diff options
Diffstat (limited to 'arch/openrisc/include/asm/cacheflush.h')
| -rw-r--r-- | arch/openrisc/include/asm/cacheflush.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/arch/openrisc/include/asm/cacheflush.h b/arch/openrisc/include/asm/cacheflush.h index eeac40d4a854..cd8f971c0fec 100644 --- a/arch/openrisc/include/asm/cacheflush.h +++ b/arch/openrisc/include/asm/cacheflush.h @@ -23,6 +23,9 @@ */ extern void local_dcache_page_flush(struct page *page); extern void local_icache_page_inv(struct page *page); +extern void local_dcache_range_flush(unsigned long start, unsigned long end); +extern void local_dcache_range_inv(unsigned long start, unsigned long end); +extern void local_icache_range_inv(unsigned long start, unsigned long end); /* * Data cache flushing always happen on the local cpu. Instruction cache @@ -39,6 +42,20 @@ extern void smp_icache_page_inv(struct page *page); #endif /* CONFIG_SMP */ /* + * Even if the actual block size is larger than L1_CACHE_BYTES, paddr + * can be incremented by L1_CACHE_BYTES. When paddr is written to the + * invalidate register, the entire cache line encompassing this address + * is invalidated. Each subsequent reference to the same cache line will + * not affect the invalidation process. + */ +#define local_dcache_block_flush(addr) \ + local_dcache_range_flush(addr, addr + L1_CACHE_BYTES) +#define local_dcache_block_inv(addr) \ + local_dcache_range_inv(addr, addr + L1_CACHE_BYTES) +#define local_icache_block_inv(addr) \ + local_icache_range_inv(addr, addr + L1_CACHE_BYTES) + +/* * Synchronizes caches. Whenever a cpu writes executable code to memory, this * should be called to make sure the processor sees the newly written code. */ @@ -56,10 +73,16 @@ static inline void sync_icache_dcache(struct page *page) */ #define PG_dc_clean PG_arch_1 +static inline void flush_dcache_folio(struct folio *folio) +{ + clear_bit(PG_dc_clean, &folio->flags.f); +} +#define flush_dcache_folio flush_dcache_folio + #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 static inline void flush_dcache_page(struct page *page) { - clear_bit(PG_dc_clean, &page->flags); + flush_dcache_folio(page_folio(page)); } #define flush_icache_user_page(vma, page, addr, len) \ |