ARC: Cache: Remove per-line I$ operations as unused

__cache_line_loop() function was copied from Linux kernel
where per-line instruction cache operations are really used.

In U-Boot we use only entire I$ ops, so we can drop support of
per-line I$ ops from __cache_line_loop() because __cache_line_loop()
is never called with OP_INV_IC parameter.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

diff --git a/arch/arc/lib/cache.c b/arch/arc/lib/cache.c
index 26f0a1ff9bb97be18aaf722b40614b60ca36c358..2252542f16c7bc8ba4f8fcbc3a7c791d65f1fa48 100644 (file)
--- a/arch/arc/lib/cache.c
+++ b/arch/arc/lib/cache.c
@@ -23,7 +23,6 @@
 
 #define OP_INV         0x1
 #define OP_FLUSH       0x2
-#define OP_INV_IC      0x3
 
 /* Bit val in SLC_CONTROL */
 #define SLC_CTRL_DIS           0x001
@@ -373,30 +372,15 @@ void dcache_disable(void)
 }
 
 #ifndef CONFIG_SYS_DCACHE_OFF
-/*
- * Common Helper for Line Operations on {I,D}-Cache
- */
-static inline void __cache_line_loop(unsigned long paddr, unsigned long sz,
-                                    const int cacheop)
+/* Common Helper for Line Operations on D-cache */
+static inline void __dcache_line_loop(unsigned long paddr, unsigned long sz,
+                                     const int cacheop)
 {
        unsigned int aux_cmd;
-#if (CONFIG_ARC_MMU_VER == 3)
-       unsigned int aux_tag;
-#endif
        int num_lines;
 
-       if (cacheop == OP_INV_IC) {
-               aux_cmd = ARC_AUX_IC_IVIL;
-#if (CONFIG_ARC_MMU_VER == 3)
-               aux_tag = ARC_AUX_IC_PTAG;
-#endif
-       } else {
-               /* d$ cmd: INV (discard or wback-n-discard) OR FLUSH (wback) */
-               aux_cmd = cacheop & OP_INV ? ARC_AUX_DC_IVDL : ARC_AUX_DC_FLDL;
-#if (CONFIG_ARC_MMU_VER == 3)
-               aux_tag = ARC_AUX_DC_PTAG;
-#endif
-       }
+       /* d$ cmd: INV (discard or wback-n-discard) OR FLUSH (wback) */
+       aux_cmd = cacheop & OP_INV ? ARC_AUX_DC_IVDL : ARC_AUX_DC_FLDL;
 
        sz += paddr & ~CACHE_LINE_MASK;
        paddr &= CACHE_LINE_MASK;
@@ -405,7 +389,7 @@ static inline void __cache_line_loop(unsigned long paddr, unsigned long sz,
 
        while (num_lines-- > 0) {
 #if (CONFIG_ARC_MMU_VER == 3)
-               write_aux_reg(aux_tag, paddr);
+               write_aux_reg(ARC_AUX_DC_PTAG, paddr);
 #endif
                write_aux_reg(aux_cmd, paddr);
                paddr += l1_line_sz;
@@ -458,7 +442,7 @@ static inline void __dc_line_op(unsigned long paddr, unsigned long sz,
 {
        unsigned int ctrl_reg = __before_dc_op(cacheop);
 
-       __cache_line_loop(paddr, sz, cacheop);
+       __dcache_line_loop(paddr, sz, cacheop);
        __after_dc_op(cacheop, ctrl_reg);
 }
 #else