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freebsd/sys/dev/usb/usb_endian.h
Hans Petter Selasky d2b99310b1 Modify the FreeBSD USB kernel code so that it can be compiled directly
into the FreeBSD boot loader, typically for non-USB aware BIOSes, EFI systems
or embedded platforms. This is also useful for out of the system compilation
of the FreeBSD USB stack for various purposes. The USB kernel files can
now optionally include a global header file which should include all needed
definitions required to compile the FreeBSD USB stack. When the global USB
header file is included, no other USB header files will be included by
default.

Add new file containing the USB stack configuration for the
FreeBSD loader build.

Replace some __FBSDID()'s by /* $FreeBSD$ */ comments. Now all
USB files follow the same style.

Use cases:
 - console in loader via USB
 - loading kernel via USB

Discussed with:		Hiroki Sato, hrs @ EuroBSDCon
2013-01-30 15:26:04 +00:00

122 lines
3.5 KiB
C

/* $FreeBSD$ */
/*
* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _USB_ENDIAN_H_
#define _USB_ENDIAN_H_
#ifndef USB_GLOBAL_INCLUDE_FILE
#include <sys/stdint.h>
#include <sys/endian.h>
#endif
/*
* Declare the basic USB record types. USB records have an alignment
* of 1 byte and are always packed.
*/
typedef uint8_t uByte;
typedef uint8_t uWord[2];
typedef uint8_t uDWord[4];
typedef uint8_t uQWord[8];
/*
* Define a set of macros that can get and set data independent of
* CPU endianness and CPU alignment requirements:
*/
#define UGETB(w) \
((w)[0])
#define UGETW(w) \
((w)[0] | \
(((uint16_t)((w)[1])) << 8))
#define UGETDW(w) \
((w)[0] | \
(((uint16_t)((w)[1])) << 8) | \
(((uint32_t)((w)[2])) << 16) | \
(((uint32_t)((w)[3])) << 24))
#define UGETQW(w) \
((w)[0] | \
(((uint16_t)((w)[1])) << 8) | \
(((uint32_t)((w)[2])) << 16) | \
(((uint32_t)((w)[3])) << 24) | \
(((uint64_t)((w)[4])) << 32) | \
(((uint64_t)((w)[5])) << 40) | \
(((uint64_t)((w)[6])) << 48) | \
(((uint64_t)((w)[7])) << 56))
#define USETB(w,v) do { \
(w)[0] = (uint8_t)(v); \
} while (0)
#define USETW(w,v) do { \
(w)[0] = (uint8_t)(v); \
(w)[1] = (uint8_t)((v) >> 8); \
} while (0)
#define USETDW(w,v) do { \
(w)[0] = (uint8_t)(v); \
(w)[1] = (uint8_t)((v) >> 8); \
(w)[2] = (uint8_t)((v) >> 16); \
(w)[3] = (uint8_t)((v) >> 24); \
} while (0)
#define USETQW(w,v) do { \
(w)[0] = (uint8_t)(v); \
(w)[1] = (uint8_t)((v) >> 8); \
(w)[2] = (uint8_t)((v) >> 16); \
(w)[3] = (uint8_t)((v) >> 24); \
(w)[4] = (uint8_t)((v) >> 32); \
(w)[5] = (uint8_t)((v) >> 40); \
(w)[6] = (uint8_t)((v) >> 48); \
(w)[7] = (uint8_t)((v) >> 56); \
} while (0)
#define USETW2(w,b1,b0) do { \
(w)[0] = (uint8_t)(b0); \
(w)[1] = (uint8_t)(b1); \
} while (0)
#define USETW4(w,b3,b2,b1,b0) do { \
(w)[0] = (uint8_t)(b0); \
(w)[1] = (uint8_t)(b1); \
(w)[2] = (uint8_t)(b2); \
(w)[3] = (uint8_t)(b3); \
} while (0)
#define USETW8(w,b7,b6,b5,b4,b3,b2,b1,b0) do { \
(w)[0] = (uint8_t)(b0); \
(w)[1] = (uint8_t)(b1); \
(w)[2] = (uint8_t)(b2); \
(w)[3] = (uint8_t)(b3); \
(w)[4] = (uint8_t)(b4); \
(w)[5] = (uint8_t)(b5); \
(w)[6] = (uint8_t)(b6); \
(w)[7] = (uint8_t)(b7); \
} while (0)
#endif /* _USB_ENDIAN_H_ */