usr.sbin/acpi/acpidump/acpi.c

   1 /*-
   2  * Copyright (c) 1998 Doug Rabson
   3  * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
   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  *      $FreeBSD$
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/endian.h>
  32 #include <sys/stat.h>
  33 #include <sys/wait.h>
  34 #include <assert.h>
  35 #include <err.h>
  36 #include <fcntl.h>
  37 #include <paths.h>
  38 #include <stdio.h>
  39 #include <stdint.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <unistd.h>
  43
  44 #include "acpidump.h"
  45
  46 #define BEGIN_COMMENT   "/*\n"
  47 #define END_COMMENT     " */\n"
  48
  49 static void     acpi_print_string(char *s, size_t length);
  50 static void     acpi_print_gas(ACPI_GENERIC_ADDRESS *gas);
  51 static int      acpi_get_fadt_revision(ACPI_TABLE_FADT *fadt);
  52 static void     acpi_handle_fadt(ACPI_TABLE_HEADER *fadt);
  53 static void     acpi_print_cpu(u_char cpu_id);
  54 static void     acpi_print_cpu_uid(uint32_t uid, char *uid_string);
  55 static void     acpi_print_local_apic(uint32_t apic_id, uint32_t flags);
  56 static void     acpi_print_io_apic(uint32_t apic_id, uint32_t int_base,
  57                     uint64_t apic_addr);
  58 static void     acpi_print_mps_flags(uint16_t flags);
  59 static void     acpi_print_intr(uint32_t intr, uint16_t mps_flags);
  60 static void     acpi_print_local_nmi(u_int lint, uint16_t mps_flags);
  61 static void     acpi_print_madt(ACPI_SUBTABLE_HEADER *mp);
  62 static void     acpi_handle_madt(ACPI_TABLE_HEADER *sdp);
  63 static void     acpi_handle_ecdt(ACPI_TABLE_HEADER *sdp);
  64 static void     acpi_handle_hpet(ACPI_TABLE_HEADER *sdp);
  65 static void     acpi_handle_mcfg(ACPI_TABLE_HEADER *sdp);
  66 static void     acpi_print_srat_cpu(uint32_t apic_id, uint32_t proximity_domain,
  67                     uint32_t flags);
  68 static void     acpi_print_srat_memory(ACPI_SRAT_MEM_AFFINITY *mp);
  69 static void     acpi_print_srat(ACPI_SUBTABLE_HEADER *srat);
  70 static void     acpi_handle_srat(ACPI_TABLE_HEADER *sdp);
  71 static void     acpi_print_sdt(ACPI_TABLE_HEADER *sdp);
  72 static void     acpi_print_fadt(ACPI_TABLE_HEADER *sdp);
  73 static void     acpi_print_facs(ACPI_TABLE_FACS *facs);
  74 static void     acpi_print_dsdt(ACPI_TABLE_HEADER *dsdp);
  75 static ACPI_TABLE_HEADER *acpi_map_sdt(vm_offset_t pa);
  76 static void     acpi_print_rsd_ptr(ACPI_TABLE_RSDP *rp);
  77 static void     acpi_handle_rsdt(ACPI_TABLE_HEADER *rsdp);
  78 static void     acpi_walk_subtables(ACPI_TABLE_HEADER *table, void *first,
  79                     void (*action)(ACPI_SUBTABLE_HEADER *));
  80
  81 /* Size of an address. 32-bit for ACPI 1.0, 64-bit for ACPI 2.0 and up. */
  82 static int addr_size;
  83
  84 static void
  85 acpi_print_string(char *s, size_t length)
  86 {
  87         int     c;
  88
  89         /* Trim trailing spaces and NULLs */
  90         while (length > 0 && (s[length - 1] == ' ' || s[length - 1] == '\0'))
  91                 length--;
  92
  93         while (length--) {
  94                 c = *s++;
  95                 putchar(c);
  96         }
  97 }
  98
  99 static void
 100 acpi_print_gas(ACPI_GENERIC_ADDRESS *gas)
 101 {
 102         switch(gas->SpaceId) {
 103         case ACPI_GAS_MEMORY:
 104                 printf("0x%08lx:%u[%u] (Memory)", (u_long)gas->Address,
 105                        gas->BitOffset, gas->BitWidth);
 106                 break;
 107         case ACPI_GAS_IO:
 108                 printf("0x%02lx:%u[%u] (IO)", (u_long)gas->Address,
 109                        gas->BitOffset, gas->BitWidth);
 110                 break;
 111         case ACPI_GAS_PCI:
 112                 printf("%x:%x+0x%x (PCI)", (uint16_t)(gas->Address >> 32),
 113                        (uint16_t)((gas->Address >> 16) & 0xffff),
 114                        (uint16_t)gas->Address);
 115                 break;
 116         /* XXX How to handle these below? */
 117         case ACPI_GAS_EMBEDDED:
 118                 printf("0x%x:%u[%u] (EC)", (uint16_t)gas->Address,
 119                        gas->BitOffset, gas->BitWidth);
 120                 break;
 121         case ACPI_GAS_SMBUS:
 122                 printf("0x%x:%u[%u] (SMBus)", (uint16_t)gas->Address,
 123                        gas->BitOffset, gas->BitWidth);
 124                 break;
 125         case ACPI_GAS_CMOS:
 126         case ACPI_GAS_PCIBAR:
 127         case ACPI_GAS_DATATABLE:
 128         case ACPI_GAS_FIXED:
 129         default:
 130                 printf("0x%08lx (?)", (u_long)gas->Address);
 131                 break;
 132         }
 133 }
 134
 135 /* The FADT revision indicates whether we use the DSDT or X_DSDT addresses. */
 136 static int
 137 acpi_get_fadt_revision(ACPI_TABLE_FADT *fadt)
 138 {
 139         int fadt_revision;
 140
 141         /* Set the FADT revision separately from the RSDP version. */
 142         if (addr_size == 8) {
 143                 fadt_revision = 2;
 144
 145                 /*
 146                  * A few systems (e.g., IBM T23) have an RSDP that claims
 147                  * revision 2 but the 64 bit addresses are invalid.  If
 148                  * revision 2 and the 32 bit address is non-zero but the
 149                  * 32 and 64 bit versions don't match, prefer the 32 bit
 150                  * version for all subsequent tables.
