- 追加された行はこの色です。
- 削除された行はこの色です。
*参照元 [#v732ecb1]
#backlinks
*説明 [#r09cae57]
-パス: [[linux-2.6.33/]]
-FIXME: これは何?
--説明
**引数 [#obf9545b]
-struct device *dev
--
--[[linux-2.6.33/device]]
-dma_addr_t handle
--
--[[linux-2.6.33/dma_addr_t]]
-unsigned long offset
--
-size_t size
--
-enum dma_data_direction dir
--
--[[linux-2.6.33/dma_data_direction]]
**返り値 [#x800cdde]
-なし
**参考 [#d28e78b9]
*実装 [#nccced0f]
/**
* dma_sync_single_range_for_cpu
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
* @handle: DMA address of buffer
* @offset: offset of region to start sync
* @size: size of region to sync
* @dir: DMA transfer direction (same as passed to dma_map_single)
*
* Make physical memory consistent for a single streaming mode DMA
* translation after a transfer.
*
* If you perform a dma_map_single() but wish to interrogate the
* buffer using the cpu, yet do not wish to teardown the PCI dma
* mapping, you must call this function before doing so. At the
* next point you give the PCI dma address back to the card, you
* must first the perform a dma_sync_for_device, and then the
* device again owns the buffer.
*/
static inline void dma_sync_single_range_for_cpu(struct device *dev,
dma_addr_t handle, unsigned long offset, size_t size,
enum dma_data_direction dir)
{
BUG_ON(!valid_dma_direction(dir));
-
--[[linux-2.6.33/valid_dma_direction()]]
-
--[[linux-2.6.33/BUG_ON()]]
dmabounce_sync_for_cpu(dev, handle, offset, size, dir);
-
--[[linux-2.6.33/dmabounce_sync_for_cpu()]]
}
*コメント [#d81cda36]