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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 | /* Keep includes the same across arches. */ |
| 7 | #include <linux/mm.h> |
| 8 | |
| 9 | /* |
| 10 | * The cache doesn't need to be flushed when TLB entries change when |
| 11 | * the cache is mapped to physical memory, not virtual memory |
| 12 | */ |
| 13 | #define flush_cache_all() do { } while (0) |
| 14 | #define flush_cache_mm(mm) do { } while (0) |
| 15 | #define flush_cache_dup_mm(mm) do { } while (0) |
| 16 | #define flush_cache_range(vma, start, end) do { } while (0) |
| 17 | #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) |
| 18 | |
| 19 | #define PG_dcache_clean PG_arch_1 |
| 20 | |
| 21 | static inline void flush_dcache_folio(struct folio *folio) |
| 22 | { |
| 23 | if (test_bit(PG_dcache_clean, &folio->flags.f)) |
| 24 | clear_bit(PG_dcache_clean, &folio->flags.f); |
| 25 | } |
| 26 | #define flush_dcache_folio flush_dcache_folio |
| 27 | |
| 28 | #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 |
| 29 | static inline void flush_dcache_page(struct page *page) |
| 30 | { |
| 31 | flush_dcache_folio(page_folio(page)); |
| 32 | } |
| 33 | |
| 34 | #define flush_dcache_mmap_lock(mapping) do { } while (0) |
| 35 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) |
| 36 | |
| 37 | #define flush_icache_range(start, end) cache_wbinv_range(start, end) |
| 38 | |
| 39 | void flush_icache_mm_range(struct mm_struct *mm, |
| 40 | unsigned long start, unsigned long end); |
| 41 | void flush_icache_deferred(struct mm_struct *mm); |
| 42 | |
| 43 | #define flush_cache_vmap(start, end) do { } while (0) |
| 44 | #define flush_cache_vmap_early(start, end) do { } while (0) |
| 45 | #define flush_cache_vunmap(start, end) do { } while (0) |
| 46 | |
| 47 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ |
| 48 | do { \ |
| 49 | memcpy(dst, src, len); \ |
| 50 | if (vma->vm_flags & VM_EXEC) { \ |
| 51 | dcache_wb_range((unsigned long)dst, \ |
| 52 | (unsigned long)dst + len); \ |
| 53 | flush_icache_mm_range(current->mm, \ |
| 54 | (unsigned long)dst, \ |
| 55 | (unsigned long)dst + len); \ |
| 56 | } \ |
| 57 | } while (0) |
| 58 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
| 59 | memcpy(dst, src, len) |
| 60 | |
| 61 | #endif /* __ABI_CSKY_CACHEFLUSH_H */ |
| 62 |
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