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/*
* Copyright(c) 2017 IBM Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include <linux/string.h>
#include <linux/export.h>
#include <linux/uaccess.h>
#include <asm/cacheflush.h>
/*
* CONFIG_ARCH_HAS_PMEM_API symbols
*/
void arch_wb_cache_pmem(void *addr, size_t size)
{
unsigned long start = (unsigned long) addr;
flush_inval_dcache_range(start, start + size);
}
EXPORT_SYMBOL(arch_wb_cache_pmem);
void arch_invalidate_pmem(void *addr, size_t size)
{
unsigned long start = (unsigned long) addr;
flush_inval_dcache_range(start, start + size);
}
EXPORT_SYMBOL(arch_invalidate_pmem);
/*
* CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE symbols
*/
long __copy_from_user_flushcache(void *dest, const void __user *src,
unsigned size)
{
unsigned long copied, start = (unsigned long) dest;
copied = __copy_from_user(dest, src, size);
flush_inval_dcache_range(start, start + size);
return copied;
}
void *memcpy_flushcache(void *dest, const void *src, size_t size)
{
unsigned long start = (unsigned long) dest;
memcpy(dest, src, size);
flush_inval_dcache_range(start, start + size);
return dest;
}
EXPORT_SYMBOL(memcpy_flushcache);
void memcpy_page_flushcache(char *to, struct page *page, size_t offset,
size_t len)
{
memcpy_flushcache(to, page_to_virt(page) + offset, len);
}
EXPORT_SYMBOL(memcpy_page_flushcache);
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