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      1 /* $NetBSD: lptreg.h,v 1.6 2005/12/11 12:23:28 christos 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 */
     79