 151                  */
 152                 if (fadt->Facs != 0 &&
 153                     (fadt->XFacs & 0xffffffff) != fadt->Facs)
 154                         fadt_revision = 1;
 155         } else
 156                 fadt_revision = 1;
 157         return (fadt_revision);
 158 }
 159
 160 static void
 161 acpi_handle_fadt(ACPI_TABLE_HEADER *sdp)
 162 {
 163         ACPI_TABLE_HEADER *dsdp;
 164         ACPI_TABLE_FACS *facs;
 165         ACPI_TABLE_FADT *fadt;
 166         int             fadt_revision;
 167
 168         fadt = (ACPI_TABLE_FADT *)sdp;
 169         acpi_print_fadt(sdp);
 170
 171         fadt_revision = acpi_get_fadt_revision(fadt);
 172         if (fadt_revision == 1)
 173                 facs = (ACPI_TABLE_FACS *)acpi_map_sdt(fadt->Facs);
 174         else
 175                 facs = (ACPI_TABLE_FACS *)acpi_map_sdt(fadt->XFacs);
 176         if (memcmp(facs->Signature, ACPI_SIG_FACS, 4) != 0 || facs->Length < 64)
 177                 errx(1, "FACS is corrupt");
 178         acpi_print_facs(facs);
 179
 180         if (fadt_revision == 1)
 181                 dsdp = (ACPI_TABLE_HEADER *)acpi_map_sdt(fadt->Dsdt);
 182         else
 183                 dsdp = (ACPI_TABLE_HEADER *)acpi_map_sdt(fadt->XDsdt);
 184         if (acpi_checksum(dsdp, dsdp->Length))
 185                 errx(1, "DSDT is corrupt");
 186         acpi_print_dsdt(dsdp);
 187 }
 188
 189 static void
 190 acpi_walk_subtables(ACPI_TABLE_HEADER *table, void *first,
 191     void (*action)(ACPI_SUBTABLE_HEADER *))
 192 {
 193         ACPI_SUBTABLE_HEADER *subtable;
 194         char *end;
 195
 196         subtable = first;
 197         end = (char *)table + table->Length;
 198         while ((char *)subtable < end) {
 199                 printf("\n");
 200                 action(subtable);
 201                 subtable = (ACPI_SUBTABLE_HEADER *)((char *)subtable +
 202                     subtable->Length);
 203         }
 204 }
 205
 206 static void
 207 acpi_print_cpu(u_char cpu_id)
 208 {
 209
 210         printf("\tACPI CPU=");
 211         if (cpu_id == 0xff)
 212                 printf("ALL\n");
 213         else
 214                 printf("%d\n", (u_int)cpu_id);
 215 }
 216
 217 static void
 218 acpi_print_cpu_uid(uint32_t uid, char *uid_string)
 219 {
 220
 221         printf("\tUID=%d", uid);
 222         if (uid_string != NULL)
 223                 printf(" (%s)", uid_string);
 224         printf("\n");
 225 }
 226
 227 static void
 228 acpi_print_local_apic(uint32_t apic_id, uint32_t flags)
 229 {
 230
 231         printf("\tFlags={");
 232         if (flags & ACPI_MADT_ENABLED)
 233                 printf("ENABLED");
 234         else
 235                 printf("DISABLED");
 236         printf("}\n");
 237         printf("\tAPIC ID=%d\n", apic_id);
 238 }
 239
 240 static void
 241 acpi_print_io_apic(uint32_t apic_id, uint32_t int_base, uint64_t apic_addr)
 242 {
 243
 244         printf("\tAPIC ID=%d\n", apic_id);
 245         printf("\tINT BASE=%d\n", int_base);
 246         printf("\tADDR=0x%016jx\n", (uintmax_t)apic_addr);
 247 }
 248
 249 static void
 250 acpi_print_mps_flags(uint16_t flags)
 251 {
 252
 253         printf("\tFlags={Polarity=");
 254         switch (flags & ACPI_MADT_POLARITY_MASK) {
 255         case ACPI_MADT_POLARITY_CONFORMS:
 256                 printf("conforming");
 257                 break;
 258         case ACPI_MADT_POLARITY_ACTIVE_HIGH:
 259                 printf("active-hi");
 260                 break;
 261         case ACPI_MADT_POLARITY_ACTIVE_LOW:
 262                 printf("active-lo");
 263                 break;
 264         default:
 265                 printf("0x%x", flags & ACPI_MADT_POLARITY_MASK);
 266                 break;
 267         }
 268         printf(", Trigger=");
 269         switch (flags & ACPI_MADT_TRIGGER_MASK) {
 270         case ACPI_MADT_TRIGGER_CONFORMS:
 271                 printf("conforming");
 272                 break;
 273         case ACPI_MADT_TRIGGER_EDGE:
 274                 printf("edge");
 275                 break;
 276         case ACPI_MADT_TRIGGER_LEVEL:
 277                 printf("level");
 278                 break;
 279         default:
 280                 printf("0x%x", (flags & ACPI_MADT_TRIGGER_MASK) >> 2);
 281         }
 282         printf("}\n");
 283 }
 284
 285 static void
 286 acpi_print_intr(uint32_t intr, uint16_t mps_flags)
 287 {
 288
 289         printf("\tINTR=%d\n", intr);
 290         acpi_print_mps_flags(mps_flags);
 291 }
 292
 293 static void
 294 acpi_print_local_nmi(u_int lint, uint16_t mps_flags)
 295 {
 296
 297         printf("\tLINT Pin=%d\n", lint);
 298         acpi_print_mps_flags(mps_flags);
 299 }
 300
 301 const char *apic_types[] = { "Local APIC", "IO APIC", "INT Override", "NMI",
 302                              "Local APIC NMI", "Local APIC Override",
 303                              "IO SAPIC", "Local SAPIC", "Platform Interrupt",
 304                              "Local X2APIC", "Local X2APIC NMI" };
 305 const char *platform_int_types[] = { "0 (unknown)", "PMI", "INIT",
 306                                      "Corrected Platform Error" };
 307
 308 static void
 309 acpi_print_madt(ACPI_SUBTABLE_HEADER *mp)
 310 {
 311         ACPI_MADT_LOCAL_APIC *lapic;
 312         ACPI_MADT_IO_APIC *ioapic;
 313         ACPI_MADT_INTERRUPT_OVERRIDE *over;
 314         ACPI_MADT_NMI_SOURCE *nmi;
 315         ACPI_MADT_LOCAL_APIC_NMI *lapic_nmi;
