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1 | /* |
1 | /* |
2 | * Copyright (c) 2003-2004 Jakub Jermar |
2 | * Copyright (c) 2003-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup mips32mm |
29 | /** @addtogroup mips32mm |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
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 | 39 | ||
40 | #ifdef TLBCNT |
40 | #ifdef TLBCNT |
41 | # define TLB_ENTRY_COUNT TLBCNT |
41 | # define TLB_ENTRY_COUNT TLBCNT |
42 | #else |
42 | #else |
43 | # define TLB_ENTRY_COUNT 48 |
43 | # define TLB_ENTRY_COUNT 48 |
44 | #endif |
44 | #endif |
45 | 45 | ||
46 | #define TLB_WIRED 1 |
46 | #define TLB_WIRED 1 |
47 | #define TLB_KSTACK_WIRED_INDEX 0 |
47 | #define TLB_KSTACK_WIRED_INDEX 0 |
48 | 48 | ||
49 | #define TLB_PAGE_MASK_16K (0x3<<13) |
49 | #define TLB_PAGE_MASK_16K (0x3<<13) |
50 | 50 | ||
51 | #define PAGE_UNCACHED 2 |
51 | #define PAGE_UNCACHED 2 |
52 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
52 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
53 | 53 | ||
54 | typedef union { |
54 | typedef union { |
55 | struct { |
55 | struct { |
56 | #ifdef BIG_ENDIAN |
56 | #ifdef BIG_ENDIAN |
57 | unsigned : 2; /* zero */ |
57 | unsigned : 2; /* zero */ |
58 | unsigned pfn : 24; /* frame number */ |
58 | unsigned pfn : 24; /* frame number */ |
59 | unsigned c : 3; /* cache coherency attribute */ |
59 | unsigned c : 3; /* cache coherency attribute */ |
60 | unsigned d : 1; /* dirty/write-protect bit */ |
60 | unsigned d : 1; /* dirty/write-protect bit */ |
61 | unsigned v : 1; /* valid bit */ |
61 | unsigned v : 1; /* valid bit */ |
62 | unsigned g : 1; /* global bit */ |
62 | unsigned g : 1; /* global bit */ |
63 | #else |
63 | #else |
64 | unsigned g : 1; /* global bit */ |
64 | unsigned g : 1; /* global bit */ |
65 | unsigned v : 1; /* valid bit */ |
65 | unsigned v : 1; /* valid bit */ |
66 | unsigned d : 1; /* dirty/write-protect bit */ |
66 | unsigned d : 1; /* dirty/write-protect bit */ |
67 | unsigned c : 3; /* cache coherency attribute */ |
67 | unsigned c : 3; /* cache coherency attribute */ |
68 | unsigned pfn : 24; /* frame number */ |
68 | unsigned pfn : 24; /* frame number */ |
69 | unsigned : 2; /* zero */ |
69 | unsigned : 2; /* zero */ |
70 | #endif |
70 | #endif |
71 | } __attribute__ ((packed)); |
71 | } __attribute__ ((packed)); |
72 | uint32_t value; |
72 | uint32_t value; |
73 | } entry_lo_t; |
73 | } entry_lo_t; |
74 | 74 | ||
75 | typedef union { |
75 | typedef union { |
76 | struct { |
76 | struct { |
77 | #ifdef BIG_ENDIAN |
77 | #ifdef BIG_ENDIAN |
78 | unsigned vpn2 : 19; |
78 | unsigned vpn2 : 19; |
79 | unsigned : 5; |
79 | unsigned : 5; |
80 | unsigned asid : 8; |
80 | unsigned asid : 8; |
81 | #else |
81 | #else |
82 | unsigned asid : 8; |
82 | unsigned asid : 8; |
83 | unsigned : 5; |
83 | unsigned : 5; |
84 | unsigned vpn2 : 19; |
84 | unsigned vpn2 : 19; |
85 | #endif |
85 | #endif |
86 | } __attribute__ ((packed)); |
86 | } __attribute__ ((packed)); |
87 | uint32_t value; |
87 | uint32_t value; |
88 | } entry_hi_t; |
88 | } entry_hi_t; |
89 | 89 | ||
90 | typedef union { |
90 | typedef union { |
91 | struct { |
91 | struct { |
92 | #ifdef BIG_ENDIAN |
92 | #ifdef BIG_ENDIAN |
93 | unsigned : 7; |
93 | unsigned : 7; |
