LXR linux/arch/csky/abiv1/inc/abi/cacheflush.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
   3
   4#ifndef __ABI_CSKY_CACHEFLUSH_H
   5#define __ABI_CSKY_CACHEFLUSH_H
   6
   7#include <linux/mm.h>
   8#include <asm/string.h>
   9#include <asm/cache.h>
  10
  11#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
  12extern void flush_dcache_page(struct page *);
  13
  14#define flush_cache_mm(mm)                      dcache_wbinv_all()
  15#define flush_cache_page(vma, page, pfn)        cache_wbinv_all()
  16#define flush_cache_dup_mm(mm)                  cache_wbinv_all()
  17
  18#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
  19extern void flush_kernel_dcache_page(struct page *);
  20
  21#define flush_dcache_mmap_lock(mapping)         xa_lock_irq(&mapping->i_pages)
  22#define flush_dcache_mmap_unlock(mapping)       xa_unlock_irq(&mapping->i_pages)
  23
  24static inline void flush_kernel_vmap_range(void *addr, int size)
  25{
  26        dcache_wbinv_all();
  27}
  28static inline void invalidate_kernel_vmap_range(void *addr, int size)
  29{
  30        dcache_wbinv_all();
  31}
  32
  33#define ARCH_HAS_FLUSH_ANON_PAGE
  34static inline void flush_anon_page(struct vm_area_struct *vma,
  35                         struct page *page, unsigned long vmaddr)
  36{
  37        if (PageAnon(page))
  38                cache_wbinv_all();
  39}
  40
  41/*
  42 * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken.
  43 * Use cache_wbinv_all() here and need to be improved in future.
  44 */
  45extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
  46#define flush_cache_vmap(start, end)            cache_wbinv_all()
  47#define flush_cache_vunmap(start, end)          cache_wbinv_all()
  48
  49#define flush_icache_page(vma, page)            do {} while (0);
  50#define flush_icache_range(start, end)          cache_wbinv_range(start, end)
  51#define flush_icache_mm_range(mm, start, end)   cache_wbinv_range(start, end)
  52#define flush_icache_deferred(mm)               do {} while (0);
  53
  54#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  55do { \
  56        memcpy(dst, src, len); \
  57} while (0)
  58
  59#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  60do { \
  61        memcpy(dst, src, len); \
  62        cache_wbinv_all(); \
  63} while (0)
  64
  65#endif /* __ABI_CSKY_CACHEFLUSH_H */
  66