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/include/acpi.h>
  30 #include <contrib/dev/acpica/include/actables.h>
  31
  32 #include <machine/md_var.h>
  33
  34 struct sapic *sapic_create(int, int, u_int64_t);
  35
  36 static void
  37 print_entry(ACPI_SUBTABLE_HEADER *entry)
  38 {
  39
  40         switch (entry->Type) {
  41         case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE: {
  42                 ACPI_MADT_INTERRUPT_OVERRIDE *iso =
  43                     (ACPI_MADT_INTERRUPT_OVERRIDE *)entry;
  44                 printf("\tInterrupt source override entry\n");
  45                 printf("\t\tBus=%u, Source=%u, Irq=0x%x\n", iso->Bus,
  46                     iso->SourceIrq, iso->GlobalIrq);
  47                 break;
  48         }
  49
  50         case ACPI_MADT_TYPE_IO_APIC:
  51                 printf("\tI/O APIC entry\n");
  52                 break;
  53
  54         case ACPI_MADT_TYPE_IO_SAPIC: {
  55                 ACPI_MADT_IO_SAPIC *sapic = (ACPI_MADT_IO_SAPIC *)entry;
  56                 printf("\tI/O SAPIC entry\n");
  57                 printf("\t\tId=0x%x, InterruptBase=0x%x, Address=0x%lx\n",
  58                     sapic->Id, sapic->GlobalIrqBase, sapic->Address);
  59                 break;
  60         }
  61
  62         case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
  63                 printf("\tLocal APIC NMI entry\n");
  64                 break;
  65
  66         case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE: {
  67                 ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic =
  68                     (ACPI_MADT_LOCAL_APIC_OVERRIDE *)entry;
  69                 printf("\tLocal APIC override entry\n");
  70                 printf("\t\tLocal APIC address=0x%jx\n", lapic->Address);
  71                 break;
  72         }
  73
  74         case ACPI_MADT_TYPE_LOCAL_SAPIC: {
  75                 ACPI_MADT_LOCAL_SAPIC *sapic = (ACPI_MADT_LOCAL_SAPIC *)entry;
  76                 printf("\tLocal SAPIC entry\n");
  77                 printf("\t\tProcessorId=0x%x, Id=0x%x, Eid=0x%x",
  78                     sapic->ProcessorId, sapic->Id, sapic->Eid);
  79                 if (!(sapic->LapicFlags & ACPI_MADT_ENABLED))
  80                         printf(" (disabled)");
  81                 printf("\n");
  82                 break;
  83         }
  84
  85         case ACPI_MADT_TYPE_NMI_SOURCE:
  86                 printf("\tNMI entry\n");
  87                 break;
  88
  89         case ACPI_MADT_TYPE_INTERRUPT_SOURCE: {
  90                 ACPI_MADT_INTERRUPT_SOURCE *pis =
  91                     (ACPI_MADT_INTERRUPT_SOURCE *)entry;
  92                 printf("\tPlatform interrupt entry\n");
  93                 printf("\t\tPolarity=%u, TriggerMode=%u, Id=0x%x, "
  94                     "Eid=0x%x, Vector=0x%x, Irq=%d\n",
  95                     pis->IntiFlags & ACPI_MADT_POLARITY_MASK,
  96                     (pis->IntiFlags & ACPI_MADT_TRIGGER_MASK) >> 2,
  97                     pis->Id, pis->Eid, pis->IoSapicVector, pis->GlobalIrq);
  98                 break;
  99         }
 100
 101         case ACPI_MADT_TYPE_LOCAL_APIC:
 102                 printf("\tLocal APIC entry\n");
 103                 break;
 104
 105         default:
 106                 printf("\tUnknown type %d entry\n", entry->Type);
 107                 break;
 108         }
 109 }
 110
 111 void
 112 ia64_probe_sapics(void)
 113 {
 114         ACPI_PHYSICAL_ADDRESS rsdp_ptr;
 115         ACPI_SUBTABLE_HEADER *entry;
 116         ACPI_TABLE_MADT *table;
 117         ACPI_TABLE_RSDP *rsdp;
 118         ACPI_TABLE_XSDT *xsdt;
 119         char *end, *p;
 120         int t, tables;
 121
 122         if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
 123                 return;
 124
 125         rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
 126         xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
 127
 128         tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
 129             xsdt->TableOffsetEntry;
 130
 131         for (t = 0; t < tables; t++) {
 132                 table = (ACPI_TABLE_MADT *)
 133                     IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);
 134
 135                 if (bootverbose)
 136                         printf("Table '%c%c%c%c' at %p\n",
 137                             table->Header.Signature[0],
 138                             table->Header.Signature[1],