94 | unsigned mask : 12; |
94 | unsigned mask : 12; |
95 | unsigned : 13; |
95 | unsigned : 13; |
96 | #else |
96 | #else |
97 | unsigned : 13; |
97 | unsigned : 13; |
98 | unsigned mask : 12; |
98 | unsigned mask : 12; |
99 | unsigned : 7; |
99 | unsigned : 7; |
100 | #endif |
100 | #endif |
101 | } __attribute__ ((packed)); |
101 | } __attribute__ ((packed)); |
102 | uint32_t value; |
102 | uint32_t value; |
103 | } page_mask_t; |
103 | } page_mask_t; |
104 | 104 | ||
105 | typedef union { |
105 | typedef union { |
106 | struct { |
106 | struct { |
107 | #ifdef BIG_ENDIAN |
107 | #ifdef BIG_ENDIAN |
108 | unsigned p : 1; |
108 | unsigned p : 1; |
109 | unsigned : 27; |
109 | unsigned : 27; |
110 | unsigned index : 4; |
110 | unsigned index : 4; |
111 | #else |
111 | #else |
112 | unsigned index : 4; |
112 | unsigned index : 4; |
113 | unsigned : 27; |
113 | unsigned : 27; |
114 | unsigned p : 1; |
114 | unsigned p : 1; |
115 | #endif |
115 | #endif |
116 | } __attribute__ ((packed)); |
116 | } __attribute__ ((packed)); |
117 | uint32_t value; |
117 | uint32_t value; |
118 | } tlb_index_t; |
118 | } tlb_index_t; |
119 | 119 | ||
120 | /** Probe TLB for Matching Entry |
120 | /** Probe TLB for Matching Entry |
121 | * |
121 | * |
122 | * Probe TLB for Matching Entry. |
122 | * Probe TLB for Matching Entry. |
123 | */ |
123 | */ |
124 | static inline void tlbp(void) |
124 | static inline void tlbp(void) |
125 | { |
125 | { |
126 | asm volatile ("tlbp\n\t"); |
126 | asm volatile ("tlbp\n\t"); |
127 | } |
127 | } |
128 | 128 | ||
129 | 129 | ||
130 | /** Read Indexed TLB Entry |
130 | /** Read Indexed TLB Entry |
131 | * |
131 | * |
132 | * Read Indexed TLB Entry. |
132 | * Read Indexed TLB Entry. |
133 | */ |
133 | */ |
134 | static inline void tlbr(void) |
134 | static inline void tlbr(void) |
135 | { |
135 | { |
136 | asm volatile ("tlbr\n\t"); |
136 | asm volatile ("tlbr\n\t"); |
137 | } |
137 | } |
138 | 138 | ||
139 | /** Write Indexed TLB Entry |
139 | /** Write Indexed TLB Entry |
140 | * |
140 | * |
141 | * Write Indexed TLB Entry. |
141 | * Write Indexed TLB Entry. |
142 | */ |
142 | */ |
143 | static inline void tlbwi(void) |
143 | static inline void tlbwi(void) |
144 | { |
144 | { |
145 | asm volatile ("tlbwi\n\t"); |
145 | asm volatile ("tlbwi\n\t"); |
146 | } |
146 | } |
147 | 147 | ||
148 | /** Write Random TLB Entry |
148 | /** Write Random TLB Entry |
149 | * |
149 | * |
150 | * Write Random TLB Entry. |
150 | * Write Random TLB Entry. |
151 | */ |
151 | */ |
152 | static inline void tlbwr(void) |
152 | static inline void tlbwr(void) |
153 | { |
153 | { |
154 | asm volatile ("tlbwr\n\t"); |
154 | asm volatile ("tlbwr\n\t"); |
155 | } |
155 | } |
156 | 156 | ||
157 | #define tlb_invalidate(asid) tlb_invalidate_asid(asid) |
157 | #define tlb_invalidate(asid) tlb_invalidate_asid(asid) |
158 | 158 | ||
159 | extern void tlb_invalid(istate_t *istate); |
159 | extern void tlb_invalid(istate_t *istate); |
160 | extern void tlb_refill(istate_t *istate); |
160 | extern void tlb_refill(istate_t *istate); |
161 | extern void tlb_modified(istate_t *istate); |
161 | extern void tlb_modified(istate_t *istate); |
162 | 162 | ||
163 | #endif |
163 | #endif |
164 | 164 | ||
165 | /** @} |
165 | /** @} |
166 | */ |
166 | */ |
167 | 167 |