sys/arch/algor/dev/com_mainbus.c

   1 /*      $NetBSD: com_mainbus.c,v 1.11 2008/04/28 20:23:10 martin 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 Jason R. Thorpe.
   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 "opt_algor_p4032.h"
  33
  34 #include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */
  35
  36 __KERNEL_RCSID(0, "$NetBSD: com_mainbus.c,v 1.11 2008/04/28 20:23:10 martin Exp $");
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/ioctl.h>
  41 #include <sys/select.h>
  42 #include <sys/tty.h>
  43 #include <sys/proc.h>
  44 #include <sys/conf.h>
  45 #include <sys/file.h>
  46 #include <sys/uio.h>
  47 #include <sys/kernel.h>
  48 #include <sys/syslog.h>
  49 #include <sys/types.h>
  50 #include <sys/device.h>
  51
  52 #include <machine/autoconf.h>
  53 #include <machine/intr.h>
  54 #include <machine/bus.h>
  55
  56 #include <dev/ic/comreg.h>
  57 #include <dev/ic/comvar.h>
  58
  59 struct com_mainbus_softc {
  60         struct  com_softc sc_com;       /* real "com" softc */
  61
  62         /* mainbus-specific goo. */
  63         void    *sc_ih;                 /* interrupt handler */
  64 };
  65
  66 int     com_mainbus_match(device_t, cfdata_t , void *);
  67 void    com_mainbus_attach(device_t, device_t, void *);
  68 void    com_mainbus_cleanup(void *);
  69
  70 CFATTACH_DECL_NEW(com_mainbus, sizeof(struct com_mainbus_softc),
  71     com_mainbus_match, com_mainbus_attach, NULL, NULL);
  72
  73 int
  74 com_mainbus_match(device_t parent, cfdata_t match, void *aux)
  75 {
  76         struct mainbus_attach_args *ma = aux;
  77
  78         /* Always present. */
  79         if (strcmp(ma->ma_name, match->cf_name) == 0)
  80                 return (1);
  81
  82         return (0);
  83 }
  84
  85 void
  86 com_mainbus_attach(device_t parent, device_t self, void *aux)
  87 {
  88         struct com_mainbus_softc *msc = device_private(self);
  89         struct com_softc *sc = &msc->sc_com;
  90         struct mainbus_attach_args *ma = aux;
  91         bus_space_handle_t ioh;
  92
  93         sc->sc_dev = self;
  94         if (com_is_console(ma->ma_st, ma->ma_addr, &ioh) == 0 &&
  95             bus_space_map(ma->ma_st, ma->ma_addr, COM_NPORTS, 0, &ioh) != 0) {
  96                 aprint_error(": can't map i/o space\n");
  97                 return;
  98         }
  99         COM_INIT_REGS(sc->sc_regs, ma->ma_st, ioh, ma->ma_addr);
 100         sc->sc_frequency = COM_FREQ;
 101
 102         com_attach_subr(sc);
 103
 104         msc->sc_ih = (*algor_intr_establish)(ma->ma_irq, comintr, sc);
 105         if (msc->sc_ih == NULL) {
 106                 aprint_error_dev(self, "unable to establish interrupt\n");
 107                 return;
 108         }
 109
 110         if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) {
 111                 aprint_error_dev(self, "could not establish shutdown hook");
 112         }
 113
 114 }