1/* 2 * include/asm/xor.h 3 * 4 * High speed xor_block operation for RAID4/5 utilizing the 5 * UltraSparc Visual Instruction Set and Niagara block-init 6 * twin-load instructions. 7 * 8 * Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz) 9 * Copyright (C) 2006 David S. Miller <davem@davemloft.net> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2, or (at your option) 14 * any later version. 15 * 16 * You should have received a copy of the GNU General Public License 17 * (for example /usr/src/linux/COPYING); if not, write to the Free 18 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 */ 20 21#include <asm/spitfire.h> 22 23extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *); 24extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *, 25 unsigned long *); 26extern void xor_vis_4(unsigned long, unsigned long *, unsigned long *, 27 unsigned long *, unsigned long *); 28extern void xor_vis_5(unsigned long, unsigned long *, unsigned long *, 29 unsigned long *, unsigned long *, unsigned long *); 30 31 32static struct xor_block_template xor_block_VIS = { 33 .name = "VIS", 34 .do_2 = xor_vis_2, 35 .do_3 = xor_vis_3, 36 .do_4 = xor_vis_4, 37 .do_5 = xor_vis_5, 38}; 39 40extern void xor_niagara_2(unsigned long, unsigned long *, unsigned long *); 41extern void xor_niagara_3(unsigned long, unsigned long *, unsigned long *, 42 unsigned long *); 43extern void xor_niagara_4(unsigned long, unsigned long *, unsigned long *, 44 unsigned long *, unsigned long *); 45extern void xor_niagara_5(unsigned long, unsigned long *, unsigned long *, 46 unsigned long *, unsigned long *, unsigned long *); 47 48static struct xor_block_template xor_block_niagara = { 49 .name = "Niagara", 50 .do_2 = xor_niagara_2, 51 .do_3 = xor_niagara_3, 52 .do_4 = xor_niagara_4, 53 .do_5 = xor_niagara_5, 54}; 55 56#undef XOR_TRY_TEMPLATES 57#define XOR_TRY_TEMPLATES \ 58 do { \ 59 xor_speed(&xor_block_VIS); \ 60 xor_speed(&xor_block_niagara); \ 61 } while (0) 62 63/* For VIS for everything except Niagara. */ 64#define XOR_SELECT_TEMPLATE(FASTEST) \ 65 ((tlb_type == hypervisor && \ 66 (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 || \ 67 sun4v_chip_type == SUN4V_CHIP_NIAGARA2)) ? \ 68 &xor_block_niagara : \ 69 &xor_block_VIS) 70