diff options
| -rw-r--r-- | include/linux/dma-mapping.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index df3a3610caf0..332030709623 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -75,6 +75,21 @@ static inline unsigned int dma_set_max_seg_size(struct device *dev, return -EIO; } +static inline unsigned long dma_get_seg_boundary(struct device *dev) +{ + return dev->dma_parms ? + dev->dma_parms->segment_boundary_mask : 0xffffffff; +} + +static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask) +{ + if (dev->dma_parms) { + dev->dma_parms->segment_boundary_mask = mask; + return 0; + } else + return -EIO; +} + /* flags for the coherent memory api */ #define DMA_MEMORY_MAP 0x01 #define DMA_MEMORY_IO 0x02 |