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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Ondrej Palkovsky |
2 | * Copyright (C) 2005 Ondrej Palkovsky |
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 | #ifndef __amd64_PAGE_H__ |
29 | #ifndef __amd64_PAGE_H__ |
30 | #define __amd64_PAGE_H__ |
30 | #define __amd64_PAGE_H__ |
31 | 31 | ||
32 | #include <arch/mm/frame.h> |
32 | #include <arch/mm/frame.h> |
33 | 33 | ||
34 | #define PAGE_WIDTH FRAME_WIDTH |
34 | #define PAGE_WIDTH FRAME_WIDTH |
35 | #define PAGE_SIZE FRAME_SIZE |
35 | #define PAGE_SIZE FRAME_SIZE |
36 | 36 | ||
37 | #ifdef KERNEL |
37 | #ifdef KERNEL |
38 | 38 | ||
39 | #ifndef __ASM__ |
39 | #ifndef __ASM__ |
40 | # include <mm/page.h> |
40 | # include <mm/page.h> |
41 | # include <arch/types.h> |
41 | # include <arch/types.h> |
42 | #endif |
42 | #endif |
43 | 43 | ||
44 | #ifndef __ASM__ |
44 | #ifndef __ASM__ |
45 | # define KA2PA(x) (((__address) (x)) - 0xffffffff80000000) |
45 | # define KA2PA(x) (((__address) (x)) - 0xffffffff80000000) |
46 | # define PA2KA(x) (((__address) (x)) + 0xffffffff80000000) |
46 | # define PA2KA(x) (((__address) (x)) + 0xffffffff80000000) |
47 | #else |
47 | #else |
48 | # define KA2PA(x) ((x) - 0xffffffff80000000) |
48 | # define KA2PA(x) ((x) - 0xffffffff80000000) |
49 | # define PA2KA(x) ((x) + 0xffffffff80000000) |
49 | # define PA2KA(x) ((x) + 0xffffffff80000000) |
50 | #endif |
50 | #endif |
51 | 51 | ||
52 | #define PTL0_ENTRIES_ARCH 512 |
52 | #define PTL0_ENTRIES_ARCH 512 |
53 | #define PTL1_ENTRIES_ARCH 512 |
53 | #define PTL1_ENTRIES_ARCH 512 |
54 | #define PTL2_ENTRIES_ARCH 512 |
54 | #define PTL2_ENTRIES_ARCH 512 |
55 | #define PTL3_ENTRIES_ARCH 512 |
55 | #define PTL3_ENTRIES_ARCH 512 |
56 | 56 | ||
57 | #define PTL0_INDEX_ARCH(vaddr) (((vaddr)>>39)&0x1ff) |
57 | #define PTL0_INDEX_ARCH(vaddr) (((vaddr)>>39)&0x1ff) |
58 | #define PTL1_INDEX_ARCH(vaddr) (((vaddr)>>30)&0x1ff) |
58 | #define PTL1_INDEX_ARCH(vaddr) (((vaddr)>>30)&0x1ff) |
59 | #define PTL2_INDEX_ARCH(vaddr) (((vaddr)>>21)&0x1ff) |
59 | #define PTL2_INDEX_ARCH(vaddr) (((vaddr)>>21)&0x1ff) |
60 | #define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x1ff) |
60 | #define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x1ff) |
61 | 61 | ||
62 | #define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t *) ((((__u64) ((pte_t *)(ptl0))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl0))[(i)].addr_32_51)<<32 ))) |
62 | #define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t *) ((((__u64) ((pte_t *)(ptl0))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl0))[(i)].addr_32_51)<<32 ))) |
63 | #define GET_PTL2_ADDRESS_ARCH(ptl1, i) ((pte_t *) ((((__u64) ((pte_t *)(ptl1))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl1))[(i)].addr_32_51)<<32 ))) |
63 | #define GET_PTL2_ADDRESS_ARCH(ptl1, i) ((pte_t *) ((((__u64) ((pte_t *)(ptl1))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl1))[(i)].addr_32_51)<<32 ))) |
64 | #define GET_PTL3_ADDRESS_ARCH(ptl2, i) ((pte_t *) ((((__u64) ((pte_t *)(ptl2))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl2))[(i)].addr_32_51)<<32 ))) |
64 | #define GET_PTL3_ADDRESS_ARCH(ptl2, i) ((pte_t *) ((((__u64) ((pte_t *)(ptl2))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl2))[(i)].addr_32_51)<<32 ))) |
65 | #define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((__address *) ((((__u64) ((pte_t *)(ptl3))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl3))[(i)].addr_32_51)<<32 ))) |
