1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2005 Topspin Communications. All rights reserved.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * This software is available to you under a choice of one of two
5*4882a593Smuzhiyun * licenses. You may choose to be licensed under the terms of the GNU
6*4882a593Smuzhiyun * General Public License (GPL) Version 2, available from the file
7*4882a593Smuzhiyun * COPYING in the main directory of this source tree, or the
8*4882a593Smuzhiyun * OpenIB.org BSD license below:
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or
11*4882a593Smuzhiyun * without modification, are permitted provided that the following
12*4882a593Smuzhiyun * conditions are met:
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * - Redistributions of source code must retain the above
15*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
16*4882a593Smuzhiyun * disclaimer.
17*4882a593Smuzhiyun *
18*4882a593Smuzhiyun * - Redistributions in binary form must reproduce the above
19*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
20*4882a593Smuzhiyun * disclaimer in the documentation and/or other materials
21*4882a593Smuzhiyun * provided with the distribution.
22*4882a593Smuzhiyun *
23*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24*4882a593Smuzhiyun * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25*4882a593Smuzhiyun * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26*4882a593Smuzhiyun * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27*4882a593Smuzhiyun * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28*4882a593Smuzhiyun * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29*4882a593Smuzhiyun * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30*4882a593Smuzhiyun * SOFTWARE.
31*4882a593Smuzhiyun */
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun #include <asm/page.h> /* PAGE_SHIFT */
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #include "mthca_dev.h"
36*4882a593Smuzhiyun #include "mthca_memfree.h"
37*4882a593Smuzhiyun
mthca_uar_alloc(struct mthca_dev * dev,struct mthca_uar * uar)38*4882a593Smuzhiyun int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun uar->index = mthca_alloc(&dev->uar_table.alloc);
41*4882a593Smuzhiyun if (uar->index == -1)
42*4882a593Smuzhiyun return -ENOMEM;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index;
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun return 0;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
mthca_uar_free(struct mthca_dev * dev,struct mthca_uar * uar)49*4882a593Smuzhiyun void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun mthca_free(&dev->uar_table.alloc, uar->index);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun
mthca_init_uar_table(struct mthca_dev * dev)54*4882a593Smuzhiyun int mthca_init_uar_table(struct mthca_dev *dev)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun int ret;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun ret = mthca_alloc_init(&dev->uar_table.alloc,
59*4882a593Smuzhiyun dev->limits.num_uars,
60*4882a593Smuzhiyun dev->limits.num_uars - 1,
61*4882a593Smuzhiyun dev->limits.reserved_uars + 1);
62*4882a593Smuzhiyun if (ret)
63*4882a593Smuzhiyun return ret;
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun ret = mthca_init_db_tab(dev);
66*4882a593Smuzhiyun if (ret)
67*4882a593Smuzhiyun mthca_alloc_cleanup(&dev->uar_table.alloc);
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun return ret;
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun
mthca_cleanup_uar_table(struct mthca_dev * dev)72*4882a593Smuzhiyun void mthca_cleanup_uar_table(struct mthca_dev *dev)
73*4882a593Smuzhiyun {
74*4882a593Smuzhiyun mthca_cleanup_db_tab(dev);
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun /* XXX check if any UARs are still allocated? */
77*4882a593Smuzhiyun mthca_alloc_cleanup(&dev->uar_table.alloc);
78*4882a593Smuzhiyun }
79