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.Paltsev@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) {