NetBSD/sys/arch/alpha/sableio/com_sableio.c

147 lines
4.6 KiB
C

/* $NetBSD: com_sableio.c,v 1.1 2000/12/21 20:51:56 thorpej Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: com_sableio.c,v 1.1 2000/12/21 20:51:56 thorpej Exp $");
#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/pci/pcivar.h>
#include <dev/isa/isavar.h>
#include <alpha/sableio/sableiovar.h>
struct com_sableio_softc {
struct com_softc sc_com; /* real "com" softc */
/* STDIO-specific goo. */
void *sc_ih; /* interrupt handler */
};
int com_sableio_match(struct device *, struct cfdata *, void *);
void com_sableio_attach(struct device *, struct device *, void *);
void com_sableio_cleanup(void *);
struct cfattach com_sableio_ca = {
sizeof(struct com_sableio_softc), com_sableio_match, com_sableio_attach
};
int
com_sableio_match(struct device *parent, struct cfdata *match, void *aux)
{
struct sableio_attach_args *sa = aux;
/* Always present. */
if (strcmp(sa->sa_name, match->cf_driver->cd_name) == 0)
return (1);
return (0);
}
void
com_sableio_attach(struct device *parent, struct device *self, void *aux)
{
struct com_sableio_softc *ssc = (void *)self;
struct com_softc *sc = &ssc->sc_com;
struct sableio_attach_args *sa = aux;
const char *intrstr;
sc->sc_iot = sa->sa_iot;
sc->sc_iobase = sa->sa_ioaddr;
if (com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) == 0 &&
bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS, 0,
&sc->sc_ioh) != 0) {
printf(": can't map i/o space\n");
return;
}
sc->sc_frequency = COM_FREQ;
com_attach_subr(sc);
intrstr = pci_intr_string(sa->sa_pc, sa->sa_sableirq[0]);
ssc->sc_ih = pci_intr_establish(sa->sa_pc, sa->sa_sableirq[0],
IPL_SERIAL, comintr, sc);
if (ssc->sc_ih == NULL) {
printf("%s: unable to establish interrupt",
sc->sc_dev.dv_xname);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
/*
* Shutdown hook for buggy BIOSs that don't recognize the UART
* without a disabled FIFO.
*/
if (shutdownhook_establish(com_sableio_cleanup, sc) == NULL)
panic("com_sableio_attach: could not establish shutdown hook");
}
void
com_sableio_cleanup(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);
}