1/*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc.  All rights reserved.
3 * Copyright (c) 2007 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 "mlx4.h"
38
39int mlx4_xrcd_alloc(struct mlx4_dev *dev, u32 *xrcdn)
40{
41	struct mlx4_priv *priv = mlx4_priv(dev);
42
43	*xrcdn = mlx4_bitmap_alloc(&priv->xrcd_bitmap);
44	if (*xrcdn == -1)
45		return -ENOMEM;
46
47	return 0;
48}
49EXPORT_SYMBOL_GPL(mlx4_xrcd_alloc);
50
51void mlx4_xrcd_free(struct mlx4_dev *dev, u32 xrcdn)
52{
53	mlx4_bitmap_free(&mlx4_priv(dev)->xrcd_bitmap, xrcdn);
54}
55EXPORT_SYMBOL_GPL(mlx4_xrcd_free);
56
57int __devinit mlx4_init_xrcd_table(struct mlx4_dev *dev)
58{
59	struct mlx4_priv *priv = mlx4_priv(dev);
60
61	return mlx4_bitmap_init(&priv->xrcd_bitmap, (1 << 16),
62				(1 << 16) - 1, dev->caps.reserved_xrcds + 1, 0);
63}
64
65void mlx4_cleanup_xrcd_table(struct mlx4_dev *dev)
66{
67	mlx4_bitmap_cleanup(&mlx4_priv(dev)->xrcd_bitmap);
68}
69
70
71