bc35c17446
+ ECP parallel port chipset FIFO detection + DMA+FIFO parallel I/O handled as chipset specific + nlpt updated in order to use the above enhanced parallel I/O. Use 'lptcontrol -e' to use enhanced I/O + Various options documented in LINT + Full IEEE1284 NIBBLE and BYTE modes support. See ppbus(4) for an overview of the IEEE1284 standard + Detection of PnP parallel devices at boot + Read capability added to nlpt driver to get IEEE1284 compliant printer status with a simple 'cat /dev/lpt0' + IEEE1284 peripheral emulation added to BYTE mode. Two computers may dialog according to IEEE1284 signaling method. See PERIPH_1284 option and /sys/dev/ppbus/ppi.c All this code is supposed to provide basic functions for IEEE1284 programming. ppi.c and nlpt.c may act as examples.
125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/*-
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* Copyright (c) 1997 Nicolas Souchu
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: ppb_1284.h,v 1.3 1998/09/13 18:26:26 nsouch Exp $
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*
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*/
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#ifndef __1284_H
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#define __1284_H
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/*
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* IEEE1284 signals
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*/
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/* host driven signals */
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#define nHostClk STROBE
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#define Write STROBE
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#define nHostBusy AUTOFEED
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#define nHostAck AUTOFEED
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#define DStrb AUTOFEED
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#define nReveseRequest nINIT
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#define nActive1284 SELECTIN
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#define AStrb SELECTIN
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/* peripheral driven signals */
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#define nDataAvail nFAULT
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#define nPeriphRequest nFAULT
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#define Xflag SELECT
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#define AckDataReq PERROR
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#define nAckReverse PERROR
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#define nPtrBusy nBUSY
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#define nPeriphAck nBUSY
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#define Wait nBUSY
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#define PtrClk nACK
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#define PeriphClk nACK
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#define Intr nACK
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/* request mode values */
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#define NIBBLE_1284_NORMAL 0x0
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#define NIBBLE_1284_REQUEST_ID 0x4
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#define BYTE_1284_NORMAL 0x1
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#define BYTE_1284_REQUEST_ID 0x5
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#define ECP_1284_NORMAL 0x10
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#define ECP_1284_REQUEST_ID 0x14
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#define ECP_1284_RLE 0x30
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#define ECP_1284_RLE_REQUEST_ID 0x34
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#define EPP_1284_NORMAL 0x40
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#define EXT_LINK_1284_NORMAL 0x80
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/* ieee1284 mode options */
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#define PPB_REQUEST_ID 0x1
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#define PPB_USE_RLE 0x2
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#define PPB_EXTENSIBILITY_LINK 0x4
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/* ieee1284 errors */
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#define PPB_NO_ERROR 0
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#define PPB_MODE_UNSUPPORTED 1 /* mode not supported by peripheral */
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#define PPB_NOT_IEEE1284 2 /* not an IEEE1284 compliant periph. */
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#define PPB_TIMEOUT 3 /* timeout */
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#define PPB_INVALID_MODE 4 /* current mode is incorrect */
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/* ieee1284 host side states */
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#define PPB_ERROR 0
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#define PPB_FORWARD_IDLE 1
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#define PPB_NEGOCIATION 2
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#define PPB_SETUP 3
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#define PPB_ECP_FORWARD_IDLE 4
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#define PPB_FWD_TO_REVERSE 5
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#define PPB_REVERSE_IDLE 6
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#define PPB_REVERSE_TRANSFER 7
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#define PPB_REVERSE_TO_FWD 8
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#define PPB_EPP_IDLE 9
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#define PPB_TERMINATION 10
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/* peripheral side states */
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#define PPB_PERIPHERAL_NEGOCIATION 11
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#define PPB_PERIPHERAL_IDLE 12
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#define PPB_PERIPHERAL_TRANSFER 13
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#define PPB_PERIPHERAL_TERMINATION 14
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extern int nibble_1284_inbyte(struct ppb_device *, char *);
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extern int byte_1284_inbyte(struct ppb_device *, char *);
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extern int spp_1284_read(struct ppb_device *, int, char *, int, int *);
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extern int ppb_1284_negociate(struct ppb_device *, int, int);
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extern int ppb_1284_terminate(struct ppb_device *);
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extern int ppb_1284_read_id(struct ppb_device *, int, char *, int, int *);
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extern int ppb_1284_read(struct ppb_device *, int, char *, int, int *);
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extern int ppb_peripheral_terminate(struct ppb_device *, int);
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extern int ppb_peripheral_negociate(struct ppb_device *, int, int);
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extern int byte_peripheral_write(struct ppb_device *, char *, int, int *);
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#endif
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