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 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 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 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 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