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elb.c revision 1.2 
      1 /*	$NetBSD: elb.c,v 1.2 2003/07/15 01:37:36 lukem Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Juergen Hannken-Illjes.
      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: elb.c,v 1.2 2003/07/15 01:37:36 lukem Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/conf.h>
     44 #include <sys/device.h>
     45 #include <sys/systm.h>
     46 
     47 #include <machine/explora.h>
     48 #define _IBM4XX_BUS_DMA_PRIVATE
     49 #include <machine/bus.h>
     50 
     51 #include <powerpc/ibm4xx/dcr403cgx.h>
     52 
     53 #include <evbppc/explora/dev/elbvar.h>
     54 
     55 struct elb_dev {
     56 	const char *elb_name;
     57 	int elb_addr;
     58 	int elb_addr2;
     59 	int elb_irq;
     60 };
     61 
     62 static int	elb_match(struct device *, struct cfdata *, void *);
     63 static void	elb_attach(struct device *, struct device *, void *);
     64 static int	elb_print(void *, const char *);
     65 
     66 static struct elb_dev elb_devs[] = {
     67 	{ "cpu",	0,		0,		-1 },
     68 	{ "pckbc",	BASE_PCKBC,	BASE_PCKBC2,	31 },
     69 	{ "com",	BASE_COM,	0,		30 },
     70 	{ "lpt",	BASE_LPT,	0,		-1 },
     71 	{ "fb",		BASE_FB,	BASE_FB2,	-1 },
     72 	{ "le",		BASE_LE,	0,		28 },
     73 };
     74 
     75 CFATTACH_DECL(elb, sizeof(struct device),
     76     elb_match, elb_attach, NULL, NULL);
     77 
     78 /*
     79  * Probe for the elb; always succeeds.
     80  */
     81 static int
     82 elb_match(struct device *parent, struct cfdata *cf, void *aux)
     83 {
     84 	return (1);
     85 }
     86 
     87 /*
     88  * Attach the Explora local bus.
     89  */
     90 static void
     91 elb_attach(struct device *parent, struct device *self, void *aux)
     92 {
     93 	struct elb_attach_args eaa;
     94 	int i;
     95 
     96 	printf("\n");
     97 	for (i = 0; i < sizeof(elb_devs)/sizeof(elb_devs[0]); i++) {
     98 		eaa.elb_name = elb_devs[i].elb_name;
     99 		eaa.elb_bt = MAKE_BUS_TAG(elb_devs[i].elb_addr);
    100 		eaa.elb_dmat = &ibm4xx_default_bus_dma_tag;
    101 		eaa.elb_base = elb_devs[i].elb_addr;
    102 		eaa.elb_base2 = elb_devs[i].elb_addr2;
    103 		eaa.elb_irq = elb_devs[i].elb_irq;
    104 
    105 		(void) config_found_sm(self, &eaa, elb_print, NULL);
    106 	}
    107 }
    108 
    109 static int
    110 elb_print(void *aux, const char *pnp)
    111 {
    112 	struct elb_attach_args *eaa = aux;
    113 
    114 	if (pnp)
    115 		aprint_normal("%s at %s", eaa->elb_name, pnp);
    116 	if (eaa->elb_irq != -1)
    117 		aprint_normal(" irq %d", eaa->elb_irq);
    118 
    119 	return (UNCONF);
    120 }
    121