151 lines
4.7 KiB
C
151 lines
4.7 KiB
C
/* $NetBSD: lpt_pioc.c,v 1.1 1997/10/14 19:57:40 mark 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 parallel printer port
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/irqhandler.h>
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#include <arm32/dev/lptreg.h>
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#include <arm32/dev/lptvar.h>
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#include <arm32/mainbus/piocvar.h>
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#include "locators.h"
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/* Prototypes for functions */
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static int lpt_pioc_probe __P((struct device *, struct cfdata *, void *));
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static void lpt_pioc_attach __P((struct device *, struct device *, void *));
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/* device attach structure */
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struct cfattach lpt_pioc_ca = {
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sizeof(struct lpt_softc), lpt_pioc_probe, lpt_pioc_attach
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};
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/*
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* int lpt_pioc_probe(struct device *parent, struct cfdata *cf, void *aux)
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*
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* Make sure we are trying to attach a lpt device and then
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* probe for one.
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*/
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static int
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lpt_pioc_probe(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct pioc_attach_args *pa = aux;
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int rv;
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if (pa->pa_name && strcmp(pa->pa_name, "lpt") != 0)
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return(0);
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/* We need an offset */
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if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT)
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return(0);
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rv = lptprobe(pa->pa_iot, pa->pa_iobase + pa->pa_offset);
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if (rv) {
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pa->pa_iosize = rv;
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return(1);
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}
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return(0);
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}
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/*
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* void lpt_pioc_attach(struct device *parent, struct device *self, void *aux)
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*
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* attach the lpt device
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*/
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static void
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lpt_pioc_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct lpt_softc *sc = (void *)self;
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struct pioc_attach_args *pa = aux;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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if (pa->pa_irq != MAINBUSCF_IRQ_DEFAULT) {
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printf("\n");
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sc->sc_irq = pa->pa_irq;
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} else {
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printf(": polled\n");
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sc->sc_irq = LPT_NOIRQ;
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}
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sc->sc_iobase = pa->pa_iobase + pa->pa_offset;
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sc->sc_state = 0;
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iot = sc->sc_iot = pa->pa_iot;
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if (bus_space_map(iot, sc->sc_iobase, LPT_NPORTS, 0, &ioh))
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panic("lptattach: couldn't map I/O ports");
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sc->sc_ioh = ioh;
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bus_space_write_1(iot, ioh, lpt_control, LPC_NINIT);
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if (pa->pa_irq != MAINBUSCF_IRQ_DEFAULT)
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sc->sc_ih = intr_claim(pa->pa_irq, IPL_TTY, "lpt",
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lptintr, sc);
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}
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/* End of lpt_pioc.c */
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