#ifndef _ASM_GENERIC_DMA_MAPPING_H #define _ASM_GENERIC_DMA_MAPPING_H #include <linux/kmemcheck.h> #include <linux/scatterlist.h> #include <linux/dma-debug.h> #include <linux/dma-attrs.h> static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr, size_t size, enum dma_data_direction dir, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); dma_addr_t addr; kmemcheck_mark_initialized(ptr, size); BUG_ON(!valid_dma_direction(dir)); addr = ops->map_page(dev, virt_to_page(ptr), (unsigned long)ptr & ~PAGE_MASK, size, dir, attrs); debug_dma_map_page(dev, virt_to_page(ptr), (unsigned long)ptr & ~PAGE_MASK, size, dir, addr, true); return addr; } static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->unmap_page) ops->unmap_page(dev, addr, size, dir, attrs); debug_dma_unmap_page(dev, addr, size, dir, true); } static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); int i, ents; struct scatterlist *s; for_each_sg(sg, s, nents, i) kmemcheck_mark_initialized(sg_virt(s), s->length); BUG_ON(!valid_dma_direction(dir)); ents = ops->map_sg(dev, sg, nents, dir, attrs); debug_dma_map_sg(dev, sg, nents, ents, dir); return ents; } static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); debug_dma_unmap_sg(dev, sg, nents, dir); if (ops->unmap_sg) ops->unmap_sg(dev, sg, nents, dir, attrs); } static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, size_t offset, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); dma_addr_t addr; kmemcheck_mark_initialized(page_address(page) + offset, size); BUG_ON(!valid_dma_direction(dir)); addr = ops->map_page(dev, page, offset, size, dir, NULL); debug_dma_map_page(dev, page, offset, size, dir, addr, false); return addr; } static inline void dma_unmap_page(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->unmap_page) ops->unmap_page(dev, addr, size, dir, NULL); debug_dma_unmap_page(dev, addr, size, dir, false); } static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_single_for_cpu) ops->sync_single_for_cpu(dev, addr, size, dir); debug_dma_sync_single_for_cpu(dev, addr, size, dir); } static inline void dma_sync_single_for_device(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_single_for_device) ops->sync_single_for_device(dev, addr, size, dir); debug_dma_sync_single_for_device(dev, addr, size, dir); } static inline void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t addr, unsigned long offset, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_single_range_for_cpu) { ops->sync_single_range_for_cpu(dev, addr, offset, size, dir); debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir); } else dma_sync_single_for_cpu(dev, addr + offset, size, dir); } static inline void dma_sync_single_range_for_device(struct device *dev, dma_addr_t addr, unsigned long offset, size_t size, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_single_range_for_device) { ops->sync_single_range_for_device(dev, addr, offset, size, dir); debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir); } else dma_sync_single_for_device(dev, addr + offset, size, dir); } static inline void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_sg_for_cpu) ops->sync_sg_for_cpu(dev, sg, nelems, dir); debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir); } static inline void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction dir) { struct dma_map_ops *ops = get_dma_ops(dev); BUG_ON(!valid_dma_direction(dir)); if (ops->sync_sg_for_device) ops->sync_sg_for_device(dev, sg, nelems, dir); debug_dma_sync_sg_for_device(dev, sg, nelems, dir); } #define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL) #define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL) #define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL) #define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL) #endif