man/man9f/ddi_dma_unbind_handle.9f

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 Copyright (c) 1994, Sun Microsystems, Inc.
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 ddi_dma_unbind_handle 9F "26 Sep 1994" "SunOS 5.11" "Kernel Functions for Drivers"
 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

Solaris DDI specific (Solaris 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