sys/arch/ia64/acpi/madt.c

   1 /*      $NetBSD: madt.c,v 1.1 2009/07/20 04:41:36 kiyohara Exp $        */
   2 /*-
   3  * Copyright (c) 2001 Doug Rabson
   4  * 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  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/ia64/acpica/madt.c,v 1.20 2007/03/22 18:16:42 jkim Exp $
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/reboot.h>
  32
  33 #include <machine/md_var.h>
  34
  35 #include <dev/acpi/acpica.h>
  36 #include <dev/acpi/acpivar.h>
  37 #include <actables.h>
  38
  39
  40 extern uint64_t ia64_lapic_address;
  41
  42 struct sapic *sapic_create(int, int, uint64_t);
  43
  44 static void
  45 print_entry(ACPI_SUBTABLE_HEADER *entry)
  46 {
  47
  48         switch (entry->Type) {
  49         case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE: {
  50                 ACPI_MADT_INTERRUPT_OVERRIDE *iso =
  51                     (ACPI_MADT_INTERRUPT_OVERRIDE *)entry;
  52                 printf("\tInterrupt source override entry\n");
  53                 printf("\t\tBus=%u, Source=%u, Irq=0x%x\n", iso->Bus,
  54                     iso->SourceIrq, iso->GlobalIrq);
  55                 break;
  56         }
  57
  58         case ACPI_MADT_TYPE_IO_APIC:
  59                 printf("\tI/O APIC entry\n");
  60                 break;
  61
  62         case ACPI_MADT_TYPE_IO_SAPIC: {
  63                 ACPI_MADT_IO_SAPIC *sapic = (ACPI_MADT_IO_SAPIC *)entry;
  64                 printf("\tI/O SAPIC entry\n");
  65                 printf("\t\tId=0x%x, InterruptBase=0x%x, Address=0x%lx\n",
  66                     sapic->Id, sapic->GlobalIrqBase, sapic->Address);
  67                 break;
  68         }
  69
  70         case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
  71                 printf("\tLocal APIC NMI entry\n");
  72                 break;
  73
  74         case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE: {
  75                 ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic =
  76                     (ACPI_MADT_LOCAL_APIC_OVERRIDE *)entry;
  77                 printf("\tLocal APIC override entry\n");
  78                 printf("\t\tLocal APIC address=0x%jx\n", lapic->Address);
  79                 break;
  80         }
  81
  82         case ACPI_MADT_TYPE_LOCAL_SAPIC: {
  83                 ACPI_MADT_LOCAL_SAPIC *sapic = (ACPI_MADT_LOCAL_SAPIC *)entry;
  84                 printf("\tLocal SAPIC entry\n");
  85                 printf("\t\tProcessorId=0x%x, Id=0x%x, Eid=0x%x",
  86                     sapic->ProcessorId, sapic->Id, sapic->Eid);
  87                 if (!(sapic->LapicFlags & ACPI_MADT_ENABLED))
  88                         printf(" (disabled)");
  89                 printf("\n");
  90                 break;
  91         }
  92
  93         case ACPI_MADT_TYPE_NMI_SOURCE:
  94                 printf("\tNMI entry\n");
  95                 break;
  96
  97         case ACPI_MADT_TYPE_INTERRUPT_SOURCE: {
  98                 ACPI_MADT_INTERRUPT_SOURCE *pis =
  99                     (ACPI_MADT_INTERRUPT_SOURCE *)entry;
 100                 printf("\tPlatform interrupt entry\n");
 101                 printf("\t\tPolarity=%u, TriggerMode=%u, Id=0x%x, "
 102                     "Eid=0x%x, Vector=0x%x, Irq=%d\n",
 103                     pis->IntiFlags & ACPI_MADT_POLARITY_MASK,
 104                     (pis->IntiFlags & ACPI_MADT_TRIGGER_MASK) >> 2,
 105                     pis->Id, pis->Eid, pis->IoSapicVector, pis->GlobalIrq);
 106                 break;
 107         }
 108
 109         case ACPI_MADT_TYPE_LOCAL_APIC:
 110                 printf("\tLocal APIC entry\n");
 111                 break;
 112
 113         default:
 114                 printf("\tUnknown type %d entry\n", entry->Type);
 115                 break;
 116         }
 117 }
 118
 119 void
 120 ia64_probe_sapics(void)
 121 {
 122         ACPI_PHYSICAL_ADDRESS rsdp_ptr;
 123         ACPI_SUBTABLE_HEADER *entry;
 124         ACPI_TABLE_MADT *table;
 125         ACPI_TABLE_RSDP *rsdp;
 126         ACPI_TABLE_XSDT *xsdt;
 127         char *end, *p;
 128         int t, tables;
 129         extern int has_i8259;
 130
 131         if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
 132                 return;
 133
 134         rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
 135         xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
 136
 137         tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
 138             xsdt->TableOffsetEntry;
 139
 140         for (t = 0; t < tables; t++) {
 141                 table = (ACPI_TABLE_MADT *)
 142                     IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);
 143
 144                 if (bootverbose)
 145                         printf("Table '%c%c%c%c' at %p\n",
