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_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 illumos DDI specific (illumos 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