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