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 <stdio.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40
  41 #include "acpidump.h"
  42
  43 #define BEGIN_COMMENT   "/*\n"
  44 #define END_COMMENT     " */\n"
  45
  46 static void     acpi_print_string(char *s, size_t length);
  47 static void     acpi_print_gas(struct ACPIgas *gas);
  48 static int      acpi_get_fadt_revision(struct FADTbody *fadt);
  49 static void     acpi_handle_fadt(struct ACPIsdt *fadt);
  50 static void     acpi_print_cpu(u_char cpu_id);
  51 static void     acpi_print_local_apic(u_char cpu_id, u_char apic_id,
  52                                       u_int32_t flags);
  53 static void     acpi_print_io_apic(u_char apic_id, u_int32_t int_base,
  54                                    u_int64_t apic_addr);
  55 static void     acpi_print_mps_flags(u_int16_t flags);
  56 static void     acpi_print_intr(u_int32_t intr, u_int16_t mps_flags);
  57 static void     acpi_print_apic(struct MADT_APIC *mp);
  58 static void     acpi_handle_apic(struct ACPIsdt *sdp);
  59 static void     acpi_handle_hpet(struct ACPIsdt *sdp);
  60 static void     acpi_print_sdt(struct ACPIsdt *sdp);
  61 static void     acpi_print_fadt(struct ACPIsdt *sdp);
  62 static void     acpi_print_facs(struct FACSbody *facs);
  63 static void     acpi_print_dsdt(struct ACPIsdt *dsdp);
  64 static struct ACPIsdt *acpi_map_sdt(vm_offset_t pa);
  65 static void     acpi_print_rsd_ptr(struct ACPIrsdp *rp);
  66 static void     acpi_handle_rsdt(struct ACPIsdt *rsdp);
  67
  68 /* Size of an address. 32-bit for ACPI 1.0, 64-bit for ACPI 2.0 and up. */
  69 static int addr_size;
  70
  71 static void
  72 acpi_print_string(char *s, size_t length)
  73 {
  74         int     c;
  75
  76         /* Trim trailing spaces and NULLs */
  77         while (length > 0 && (s[length - 1] == ' ' || s[length - 1] == '\0'))
  78                 length--;
  79
  80         while (length--) {
  81                 c = *s++;
  82                 putchar(c);
  83         }
  84 }
  85
  86 static void
  87 acpi_print_gas(struct ACPIgas *gas)
  88 {
  89         switch(gas->address_space_id) {
  90         case ACPI_GAS_MEMORY:
  91                 printf("0x%08lx:%u[%u] (Memory)", (u_long)gas->address,
  92                        gas->bit_offset, gas->bit_width);
  93                 break;
  94         case ACPI_GAS_IO:
  95                 printf("0x%02lx:%u[%u] (IO)", (u_long)gas->address,
  96                        gas->bit_offset, gas->bit_width);
  97                 break;
  98         case ACPI_GAS_PCI:
  99                 printf("%x:%x+0x%x (PCI)", (uint16_t)(gas->address >> 32),
 100                        (uint16_t)((gas->address >> 16) & 0xffff),
 101                        (uint16_t)gas->address);
 102                 break;
 103         /* XXX How to handle these below? */
 104         case ACPI_GAS_EMBEDDED:
 105                 printf("0x%x:%u[%u] (EC)", (uint16_t)gas->address,
 106                        gas->bit_offset, gas->bit_width);
 107                 break;
 108         case ACPI_GAS_SMBUS:
 109                 printf("0x%x:%u[%u] (SMBus)", (uint16_t)gas->address,
 110                        gas->bit_offset, gas->bit_width);
 111                 break;
 112         case ACPI_GAS_FIXED:
 113         default:
 114                 printf("0x%08lx (?)", (u_long)gas->address);
 115                 break;
 116         }
 117 }
 118
 119 /* The FADT revision indicates whether we use the DSDT or X_DSDT addresses. */
 120 static int
 121 acpi_get_fadt_revision(struct FADTbody *fadt)
 122 {
 123         int fadt_revision;
 124
 125         /* Set the FADT revision separately from the RSDP version. */
 126         if (addr_size == 8) {
 127                 fadt_revision = 2;
 128
 129                 /*
 130                  * A few systems (e.g., IBM T23) have an RSDP that claims
 131                  * revision 2 but the 64 bit addresses are invalid.  If
 132                  * revision 2 and the 32 bit address is non-zero but the
 133                  * 32 and 64 bit versions don't match, prefer the 32 bit
 134                  * version for all subsequent tables.
