sys/arch/evbarm/iq80310/com_obio.c

   1 /*      $NetBSD: com_obio.c,v 1.12 2008/03/14 15:09:09 cube Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Matt Thomas <matt@3am-software.com>.
   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 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: com_obio.c,v 1.12 2008/03/14 15:09:09 cube Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/device.h>
  38 #include <sys/termios.h>
  39
  40 #include <machine/bus.h>
  41
  42 #include <evbarm/iq80310/iq80310var.h>
  43 #include <evbarm/iq80310/obiovar.h>
  44
  45 #include <dev/ic/comreg.h>
  46 #include <dev/ic/comvar.h>
  47
  48 struct com_obio_softc {
  49         struct com_softc sc_com;
  50
  51         void *sc_ih;
  52 };
  53
  54 int     com_obio_match(device_t, cfdata_t , void *);
  55 void    com_obio_attach(device_t, device_t, void *);
  56
  57 CFATTACH_DECL_NEW(com_obio, sizeof(struct com_obio_softc),
  58     com_obio_match, com_obio_attach, NULL, NULL);
  59
  60 int
  61 com_obio_match(device_t parent, cfdata_t cf, void *aux)
  62 {
  63
  64         /* We take it on faith that the device is there. */
  65         return (1);
  66 }
  67
  68 void
  69 com_obio_attach(device_t parent, device_t self, void *aux)
  70 {
  71         struct obio_attach_args *oba = aux;
  72         struct com_obio_softc *osc = device_private(self);
  73         struct com_softc *sc = &osc->sc_com;
  74         bus_space_handle_t ioh;
  75         int error;
  76
  77         sc->sc_dev = self;
  78         sc->sc_frequency = COM_FREQ;
  79         sc->sc_hwflags = COM_HW_NO_TXPRELOAD;
  80         error = bus_space_map(oba->oba_st, oba->oba_addr, 8, 0, &ioh);
  81
  82         if (error) {
  83                 aprint_error(": failed to map registers: %d\n", error);
  84                 return;
  85         }
  86         COM_INIT_REGS(sc->sc_regs, oba->oba_st, ioh, oba->oba_addr);
  87         com_attach_subr(sc);
  88
  89         osc->sc_ih = iq80310_intr_establish(oba->oba_irq, IPL_SERIAL,
  90             comintr, sc);
  91         if (osc->sc_ih == NULL)
  92                 aprint_error_dev(self,
  93                     "unable to establish interrupt at CPLD irq %d\n",
  94                     oba->oba_irq);
  95 }