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Copyright (c) 1994, Sun Microsystems, Inc.
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ddi_dma_numwin - retrieve number of DMA windows

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



int ddi_dma_numwin(ddi_dma_handle_t handle, uint_t *nwinp);

handle nwinp

Solaris DDI specific (Solaris DDI).

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

ddi_dma_numwin() returns: DDI_SUCCESS

DDI_FAILURE

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

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