sys/ia64/acpica/madt.c

   1 /*-
   2  * Copyright (c) 2001 Doug Rabson
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #include <contrib/dev/acpica/acpi.h>
  30 #include <contrib/dev/acpica/actables.h>
  31
  32 #include <machine/md_var.h>
  33
  34 extern u_int64_t ia64_lapic_address;
  35
  36 struct sapic *sapic_create(int, int, u_int64_t);
  37
  38 static void
  39 print_entry(ACPI_SUBTABLE_HEADER *entry)
  40 {
  41
  42         switch (entry->Type) {
  43         case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE: {
  44                 ACPI_MADT_INTERRUPT_OVERRIDE *iso =
  45                     (ACPI_MADT_INTERRUPT_OVERRIDE *)entry;
  46                 printf("\tInterrupt source override entry\n");
  47                 printf("\t\tBus=%u, Source=%u, Irq=0x%x\n", iso->Bus,
  48                     iso->SourceIrq, iso->GlobalIrq);
  49                 break;
  50         }
  51
  52         case ACPI_MADT_TYPE_IO_APIC:
  53                 printf("\tI/O APIC entry\n");
  54                 break;
  55
  56         case ACPI_MADT_TYPE_IO_SAPIC: {
  57                 ACPI_MADT_IO_SAPIC *sapic = (ACPI_MADT_IO_SAPIC *)entry;
  58                 printf("\tI/O SAPIC entry\n");
  59                 printf("\t\tId=0x%x, InterruptBase=0x%x, Address=0x%lx\n",
  60                     sapic->Id, sapic->GlobalIrqBase, sapic->Address);
  61                 break;
  62         }
  63
  64         case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
  65                 printf("\tLocal APIC NMI entry\n");
  66                 break;
  67
  68         case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE: {
  69                 ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic =
  70                     (ACPI_MADT_LOCAL_APIC_OVERRIDE *)entry;
  71                 printf("\tLocal APIC override entry\n");
  72                 printf("\t\tLocal APIC address=0x%jx\n", lapic->Address);
  73                 break;
  74         }
  75
  76         case ACPI_MADT_TYPE_LOCAL_SAPIC: {
  77                 ACPI_MADT_LOCAL_SAPIC *sapic = (ACPI_MADT_LOCAL_SAPIC *)entry;
  78                 printf("\tLocal SAPIC entry\n");
  79                 printf("\t\tProcessorId=0x%x, Id=0x%x, Eid=0x%x",
  80                     sapic->ProcessorId, sapic->Id, sapic->Eid);
  81                 if (!(sapic->LapicFlags & ACPI_MADT_ENABLED))
  82                         printf(" (disabled)");
  83                 printf("\n");
  84                 break;
  85         }
  86
  87         case ACPI_MADT_TYPE_NMI_SOURCE:
  88                 printf("\tNMI entry\n");
  89                 break;
  90
  91         case ACPI_MADT_TYPE_INTERRUPT_SOURCE: {
  92                 ACPI_MADT_INTERRUPT_SOURCE *pis =
  93                     (ACPI_MADT_INTERRUPT_SOURCE *)entry;
  94                 printf("\tPlatform interrupt entry\n");
  95                 printf("\t\tPolarity=%u, TriggerMode=%u, Id=0x%x, "
  96                     "Eid=0x%x, Vector=0x%x, Irq=%d\n",
  97                     pis->IntiFlags & ACPI_MADT_POLARITY_MASK,
  98                     (pis->IntiFlags & ACPI_MADT_TRIGGER_MASK) >> 2,
  99                     pis->Id, pis->Eid, pis->IoSapicVector, pis->GlobalIrq);
 100                 break;
 101         }
 102
 103         case ACPI_MADT_TYPE_LOCAL_APIC:
 104                 printf("\tLocal APIC entry\n");
 105                 break;
 106
 107         default:
 108                 printf("\tUnknown type %d entry\n", entry->Type);
 109                 break;
 110         }
 111 }
 112
 113 void
 114 ia64_probe_sapics(void)
 115 {
 116         ACPI_PHYSICAL_ADDRESS rsdp_ptr;
 117         ACPI_SUBTABLE_HEADER *entry;
 118         ACPI_TABLE_MADT *table;
 119         ACPI_TABLE_RSDP *rsdp;
 120         ACPI_TABLE_XSDT *xsdt;
 121         char *end, *p;
 122         int t, tables;
 123
 124         if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
 125                 return;
 126
 127         rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
 128         xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
 129
 130         tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
 131             xsdt->TableOffsetEntry;
 132
 133         for (t = 0; t < tables; t++) {
 134                 table = (ACPI_TABLE_MADT *)
 135                     IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);
 136
 137                 if (bootverbose)
 138                         printf("Table '%c%c%c%c' at %p\n",
 139                             table->Header.Signature[0],