 316         ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic_over;
 317         ACPI_MADT_IO_SAPIC *iosapic;
 318         ACPI_MADT_LOCAL_SAPIC *lsapic;
 319         ACPI_MADT_INTERRUPT_SOURCE *isrc;
 320         ACPI_MADT_LOCAL_X2APIC *x2apic;
 321         ACPI_MADT_LOCAL_X2APIC_NMI *x2apic_nmi;
 322
 323         if (mp->Type < sizeof(apic_types) / sizeof(apic_types[0]))
 324                 printf("\tType=%s\n", apic_types[mp->Type]);
 325         else
 326                 printf("\tType=%d (unknown)\n", mp->Type);
 327         switch (mp->Type) {
 328         case ACPI_MADT_TYPE_LOCAL_APIC:
 329                 lapic = (ACPI_MADT_LOCAL_APIC *)mp;
 330                 acpi_print_cpu(lapic->ProcessorId);
 331                 acpi_print_local_apic(lapic->Id, lapic->LapicFlags);
 332                 break;
 333         case ACPI_MADT_TYPE_IO_APIC:
 334                 ioapic = (ACPI_MADT_IO_APIC *)mp;
 335                 acpi_print_io_apic(ioapic->Id, ioapic->GlobalIrqBase,
 336                     ioapic->Address);
 337                 break;
 338         case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE:
 339                 over = (ACPI_MADT_INTERRUPT_OVERRIDE *)mp;
 340                 printf("\tBUS=%d\n", (u_int)over->Bus);
 341                 printf("\tIRQ=%d\n", (u_int)over->SourceIrq);
 342                 acpi_print_intr(over->GlobalIrq, over->IntiFlags);
 343                 break;
 344         case ACPI_MADT_TYPE_NMI_SOURCE:
 345                 nmi = (ACPI_MADT_NMI_SOURCE *)mp;
 346                 acpi_print_intr(nmi->GlobalIrq, nmi->IntiFlags);
 347                 break;
 348         case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
 349                 lapic_nmi = (ACPI_MADT_LOCAL_APIC_NMI *)mp;
 350                 acpi_print_cpu(lapic_nmi->ProcessorId);
 351                 acpi_print_local_nmi(lapic_nmi->Lint, lapic_nmi->IntiFlags);
 352                 break;
 353         case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE:
 354                 lapic_over = (ACPI_MADT_LOCAL_APIC_OVERRIDE *)mp;
 355                 printf("\tLocal APIC ADDR=0x%016jx\n",
 356                     (uintmax_t)lapic_over->Address);
 357                 break;
 358         case ACPI_MADT_TYPE_IO_SAPIC:
 359                 iosapic = (ACPI_MADT_IO_SAPIC *)mp;
 360                 acpi_print_io_apic(iosapic->Id, iosapic->GlobalIrqBase,
 361                     iosapic->Address);
 362                 break;
 363         case ACPI_MADT_TYPE_LOCAL_SAPIC:
 364                 lsapic = (ACPI_MADT_LOCAL_SAPIC *)mp;
 365                 acpi_print_cpu(lsapic->ProcessorId);
 366                 acpi_print_local_apic(lsapic->Id, lsapic->LapicFlags);
 367                 printf("\tAPIC EID=%d\n", (u_int)lsapic->Eid);
 368                 if (mp->Length > __offsetof(ACPI_MADT_LOCAL_SAPIC, Uid))
 369                         acpi_print_cpu_uid(lsapic->Uid, lsapic->UidString);
 370                 break;
 371         case ACPI_MADT_TYPE_INTERRUPT_SOURCE:
 372                 isrc = (ACPI_MADT_INTERRUPT_SOURCE *)mp;
 373                 if (isrc->Type < sizeof(platform_int_types) /
 374                     sizeof(platform_int_types[0]))
 375                         printf("\tType=%s\n", platform_int_types[isrc->Type]);
 376                 else
 377                         printf("\tType=%d (unknown)\n", isrc->Type);
 378                 printf("\tAPIC ID=%d\n", (u_int)isrc->Id);
 379                 printf("\tAPIC EID=%d\n", (u_int)isrc->Eid);
 380                 printf("\tSAPIC Vector=%d\n", (u_int)isrc->IoSapicVector);
 381                 acpi_print_intr(isrc->GlobalIrq, isrc->IntiFlags);
 382                 break;
 383         case ACPI_MADT_TYPE_LOCAL_X2APIC:
 384                 x2apic = (ACPI_MADT_LOCAL_X2APIC *)mp;
 385                 acpi_print_cpu_uid(x2apic->Uid, NULL);
 386                 acpi_print_local_apic(x2apic->LocalApicId, x2apic->LapicFlags);
 387                 break;
 388         case ACPI_MADT_TYPE_LOCAL_X2APIC_NMI:
 389                 x2apic_nmi = (ACPI_MADT_LOCAL_X2APIC_NMI *)mp;
 390                 acpi_print_cpu_uid(x2apic_nmi->Uid, NULL);
 391                 acpi_print_local_nmi(x2apic_nmi->Lint, x2apic_nmi->IntiFlags);
 392                 break;
 393         }
 394 }
 395
 396 static void
 397 acpi_handle_madt(ACPI_TABLE_HEADER *sdp)
 398 {
 399         ACPI_TABLE_MADT *madt;
 400
 401         printf(BEGIN_COMMENT);
 402         acpi_print_sdt(sdp);
 403         madt = (ACPI_TABLE_MADT *)sdp;
 404         printf("\tLocal APIC ADDR=0x%08x\n", madt->Address);
 405         printf("\tFlags={");
 406         if (madt->Flags & ACPI_MADT_PCAT_COMPAT)
 407                 printf("PC-AT");
 408         printf("}\n");
 409         acpi_walk_subtables(sdp, (madt + 1), acpi_print_madt);
 410         printf(END_COMMENT);
 411 }
 412
 413 static void
 414 acpi_handle_hpet(ACPI_TABLE_HEADER *sdp)
 415 {
 416         ACPI_TABLE_HPET *hpet;
 417
 418         printf(BEGIN_COMMENT);
 419         acpi_print_sdt(sdp);
 420         hpet = (ACPI_TABLE_HPET *)sdp;
 421         printf("\tHPET Number=%d\n", hpet->Sequence);
 422         printf("\tADDR=");
 423         acpi_print_gas(&hpet->Address);
 424         printf("\tHW Rev=0x%x\n", hpet->Id & ACPI_HPET_ID_HARDWARE_REV_ID);
 425         printf("\tComparators=%d\n", (hpet->Id & ACPI_HPET_ID_COMPARATORS) >>
 426             8);
 427         printf("\tCounter Size=%d\n", hpet->Id & ACPI_HPET_ID_COUNT_SIZE_CAP ?
