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Add an acpi attachment to the pci_host_generic driver and have the ACPI

Description

Add an acpi attachment to the pci_host_generic driver and have the ACPI
bus provide it with its needed memory resources.

This allows us to use PCIe on the ThunderX2 and, with a previous version
of the patch, on the SoftIron 3000 with ACPI.

Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
Sponsored by: DARPA, AFRL
Sponsored by: Cavium (Hardware)
Differential Revision: https://reviews.freebsd.org/D8767

Details

Provenance
andrewAuthored on
Differential Revision
D8767: ACPI for PCIe on arm64
Parents
rS330574: Restrict the arm64 DMAP region to the 1G blocks where we have at least
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