 135                  */
 136                 if (fadt->facs_ptr != 0 &&
 137                     (fadt->x_facs_ptr & 0xffffffff) != fadt->facs_ptr)
 138                         fadt_revision = 1;
 139         } else
 140                 fadt_revision = 1;
 141         return (fadt_revision);
 142 }
 143
 144 static void
 145 acpi_handle_fadt(struct ACPIsdt *sdp)
 146 {
 147         struct ACPIsdt  *dsdp;
 148         struct FACSbody *facs;
 149         struct FADTbody *fadt;
 150         int             fadt_revision;
 151
 152         fadt = (struct FADTbody *)sdp->body;
 153         acpi_print_fadt(sdp);
 154
 155         fadt_revision = acpi_get_fadt_revision(fadt);
 156         if (fadt_revision == 1)
 157                 facs = (struct FACSbody *)acpi_map_sdt(fadt->facs_ptr);
 158         else
 159                 facs = (struct FACSbody *)acpi_map_sdt(fadt->x_facs_ptr);
 160         if (memcmp(facs->signature, "FACS", 4) != 0 || facs->len < 64)
 161                 errx(1, "FACS is corrupt");
 162         acpi_print_facs(facs);
 163
 164         if (fadt_revision == 1)
 165                 dsdp = (struct ACPIsdt *)acpi_map_sdt(fadt->dsdt_ptr);
 166         else
 167                 dsdp = (struct ACPIsdt *)acpi_map_sdt(fadt->x_dsdt_ptr);
 168         if (acpi_checksum(dsdp, dsdp->len))
 169                 errx(1, "DSDT is corrupt");
 170         acpi_print_dsdt(dsdp);
 171 }
 172
 173 static void
 174 acpi_print_cpu(u_char cpu_id)
 175 {
 176
 177         printf("\tACPI CPU=");
 178         if (cpu_id == 0xff)
 179                 printf("ALL\n");
 180         else
 181                 printf("%d\n", (u_int)cpu_id);
 182 }
 183
 184 static void
 185 acpi_print_local_apic(u_char cpu_id, u_char apic_id, u_int32_t flags)
 186 {
 187         acpi_print_cpu(cpu_id);
 188         printf("\tFlags={");
 189         if (flags & ACPI_MADT_APIC_LOCAL_FLAG_ENABLED)
 190                 printf("ENABLED");
 191         else
 192                 printf("DISABLED");
 193         printf("}\n");
 194         printf("\tAPIC ID=%d\n", (u_int)apic_id);
 195 }
 196
 197 static void
 198 acpi_print_io_apic(u_char apic_id, u_int32_t int_base, u_int64_t apic_addr)
 199 {
 200         printf("\tAPIC ID=%d\n", (u_int)apic_id);
 201         printf("\tINT BASE=%d\n", int_base);
 202         printf("\tADDR=0x%016jx\n", apic_addr);
 203 }
 204
 205 static void
 206 acpi_print_mps_flags(u_int16_t flags)
 207 {
 208
 209         printf("\tFlags={Polarity=");
 210         switch (flags & MPS_INT_FLAG_POLARITY_MASK) {
 211         case MPS_INT_FLAG_POLARITY_CONFORM:
 212                 printf("conforming");
 213                 break;
 214         case MPS_INT_FLAG_POLARITY_HIGH:
 215                 printf("active-hi");
 216                 break;
 217         case MPS_INT_FLAG_POLARITY_LOW:
 218                 printf("active-lo");
 219                 break;
 220         default:
 221                 printf("0x%x", flags & MPS_INT_FLAG_POLARITY_MASK);
 222                 break;
 223         }
 224         printf(", Trigger=");
 225         switch (flags & MPS_INT_FLAG_TRIGGER_MASK) {
 226         case MPS_INT_FLAG_TRIGGER_CONFORM:
 227                 printf("conforming");
 228                 break;
 229         case MPS_INT_FLAG_TRIGGER_EDGE:
 230                 printf("edge");
 231                 break;
 232         case MPS_INT_FLAG_TRIGGER_LEVEL:
 233                 printf("level");
 234                 break;
 235         default:
 236                 printf("0x%x", (flags & MPS_INT_FLAG_TRIGGER_MASK) >> 2);
 237         }
 238         printf("}\n");
 239 }
 240
 241 static void
 242 acpi_print_intr(u_int32_t intr, u_int16_t mps_flags)
 243 {
 244
 245         printf("\tINTR=%d\n", (u_int)intr);
 246         acpi_print_mps_flags(mps_flags);
 247 }
 248
 249 const char *apic_types[] = { "Local APIC", "IO APIC", "INT Override", "NMI",
 250                              "Local NMI", "Local APIC Override", "IO SAPIC",
 251                              "Local SAPIC", "Platform Interrupt" };
 252 const char *platform_int_types[] = { "PMI", "INIT",
 253                                      "Corrected Platform Error" };
 254
 255 static void
 256 acpi_print_apic(struct MADT_APIC *mp)