 146                             table->Header.Signature[0],
 147                             table->Header.Signature[1],
 148                             table->Header.Signature[2],
 149                             table->Header.Signature[3], table);
 150
 151                 if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
 152                     ACPI_NAME_SIZE) != 0 ||
 153                     ACPI_FAILURE(AcpiTbChecksum((void *)table,
 154                     table->Header.Length)))
 155                         continue;
 156
 157                 /* Save the address of the processor interrupt block. */
 158                 if (bootverbose)
 159                         printf("\tLocal APIC address=0x%x\n", table->Address);
 160                 ia64_lapic_address = table->Address;
 161
 162                 if (table->Flags & ACPI_MADT_PCAT_COMPAT)
 163                         has_i8259 = 1;
 164
 165                 end = (char *)table + table->Header.Length;
 166                 p = (char *)(table + 1);
 167                 while (p < end) {
 168                         entry = (ACPI_SUBTABLE_HEADER *)p;
 169
 170                         if (bootverbose)
 171                                 print_entry(entry);
 172
 173                         switch (entry->Type) {
 174                         case ACPI_MADT_TYPE_IO_SAPIC:
 175                         {
 176                                 ACPI_MADT_IO_SAPIC *sapic =
 177                                     (ACPI_MADT_IO_SAPIC *)entry;
 178
 179                                 sapic_create(sapic->Id, sapic->GlobalIrqBase,
 180                                     sapic->Address);
 181                                 break;
 182                         }
 183
 184                         case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE:
 185                         {
 186                                 ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic =
 187                                     (ACPI_MADT_LOCAL_APIC_OVERRIDE *)entry;
 188
 189                                 ia64_lapic_address = lapic->Address;
 190                                 break;
 191                         }
 192
 193 #ifdef MULTIPROCESSOR
 194                         case ACPI_MADT_TYPE_LOCAL_SAPIC:
 195                         {
 196                                 ACPI_MADT_LOCAL_SAPIC *sapic =
 197                                     (ACPI_MADT_LOCAL_SAPIC *)entry;
 198
 199                                 if (sapic->LapicFlags & ACPI_MADT_ENABLED)
 200                                         cpu_mp_add(sapic->ProcessorId,
 201                                             sapic->Id, sapic->Eid);
 202                                 break;
 203                         }
 204 #endif
 205
 206                         default:
 207                                 break;
 208                         }
 209
 210                         p += entry->Length;
 211                 }
 212         }
 213 }
 214
 215 /*
 216  * Count the number of local SAPIC entries in the APIC table. Every enabled
 217  * entry corresponds to a processor.
 218  */
 219 int
 220 ia64_count_cpus(void)
 221 {
 222         ACPI_PHYSICAL_ADDRESS rsdp_ptr;
 223         ACPI_MADT_LOCAL_SAPIC *entry;
 224         ACPI_TABLE_MADT *table;
 225         ACPI_TABLE_RSDP *rsdp;
 226         ACPI_TABLE_XSDT *xsdt;
 227         char *end, *p;
 228         int cpus, t, tables;
 229
 230         if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
 231                 return 0;
 232
 233         rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
 234         xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
 235
 236         tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
 237             xsdt->TableOffsetEntry;
 238
 239         cpus = 0;
 240
 241         for (t = 0; t < tables; t++) {
 242                 table = (ACPI_TABLE_MADT *)
 243                     IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);
 244
 245                 if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
 246                     ACPI_NAME_SIZE) != 0 ||
 247                     ACPI_FAILURE(AcpiTbChecksum((void *)table,
 248                         table->Header.Length)))
 249                         continue;
 250
 251                 end = (char *)table + table->Header.Length;
 252                 p = (char *)(table + 1);
 253                 while (p < end) {
 254                         entry = (ACPI_MADT_LOCAL_SAPIC *)p;
 255
 256                         if (entry->Header.Type == ACPI_MADT_TYPE_LOCAL_SAPIC &&
 257                             (entry->LapicFlags & ACPI_MADT_ENABLED))
 258                                 cpus++;
 259
 260                         p += entry->Header.Length;
 261                 }
 262         }
 263
 264         return cpus;
 265 }