132 lines
4.2 KiB
C
132 lines
4.2 KiB
C
/* $NetBSD: com_ebus.c,v 1.5 2002/09/27 20:35:44 thorpej Exp $ */
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/*-
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* Copyright (c) 1998 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 Charles M. Hannum.
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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 <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/termios.h>
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#include <machine/bus.h>
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#include <machine/autoconf.h>
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#include <machine/intr.h>
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#include <dev/pci/pcireg.h> /* XXX: for PCI_INTERRUPT_PIN */
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#include <dev/ebus/ebusreg.h>
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#include <dev/ebus/ebusvar.h>
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#include <dev/ic/ns16550reg.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_ebus_softc {
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struct com_softc ebsc_com; /* real "com" softc */
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/* this space for rent */
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};
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static int com_ebus_match(struct device *, struct cfdata *, void *);
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static void com_ebus_attach(struct device *, struct device *, void *);
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const struct cfattach com_ebus_ca = {
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sizeof(struct com_ebus_softc), com_ebus_match, com_ebus_attach
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};
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static int
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com_ebus_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct ebus_attach_args *ea = aux;
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bus_space_handle_t ioh;
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int match;
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if (strcmp(ea->ea_name, "su") != 0)
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return (0);
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match = 0;
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if (bus_space_map(ea->ea_bustag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
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ea->ea_reg[0].size, 0, &ioh) == 0)
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{
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match = comprobe1(ea->ea_bustag, ioh);
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bus_space_unmap(ea->ea_bustag, ioh, ea->ea_reg[0].size);
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}
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return (match);
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}
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static void
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com_ebus_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 com_ebus_softc *ebsc = (void *)self;
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struct com_softc *sc = &ebsc->ebsc_com;
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struct ebus_attach_args *ea = aux;
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sc->sc_iot = ea->ea_bustag;
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sc->sc_iobase = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]);
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sc->sc_frequency = COM_FREQ;
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sc->sc_hwflags = COM_HW_NO_TXPRELOAD;
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/*
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* XXX: It would be nice to be able to split console input and
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* output to different devices. For now switch to serial
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* console if PROM stdin is on serial (so that we can use DDB).
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*/
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if (prom_instance_to_package(prom_stdin()) == ea->ea_node)
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comcnattach(sc->sc_iot, sc->sc_iobase,
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B9600, sc->sc_frequency, (CLOCAL | CREAD | CS8));
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if (!com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh)
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&& bus_space_map(sc->sc_iot, sc->sc_iobase, ea->ea_reg[0].size,
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0, &sc->sc_ioh) != 0)
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{
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printf(": unable to map device registers\n");
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return;
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}
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com_attach_subr(sc);
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if (ea->ea_nintr != 0)
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(void)bus_intr_establish(sc->sc_iot,
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ea->ea_intr[0], IPL_SERIAL, 0,
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comintr, sc);
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}
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