 257 {
 258
 259         printf("\tType=%s\n", apic_types[mp->type]);
 260         switch (mp->type) {
 261         case ACPI_MADT_APIC_TYPE_LOCAL_APIC:
 262                 acpi_print_local_apic(mp->body.local_apic.cpu_id,
 263                     mp->body.local_apic.apic_id, mp->body.local_apic.flags);
 264                 break;
 265         case ACPI_MADT_APIC_TYPE_IO_APIC:
 266                 acpi_print_io_apic(mp->body.io_apic.apic_id,
 267                     mp->body.io_apic.int_base,
 268                     mp->body.io_apic.apic_addr);
 269                 break;
 270         case ACPI_MADT_APIC_TYPE_INT_OVERRIDE:
 271                 printf("\tBUS=%d\n", (u_int)mp->body.int_override.bus);
 272                 printf("\tIRQ=%d\n", (u_int)mp->body.int_override.source);
 273                 acpi_print_intr(mp->body.int_override.intr,
 274                     mp->body.int_override.mps_flags);
 275                 break;
 276         case ACPI_MADT_APIC_TYPE_NMI:
 277                 acpi_print_intr(mp->body.nmi.intr, mp->body.nmi.mps_flags);
 278                 break;
 279         case ACPI_MADT_APIC_TYPE_LOCAL_NMI:
 280                 acpi_print_cpu(mp->body.local_nmi.cpu_id);
 281                 printf("\tLINT Pin=%d\n", mp->body.local_nmi.lintpin);
 282                 acpi_print_mps_flags(mp->body.local_nmi.mps_flags);
 283                 break;
 284         case ACPI_MADT_APIC_TYPE_LOCAL_OVERRIDE:
 285                 printf("\tLocal APIC ADDR=0x%016jx\n",
 286                     mp->body.local_apic_override.apic_addr);
 287                 break;
 288         case ACPI_MADT_APIC_TYPE_IO_SAPIC:
 289                 acpi_print_io_apic(mp->body.io_sapic.apic_id,
 290                     mp->body.io_sapic.int_base,
 291                     mp->body.io_sapic.apic_addr);
 292                 break;
 293         case ACPI_MADT_APIC_TYPE_LOCAL_SAPIC:
 294                 acpi_print_local_apic(mp->body.local_sapic.cpu_id,
 295                     mp->body.local_sapic.apic_id, mp->body.local_sapic.flags);
 296                 printf("\tAPIC EID=%d\n", (u_int)mp->body.local_sapic.apic_eid);
 297                 break;
 298         case ACPI_MADT_APIC_TYPE_INT_SRC:
 299                 printf("\tType=%s\n",
 300                     platform_int_types[mp->body.int_src.type]);
 301                 printf("\tCPU ID=%d\n", (u_int)mp->body.int_src.cpu_id);
 302                 printf("\tCPU EID=%d\n", (u_int)mp->body.int_src.cpu_id);
 303                 printf("\tSAPIC Vector=%d\n",
 304                     (u_int)mp->body.int_src.sapic_vector);
 305                 acpi_print_intr(mp->body.int_src.intr,
 306                     mp->body.int_src.mps_flags);
 307                 break;
 308         default:
 309                 printf("\tUnknown type %d\n", (u_int)mp->type);
 310                 break;
 311         }
 312 }
 313
 314 static void
 315 acpi_handle_apic(struct ACPIsdt *sdp)
 316 {
 317         struct MADTbody *madtp;
 318         struct MADT_APIC *madt_apicp;
 319
 320         printf(BEGIN_COMMENT);
 321         acpi_print_sdt(sdp);
 322         madtp = (struct MADTbody *) sdp->body;
 323         printf("\tLocal APIC ADDR=0x%08x\n", madtp->lapic_addr);
 324         printf("\tFlags={");
 325         if (madtp->flags & ACPI_APIC_FLAG_PCAT_COMPAT)
 326                 printf("PC-AT");
 327         printf("}\n");
 328         madt_apicp = (struct MADT_APIC *)madtp->body;
 329         while (((uintptr_t)madt_apicp) - ((uintptr_t)sdp) < sdp->len) {
 330                 printf("\n");
 331                 acpi_print_apic(madt_apicp);
 332                 madt_apicp = (struct MADT_APIC *) ((char *)madt_apicp +
 333                     madt_apicp->len);
 334         }
 335         printf(END_COMMENT);
 336 }
 337
 338 static void
 339 acpi_handle_hpet(struct ACPIsdt *sdp)
 340 {
 341         struct HPETbody *hpetp;
 342
 343         printf(BEGIN_COMMENT);
 344         acpi_print_sdt(sdp);
 345         hpetp = (struct HPETbody *) sdp->body;
 346         printf("\tHPET Number=%d\n", hpetp->hpet_number);
 347         printf("\tADDR=");
 348         acpi_print_gas(&hpetp->genaddr);
 349         printf("\tHW Rev=0x%x\n", hpetp->block_hwrev);
