Enables DMA for the specified handle.
#include <sys/dma.h>
int d_map_enable(*handle)
struct d_handle *handle;
Item | Description |
---|---|
handle | Indicates the unique handle returned by d_map_init. |
The d_map_enable kernel service is a bus-specific utility routine determined by the d_map_init kernel service that enables DMA for the specified handle with respect to the platform.
Item | Description |
---|---|
DMA_SUCC | Indicates the DMA is successfully enabled. |
DMA_FAIL | Indicates the DMA could not be explicitly enabled for this device or bus. |