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