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
113 extern int nibble_1284_inbyte(device_t, char *);
114 extern int byte_1284_inbyte(device_t, char *);
115 extern int spp_1284_read(device_t, int, char *, int, int *);
116
117 extern int ppb_1284_negociate(device_t, int, int);
118 extern int ppb_1284_terminate(device_t);
119 extern int ppb_1284_read_id(device_t, int, char *, int, int *);
120 extern int ppb_1284_read(device_t, int, char *, int, int *);
121 extern int ppb_1284_get_state(device_t bus);
122 extern int ppb_1284_set_state(device_t bus, int state);
123
124 extern int ppb_peripheral_terminate(device_t, int);
125 extern int ppb_peripheral_negociate(device_t, int, int);
126 extern int byte_peripheral_write(device_t, char *, int, int *);
127
128 #endif
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