 350         printf("\tComparitors=%d\n", hpetp->block_comparitors);
 351         printf("\tCounter Size=%d\n", hpetp->block_counter_size);
 352         printf("\tLegacy IRQ routing capable={");
 353         if (hpetp->block_legacy_capable)
 354                 printf("TRUE}\n");
 355         else
 356                 printf("FALSE}\n");
 357         printf("\tPCI Vendor ID=0x%04x\n", hpetp->block_pcivendor);
 358         printf("\tMinimal Tick=%d\n", hpetp->clock_tick);
 359         printf(END_COMMENT);
 360 }
 361
 362 static void
 363 acpi_handle_ecdt(struct ACPIsdt *sdp)
 364 {
 365         struct ECDTbody *ecdt;
 366
 367         printf(BEGIN_COMMENT);
 368         acpi_print_sdt(sdp);
 369         ecdt = (struct ECDTbody *) sdp->body;
 370         printf("\tEC_CONTROL=");
 371         acpi_print_gas(&ecdt->ec_control);
 372         printf("\n\tEC_DATA=");
 373         acpi_print_gas(&ecdt->ec_data);
 374         printf("\n\tUID=%#x, ", ecdt->uid);
 375         printf("GPE_BIT=%#x\n", ecdt->gpe_bit);
 376         printf("\tEC_ID=%s\n", ecdt->ec_id);
 377         printf(END_COMMENT);
 378 }
 379
 380 static void
 381 acpi_handle_mcfg(struct ACPIsdt *sdp)
 382 {
 383         struct MCFGbody *mcfg;
 384         u_int i, e;
 385
 386         printf(BEGIN_COMMENT);
 387         acpi_print_sdt(sdp);
 388         mcfg = (struct MCFGbody *) sdp->body;
 389
 390         e = (sdp->len - ((caddr_t)&mcfg->s[0] - (caddr_t)sdp)) /
 391             sizeof(*mcfg->s);
 392         for (i = 0; i < e; i++, mcfg++) {
 393                 printf("\n");
 394                 printf("\tBase Address= 0x%016jx\n", mcfg->s[i].baseaddr);
 395                 printf("\tSegment Group= 0x%04x\n", mcfg->s[i].seg_grp);
 396                 printf("\tStart Bus= %d\n", mcfg->s[i].start);
 397                 printf("\tEnd Bus= %d\n", mcfg->s[i].end);
 398         }
 399         printf(END_COMMENT);
 400 }
 401
 402 static void
 403 acpi_print_sdt(struct ACPIsdt *sdp)
 404 {
 405         printf("  ");
 406         acpi_print_string(sdp->signature, 4);
 407         printf(": Length=%d, Revision=%d, Checksum=%d,\n",
 408                sdp->len, sdp->rev, sdp->check);
 409         printf("\tOEMID=");
 410         acpi_print_string(sdp->oemid, 6);
 411         printf(", OEM Table ID=");
 412         acpi_print_string(sdp->oemtblid, 8);
 413         printf(", OEM Revision=0x%x,\n", sdp->oemrev);
 414         printf("\tCreator ID=");
 415         acpi_print_string(sdp->creator, 4);
 416         printf(", Creator Revision=0x%x\n", sdp->crerev);
 417 }
 418
 419 static void
 420 acpi_print_rsdt(struct ACPIsdt *rsdp)
 421 {
 422         int     i, entries;
 423         u_long  addr;
 424
 425         printf(BEGIN_COMMENT);
 426         acpi_print_sdt(rsdp);
 427         entries = (rsdp->len - SIZEOF_SDT_HDR) / addr_size;
 428         printf("\tEntries={ ");
 429         for (i = 0; i < entries; i++) {
 430                 if (i > 0)
 431                         printf(", ");
 432                 switch (addr_size) {
 433                 case 4:
 434                         addr = le32dec((char*)rsdp->body + i * addr_size);
 435                         break;
 436                 case 8:
 437                         addr = le64dec((char*)rsdp->body + i * addr_size);
 438                         break;
 439                 default:
 440                         addr = 0;
 441                 }
 442                 assert(addr != 0);
 443                 printf("0x%08lx", addr);
 444         }
 445         printf(" }\n");
 446         printf(END_COMMENT);
 447 }
 448
 449 static const char *acpi_pm_profiles[] = {
 450         "Unspecified", "Desktop", "Mobile", "Workstation",
 451         "Enterprise Server", "SOHO Server", "Appliance PC"
 452 };
 453
 454 static void
 455 acpi_print_fadt(struct ACPIsdt *sdp)
 456 {
 457         struct FADTbody *fadt;
 458         const char *pm;
 459         char        sep;
 460
 461         fadt = (struct FADTbody *)sdp->body;
 462         printf(BEGIN_COMMENT);
 463         acpi_print_sdt(sdp);
 464         printf(" \tFACS=0x%x, DSDT=0x%x\n", fadt->facs_ptr,
 465                fadt->dsdt_ptr);
 466         printf("\tINT_MODEL=%s\n", fadt->int_model ? "APIC" : "PIC");
