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1 | /* |
1 | /* |
2 | * Copyright (c) 2005 Martin Decky |
2 | * Copyright (c) 2005 Martin Decky |
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 ppc64mm |
29 | /** @addtogroup ppc64mm |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_ppc64_PAGE_H_ |
35 | #ifndef KERN_ppc64_PAGE_H_ |
36 | #define KERN_ppc64_PAGE_H_ |
36 | #define KERN_ppc64_PAGE_H_ |
37 | 37 | ||
38 | #include <arch/mm/frame.h> |
38 | #include <arch/mm/frame.h> |
39 | 39 | ||
40 | #define PAGE_WIDTH FRAME_WIDTH |
40 | #define PAGE_WIDTH FRAME_WIDTH |
41 | #define PAGE_SIZE FRAME_SIZE |
41 | #define PAGE_SIZE FRAME_SIZE |
42 | 42 | ||
43 | #define PAGE_COLOR_BITS 0 /* dummy */ |
43 | #define PAGE_COLOR_BITS 0 /* dummy */ |
44 | 44 | ||
45 | #ifdef KERNEL |
45 | #ifdef KERNEL |
46 | 46 | ||
47 | #ifndef __ASM__ |
47 | #ifndef __ASM__ |
48 | # define KA2PA(x) (((uintptr_t) (x)) - 0x80000000) |
48 | # define KA2PA(x) (((uintptr_t) (x)) - 0x80000000) |
49 | # define PA2KA(x) (((uintptr_t) (x)) + 0x80000000) |
49 | # define PA2KA(x) (((uintptr_t) (x)) + 0x80000000) |
50 | #else |
50 | #else |
51 | # define KA2PA(x) ((x) - 0x80000000) |
51 | # define KA2PA(x) ((x) - 0x80000000) |
52 | # define PA2KA(x) ((x) + 0x80000000) |
52 | # define PA2KA(x) ((x) + 0x80000000) |
53 | #endif |
53 | #endif |
54 | 54 | ||
55 | /* |
55 | /* |
56 | * Implementation of generic 4-level page table interface, |
56 | * Implementation of generic 4-level page table interface, |
57 | * the hardware Page Hash Table is used as cache. |
57 | * the hardware Page Hash Table is used as cache. |
58 | * |
58 | * |
59 | * Page table layout: |
59 | * Page table layout: |
60 | * - 32-bit virtual addressess |
60 | * - 32-bit virtual addressess |
61 | * - Offset is 12 bits => pages are 4K long |
61 | * - Offset is 12 bits => pages are 4K long |
62 | * - PTL0 has 1024 entries (10 bits) |
62 | * - PTL0 has 1024 entries (10 bits) |
63 | * - PTL1 is not used |
63 | * - PTL1 is not used |
64 | * - PTL2 is not used |
64 | * - PTL2 is not used |
65 | * - PLT3 has 1024 entries (10 bits) |
65 | * - PLT3 has 1024 entries (10 bits) |
66 | */ |
66 | */ |
67 | 67 | ||
- | 68 | /* Number of entries in each level. */ |
|
68 | #define PTL0_ENTRIES_ARCH 1024 |
69 | #define PTL0_ENTRIES_ARCH 1024 |
69 | #define PTL1_ENTRIES_ARCH 0 |
70 | #define PTL1_ENTRIES_ARCH 0 |
70 | #define PTL2_ENTRIES_ARCH 0 |
71 | #define PTL2_ENTRIES_ARCH 0 |
71 | #define PTL3_ENTRIES_ARCH 1024 |
72 | #define PTL3_ENTRIES_ARCH 1024 |
72 | 73 | ||
- | 74 | /* Sizes of page tables in each level. */ |
|
73 | #define PTL0_SIZE_ARCH ONE_FRAME |
75 | #define PTL0_SIZE_ARCH ONE_FRAME |
74 | #define PTL1_SIZE_ARCH 0 |
76 | #define PTL1_SIZE_ARCH 0 |
75 | #define PTL2_SIZE_ARCH 0 |
77 | #define PTL2_SIZE_ARCH 0 |
76 | #define PTL3_SIZE_ARCH ONE_FRAME |
78 | #define PTL3_SIZE_ARCH ONE_FRAME |
77 | 79 | ||
- | 80 | /* Macros calculating indices into page tables in each level. */ |
|
78 | #define PTL0_INDEX_ARCH(vaddr) (((vaddr) >> 22) & 0x3ff) |
81 | #define PTL0_INDEX_ARCH(vaddr) (((vaddr) >> 22) & 0x3ff) |
79 | #define PTL1_INDEX_ARCH(vaddr) 0 |
82 | #define PTL1_INDEX_ARCH(vaddr) 0 |
80 | #define PTL2_INDEX_ARCH(vaddr) 0 |
83 | #define PTL2_INDEX_ARCH(vaddr) 0 |
81 | #define PTL3_INDEX_ARCH(vaddr) (((vaddr) >> 12) & 0x3ff) |
84 | #define PTL3_INDEX_ARCH(vaddr) (((vaddr) >> 12) & 0x3ff) |
82 | 85 | ||
- | 86 | /* Get PTE address accessors for each level. */ |
|
