sys/arch/i386/pnpbios/com_pnpbios.c

   1 /* $NetBSD: com_pnpbios.c,v 1.13 2006/11/16 01:32:39 christos Exp $ */
   2 /*
   3  * Copyright (c) 1999
   4  *      Matthias Drochner.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions, and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __KERNEL_RCSID(0, "$NetBSD: com_pnpbios.c,v 1.13 2006/11/16 01:32:39 christos Exp $");
  30
  31 #include <sys/param.h>
  32 #include <sys/systm.h>
  33 #include <sys/errno.h>
  34 #include <sys/ioctl.h>
  35 #include <sys/syslog.h>
  36 #include <sys/device.h>
  37 #include <sys/proc.h>
  38 #include <sys/termios.h>
  39
  40 #include <machine/bus.h>
  41
  42 #include <dev/isa/isavar.h>
  43 #include <dev/isa/isadmavar.h>
  44
  45 #include <i386/pnpbios/pnpbiosvar.h>
  46
  47 #include <dev/ic/comvar.h>
  48
  49 struct com_pnpbios_softc {
  50         struct  com_softc sc_com;
  51         void    *sc_ih;
  52 };
  53
  54 int com_pnpbios_match(device_t, cfdata_t , void *);
  55 void com_pnpbios_attach(device_t, device_t, void *);
  56
  57 CFATTACH_DECL_NEW(com_pnpbios, sizeof(struct com_pnpbios_softc),
  58     com_pnpbios_match, com_pnpbios_attach, NULL, NULL);
  59
  60 int
  61 com_pnpbios_match(device_t parent, cfdata_t match, void *aux)
  62 {
  63         struct pnpbiosdev_attach_args *aa = aux;
  64
  65         if (strcmp(aa->idstr, "PNP0500") &&
  66             strcmp(aa->idstr, "PNP0501") &&
  67             strcmp(aa->idstr, "PNP0510") &&
  68             strcmp(aa->idstr, "PNP0511"))
  69                 return (0);
  70
  71         return (1);
  72 }
  73
  74 void
  75 com_pnpbios_attach(device_t parent, device_t self, void *aux)
  76 {
  77         struct com_pnpbios_softc *psc = device_private(self);
  78         struct com_softc *sc = &psc->sc_com;
  79         struct pnpbiosdev_attach_args *aa = aux;
  80         bus_space_tag_t iot;
  81         bus_space_handle_t ioh;
  82         int iobase;
  83
  84         sc->sc_dev = self;
  85
  86         if (pnpbios_getiobase(aa->pbt, aa->resc, 0, &iot, &iobase)) {
  87                 aprint_error(": can't get iobase\n");
  88                 return;
  89         }
  90
  91         if ((!com_is_console(iot, iobase, &ioh)) &&
  92             pnpbios_io_map(aa->pbt, aa->resc, 0, &iot, &ioh)) {
  93                 aprint_error(": can't map i/o space\n");
  94                 return;
  95         }
  96
  97         COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase);
  98
  99         aprint_normal("\n");
 100         pnpbios_print_devres(self, aa);
 101
 102         aprint_normal("%s", device_xname(self));
 103
 104         /*
 105          * if the chip isn't something we recognise skip it.
 106          */
 107         if (com_probe_subr(&sc->sc_regs) == 0) {
 108                 aprint_error(": com probe failed\n");
 109                 return;
 110         }
 111
 112         sc->sc_frequency = 115200 * 16;
 113
 114         com_attach_subr(sc);
 115
 116         psc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_SERIAL,
 117                                             comintr, sc);
 118 }