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38 lines
906 B
38 lines
906 B
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2017 ARM Ltd. |
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*/ |
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#include <linux/uaccess.h> |
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#include <asm/barrier.h> |
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#include <asm/cacheflush.h> |
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void memcpy_flushcache(void *dst, const void *src, size_t cnt) |
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{ |
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/* |
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* We assume this should not be called with @dst pointing to |
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* non-cacheable memory, such that we don't need an explicit |
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* barrier to order the cache maintenance against the memcpy. |
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*/ |
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memcpy(dst, src, cnt); |
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__clean_dcache_area_pop(dst, cnt); |
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} |
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EXPORT_SYMBOL_GPL(memcpy_flushcache); |
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void memcpy_page_flushcache(char *to, struct page *page, size_t offset, |
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size_t len) |
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{ |
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memcpy_flushcache(to, page_address(page) + offset, len); |
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} |
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unsigned long __copy_user_flushcache(void *to, const void __user *from, |
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unsigned long n) |
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{ |
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unsigned long rc; |
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rc = raw_copy_from_user(to, from, n); |
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/* See above */ |
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__clean_dcache_area_pop(to, n - rc); |
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return rc; |
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}
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