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>

1 files changed, 16 insertions, 4 deletions

diff --git a/arch/blackfin/include/asm/cacheflush.h b/arch/blackfin/include/asm/cacheflush.h
index 4403415583f..1b040f5b4fe 100644
--- a/arch/blackfin/include/asm/cacheflush.h
+++ b/arch/blackfin/include/asm/cacheflush.h
@@ -35,6 +35,7 @@ extern void blackfin_icache_flush_range(unsigned long start_address, unsigned lo
 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 @@ extern void blackfin_dflush_page(void *page);
 #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 @@ static inline void flush_icache_range(unsigned start, unsigned end)
 
 # 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 @@ static inline void flush_icache_range(unsigned start, unsigned end)
 #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 @@ do { memcpy(dst, src, len); \
 # 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;