83 | #define GET_PTL1_ADDRESS_ARCH(ptl0, i) (((pte_t *) (ptl0))[(i)].pfn << 12) |
87 | #define GET_PTL1_ADDRESS_ARCH(ptl0, i) \ |
- | 88 | (((pte_t *) (ptl0))[(i)].pfn << 12) |
|
84 | #define GET_PTL2_ADDRESS_ARCH(ptl1, i) (ptl1) |
89 | #define GET_PTL2_ADDRESS_ARCH(ptl1, i) \ |
- | 90 | (ptl1) |
|
85 | #define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2) |
91 | #define GET_PTL3_ADDRESS_ARCH(ptl2, i) \ |
- | 92 | (ptl2) |
|
86 | #define GET_FRAME_ADDRESS_ARCH(ptl3, i) (((pte_t *) (ptl3))[(i)].pfn << 12) |
93 | #define GET_FRAME_ADDRESS_ARCH(ptl3, i) \ |
- | 94 | (((pte_t *) (ptl3))[(i)].pfn << 12) |
|
87 | 95 | ||
- | 96 | /* Set PTE address accessors for each level. */ |
|
88 | #define SET_PTL0_ADDRESS_ARCH(ptl0) |
97 | #define SET_PTL0_ADDRESS_ARCH(ptl0) |
89 | #define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) (((pte_t *) (ptl0))[(i)].pfn = (a) >> 12) |
98 | #define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) \ |
- | 99 | (((pte_t *) (ptl0))[(i)].pfn = (a) >> 12) |
|
90 | #define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
100 | #define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
91 | #define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
101 | #define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
92 | #define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) (((pte_t *) (ptl3))[(i)].pfn = (a) >> 12) |
102 | #define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) \ |
- | 103 | (((pte_t *) (ptl3))[(i)].pfn = (a) >> 12) |
|
93 | 104 | ||
- | 105 | /* Get PTE flags accessors for each level. */ |
|
- | 106 | #define GET_PTL1_FLAGS_ARCH(ptl0, i) \ |
|
94 | #define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *) (ptl0), (index_t) (i)) |
107 | get_pt_flags((pte_t *) (ptl0), (index_t) (i)) |
95 | #define GET_PTL2_FLAGS_ARCH(ptl1, i) PAGE_PRESENT |
108 | #define GET_PTL2_FLAGS_ARCH(ptl1, i) \ |
- | 109 | PAGE_PRESENT |
|
96 | #define GET_PTL3_FLAGS_ARCH(ptl2, i) PAGE_PRESENT |
110 | #define GET_PTL3_FLAGS_ARCH(ptl2, i) \ |
- | 111 | PAGE_PRESENT |
|
- | 112 | #define GET_FRAME_FLAGS_ARCH(ptl3, i) \ |
|
97 | #define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *) (ptl3), (index_t) (i)) |
113 | get_pt_flags((pte_t *) (ptl3), (index_t) (i)) |
98 | 114 | ||
- | 115 | /* Set PTE flags accessors for each level. */ |
|
- | 116 | #define SET_PTL1_FLAGS_ARCH(ptl0, i, x) \ |
|
99 | #define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x)) |
117 | set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x)) |
100 | #define SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
118 | #define SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
101 | #define SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
119 | #define SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
- | 120 | #define SET_FRAME_FLAGS_ARCH(ptl3, i, x) \ |
|
102 | #define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x)) |
121 | set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x)) |
103 | 122 | ||
- | 123 | /* Macros for querying the last-level PTEs. */ |
|
104 | #define PTE_VALID_ARCH(pte) (*((uint32_t *) (pte)) != 0) |
124 | #define PTE_VALID_ARCH(pte) (*((uint32_t *) (pte)) != 0) |
105 | #define PTE_PRESENT_ARCH(pte) ((pte)->p != 0) |
125 | #define PTE_PRESENT_ARCH(pte) ((pte)->p != 0) |
106 | #define PTE_GET_FRAME_ARCH(pte) ((uintptr_t) ((pte)->pfn << 12)) |
126 | #define PTE_GET_FRAME_ARCH(pte) ((uintptr_t) ((pte)->pfn << 12)) |
