1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1997 Nicolas Souchu
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 *
30 */
31#ifndef __1284_H
32#define __1284_H
33
34/*
35 * IEEE1284 signals
36 */
37
38/* host driven signals */
39
40#define nHostClk	STROBE
41#define Write		STROBE
42
43#define nHostBusy	AUTOFEED
44#define nHostAck	AUTOFEED
45#define DStrb		AUTOFEED
46
47#define nReveseRequest	nINIT
48
49#define nActive1284	SELECTIN
50#define AStrb		SELECTIN
51
52/* peripheral driven signals */
53
54#define nDataAvail	nFAULT
55#define nPeriphRequest	nFAULT
56
57#define Xflag		SELECT
58
59#define AckDataReq	PERROR
60#define nAckReverse	PERROR
61
62#define nPtrBusy	nBUSY
63#define nPeriphAck	nBUSY
64#define Wait		nBUSY
65
66#define PtrClk		nACK
67#define PeriphClk	nACK
68#define Intr		nACK
69
70/* request mode values */
71#define NIBBLE_1284_NORMAL	0x0
72#define NIBBLE_1284_REQUEST_ID	0x4
73#define BYTE_1284_NORMAL	0x1
74#define BYTE_1284_REQUEST_ID	0x5
75#define ECP_1284_NORMAL		0x10
76#define ECP_1284_REQUEST_ID	0x14
77#define ECP_1284_RLE		0x30
78#define ECP_1284_RLE_REQUEST_ID	0x34
79#define EPP_1284_NORMAL		0x40
80#define EXT_LINK_1284_NORMAL	0x80
81
82/* ieee1284 mode options */
83#define PPB_REQUEST_ID		0x1
84#define PPB_USE_RLE		0x2
85#define PPB_EXTENSIBILITY_LINK	0x4
86
87/* ieee1284 errors */
88#define PPB_NO_ERROR		0
89#define PPB_MODE_UNSUPPORTED	1	/* mode not supported by peripheral */
90#define PPB_NOT_IEEE1284	2	/* not an IEEE1284 compliant periph. */
91#define PPB_TIMEOUT		3	/* timeout */
92#define PPB_INVALID_MODE	4	/* current mode is incorrect */
93
94/* ieee1284 host side states */
95#define PPB_ERROR			0
96#define PPB_FORWARD_IDLE		1
97#define PPB_NEGOCIATION			2
98#define PPB_SETUP			3
99#define PPB_ECP_FORWARD_IDLE		4
100#define PPB_FWD_TO_REVERSE		5
101#define PPB_REVERSE_IDLE		6
102#define PPB_REVERSE_TRANSFER		7
103#define PPB_REVERSE_TO_FWD		8
104#define PPB_EPP_IDLE			9
105#define PPB_TERMINATION			10
106
107/* peripheral side states */
108#define PPB_PERIPHERAL_NEGOCIATION	11
109#define PPB_PERIPHERAL_IDLE		12
110#define PPB_PERIPHERAL_TRANSFER		13
111#define PPB_PERIPHERAL_TERMINATION	14
112
113extern int nibble_1284_inbyte(device_t, char *);
114extern int byte_1284_inbyte(device_t, char *);
115extern int spp_1284_read(device_t, int, char *, int, int *);
116
117extern int ppb_1284_negociate(device_t, int, int);
118extern int ppb_1284_terminate(device_t);
119extern int ppb_1284_read_id(device_t, int, char *, int, int *);
120extern int ppb_1284_read(device_t, int, char *, int, int *);
121extern int ppb_1284_get_state(device_t bus);
122extern int ppb_1284_set_state(device_t bus, int state);
123
124extern int ppb_peripheral_terminate(device_t, int);
125extern int ppb_peripheral_negociate(device_t, int, int);
126extern int byte_peripheral_write(device_t, char *, int, int *);
127
128#endif
129