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/* $OpenBSD: com_supio.c,v 1.4 2002/03/14 01:26:28 millert Exp $ */
/* $NetBSD: com_supio.c,v 1.3 1997/08/27 20:41:30 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/amiga/isr.h>
#include <amiga/dev/supio.h>
struct comsupio_softc {
struct com_softc sc_com;
struct isr sc_isr;
};
int com_supio_match(struct device *, void *, void *);
void com_supio_attach(struct device *, struct device *, void *);
void com_supio_cleanup(void *);
static int comconsaddr;
static bus_space_handle_t comconsioh;
#if 0
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;
void *match;
void *aux;
{
struct cfdata *cfp = match;
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") || (cfp->cf_unit > 1))
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;
{
#ifdef __OpenBSD__
struct comsupio_softc *sc = (void *)self;
struct com_softc *csc = &sc->sc_com;
int iobase;
bus_space_tag_t iot;
bus_space_handle_t ioh;
struct supio_attach_args *supa = aux;
csc->sc_hwflags = 0;
csc->sc_swflags = 0;
iobase = csc->sc_iobase = supa->supio_iobase;
iot = csc->sc_iot = supa->supio_iot;
if (iobase != comconsaddr) {
if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh))
panic("comattach: io mapping failed");
} else
ioh = comconsioh;
csc->sc_iot = iot;
csc->sc_ioh = ioh;
csc->sc_iobase = iobase;
if (iobase == comconsaddr) {
comconsattached = 1;
/*
* Need to reset baud rate, etc. of next print so reset
* comconsinit. Also make sure console is always "hardwired".
*/
delay(1000); /* wait for output to finish */
comconsinit = 0;
SET(csc->sc_hwflags, COM_HW_CONSOLE);
SET(csc->sc_swflags, COM_SW_SOFTCAR);
}
/* look for a NS 16550AF UART with FIFOs */
bus_space_write_1(iot, ioh, com_fifo,
FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_14);
delay(100);
if (ISSET(bus_space_read_1(iot, ioh, com_iir), IIR_FIFO_MASK) ==
IIR_FIFO_MASK) {
if (ISSET(bus_space_read_1(iot, ioh, com_fifo),
FIFO_TRIGGER_14) == FIFO_TRIGGER_14) {
SET(csc->sc_hwflags, COM_HW_FIFO);
printf(": ns16550a, working fifo\n");
} else
printf(": ns16550, broken fifo\n");
} else
printf(": ns8250 or ns16450, no fifo\n");
bus_space_write_1(iot, ioh, com_fifo, 0);
/* disable interrupts */
bus_space_write_1(iot, ioh, com_ier, 0);
bus_space_write_1(iot, ioh, com_mcr, 0);
if (amiga_ttyspl < (PSL_S|PSL_IPL5)) {
printf("%s: raising amiga_ttyspl from 0x%x to 0x%x\n",
csc->sc_dev.dv_xname, amiga_ttyspl, PSL_S|PSL_IPL5);
amiga_ttyspl = PSL_S|PSL_IPL5;
}
sc->sc_isr.isr_intr = comintr;
sc->sc_isr.isr_arg = csc;
sc->sc_isr.isr_ipl = 5;
add_isr(&sc->sc_isr);
#ifdef KGDB
if (kgdb_dev == makedev(commajor, unit)) {
if (ISSET(csc->sc_hwflags, COM_HW_CONSOLE))
kgdb_dev = -1; /* can't debug over console port */
else {
cominit(iot, ioh, kgdb_rate);
if (kgdb_debug_init) {
/*
* Print prefix of device name,
* let kgdb_connect print the rest.
*/
printf("%s: ", csc->sc_dev.dv_xname);
kgdb_connect(1);
} else
printf("%s: kgdb enabled\n",
csc->sc_dev.dv_xname);
}
}
#endif
/* XXX maybe move up some? */
if (ISSET(csc->sc_hwflags, COM_HW_CONSOLE))
printf("%s: console\n", csc->sc_dev.dv_xname);
#else /* __OpenBSD__ */
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;
/*
* We're living on a superio chip.
*/
iobase = csc->sc_iobase = supa->supio_iobase;
iot = csc->sc_iot = supa->supio_iot;
if (iobase != comconsaddr) {
if (bus_space_map(iot, iobase, COM_NPORTS, 0, &csc->sc_ioh))
panic("comattach: io mapping failed");
} else
csc->sc_ioh = comconsioh;
printf(" port 0x%x", iobase);
com_attach_subr(csc);
if (amiga_ttyspl < (PSL_S|PSL_IPL5)) {
printf("%s: raising amiga_ttyspl from 0x%x to 0x%x\n",
csc->sc_dev.dv_xname, amiga_ttyspl, PSL_S|PSL_IPL5);
amiga_ttyspl = PSL_S|PSL_IPL5;
}
sc->sc_isr.isr_intr = comintr;
sc->sc_isr.isr_arg = csc;
sc->sc_isr.isr_ipl = 5;
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");
#endif /* __OpenBSD__ */
}
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);
}
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