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c5674d00ca
This patch adds support for vector optimized XOR and it is tested in qemu. Co-developed-by: Han-Kuan Chen <hankuan.chen@sifive.com> Signed-off-by: Han-Kuan Chen <hankuan.chen@sifive.com> Signed-off-by: Greentime Hu <greentime.hu@sifive.com> Signed-off-by: Andy Chiu <andy.chiu@sifive.com> Tested-by: Björn Töpel <bjorn@rivosinc.com> Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20240115055929.4736-4-andy.chiu@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2021 SiFive
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*/
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#include <linux/hardirq.h>
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#include <asm-generic/xor.h>
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#ifdef CONFIG_RISCV_ISA_V
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#include <asm/vector.h>
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#include <asm/switch_to.h>
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#include <asm/asm-prototypes.h>
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static void xor_vector_2(unsigned long bytes, unsigned long *__restrict p1,
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const unsigned long *__restrict p2)
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{
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kernel_vector_begin();
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xor_regs_2_(bytes, p1, p2);
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kernel_vector_end();
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}
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static void xor_vector_3(unsigned long bytes, unsigned long *__restrict p1,
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const unsigned long *__restrict p2,
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const unsigned long *__restrict p3)
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{
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kernel_vector_begin();
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xor_regs_3_(bytes, p1, p2, p3);
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kernel_vector_end();
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}
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static void xor_vector_4(unsigned long bytes, unsigned long *__restrict p1,
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const unsigned long *__restrict p2,
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const unsigned long *__restrict p3,
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const unsigned long *__restrict p4)
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{
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kernel_vector_begin();
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xor_regs_4_(bytes, p1, p2, p3, p4);
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kernel_vector_end();
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}
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static void xor_vector_5(unsigned long bytes, unsigned long *__restrict p1,
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const unsigned long *__restrict p2,
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const unsigned long *__restrict p3,
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const unsigned long *__restrict p4,
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const unsigned long *__restrict p5)
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{
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kernel_vector_begin();
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xor_regs_5_(bytes, p1, p2, p3, p4, p5);
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kernel_vector_end();
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}
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static struct xor_block_template xor_block_rvv = {
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.name = "rvv",
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.do_2 = xor_vector_2,
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.do_3 = xor_vector_3,
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.do_4 = xor_vector_4,
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.do_5 = xor_vector_5
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};
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#undef XOR_TRY_TEMPLATES
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#define XOR_TRY_TEMPLATES \
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do { \
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xor_speed(&xor_block_8regs); \
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xor_speed(&xor_block_32regs); \
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if (has_vector()) { \
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xor_speed(&xor_block_rvv);\
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} \
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} while (0)
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#endif
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