ddi_dma_numwin man page on SunOS

ddi_dma_numwin man page on SunOS

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ddi_dma_numwin(9F)	 Kernel Functions for Drivers	    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  num‐
		       ber 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  win‐
			       dows.

       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

SunOS 5.10			  29 Sep 1994		    ddi_dma_numwin(9F)

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