1 /* $NetBSD: mainbus.c,v 1.7 2023/12/20 14:12:25 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: mainbus.c,v 1.7 2023/12/20 14:12:25 thorpej Exp $");
40
41 #include "opt_pci.h"
42
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/device.h>
46
47 #include <dev/pci/pcivar.h>
48 #if defined(PCI_NETBSD_CONFIGURE)
49 #include <dev/pci/pciconf.h>
50 #endif
51
52 #include <mips/cache.h>
53 #include <mips/cpuregs.h>
54
55 #include <mips/bonito/bonitoreg.h>
56
57 #include <evbmips/loongson/autoconf.h>
58 #if defined(PCI_NETBSD_CONFIGURE)
59 #include <evbmips/loongson/loongson_bus_defs.h>
60 #endif
61
62 #include "locators.h"
63 #include "pci.h"
64
65 static int mainbus_match(device_t, cfdata_t, void *);
66 static void mainbus_attach(device_t, device_t, void *);
67 static int mainbus_print(void *, const char *);
68
69 CFATTACH_DECL_NEW(mainbus, 0,
70 mainbus_match, mainbus_attach, NULL, NULL);
71
72 /* There can be only one. */
73 static bool mainbus_found;
74
75 const char * const mainbusdevs[] = {
76 "cpu",
77 "bonito",
78 #if 0
79 "i2c",
80 "gpio",
81 #endif
82 };
83
84 #define PCI_IO_START 0x00001000
85 #define PCI_IO_END 0x00003fff
86 #define PCI_IO_SIZE ((PCI_IO_END - PCI_IO_START) + 1)
87
88 #define PCI_MEM_START 0
89 #define PCI_MEM_SIZE BONITO_PCILO_SIZE
90
91 static int
mainbus_match(device_t parent,cfdata_t match,void * aux)92 mainbus_match(device_t parent, cfdata_t match, void *aux)
93 {
94 if (mainbus_found)
95 return (0);
96
97 return (1);
98 }
99
100 static void
mainbus_attach(device_t parent,device_t self,void * aux)101 mainbus_attach(device_t parent, device_t self, void *aux)
102 {
103 size_t i;
104
105 mainbus_found = true;
106 aprint_normal("\n");
107
108 #if defined(PCI_NETBSD_CONFIGURE)
109 struct mips_cache_info * const mci = &mips_cache_info;
110 struct pciconf_resources *pcires = pciconf_resource_init();
111
112 pciconf_resource_add(pcires, PCICONF_RESOURCE_IO,
113 PCI_IO_START, PCI_IO_SIZE);
114 pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM,
115 PCI_MEM_START, PCI_MEM_SIZE);
116
117 pci_configure_bus(&bonito_pc, pcires, 0, mci->mci_dcache_align);
118 pciconf_resource_fini(pcires);
119 #endif /* PCI_NETBSD_CONFIGURE */
120
121 for (i = 0; i < __arraycount(mainbusdevs); i++) {
122 struct mainbus_attach_args maa;
123 maa.maa_name = mainbusdevs[i];
124 (void) config_found(self, &maa, mainbus_print, CFARGS_NONE);
125 }
126 }
127
128 static int
mainbus_print(void * aux,const char * pnp)129 mainbus_print(void *aux, const char *pnp)
130 {
131 struct mainbus_attach_args *maa = aux;
132
133 if (pnp)
134 aprint_normal("%s at %s", maa->maa_name, pnp);
135
136 return UNCONF;
137 }
138