184 lines
4.9 KiB
C
184 lines
4.9 KiB
C
/* $NetBSD: com_gsc.c,v 1.3 2002/08/25 20:20:00 fredette Exp $ */
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/* $OpenBSD: com_gsc.c,v 1.8 2000/03/13 14:39:59 mickey Exp $ */
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/*
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* Copyright (c) 1998 Michael Shalayeff
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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 Michael Shalayeff.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_kgdb.h"
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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/tty.h>
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#ifdef KGDB
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#include <sys/kgdb.h>
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#endif
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <machine/iomod.h>
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#include <machine/autoconf.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#include <hp700/dev/cpudevs.h>
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#include <hp700/gsc/gscbusvar.h>
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#define COMGSC_OFFSET 0x800
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#define COMGSC_FREQUENCY (1843200 * 4) /* 16-bit baud rate divisor */
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struct com_gsc_regs {
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u_int8_t reset;
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};
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struct com_gsc_softc {
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struct com_softc sc_com; /* real "com" softc */
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/* GSC-specific goo. */
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void *sc_ih; /* interrupt handler */
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};
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int com_gsc_probe __P((struct device *, struct cfdata *, void *));
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void com_gsc_attach __P((struct device *, struct device *, void *));
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struct cfattach com_gsc_ca = {
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sizeof(struct com_gsc_softc), com_gsc_probe, com_gsc_attach
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};
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int
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com_gsc_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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register struct gsc_attach_args *ga = aux;
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bus_space_handle_t ioh;
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int rv;
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if (ga->ga_type.iodc_type != HPPA_TYPE_FIO ||
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(ga->ga_type.iodc_sv_model != HPPA_FIO_GRS232 &&
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(ga->ga_type.iodc_sv_model != HPPA_FIO_RS232)))
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return 0;
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#if 1
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/*
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* XXX fredette - don't match anything unless it
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* happens to be the KGDB port, since any other
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* port might be a serial console, and I haven't
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* done any console work yet.
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*/
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if (
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#ifdef KGDB
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ga->ga_hpa != KGDBADDR
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#else
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/* CONSTCOND */ 1
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#endif
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)
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return 0;
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#endif
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/*
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* If this port is the console or a KGDB port,
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* we definitely match, otherwise map and probe
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* the port.
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*/
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if (!com_is_console(ga->ga_iot, ga->ga_hpa + COMGSC_OFFSET, 0)) {
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if (bus_space_map(ga->ga_iot, ga->ga_hpa + COMGSC_OFFSET,
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COM_NPORTS, 0, &ioh))
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return 0;
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rv = comprobe1(ga->ga_iot, ioh);
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bus_space_unmap(ga->ga_iot, ioh, COM_NPORTS);
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if (!rv)
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return 0;
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}
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/* Success. */
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return 1;
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}
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void
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com_gsc_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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register struct com_gsc_softc *gsc = (void *)self;
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struct com_softc *sc = &gsc->sc_com;
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register struct gsc_attach_args *ga = aux;
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sc->sc_hwflags = 0;
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sc->sc_swflags = 0;
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sc->sc_iot = ga->ga_iot;
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sc->sc_iobase = (bus_addr_t)ga->ga_hpa + COMGSC_OFFSET;
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sc->sc_frequency = COMGSC_FREQUENCY;
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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,
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COM_NPORTS, 0, &sc->sc_ioh)) {
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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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#if notyet
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*(volatile u_int8_t *)ga->ga_hpa = 0xd0; /* reset */
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DELAY(1000);
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#endif
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com_attach_subr(sc);
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gsc->sc_ih = hp700_intr_establish(&sc->sc_dev, IPL_TTY,
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comintr, sc,
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ga->ga_int_reg, ga->ga_irq);
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}
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#ifdef KGDB
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int com_gsc_kgdb_attach __P((void));
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int
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com_gsc_kgdb_attach(void)
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{
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int error;
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printf("kgdb: attaching com at 0x%x at %d baud...",
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KGDBADDR, KGDBRATE);
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error = com_kgdb_attach(&hppa_bustag,
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KGDBADDR + COMGSC_OFFSET,
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KGDBRATE, COMGSC_FREQUENCY,
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/* 8N1 */
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((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8));
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if (error) {
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printf(" failed (%d)\n", error);
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} else {
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printf(" ok\n");
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}
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return (error);
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}
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#endif /* KGDB */
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