dmi_intel_rsd_processor_cpuid
Synopsis
#include <opendmi/entity/intel-rsd/processor-cpuid.h>
#include <opendmi/module/intel-rsd.h>
typedef struct dmi_intel_rsd_processor_cpuid {
const char *socket_designation;
dmi_intel_rsd_cpuid_subtype_t subtype;
size_t leaf_count;
dmi_intel_rsd_cpuid_leaf_t *leaves;
bool is_raw;
dmi_binary_t data;
} dmi_intel_rsd_processor_cpuid_t;Description
The dmi_intel_rsd_processor_cpuid_t structure holds the decoded processor
CPUID information structure (type 193) of Intel Rack Scale Design (RSD)
firmware: what the CPUID instruction returns on a processor of the system, for
a fixed list of leaves. Leaves 00h to 10h and leaves 14h to 80000008h are
carried by structures of two different subtypes, so that a processor usually
has one structure of each. The firmware builds them late during boot, so that
they reflect the current configuration of the system.
The structure stores the register values only; the leaf and subleaf numbers come from the list of the subtype. Subtype 1 lists leaves 00h to 07h, 09h, 0Ah, 0Bh, and 0Dh, 0Fh and 10h with subleaf 0. Subtype 2 lists leaf 14h with subleaf 0, leaves 15h and 16h, leaf 17h with subleaves 0 to 3, leaves 80000000h to 80000004h, and 80000006h to 80000008h.
The structure is returned by dmi_entity_info for the structures of type
DMI_TYPE(intel_rsd_processor_cpuid), once the Intel RSD extension module
(dmi_intel_rsd_module, declared in <opendmi/module/intel-rsd.h>) has been
enabled in the context with dmi_add_extension(). It lives as long as the
context it has been decoded in.
Fields
socket_designation-
Label of the socket or board position of the processor, such as "Socket 0".
nullptrif the structure does not carry it. subtype-
Set of leaves the structure holds (see
dmi_intel_rsd_cpuid_subtype). leaf_count-
Number of elements of
leaves: the leaves the structure holds completely. A structure cut short holds fewer leaves than its subtype lists. Zero if the subtype is unknown. leaves-
CPUID leaves, in the order the subtype lists them (see
dmi_intel_rsd_cpuid_leaf).nullptrif the subtype is unknown. is_raw-
Set if the subtype is unknown: the leaves cannot be told apart then, and the data is kept in
datainstead. data-
Data following the subtype, as stored in the structure, if the subtype is unknown; empty otherwise. The data points into the structure and lives as long as the context.
Examples
dmi_registry_t *registry = dmi_get_registry(context);
dmi_entity_t *entity = dmi_registry_lookup_first(registry,
DMI_TYPE(intel_rsd_processor_cpuid), true);
dmi_intel_rsd_processor_cpuid_t *cpuid =
dmi_entity_info(entity, DMI_TYPE(intel_rsd_processor_cpuid));
if (cpuid != nullptr) {
for (size_t i = 0; i < cpuid->leaf_count; i++) {
const dmi_intel_rsd_cpuid_leaf_t *leaf = &cpuid->leaves[i];
if (leaf->leaf == 0x01)
printf("Processor signature: %08X\n", (unsigned)leaf->eax);
}
}