As we are planning to get rid of dozens of ifdef's in cache.c we
would better check dcache status before each entire/line operation
then check CONFIG_SYS_DCACHE_OFF config option.
This makes the code clear.
Another advantage is that the dcache entire/line functions
remain functional even if we enable dcache in runtime.
As we need to check status before *each* function call and we
dcache entire/line functions from different places we add
this check directly into dcache entire/line functions instead of
their callers to avoid code duplication.
Signed-off-by: Eugeniy Paltsev <eugeniy.palt...@synopsys.com>
---
arch/arc/lib/cache.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/arch/arc/lib/cache.c b/arch/arc/lib/cache.c
index a743063..f566528 100644
--- a/arch/arc/lib/cache.c
+++ b/arch/arc/lib/cache.c
@@ -324,7 +324,6 @@ void dcache_disable(void)
DC_CTRL_CACHE_DISABLE);
}
-#ifndef CONFIG_SYS_DCACHE_OFF
/* Common Helper for Line Operations on D-cache */
static inline void __dcache_line_loop(unsigned long paddr, unsigned long sz,
const int cacheop)
@@ -374,6 +373,9 @@ static inline void __dc_entire_op(const int cacheop)
{
int aux;
+ if (!dcache_status())
+ return;
+
__before_dc_op(cacheop);
if (cacheop & OP_INV) /* Inv or flush-n-inv use same cmd reg */
@@ -389,14 +391,13 @@ static inline void __dc_entire_op(const int cacheop)
static inline void __dc_line_op(unsigned long paddr, unsigned long sz,
const int cacheop)
{
+ if (!dcache_status())
+ return;
+
__before_dc_op(cacheop);
__dcache_line_loop(paddr, sz, cacheop);
__after_dc_op(cacheop);
}
-#else
-#define __dc_entire_op(cacheop)
-#define __dc_line_op(paddr, sz, cacheop)
-#endif /* !CONFIG_SYS_DCACHE_OFF */
void invalidate_dcache_range(unsigned long start, unsigned long end)
{
--
2.9.3
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