diff options
Diffstat (limited to 'lib/raid6/tilegx.uc')
-rw-r--r-- | lib/raid6/tilegx.uc | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/lib/raid6/tilegx.uc b/lib/raid6/tilegx.uc deleted file mode 100644 index 2dd291a11264..000000000000 --- a/lib/raid6/tilegx.uc +++ /dev/null @@ -1,87 +0,0 @@ -/* -*- linux-c -*- ------------------------------------------------------- * - * - * Copyright 2002 H. Peter Anvin - All Rights Reserved - * Copyright 2012 Tilera Corporation - 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. - * - * ----------------------------------------------------------------------- */ - -/* - * tilegx$#.c - * - * $#-way unrolled TILE-Gx SIMD for RAID-6 math. - * - * This file is postprocessed using unroll.awk. - * - */ - -#include <linux/raid/pq.h> - -/* Create 8 byte copies of constant byte */ -# define NBYTES(x) (__insn_v1addi(0, x)) -# define NSIZE 8 - -/* - * The SHLBYTE() operation shifts each byte left by 1, *not* - * rolling over into the next byte - */ -static inline __attribute_const__ u64 SHLBYTE(u64 v) -{ - /* Vector One Byte Shift Left Immediate. */ - return __insn_v1shli(v, 1); -} - -/* - * The MASK() operation returns 0xFF in any byte for which the high - * bit is 1, 0x00 for any byte for which the high bit is 0. - */ -static inline __attribute_const__ u64 MASK(u64 v) -{ - /* Vector One Byte Shift Right Signed Immediate. */ - return __insn_v1shrsi(v, 7); -} - - -void raid6_tilegx$#_gen_syndrome(int disks, size_t bytes, void **ptrs) -{ - u8 **dptr = (u8 **)ptrs; - u64 *p, *q; - int d, z, z0; - - u64 wd$$, wq$$, wp$$, w1$$, w2$$; - u64 x1d = NBYTES(0x1d); - u64 * z0ptr; - - z0 = disks - 3; /* Highest data disk */ - p = (u64 *)dptr[z0+1]; /* XOR parity */ - q = (u64 *)dptr[z0+2]; /* RS syndrome */ - - z0ptr = (u64 *)&dptr[z0][0]; - for ( d = 0 ; d < bytes ; d += NSIZE*$# ) { - wq$$ = wp$$ = *z0ptr++; - for ( z = z0-1 ; z >= 0 ; z-- ) { - wd$$ = *(u64 *)&dptr[z][d+$$*NSIZE]; - wp$$ = wp$$ ^ wd$$; - w2$$ = MASK(wq$$); - w1$$ = SHLBYTE(wq$$); - w2$$ = w2$$ & x1d; - w1$$ = w1$$ ^ w2$$; - wq$$ = w1$$ ^ wd$$; - } - *p++ = wp$$; - *q++ = wq$$; - } -} - -const struct raid6_calls raid6_tilegx$# = { - raid6_tilegx$#_gen_syndrome, - NULL, /* XOR not yet implemented */ - NULL, - "tilegx$#", - 0 -}; |