Hi Suravee, On Wed, Oct 21, 2015 at 08:52:03AM -0700, 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 > > drivers/acpi/acpi_platform.c | 7 +++++- > drivers/acpi/glue.c | 8 +++--- > drivers/acpi/scan.c | 42 +++++++++++++++++++++++++++++++ > drivers/base/property.c | 32 +++++++++++++++++------ > drivers/crypto/ccp/ccp-platform.c | 9 ++++++- > drivers/net/ethernet/amd/xgbe/xgbe-main.c | 9 ++++++- > drivers/of/of_pci.c | 20 --------------- > drivers/pci/probe.c | 36 ++++++++++++++++++++++++-- > include/acpi/acpi_bus.h | 36 +++----------------------- > include/linux/acpi.h | 7 +++++- > include/linux/of_pci.h | 3 --- > include/linux/property.h | 10 +++++++- > 12 files changed, 145 insertions(+), 74 deletions(-) I had a couple minor comments. It's sort of a toss-up, but this feels more ACPI-flavored than PCI, so I assume Rafael will take this whole series unless I hear otherwise. Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> -- 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
