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xor_64.h
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1 /*
2  * include/asm/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 ([email protected])
9  * Copyright (C) 2006 David S. Miller <[email protected]>
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 
23 extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
24 extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
25  unsigned long *);
26 extern void xor_vis_4(unsigned long, unsigned long *, unsigned long *,
27  unsigned long *, unsigned long *);
28 extern 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 
33 static 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 
41 extern void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
42 extern void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
43  unsigned long *);
44 extern void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
45  unsigned long *, unsigned long *);
46 extern void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
47  unsigned long *, unsigned long *, unsigned long *);
48 
49 static 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 && \
67  (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 || \
68  sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || \
69  sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || \
70  sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || \
71  sun4v_chip_type == SUN4V_CHIP_NIAGARA5)) ? \
72  &xor_block_niagara : \
73  &xor_block_VIS)