2 * Copyright (c) 2016 Adrian Chadd <adrian@FreeBSD.org>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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9 * notice, this list of conditions and the following disclaimer,
10 * without modification.
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12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 * redistribution must be conditioned upon including a substantially
14 * similar Disclaimer requirement for further binary redistribution.
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24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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31 #ifndef __IF_BWN_UTIL_H__
32 #define __IF_BWN_UTIL_H__
34 /* Hamming weight; used in the PHY routines */
36 bwn_hweight32(uint32_t val)
39 /* yes, could do it without a loop.. */
40 for (i = 0; i < 32; i++) {
47 /* Clamp value; PHY code */
49 bwn_clamp_val(int val, int lo, int hi)
58 /* Q52 format - used in PHY routines */
59 #define INT_TO_Q52(i) ((i) << 2)
60 #define Q52_TO_INT(q52) ((q52) >> 2)
61 #define Q52_FMT "%u.%u"
62 #define Q52_ARG(q52) Q52_TO_INT(q52), ((((q52) & 0x3) * 100) / 4)
64 extern unsigned int bwn_sqrt(struct bwn_mac *mac, unsigned int x);
66 #endif /* __IF_BWN_UTIL_H__ */