1 /* $NetBSD: mainbus.c,v 1.31 2023/12/20 06:36:01 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.31 2023/12/20 06:36:01 thorpej Exp $");
34
35 #include "opt_algor_p4032.h"
36 #include "opt_algor_p5064.h"
37 #include "opt_algor_p6032.h"
38
39 #include "opt_pci.h"
40
41 #include <sys/param.h>
42 #include <sys/bus.h>
43 #include <sys/conf.h>
44 #include <sys/device.h>
45 #include <sys/reboot.h>
46 #include <sys/systm.h>
47
48 #include <algor/autoconf.h>
49
50 #include <mips/cache.h>
51
52 #include <dev/pci/pcivar.h>
53 #include <dev/pci/pciconf.h>
54
55 #if defined(PCI_NETBSD_CONFIGURE) && defined(PCI_NETBSD_ENABLE_IDE)
56 #if defined(ALGOR_P5064) || defined(ALGOR_P6032)
57 #include <dev/pci/pciide_piix_reg.h>
58 #endif /* ALGOR_P5064 || ALGOR_P6032 */
59 #endif /* PCI_NETBSD_CONFIGURE && PCI_NETBSD_ENABLE_IDE */
60
61 #include "locators.h"
62 #include "pci.h"
63
64 int mainbus_match(device_t, cfdata_t, void *);
65 void mainbus_attach(device_t, device_t, void *);
66
67 CFATTACH_DECL_NEW(mainbus, 0,
68 mainbus_match, mainbus_attach, NULL, NULL);
69
70 int mainbus_print(void *, const char *);
71 int mainbus_submatch(device_t, cfdata_t,
72 const int *, void *);
73
74 /* There can be only one. */
75 int mainbus_found;
76
77 struct mainbusdev {
78 const char *md_name;
79 bus_addr_t md_addr;
80 int md_irq;
81 };
82
83 #if defined(ALGOR_P4032)
84 #include <algor/algor/algor_p4032reg.h>
85 #include <algor/algor/algor_p4032var.h>
86
87 struct mainbusdev mainbusdevs[] = {
88 { "cpu", -1, -1 },
89 { "mcclock", P4032_RTC, P4032_IRQ_RTC },
90 { "com", P4032_COM1, P4032_IRQ_COM1 },
91 { "com", P4032_COM2, P4032_IRQ_COM2 },
92 { "lpt", P4032_LPT, P4032_IRQ_LPT },
93 { "pckbc", P4032_PCKBC, P4032_IRQ_PCKBC },
94 { "fdc", P4032_FDC, P4032_IRQ_FLOPPY },
95 { "vtpbc", P4032_V962PBC, -1 },
96
97 { NULL, 0, 0 },
98 };
99
100 /* Reserve the bottom 64K of the I/O space for ISA devices. */
101 #define PCI_IO_START 0x00010000
102 #define PCI_IO_END 0x000effff
103 #define PCI_MEM_START 0x01000000
104 #define PCI_MEM_END 0x07ffffff
105 #define PCI_CHIPSET &p4032_configuration.ac_pc
106 #endif /* ALGOR_P4032 */
107
108 #if defined(ALGOR_P5064)
109 #include <algor/algor/algor_p5064reg.h>
110 #include <algor/algor/algor_p5064var.h>
111
112 struct mainbusdev mainbusdevs[] = {
113 { "cpu", -1, -1 },
114 { "vtpbc", P5064_V360EPC, -1 },
115
116 { NULL, 0, 0 },
117 };
118
119 /*
120 * Reserve the bottom 512K of the I/O space for ISA devices.
121 * According to the PMON sources, this is a work-around for
122 * a bug in the ISA bridge.
