/*
 * IOMMU helper functions for the free area management
 */

#include <linux/export.h>
#include <linux/bitmap.h>
#include <linux/bug.h>

int iommu_is_span_boundary(unsigned int index, unsigned int nr,
			   unsigned long shift,
			   unsigned long boundary_size)
{
	BUG_ON(!is_power_of_2(boundary_size));

	shift = (shift + index) & (boundary_size - 1);
	return shift + nr > boundary_size;
}

unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
			       unsigned long start, unsigned int nr,
			       unsigned long shift, unsigned long boundary_size,
			       unsigned long align_mask)
{
	unsigned long index;

	/* We don't want the last of the limit */
	size -= 1;
again:
	index = bitmap_find_next_zero_area(map, size, start, nr, align_mask);
	if (index < size) {
		if (iommu_is_span_boundary(index, nr, shift, boundary_size)) {
			start = ALIGN(shift + index, boundary_size) - shift;
			goto again;
		}
		bitmap_set(map, index, nr);
		return index;
	}
	return -1;
}
EXPORT_SYMBOL(iommu_area_alloc);
-cleanup</option>
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=3e5de27e940d00d8d504dfb96625fb654f641509'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=3e5de27e940d00d8d504dfb96625fb654f641509'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/wireless?id=3e5de27e940d00d8d504dfb96625fb654f641509'>wireless</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/wireless/db.txt?id=3e5de27e940d00d8d504dfb96625fb654f641509'>db.txt</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3e5de27e940d00d8d504dfb96625fb654f641509'/><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'>2016-12-04 12:50:51 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-04 12:50:51 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/wireless/db.txt?id=3e5de27e940d00d8d504dfb96625fb654f641509'>3e5de27e940d00d8d504dfb96625fb654f641509</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/wireless/db.txt?id=3e5de27e940d00d8d504dfb96625fb654f641509'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3e5de27e940d00d8d504dfb96625fb654f641509'>b38dbbb5c36de40798435623d8db8736d9a26bb0</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/wireless/db.txt?id=3e5de27e940d00d8d504dfb96625fb654f641509'>net/wireless/db.txt</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/wireless/db.txt?id=0cb65c83304a341b9d09678448d7c8b550689531'>0cb65c83304a341b9d09678448d7c8b550689531</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/wireless/db.txt?id=3e5de27e940d00d8d504dfb96625fb654f641509&amp;id2=0cb65c83304a341b9d09678448d7c8b550689531'>diff</a>)</td></tr></table>
<div class='commit-subject'>Linux 4.9-rc8</div><div class='commit-msg'></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3e5de27e940d00d8d504dfb96625fb654f641509'>Diffstat</a> (limited to 'net/wireless/db.txt')</div><table summary='diffstat' class='diffstat'>