hw/qib/qib_user_sdma.h

0001 /*
0002  * Copyright (c) 2007, 2008 QLogic Corporation. All rights reserved.
0003  *
0004  * This software is available to you under a choice of one of two
0005  * licenses.  You may choose to be licensed under the terms of the GNU
0006  * General Public License (GPL) Version 2, available from the file
0007  * COPYING in the main directory of this source tree, or the
0008  * OpenIB.org BSD license below:
0009  *
0010  *     Redistribution and use in source and binary forms, with or
0011  *     without modification, are permitted provided that the following
0012  *     conditions are met:
0013  *
0014  *      - Redistributions of source code must retain the above
0015  *        copyright notice, this list of conditions and the following
0016  *        disclaimer.
0017  *
0018  *      - Redistributions in binary form must reproduce the above
0019  *        copyright notice, this list of conditions and the following
0020  *        disclaimer in the documentation and/or other materials
0021  *        provided with the distribution.
0022  *
0023  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0024  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0025  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
0026  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
0027  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
0028  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
0029  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
0030  * SOFTWARE.
0031  */
0032 #include <linux/device.h>
0033
0034 struct qib_user_sdma_queue;
0035
0036 struct qib_user_sdma_queue *
0037 qib_user_sdma_queue_create(struct device *dev, int unit, int port, int sport);
0038 void qib_user_sdma_queue_destroy(struct qib_user_sdma_queue *pq);
0039
0040 int qib_user_sdma_writev(struct qib_ctxtdata *pd,
0041              struct qib_user_sdma_queue *pq,
0042              const struct iovec *iov,
0043              unsigned long dim);
0044
0045 int qib_user_sdma_make_progress(struct qib_pportdata *ppd,
0046                 struct qib_user_sdma_queue *pq);
0047
0048 void qib_user_sdma_queue_drain(struct qib_pportdata *ppd,
0049                    struct qib_user_sdma_queue *pq);
0050
0051 u32 qib_user_sdma_complete_counter(const struct qib_user_sdma_queue *pq);
0052 u32 qib_user_sdma_inflight_counter(struct qib_user_sdma_queue *pq);