16093faafSChunyan Zhang /* SPDX-License-Identifier: GPL-2.0-or-later */ 26093faafSChunyan Zhang /* 36093faafSChunyan Zhang * Copyright 2024 Institute of Software, CAS. 46093faafSChunyan Zhang * 56093faafSChunyan Zhang * raid6/rvv.h 66093faafSChunyan Zhang * 76093faafSChunyan Zhang * Definitions for RISC-V RAID-6 code 86093faafSChunyan Zhang */ 96093faafSChunyan Zhang 10*3c58d7a5SChunyan Zhang #ifdef __KERNEL__ 11*3c58d7a5SChunyan Zhang #include <asm/vector.h> 12*3c58d7a5SChunyan Zhang #else 13*3c58d7a5SChunyan Zhang #define kernel_vector_begin() 14*3c58d7a5SChunyan Zhang #define kernel_vector_end() 15*3c58d7a5SChunyan Zhang #include <sys/auxv.h> 16*3c58d7a5SChunyan Zhang #include <asm/hwcap.h> 17*3c58d7a5SChunyan Zhang #define has_vector() (getauxval(AT_HWCAP) & COMPAT_HWCAP_ISA_V) 18*3c58d7a5SChunyan Zhang #endif 19*3c58d7a5SChunyan Zhang 20*3c58d7a5SChunyan Zhang #include <linux/raid/pq.h> 21*3c58d7a5SChunyan Zhang 22*3c58d7a5SChunyan Zhang static int rvv_has_vector(void) 23*3c58d7a5SChunyan Zhang { 24*3c58d7a5SChunyan Zhang return has_vector(); 25*3c58d7a5SChunyan Zhang } 26*3c58d7a5SChunyan Zhang 276093faafSChunyan Zhang #define RAID6_RVV_WRAPPER(_n) \ 286093faafSChunyan Zhang static void raid6_rvv ## _n ## _gen_syndrome(int disks, \ 296093faafSChunyan Zhang size_t bytes, void **ptrs) \ 306093faafSChunyan Zhang { \ 316093faafSChunyan Zhang void raid6_rvv ## _n ## _gen_syndrome_real(int d, \ 326093faafSChunyan Zhang unsigned long b, void **p); \ 336093faafSChunyan Zhang kernel_vector_begin(); \ 346093faafSChunyan Zhang raid6_rvv ## _n ## _gen_syndrome_real(disks, \ 356093faafSChunyan Zhang (unsigned long)bytes, ptrs); \ 366093faafSChunyan Zhang kernel_vector_end(); \ 376093faafSChunyan Zhang } \ 386093faafSChunyan Zhang static void raid6_rvv ## _n ## _xor_syndrome(int disks, \ 396093faafSChunyan Zhang int start, int stop, \ 406093faafSChunyan Zhang size_t bytes, void **ptrs) \ 416093faafSChunyan Zhang { \ 426093faafSChunyan Zhang void raid6_rvv ## _n ## _xor_syndrome_real(int d, \ 436093faafSChunyan Zhang int s1, int s2, \ 446093faafSChunyan Zhang unsigned long b, void **p); \ 456093faafSChunyan Zhang kernel_vector_begin(); \ 466093faafSChunyan Zhang raid6_rvv ## _n ## _xor_syndrome_real(disks, \ 476093faafSChunyan Zhang start, stop, (unsigned long)bytes, ptrs); \ 486093faafSChunyan Zhang kernel_vector_end(); \ 496093faafSChunyan Zhang } \ 506093faafSChunyan Zhang struct raid6_calls const raid6_rvvx ## _n = { \ 516093faafSChunyan Zhang raid6_rvv ## _n ## _gen_syndrome, \ 526093faafSChunyan Zhang raid6_rvv ## _n ## _xor_syndrome, \ 536093faafSChunyan Zhang rvv_has_vector, \ 546093faafSChunyan Zhang "rvvx" #_n, \ 556093faafSChunyan Zhang 0 \ 566093faafSChunyan Zhang } 57