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sscom_s3c2410.c revision 1.6 
      1 /*	$NetBSD: sscom_s3c2410.c,v 1.6 2012/10/27 17:17:40 chs 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_s3c2410.c,v 1.6 2012/10/27 17:17:40 chs 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/s3c2410reg.h>
     63 #include <arm/s3c2xx0/s3c2410var.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 s3c2410_uart_config[] = {
     74 	/* UART 0 */
     75 	{
     76 		0,
     77 		S3C2410_INT_TXD0,
     78 		S3C2410_INT_RXD0,
     79 		S3C2410_INT_ERR0,
     80 		S3C2410_UART_BASE(0),
     81 	},
     82 	/* UART 1 */
     83 	{
     84 		1,
     85 		S3C2410_INT_TXD1,
     86 		S3C2410_INT_RXD1,
     87 		S3C2410_INT_ERR1,
     88 		S3C2410_UART_BASE(1),
     89 	},
     90 	/* UART 2 */
     91 	{
     92 		2,
     93 		S3C2410_INT_TXD2,
     94 		S3C2410_INT_RXD2,
     95 		S3C2410_INT_ERR2,
     96 		S3C2410_UART_BASE(2),
     97 	},
     98 };
     99 
    100 static int
    101 sscom_match(device_t parent, cfdata_t cf, void *aux)
    102 {
    103 	struct s3c2xx0_attach_args *sa = aux;
    104 	int unit = sa->sa_index;
    105 
    106 	return unit == 0 || unit == 1;
    107 }
    108 
    109 static void
    110 sscom_attach(device_t parent, device_t self, void *aux)
    111 {
    112 	struct sscom_softc *sc = device_private(self);
    113 	struct s3c2xx0_attach_args *sa = aux;
    114 	int unit = sa->sa_index;
    115 	bus_addr_t iobase = s3c2410_uart_config[unit].iobase;
    116 
    117 	printf( ": UART%d addr=%lx", sa->sa_index, iobase );
    118 
    119 	sc->sc_dev = self;
    120 	sc->sc_iot = s3c2xx0_softc->sc_iot;
    121 	sc->sc_unit = unit;
    122 	sc->sc_frequency = s3c2xx0_softc->sc_pclk;
    123 
    124 	sc->sc_rx_irqno = s3c2410_uart_config[sa->sa_index].rx_int;
    125 	sc->sc_tx_irqno = s3c2410_uart_config[sa->sa_index].tx_int;
    126 
    127 	if (bus_space_map(sc->sc_iot, iobase, SSCOM_SIZE, 0, &sc->sc_ioh)) {
    128 		printf( ": failed to map registers\n" );
    129 		return;
    130 	}
    131 
    132 	printf("\n");
    133 
    134 	s3c24x0_intr_establish(s3c2410_uart_config[unit].tx_int,
    135 	    IPL_SERIAL, IST_LEVEL, sscomtxintr, sc);
    136 	s3c24x0_intr_establish(s3c2410_uart_config[unit].rx_int,
    137 	    IPL_SERIAL, IST_LEVEL, sscomrxintr, sc);
    138 	s3c24x0_intr_establish(s3c2410_uart_config[unit].err_int,
    139 	    IPL_SERIAL, IST_LEVEL, sscomrxintr, sc);
    140 	sscom_disable_txrxint(sc);
    141 
    142 	sscom_attach_subr(sc);
    143 }
    144 
    145 
    146 
    147 int
    148 s3c2410_sscom_cnattach(bus_space_tag_t iot, int unit, int rate,
    149     int frequency, tcflag_t cflag)
    150 {
    151 	return sscom_cnattach(iot, s3c2410_uart_config + unit,
    152 	    rate, frequency, cflag);
    153 }
    154 
    155 #ifdef KGDB
    156 int
    157 s3c2410_sscom_kgdb_attach(bus_space_tag_t iot, int unit, int rate,
    158     int frequency, tcflag_t cflag)
    159 {
    160 	return sscom_kgdb_attach(iot, s3c2410_uart_config + unit,
    161 	    rate, frequency, cflag);
    162 }
    163 #endif /* KGDB */
    164