1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2004 Topspin Communications. All rights reserved.
3*4882a593Smuzhiyun * Copyright (c) 2005 Cisco Systems. All rights reserved.
4*4882a593Smuzhiyun * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * This software is available to you under a choice of one of two
7*4882a593Smuzhiyun * licenses. You may choose to be licensed under the terms of the GNU
8*4882a593Smuzhiyun * General Public License (GPL) Version 2, available from the file
9*4882a593Smuzhiyun * COPYING in the main directory of this source tree, or the
10*4882a593Smuzhiyun * OpenIB.org BSD license below:
11*4882a593Smuzhiyun *
12*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or
13*4882a593Smuzhiyun * without modification, are permitted provided that the following
14*4882a593Smuzhiyun * conditions are met:
15*4882a593Smuzhiyun *
16*4882a593Smuzhiyun * - Redistributions of source code must retain the above
17*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
18*4882a593Smuzhiyun * disclaimer.
19*4882a593Smuzhiyun *
20*4882a593Smuzhiyun * - Redistributions in binary form must reproduce the above
21*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
22*4882a593Smuzhiyun * disclaimer in the documentation and/or other materials
23*4882a593Smuzhiyun * provided with the distribution.
24*4882a593Smuzhiyun *
25*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26*4882a593Smuzhiyun * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27*4882a593Smuzhiyun * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28*4882a593Smuzhiyun * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29*4882a593Smuzhiyun * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30*4882a593Smuzhiyun * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31*4882a593Smuzhiyun * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32*4882a593Smuzhiyun * SOFTWARE.
33*4882a593Smuzhiyun */
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #include <linux/errno.h>
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun #include "mthca_dev.h"
38*4882a593Smuzhiyun
mthca_pd_alloc(struct mthca_dev * dev,int privileged,struct mthca_pd * pd)39*4882a593Smuzhiyun int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun int err = 0;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun pd->privileged = privileged;
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun atomic_set(&pd->sqp_count, 0);
46*4882a593Smuzhiyun pd->pd_num = mthca_alloc(&dev->pd_table.alloc);
47*4882a593Smuzhiyun if (pd->pd_num == -1)
48*4882a593Smuzhiyun return -ENOMEM;
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun if (privileged) {
51*4882a593Smuzhiyun err = mthca_mr_alloc_notrans(dev, pd->pd_num,
52*4882a593Smuzhiyun MTHCA_MPT_FLAG_LOCAL_READ |
53*4882a593Smuzhiyun MTHCA_MPT_FLAG_LOCAL_WRITE,
54*4882a593Smuzhiyun &pd->ntmr);
55*4882a593Smuzhiyun if (err)
56*4882a593Smuzhiyun mthca_free(&dev->pd_table.alloc, pd->pd_num);
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun return err;
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
mthca_pd_free(struct mthca_dev * dev,struct mthca_pd * pd)62*4882a593Smuzhiyun void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd)
63*4882a593Smuzhiyun {
64*4882a593Smuzhiyun if (pd->privileged)
65*4882a593Smuzhiyun mthca_free_mr(dev, &pd->ntmr);
66*4882a593Smuzhiyun mthca_free(&dev->pd_table.alloc, pd->pd_num);
67*4882a593Smuzhiyun }
68*4882a593Smuzhiyun
mthca_init_pd_table(struct mthca_dev * dev)69*4882a593Smuzhiyun int mthca_init_pd_table(struct mthca_dev *dev)
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun return mthca_alloc_init(&dev->pd_table.alloc,
72*4882a593Smuzhiyun dev->limits.num_pds,
73*4882a593Smuzhiyun (1 << 24) - 1,
74*4882a593Smuzhiyun dev->limits.reserved_pds);
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
mthca_cleanup_pd_table(struct mthca_dev * dev)77*4882a593Smuzhiyun void mthca_cleanup_pd_table(struct mthca_dev *dev)
78*4882a593Smuzhiyun {
79*4882a593Smuzhiyun /* XXX check if any PDs are still allocated? */
80*4882a593Smuzhiyun mthca_alloc_cleanup(&dev->pd_table.alloc);
81*4882a593Smuzhiyun }
82