ddi_dma_numwin man page on SmartOS

ddi_dma_numwin man page on SmartOS

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DDI_DMA_NUMWIN(9F)					    DDI_DMA_NUMWIN(9F)

NAME
       ddi_dma_numwin - retrieve number of DMA windows

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

       int ddi_dma_numwin(ddi_dma_handle_t handle, uint_t *nwinp);

PARAMETERS
       handle
		  The	 DMA   handle	previously  allocated  by  a  call  to
		  ddi_dma_alloc_handle(9F).

       nwinp
		  Upon a successful return,  nwinp will contain the number  of
		  DMA windows for this object.

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

DESCRIPTION
       ddi_dma_numwin() returns the number of  DMA windows for a DMA object if
       partial resource allocation was permitted.

RETURN VALUES
       ddi_dma_numwin() returns:

       DDI_SUCCESS
		       Successfully filled in the number of  DMA windows.

       DDI_FAILURE
		       DMA windows are not activated.

CONTEXT
       ddi_dma_numwin() can be called from user, kernel, or interrupt context.

SEE ALSO
       ddi_dma_addr_bind_handle(9F),		     ddi_dma_alloc_handle(9F),
       ddi_dma_buf_bind_handle(9F), ddi_dma_unbind_handle(9F)

       Writing Device Drivers

				 Sep 29, 1994		    DDI_DMA_NUMWIN(9F)

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