212 lines
7.1 KiB
C
212 lines
7.1 KiB
C
/* $NetBSD: com_obio.c,v 1.4 1999/11/21 15:23:01 pk 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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/*-
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* Copyright (c) 1991 The Regents of the University of California.
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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 product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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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 PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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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* @(#)com.c 7.5 (Berkeley) 5/16/91
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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/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/cpu.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#include <sparc/sparc/auxreg.h>
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struct com_obio_softc {
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struct com_softc osc_com; /* real "com" softc */
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/* OBIO-specific goo. */
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struct evcnt osc_intrcnt; /* interrupt counting */
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};
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static int com_obio_match __P((struct device *, struct cfdata *, void *));
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static void com_obio_attach __P((struct device *, struct device *, void *));
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static void com_obio_cleanup __P((void *));
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struct cfattach com_obio_ca = {
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sizeof(struct com_obio_softc), com_obio_match, com_obio_attach
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};
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static int
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com_obio_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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union obio_attach_args *uoba = aux;
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struct sbus_attach_args *sa = &uoba->uoba_sbus;
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if (uoba->uoba_isobio4 != 0) {
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return (0);
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}
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/* Tadpole 3GX/3GS uses "modem" for a 16450 port
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*/
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if (strcmp("modem", sa->sa_name) == 0) {
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bus_space_handle_t ioh;
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int rv = 0;
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u_int8_t auxregval = *AUXIO4M_REG;
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*AUXIO4M_REG = auxregval | (AUXIO4M_LED|AUXIO4M_LTE);
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DELAY(100);
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if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
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sa->sa_offset, sa->sa_size,
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BUS_SPACE_MAP_LINEAR, 0,
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&ioh) == 0) {
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rv = comprobe1(sa->sa_bustag, ioh);
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#if 0
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printf("modem: probe: lcr=0x%02x iir=0x%02x\n",
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bus_space_read_1(sa->sa_bustag, ioh, 3),
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bus_space_read_1(sa->sa_bustag, ioh, 2));
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#endif
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bus_space_unmap(sa->sa_bustag, ioh, sa->sa_size);
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}
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*AUXIO4M_REG = auxregval;
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return (rv);
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}
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return (0);
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}
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static void
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com_obio_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_obio_softc *osc = (void *)self;
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struct com_softc *sc = &osc->osc_com;
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union obio_attach_args *uoba = aux;
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struct sbus_attach_args *sa = &uoba->uoba_sbus;
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/*
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* We're living on an obio that looks like an sbus slot.
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*/
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sc->sc_iot = sa->sa_bustag;
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sc->sc_iobase = sa->sa_offset;
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if (!com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) &&
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sbus_bus_map(sc->sc_iot, sa->sa_slot,
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sc->sc_iobase, sa->sa_size,
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BUS_SPACE_MAP_LINEAR, 0,
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&sc->sc_ioh) != 0) {
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printf(": can't map registers\n");
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return;
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}
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*AUXIO4M_REG |= (AUXIO4M_LED|AUXIO4M_LTE);
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do {
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DELAY(100);
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} while (!comprobe1(sc->sc_iot, sc->sc_ioh));
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#if 0
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printf("modem: attach: lcr=0x%02x iir=0x%02x\n",
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bus_space_read_1(sc->sc_iot, sc->sc_ioh, 3),
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bus_space_read_1(sc->sc_iot, sc->sc_ioh, 2));
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#endif
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sc->sc_frequency = COM_FREQ;
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com_attach_subr(sc);
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if (sa->sa_nintr != 0) {
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(void)bus_intr_establish(sc->sc_iot, sa->sa_pri,
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0, comintr, sc);
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evcnt_attach(&osc->osc_com.sc_dev, "intr", &osc->osc_intrcnt);
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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_obio_cleanup, sc) == NULL) {
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panic("com_obio_attach: could not establish shutdown hook");
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}
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}
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static void
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com_obio_cleanup(arg)
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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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