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 * $FreeBSD$
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	0x0
70#define NIBBLE_1284_REQUEST_ID	0x4
71#define BYTE_1284_NORMAL	0x1
72#define BYTE_1284_REQUEST_ID	0x5
73#define ECP_1284_NORMAL		0x10
74#define ECP_1284_REQUEST_ID	0x14
75#define ECP_1284_RLE		0x30
76#define ECP_1284_RLE_REQUEST_ID	0x34
77#define EPP_1284_NORMAL		0x40
78#define EXT_LINK_1284_NORMAL	0x80
79
80/* ieee1284 mode options */
81#define PPB_REQUEST_ID		0x1
82#define PPB_USE_RLE		0x2
83#define PPB_EXTENSIBILITY_LINK	0x4
84
85/* ieee1284 errors */
86#define PPB_NO_ERROR		0
87#define PPB_MODE_UNSUPPORTED	1	/* mode not supported by peripheral */
88#define PPB_NOT_IEEE1284	2	/* not an IEEE1284 compliant periph. */
89#define PPB_TIMEOUT		3	/* timeout */
90#define PPB_INVALID_MODE	4	/* current mode is incorrect */
91
92/* ieee1284 host side states */
93#define PPB_ERROR			0
94#define PPB_FORWARD_IDLE		1
95#define PPB_NEGOCIATION			2
96#define PPB_SETUP			3
97#define PPB_ECP_FORWARD_IDLE		4
98#define PPB_FWD_TO_REVERSE		5
99#define PPB_REVERSE_IDLE		6
100#define PPB_REVERSE_TRANSFER		7
101#define PPB_REVERSE_TO_FWD		8
102#define PPB_EPP_IDLE			9
103#define PPB_TERMINATION			10
104
105/* peripheral side states */
106#define PPB_PERIPHERAL_NEGOCIATION	11
107#define PPB_PERIPHERAL_IDLE		12
108#define PPB_PERIPHERAL_TRANSFER		13
109#define PPB_PERIPHERAL_TERMINATION	14
110
111extern int nibble_1284_inbyte(device_t, char *);
112extern int byte_1284_inbyte(device_t, char *);
113extern int spp_1284_read(device_t, int, char *, int, int *);
114
115extern int ppb_1284_negociate(device_t, int, int);
116extern int ppb_1284_terminate(device_t);
117extern int ppb_1284_read_id(device_t, int, char *, int, int *);
118extern int ppb_1284_read(device_t, int, char *, int, int *);
119extern int ppb_1284_get_state(device_t bus);
120extern int ppb_1284_set_state(device_t bus, int state);
121
122extern int ppb_peripheral_terminate(device_t, int);
123extern int ppb_peripheral_negociate(device_t, int, int);
124extern int byte_peripheral_write(device_t, char *, int, int *);
125
126#endif
127