdic, JTAGKEY_TCK|JTAGKEY_TDI|JTAGKEY_TMS|JTAGKEY_OEn, BITMODE_SYNCBB))  != 0) {
		fprintf(stderr, "unable to enable bitbang mode: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
		return ret;
	}

	bitbang_mode = BITMODE_SYNCBB;

	if ((ret = ftdi_usb_purge_buffers(&ftdic))  != 0) {
		fprintf(stderr, "unable to purge buffers: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
		return ret;
	}

	return ret;
}

int jtagkey_open(int num) {
	int ret;

	ret = jtagkey_init(config_usb_vid(num), config_usb_pid(num));

	if (ret >= 0)
		ret = 0xff;

	return ret;
}

void jtagkey_close(int handle) {
	if (handle == 0xff) {
		ftdi_disable_bitbang(&ftdic);
		ftdi_usb_close(&ftdic);
		ftdi_deinit(&ftdic);
	}
}

static int jtagkey_set_bbmode(unsigned char mode) {
	int ret = 0;

	if (bitbang_mode != mode) {
		DPRINTF("switching bitbang-mode!\n");

		/* Wait for the latency-timer to kick in */
		usleep(2);
		if ((ret = ftdi_set_bitmode(&ftdic, JTAGKEY_TCK|JTAGKEY_TDI|JTAGKEY_TMS|JTAGKEY_OEn, mode))  != 0) {
			fprintf(stderr, "unable to enable bitbang mode: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
			return ret;
		}
		if ((ret = ftdi_usb_purge_buffers(&ftdic))  != 0) {
			fprintf(stderr, "unable to purge buffers: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
			return ret;
		}
		/* Wait for the FTDI2232 to settle */
		usleep(2);

		bitbang_mode = mode;
	}

	return ret;
}

void jtagkey_state(unsigned char data) {
	fprintf(stderr,"Pins high: ");

	if (data & JTAGKEY_TCK)
		fprintf(stderr,"TCK ");

	if (data & JTAGKEY_TDI)
		fprintf(stderr,"TDI ");

	if (data & JTAGKEY_TDO)
		fprintf(stderr,"TDO ");

	if (data & JTAGKEY_TMS)
		fprintf(stderr,"TMS ");

	if (data & JTAGKEY_VREF)
		fprintf(stderr,"VREF ");
	
	fprintf(stderr,"\n");
}

int jtagkey_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, int ecpbase, int num) {
	int ret = 0;
	int i;
	int nread = 0;
	unsigned long port;
	unsigned char val;
	static unsigned char last_data = 0;
	static unsigned char last_write = 0x00;
	static unsigned char writebuf[USBBUFSIZE], *writepos = writebuf;
	static unsigned char readbuf[USBBUFSIZE], *readpos;
	unsigned char data, prev_data;

	/* Count reads */
	for (i = 0; i < num; i++)
		if (tr[i].cmdTrans == PP_READ)
			nread++;

	/* Write combining */
	if ((writepos-writebuf > sizeof(writebuf)-num) || (nread && writepos-writebuf)) {
		unsigned char *pos = writebuf;
		int len;
		DPRINTF("writing %d bytes due to %d following reads in %d chunks or full buffer\n", writepos-writebuf, nread, num);

#ifndef SLOW_AND_SAFE
		jtagkey_set_bbmode(BITMODE_BITBANG);
#endif
		while (pos < writepos) {
			len = writepos-pos;

			if (len > usb_maxlen)
				len = usb_maxlen;

			DPRINTF("combined write of %d/%d\n",len,writepos-pos);
			ftdi_write_data(&ftdic, pos, len);
#ifdef SLOW_AND_SAFE
			i = 0;
			while (i < len) {
				i += ftdi_read_data(&ftdic, readbuf, sizeof(readbuf));
			}
#endif
			pos += len;
		}

		writepos = writebuf;
	}

	for (i = 0; i < num; i++) {
		DPRINTF("dwPort: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n",
				(unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes,
				tr[i].fAutoinc, tr[i].dwOptions);

		port = (unsigned long)tr[i].dwPort;
		val = tr[i].Data.Byte;

#ifdef DEBUG
		if (tr[i].cmdTrans == 13)
			DPRINTF("write byte: %d\n", val);
#endif

