aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--include/asm-mips/pgtable-bits.h81
1 files changed, 42 insertions, 39 deletions
diff --git a/include/asm-mips/pgtable-bits.h b/include/asm-mips/pgtable-bits.h
index d23f19a3240a..728fbe7b9946 100644
--- a/include/asm-mips/pgtable-bits.h
+++ b/include/asm-mips/pgtable-bits.h
@@ -39,7 +39,7 @@
39#define _PAGE_WRITE (1<<8) /* implemented in software */ 39#define _PAGE_WRITE (1<<8) /* implemented in software */
40#define _PAGE_ACCESSED (1<<9) /* implemented in software */ 40#define _PAGE_ACCESSED (1<<9) /* implemented in software */
41#define _PAGE_MODIFIED (1<<10) /* implemented in software */ 41#define _PAGE_MODIFIED (1<<10) /* implemented in software */
42#define _PAGE_FILE (1<<10) /* set:pagecache unset:swap */ 42#define _PAGE_FILE (1<<10) /* set:pagecache unset:swap */
43 43
44#define _PAGE_R4KBUG (1<<0) /* workaround for r4k bug */ 44#define _PAGE_R4KBUG (1<<0) /* workaround for r4k bug */
45#define _PAGE_GLOBAL (1<<0) 45#define _PAGE_GLOBAL (1<<0)
@@ -47,15 +47,9 @@
47#define _PAGE_SILENT_READ (1<<1) /* synonym */ 47#define _PAGE_SILENT_READ (1<<1) /* synonym */
48#define _PAGE_DIRTY (1<<2) /* The MIPS dirty bit */ 48#define _PAGE_DIRTY (1<<2) /* The MIPS dirty bit */
49#define _PAGE_SILENT_WRITE (1<<2) 49#define _PAGE_SILENT_WRITE (1<<2)
50#define _CACHE_SHIFT 3
50#define _CACHE_MASK (7<<3) 51#define _CACHE_MASK (7<<3)
51 52
52/* MIPS32 defines only values 2 and 3. The rest are implementation
53 * dependent.
54 */
55#define _CACHE_UNCACHED (2<<3)
56#define _CACHE_CACHABLE_NONCOHERENT (3<<3)
57#define _CACHE_CACHABLE_COW (3<<3) /* Au1x */
58
59#else 53#else
60 54
61#define _PAGE_PRESENT (1<<0) /* implemented in software */ 55#define _PAGE_PRESENT (1<<0) /* implemented in software */
@@ -74,55 +68,66 @@
74#define _PAGE_SILENT_WRITE (1<<10) 68#define _PAGE_SILENT_WRITE (1<<10)
75#define _CACHE_UNCACHED (1<<11) 69#define _CACHE_UNCACHED (1<<11)
76#define _CACHE_MASK (1<<11) 70#define _CACHE_MASK (1<<11)
77#define _CACHE_CACHABLE_NONCOHERENT 0
78 71
79#else 72#else
73
80#define _PAGE_R4KBUG (1<<5) /* workaround for r4k bug */ 74#define _PAGE_R4KBUG (1<<5) /* workaround for r4k bug */
81#define _PAGE_GLOBAL (1<<6) 75#define _PAGE_GLOBAL (1<<6)
82#define _PAGE_VALID (1<<7) 76#define _PAGE_VALID (1<<7)
83#define _PAGE_SILENT_READ (1<<7) /* synonym */ 77#define _PAGE_SILENT_READ (1<<7) /* synonym */
84#define _PAGE_DIRTY (1<<8) /* The MIPS dirty bit */ 78#define _PAGE_DIRTY (1<<8) /* The MIPS dirty bit */
85#define _PAGE_SILENT_WRITE (1<<8) 79#define _PAGE_SILENT_WRITE (1<<8)
80#define _CACHE_SHIFT 9
86#define _CACHE_MASK (7<<9) 81#define _CACHE_MASK (7<<9)
87 82
88#ifdef CONFIG_CPU_SB1 83#endif
84#endif /* defined(CONFIG_64BIT_PHYS_ADDR && defined(CONFIG_CPU_MIPS32) */
85
86
87/*
88 * Cache attributes
89 */
90#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
91
92#define _CACHE_CACHABLE_NONCOHERENT 0
93
94#elif defined(CONFIG_CPU_SB1)
89 95
90/* No penalty for being coherent on the SB1, so just 96/* No penalty for being coherent on the SB1, so just
91 use it for "noncoherent" spaces, too. Shouldn't hurt. */ 97 use it for "noncoherent" spaces, too. Shouldn't hurt. */
92 98
93#define _CACHE_UNCACHED (2<<9) 99#define _CACHE_UNCACHED (2<<_CACHE_SHIFT)
94#define _CACHE_CACHABLE_COW (5<<9) 100#define _CACHE_CACHABLE_COW (5<<_CACHE_SHIFT)
95#define _CACHE_CACHABLE_NONCOHERENT (5<<9) 101#define _CACHE_CACHABLE_NONCOHERENT (5<<_CACHE_SHIFT)
