LXR linux/drivers/infiniband/hw/mthca/mthca

   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
  39int 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
  62void 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
  69int 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
  77void 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}
  82