1 /* $NetBSD: ppbus_1284.h,v 1.8 2009/04/05 09:56:16 cegger 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 #include <sys/device.h> /* for device_t */ 35 36 /* 37 * IEEE1284 signals 38 */ 39 40 /* host driven signals */ 41 42 #define nHostClk STROBE 43 #define Write STROBE 44 45 #define nHostBusy AUTOFEED 46 #define nHostAck AUTOFEED 47 #define DStrb AUTOFEED 48 49 #define nReveseRequest nINIT 50 51 #define nActive1284 SELECTIN 52 #define AStrb SELECTIN 53 54 /* peripheral driven signals */ 55 56 #define nDataAvail nFAULT 57 #define nPeriphRequest nFAULT 58 59 #define Xflag SELECT 60 61 #define AckDataReq PERROR 62 #define nAckReverse PERROR 63 64 #define nPtrBusy nBUSY 65 #define nPeriphAck nBUSY 66 #define Wait nBUSY 67 68 #define PtrClk nACK 69 #define PeriphClk nACK 70 #define Intr nACK 71 72 /* request mode values */ 73 #define NIBBLE_1284_NORMAL 0x0 74 #define NIBBLE_1284_REQUEST_ID 0x4 75 #define BYTE_1284_NORMAL 0x1 76 #define BYTE_1284_REQUEST_ID 0x5 77 #define ECP_1284_NORMAL 0x10 78 #define ECP_1284_REQUEST_ID 0x14 79 #define ECP_1284_RLE 0x30 80 #define ECP_1284_RLE_REQUEST_ID 0x34 81 #define EPP_1284_NORMAL 0x40 82 #define EXT_LINK_1284_NORMAL 0x80 83 84 /* ieee1284 mode options */ 85 #define PPBUS_REQUEST_ID 0x1 86 #define PPBUS_USE_RLE 0x2 87 #define PPBUS_EXTENSIBILITY_LINK 0x4 88 89 /* ieee1284 errors */ 90 #define PPBUS_NO_ERROR 0 91 #define PPBUS_MODE_UNSUPPORTED 1 /* mode not supported by peripheral */ 92 #define PPBUS_NOT_IEEE1284 2 /* not an IEEE1284 compliant periph. */ 93 #define PPBUS_TIMEOUT 3 /* timeout */ 94 #define PPBUS_INVALID_MODE 4 /* current mode is incorrect */ 95 96 /* ieee1284 host side states */ 97 #define PPBUS_ERROR 0 98 #define PPBUS_FORWARD_IDLE 1 99 #define PPBUS_NEGOTIATION 2 100 #define PPBUS_SETUP 3 101 #define PPBUS_ECP_FORWARD_IDLE 4 102 #define PPBUS_FWD_TO_REVERSE 5 103 #define PPBUS_REVERSE_IDLE 6 104 #define PPBUS_REVERSE_TRANSFER 7 105 #define PPBUS_REVERSE_TO_FWD 8 106 #define PPBUS_EPP_IDLE 9 107 #define PPBUS_TERMINATION 10 108 109 /* peripheral side states */ 110 #define PPBUS_PERIPHERAL_NEGOTIATION 11 111 #define PPBUS_PERIPHERAL_IDLE 12 112 #define PPBUS_PERIPHERAL_TRANSFER 13 113 #define PPBUS_PERIPHERAL_TERMINATION 14 114 115 /* Function prototypes */ 116 117 /* Host functions */ 118 int ppbus_1284_negotiate(device_t, int, int); 119 int ppbus_1284_terminate(device_t); 120 int ppbus_1284_read_id(device_t, int, char **, size_t *, size_t *); 121 int ppbus_1284_get_state(device_t); 122 int ppbus_1284_set_state(device_t, int state); 123 124 /* Peripheral functions */ 125 int ppbus_peripheral_terminate(device_t, int); 126 int ppbus_peripheral_negotiate(device_t, int, int); 127 int byte_peripheral_write(device_t, char *, int, int *); 128 129 #endif /* __PPBUS_1284_H */ 130