arm/s3c2xx0/sscom_s3c2800.c

/*	$NetBSD: sscom_s3c2800.c,v 1.2 2003/05/12 07:49:10 bsh Exp $ */

/*
 * Copyright (c) 2002 Fujitsu Component Limited
 * Copyright (c) 2002 Genetec Corporation
 * 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 Fujitsu Component Limited nor the name of
 *    Genetec corporation may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
 * CORPORATION ``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 FUJITSU COMPONENT LIMITED OR GENETEC
 * CORPORATION 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 "opt_sscom.h"
#include "opt_ddb.h"
#include "opt_kgdb.h"

#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 <sys/malloc.h>
#include <sys/timepps.h>
#include <sys/vnode.h>

#include <machine/intr.h>
#include <machine/bus.h>

#include <arm/s3c2xx0/s3c2800reg.h>
#include <arm/s3c2xx0/s3c2800var.h>
#include <arm/s3c2xx0/sscom_var.h>
#include <sys/termios.h>

#ifndef SSCOM_FREQ
#define SSCOM_FREQ 50000000
#endif

static int sscom_match(struct device *, struct cfdata *, void *);
static void sscom_attach(struct device *, struct device *, void *);

CFATTACH_DECL(sscom, sizeof(struct sscom_softc), sscom_match,
    sscom_attach, NULL, NULL);

const struct sscom_uart_info s3c2800_uart_config[] = {
	/* UART 0 */
	{
		0,
		S3C2800_INT_TXD0,
		S3C2800_INT_RXD0,
		S3C2800_INT_UERR0,
		S3C2800_UART0_BASE,
	},
	/* UART 1 */
	{
		1,
		S3C2800_INT_TXD1,
		S3C2800_INT_RXD1,
		S3C2800_INT_UERR1,
		S3C2800_UART1_BASE,
	},
};

static int
sscom_match(struct device * parent, struct cfdata * cf, void *aux)
{
	struct s3c2xx0_attach_args *sa = aux;
	int unit = sa->sa_index;

	return unit == 0 || unit == 1;
}

#if 0
int tx_int(void *);
int rx_int(void *);
int err_int(void *);

int
tx_int(void *arg)
{
	return sscomintr(arg);
}

int
rx_int(void *arg)
{
	return sscomintr(arg);
}

int
err_int(void *arg)
{
	return sscomintr(arg);
}
#endif

static void
sscom_attach(struct device * parent, struct device * self, void *aux)
{
	struct sscom_softc *sc = (struct sscom_softc *) self;
	struct s3c2xx0_attach_args *sa = aux;
	int unit = sa->sa_index;
	bus_addr_t iobase = s3c2800_uart_config[unit].iobase;


	printf(": UART%d addr=%lx", sa->sa_index, iobase);

	sc->sc_iot = s3c2xx0_softc->sc_iot;
	sc->sc_unit = unit;
	sc->sc_frequency = SSCOM_FREQ;

	sc->sc_rx_irqno = S3C2800_INT_RXD0 + sa->sa_index;
	sc->sc_tx_irqno = S3C2800_INT_TXD0 + sa->sa_index;

	if (bus_space_map(sc->sc_iot, iobase, SSCOM_SIZE, 0, &sc->sc_ioh)) {
		printf(": failed to map registers\n");
		return;
	}
	printf("\n");

	s3c2800_intr_establish(s3c2800_uart_config[unit].tx_int,
	    IPL_SERIAL, IST_LEVEL, sscomintr, sc);
	s3c2800_intr_establish(s3c2800_uart_config[unit].rx_int,
	    IPL_SERIAL, IST_LEVEL, sscomintr, sc);
	s3c2800_intr_establish(s3c2800_uart_config[unit].err_int,
	    IPL_SERIAL, IST_LEVEL, sscomintr, sc);

	sscom_disable_txrxint(sc);

	sscom_attach_subr(sc);
}


int
s3c2800_sscom_cnattach(bus_space_tag_t iot, int unit, int rate,
    int frequency, tcflag_t cflag)
{
	return sscom_cnattach(iot, s3c2800_uart_config + unit,
	    rate, frequency, cflag);
}
#ifdef KGDB
int
s3c2800_sscom_kgdb_attach(bus_space_tag_t iot, int unit, int rate,
			  int frequency, tcflag_t cflag)
{
	return sscom_kgdb_attach(iot, s3c2800_uart_config + unit,
	    rate, frequency, cflag);
}
#endif				/* KGDB */