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obio.c revision 1.1 
      1 /* $NetBSD: obio.c,v 1.1 2006/02/08 09:04:01 gdamore Exp $ */
      2 
      3 /*
      4  * Copyright 2002 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Simon Burge for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed for the NetBSD Project by
     20  *      Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #include <sys/cdefs.h>
     39 __KERNEL_RCSID(0, "$NetBSD: obio.c,v 1.1 2006/02/08 09:04:01 gdamore Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/device.h>
     44 
     45 #include <machine/bus.h>
     46 
     47 #include <mips/cache.h>
     48 #include <mips/cpuregs.h>
     49 
     50 #include <evbmips/alchemy/board.h>
     51 #include <evbmips/alchemy/obiovar.h>
     52 
     53 #include "locators.h"
     54 
     55 static int	obio_match(struct device *, struct cfdata *, void *);
     56 static void	obio_attach(struct device *, struct device *, void *);
     57 static int	obio_submatch(struct device *, struct cfdata *,
     58 			      const int *, void *);
     59 static int	obio_print(void *, const char *);
     60 
     61 CFATTACH_DECL(obio, sizeof(struct device),
     62     obio_match, obio_attach, NULL, NULL);
     63 
     64 /* There can be only one. */
     65 static int	obio_found = 0;
     66 
     67 static int
     68 obio_match(struct device *parent, struct cfdata *match, void *aux)
     69 {
     70 
     71 	if (obio_found)
     72 		return (0);
     73 
     74 	return (1);
     75 }
     76 
     77 static void
     78 obio_attach(struct device *parent, struct device *self, void *aux)
     79 {
     80 	struct obio_attach_args oa;
     81 	const struct obiodev *od;
     82 	const struct alchemy_board *board;
     83 
     84 	obio_found = 1;
     85 	printf("\n");
     86 
     87 	board = board_info();
     88 	for (od = board->ab_devices; od->od_name != NULL; od++) {
     89 		oa.oba_name = od->od_name;
     90 		oa.oba_addr = od->od_addr;
     91 		oa.oba_irq = od->od_irq;
     92 		(void) config_found_sm_loc(self, "obio", NULL, &oa, obio_print,
     93 		    obio_submatch);
     94 	}
     95 }
     96 
     97 static int
     98 obio_submatch(struct device *parent, struct cfdata *cf,
     99 	      const int *ldesc, void *aux)
    100 {
    101 	struct obio_attach_args *oa = aux;
    102 
    103 	if (cf->cf_loc[OBIOCF_ADDR] != OBIOCF_ADDR_DEFAULT &&
    104 	    cf->cf_loc[OBIOCF_ADDR] != oa->oba_addr)
    105 		return (0);
    106 
    107 	return (config_match(parent, cf, aux));
    108 }
    109 
    110 static int
    111 obio_print(void *aux, const char *pnp)
    112 {
    113 	struct obio_attach_args *oa = aux;
    114 
    115 	if (pnp)
    116 		aprint_normal("%s at %s", oa->oba_name, pnp);
    117 	if (oa->oba_addr != OBIOCF_ADDR_DEFAULT)
    118 		aprint_normal(" addr 0x%lx", oa->oba_addr);
    119 
    120 	return (UNCONF);
    121 }
    122