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Diffstat (limited to 'drivers/net/wireless/bcmdhd.1.28.23.x.cn_ap6476/include/bcmendian.h')
| -rwxr-xr-x | drivers/net/wireless/bcmdhd.1.28.23.x.cn_ap6476/include/bcmendian.h | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcmdhd.1.28.23.x.cn_ap6476/include/bcmendian.h b/drivers/net/wireless/bcmdhd.1.28.23.x.cn_ap6476/include/bcmendian.h new file mode 100755 index 00000000..0cf91454 --- /dev/null +++ b/drivers/net/wireless/bcmdhd.1.28.23.x.cn_ap6476/include/bcmendian.h @@ -0,0 +1,299 @@ +/* + * Byte order utilities + * + * Copyright (C) 1999-2012, Broadcom Corporation + * + * Unless you and Broadcom execute a separate written software license + * agreement governing use of this software, this software is licensed to you + * under the terms of the GNU General Public License version 2 (the "GPL"), + * available at http://www.broadcom.com/licenses/GPLv2.php, with the + * following added to such license: + * + * As a special exception, the copyright holders of this software give you + * permission to link this software with independent modules, and to copy and + * distribute the resulting executable under terms of your choice, provided that + * you also meet, for each linked independent module, the terms and conditions of + * the license of that module. An independent module is a module which is not + * derived from this software. The special exception does not apply to any + * modifications of the software. + * + * Notwithstanding the above, under no circumstances may you combine this + * software in any way with any other Broadcom software provided under a license + * other than the GPL, without Broadcom's express prior written consent. + * + * $Id: bcmendian.h 241182 2011-02-17 21:50:03Z $ + * + * This file by default provides proper behavior on little-endian architectures. + * On big-endian architectures, IL_BIGENDIAN should be defined. + */ + +#ifndef _BCMENDIAN_H_ +#define _BCMENDIAN_H_ + +#include <typedefs.h> + +/* Reverse the bytes in a 16-bit value */ +#define BCMSWAP16(val) \ + ((uint16)((((uint16)(val) & (uint16)0x00ffU) << 8) | \ + (((uint16)(val) & (uint16)0xff00U) >> 8))) + +/* Reverse the bytes in a 32-bit value */ +#define BCMSWAP32(val) \ + ((uint32)((((uint32)(val) & (uint32)0x000000ffU) << 24) | \ + (((uint32)(val) & (uint32)0x0000ff00U) << 8) | \ + (((uint32)(val) & (uint32)0x00ff0000U) >> 8) | \ + (((uint32)(val) & (uint32)0xff000000U) >> 24))) + +/* Reverse the two 16-bit halves of a 32-bit value */ +#define BCMSWAP32BY16(val) \ + ((uint32)((((uint32)(val) & (uint32)0x0000ffffU) << 16) | \ + (((uint32)(val) & (uint32)0xffff0000U) >> 16))) + +/* Byte swapping macros + * Host <=> Network (Big Endian) for 16- and 32-bit values + * Host <=> Little-Endian for 16- and 32-bit values + */ +#ifndef hton16 +#define HTON16(i) BCMSWAP16(i) +#define hton16(i) bcmswap16(i) +#define HTON32(i) BCMSWAP32(i) +#define hton32(i) bcmswap32(i) +#define NTOH16(i) BCMSWAP16(i) +#define ntoh16(i) bcmswap16(i) +#define NTOH32(i) BCMSWAP32(i) +#define ntoh32(i) bcmswap32(i) +#define LTOH16(i) (i) +#define ltoh16(i) (i) +#define LTOH32(i) (i) +#define ltoh32(i) (i) +#define HTOL16(i) (i) +#define htol16(i) (i) +#define HTOL32(i) (i) +#define htol32(i) (i) +#endif /* hton16 */ + +#define ltoh16_buf(buf, i) +#define htol16_buf(buf, i) + +/* Unaligned loads and stores in host byte order */ +#define load32_ua(a) ltoh32_ua(a) +#define store32_ua(a, v) htol32_ua_store(v, a) +#define load16_ua(a) ltoh16_ua(a) +#define store16_ua(a, v) htol16_ua_store(v, a) + +#define _LTOH16_UA(cp) ((cp)[0] | ((cp)[1] << 8)) +#define _LTOH32_UA(cp) ((cp)[0] | ((cp)[1] << 8) | ((cp)[2] << 16) | ((cp)[3] << 24)) +#define _NTOH16_UA(cp) (((cp)[0] << 8) | (cp)[1]) +#define _NTOH32_UA(cp) (((cp)[0] << 24) | ((cp)[1] << 16) | ((cp)[2] << 8) | (cp)[3]) + +#define ltoh_ua(ptr) \ + (sizeof(*(ptr)) == sizeof(uint8) ? *(const uint8 *)(ptr) : \ + sizeof(*(ptr)) == sizeof(uint16) ? _LTOH16_UA((const uint8 *)(ptr)) : \ + sizeof(*(ptr)) == sizeof(uint32) ? _LTOH32_UA((const uint8 *)(ptr)) : \ + *(uint8 *)0) + +#define ntoh_ua(ptr) \ + (sizeof(*(ptr)) == sizeof(uint8) ? *(const uint8 *)(ptr) : \ + sizeof(*(ptr)) == sizeof(uint16) ? _NTOH16_UA((const uint8 *)(ptr)) : \ + sizeof(*(ptr)) == sizeof(uint32) ? _NTOH32_UA((const uint8 *)(ptr)) : \ + *(uint8 *)0) + +#ifdef __GNUC__ + +/* GNU macro versions avoid referencing the argument multiple times, while also + * avoiding the -fno-inline used in ROM builds. + */ + +#define bcmswap16(val) ({ \ + uint16 _val = (val); \ + BCMSWAP16(_val); \ +}) + +#define bcmswap32(val) ({ \ + uint32 _val = (val); \ + BCMSWAP32(_val); \ +}) + +#define bcmswap32by16(val) ({ \ + uint32 _val = (val); \ + BCMSWAP32BY16(_val); \ +}) + +#define bcmswap16_buf(buf, len) ({ \ + uint16 *_buf = (uint16 *)(buf); \ + uint _wds = (len) / 2; \ + while (_wds--) { \ + *_buf = bcmswap16(*_buf); \ + _buf++; \ + } \ +}) + +#define htol16_ua_store(val, bytes) ({ \ + uint16 _val = (val); \ + uint8 *_bytes = (uint8 *)(bytes); \ + _bytes[0] = _val & 0xff; \ + _bytes[1] = _val >> 8; \ +}) + +#define htol32_ua_store(val, bytes) ({ \ + uint32 _val = (val); \ + uint8 *_bytes = (uint8 *)(bytes); \ + _bytes[0] = _val & 0xff; \ + _bytes[1] = (_val >> 8) & 0xff; \ + _bytes[2] = (_val >> 16) & 0xff; \ + _bytes[3] = _val >> 24; \ +}) + +#define hton16_ua_store(val, bytes) ({ \ + uint16 _val = (val); \ + uint8 *_bytes = (uint8 *)(bytes); \ + _bytes[0] = _val >> 8; \ + _bytes[1] = _val & 0xff; \ +}) + +#define hton32_ua_store(val, bytes) ({ \ + uint32 _val = (val); \ + uint8 *_bytes = (uint8 *)(bytes); \ + _bytes[0] = _val >> 24; \ + _bytes[1] = (_val >> 16) & 0xff; \ + _bytes[2] = (_val >> 8) & 0xff; \ + _bytes[3] = _val & 0xff; \ +}) + +#define ltoh16_ua(bytes) ({ \ + const uint8 *_bytes = (const uint8 *)(bytes); \ + _LTOH16_UA(_bytes); \ +}) + +#define ltoh32_ua(bytes) ({ \ + const uint8 *_bytes = (const uint8 *)(bytes); \ + _LTOH32_UA(_bytes); \ +}) + +#define ntoh16_ua(bytes) ({ \ + const uint8 *_bytes = (const uint8 *)(bytes); \ + _NTOH16_UA(_bytes); \ +}) + +#define ntoh32_ua(bytes) ({ \ + const uint8 *_bytes = (const uint8 *)(bytes); \ + _NTOH32_UA(_bytes); \ +}) + +#else /* !__GNUC__ */ + +/* Inline versions avoid referencing the argument multiple times */ +static INLINE uint16 +bcmswap16(uint16 val) +{ + return BCMSWAP16(val); +} + +static INLINE uint32 +bcmswap32(uint32 val) +{ + return BCMSWAP32(val); +} + +static INLINE uint32 +bcmswap32by16(uint32 val) +{ + return BCMSWAP32BY16(val); +} + +/* Reverse pairs of bytes in a buffer (not for high-performance use) */ +/* buf - start of buffer of shorts to swap */ +/* len - byte length of buffer */ +static INLINE void +bcmswap16_buf(uint16 *buf, uint len) +{ + len = len / 2; + + while (len--) { + *buf = bcmswap16(*buf); + buf++; + } +} + +/* + * Store 16-bit value to unaligned little-endian byte array. + */ +static INLINE void +htol16_ua_store(uint16 val, uint8 *bytes) +{ + bytes[0] = val & 0xff; + bytes[1] = val >> 8; +} + +/* + * Store 32-bit value to unaligned little-endian byte array. + */ +static INLINE void +htol32_ua_store(uint32 val, uint8 *bytes) +{ + bytes[0] = val & 0xff; + bytes[1] = (val >> 8) & 0xff; + bytes[2] = (val >> 16) & 0xff; + bytes[3] = val >> 24; +} + +/* + * Store 16-bit value to unaligned network-(big-)endian byte array. + */ +static INLINE void +hton16_ua_store(uint16 val, uint8 *bytes) +{ + bytes[0] = val >> 8; + bytes[1] = val & 0xff; +} + +/* + * Store 32-bit value to unaligned network-(big-)endian byte array. + */ +static INLINE void +hton32_ua_store(uint32 val, uint8 *bytes) +{ + bytes[0] = val >> 24; + bytes[1] = (val >> 16) & 0xff; + bytes[2] = (val >> 8) & 0xff; + bytes[3] = val & 0xff; +} + +/* + * Load 16-bit value from unaligned little-endian byte array. + */ +static INLINE uint16 +ltoh16_ua(const void *bytes) +{ + return _LTOH16_UA((const uint8 *)bytes); +} + +/* + * Load 32-bit value from unaligned little-endian byte array. + */ +static INLINE uint32 +ltoh32_ua(const void *bytes) +{ + return _LTOH32_UA((const uint8 *)bytes); +} + +/* + * Load 16-bit value from unaligned big-(network-)endian byte array. + */ +static INLINE uint16 +ntoh16_ua(const void *bytes) +{ + return _NTOH16_UA((const uint8 *)bytes); +} + +/* + * Load 32-bit value from unaligned big-(network-)endian byte array. + */ +static INLINE uint32 +ntoh32_ua(const void *bytes) +{ + return _NTOH32_UA((const uint8 *)bytes); +} + +#endif /* !__GNUC__ */ +#endif /* !_BCMENDIAN_H_ */ |