/* SPDX-License-Identifier: GPL-2.0-or-later */ /* -*- linux-c -*- ------------------------------------------------------- * * * Copyright 2003 H. Peter Anvin - All Rights Reserved * * ----------------------------------------------------------------------- */ #ifndef LINUX_RAID_RAID6_H #define LINUX_RAID_RAID6_H #ifdef __KERNEL__ #include <linux/blkdev.h> extern const char raid6_empty_zero_page[PAGE_SIZE]; #else /* ! __KERNEL__ */ /* Used for testing in user space */ #include <errno.h> #include <inttypes.h> #include <stddef.h> #include <string.h> #include <sys/mman.h> #include <sys/time.h> #include <sys/types.h> /* Not standard, but glibc defines it */ #define BITS_PER_LONG … typedef uint8_t u8; typedef uint16_t u16; typedef uint32_t u32; typedef uint64_t u64; #ifndef PAGE_SIZE #define PAGE_SIZE … #endif #ifndef PAGE_SHIFT #define PAGE_SHIFT … #endif extern const char raid6_empty_zero_page[PAGE_SIZE]; #define __init #define __exit #ifndef __attribute_const__ #define __attribute_const__ … #endif #define noinline … #define preempt_enable … #define preempt_disable … #define cpu_has_feature … #define enable_kernel_altivec … #define disable_kernel_altivec … #undef EXPORT_SYMBOL #define EXPORT_SYMBOL … #undef EXPORT_SYMBOL_GPL #define EXPORT_SYMBOL_GPL … #define MODULE_LICENSE … #define MODULE_DESCRIPTION … #define subsys_initcall … #define module_exit … #define IS_ENABLED … #define CONFIG_RAID6_PQ_BENCHMARK … #endif /* __KERNEL__ */ /* Routine choices */ struct raid6_calls { … }; /* Selected algorithm */ extern struct raid6_calls raid6_call; /* Various routine sets */ extern const struct raid6_calls raid6_intx1; extern const struct raid6_calls raid6_intx2; extern const struct raid6_calls raid6_intx4; extern const struct raid6_calls raid6_intx8; extern const struct raid6_calls raid6_mmxx1; extern const struct raid6_calls raid6_mmxx2; extern const struct raid6_calls raid6_sse1x1; extern const struct raid6_calls raid6_sse1x2; extern const struct raid6_calls raid6_sse2x1; extern const struct raid6_calls raid6_sse2x2; extern const struct raid6_calls raid6_sse2x4; extern const struct raid6_calls raid6_altivec1; extern const struct raid6_calls raid6_altivec2; extern const struct raid6_calls raid6_altivec4; extern const struct raid6_calls raid6_altivec8; extern const struct raid6_calls raid6_avx2x1; extern const struct raid6_calls raid6_avx2x2; extern const struct raid6_calls raid6_avx2x4; extern const struct raid6_calls raid6_avx512x1; extern const struct raid6_calls raid6_avx512x2; extern const struct raid6_calls raid6_avx512x4; extern const struct raid6_calls raid6_s390vx8; extern const struct raid6_calls raid6_vpermxor1; extern const struct raid6_calls raid6_vpermxor2; extern const struct raid6_calls raid6_vpermxor4; extern const struct raid6_calls raid6_vpermxor8; extern const struct raid6_calls raid6_lsx; extern const struct raid6_calls raid6_lasx; struct raid6_recov_calls { … }; extern const struct raid6_recov_calls raid6_recov_intx1; extern const struct raid6_recov_calls raid6_recov_ssse3; extern const struct raid6_recov_calls raid6_recov_avx2; extern const struct raid6_recov_calls raid6_recov_avx512; extern const struct raid6_recov_calls raid6_recov_s390xc; extern const struct raid6_recov_calls raid6_recov_neon; extern const struct raid6_recov_calls raid6_recov_lsx; extern const struct raid6_recov_calls raid6_recov_lasx; extern const struct raid6_calls raid6_neonx1; extern const struct raid6_calls raid6_neonx2; extern const struct raid6_calls raid6_neonx4; extern const struct raid6_calls raid6_neonx8; /* Algorithm list */ extern const struct raid6_calls * const raid6_algos[]; extern const struct raid6_recov_calls *const raid6_recov_algos[]; int raid6_select_algo(void); /* Return values from chk_syndrome */ #define RAID6_OK … #define RAID6_P_BAD … #define RAID6_Q_BAD … #define RAID6_PQ_BAD … /* Galois field tables */ extern const u8 raid6_gfmul[256][256] __attribute__((aligned …)); extern const u8 raid6_vgfmul[256][32] __attribute__((aligned …)); extern const u8 raid6_gfexp[256] __attribute__((aligned …)); extern const u8 raid6_gflog[256] __attribute__((aligned …)); extern const u8 raid6_gfinv[256] __attribute__((aligned …)); extern const u8 raid6_gfexi[256] __attribute__((aligned …)); /* Recovery routines */ extern void (*raid6_2data_recov)(int disks, size_t bytes, int faila, int failb, void **ptrs); extern void (*raid6_datap_recov)(int disks, size_t bytes, int faila, void **ptrs); void raid6_dual_recov(int disks, size_t bytes, int faila, int failb, void **ptrs); /* Some definitions to allow code to be compiled for testing in userspace */ #ifndef __KERNEL__ #define jiffies … #define printk … #define pr_err … #define pr_info … #define GFP_KERNEL … #define __get_free_pages … #define free_pages … static inline void cpu_relax(void) { /* Nothing */ } #undef HZ #define HZ … static inline uint32_t raid6_jiffies(void) { struct timeval tv; gettimeofday(&tv, NULL); return tv.tv_sec*1000 + tv.tv_usec/1000; } #endif /* ! __KERNEL__ */ #endif /* LINUX_RAID_RAID6_H */
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