/* -*- 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 * * $#-way unrolled TILE-Gx SIMD for RAID-6 math. * * This file is postprocessed using unroll.awk. * */ #include /* Create 8 byte copies of constant byte */ # define NBYTES(x) (__insn_v1addi(0, x)) # define NSIZE 8 /* * The SHLBYTE() operation shifts each byte left by 1, *not* * rolling over into the next byte */ static inline __attribute_const__ u64 SHLBYTE(u64 v) { /* Vector One Byte Shift Left Immediate. */ return __insn_v1shli(v, 1); } /* * The MASK() operation returns 0xFF in any byte for which the high * bit is 1, 0x00 for any byte for which the high bit is 0. */ static inline __attribute_const__ u64 MASK(u64 v) { /* Vector One Byte Shift Right Signed Immediate. */ return __insn_v1shrsi(v, 7); } void raid6_tilegx$#_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 }; mp;id=97e219b7c1f75b14b29abe28ad53e8709e8d15e5'>diff

path: root/sound/pci/asihpi/hpimsgx.c

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