summaryrefslogtreecommitdiff
path: root/drivers/md/raid6mmx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/md/raid6mmx.c')
-rw-r--r--drivers/md/raid6mmx.c142
1 files changed, 0 insertions, 142 deletions
diff --git a/drivers/md/raid6mmx.c b/drivers/md/raid6mmx.c
deleted file mode 100644
index e7f6c13132bf..000000000000
--- a/drivers/md/raid6mmx.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/* -*- linux-c -*- ------------------------------------------------------- *
- *
- * Copyright 2002 H. Peter Anvin - All Rights Reserved
- *
- * 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
- * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
- * Boston MA 02111-1307, USA; either version 2 of the License, or
- * (at your option) any later version; incorporated herein by reference.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * raid6mmx.c
- *
- * MMX implementation of RAID-6 syndrome functions
- */
-
-#if defined(__i386__) && !defined(__arch_um__)
-
-#include <linux/raid/pq.h>
-#include "raid6x86.h"
-
-/* Shared with raid6sse1.c */
-const struct raid6_mmx_constants {
- u64 x1d;
-} raid6_mmx_constants = {
- 0x1d1d1d1d1d1d1d1dULL,
-};
-
-static int raid6_have_mmx(void)
-{
- /* Not really "boot_cpu" but "all_cpus" */
- return boot_cpu_has(X86_FEATURE_MMX);
-}
-
-/*
- * Plain MMX implementation
- */
-static void raid6_mmx1_gen_syndrome(int disks, size_t bytes, void **ptrs)
-{
- u8 **dptr = (u8 **)ptrs;
- u8 *p, *q;
- int d, z, z0;
-
- z0 = disks - 3; /* Highest data disk */
- p = dptr[z0+1]; /* XOR parity */
- q = dptr[z0+2]; /* RS syndrome */
-
- kernel_fpu_begin();
-
- asm volatile("movq %0,%%mm0" : : "m" (raid6_mmx_constants.x1d));
- asm volatile("pxor %mm5,%mm5"); /* Zero temp */
-
- for ( d = 0 ; d < bytes ; d += 8 ) {
- asm volatile("movq %0,%%mm2" : : "m" (dptr[z0][d])); /* P[0] */
- asm volatile("movq %mm2,%mm4"); /* Q[0] */
- for ( z = z0-1 ; z >= 0 ; z-- ) {
- asm volatile("movq %0,%%mm6" : : "m" (dptr[z][d]));
- asm volatile("pcmpgtb %mm4,%mm5");
- asm volatile("paddb %mm4,%mm4");
- asm volatile("pand %mm0,%mm5");
- asm volatile("pxor %mm5,%mm4");
- asm volatile("pxor %mm5,%mm5");
- asm volatile("pxor %mm6,%mm2");
- asm volatile("pxor %mm6,%mm4");
- }
- asm volatile("movq %%mm2,%0" : "=m" (p[d]));
- asm volatile("pxor %mm2,%mm2");
- asm volatile("movq %%mm4,%0" : "=m" (q[d]));
- asm volatile("pxor %mm4,%mm4");
- }
-
- kernel_fpu_end();
-}
-
-const struct raid6_calls raid6_mmxx1 = {
- raid6_mmx1_gen_syndrome,
- raid6_have_mmx,
- "mmxx1",
- 0
-};
-
-/*
- * Unrolled-by-2 MMX implementation
- */
-static void raid6_mmx2_gen_syndrome(int disks, size_t bytes, void **ptrs)
-{
- u8 **dptr = (u8 **)ptrs;
- u8 *p, *q;
- int d, z, z0;
-
- z0 = disks - 3; /* Highest data disk */
- p = dptr[z0+1]; /* XOR parity */
- q = dptr[z0+2]; /* RS syndrome */
-
- kernel_fpu_begin();
-
- asm volatile("movq %0,%%mm0" : : "m" (raid6_mmx_constants.x1d));
- asm volatile("pxor %mm5,%mm5"); /* Zero temp */
- asm volatile("pxor %mm7,%mm7"); /* Zero temp */
-
- for ( d = 0 ; d < bytes ; d += 16 ) {
- asm volatile("movq %0,%%mm2" : : "m" (dptr[z0][d])); /* P[0] */
- asm volatile("movq %0,%%mm3" : : "m" (dptr[z0][d+8]));
- asm volatile("movq %mm2,%mm4"); /* Q[0] */
- asm volatile("movq %mm3,%mm6"); /* Q[1] */
- for ( z = z0-1 ; z >= 0 ; z-- ) {
- asm volatile("pcmpgtb %mm4,%mm5");
- asm volatile("pcmpgtb %mm6,%mm7");
- asm volatile("paddb %mm4,%mm4");
- asm volatile("paddb %mm6,%mm6");
- asm volatile("pand %mm0,%mm5");
- asm volatile("pand %mm0,%mm7");
- asm volatile("pxor %mm5,%mm4");
- asm volatile("pxor %mm7,%mm6");
- asm volatile("movq %0,%%mm5" : : "m" (dptr[z][d]));
- asm volatile("movq %0,%%mm7" : : "m" (dptr[z][d+8]));
- asm volatile("pxor %mm5,%mm2");
- asm volatile("pxor %mm7,%mm3");
- asm volatile("pxor %mm5,%mm4");
- asm volatile("pxor %mm7,%mm6");
- asm volatile("pxor %mm5,%mm5");
- asm volatile("pxor %mm7,%mm7");
- }
- asm volatile("movq %%mm2,%0" : "=m" (p[d]));
- asm volatile("movq %%mm3,%0" : "=m" (p[d+8]));
- asm volatile("movq %%mm4,%0" : "=m" (q[d]));
- asm volatile("movq %%mm6,%0" : "=m" (q[d+8]));
- }
-
- kernel_fpu_end();
-}
-
-const struct raid6_calls raid6_mmxx2 = {
- raid6_mmx2_gen_syndrome,
- raid6_have_mmx,
- "mmxx2",
- 0
-};
-
-#endif