137 lines
4.3 KiB
C
137 lines
4.3 KiB
C
/* $NetBSD: com_mainbus.c,v 1.7 2002/10/02 03:36:20 thorpej Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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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 product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_algor_p4032.h"
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: com_mainbus.c,v 1.7 2002/10/02 03:36:20 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ioctl.h>
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#include <sys/select.h>
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#include <sys/tty.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <sys/conf.h>
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#include <sys/file.h>
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#include <sys/uio.h>
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#include <sys/kernel.h>
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#include <sys/syslog.h>
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#include <sys/types.h>
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#include <sys/device.h>
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#include <machine/autoconf.h>
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#include <machine/intr.h>
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#include <machine/bus.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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struct com_mainbus_softc {
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struct com_softc sc_com; /* real "com" softc */
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/* mainbus-specific goo. */
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void *sc_ih; /* interrupt handler */
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};
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int com_mainbus_match(struct device *, struct cfdata *, void *);
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void com_mainbus_attach(struct device *, struct device *, void *);
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void com_mainbus_cleanup(void *);
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CFATTACH_DECL(com_mainbus, sizeof(struct com_mainbus_softc),
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com_mainbus_match, com_mainbus_attach, NULL, NULL);
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int
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com_mainbus_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct mainbus_attach_args *ma = aux;
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/* Always present. */
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if (strcmp(ma->ma_name, match->cf_name) == 0)
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return (1);
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return (0);
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}
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void
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com_mainbus_attach(struct device *parent, struct device *self, void *aux)
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{
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struct com_mainbus_softc *msc = (void *)self;
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struct com_softc *sc = &msc->sc_com;
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struct mainbus_attach_args *ma = aux;
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sc->sc_iot = ma->ma_st;
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sc->sc_iobase = ma->ma_addr;
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if (com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) == 0 &&
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bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS, 0,
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&sc->sc_ioh) != 0) {
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printf(": can't map i/o space\n");
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return;
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}
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sc->sc_frequency = COM_FREQ;
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com_attach_subr(sc);
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msc->sc_ih = (*algor_intr_establish)(ma->ma_irq, comintr, sc);
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if (msc->sc_ih == NULL) {
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printf("%s: unable to establish interrupt\n",
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sc->sc_dev.dv_xname);
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return;
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}
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/*
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* Shutdown hook for buggy BIOSs that don't recognize the UART
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* without a disabled FIFO.
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*/
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if (shutdownhook_establish(com_mainbus_cleanup, sc) == NULL)
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panic("com_mainbus_attach: could not establish shutdown hook");
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}
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void
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com_mainbus_cleanup(void *arg)
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{
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struct com_softc *sc = arg;
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if (ISSET(sc->sc_hwflags, COM_HW_FIFO))
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0);
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}
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