Q: Relation between lanes to devices and to BARs

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Hello,

I am new to pci express drivers, and would please like to ask a question.
We develop a linux driver for a PCIe device board with 4 lanes.
1. Is it expected that this will be recognized as a single device or
multiple device ?
2. Is it that each lane rales to a different BAR or there is no
connection between these two ?

Thank you,
Ran
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