1 /* $NetBSD: madt.c,v 1.6 2023/07/13 18:43:34 mrg 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 #include <sys/mutex.h> 33 34 #include <machine/md_var.h> 35 #include <machine/sapicvar.h> 36 37 #include <dev/acpi/acpica.h> 38 #include <dev/acpi/acpivar.h> 39 #include <actables.h> 40 41 42 extern uint64_t ia64_lapic_address; 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_NAMESEG_SIZE) != 0 || 153 ACPI_FAILURE(AcpiUtChecksum((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_NAMESEG_SIZE) != 0 || 247 ACPI_FAILURE(AcpiUtChecksum((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 } 266
Indexes created Sat Sep 20 22:09:52 GMT 2025