dmi_pci_addr

Synopsis

#include <opendmi/entity/common.h>

typedef struct dmi_pci_addr {
    uint16_t segment_group;
    uint8_t bus_number;
    uint8_t device_number;
    uint8_t function_number;
} dmi_pci_addr_t;

Description

The dmi_pci_addr_t structure holds the address of a PCI, AGP, PCI-X or PCI Express function: its segment group, bus, device and function numbers. It is shared by several structures: it is the type of the base_address field of dmi_slot_t, of the address field of the peer groups of slots (dmi_slot_peer_group_t), and of the address field of dmi_onboard_device_ex_t.

SMBIOS packs the device and function numbers into one byte; the structure holds them apart. Devices which have no such address carry the largest value in each field.

Fields

segment_group

Segment group, as the PCI firmware specification defines it. It is 0 for a single-segment topology, and UINT16_MAX if not applicable.

bus_number

Bus number, or UINT8_MAX if not applicable.

device_number

Device number, 0 to 31, or UINT8_MAX if the bus number is not applicable.

function_number

Function number, 0 to 7, or UINT8_MAX if the bus number is not applicable.

See also

dmi_slot, dmi_slot_peer_group, dmi_onboard_device_ex

Standards

DMTF SMBIOS Specification (DSP0134), version 2.6 or newer.