 428             1 : 0);
 429         printf("\tLegacy IRQ routing capable={");
 430         if (hpet->Id & ACPI_HPET_ID_LEGACY_CAPABLE)
 431                 printf("TRUE}\n");
 432         else
 433                 printf("FALSE}\n");
 434         printf("\tPCI Vendor ID=0x%04x\n", hpet->Id >> 16);
 435         printf("\tMinimal Tick=%d\n", hpet->MinimumTick);
 436         printf(END_COMMENT);
 437 }
 438
 439 static void
 440 acpi_handle_ecdt(ACPI_TABLE_HEADER *sdp)
 441 {
 442         ACPI_TABLE_ECDT *ecdt;
 443
 444         printf(BEGIN_COMMENT);
 445         acpi_print_sdt(sdp);
 446         ecdt = (ACPI_TABLE_ECDT *)sdp;
 447         printf("\tEC_CONTROL=");
 448         acpi_print_gas(&ecdt->Control);
 449         printf("\n\tEC_DATA=");
 450         acpi_print_gas(&ecdt->Data);
 451         printf("\n\tUID=%#x, ", ecdt->Uid);
 452         printf("GPE_BIT=%#x\n", ecdt->Gpe);
 453         printf("\tEC_ID=%s\n", ecdt->Id);
 454         printf(END_COMMENT);
 455 }
 456
 457 static void
 458 acpi_handle_mcfg(ACPI_TABLE_HEADER *sdp)
 459 {
 460         ACPI_TABLE_MCFG *mcfg;
 461         ACPI_MCFG_ALLOCATION *alloc;
 462         u_int i, entries;
 463
 464         printf(BEGIN_COMMENT);
 465         acpi_print_sdt(sdp);
 466         mcfg = (ACPI_TABLE_MCFG *)sdp;
 467         entries = (sdp->Length - sizeof(ACPI_TABLE_MCFG)) /
 468             sizeof(ACPI_MCFG_ALLOCATION);
 469         alloc = (ACPI_MCFG_ALLOCATION *)(mcfg + 1);
 470         for (i = 0; i < entries; i++, alloc++) {
 471                 printf("\n");
 472                 printf("\tBase Address=0x%016jx\n", alloc->Address);
 473                 printf("\tSegment Group=0x%04x\n", alloc->PciSegment);
 474                 printf("\tStart Bus=%d\n", alloc->StartBusNumber);
 475                 printf("\tEnd Bus=%d\n", alloc->EndBusNumber);
 476         }
 477         printf(END_COMMENT);
 478 }
 479
 480 static void
 481 acpi_print_srat_cpu(uint32_t apic_id, uint32_t proximity_domain,
 482     uint32_t flags)
 483 {
 484
 485         printf("\tFlags={");
 486         if (flags & ACPI_SRAT_CPU_ENABLED)
 487                 printf("ENABLED");
 488         else
 489                 printf("DISABLED");
 490         printf("}\n");
 491         printf("\tAPIC ID=%d\n", apic_id);
 492         printf("\tProximity Domain=%d\n", proximity_domain);
 493 }
 494
 495 static void
 496 acpi_print_srat_memory(ACPI_SRAT_MEM_AFFINITY *mp)
 497 {
 498
 499         printf("\tFlags={");
 500         if (mp->Flags & ACPI_SRAT_MEM_ENABLED)
 501                 printf("ENABLED");
 502         else
 503                 printf("DISABLED");
 504         if (mp->Flags & ACPI_SRAT_MEM_HOT_PLUGGABLE)
 505                 printf(",HOT_PLUGGABLE");
 506         if (mp->Flags & ACPI_SRAT_MEM_NON_VOLATILE)
 507                 printf(",NON_VOLATILE");
 508         printf("}\n");
 509         printf("\tBase Address=0x%016jx\n", (uintmax_t)mp->BaseAddress);
 510         printf("\tLength=0x%016jx\n", (uintmax_t)mp->Length);
 511         printf("\tProximity Domain=%d\n", mp->ProximityDomain);
 512 }
 513
 514 const char *srat_types[] = { "CPU", "Memory", "X2APIC" };
 515
 516 static void
 517 acpi_print_srat(ACPI_SUBTABLE_HEADER *srat)
 518 {
 519         ACPI_SRAT_CPU_AFFINITY *cpu;
 520         ACPI_SRAT_X2APIC_CPU_AFFINITY *x2apic;
 521
 522         if (srat->Type < sizeof(srat_types) / sizeof(srat_types[0]))
 523                 printf("\tType=%s\n", srat_types[srat->Type]);
 524         else
 525                 printf("\tType=%d (unknown)\n", srat->Type);
 526         switch (srat->Type) {
 527         case ACPI_SRAT_TYPE_CPU_AFFINITY:
 528                 cpu = (ACPI_SRAT_CPU_AFFINITY *)srat;
 529                 acpi_print_srat_cpu(cpu->ApicId,
 530                     cpu->ProximityDomainHi[2] << 24 |
 531                     cpu->ProximityDomainHi[1] << 16 |
 532                     cpu->ProximityDomainHi[0] << 0 |
 533                     cpu->ProximityDomainLo, cpu->Flags);
 534                 break;
 535         case ACPI_SRAT_TYPE_MEMORY_AFFINITY:
 536                 acpi_print_srat_memory((ACPI_SRAT_MEM_AFFINITY *)srat);
 537                 break;
 538         case ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY:
 539                 x2apic = (ACPI_SRAT_X2APIC_CPU_AFFINITY *)srat;
 540                 acpi_print_srat_cpu(x2apic->ApicId, x2apic->ProximityDomain,
 541                     x2apic->Flags);
 542                 break;
 543         }
 544 }
 545
 546 static void
 547 acpi_handle_srat(ACPI_TABLE_HEADER *sdp)
 548 {
 549         ACPI_TABLE_SRAT *srat;
 550
 551         printf(BEGIN_COMMENT);
 552         acpi_print_sdt(sdp);
 553         srat = (ACPI_TABLE_SRAT *)sdp;
 554         printf("\tTable Revision=%d\n", srat->TableRevision);
 555         acpi_walk_subtables(sdp, (srat + 1), acpi_print_srat);
 556         printf(END_COMMENT);
 557 }
 558
 559 static void
 560 acpi_print_sdt(ACPI_TABLE_HEADER *sdp)
 561 {
 562         printf("  ");
 563         acpi_print_string(sdp->Signature, ACPI_NAME_SIZE);
 564         printf(": Length=%d, Revision=%d, Checksum=%d,\n",
 565                sdp->Length, sdp->Revision, sdp->Checksum);
 566         printf("\tOEMID=");
 567         acpi_print_string(sdp->OemId, ACPI_OEM_ID_SIZE);
 568         printf(", OEM Table ID=");
