Hi Cai On Thu, Feb 16, 2023 at 10:08:56AM +0800, Cai Huoqing wrote: > On 13 2月 23 21:24:05, Cai Huoqing wrote: > > From: Cai huoqing <cai.huoqing@xxxxxxxxx> > > > > 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 The series has landed in my inbox. I'll give you some comments shortly today or tomorrow. -Serge(y) > > 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 > >
