Your device is connected to bus0 (first bus).Ģ) Device (physical): There can be several devices on bus, Video adapter is device number 2.ģ) Function (logical device) Each device may host several functions: Sound card may have PCM and MIDI, multi-card may have several serial ports etc. On PCI and PCI express each device has unique topological address.ġ) Bus: There could be several buses connected to first pci bus using bridge: It then asks Root Complex to list all devices it has, and finally creates device tree. Implicit routing is used only for certain message TLPs (Transfer Layer Package), such as broadcasts from Root Complex and messages that always go to the Root Complex. It uses ACPI tables provided by motherboard firmware to find Root Complex and some built-in devices. On each boot Windows pnp manager (subsystem running in kernel space) builds device tree. All other PCI-Express devices (like your 802.11(wifi) adapter) are also on this bus although they are not built-it like GPU. You have PCI Express bus whose controller (aka "Root Complex") is built directly into your CPU. It is not "properties", it is your video card topological location in terms of PCI: bus/device/functuion.
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