65 | #define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((__address *) ((((__u64) ((pte_t *)(ptl3))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl3))[(i)].addr_32_51)<<32 ))) |
66 | 66 | ||
67 | #define SET_PTL0_ADDRESS_ARCH(ptl0) (write_cr3((__address) (ptl0))) |
67 | #define SET_PTL0_ADDRESS_ARCH(ptl0) (write_cr3((__address) (ptl0))) |
68 | #define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) set_pt_addr((pte_t *)(ptl0), (index_t)(i), a) |
68 | #define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) set_pt_addr((pte_t *)(ptl0), (index_t)(i), a) |
69 | #define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) set_pt_addr((pte_t *)(ptl1), (index_t)(i), a) |
69 | #define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) set_pt_addr((pte_t *)(ptl1), (index_t)(i), a) |
70 | #define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) set_pt_addr((pte_t *)(ptl2), (index_t)(i), a) |
70 | #define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) set_pt_addr((pte_t *)(ptl2), (index_t)(i), a) |
71 | #define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) set_pt_addr((pte_t *)(ptl3), (index_t)(i), a) |
71 | #define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) set_pt_addr((pte_t *)(ptl3), (index_t)(i), a) |
72 | 72 | ||
73 | #define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *)(ptl0), (index_t)(i)) |
73 | #define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *)(ptl0), (index_t)(i)) |
74 | #define GET_PTL2_FLAGS_ARCH(ptl1, i) get_pt_flags((pte_t *)(ptl1), (index_t)(i)) |
74 | #define GET_PTL2_FLAGS_ARCH(ptl1, i) get_pt_flags((pte_t *)(ptl1), (index_t)(i)) |
75 | #define GET_PTL3_FLAGS_ARCH(ptl2, i) get_pt_flags((pte_t *)(ptl2), (index_t)(i)) |
75 | #define GET_PTL3_FLAGS_ARCH(ptl2, i) get_pt_flags((pte_t *)(ptl2), (index_t)(i)) |
76 | #define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *)(ptl3), (index_t)(i)) |
76 | #define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *)(ptl3), (index_t)(i)) |
77 | 77 | ||
78 | #define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x)) |
78 | #define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x)) |
79 | #define SET_PTL2_FLAGS_ARCH(ptl1, i, x) set_pt_flags((pte_t *)(ptl1), (index_t)(i), (x)) |
79 | #define SET_PTL2_FLAGS_ARCH(ptl1, i, x) set_pt_flags((pte_t *)(ptl1), (index_t)(i), (x)) |
80 | #define SET_PTL3_FLAGS_ARCH(ptl2, i, x) set_pt_flags((pte_t *)(ptl2), (index_t)(i), (x)) |
80 | #define SET_PTL3_FLAGS_ARCH(ptl2, i, x) set_pt_flags((pte_t *)(ptl2), (index_t)(i), (x)) |
81 | #define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x)) |
81 | #define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x)) |
82 | 82 | ||
83 | #define PTE_VALID_ARCH(p) (*((__u64 *) (p)) != 0) |
83 | #define PTE_VALID_ARCH(p) (*((__u64 *) (p)) != 0) |
- | 84 | #define PTE_PRESENT_ARCH(p) ((p)->present != 0) |
|
- | 85 | #define PTE_GET_FRAME_ARCH(p) ((((__address)(p)->addr_12_31)<<12) | ((__address)(p)->addr_32_51<<32)) |
|
84 | 86 | ||
85 | #ifndef __ASM__ |
87 | #ifndef __ASM__ |
86 | 88 | ||
87 | /** Page Table Entry. */ |
89 | /** Page Table Entry. */ |
88 | struct page_specifier { |
90 | struct page_specifier { |
89 | unsigned present : 1; |
91 | unsigned present : 1; |
90 | unsigned writeable : 1; |
92 | unsigned writeable : 1; |
91 | unsigned uaccessible : 1; |
93 | unsigned uaccessible : 1; |
92 | unsigned page_write_through : 1; |
94 | unsigned page_write_through : 1; |
93 | unsigned page_cache_disable : 1; |
95 | unsigned page_cache_disable : 1; |
