te
Copyright (c) 1994, Sun Microsystems, Inc.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
ddi_dma_unbind_handle - unbinds the address in a DMA handle

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



int ddi_dma_unbind_handle(ddi_dma_handle_t handle);

handle illumos DDI specific (illumos DDI). 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. DDI_SUCCESS DDI_FAILURE ddi_dma_unbind_handle() 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_free_handle(9F), ddi_dma_sync(9F)

Writing Device Drivers