tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
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/* XXX Ugh, write cheetah versions... -DaveM */
32
33static 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
41extern void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
42extern void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
43 unsigned long *);
44extern void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
45 unsigned long *, unsigned long *);
46extern void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
47 unsigned long *, unsigned long *, unsigned long *);
48
49static 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 ? &xor_block_niagara : &xor_block_VIS)