On 21 2月 23 11:46:51, Cai Huoqing wrote:
> 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
> youhave 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 aligned to byte.
Just ping this patch v4
Thanks,
Cai-
>
> 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
>
> v3->v4:
> [1/4]
> 1.Update the structure name dw_edma_plat_ops in commit log
> 2.Fix code stytle.
> [2/4]
> 3.Refactor dw_edma_interrupt() and related callbacks to
> make the code more readable, the calls hierarchy like this:
>
> irq: dw_edma_interrupt_{write,read}()
> +-> dw_edma_core_handle_int() (dw-edma-v0-core.c)
> +-> dw_edma_v0_core_status_done_int() (dw-edma-v0-core.c)
> +-> dw_edma_v0_core_clear_done_int() (dw-edma-v0-core.c)
> +-> dw_edma_done_interrupt() (dw-edma-core.c)
> +-> dw_edma_v0_core_status_abort_int() (dw-edma-v0-core.c)
> +-> dw_edma_v0_core_clear_abort_int() (dw-edma-v0-core.c)
> +-> dw_edma_abort_interrupt() (dw-edma-core.c)
> 4.Use the dw_edma_v0_core name for the dw_edma_core_ops structure instance.
> [3/4]
> 5.Fix weird indentation of control1, func_num, etc.
> 6.Include 'linux/io-64-nonatomic-lo-hi.h' to fix warning.
> 7.Refactor dw_edma_core_handle_int related callback in dw_hdma_v0_core ops.
> [4/4]
> 8.Add field watermark_en, func_num, qos, msi_watermark,etc.
> 9.Make variables reverse xmas tree order.
> 10.Declare const for 'struct dw_hdma_debugfs_entry'
>
> v3 link:
> https://lore.kernel.org/lkml/20230213132411.65524-1-cai.huoqing@xxxxxxxxx/
>
> drivers/dma/dw-edma/Makefile | 8 +-
> drivers/dma/dw-edma/dw-edma-core.c | 77 ++---
> drivers/dma/dw-edma/dw-edma-core.h | 56 ++++
> drivers/dma/dw-edma/dw-edma-pcie.c | 4 +-
> drivers/dma/dw-edma/dw-edma-v0-core.c | 73 ++++-
> drivers/dma/dw-edma/dw-edma-v0-core.h | 14 +-
> drivers/dma/dw-edma/dw-hdma-v0-core.c | 302 +++++++++++++++++++
> drivers/dma/dw-edma/dw-hdma-v0-core.h | 17 ++
> drivers/dma/dw-edma/dw-hdma-v0-debugfs.c | 181 +++++++++++
> 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, 807 insertions(+), 85 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
>
