mirror of https://gitee.com/openkylin/linux.git
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* You should have received a copy of the GNU General Public License
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* (for example /usr/src/linux/COPYING); if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <asm/spitfire.h>
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extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
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extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
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unsigned long *);
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extern void xor_vis_4(unsigned long, unsigned long *, unsigned long *,
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unsigned long *, unsigned long *);
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extern void xor_vis_5(unsigned long, unsigned long *, unsigned long *,
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unsigned long *, unsigned long *, unsigned long *);
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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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extern void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
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extern void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
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unsigned long *);
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extern void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
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unsigned long *, unsigned long *);
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extern void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
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unsigned long *, unsigned long *, unsigned long *);
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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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&xor_block_niagara : \
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&xor_block_VIS)
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