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 <asm/page.h>		/* PAGE_SHIFT */
34
35#include "mthca_dev.h"
36#include "mthca_memfree.h"
37
38int 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
49void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar)
50{
51	mthca_free(&dev->uar_table.alloc, uar->index);
52}
53
54int 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,
61			       dev->limits.reserved_uars + 1);
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
72void 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}
79