linux/arch/csky/abiv1/inc/abi/cacheflush.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2
   3#ifndef __ABI_CSKY_CACHEFLUSH_H
   4#define __ABI_CSKY_CACHEFLUSH_H
   5
   6#include <linux/mm.h>
   7#include <asm/string.h>
   8#include <asm/cache.h>
   9
  10#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
  11extern void flush_dcache_page(struct page *);
  12
  13#define flush_cache_mm(mm)                      dcache_wbinv_all()
  14#define flush_cache_page(vma, page, pfn)        cache_wbinv_all()
  15#define flush_cache_dup_mm(mm)                  cache_wbinv_all()
  16
  17#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
  18extern void flush_kernel_dcache_page(struct page *);
  19
  20#define flush_dcache_mmap_lock(mapping)         xa_lock_irq(&mapping->i_pages)
  21#define flush_dcache_mmap_unlock(mapping)       xa_unlock_irq(&mapping->i_pages)
  22
  23static inline void flush_kernel_vmap_range(void *addr, int size)
  24{
  25        dcache_wbinv_all();
  26}
  27static inline void invalidate_kernel_vmap_range(void *addr, int size)
  28{
  29        dcache_wbinv_all();
  30}
  31
  32#define ARCH_HAS_FLUSH_ANON_PAGE
  33static inline void flush_anon_page(struct vm_area_struct *vma,
  34                         struct page *page, unsigned long vmaddr)
  35{
  36        if (PageAnon(page))
  37                cache_wbinv_all();
  38}
  39
  40/*
  41 * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken.
  42 * Use cache_wbinv_all() here and need to be improved in future.
  43 */
  44extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
  45#define flush_cache_vmap(start, end)            cache_wbinv_all()
  46#define flush_cache_vunmap(start, end)          cache_wbinv_all()
  47
  48#define flush_icache_page(vma, page)            do {} while (0);
  49#define flush_icache_range(start, end)          cache_wbinv_range(start, end)
  50#define flush_icache_mm_range(mm, start, end)   cache_wbinv_range(start, end)
  51#define flush_icache_deferred(mm)               do {} while (0);
  52
  53#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  54do { \
  55        memcpy(dst, src, len); \
  56} while (0)
  57
  58#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  59do { \
  60        memcpy(dst, src, len); \
  61        cache_wbinv_all(); \
  62} while (0)
  63
  64#endif /* __ABI_CSKY_CACHEFLUSH_H */
  65