diff options
Diffstat (limited to 'sys/ia64/acpica/acpi_machdep.c')
| -rw-r--r-- | sys/ia64/acpica/acpi_machdep.c | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/sys/ia64/acpica/acpi_machdep.c b/sys/ia64/acpica/acpi_machdep.c index e5623fb..b7b612f 100644 --- a/sys/ia64/acpica/acpi_machdep.c +++ b/sys/ia64/acpica/acpi_machdep.c @@ -28,11 +28,12 @@ #include <sys/param.h> #include <sys/bus.h> +#include <machine/md_var.h> +#include <machine/pal.h> #include <contrib/dev/acpica/include/acpi.h> - +#include <contrib/dev/acpica/include/actables.h> #include <dev/acpica/acpivar.h> -#include <machine/pal.h> int acpi_machdep_init(device_t dev) @@ -57,3 +58,37 @@ acpi_cpu_c1() { ia64_call_pal_static(PAL_HALT_LIGHT, 0, 0, 0); } + +void * +acpi_find_table(const char *sig) +{ + ACPI_PHYSICAL_ADDRESS rsdp_ptr; + ACPI_TABLE_RSDP *rsdp; + ACPI_TABLE_XSDT *xsdt; + ACPI_TABLE_HEADER *table; + UINT64 addr; + u_int i, count; + + if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0) + return (NULL); + + rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr); + xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress); + + count = (UINT64 *)((char *)xsdt + xsdt->Header.Length) - + xsdt->TableOffsetEntry; + + for (i = 0; i < count; i++) { + addr = xsdt->TableOffsetEntry[i]; + table = (ACPI_TABLE_HEADER *)IA64_PHYS_TO_RR7(addr); + + if (strncmp(table->Signature, sig, ACPI_NAME_SIZE) != 0) + continue; + if (ACPI_FAILURE(AcpiTbChecksum((void *)table, table->Length))) + continue; + + return (table); + } + + return (NULL); +} |