		/* Pad writebuf for read-commands in stream */
		*writepos = last_data;
		prev_data = last_data;

		if (port == ppbase + PP_DATA) {
			DPRINTF("data port\n");

			data = 0x00;
			switch(tr[i].cmdTrans) {
				case PP_READ:
					ret = 0; /* We don't support reading of the data port */
					break;

				case PP_WRITE:
					if (val & PP_TDI) {
						data |= JTAGKEY_TDI;
						DPRINTF("TDI\n");
					} else {
						DPRINTF("!TDI\n");
					}
					if (val & PP_TCK) {
						data |= JTAGKEY_TCK;
						DPRINTF("TCK\n");
					} else {
						DPRINTF("!TCK\n");
					}
					if (val & PP_TMS) {
						data |= JTAGKEY_TMS;
						DPRINTF("TMS\n");
					} else {
						DPRINTF("!TMS\n");
					}
					if (val & PP_CTRL) {
						data = JTAGKEY_OEn;
						DPRINTF("CTRL\n");
					} else {
						DPRINTF("!CTRL\n");
					}

					if (val & PP_PROG) {
						DPRINTF("PROG\n");
					} else {
						DPRINTF("!PROG\n");
					}

					*writepos = data;

					last_data = data;
					last_write = val;
					break;

				default:
					fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
					ret = -1;
					break;
			}
		}

		if (nread || (*writepos != prev_data))
			writepos++;
	}

	if (nread)
	{
		DPRINTF("writing %d bytes\n", writepos-writebuf);

		*writepos = last_data;
		writepos++;

		jtagkey_set_bbmode(BITMODE_SYNCBB);
		ftdi_write_data(&ftdic, writebuf, writepos-writebuf);

		i = 0;
		while (i < writepos-writebuf) {
			i += ftdi_read_data(&ftdic, readbuf, sizeof(readbuf));
		}

#ifdef DEBUG
		DPRINTF("write: ");
		hexdump(writebuf, writepos-writebuf);
		DPRINTF("read: ");
		hexdump(readbuf, i);
#endif

		writepos = writebuf;
	} else {
		return ret;
	}

	readpos = readbuf;

	for (i = 0; i < num; i++) {
		DPRINTF("dwPort: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n",
				(unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes,
				tr[i].fAutoinc, tr[i].dwOptions);

		port = (unsigned long)tr[i].dwPort;
		val = tr[i].Data.Byte;
		readpos++;

		if (port == ppbase + PP_DATA) {
			if (tr[i].cmdTrans == PP_WRITE) {
				last_write = val;
			}
		} else if (port == ppbase + PP_STATUS) {
			DPRINTF("status port (last write: 0x%x)\n", last_write);
			switch(tr[i].cmdTrans) {
				case PP_READ:
					data = *readpos;

#ifdef DEBUG
					DPRINTF("READ: 0x%x\n", data);
					jtagkey_state(data);
#endif

					val = 0x00;
					if ((data & JTAGKEY_TDO) && (last_write & PP_PROG))
						val |= PP_TDO;

					if (!(last_write & PP_PROG))
						val |= 0x08;

					if (last_write & 0x40)
						val |= 0x20;
					else
						val |= 0x80;
					break;

				case PP_WRITE:
					ret = 0; /* Status Port is readonly */
					break;

				default:
					fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
					ret = -1;
					break;
			}
		} else {
			ret = 0;
		}

		tr[i].Data.Byte = val;

		DPRINTF("dwPortReturn: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n",
				(unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes,
				tr[i].fAutoinc, tr[i].dwOptions);
#ifdef DEBUG
		if (tr[i].cmdTrans == 10)
			DPRINTF("read byte: %d\n", tr[i].Data.Byte);
#endif
	}

