1 # SPDX-License-Identifier: GPL-2.0-only 2 config AMD_PTDMA 3 tristate "AMD PassThru DMA Engine" 4 depends on X86_64 && PCI 5 select DMA_ENGINE 6 select DMA_VIRTUAL_CHANNELS 7 help 8 Enable support for the AMD PTDMA controller. This controller 9 provides DMA capabilities to perform high bandwidth memory to 10 memory and IO copy operations. It performs DMA transfer through 11 queue-based descriptor management. This DMA controller is intended 12 to be used with AMD Non-Transparent Bridge devices and not for 13 general purpose peripheral DMA. 14