add dma_mapping_ops for intel-iommu

#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/dma-mapping.h>

#include <linux/intel-iommu.h>

void *

	return 0;

}

EXPORT_SYMBOL_GPL(vtd_dma_mapping_error);

extern int iommu_dma_supported(struct device *dev, u64 mask);

struct dma_mapping_ops vtd_dma_ops = {

	.alloc_coherent		= vtd_alloc_coherent,

	.free_coherent		= vtd_free_coherent,

	.map_single_attrs	= vtd_map_single_attrs,

	.unmap_single_attrs	= vtd_unmap_single_attrs,

	.map_sg_attrs		= vtd_map_sg_attrs,

	.unmap_sg_attrs		= vtd_unmap_sg_attrs,

	.sync_single_for_cpu	= machvec_dma_sync_single,

	.sync_sg_for_cpu	= machvec_dma_sync_sg,

	.sync_single_for_device	= machvec_dma_sync_single,

	.sync_sg_for_device	= machvec_dma_sync_sg,

	.dma_supported_op	= iommu_dma_supported,

	.mapping_error		= vtd_dma_mapping_error,

};