On 2015/10/29 0:00, Rafael J. Wysocki wrote: > On Wednesday, October 28, 2015 09:54:23 PM Hanjun Guo wrote: >> Hi Rafael, >> >> On 10/27/2015 11:27 PM, Rafael J. Wysocki wrote: >>> On Tuesday, October 27, 2015 09:52:50 AM Bjorn Helgaas wrote: >>>> 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. >>> I'll do that. >> If Suravee address the comments and send another version, >> an it be merged into 4.4? > Well, it is likely, but not guaranteed. > > We're only a few days from the beginning of the merge window and I'm still > in Seoul. No problem, it's up to you :), thanks for the quick response. Hanjun -- 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
