162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ciconfig AMD_PTDMA 362306a36Sopenharmony_ci tristate "AMD PassThru DMA Engine" 462306a36Sopenharmony_ci depends on X86_64 && PCI 562306a36Sopenharmony_ci select DMA_ENGINE 662306a36Sopenharmony_ci select DMA_VIRTUAL_CHANNELS 762306a36Sopenharmony_ci help 862306a36Sopenharmony_ci Enable support for the AMD PTDMA controller. This controller 962306a36Sopenharmony_ci provides DMA capabilities to perform high bandwidth memory to 1062306a36Sopenharmony_ci memory and IO copy operations. It performs DMA transfer through 1162306a36Sopenharmony_ci queue-based descriptor management. This DMA controller is intended 1262306a36Sopenharmony_ci to be used with AMD Non-Transparent Bridge devices and not for 1362306a36Sopenharmony_ci general purpose peripheral DMA. 14