FreeBSD/Linux Kernel Cross Reference
sys/dev/ppbus/lptreg.h

     /* $NetBSD: lptreg.h,v 1.6 2005/12/11 12:23:28 christos Exp $ */
     
     /*-
      * Copyright (c) 1990 The Regents of the University of California.
      * All rights reserved.
      *
      * This code is derived from software contributed to Berkeley by
      * William Jolitz.
      *
     * Copyright (c) 1997, 1999 Nicolas Souchu
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * Distantly from :
     *      @(#)lptreg.h      1.1 (Berkeley) 12/19/90
     *      Id: lptreg.h,v 1.6 1997/02/22 09:36:52 peter Exp
     *      From Id: nlpt.h,v 1.3 1999/01/10 12:04:54 nsouch Exp
     *
     * FreeBSD: src/sys/dev/ppbus/lpt.h,v 1.4 1999/08/28 00:42:23 peter Exp
     */
    
    /*
     * AT Parallel Port (for lineprinter)
     * Interface port and bit definitions
     * Written by William Jolitz 12/18/90
     * Copyright (C) William Jolitz 1990
     */
    
    #ifndef __DEV_PPBUS_LPTREG_H
    #define __DEV_PPBUS_LPTREG_H
    
    /* machine independent definitions, it shall only depend on the ppbus
     * parallel port model */
    
                                            /* PIN */
    #define LPS_NERR                0x08    /* 15  printer no error */
    #define LPS_SEL                 0x10    /* 13  printer selected */
    #define LPS_OUT                 0x20    /* 12  printer out of paper */
    #define LPS_NACK                0x40    /* 10  printer no ack of data */
    #define LPS_NBSY                0x80    /* 11  printer busy */
    
    #define LPC_STB                 0x01    /*  1  strobe data to printer */
    #define LPC_AUTOL               0x02    /* 14  automatic linefeed */
    #define LPC_NINIT               0x04    /* 16  initialize printer */
    #define LPC_SEL                 0x08    /* 17  printer selected */
    #define LPC_ENA                 0x10    /*  -  enable IRQ */
    
    /* status masks to interrogate printer status */
    #define RDY_MASK        (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)     /* ready ? */
    #define LP_READY        (LPS_SEL|LPS_NBSY|LPS_NERR)
    
    /* Printer Ready condition  - from lpa.c */
    /* Only used in polling code */
    #define LPS_INVERT      (LPS_NBSY | LPS_NACK |           LPS_SEL | LPS_NERR)
    #define LPS_MASK        (LPS_NBSY | LPS_NACK | LPS_OUT | LPS_SEL | LPS_NERR)
    #define NOT_READY(ppbus) ((ppbus_rstr(ppbus)^LPS_INVERT)&LPS_MASK)
    
    #endif /* __DEV_PPBUS_LPTREG_H */

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