Rev 341 | Rev 391 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1 | jermar | 1 | /* |
319 | jermar | 2 | * Copyright (C) 2003-2004 Jakub Jermar |
1 | jermar | 3 | * All rights reserved. |
4 | * |
||
5 | * Redistribution and use in source and binary forms, with or without |
||
6 | * modification, are permitted provided that the following conditions |
||
7 | * are met: |
||
8 | * |
||
9 | * - Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * - Redistributions in binary form must reproduce the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer in the |
||
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 |
||
15 | * derived from this software without specific prior written permission. |
||
16 | * |
||
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 |
||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
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 |
||
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 |
||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | */ |
||
28 | |||
341 | jermar | 29 | #ifndef __mips32_TLB_H__ |
30 | #define __mips32_TLB_H__ |
||
1 | jermar | 31 | |
317 | palkovsky | 32 | #include <arch/exception.h> |
33 | |||
389 | jermar | 34 | #define TLB_SIZE 48 |
35 | |||
36 | #define TLB_WIRED 1 |
||
37 | #define TLB_KSTACK_WIRED_INDEX 0 |
||
38 | |||
39 | #define TLB_PAGE_MASK_16K (0x3<<13) |
||
40 | |||
121 | jermar | 41 | #define PAGE_UNCACHED 2 |
42 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
||
43 | |||
1 | jermar | 44 | struct entry_lo { |
121 | jermar | 45 | unsigned g : 1; /* global bit */ |
46 | unsigned v : 1; /* valid bit */ |
||
47 | unsigned d : 1; /* dirty/write-protect bit */ |
||
48 | unsigned c : 3; /* cache coherency attribute */ |
||
49 | unsigned pfn : 24; /* frame number */ |
||
1 | jermar | 50 | unsigned : 2; |
51 | } __attribute__ ((packed)); |
||
52 | |||
53 | struct entry_hi { |
||
54 | unsigned asid : 8; |
||
55 | unsigned : 4; |
||
56 | unsigned g : 1; |
||
57 | unsigned vpn2 : 19; |
||
58 | } __attribute__ ((packed)); |
||
59 | |||
60 | struct page_mask { |
||
61 | unsigned : 13; |
||
62 | unsigned mask : 12; |
||
63 | unsigned : 7; |
||
64 | } __attribute__ ((packed)); |
||
65 | |||
66 | struct tlb_entry { |
||
67 | struct entry_lo lo0; |
||
68 | struct entry_lo lo1; |
||
69 | struct entry_hi hi; |
||
70 | struct page_mask mask; |
||
71 | } __attribute__ ((packed)); |
||
72 | |||
121 | jermar | 73 | typedef struct entry_lo pte_t; |
74 | |||
389 | jermar | 75 | /** Read Indexed TLB Entry |
76 | * |
||
77 | * Read Indexed TLB Entry. |
||
78 | */ |
||
79 | static inline void tlbr(void) |
||
80 | { |
||
81 | __asm__ volatile ("tlbr\n\t"); |
||
82 | } |
||
83 | |||
84 | /** Write Indexed TLB Entry |
||
85 | * |
||
86 | * Write Indexed TLB Entry. |
||
87 | */ |
||
88 | static inline void tlbwi(void) |
||
89 | { |
||
90 | __asm__ volatile ("tlbwi\n\t"); |
||
91 | } |
||
92 | |||
93 | /** Write Random TLB Entry |
||
94 | * |
||
95 | * Write Random TLB Entry. |
||
96 | */ |
||
97 | static inline void tlbwr(void) |
||
98 | { |
||
99 | __asm__ volatile ("tlbwr\n\t"); |
||
100 | } |
||
101 | |||
317 | palkovsky | 102 | extern void tlb_invalid(struct exception_regdump *pstate); |
103 | extern void tlb_refill(struct exception_regdump *pstate); |
||
389 | jermar | 104 | extern void tlb_modified(struct exception_regdump *pstate); |
1 | jermar | 105 | |
106 | #endif |