Blackfin: decouple unrelated cache settings to get exact behavior

The current cache options don't really represent the hardware features.
They end up setting different aspects of the hardware so that the end
result is to turn on/off the cache.  Unfortunately, when we hit cache
problems with the hardware, it's difficult to test different settings to
root cause the problem.  The current settings also don't cleanly allow for
different caching behaviors with different regions of memory.

So split the configure options such that they properly reflect the settings
that are applied to the hardware.

Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/arch/blackfin/include/asm/cacheflush.h b/arch/blackfin/include/asm/cacheflush.h
index 5c17dee53b5d..7e55549e180f 100644
--- a/arch/blackfin/include/asm/cacheflush.h
+++ b/arch/blackfin/include/asm/cacheflush.h
@@ -56,7 +56,7 @@ extern void blackfin_invalidate_entire_icache(void);
 
 static inline void flush_icache_range(unsigned start, unsigned end)
 {
-#if defined(CONFIG_BFIN_WB)
+#if defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK)
         blackfin_dcache_flush_range(start, end);
 #endif
 
@@ -87,9 +87,9 @@ do { memcpy(dst, src, len);						\
 #else
 # define invalidate_dcache_range(start,end)     do { } while (0)
 #endif
-#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_WB)
+#if defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK)
 # define flush_dcache_range(start,end)          blackfin_dcache_flush_range((start), (end))
-# define flush_dcache_page(page)                        blackfin_dflush_page(page_address(page))
+# 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)
@@ -100,7 +100,7 @@ extern unsigned long reserved_mem_icache_on;
 
 static inline int bfin_addr_dcacheable(unsigned long addr)
 {
-#ifdef CONFIG_BFIN_DCACHE
+#ifdef CONFIG_BFIN_EXTMEM_DCACHEABLE
         if (addr < (_ramend - DMA_UNCACHED_REGION))
                 return 1;
 #endif
@@ -109,7 +109,7 @@ static inline int bfin_addr_dcacheable(unsigned long addr)
                 addr >= _ramend && addr < physical_mem_end)
                 return 1;
 
-#ifndef CONFIG_BFIN_L2_NOT_CACHED
+#ifdef CONFIG_BFIN_L2_DCACHEABLE
         if (addr >= L2_START && addr < L2_START + L2_LENGTH)
                 return 1;
 #endif