sys/arch/evbarm/iq80321/com_obio.c

   1 /*      $NetBSD: com_obio.c,v 1.11 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 1.11 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 <arm/xscale/i80321var.h>
  43
  44 #include <evbarm/iq80321/obiovar.h>
  45
  46 #include <dev/ic/comreg.h>
  47 #include <dev/ic/comvar.h>
  48
  49 struct com_obio_softc {
  50         struct com_softc sc_com;
  51
  52         void *sc_ih;
  53 };
  54
  55 int     com_obio_match(device_t, cfdata_t , void *);
  56 void    com_obio_attach(device_t, device_t, void *);
  57
  58 CFATTACH_DECL_NEW(com_obio, sizeof(struct com_obio_softc),
  59     com_obio_match, com_obio_attach, NULL, NULL);
  60
  61 int
  62 com_obio_match(device_t parent, cfdata_t cf, void *aux)
  63 {
  64
  65         /* We take it on faith that the device is there. */
  66         return (1);
  67 }
  68
  69 void
  70 com_obio_attach(device_t parent, device_t self, void *aux)
  71 {
  72         struct obio_attach_args *oba = aux;
  73         struct com_obio_softc *osc = device_private(self);
  74         struct com_softc *sc = &osc->sc_com;
  75         bus_space_handle_t ioh;
  76         int error;
  77
  78         sc->sc_dev = self;
  79         sc->sc_frequency = COM_FREQ;
  80         sc->sc_hwflags = COM_HW_NO_TXPRELOAD;
  81         error = bus_space_map(oba->oba_st, oba->oba_addr, 8, 0, &ioh);
  82
  83         if (error) {
  84                 aprint_error(": failed to map registers: %d\n", error);
  85                 return;
  86         }
  87         COM_INIT_REGS(sc->sc_regs, oba->oba_st, ioh, oba->oba_addr);
  88
  89         com_attach_subr(sc);
  90
  91         osc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_SERIAL,
  92             comintr, sc);
  93         if (osc->sc_ih == NULL)
  94                 aprint_error_dev(self,
  95                     "unable to establish interrupt at irq %d\n", oba->oba_irq);
  96 }