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| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 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 | #ifndef __ia32_PAGE_H__ |
29 | #ifndef __ia32_PAGE_H__ |
| 30 | #define __ia32_PAGE_H__ |
30 | #define __ia32_PAGE_H__ |
| 31 | 31 | ||
| 32 | #include <arch/types.h> |
32 | #include <arch/types.h> |
| 33 | #include <arch/mm/frame.h> |
33 | #include <arch/mm/frame.h> |
| 34 | 34 | ||
| 35 | #define PAGE_SIZE FRAME_SIZE |
35 | #define PAGE_SIZE FRAME_SIZE |
| 36 | 36 | ||
| 37 | #define KA2PA(x) ((x) - 0x80000000) |
37 | #define KA2PA(x) ((x) - 0x80000000) |
| 38 | #define PA2KA(x) ((x) + 0x80000000) |
38 | #define PA2KA(x) ((x) + 0x80000000) |
| 39 | 39 | ||
| - | 40 | /* |
|
| - | 41 | * Implementation of generic 4-level page table interface. |
|
| - | 42 | * IA-32 has 2-level page tables, so PTL1 and PTL2 are left out. |
|
| - | 43 | */ |
|
| - | 44 | #define PTL0_INDEX_ARCH(vaddr) (((vaddr)>>22)&0x3ff) |
|
| - | 45 | #define PTL1_INDEX_ARCH(vaddr) 0 |
|
| - | 46 | #define PTL2_INDEX_ARCH(vaddr) 0 |
|
| - | 47 | #define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x3ff) |
|
| - | 48 | ||
| - | 49 | #define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t *)((((pte_t *)(ptl0))[(i)].frame_address)<<12)) |
|
| - | 50 | #define GET_PTL2_ADDRESS_ARCH(ptl1, i) (ptl1) |
|
| - | 51 | #define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2) |
|
| - | 52 | #define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((__address)((((pte_t *)(ptl3))[(i)].frame_address)<<12)) |
|
| - | 53 | ||
| - | 54 | ||
| 40 | struct page_specifier { |
55 | struct page_specifier { |
| 41 | unsigned present : 1; |
56 | unsigned present : 1; |
| 42 | unsigned writeable : 1; |
57 | unsigned writeable : 1; |
| 43 | unsigned uaccessible : 1; |
58 | unsigned uaccessible : 1; |
| 44 | unsigned page_write_through : 1; |
59 | unsigned page_write_through : 1; |
| 45 | unsigned page_cache_disable : 1; |
60 | unsigned page_cache_disable : 1; |
| 46 | unsigned accessed : 1; |
61 | unsigned accessed : 1; |
| 47 | unsigned dirty : 1; |
62 | unsigned dirty : 1; |
| 48 | unsigned : 2; |
63 | unsigned : 2; |
| 49 | unsigned avl : 3; |
64 | unsigned avl : 3; |
| 50 | unsigned frame_address : 20; |
65 | unsigned frame_address : 20; |
| 51 | } __attribute__ ((packed)); |
66 | } __attribute__ ((packed)); |
| 52 | 67 | ||
| - | 68 | typedef struct page_specifier pte_t; |
|
| - | 69 | ||
| 53 | extern void page_arch_init(void); |
70 | extern void page_arch_init(void); |
| 54 | 71 | ||
| 55 | #endif |
72 | #endif |
| 56 | 73 | ||