kernel/linux.git/drivers/dma/Makefile, branch v6.19.11

dmaengine: add driver for Sophgo CV18XX/SG200X dmamux

2025-06-17T05:56:13+00:00

Sophgo CV18XX/SG200X use DW AXI CORE with a multiplexer for remapping its request lines. The multiplexer supports at most 8 request lines. Add driver for Sophgo CV18XX/SG200X DMA multiplexer. Signed-off-by: Inochi Amaoto Tested-by: Alexander Sverdlin Link: https://lore.kernel.org/r/20250611081000.1187374-3-inochiama@gmail.com Signed-off-by: Vinod Koul

dmaengine: Add Arm DMA-350 driver

2025-04-17T15:17:39+00:00

Add an initial driver for the Arm Corelink DMA-350 controller, to support basic mem-to-mem async_tx. The design here leaves room for more fun things like peripheral support and scatter-gather chaining to come in future. Signed-off-by: Robin Murphy Link: https://lore.kernel.org/r/6d7d8efefa935d34977b59a74797ab377528db94.1741780808.git.robin.murphy@arm.com Signed-off-by: Vinod Koul

dmaengine: Move AMD PTDMA driver to amd directory

2024-12-02T17:25:27+00:00

PTDMA driver is the AMD DMA driver, and newer AMD platforms support newer DMA engines. Hence, move the current drivers to the AMD directory. This would also mean that future driver submissions to the AMD DMA driver will also land in the AMD-specific directory. Reviewed-by: Raju Rangoju Signed-off-by: Basavaraj Natikar Link: https://lore.kernel.org/r/20241025095931.726018-2-Basavaraj.Natikar@amd.com Signed-off-by: Vinod Koul

dmaengine: loongson2-apb: Rename the prefix ls2x to loongson2

2024-10-23T05:35:45+00:00

Since commit e06c43231214 ("dmaengine: Loongson1: Add Loongson-1 APB DMA driver"), the Loongson-1 dma controller was added. Unfortunately their naming has not been standardized, as CPUs belonging to the same Loongson family, we expect to standardize the naming for ease of understanding. Signed-off-by: Binbin Zhou Link: https://lore.kernel.org/r/20240924064241.2414629-1-zhoubinbin@loongson.cn Signed-off-by: Vinod Koul

dmaengine: Add dma router for pl08x in LPC32XX SoC

2024-08-29T17:24:11+00:00

LPC32XX connects few of its peripherals to pl08x DMA thru a multiplexer, this driver allows to route a signal request line thru the multiplexer for given peripheral. Signed-off-by: Piotr Wojtaszczyk Link: https://lore.kernel.org/r/20240628152022.274405-1-piotr.wojtaszczyk@timesys.com Signed-off-by: Vinod Koul

dmaengine: Loongson1: Add Loongson-1 APB DMA driver

2024-08-29T17:17:24+00:00

Add APB DMA driver for Loongson-1 SoCs. Reviewed-by: Jiaxun Yang Signed-off-by: Keguang Zhang Link: https://lore.kernel.org/r/20240809-loongson1-dma-v12-2-d9469a4a6b85@gmail.com Signed-off-by: Vinod Koul

dmaengine: amd: qdma: Add AMD QDMA driver

2024-08-28T18:04:13+00:00

Adds driver to enable PCIe board which uses AMD QDMA (the Queue-based Direct Memory Access) subsystem. For example, Xilinx Alveo V70 AI Accelerator devices. https://www.xilinx.com/applications/data-center/v70.html The QDMA subsystem is used in conjunction with the PCI Express IP block to provide high performance data transfer between host memory and the card's DMA subsystem. +-------+ +-------+ +-----------+ PCIe | | | | | | Tx/Rx | | | | AXI | | <=======> | PCIE | <===> | QDMA | <====>| User Logic| | | | | | | +-------+ +-------+ +-----------+ The primary mechanism to transfer data using the QDMA is for the QDMA engine to operate on instructions (descriptors) provided by the host operating system. Using the descriptors, the QDMA can move data in both the Host to Card (H2C) direction, or the Card to Host (C2H) direction. The QDMA provides a per-queue basis option whether DMA traffic goes to an AXI4 memory map (MM) interface or to an AXI4-Stream interface. The hardware detail is provided by https://docs.xilinx.com/r/en-US/pg302-qdma Implements dmaengine APIs to support MM DMA transfers. - probe the available DMA channels - use dma_slave_map for channel lookup - use virtual channel to manage dmaengine tx descriptors - implement device_prep_slave_sg callback to handle host scatter gather list Signed-off-by: Nishad Saraf Signed-off-by: Lizhi Hou Link: https://lore.kernel.org/r/20240819211948.688786-2-lizhi.hou@amd.com Signed-off-by: Vinod Koul

dmaengine: stm32: New directory for STM32 DMA controllers drivers

2024-06-11T18:25:33+00:00

Gather the STM32 DMA controllers under drivers/dma/stm32/ Signed-off-by: Amelie Delaunay Link: https://lore.kernel.org/r/20240531150712.2503554-3-amelie.delaunay@foss.st.com Signed-off-by: Vinod Koul

dmaengine: fsl-edma: add trace event support

2024-05-04T12:30:16+00:00

Implement trace event support to enhance logging functionality for register access and the transfer control descriptor (TCD) context. This will enable more comprehensive monitoring and analysis of system activities Signed-off-by: Frank Li Link: https://lore.kernel.org/r/20240425205947.3436501-1-Frank.Li@nxp.com Signed-off-by: Vinod Koul

dmaengine: ls2x-apb: New driver for the Loongson LS2X APB DMA controller

2023-12-21T16:05:13+00:00

The Loongson LS2X APB DMA controller is available on Loongson-2K chips. It is a single-channel, configurable DMA controller IP core based on the AXI bus, whose main function is to integrate DMA functionality on a chip dedicated to carrying data between memory and peripherals in APB bus (e.g. nand). Signed-off-by: Binbin Zhou Signed-off-by: Yingkun Meng Link: https://lore.kernel.org/r/8df2a0199434fba3535831082966c2442ecf1cae.1702365725.git.zhoubinbin@loongson.cn Signed-off-by: Vinod Koul