sys/dev/ppbus/lptreg.h

   1 /* $NetBSD: lptreg.h,v 1.4.4.4 2005/03/04 16:49:52 skrll 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 */