 467         if (fadt->pm_profile >= sizeof(acpi_pm_profiles) / sizeof(char *))
 468                 pm = "Reserved";
 469         else
 470                 pm = acpi_pm_profiles[fadt->pm_profile];
 471         printf("\tPreferred_PM_Profile=%s (%d)\n", pm, fadt->pm_profile);
 472         printf("\tSCI_INT=%d\n", fadt->sci_int);
 473         printf("\tSMI_CMD=0x%x, ", fadt->smi_cmd);
 474         printf("ACPI_ENABLE=0x%x, ", fadt->acpi_enable);
 475         printf("ACPI_DISABLE=0x%x, ", fadt->acpi_disable);
 476         printf("S4BIOS_REQ=0x%x\n", fadt->s4biosreq);
 477         printf("\tPSTATE_CNT=0x%x\n", fadt->pstate_cnt);
 478         printf("\tPM1a_EVT_BLK=0x%x-0x%x\n",
 479                fadt->pm1a_evt_blk,
 480                fadt->pm1a_evt_blk + fadt->pm1_evt_len - 1);
 481         if (fadt->pm1b_evt_blk != 0)
 482                 printf("\tPM1b_EVT_BLK=0x%x-0x%x\n",
 483                        fadt->pm1b_evt_blk,
 484                        fadt->pm1b_evt_blk + fadt->pm1_evt_len - 1);
 485         printf("\tPM1a_CNT_BLK=0x%x-0x%x\n",
 486                fadt->pm1a_cnt_blk,
 487                fadt->pm1a_cnt_blk + fadt->pm1_cnt_len - 1);
 488         if (fadt->pm1b_cnt_blk != 0)
 489                 printf("\tPM1b_CNT_BLK=0x%x-0x%x\n",
 490                        fadt->pm1b_cnt_blk,
 491                        fadt->pm1b_cnt_blk + fadt->pm1_cnt_len - 1);
 492         if (fadt->pm2_cnt_blk != 0)
 493                 printf("\tPM2_CNT_BLK=0x%x-0x%x\n",
 494                        fadt->pm2_cnt_blk,
 495                        fadt->pm2_cnt_blk + fadt->pm2_cnt_len - 1);
 496         printf("\tPM_TMR_BLK=0x%x-0x%x\n",
 497                fadt->pm_tmr_blk,
 498                fadt->pm_tmr_blk + fadt->pm_tmr_len - 1);
 499         if (fadt->gpe0_blk != 0)
 500                 printf("\tGPE0_BLK=0x%x-0x%x\n",
 501                        fadt->gpe0_blk,
 502                        fadt->gpe0_blk + fadt->gpe0_len - 1);
 503         if (fadt->gpe1_blk != 0)
 504                 printf("\tGPE1_BLK=0x%x-0x%x, GPE1_BASE=%d\n",
 505                        fadt->gpe1_blk,
 506                        fadt->gpe1_blk + fadt->gpe1_len - 1,
 507                        fadt->gpe1_base);
 508         if (fadt->cst_cnt != 0)
 509                 printf("\tCST_CNT=0x%x\n", fadt->cst_cnt);
 510         printf("\tP_LVL2_LAT=%d us, P_LVL3_LAT=%d us\n",
 511                fadt->p_lvl2_lat, fadt->p_lvl3_lat);
 512         printf("\tFLUSH_SIZE=%d, FLUSH_STRIDE=%d\n",
 513                fadt->flush_size, fadt->flush_stride);
 514         printf("\tDUTY_OFFSET=%d, DUTY_WIDTH=%d\n",
 515                fadt->duty_off, fadt->duty_width);
 516         printf("\tDAY_ALRM=%d, MON_ALRM=%d, CENTURY=%d\n",
 517                fadt->day_alrm, fadt->mon_alrm, fadt->century);
 518
 519 #define PRINTFLAG(var, flag) do {                       \
 520         if ((var) & FADT_FLAG_## flag) {                \
 521                 printf("%c%s", sep, #flag); sep = ',';  \
 522         }                                               \
 523 } while (0)
 524
 525         printf("\tIAPC_BOOT_ARCH=");
 526         sep = '{';
 527         PRINTFLAG(fadt->iapc_boot_arch, LEGACY_DEV);
 528         PRINTFLAG(fadt->iapc_boot_arch, 8042);
 529         if (fadt->iapc_boot_arch != 0)
 530                 printf("}");
 531         printf("\n");
 532
 533         printf("\tFlags=");
 534         sep = '{';
 535         PRINTFLAG(fadt->flags, WBINVD);
 536         PRINTFLAG(fadt->flags, WBINVD_FLUSH);
 537         PRINTFLAG(fadt->flags, PROC_C1);
 538         PRINTFLAG(fadt->flags, P_LVL2_UP);
 539         PRINTFLAG(fadt->flags, PWR_BUTTON);
 540         PRINTFLAG(fadt->flags, SLP_BUTTON);
 541         PRINTFLAG(fadt->flags, FIX_RTC);
 542         PRINTFLAG(fadt->flags, RTC_S4);
 543         PRINTFLAG(fadt->flags, TMR_VAL_EXT);
 544         PRINTFLAG(fadt->flags, DCK_CAP);
 545         PRINTFLAG(fadt->flags, RESET_REG);
 546         PRINTFLAG(fadt->flags, SEALED_CASE);
 547         PRINTFLAG(fadt->flags, HEADLESS);
 548         PRINTFLAG(fadt->flags, CPU_SW_SLP);
 549         if (fadt->flags != 0)
 550                 printf("}\n");
 551
 552 #undef PRINTFLAG
 553
 554         if (fadt->flags & FADT_FLAG_RESET_REG) {
