ddi_dma_free(9f) opensolaris man page | unix.com

ddi_dma_free(9F)					   Kernel Functions for Drivers 					  ddi_dma_free(9F)

NAME
       ddi_dma_free - release system DMA resources

SYNOPSIS
       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       int ddi_dma_free(ddi_dma_handle_t handle);

INTERFACE LEVEL
       This interface is obsolete. ddi_dma_free_handle(9F) should be used instead.

PARAMETERS
       handle	 The handle filled in by a call to ddi_dma_setup(9F).

DESCRIPTION
       The  ddi_dma_free()  function  releases	system DMA resources set up by ddi_dma_setup(9F). When a DMA transfer completes, the driver should
       free up system DMA resources established by a call to ddi_dma_setup(9F). This is done by a call to ddi_dma_free(). ddi_dma_free()  does	an
       implicit ddi_dma_sync(9F) for you so any further synchronization steps are not necessary.

RETURN VALUES
       The ddi_dma_free() function returns:

       DDI_SUCCESS    Successfully released resources

       DDI_FAILURE    Failed to free resources

CONTEXT
       The ddi_dma_free() function can be called from user, interrupt, or kernel context.

ATTRIBUTES
       See attributes(5) for a description of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Stability Level 	     |Obsolete			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       attributes(5), ddi_dma_addr_setup(9F), ddi_dma_buf_setup(9F), ddi_dma_free_handle(9F), ddi_dma_htoc(9F), ddi_dma_sync(9F), ddi_dma_req(9S)

       Writing Device Drivers

SunOS 5.11							    16 Jan 2006 						  ddi_dma_free(9F)