 569         acpi_print_string(sdp->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
 570         printf(", OEM Revision=0x%x,\n", sdp->OemRevision);
 571         printf("\tCreator ID=");
 572         acpi_print_string(sdp->AslCompilerId, ACPI_NAME_SIZE);
 573         printf(", Creator Revision=0x%x\n", sdp->AslCompilerRevision);
 574 }
 575
 576 static void
 577 acpi_print_rsdt(ACPI_TABLE_HEADER *rsdp)
 578 {
 579         ACPI_TABLE_RSDT *rsdt;
 580         ACPI_TABLE_XSDT *xsdt;
 581         int     i, entries;
 582         u_long  addr;
 583
 584         rsdt = (ACPI_TABLE_RSDT *)rsdp;
 585         xsdt = (ACPI_TABLE_XSDT *)rsdp;
 586         printf(BEGIN_COMMENT);
 587         acpi_print_sdt(rsdp);
 588         entries = (rsdp->Length - sizeof(ACPI_TABLE_HEADER)) / addr_size;
 589         printf("\tEntries={ ");
 590         for (i = 0; i < entries; i++) {
 591                 if (i > 0)
 592                         printf(", ");
 593                 switch (addr_size) {
 594                 case 4:
 595                         addr = le32toh(rsdt->TableOffsetEntry[i]);
 596                         break;
 597                 case 8:
 598                         addr = le64toh(xsdt->TableOffsetEntry[i]);
 599                         break;
 600                 default:
 601                         addr = 0;
 602                 }
 603                 assert(addr != 0);
 604                 printf("0x%08lx", addr);
 605         }
 606         printf(" }\n");
 607         printf(END_COMMENT);
 608 }
 609
 610 static const char *acpi_pm_profiles[] = {
 611         "Unspecified", "Desktop", "Mobile", "Workstation",
 612         "Enterprise Server", "SOHO Server", "Appliance PC"
 613 };
 614
 615 static void
 616 acpi_print_fadt(ACPI_TABLE_HEADER *sdp)
 617 {
 618         ACPI_TABLE_FADT *fadt;
 619         const char *pm;
 620         char        sep;
 621
 622         fadt = (ACPI_TABLE_FADT *)sdp;
 623         printf(BEGIN_COMMENT);
 624         acpi_print_sdt(sdp);
 625         printf(" \tFACS=0x%x, DSDT=0x%x\n", fadt->Facs,
 626                fadt->Dsdt);
 627         printf("\tINT_MODEL=%s\n", fadt->Model ? "APIC" : "PIC");
 628         if (fadt->PreferredProfile >= sizeof(acpi_pm_profiles) / sizeof(char *))
 629                 pm = "Reserved";
 630         else
 631                 pm = acpi_pm_profiles[fadt->PreferredProfile];
 632         printf("\tPreferred_PM_Profile=%s (%d)\n", pm, fadt->PreferredProfile);
 633         printf("\tSCI_INT=%d\n", fadt->SciInterrupt);
 634         printf("\tSMI_CMD=0x%x, ", fadt->SmiCommand);
 635         printf("ACPI_ENABLE=0x%x, ", fadt->AcpiEnable);
 636         printf("ACPI_DISABLE=0x%x, ", fadt->AcpiDisable);
 637         printf("S4BIOS_REQ=0x%x\n", fadt->S4BiosRequest);
 638         printf("\tPSTATE_CNT=0x%x\n", fadt->PstateControl);
 639         printf("\tPM1a_EVT_BLK=0x%x-0x%x\n",
 640                fadt->Pm1aEventBlock,
 641                fadt->Pm1aEventBlock + fadt->Pm1EventLength - 1);
 642         if (fadt->Pm1bEventBlock != 0)
 643                 printf("\tPM1b_EVT_BLK=0x%x-0x%x\n",
 644                        fadt->Pm1bEventBlock,
 645                        fadt->Pm1bEventBlock + fadt->Pm1EventLength - 1);
 646         printf("\tPM1a_CNT_BLK=0x%x-0x%x\n",
 647                fadt->Pm1aControlBlock,
 648                fadt->Pm1aControlBlock + fadt->Pm1ControlLength - 1);
 649         if (fadt->Pm1bControlBlock != 0)
 650                 printf("\tPM1b_CNT_BLK=0x%x-0x%x\n",
 651                        fadt->Pm1bControlBlock,
 652                        fadt->Pm1bControlBlock + fadt->Pm1ControlLength - 1);
 653         if (fadt->Pm2ControlBlock != 0)
 654                 printf("\tPM2_CNT_BLK=0x%x-0x%x\n",
 655                        fadt->Pm2ControlBlock,
 656                        fadt->Pm2ControlBlock + fadt->Pm2ControlLength - 1);
 657         printf("\tPM_TMR_BLK=0x%x-0x%x\n",
 658                fadt->PmTimerBlock,
 659                fadt->PmTimerBlock + fadt->PmTimerLength - 1);
 660         if (fadt->Gpe0Block != 0)
 661                 printf("\tGPE0_BLK=0x%x-0x%x\n",
 662                        fadt->Gpe0Block,
 663                        fadt->Gpe0Block + fadt->Gpe0BlockLength - 1);
 664         if (fadt->Gpe1Block != 0)
 665                 printf("\tGPE1_BLK=0x%x-0x%x, GPE1_BASE=%d\n",
 666                        fadt->Gpe1Block,
 667                        fadt->Gpe1Block + fadt->Gpe1BlockLength - 1,
 668                        fadt->Gpe1Base);
 669         if (fadt->CstControl != 0)
 670                 printf("\tCST_CNT=0x%x\n", fadt->CstControl);
 671         printf("\tP_LVL2_LAT=%d us, P_LVL3_LAT=%d us\n",
 672                fadt->C2Latency, fadt->C3Latency);
 673         printf("\tFLUSH_SIZE=%d, FLUSH_STRIDE=%d\n",
 674                fadt->FlushSize, fadt->FlushStride);
 675         printf("\tDUTY_OFFSET=%d, DUTY_WIDTH=%d\n",
 676                fadt->DutyOffset, fadt->DutyWidth);
 677         printf("\tDAY_ALRM=%d, MON_ALRM=%d, CENTURY=%d\n",
 678                fadt->DayAlarm, fadt->MonthAlarm, fadt->Century);
 679
 680 #define PRINTFLAG(var, flag) do {                       \
 681         if ((var) & ACPI_FADT_## flag) {                \
 682                 printf("%c%s", sep, #flag); sep = ',';  \
 683         }                                               \
