| 1 | /* $NetBSD: mainbus.c,v 1.37 2016/06/21 11:33:32 nonaka Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. All advertising materials mentioning features or use of this software |
| 15 | * must display the following acknowledgement: |
| 16 | * This product includes software developed by Christopher G. Demetriou |
| 17 | * for the NetBSD Project. |
| 18 | * 4. The name of the author may not be used to endorse or promote products |
| 19 | * derived from this software without specific prior written permission |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 22 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 23 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 24 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 25 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 26 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 30 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #include <sys/cdefs.h> |
| 34 | __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.37 2016/06/21 11:33:32 nonaka Exp $" ); |
| 35 | |
| 36 | #include <sys/param.h> |
| 37 | #include <sys/systm.h> |
| 38 | #include <sys/device.h> |
| 39 | #include <sys/reboot.h> |
| 40 | #include <sys/bus.h> |
| 41 | |
| 42 | #include <dev/isa/isavar.h> |
| 43 | #include <dev/pci/pcivar.h> |
| 44 | |
| 45 | #include <dev/isa/isareg.h> |
| 46 | |
| 47 | #include "pci.h" |
| 48 | #include "isa.h" |
| 49 | #include "isadma.h" |
| 50 | #include "acpica.h" |
| 51 | #include "ipmi.h" |
| 52 | |
| 53 | #include "opt_acpi.h" |
| 54 | #include "opt_mpbios.h" |
| 55 | #include "opt_pcifixup.h" |
| 56 | |
| 57 | #include <machine/cpuvar.h> |
| 58 | #include <machine/i82093var.h> |
| 59 | #include <machine/mpbiosvar.h> |
| 60 | #include <machine/mpacpi.h> |
| 61 | |
| 62 | #if NACPICA > 0 |
| 63 | #include <dev/acpi/acpivar.h> |
| 64 | #endif |
| 65 | |
| 66 | #if NIPMI > 0 |
| 67 | #include <x86/ipmivar.h> |
| 68 | #endif |
| 69 | |
| 70 | #if NPCI > 0 |
| 71 | #if defined(PCI_BUS_FIXUP) |
| 72 | #include <arch/x86/pci/pci_bus_fixup.h> |
| 73 | #if defined(PCI_ADDR_FIXUP) |
| 74 | #include <arch/x86/pci/pci_addr_fixup.h> |
| 75 | #endif |
| 76 | #endif |
| 77 | #include <arch/x86/pci/msipic.h> |
| 78 | #endif |
| 79 | |
| 80 | /* |
| 81 | * XXXfvdl ACPI |
| 82 | */ |
| 83 | |
| 84 | int mainbus_match(device_t, cfdata_t, void *); |
| 85 | void mainbus_attach(device_t, device_t, void *); |
| 86 | |
| 87 | CFATTACH_DECL_NEW(mainbus, 0, |
| 88 | mainbus_match, mainbus_attach, NULL, NULL); |
| 89 | |
| 90 | int mainbus_print(void *, const char *); |
| 91 | |
| 92 | union mainbus_attach_args { |
| 93 | const char *mba_busname; /* first elem of all */ |
| 94 | struct pcibus_attach_args mba_pba; |
| 95 | struct isabus_attach_args mba_iba; |
| 96 | struct cpu_attach_args mba_caa; |
| 97 | #if NACPICA > 0 |
| 98 | struct acpibus_attach_args mba_acpi; |
| 99 | #endif |
| 100 | struct apic_attach_args aaa_caa; |
| 101 | #if NIPMI > 0 |
| 102 | struct ipmi_attach_args mba_ipmi; |
| 103 | #endif |
| 104 | }; |
| 105 | |
| 106 | /* |
| 107 | * This is set when the ISA bus is attached. If it's not set by the |
| 108 | * time it's checked below, then mainbus attempts to attach an ISA. |
| 109 | */ |
| 110 | int isa_has_been_seen; |
