sys/dev/ic/com_cpcbus.c

   1 /*      $NetBSD: com_cpcbus.c,v 1.10 2008/03/14 15:09:11 cube Exp $     */
   2
   3 /*
   4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp.
   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_cpcbus.c,v 1.10 2008/03/14 15:09:11 cube Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/device.h>
  37 #include <sys/tty.h>
  38 #include <sys/systm.h>
  39
  40 #include <sys/bus.h>
  41
  42 #include <dev/ic/cpc700reg.h>
  43 #include <dev/ic/cpc700var.h>
  44
  45 #include <dev/ic/comreg.h>
  46 #include <dev/ic/comvar.h>
  47
  48 struct com_cpc_softc {
  49         struct com_softc sc_com;
  50         void *sc_ih;
  51 };
  52
  53 static int      com_cpc_match(device_t, cfdata_t , void *);
  54 static void     com_cpc_attach(device_t, device_t, void *);
  55
  56 CFATTACH_DECL_NEW(com_cpcbus, sizeof(struct com_cpc_softc),
  57     com_cpc_match, com_cpc_attach, NULL, NULL);
  58
  59 int
  60 com_cpc_match(device_t parent, cfdata_t cf, void *aux)
  61 {
  62         struct cpcbus_attach_args *caa = aux;
  63
  64         return (strcmp(caa->cpca_name, "com") == 0);
  65 }
  66
  67 void
  68 com_cpc_attach(device_t parent, device_t self, void *aux)
  69 {
  70         struct cpcbus_attach_args *caa = aux;
  71         struct com_cpc_softc *sc = device_private(self);
  72         int iobase = caa->cpca_addr;
  73         int irq = caa->cpca_irq;
  74         bus_space_handle_t ioh;
  75
  76         sc->sc_com.sc_dev = self;
  77
  78         if (!com_is_console(caa->cpca_tag, iobase, &ioh) &&
  79             bus_space_map(caa->cpca_tag, iobase, COM_NPORTS, 0, &ioh)) {
  80                 aprint_error_dev(self, "can't map i/o space\n");
  81                 return;
  82         }
  83         COM_INIT_REGS(sc->sc_com.sc_regs, caa->cpca_tag, ioh, iobase);
  84
  85         sc->sc_com.sc_frequency = CPC_COM_SPEED(caa->cpca_freq);
  86
  87         com_attach_subr(&sc->sc_com);
  88
  89         sc->sc_ih = intr_establish(irq, IST_LEVEL, IPL_SERIAL, comintr,
  90                                    &sc->sc_com);
  91 }