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