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joy_ofisa.c revision 1.13.4.1 
      1 /*	$NetBSD: joy_ofisa.c,v 1.13.4.1 2008/05/16 02:24:42 yamt 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 1.13.4.1 2008/05/16 02:24:42 yamt 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 }
    124