96#define _CACHE_UNCACHED_ACCELERATED (7<<9) 102#define _CACHE_UNCACHED_ACCELERATED (7<<_CACHE_SHIFT)
97 103
98#elif defined(CONFIG_CPU_RM9000) 104#elif defined(CONFIG_CPU_RM9000)
99 105
100#define _CACHE_WT (0 << 9) 106#define _CACHE_WT (0<<_CACHE_SHIFT)
101#define _CACHE_WTWA (1 << 9) 107#define _CACHE_WTWA (1<<_CACHE_SHIFT)
102#define _CACHE_UC_B (2 << 9) 108#define _CACHE_UC_B (2<<_CACHE_SHIFT)
103#define _CACHE_WB (3 << 9) 109#define _CACHE_WB (3<<_CACHE_SHIFT)
104#define _CACHE_CWBEA (4 << 9) 110#define _CACHE_CWBEA (4<<_CACHE_SHIFT)
105#define _CACHE_CWB (5 << 9) 111#define _CACHE_CWB (5<<_CACHE_SHIFT)
106#define _CACHE_UCNB (6 << 9) 112#define _CACHE_UCNB (6<<_CACHE_SHIFT)
107#define _CACHE_FPC (7 << 9) 113#define _CACHE_FPC (7<<_CACHE_SHIFT)
108 114
109#define _CACHE_UNCACHED _CACHE_UC_B 115#define _CACHE_UNCACHED _CACHE_UC_B
110#define _CACHE_CACHABLE_NONCOHERENT _CACHE_WB 116#define _CACHE_CACHABLE_NONCOHERENT _CACHE_WB
111 117
112#else 118#else
113 119
114#define _CACHE_CACHABLE_NO_WA (0<<9) /* R4600 only */ 120#define _CACHE_CACHABLE_NO_WA (0<<_CACHE_SHIFT) /* R4600 only */
115#define _CACHE_CACHABLE_WA (1<<9) /* R4600 only */ 121#define _CACHE_CACHABLE_WA (1<<_CACHE_SHIFT) /* R4600 only */
116#define _CACHE_UNCACHED (2<<9) /* R4[0246]00 */ 122#define _CACHE_UNCACHED (2<<_CACHE_SHIFT) /* R4[0246]00 */
117#define _CACHE_CACHABLE_NONCOHERENT (3<<9) /* R4[0246]00 */ 123#define _CACHE_CACHABLE_NONCOHERENT (3<<_CACHE_SHIFT) /* R4[0246]00 */
118#define _CACHE_CACHABLE_CE (4<<9) /* R4[04]00MC only */ 124#define _CACHE_CACHABLE_CE (4<<_CACHE_SHIFT) /* R4[04]00MC only */
119#define _CACHE_CACHABLE_COW (5<<9) /* R4[04]00MC only */ 125#define _CACHE_CACHABLE_COW (5<<_CACHE_SHIFT) /* R4[04]00MC only */
120#define _CACHE_CACHABLE_CUW (6<<9) /* R4[04]00MC only */ 126#define _CACHE_CACHABLE_COHERENT (5<<_CACHE_SHIFT) /* MIPS32R2 CMP */
121#define _CACHE_UNCACHED_ACCELERATED (7<<9) /* R10000 only */ 127#define _CACHE_CACHABLE_CUW (6<<_CACHE_SHIFT) /* R4[04]00MC only */
128#define _CACHE_UNCACHED_ACCELERATED (7<<_CACHE_SHIFT) /* R10000 only */
122 129
123#endif 130#endif
124#endif
125#endif /* defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) */
126 131
127#define __READABLE (_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED) 132#define __READABLE (_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED)
128#define __WRITEABLE (_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED) 133#define __WRITEABLE (_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED)
@@ -135,14 +140,12 @@
135#define PAGE_CACHABLE_DEFAULT _CACHE_CACHABLE_NONCOHERENT 140#define PAGE_CACHABLE_DEFAULT _CACHE_CACHABLE_NONCOHERENT
136#elif defined(CONFIG_CPU_RM9000) 141#elif defined(CONFIG_CPU_RM9000)
137#define PAGE_CACHABLE_DEFAULT _CACHE_CWB 142#define PAGE_CACHABLE_DEFAULT _CACHE_CWB
143#elif defined(CONFIG_SOC_AU1X00)
144#define PAGE_CACHABLE_DEFAULT _CACHE_CACHABLE_NONCOHERENT
138#else 145#else
139#define PAGE_CACHABLE_DEFAULT _CACHE_CACHABLE_COW 146#define PAGE_CACHABLE_DEFAULT _CACHE_CACHABLE_COW
140#endif 147#endif
141 148
142#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) 149#define CONF_CM_DEFAULT (PAGE_CACHABLE_DEFAULT>>_CACHE_SHIFT)
143#define CONF_CM_DEFAULT (PAGE_CACHABLE_DEFAULT >> 3)
144#else
145#define CONF_CM_DEFAULT (PAGE_CACHABLE_DEFAULT >> 9)
146#endif
147 150
148#endif /* _ASM_PGTABLE_BITS_H */ 151#endif /* _ASM_PGTABLE_BITS_H */