xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[SPARC64]: Niagara optimized XOR functions for RAID.

Browse Source 
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-02-25 17:16:29 -08:00
parent c4e9249b19
commit 3634476239
3 changed files with 342 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
include/asm-sparc64/xor.h
View File

@@ -2,9 +2,11 @@
* include/asm-sparc64/xor.h
*
* High speed xor_block operation for RAID4/5 utilizing the
* UltraSparc Visual Instruction Set.
* UltraSparc Visual Instruction Set and Niagara block-init
* twin-load instructions.
*
* Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz)
* Copyright (C) 2006 David S. Miller <davem@davemloft.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -16,8 +18,7 @@
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <asm/pstate.h>
#include <asm/asi.h>
#include <asm/spitfire.h>
extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
@@ -37,4 +38,29 @@ static struct xor_block_template xor_block_VIS = {
.do_5 = xor_vis_5,
};
#define XOR_TRY_TEMPLATES xor_speed(&xor_block_VIS)
extern void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
extern void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
unsigned long *);
extern void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
unsigned long *, unsigned long *);
extern void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
unsigned long *, unsigned long *, unsigned long *);
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 ? &xor_block_niagara : &xor_block_VIS)