Rev 2089 | Rev 3230 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | jermar | 1 | /* |
| 2071 | 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 | |||
| 1769 | jermar | 29 | /** @addtogroup mips32mm |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
||
| 32 | /** @file |
||
| 33 | */ |
||
| 34 | |||
| 1888 | jermar | 35 | #ifndef KERN_mips32_TLB_H_ |
| 36 | #define KERN_mips32_TLB_H_ |
||
| 1 | jermar | 37 | |
| 3228 | decky | 38 | #include <arch/types.h> |
| 39 | #include <typedefs.h> |
||
| 40 | #include <arch/mm/asid.h> |
||
| 317 | palkovsky | 41 | #include <arch/exception.h> |
| 42 | |||
| 600 | jermar | 43 | #ifdef TLBCNT |
| 44 | # define TLB_ENTRY_COUNT TLBCNT |
||
| 45 | #else |
||
| 46 | # define TLB_ENTRY_COUNT 48 |
||
| 47 | #endif |
||
| 389 | jermar | 48 | |
| 49 | #define TLB_WIRED 1 |
||
| 50 | #define TLB_KSTACK_WIRED_INDEX 0 |
||
| 51 | |||
| 3228 | decky | 52 | #define TLB_PAGE_MASK_16K (0x3 << 13) |
| 389 | jermar | 53 | |
| 121 | jermar | 54 | #define PAGE_UNCACHED 2 |
| 55 | #define PAGE_CACHEABLE_EXC_WRITE 5 |
||
| 56 | |||
| 2089 | decky | 57 | typedef union { |
| 396 | jermar | 58 | struct { |
| 849 | palkovsky | 59 | #ifdef BIG_ENDIAN |
| 60 | unsigned : 2; /* zero */ |
||
| 61 | unsigned pfn : 24; /* frame number */ |
||
| 62 | unsigned c : 3; /* cache coherency attribute */ |
||
| 63 | unsigned d : 1; /* dirty/write-protect bit */ |
||
| 64 | unsigned v : 1; /* valid bit */ |
||
| 396 | jermar | 65 | unsigned g : 1; /* global bit */ |
| 849 | palkovsky | 66 | #else |
| 67 | unsigned g : 1; /* global bit */ |
||
| 396 | jermar | 68 | unsigned v : 1; /* valid bit */ |
| 69 | unsigned d : 1; /* dirty/write-protect bit */ |
||
| 70 | unsigned c : 3; /* cache coherency attribute */ |
||
| 71 | unsigned pfn : 24; /* frame number */ |
||
| 399 | jermar | 72 | unsigned : 2; /* zero */ |
| 849 | palkovsky | 73 | #endif |
| 396 | jermar | 74 | } __attribute__ ((packed)); |
| 1780 | jermar | 75 | uint32_t value; |
| 2089 | decky | 76 | } entry_lo_t; |
| 1 | jermar | 77 | |
| 2089 | decky | 78 | typedef union { |
| 396 | jermar | 79 | struct { |
| 849 | palkovsky | 80 | #ifdef BIG_ENDIAN |
| 81 | unsigned vpn2 : 19; |
||
| 82 | unsigned : 5; |
||
| 396 | jermar | 83 | unsigned asid : 8; |
| 849 | palkovsky | 84 | #else |
| 85 | unsigned asid : 8; |
||
| 396 | jermar | 86 | unsigned : 5; |
| 87 | unsigned vpn2 : 19; |
||
| 849 | palkovsky | 88 | #endif |
| 396 | jermar | 89 | } __attribute__ ((packed)); |
| 1780 | jermar | 90 | uint32_t value; |
| 2089 | decky | 91 | } entry_hi_t; |
| 1 | jermar | 92 | |
| 2089 | decky | 93 | typedef union { |
| 396 | jermar | 94 | struct { |
| 849 | palkovsky | 95 | #ifdef BIG_ENDIAN |
