/* -*- 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
};
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=045169816b31b10faed984b01c390db1b32ee4c1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?id=045169816b31b10faed984b01c390db1b32ee4c1'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf?id=045169816b31b10faed984b01c390db1b32ee4c1'>perf</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch?id=045169816b31b10faed984b01c390db1b32ee4c1'>arch</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/x86?id=045169816b31b10faed984b01c390db1b32ee4c1'>x86</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/x86/util?id=045169816b31b10faed984b01c390db1b32ee4c1'>util</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/x86/util/intel-pt.c?id=045169816b31b10faed984b01c390db1b32ee4c1'>intel-pt.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='045169816b31b10faed984b01c390db1b32ee4c1'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-10 09:47:13 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-10 09:47:13 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/x86/util/intel-pt.c?id=045169816b31b10faed984b01c390db1b32ee4c1'>045169816b31b10faed984b01c390db1b32ee4c1</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/arch/x86/util/intel-pt.c?id=045169816b31b10faed984b01c390db1b32ee4c1'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=045169816b31b10faed984b01c390db1b32ee4c1'>ecb1d0c763f3d8cb0af749717b66ac47e6981d33</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/arch/x86/util/intel-pt.c?id=045169816b31b10faed984b01c390db1b32ee4c1'>tools/perf/arch/x86/util/intel-pt.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/x86/util/intel-pt.c?id=cd6628953e4216b65e7d91ab70ff8e5b65c9fde9'>cd6628953e4216b65e7d91ab70ff8e5b65c9fde9</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/arch/x86/util/intel-pt.c?id=045169816b31b10faed984b01c390db1b32ee4c1&amp;id2=cd6628953e4216b65e7d91ab70ff8e5b65c9fde9'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/x86/util/intel-pt.c?id=678b5c6b22fed89a13d5b2267f423069a9b11c80'>678b5c6b22fed89a13d5b2267f423069a9b11c80</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/arch/x86/util/intel-pt.c?id=045169816b31b10faed984b01c390db1b32ee4c1&amp;id2=678b5c6b22fed89a13d5b2267f423069a9b11c80'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6</div><div class='commit-msg'>Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - Fix pointer size when caam is used with AArch64 boot loader on
     AArch32 kernel.

   - Fix ahash state corruption in marvell driver.

   - Fix buggy algif_aed tag handling.

   - Prevent mcryptd from being used with incompatible algorithms which
     can cause crashes"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif_aead - fix uninitialized variable warning
  crypto: mcryptd - Check mcryptd algorithm compatibility
  crypto: algif_aead - fix AEAD tag memory handling
  crypto: caam - fix pointer size for AArch64 boot loader, AArch32 kernel
  crypto: marvell - Don't corrupt state of an STD req for re-stepped ahash
  crypto: marvell - Don't copy hash operation twice into the SRAM
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=045169816b31b10faed984b01c390db1b32ee4c1'>Diffstat</a> (limited to 'tools/perf/arch/x86/util/intel-pt.c')</div><table summary='diffstat' class='diffstat'>