On Fri, Dec 4, 2015 at 5:24 AM, Wang Hongcheng <annie.wang@xxxxxxx> wrote: > Hi all, > > As AMD carrizo UART device is compatible with 8250 and has pl330 DMA > IP, our uart driver is serial:8250 and DMA engines are registered by > driver/dma/pl330. The following patches are made, in order to enable > DMA. > > Firstly, we add an universal ACPI amba glue layer to create an amba > device based on ACPI table. Then we alter 8250/Kconfig to support > AMD 8250 device and add quirk for AMD specific request. > Secondly, since pl330 driver only provides dma engine for platform > devices, we add an acpi dma engine interface. > Then we add a new port type for AMD carrizo and set UART registers > and dma rx size as hardware requirement. > In the end, we make our IOMMU driver to support non-pci device, so > UART DMA really works. > I commented on a few patches, thoughI might miss something in the rest. Include me in Cc list next version. > Thanks, > Hongcheng > > Huang Rui (1): > ACPI: Add support for AMBA bus type > > Wan Zongshun (2): > Documentation: Add ivrs_acpihid kernel parameter description > iommu/amd: Add ACPI HID named devices IOMMU driver support > > Wang Hongcheng (6): > 8250/Kconfig: add config option CONFIG_SERIAL_8250_AMD > ACPI: add struct acpi_amba_quirk for AMD pl330 specific device config > dmaengine: pl330: add new items for pl330 private data > dmaengine: pl330: provide ACPI dmaengine interface > dmaengine:pl330: set segment_boundary_mask = 0cffffffff > Serial:8250: New Port Type PORT_AMD_8250 > > Documentation/kernel-parameters.txt | 7 ++ > drivers/acpi/Makefile | 1 + > drivers/acpi/acpi_amba.c | 180 ++++++++++++++++++++++++++++++++++++ > drivers/acpi/acpi_apd.c | 89 +++++++++++++++--- > drivers/dma/pl330.c | 61 ++++++++++-- > drivers/iommu/amd_iommu.c | 165 +++++++++++++++++++++++++++++---- > drivers/iommu/amd_iommu_init.c | 123 +++++++++++++++++++++++- > drivers/iommu/amd_iommu_types.h | 11 +++ > drivers/tty/serial/8250/8250_dw.c | 16 ++++ > drivers/tty/serial/8250/8250_port.c | 9 ++ > drivers/tty/serial/8250/Kconfig | 8 ++ > include/linux/acpi.h | 30 ++++++ > include/linux/amba/pl330.h | 4 + > include/linux/serial_8250.h | 4 + > include/uapi/linux/serial_core.h | 3 +- > include/uapi/linux/serial_reg.h | 2 + > 16 files changed, 673 insertions(+), 40 deletions(-) > create mode 100644 drivers/acpi/acpi_amba.c > > -- > 1.9.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- With Best Regards, Andy Shevchenko -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
