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Diffstat (limited to 'include/zfs_fletcher.h')
| -rw-r--r-- | include/zfs_fletcher.h | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/include/zfs_fletcher.h b/include/zfs_fletcher.h deleted file mode 100644 index f3a620a7c7e2..000000000000 --- a/include/zfs_fletcher.h +++ /dev/null @@ -1,165 +0,0 @@ -// SPDX-License-Identifier: CDDL-1.0 -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or https://opensource.org/licenses/CDDL-1.0. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ -/* - * Copyright 2009 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ -/* - * Copyright 2013 Saso Kiselkov. All rights reserved. - */ - -#ifndef _ZFS_FLETCHER_H -#define _ZFS_FLETCHER_H extern __attribute__((visibility("default"))) - -#include <sys/types.h> -#include <sys/spa_checksum.h> - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * fletcher checksum functions - * - * Note: Fletcher checksum methods expect buffer size to be 4B aligned. This - * limitation stems from the algorithm design. Performing incremental checksum - * without said alignment would yield different results. Therefore, the code - * includes assertions for the size alignment. - * For compatibility, it is required that some code paths calculate checksum of - * non-aligned buffer sizes. For this purpose, `fletcher_4_native_varsize()` - * checksum method is added. This method will ignore last (size % 4) bytes of - * the data buffer. - */ -_ZFS_FLETCHER_H void fletcher_init(zio_cksum_t *); -_ZFS_FLETCHER_H void fletcher_2_native(const void *, uint64_t, const void *, - zio_cksum_t *); -_ZFS_FLETCHER_H void fletcher_2_byteswap(const void *, uint64_t, const void *, - zio_cksum_t *); -_ZFS_FLETCHER_H void fletcher_4_native(const void *, uint64_t, const void *, - zio_cksum_t *); -_ZFS_FLETCHER_H int fletcher_2_incremental_native(void *, size_t, void *); -_ZFS_FLETCHER_H int fletcher_2_incremental_byteswap(void *, size_t, void *); -_ZFS_FLETCHER_H void fletcher_4_native_varsize(const void *, uint64_t, - zio_cksum_t *); -_ZFS_FLETCHER_H void fletcher_4_byteswap(const void *, uint64_t, const void *, - zio_cksum_t *); -_ZFS_FLETCHER_H int fletcher_4_incremental_native(void *, size_t, void *); -_ZFS_FLETCHER_H int fletcher_4_incremental_byteswap(void *, size_t, void *); -_ZFS_FLETCHER_H int fletcher_4_impl_set(const char *selector); -_ZFS_FLETCHER_H void fletcher_4_init(void); -_ZFS_FLETCHER_H void fletcher_4_fini(void); - - - -/* Internal fletcher ctx */ - -typedef struct zfs_fletcher_superscalar { - uint64_t v[4]; -} zfs_fletcher_superscalar_t; - -typedef struct zfs_fletcher_sse { - uint64_t v[2]; -} zfs_fletcher_sse_t; - -typedef struct zfs_fletcher_avx { - uint64_t v[4]; -} zfs_fletcher_avx_t; - -typedef struct zfs_fletcher_avx512 { - uint64_t v[8]; -} zfs_fletcher_avx512_t; - -typedef struct zfs_fletcher_aarch64_neon { - uint64_t v[2]; -} zfs_fletcher_aarch64_neon_t; - - -typedef union fletcher_4_ctx { - zio_cksum_t scalar; - zfs_fletcher_superscalar_t superscalar[4]; - -#if defined(HAVE_SSE2) || (defined(HAVE_SSE2) && defined(HAVE_SSSE3)) - zfs_fletcher_sse_t sse[4]; -#endif -#if defined(HAVE_AVX) && defined(HAVE_AVX2) - zfs_fletcher_avx_t avx[4]; -#endif -#if defined(__x86_64) && defined(HAVE_AVX512F) - zfs_fletcher_avx512_t avx512[4]; -#endif -#if defined(__aarch64__) - zfs_fletcher_aarch64_neon_t aarch64_neon[4]; -#endif -} fletcher_4_ctx_t; - -/* - * fletcher checksum struct - */ -typedef void (*fletcher_4_init_f)(fletcher_4_ctx_t *); -typedef void (*fletcher_4_fini_f)(fletcher_4_ctx_t *, zio_cksum_t *); -typedef void (*fletcher_4_compute_f)(fletcher_4_ctx_t *, - const void *, uint64_t); - -typedef struct fletcher_4_func { - fletcher_4_init_f init_native; - fletcher_4_fini_f fini_native; - fletcher_4_compute_f compute_native; - fletcher_4_init_f init_byteswap; - fletcher_4_fini_f fini_byteswap; - fletcher_4_compute_f compute_byteswap; - boolean_t (*valid)(void); - boolean_t uses_fpu; - const char *name; -} __attribute__((aligned(64))) fletcher_4_ops_t; - -_ZFS_FLETCHER_H const fletcher_4_ops_t fletcher_4_superscalar_ops; -_ZFS_FLETCHER_H const fletcher_4_ops_t fletcher_4_superscalar4_ops; - -#if defined(HAVE_SSE2) -_ZFS_FLETCHER_H const fletcher_4_ops_t fletcher_4_sse2_ops; -#endif - -#if defined(HAVE_SSE2) && defined(HAVE_SSSE3) -_ZFS_FLETCHER_H const fletcher_4_ops_t fletcher_4_ssse3_ops; -#endif - -#if defined(HAVE_AVX) && defined(HAVE_AVX2) -_ZFS_FLETCHER_H const fletcher_4_ops_t fletcher_4_avx2_ops; -#endif - -#if defined(__x86_64) && defined(HAVE_AVX512F) -_ZFS_FLETCHER_H const fletcher_4_ops_t fletcher_4_avx512f_ops; -#endif - -#if defined(__x86_64) && defined(HAVE_AVX512BW) -_ZFS_FLETCHER_H const fletcher_4_ops_t fletcher_4_avx512bw_ops; -#endif - -#if defined(__aarch64__) -_ZFS_FLETCHER_H const fletcher_4_ops_t fletcher_4_aarch64_neon_ops; -#endif - -#ifdef __cplusplus -} -#endif - -#endif /* _ZFS_FLETCHER_H */ |