1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 */ 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 14 110 111 extern int nibble_1284_inbyte(device_t, char *); 112 extern int byte_1284_inbyte(device_t, char *); 113 extern int spp_1284_read(device_t, int, char *, int, int *); 114 115 extern int ppb_1284_negociate(device_t, int, int); 116 extern int ppb_1284_terminate(device_t); 117 extern int ppb_1284_read_id(device_t, int, char *, int, int *); 118 extern int ppb_1284_read(device_t, int, char *, int, int *); 119 extern int ppb_1284_get_state(device_t bus); 120 extern int ppb_1284_set_state(device_t bus, int state); 121 122 extern int ppb_peripheral_terminate(device_t, int); 123 extern int ppb_peripheral_negociate(device_t, int, int); 124 extern int byte_peripheral_write(device_t, char *, int, int *); 125 126 #endif 127