1 /*
2 * Copyright (c) 2005 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
33 #include <asm/page.h> /* PAGE_SHIFT */
34
35 #include "mthca_dev.h"
36 #include "mthca_memfree.h"
37
38 int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar)
39 {
40 uar->index = mthca_alloc(&dev->uar_table.alloc);
41 if (uar->index == -1)
42 return -ENOMEM;
43
44 uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index;
45
46 return 0;
47 }
48
49 void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar)
50 {
51 mthca_free(&dev->uar_table.alloc, uar->index);
52 }
53
54 int mthca_init_uar_table(struct mthca_dev *dev)
55 {
56 int ret;
57
58 ret = mthca_alloc_init(&dev->uar_table.alloc,
59 dev->limits.num_uars,
60 dev->limits.num_uars - 1,
61 dev->limits.reserved_uars + 1);
62 if (ret)
63 return ret;
64
65 ret = mthca_init_db_tab(dev);
66 if (ret)
67 mthca_alloc_cleanup(&dev->uar_table.alloc);
68
69 return ret;
70 }
71
72 void mthca_cleanup_uar_table(struct mthca_dev *dev)
73 {
74 mthca_cleanup_db_tab(dev);
75
76 /* XXX check if any UARs are still allocated? */
77 mthca_alloc_cleanup(&dev->uar_table.alloc);
78 }