sys/arch/evbppc/ev64260/com_obio.c

   1 /*      $NetBSD: com_obio.c,v 1.8 2008/04/28 20:23:17 martin Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*-
  33  * Copyright (c) 1991 The Regents of the University of California.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  *      @(#)com.c       7.5 (Berkeley) 5/16/91
  61  */
  62
  63 #include <sys/cdefs.h>
  64 __KERNEL_RCSID(0, "$NetBSD: com_obio.c,v 1.8 2008/04/28 20:23:17 martin Exp $");
  65
  66 #include <sys/param.h>
  67 #include <sys/systm.h>
  68 #include <sys/ioctl.h>
  69 #include <sys/select.h>
  70 #include <sys/tty.h>
  71 #include <sys/proc.h>
  72 #include <sys/conf.h>
  73 #include <sys/file.h>
  74 #include <sys/uio.h>
  75 #include <sys/kernel.h>
  76 #include <sys/syslog.h>
  77 #include <sys/types.h>
  78 #include <sys/device.h>
  79 #include <sys/termios.h>
  80
  81 #include <machine/bus.h>
  82 #include <machine/intr.h>
  83
  84 #include <dev/ic/comreg.h>
  85 #include <dev/ic/comvar.h>
  86
  87 #include <dev/marvell/gtvar.h>
  88
  89 struct com_obio_softc {
  90         struct com_softc osc_com;       /* real "com" softc */
  91
  92         /* OBIO-specific goo. */
  93 };
  94
  95 static int com_obio_match (device_t, cfdata_t , void *);
  96 static void com_obio_attach (device_t, device_t, void *);
  97
  98 CFATTACH_DECL_NEW(com_obio, sizeof(struct com_obio_softc),
  99     com_obio_match, com_obio_attach, NULL, NULL);
 100
 101 int
 102 com_obio_match(device_t parent, cfdata_t cf, void *aux)
 103 {
 104         struct obio_attach_args *oa = aux;
 105         bus_space_handle_t ioh;
 106         int rv = 0;
 107
 108         if (oa->oa_offset == OBIO_UNK_OFFSET ||
 109             oa->oa_size == OBIO_UNK_SIZE)
 110                 return (0);
 111
 112         if (com_is_console(oa->oa_memt, oa->oa_offset, NULL)) {
 113                 rv = 1;
 114         } else {
 115                 if (bus_space_map(oa->oa_memt, oa->oa_offset,
 116                     oa->oa_size, 0, &ioh))
 117                         return (0);
 118                 rv = comprobe1(oa->oa_memt, ioh);
 119                 bus_space_unmap(oa->oa_memt, ioh, oa->oa_size);
 120         }
 121
 122         return (rv);
 123 }
 124
 125 void
 126 com_obio_attach(device_t parent, device_t self, void *aux)
 127 {
 128         struct com_obio_softc *osc = device_private(self);
 129         struct com_softc *sc = &osc->osc_com;
 130         struct obio_attach_args *oa = aux;
 131         bus_space_handle_t ioh;
 132
 133         sc->sc_dev = self;
 134         sc->sc_frequency = COM_FREQ*2;
 135
 136         if (!com_is_console(oa->oa_memt, oa->oa_offset, &ioh) &&
 137             bus_space_map(oa->oa_memt, oa->oa_offset, oa->oa_size,
 138                 0, &ioh) != 0) {
 139                 aprint_error(": can't map registers\n");
 140                 return;
 141         }
 142
 143         COM_INIT_REGS(sc->sc_regs, oa->oa_memt, ioh, oa->oa_offset);
 144         sc->sc_regs.cr_nports = oa->oa_size;
 145         com_attach_subr(sc);
 146
 147         if (oa->oa_irq >= 0) {
 148                 intr_establish(oa->oa_irq, IST_EDGE, IPL_SERIAL, comintr, sc);
 149                 aprint_normal_dev(self, "interrupting at %s\n",
 150                     intr_string(oa->oa_irq));
 151         }
 152 }