madt.c revision 167814
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: head/sys/ia64/acpica/madt.c 167814 2007-03-22 18:16:43Z jkim $ 27 */ 28 29#include <contrib/dev/acpica/acpi.h> 30#include <contrib/dev/acpica/actables.h> 31 32#include <machine/md_var.h> 33 34extern u_int64_t ia64_lapic_address; 35 36struct sapic *sapic_create(int, int, u_int64_t); 37 38static void 39print_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 113void 114ia64_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 */ 203int 204ia64_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} 250