diff options
Diffstat (limited to 'arch/riscv/include/asm/xor.h')
-rw-r--r-- | arch/riscv/include/asm/xor.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/xor.h b/arch/riscv/include/asm/xor.h new file mode 100644 index 0000000000..96011861e4 --- /dev/null +++ b/arch/riscv/include/asm/xor.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2021 SiFive + */ + +#include <linux/hardirq.h> +#include <asm-generic/xor.h> +#ifdef CONFIG_RISCV_ISA_V +#include <asm/vector.h> +#include <asm/switch_to.h> +#include <asm/asm-prototypes.h> + +static void xor_vector_2(unsigned long bytes, unsigned long *__restrict p1, + const unsigned long *__restrict p2) +{ + kernel_vector_begin(); + xor_regs_2_(bytes, p1, p2); + kernel_vector_end(); +} + +static void xor_vector_3(unsigned long bytes, unsigned long *__restrict p1, + const unsigned long *__restrict p2, + const unsigned long *__restrict p3) +{ + kernel_vector_begin(); + xor_regs_3_(bytes, p1, p2, p3); + kernel_vector_end(); +} + +static void xor_vector_4(unsigned long bytes, unsigned long *__restrict p1, + const unsigned long *__restrict p2, + const unsigned long *__restrict p3, + const unsigned long *__restrict p4) +{ + kernel_vector_begin(); + xor_regs_4_(bytes, p1, p2, p3, p4); + kernel_vector_end(); +} + +static void xor_vector_5(unsigned long bytes, unsigned long *__restrict p1, + const unsigned long *__restrict p2, + const unsigned long *__restrict p3, + const unsigned long *__restrict p4, + const unsigned long *__restrict p5) +{ + kernel_vector_begin(); + xor_regs_5_(bytes, p1, p2, p3, p4, p5); + kernel_vector_end(); +} + +static struct xor_block_template xor_block_rvv = { + .name = "rvv", + .do_2 = xor_vector_2, + .do_3 = xor_vector_3, + .do_4 = xor_vector_4, + .do_5 = xor_vector_5 +}; + +#undef XOR_TRY_TEMPLATES +#define XOR_TRY_TEMPLATES \ + do { \ + xor_speed(&xor_block_8regs); \ + xor_speed(&xor_block_32regs); \ + if (has_vector()) { \ + xor_speed(&xor_block_rvv);\ + } \ + } while (0) +#endif |