drivers/infiniband/hw/ipath/ipath_user_sdma.h

   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 ipath_user_sdma_queue;
  35
  36 struct ipath_user_sdma_queue *
  37 ipath_user_sdma_queue_create(struct device *dev, int unit, int port, int sport);
  38 void ipath_user_sdma_queue_destroy(struct ipath_user_sdma_queue *pq);
  39
  40 int ipath_user_sdma_writev(struct ipath_devdata *dd,
  41                            struct ipath_user_sdma_queue *pq,
  42                            const struct iovec *iov,
  43                            unsigned long dim);
  44
  45 int ipath_user_sdma_make_progress(struct ipath_devdata *dd,
  46                                   struct ipath_user_sdma_queue *pq);
  47
  48 void ipath_user_sdma_queue_drain(struct ipath_devdata *dd,
  49                                  struct ipath_user_sdma_queue *pq);
  50
  51 u32 ipath_user_sdma_complete_counter(const struct ipath_user_sdma_queue *pq);
  52 u32 ipath_user_sdma_inflight_counter(struct ipath_user_sdma_queue *pq);