196 lines
6.3 KiB
C
196 lines
6.3 KiB
C
/* $NetBSD: com_isa.c,v 1.13 1998/09/16 21:30:58 is Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Charles M. Hannum.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*-
|
|
* Copyright (c) 1991 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)com.c 7.5 (Berkeley) 5/16/91
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/select.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/user.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/file.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/types.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/intr.h>
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/ic/comreg.h>
|
|
#include <dev/ic/comvar.h>
|
|
|
|
#include <dev/isa/isavar.h>
|
|
|
|
struct com_isa_softc {
|
|
struct com_softc sc_com; /* real "com" softc */
|
|
|
|
/* ISA-specific goo. */
|
|
void *sc_ih; /* interrupt handler */
|
|
};
|
|
|
|
int com_isa_probe __P((struct device *, struct cfdata *, void *));
|
|
void com_isa_attach __P((struct device *, struct device *, void *));
|
|
void com_isa_cleanup __P((void *));
|
|
|
|
struct cfattach com_isa_ca = {
|
|
sizeof(struct com_isa_softc), com_isa_probe, com_isa_attach
|
|
};
|
|
|
|
int
|
|
com_isa_probe(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
int iobase;
|
|
int rv = 1;
|
|
struct isa_attach_args *ia = aux;
|
|
|
|
/* Disallow wildcarded i/o address. */
|
|
if (ia->ia_iobase == ISACF_PORT_DEFAULT)
|
|
return (0);
|
|
|
|
iot = ia->ia_iot;
|
|
iobase = ia->ia_iobase;
|
|
|
|
/* if it's in use as console, it's there. */
|
|
if (!com_is_console(iot, iobase, 0)) {
|
|
if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
|
|
return 0;
|
|
}
|
|
rv = comprobe1(iot, ioh);
|
|
bus_space_unmap(iot, ioh, COM_NPORTS);
|
|
}
|
|
|
|
if (rv) {
|
|
ia->ia_iosize = COM_NPORTS;
|
|
ia->ia_msize = 0;
|
|
}
|
|
return (rv);
|
|
}
|
|
|
|
void
|
|
com_isa_attach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct com_isa_softc *isc = (void *)self;
|
|
struct com_softc *sc = &isc->sc_com;
|
|
int iobase, irq;
|
|
bus_space_tag_t iot;
|
|
struct isa_attach_args *ia = aux;
|
|
|
|
/*
|
|
* We're living on an isa.
|
|
*/
|
|
iobase = sc->sc_iobase = ia->ia_iobase;
|
|
iot = sc->sc_iot = ia->ia_iot;
|
|
if (!com_is_console(iot, iobase, &sc->sc_ioh) &&
|
|
bus_space_map(iot, iobase, COM_NPORTS, 0, &sc->sc_ioh)) {
|
|
printf(": can't map i/o space\n");
|
|
return;
|
|
}
|
|
|
|
sc->sc_frequency = COM_FREQ;
|
|
irq = ia->ia_irq;
|
|
|
|
com_attach_subr(sc);
|
|
|
|
if (irq != IRQUNK) {
|
|
isc->sc_ih = isa_intr_establish(ia->ia_ic, irq,
|
|
IST_EDGE, IPL_SERIAL, comintr, sc);
|
|
}
|
|
|
|
/*
|
|
* Shutdown hook for buggy BIOSs that don't recognize the UART
|
|
* without a disabled FIFO.
|
|
*/
|
|
if (shutdownhook_establish(com_isa_cleanup, sc) == NULL)
|
|
panic("com_isa_attach: could not establish shutdown hook");
|
|
}
|
|
|
|
void
|
|
com_isa_cleanup(arg)
|
|
void *arg;
|
|
{
|
|
struct com_softc *sc = arg;
|
|
|
|
if (ISSET(sc->sc_hwflags, COM_HW_FIFO))
|
|
bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0);
|
|
}
|