sys/arch/xen/x86/mainbus.c

   1 /*      $NetBSD: mainbus.c,v 1.8 2009/07/29 12:02:08 cegger Exp $       */
   2 /*      NetBSD: mainbus.c,v 1.53 2003/10/27 14:11:47 junyoung Exp       */
   3
   4 /*
   5  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Christopher G. Demetriou
  18  *      for the NetBSD Project.
  19  * 4. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/cdefs.h>
  35 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.8 2009/07/29 12:02:08 cegger Exp $");
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/device.h>
  40
  41 #include <machine/bus.h>
  42
  43 #include "hypervisor.h"
  44 #include "pci.h"
  45
  46 #include "opt_xen.h"
  47 #include "opt_mpbios.h"
  48 #include "opt_pcifixup.h"
  49
  50 #include "acpica.h"
  51 #include "ioapic.h"
  52
  53 #include "ipmi.h"
  54
  55 #include <machine/cpuvar.h>
  56 #include <machine/i82093var.h>
  57
  58 #include <xen/xen.h>
  59 #include <xen/hypervisor.h>
  60
  61 #if NIPMI > 0
  62 #include <x86/ipmivar.h>
  63 #endif
  64
  65 #if NPCI > 0
  66 #include <dev/pci/pcivar.h>
  67 #if NACPICA > 0
  68 #include <dev/acpi/acpivar.h>
  69 #include <dev/acpi/acpi_madt.h>
  70 #include <xen/mpacpi.h>
  71 #endif /* NACPICA > 0 */
  72 #ifdef MPBIOS
  73 #include <machine/mpbiosvar.h>
  74 #endif /* MPBIOS */
  75 #ifdef PCI_BUS_FIXUP
  76 #include <arch/x86/pci/pci_bus_fixup.h>
  77 #ifdef PCI_ADDR_FIXUP
  78 #include <arch/x86/pci/pci_addr_fixup.h>
  79 #endif
  80 #endif
  81
  82 #if defined(MPBIOS) || NACPICA > 0
  83 struct mp_bus *mp_busses;
  84 int mp_nbus;
  85 struct mp_intr_map *mp_intrs;
  86 int mp_nintr;
  87
  88 int mp_isa_bus = -1;        /* XXX */
  89 int mp_eisa_bus = -1;      /* XXX */
  90
  91 int acpi_present = 0;
  92 int mpacpi_active = 0;
  93 #ifdef MPVERBOSE
  94 int mp_verbose = 1;
  95 #else /* MPVERBOSE */
  96 int mp_verbose = 0;
  97 #endif /* MPVERBOSE */
  98 #endif /* defined(MPBIOS) || NACPICA > 0 */
  99 #endif /* NPCI > 0 */
 100
 101
 102 int     mainbus_match(device_t, cfdata_t, void *);
 103 void    mainbus_attach(device_t, device_t, void *);
 104
 105 CFATTACH_DECL_NEW(mainbus, 0,
 106     mainbus_match, mainbus_attach, NULL, NULL);
 107
 108 int     mainbus_print(void *, const char *);
 109
 110 union mainbus_attach_args {
 111         const char *mba_busname;                /* first elem of all */
 112         struct cpu_attach_args mba_caa;
 113 #if NHYPERVISOR > 0
 114         struct hypervisor_attach_args mba_haa;
 115 #endif
 116 #if NIPMI > 0
 117         struct ipmi_attach_args mba_ipmi;
 118 #endif
 119 };
 120
 121 /*
 122  * Probe for the mainbus; always succeeds.
 123  */
 124 int
 125 mainbus_match(device_t parent, cfdata_t match, void *aux)
 126 {
 127
 128         return 1;
 129 }
 130
 131 /*
 132  * Attach the mainbus.
 133  */
 134 void
 135 mainbus_attach(device_t parent, device_t self, void *aux)
 136 {
 137         union mainbus_attach_args mba;
 138 #if defined(DOM0OPS)
 139         int numcpus = 0;
 140 #ifdef MPBIOS
 141         int mpbios_present = 0;
 142 #endif
 143 #ifdef PCI_BUS_FIXUP
 144         int pci_maxbus = 0;
 145 #endif
 146 #endif /* defined(DOM0OPS) */
 147
 148         aprint_naive("\n");
 149         aprint_normal("\n");
 150
 151 #ifdef DOM0OPS
 152         if (xendomain_is_dom0()) {
 153 #ifdef MPBIOS
 154                 mpbios_present = mpbios_probe(self);
 155 #endif
 156 #if NPCI > 0
 157                 /* ACPI needs to be able to access PCI configuration space. */
 158                 pci_mode = pci_mode_detect();
 159 #ifdef PCI_BUS_FIXUP
 160                 if (pci_mode != 0) {
 161                         pci_maxbus = pci_bus_fixup(NULL, 0);
 162                         aprint_debug_dev(self, "PCI bus max, after "
 163                             "pci_bus_fixup: %i\n", pci_maxbus);
 164 #ifdef PCI_ADDR_FIXUP
 165                         pciaddr.extent_port = NULL;
 166                         pciaddr.extent_mem = NULL;
 167                         pci_addr_fixup(NULL, pci_maxbus);
 168 #endif /* PCI_ADDR_FIXUP */
 169                 }
 170 #endif /* PCI_BUS_FIXUP */
 171 #if NACPICA > 0
 172                 acpi_present = acpi_probe();
 173                 if (acpi_present)
 174                         mpacpi_active = mpacpi_scan_apics(self, &numcpus);
 175                 if (!mpacpi_active)
 176 #endif
 177                 {
 178 #ifdef MPBIOS
 179                         if (mpbios_present)
 180                                 mpbios_scan(self, &numcpus);
 181                         else
 182 #endif
 183                         if (numcpus == 0) {
 184                                 memset(&mba.mba_caa, 0, sizeof(mba.mba_caa));
 185                                 mba.mba_caa.cpu_number = 0;
 186                                 mba.mba_caa.cpu_role = CPU_ROLE_SP;
 187                                 mba.mba_caa.cpu_func = 0;
 188                                 config_found_ia(self, "cpubus",
 189                                     &mba.mba_caa, mainbus_print);
 190                         }
 191                 }
 192 #if NIOAPIC > 0
 193         ioapic_enable();
 194 #endif
 195 #endif /* NPCI */
 196         }
 197 #endif /* DOM0OPS */
 198
 199 #if NIPMI > 0
 200         memset(&mba.mba_ipmi, 0, sizeof(mba.mba_ipmi));
 201         mba.mba_ipmi.iaa_iot = X86_BUS_SPACE_IO;
 202         mba.mba_ipmi.iaa_memt = X86_BUS_SPACE_MEM;
 203         if (ipmi_probe(&mba.mba_ipmi))
 204                 config_found_ia(self, "ipmibus", &mba.mba_ipmi, 0);
 205 #endif
 206
 207 #if NHYPERVISOR > 0
 208         mba.mba_haa.haa_busname = "hypervisor";
 209         config_found_ia(self, "hypervisorbus", &mba.mba_haa, mainbus_print);
 210 #endif
 211 }
 212
 213 int
 214 mainbus_print(void *aux, const char *pnp)
 215 {
 216         union mainbus_attach_args *mba = aux;
 217
 218         if (pnp)
 219                 aprint_normal("%s at %s", mba->mba_busname, pnp);
 220         return (UNCONF);
 221 }