1#include <linux/dma-mapping.h> 2#include <linux/export.h> 3 4/* Set this to 1 if there is a HW IOMMU in the system */ 5int iommu_detected __read_mostly; 6 7const struct dma_map_ops *dma_ops; 8EXPORT_SYMBOL(dma_ops); 9 10#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16) 11 12static int __init dma_init(void) 13{ 14 dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES); 15 16 return 0; 17} 18fs_initcall(dma_init); 19 20const struct dma_map_ops *dma_get_ops(struct device *dev) 21{ 22 return dma_ops; 23} 24EXPORT_SYMBOL(dma_get_ops); 25