 684 } while (0)
 685
 686         printf("\tIAPC_BOOT_ARCH=");
 687         sep = '{';
 688         PRINTFLAG(fadt->BootFlags, LEGACY_DEVICES);
 689         PRINTFLAG(fadt->BootFlags, 8042);
 690         PRINTFLAG(fadt->BootFlags, NO_VGA);
 691         PRINTFLAG(fadt->BootFlags, NO_MSI);
 692         PRINTFLAG(fadt->BootFlags, NO_ASPM);
 693         if (fadt->BootFlags != 0)
 694                 printf("}");
 695         printf("\n");
 696
 697         printf("\tFlags=");
 698         sep = '{';
 699         PRINTFLAG(fadt->Flags, WBINVD);
 700         PRINTFLAG(fadt->Flags, WBINVD_FLUSH);
 701         PRINTFLAG(fadt->Flags, C1_SUPPORTED);
 702         PRINTFLAG(fadt->Flags, C2_MP_SUPPORTED);
 703         PRINTFLAG(fadt->Flags, POWER_BUTTON);
 704         PRINTFLAG(fadt->Flags, SLEEP_BUTTON);
 705         PRINTFLAG(fadt->Flags, FIXED_RTC);
 706         PRINTFLAG(fadt->Flags, S4_RTC_WAKE);
 707         PRINTFLAG(fadt->Flags, 32BIT_TIMER);
 708         PRINTFLAG(fadt->Flags, DOCKING_SUPPORTED);
 709         PRINTFLAG(fadt->Flags, RESET_REGISTER);
 710         PRINTFLAG(fadt->Flags, SEALED_CASE);
 711         PRINTFLAG(fadt->Flags, HEADLESS);
 712         PRINTFLAG(fadt->Flags, SLEEP_TYPE);
 713         PRINTFLAG(fadt->Flags, PCI_EXPRESS_WAKE);
 714         PRINTFLAG(fadt->Flags, PLATFORM_CLOCK);
 715         PRINTFLAG(fadt->Flags, S4_RTC_VALID);
 716         PRINTFLAG(fadt->Flags, REMOTE_POWER_ON);
 717         PRINTFLAG(fadt->Flags, APIC_CLUSTER);
 718         PRINTFLAG(fadt->Flags, APIC_PHYSICAL);
 719         if (fadt->Flags != 0)
 720                 printf("}\n");
 721
 722 #undef PRINTFLAG
 723
 724         if (fadt->Flags & ACPI_FADT_RESET_REGISTER) {
 725                 printf("\tRESET_REG=");
 726                 acpi_print_gas(&fadt->ResetRegister);
 727                 printf(", RESET_VALUE=%#x\n", fadt->ResetValue);
 728         }
 729         if (acpi_get_fadt_revision(fadt) > 1) {
 730                 printf("\tX_FACS=0x%08lx, ", (u_long)fadt->XFacs);
 731                 printf("X_DSDT=0x%08lx\n", (u_long)fadt->XDsdt);
 732                 printf("\tX_PM1a_EVT_BLK=");
 733                 acpi_print_gas(&fadt->XPm1aEventBlock);
 734                 if (fadt->XPm1bEventBlock.Address != 0) {
 735                         printf("\n\tX_PM1b_EVT_BLK=");
 736                         acpi_print_gas(&fadt->XPm1bEventBlock);
 737                 }
 738                 printf("\n\tX_PM1a_CNT_BLK=");
 739                 acpi_print_gas(&fadt->XPm1aControlBlock);
 740                 if (fadt->XPm1bControlBlock.Address != 0) {
 741                         printf("\n\tX_PM1b_CNT_BLK=");
 742                         acpi_print_gas(&fadt->XPm1bControlBlock);
 743                 }
 744                 if (fadt->XPm2ControlBlock.Address != 0) {
 745                         printf("\n\tX_PM2_CNT_BLK=");
 746                         acpi_print_gas(&fadt->XPm2ControlBlock);
 747                 }
 748                 printf("\n\tX_PM_TMR_BLK=");
 749                 acpi_print_gas(&fadt->XPmTimerBlock);
 750                 if (fadt->XGpe0Block.Address != 0) {
 751                         printf("\n\tX_GPE0_BLK=");
 752                         acpi_print_gas(&fadt->XGpe0Block);
 753                 }
 754                 if (fadt->XGpe1Block.Address != 0) {
 755                         printf("\n\tX_GPE1_BLK=");
 756                         acpi_print_gas(&fadt->XGpe1Block);
 757                 }
 758                 printf("\n");
 759         }
 760
 761         printf(END_COMMENT);
 762 }
 763
 764 static void
 765 acpi_print_facs(ACPI_TABLE_FACS *facs)
 766 {
 767         printf(BEGIN_COMMENT);
 768         printf("  FACS:\tLength=%u, ", facs->Length);
 769         printf("HwSig=0x%08x, ", facs->HardwareSignature);
 770         printf("Firm_Wake_Vec=0x%08x\n", facs->FirmwareWakingVector);
 771
 772         printf("\tGlobal_Lock=");
 773         if (facs->GlobalLock != 0) {
 774                 if (facs->GlobalLock & ACPI_GLOCK_PENDING)
 775                         printf("PENDING,");
 776                 if (facs->GlobalLock & ACPI_GLOCK_OWNED)
 777                         printf("OWNED");
 778         }
 779         printf("\n");
 780
 781         printf("\tFlags=");
 782         if (facs->Flags & ACPI_FACS_S4_BIOS_PRESENT)
 783                 printf("S4BIOS");
 784         printf("\n");
 785
 786         if (facs->XFirmwareWakingVector != 0) {
 787                 printf("\tX_Firm_Wake_Vec=%08lx\n",
 788                        (u_long)facs->XFirmwareWakingVector);
 789         }
 790         printf("\tVersion=%u\n", facs->Version);
 791
 792         printf(END_COMMENT);
 793 }
 794
 795 static void
 796 acpi_print_dsdt(ACPI_TABLE_HEADER *dsdp)
 797 {
 798         printf(BEGIN_COMMENT);
 799         acpi_print_sdt(dsdp);
 800         printf(END_COMMENT);
 801 }
 802
 803 int
 804 acpi_checksum(void *p, size_t length)
 805 {
 806         uint8_t *bp;
 807         uint8_t sum;
 808
 809         bp = p;
 810         sum = 0;
 811         while (length--)
 812                 sum += *bp++;
 813
 814         return (sum);
 815 }
 816
 817 static ACPI_TABLE_HEADER *
 818 acpi_map_sdt(vm_offset_t pa)
 819 {
 820         ACPI_TABLE_HEADER *sp;
 821
 822         sp = acpi_map_physical(pa, sizeof(ACPI_TABLE_HEADER));