123 */
124 #define PCI_IO_START 0x00080000
125 #define PCI_IO_END 0x00ffffff
126 #define PCI_MEM_START 0x01000000
127 #define PCI_MEM_END 0x07ffffff
128 #define PCI_IDE_DEV 2
129 #define PCI_IDE_FUNC 1
130 #define PCI_CHIPSET &p5064_configuration.ac_pc
131 #endif /* ALGOR_P5064 */
132
133 #if defined(ALGOR_P6032)
134 #include <algor/algor/algor_p6032reg.h>
135 #include <algor/algor/algor_p6032var.h>
136
137 struct mainbusdev mainbusdevs[] = {
138 { "cpu", -1, -1 },
139 { "bonito", BONITO_REG_BASE, -1 },
140
141 { NULL, 0, 0 },
142 };
143
144 /* Reserve the bottom 64K of the I/O space for ISA devices. */
145 #define PCI_IO_START 0x00010000
146 #define PCI_IO_END 0x000effff
147 #define PCI_MEM_START 0x01000000
148 #define PCI_MEM_END 0x0affffff
149 #define PCI_IDE_DEV 17
150 #define PCI_IDE_FUNC 1
151 #define PCI_CHIPSET &p6032_configuration.ac_pc
152 #endif /* ALGOR_P6032 */
153
154 #define PCI_IO_SIZE ((PCI_IO_END - PCI_IO_START) + 1)
155 #define PCI_MEM_SIZE ((PCI_MEM_END - PCI_MEM_START) + 1)
156
157 int
mainbus_match(device_t parent,cfdata_t cf,void * aux)158 mainbus_match(device_t parent, cfdata_t cf, void *aux)
159 {
160
161 if (mainbus_found)
162 return (0);
163
164 return (1);
165 }
166
167 void
mainbus_attach(device_t parent,device_t self,void * aux)168 mainbus_attach(device_t parent, device_t self, void *aux)
169 {
170 struct mainbus_attach_args ma;
171 struct mainbusdev *md;
172 bus_space_tag_t st;
173
174 mainbus_found = 1;
175
176 printf("\n");
177
178 #if NPCI > 0 && defined(PCI_NETBSD_CONFIGURE)
179 struct pciconf_resources *pcires = pciconf_resource_init();
180
181 pciconf_resource_add(pcires, PCICONF_RESOURCE_IO,
182 PCI_IO_START, PCI_IO_SIZE);
183 pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM,
184 PCI_MEM_START, PCI_MEM_SIZE);
185
186 pci_configure_bus(PCI_CHIPSET, pcires, 0,
187 mips_cache_info.mci_dcache_align);
188 pciconf_resource_fini(pcires);
189
190 #if defined(PCI_NETBSD_ENABLE_IDE)
191 /*
192 * Perhaps PMON has not enabled the IDE controller. Easy to
193 * fix -- just set the ENABLE bits for each channel in the
194 * IDETIM register. Just clear all the bits for the channel
195 * except for the ENABLE bits -- the `pciide' driver will
196 * properly configure it later.
197 */
198 pcitag_t idetag = pci_make_tag(PCI_CHIPSET, 0, PCI_IDE_DEV,
199 PCI_IDE_FUNC);
200 pcireg_t idetim = 0;
201 if (PCI_NETBSD_ENABLE_IDE & 0x01)
202 idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE, 0);
203 if (PCI_NETBSD_ENABLE_IDE & 0x02)
204 idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE, 1);
205 pci_conf_write(PCI_CHIPSET, idetag, PIIX_IDETIM, idetim);
206 #endif
207 #endif /* NPCI > 0 && defined(PCI_NETBSD_CONFIGURE) */
208
209 #if defined(ALGOR_P4032)
210 st = &p4032_configuration.ac_lociot;
211 #elif defined(ALGOR_P5064)
212 st = NULL;
213 #elif defined(ALGOR_P6032)
214 st = NULL;
215 #endif
216
217 for (md = mainbusdevs; md->md_name != NULL; md++) {
218 ma.ma_name = md->md_name;
219 ma.ma_st = st;
220 ma.ma_addr = md->md_addr;
221 ma.ma_irq = md->md_irq;
222 config_found(self, &ma, mainbus_print,
223 CFARGS(.submatch = mainbus_submatch));
224 }
225 }
226
227 int
mainbus_print(void * aux,const char * pnp)228 mainbus_print(void *aux, const char *pnp)
229 {
230 struct mainbus_attach_args *ma = aux;
231
232 if (pnp)
233 aprint_normal("%s at %s", ma->ma_name, pnp);
234 if (ma->ma_addr != (bus_addr_t) -1)
235 aprint_normal(" addr %#" PRIxBUSADDR, ma->ma_addr);
236
237 return (UNCONF);
238 }
239
240 int
mainbus_submatch(device_t parent,cfdata_t cf,const int * ldesc,void * aux)241 mainbus_submatch(device_t parent, cfdata_t cf,
242 const int *ldesc, void *aux)
243 {
244 struct mainbus_attach_args *ma = aux;
245
246 if (cf->cf_loc[MAINBUSCF_ADDR] != MAINBUSCF_ADDR_DEFAULT &&
247 cf->cf_loc[MAINBUSCF_ADDR] != ma->ma_addr)
248 return (0);
249
250 return (config_match(parent, cf, aux));
251 }
252