sys/arch/i386/pnpbios/npx_pnpbios.c

   1 /*      $NetBSD: npx_pnpbios.c,v 1.11 2008/03/04 14:53:38 cube Exp $    */
   2
   3 /*-
   4  * Copyright (c) 2000 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 <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: npx_pnpbios.c,v 1.11 2008/03/04 14:53:38 cube Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/device.h>
  38
  39 #include <machine/bus.h>
  40 #include <machine/cpufunc.h>
  41 #include <machine/intr.h>
  42 #include <machine/specialreg.h>
  43
  44 #include <dev/isa/isareg.h>
  45 #include <dev/isa/isavar.h>
  46
  47 #include <i386/pnpbios/pnpbiosvar.h>
  48
  49 #include <i386/isa/npxvar.h>
  50
  51 int     npx_pnpbios_match(device_t, cfdata_t, void *);
  52 void    npx_pnpbios_attach(device_t, device_t, void *);
  53
  54 CFATTACH_DECL_NEW(npx_pnpbios, sizeof(struct npx_softc),
  55     npx_pnpbios_match, npx_pnpbios_attach, NULL, NULL);
  56
  57 int
  58 npx_pnpbios_match(device_t parent, cfdata_t match, void *aux)
  59 {
  60         struct pnpbiosdev_attach_args *aa = aux;
  61
  62         if (strcmp(aa->idstr, "PNP0C04"))
  63                 return (0);
  64
  65         return (1);
  66 }
  67
  68 void
  69 npx_pnpbios_attach(device_t parent, device_t self, void *aux)
  70 {
  71         struct npx_softc *sc = device_private(self);
  72         struct pnpbiosdev_attach_args *aa = aux;
  73         int irq, ist;
  74
  75         sc->sc_dev = self;
  76
  77         if (pnpbios_io_map(aa->pbt, aa->resc, 0, &sc->sc_iot, &sc->sc_ioh)) {
  78                 aprint_error(": can't map i/o space\n");
  79                 return;
  80         }
  81
  82         aprint_naive("\n");
  83         aprint_normal("\n");
  84         pnpbios_print_devres(self, aa);
  85
  86         if (pnpbios_getirqnum(aa->pbt, aa->resc, 0, &irq, &ist) != 0) {
  87                 aprint_error_dev(self, "unable to get IRQ number or type\n");
  88                 return;
  89         }
  90
  91         sc->sc_type = npxprobe1(sc->sc_iot, sc->sc_ioh, irq);
  92
  93         switch (sc->sc_type) {
  94         case NPX_INTERRUPT:
  95                 aprint_normal_dev(self, "interrupting at irq %d\n", irq);
  96                 lcr0(rcr0() & ~CR0_NE);
  97                 sc->sc_ih = isa_intr_establish(0/*XXX*/, irq, ist, IPL_NONE,
  98                      (int (*)(void *))npxintr, NULL);
  99                 break;
 100         case NPX_EXCEPTION:
 101                 /*FALLTHROUGH*/
 102         case NPX_CPUID:
 103                 aprint_verbose_dev(self, "%susing exception 16\n",
 104                     sc->sc_type == NPX_CPUID ? "reported by CPUID; " : "");
 105                 sc->sc_type = NPX_EXCEPTION;
 106                 break;
 107         case NPX_BROKEN:
 108                 aprint_error_dev(self, "error reporting broken; not using\n");
 109                 sc->sc_type = NPX_NONE;
 110                 return;
 111         case NPX_NONE:
 112                 panic("npx_pnpbios_attach");
 113         }
 114
 115         npxattach(sc);
 116 }