From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: From: Sricharan R To: robin.murphy@arm.com, will.deacon@arm.com, joro@8bytes.org, lorenzo.pieralisi@arm.com, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, m.szyprowski@samsung.com, bhelgaas@google.com, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, tn@semihalf.com, hanjun.guo@linaro.org, okaya@codeaurora.org Subject: [PATCH V8 00/11] IOMMU probe deferral support Date: Fri, 3 Feb 2017 21:18:42 +0530 Message-Id: <1486136933-20328-1-git-send-email-sricharan@codeaurora.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: sricharan@codeaurora.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+bjorn=helgaas.com@lists.infradead.org List-ID: 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. Rebased the series against linux-next. Please note that there is an conflict in patch#9 while applying against iommu-next because of the below patch not being there on iommu-next "arm64: dma-mapping: Only swizzle DMA ops for IOMMU_DOMAIN_DMA" https://www.spinics.net/lists/arm-kernel/msg556209.html Similarly there was conflict in patch#1 and patch#9 while applying against master because of the above patch not there and additionally the below one not being there. "iommu: Drop the of_iommu_{set/get}_ops() interface" https://lkml.org/lkml/2017/1/3/489 * Tested with platform and pci devices for probe deferral and reprobe on arm64 based platform. Build tested on linux-next, iommu-next, master. Previous post of this series [6]. [V8] * Picked up all the acks and tested tags from Marek and Hanjun for DT and ACPI patches respectively, since no functional changes was done. * Addressed Minor comments Sinan and Bjorn. * Added Robin's fix for fixing the deferencing NULL for of_iommu_table after init in patch #2. * Rebased it on top of linux-next [V7] * Updated the subject and commit log for patch #6 as per comments from Lorenzo. No functional changes. [V6] * Fixed a bug in dma_configure function pointed out by Robin. * Reordered the patches as per comments from Robin and Lorenzo. * Added Tags. [V5] * Reworked the pci configuration code hanging outside and pushed it to dma_configure as in PATCH#5,6,7. Also added a couple of patches that Lorenzo provided for correcting the Probe deferring mechanism in case of ACPI devices from here [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@lists.linux-foundation.org/msg13940.html [5] git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/linux.git iommu/probe-deferral [6] https://www.spinics.net/lists/arm-kernel/msg557110.html [7] https://www.spinics.net/lists/arm-kernel/msg556209.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 Lorenzo Pieralisi (2): ACPI/IORT: Add function to check SMMUs drivers presence ACPI/IORT: Remove linker section for IORT entries probing 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 (3): of/acpi: Configure dma operations at probe time for platform/amba/pci bus devices drivers: acpi: Handle IOMMU lookup failure with deferred probing or error arm64: dma-mapping: Remove the notifier trick to handle early setting of dma_ops arch/arm64/mm/dma-mapping.c | 142 +++++--------------------------------- drivers/acpi/arm64/iort.c | 40 ++++++++++- drivers/acpi/glue.c | 5 -- drivers/acpi/scan.c | 7 +- drivers/base/dd.c | 9 +++ drivers/base/dma-mapping.c | 41 +++++++++++ drivers/iommu/arm-smmu-v3.c | 46 +----------- drivers/iommu/arm-smmu.c | 58 +++------------- drivers/iommu/of_iommu.c | 126 ++++++++++++++++++++++++--------- drivers/of/address.c | 20 +++++- drivers/of/device.c | 34 ++++----- drivers/of/platform.c | 10 +-- drivers/pci/probe.c | 28 -------- include/acpi/acpi_bus.h | 2 +- include/asm-generic/vmlinux.lds.h | 1 - include/linux/acpi.h | 7 +- include/linux/acpi_iort.h | 3 - include/linux/dma-mapping.h | 3 + include/linux/of_device.h | 10 ++- 19 files changed, 269 insertions(+), 323 deletions(-) -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel