From: Laurentiu Tudor laurentiu.tudor@nxp.com
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.
Changes in v4: - rebased - fixed compilation issue on ls1021a based boards
Changes in v3: - rebased - trimmed commit message of the last patch - minor adjustments to the readme file
Changes in v2: - add ARI support and use it by default - option to disable ARI - fixes in BDF calculation - reorganized code a bit - added more comments
Laurentiu Tudor (4): pci: layerscape: move per-pci device fdt fixup in a function pci: layerscape: move pci node search in a common function pci: add a few ARI related defines pci: layerscape: add a way of specifying additional iommu mappings
.../fsl-layerscape/doc/README.pci_iommu_extra | 67 +++ drivers/pci/Kconfig | 12 + drivers/pci/pcie_layerscape_fixup.c | 460 +++++++++++++++--- include/pci.h | 6 + 4 files changed, 480 insertions(+), 65 deletions(-) create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/doc/README.pci_iommu_extra