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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/types.h> |
38 | #include <arch/types.h> |
39 | #include <typedefs.h> |
39 | #include <typedefs.h> |
40 | #include <arch/mm/asid.h> |
40 | #include <arch/mm/asid.h> |
41 | #include <arch/exception.h> |
41 | #include <arch/exception.h> |
42 | 42 | ||
43 | #define TLB_ENTRY_COUNT 48 |
43 | #define TLB_ENTRY_COUNT 48 |
44 | 44 | ||
45 | #define TLB_WIRED 1 |
45 | #define TLB_WIRED 1 |
46 | #define TLB_KSTACK_WIRED_INDEX 0 |
46 | #define TLB_KSTACK_WIRED_INDEX 0 |
47 | 47 | ||
48 | #define TLB_PAGE_MASK_4K (0x000 << 13) |
48 | #define TLB_PAGE_MASK_4K (0x000 << 13) |
49 | #define TLB_PAGE_MASK_16K (0x003 << 13) |
49 | #define TLB_PAGE_MASK_16K (0x003 << 13) |
50 | #define TLB_PAGE_MASK_64K (0x00f << 13) |
50 | #define TLB_PAGE_MASK_64K (0x00f << 13) |
51 | #define TLB_PAGE_MASK_256K (0x03f << 13) |
51 | #define TLB_PAGE_MASK_256K (0x03f << 13) |
52 | #define TLB_PAGE_MASK_1M (0x0ff << 13) |
52 | #define TLB_PAGE_MASK_1M (0x0ff << 13) |
53 | #define TLB_PAGE_MASK_4M (0x3ff << 13) |
53 | #define TLB_PAGE_MASK_4M (0x3ff << 13) |
54 | #define TLB_PAGE_MASK_16M (0xfff << 13) |
54 | #define TLB_PAGE_MASK_16M (0xfff << 13) |
55 | 55 | ||
56 | #define PAGE_UNCACHED 2 |
56 | #define PAGE_UNCACHED 2 |
57 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
57 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
58 | 58 | ||
59 | typedef union { |
59 | typedef union { |
60 | struct { |
60 | struct { |
61 | #ifdef BIG_ENDIAN |
61 | #ifdef BIG_ENDIAN |
62 | unsigned : 2; /* zero */ |
62 | unsigned : 2; /* zero */ |
63 | unsigned pfn : 24; /* frame number */ |
63 | unsigned pfn : 24; /* frame number */ |
64 | unsigned c : 3; /* cache coherency attribute */ |
64 | unsigned c : 3; /* cache coherency attribute */ |
65 | unsigned d : 1; /* dirty/write-protect bit */ |
65 | unsigned d : 1; /* dirty/write-protect bit */ |
66 | unsigned v : 1; /* valid bit */ |
66 | unsigned v : 1; /* valid bit */ |
67 | unsigned g : 1; /* global bit */ |
67 | unsigned g : 1; /* global bit */ |
68 | #else |
68 | #else |
69 | unsigned g : 1; /* global bit */ |
69 | unsigned g : 1; /* global bit */ |
70 | unsigned v : 1; /* valid bit */ |
70 | unsigned v : 1; /* valid bit */ |
71 | unsigned d : 1; /* dirty/write-protect bit */ |
71 | unsigned d : 1; /* dirty/write-protect bit */ |
72 | unsigned c : 3; /* cache coherency attribute */ |
72 | unsigned c : 3; /* cache coherency attribute */ |
73 | unsigned pfn : 24; /* frame number */ |
73 | unsigned pfn : 24; /* frame number */ |
74 | unsigned : 2; /* zero */ |
74 | unsigned : 2; /* zero */ |
75 | #endif |
75 | #endif |
76 | } __attribute__ ((packed)); |
76 | } __attribute__ ((packed)); |
77 | uint32_t value; |
77 | uint32_t value; |
78 | } entry_lo_t; |
78 | } entry_lo_t; |
79 | 79 | ||
80 | typedef union { |
80 | typedef union { |
81 | struct { |
81 | struct { |
82 | #ifdef BIG_ENDIAN |
82 | #ifdef BIG_ENDIAN |
83 | unsigned vpn2 : 19; |
83 | unsigned vpn2 : 19; |
84 | unsigned : 5; |
84 | unsigned : 5; |
85 | unsigned asid : 8; |
85 | unsigned asid : 8; |
86 | #else |
86 | #else |
87 | unsigned asid : 8; |
87 | unsigned asid : 8; |
88 | unsigned : 5; |
88 | unsigned : 5; |
89 | unsigned vpn2 : 19; |
89 | unsigned vpn2 : 19; |
90 | #endif |
90 | #endif |
91 | } __attribute__ ((packed)); |
91 | } __attribute__ ((packed)); |
92 | uint32_t value; |
92 | uint32_t value; |
93 | } entry_hi_t; |
93 | } entry_hi_t; |
94 | 94 | ||
95 | typedef union { |
95 | typedef union { |
96 | struct { |
96 | struct { |
97 | #ifdef BIG_ENDIAN |
97 | #ifdef BIG_ENDIAN |
98 | unsigned : 7; |
98 | unsigned : 7; |
99 | unsigned mask : 12; |
