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Identifiers for PCI Devices

Last Updated: 7/30/2016

The following is a list of the device identification string formats that the PCI bus driver uses to report hardware IDs. When the Plug and Play (PnP) manager queries the driver for the hardware IDs of a device, the PCI bus driver returns a list of hardware IDs in order of increasing generality.

PCI\VEN_v(4)&DEV_d(4)&SUBSYS_s(4)n(4)&REV_r(2)

PCI\VEN_v(4)&DEV_d(4)&SUBSYS_s(4)n(4)

PCI\VEN_v(4)&DEV_d(4)&REV_r(2)

PCI\VEN_v(4)&DEV_d(4)

PCI\VEN_v(4)&DEV_d(4)&CC_c(2)s(2)p(2)

PCI\VEN_v(4)&DEV_d(4)&CC_c(2)s(2)

Where:

  • v(4) is the four-character PCI SIG-assigned identifier for the vendor of the device, where the term device, following PCI SIG usage, refers to a specific PCI chip.

  • d(4) is the four-character vendor-defined identifier for the device.

  • s(4) is the four-character vendor-defined subsystem identifier.

  • n(4) is the four-character PCI SIG-assigned identifier for the vendor of the subsystem.

  • r(2) is the two-character revision number.

  • c(2) is the two-character base class code from the configuration space.

  • s(2) is the two-character subclass code.

  • p(2) is the Programming Interface code.

The following is an example of a hardware ID for a display adapter on a portable computer. The format of this hardware ID is PCI\VEN_v(4)&DEV_d(4)&SUBSYS_s(4)n(4)&REV_r(2).

PCI\VEN_102C&DEV_00E0&SUBSYS_00000000&REV_04

The following is the hardware ID for the display adapter in the previous example with the revision information removed. The format of this hardware ID is PCI\VEN_v(4)&DEV_d(4)&SUBSYS_s(4)n(4).

PCI\VEN_102C&DEV_00E0&SUBSYS_00000000

The following is a list of the device identification string formats that the PCI bus driver uses to report compatible IDs. The variety of these formats provides substantial flexibility to specify compatible IDs. The PCI bus driver constructs a list of compatible IDs based on the information that the driver can obtain from the device. When the PnP manager queries the driver for the compatible IDs of a device, the PCI bus driver returns a list of compatible IDs in order of decreasing compatibility.

PCI\VEN_v(4)&DEV_d(4)&REV_r(2)

PCI\VEN_v(4)&DEV_d(4)

PCI\VEN_v(4)&CC_c(2)s(2)p(2)

PCI\VEN_v(4)&CC_c(2)s(2)

PCI\VEN_v(4)

PCI\CC_c(2)s(2)p(2)&DT_d(4) (applies only to a PCI Express device)

PCI\CC_c(2)s(2)p(2)

PCI\CC_c(2)s(2)&DT_d(4) (applies only to a PCI Express device)

PCI\CC_c(2)s(2)`

Where:

  • The definitions of the following fields in a compatible ID are identical to the definitions of the corresponding fields that used in a hardware ID: v(4), r(2), c(2), s(2), and p(2).

  • d(4) in the DEV_d(4) field is the four-character vendor-defined identifier for the device.

  • d(4) in the DT_d(4) field is the four-character device type, as specified in the PCI Express Base specification.

For the example of a display adapter on a portable computer, any of the following compatible IDs would match the information in an INF file for that adapter:

PCI\VEN_102C&DEV_00E0&REV_04

PCI\VEN_102C&DEV_00E0

PCI\VEN_102C&DEV_00E0&REV_04&CC_0300

PCI\VEN_102C&DEV_00E0&CC_030000

PCI\VEN_102C&DEV_00E0&CC_0300

PCI\VEN_102C&CC_030000

PCI\VEN_102C&CC_0300

PCI\VEN_102C

PCI\CC_030000

PCI\CC_0300

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