c2f42b2213
This is useful in the case where an attachment's probe routine verifies that there is indeed hardware present but something goes "wrong" in the attach causing the device to be unusable. (Without keeping track of this, in that case incorrect ports could be accessed or uninitted pointers could be deferenced on open or at other times.)
94 lines
3.9 KiB
C
94 lines
3.9 KiB
C
/* $NetBSD: lptvar.h,v 1.48 1998/02/02 22:55:06 cgd Exp $ */
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/*
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* Copyright (c) 1993, 1994 Charles Hannum.
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* Copyright (c) 1990 William F. Jolitz, TeleMuse
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This software is a component of "386BSD" developed by
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* William F. Jolitz, TeleMuse.
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* 4. Neither the name of the developer nor the name "386BSD"
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS A COMPONENT OF 386BSD DEVELOPED BY WILLIAM F. JOLITZ
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* AND IS INTENDED FOR RESEARCH AND EDUCATIONAL PURPOSES ONLY. THIS
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* SOFTWARE SHOULD NOT BE CONSIDERED TO BE A COMMERCIAL PRODUCT.
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* THE DEVELOPER URGES THAT USERS WHO REQUIRE A COMMERCIAL PRODUCT
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* NOT MAKE USE OF THIS WORK.
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*
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* FOR USERS WHO WISH TO UNDERSTAND THE 386BSD SYSTEM DEVELOPED
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* BY WILLIAM F. JOLITZ, WE RECOMMEND THE USER STUDY WRITTEN
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* REFERENCES SUCH AS THE "PORTING UNIX TO THE 386" SERIES
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* (BEGINNING JANUARY 1991 "DR. DOBBS JOURNAL", USA AND BEGINNING
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* JUNE 1991 "UNIX MAGAZIN", GERMANY) BY WILLIAM F. JOLITZ AND
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* LYNNE GREER JOLITZ, AS WELL AS OTHER BOOKS ON UNIX AND THE
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* ON-LINE 386BSD USER MANUAL BEFORE USE. A BOOK DISCUSSING THE INTERNALS
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* OF 386BSD ENTITLED "386BSD FROM THE INSIDE OUT" WILL BE AVAILABLE LATE 1992.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPER ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE DEVELOPER BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Device Driver for AT style parallel printer port
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*/
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#ifndef _LPT_VAR_H_
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#define _LPT_VAR_H_
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struct lpt_softc {
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struct device sc_dev;
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void *sc_ih;
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size_t sc_count;
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void *sc_inbuf;
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u_char *sc_cp;
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int sc_spinmax;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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u_char sc_dev_ok; /* device attached correctly */
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u_char sc_state;
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#define LPT_OPEN 0x01 /* device is open */
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#define LPT_OBUSY 0x02 /* printer is busy doing output */
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#define LPT_INIT 0x04 /* waiting to initialize for open */
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u_char sc_flags;
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#define LPT_AUTOLF 0x20 /* automatic LF on CR */
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#define LPT_NOPRIME 0x40 /* don't prime on open */
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#define LPT_NOINTR 0x80 /* do not use interrupt */
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u_char sc_control;
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u_char sc_laststatus;
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};
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#define LPS_INVERT (LPS_SELECT|LPS_NERR|LPS_NBSY|LPS_NACK)
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#define LPS_MASK (LPS_SELECT|LPS_NERR|LPS_NBSY|LPS_NACK|LPS_NOPAPER)
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#define NOT_READY() ((bus_space_read_1(iot, ioh, lpt_status) ^ LPS_INVERT) & LPS_MASK)
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#define NOT_READY_ERR() lptnotready(bus_space_read_1(iot, ioh, lpt_status), sc)
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int lptnotready __P((u_char, struct lpt_softc *));
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void lptwakeup __P((void *arg));
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int lptpushbytes __P((struct lpt_softc *));
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void lpt_attach_subr __P((struct lpt_softc *));
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int lptintr __P((void *));
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#endif /* _LPT_VAR_H_ */
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