NetBSD/sys/arch/amiga/dev/com_supio.c

171 lines
4.9 KiB
C

/* $NetBSD: com_supio.c,v 1.7 1998/04/11 18:28:34 is Exp $ */
/*-
* Copyright (c) 1993, 1994, 1995, 1996
* Charles M. Hannum. All rights reserved.
* 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/isa/isavar.h>*/
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
#include <amiga/dev/supio.h>
struct comsupio_softc {
struct com_softc sc_com;
struct isr sc_isr;
};
int com_supio_match __P((struct device *, struct cfdata *, void *));
void com_supio_attach __P((struct device *, struct device *, void *));
void com_supio_cleanup __P((void *));
#if 0
static int comconsaddr;
static bus_space_handle_t comconsioh;
static int comconsattached;
static bus_space_tag_t comconstag;
static int comconsrate;
static tcflag_t comconscflag;
#endif
struct cfattach com_supio_ca = {
sizeof(struct comsupio_softc), com_supio_match, com_supio_attach
};
int
com_supio_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
bus_space_tag_t iot;
int iobase;
int rv = 1;
struct supio_attach_args *supa = aux;
iot = supa->supio_iot;
iobase = supa->supio_iobase;
if (strcmp(supa->supio_name,"com"))
return 0;
#if 0
/* if it's in use as console, it's there. */
if (iobase != comconsaddr || comconsattached) {
if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
return 0;
}
rv = comprobe1(iot, ioh, iobase);
bus_space_unmap(iot, ioh, COM_NPORTS);
}
#endif
return (rv);
}
void
com_supio_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct comsupio_softc *sc = (void *)self;
struct com_softc *csc = &sc->sc_com;
int iobase;
bus_space_tag_t iot;
struct supio_attach_args *supa = aux;
u_int16_t needpsl;
/*
* We're living on a superio chip.
*/
iobase = csc->sc_iobase = supa->supio_iobase;
iot = csc->sc_iot = supa->supio_iot;
printf(" port 0x%x ipl %d", iobase, supa->supio_ipl);
if (bus_space_map(iot, iobase, COM_NPORTS, 0, &csc->sc_ioh))
panic("comattach: io mapping failed");
csc->sc_frequency = supa->supio_arg;
com_attach_subr(csc);
/* XXX this should be really in the interupt stuff */
needpsl = PSL_S | (supa->supio_ipl << 8);
if (amiga_serialspl < needpsl) {
printf("%s: raising amiga_serialspl from 0x%x to 0x%x\n",
csc->sc_dev.dv_xname, amiga_serialspl, needpsl);
amiga_serialspl = needpsl;
}
sc->sc_isr.isr_intr = comintr;
sc->sc_isr.isr_arg = csc;
sc->sc_isr.isr_ipl = supa->supio_ipl;
add_isr(&sc->sc_isr);
/*
* Shutdown hook for buggy BIOSs that don't recognize the UART
* without a disabled FIFO.
*/
if (shutdownhook_establish(com_supio_cleanup, csc) == NULL)
panic("comsupio: could not establish shutdown hook");
}
void
com_supio_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);
}