drivers/infiniband/hw/mthca/mthca_pd.c

   1 /*
   2  * Copyright (c) 2004 Topspin Communications.  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  * $Id: mthca_pd.c 1349 2004-12-16 21:09:43Z roland $
  33  */
  34
  35 #include <linux/init.h>
  36 #include <linux/errno.h>
  37
  38 #include "mthca_dev.h"
  39
  40 int mthca_pd_alloc(struct mthca_dev *dev, struct mthca_pd *pd)
  41 {
  42         int err;
  43
  44         might_sleep();
  45
  46         atomic_set(&pd->sqp_count, 0);
  47         pd->pd_num = mthca_alloc(&dev->pd_table.alloc);
  48         if (pd->pd_num == -1)
  49                 return -ENOMEM;
  50
  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         return err;
  59 }
  60
  61 void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd)
  62 {
  63         might_sleep();
  64         mthca_free_mr(dev, &pd->ntmr);
  65         mthca_free(&dev->pd_table.alloc, pd->pd_num);
  66 }
  67
  68 int __devinit mthca_init_pd_table(struct mthca_dev *dev)
  69 {
  70         return mthca_alloc_init(&dev->pd_table.alloc,
  71                                 dev->limits.num_pds,
  72                                 (1 << 24) - 1,
  73                                 dev->limits.reserved_pds);
  74 }
  75
  76 void __devexit mthca_cleanup_pd_table(struct mthca_dev *dev)
  77 {
  78         /* XXX check if any PDs are still allocated? */
  79         mthca_alloc_cleanup(&dev->pd_table.alloc);
  80 }