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 
mthca_pd_alloc(struct mthca_dev * dev,int privileged,struct mthca_pd * pd)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 
mthca_pd_free(struct mthca_dev * dev,struct mthca_pd * pd)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 
mthca_init_pd_table(struct mthca_dev * dev)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 
mthca_cleanup_pd_table(struct mthca_dev * dev)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 }
82