1 /* $NetBSD: mainbus.c,v 1.20 2008/04/28 20:23:10 martin 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 1.20 2008/04/28 20:23:10 martin 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/systm.h> 43 #include <sys/conf.h> 44 #include <sys/reboot.h> 45 #include <sys/device.h> 46 #include <sys/malloc.h> 47 #include <sys/extent.h> 48 49 #include <machine/bus.h> 50 #include <machine/autoconf.h> 51 52 #include <mips/cache.h> 53 54 #include <dev/pci/pcivar.h> 55 #include <dev/pci/pciconf.h> 56 57 #if defined(PCI_NETBSD_CONFIGURE) && defined(PCI_NETBSD_ENABLE_IDE) 58 #if defined(ALGOR_P5064) || defined(ALGOR_P6032) 59 #include <dev/pci/pciide_piix_reg.h> 60 #endif /* ALGOR_P5064 || ALGOR_P6032 */ 61 #endif /* PCI_NETBSD_CONFIGURE && PCI_NETBSD_ENABLE_IDE */ 62 63 #include "locators.h" 64 #include "pci.h" 65 66 int mainbus_match(struct device *, struct cfdata *, void *); 67 void mainbus_attach(struct device *, struct device *, void *); 68 69 CFATTACH_DECL(mainbus, sizeof(struct device), 70 mainbus_match, mainbus_attach, NULL, NULL); 71 72 int mainbus_print(void *, const char *); 73 int mainbus_submatch(struct device *, struct cfdata *, 74 const int *, void *); 75 76 /* There can be only one. */ 77 int mainbus_found; 78 79 struct mainbusdev { 80 const char *md_name; 81 bus_addr_t md_addr; 82 int md_irq; 83 }; 84 85 #if defined(ALGOR_P4032) 86 #include <algor/algor/algor_p4032reg.h> 87 #include <algor/algor/algor_p4032var.h> 88 89 struct mainbusdev mainbusdevs[] = { 90 { "cpu", -1, -1 }, 91 { "mcclock", P4032_RTC, P4032_IRQ_RTC }, 92 { "com", P4032_COM1, P4032_IRQ_COM1 }, 93 { "com", P4032_COM2, P4032_IRQ_COM2 }, 94 { "lpt", P4032_LPT, P4032_IRQ_LPT }, 95 { "pckbc", P4032_PCKBC, P4032_IRQ_PCKBC }, 96 { "fdc", P4032_FDC, P4032_IRQ_FLOPPY }, 97 { "vtpbc", P4032_V962PBC, -1 }, 98 99 { NULL, 0, 0 }, 100 }; 101 #endif /* ALGOR_P4032 */ 102 103 #if defined(ALGOR_P5064) 104 #include <algor/algor/algor_p5064reg.h> 105 #include <algor/algor/algor_p5064var.h> 106 107 struct mainbusdev mainbusdevs[] = { 108 { "cpu", -1, -1 }, 109 { "vtpbc", P5064_V360EPC, -1 }, 110 111 { NULL, 0, 0 }, 112 }; 113 #endif /* ALGOR_P5064 */ 114 115 #if defined(ALGOR_P6032) 116 #include <algor/algor/algor_p6032reg.h> 117 #include <algor/algor/algor_p6032var.h> 118 119 struct mainbusdev mainbusdevs[] = { 120 { "cpu", -1, -1 }, 121 { "bonito", BONITO_REG_BASE, -1 }, 122 123 { NULL, 0, 0 }, 124 }; 125 #endif /* ALGOR_P6032 */ 126 127 int 128 mainbus_match(struct device *parent, struct cfdata *cf, void *aux) 129 { 130 131 if (mainbus_found) 132 return (0); 133 134 return (1); 135 } 136 137 void 138 mainbus_attach(struct device *parent, struct device *self, void *aux) 139 { 140 struct mainbus_attach_args ma; 141 struct mainbusdev *md; 142 bus_space_tag_t st; 143 #if defined(PCI_NETBSD_CONFIGURE) 144 struct extent *ioext, *memext; 145 pci_chipset_tag_t pc; 146 #if defined(PCI_NETBSD_ENABLE_IDE) 147 pcitag_t idetag; 148 pcireg_t idetim; 149 #endif 150 #endif 151 152 mainbus_found = 1; 153 154 printf("\n"); 155 156 #if NPCI > 0 && defined(PCI_NETBSD_CONFIGURE) 157 #if defined(ALGOR_P4032) 158 /* 159 * Reserve the bottom 64K of the I/O space for ISA devices. 