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| /* SPDX-License-Identifier: GPL-2.0 */
| // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
|
| #include <asm/shmparam.h>
|
| extern void flush_dcache_page(struct page *page);
|
| static inline unsigned long pages_do_alias(unsigned long addr1,
| unsigned long addr2)
| {
| return (addr1 ^ addr2) & (SHMLBA-1);
| }
|
| static inline void clear_user_page(void *addr, unsigned long vaddr,
| struct page *page)
| {
| clear_page(addr);
| if (pages_do_alias((unsigned long) addr, vaddr & PAGE_MASK))
| flush_dcache_page(page);
| }
|
| static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
| struct page *page)
| {
| copy_page(to, from);
| if (pages_do_alias((unsigned long) to, vaddr & PAGE_MASK))
| flush_dcache_page(page);
| }
|
|
