| // SPDX-License-Identifier: GPL-2.0 | |
| #include <linux/dma-mapping.h> | |
| #include <linux/swiotlb.h> | |
| #include <linux/export.h> | |
| /* Set this to 1 if there is a HW IOMMU in the system */ | |
| int iommu_detected __read_mostly; | |
| const struct dma_map_ops *dma_ops; | |
| EXPORT_SYMBOL(dma_ops); | |
| const struct dma_map_ops *dma_get_ops(struct device *dev) | |
| { | |
| return dma_ops; | |
| } | |
| EXPORT_SYMBOL(dma_get_ops); | |
| #ifdef CONFIG_SWIOTLB | |
| void __init swiotlb_dma_init(void) | |
| { | |
| dma_ops = &swiotlb_dma_ops; | |
| swiotlb_init(1); | |
| } | |
| #endif |