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 }