sys/dev/isapnp/com_isapnp.c

   1 /*      $NetBSD: com_isapnp.c,v 1.28 2008/03/14 15:09:11 cube Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Michael Graff <explorer@flame.org>.
   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_isapnp.c,v 1.28 2008/03/14 15:09:11 cube Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/errno.h>
  38 #include <sys/ioctl.h>
  39 #include <sys/syslog.h>
  40 #include <sys/device.h>
  41 #include <sys/proc.h>
  42 #include <sys/termios.h>
  43
  44 #include <sys/bus.h>
  45
  46 #include <dev/isa/isavar.h>
  47 #include <dev/isa/isadmavar.h>
  48
  49 #include <dev/isapnp/isapnpreg.h>
  50 #include <dev/isapnp/isapnpvar.h>
  51 #include <dev/isapnp/isapnpdevs.h>
  52
  53 #include <dev/ic/comvar.h>
  54 #include <dev/ic/comreg.h>
  55
  56 struct com_isapnp_softc {
  57         struct  com_softc sc_com;       /* real "com" softc */
  58
  59         /* ISAPnP-specific goo. */
  60         void    *sc_ih;                 /* interrupt handler */
  61 };
  62
  63 int     com_isapnp_match(device_t, cfdata_t , void *);
  64 void    com_isapnp_attach(device_t, device_t, void *);
  65
  66 CFATTACH_DECL_NEW(com_isapnp, sizeof(struct com_isapnp_softc),
  67     com_isapnp_match, com_isapnp_attach, NULL, NULL);
  68
  69 int
  70 com_isapnp_match(device_t parent, cfdata_t match, void *aux)
  71 {
  72         int pri, variant;
  73
  74         pri = isapnp_devmatch(aux, &isapnp_com_devinfo, &variant);
  75         if (pri && variant > 0)
  76                 pri = 0;
  77         return (pri);
  78 }
  79
  80 void
  81 com_isapnp_attach(device_t parent, device_t self, void *aux)
  82 {
  83         struct com_isapnp_softc *isc = device_private(self);
  84         struct com_softc *sc = &isc->sc_com;
  85         struct isapnp_attach_args *ipa = aux;
  86
  87         sc->sc_dev = self;
  88
  89         if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
  90                 aprint_error_dev(self, "error in region allocation\n");
  91                 return;
  92         }
  93
  94         COM_INIT_REGS(sc->sc_regs, ipa->ipa_iot, ipa->ipa_io[0].h,
  95             ipa->ipa_io[0].base);
  96
  97         /*
  98          * if the chip isn't something we recognise skip it.
  99          */
 100         if (com_probe_subr(&sc->sc_regs) == 0)
 101                 return;
 102
 103         sc->sc_frequency = 115200 * 16; /* is that always right? */
 104
 105         com_attach_subr(sc);
 106
 107         isc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
 108             ipa->ipa_irq[0].type, IPL_SERIAL, comintr, sc);
 109 }