1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_CRC64_H 3 #define _LINUX_CRC64_H 4 5 #include <linux/types.h> 6 7 /** 8 * crc64_be - Calculate bitwise big-endian ECMA-182 CRC64 9 * @crc: seed value for computation. 0 or (u64)~0 for a new CRC calculation, 10 * or the previous crc64 value if computing incrementally. 11 * @p: pointer to buffer over which CRC64 is run 12 * @len: length of buffer @p 13 */ 14 u64 crc64_be(u64 crc, const void *p, size_t len); 15 16 /** 17 * crc64_nvme - Calculate CRC64-NVME 18 * @crc: seed value for computation. 0 for a new CRC calculation, or the 19 * previous crc64 value if computing incrementally. 20 * @p: pointer to buffer over which CRC64 is run 21 * @len: length of buffer @p 22 * 23 * This computes the CRC64 defined in the NVME NVM Command Set Specification, 24 * *including the bitwise inversion at the beginning and end*. 25 */ 26 u64 crc64_nvme(u64 crc, const void *p, size_t len); 27 28 #endif /* _LINUX_CRC64_H */ 29