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    SubjectRe: [PATCH v3 0/4] dmaengine: dw-edma: Add support for native HDMA
    On 13 2月 23 21:24:05, Cai Huoqing wrote:
    > From: Cai huoqing <cai.huoqing@linux.dev>
    >
    > Add support for HDMA NATIVE, as long the IP design has set
    > the compatible register map parameter-HDMA_NATIVE,
    > which allows compatibility for native HDMA register configuration.
    >
    > The HDMA Hyper-DMA IP is an enhancement of the eDMA embedded-DMA IP.
    > And the native HDMA registers are different from eDMA,
    > so this patch add support for HDMA NATIVE mode.
    >
    > HDMA write and read channels operate independently to maximize
    > the performance of the HDMA read and write data transfer over
    > the link When you configure the HDMA with multiple read channels,
    > then it uses a round robin (RR) arbitration scheme to select
    > the next read channel to be serviced.
    > The same applies when you have multiple write channels.
    >
    > The native HDMA driver also supports a maximum of 16 independent
    > channels (8 write + 8 read), which can run simultaneously.
    > Both SAR (Source Address Register) and DAR (Destination Address Register)
    > are alignmented to byte.dmaengine: dw-edma: Add support for native HDMA
    >
    > Cai huoqing (4):
    > dmaengine: dw-edma: Rename dw_edma_core_ops structure to
    > dw_edma_plat_ops
    > dmaengine: dw-edma: Create a new dw_edma_core_ops structure to
    > abstract controller operation
    > dmaengine: dw-edma: Add support for native HDMA
    > dmaengine: dw-edma: Add HDMA DebugFS support
    >
    > v2->v3:
    > [1/4]
    > 1.Add more commit log to explain why use dw_edma_plat_ops.
    > 2.Update the structure name in the DW PCIe driver.
    > [2/4]
    > 3.Use the reverse xmas tree vars definition order.
    > 4.Add edma core ops wrapper.
    > 5.Add dw_edma_done_interrupt() and dw_edma_abort_interrupt()
    > global methods.
    > 6.Fix some indentation.
    > 7.Fix some typo
    > 8.Make use off dw_edma_core prefix instead of dw_xdma_core_.
    > [3/4]
    > 9.Remove unnecessary include: dw-edma-v0-regs.h and dw-edma-v0-regs.h
    > 10.HDMA supports the LL descriptors placed on the CPU memory.
    > [4/4]
    > 11.Split DebugFS to be a separate patch.
    > 12.Refactor HDMA DebugFS like the series in @Bjorn tree.
    >
    > v2 link:
    > https://lore.kernel.org/lkml/20220925173412.u2ez6rbmfc5fupdn@mobilestation/
    Hi Sergey,

    Could you please give some comments for this patch v3

    Thanks,
    Cai
    >
    > drivers/dma/dw-edma/Makefile | 8 +-
    > drivers/dma/dw-edma/dw-edma-core.c | 63 ++--
    > drivers/dma/dw-edma/dw-edma-core.h | 92 ++++++
    > drivers/dma/dw-edma/dw-edma-pcie.c | 4 +-
    > drivers/dma/dw-edma/dw-edma-v0-core.c | 88 ++++-
    > drivers/dma/dw-edma/dw-edma-v0-core.h | 14 +-
    > drivers/dma/dw-edma/dw-hdma-v0-core.c | 317 +++++++++++++++++++
    > drivers/dma/dw-edma/dw-hdma-v0-core.h | 17 +
    > drivers/dma/dw-edma/dw-hdma-v0-debugfs.c | 175 ++++++++++
    > drivers/dma/dw-edma/dw-hdma-v0-debugfs.h | 22 ++
    > drivers/dma/dw-edma/dw-hdma-v0-regs.h | 129 ++++++++
    > drivers/pci/controller/dwc/pcie-designware.c | 2 +-
    > include/linux/dma/edma.h | 7 +-
    > 13 files changed, 860 insertions(+), 78 deletions(-)
    > create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-core.c
    > create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-core.h
    > create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-debugfs.c
    > create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-debugfs.h
    > create mode 100644 drivers/dma/dw-edma/dw-hdma-v0-regs.h
    >
    > --
    > 2.34.1
    >

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