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Diffstat (limited to 'sys/contrib/octeon-sdk/cvmx-swap.h')
-rw-r--r-- | sys/contrib/octeon-sdk/cvmx-swap.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/sys/contrib/octeon-sdk/cvmx-swap.h b/sys/contrib/octeon-sdk/cvmx-swap.h new file mode 100644 index 0000000..2678fd6 --- /dev/null +++ b/sys/contrib/octeon-sdk/cvmx-swap.h @@ -0,0 +1,141 @@ +/***********************license start*************** + * Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights + * reserved. + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * 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. + * + * * Neither the name of Cavium Networks nor the names of + * its contributors may be used to endorse or promote products + * derived from this software without specific prior written + * permission. + * + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" + * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS + * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH + * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY + * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT + * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES + * OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR + * PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET + * POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT + * OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU. + * + * + * For any questions regarding licensing please contact marketing@caviumnetworks.com + * + ***********************license end**************************************/ + + + + + + +/** + * @file + * + * Utility functions for endian swapping + * + * <hr>$Revision: 32636 $<hr> + */ + +#ifndef __CVMX_SWAP_H__ +#define __CVMX_SWAP_H__ + +#ifdef __cplusplus +extern "C" { +#endif + + +/** + * Byte swap a 16 bit number + * + * @param x 16 bit number + * @return Byte swapped result + */ +static inline uint16_t cvmx_swap16(uint16_t x) +{ + return ((uint16_t)((((uint16_t)(x) & (uint16_t)0x00ffU) << 8) | + (((uint16_t)(x) & (uint16_t)0xff00U) >> 8) )); +} + + +/** + * Byte swap a 32 bit number + * + * @param x 32 bit number + * @return Byte swapped result + */ +static inline uint32_t cvmx_swap32(uint32_t x) +{ + return ((uint32_t)((((uint32_t)(x) & (uint32_t)0x000000ffUL) << 24) | + (((uint32_t)(x) & (uint32_t)0x0000ff00UL) << 8) | + (((uint32_t)(x) & (uint32_t)0x00ff0000UL) >> 8) | + (((uint32_t)(x) & (uint32_t)0xff000000UL) >> 24) )); +} + + +/** + * Byte swap a 64 bit number + * + * @param x 64 bit number + * @return Byte swapped result + */ +static inline uint64_t cvmx_swap64(uint64_t x) +{ + return ((x >> 56) | + (((x >> 48) & 0xfful) << 8) | + (((x >> 40) & 0xfful) << 16) | + (((x >> 32) & 0xfful) << 24) | + (((x >> 24) & 0xfful) << 32) | + (((x >> 16) & 0xfful) << 40) | + (((x >> 8) & 0xfful) << 48) | + (((x >> 0) & 0xfful) << 56)); +} + + +#if __BYTE_ORDER == __BIG_ENDIAN + +#define cvmx_cpu_to_le16(x) cvmx_swap16(x) +#define cvmx_cpu_to_le32(x) cvmx_swap32(x) +#define cvmx_cpu_to_le64(x) cvmx_swap64(x) + +#define cvmx_cpu_to_be16(x) (x) +#define cvmx_cpu_to_be32(x) (x) +#define cvmx_cpu_to_be64(x) (x) + +#else + +#define cvmx_cpu_to_le16(x) (x) +#define cvmx_cpu_to_le32(x) (x) +#define cvmx_cpu_to_le64(x) (x) + +#define cvmx_cpu_to_be16(x) cvmx_swap16(x) +#define cvmx_cpu_to_be32(x) cvmx_swap32(x) +#define cvmx_cpu_to_be64(x) cvmx_swap64(x) + +#endif + +#define cvmx_le16_to_cpu(x) cvmx_cpu_to_le16(x) +#define cvmx_le32_to_cpu(x) cvmx_cpu_to_le32(x) +#define cvmx_le64_to_cpu(x) cvmx_cpu_to_le64(x) + +#define cvmx_be16_to_cpu(x) cvmx_cpu_to_be16(x) +#define cvmx_be32_to_cpu(x) cvmx_cpu_to_be32(x) +#define cvmx_be64_to_cpu(x) cvmx_cpu_to_be64(x) + +#ifdef __cplusplus +} +#endif + +#endif /* __CVMX_SWAP_H__ */ |