1 /*
2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/module.h>
18 #include "mt76.h"
19
__mt76_poll(struct mt76_dev * dev,u32 offset,u32 mask,u32 val,int timeout)20 bool __mt76_poll(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
21 int timeout)
22 {
23 u32 cur;
24
25 timeout /= 10;
26 do {
27 cur = dev->bus->rr(dev, offset) & mask;
28 if (cur == val)
29 return true;
30
31 udelay(10);
32 } while (timeout-- > 0);
33
34 return false;
35 }
36 EXPORT_SYMBOL_GPL(__mt76_poll);
37
__mt76_poll_msec(struct mt76_dev * dev,u32 offset,u32 mask,u32 val,int timeout)38 bool __mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
39 int timeout)
40 {
41 u32 cur;
42
43 timeout /= 10;
44 do {
45 cur = dev->bus->rr(dev, offset) & mask;
46 if (cur == val)
47 return true;
48
49 usleep_range(10000, 20000);
50 } while (timeout-- > 0);
51
52 return false;
53 }
54 EXPORT_SYMBOL_GPL(__mt76_poll_msec);
55
mt76_wcid_alloc(unsigned long * mask,int size)56 int mt76_wcid_alloc(unsigned long *mask, int size)
57 {
58 int i, idx = 0, cur;
59
60 for (i = 0; i < size / BITS_PER_LONG; i++) {
61 idx = ffs(~mask[i]);
62 if (!idx)
63 continue;
64
65 idx--;
66 cur = i * BITS_PER_LONG + idx;
67 if (cur >= size)
68 break;
69
70 mask[i] |= BIT(idx);
71 return cur;
72 }
73
74 return -1;
75 }
76 EXPORT_SYMBOL_GPL(mt76_wcid_alloc);
77
78 MODULE_LICENSE("Dual BSD/GPL");
79
