80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* include/asm/xor.h
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*
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* High speed xor_block operation for RAID4/5 utilizing the
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* UltraSparc Visual Instruction Set and Niagara block-init
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* twin-load instructions.
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*
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* Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz)
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* Copyright (C) 2006 David S. Miller <davem@davemloft.net>
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*/
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#include <asm/spitfire.h>
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void xor_vis_2(unsigned long bytes, unsigned long * __restrict p1,
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const unsigned long * __restrict p2);
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void xor_vis_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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void xor_vis_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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void xor_vis_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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/* XXX Ugh, write cheetah versions... -DaveM */
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static struct xor_block_template xor_block_VIS = {
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.name = "VIS",
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.do_2 = xor_vis_2,
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.do_3 = xor_vis_3,
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.do_4 = xor_vis_4,
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.do_5 = xor_vis_5,
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};
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void xor_niagara_2(unsigned long bytes, unsigned long * __restrict p1,
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const unsigned long * __restrict p2);
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void xor_niagara_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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void xor_niagara_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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void xor_niagara_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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static struct xor_block_template xor_block_niagara = {
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.name = "Niagara",
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.do_2 = xor_niagara_2,
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.do_3 = xor_niagara_3,
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.do_4 = xor_niagara_4,
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.do_5 = xor_niagara_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_VIS); \
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xor_speed(&xor_block_niagara); \
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} while (0)
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/* For VIS for everything except Niagara. */
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#define XOR_SELECT_TEMPLATE(FASTEST) \
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((tlb_type == hypervisor && \
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(sun4v_chip_type == SUN4V_CHIP_NIAGARA1 || \
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sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || \
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sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || \
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sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || \
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sun4v_chip_type == SUN4V_CHIP_NIAGARA5)) ? \
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&xor_block_niagara : \
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&xor_block_VIS)
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