[U-Boot] [PATCH v2 15/20] ARC: cache: implement [i, d]cache_enabled as separate functions

[Eugeniy Paltsev]

Implement icache_enabled and dcache_enabled as separate functions
which can be used with inline attribute. This is preparation to
make them always_inline.

Signed-off-by: Eugeniy Paltsev <eugeniy.palt...@synopsys.com>
---
 arch/arc/lib/cache.c | 38 +++++++++++++++++++++-----------------
 1 file changed, 21 insertions(+), 17 deletions(-)

diff --git a/arch/arc/lib/cache.c b/arch/arc/lib/cache.c
index ad14900135..7052895bb7 100644
--- a/arch/arc/lib/cache.c
+++ b/arch/arc/lib/cache.c
@@ -132,6 +132,14 @@ static inline bool icache_exists(void)
        return !!ibcr.fields.ver;
 }
 
+static inline bool icache_enabled(void)
+{
+       if (!icache_exists())
+               return false;
+
+       return !(read_aux_reg(ARC_AUX_IC_CTRL) & IC_CTRL_CACHE_DISABLE);
+}
+
 static inline bool dcache_exists(void)
 {
        union bcr_di_cache dbcr;
@@ -140,6 +148,14 @@ static inline bool dcache_exists(void)
        return !!dbcr.fields.ver;
 }
 
+static inline bool dcache_enabled(void)
+{
+       if (!dcache_exists())
+               return false;
+
+       return !(read_aux_reg(ARC_AUX_DC_CTRL) & DC_CTRL_CACHE_DISABLE);
+}
+
 static inline bool slc_exists(void)
 {
        if (is_isa_arcv2()) {
@@ -357,13 +373,7 @@ void cache_init(void)
 
 int icache_status(void)
 {
-       if (!icache_exists())
-               return 0;
-
-       if (read_aux_reg(ARC_AUX_IC_CTRL) & IC_CTRL_CACHE_DISABLE)
-               return 0;
-       else
-               return 1;
+       return icache_enabled();
 }
 
 void icache_enable(void)
@@ -383,7 +393,7 @@ void icache_disable(void)
 /* IC supports only invalidation */
 static inline void __ic_entire_invalidate(void)
 {
-       if (!icache_status())
+       if (!icache_enabled())
                return;
 
        /* Any write to IC_IVIC register triggers invalidation of entire I$ */
@@ -408,13 +418,7 @@ void invalidate_icache_all(void)
 
 int dcache_status(void)
 {
-       if (!dcache_exists())
-               return 0;
-
-       if (read_aux_reg(ARC_AUX_DC_CTRL) & DC_CTRL_CACHE_DISABLE)
-               return 0;
-       else
-               return 1;
+       return dcache_enabled();
 }
 
 void dcache_enable(void)
@@ -484,7 +488,7 @@ static inline void __dc_entire_op(const int cacheop)
 {
        int aux;
 
-       if (!dcache_status())
+       if (!dcache_enabled())
                return;
 
        __before_dc_op(cacheop);
@@ -502,7 +506,7 @@ 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())
+       if (!dcache_enabled())
                return;
 
        __before_dc_op(cacheop);
-- 
2.14.3

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