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joy_ofisa.c revision 1.13 
      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  * 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: joy_ofisa.c,v 1.13 2008/03/26 18:27:07 xtraeme Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/kernel.h>
     45 #include <sys/device.h>
     46 
     47 #include <sys/bus.h>
     48 
     49 #include <dev/ofw/openfirm.h>
     50 #include <dev/isa/isavar.h>
     51 #include <dev/ofisa/ofisavar.h>
     52 
     53 #include <dev/ic/joyvar.h>
     54 
     55 #define	JOY_NPORTS	1	/* XXX should be in a header file */
     56 
     57 static int	joy_ofisa_match(device_t, cfdata_t, void *);
     58 static void	joy_ofisa_attach(device_t, device_t, void *);
     59 
     60 CFATTACH_DECL_NEW(joy_ofisa, sizeof(struct joy_softc),
     61     joy_ofisa_match, joy_ofisa_attach, NULL, NULL);
     62 
     63 static int
     64 joy_ofisa_match(device_t parent, cfdata_t match, void *aux)
     65 {
     66 	struct ofisa_attach_args *aa = aux;
     67 	static const char *const compatible_strings[] = {
     68 		"pnpPNP,b02f",			/* generic joystick */
     69 		NULL,
     70 	};
     71 	int rv = 0;
     72 
     73 	if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
     74 		rv = 1;
     75 	return rv;
     76 }
     77 
     78 static void
     79 joy_ofisa_attach(device_t parent, device_t self, void *aux)
     80 {
     81 	struct joy_softc *sc = device_private(self);
     82 	struct ofisa_attach_args *aa = aux;
     83 	struct ofisa_reg_desc reg;
     84 	char *model = NULL;
     85 	int n;
     86 
     87 	/*
     88 	 * We're living on an OFW.  We have to ask the OFW what our
     89 	 * register property looks like.
     90 	 *
     91 	 * We expect:
     92 	 *
     93 	 *	1 i/o register region
     94 	 */
     95 
     96 	n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
     97 	if (n != 1) {
     98 		aprint_error(": error getting register data\n");
     99 		return;
    100 	}
    101 	if (reg.type != OFISA_REG_TYPE_IO) {
    102 		aprint_error(": register type not i/o\n");
    103 		return;
    104 	}
    105 	if (reg.len != JOY_NPORTS) {
    106 		aprint_error(": weird register size (%lu, expected %d)\n",
    107 		    (unsigned long)reg.len, JOY_NPORTS);
    108 		return;
    109 	}
    110 
    111 	sc->sc_iot = aa->iot;
    112 	sc->sc_dev = self;
    113 
    114 	if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, &sc->sc_ioh)) {
    115 		aprint_error(": unable to map register space\n");
    116 		return;
    117 	}
    118 
    119 	n = OF_getproplen(aa->oba.oba_phandle, "model");
    120 	if (n > 0) {
    121 		model = alloca(n);
    122 		if (OF_getprop(aa->oba.oba_phandle, "model", model, n) != n)
    123 			model = NULL;	/* safe; alloca */
    124 	}
    125 	if (model != NULL)
    126 		aprint_normal(": %s", model);
    127 	aprint_normal("\n");
    128 
    129 	joyattach(sc);
    130 }
    131