1 /*
2  * Copyright (c) 2007, 2008 QLogic Corporation. All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  */
32 #include <linux/device.h>
33 
34 struct qib_user_sdma_queue;
35 
36 struct qib_user_sdma_queue *
37 qib_user_sdma_queue_create(struct device *dev, int unit, int port, int sport);
38 void qib_user_sdma_queue_destroy(struct qib_user_sdma_queue *pq);
39 
40 int qib_user_sdma_writev(struct qib_ctxtdata *pd,
41 			 struct qib_user_sdma_queue *pq,
42 			 const struct iovec *iov,
43 			 unsigned long dim);
44 
45 int qib_user_sdma_make_progress(struct qib_pportdata *ppd,
46 				struct qib_user_sdma_queue *pq);
47 
48 void qib_user_sdma_queue_drain(struct qib_pportdata *ppd,
49 			       struct qib_user_sdma_queue *pq);
50 
51 u32 qib_user_sdma_complete_counter(const struct qib_user_sdma_queue *pq);
52 u32 qib_user_sdma_inflight_counter(struct qib_user_sdma_queue *pq);
53