From patchwork Tue Jun 9 10:45:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurentiu Tudor X-Patchwork-Id: 241996 List-Id: U-Boot discussion From: laurentiu.tudor at nxp.com (laurentiu.tudor at nxp.com) Date: Tue, 9 Jun 2020 13:45:07 +0300 Subject: [PATCH 0/3] Support for specifying extra IOMMU mappings for PCI Message-ID: <20200609104510.19781-1-laurentiu.tudor@nxp.com> From: Laurentiu Tudor In the current implementation, u-boot creates iommu mappings only for PCI devices enumarated at boot time thus does not take into account more dynamic scenarios such as SR-IOV or PCI hot-plug. Add support for specifying extra IOMMU mappings for PCI controllers through a special env var called "pci_iommu_extra" or through a device tree property named "pci-iommu-extra" placed in the node describing the PCI controller. More detailed information can be found in the final patch. Laurentiu Tudor (3): pci: layerscape: move per-pci device fdt fixup in a function pci: layerscape: move pci node search in a common function pci: layerscape: add a way of specifying additional iommu mappings .../fsl-layerscape/doc/README.pci_iommu_extra | 68 ++++ drivers/pci/Kconfig | 12 + drivers/pci/pcie_layerscape_fixup.c | 317 +++++++++++++----- 3 files changed, 318 insertions(+), 79 deletions(-) create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/doc/README.pci_iommu_extra