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34 | 34 | ||
35 | #ifndef KERN_mips32_TLB_H_ |
35 | #ifndef KERN_mips32_TLB_H_ |
36 | #define KERN_mips32_TLB_H_ |
36 | #define KERN_mips32_TLB_H_ |
37 | 37 | ||
38 | #include <arch/exception.h> |
38 | #include <arch/exception.h> |
39 | #include <typedefs.h> |
- | |
40 | 39 | ||
41 | #ifdef TLBCNT |
40 | #ifdef TLBCNT |
42 | # define TLB_ENTRY_COUNT TLBCNT |
41 | # define TLB_ENTRY_COUNT TLBCNT |
43 | #else |
42 | #else |
44 | # define TLB_ENTRY_COUNT 48 |
43 | # define TLB_ENTRY_COUNT 48 |
Line 50... | Line 49... | ||
50 | #define TLB_PAGE_MASK_16K (0x3<<13) |
49 | #define TLB_PAGE_MASK_16K (0x3<<13) |
51 | 50 | ||
52 | #define PAGE_UNCACHED 2 |
51 | #define PAGE_UNCACHED 2 |
53 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
52 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
54 | 53 | ||
55 | typedef union entry_lo entry_lo_t; |
- | |
56 | typedef union entry_hi entry_hi_t; |
- | |
57 | typedef union page_mask page_mask_t; |
- | |
58 | typedef union index tlb_index_t; |
54 | typedef union { |
59 | - | ||
60 | union entry_lo { |
- | |
61 | struct { |
55 | struct { |
62 | #ifdef BIG_ENDIAN |
56 | #ifdef BIG_ENDIAN |
63 | unsigned : 2; /* zero */ |
57 | unsigned : 2; /* zero */ |
64 | unsigned pfn : 24; /* frame number */ |
58 | unsigned pfn : 24; /* frame number */ |
65 | unsigned c : 3; /* cache coherency attribute */ |
59 | unsigned c : 3; /* cache coherency attribute */ |
Line 74... | Line 68... | ||
74 | unsigned pfn : 24; /* frame number */ |
68 | unsigned pfn : 24; /* frame number */ |
75 | unsigned : 2; /* zero */ |
69 | unsigned : 2; /* zero */ |
76 | #endif |
70 | #endif |
77 | } __attribute__ ((packed)); |
71 | } __attribute__ ((packed)); |
78 | uint32_t value; |
72 | uint32_t value; |
79 | }; |
- | |
80 | - | ||
81 | /** Page Table Entry. */ |
- | |
82 | struct pte { |
73 | } entry_lo_t; |
83 | unsigned g : 1; /**< Global bit. */ |
- | |
84 | unsigned p : 1; /**< Present bit. */ |
- | |
85 | unsigned d : 1; /**< Dirty bit. */ |
- | |
86 | unsigned cacheable : 1; /**< Cacheable bit. */ |
- | |
87 | unsigned : 1; /**< Unused. */ |
- | |
88 | unsigned soft_valid : 1; /**< Valid content even if not present. */ |
- | |
89 | unsigned pfn : 24; /**< Physical frame number. */ |
- | |
90 | unsigned w : 1; /**< Page writable bit. */ |
- | |
91 | unsigned a : 1; /**< Accessed bit. */ |
- | |
92 | }; |
- | |
93 | 74 | ||
94 | union entry_hi { |
75 | typedef union { |
95 | struct { |
76 | struct { |
96 | #ifdef BIG_ENDIAN |
77 | #ifdef BIG_ENDIAN |
97 | unsigned vpn2 : 19; |
78 | unsigned vpn2 : 19; |
98 | unsigned : 5; |
79 | unsigned : 5; |
99 | unsigned asid : 8; |
80 | unsigned asid : 8; |
Line 102... | Line 83... | ||
102 | unsigned : 5; |
83 | unsigned : 5; |
103 | unsigned vpn2 : 19; |
84 | unsigned vpn2 : 19; |
104 | #endif |
85 | #endif |
105 | } __attribute__ ((packed)); |
86 | } __attribute__ ((packed)); |
106 | uint32_t value; |
87 | uint32_t value; |
107 | }; |
88 | } entry_hi_t; |
108 | 89 | ||
109 | union page_mask { |
90 | typedef union { |
110 | struct { |
91 | struct { |
111 | #ifdef BIG_ENDIAN |
92 | #ifdef BIG_ENDIAN |
112 | unsigned : 7; |
93 | unsigned : 7; |
113 | unsigned mask : 12; |
94 | unsigned mask : 12; |
114 | unsigned : 13; |
95 | unsigned : 13; |
Line 117... | Line 98... | ||
117 | unsigned mask : 12; |
98 | unsigned mask : 12; |
118 | unsigned : 7; |
99 | unsigned : 7; |
119 | #endif |
100 | #endif |
120 | } __attribute__ ((packed)); |
101 | } __attribute__ ((packed)); |
121 | uint32_t value; |
102 | uint32_t value; |
122 | }; |
103 | } page_mask_t; |
123 | 104 | ||
124 | union index { |
105 | typedef union { |
125 | struct { |
106 | struct { |
126 | #ifdef BIG_ENDIAN |
107 | #ifdef BIG_ENDIAN |
127 | unsigned p : 1; |
108 | unsigned p : 1; |
128 | unsigned : 27; |
109 | unsigned : 27; |
129 | unsigned index : 4; |
110 | unsigned index : 4; |
Line 132... | Line 113... | ||
132 | unsigned : 27; |
113 | unsigned : 27; |
133 | unsigned p : 1; |
114 | unsigned p : 1; |
134 | #endif |
115 | #endif |
135 | } __attribute__ ((packed)); |
116 | } __attribute__ ((packed)); |
136 | uint32_t value; |
117 | uint32_t value; |
137 | }; |
118 | } tlb_index_t; |
138 | 119 | ||
139 | /** Probe TLB for Matching Entry |
120 | /** Probe TLB for Matching Entry |
140 | * |
121 | * |
141 | * Probe TLB for Matching Entry. |
122 | * Probe TLB for Matching Entry. |
142 | */ |
123 | */ |