 140                             table->Header.Signature[1],
 141                             table->Header.Signature[2],
 142                             table->Header.Signature[3], table);
 143
 144                 if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
 145                     ACPI_NAME_SIZE) != 0 ||
 146                     ACPI_FAILURE(AcpiTbChecksum((void *)table,
 147                     table->Header.Length)))
 148                         continue;
 149
 150                 /* Save the address of the processor interrupt block. */
 151                 if (bootverbose)
 152                         printf("\tLocal APIC address=0x%x\n", table->Address);
 153                 ia64_lapic_address = table->Address;
 154
 155                 end = (char *)table + table->Header.Length;
 156                 p = (char *)(table + 1);
 157                 while (p < end) {
 158                         entry = (ACPI_SUBTABLE_HEADER *)p;
 159
 160                         if (bootverbose)
 161                                 print_entry(entry);
 162
 163                         switch (entry->Type) {
 164                         case ACPI_MADT_TYPE_IO_SAPIC: {
 165                                 ACPI_MADT_IO_SAPIC *sapic =
 166                                     (ACPI_MADT_IO_SAPIC *)entry;
 167                                 sapic_create(sapic->Id, sapic->GlobalIrqBase,
 168                                     sapic->Address);
 169                                 break;
 170                         }
 171
 172                         case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE: {
 173                                 ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic =
 174                                     (ACPI_MADT_LOCAL_APIC_OVERRIDE *)entry;
 175                                 ia64_lapic_address = lapic->Address;
 176                                 break;
 177                         }
 178
 179 #ifdef SMP
 180                         case ACPI_MADT_TYPE_LOCAL_SAPIC: {
 181                                 ACPI_MADT_LOCAL_SAPIC *sapic =
 182                                     (ACPI_MADT_LOCAL_SAPIC *)entry;
 183                                 if (sapic->LapicFlags & ACPI_MADT_ENABLED)
 184                                         cpu_mp_add(sapic->ProcessorId,
 185                                             sapic->Id, sapic->Eid);
 186                                 break;
 187                         }
 188 #endif
 189
 190                         default:
 191                                 break;
 192                         }
 193
 194                         p += entry->Length;
 195                 }
 196         }
 197 }
 198
 199 /*
 200  * Count the number of local SAPIC entries in the APIC table. Every enabled
 201  * entry corresponds to a processor.
 202  */
 203 int
 204 ia64_count_cpus(void)
 205 {
 206         ACPI_PHYSICAL_ADDRESS rsdp_ptr;
 207         ACPI_MADT_LOCAL_SAPIC *entry;
 208         ACPI_TABLE_MADT *table;
 209         ACPI_TABLE_RSDP *rsdp;
 210         ACPI_TABLE_XSDT *xsdt;
 211         char *end, *p;
 212         int cpus, t, tables;
 213
 214         if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
 215                 return (0);
 216
 217         rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
 218         xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
 219
 220         tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
 221             xsdt->TableOffsetEntry;
 222
 223         cpus = 0;
 224
 225         for (t = 0; t < tables; t++) {
 226                 table = (ACPI_TABLE_MADT *)
 227                     IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);
 228
 229                 if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
 230                     ACPI_NAME_SIZE) != 0 ||
 231                     ACPI_FAILURE(AcpiTbChecksum((void *)table,
 232                         table->Header.Length)))
 233                         continue;
 234
 235                 end = (char *)table + table->Header.Length;
 236                 p = (char *)(table + 1);
 237                 while (p < end) {
 238                         entry = (ACPI_MADT_LOCAL_SAPIC *)p;
 239
 240                         if (entry->Header.Type == ACPI_MADT_TYPE_LOCAL_SAPIC &&
 241                             (entry->LapicFlags & ACPI_MADT_ENABLED))
 242                                 cpus++;
 243
 244                         p += entry->Header.Length;
 245                 }
 246         }
 247
 248         return (cpus);
 249 }