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

     /*-
      * Copyright (c) 1997 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 
     *
     * $FreeBSD$
     */
    #ifndef __NLPT_H
    #define __NLPT_H
    
    #define LPS_NERR                0x08    /* printer no error */
    #define LPS_SEL                 0x10    /* printer selected */
    #define LPS_OUT                 0x20    /* printer out of paper */
    #define LPS_NACK                0x40    /* printer no ack of data */
    #define LPS_NBSY                0x80    /* printer no ack of data */
    
    #define LPC_STB                 0x01    /* strobe data to printer */
    #define LPC_AUTOL               0x02    /* automatic linefeed */
    #define LPC_NINIT               0x04    /* initialize printer */
    #define LPC_SEL                 0x08    /* printer selected */
    #define LPC_ENA                 0x10    /* enable IRQ */
    
    struct lpt_data {
            unsigned short lpt_unit;
    
            struct ppb_device lpt_dev;
    
            short   sc_state;
            /* default case: negative prime, negative ack, handshake strobe,
               prime once */
            u_char  sc_control;
            char    sc_flags;
    #define LP_POS_INIT     0x04    /* if we are a postive init signal */
    #define LP_POS_ACK      0x08    /* if we are a positive going ack */
    #define LP_NO_PRIME     0x10    /* don't prime the printer at all */
    #define LP_PRIMEOPEN    0x20    /* prime on every open */
    #define LP_AUTOLF       0x40    /* tell printer to do an automatic lf */
    #define LP_BYPASS       0x80    /* bypass  printer ready checks */
            struct  buf *sc_inbuf;
            struct  buf *sc_statbuf;
            short   sc_xfercnt ;
            char    sc_primed;
            char    *sc_cp ;
            u_short sc_irq ;        /* IRQ status of port */
    #define LP_HAS_IRQ      0x01    /* we have an irq available */
    #define LP_USE_IRQ      0x02    /* we are using our irq */
    #define LP_ENABLE_IRQ   0x04    /* enable IRQ on open */
    #define LP_ENABLE_EXT   0x10    /* we shall use advanced mode when possible */
            u_char  sc_backoff ;    /* time to call lptout() again */
    
    #ifdef DEVFS
            void    *devfs_token;
            void    *devfs_token_ctl;
    #endif
    };
    
    #endif

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