This series calls the dma ops configuration for the devices at a generic place so that it works for all busses. The dma_configure_ops for a device is now called during the device_attach callback just before the probe of the bus/driver is called. Similarly dma_deconfigure is called during device/driver_detach path. pci_bus_add_devices (platform/amba)(_device_create/driver_register) | | pci_bus_add_device (device_add/driver_register) | | device_attach device_initial_probe | | __device_attach_driver __device_attach_driver | driver_probe_device | really_probe | dma_configure Similarly on the device/driver_unregister path __device_release_driver is called which inturn calls dma_deconfigure. Took the reworked patches [2] from Robin's branch and rebased on top of Lorenzo's ACPI IORT ARM support series [3]. Tested with platform and pci devices for probe deferral and reprobe on arm64 based platform. Added the patches [9,10], drivers: acpi: Configure acpi devices dma operation at probe time drivers: acpi: Handle IOMMU lookup failure with deferred probing or error for doing the dma ops configuration at probe time for acpi based platform as well. Did not have a acpi based platform to test the changes and with my still catching up knowledge on acpi/enumeration those two patches needs to be reviewed/tested more. Previous post of this series [5]. [V4] * Took the reworked patches [2] from Robin's branch and rebased on top of Lorenzo's ACPI IORT ARM support series [3]. * Added the patches for moving the dma ops configuration of acpi based devices to probe time as well. [V3] * Removed the patch to split dma_masks/dma_ops configuration separately based on review comments that both masks and ops are required only during the device probe time. * Reworked the series based on Generic DT bindings series. * Added call to iommu's remove_device in the cleanup path for arm and arm64. * Removed the notifier trick in arm64 to handle early device registration. * Added reset of dma_ops in cleanup path for arm based on comments. * Fixed the pci_iommu_configure path and tested with PCI device as well. * Fixed a bug to return the correct iommu_ops from patch 7 [4] in last post. * Fixed few other cosmetic comments. [V2] * Updated the Initial post to call dma_configure/deconfigure from generic code * Added iommu add_device callback from of_iommu_configure path [V1] * Initial post from Laurent Pinchart [1] [1] http://lists.linuxfoundation.org/pipermail/iommu/2015-May/013016.html [2] http://www.linux-arm.org/git?p=linux-rm.git;a=shortlog;h=refs/heads/iommu/defer [3] https://lkml.org/lkml/2016/11/21/141 [4] https://www.mail-archive.com/iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx/msg13940.html [5] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-October/460832.html Laurent Pinchart (3): of: dma: Move range size workaround to of_dma_get_range() of: dma: Make of_dma_deconfigure() public iommu: of: Handle IOMMU lookup failure with deferred probing or error Robin Murphy (3): iommu/of: Refactor of_iommu_configure() for error handling iommu/of: Prepare for deferred IOMMU configuration iommu/arm-smmu: Clean up early-probing workarounds Sricharan R (4): drivers: platform: Configure dma operations at probe time arm64: dma-mapping: Remove the notifier trick to handle early setting of dma_ops drivers: acpi: Configure acpi devices dma operation at probe time drivers: acpi: Handle IOMMU lookup failure with deferred probing or error arch/arm64/mm/dma-mapping.c | 132 ++++---------------------------------------- drivers/acpi/arm64/iort.c | 17 +++++- drivers/acpi/glue.c | 6 -- drivers/acpi/scan.c | 7 ++- drivers/base/dd.c | 10 ++++ drivers/base/dma-mapping.c | 32 +++++++++++ drivers/iommu/arm-smmu-v3.c | 35 +----------- drivers/iommu/arm-smmu.c | 58 +++---------------- drivers/iommu/dma-iommu.c | 1 + drivers/iommu/of_iommu.c | 114 +++++++++++++++++++++++++++----------- drivers/of/address.c | 20 ++++++- drivers/of/device.c | 36 ++++++------ drivers/of/platform.c | 10 +--- drivers/pci/probe.c | 17 +++--- include/acpi/acpi_bus.h | 2 +- include/linux/acpi.h | 7 ++- include/linux/dma-mapping.h | 3 + include/linux/of_device.h | 10 +++- include/linux/pci.h | 5 ++ 19 files changed, 238 insertions(+), 284 deletions(-) -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html