160 */ 161 ioext = extent_create("pciio", 0x00010000, 0x000effff, 162 M_DEVBUF, NULL, 0, EX_NOWAIT); 163 memext = extent_create("pcimem", 0x01000000, 0x07ffffff, 164 M_DEVBUF, NULL, 0, EX_NOWAIT); 165 166 pc = &p4032_configuration.ac_pc; 167 #elif defined(ALGOR_P5064) 168 /* 169 * Reserve the bottom 512K of the I/O space for ISA devices. 170 * According to the PMON sources, this is a work-around for 171 * a bug in the ISA bridge. 172 */ 173 ioext = extent_create("pciio", 0x00080000, 0x00ffffff, 174 M_DEVBUF, NULL, 0, EX_NOWAIT); 175 memext = extent_create("pcimem", 0x01000000, 0x07ffffff, 176 M_DEVBUF, NULL, 0, EX_NOWAIT); 177 178 pc = &p5064_configuration.ac_pc; 179 #if defined(PCI_NETBSD_ENABLE_IDE) 180 idetag = pci_make_tag(pc, 0, 2, 1); 181 #endif 182 #elif defined(ALGOR_P6032) 183 /* 184 * Reserve the bottom 64K of the I/O space for ISA devices. 185 */ 186 ioext = extent_create("pciio", 0x00010000, 0x000effff, 187 M_DEVBUF, NULL, 0, EX_NOWAIT); 188 memext = extent_create("pcimem", 0x01000000, 0x0affffff, 189 M_DEVBUF, NULL, 0, EX_NOWAIT); 190 191 pc = &p6032_configuration.ac_pc; 192 #if defined(PCI_NETBSD_ENABLE_IDE) 193 idetag = pci_make_tag(pc, 0, 17, 1); 194 #endif 195 #endif /* ALGOR_P4032 || ALGOR_P5064 || ALGOR_P6032 */ 196 197 pci_configure_bus(pc, ioext, memext, NULL, 0, mips_dcache_align); 198 extent_destroy(ioext); 199 extent_destroy(memext); 200 201 #if defined(PCI_NETBSD_ENABLE_IDE) 202 /* 203 * Perhaps PMON has not enabled the IDE controller. Easy to 204 * fix -- just set the ENABLE bits for each channel in the 205 * IDETIM register. Just clear all the bits for the channel 206 * except for the ENABLE bits -- the `pciide' driver will 207 * properly configure it later. 208 */ 209 idetim = 0; 210 if (PCI_NETBSD_ENABLE_IDE & 0x01) 211 idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE, 0); 212 if (PCI_NETBSD_ENABLE_IDE & 0x02) 213 idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE, 1); 214 pci_conf_write(pc, idetag, PIIX_IDETIM, idetim); 215 #endif 216 #endif /* NPCI > 0 && defined(PCI_NETBSD_CONFIGURE) */ 217 218 #if defined(ALGOR_P4032) 219 st = &p4032_configuration.ac_lociot; 220 #elif defined(ALGOR_P5064) 221 st = NULL; 222 #elif defined(ALGOR_P6032) 223 st = NULL; 224 #endif 225 226 for (md = mainbusdevs; md->md_name != NULL; md++) { 227 ma.ma_name = md->md_name; 228 ma.ma_st = st; 229 ma.ma_addr = md->md_addr; 230 ma.ma_irq = md->md_irq; 231 (void) config_found_sm_loc(self, "mainbus", NULL, &ma, 232 mainbus_print, mainbus_submatch); 233 } 234 } 235 236 int 237 mainbus_print(void *aux, const char *pnp) 238 { 239 struct mainbus_attach_args *ma = aux; 240 241 if (pnp) 242 aprint_normal("%s at %s", ma->ma_name, pnp); 243 if (ma->ma_addr != (bus_addr_t) -1) 244 aprint_normal(" addr 0x%lx", ma->ma_addr); 245 246 return (UNCONF); 247 } 248 249 int 250 mainbus_submatch(struct device *parent, struct cfdata *cf, 251 const int *ldesc, void *aux) 252 { 253 struct mainbus_attach_args *ma = aux; 254 255 if (cf->cf_loc[MAINBUSCF_ADDR] != MAINBUSCF_ADDR_DEFAULT && 256 cf->cf_loc[MAINBUSCF_ADDR] != ma->ma_addr) 257 return (0); 258 259 return (config_match(parent, cf, aux)); 260 } 261