Release 4.11 arch/sh/mm/uncached.c

#include <linux/init.h>
#include <linux/module.h>
#include <asm/sizes.h>
#include <asm/page.h>
#include <asm/addrspace.h>

/*
 * This is the offset of the uncached section from its cached alias.
 *
 * Legacy platforms handle trivial transitions between cached and
 * uncached segments by making use of the 1:1 mapping relationship in
 * 512MB lowmem, others via a special uncached mapping.
 *
 * Default value only valid in 29 bit mode, in 32bit mode this will be
 * updated by the early PMB initialization code.
 */

unsigned long cached_to_uncached = SZ_512M;

unsigned long uncached_size = SZ_512M;


unsigned long uncached_start, uncached_end;

EXPORT_SYMBOL(uncached_start);

EXPORT_SYMBOL(uncached_end);



int virt_addr_uncached(unsigned long kaddr)
{
	return (kaddr >= uncached_start) && (kaddr < uncached_end);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Paul Mundt
22
100.00%
1
100.00%
Total
22
100.00%
1
100.00%


EXPORT_SYMBOL(virt_addr_uncached);



void __init uncached_init(void)
{
#if defined(CONFIG_29BIT) || !defined(CONFIG_MMU)
	uncached_start = P2SEG;
#else
	uncached_start = memory_end;
#endif
	uncached_end = uncached_start + uncached_size;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Paul Mundt
38
100.00%
3
100.00%
Total
38
100.00%
3
100.00%



void __init uncached_resize(unsigned long size)
{
	uncached_size = size;
	uncached_end = uncached_start + uncached_size;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Paul Mundt
20
100.00%
1
100.00%
Total
20
100.00%
1
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Paul Mundt
129
100.00%
5
100.00%
Total
129
100.00%
5
100.00%
Directory: arch/sh/mm

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.