222 lines
5.9 KiB
C
222 lines
5.9 KiB
C
/* $NetBSD: hd64465uart.c,v 1.10 2003/07/15 02:29:37 lukem Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
|
|
* 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 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>
|
|
__KERNEL_RCSID(0, "$NetBSD: hd64465uart.c,v 1.10 2003/07/15 02:29:37 lukem Exp $");
|
|
|
|
#include "opt_kgdb.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/reboot.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/device.h>
|
|
#include <sys/kgdb.h>
|
|
|
|
#include <sys/termios.h>
|
|
#include <dev/cons.h>
|
|
#include <sys/conf.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/intr.h>
|
|
#include <machine/console.h>
|
|
|
|
#include <dev/ic/comvar.h>
|
|
#include <dev/ic/comreg.h>
|
|
|
|
#include <machine/debug.h>
|
|
|
|
#include <hpcsh/dev/hd64465/hd64465var.h>
|
|
#include <hpcsh/dev/hd64465/hd64465intcreg.h>
|
|
#include <hpcsh/dev/hd64465/hd64465uartvar.h>
|
|
#include <hpcsh/dev/hd64465/hd64465uartreg.h>
|
|
|
|
STATIC struct hd64465uart_chip {
|
|
struct hpcsh_bus_space __tag_body;
|
|
bus_space_tag_t io_tag;
|
|
int console;
|
|
} hd64465uart_chip;
|
|
|
|
struct hd64465uart_softc {
|
|
struct com_softc sc_com;
|
|
|
|
struct hd64465uart_chip *sc_chip;
|
|
enum hd64465_module_id sc_module_id;
|
|
};
|
|
|
|
/* boot console */
|
|
void hd64465uartcnprobe(struct consdev *);
|
|
void hd64465uartcninit(struct consdev *);
|
|
|
|
STATIC int hd64465uart_match(struct device *, struct cfdata *, void *);
|
|
STATIC void hd64465uart_attach(struct device *, struct device *, void *);
|
|
|
|
CFATTACH_DECL(hd64465uart, sizeof(struct hd64465uart_softc),
|
|
hd64465uart_match, hd64465uart_attach, NULL, NULL);
|
|
|
|
STATIC void hd64465uart_init(void);
|
|
STATIC u_int8_t hd64465uart_read_1(void *, bus_space_handle_t, bus_size_t);
|
|
STATIC void hd64465uart_write_1(void *, bus_space_handle_t, bus_size_t,
|
|
u_int8_t);
|
|
|
|
#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
|
|
#ifndef COMCN_SPEED
|
|
#define COMCN_SPEED 19200
|
|
#endif
|
|
|
|
void
|
|
hd64465uartcnprobe(struct consdev *cp)
|
|
{
|
|
extern struct cdevsw com_cdevsw;
|
|
int maj;
|
|
|
|
/* locate the major number */
|
|
maj = cdevsw_lookup_major(&com_cdevsw);
|
|
|
|
/* Initialize required fields. */
|
|
cp->cn_dev = makedev(maj, 0);
|
|
cp->cn_pri = CN_NORMAL;
|
|
}
|
|
|
|
void
|
|
hd64465uartcninit(struct consdev *cp)
|
|
{
|
|
|
|
hd64465uart_init();
|
|
|
|
comcnattach(hd64465uart_chip.io_tag, 0x0, COMCN_SPEED, COM_FREQ,
|
|
COM_TYPE_NORMAL, CONMODE);
|
|
|
|
hd64465uart_chip.console = 1;
|
|
}
|
|
|
|
#ifdef KGDB
|
|
int
|
|
hd64465uart_kgdb_init()
|
|
{
|
|
|
|
if (strcmp(kgdb_devname, "hd64465uart") != 0)
|
|
return (1);
|
|
|
|
if (hd64465uart_chip.console)
|
|
return (1); /* can't share with console */
|
|
|
|
hd64465uart_init();
|
|
|
|
if (com_kgdb_attach(hd64465uart_chip.io_tag, 0x0, kgdb_rate,
|
|
COM_FREQ, COM_TYPE_NORMAL, CONMODE) != 0) {
|
|
printf("%s: KGDB console open failed.\n", __FUNCTION__);
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
#endif /* KGDB */
|
|
|
|
int
|
|
hd64465uart_match(struct device *parent, struct cfdata *cf, void *aux)
|
|
{
|
|
struct hd64465_attach_args *ha = aux;
|
|
|
|
return (ha->ha_module_id == HD64465_MODULE_UART);
|
|
}
|
|
|
|
void
|
|
hd64465uart_attach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
struct hd64465_attach_args *ha = aux;
|
|
struct hd64465uart_softc *sc = (struct hd64465uart_softc *)self;
|
|
struct com_softc *csc = &sc->sc_com;
|
|
|
|
sc->sc_chip = &hd64465uart_chip;
|
|
|
|
sc->sc_module_id = ha->ha_module_id;
|
|
|
|
if (!sc->sc_chip->console)
|
|
hd64465uart_init();
|
|
|
|
csc->sc_iot = sc->sc_chip->io_tag;
|
|
bus_space_map(csc->sc_iot, 0, 8, 0, &csc->sc_ioh);
|
|
csc->sc_iobase = 0;
|
|
csc->sc_frequency = COM_FREQ;
|
|
|
|
/* supply clock XXX notyet */
|
|
|
|
/* sanity check */
|
|
if (!comprobe1(csc->sc_iot, csc->sc_ioh)) {
|
|
printf(": device problem. don't attach.\n");
|
|
|
|
/* stop clock XXX notyet */
|
|
return;
|
|
}
|
|
|
|
com_attach_subr(csc);
|
|
|
|
/* register interrupt handler */
|
|
hd64465_intr_establish(HD64465_UART, IST_LEVEL, IPL_TTY,
|
|
comintr, self);
|
|
}
|
|
|
|
void
|
|
hd64465uart_init()
|
|
{
|
|
|
|
if (hd64465uart_chip.io_tag)
|
|
return;
|
|
|
|
hd64465uart_chip.io_tag = bus_space_create(
|
|
&hd64465uart_chip.__tag_body, "HD64465 UART I/O",
|
|
0xb0008000, 0); /* no extent */
|
|
|
|
/* override bus_space_read_1, bus_space_write_1 */
|
|
hd64465uart_chip.io_tag->hbs_r_1 = hd64465uart_read_1;
|
|
hd64465uart_chip.io_tag->hbs_w_1 = hd64465uart_write_1;
|
|
}
|
|
|
|
u_int8_t
|
|
hd64465uart_read_1(void *t, bus_space_handle_t h, bus_size_t ofs)
|
|
{
|
|
|
|
return *(__volatile__ u_int8_t *)(h + (ofs << 1));
|
|
}
|
|
|
|
void
|
|
hd64465uart_write_1(void *t, bus_space_handle_t h, bus_size_t ofs,
|
|
u_int8_t val)
|
|
{
|
|
|
|
*(__volatile__ u_int8_t *)(h + (ofs << 1)) = val;
|
|
}
|