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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 | #ifndef __amd64_PAGE_H__ |
29 | #ifndef __amd64_PAGE_H__ |
30 | #define __amd64_PAGE_H__ |
30 | #define __amd64_PAGE_H__ |
31 | 31 | ||
32 | #ifndef __ASM__ |
32 | #ifndef __ASM__ |
33 | # include <mm/page.h> |
33 | # include <mm/page.h> |
34 | # include <arch/mm/frame.h> |
34 | # include <arch/mm/frame.h> |
35 | # include <arch/types.h> |
35 | # include <arch/types.h> |
36 | #endif |
36 | #endif |
37 | 37 | ||
38 | #define PAGE_SIZE FRAME_SIZE |
38 | #define PAGE_SIZE FRAME_SIZE |
39 | 39 | ||
40 | #ifndef __ASM__ |
40 | #ifndef __ASM__ |
41 | # define KA2PA(x) (((__address) (x)) + 0x80000000) |
41 | # define KA2PA(x) (((__address) (x)) + 0x80000000) |
42 | # define PA2KA(x) (((__address) (x)) - 0x80000000) |
42 | # define PA2KA(x) (((__address) (x)) - 0x80000000) |
43 | #else |
43 | #else |
44 | # define KA2PA(x) ((x) + 0x80000000) |
44 | # define KA2PA(x) ((x) + 0x80000000) |
45 | # define PA2KA(x) ((x)) - 0x80000000) |
45 | //# define PA2KA(x) ((x)) - 0x80000000) |
46 | #endif |
46 | #endif |
47 | 47 | ||
48 | #define PTL0_INDEX_ARCH(vaddr) 0 |
48 | #define PTL0_INDEX_ARCH(vaddr) (((vaddr)>>39)&0x1ff) |
49 | #define PTL1_INDEX_ARCH(vaddr) 0 |
49 | #define PTL1_INDEX_ARCH(vaddr) (((vaddr)>>30)&0x1ff) |
50 | #define PTL2_INDEX_ARCH(vaddr) 0 |
50 | #define PTL2_INDEX_ARCH(vaddr) (((vaddr)>>21)&0x1ff) |
51 | #define PTL3_INDEX_ARCH(vaddr) 0 |
51 | #define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x1ff) |
52 | 52 | ||
53 | #define GET_PTL0_ADDRESS_ARCH() 0 |
53 | #define GET_PTL0_ADDRESS_ARCH() ((pte_t *) read_cr3()) |
54 | #define SET_PTL0_ADDRESS_ARCH(ptl0) |
- | |
55 | - | ||
56 | #define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t *) 0) |
54 | #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 ))) |
57 | #define GET_PTL2_ADDRESS_ARCH(ptl1, i) ((pte_t *) 0) |
55 | #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 ))) |
58 | #define GET_PTL3_ADDRESS_ARCH(ptl2, i) ((pte_t *) 0) |
56 | #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 ))) |
59 | #define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((pte_t *) 0) |
57 | #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 ))) |
60 | 58 | ||
61 | #define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) |
59 | #define SET_PTL0_ADDRESS_ARCH(ptl0) (write_cr3((__address) (ptl0))) |
62 | #define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
60 | #define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) set_pt_addr((pte_t *)(ptl0), (index_t)(i), a) |
- | 61 | #define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) set_pt_addr((pte_t *)(ptl1), (index_t)(i), a) |
|
63 | #define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
62 | #define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) set_pt_addr((pte_t *)(ptl2), (index_t)(i), a) |
64 | #define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) |
63 | #define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) set_pt_addr((pte_t *)(ptl3), (index_t)(i), a) |
65 | 64 | ||
66 | #define GET_PTL1_FLAGS_ARCH(ptl0, i) 0 |
