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 bytes, unsigned long * __restrict p1,
16 const unsigned long * __restrict p2);
17 void xor_vis_3(unsigned long bytes, unsigned long * __restrict p1,
18 const unsigned long * __restrict p2,
19 const unsigned long * __restrict p3);
20 void xor_vis_4(unsigned long bytes, unsigned long * __restrict p1,
21 const unsigned long * __restrict p2,
22 const unsigned long * __restrict p3,
23 const unsigned long * __restrict p4);
24 void xor_vis_5(unsigned long bytes, unsigned long * __restrict p1,
25 const unsigned long * __restrict p2,
26 const unsigned long * __restrict p3,
27 const unsigned long * __restrict p4,
28 const unsigned long * __restrict p5);
29
30 /* XXX Ugh, write cheetah versions... -DaveM */
31
32 static struct xor_block_template xor_block_VIS = {
33 .name = "VIS",
34 .do_2 = xor_vis_2,
35 .do_3 = xor_vis_3,
36 .do_4 = xor_vis_4,
37 .do_5 = xor_vis_5,
38 };
39
40 void xor_niagara_2(unsigned long bytes, unsigned long * __restrict p1,
41 const unsigned long * __restrict p2);
42 void xor_niagara_3(unsigned long bytes, unsigned long * __restrict p1,
43 const unsigned long * __restrict p2,
44 const unsigned long * __restrict p3);
45 void xor_niagara_4(unsigned long bytes, unsigned long * __restrict p1,
46 const unsigned long * __restrict p2,
47 const unsigned long * __restrict p3,
48 const unsigned long * __restrict p4);
49 void xor_niagara_5(unsigned long bytes, unsigned long * __restrict p1,
50 const unsigned long * __restrict p2,
51 const unsigned long * __restrict p3,
52 const unsigned long * __restrict p4,
53 const unsigned long * __restrict p5);
54
55 static struct xor_block_template xor_block_niagara = {
56 .name = "Niagara",
57 .do_2 = xor_niagara_2,
58 .do_3 = xor_niagara_3,
59 .do_4 = xor_niagara_4,
60 .do_5 = xor_niagara_5,
61 };
62
63 #undef XOR_TRY_TEMPLATES
64 #define XOR_TRY_TEMPLATES \
65 do { \
66 xor_speed(&xor_block_VIS); \
67 xor_speed(&xor_block_niagara); \
68 } while (0)
69
70 /* For VIS for everything except Niagara. */
71 #define XOR_SELECT_TEMPLATE(FASTEST) \
72 ((tlb_type == hypervisor && \
73 (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 || \
74 sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || \
75 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || \
76 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || \
77 sun4v_chip_type == SUN4V_CHIP_NIAGARA5)) ? \
78 &xor_block_niagara : \
79 &xor_block_VIS)
80
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