tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 * $Id$
33 */
34
35#include <asm/page.h> /* PAGE_SHIFT */
36
37#include "mthca_dev.h"
38#include "mthca_memfree.h"
39
40int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar)
41{
42 uar->index = mthca_alloc(&dev->uar_table.alloc);
43 if (uar->index == -1)
44 return -ENOMEM;
45
46 uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index;
47
48 return 0;
49}
50
51void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar)
52{
53 mthca_free(&dev->uar_table.alloc, uar->index);
54}
55
56int mthca_init_uar_table(struct mthca_dev *dev)
57{
58 int ret;
59
60 ret = mthca_alloc_init(&dev->uar_table.alloc,
61 dev->limits.num_uars,
62 dev->limits.num_uars - 1,
63 dev->limits.reserved_uars + 1);
64 if (ret)
65 return ret;
66
67 ret = mthca_init_db_tab(dev);
68 if (ret)
69 mthca_alloc_cleanup(&dev->uar_table.alloc);
70
71 return ret;
72}
73
74void mthca_cleanup_uar_table(struct mthca_dev *dev)
75{
76 mthca_cleanup_db_tab(dev);
77
78 /* XXX check if any UARs are still allocated? */
79 mthca_alloc_cleanup(&dev->uar_table.alloc);
80}