This patch series is v7 of a previous posting: https://lkml.org/lkml/2016/10/18/506 v6 -> v7 - Rebased against v4.9-rc4 - Fixed IORT probing on ACPI systems with missing IORT table - Fixed SMMUv1/v2 global interrupt detection - Updated iommu_ops firmware look-up v5 -> v6 - Rebased against v4.9-rc1 - Changed FWNODE_IOMMU to FWNODE_ACPI_STATIC - Moved platform devices creation into IORT code - Updated fwnode handling - Added default dma masks initialization v4 -> v5 - Added SMMUv1/v2 support - Rebased against v4.8-rc5 and dependencies series - Consolidated IORT platform devices creation v3 -> v4 - Added single mapping API (for IORT named components) - Fixed arm_smmu_iort_xlate() return value - Reworked fwnode registration and platform device creation ordering to fix probe ordering dependencies - Added code to keep device_node ref count with new iommu fwspec API - Added patch to make iommu_fwspec arch agnostic - Dropped RFC status - Rebased against v4.8-rc2 v2 -> v3 - Rebased on top of dependencies series [1][2][3](v4.7-rc3) - Added back reliance on ACPI early probing infrastructure - Patch[1-3] merged through other dependent series - Added back IOMMU fwnode generalization - Move SMMU v3 static functions configuration to IORT code - Implemented generic IOMMU fwspec API - Added code to implement fwnode platform device look-up v1 -> v2: - Rebased on top of dependencies series [1][2][3](v4.7-rc1) - Removed IOMMU fwnode generalization - Implemented ARM SMMU v3 ACPI probing instead of ARM SMMU v2 owing to patch series dependencies [1] - Moved platform device creation logic to IORT code to generalize its usage for ARM SMMU v1-v2-v3 components - Removed reliance on ACPI early device probing - Created IORT specific iommu_xlate() translation hook leaving OF code unchanged according to v1 reviews The ACPI IORT table provides information that allows instantiating ARM SMMU devices and carrying out id mappings between components on ARM based systems (devices, IOMMUs, interrupt controllers). http://infocenter.arm.com/help/topic/com.arm.doc.den0049b/DEN0049B_IO_Remapping_Table.pdf Building on basic IORT support, this patchset enables ARM SMMUs support on ACPI systems. Most of the code is aimed at building the required generic ACPI infrastructure to create and enable IOMMU components and to bring the IOMMU infrastructure for ACPI on par with DT, which is going to make future ARM SMMU components easier to integrate. PATCH (1) adds a FWNODE_ACPI_STATIC type to the struct fwnode_handle type. It is required to attach a fwnode identifier to platform devices allocated/detected through static ACPI table entries (ie IORT tables entries). IOMMU devices have to have an identifier to look them up eg IOMMU core layer carrying out id translation. This can be done through a fwnode_handle (ie IOMMU platform devices created out of IORT tables are not ACPI devices hence they can't be allocated as such, otherwise they would have a fwnode_handle of type FWNODE_ACPI). PATCH (2) makes use of the ACPI early probing API to add a linker script section for probing devices via IORT ACPI kernel code. PATCH (3) provides IORT support for registering IOMMU IORT node through their fwnode handle. PATCH (4) make of_iommu_{set/get}_ops() functions DT agnostic. PATCH (5) convert ARM SMMU driver to use fwnode instead of of_node as look-up and iommu_ops retrieval token. PATCH (6) convert ARM SMMU v3 driver to use fwnode instead of of_node as look-up and iommu_ops retrieval token. PATCH (7) implements the of_dma_configure() API in ACPI world - acpi_dma_configure() - and patches PCI and ACPI core code to start making use of it. PATCH (8) provides an IORT function to detect existence of specific type of IORT components. PATCH (9) creates the kernel infrastructure required to create ARM SMMU platform devices for IORT nodes. PATCH (10) refactors the ARM SMMU v3 driver so that the init functions are split in a way that groups together code that probes through DT and code that carries out HW registers FW agnostic probing, in preparation for adding the ACPI probing path. PATCH (11) adds ARM SMMU v3 IORT IOMMU operations to create and probe ARM SMMU v3 components. PATCH (12) refactors the ARM SMMU v1/v2 driver so that the init functions are split in a way that groups together code that probes through DT and code that carries out HW registers FW agnostic probing, in preparation for adding the ACPI probing path. PATCH (13) adds ARM SMMU v1/v2 IORT IOMMU operations to create and probe ARM SMMU v1/v2 components. PATCH (14) Extend the IORT iort_node_map_rid() to work on a type mask instead of a single type so that the translation API can be used on a range of components. PATCH (15) Add IORT API to carry out id mappings for components that do do not have an input identifier/RIDs (ie named components). PATCH (16) provides IORT infrastructure to carry out IOMMU configuration for devices and hook it up to the previously introduced ACPI DMA configure API. This patchset is provided for review/testing purposes here: git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/linux.git acpi/iort-smmu-v7 Tested on Juno and FVP models for ARM SMMU v1 and v3 probing path. Lorenzo Pieralisi (16): drivers: acpi: add FWNODE_ACPI_STATIC fwnode type drivers: acpi: iort: introduce linker section for IORT entries probing drivers: acpi: iort: add support for IOMMU fwnode registration drivers: iommu: make of_iommu_set/get_ops() DT agnostic drivers: iommu: arm-smmu: convert struct device of_node to fwnode usage drivers: iommu: arm-smmu-v3: convert struct device of_node to fwnode usage drivers: acpi: implement acpi_dma_configure drivers: acpi: iort: add node match function drivers: acpi: iort: add support for ARM SMMU platform devices creation drivers: iommu: arm-smmu-v3: split probe functions into DT/generic portions drivers: iommu: arm-smmu-v3: add IORT configuration drivers: iommu: arm-smmu: split probe functions into DT/generic portions drivers: iommu: arm-smmu: add IORT configuration drivers: acpi: iort: replace rid map type with type mask drivers: acpi: iort: add single mapping function drivers: acpi: iort: introduce iort_iommu_configure drivers/acpi/arm64/iort.c | 596 +++++++++++++++++++++++++++++++++++++- drivers/acpi/glue.c | 4 +- drivers/acpi/scan.c | 45 +++ drivers/iommu/arm-smmu-v3.c | 105 +++++-- drivers/iommu/arm-smmu.c | 154 ++++++++-- drivers/iommu/iommu.c | 42 +++ drivers/iommu/of_iommu.c | 39 --- drivers/pci/probe.c | 3 +- include/acpi/acpi_bus.h | 2 + include/asm-generic/vmlinux.lds.h | 1 + include/linux/acpi.h | 26 ++ include/linux/acpi_iort.h | 14 + include/linux/fwnode.h | 3 +- include/linux/iommu.h | 14 + include/linux/of_iommu.h | 12 +- 15 files changed, 956 insertions(+), 104 deletions(-) -- 2.10.0 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
