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obio.c revision 1.5 
      1 /* $NetBSD: obio.c,v 1.5 2021/04/24 23:36:34 thorpej 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 1.5 2021/04/24 23:36:34 thorpej Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/device.h>
     44 
     45 #include <sys/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(device_t, cfdata_t, void *);
     56 static void	obio_attach(device_t, device_t, void *);
     57 static int	obio_submatch(device_t, cfdata_t, const int *, void *);
     58 static int	obio_print(void *, const char *);
     59 
     60 CFATTACH_DECL_NEW(obio, 0,
     61     obio_match, obio_attach, NULL, NULL);
     62 
     63 /* There can be only one. */
     64 static int	obio_found = 0;
     65 
     66 static int
     67 obio_match(device_t parent, cfdata_t match, void *aux)
     68 {
     69 
     70 	if (obio_found)
     71 		return (0);
     72 
     73 	return (1);
     74 }
     75 
     76 static void
     77 obio_attach(device_t parent, device_t self, void *aux)
     78 {
     79 	struct obio_attach_args oa;
     80 	const struct obiodev *od;
     81 	const struct alchemy_board *board;
     82 
     83 	obio_found = 1;
     84 	printf("\n");
     85 
     86 	board = board_info();
     87 	for (od = board->ab_devices; od->od_name != NULL; od++) {
     88 		oa.oba_name = od->od_name;
     89 		oa.oba_addr = od->od_addr;
     90 		oa.oba_irq = od->od_irq;
     91 		config_found(self, &oa, obio_print,
     92 		    CFARG_SUBMATCH, obio_submatch,
     93 		    CFARG_EOL);
     94 	}
     95 }
     96 
     97 static int
     98 obio_submatch(device_t parent, cfdata_t 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%"PRIxBUSADDR, oa->oba_addr);
    119 
    120 	return (UNCONF);
    121 }
    122