 823         sp = acpi_map_physical(pa, sp->Length);
 824         return (sp);
 825 }
 826
 827 static void
 828 acpi_print_rsd_ptr(ACPI_TABLE_RSDP *rp)
 829 {
 830         printf(BEGIN_COMMENT);
 831         printf("  RSD PTR: OEM=");
 832         acpi_print_string(rp->OemId, ACPI_OEM_ID_SIZE);
 833         printf(", ACPI_Rev=%s (%d)\n", rp->Revision < 2 ? "1.0x" : "2.0x",
 834                rp->Revision);
 835         if (rp->Revision < 2) {
 836                 printf("\tRSDT=0x%08x, cksum=%u\n", rp->RsdtPhysicalAddress,
 837                     rp->Checksum);
 838         } else {
 839                 printf("\tXSDT=0x%08lx, length=%u, cksum=%u\n",
 840                     (u_long)rp->XsdtPhysicalAddress, rp->Length,
 841                     rp->ExtendedChecksum);
 842         }
 843         printf(END_COMMENT);
 844 }
 845
 846 static void
 847 acpi_handle_rsdt(ACPI_TABLE_HEADER *rsdp)
 848 {
 849         ACPI_TABLE_HEADER *sdp;
 850         ACPI_TABLE_RSDT *rsdt;
 851         ACPI_TABLE_XSDT *xsdt;
 852         vm_offset_t addr;
 853         int entries, i;
 854
 855         acpi_print_rsdt(rsdp);
 856         rsdt = (ACPI_TABLE_RSDT *)rsdp;
 857         xsdt = (ACPI_TABLE_XSDT *)rsdp;
 858         entries = (rsdp->Length - sizeof(ACPI_TABLE_HEADER)) / addr_size;
 859         for (i = 0; i < entries; i++) {
 860                 switch (addr_size) {
 861                 case 4:
 862                         addr = le32toh(rsdt->TableOffsetEntry[i]);
 863                         break;
 864                 case 8:
 865                         addr = le64toh(xsdt->TableOffsetEntry[i]);
 866                         break;
 867                 default:
 868                         assert((addr = 0));
 869                 }
 870
 871                 sdp = (ACPI_TABLE_HEADER *)acpi_map_sdt(addr);
 872                 if (acpi_checksum(sdp, sdp->Length)) {
 873                         warnx("RSDT entry %d (sig %.4s) is corrupt", i,
 874                             sdp->Signature);
 875                         continue;
 876                 }
 877                 if (!memcmp(sdp->Signature, ACPI_SIG_FADT, 4))
 878                         acpi_handle_fadt(sdp);
 879                 else if (!memcmp(sdp->Signature, ACPI_SIG_MADT, 4))
 880                         acpi_handle_madt(sdp);
 881                 else if (!memcmp(sdp->Signature, ACPI_SIG_HPET, 4))
 882                         acpi_handle_hpet(sdp);
 883                 else if (!memcmp(sdp->Signature, ACPI_SIG_ECDT, 4))
 884                         acpi_handle_ecdt(sdp);
 885                 else if (!memcmp(sdp->Signature, ACPI_SIG_MCFG, 4))
 886                         acpi_handle_mcfg(sdp);
 887                 else if (!memcmp(sdp->Signature, ACPI_SIG_SRAT, 4))
 888                         acpi_handle_srat(sdp);
 889                 else {
 890                         printf(BEGIN_COMMENT);
 891                         acpi_print_sdt(sdp);
 892                         printf(END_COMMENT);
 893                 }
 894         }
 895 }
 896
 897 ACPI_TABLE_HEADER *
 898 sdt_load_devmem(void)
 899 {
 900         ACPI_TABLE_RSDP *rp;
 901         ACPI_TABLE_HEADER *rsdp;
 902
 903         rp = acpi_find_rsd_ptr();
 904         if (!rp)
 905                 errx(1, "Can't find ACPI information");
 906
 907         if (tflag)
 908                 acpi_print_rsd_ptr(rp);
 909         if (rp->Revision < 2) {
 910                 rsdp = (ACPI_TABLE_HEADER *)acpi_map_sdt(rp->RsdtPhysicalAddress);
 911                 if (memcmp(rsdp->Signature, "RSDT", 4) != 0 ||
 912                     acpi_checksum(rsdp, rsdp->Length) != 0)
 913                         errx(1, "RSDT is corrupted");
 914                 addr_size = sizeof(uint32_t);
 915         } else {
 916                 rsdp = (ACPI_TABLE_HEADER *)acpi_map_sdt(rp->XsdtPhysicalAddress);
 917                 if (memcmp(rsdp->Signature, "XSDT", 4) != 0 ||
 918                     acpi_checksum(rsdp, rsdp->Length) != 0)
 919                         errx(1, "XSDT is corrupted");
 920                 addr_size = sizeof(uint64_t);
 921         }
 922         return (rsdp);
 923 }
 924
 925 /* Write the DSDT to a file, concatenating any SSDTs (if present). */
 926 static int
 927 write_dsdt(int fd, ACPI_TABLE_HEADER *rsdt, ACPI_TABLE_HEADER *dsdt)
 928 {
 929         ACPI_TABLE_HEADER sdt;
 930         ACPI_TABLE_HEADER *ssdt;
 931         uint8_t sum;
 932
 933         /* Create a new checksum to account for the DSDT and any SSDTs. */
 934         sdt = *dsdt;
 935         if (rsdt != NULL) {
 936                 sdt.Checksum = 0;
 937                 sum = acpi_checksum(dsdt + 1, dsdt->Length -
 938                     sizeof(ACPI_TABLE_HEADER));
 939                 ssdt = sdt_from_rsdt(rsdt, ACPI_SIG_SSDT, NULL);
 940                 while (ssdt != NULL) {
 941                         sdt.Length += ssdt->Length - sizeof(ACPI_TABLE_HEADER);
 942                         sum += acpi_checksum(ssdt + 1,
 943                             ssdt->Length - sizeof(ACPI_TABLE_HEADER));
 944                         ssdt = sdt_from_rsdt(rsdt, ACPI_SIG_SSDT, ssdt);
 945                 }
 946                 sum += acpi_checksum(&sdt, sizeof(ACPI_TABLE_HEADER));
 947                 sdt.Checksum -= sum;
 948         }
 949
 950         /* Write out the DSDT header and body. */