	return ret;
}
Commit	Line	Data
8121bc50	1	#include <stdio.h>
8121bc50	2	#include <ftdi.h>
9640dec9	3	#include <unistd.h>
8121bc50	4	#include "usb-driver.h"
5e3d963b	5	#include "config.h"
8121bc50	6	#include "jtagkey.h"
8121bc50	7
4af4753d	8	#define USBBUFSIZE 4096
75417531	9	#define SLOW_AND_SAFE 1
d0e2002d	10
8121bc50	11	static struct ftdi_context ftdic;
4af4753d	12	static unsigned int usb_maxlen = 0;
9640dec9	13	static unsigned char bitbang_mode;
8121bc50	14
5e3d963b	15	static int jtagkey_init(unsigned short vid, unsigned short pid) {
8121bc50	16	int ret = 0;
d0e2002d	17	unsigned char c;
8121bc50	18
	19	if ((ret = ftdi_init(&ftdic)) != 0) {
	20	fprintf(stderr, "unable to initialise libftdi: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	21	return ret;
	22	}
	23
	24	if ((ret = ftdi_usb_open(&ftdic, vid, pid)) != 0) {
	25	fprintf(stderr, "unable to open ftdi device: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	26	return ret;
	27	}
	28
	29	if ((ret = ftdi_usb_reset(&ftdic)) != 0) {
	30	fprintf(stderr, "unable reset device: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	31	return ret;
	32	}
	33
	34	if ((ret = ftdi_set_interface(&ftdic, INTERFACE_A)) != 0) {
	35	fprintf(stderr, "unable to set interface: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	36	return ret;
	37	}
	38
4af4753d	39
75417531	40	#ifdef SLOW_AND_SAFE
	41	usb_maxlen = 384;
	42	#else
4af4753d	43	if ((ret = ftdi_write_data_get_chunksize(&ftdic, &usb_maxlen)) != 0) {
4af4753d	44	fprintf(stderr, "unable to get write chunksize: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
8121bc50	45	return ret;
8121bc50	46	}
75417531	47	#endif
8121bc50	48
	49	if ((ret = ftdi_set_latency_timer(&ftdic, 1)) != 0) {
	50	fprintf(stderr, "unable to set latency timer: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	51	return ret;
	52	}
	53
d0e2002d	54	if ((ret = ftdi_set_baudrate(&ftdic, 500000)) != 0) {
8121bc50	55	fprintf(stderr, "unable to set baudrate: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	56	return ret;
	57	}
	58
d0e2002d	59	c = 0x00;
	60	ftdi_write_data(&ftdic, &c, 1);
	61
75417531	62	if ((ret = ftdi_set_bitmode(&ftdic, JTAGKEY_TCK\|JTAGKEY_TDI\|JTAGKEY_TMS\|JTAGKEY_OEn, BITMODE_SYNCBB)) != 0) {
8121bc50	63	fprintf(stderr, "unable to enable bitbang mode: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	64	return ret;
	65	}
	66
75417531	67	bitbang_mode = BITMODE_SYNCBB;
9640dec9	68
8121bc50	69	if ((ret = ftdi_usb_purge_buffers(&ftdic)) != 0) {
	70	fprintf(stderr, "unable to purge buffers: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	71	return ret;
	72	}
	73
	74	return ret;
	75	}
	76
5e3d963b	77	int jtagkey_open(int num) {
	78	int ret;
	79
	80	ret = jtagkey_init(config_usb_vid(num), config_usb_pid(num));
	81
	82	if (ret >= 0)
	83	ret = 0xff;
	84
	85	return ret;
	86	}
	87
	88	void jtagkey_close(int handle) {
	89	if (handle == 0xff) {
	90	ftdi_disable_bitbang(&ftdic);
	91	ftdi_usb_close(&ftdic);
	92	ftdi_deinit(&ftdic);
	93	}
8121bc50	94	}
8121bc50	95
9640dec9	96	static int jtagkey_set_bbmode(unsigned char mode) {
	97	int ret = 0;
	98
	99	if (bitbang_mode != mode) {
	100	DPRINTF("switching bitbang-mode!\n");
59b06a85	101
9640dec9	102	/* Wait for the latency-timer to kick in */
	103	usleep(2);
	104	if ((ret = ftdi_set_bitmode(&ftdic, JTAGKEY_TCK\|JTAGKEY_TDI\|JTAGKEY_TMS\|JTAGKEY_OEn, mode)) != 0) {
