On 2015/10/21 23:52, Suravee Suthikulpanit wrote: > This patch series adds support to setup DMA coherency for PCI device using > the ACPI _CCA attribute. According to the ACPI spec, the _CCA attribute > is required for ARM64. Therefore, this patch is a pre-req for ACPI PCI > support for ARM64 which is currently in development. Also, this should > not affect other architectures that does not define > CONFIG_ACPI_CCA_REQUIRED, since the default value is coherent. > > In the process, this series also introduces enum dev_dma_attr and a set > of APIs to query device DMA attribute. These APIs replace the obsolete > device_dma_is_coherent(), and acpi_check_dma(). > > I have also included a patch from Jeremy posted here: > http://www.spinics.net/lists/linux-usb/msg128582.html > > This patch series has been tested on AMD Seattle RevB platform. > The git tree containing tested code and pre-req patches are posted here: > > http://github.com/ssuthiku/linux.git pci-cca-v4 > > Changes from V3: (https://lkml.org/lkml/2015/8/26/389) > * Clean up suggested by Bjorn > * Introduce enum dev_dma_attr > * Replace device_dma_is_coherent() and acpi_check_dma() with > new APIs. > > Changes from V2: (https://lkml.org/lkml/2015/8/25/549) > * Return -ENOSUPP instead of -1 (per Rafael's suggestion) > * Add WARN() when fail to setup DMA for PCI device when booting > ACPI (per Arnd's suggestion) > * Added Acked-by from Rob. > * Minor clean up > > Changes from V1: (https://lkml.org/lkml/2015/8/13/182) > * Include patch 1 from Jeremy to enable support for _CCA=0 > * Clean up acpi_check_dma() per Bjorn suggestions > * Split the original V1 patch into two patches (patch 3 and 4) > > Jeremy Linton (1): > Honor ACPI _CCA attribute setting > > Suravee Suthikulpanit (7): > device property: Introducing enum dev_dma_attr > acpi: Adding DMA Attribute APIs for ACPI Device > device property: Adding DMA Attribute APIs for Generic Devices > device property: acpi: Make use of the new DMA Attribute APIs > device property: acpi: Remove unused DMA APIs > PCI: OF: Move of_pci_dma_configure() to pci_dma_configure() > PCI: ACPI: Add support for PCI device DMA coherency If the minor comments for patch 7,8 are addressed, Reviewed-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> Thanks Hanjun -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