| 111 | struct x86_isa_chipset x86_isa_chipset; |
| 112 | #if NISA > 0 |
| 113 | static const struct isabus_attach_args mba_iba = { |
| 114 | ._iba_busname = "isa" , |
| 115 | .iba_dmat = &isa_bus_dma_tag, |
| 116 | .iba_ic = &x86_isa_chipset |
| 117 | }; |
| 118 | #endif |
| 119 | |
| 120 | #if defined(MPBIOS) || NACPICA > 0 |
| 121 | struct mp_bus *mp_busses; |
| 122 | int mp_nbus; |
| 123 | struct mp_intr_map *mp_intrs; |
| 124 | int mp_nintr; |
| 125 | |
| 126 | int mp_isa_bus = -1; |
| 127 | int mp_eisa_bus = -1; |
| 128 | |
| 129 | # ifdef MPVERBOSE |
| 130 | # if MPVERBOSE > 0 |
| 131 | int mp_verbose = MPVERBOSE; |
| 132 | # else |
| 133 | int mp_verbose = 1; |
| 134 | # endif |
| 135 | # else |
| 136 | int mp_verbose = 0; |
| 137 | # endif |
| 138 | #endif |
| 139 | |
| 140 | |
| 141 | /* |
| 142 | * Probe for the mainbus; always succeeds. |
| 143 | */ |
| 144 | int |
| 145 | mainbus_match(device_t parent, cfdata_t match, void *aux) |
| 146 | { |
| 147 | |
| 148 | return 1; |
| 149 | } |
| 150 | |
| 151 | /* |
| 152 | * Attach the mainbus. |
| 153 | */ |
| 154 | void |
| 155 | mainbus_attach(device_t parent, device_t self, void *aux) |
| 156 | { |
| 157 | #if NPCI > 0 || NACPICA > 0 || NIPMI > 0 |
| 158 | union mainbus_attach_args mba; |
| 159 | #endif |
| 160 | #if NPCI > 0 |
| 161 | int mode; |
| 162 | #endif |
| 163 | #if NACPICA > 0 |
| 164 | int acpi_present = 0; |
| 165 | #endif |
| 166 | #ifdef MPBIOS |
| 167 | int mpbios_present = 0; |
| 168 | #endif |
| 169 | int mpacpi_active = 0; |
| 170 | int numcpus = 0; |
| 171 | #if defined(PCI_BUS_FIXUP) |
| 172 | int pci_maxbus = 0; |
| 173 | #endif |
| 174 | |
| 175 | aprint_naive("\n" ); |
| 176 | aprint_normal("\n" ); |
| 177 | |
| 178 | #ifdef MPBIOS |
| 179 | mpbios_present = mpbios_probe(self); |
| 180 | #endif |
| 181 | |
| 182 | #if NPCI > 0 |
| 183 | msipic_init(); |
| 184 | |
| 185 | /* |
| 186 | * ACPI needs to be able to access PCI configuration space. |
| 187 | */ |
| 188 | mode = pci_mode_detect(); |
| 189 | #if defined(PCI_BUS_FIXUP) |
| 190 | if (mode != 0) { |
| 191 | pci_maxbus = pci_bus_fixup(NULL, 0); |
| 192 | aprint_debug("PCI bus max, after pci_bus_fixup: %i\n" , |
| 193 | pci_maxbus); |
| 194 | #if defined(PCI_ADDR_FIXUP) |
| 195 | pciaddr.extent_port = NULL; |
| 196 | pciaddr.extent_mem = NULL; |
| 197 | pci_addr_fixup(NULL, pci_maxbus); |
| 198 | #endif |
| 199 | } |
| 200 | #endif |
| 201 | #endif |
| 202 | |
| 203 | #if NACPICA > 0 |
| 204 | if ((boothowto & RB_MD2) == 0 && acpi_check(self, "acpibus" )) |
| 205 | acpi_present = acpi_probe(); |
| 206 | /* |
| 207 | * First, see if the MADT contains CPUs, and possibly I/O APICs. |
| 208 | * Building the interrupt routing structures can only |
| 209 | * be done later (via a callback). |
| 210 | */ |
| 211 | if (acpi_present) |
| 212 | mpacpi_active = mpacpi_scan_apics(self, &numcpus); |
| 213 | #endif |
| 214 | |
| 215 | if (!mpacpi_active) { |
| 216 | #ifdef MPBIOS |
| 217 | if (mpbios_present) |
| 218 | mpbios_scan(self, &numcpus); |
| 219 | else |
| 220 | #endif |
| 221 | if (numcpus == 0) { |
| 222 | struct cpu_attach_args caa; |
| 223 | |
| 224 | memset(&caa, 0, sizeof(caa)); |
| 225 | caa.cpu_number = 0; |
| 226 | caa.cpu_role = CPU_ROLE_SP; |
| 227 | caa.cpu_func = 0; |
| 228 | |
| 229 | config_found_ia(self, "cpubus" , &caa, mainbus_print); |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | #if NISADMA > 0 && NACPICA > 0 |
| 234 | /* |
| 235 | * ACPI needs ISA DMA initialized before they start probing. |
| 236 | */ |
| 237 | isa_dmainit(&x86_isa_chipset, x86_bus_space_io, &isa_bus_dma_tag, |
| 238 | self); |
| 239 | #endif |
| 240 | |
| 241 | #if NACPICA > 0 |
| 242 | if (acpi_present) { |
| 243 | mba.mba_acpi.aa_iot = x86_bus_space_io; |
| 244 | mba.mba_acpi.aa_memt = x86_bus_space_mem; |
| 245 | mba.mba_acpi.aa_pc = NULL; |
| 246 | mba.mba_acpi.aa_pciflags = |
| 247 | PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY | |
| 248 | PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | |
| 249 | PCI_FLAGS_MWI_OKAY; |
| 250 | mba.mba_acpi.aa_ic = &x86_isa_chipset; |
| 251 | mba.mba_acpi.aa_dmat = &pci_bus_dma_tag; |
| 252 | mba.mba_acpi.aa_dmat64 = &pci_bus_dma64_tag; |
| 253 | config_found_ia(self, "acpibus" , &mba.mba_acpi, 0); |
| 254 | } |
| 255 | #endif |
| 256 | |
| 257 | #if NIPMI > 0 |
| 258 | memset(&mba.mba_ipmi, 0, sizeof(mba.mba_ipmi)); |
| 259 | mba.mba_ipmi.iaa_iot = x86_bus_space_io; |
| 260 | mba.mba_ipmi.iaa_memt = x86_bus_space_mem; |
| 261 | if (ipmi_probe(&mba.mba_ipmi)) |
| 262 | config_found_ia(self, "ipmibus" , &mba.mba_ipmi, 0); |
| 263 | #endif |
| 264 | |
| 265 | #if NPCI > 0 |
| 266 | if (mode != 0) { |
| 267 | int npcibus = 0; |
| 268 | |
| 269 | mba.mba_pba.pba_iot = x86_bus_space_io; |
| 270 | mba.mba_pba.pba_memt = x86_bus_space_mem; |
| 271 | mba.mba_pba.pba_dmat = &pci_bus_dma_tag; |
| 272 | mba.mba_pba.pba_dmat64 = &pci_bus_dma64_tag; |
| 273 | mba.mba_pba.pba_pc = NULL; |
| 274 | mba.mba_pba.pba_flags = |
| 275 | PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY | |
| 276 | PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | |
| 277 | PCI_FLAGS_MWI_OKAY; |
| 278 | mba.mba_pba.pba_bus = 0; |
| 279 | mba.mba_pba.pba_bridgetag = NULL; |
| 280 | #if NACPICA > 0 && defined(ACPI_SCANPCI) |
| 281 | if (npcibus == 0 && mpacpi_active) |
| 282 | npcibus = mp_pci_scan(self, &mba.mba_pba, pcibusprint); |
| 283 | #endif |
| 284 | #if defined(MPBIOS) && defined(MPBIOS_SCANPCI) |
| 285 | if (npcibus == 0 && mpbios_scanned != 0) |
| 286 | npcibus = mp_pci_scan(self, &mba.mba_pba, pcibusprint); |
| 287 | #endif |
| 288 | if (npcibus == 0) |
| 289 | config_found_ia(self, "pcibus" , &mba.mba_pba, |
| 290 | pcibusprint); |
| 291 | |
| 292 | #if NACPICA > 0 |
| 293 | if (mp_verbose) |
| 294 | acpi_pci_link_state(); |
| 295 | #endif |
| 296 | |
| 297 | } |
| 298 | #endif |
| 299 | |
| 300 | #if NISA > 0 |
| 301 | if (isa_has_been_seen == 0) { |
| 302 | mba.mba_iba = mba_iba; |
| 303 | mba.mba_iba.iba_iot = x86_bus_space_io; |
| 304 | mba.mba_iba.iba_memt = x86_bus_space_mem; |
| 305 | config_found_ia(self, "isabus" , &mba.mba_iba, isabusprint); |
| 306 | } |
| 307 | #endif |
| 308 | |
| 309 | if (!pmf_device_register(self, NULL, NULL)) |
| 310 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 311 | } |
| 312 | |
| 313 | int |
| 314 | mainbus_print(void *aux, const char *pnp) |
| 315 | { |
| 316 | union mainbus_attach_args *mba = aux; |
| 317 | |
| 318 | if (pnp) |
| 319 | aprint_normal("%s at %s" , mba->mba_busname, pnp); |
| 320 | return (UNCONF); |
| 321 | } |
| 322 | |