| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | #include <linux/dma-mapping.h> |
| 3 | #include <linux/swiotlb.h> |
| 4 | #include <linux/export.h> |
| 5 | |
| 6 | /* Set this to 1 if there is a HW IOMMU in the system */ |
| 7 | int iommu_detected __read_mostly; |
| 8 | |
| 9 | const struct dma_map_ops *dma_ops; |
| 10 | EXPORT_SYMBOL(dma_ops); |
| 11 | |
| 12 | const struct dma_map_ops *dma_get_ops(struct device *dev) |
| 13 | { |
| 14 | return dma_ops; |
| 15 | } |
| 16 | EXPORT_SYMBOL(dma_get_ops); |
| 17 | |
| 18 | #ifdef CONFIG_SWIOTLB |
| 19 | void __init swiotlb_dma_init(void) |
| 20 | { |
| 21 | dma_ops = &swiotlb_dma_ops; |
| 22 | swiotlb_init(1); |
| 23 | } |
| 24 | #endif |