/*
 * linux/lib/raid6/neon.c - RAID6 syndrome calculation using ARM NEON intrinsics
 *
 * Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/raid/pq.h>

#ifdef __KERNEL__
#include <asm/neon.h>
#else
#define kernel_neon_begin()
#define kernel_neon_end()
#define cpu_has_neon()		(1)
#endif

/*
 * There are 2 reasons these wrappers are kept in a separate compilation unit
 * from the actual implementations in neonN.c (generated from neon.uc by
 * unroll.awk):
 * - the actual implementations use NEON intrinsics, and the GCC support header
 *   (arm_neon.h) is not fully compatible (type wise) with the kernel;
 * - the neonN.c files are compiled with -mfpu=neon and optimization enabled,
 *   and we have to make sure that we never use *any* NEON/VFP instructions
 *   outside a kernel_neon_begin()/kernel_neon_end() pair.
 */

#define RAID6_NEON_WRAPPER(_n)						\
	static void raid6_neon ## _n ## _gen_syndrome(int disks,	\
					size_t bytes, void **ptrs)	\
	{								\
		void raid6_neon ## _n  ## _gen_syndrome_real(int,	\
						unsigned long, void**);	\
		kernel_neon_begin();					\
		raid6_neon ## _n ## _gen_syndrome_real(disks,		\
					(unsigned long)bytes, ptrs);	\
		kernel_neon_end();					\
	}								\
	static void raid6_neon ## _n ## _xor_syndrome(int disks,	\
					int start, int stop, 		\
					size_t bytes, void **ptrs)	\
	{								\
		void raid6_neon ## _n  ## _xor_syndrome_real(int,	\
				int, int, unsigned long, void**);	\
		kernel_neon_begin();					\
		raid6_neon ## _n ## _xor_syndrome_real(disks,		\
			start, stop, (unsigned long)bytes, ptrs);	\
		kernel_neon_end();					\
	}								\
	struct raid6_calls const raid6_neonx ## _n = {			\
		raid6_neon ## _n ## _gen_syndrome,			\
		raid6_neon ## _n ## _xor_syndrome,			\
		raid6_have_neon,					\
		"neonx" #_n,						\
		0							\
	}

static int raid6_have_neon(void)
{
	return cpu_has_neon();
}

RAID6_NEON_WRAPPER(1);
RAID6_NEON_WRAPPER(2);
RAID6_NEON_WRAPPER(4);
RAID6_NEON_WRAPPER(8);
298e077b'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/can/bcm.c'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='2ceb813798e1fd33e71a574771828c0f298e077b'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=2ceb813798e1fd33e71a574771828c0f298e077b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=2ceb813798e1fd33e71a574771828c0f298e077b'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/can?h=nds-private-remove&amp;id=2ceb813798e1fd33e71a574771828c0f298e077b'>can</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/can/bcm.c?h=nds-private-remove&amp;id=2ceb813798e1fd33e71a574771828c0f298e077b'>bcm.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/can/bcm.c?h=nds-private-remove&amp;id=2ceb813798e1fd33e71a574771828c0f298e077b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
on><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'>2017-01-29 10:56:56 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-29 10:56:56 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rds/tcp_connect.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>2c5d9555d6d937966d79d4c6529a5f7b9206e405</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/rds/tcp_connect.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>4f3d220ea3aeaadcae0796c5456e0ef9a908071d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/rds/tcp_connect.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>net/rds/tcp_connect.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rds/tcp_connect.c?id=53cd1ad1a68fd10f677445e04ed63aa9ce39b36b'>53cd1ad1a68fd10f677445e04ed63aa9ce39b36b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/rds/tcp_connect.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405&amp;id2=53cd1ad1a68fd10f677445e04ed63aa9ce39b36b'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rds/tcp_connect.c?id=2ad5d52d42810bed95100a3d912679d8864421ec'>2ad5d52d42810bed95100a3d912679d8864421ec</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/rds/tcp_connect.c?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405&amp;id2=2ad5d52d42810bed95100a3d912679d8864421ec'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'parisc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux</div><div class='commit-msg'>Pull two parisc fixes from Helge Deller:
 "One fix to avoid usage of BITS_PER_LONG in user-space exported swab.h
  header which breaks compiling qemu, and one trivial fix for printk
  continuation in the parisc parport driver"

* 'parisc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
  parisc, parport_gsc: Fixes for printk continuation lines
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=2c5d9555d6d937966d79d4c6529a5f7b9206e405'>Diffstat</a> (limited to 'net/rds/tcp_connect.c')</div><table summary='diffstat' class='diffstat'>