1 /* $NetBSD: obio.c,v 1.6 2021/08/07 16:18:51 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 1.6 2021/08/07 16:18:51 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
obio_match(device_t parent,cfdata_t match,void * aux)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
obio_attach(device_t parent,device_t self,void * aux)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 CFARGS(.submatch = obio_submatch));
93 }
94 }
95
96 static int
obio_submatch(device_t parent,cfdata_t cf,const int * ldesc,void * aux)97 obio_submatch(device_t parent, cfdata_t cf,
98 const int *ldesc, void *aux)
99 {
100 struct obio_attach_args *oa = aux;
101
102 if (cf->cf_loc[OBIOCF_ADDR] != OBIOCF_ADDR_DEFAULT &&
103 cf->cf_loc[OBIOCF_ADDR] != oa->oba_addr)
104 return (0);
105
106 return (config_match(parent, cf, aux));
107 }
108
109 static int
obio_print(void * aux,const char * pnp)110 obio_print(void *aux, const char *pnp)
111 {
112 struct obio_attach_args *oa = aux;
113
114 if (pnp)
115 aprint_normal("%s at %s", oa->oba_name, pnp);
116 if (oa->oba_addr != OBIOCF_ADDR_DEFAULT)
117 aprint_normal(" addr 0x%"PRIxBUSADDR, oa->oba_addr);
118
119 return (UNCONF);
120 }
121