1 /* $NetBSD: obio.c,v 1.18 2021/08/07 16:18:49 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe 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 /*
39 * On-board device autoconfiguration support for Intel IQ80321
40 * evaluation boards.
41 */
42
43 #include <sys/cdefs.h>
44 __KERNEL_RCSID(0, "$NetBSD: obio.c,v 1.18 2021/08/07 16:18:49 thorpej Exp $");
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/device.h>
49
50 #include <machine/autoconf.h>
51 #include <sys/bus.h>
52
53 #include <arm/xscale/i80321reg.h>
54
55 #include <evbarm/iq80321/iq80321reg.h>
56 #include <evbarm/iq80321/obiovar.h>
57
58 #include "locators.h"
59
60 int obio_match(device_t, cfdata_t, void *);
61 void obio_attach(device_t, device_t, void *);
62
63 CFATTACH_DECL_NEW(obio, 0,
64 obio_match, obio_attach, NULL, NULL);
65
66 int obio_print(void *, const char *);
67 int obio_search(device_t, cfdata_t, const int *, void *);
68
69 /* there can be only one */
70 bool obio_found;
71
72 int
obio_match(device_t parent,cfdata_t cf,void * aux)73 obio_match(device_t parent, cfdata_t cf, void *aux)
74 {
75 #if 0
76 struct mainbus_attach_args *ma = aux;
77 #endif
78
79 if (obio_found)
80 return (0);
81
82 #if 1
83 /* XXX Shoot arch/arm/mainbus in the head. */
84 return (1);
85 #else
86 if (strcmp(cf->cf_name, ma->ma_name) == 0)
87 return (1);
88
89 return (0);
90 #endif
91 }
92
93 void
obio_attach(device_t parent,device_t self,void * aux)94 obio_attach(device_t parent, device_t self, void *aux)
95 {
96
97 obio_found = true;
98
99 aprint_naive("\n");
100 aprint_normal("\n");
101
102 /*
103 * Attach all on-board devices as described in the kernel
104 * configuration file.
105 */
106 config_search(self, NULL,
107 CFARGS(.search = obio_search));
108 }
109
110 int
obio_print(void * aux,const char * pnp)111 obio_print(void *aux, const char *pnp)
112 {
113 struct obio_attach_args *oba = aux;
114
115 aprint_normal(" addr 0x%08lx", oba->oba_addr);
116 if (oba->oba_size != OBIOCF_SIZE_DEFAULT)
117 aprint_normal("-0x%08lx", oba->oba_addr + (oba->oba_size - 1));
118 if (oba->oba_width != OBIOCF_WIDTH_DEFAULT)
119 aprint_normal(" width %d", oba->oba_width);
120 if (oba->oba_irq != -1)
121 aprint_normal(" xint %d", oba->oba_irq - ICU_INT_XINT0);
122
123 return (UNCONF);
124 }
125
126 int
obio_search(device_t parent,cfdata_t cf,const int * ldesc,void * aux)127 obio_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
128 {
129 struct obio_attach_args oba;
130
131 oba.oba_st = &obio_bs_tag;
132
133 oba.oba_addr = cf->cf_loc[OBIOCF_ADDR];
134 oba.oba_size = cf->cf_loc[OBIOCF_SIZE];
135 oba.oba_width = cf->cf_loc[OBIOCF_WIDTH];
136
137 if (cf->cf_loc[OBIOCF_XINT] != OBIOCF_XINT_DEFAULT)
138 oba.oba_irq = ICU_INT_XINT(cf->cf_loc[OBIOCF_XINT]);
139 else
140 oba.oba_irq = -1;
141
142 if (config_probe(parent, cf, &oba))
143 config_attach(parent, cf, &oba, obio_print, CFARGS_NONE);
144
145 return (0);
146 }
147