107 | #define PTE_WRITABLE_ARCH(pte) 1 |
127 | #define PTE_WRITABLE_ARCH(pte) 1 |
108 | #define PTE_EXECUTABLE_ARCH(pte) 1 |
128 | #define PTE_EXECUTABLE_ARCH(pte) 1 |
109 | 129 | ||
110 | #ifndef __ASM__ |
130 | #ifndef __ASM__ |
111 | 131 | ||
112 | #include <mm/mm.h> |
132 | #include <mm/mm.h> |
113 | #include <arch/interrupt.h> |
133 | #include <arch/interrupt.h> |
114 | 134 | ||
115 | static inline int get_pt_flags(pte_t *pt, index_t i) |
135 | static inline int get_pt_flags(pte_t *pt, index_t i) |
116 | { |
136 | { |
117 | pte_t *p = &pt[i]; |
137 | pte_t *p = &pt[i]; |
118 | 138 | ||
119 | return ( |
- | |
120 | (1 << PAGE_CACHEABLE_SHIFT) | |
139 | return ((1 << PAGE_CACHEABLE_SHIFT) | |
121 | ((!p->p) << PAGE_PRESENT_SHIFT) | |
140 | ((!p->p) << PAGE_PRESENT_SHIFT) | |
122 | (1 << PAGE_USER_SHIFT) | |
141 | (1 << PAGE_USER_SHIFT) | |
123 | (1 << PAGE_READ_SHIFT) | |
142 | (1 << PAGE_READ_SHIFT) | |
124 | (1 << PAGE_WRITE_SHIFT) | |
143 | (1 << PAGE_WRITE_SHIFT) | |
125 | (1 << PAGE_EXEC_SHIFT) | |
144 | (1 << PAGE_EXEC_SHIFT) | |
126 | (p->g << PAGE_GLOBAL_SHIFT) |
145 | (p->g << PAGE_GLOBAL_SHIFT)); |
127 | ); |
- | |
128 | } |
146 | } |
129 | 147 | ||
130 | static inline void set_pt_flags(pte_t *pt, index_t i, int flags) |
148 | static inline void set_pt_flags(pte_t *pt, index_t i, int flags) |
131 | { |
149 | { |
132 | pte_t *p = &pt[i]; |
150 | pte_t *p = &pt[i]; |
133 | 151 | ||
134 | p->p = !(flags & PAGE_NOT_PRESENT); |
152 | p->p = !(flags & PAGE_NOT_PRESENT); |
135 | p->g = (flags & PAGE_GLOBAL) != 0; |
153 | p->g = (flags & PAGE_GLOBAL) != 0; |
136 | p->valid = 1; |
154 | p->valid = 1; |
137 | } |
155 | } |
138 | 156 | ||
139 | extern void page_arch_init(void); |
157 | extern void page_arch_init(void); |
140 | 158 | ||
141 | #define PHT_BITS 16 |
159 | #define PHT_BITS 16 |
142 | #define PHT_ORDER 4 |
160 | #define PHT_ORDER 4 |
143 | 161 | ||
144 | typedef struct { |
162 | typedef struct { |
145 | unsigned v : 1; /**< Valid */ |
163 | unsigned v : 1; /**< Valid */ |
146 | unsigned vsid : 24; /**< Virtual Segment ID */ |
164 | unsigned vsid : 24; /**< Virtual Segment ID */ |
147 | unsigned h : 1; /**< Primary/secondary hash */ |
165 | unsigned h : 1; /**< Primary/secondary hash */ |
148 | unsigned api : 6; /**< Abbreviated Page Index */ |
166 | unsigned api : 6; /**< Abbreviated Page Index */ |
149 | unsigned rpn : 20; /**< Real Page Number */ |
167 | unsigned rpn : 20; /**< Real Page Number */ |
150 | unsigned reserved0 : 3; |
168 | unsigned reserved0 : 3; |
151 | unsigned r : 1; /**< Reference */ |
169 | unsigned r : 1; /**< Reference */ |
152 | unsigned c : 1; /**< Change */ |
170 | unsigned c : 1; /**< Change */ |
153 | unsigned wimg : 4; /**< Access control */ |
171 | unsigned wimg : 4; /**< Access control */ |
154 | unsigned reserved1 : 1; |
172 | unsigned reserved1 : 1; |
155 | unsigned pp : 2; /**< Page protection */ |
173 | unsigned pp : 2; /**< Page protection */ |
156 | } phte_t; |
174 | } phte_t; |
157 | 175 | ||
158 | extern void pht_refill(bool data, istate_t *istate); |
176 | extern void pht_refill(bool data, istate_t *istate); |
159 | extern void pht_init(void); |
177 | extern void pht_init(void); |
160 | 178 | ||
161 | #endif /* __ASM__ */ |
179 | #endif /* __ASM__ */ |
162 | 180 | ||
163 | #endif /* KERNEL */ |
181 | #endif /* KERNEL */ |
164 | 182 | ||
165 | #endif |
183 | #endif |
166 | 184 | ||
167 | /** @} |
185 | /** @} |
168 | */ |
186 | */ |
169 | 187 |