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sscom_s3c2800.c revision 1.8.12.1 
      1 /*	$NetBSD: sscom_s3c2800.c,v 1.8.12.1 2012/11/20 03:01:07 tls Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2002, 2003 Fujitsu Component Limited
      5  * Copyright (c) 2002, 2003 Genetec Corporation
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. Neither the name of The Fujitsu Component Limited nor the name of
     17  *    Genetec corporation may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
     21  * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     22  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     23  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     24  * DISCLAIMED.  IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC
     25  * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
     28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     29  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __KERNEL_RCSID(0, "$NetBSD: sscom_s3c2800.c,v 1.8.12.1 2012/11/20 03:01:07 tls Exp $");
     37 
     38 #include "opt_sscom.h"
     39 #include "opt_ddb.h"
     40 #include "opt_kgdb.h"
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/ioctl.h>
     45 #include <sys/select.h>
     46 #include <sys/tty.h>
     47 #include <sys/proc.h>
     48 #include <sys/conf.h>
     49 #include <sys/file.h>
     50 #include <sys/uio.h>
     51 #include <sys/kernel.h>
     52 #include <sys/syslog.h>
     53 #include <sys/types.h>
     54 #include <sys/device.h>
     55 #include <sys/malloc.h>
     56 #include <sys/timepps.h>
     57 #include <sys/vnode.h>
     58 
     59 #include <machine/intr.h>
     60 #include <sys/bus.h>
     61 
     62 #include <arm/s3c2xx0/s3c2800reg.h>
     63 #include <arm/s3c2xx0/s3c2800var.h>
     64 #include <arm/s3c2xx0/sscom_var.h>
     65 #include <sys/termios.h>
     66 
     67 static int sscom_match(device_t, cfdata_t, void *);
     68 static void sscom_attach(device_t, device_t, void *);
     69 
     70 CFATTACH_DECL_NEW(sscom, sizeof(struct sscom_softc), sscom_match,
     71     sscom_attach, NULL, NULL);
     72 
     73 const struct sscom_uart_info s3c2800_uart_config[] = {
     74 	/* UART 0 */
     75 	{
     76 		0,
     77 		S3C2800_INT_TXD0,
     78 		S3C2800_INT_RXD0,
     79 		S3C2800_INT_UERR0,
     80 		S3C2800_UART0_BASE,
     81 	},
     82 	/* UART 1 */
     83 	{
     84 		1,
     85 		S3C2800_INT_TXD1,
     86 		S3C2800_INT_RXD1,
     87 		S3C2800_INT_UERR1,
     88 		S3C2800_UART1_BASE,
     89 	},
     90 };
     91 
     92 static int
     93 sscom_match(device_t parent, cfdata_t cf, void *aux)
     94 {
     95 	struct s3c2xx0_attach_args *sa = aux;
     96 	int unit = sa->sa_index;
     97 
     98 	return unit == 0 || unit == 1;
     99 }
    100 
    101 static void
    102 sscom_attach(device_t parent, device_t self, void *aux)
    103 {
    104 	struct sscom_softc *sc = device_private(self);
    105 	struct s3c2xx0_attach_args *sa = aux;
    106 	int unit = sa->sa_index;
    107 	bus_addr_t iobase = s3c2800_uart_config[unit].iobase;
    108 
    109 	printf( ": UART%d addr=%lx", sa->sa_index, iobase );
    110 
    111 	sc->sc_dev = self;
    112 	sc->sc_iot = s3c2xx0_softc->sc_iot;
    113 	sc->sc_unit = unit;
    114 	sc->sc_frequency = s3c2xx0_softc->sc_pclk;
    115 
    116 	sc->sc_rx_irqno = S3C2800_INT_RXD0 + sa->sa_index;
    117 	sc->sc_tx_irqno = S3C2800_INT_TXD0 + sa->sa_index;
    118 
    119 	if (bus_space_map(sc->sc_iot, iobase, SSCOM_SIZE, 0, &sc->sc_ioh)) {
    120 		printf( ": failed to map registers\n" );
    121 		return;
    122 	}
    123 
    124 	printf("\n");
    125 
    126 	s3c2800_intr_establish(s3c2800_uart_config[unit].tx_int,
    127 	    IPL_SERIAL, IST_LEVEL, sscomtxintr, sc);
    128 	s3c2800_intr_establish(s3c2800_uart_config[unit].rx_int,
    129 	    IPL_SERIAL, IST_LEVEL, sscomrxintr, sc);
    130 	s3c2800_intr_establish(s3c2800_uart_config[unit].err_int,
    131 	    IPL_SERIAL, IST_LEVEL, sscomrxintr, sc);
    132 	sscom_disable_txrxint(sc);
    133 
    134 	sscom_attach_subr(sc);
    135 }
    136 
    137 
    138 
    139 int
    140 s3c2800_sscom_cnattach(bus_space_tag_t iot, int unit, int rate,
    141     int frequency, tcflag_t cflag)
    142 {
    143 	return sscom_cnattach(iot, s3c2800_uart_config + unit,
    144 	    rate, frequency, cflag);
    145 }
    146 
    147 #ifdef KGDB
    148 int
    149 s3c2800_sscom_kgdb_attach(bus_space_tag_t iot, int unit, int rate,
    150     int frequency, tcflag_t cflag)
    151 {
    152 	return sscom_kgdb_attach(iot, s3c2800_uart_config + unit,
    153 	    rate, frequency, cflag);
    154 }
    155 #endif /* KGDB */
    156