sys/arch/i386/isa/npx_isa.c

   1 /*      $NetBSD: npx_isa.c,v 1.20 2009/04/02 00:09:32 dyoung Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1991 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)npx.c       7.2 (Berkeley) 5/12/91
  32  */
  33
  34 /*-
  35  * Copyright (c) 1994, 1995, 1998 Charles M. Hannum.  All rights reserved.
  36  * Copyright (c) 1990 William Jolitz.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgement:
  48  *      This product includes software developed by the University of
  49  *      California, Berkeley and its contributors.
  50  * 4. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  *
  66  *      @(#)npx.c       7.2 (Berkeley) 5/12/91
  67  */
  68
  69 #include <sys/cdefs.h>
  70 __KERNEL_RCSID(0, "$NetBSD: npx_isa.c,v 1.20 2009/04/02 00:09:32 dyoung Exp $");
  71
  72 #include <sys/param.h>
  73 #include <sys/systm.h>
  74 #include <sys/device.h>
  75
  76 #include <machine/bus.h>
  77 #include <machine/cpufunc.h>
  78 #include <machine/intr.h>
  79 #include <machine/specialreg.h>
  80
  81 #include <dev/isa/isareg.h>
  82 #include <dev/isa/isavar.h>
  83
  84 #include <i386/isa/npxvar.h>
  85
  86 int npx_isa_probe(device_t, cfdata_t, void *);
  87 void npx_isa_attach(device_t, device_t, void *);
  88
  89 CFATTACH_DECL3_NEW(npx_isa, sizeof(struct npx_softc),
  90     npx_isa_probe, npx_isa_attach, npxdetach, NULL, NULL, NULL,
  91     DVF_DETACH_SHUTDOWN);
  92
  93 int
  94 npx_isa_probe(device_t parent, cfdata_t match, void *aux)
  95 {
  96         struct isa_attach_args *ia = aux;
  97         bus_space_handle_t ioh;
  98         enum npx_type result;
  99
 100         if (ia->ia_nio < 1)
 101                 return (0);
 102         if (ia->ia_nirq < 1)
 103                 return (0);
 104
 105         if (ISA_DIRECT_CONFIG(ia))
 106                 return (0);
 107
 108         if (bus_space_map(ia->ia_iot, 0xf0, 16, 0, &ioh) != 0)
 109                 return (0);
 110
 111         result = npxprobe1(ia->ia_iot, ioh, ia->ia_irq[0].ir_irq);
 112
 113         bus_space_unmap(ia->ia_iot, ioh, 16);
 114
 115         if (result != NPX_NONE) {
 116                 /*
 117                  * Remember our result -- we don't want to have to npxprobe1()
 118                  * again (especially if we've zapped the IRQ).
 119                  */
 120                 ia->ia_aux = (void *)(intptr_t)result;
 121
 122                 ia->ia_nio = 1;
 123                 ia->ia_io[0].ir_addr = 0xf0;
 124                 ia->ia_io[0].ir_size = 16;
 125
 126                 if (result != NPX_INTERRUPT)
 127                         ia->ia_nirq = 0;        /* zap the interrupt */
 128                 else
 129                         ia->ia_nirq = 1;
 130
 131                 ia->ia_niomem = 0;
 132                 ia->ia_ndrq = 0;
 133                 return (1);
 134         }
 135
 136         return (0);
 137 }
 138
 139 void
 140 npx_isa_attach(device_t parent, device_t self, void *aux)
 141 {
 142         struct npx_softc *sc = device_private(self);
 143         struct isa_attach_args *ia = aux;
 144
 145         aprint_naive("\n");
 146         aprint_normal("\n");
 147
 148         sc->sc_dev = self;
 149         sc->sc_type = (u_long) ia->ia_aux;
 150
 151         switch (sc->sc_type) {
 152         case NPX_INTERRUPT:
 153                 sc->sc_iot = ia->ia_iot;
 154                 if (bus_space_map(sc->sc_iot, 0xf0, 16, 0, &sc->sc_ioh))
 155                         panic("%s: unable to map I/O space", __func__);
 156                 lcr0(rcr0() & ~CR0_NE);
 157                 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
 158                     IST_EDGE, IPL_NONE, (int (*)(void *))npxintr, 0);
 159                 break;
 160         case NPX_EXCEPTION:
 161                 /*FALLTHROUGH*/
 162         case NPX_CPUID:
 163                 aprint_verbose_dev(sc->sc_dev, "%s using exception 16\n",
 164                     sc->sc_type == NPX_CPUID ? "reported by CPUID;" : "");
 165                 sc->sc_type = NPX_EXCEPTION;
 166                 break;
 167         case NPX_BROKEN:
 168                 aprint_error_dev(sc->sc_dev,
 169                     "error reporting broken; not using\n");
 170                 sc->sc_type = NPX_NONE;
 171                 return;
 172         case NPX_NONE:
 173                 return;
 174         }
 175
 176         npxattach(sc);
 177 }
 178