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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 | } |