sys/arch/arm/s3c2xx0/sscom_s3c2800.c

   1 /*      $NetBSD: sscom_s3c2800.c,v 1.6 2005/12/11 12:16:51 christos 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 1.6 2005/12/11 12:16:51 christos 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 <machine/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(struct device *, struct cfdata *, void *);
  68 static void sscom_attach(struct device *, struct device *, void *);
  69
  70 CFATTACH_DECL(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(struct device *parent, struct cfdata *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(struct device *parent, struct device *self, void *aux)
 103 {
 104         struct sscom_softc *sc = (struct sscom_softc *)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_iot = s3c2xx0_softc->sc_iot;
 112         sc->sc_unit = unit;
 113         sc->sc_frequency = s3c2xx0_softc->sc_pclk;
 114
 115         sc->sc_rx_irqno = S3C2800_INT_RXD0 + sa->sa_index;
 116         sc->sc_tx_irqno = S3C2800_INT_TXD0 + sa->sa_index;
 117
 118         if (bus_space_map(sc->sc_iot, iobase, SSCOM_SIZE, 0, &sc->sc_ioh)) {
 119                 printf( ": failed to map registers\n" );
 120                 return;
 121         }
 122
 123         printf("\n");
 124
 125         s3c2800_intr_establish(s3c2800_uart_config[unit].tx_int,
 126             IPL_SERIAL, IST_LEVEL, sscomtxintr, sc);
 127         s3c2800_intr_establish(s3c2800_uart_config[unit].rx_int,
 128             IPL_SERIAL, IST_LEVEL, sscomrxintr, sc);
 129         s3c2800_intr_establish(s3c2800_uart_config[unit].err_int,
 130             IPL_SERIAL, IST_LEVEL, sscomrxintr, sc);
 131         sscom_disable_txrxint(sc);
 132
 133         sscom_attach_subr(sc);
 134 }
 135
 136
 137
 138 int
 139 s3c2800_sscom_cnattach(bus_space_tag_t iot, int unit, int rate,
 140     int frequency, tcflag_t cflag)
 141 {
 142         return sscom_cnattach(iot, s3c2800_uart_config + unit,
 143             rate, frequency, cflag);
 144 }
 145
 146 #ifdef KGDB
 147 int
 148 s3c2800_sscom_kgdb_attach(bus_space_tag_t iot, int unit, int rate,
 149     int frequency, tcflag_t cflag)
 150 {
 151         return sscom_kgdb_attach(iot, s3c2800_uart_config + unit,
 152             rate, frequency, cflag);
 153 }
 154 #endif /* KGDB */