125 строки
2.5 KiB
C
125 строки
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_GENERIC_CACHEFLUSH_H
|
|
#define _ASM_GENERIC_CACHEFLUSH_H
|
|
|
|
struct mm_struct;
|
|
struct vm_area_struct;
|
|
struct page;
|
|
struct address_space;
|
|
|
|
/*
|
|
* The cache doesn't need to be flushed when TLB entries change when
|
|
* the cache is mapped to physical memory, not virtual memory
|
|
*/
|
|
#ifndef flush_cache_all
|
|
static inline void flush_cache_all(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_mm
|
|
static inline void flush_cache_mm(struct mm_struct *mm)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_dup_mm
|
|
static inline void flush_cache_dup_mm(struct mm_struct *mm)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_range
|
|
static inline void flush_cache_range(struct vm_area_struct *vma,
|
|
unsigned long start,
|
|
unsigned long end)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_page
|
|
static inline void flush_cache_page(struct vm_area_struct *vma,
|
|
unsigned long vmaddr,
|
|
unsigned long pfn)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
|
|
static inline void flush_dcache_page(struct page *page)
|
|
{
|
|
}
|
|
|
|
static inline void flush_dcache_folio(struct folio *folio) { }
|
|
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
|
|
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO
|
|
#endif
|
|
|
|
#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO
|
|
void flush_dcache_folio(struct folio *folio);
|
|
#endif
|
|
|
|
#ifndef flush_dcache_mmap_lock
|
|
static inline void flush_dcache_mmap_lock(struct address_space *mapping)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_dcache_mmap_unlock
|
|
static inline void flush_dcache_mmap_unlock(struct address_space *mapping)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_icache_range
|
|
static inline void flush_icache_range(unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_icache_user_range
|
|
#define flush_icache_user_range flush_icache_range
|
|
#endif
|
|
|
|
#ifndef flush_icache_page
|
|
static inline void flush_icache_page(struct vm_area_struct *vma,
|
|
struct page *page)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_icache_user_page
|
|
static inline void flush_icache_user_page(struct vm_area_struct *vma,
|
|
struct page *page,
|
|
unsigned long addr, int len)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_vmap
|
|
static inline void flush_cache_vmap(unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef flush_cache_vunmap
|
|
static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef copy_to_user_page
|
|
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
|
|
do { \
|
|
memcpy(dst, src, len); \
|
|
flush_icache_user_page(vma, page, vaddr, len); \
|
|
} while (0)
|
|
#endif
|
|
|
|
#ifndef copy_from_user_page
|
|
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
|
|
memcpy(dst, src, len)
|
|
#endif
|
|
|
|
#endif /* _ASM_GENERIC_CACHEFLUSH_H */
|