sys/arch/arc/jazz/com_jazzio.c

   1 /*      $NetBSD: com_jazzio.c,v 1.10 2008/03/14 15:09:09 cube Exp $     */
   2 /*      $OpenBSD: com_lbus.c,v 1.7 1998/03/16 09:38:41 pefo Exp $       */
   3 /*      NetBSD: com_isa.c,v 1.12 1998/08/15 17:47:17 mycroft Exp        */
   4
   5 /*-
   6  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   7  * All rights reserved.
   8  *
   9  * This code is derived from software contributed to The NetBSD Foundation
  10  * by Charles M. Hannum.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 /*-
  35  * Copyright (c) 1991 The Regents of the University of California.
  36  * All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)com.c       7.5 (Berkeley) 5/16/91
  63  */
  64
  65 #include <sys/cdefs.h>
  66 __KERNEL_RCSID(0, "$NetBSD: com_jazzio.c,v 1.10 2008/03/14 15:09:09 cube Exp $");
  67
  68 #include <sys/param.h>
  69 #include <sys/systm.h>
  70 #include <sys/device.h>
  71 #include <sys/tty.h>
  72
  73 #include <machine/autoconf.h>
  74 #include <machine/bus.h>
  75 #include <machine/intr.h>
  76
  77 #include <arc/jazz/jazziovar.h>
  78
  79 #include <dev/isa/isavar.h>     /* XXX for isa_chipset_tag_t in com_softc */
  80
  81 #include <dev/ic/comreg.h>
  82 #include <dev/ic/comvar.h>
  83 #include <dev/ic/ns16550reg.h>
  84
  85 extern int com_freq;
  86
  87 int     com_jazzio_probe(device_t, cfdata_t , void *);
  88 void    com_jazzio_attach(device_t, device_t, void *);
  89
  90 CFATTACH_DECL_NEW(com_jazzio, sizeof(struct com_softc),
  91     com_jazzio_probe, com_jazzio_attach, NULL, NULL);
  92
  93 int
  94 com_jazzio_probe(device_t parent, cfdata_t match, void *aux)
  95 {
  96         struct jazzio_attach_args *ja = aux;
  97         bus_space_tag_t iot;
  98         bus_space_handle_t ioh;
  99         int iobase;
 100         int rv = 1;
 101
 102         if (strcmp(ja->ja_name, "COM1") != 0 &&
 103             strcmp(ja->ja_name, "COM2") != 0)
 104                 return 0;
 105
 106         iot = ja->ja_bust;
 107         iobase = ja->ja_addr;
 108
 109         /* if it's in use as console, it's there. */
 110         if (!com_is_console(iot, iobase, 0)) {
 111                 if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
 112                         return 0;
 113                 }
 114                 rv = comprobe1(iot, ioh);
 115                 bus_space_unmap(iot, ioh, COM_NPORTS);
 116         }
 117         return rv;
 118 }
 119
 120 void
 121 com_jazzio_attach(device_t parent, device_t self, void *aux)
 122 {
 123         struct jazzio_attach_args *ja = aux;
 124         struct com_softc *sc = device_private(self);
 125         int iobase;
 126         bus_space_tag_t iot;
 127         bus_space_handle_t ioh;
 128
 129         sc->sc_dev = self;
 130         iobase = ja->ja_addr;
 131         iot = ja->ja_bust;
 132
 133         if (!com_is_console(iot, iobase, &ioh) &&
 134             bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
 135                 aprint_error(": can't map i/o space\n");
 136                 return;
 137         }
 138         COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase);
 139         sc->sc_frequency = com_freq;
 140         SET(sc->sc_hwflags, COM_HW_TXFIFO_DISABLE); /* XXX - NEC M403 */
 141         jazzio_intr_establish(ja->ja_intr, comintr, sc);
 142
 143         com_attach_subr(sc);
 144 }