270 lines
7.3 KiB
C
270 lines
7.3 KiB
C
/*
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* include/asm/xor.h
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*
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* Optimized RAID-5 checksumming functions for 32-bit Sparc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* You should have received a copy of the GNU General Public License
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* (for example /usr/src/linux/COPYING); if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* High speed xor_block operation for RAID4/5 utilizing the
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* ldd/std SPARC instructions.
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*
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* Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz)
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*/
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static void
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sparc_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
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{
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int lines = bytes / (sizeof (long)) / 8;
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do {
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__asm__ __volatile__(
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"ldd [%0 + 0x00], %%g2\n\t"
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"ldd [%0 + 0x08], %%g4\n\t"
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"ldd [%0 + 0x10], %%o0\n\t"
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"ldd [%0 + 0x18], %%o2\n\t"
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"ldd [%1 + 0x00], %%o4\n\t"
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"ldd [%1 + 0x08], %%l0\n\t"
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"ldd [%1 + 0x10], %%l2\n\t"
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"ldd [%1 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"std %%g2, [%0 + 0x00]\n\t"
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"std %%g4, [%0 + 0x08]\n\t"
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"std %%o0, [%0 + 0x10]\n\t"
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"std %%o2, [%0 + 0x18]\n"
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:
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: "r" (p1), "r" (p2)
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: "g2", "g3", "g4", "g5",
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"o0", "o1", "o2", "o3", "o4", "o5",
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"l0", "l1", "l2", "l3", "l4", "l5");
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p1 += 8;
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p2 += 8;
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} while (--lines > 0);
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}
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static void
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sparc_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
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unsigned long *p3)
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{
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int lines = bytes / (sizeof (long)) / 8;
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do {
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__asm__ __volatile__(
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"ldd [%0 + 0x00], %%g2\n\t"
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"ldd [%0 + 0x08], %%g4\n\t"
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"ldd [%0 + 0x10], %%o0\n\t"
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"ldd [%0 + 0x18], %%o2\n\t"
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"ldd [%1 + 0x00], %%o4\n\t"
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"ldd [%1 + 0x08], %%l0\n\t"
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"ldd [%1 + 0x10], %%l2\n\t"
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"ldd [%1 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"ldd [%2 + 0x00], %%o4\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"ldd [%2 + 0x08], %%l0\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"ldd [%2 + 0x10], %%l2\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"ldd [%2 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"std %%g2, [%0 + 0x00]\n\t"
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"std %%g4, [%0 + 0x08]\n\t"
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"std %%o0, [%0 + 0x10]\n\t"
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"std %%o2, [%0 + 0x18]\n"
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:
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: "r" (p1), "r" (p2), "r" (p3)
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: "g2", "g3", "g4", "g5",
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"o0", "o1", "o2", "o3", "o4", "o5",
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"l0", "l1", "l2", "l3", "l4", "l5");
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p1 += 8;
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p2 += 8;
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p3 += 8;
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} while (--lines > 0);
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}
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static void
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sparc_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
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unsigned long *p3, unsigned long *p4)
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{
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int lines = bytes / (sizeof (long)) / 8;
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do {
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__asm__ __volatile__(
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"ldd [%0 + 0x00], %%g2\n\t"
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"ldd [%0 + 0x08], %%g4\n\t"
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"ldd [%0 + 0x10], %%o0\n\t"
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"ldd [%0 + 0x18], %%o2\n\t"
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"ldd [%1 + 0x00], %%o4\n\t"
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"ldd [%1 + 0x08], %%l0\n\t"
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"ldd [%1 + 0x10], %%l2\n\t"
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"ldd [%1 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"ldd [%2 + 0x00], %%o4\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"ldd [%2 + 0x08], %%l0\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"ldd [%2 + 0x10], %%l2\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"ldd [%2 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"ldd [%3 + 0x00], %%o4\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"ldd [%3 + 0x08], %%l0\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"ldd [%3 + 0x10], %%l2\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"ldd [%3 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"std %%g2, [%0 + 0x00]\n\t"
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"std %%g4, [%0 + 0x08]\n\t"
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"std %%o0, [%0 + 0x10]\n\t"
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"std %%o2, [%0 + 0x18]\n"
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:
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: "r" (p1), "r" (p2), "r" (p3), "r" (p4)
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: "g2", "g3", "g4", "g5",
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"o0", "o1", "o2", "o3", "o4", "o5",
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"l0", "l1", "l2", "l3", "l4", "l5");
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p1 += 8;
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p2 += 8;
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p3 += 8;
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p4 += 8;
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} while (--lines > 0);
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}
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static void
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sparc_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
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unsigned long *p3, unsigned long *p4, unsigned long *p5)
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{
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int lines = bytes / (sizeof (long)) / 8;
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do {
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__asm__ __volatile__(
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"ldd [%0 + 0x00], %%g2\n\t"
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"ldd [%0 + 0x08], %%g4\n\t"
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"ldd [%0 + 0x10], %%o0\n\t"
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"ldd [%0 + 0x18], %%o2\n\t"
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"ldd [%1 + 0x00], %%o4\n\t"
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"ldd [%1 + 0x08], %%l0\n\t"
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"ldd [%1 + 0x10], %%l2\n\t"
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"ldd [%1 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"ldd [%2 + 0x00], %%o4\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"ldd [%2 + 0x08], %%l0\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"ldd [%2 + 0x10], %%l2\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"ldd [%2 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"ldd [%3 + 0x00], %%o4\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"ldd [%3 + 0x08], %%l0\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"ldd [%3 + 0x10], %%l2\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"ldd [%3 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"ldd [%4 + 0x00], %%o4\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"ldd [%4 + 0x08], %%l0\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"ldd [%4 + 0x10], %%l2\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"ldd [%4 + 0x18], %%l4\n\t"
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"xor %%g2, %%o4, %%g2\n\t"
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"xor %%g3, %%o5, %%g3\n\t"
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"xor %%g4, %%l0, %%g4\n\t"
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"xor %%g5, %%l1, %%g5\n\t"
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"xor %%o0, %%l2, %%o0\n\t"
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"xor %%o1, %%l3, %%o1\n\t"
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"xor %%o2, %%l4, %%o2\n\t"
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"xor %%o3, %%l5, %%o3\n\t"
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"std %%g2, [%0 + 0x00]\n\t"
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"std %%g4, [%0 + 0x08]\n\t"
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"std %%o0, [%0 + 0x10]\n\t"
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"std %%o2, [%0 + 0x18]\n"
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:
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: "r" (p1), "r" (p2), "r" (p3), "r" (p4), "r" (p5)
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: "g2", "g3", "g4", "g5",
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"o0", "o1", "o2", "o3", "o4", "o5",
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"l0", "l1", "l2", "l3", "l4", "l5");
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p1 += 8;
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p2 += 8;
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p3 += 8;
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p4 += 8;
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p5 += 8;
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} while (--lines > 0);
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}
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static struct xor_block_template xor_block_SPARC = {
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.name = "SPARC",
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.do_2 = sparc_2,
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.do_3 = sparc_3,
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.do_4 = sparc_4,
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.do_5 = sparc_5,
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};
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/* For grins, also test the generic routines. */
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#include <asm-generic/xor.h>
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#undef XOR_TRY_TEMPLATES
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#define XOR_TRY_TEMPLATES \
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do { \
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xor_speed(&xor_block_8regs); \
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xor_speed(&xor_block_32regs); \
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xor_speed(&xor_block_SPARC); \
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} while (0)
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