mthca_pd.c

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    1 /*
    2  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
    3  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
    4  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
    5  *
    6  * This software is available to you under a choice of one of two
    7  * licenses.  You may choose to be licensed under the terms of the GNU
    8  * General Public License (GPL) Version 2, available from the file
    9  * COPYING in the main directory of this source tree, or the
   10  * OpenIB.org BSD license below:
   11  *
   12  *     Redistribution and use in source and binary forms, with or
   13  *     without modification, are permitted provided that the following
   14  *     conditions are met:
   15  *
   16  *      - Redistributions of source code must retain the above
   17  *        copyright notice, this list of conditions and the following
   18  *        disclaimer.
   19  *
   20  *      - Redistributions in binary form must reproduce the above
   21  *        copyright notice, this list of conditions and the following
   22  *        disclaimer in the documentation and/or other materials
   23  *        provided with the distribution.
   24  *
   25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
   29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   32  * SOFTWARE.
   33  */
   34 
   35 #include <linux/errno.h>
   36 
   37 #include "mthca_dev.h"
   38 
   39 int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd)
   40 {
   41         int err = 0;
   42 
   43         pd->privileged = privileged;
   44 
   45         atomic_set(&pd->sqp_count, 0);
   46         pd->pd_num = mthca_alloc(&dev->pd_table.alloc);
   47         if (pd->pd_num == -1)
   48                 return -ENOMEM;
   49 
   50         if (privileged) {
   51                 err = mthca_mr_alloc_notrans(dev, pd->pd_num,
   52                                              MTHCA_MPT_FLAG_LOCAL_READ |
   53                                              MTHCA_MPT_FLAG_LOCAL_WRITE,
   54                                              &pd->ntmr);
   55                 if (err)
   56                         mthca_free(&dev->pd_table.alloc, pd->pd_num);
   57         }
   58 
   59         return err;
   60 }
   61 
   62 void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd)
   63 {
   64         if (pd->privileged)
   65                 mthca_free_mr(dev, &pd->ntmr);
   66         mthca_free(&dev->pd_table.alloc, pd->pd_num);
   67 }
   68 
   69 int mthca_init_pd_table(struct mthca_dev *dev)
   70 {
   71         return mthca_alloc_init(&dev->pd_table.alloc,
   72                                 dev->limits.num_pds,
   73                                 (1 << 24) - 1,
   74                                 dev->limits.reserved_pds);
   75 }
   76 
   77 void mthca_cleanup_pd_table(struct mthca_dev *dev)
   78 {
   79         /* XXX check if any PDs are still allocated? */
   80         mthca_alloc_cleanup(&dev->pd_table.alloc);
   81 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/mthca/mthca_pd.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mthca/mthca_pd.c