273 lines
7.8 KiB
C
273 lines
7.8 KiB
C
/* $NetBSD: com_pioc.c,v 1.10 2005/12/11 12:16:05 christos 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. 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>
|
|
|
|
__KERNEL_RCSID(0, "$NetBSD: com_pioc.c,v 1.10 2005/12/11 12:16:05 christos Exp $");
|
|
|
|
#include <sys/systm.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/intr.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/io.h>
|
|
|
|
#include <acorn32/mainbus/piocvar.h>
|
|
#include <dev/ic/comreg.h>
|
|
#include <dev/ic/comvar.h>
|
|
|
|
#include <dev/cons.h>
|
|
|
|
#include "locators.h"
|
|
|
|
struct com_pioc_softc {
|
|
struct com_softc sc_com; /* real "com" softc */
|
|
void *sc_ih; /* interrupt handler */
|
|
};
|
|
|
|
/* Prototypes for functions */
|
|
|
|
cons_decl(com);
|
|
|
|
static int com_pioc_probe __P((struct device *, struct cfdata *, void *));
|
|
static void com_pioc_attach __P((struct device *, struct device *, void *));
|
|
static void com_pioc_cleanup __P((void *));
|
|
|
|
/* device attach structure */
|
|
|
|
CFATTACH_DECL(com_pioc, sizeof(struct com_pioc_softc),
|
|
com_pioc_probe, com_pioc_attach, NULL, NULL);
|
|
|
|
extern bus_space_tag_t comconstag; /* From pioc.c */
|
|
|
|
/*
|
|
* int com_pioc_probe(struct device *parent, struct cfdata *cf, void *aux)
|
|
*
|
|
* Make sure we are trying to attach a com device and then
|
|
* probe for one.
|
|
*/
|
|
|
|
static int
|
|
com_pioc_probe(parent, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
int iobase;
|
|
int rv = 1;
|
|
struct pioc_attach_args *pa = aux;
|
|
|
|
/* We need an offset */
|
|
if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT)
|
|
return(0);
|
|
|
|
iot = pa->pa_iot;
|
|
iobase = pa->pa_iobase + pa->pa_offset;
|
|
|
|
/* 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) {
|
|
pa->pa_iosize = COM_NPORTS;
|
|
}
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* void com_pioc_attach(struct device *parent, struct device *self, void *aux)
|
|
*
|
|
* attach the com device
|
|
*/
|
|
|
|
static void
|
|
com_pioc_attach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct com_pioc_softc *psc = (void *)self;
|
|
struct com_softc *sc = &psc->sc_com;
|
|
u_int iobase;
|
|
bus_space_tag_t iot;
|
|
struct pioc_attach_args *pa = aux;
|
|
int count;
|
|
|
|
iot = sc->sc_iot = pa->pa_iot;
|
|
iobase = sc->sc_iobase = pa->pa_iobase + pa->pa_offset;
|
|
|
|
/*
|
|
printf(" (iot = %p, iobase = 0x%08x) ", iot, iobase);
|
|
*/
|
|
if (!com_is_console(iot, iobase, &sc->sc_ioh)
|
|
&& bus_space_map(iot, iobase, COM_NPORTS, 0, &sc->sc_ioh))
|
|
panic("comattach: io mapping failed");
|
|
|
|
sc->sc_frequency = COM_FREQ;
|
|
|
|
com_attach_subr(sc);
|
|
|
|
if (pa->pa_irq != MAINBUSCF_IRQ_DEFAULT) {
|
|
psc->sc_ih = intr_claim(pa->pa_irq, IPL_SERIAL, "com",
|
|
comintr, sc);
|
|
}
|
|
|
|
/*
|
|
* Shutdown hook for buggy BIOSs that don't recognize the UART
|
|
* without a disabled FIFO.
|
|
*/
|
|
if (shutdownhook_establish(com_pioc_cleanup, sc) == NULL)
|
|
panic("%s: could not establish shutdown hook",
|
|
sc->sc_dev.dv_xname);
|
|
|
|
/*
|
|
* This is a patch for bugged revision 1-4 SMC FDC37C665
|
|
* I/O controllers.
|
|
* If there is RX data pending when the FIFO in turned on
|
|
* the RX register cannot be emptied.
|
|
*
|
|
* Solution:
|
|
* Make sure FIFO is off.
|
|
* Read pending data / int status etc.
|
|
*/
|
|
bus_space_write_1(iot, sc->sc_ioh, com_fifo, 0);
|
|
for (count = 0; count < 8; ++count)
|
|
(void)bus_space_read_1(iot, sc->sc_ioh, count);
|
|
|
|
}
|
|
|
|
/*
|
|
* void com_pioc_cleanup(void *arg)
|
|
*
|
|
* clean up driver
|
|
*/
|
|
|
|
static void
|
|
com_pioc_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);
|
|
}
|
|
|
|
/*
|
|
* Console attachment functions
|
|
*/
|
|
|
|
void
|
|
comcnprobe(cp)
|
|
struct consdev *cp;
|
|
{
|
|
|
|
#ifdef COMCONSOLE
|
|
cp->cn_pri = CN_REMOTE; /* Force a serial port console */
|
|
#else
|
|
cp->cn_pri = CN_NORMAL;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
comcninit(cp)
|
|
struct consdev *cp;
|
|
{
|
|
int result;
|
|
|
|
#ifndef CONMODE
|
|
#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
|
|
#endif
|
|
#ifndef CONSPEED
|
|
#define CONSPEED 38400
|
|
#endif
|
|
#ifndef CONADDR
|
|
#define CONADDR 0x3f8
|
|
#endif
|
|
|
|
result = comcnattach(comconstag, (IO_CONF_BASE + CONADDR), CONSPEED,
|
|
COM_FREQ, COM_TYPE_NORMAL, CONMODE);
|
|
if (result) {
|
|
printf("initialising serial; got errornr %d\n", result);
|
|
panic("can't init serial console @%x", CONADDR);
|
|
};
|
|
}
|
|
|
|
|
|
/* End of com_pioc.c */
|