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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 319 | 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 | |||
| 29 | #include <arch/mm/tlb.h> |
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| 130 | decky | 30 | #include <arch/mm/asid.h> |
| 1 | jermar | 31 | #include <mm/tlb.h> |
| 32 | #include <arch/cp0.h> |
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| 33 | #include <panic.h> |
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| 34 | #include <arch.h> |
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| 268 | palkovsky | 35 | #include <symtab.h> |
| 36 | |||
| 389 | jermar | 37 | void tlb_init_arch(void) |
| 38 | { |
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| 39 | int i; |
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| 40 | |||
| 41 | cp0_pagemask_write(TLB_PAGE_MASK_16K); |
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| 42 | cp0_entry_hi_write(0); |
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| 43 | cp0_entry_lo0_write(0); |
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| 44 | cp0_entry_lo1_write(0); |
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| 45 | |||
| 46 | /* |
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| 47 | * Invalidate all entries. |
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| 48 | */ |
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| 49 | for (i = 0; i < TLB_SIZE; i++) { |
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| 50 | cp0_index_write(0); |
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| 51 | tlbwi(); |
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| 52 | } |
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| 53 | |||
| 54 | /* |
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| 55 | * The kernel is going to make use of some wired |
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| 56 | * entries (e.g. mapping kernel stacks). |
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| 57 | */ |
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| 58 | cp0_wired_write(TLB_WIRED); |
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| 59 | } |
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| 60 | |||
| 317 | palkovsky | 61 | void tlb_refill(struct exception_regdump *pstate) |
| 1 | jermar | 62 | { |
| 324 | palkovsky | 63 | char *symbol = ""; |
| 64 | char *sym2 = ""; |
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| 65 | |||
| 332 | palkovsky | 66 | char *s = get_symtab_entry(pstate->epc); |
| 67 | if (s) |
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| 68 | symbol = s; |
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| 69 | s = get_symtab_entry(pstate->ra); |
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| 70 | if (s) |
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| 71 | sym2 = s; |
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| 389 | jermar | 72 | panic("%X: TLB Refill Exception at %X(%s<-%s)\n", cp0_badvaddr_read(), |
| 73 | pstate->epc, symbol, sym2); |
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| 1 | jermar | 74 | } |
| 75 | |||
| 317 | palkovsky | 76 | void tlb_invalid(struct exception_regdump *pstate) |
| 1 | jermar | 77 | { |
| 268 | palkovsky | 78 | char *symbol = ""; |
| 79 | |||
| 332 | palkovsky | 80 | char *s = get_symtab_entry(pstate->epc); |
| 81 | if (s) |
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| 82 | symbol = s; |
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| 389 | jermar | 83 | panic("%X: TLB Invalid Exception at %X(%s)\n", cp0_badvaddr_read(), |
| 317 | palkovsky | 84 | pstate->epc, symbol); |
| 1 | jermar | 85 | } |
| 86 | |||
| 389 | jermar | 87 | void tlb_modified(struct exception_regdump *pstate) |
| 88 | { |
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| 89 | char *symbol = ""; |
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| 90 | |||
| 91 | char *s = get_symtab_entry(pstate->epc); |
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| 92 | if (s) |
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| 93 | symbol = s; |
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| 94 | panic("%X: TLB Modified Exception at %X(%s)\n", cp0_badvaddr_read(), |
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| 95 | pstate->epc, symbol); |
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| 96 | } |
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| 97 | |||
| 98 | |||
| 1 | jermar | 99 | void tlb_invalidate(int asid) |
| 100 | { |
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| 130 | decky | 101 | pri_t pri; |
| 102 | |||
| 103 | pri = cpu_priority_high(); |
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| 104 | |||
| 240 | palkovsky | 105 | // asid_bitmap_reset(); |
| 130 | decky | 106 | |
| 107 | // TODO |
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| 108 | |||
| 109 | cpu_priority_restore(pri); |
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| 1 | jermar | 110 | } |