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.
82 lines
3.1 KiB
C
82 lines
3.1 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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* Distantly from :
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* @(#)lptreg.h 1.1 (Berkeley) 12/19/90
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* Id: lptreg.h,v 1.6 1997/02/22 09:36:52 peter Exp
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*
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* $Id: nlpt.h,v 1.2 1997/08/16 14:05:32 msmith Exp $
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*/
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#ifndef __NLPT_H
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#define __NLPT_H
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#define LPS_NERR 0x08 /* printer no error */
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#define LPS_SEL 0x10 /* printer selected */
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#define LPS_OUT 0x20 /* printer out of paper */
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#define LPS_NACK 0x40 /* printer no ack of data */
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#define LPS_NBSY 0x80 /* printer no ack of data */
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#define LPC_STB 0x01 /* strobe data to printer */
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#define LPC_AUTOL 0x02 /* automatic linefeed */
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#define LPC_NINIT 0x04 /* initialize printer */
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#define LPC_SEL 0x08 /* printer selected */
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#define LPC_ENA 0x10 /* enable IRQ */
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struct lpt_data {
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unsigned short lpt_unit;
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struct ppb_device lpt_dev;
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short sc_state;
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/* default case: negative prime, negative ack, handshake strobe,
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prime once */
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u_char sc_control;
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char sc_flags;
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#define LP_POS_INIT 0x04 /* if we are a postive init signal */
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#define LP_POS_ACK 0x08 /* if we are a positive going ack */
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#define LP_NO_PRIME 0x10 /* don't prime the printer at all */
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#define LP_PRIMEOPEN 0x20 /* prime on every open */
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#define LP_AUTOLF 0x40 /* tell printer to do an automatic lf */
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#define LP_BYPASS 0x80 /* bypass printer ready checks */
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struct buf *sc_inbuf;
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struct buf *sc_statbuf;
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short sc_xfercnt ;
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char sc_primed;
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char *sc_cp ;
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u_short sc_irq ; /* IRQ status of port */
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#define LP_HAS_IRQ 0x01 /* we have an irq available */
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#define LP_USE_IRQ 0x02 /* we are using our irq */
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#define LP_ENABLE_IRQ 0x04 /* enable IRQ on open */
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#define LP_ENABLE_EXT 0x10 /* we shall use advanced mode when possible */
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u_char sc_backoff ; /* time to call lptout() again */
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#ifdef DEVFS
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void *devfs_token;
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void *devfs_token_ctl;
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#endif
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};
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#endif
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