94 | unsigned accessed : 1; |
96 | unsigned accessed : 1; |
95 | unsigned dirty : 1; |
97 | unsigned dirty : 1; |
96 | unsigned unused: 1; |
98 | unsigned unused: 1; |
97 | unsigned global : 1; |
99 | unsigned global : 1; |
98 | unsigned soft_valid : 1; /**< Valid content even if present bit is cleared. */ |
100 | unsigned soft_valid : 1; /**< Valid content even if present bit is cleared. */ |
99 | unsigned avl : 2; |
101 | unsigned avl : 2; |
100 | unsigned addr_12_31 : 30; |
102 | unsigned addr_12_31 : 30; |
101 | unsigned addr_32_51 : 21; |
103 | unsigned addr_32_51 : 21; |
102 | unsigned no_execute : 1; |
104 | unsigned no_execute : 1; |
103 | } __attribute__ ((packed)); |
105 | } __attribute__ ((packed)); |
104 | 106 | ||
105 | static inline int get_pt_flags(pte_t *pt, index_t i) |
107 | static inline int get_pt_flags(pte_t *pt, index_t i) |
106 | { |
108 | { |
107 | pte_t *p = &pt[i]; |
109 | pte_t *p = &pt[i]; |
108 | 110 | ||
109 | return ( |
111 | return ( |
110 | (!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT | |
112 | (!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT | |
111 | (!p->present)<<PAGE_PRESENT_SHIFT | |
113 | (!p->present)<<PAGE_PRESENT_SHIFT | |
112 | p->uaccessible<<PAGE_USER_SHIFT | |
114 | p->uaccessible<<PAGE_USER_SHIFT | |
113 | 1<<PAGE_READ_SHIFT | |
115 | 1<<PAGE_READ_SHIFT | |
114 | p->writeable<<PAGE_WRITE_SHIFT | |
116 | p->writeable<<PAGE_WRITE_SHIFT | |
115 | (!p->no_execute)<<PAGE_EXEC_SHIFT | |
117 | (!p->no_execute)<<PAGE_EXEC_SHIFT | |
116 | p->global<<PAGE_GLOBAL_SHIFT |
118 | p->global<<PAGE_GLOBAL_SHIFT |
117 | ); |
119 | ); |
118 | } |
120 | } |
119 | 121 | ||
120 | static inline void set_pt_addr(pte_t *pt, index_t i, __address a) |
122 | static inline void set_pt_addr(pte_t *pt, index_t i, __address a) |
121 | { |
123 | { |
122 | pte_t *p = &pt[i]; |
124 | pte_t *p = &pt[i]; |
123 | 125 | ||
124 | p->addr_12_31 = (a >> 12) & 0xfffff; |
126 | p->addr_12_31 = (a >> 12) & 0xfffff; |
125 | p->addr_32_51 = a >> 32; |
127 | p->addr_32_51 = a >> 32; |
126 | } |
128 | } |
127 | 129 | ||
128 | static inline void set_pt_flags(pte_t *pt, index_t i, int flags) |
130 | static inline void set_pt_flags(pte_t *pt, index_t i, int flags) |
129 | { |
131 | { |
130 | pte_t *p = &pt[i]; |
132 | pte_t *p = &pt[i]; |
131 | 133 | ||
132 | p->page_cache_disable = !(flags & PAGE_CACHEABLE); |
134 | p->page_cache_disable = !(flags & PAGE_CACHEABLE); |
133 | p->present = !(flags & PAGE_NOT_PRESENT); |
135 | p->present = !(flags & PAGE_NOT_PRESENT); |
134 | p->uaccessible = (flags & PAGE_USER) != 0; |
136 | p->uaccessible = (flags & PAGE_USER) != 0; |
135 | p->writeable = (flags & PAGE_WRITE) != 0; |
137 | p->writeable = (flags & PAGE_WRITE) != 0; |
136 | p->no_execute = (flags & PAGE_EXEC) == 0; |
138 | p->no_execute = (flags & PAGE_EXEC) == 0; |
137 | p->global = (flags & PAGE_GLOBAL) != 0; |
139 | p->global = (flags & PAGE_GLOBAL) != 0; |
138 | 140 | ||
139 | /* |
141 | /* |
140 | * Ensure that there is at least one bit set even if the present bit is cleared. |
142 | * Ensure that there is at least one bit set even if the present bit is cleared. |
141 | */ |
143 | */ |
142 | p->soft_valid = 1; |
144 | p->soft_valid = 1; |
143 | } |
145 | } |
144 | 146 | ||
145 | extern void page_arch_init(void); |
147 | extern void page_arch_init(void); |
146 | 148 | ||
147 | #endif /* __ASM__ */ |
149 | #endif /* __ASM__ */ |
148 | 150 | ||
149 | #endif /* KERNEL */ |
151 | #endif /* KERNEL */ |
150 | 152 | ||
151 | #endif |
153 | #endif |
152 | 154 |