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 
40 int 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 
61 void 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 
68 int __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 
76 void __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 }
81