Blackfin arch: SMP supporting patchset: Blackfin header files and machine common code
Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like
In this patch, we provide SMP extend to Blackfin header files
and machine common code
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
diff --git a/arch/blackfin/include/asm/cacheflush.h b/arch/blackfin/include/asm/cacheflush.h
index 4403415..1b040f5 100644
--- a/arch/blackfin/include/asm/cacheflush.h
+++ b/arch/blackfin/include/asm/cacheflush.h
@@ -35,6 +35,7 @@
extern void blackfin_dcache_flush_range(unsigned long start_address, unsigned long end_address);
extern void blackfin_dcache_invalidate_range(unsigned long start_address, unsigned long end_address);
extern void blackfin_dflush_page(void *page);
+extern void blackfin_invalidate_entire_dcache(void);
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
@@ -44,12 +45,20 @@
#define flush_cache_vmap(start, end) do { } while (0)
#define flush_cache_vunmap(start, end) do { } while (0)
+#ifdef CONFIG_SMP
+#define flush_icache_range_others(start, end) \
+ smp_icache_flush_range_others((start), (end))
+#else
+#define flush_icache_range_others(start, end) do { } while (0)
+#endif
+
static inline void flush_icache_range(unsigned start, unsigned end)
{
#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_ICACHE)
# if defined(CONFIG_BFIN_WT)
blackfin_icache_flush_range((start), (end));
+ flush_icache_range_others(start, end);
# else
blackfin_icache_dcache_flush_range((start), (end));
# endif
@@ -58,6 +67,7 @@
# if defined(CONFIG_BFIN_ICACHE)
blackfin_icache_flush_range((start), (end));
+ flush_icache_range_others(start, end);
# endif
# if defined(CONFIG_BFIN_DCACHE)
blackfin_dcache_flush_range((start), (end));
@@ -66,10 +76,12 @@
#endif
}
-#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
-do { memcpy(dst, src, len); \
- flush_icache_range ((unsigned) (dst), (unsigned) (dst) + (len)); \
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+do { memcpy(dst, src, len); \
+ flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \
+ flush_icache_range_others((unsigned long) (dst), (unsigned long) (dst) + (len));\
} while (0)
+
#define copy_from_user_page(vma, page, vaddr, dst, src, len) memcpy(dst, src, len)
#if defined(CONFIG_BFIN_DCACHE)
@@ -82,7 +94,7 @@
# define flush_dcache_page(page) blackfin_dflush_page(page_address(page))
#else
# define flush_dcache_range(start,end) do { } while (0)
-# define flush_dcache_page(page) do { } while (0)
+# define flush_dcache_page(page) do { } while (0)
#endif
extern unsigned long reserved_mem_dcache_on;