ddi_dma_free man page on SunOS

ddi_dma_free man page on SunOS

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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       This  interface	is  obsolete.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_set‐
       up(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 ker‐
       nel 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 5.10			  16 Jan 2006		      ddi_dma_free(9F)

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