| # 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. |