99 | unsigned mask : 12; |
100 | unsigned : 13; |
100 | unsigned : 13; |
101 | #else |
101 | #else |
102 | unsigned : 13; |
102 | unsigned : 13; |
103 | unsigned mask : 12; |
103 | unsigned mask : 12; |
104 | unsigned : 7; |
104 | unsigned : 7; |
105 | #endif |
105 | #endif |
106 | } __attribute__ ((packed)); |
106 | } __attribute__ ((packed)); |
107 | uint32_t value; |
107 | uint32_t value; |
108 | } page_mask_t; |
108 | } page_mask_t; |
109 | 109 | ||
110 | typedef union { |
110 | typedef union { |
111 | struct { |
111 | struct { |
112 | #ifdef BIG_ENDIAN |
112 | #ifdef BIG_ENDIAN |
113 | unsigned p : 1; |
113 | unsigned p : 1; |
114 | unsigned : 27; |
114 | unsigned : 27; |
115 | unsigned index : 4; |
115 | unsigned index : 4; |
116 | #else |
116 | #else |
117 | unsigned index : 4; |
117 | unsigned index : 4; |
118 | unsigned : 27; |
118 | unsigned : 27; |
119 | unsigned p : 1; |
119 | unsigned p : 1; |
120 | #endif |
120 | #endif |
121 | } __attribute__ ((packed)); |
121 | } __attribute__ ((packed)); |
122 | uint32_t value; |
122 | uint32_t value; |
123 | } tlb_index_t; |
123 | } tlb_index_t; |
124 | 124 | ||
125 | /** Probe TLB for Matching Entry |
125 | /** Probe TLB for Matching Entry |
126 | * |
126 | * |
127 | * Probe TLB for Matching Entry. |
127 | * Probe TLB for Matching Entry. |
128 | */ |
128 | */ |
129 | static inline void tlbp(void) |
129 | static inline void tlbp(void) |
130 | { |
130 | { |
131 | asm volatile ("tlbp\n\t"); |
131 | asm volatile ("tlbp\n\t"); |
132 | } |
132 | } |
133 | 133 | ||
134 | 134 | ||
135 | /** Read Indexed TLB Entry |
135 | /** Read Indexed TLB Entry |
136 | * |
136 | * |
137 | * Read Indexed TLB Entry. |
137 | * Read Indexed TLB Entry. |
138 | */ |
138 | */ |
139 | static inline void tlbr(void) |
139 | static inline void tlbr(void) |
140 | { |
140 | { |
141 | asm volatile ("tlbr\n\t"); |
141 | asm volatile ("tlbr\n\t"); |
142 | } |
142 | } |
143 | 143 | ||
144 | /** Write Indexed TLB Entry |
144 | /** Write Indexed TLB Entry |
145 | * |
145 | * |
146 | * Write Indexed TLB Entry. |
146 | * Write Indexed TLB Entry. |
147 | */ |
147 | */ |
148 | static inline void tlbwi(void) |
148 | static inline void tlbwi(void) |
149 | { |
149 | { |
150 | asm volatile ("tlbwi\n\t"); |
150 | asm volatile ("tlbwi\n\t"); |
151 | } |
151 | } |
152 | 152 | ||
153 | /** Write Random TLB Entry |
153 | /** Write Random TLB Entry |
154 | * |
154 | * |
155 | * Write Random TLB Entry. |
155 | * Write Random TLB Entry. |
156 | */ |
156 | */ |
157 | static inline void tlbwr(void) |
157 | static inline void tlbwr(void) |
158 | { |
158 | { |
159 | asm volatile ("tlbwr\n\t"); |
159 | asm volatile ("tlbwr\n\t"); |
160 | } |
160 | } |
161 | 161 | ||
162 | #define tlb_invalidate(asid) tlb_invalidate_asid(asid) |
162 | #define tlb_invalidate(asid) tlb_invalidate_asid(asid) |
163 | 163 | ||
164 | extern void tlb_invalid(istate_t *istate); |
164 | extern void tlb_invalid(istate_t *istate); |
165 | extern void tlb_refill(istate_t *istate); |
165 | extern void tlb_refill(istate_t *istate); |
166 | extern void tlb_modified(istate_t *istate); |
166 | extern void tlb_modified(istate_t *istate); |
167 | extern void tlb_prepare_entry_lo(entry_lo_t *lo, bool g, bool v, bool d, bool cacheable, uintptr_t pfn); |
167 | extern void tlb_prepare_entry_lo(entry_lo_t *lo, bool g, bool v, bool d, bool cacheable, uintptr_t pfn); |
168 | extern void tlb_prepare_entry_hi(entry_hi_t *hi, asid_t asid, uintptr_t addr); |
168 | extern void tlb_prepare_entry_hi(entry_hi_t *hi, asid_t asid, uintptr_t addr); |
169 | 169 | ||
170 | #endif |
170 | #endif |
171 | 171 | ||
172 | /** @} |
172 | /** @} |
173 | */ |
173 | */ |
174 | 174 |