| Marek Szyprowski | 4ce63fc | 2012-05-16 15:48:21 +0200 | [diff] [blame] | 1 | #ifndef ASMARM_DMA_IOMMU_H |
| 2 | #define ASMARM_DMA_IOMMU_H |
| 3 | |
| 4 | #ifdef __KERNEL__ |
| 5 | |
| 6 | #include <linux/mm_types.h> |
| 7 | #include <linux/scatterlist.h> |
| 8 | #include <linux/dma-debug.h> |
| 9 | #include <linux/kmemcheck.h> |
| Laurent Pinchart | 3e3a182 | 2012-12-16 13:32:03 +0100 | [diff] [blame] | 10 | #include <linux/kref.h> |
| Marek Szyprowski | 4ce63fc | 2012-05-16 15:48:21 +0200 | [diff] [blame] | 11 | |
| 12 | struct dma_iommu_mapping { |
| 13 | /* iommu specific data */ |
| 14 | struct iommu_domain *domain; |
| 15 | |
| 16 | void *bitmap; |
| 17 | size_t bits; |
| 18 | unsigned int order; |
| 19 | dma_addr_t base; |
| 20 | |
| 21 | spinlock_t lock; |
| 22 | struct kref kref; |
| 23 | }; |
| 24 | |
| 25 | struct dma_iommu_mapping * |
| 26 | arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, size_t size, |
| 27 | int order); |
| 28 | |
| 29 | void arm_iommu_release_mapping(struct dma_iommu_mapping *mapping); |
| 30 | |
| 31 | int arm_iommu_attach_device(struct device *dev, |
| 32 | struct dma_iommu_mapping *mapping); |
| Hiroshi Doyu | 6fe3675 | 2013-01-24 15:16:57 +0200 | [diff] [blame] | 33 | void arm_iommu_detach_device(struct device *dev); |
| Marek Szyprowski | 4ce63fc | 2012-05-16 15:48:21 +0200 | [diff] [blame] | 34 | |
| 35 | #endif /* __KERNEL__ */ |
| 36 | #endif |