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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 __mips_TLB_H__ |
29 | #ifndef __mips_TLB_H__ |
30 | #define __mips_TLB_H__ |
30 | #define __mips_TLB_H__ |
31 | 31 | ||
- | 32 | #define PAGE_UNCACHED 2 |
|
- | 33 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
|
- | 34 | ||
32 | struct entry_lo { |
35 | struct entry_lo { |
33 | unsigned g : 1; |
36 | unsigned g : 1; /* global bit */ |
34 | unsigned v : 1; |
37 | unsigned v : 1; /* valid bit */ |
35 | unsigned d : 1; |
38 | unsigned d : 1; /* dirty/write-protect bit */ |
36 | unsigned c : 3; |
39 | unsigned c : 3; /* cache coherency attribute */ |
37 | unsigned pfn : 24; |
40 | unsigned pfn : 24; /* frame number */ |
38 | unsigned : 2; |
41 | unsigned : 2; |
39 | } __attribute__ ((packed)); |
42 | } __attribute__ ((packed)); |
40 | 43 | ||
41 | struct entry_hi { |
44 | struct entry_hi { |
42 | unsigned asid : 8; |
45 | unsigned asid : 8; |
43 | unsigned : 4; |
46 | unsigned : 4; |
44 | unsigned g : 1; |
47 | unsigned g : 1; |
45 | unsigned vpn2 : 19; |
48 | unsigned vpn2 : 19; |
46 | } __attribute__ ((packed)); |
49 | } __attribute__ ((packed)); |
47 | 50 | ||
48 | struct page_mask { |
51 | struct page_mask { |
49 | unsigned : 13; |
52 | unsigned : 13; |
50 | unsigned mask : 12; |
53 | unsigned mask : 12; |
51 | unsigned : 7; |
54 | unsigned : 7; |
52 | } __attribute__ ((packed)); |
55 | } __attribute__ ((packed)); |
53 | 56 | ||
54 | struct tlb_entry { |
57 | struct tlb_entry { |
55 | struct entry_lo lo0; |
58 | struct entry_lo lo0; |
56 | struct entry_lo lo1; |
59 | struct entry_lo lo1; |
57 | struct entry_hi hi; |
60 | struct entry_hi hi; |
58 | struct page_mask mask; |
61 | struct page_mask mask; |
59 | } __attribute__ ((packed)); |
62 | } __attribute__ ((packed)); |
60 | 63 | ||
- | 64 | typedef struct entry_lo pte_t; |
|
- | 65 | ||
61 | extern void tlb_refill(void); |
66 | extern void tlb_refill(void); |
62 | extern void tlb_invalid(void); |
67 | extern void tlb_invalid(void); |
63 | 68 | ||
64 | #endif |
69 | #endif |
65 | 70 |