* can regain ownership by calling dma_unmap_page() or
* dma_sync_single_for_cpu().
*/
+#ifndef CONFIG_DMABOUNCE
static inline dma_addr_t
dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir)
{
- return dma_map_single(dev, page_address(page) + offset, size, dir);
+ if (!arch_is_coherent())
+ dma_cache_maint(page_address(page) + offset, size, dir);
+
+ return page_to_dma(dev, page) + offset;
}
+#else
+extern dma_addr_t dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir);
+#endif
/**
* dma_unmap_single - unmap a single buffer previously mapped