arch/sparc/include/asm/xor_64.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * include/asm/xor.h
   4  *
   5  * High speed xor_block operation for RAID4/5 utilizing the
   6  * UltraSparc Visual Instruction Set and Niagara block-init
   7  * twin-load instructions.
   8  *
   9  * Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz)
  10  * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
  11  */
  12
  13 #include <asm/spitfire.h>
  14
  15 void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
  16 void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
  17                unsigned long *);
  18 void xor_vis_4(unsigned long, unsigned long *, unsigned long *,
  19                unsigned long *, unsigned long *);
  20 void xor_vis_5(unsigned long, unsigned long *, unsigned long *,
  21                unsigned long *, unsigned long *, unsigned long *);
  22
  23 /* XXX Ugh, write cheetah versions... -DaveM */
  24
  25 static struct xor_block_template xor_block_VIS = {
  26         .name   = "VIS",
  27         .do_2   = xor_vis_2,
  28         .do_3   = xor_vis_3,
  29         .do_4   = xor_vis_4,
  30         .do_5   = xor_vis_5,
  31 };
  32
  33 void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
  34 void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
  35                    unsigned long *);
  36 void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
  37                    unsigned long *, unsigned long *);
  38 void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
  39                    unsigned long *, unsigned long *, unsigned long *);
  40
  41 static struct xor_block_template xor_block_niagara = {
  42         .name   = "Niagara",
  43         .do_2   = xor_niagara_2,
  44         .do_3   = xor_niagara_3,
  45         .do_4   = xor_niagara_4,
  46         .do_5   = xor_niagara_5,
  47 };
  48
  49 #undef XOR_TRY_TEMPLATES
  50 #define XOR_TRY_TEMPLATES                               \
  51         do {                                            \
  52                 xor_speed(&xor_block_VIS);              \
  53                 xor_speed(&xor_block_niagara);          \
  54         } while (0)
  55
  56 /* For VIS for everything except Niagara.  */
  57 #define XOR_SELECT_TEMPLATE(FASTEST) \
  58         ((tlb_type == hypervisor && \
  59           (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 || \
  60            sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || \
  61            sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || \
  62            sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || \
  63            sun4v_chip_type == SUN4V_CHIP_NIAGARA5)) ? \
  64          &xor_block_niagara : \
  65          &xor_block_VIS)