	105	fprintf(stderr, "unable to enable bitbang mode: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	106	return ret;
	107	}
	108	if ((ret = ftdi_usb_purge_buffers(&ftdic)) != 0) {
	109	fprintf(stderr, "unable to purge buffers: %d (%s)\n", ret, ftdi_get_error_string(&ftdic));
	110	return ret;
	111	}
	112	/* Wait for the FTDI2232 to settle */
	113	usleep(2);
	114
	115	bitbang_mode = mode;
	116	}
	117
	118	return ret;
	119	}
	120
8121bc50	121	void jtagkey_state(unsigned char data) {
	122	fprintf(stderr,"Pins high: ");
	123
	124	if (data & JTAGKEY_TCK)
	125	fprintf(stderr,"TCK ");
	126
	127	if (data & JTAGKEY_TDI)
	128	fprintf(stderr,"TDI ");
	129
	130	if (data & JTAGKEY_TDO)
	131	fprintf(stderr,"TDO ");
	132
	133	if (data & JTAGKEY_TMS)
	134	fprintf(stderr,"TMS ");
	135
	136	if (data & JTAGKEY_VREF)
	137	fprintf(stderr,"VREF ");
	138
	139	fprintf(stderr,"\n");
	140	}
	141
	142	int jtagkey_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase, int ecpbase, int num) {
	143	int ret = 0;
	144	int i;
d0e2002d	145	int nread = 0;
8121bc50	146	unsigned long port;
8121bc50	147	unsigned char val;
d0e2002d	148	static unsigned char last_data = 0;
e81047b8	149	static unsigned char last_write = 0x00;
d0e2002d	150	static unsigned char writebuf[USBBUFSIZE], *writepos = writebuf;
d0e2002d	151	static unsigned char readbuf[USBBUFSIZE], *readpos;
e81047b8	152	unsigned char data, prev_data;
d0e2002d	153
e81047b8	154	/* Count reads */
d0e2002d	155	for (i = 0; i < num; i++)
e81047b8	156	if (tr[i].cmdTrans == PP_READ)
d0e2002d	157	nread++;
	158
	159	/* Write combining */
	160	if ((writepos-writebuf > sizeof(writebuf)-num) \|\| (nread && writepos-writebuf)) {
4af4753d	161	unsigned char *pos = writebuf;
4af4753d	162	int len;
d0e2002d	163	DPRINTF("writing %d bytes due to %d following reads in %d chunks or full buffer\n", writepos-writebuf, nread, num);
d0e2002d	164
75417531	165	#ifndef SLOW_AND_SAFE
9640dec9	166	jtagkey_set_bbmode(BITMODE_BITBANG);
75417531	167	#endif
4af4753d	168	while (pos < writepos) {
85690a3f	169	len = writepos-pos;
85690a3f	170
4af4753d	171	if (len > usb_maxlen)
4af4753d	172	len = usb_maxlen;
d0e2002d	173
4af4753d	174	DPRINTF("combined write of %d/%d\n",len,writepos-pos);
4af4753d	175	ftdi_write_data(&ftdic, pos, len);
75417531	176	#ifdef SLOW_AND_SAFE
	177	i = 0;
	178	while (i < len) {
	179	i += ftdi_read_data(&ftdic, readbuf, sizeof(readbuf));
	180	}
	181	#endif
4af4753d	182	pos += len;
e81047b8	183	}
4af4753d	184
d0e2002d	185	writepos = writebuf;
d0e2002d	186	}
8121bc50	187
	188	for (i = 0; i < num; i++) {
	189	DPRINTF("dwPort: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n",
	190	(unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes,
	191	tr[i].fAutoinc, tr[i].dwOptions);
	192
	193	port = (unsigned long)tr[i].dwPort;
	194	val = tr[i].Data.Byte;
	195
	196	#ifdef DEBUG
	197	if (tr[i].cmdTrans == 13)
	198	DPRINTF("write byte: %d\n", val);
	199	#endif
	200
b122ac4b	201	/* Pad writebuf for read-commands in stream */
d0e2002d	202	*writepos = last_data;
e81047b8	203	prev_data = last_data;
b122ac4b	204
8121bc50	205	if (port == ppbase + PP_DATA) {
	206	DPRINTF("data port\n");
	207
	208	data = 0x00;
	209	switch(tr[i].cmdTrans) {
	210	case PP_READ:
	211	ret = 0; /* We don't support reading of the data port */
	212	break;
	213
	214	case PP_WRITE:
	215	if (val & PP_TDI) {
