sys/dev/ofisa/joy_ofisa.c

   1 /*      $NetBSD: joy_ofisa.c,v 1.13 2008/03/26 18:27:07 xtraeme Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1996, 1998 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: joy_ofisa.c,v 1.13 2008/03/26 18:27:07 xtraeme Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/device.h>
  39
  40 #include <sys/bus.h>
  41
  42 #include <dev/ofw/openfirm.h>
  43 #include <dev/isa/isavar.h>
  44 #include <dev/ofisa/ofisavar.h>
  45
  46 #include <dev/ic/joyvar.h>
  47
  48 #define JOY_NPORTS      1       /* XXX should be in a header file */
  49
  50 static int      joy_ofisa_match(device_t, cfdata_t, void *);
  51 static void     joy_ofisa_attach(device_t, device_t, void *);
  52
  53 CFATTACH_DECL_NEW(joy_ofisa, sizeof(struct joy_softc),
  54     joy_ofisa_match, joy_ofisa_attach, NULL, NULL);
  55
  56 static int
  57 joy_ofisa_match(device_t parent, cfdata_t match, void *aux)
  58 {
  59         struct ofisa_attach_args *aa = aux;
  60         static const char *const compatible_strings[] = {
  61                 "pnpPNP,b02f",                  /* generic joystick */
  62                 NULL,
  63         };
  64         int rv = 0;
  65
  66         if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
  67                 rv = 1;
  68         return rv;
  69 }
  70
  71 static void
  72 joy_ofisa_attach(device_t parent, device_t self, void *aux)
  73 {
  74         struct joy_softc *sc = device_private(self);
  75         struct ofisa_attach_args *aa = aux;
  76         struct ofisa_reg_desc reg;
  77         char *model = NULL;
  78         int n;
  79
  80         /*
  81          * We're living on an OFW.  We have to ask the OFW what our
  82          * register property looks like.
  83          *
  84          * We expect:
  85          *
  86          *      1 i/o register region
  87          */
  88
  89         n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
  90         if (n != 1) {
  91                 aprint_error(": error getting register data\n");
  92                 return;
  93         }
  94         if (reg.type != OFISA_REG_TYPE_IO) {
  95                 aprint_error(": register type not i/o\n");
  96                 return;
  97         }
  98         if (reg.len != JOY_NPORTS) {
  99                 aprint_error(": weird register size (%lu, expected %d)\n",
 100                     (unsigned long)reg.len, JOY_NPORTS);
 101                 return;
 102         }
 103
 104         sc->sc_iot = aa->iot;
 105         sc->sc_dev = self;
 106
 107         if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, &sc->sc_ioh)) {
 108                 aprint_error(": unable to map register space\n");
 109                 return;
 110         }
 111
 112         n = OF_getproplen(aa->oba.oba_phandle, "model");
 113         if (n > 0) {
 114                 model = alloca(n);
 115                 if (OF_getprop(aa->oba.oba_phandle, "model", model, n) != n)
 116                         model = NULL;   /* safe; alloca */
 117         }
 118         if (model != NULL)
 119                 aprint_normal(": %s", model);
 120         aprint_normal("\n");
 121
 122         joyattach(sc);
 123 }