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 * $Id: mthca_pd.c 1349 2004-12-16 21:09:43Z roland $
35 */
36
37 #include <linux/errno.h>
38
39 #include "mthca_dev.h"
40
41 int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd)
42 {
43 int err = 0;
44
45 pd->privileged = privileged;
46
47 atomic_set(&pd->sqp_count, 0);
48 pd->pd_num = mthca_alloc(&dev->pd_table.alloc);
49 if (pd->pd_num == -1)
50 return -ENOMEM;
51
52 if (privileged) {
53 err = mthca_mr_alloc_notrans(dev, pd->pd_num,
54 MTHCA_MPT_FLAG_LOCAL_READ |
55 MTHCA_MPT_FLAG_LOCAL_WRITE,
56 &pd->ntmr);
57 if (err)
58 mthca_free(&dev->pd_table.alloc, pd->pd_num);
59 }
60
61 return err;
62 }
63
64 void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd)
65 {
66 if (pd->privileged)
67 mthca_free_mr(dev, &pd->ntmr);
68 mthca_free(&dev->pd_table.alloc, pd->pd_num);
69 }
70
71 int mthca_init_pd_table(struct mthca_dev *dev)
72 {
73 return mthca_alloc_init(&dev->pd_table.alloc,
74 dev->limits.num_pds,
75 (1 << 24) - 1,
76 dev->limits.reserved_pds);
77 }
78
79 void mthca_cleanup_pd_table(struct mthca_dev *dev)
80 {
81 /* XXX check if any PDs are still allocated? */
82 mthca_alloc_cleanup(&dev->pd_table.alloc);
83 }
84
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