1 /* $OpenBSD: cortex.c,v 1.8 2024/08/18 15:50:47 deraadt Exp $ */
2 /* $NetBSD: mainbus.c,v 1.3 2001/06/13 17:52:43 nathanw Exp $ */
3
4 /*
5 * Copyright (c) 1994,1995 Mark Brinicombe.
6 * Copyright (c) 1994 Brini.
7 * All rights reserved.
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 by Brini.
20 * 4. The name of the company nor the name of the author may be used to
21 * endorse or promote products derived from this software without specific
22 * prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * RiscBSD kernel project
37 *
38 * mainbus.c
39 *
40 * mainbus configuration
41 *
42 * Created : 15/12/94
43 */
44
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/kernel.h>
48 #include <sys/device.h>
49 #define _ARM32_BUS_DMA_PRIVATE
50 #include <machine/bus.h>
51 #include <arm/cpufunc.h>
52 #include <arm/armv7/armv7var.h>
53 #include <arm/cortex/cortex.h>
54 #include <arm/mainbus/mainbus.h>
55
56 struct arm32_bus_dma_tag cortex_bus_dma_tag = {
57 NULL,
58 _bus_dmamap_create,
59 _bus_dmamap_destroy,
60 _bus_dmamap_load,
61 _bus_dmamap_load_mbuf,
62 _bus_dmamap_load_uio,
63 _bus_dmamap_load_raw,
64 _bus_dmamap_load_buffer,
65 _bus_dmamap_unload,
66 _bus_dmamap_sync,
67 _bus_dmamem_alloc,
68 _bus_dmamem_free,
69 _bus_dmamem_map,
70 _bus_dmamem_unmap,
71 _bus_dmamem_mmap,
72 };
73
74 /* Prototypes for functions provided */
75
76 int cortexmatch(struct device *, void *, void *);
77 void cortexattach(struct device *, struct device *, void *);
78 int cortexprint(void *aux, const char *cortex);
79 int cortexsearch(struct device *, void *, void *);
80
81 /* attach and device structures for the device */
82
83 const struct cfattach cortex_ca = {
84 sizeof(struct device), cortexmatch, cortexattach
85 };
86
87 struct cfdriver cortex_cd = {
88 NULL, "cortex", DV_DULL
89 };
90
91 /*
92 * int cortexmatch(struct device *parent, struct cfdata *cf, void *aux)
93 */
94
95 int
cortexmatch(struct device * parent,void * cfdata,void * aux)96 cortexmatch(struct device *parent, void *cfdata, void *aux)
97 {
98 union mainbus_attach_args *ma = aux;
99 struct cfdata *cf = (struct cfdata *)cfdata;
100 int cputype = cpufunc_id();
101
102 if (strcmp(cf->cf_driver->cd_name, ma->ma_name) != 0)
103 return (0);
104
105 if ((cputype & CPU_ID_CORTEX_A7_MASK) == CPU_ID_CORTEX_A7 ||
106 (cputype & CPU_ID_CORTEX_A9_MASK) == CPU_ID_CORTEX_A9 ||
107 (cputype & CPU_ID_CORTEX_A15_MASK) == CPU_ID_CORTEX_A15 ||
108 (cputype & CPU_ID_CORTEX_A17_MASK) == CPU_ID_CORTEX_A17) {
109 if (armv7_periphbase())
110 return (1);
111 }
112
113 return (0);
114 }
115
116 /*
117 * void cortexattach(struct device *parent, struct device *self, void *aux)
118 *
119 * probe and attach all children
120 */
121
122 void
cortexattach(struct device * parent,struct device * self,void * aux)123 cortexattach(struct device *parent, struct device *self, void *aux)
124 {
125 printf("\n");
126
127 config_search(cortexsearch, self, aux);
128 }
129
130 int
cortexsearch(struct device * parent,void * vcf,void * aux)131 cortexsearch(struct device *parent, void *vcf, void *aux)
132 {
133 struct cortex_attach_args ca;
134 struct cfdata *cf = vcf;
135
136 ca.ca_name = cf->cf_driver->cd_name;
137 ca.ca_iot = &armv7_bs_tag;
138 ca.ca_dmat = &cortex_bus_dma_tag;
139 ca.ca_periphbase = armv7_periphbase();
140
141 /* allow for devices to be disabled in UKC */
142 if ((*cf->cf_attach->ca_match)(parent, cf, &ca) == 0)
143 return 0;
144
145 config_attach(parent, cf, &ca, cortexprint);
146 return 1;
147 }
148
149 /*
150 * int cortexprint(void *aux, const char *cortex)
151 *
152 * print routine used during config of children
153 */
154
155 int
cortexprint(void * aux,const char * cortex)156 cortexprint(void *aux, const char *cortex)
157 {
158 struct cortex_attach_args *ca = aux;
159
160 if (cortex != NULL)
161 printf("%s at %s", ca->ca_name, cortex);
162
163 return (UNCONF);
164 }
165