/*
 * fixmap.h: compile-time virtual memory allocation
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1998 Ingo Molnar
 *
 * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
 * x86_32 and x86_64 integration by Gustavo F. Padovan, February 2009
 * Break out common bits to asm-generic by Mark Salter, November 2013
 */

#ifndef __ASM_GENERIC_FIXMAP_H
#define __ASM_GENERIC_FIXMAP_H

#include <linux/bug.h>

#define __fix_to_virt(x)	(FIXADDR_TOP - ((x) << PAGE_SHIFT))
#define __virt_to_fix(x)	((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)

#ifndef __ASSEMBLY__
/*
 * 'index to address' translation. If anyone tries to use the idx
 * directly without translation, we catch the bug with a NULL-deference
 * kernel oops. Illegal ranges of incoming indices are caught too.
 */
static __always_inline unsigned long fix_to_virt(const unsigned int idx)
{
	BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
	return __fix_to_virt(idx);
}

static inline unsigned long virt_to_fix(const unsigned long vaddr)
{
	BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
	return __virt_to_fix(vaddr);
}

/*
 * Provide some reasonable defaults for page flags.
 * Not all architectures use all of these different types and some
 * architectures use different names.
 */
#ifndef FIXMAP_PAGE_NORMAL
#define FIXMAP_PAGE_NORMAL PAGE_KERNEL
#endif
#if !defined(FIXMAP_PAGE_RO) && defined(PAGE_KERNEL_RO)
#define FIXMAP_PAGE_RO PAGE_KERNEL_RO
#endif
#ifndef FIXMAP_PAGE_NOCACHE
#define FIXMAP_PAGE_NOCACHE PAGE_KERNEL_NOCACHE
#endif
#ifndef FIXMAP_PAGE_IO
#define FIXMAP_PAGE_IO PAGE_KERNEL_IO
#endif
#ifndef FIXMAP_PAGE_CLEAR
#define FIXMAP_PAGE_CLEAR __pgprot(0)
#endif

#ifndef set_fixmap
#define set_fixmap(idx, phys)				\
	__set_fixmap(idx, phys, FIXMAP_PAGE_NORMAL)
#endif

#ifndef clear_fixmap
#define clear_fixmap(idx)			\
	__set_fixmap(idx, 0, FIXMAP_PAGE_CLEAR)
#endif

/* Return a pointer with offset calculated */
#define __set_fixmap_offset(idx, phys, flags)				\
({									\
	unsigned long ________addr;					\
	__set_fixmap(idx, phys, flags);					\
	________addr = fix_to_virt(idx) + ((phys) & (PAGE_SIZE - 1));	\
	________addr;							\
})

#define set_fixmap_offset(idx, phys) \
	__set_fixmap_offset(idx, phys, FIXMAP_PAGE_NORMAL)

/*
 * Some hardware wants to get fixmapped without caching.
 */
#define set_fixmap_nocache(idx, phys) \
	__set_fixmap(idx, phys, FIXMAP_PAGE_NOCACHE)

#define set_fixmap_offset_nocache(idx, phys) \
	__set_fixmap_offset(idx, phys, FIXMAP_PAGE_NOCACHE)

/*
 * Some fixmaps are for IO
 */
#define set_fixmap_io(idx, phys) \
	__set_fixmap(idx, phys, FIXMAP_PAGE_IO)

#define set_fixmap_offset_io(idx, phys) \
	__set_fixmap_offset(idx, phys, FIXMAP_PAGE_IO)

#endif /* __ASSEMBLY__ */
#endif /* __ASM_GENERIC_FIXMAP_H */
tion 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>Maya Erez &lt;qca_merez@qca.qualcomm.com&gt;</td><td class='right'>2016-11-28 13:49:01 +0200</td></tr>
<tr><th>committer</th><td>Kalle Valo &lt;kvalo@qca.qualcomm.com&gt;</td><td class='right'>2016-12-01 13:20:31 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=1db226ffe1c2ab900cffb1d71f042e565f77775d'>1db226ffe1c2ab900cffb1d71f042e565f77775d</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=1db226ffe1c2ab900cffb1d71f042e565f77775d'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=1db226ffe1c2ab900cffb1d71f042e565f77775d'>6c8ff295e6baff3146b4d740ed8bab5b9603f864</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=bb6743f7c2ffc467002dfe24bea5dedc96c7da04'>bb6743f7c2ffc467002dfe24bea5dedc96c7da04</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=1db226ffe1c2ab900cffb1d71f042e565f77775d&amp;id2=bb6743f7c2ffc467002dfe24bea5dedc96c7da04'>diff</a>)</td></tr></table>
<div class='commit-subject'>wil6210: validate wil_pmc_alloc parameters</div><div class='commit-msg'>num_descriptors and descriptor_size needs to be
checked for:
1) not being negative values
2) no overflow occurs when these are multiplied
together as done in wil_pmc_read.
An overflow of two signed integers is undefined
behavior.

Signed-off-by: Maya Erez &lt;qca_merez@qca.qualcomm.com&gt;
Signed-off-by: Kalle Valo &lt;kvalo@qca.qualcomm.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=1db226ffe1c2ab900cffb1d71f042e565f77775d'>Diffstat</a></div><table summary='diffstat' class='diffstat'>