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297679 |
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07-Apr-2016 |
jhb |
Associate device_t objects with ACPI handles via PCI_CHILD_ADDED().
Previously, the ACPI PCI bus driver did a single pass over the devices in the namespace that were a child of a given PCI bus to associate the PCI bus-enumerated device_t devices with the corresponding ACPI handles. However, this meant that handles were only established at runtime for devices found during the initial PCI bus scan.
PCI_IOV adds devices that show up after the initial PCI bus scan, and coming changes to add a bus rescan can also add devices after the initial scan.
This change adds a pci_child_added() callback to the ACPI PCI bus that walks the namespace to find the ACPI handle for each device that is added. Using a callback means that the handle is correctly set for any device no matter how it is added (initial scan, IOV, or a bus rescan).
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