# SPDX-License-Identifier: GPL-2.0-only# config AMD_AE4DMA	tristate  "AMD AE4DMA Engine"	depends on (X86_64 || COMPILE_TEST) && PCI	depends on AMD_PTDMA	select DMA_ENGINE	select DMA_VIRTUAL_CHANNELS	help	  Enable support for the AMD AE4DMA controller. This controller	  provides DMA capabilities to perform high bandwidth memory to	  memory and IO copy operations. It performs DMA transfer through	  queue-based descriptor management. This DMA controller is intended	  to be used with AMD Non-Transparent Bridge devices and not for	  general purpose peripheral DMA. config AMD_PTDMA	tristate  "AMD PassThru DMA Engine"	depends on X86_64 && PCI	select DMA_ENGINE	select DMA_VIRTUAL_CHANNELS	help	  Enable support for the AMD PTDMA controller. This controller	  provides DMA capabilities to perform high bandwidth memory to	  memory and IO copy operations. It performs DMA transfer through	  queue-based descriptor management. This DMA controller is intended	  to be used with AMD Non-Transparent Bridge devices and not for	  general purpose peripheral DMA. config AMD_QDMA	tristate "AMD Queue-based DMA"	depends on HAS_IOMEM	select DMA_ENGINE	select DMA_VIRTUAL_CHANNELS	select REGMAP_MMIO	help	  Enable support for the AMD Queue-based DMA subsystem. 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 either the	  Host to Card (H2C) direction or the Card to Host (C2H) direction.