dma_direct_set_offset
dma_direct_set_offset(data, PHYS_OFFSET, BUS_OFFSET, SZ_256M);
dma_direct_set_offset(&isa_dma_dev, PHYS_OFFSET, BUS_OFFSET, SZ_256M);
int ret = dma_direct_set_offset(dev, KEYSTONE_HIGH_PHYS_START,
dma_direct_set_offset(&ohci_device.dev, PHYS_OFFSET,
ret = dma_direct_set_offset(&pdev->dev, 0, dma_start, size);
dma_direct_set_offset(&pdev->dev, __pa(memory_start),
ret = dma_direct_set_offset(dev, PHYS_OFFSET, 0, SZ_4G);
int dma_direct_set_offset(struct device *dev, phys_addr_t cpu_start,