Query: ddi_dma_numwin
OS: opensolaris
Section: 9f
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
ddi_dma_numwin(9F) Kernel Functions for Drivers ddi_dma_numwin(9F)NAMEddi_dma_numwin - retrieve number of DMA windowsSYNOPSIS#include <sys/ddi.h> #include <sys/sunddi.h> int ddi_dma_numwin(ddi_dma_handle_t handle, uint_t *nwinp);PARAMETERShandle 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 LEVELSolaris DDI specific (Solaris DDI).DESCRIPTIONddi_dma_numwin() returns the number of DMA windows for a DMA object if partial resource allocation was permitted.RETURN VALUESddi_dma_numwin() returns: DDI_SUCCESS Successfully filled in the number of DMA windows. DDI_FAILURE DMA windows are not activated.CONTEXTddi_dma_numwin() can be called from user, kernel, or interrupt context.SEE ALSOddi_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 5.11 29 Sep 1994 ddi_dma_numwin(9F)
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