[LinuxBIOS] The device number of PCIe

[Rudolf Marek]

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> In PCI, the IDSEL pin defines the device number. But in PCIe, there is
> no such pin, how is the device number defined?

Imho for each slot there is PCI-PCI bridge.

00:02.0 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller
00:03.0 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller
00:03.1 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller
00:03.2 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller
00:03.3 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller

You can turn on/off in the bridge if the bridge decodes just one address -
otherwise you will see it as all devices possible behind the bridge. xx:00-xx:31

Thats all I know. :) Maybe you can take a look to PCIe express specs.

Rudolf
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