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1 | /* |
2 | * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. | |
3 | * Copyright (c) 2005 Mellanox Technologies. All rights reserved. | |
4 | * | |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the | |
9 | * OpenIB.org BSD license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * - Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
32 | */ | |
33 | ||
34 | #include <linux/init.h> | |
35 | #include <linux/errno.h> | |
36 | ||
37 | #include <asm/page.h> | |
38 | ||
39 | #include "mlx4.h" | |
40 | #include "icm.h" | |
41 | ||
42 | int mlx4_pd_alloc(struct mlx4_dev *dev, u32 *pdn) | |
43 | { | |
44 | struct mlx4_priv *priv = mlx4_priv(dev); | |
45 | ||
46 | *pdn = mlx4_bitmap_alloc(&priv->pd_bitmap); | |
47 | if (*pdn == -1) | |
48 | return -ENOMEM; | |
49 | ||
50 | return 0; | |
51 | } | |
52 | EXPORT_SYMBOL_GPL(mlx4_pd_alloc); | |
53 | ||
54 | void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn) | |
55 | { | |
56 | mlx4_bitmap_free(&mlx4_priv(dev)->pd_bitmap, pdn); | |
57 | } | |
58 | EXPORT_SYMBOL_GPL(mlx4_pd_free); | |
59 | ||
3d73c288 | 60 | int mlx4_init_pd_table(struct mlx4_dev *dev) |
225c7b1f RD |
61 | { |
62 | struct mlx4_priv *priv = mlx4_priv(dev); | |
63 | ||
64 | return mlx4_bitmap_init(&priv->pd_bitmap, dev->caps.num_pds, | |
65 | (1 << 24) - 1, dev->caps.reserved_pds); | |
66 | } | |
67 | ||
68 | void mlx4_cleanup_pd_table(struct mlx4_dev *dev) | |
69 | { | |
70 | mlx4_bitmap_cleanup(&mlx4_priv(dev)->pd_bitmap); | |
71 | } | |
72 | ||
73 | ||
74 | int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar) | |
75 | { | |
76 | uar->index = mlx4_bitmap_alloc(&mlx4_priv(dev)->uar_table.bitmap); | |
77 | if (uar->index == -1) | |
78 | return -ENOMEM; | |
79 | ||
80 | uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index; | |
81 | ||
82 | return 0; | |
83 | } | |
84 | EXPORT_SYMBOL_GPL(mlx4_uar_alloc); | |
85 | ||
86 | void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar) | |
87 | { | |
88 | mlx4_bitmap_free(&mlx4_priv(dev)->uar_table.bitmap, uar->index); | |
89 | } | |
90 | EXPORT_SYMBOL_GPL(mlx4_uar_free); | |
91 | ||
92 | int mlx4_init_uar_table(struct mlx4_dev *dev) | |
93 | { | |
94 | return mlx4_bitmap_init(&mlx4_priv(dev)->uar_table.bitmap, | |
95 | dev->caps.num_uars, dev->caps.num_uars - 1, | |
96 | max(128, dev->caps.reserved_uars)); | |
97 | } | |
98 | ||
99 | void mlx4_cleanup_uar_table(struct mlx4_dev *dev) | |
100 | { | |
101 | mlx4_bitmap_cleanup(&mlx4_priv(dev)->uar_table.bitmap); | |
102 | } |