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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2003-2004 Jakub Jermar |
| 1 | jermar | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 1769 | jermar | 29 | /** @addtogroup mips32mm |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 1888 | jermar | 35 | #ifndef KERN_mips32_TLB_H_ |
| 36 | #define KERN_mips32_TLB_H_ |
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| 1 | jermar | 37 | |
| 317 | palkovsky | 38 | #include <arch/exception.h> |
| 39 | |||
| 600 | jermar | 40 | #ifdef TLBCNT |
| 41 | # define TLB_ENTRY_COUNT TLBCNT |
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| 42 | #else |
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| 43 | # define TLB_ENTRY_COUNT 48 |
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| 44 | #endif |
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| 389 | jermar | 45 | |
| 46 | #define TLB_WIRED 1 |
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| 47 | #define TLB_KSTACK_WIRED_INDEX 0 |
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| 48 | |||
| 49 | #define TLB_PAGE_MASK_16K (0x3<<13) |
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| 50 | |||
| 121 | jermar | 51 | #define PAGE_UNCACHED 2 |
| 52 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
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| 53 | |||
| 2089 | decky | 54 | typedef union { |
| 396 | jermar | 55 | struct { |
| 849 | palkovsky | 56 | #ifdef BIG_ENDIAN |
| 57 | unsigned : 2; /* zero */ |
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| 58 | unsigned pfn : 24; /* frame number */ |
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| 59 | unsigned c : 3; /* cache coherency attribute */ |
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| 60 | unsigned d : 1; /* dirty/write-protect bit */ |
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| 61 | unsigned v : 1; /* valid bit */ |
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| 396 | jermar | 62 | unsigned g : 1; /* global bit */ |
| 849 | palkovsky | 63 | #else |
| 64 | unsigned g : 1; /* global bit */ |
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| 396 | jermar | 65 | unsigned v : 1; /* valid bit */ |
| 66 | unsigned d : 1; /* dirty/write-protect bit */ |
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| 67 | unsigned c : 3; /* cache coherency attribute */ |
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| 68 | unsigned pfn : 24; /* frame number */ |
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| 399 | jermar | 69 | unsigned : 2; /* zero */ |
| 849 | palkovsky | 70 | #endif |
| 396 | jermar | 71 | } __attribute__ ((packed)); |
| 1780 | jermar | 72 | uint32_t value; |
| 2089 | decky | 73 | } entry_lo_t; |
| 1 | jermar | 74 | |
| 2089 | decky | 75 | typedef union { |
| 396 | jermar | 76 | struct { |
| 849 | palkovsky | 77 | #ifdef BIG_ENDIAN |
| 78 | unsigned vpn2 : 19; |
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| 79 | unsigned : 5; |
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| 396 | jermar | 80 | unsigned asid : 8; |
| 849 | palkovsky | 81 | #else |
| 82 | unsigned asid : 8; |
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| 396 | jermar | 83 | unsigned : 5; |
| 84 | unsigned vpn2 : 19; |
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| 849 | palkovsky | 85 | #endif |
| 396 | jermar | 86 | } __attribute__ ((packed)); |
| 1780 | jermar | 87 | uint32_t value; |
| 2089 | decky | 88 | } entry_hi_t; |
| 1 | jermar | 89 | |
| 2089 | decky | 90 | typedef union { |
| 396 | jermar | 91 | struct { |
| 849 | palkovsky | 92 | #ifdef BIG_ENDIAN |
| 93 | unsigned : 7; |
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| 94 | unsigned mask : 12; |
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| 396 | jermar | 95 | unsigned : 13; |
| 849 | palkovsky | 96 | #else |
| 97 | unsigned : 13; |
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| 396 | jermar | 98 | unsigned mask : 12; |
| 99 | unsigned : 7; |
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| 849 | palkovsky | 100 | #endif |
| 396 | jermar | 101 | } __attribute__ ((packed)); |
| 1780 | jermar | 102 | uint32_t value; |
| 2089 | decky | 103 | } page_mask_t; |
| 1 | jermar | 104 | |
| 2089 | decky | 105 | typedef union { |
| 396 | jermar | 106 | struct { |
| 849 | palkovsky | 107 | #ifdef BIG_ENDIAN |
| 108 | unsigned p : 1; |
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| 109 | unsigned : 27; |
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| 396 | jermar | 110 | unsigned index : 4; |
| 849 | palkovsky | 111 | #else |
| 112 | unsigned index : 4; |
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| 396 | jermar | 113 | unsigned : 27; |
| 114 | unsigned p : 1; |
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| 849 | palkovsky | 115 | #endif |
| 396 | jermar | 116 | } __attribute__ ((packed)); |
| 1780 | jermar | 117 | uint32_t value; |
| 2089 | decky | 118 | } tlb_index_t; |
| 1 | jermar | 119 | |
| 394 | jermar | 120 | /** Probe TLB for Matching Entry |
| 121 | * |
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| 122 | * Probe TLB for Matching Entry. |
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| 123 | */ |
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| 124 | static inline void tlbp(void) |
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| 125 | { |
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| 2082 | decky | 126 | asm volatile ("tlbp\n\t"); |
| 394 | jermar | 127 | } |
| 121 | jermar | 128 | |
| 394 | jermar | 129 | |
| 389 | jermar | 130 | /** Read Indexed TLB Entry |
| 131 | * |
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| 132 | * Read Indexed TLB Entry. |
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| 133 | */ |
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| 134 | static inline void tlbr(void) |
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| 135 | { |
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| 2082 | decky | 136 | asm volatile ("tlbr\n\t"); |
| 389 | jermar | 137 | } |
| 138 | |||
| 139 | /** Write Indexed TLB Entry |
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| 140 | * |
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| 141 | * Write Indexed TLB Entry. |
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| 142 | */ |
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| 143 | static inline void tlbwi(void) |
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| 144 | { |
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| 2082 | decky | 145 | asm volatile ("tlbwi\n\t"); |
| 389 | jermar | 146 | } |
| 147 | |||
| 148 | /** Write Random TLB Entry |
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| 149 | * |
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| 150 | * Write Random TLB Entry. |
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| 151 | */ |
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| 152 | static inline void tlbwr(void) |
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| 153 | { |
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| 2082 | decky | 154 | asm volatile ("tlbwr\n\t"); |
| 389 | jermar | 155 | } |
| 156 | |||
| 599 | jermar | 157 | #define tlb_invalidate(asid) tlb_invalidate_asid(asid) |
| 158 | |||
| 958 | jermar | 159 | extern void tlb_invalid(istate_t *istate); |
| 160 | extern void tlb_refill(istate_t *istate); |
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| 161 | extern void tlb_modified(istate_t *istate); |
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| 1 | jermar | 162 | |
| 163 | #endif |
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| 1702 | cejka | 164 | |
| 1769 | jermar | 165 | /** @} |
| 1702 | cejka | 166 | */ |