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Copyright (c) 1994, Sun Microsystems, Inc.
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DDI_DMA_UNBIND_HANDLE 9F "Sep 26, 1994"
NAME
ddi_dma_unbind_handle - unbinds the address in a DMA handle
SYNOPSIS
#include <sys/ddi.h>
#include <sys/sunddi.h>



int ddi_dma_unbind_handle(ddi_dma_handle_t handle);
PARAMETERS
handle

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

INTERFACE LEVEL
illumos DDI specific (illumos DDI).
DESCRIPTION
ddi_dma_unbind_handle() frees all DMA resources associated with an existing DMA handle. When a DMA transfer completes, the driver should call ddi_dma_unbind_handle() to free system DMA resources established by a call to ddi_dma_buf_bind_handle(9F) or ddi_dma_addr_bind_handle(9F). ddi_dma_unbind_handle() does an implicit ddi_dma_sync(9F) making further synchronization steps unnecessary.
RETURN VALUES
DDI_SUCCESS

on success

DDI_FAILURE

on failure

CONTEXT
ddi_dma_unbind_handle() 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_free_handle (9F), ddi_dma_sync (9F)

Writing Device Drivers