hw/mthca/mthca_pd.c

0001 /*
0002  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
0003  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
0004  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
0005  *
0006  * This software is available to you under a choice of one of two
0007  * licenses.  You may choose to be licensed under the terms of the GNU
0008  * General Public License (GPL) Version 2, available from the file
0009  * COPYING in the main directory of this source tree, or the
0010  * OpenIB.org BSD license below:
0011  *
0012  *     Redistribution and use in source and binary forms, with or
0013  *     without modification, are permitted provided that the following
0014  *     conditions are met:
0015  *
0016  *      - Redistributions of source code must retain the above
0017  *        copyright notice, this list of conditions and the following
0018  *        disclaimer.
0019  *
0020  *      - Redistributions in binary form must reproduce the above
0021  *        copyright notice, this list of conditions and the following
0022  *        disclaimer in the documentation and/or other materials
0023  *        provided with the distribution.
0024  *
0025  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0026  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0027  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
0028  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
0029  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
0030  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
0031  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
0032  * SOFTWARE.
0033  */
0034
0035 #include <linux/errno.h>
0036
0037 #include "mthca_dev.h"
0038
0039 int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd)
0040 {
0041     int err = 0;
0042
0043     pd->privileged = privileged;
0044
0045     atomic_set(&pd->sqp_count, 0);
0046     pd->pd_num = mthca_alloc(&dev->pd_table.alloc);
0047     if (pd->pd_num == -1)
0048         return -ENOMEM;
0049
0050     if (privileged) {
0051         err = mthca_mr_alloc_notrans(dev, pd->pd_num,
0052                          MTHCA_MPT_FLAG_LOCAL_READ |
0053                          MTHCA_MPT_FLAG_LOCAL_WRITE,
0054                          &pd->ntmr);
0055         if (err)
0056             mthca_free(&dev->pd_table.alloc, pd->pd_num);
0057     }
0058
0059     return err;
0060 }
0061
0062 void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd)
0063 {
0064     if (pd->privileged)
0065         mthca_free_mr(dev, &pd->ntmr);
0066     mthca_free(&dev->pd_table.alloc, pd->pd_num);
0067 }
0068
0069 int mthca_init_pd_table(struct mthca_dev *dev)
0070 {
0071     return mthca_alloc_init(&dev->pd_table.alloc,
0072                 dev->limits.num_pds,
0073                 (1 << 24) - 1,
0074                 dev->limits.reserved_pds);
0075 }
0076
0077 void mthca_cleanup_pd_table(struct mthca_dev *dev)
0078 {
0079     /* XXX check if any PDs are still allocated? */
0080     mthca_alloc_cleanup(&dev->pd_table.alloc);
0081 }