 139                             table->Header.Signature[2],
 140                             table->Header.Signature[3], table);
 141
 142                 if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
 143                     ACPI_NAME_SIZE) != 0 ||
 144                     ACPI_FAILURE(AcpiTbChecksum((void *)table,
 145                     table->Header.Length)))
 146                         continue;
 147
 148                 /* Save the address of the processor interrupt block. */
 149                 if (bootverbose)
 150                         printf("\tLocal APIC address=0x%x\n", table->Address);
 151                 ia64_lapic_addr = table->Address;
 152
 153                 end = (char *)table + table->Header.Length;
 154                 p = (char *)(table + 1);
 155                 while (p < end) {
 156                         entry = (ACPI_SUBTABLE_HEADER *)p;
 157
 158                         if (bootverbose)
 159                                 print_entry(entry);
 160
 161                         switch (entry->Type) {
 162                         case ACPI_MADT_TYPE_IO_SAPIC: {
 163                                 ACPI_MADT_IO_SAPIC *sapic =
 164                                     (ACPI_MADT_IO_SAPIC *)entry;
 165                                 sapic_create(sapic->Id, sapic->GlobalIrqBase,
 166                                     sapic->Address);
 167                                 break;
 168                         }
 169
 170                         case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE: {
 171                                 ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic =
 172                                     (ACPI_MADT_LOCAL_APIC_OVERRIDE *)entry;
 173                                 ia64_lapic_addr = lapic->Address;
 174                                 break;
 175                         }
 176
 177 #ifdef SMP
 178                         case ACPI_MADT_TYPE_LOCAL_SAPIC: {
 179                                 ACPI_MADT_LOCAL_SAPIC *sapic =
 180                                     (ACPI_MADT_LOCAL_SAPIC *)entry;
 181                                 if (sapic->LapicFlags & ACPI_MADT_ENABLED)
 182                                         cpu_mp_add(sapic->ProcessorId,
 183                                             sapic->Id, sapic->Eid);
 184                                 break;
 185                         }
 186 #endif
 187
 188                         default:
 189                                 break;
 190                         }
 191
 192                         p += entry->Length;
 193                 }
 194         }
 195 }
 196
 197 /*
 198  * Count the number of local SAPIC entries in the APIC table. Every enabled
 199  * entry corresponds to a processor.
 200  */
 201 int
 202 ia64_count_cpus(void)
 203 {
 204         ACPI_PHYSICAL_ADDRESS rsdp_ptr;
 205         ACPI_MADT_LOCAL_SAPIC *entry;
 206         ACPI_TABLE_MADT *table;
 207         ACPI_TABLE_RSDP *rsdp;
 208         ACPI_TABLE_XSDT *xsdt;
 209         char *end, *p;
 210         int cpus, t, tables;
 211
 212         if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
 213                 return (0);
 214
 215         rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
 216         xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
 217
 218         tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
 219             xsdt->TableOffsetEntry;
 220
 221         cpus = 0;
 222
 223         for (t = 0; t < tables; t++) {
 224                 table = (ACPI_TABLE_MADT *)
 225                     IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);
 226
 227                 if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
 228                     ACPI_NAME_SIZE) != 0 ||
 229                     ACPI_FAILURE(AcpiTbChecksum((void *)table,
 230                         table->Header.Length)))
 231                         continue;
 232
 233                 end = (char *)table + table->Header.Length;
 234                 p = (char *)(table + 1);
 235                 while (p < end) {
 236                         entry = (ACPI_MADT_LOCAL_SAPIC *)p;
 237
 238                         if (entry->Header.Type == ACPI_MADT_TYPE_LOCAL_SAPIC &&
 239                             (entry->LapicFlags & ACPI_MADT_ENABLED))
 240                                 cpus++;
 241
 242                         p += entry->Header.Length;
 243                 }
 244         }
 245
 246         return (cpus);
 247 }