+++ /dev/null
-/*
- * Copyright (C) 2013 Andrea Mazzoleni
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#ifndef __RAID_INTERNAL_H
-#define __RAID_INTERNAL_H
-
-/*
- * Supported instruction sets.
- *
- * It may happen that the assembler is too old to support
- * all instructions, even if the architecture supports them.
- * These defines allow to exclude from the build the not supported ones.
- *
- * If in your project you use a predefined assembler, you can define them
- * using fixed values, instead of using the HAVE_* defines.
- */
-#if HAVE_CONFIG_H
-
-/* Includes the project configuration for HAVE_* defines */
-#include "config.h"
-
-/* If the compiler supports assembly */
-#if HAVE_ASSEMBLY
-/* Autodetect from the compiler */
-#if defined(__i386__)
-#define CONFIG_X86 1
-#define CONFIG_X86_32 1
-#endif
-#if defined(__x86_64__)
-#define CONFIG_X86 1
-#define CONFIG_X86_64 1
-#endif
-#endif
-
-/* Enables SSE2, SSSE3, AVX2 only if the assembler supports it */
-#if HAVE_SSE2
-#define CONFIG_SSE2 1
-#endif
-#if HAVE_SSSE3
-#define CONFIG_SSSE3 1
-#endif
-#if HAVE_AVX2
-#define CONFIG_AVX2 1
-#endif
-
-#else /* if HAVE_CONFIG_H is not defined */
-
-/* Assume that assembly is always supported */
-#if defined(__i386__)
-#define CONFIG_X86 1
-#define CONFIG_X86_32 1
-#endif
-
-#if defined(__x86_64__)
-#define CONFIG_X86 1
-#define CONFIG_X86_64 1
-#endif
-
-/* Assumes that the assembler supports everything */
-#ifdef CONFIG_X86
-#define CONFIG_SSE2 1
-#define CONFIG_SSSE3 1
-#define CONFIG_AVX2 1
-#endif
-#endif
-
-/*
- * Includes anything required for compatibility.
- */
-#include <assert.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-/*
- * Inverse assert.
- */
-#define BUG_ON(a) assert(!(a))
-
-/*
- * Forced inline.
- */
-#ifndef __always_inline
-#define __always_inline inline __attribute__((always_inline))
-#endif
-
-/*
- * Forced alignment.
- */
-#ifndef __aligned
-#define __aligned(a) __attribute__((aligned(a)))
-#endif
-
-/*
- * Align a pointer at the specified size.
- */
-static __always_inline void *__align_ptr(void *ptr, uintptr_t size)
-{
- uintptr_t offset = (uintptr_t)ptr;
-
- offset = (offset + size - 1U) & ~(size - 1U);
-
- return (void *)offset;
-}
-
-/*
- * Includes the main interface headers.
- */
-#include "raid.h"
-#include "helper.h"
-
-/*
- * Internal functions.
- *
- * These are intended to provide access for testing.
- */
-int raid_selftest(void);
-void raid_gen_ref(int nd, int np, size_t size, void **vv);
-void raid_invert(uint8_t *M, uint8_t *V, int n);
-void raid_delta_gen(int nr, int *id, int *ip, int nd, size_t size, void **v);
-void raid_rec1of1(int *id, int nd, size_t size, void **v);
-void raid_rec2of2_int8(int *id, int *ip, int nd, size_t size, void **vv);
-void raid_gen1_int32(int nd, size_t size, void **vv);
-void raid_gen1_int64(int nd, size_t size, void **vv);
-void raid_gen1_sse2(int nd, size_t size, void **vv);
-void raid_gen1_avx2(int nd, size_t size, void **vv);
-void raid_gen2_int32(int nd, size_t size, void **vv);
-void raid_gen2_int64(int nd, size_t size, void **vv);
-void raid_gen2_sse2(int nd, size_t size, void **vv);
-void raid_gen2_avx2(int nd, size_t size, void **vv);
-void raid_gen2_sse2ext(int nd, size_t size, void **vv);
-void raid_genz_int32(int nd, size_t size, void **vv);
-void raid_genz_int64(int nd, size_t size, void **vv);
-void raid_genz_sse2(int nd, size_t size, void **vv);
-void raid_genz_sse2ext(int nd, size_t size, void **vv);
-void raid_genz_avx2ext(int nd, size_t size, void **vv);
-void raid_gen3_int8(int nd, size_t size, void **vv);
-void raid_gen3_ssse3(int nd, size_t size, void **vv);
-void raid_gen3_ssse3ext(int nd, size_t size, void **vv);
-void raid_gen3_avx2ext(int nd, size_t size, void **vv);
-void raid_gen4_int8(int nd, size_t size, void **vv);
-void raid_gen4_ssse3(int nd, size_t size, void **vv);
-void raid_gen4_ssse3ext(int nd, size_t size, void **vv);
-void raid_gen4_avx2ext(int nd, size_t size, void **vv);
-void raid_gen5_int8(int nd, size_t size, void **vv);
-void raid_gen5_ssse3(int nd, size_t size, void **vv);
-void raid_gen5_ssse3ext(int nd, size_t size, void **vv);
-void raid_gen5_avx2ext(int nd, size_t size, void **vv);
-void raid_gen6_int8(int nd, size_t size, void **vv);
-void raid_gen6_ssse3(int nd, size_t size, void **vv);
-void raid_gen6_ssse3ext(int nd, size_t size, void **vv);
-void raid_gen6_avx2ext(int nd, size_t size, void **vv);
-void raid_rec1_int8(int nr, int *id, int *ip, int nd, size_t size, void **vv);
-void raid_rec2_int8(int nr, int *id, int *ip, int nd, size_t size, void **vv);
-void raid_recX_int8(int nr, int *id, int *ip, int nd, size_t size, void **vv);
-void raid_rec1_ssse3(int nr, int *id, int *ip, int nd, size_t size, void **vv);
-void raid_rec2_ssse3(int nr, int *id, int *ip, int nd, size_t size, void **vv);
-void raid_recX_ssse3(int nr, int *id, int *ip, int nd, size_t size, void **vv);
-void raid_rec1_avx2(int nr, int *id, int *ip, int nd, size_t size, void **vv);
-void raid_rec2_avx2(int nr, int *id, int *ip, int nd, size_t size, void **vv);
-void raid_recX_avx2(int nr, int *id, int *ip, int nd, size_t size, void **vv);
-
-/*
- * Internal naming.
- *
- * These are intented to provide access for testing.
- */
-const char *raid_gen1_tag(void);
-const char *raid_gen2_tag(void);
-const char *raid_genz_tag(void);
-const char *raid_gen3_tag(void);
-const char *raid_gen4_tag(void);
-const char *raid_gen5_tag(void);
-const char *raid_gen6_tag(void);
-const char *raid_rec1_tag(void);
-const char *raid_rec2_tag(void);
-const char *raid_recX_tag(void);
-
-/*
- * Internal forwarders.
- */
-extern void (*raid_gen3_ptr)(int nd, size_t size, void **vv);
-extern void (*raid_genz_ptr)(int nd, size_t size, void **vv);
-extern void (*raid_gen_ptr[RAID_PARITY_MAX])(
- int nd, size_t size, void **vv);
-extern void (*raid_rec_ptr[RAID_PARITY_MAX])(
- int nr, int *id, int *ip, int nd, size_t size, void **vv);
-
-/*
- * Tables.
- */
-extern const uint8_t raid_gfmul[256][256] __aligned(256);
-extern const uint8_t raid_gfexp[256] __aligned(256);
-extern const uint8_t raid_gfinv[256] __aligned(256);
-extern const uint8_t raid_gfvandermonde[3][256] __aligned(256);
-extern const uint8_t raid_gfcauchy[6][256] __aligned(256);
-extern const uint8_t raid_gfcauchypshufb[251][4][2][16] __aligned(256);
-extern const uint8_t raid_gfmulpshufb[256][2][16] __aligned(256);
-extern const uint8_t (*raid_gfgen)[256];
-#define gfmul raid_gfmul
-#define gfexp raid_gfexp
-#define gfinv raid_gfinv
-#define gfvandermonde raid_gfvandermonde
-#define gfcauchy raid_gfcauchy
-#define gfgenpshufb raid_gfcauchypshufb
-#define gfmulpshufb raid_gfmulpshufb
-#define gfgen raid_gfgen
-
-/*
- * Assembler blocks.
- */
-#ifdef CONFIG_X86
-#ifdef CONFIG_SSE2
-static __always_inline void raid_sse_begin(void)
-{
-}
-
-static __always_inline void raid_sse_end(void)
-{
- /* SSE and AVX code uses non-temporal writes, like MOVNTDQ, */
- /* that use a weak memory model. To ensure that other processors */
- /* see correctly the data written, we use a store-store memory */
- /* barrier at the end of the asm code */
- asm volatile ("sfence" : : : "memory");
-
- /* clobbers registers used in the asm code */
- /* this is required because in the Windows ABI, */
- /* registers xmm6-xmm15 should be kept by the callee. */
- /* this clobber list force the compiler to save any */
- /* register that needs to be saved */
- /* we check for __SSE2_ because we require that the */
- /* compiler supports SSE2 registers in the clobber list */
-#ifdef __SSE2__
- asm volatile ("" : : : "%xmm0", "%xmm1", "%xmm2", "%xmm3");
- asm volatile ("" : : : "%xmm4", "%xmm5", "%xmm6", "%xmm7");
-#ifdef CONFIG_X86_64
- asm volatile ("" : : : "%xmm8", "%xmm9", "%xmm10", "%xmm11");
- asm volatile ("" : : : "%xmm12", "%xmm13", "%xmm14", "%xmm15");
-#endif
-#endif
-}
-#endif
-
-#ifdef CONFIG_AVX2
-static __always_inline void raid_avx_begin(void)
-{
- raid_sse_begin();
-}
-
-static __always_inline void raid_avx_end(void)
-{
- raid_sse_end();
-
- /* reset the upper part of the ymm registers */
- /* to avoid the 70 clocks penality on the next */
- /* xmm register use */
- asm volatile ("vzeroupper" : : : "memory");
-}
-#endif
-#endif /* CONFIG_X86 */
-
-#endif
-
projects / bcachefs-tools-debian / blobdiff