| 96 | unsigned : 7; |
||
| 97 | unsigned mask : 12; |
||
| 396 | jermar | 98 | unsigned : 13; |
| 849 | palkovsky | 99 | #else |
| 100 | unsigned : 13; |
||
| 396 | jermar | 101 | unsigned mask : 12; |
| 102 | unsigned : 7; |
||
| 849 | palkovsky | 103 | #endif |
| 396 | jermar | 104 | } __attribute__ ((packed)); |
| 1780 | jermar | 105 | uint32_t value; |
| 2089 | decky | 106 | } page_mask_t; |
| 1 | jermar | 107 | |
| 2089 | decky | 108 | typedef union { |
| 396 | jermar | 109 | struct { |
| 849 | palkovsky | 110 | #ifdef BIG_ENDIAN |
| 111 | unsigned p : 1; |
||
| 112 | unsigned : 27; |
||
| 396 | jermar | 113 | unsigned index : 4; |
| 849 | palkovsky | 114 | #else |
| 115 | unsigned index : 4; |
||
| 396 | jermar | 116 | unsigned : 27; |
| 117 | unsigned p : 1; |
||
| 849 | palkovsky | 118 | #endif |
| 396 | jermar | 119 | } __attribute__ ((packed)); |
| 1780 | jermar | 120 | uint32_t value; |
| 2089 | decky | 121 | } tlb_index_t; |
| 1 | jermar | 122 | |
| 394 | jermar | 123 | /** Probe TLB for Matching Entry |
| 124 | * |
||
| 125 | * Probe TLB for Matching Entry. |
||
| 126 | */ |
||
| 127 | static inline void tlbp(void) |
||
| 128 | { |
||
| 2082 | decky | 129 | asm volatile ("tlbp\n\t"); |
| 394 | jermar | 130 | } |
| 121 | jermar | 131 | |
| 394 | jermar | 132 | |
| 389 | jermar | 133 | /** Read Indexed TLB Entry |
| 134 | * |
||
| 135 | * Read Indexed TLB Entry. |
||
| 136 | */ |
||
| 137 | static inline void tlbr(void) |
||
| 138 | { |
||
| 2082 | decky | 139 | asm volatile ("tlbr\n\t"); |
| 389 | jermar | 140 | } |
| 141 | |||
| 142 | /** Write Indexed TLB Entry |
||
| 143 | * |
||
| 144 | * Write Indexed TLB Entry. |
||
| 145 | */ |
||
| 146 | static inline void tlbwi(void) |
||
| 147 | { |
||
| 2082 | decky | 148 | asm volatile ("tlbwi\n\t"); |
| 389 | jermar | 149 | } |
| 150 | |||
| 151 | /** Write Random TLB Entry |
||
| 152 | * |
||
| 153 | * Write Random TLB Entry. |
||
| 154 | */ |
||
| 155 | static inline void tlbwr(void) |
||
| 156 | { |
||
| 2082 | decky | 157 | asm volatile ("tlbwr\n\t"); |
| 389 | jermar | 158 | } |
| 159 | |||
| 599 | jermar | 160 | #define tlb_invalidate(asid) tlb_invalidate_asid(asid) |
| 161 | |||
| 958 | jermar | 162 | extern void tlb_invalid(istate_t *istate); |
| 163 | extern void tlb_refill(istate_t *istate); |
||
| 164 | extern void tlb_modified(istate_t *istate); |
||
| 3228 | decky | 165 | extern void tlb_prepare_entry_lo(entry_lo_t *lo, bool g, bool v, bool d, bool cacheable, uintptr_t pfn); |
| 166 | extern void tlb_prepare_entry_hi(entry_hi_t *hi, asid_t asid, uintptr_t addr); |
||
| 1 | jermar | 167 | |
| 168 | #endif |
||
| 1702 | cejka | 169 | |
| 1769 | jermar | 170 | /** @} |
| 1702 | cejka | 171 | */ |