[MIPS] Tidy up cache attributes

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

include/asm-mips/pgtable-bits.h

@@ -47,15 +47,9 @@
 #define _PAGE_SILENT_READ           (1<<1)  /* synonym                 */
 #define _PAGE_DIRTY                 (1<<2)  /* The MIPS dirty bit      */
 #define _PAGE_SILENT_WRITE          (1<<2)
+#define _CACHE_SHIFT                3
 #define _CACHE_MASK                 (7<<3)
 
-/* MIPS32 defines only values 2 and 3. The rest are implementation
- * dependent.
- */
-#define _CACHE_UNCACHED             (2<<3)
-#define _CACHE_CACHABLE_NONCOHERENT (3<<3)
-#define _CACHE_CACHABLE_COW         (3<<3)  /* Au1x                    */
-
 #else
 
 #define _PAGE_PRESENT               (1<<0)  /* implemented in software */
@@ -74,55 +68,66 @@
 #define _PAGE_SILENT_WRITE          (1<<10)
 #define _CACHE_UNCACHED             (1<<11)
 #define _CACHE_MASK                 (1<<11)
-#define _CACHE_CACHABLE_NONCOHERENT 0
 
 #else
+
 #define _PAGE_R4KBUG                (1<<5)  /* workaround for r4k bug  */
 #define _PAGE_GLOBAL                (1<<6)
 #define _PAGE_VALID                 (1<<7)
 #define _PAGE_SILENT_READ           (1<<7)  /* synonym                 */
 #define _PAGE_DIRTY                 (1<<8)  /* The MIPS dirty bit      */
 #define _PAGE_SILENT_WRITE          (1<<8)
+#define _CACHE_SHIFT		    9
 #define _CACHE_MASK                 (7<<9)
 
-#ifdef CONFIG_CPU_SB1
+#endif
+#endif /* defined(CONFIG_64BIT_PHYS_ADDR && defined(CONFIG_CPU_MIPS32) */
+
+
+/*
+ * Cache attributes
+ */
+#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
+
+#define _CACHE_CACHABLE_NONCOHERENT 0
+
+#elif defined(CONFIG_CPU_SB1)
 
 /* No penalty for being coherent on the SB1, so just
    use it for "noncoherent" spaces, too.  Shouldn't hurt. */
 
-#define _CACHE_UNCACHED             (2<<9)
-#define _CACHE_CACHABLE_COW         (5<<9)
-#define _CACHE_CACHABLE_NONCOHERENT (5<<9)
-#define _CACHE_UNCACHED_ACCELERATED (7<<9)
+#define _CACHE_UNCACHED             (2<<_CACHE_SHIFT)
+#define _CACHE_CACHABLE_COW         (5<<_CACHE_SHIFT)
+#define _CACHE_CACHABLE_NONCOHERENT (5<<_CACHE_SHIFT)
+#define _CACHE_UNCACHED_ACCELERATED (7<<_CACHE_SHIFT)
 
 #elif defined(CONFIG_CPU_RM9000)
 
-#define _CACHE_WT			(0 << 9)
-#define _CACHE_WTWA			(1 << 9)
-#define _CACHE_UC_B			(2 << 9)
-#define _CACHE_WB			(3 << 9)
-#define _CACHE_CWBEA			(4 << 9)
-#define _CACHE_CWB			(5 << 9)
-#define _CACHE_UCNB			(6 << 9)
-#define _CACHE_FPC			(7 << 9)
+#define _CACHE_WT		    (0<<_CACHE_SHIFT)
+#define _CACHE_WTWA		    (1<<_CACHE_SHIFT)
+#define _CACHE_UC_B		    (2<<_CACHE_SHIFT)
+#define _CACHE_WB		    (3<<_CACHE_SHIFT)
+#define _CACHE_CWBEA		    (4<<_CACHE_SHIFT)
+#define _CACHE_CWB		    (5<<_CACHE_SHIFT)
+#define _CACHE_UCNB		    (6<<_CACHE_SHIFT)
+#define _CACHE_FPC		    (7<<_CACHE_SHIFT)
 
 #define _CACHE_UNCACHED		    _CACHE_UC_B
 #define _CACHE_CACHABLE_NONCOHERENT _CACHE_WB
 
 #else
 
-#define _CACHE_CACHABLE_NO_WA       (0<<9)  /* R4600 only              */
-#define _CACHE_CACHABLE_WA          (1<<9)  /* R4600 only              */
-#define _CACHE_UNCACHED             (2<<9)  /* R4[0246]00              */
-#define _CACHE_CACHABLE_NONCOHERENT (3<<9)  /* R4[0246]00              */
-#define _CACHE_CACHABLE_CE          (4<<9)  /* R4[04]00MC only         */
-#define _CACHE_CACHABLE_COW         (5<<9)  /* R4[04]00MC only         */
-#define _CACHE_CACHABLE_CUW         (6<<9)  /* R4[04]00MC only         */
-#define _CACHE_UNCACHED_ACCELERATED (7<<9)  /* R10000 only             */
+#define _CACHE_CACHABLE_NO_WA	    (0<<_CACHE_SHIFT)  /* R4600 only      */
+#define _CACHE_CACHABLE_WA	    (1<<_CACHE_SHIFT)  /* R4600 only      */
+#define _CACHE_UNCACHED             (2<<_CACHE_SHIFT)  /* R4[0246]00      */
+#define _CACHE_CACHABLE_NONCOHERENT (3<<_CACHE_SHIFT)  /* R4[0246]00      */
+#define _CACHE_CACHABLE_CE          (4<<_CACHE_SHIFT)  /* R4[04]00MC only */
+#define _CACHE_CACHABLE_COW         (5<<_CACHE_SHIFT)  /* R4[04]00MC only */
+#define _CACHE_CACHABLE_COHERENT    (5<<_CACHE_SHIFT)  /* MIPS32R2 CMP    */
+#define _CACHE_CACHABLE_CUW         (6<<_CACHE_SHIFT)  /* R4[04]00MC only */
+#define _CACHE_UNCACHED_ACCELERATED (7<<_CACHE_SHIFT)  /* R10000 only     */
 
 #endif
-#endif
-#endif /* defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) */
 
 #define __READABLE	(_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED)
 #define __WRITEABLE	(_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED)
@@ -135,14 +140,12 @@
 #define PAGE_CACHABLE_DEFAULT	_CACHE_CACHABLE_NONCOHERENT
 #elif defined(CONFIG_CPU_RM9000)
 #define PAGE_CACHABLE_DEFAULT	_CACHE_CWB
+#elif defined(CONFIG_SOC_AU1X00)
+#define PAGE_CACHABLE_DEFAULT	_CACHE_CACHABLE_NONCOHERENT
 #else
 #define PAGE_CACHABLE_DEFAULT	_CACHE_CACHABLE_COW
 #endif
 
-#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32)
-#define CONF_CM_DEFAULT		(PAGE_CACHABLE_DEFAULT >> 3)
-#else
-#define CONF_CM_DEFAULT		(PAGE_CACHABLE_DEFAULT >> 9)
-#endif
+#define CONF_CM_DEFAULT		(PAGE_CACHABLE_DEFAULT>>_CACHE_SHIFT)
 
 #endif /* _ASM_PGTABLE_BITS_H */