1 /* $NetBSD: ppbus_1284.h,v 1.5 2004/01/28 17:11:48 jdolecek Exp $ */
2
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: src/sys/dev/ppbus/ppb_1284.h,v 1.7 2000/01/14 08:03:14 nsouch Exp
29 *
30 */
31 #ifndef __PPBUS_1284_H
32 #define __PPBUS_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 PPBUS_REQUEST_ID 0x1
84 #define PPBUS_USE_RLE 0x2
85 #define PPBUS_EXTENSIBILITY_LINK 0x4
86
87 /* ieee1284 errors */
88 #define PPBUS_NO_ERROR 0
89 #define PPBUS_MODE_UNSUPPORTED 1 /* mode not supported by peripheral */
90 #define PPBUS_NOT_IEEE1284 2 /* not an IEEE1284 compliant periph. */
91 #define PPBUS_TIMEOUT 3 /* timeout */
92 #define PPBUS_INVALID_MODE 4 /* current mode is incorrect */
93
94 /* ieee1284 host side states */
95 #define PPBUS_ERROR 0
96 #define PPBUS_FORWARD_IDLE 1
97 #define PPBUS_NEGOTIATION 2
98 #define PPBUS_SETUP 3
99 #define PPBUS_ECP_FORWARD_IDLE 4
100 #define PPBUS_FWD_TO_REVERSE 5
101 #define PPBUS_REVERSE_IDLE 6
102 #define PPBUS_REVERSE_TRANSFER 7
103 #define PPBUS_REVERSE_TO_FWD 8
104 #define PPBUS_EPP_IDLE 9
105 #define PPBUS_TERMINATION 10
106
107 /* peripheral side states */
108 #define PPBUS_PERIPHERAL_NEGOTIATION 11
109 #define PPBUS_PERIPHERAL_IDLE 12
110 #define PPBUS_PERIPHERAL_TRANSFER 13
111 #define PPBUS_PERIPHERAL_TERMINATION 14
112
113 /* Function prototypes */
114
115 /* Host functions */
116 int ppbus_1284_negotiate(struct device *, int, int);
117 int ppbus_1284_terminate(struct device *);
118 int ppbus_1284_read_id(struct device *, int, char **, size_t *, size_t *);
119 int ppbus_1284_get_state(struct device *);
120 int ppbus_1284_set_state(struct device *, int state);
121
122 /* Peripheral functions */
123 int ppbus_peripheral_terminate(struct device *, int);
124 int ppbus_peripheral_negotiate(struct device *, int, int);
125 int byte_peripheral_write(struct device *, char *, int, int *);
126
127 #endif /* __PPBUS_1284_H */
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