	216	data \|= JTAGKEY_TDI;
	217	DPRINTF("TDI\n");
	218	} else {
	219	DPRINTF("!TDI\n");
	220	}
	221	if (val & PP_TCK) {
	222	data \|= JTAGKEY_TCK;
	223	DPRINTF("TCK\n");
	224	} else {
	225	DPRINTF("!TCK\n");
	226	}
	227	if (val & PP_TMS) {
	228	data \|= JTAGKEY_TMS;
	229	DPRINTF("TMS\n");
	230	} else {
	231	DPRINTF("!TMS\n");
	232	}
	233	if (val & PP_CTRL) {
d0e2002d	234	data = JTAGKEY_OEn;
8121bc50	235	DPRINTF("CTRL\n");
	236	} else {
	237	DPRINTF("!CTRL\n");
	238	}
8121bc50	239
d0e2002d	240	if (val & PP_PROG) {
	241	DPRINTF("PROG\n");
	242	} else {
	243	DPRINTF("!PROG\n");
	244	}
	245
	246	*writepos = data;
	247
b122ac4b	248	last_data = data;
d0e2002d	249	last_write = val;
8121bc50	250	break;
	251
	252	default:
	253	fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
	254	ret = -1;
	255	break;
	256	}
b122ac4b	257	}
e81047b8	258
	259	if (nread \|\| (*writepos != prev_data))
	260	writepos++;
b122ac4b	261	}
b122ac4b	262
d0e2002d	263	if (nread)
	264	{
	265	DPRINTF("writing %d bytes\n", writepos-writebuf);
59b06a85	266
	267	*writepos = last_data;
	268	writepos++;
	269
9640dec9	270	jtagkey_set_bbmode(BITMODE_SYNCBB);
9640dec9	271	ftdi_write_data(&ftdic, writebuf, writepos-writebuf);
3f5287b7	272
9640dec9	273	i = 0;
	274	while (i < writepos-writebuf) {
	275	i += ftdi_read_data(&ftdic, readbuf, sizeof(readbuf));
d0e2002d	276	}
b122ac4b	277
b122ac4b	278	#ifdef DEBUG
d0e2002d	279	DPRINTF("write: ");
	280	hexdump(writebuf, writepos-writebuf);
	281	DPRINTF("read: ");
	282	hexdump(readbuf, i);
b122ac4b	283	#endif
b122ac4b	284
d0e2002d	285	writepos = writebuf;
	286	} else {
	287	return ret;
	288	}
	289
	290	readpos = readbuf;
b122ac4b	291
	292	for (i = 0; i < num; i++) {
	293	DPRINTF("dwPort: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n",
	294	(unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes,
	295	tr[i].fAutoinc, tr[i].dwOptions);
	296
	297	port = (unsigned long)tr[i].dwPort;
	298	val = tr[i].Data.Byte;
d0e2002d	299	readpos++;
b122ac4b	300
d0e2002d	301	if (port == ppbase + PP_DATA) {
	302	if (tr[i].cmdTrans == PP_WRITE) {
	303	last_write = val;
	304	}
	305	} else if (port == ppbase + PP_STATUS) {
	306	DPRINTF("status port (last write: 0x%x)\n", last_write);
8121bc50	307	switch(tr[i].cmdTrans) {
8121bc50	308	case PP_READ:
d0e2002d	309	data = *readpos;
59b06a85	310
8121bc50	311	#ifdef DEBUG
	312	DPRINTF("READ: 0x%x\n", data);
	313	jtagkey_state(data);
	314	#endif
	315
	316	val = 0x00;
d0e2002d	317	if ((data & JTAGKEY_TDO) && (last_write & PP_PROG))
8121bc50	318	val \|= PP_TDO;
8121bc50	319
d0e2002d	320	if (!(last_write & PP_PROG))
	321	val \|= 0x08;
	322
8121bc50	323	if (last_write & 0x40)
	324	val \|= 0x20;
	325	else
	326	val \|= 0x80;
	327	break;
	328
	329	case PP_WRITE:
	330	ret = 0; /* Status Port is readonly */
	331	break;
	332
	333	default:
	334	fprintf(stderr,"!!!Unsupported TRANSFER command: %lu!!!\n", tr[i].cmdTrans);
	335	ret = -1;
	336	break;
	337	}
8121bc50	338	} else {
8121bc50	339	ret = 0;
	340	}
	341
	342	tr[i].Data.Byte = val;
	343
	344	DPRINTF("dwPortReturn: 0x%lx, cmdTrans: %lu, dwbytes: %ld, fautoinc: %ld, dwoptions: %ld\n",
	345	(unsigned long)tr[i].dwPort, tr[i].cmdTrans, tr[i].dwBytes,
	346	tr[i].fAutoinc, tr[i].dwOptions);
	347	#ifdef DEBUG
	348	if (tr[i].cmdTrans == 10)
	349	DPRINTF("read byte: %d\n", tr[i].Data.Byte);
	350	#endif
	351	}
	352
	353	return ret;
	354	}