ppb_1284.h revision 39134 
1/*-
2 * Copyright (c) 1997 Nicolas Souchu
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id: ppb_1284.h,v 1.2 1998/08/03 19:14:31 msmith Exp $
27 *
28 */
29#ifndef __1284_H
30#define __1284_H
31
32/*
33 * IEEE1284 signals
34 */
35
36/* host driven signals */
37
38#define nHostClk	STROBE
39#define Write		STROBE
40
41#define nHostBusy	AUTOFEED
42#define nHostAck	AUTOFEED
43#define DStrb		AUTOFEED
44
45#define nReveseRequest	nINIT
46
47#define nActive1284	SELECTIN
48#define AStrb		SELECTIN
49
50/* peripheral driven signals */
51
52#define nDataAvail	nFAULT
53#define nPeriphRequest	nFAULT
54
55#define Xflag		SELECT
56
57#define AckDataReq	PERROR
58#define nAckReverse	PERROR
59
60#define nPtrBusy	nBUSY
61#define nPeriphAck	nBUSY
62#define Wait		nBUSY
63
64#define PtrClk		nACK
65#define PeriphClk	nACK
66#define Intr		nACK
67
68/* request mode values */
69#define NIBBLE_1284_NORMAL	0
70#define NIBBLE_1284_REQUEST_ID	4
71
72/* how to terminate */
73#define VALID_STATE	0
74#define IMMEDIATE	1
75
76extern int do_1284_wait(struct ppb_device *, char, char);
77
78extern int nibble_1284_inbyte(struct ppb_device *, char *);
79extern void nibble_1284_sync(struct ppb_device *);
80extern int nibble_1284_mode(struct ppb_device *, int);
81
82extern int ppb_1284_negociate(struct ppb_device *, int);
83extern int ppb_1284_terminate(struct ppb_device *, int how);
84
85#endif
86