/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * include/asm/xor.h
 *
 * High speed xor_block operation for RAID4/5 utilizing the
 * UltraSparc Visual Instruction Set and Niagara block-init
 * twin-load instructions.
 *
 * Copyright (C) 1997, 1999 Jakub Jelinek ([email protected])
 * Copyright (C) 2006 David S. Miller <[email protected]>
 */

#include <asm/spitfire.h>

void xor_vis_2(unsigned long bytes, unsigned long * __restrict p1,
           const unsigned long * __restrict p2);
void xor_vis_3(unsigned long bytes, unsigned long * __restrict p1,
           const unsigned long * __restrict p2,
           const unsigned long * __restrict p3);
void xor_vis_4(unsigned long bytes, unsigned long * __restrict p1,
           const unsigned long * __restrict p2,
           const unsigned long * __restrict p3,
           const unsigned long * __restrict p4);
void xor_vis_5(unsigned long bytes, unsigned long * __restrict p1,
           const unsigned long * __restrict p2,
           const unsigned long * __restrict p3,
           const unsigned long * __restrict p4,
           const unsigned long * __restrict p5);

/* XXX Ugh, write cheetah versions... -DaveM */

static struct xor_block_template xor_block_VIS = {
        .name    = "VIS",
        .do_2    = xor_vis_2,
        .do_3    = xor_vis_3,
        .do_4    = xor_vis_4,
        .do_5    = xor_vis_5,
};

void xor_niagara_2(unsigned long bytes, unsigned long * __restrict p1,
           const unsigned long * __restrict p2);
void xor_niagara_3(unsigned long bytes, unsigned long * __restrict p1,
           const unsigned long * __restrict p2,
           const unsigned long * __restrict p3);
void xor_niagara_4(unsigned long bytes, unsigned long * __restrict p1,
           const unsigned long * __restrict p2,
           const unsigned long * __restrict p3,
           const unsigned long * __restrict p4);
void xor_niagara_5(unsigned long bytes, unsigned long * __restrict p1,
           const unsigned long * __restrict p2,
           const unsigned long * __restrict p3,
           const unsigned long * __restrict p4,
           const unsigned long * __restrict p5);

static struct xor_block_template xor_block_niagara = {
        .name    = "Niagara",
        .do_2    = xor_niagara_2,
        .do_3    = xor_niagara_3,
        .do_4    = xor_niagara_4,
        .do_5    = xor_niagara_5,
};

#undef XOR_TRY_TEMPLATES
#define XOR_TRY_TEMPLATES                \
    do {                        \
        xor_speed(&xor_block_VIS);        \
        xor_speed(&xor_block_niagara);        \
    } while (0)

/* For VIS for everything except Niagara.  */
#define XOR_SELECT_TEMPLATE(FASTEST) \
    ((tlb_type == hypervisor && \
      (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 || \
       sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || \
       sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || \
       sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || \
       sun4v_chip_type == SUN4V_CHIP_NIAGARA5)) ? \
     &xor_block_niagara : \
     &xor_block_VIS)