 555                 printf("\tRESET_REG=");
 556                 acpi_print_gas(&fadt->reset_reg);
 557                 printf(", RESET_VALUE=%#x\n", fadt->reset_value);
 558         }
 559         if (acpi_get_fadt_revision(fadt) > 1) {
 560                 printf("\tX_FACS=0x%08lx, ", (u_long)fadt->x_facs_ptr);
 561                 printf("X_DSDT=0x%08lx\n", (u_long)fadt->x_dsdt_ptr);
 562                 printf("\tX_PM1a_EVT_BLK=");
 563                 acpi_print_gas(&fadt->x_pm1a_evt_blk);
 564                 if (fadt->x_pm1b_evt_blk.address != 0) {
 565                         printf("\n\tX_PM1b_EVT_BLK=");
 566                         acpi_print_gas(&fadt->x_pm1b_evt_blk);
 567                 }
 568                 printf("\n\tX_PM1a_CNT_BLK=");
 569                 acpi_print_gas(&fadt->x_pm1a_cnt_blk);
 570                 if (fadt->x_pm1b_cnt_blk.address != 0) {
 571                         printf("\n\tX_PM1b_CNT_BLK=");
 572                         acpi_print_gas(&fadt->x_pm1b_cnt_blk);
 573                 }
 574                 if (fadt->x_pm1b_cnt_blk.address != 0) {
 575                         printf("\n\tX_PM2_CNT_BLK=");
 576                         acpi_print_gas(&fadt->x_pm2_cnt_blk);
 577                 }
 578                 printf("\n\tX_PM_TMR_BLK=");
 579                 acpi_print_gas(&fadt->x_pm_tmr_blk);
 580                 if (fadt->x_gpe0_blk.address != 0) {
 581                         printf("\n\tX_GPE0_BLK=");
 582                         acpi_print_gas(&fadt->x_gpe0_blk);
 583                 }
 584                 if (fadt->x_gpe1_blk.address != 0) {
 585                         printf("\n\tX_GPE1_BLK=");
 586                         acpi_print_gas(&fadt->x_gpe1_blk);
 587                 }
 588                 printf("\n");
 589         }
 590
 591         printf(END_COMMENT);
 592 }
 593
 594 static void
 595 acpi_print_facs(struct FACSbody *facs)
 596 {
 597         printf(BEGIN_COMMENT);
 598         printf("  FACS:\tLength=%u, ", facs->len);
 599         printf("HwSig=0x%08x, ", facs->hw_sig);
 600         printf("Firm_Wake_Vec=0x%08x\n", facs->firm_wake_vec);
 601
 602         printf("\tGlobal_Lock=");
 603         if (facs->global_lock != 0) {
 604                 if (facs->global_lock & FACS_FLAG_LOCK_PENDING)
 605                         printf("PENDING,");
 606                 if (facs->global_lock & FACS_FLAG_LOCK_OWNED)
 607                         printf("OWNED");
 608         }
 609         printf("\n");
 610
 611         printf("\tFlags=");
 612         if (facs->flags & FACS_FLAG_S4BIOS_F)
 613                 printf("S4BIOS");
 614         printf("\n");
 615
 616         if (facs->x_firm_wake_vec != 0) {
 617                 printf("\tX_Firm_Wake_Vec=%08lx\n",
 618                        (u_long)facs->x_firm_wake_vec);
 619         }
 620         printf("\tVersion=%u\n", facs->version);
 621
 622         printf(END_COMMENT);
 623 }
 624
 625 static void
 626 acpi_print_dsdt(struct ACPIsdt *dsdp)
 627 {
 628         printf(BEGIN_COMMENT);
 629         acpi_print_sdt(dsdp);
 630         printf(END_COMMENT);
 631 }
 632
 633 int
 634 acpi_checksum(void *p, size_t length)
 635 {
 636         u_int8_t        *bp;
 637         u_int8_t        sum;
 638
 639         bp = p;
 640         sum = 0;
 641         while (length--)
 642                 sum += *bp++;
 643
 644         return (sum);
 645 }
 646
 647 static struct ACPIsdt *
 648 acpi_map_sdt(vm_offset_t pa)
 649 {
 650         struct  ACPIsdt *sp;
 651
 652         sp = acpi_map_physical(pa, sizeof(struct ACPIsdt));
 653         sp = acpi_map_physical(pa, sp->len);
 654         return (sp);
 655 }
 656
 657 static void
 658 acpi_print_rsd_ptr(struct ACPIrsdp *rp)
 659 {
 660         printf(BEGIN_COMMENT);
 661         printf("  RSD PTR: OEM=");
 662         acpi_print_string(rp->oem, 6);
 663         printf(", ACPI_Rev=%s (%d)\n", rp->revision < 2 ? "1.0x" : "2.0x",
 664                rp->revision);
 665         if (rp->revision < 2) {
 666                 printf("\tRSDT=0x%08x, cksum=%u\n", rp->rsdt_addr, rp->sum);
 667         } else {
 668                 printf("\tXSDT=0x%08lx, length=%u, cksum=%u\n",
 669                     (u_long)rp->xsdt_addr, rp->length, rp->xsum);
