1 /* $NetBSD: obio.c,v 1.17 2021/08/07 16:19:13 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed for the NetBSD Project by
18 * Allegro Networks, Inc., and Wasabi Systems, Inc.
19 * 4. The name of Allegro Networks, Inc. may not be used to endorse
20 * or promote products derived from this software without specific prior
21 * written permission.
22 * 5. The name of Wasabi Systems, Inc. may not be used to endorse
23 * or promote products derived from this software without specific prior
24 * written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND
27 * WASABI SYSTEMS, INC. ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
28 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
29 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
30 * IN NO EVENT SHALL EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC.
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 #include <sys/cdefs.h>
41 __KERNEL_RCSID(0, "$NetBSD: obio.c,v 1.17 2021/08/07 16:19:13 thorpej Exp $");
42
43 #include "opt_marvell.h"
44
45 #include <sys/param.h>
46 #include <sys/types.h>
47 #include <sys/extent.h>
48 #include <sys/device.h>
49 #include <sys/kernel.h>
50
51 #include <dev/pci/pcivar.h>
52 #include <dev/marvell/gtreg.h>
53 #include <dev/marvell/gtvar.h>
54 #include <dev/marvell/gtdevbusvar.h>
55 #include <dev/marvell/marvellvar.h>
56
57 #include <prop/proplib.h>
58
59 #ifdef DEBUG
60 #include <sys/systm.h> /* for Debugger() */
61 #endif
62
63 #include "locators.h"
64
65
66 static int obio_match(device_t, cfdata_t, void *);
67 static void obio_attach(device_t, device_t, void *);
68
69 static int obio_cfprint(void *, const char *);
70 static int obio_cfsearch(device_t, cfdata_t, const int *, void *);
71
72
73 struct obio_softc {
74 device_t sc_dev;
75 bus_space_tag_t sc_iot;
76 };
77
78 CFATTACH_DECL_NEW(obio, sizeof(struct obio_softc),
79 obio_match, obio_attach, NULL, NULL);
80
81
82 /* ARGSUSED */
83 int
obio_match(device_t parent,cfdata_t cf,void * aux)84 obio_match(device_t parent, cfdata_t cf, void *aux)
85 {
86 struct marvell_attach_args *mva = aux;
87
88 if (strcmp(mva->mva_name, cf->cf_name) != 0)
89 return 0;
90
91 #define NUM_OBIO 5
92 if (mva->mva_unit == MVA_UNIT_DEFAULT ||
93 mva->mva_unit > NUM_OBIO)
94 return 0;
95
96 return 1;
97 }
98
99 /* ARGSUSED */
100 void
obio_attach(device_t parent,device_t self,void * aux)101 obio_attach(device_t parent, device_t self, void *aux)
102 {
103 struct obio_softc *sc = device_private(self);
104 struct marvell_attach_args *mva = aux;
105 prop_data_t bst;
106 uint32_t datal, datah;
107
108 aprint_naive("\n");
109 aprint_normal(": Device Bus\n");
110
111 sc->sc_dev = self;
112
113 if (gt_devbus_addr(parent, mva->mva_unit, &datal, &datah)) {
114 aprint_error_dev(self, "unknown unit number %d\n",
115 mva->mva_unit);
116 return;
117 }
118
119 if (GT_LowAddr_GET(datal) > GT_HighAddr_GET(datah)) {
120 aprint_normal_dev(self, "disabled\n");
121 return;
122 }
123
124 bst = prop_dictionary_get(device_properties(sc->sc_dev), "bus-tag");
125 if (bst != NULL) {
126 KASSERT(prop_object_type(bst) == PROP_TYPE_DATA);
127 KASSERT(prop_data_size(bst) == sizeof(bus_space_tag_t));
128 memcpy(&sc->sc_iot, prop_data_data_nocopy(bst),
129 sizeof(bus_space_tag_t));
130 } else
131 sc->sc_iot = mva->mva_iot;
132 if (sc->sc_iot == NULL) {
133 aprint_normal_dev(self, "unused\n");
134 return;
135 }
136
137 aprint_normal_dev(self, "addr %#x-%#x\n",
138 GT_LowAddr_GET(datal), GT_HighAddr_GET(datah));
139
140 config_search(self, NULL,
141 CFARGS(.search = obio_cfsearch));
142 }
143
144
145 int
obio_cfprint(void * aux,const char * pnp)146 obio_cfprint(void *aux, const char *pnp)
147 {
148 struct obio_attach_args *oa = aux;
149
150 if (pnp)
151 aprint_normal("%s at %s", oa->oa_name, pnp);
152 aprint_normal(" addr %#x size %#x", oa->oa_offset, oa->oa_size);
153 if (oa->oa_irq != OBIOCF_IRQ_DEFAULT)
154 aprint_normal(" irq %d", oa->oa_irq);
155
156 return UNCONF;
157 }
158
159
160 /* ARGSUSED */
161 int
obio_cfsearch(device_t parent,cfdata_t cf,const int * ldesc,void * aux)162 obio_cfsearch(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
163 {
164 struct obio_softc *sc = device_private(parent);
165 struct obio_attach_args oa;
166
167 oa.oa_name = cf->cf_name;
168 oa.oa_memt = sc->sc_iot;
169 oa.oa_offset = cf->cf_loc[OBIOCF_OFFSET];
170 oa.oa_size = cf->cf_loc[OBIOCF_SIZE];
171 oa.oa_irq = cf->cf_loc[OBIOCF_IRQ];
172
173 if (config_probe(parent, cf, &oa))
174 config_attach(parent, cf, &oa, obio_cfprint, CFARGS_NONE);
175
176 return 0;
177 }
178