Modified: trunk/arch/blackfin/include/asm/dma-mapping.h (8462 => 8463)
--- trunk/arch/blackfin/include/asm/dma-mapping.h 2010-03-13 07:29:22 UTC (rev 8462)
+++ trunk/arch/blackfin/include/asm/dma-mapping.h 2010-03-13 21:25:06 UTC (rev 8463)
@@ -68,13 +68,6 @@
__dma_sync(addr, size, dir);
}
-/*
- * Map a single buffer of the indicated size for DMA in streaming mode.
- * The 32-bit bus address to use is returned.
- *
- * Once the device is given the dma address, the device owns this memory
- * until either pci_unmap_single or pci_dma_sync_single is performed.
- */
static inline dma_addr_t
dma_map_single(struct device *dev, void *ptr, size_t size,
enum dma_data_direction dir)
@@ -91,14 +84,6 @@
return dma_map_single(dev, page_address(page) + offset, size, dir);
}
-/*
- * Unmap a single streaming mode DMA translation. The dma_addr and size
- * must match what was provided for in a previous pci_map_single call. All
- * other usages are undefined.
- *
- * After this call, reads by the cpu to the buffer are guarenteed to see
- * whatever the device wrote there.
- */
static inline void
dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
enum dma_data_direction dir)
@@ -113,30 +98,9 @@
dma_unmap_single(dev, dma_addr, size, dir);
}
-/*
- * Map a set of buffers described by scatterlist in streaming
- * mode for DMA. This is the scather-gather version of the
- * above pci_map_single interface. Here the scatter gather list
- * elements are each tagged with the appropriate dma address
- * and length. They are obtained via sg_dma_{address,length}(SG).
- *
- * NOTE: An implementation may be able to use a smaller number of
- * DMA address/length pairs than there are SG table elements.
- * (for example via virtual mapping capabilities)
- * The routine returns the number of addr/length pairs actually
- * used, at most nents.
- *
- * Device ownership issues as mentioned above for pci_map_single are
- * the same here.
- */
extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
enum dma_data_direction dir);
-/*
- * Unmap a set of streaming mode DMA translations.
- * Again, cpu read rules concerning calls here are the same as for
- * pci_unmap_single() above.
- */
static inline void
dma_unmap_sg(struct device *dev, struct scatterlist *sg,
int nhwentries, enum dma_data_direction dir)
