2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
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:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
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.
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
34 #include <linux/init.h>
35 #include <linux/errno.h>
42 int mlx4_pd_alloc(struct mlx4_dev *dev, u32 *pdn)
44 struct mlx4_priv *priv = mlx4_priv(dev);
46 *pdn = mlx4_bitmap_alloc(&priv->pd_bitmap);
52 EXPORT_SYMBOL_GPL(mlx4_pd_alloc);
54 void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn)
56 mlx4_bitmap_free(&mlx4_priv(dev)->pd_bitmap, pdn);
58 EXPORT_SYMBOL_GPL(mlx4_pd_free);
60 int mlx4_init_pd_table(struct mlx4_dev *dev)
62 struct mlx4_priv *priv = mlx4_priv(dev);
64 return mlx4_bitmap_init(&priv->pd_bitmap, dev->caps.num_pds,
65 (1 << 24) - 1, dev->caps.reserved_pds);
68 void mlx4_cleanup_pd_table(struct mlx4_dev *dev)
70 mlx4_bitmap_cleanup(&mlx4_priv(dev)->pd_bitmap);
74 int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar)
76 uar->index = mlx4_bitmap_alloc(&mlx4_priv(dev)->uar_table.bitmap);
80 uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index;
84 EXPORT_SYMBOL_GPL(mlx4_uar_alloc);
86 void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar)
88 mlx4_bitmap_free(&mlx4_priv(dev)->uar_table.bitmap, uar->index);
90 EXPORT_SYMBOL_GPL(mlx4_uar_free);
92 int mlx4_init_uar_table(struct mlx4_dev *dev)
94 if (dev->caps.num_uars <= 128) {
95 mlx4_err(dev, "Only %d UAR pages (need more than 128)\n",
97 mlx4_err(dev, "Increase firmware log2_uar_bar_megabytes?\n");
101 return mlx4_bitmap_init(&mlx4_priv(dev)->uar_table.bitmap,
102 dev->caps.num_uars, dev->caps.num_uars - 1,
103 max(128, dev->caps.reserved_uars));
106 void mlx4_cleanup_uar_table(struct mlx4_dev *dev)
108 mlx4_bitmap_cleanup(&mlx4_priv(dev)->uar_table.bitmap);