The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /* $NetBSD: lptreg.h,v 1.4 2004/01/28 17:11:48 jdolecek Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 1990 The Regents of the University of California.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to Berkeley by
    8  * William Jolitz.
    9  *
   10  * Copyright (c) 1997, 1999 Nicolas Souchu
   11  * All rights reserved.
   12  *
   13  * Redistribution and use in source and binary forms, with or without
   14  * modification, are permitted provided that the following conditions
   15  * are met:
   16  * 1. Redistributions of source code must retain the above copyright
   17  *    notice, this list of conditions and the following disclaimer.
   18  * 2. Redistributions in binary form must reproduce the above copyright
   19  *    notice, this list of conditions and the following disclaimer in the
   20  *    documentation and/or other materials provided with the distribution.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  *
   34  * Distantly from :
   35  *      @(#)lptreg.h      1.1 (Berkeley) 12/19/90
   36  *      Id: lptreg.h,v 1.6 1997/02/22 09:36:52 peter Exp 
   37  *      From Id: nlpt.h,v 1.3 1999/01/10 12:04:54 nsouch Exp
   38  *
   39  * FreeBSD: src/sys/dev/ppbus/lpt.h,v 1.4 1999/08/28 00:42:23 peter Exp
   40  */
   41 
   42 /*
   43  * AT Parallel Port (for lineprinter)
   44  * Interface port and bit definitions
   45  * Written by William Jolitz 12/18/90
   46  * Copyright (C) William Jolitz 1990
   47  */
   48 
   49 #ifndef __DEV_PPBUS_LPTREG_H
   50 #define __DEV_PPBUS_LPTREG_H
   51 
   52 /* machine independent definitions, it shall only depend on the ppbus
   53  * parallel port model */
   54 
   55                                         /* PIN */
   56 #define LPS_NERR                0x08    /* 15  printer no error */
   57 #define LPS_SEL                 0x10    /* 13  printer selected */
   58 #define LPS_OUT                 0x20    /* 12  printer out of paper */
   59 #define LPS_NACK                0x40    /* 10  printer no ack of data */
   60 #define LPS_NBSY                0x80    /* 11  printer busy */
   61 
   62 #define LPC_STB                 0x01    /*  1  strobe data to printer */
   63 #define LPC_AUTOL               0x02    /* 14  automatic linefeed */
   64 #define LPC_NINIT               0x04    /* 16  initialize printer */
   65 #define LPC_SEL                 0x08    /* 17  printer selected */
   66 #define LPC_ENA                 0x10    /*  -  enable IRQ */
   67 
   68 /* status masks to interrogate printer status */
   69 #define RDY_MASK        (LPS_SEL|LPS_OUT|LPS_NBSY|LPS_NERR)     /* ready ? */
   70 #define LP_READY        (LPS_SEL|LPS_NBSY|LPS_NERR)
   71 
   72 /* Printer Ready condition  - from lpa.c */
   73 /* Only used in polling code */
   74 #define LPS_INVERT      (LPS_NBSY | LPS_NACK |           LPS_SEL | LPS_NERR)
   75 #define LPS_MASK        (LPS_NBSY | LPS_NACK | LPS_OUT | LPS_SEL | LPS_NERR)
   76 #define NOT_READY(ppbus) ((ppbus_rstr(ppbus)^LPS_INVERT)&LPS_MASK)
   77 
   78 #endif /* __DEV_PPBUS_LPTREG_H */

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