diff options
Diffstat (limited to 'drivers/ieee1394/dma.h')
| -rw-r--r-- | drivers/ieee1394/dma.h | 22 |
1 files changed, 5 insertions, 17 deletions
diff --git a/drivers/ieee1394/dma.h b/drivers/ieee1394/dma.h index a1682aba71c7..2727bcd24194 100644 --- a/drivers/ieee1394/dma.h +++ b/drivers/ieee1394/dma.h @@ -66,35 +66,23 @@ struct dma_region { int direction; }; -/* clear out all fields but do not allocate anything */ void dma_region_init(struct dma_region *dma); - -/* allocate the buffer and map it to the IOMMU */ int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes, struct pci_dev *dev, int direction); - -/* unmap and free the buffer */ void dma_region_free(struct dma_region *dma); - -/* sync the CPU's view of the buffer */ void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset, unsigned long len); - -/* sync the IO bus' view of the buffer */ void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset, unsigned long len); - -/* map the buffer into a user space process */ int dma_region_mmap(struct dma_region *dma, struct file *file, struct vm_area_struct *vma); +dma_addr_t dma_region_offset_to_bus(struct dma_region *dma, + unsigned long offset); -/* macro to index into a DMA region (or dma_prog_region) */ +/** + * dma_region_i - macro to index into a DMA region (or dma_prog_region) + */ #define dma_region_i(_dma, _type, _index) \ ( ((_type*) ((_dma)->kvirt)) + (_index) ) -/* return the DMA bus address of the byte with the given offset - * relative to the beginning of the dma_region */ -dma_addr_t dma_region_offset_to_bus(struct dma_region *dma, - unsigned long offset); - #endif /* IEEE1394_DMA_H */ |