-static dma_addr_t arm_nommu_dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction dir,
- unsigned long attrs)
-{
- dma_addr_t handle = page_to_phys(page) + offset;
-
- __dma_page_cpu_to_dev(handle, size, dir);
-
- return handle;
-}
-
-static void arm_nommu_dma_unmap_page(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir,
- unsigned long attrs)
-{
- __dma_page_dev_to_cpu(handle, size, dir);
-}
-
-
-static int arm_nommu_dma_map_sg(struct device *dev, struct scatterlist *sgl,
- int nents, enum dma_data_direction dir,
- unsigned long attrs)
-{
- int i;
- struct scatterlist *sg;
-
- for_each_sg(sgl, sg, nents, i) {
- sg_dma_address(sg) = sg_phys(sg);
- sg_dma_len(sg) = sg->length;
- __dma_page_cpu_to_dev(sg_dma_address(sg), sg_dma_len(sg), dir);
- }
-
- return nents;
-}
-
-static void arm_nommu_dma_unmap_sg(struct device *dev, struct scatterlist *sgl,
- int nents, enum dma_data_direction dir,
- unsigned long attrs)
-{
- struct scatterlist *sg;
- int i;
-
- for_each_sg(sgl, sg, nents, i)
- __dma_page_dev_to_cpu(sg_dma_address(sg), sg_dma_len(sg), dir);
-}
-
-static void arm_nommu_dma_sync_single_for_device(struct device *dev,
- dma_addr_t handle, size_t size, enum dma_data_direction dir)
-{
- __dma_page_cpu_to_dev(handle, size, dir);
-}
-
-static void arm_nommu_dma_sync_single_for_cpu(struct device *dev,
- dma_addr_t handle, size_t size, enum dma_data_direction dir)
-{
- __dma_page_cpu_to_dev(handle, size, dir);
-}
-
-static void arm_nommu_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sgl,
- int nents, enum dma_data_direction dir)
-{
- struct scatterlist *sg;
- int i;
-
- for_each_sg(sgl, sg, nents, i)
- __dma_page_cpu_to_dev(sg_dma_address(sg), sg_dma_len(sg), dir);
-}
-
-static void arm_nommu_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sgl,
- int nents, enum dma_data_direction dir)
-{
- struct scatterlist *sg;
- int i;
-
- for_each_sg(sgl, sg, nents, i)
- __dma_page_dev_to_cpu(sg_dma_address(sg), sg_dma_len(sg), dir);
-}
-
-const struct dma_map_ops arm_nommu_dma_ops = {
- .alloc = arm_nommu_dma_alloc,
- .free = arm_nommu_dma_free,
- .alloc_pages = dma_direct_alloc_pages,
- .free_pages = dma_direct_free_pages,
- .mmap = arm_nommu_dma_mmap,
- .map_page = arm_nommu_dma_map_page,
- .unmap_page = arm_nommu_dma_unmap_page,
- .map_sg = arm_nommu_dma_map_sg,
- .unmap_sg = arm_nommu_dma_unmap_sg,
- .sync_single_for_device = arm_nommu_dma_sync_single_for_device,
- .sync_single_for_cpu = arm_nommu_dma_sync_single_for_cpu,
- .sync_sg_for_device = arm_nommu_dma_sync_sg_for_device,
- .sync_sg_for_cpu = arm_nommu_dma_sync_sg_for_cpu,
-};
-EXPORT_SYMBOL(arm_nommu_dma_ops);
-