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1da177e4 LT |
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. | |
1da177e4 LT |
31 | */ |
32 | ||
4e57b681 TS |
33 | #include <asm/page.h> /* PAGE_SHIFT */ |
34 | ||
1da177e4 LT |
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, | |
9fd558f4 | 61 | dev->limits.reserved_uars + 1); |
1da177e4 LT |
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 | } |