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SubjectRe: [PATCH 0/9] 8250: AMD Carrizo UART PL300 DMA enablement
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On Fri, Dec 4, 2015 at 5:24 AM, Wang Hongcheng <annie.wang@amd.com> 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
>
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--
With Best Regards,
Andy Shevchenko


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