79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
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/* $FreeBSD$ */
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/*-
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* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* This file contains various macro functions. */
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#ifndef _USB2_MFUNC_H_
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#define _USB2_MFUNC_H_
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#define USB_LOG2(n) ( \
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((x) <= (1<<0x00)) ? 0x00 : \
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((x) <= (1<<0x01)) ? 0x01 : \
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((x) <= (1<<0x02)) ? 0x02 : \
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((x) <= (1<<0x03)) ? 0x03 : \
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((x) <= (1<<0x04)) ? 0x04 : \
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((x) <= (1<<0x05)) ? 0x05 : \
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((x) <= (1<<0x06)) ? 0x06 : \
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((x) <= (1<<0x07)) ? 0x07 : \
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((x) <= (1<<0x08)) ? 0x08 : \
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((x) <= (1<<0x09)) ? 0x09 : \
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((x) <= (1<<0x0A)) ? 0x0A : \
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((x) <= (1<<0x0B)) ? 0x0B : \
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((x) <= (1<<0x0C)) ? 0x0C : \
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((x) <= (1<<0x0D)) ? 0x0D : \
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((x) <= (1<<0x0E)) ? 0x0E : \
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((x) <= (1<<0x0F)) ? 0x0F : \
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((x) <= (1<<0x10)) ? 0x10 : \
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((x) <= (1<<0x11)) ? 0x11 : \
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((x) <= (1<<0x12)) ? 0x12 : \
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((x) <= (1<<0x13)) ? 0x13 : \
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((x) <= (1<<0x14)) ? 0x14 : \
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((x) <= (1<<0x15)) ? 0x15 : \
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((x) <= (1<<0x16)) ? 0x16 : \
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((x) <= (1<<0x17)) ? 0x17 : \
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((x) <= (1<<0x18)) ? 0x18 : \
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((x) <= (1<<0x19)) ? 0x19 : \
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((x) <= (1<<0x1A)) ? 0x1A : \
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((x) <= (1<<0x1B)) ? 0x1B : \
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((x) <= (1<<0x1C)) ? 0x1C : \
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((x) <= (1<<0x1D)) ? 0x1D : \
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((x) <= (1<<0x1E)) ? 0x1E : \
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0x1F)
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/* helper for converting pointers to integers */
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#define USB_P2U(ptr) \
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(((const uint8_t *)(ptr)) - ((const uint8_t *)0))
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/* helper for computing offsets */
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#define USB_ADD_BYTES(ptr,size) \
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((void *)(USB_P2U(ptr) + (size)))
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/* debug macro */
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#define USB_ASSERT KASSERT
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#endif /* _USB2_MFUNC_H_ */
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