169 lines
5.0 KiB
C
169 lines
5.0 KiB
C
/* $NetBSD: com_gsc.c,v 1.11 2006/07/13 22:56:01 gdamore Exp $ */
|
|
|
|
/* $OpenBSD: com_gsc.c,v 1.8 2000/03/13 14:39:59 mickey Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1998 Michael Shalayeff
|
|
* 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 Michael Shalayeff.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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>
|
|
__KERNEL_RCSID(0, "$NetBSD: com_gsc.c,v 1.11 2006/07/13 22:56:01 gdamore Exp $");
|
|
|
|
#include "opt_kgdb.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
#include <sys/tty.h>
|
|
|
|
#ifdef KGDB
|
|
#include <sys/kgdb.h>
|
|
#endif
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/intr.h>
|
|
#include <machine/iomod.h>
|
|
#include <machine/autoconf.h>
|
|
|
|
#include <dev/ic/comreg.h>
|
|
#include <dev/ic/comvar.h>
|
|
|
|
#include <hp700/dev/cpudevs.h>
|
|
#include <hp700/gsc/gscbusvar.h>
|
|
#include <hp700/hp700/machdep.h>
|
|
|
|
#define COMGSC_OFFSET 0x800
|
|
#define COMGSC_FREQUENCY (1843200 * 4) /* 16-bit baud rate divisor */
|
|
|
|
struct com_gsc_regs {
|
|
u_int8_t reset;
|
|
};
|
|
|
|
struct com_gsc_softc {
|
|
struct com_softc sc_com; /* real "com" softc */
|
|
|
|
/* GSC-specific goo. */
|
|
void *sc_ih; /* interrupt handler */
|
|
};
|
|
|
|
int com_gsc_probe(struct device *, struct cfdata *, void *);
|
|
void com_gsc_attach(struct device *, struct device *, void *);
|
|
|
|
CFATTACH_DECL(com_gsc, sizeof(struct com_gsc_softc),
|
|
com_gsc_probe, com_gsc_attach, NULL, NULL);
|
|
|
|
int
|
|
com_gsc_probe(struct device *parent, struct cfdata *match, void *aux)
|
|
{
|
|
struct gsc_attach_args *ga = aux;
|
|
|
|
if (ga->ga_type.iodc_type != HPPA_TYPE_FIO ||
|
|
(ga->ga_type.iodc_sv_model != HPPA_FIO_GRS232 &&
|
|
ga->ga_type.iodc_sv_model != HPPA_FIO_RS232))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
com_gsc_attach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
struct com_gsc_softc *gsc = (void *)self;
|
|
struct com_softc *sc = &gsc->sc_com;
|
|
struct gsc_attach_args *ga = aux;
|
|
int pagezero_cookie;
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
bus_addr_t iobase;
|
|
|
|
sc->sc_hwflags = 0;
|
|
sc->sc_swflags = 0;
|
|
iot = ga->ga_iot;
|
|
iobase = (bus_addr_t)ga->ga_hpa + COMGSC_OFFSET;
|
|
sc->sc_frequency = COMGSC_FREQUENCY;
|
|
|
|
/* Test if this is the console. Compare either HPA or device path. */
|
|
pagezero_cookie = hp700_pagezero_map();
|
|
if ((hppa_hpa_t)PAGE0->mem_cons.pz_hpa == ga->ga_hpa ) {
|
|
|
|
/*
|
|
* This port is the console. In this case we must call
|
|
* comcnattach() and later com_is_console() to initialize
|
|
* everything properly.
|
|
*/
|
|
|
|
if (comcnattach(iot, iobase, B9600,
|
|
sc->sc_frequency, COM_TYPE_NORMAL,
|
|
(TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0) {
|
|
printf(": can't comcnattach\n");
|
|
hp700_pagezero_unmap(pagezero_cookie);
|
|
return;
|
|
}
|
|
}
|
|
hp700_pagezero_unmap(pagezero_cookie);
|
|
|
|
/*
|
|
* Get the already initialized console ioh via com_is_console() if
|
|
* this is the console or map the I/O space if this isn't the console.
|
|
*/
|
|
|
|
if (!com_is_console(iot, iobase, &ioh) &&
|
|
bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh) != 0) {
|
|
printf(": can't map I/O space\n");
|
|
return;
|
|
}
|
|
COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase);
|
|
|
|
com_attach_subr(sc);
|
|
gsc->sc_ih = hp700_intr_establish(&sc->sc_dev, IPL_TTY,
|
|
comintr, sc, ga->ga_int_reg, ga->ga_irq);
|
|
}
|
|
|
|
#ifdef KGDB
|
|
int com_gsc_kgdb_attach(void);
|
|
int
|
|
com_gsc_kgdb_attach(void)
|
|
{
|
|
int error;
|
|
|
|
printf("kgdb: attaching com at 0x%x at %d baud...",
|
|
KGDBADDR, KGDBRATE);
|
|
error = com_kgdb_attach(&hppa_bustag, KGDBADDR + COMGSC_OFFSET,
|
|
KGDBRATE, COMGSC_FREQUENCY, COM_TYPE_NORMAL,
|
|
((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) |
|
|
CS8));
|
|
if (error) {
|
|
printf(" failed (%d)\n", error);
|
|
} else {
|
|
printf(" ok\n");
|
|
}
|
|
return (error);
|
|
}
|
|
#endif /* KGDB */
|