| # SPDX-License-Identifier: GPL-2.0-only |
| |
| 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. |