65 | #define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *)(ptl0), (index_t)(i)) |
67 | #define GET_PTL2_FLAGS_ARCH(ptl1, i) 0 |
66 | #define GET_PTL2_FLAGS_ARCH(ptl1, i) get_pt_flags((pte_t *)(ptl1), (index_t)(i)) |
68 | #define GET_PTL3_FLAGS_ARCH(ptl2, i) 0 |
67 | #define GET_PTL3_FLAGS_ARCH(ptl2, i) get_pt_flags((pte_t *)(ptl2), (index_t)(i)) |
69 | #define GET_FRAME_FLAGS_ARCH(ptl3, i) 0 |
68 | #define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *)(ptl3), (index_t)(i)) |
70 | 69 | ||
71 | #define SET_PTL1_FLAGS_ARCH(ptl0, i, x) |
70 | #define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x)) |
72 | #define SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
71 | #define SET_PTL2_FLAGS_ARCH(ptl1, i, x) set_pt_flags((pte_t *)(ptl1), (index_t)(i), (x)) |
73 | #define SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
72 | #define SET_PTL3_FLAGS_ARCH(ptl2, i, x) set_pt_flags((pte_t *)(ptl2), (index_t)(i), (x)) |
74 | #define SET_FRAME_FLAGS_ARCH(ptl3, i, x) |
73 | #define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x)) |
75 | 74 | ||
76 | #ifndef __ASM__ |
75 | #ifndef __ASM__ |
- | 76 | ||
- | 77 | typedef struct page_specifier pte_t; |
|
- | 78 | ||
- | 79 | struct page_specifier { |
|
- | 80 | unsigned present : 1; |
|
- | 81 | unsigned writeable : 1; |
|
- | 82 | unsigned uaccessible : 1; |
|
- | 83 | unsigned page_write_through : 1; |
|
- | 84 | unsigned page_cache_disable : 1; |
|
- | 85 | unsigned accessed : 1; |
|
- | 86 | unsigned dirty : 1; |
|
- | 87 | unsigned unused: 1; |
|
- | 88 | unsigned global : 1; |
|
- | 89 | unsigned avl : 3; |
|
- | 90 | unsigned addr_12_31 : 30; |
|
- | 91 | unsigned addr_32_51 : 21; |
|
- | 92 | unsigned no_execute : 1; |
|
- | 93 | } __attribute__ ((packed)); |
|
- | 94 | ||
- | 95 | static inline int get_pt_flags(pte_t *pt, index_t i) |
|
- | 96 | { |
|
- | 97 | pte_t *p = &pt[i]; |
|
- | 98 | ||
- | 99 | return ( |
|
- | 100 | (!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT | |
|
- | 101 | (!p->present)<<PAGE_PRESENT_SHIFT | |
|
- | 102 | p->uaccessible<<PAGE_USER_SHIFT | |
|
- | 103 | 1<<PAGE_READ_SHIFT | |
|
- | 104 | p->writeable<<PAGE_WRITE_SHIFT | |
|
- | 105 | (!p->no_execute)<<PAGE_EXEC_SHIFT |
|
- | 106 | ); |
|
- | 107 | } |
|
- | 108 | ||
- | 109 | static inline void set_pt_addr(pte_t *pt, index_t i, __address a) |
|
- | 110 | { |
|
- | 111 | pte_t *p = &pt[i]; |
|
- | 112 | ||
- | 113 | p->addr_12_31 = (a >> 12) & 0xfffff; |
|
- | 114 | p->addr_32_51 = a >> 32; |
|
- | 115 | } |
|
- | 116 | ||
- | 117 | static inline void set_pt_flags(pte_t *pt, index_t i, int flags) |
|
- | 118 | { |
|
- | 119 | pte_t *p = &pt[i]; |
|
- | 120 | ||
- | 121 | p->page_cache_disable = !(flags & PAGE_CACHEABLE); |
|
- | 122 | p->present = !(flags & PAGE_NOT_PRESENT); |
|
- | 123 | p->uaccessible = (flags & PAGE_USER) != 0; |
|
- | 124 | p->writeable = (flags & PAGE_WRITE) != 0; |
|
- | 125 | p->no_execute = (flags & PAGE_EXEC) == 0; |
|
- | 126 | } |
|
- | 127 | ||
77 | extern void page_arch_init(void); |
128 | extern void page_arch_init(void); |
78 | 129 | ||
79 | typedef __u64 pte_t; |
- | |
80 | #endif |
130 | #endif |
81 | 131 | ||
82 | #endif |
132 | #endif |
83 | 133 |