d_map_enable Kernel Service
Purpose
Enables DMA for the specified handle.
Syntax
#include <sys/dma.h>int d_map_enable(*handle)
struct d_handle *handle;Parameters
| Item | Description |
|---|---|
| handle | Indicates the unique handle returned by d_map_init. |
Description
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.
Note: You can use the D_MAP_ENABLE macro
provided in the /usr/include/sys/dma.h file to code calls to
the d_map_enable kernel service.
Return Values
| 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. |