sys/dev/isapnp/com_isapnp.c

   1 /*      $NetBSD: com_isapnp.c,v 1.26 2006/11/16 01:33:05 christos 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  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *        This product includes software developed by the NetBSD
  21  *        Foundation, Inc. and its contributors.
  22  * 4. Neither the name of The NetBSD Foundation nor the names of its
  23  *    contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  * POSSIBILITY OF SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 __KERNEL_RCSID(0, "$NetBSD: com_isapnp.c,v 1.26 2006/11/16 01:33:05 christos Exp $");
  41
  42 #include <sys/param.h>
  43 #include <sys/systm.h>
  44 #include <sys/errno.h>
  45 #include <sys/ioctl.h>
  46 #include <sys/syslog.h>
  47 #include <sys/device.h>
  48 #include <sys/proc.h>
  49 #include <sys/termios.h>
  50
  51 #include <sys/bus.h>
  52
  53 #include <dev/isa/isavar.h>
  54 #include <dev/isa/isadmavar.h>
  55
  56 #include <dev/isapnp/isapnpreg.h>
  57 #include <dev/isapnp/isapnpvar.h>
  58 #include <dev/isapnp/isapnpdevs.h>
  59
  60 #include <dev/ic/comvar.h>
  61 #include <dev/ic/comreg.h>
  62
  63 struct com_isapnp_softc {
  64         struct  com_softc sc_com;       /* real "com" softc */
  65
  66         /* ISAPnP-specific goo. */
  67         void    *sc_ih;                 /* interrupt handler */
  68 };
  69
  70 int     com_isapnp_match(struct device *, struct cfdata *, void *);
  71 void    com_isapnp_attach(struct device *, struct device *, void *);
  72
  73 CFATTACH_DECL(com_isapnp, sizeof(struct com_isapnp_softc),
  74     com_isapnp_match, com_isapnp_attach, NULL, NULL);
  75
  76 int
  77 com_isapnp_match(struct device *parent, struct cfdata *match,
  78     void *aux)
  79 {
  80         int pri, variant;
  81
  82         pri = isapnp_devmatch(aux, &isapnp_com_devinfo, &variant);
  83         if (pri && variant > 0)
  84                 pri = 0;
  85         return (pri);
  86 }
  87
  88 void
  89 com_isapnp_attach(struct device *parent, struct device *self,
  90     void *aux)
  91 {
  92         struct com_isapnp_softc *isc = device_private(self);
  93         struct com_softc *sc = &isc->sc_com;
  94         struct isapnp_attach_args *ipa = aux;
  95
  96         if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
  97                 printf("%s: error in region allocation\n",
  98                        sc->sc_dev.dv_xname);
  99                 return;
 100         }
 101
 102         COM_INIT_REGS(sc->sc_regs, ipa->ipa_iot, ipa->ipa_io[0].h,
 103             ipa->ipa_io[0].base);
 104
 105         /*
 106          * if the chip isn't something we recognise skip it.
 107          */
 108         if (com_probe_subr(&sc->sc_regs) == 0)
 109                 return;
 110
 111         sc->sc_frequency = 115200 * 16; /* is that always right? */
 112
 113         com_attach_subr(sc);
 114
 115         isc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
 116             ipa->ipa_irq[0].type, IPL_SERIAL, comintr, sc);
 117 }