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/drivers/infiniband/hw/mthca/mthca_pd.c

https://bitbucket.org/evzijst/gittest
C | 80 lines | 36 code | 10 blank | 34 comment | 3 complexity | af91787bcd0ea111132b1a4b710a08cc MD5 | raw file
 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
40int 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
61void 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
68int __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
76void __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}