 670         }
 671         printf(END_COMMENT);
 672 }
 673
 674 static void
 675 acpi_handle_rsdt(struct ACPIsdt *rsdp)
 676 {
 677         struct ACPIsdt *sdp;
 678         vm_offset_t addr;
 679         int entries, i;
 680
 681         acpi_print_rsdt(rsdp);
 682         entries = (rsdp->len - SIZEOF_SDT_HDR) / addr_size;
 683         for (i = 0; i < entries; i++) {
 684                 switch (addr_size) {
 685                 case 4:
 686                         addr = le32dec((char*)rsdp->body + i * addr_size);
 687                         break;
 688                 case 8:
 689                         addr = le64dec((char*)rsdp->body + i * addr_size);
 690                         break;
 691                 default:
 692                         assert((addr = 0));
 693                 }
 694
 695                 sdp = (struct ACPIsdt *)acpi_map_sdt(addr);
 696                 if (acpi_checksum(sdp, sdp->len)) {
 697                         warnx("RSDT entry %d (sig %.4s) is corrupt", i,
 698                             sdp->signature);
 699                         continue;
 700                 }
 701                 if (!memcmp(sdp->signature, "FACP", 4))
 702                         acpi_handle_fadt(sdp);
 703                 else if (!memcmp(sdp->signature, "APIC", 4))
 704                         acpi_handle_apic(sdp);
 705                 else if (!memcmp(sdp->signature, "HPET", 4))
 706                         acpi_handle_hpet(sdp);
 707                 else if (!memcmp(sdp->signature, "ECDT", 4))
 708                         acpi_handle_ecdt(sdp);
 709                 else if (!memcmp(sdp->signature, "MCFG", 4))
 710                         acpi_handle_mcfg(sdp);
 711                 else {
 712                         printf(BEGIN_COMMENT);
 713                         acpi_print_sdt(sdp);
 714                         printf(END_COMMENT);
 715                 }
 716         }
 717 }
 718
 719 struct ACPIsdt *
 720 sdt_load_devmem(void)
 721 {
 722         struct  ACPIrsdp *rp;
 723         struct  ACPIsdt *rsdp;
 724
 725         rp = acpi_find_rsd_ptr();
 726         if (!rp)
 727                 errx(1, "Can't find ACPI information");
 728
 729         if (tflag)
 730                 acpi_print_rsd_ptr(rp);
 731         if (rp->revision < 2) {
 732                 rsdp = (struct ACPIsdt *)acpi_map_sdt(rp->rsdt_addr);
 733                 if (memcmp(rsdp->signature, "RSDT", 4) != 0 ||
 734                     acpi_checksum(rsdp, rsdp->len) != 0)
 735                         errx(1, "RSDT is corrupted");
 736                 addr_size = sizeof(uint32_t);
 737         } else {
 738                 rsdp = (struct ACPIsdt *)acpi_map_sdt(rp->xsdt_addr);
 739                 if (memcmp(rsdp->signature, "XSDT", 4) != 0 ||
 740                     acpi_checksum(rsdp, rsdp->len) != 0)
 741                         errx(1, "XSDT is corrupted");
 742                 addr_size = sizeof(uint64_t);
 743         }
 744         return (rsdp);
 745 }
 746
 747 /* Write the DSDT to a file, concatenating any SSDTs (if present). */
 748 static int
 749 write_dsdt(int fd, struct ACPIsdt *rsdt, struct ACPIsdt *dsdt)
 750 {
 751         struct ACPIsdt sdt;
 752         struct ACPIsdt *ssdt;
 753         uint8_t sum;
 754
 755         /* Create a new checksum to account for the DSDT and any SSDTs. */
 756         sdt = *dsdt;
 757         if (rsdt != NULL) {
 758                 sdt.check = 0;
 759                 sum = acpi_checksum(dsdt->body, dsdt->len - SIZEOF_SDT_HDR);
 760                 ssdt = sdt_from_rsdt(rsdt, "SSDT", NULL);
 761                 while (ssdt != NULL) {
 762                         sdt.len += ssdt->len - SIZEOF_SDT_HDR;
 763                         sum += acpi_checksum(ssdt->body,
 764                             ssdt->len - SIZEOF_SDT_HDR);
 765                         ssdt = sdt_from_rsdt(rsdt, "SSDT", ssdt);
 766                 }
 767                 sum += acpi_checksum(&sdt, SIZEOF_SDT_HDR);
 768                 sdt.check -= sum;
 769         }
 770
 771         /* Write out the DSDT header and body. */
 772         write(fd, &sdt, SIZEOF_SDT_HDR);
 773         write(fd, dsdt->body, dsdt->len - SIZEOF_SDT_HDR);
 774
