From: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
To: bhelgaas@google.com, robh+dt@kernel.org, mark.rutland@arm.com
Cc: linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, Grant.Likely@arm.com,
Jeremy.Linton@arm.com, Robin.Murphy@arm.com
Subject: [PATCH 0/2] PCI: Describe external-facing ports in device tree
Date: Mon, 18 Mar 2019 18:21:22 +0000 [thread overview]
Message-ID: <20190318182124.53859-1-jean-philippe.brucker@arm.com> (raw)
Add an "external-facing" property to PCI ports in device-tree, to help
identify untrusted devices. The notion of untrusted PCI devices was
added to the v5.0 kernel to describe devices that should have strict
IOMMU protection [1], for example devices that are plugged in a
thunderbolt port. ACPI systems use the ExternalFacingPort property [2].
Add an equivalent mechanism to device tree.
[1] https://lkml.org/lkml/2018/11/26/631
[2] https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports#identifying-externally-exposed-pcie-root-ports
Jean-Philippe Brucker (2):
dt-bindings: Add external-facing PCIe port property
PCI: OF: Support external-facing property
Documentation/devicetree/bindings/pci/pci.txt | 47 +++++++++++++++++++
drivers/pci/of.c | 3 ++
2 files changed, 50 insertions(+)
--
2.21.0
next reply other threads:[~2019-03-18 18:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-18 18:21 Jean-Philippe Brucker [this message]
2019-03-18 18:21 ` [PATCH 1/2] dt-bindings: Add external-facing PCIe port property Jean-Philippe Brucker
2019-03-20 22:03 ` Bjorn Helgaas
2019-03-25 12:59 ` Jean-Philippe Brucker
2019-03-25 13:53 ` Bjorn Helgaas
2019-03-18 18:21 ` [PATCH 2/2] PCI: OF: Support external-facing property Jean-Philippe Brucker
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