 951         write(fd, &sdt, sizeof(ACPI_TABLE_HEADER));
 952         write(fd, dsdt + 1, dsdt->Length - sizeof(ACPI_TABLE_HEADER));
 953
 954         /* Write out any SSDTs (if present.) */
 955         if (rsdt != NULL) {
 956                 ssdt = sdt_from_rsdt(rsdt, "SSDT", NULL);
 957                 while (ssdt != NULL) {
 958                         write(fd, ssdt + 1, ssdt->Length -
 959                             sizeof(ACPI_TABLE_HEADER));
 960                         ssdt = sdt_from_rsdt(rsdt, "SSDT", ssdt);
 961                 }
 962         }
 963         return (0);
 964 }
 965
 966 void
 967 dsdt_save_file(char *outfile, ACPI_TABLE_HEADER *rsdt, ACPI_TABLE_HEADER *dsdp)
 968 {
 969         int     fd;
 970         mode_t  mode;
 971
 972         assert(outfile != NULL);
 973         mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
 974         fd = open(outfile, O_WRONLY | O_CREAT | O_TRUNC, mode);
 975         if (fd == -1) {
 976                 perror("dsdt_save_file");
 977                 return;
 978         }
 979         write_dsdt(fd, rsdt, dsdp);
 980         close(fd);
 981 }
 982
 983 void
 984 aml_disassemble(ACPI_TABLE_HEADER *rsdt, ACPI_TABLE_HEADER *dsdp)
 985 {
 986         char buf[PATH_MAX], tmpstr[PATH_MAX];
 987         const char *tmpdir;
 988         char *tmpext;
 989         FILE *fp;
 990         size_t len;
 991         int fd;
 992
 993         tmpdir = getenv("TMPDIR");
 994         if (tmpdir == NULL)
 995                 tmpdir = _PATH_TMP;
 996         strncpy(tmpstr, tmpdir, sizeof(tmpstr));
 997         strncat(tmpstr, "/acpidump.", sizeof(tmpstr) - strlen(tmpdir));
 998         if (realpath(tmpstr, buf) == NULL) {
 999                 perror("realpath tmp file");
1000                 return;
1001         }
1002         strncpy(tmpstr, buf, sizeof(tmpstr));
1003         len = strlen(buf);
1004         tmpext = tmpstr + len;
1005         strncpy(tmpext, "XXXXXX", sizeof(tmpstr) - len);
1006         fd = mkstemp(tmpstr);
1007         if (fd < 0) {
1008                 perror("iasl tmp file");
1009                 return;
1010         }
1011         write_dsdt(fd, rsdt, dsdp);
1012         close(fd);
1013
1014         /* Run iasl -d on the temp file */
1015         if (fork() == 0) {
1016                 close(STDOUT_FILENO);
1017                 if (vflag == 0)
1018                         close(STDERR_FILENO);
1019                 execl("/usr/sbin/iasl", "iasl", "-d", tmpstr, NULL);
1020                 err(1, "exec");
1021         }
1022
1023         wait(NULL);
1024         unlink(tmpstr);
1025
1026         /* Dump iasl's output to stdout */
1027         strncpy(tmpext, "dsl", sizeof(tmpstr) - len);
1028         fp = fopen(tmpstr, "r");
1029         unlink(tmpstr);
1030         if (fp == NULL) {
1031                 perror("iasl tmp file (read)");
1032                 return;
1033         }
1034         while ((len = fread(buf, 1, sizeof(buf), fp)) > 0)
1035                 fwrite(buf, 1, len, stdout);
1036         fclose(fp);
1037 }
1038
1039 void
1040 sdt_print_all(ACPI_TABLE_HEADER *rsdp)
1041 {
1042         acpi_handle_rsdt(rsdp);
1043 }
1044
1045 /* Fetch a table matching the given signature via the RSDT. */
1046 ACPI_TABLE_HEADER *
1047 sdt_from_rsdt(ACPI_TABLE_HEADER *rsdp, const char *sig, ACPI_TABLE_HEADER *last)
1048 {
1049         ACPI_TABLE_HEADER *sdt;
1050         ACPI_TABLE_RSDT *rsdt;
1051         ACPI_TABLE_XSDT *xsdt;
1052         vm_offset_t addr;
1053         int entries, i;
1054
1055         rsdt = (ACPI_TABLE_RSDT *)rsdp;
1056         xsdt = (ACPI_TABLE_XSDT *)rsdp;
1057         entries = (rsdp->Length - sizeof(ACPI_TABLE_HEADER)) / addr_size;
1058         for (i = 0; i < entries; i++) {
1059                 switch (addr_size) {
1060                 case 4:
1061                         addr = le32toh(rsdt->TableOffsetEntry[i]);
1062                         break;
1063                 case 8:
1064                         addr = le64toh(xsdt->TableOffsetEntry[i]);
1065                         break;
1066                 default:
1067                         assert((addr = 0));
1068                 }
1069                 sdt = (ACPI_TABLE_HEADER *)acpi_map_sdt(addr);
1070                 if (last != NULL) {
1071                         if (sdt == last)
1072                                 last = NULL;
1073                         continue;
1074                 }
1075                 if (memcmp(sdt->Signature, sig, strlen(sig)))
1076                         continue;
1077                 if (acpi_checksum(sdt, sdt->Length))
1078                         errx(1, "RSDT entry %d is corrupt", i);
1079                 return (sdt);
1080         }
1081
1082         return (NULL);
1083 }
1084
1085 ACPI_TABLE_HEADER *
1086 dsdt_from_fadt(ACPI_TABLE_FADT *fadt)
1087 {
1088         ACPI_TABLE_HEADER       *sdt;
1089
1090         /* Use the DSDT address if it is version 1, otherwise use XDSDT. */
1091         if (acpi_get_fadt_revision(fadt) == 1)
1092                 sdt = (ACPI_TABLE_HEADER *)acpi_map_sdt(fadt->Dsdt);
1093         else
1094                 sdt = (ACPI_TABLE_HEADER *)acpi_map_sdt(fadt->XDsdt);
1095         if (acpi_checksum(sdt, sdt->Length))
1096                 errx(1, "DSDT is corrupt\n");
1097         return (sdt);
1098 }