 775         /* Write out any SSDTs (if present.) */
 776         if (rsdt != NULL) {
 777                 ssdt = sdt_from_rsdt(rsdt, "SSDT", NULL);
 778                 while (ssdt != NULL) {
 779                         write(fd, ssdt->body, ssdt->len - SIZEOF_SDT_HDR);
 780                         ssdt = sdt_from_rsdt(rsdt, "SSDT", ssdt);
 781                 }
 782         }
 783         return (0);
 784 }
 785
 786 void
 787 dsdt_save_file(char *outfile, struct ACPIsdt *rsdt, struct ACPIsdt *dsdp)
 788 {
 789         int     fd;
 790         mode_t  mode;
 791
 792         assert(outfile != NULL);
 793         mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
 794         fd = open(outfile, O_WRONLY | O_CREAT | O_TRUNC, mode);
 795         if (fd == -1) {
 796                 perror("dsdt_save_file");
 797                 return;
 798         }
 799         write_dsdt(fd, rsdt, dsdp);
 800         close(fd);
 801 }
 802
 803 void
 804 aml_disassemble(struct ACPIsdt *rsdt, struct ACPIsdt *dsdp)
 805 {
 806         char tmpstr[32], buf[256];
 807         FILE *fp;
 808         int fd, len;
 809
 810         strcpy(tmpstr, "/tmp/acpidump.XXXXXX");
 811         fd = mkstemp(tmpstr);
 812         if (fd < 0) {
 813                 perror("iasl tmp file");
 814                 return;
 815         }
 816         write_dsdt(fd, rsdt, dsdp);
 817         close(fd);
 818
 819         /* Run iasl -d on the temp file */
 820         if (fork() == 0) {
 821                 close(STDOUT_FILENO);
 822                 if (vflag == 0)
 823                         close(STDERR_FILENO);
 824                 execl("/usr/sbin/iasl", "iasl", "-d", tmpstr, 0);
 825                 err(1, "exec");
 826         }
 827
 828         wait(NULL);
 829         unlink(tmpstr);
 830
 831         /* Dump iasl's output to stdout */
 832         fp = fopen("acpidump.dsl", "r");
 833         unlink("acpidump.dsl");
 834         if (fp == NULL) {
 835                 perror("iasl tmp file (read)");
 836                 return;
 837         }
 838         while ((len = fread(buf, 1, sizeof(buf), fp)) > 0)
 839                 fwrite(buf, 1, len, stdout);
 840         fclose(fp);
 841 }
 842
 843 void
 844 sdt_print_all(struct ACPIsdt *rsdp)
 845 {
 846         acpi_handle_rsdt(rsdp);
 847 }
 848
 849 /* Fetch a table matching the given signature via the RSDT. */
 850 struct ACPIsdt *
 851 sdt_from_rsdt(struct ACPIsdt *rsdt, const char *sig, struct ACPIsdt *last)
 852 {
 853         struct ACPIsdt *sdt;
 854         vm_offset_t addr;
 855         int entries, i;
 856
 857         entries = (rsdt->len - SIZEOF_SDT_HDR) / addr_size;
 858         for (i = 0; i < entries; i++) {
 859                 switch (addr_size) {
 860                 case 4:
 861                         addr = le32dec((char*)rsdt->body + i * addr_size);
 862                         break;
 863                 case 8:
 864                         addr = le64dec((char*)rsdt->body + i * addr_size);
 865                         break;
 866                 default:
 867                         assert((addr = 0));
 868                 }
 869                 sdt = (struct ACPIsdt *)acpi_map_sdt(addr);
 870                 if (last != NULL) {
 871                         if (sdt == last)
 872                                 last = NULL;
 873                         continue;
 874                 }
 875                 if (memcmp(sdt->signature, sig, strlen(sig)))
 876                         continue;
 877                 if (acpi_checksum(sdt, sdt->len))
 878                         errx(1, "RSDT entry %d is corrupt", i);
 879                 return (sdt);
 880         }
 881
 882         return (NULL);
 883 }
 884
 885 struct ACPIsdt *
 886 dsdt_from_fadt(struct FADTbody *fadt)
 887 {
 888         struct  ACPIsdt *sdt;
 889
 890         /* Use the DSDT address if it is version 1, otherwise use X_DSDT. */
 891         if (acpi_get_fadt_revision(fadt) == 1)
 892                 sdt = (struct ACPIsdt *)acpi_map_sdt(fadt->dsdt_ptr);
 893         else
 894                 sdt = (struct ACPIsdt *)acpi_map_sdt(fadt->x_dsdt_ptr);
 895         if (acpi_checksum(sdt, sdt->len))
 896                 errx(1, "DSDT is corrupt\n");
 897         return (sdt);
 898 }