include/asm-sparc64/xor.h

   1 /*
   2  * include/asm-sparc64/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
  23 extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
  24 extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
  25                       unsigned long *);
  26 extern void xor_vis_4(unsigned long, unsigned long *, unsigned long *,
  27                       unsigned long *, unsigned long *);
  28 extern void xor_vis_5(unsigned long, unsigned long *, unsigned long *,
  29                       unsigned long *, unsigned long *, unsigned long *);
  30
  31 /* XXX Ugh, write cheetah versions... -DaveM */
  32
  33 static struct xor_block_template xor_block_VIS = {
  34         .name   = "VIS",
  35         .do_2   = xor_vis_2,
  36         .do_3   = xor_vis_3,
  37         .do_4   = xor_vis_4,
  38         .do_5   = xor_vis_5,
  39 };
  40
  41 extern void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
  42 extern void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
  43                           unsigned long *);
  44 extern void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
  45                           unsigned long *, unsigned long *);
  46 extern void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
  47                           unsigned long *, unsigned long *, unsigned long *);
  48
  49 static struct xor_block_template xor_block_niagara = {
  50         .name   = "Niagara",
  51         .do_2   = xor_niagara_2,
  52         .do_3   = xor_niagara_3,
  53         .do_4   = xor_niagara_4,
  54         .do_5   = xor_niagara_5,
  55 };
  56
  57 #undef XOR_TRY_TEMPLATES
  58 #define XOR_TRY_TEMPLATES                               \
  59         do {                                            \
  60                 xor_speed(&xor_block_VIS);              \
  61                 xor_speed(&xor_block_niagara);          \
  62         } while (0)
  63
  64 /* For VIS for everything except Niagara.  */
  65 #define XOR_SELECT_TEMPLATE(FASTEST) \
  66         ((tlb_type == hypervisor && \
  67           (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 || \
  68            sun4v_chip_type == SUN4V_CHIP_NIAGARA2)) ? \
  69          &xor_block_niagara : \
  70          &xor_block_VIS)