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| Peripheral Description Notation Examples |
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hba0 at pci0: HBA instance 0 is connected to PCI bus 0

... can be more specific (with BDF + slot)

hba0 at pci0:2922.00.3
           ^    ^  ^  ^
           bus dev func slot

hba* at pci0: (hba<wildcard>) All HBA instances on PCI bus 0
hba0 at pci?: (* .. <pci:unknown>) HBA instance 0 on PCI bus ? (could be any)