From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sricharan R Subject: [PATCH V7 00/11] IOMMU probe deferral support Date: Mon, 23 Jan 2017 21:48:02 +0530 Message-ID: <1485188293-20263-1-git-send-email-sricharan@codeaurora.org> Return-path: Sender: linux-acpi-owner@vger.kernel.org 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 Cc: sricharan@codeaurora.org List-Id: linux-arm-msm@vger.kernel.org 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. * Need help for testing with ACPI. Previous post of this series [6]. [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/msg556546.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 | 132 ++++---------------------------------- 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 | 114 +++++++++++++++++++++++--------- drivers/of/address.c | 20 +++++- drivers/of/device.c | 36 ++++++----- 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, 252 insertions(+), 320 deletions(-) -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation From mboxrd@z Thu Jan 1 00:00:00 1970 From: sricharan@codeaurora.org (Sricharan R) Date: Mon, 23 Jan 2017 21:48:02 +0530 Subject: [PATCH V7 00/11] IOMMU probe deferral support Message-ID: <1485188293-20263-1-git-send-email-sricharan@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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. * Need help for testing with ACPI. Previous post of this series [6]. [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 at 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/msg556546.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 | 132 ++++---------------------------------- 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 | 114 +++++++++++++++++++++++--------- drivers/of/address.c | 20 +++++- drivers/of/device.c | 36 ++++++----- 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, 252 insertions(+), 320 deletions(-) -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation