1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright 2024 Institute of Software, CAS. 4 * 5 * raid6/rvv.h 6 * 7 * Definitions for RISC-V RAID-6 code 8 */ 9 10 #ifdef __KERNEL__ 11 #include <asm/vector.h> 12 #else 13 #define kernel_vector_begin() 14 #define kernel_vector_end() 15 #include <sys/auxv.h> 16 #include <asm/hwcap.h> 17 #define has_vector() (getauxval(AT_HWCAP) & COMPAT_HWCAP_ISA_V) 18 #endif 19 20 #include <linux/raid/pq.h> 21 22 static int rvv_has_vector(void) 23 { 24 return has_vector(); 25 } 26 27 #define RAID6_RVV_WRAPPER(_n) \ 28 static void raid6_rvv ## _n ## _gen_syndrome(int disks, \ 29 size_t bytes, void **ptrs) \ 30 { \ 31 void raid6_rvv ## _n ## _gen_syndrome_real(int d, \ 32 unsigned long b, void **p); \ 33 kernel_vector_begin(); \ 34 raid6_rvv ## _n ## _gen_syndrome_real(disks, \ 35 (unsigned long)bytes, ptrs); \ 36 kernel_vector_end(); \ 37 } \ 38 static void raid6_rvv ## _n ## _xor_syndrome(int disks, \ 39 int start, int stop, \ 40 size_t bytes, void **ptrs) \ 41 { \ 42 void raid6_rvv ## _n ## _xor_syndrome_real(int d, \ 43 int s1, int s2, \ 44 unsigned long b, void **p); \ 45 kernel_vector_begin(); \ 46 raid6_rvv ## _n ## _xor_syndrome_real(disks, \ 47 start, stop, (unsigned long)bytes, ptrs); \ 48 kernel_vector_end(); \ 49 } \ 50 struct raid6_calls const raid6_rvvx ## _n = { \ 51 raid6_rvv ## _n ## _gen_syndrome, \ 52 raid6_rvv ## _n ## _xor_syndrome, \ 53 rvv_has_vector, \ 54 "rvvx" #_n, \ 55 0 \ 56 } 57