[MIPS] Add protected_blast_icache_range, blast_icache_range, etc.

    
Add blast_xxx_range(), protected_blast_xxx_range() etc. for common
use.  They are built by __BUILD_BLAST_CACHE_RANGE().
Use protected_cache_op() macro for various protected_ routines.
Output code should be logically same.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 41 insertions, 33 deletions

diff --git a/include/asm-mips/r4kcache.h b/include/asm-mips/r4kcache.h
index cc53196efa40..9632c27dad15 100644
--- a/include/asm-mips/r4kcache.h
+++ b/include/asm-mips/r4kcache.h
@@ -14,6 +14,7 @@
 
 #include <asm/asm.h>
 #include <asm/cacheops.h>
+#include <asm/cpu-features.h>
 
 /*
  * This macro return a properly sign-extended address suitable as base address
@@ -78,22 +79,25 @@ static inline void flush_scache_line(unsigned long addr)
         cache_op(Hit_Writeback_Inv_SD, addr);
 }
 
+#define protected_cache_op(op,addr)                             \
+        __asm__ __volatile__(                                   \
+        "       .set    push                    \n"             \
+        "       .set    noreorder               \n"             \
+        "       .set    mips3                   \n"             \
+        "1:     cache   %0, (%1)                \n"             \
+        "2:     .set    pop                     \n"             \
+        "       .section __ex_table,\"a\"       \n"             \
+        "       "STR(PTR)" 1b, 2b               \n"             \
+        "       .previous"                                      \
+        :                                                       \
+        : "i" (op), "r" (addr))
+
 /*
  * The next two are for badland addresses like signal trampolines.
  */
 static inline void protected_flush_icache_line(unsigned long addr)
 {
-        __asm__ __volatile__(
-                "       .set    push                    \n"
-                "       .set    noreorder               \n"
-                "       .set    mips3                   \n"
-                "1:     cache   %0, (%1)                \n"
-                "2:     .set    pop                     \n"
-                "       .section __ex_table,\"a\"       \n"
-                "       "STR(PTR)" 1b, 2b               \n"
-                "       .previous"
-                :
-                : "i" (Hit_Invalidate_I), "r" (addr));
+        protected_cache_op(Hit_Invalidate_I, addr);
 }
 
 /*
@@ -104,32 +108,12 @@ static inline void protected_flush_icache_line(unsigned long addr)
  */
 static inline void protected_writeback_dcache_line(unsigned long addr)
 {
-        __asm__ __volatile__(
-                "       .set    push                    \n"
-                "       .set    noreorder               \n"
-                "       .set    mips3                   \n"
-                "1:     cache   %0, (%1)                \n"
-                "2:     .set    pop                     \n"
-                "       .section __ex_table,\"a\"       \n"
-                "       "STR(PTR)" 1b, 2b               \n"
-                "       .previous"
-                :
-                : "i" (Hit_Writeback_Inv_D), "r" (addr));
+        protected_cache_op(Hit_Writeback_Inv_D, addr);
 }
 
 static inline void protected_writeback_scache_line(unsigned long addr)
 {
-        __asm__ __volatile__(
-                "       .set    push                    \n"
-                "       .set    noreorder               \n"
-                "       .set    mips3                   \n"
-                "1:     cache   %0, (%1)                \n"
-                "2:     .set    pop                     \n"
-                "       .section __ex_table,\"a\"       \n"
-                "       "STR(PTR)" 1b, 2b               \n"
-                "       .previous"
-                :
-                : "i" (Hit_Writeback_Inv_SD), "r" (addr));
+        protected_cache_op(Hit_Writeback_Inv_SD, addr);
 }
 
 /*
@@ -295,4 +279,28 @@ __BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
 __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64)
 __BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128)
 
+/* build blast_xxx_range, protected_blast_xxx_range */
+#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot) \
+static inline void prot##blast_##pfx##cache##_range(unsigned long start, \
+                                                    unsigned long end)  \
+{                                                                       \
+        unsigned long lsize = cpu_##desc##_line_size();                 \
+        unsigned long addr = start & ~(lsize - 1);                      \
+        unsigned long aend = (end - 1) & ~(lsize - 1);                  \
+        while (1) {                                                     \
+                prot##cache_op(hitop, addr);                            \
+                if (addr == aend)                                       \
+                        break;                                          \
+                addr += lsize;                                          \
+        }                                                               \
+}
+
+__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_)
+__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_)
+__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_)
+__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, )
+__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, )
+/* blast_inv_dcache_range */
+__BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, )
+
 #endif /* _ASM_R4KCACHE_H */