SPARC64 arch need the ability to pass DMA attributes when mapping
pages. DMA performance will be low if specific attributes such as
DMA_ATTR_WEAK_ORDERING are not used.
Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@xxxxxxxxxx>
---
include/asm-generic/dma-mapping-common.h | 32 +++++++++++++++++++++++------
1 files changed, 25 insertions(+), 7 deletions(-)
diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h
index b1bc954..b816ed7 100644
--- a/include/asm-generic/dma-mapping-common.h
+++ b/include/asm-generic/dma-mapping-common.h
@@ -74,32 +74,50 @@ static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *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)
+static inline dma_addr_t dma_map_page_attrs(struct device *dev,
+ struct page *page,
+ size_t offset, 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(page_address(page) + offset, size);
BUG_ON(!valid_dma_direction(dir));
- addr = ops->map_page(dev, page, offset, size, dir, NULL);
+ addr = ops->map_page(dev, page, offset, size, dir, attrs);
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)
+static inline void dma_unmap_page_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, NULL);
+ ops->unmap_page(dev, addr, size, dir, attrs);
debug_dma_unmap_page(dev, addr, size, dir, false);
}
+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)
+{
+ return dma_map_page_attrs(dev, page, offset, size, dir, NULL);
+}
+
+static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
+ size_t size, enum dma_data_direction dir)
+{
+ return dma_unmap_page_attrs(dev, addr, size, dir, NULL);
+}
+
static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
size_t size,
enum dma_data_direction dir)
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-doc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
