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
15void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
16void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
17	       unsigned long *);
18void xor_vis_4(unsigned long, unsigned long *, unsigned long *,
19	       unsigned long *, unsigned long *);
20void 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
25static 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
33void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
34void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
35		   unsigned long *);
36void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
37		   unsigned long *, unsigned long *);
38void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
39		   unsigned long *, unsigned long *, unsigned long *);
40
41static 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)
66