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| Rev | Author | Line No. | Line |
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| 570 | jermar | 1 | /* |
| 2 | * Copyright (C) 2005 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 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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| 30 | #include <mm/tlb.h> |
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| 31 | #include <print.h> |
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| 617 | jermar | 32 | #include <arch/types.h> |
| 33 | #include <typedefs.h> |
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| 570 | jermar | 34 | |
| 35 | void tlb_arch_init(void) |
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| 36 | { |
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| 37 | } |
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| 38 | |||
| 39 | /** Print contents of both TLBs. */ |
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| 40 | void tlb_print(void) |
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| 41 | { |
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| 42 | int i; |
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| 43 | tlb_data_t d; |
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| 44 | tlb_tag_read_reg_t t; |
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| 45 | |||
| 46 | printf("I-TLB contents:\n"); |
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| 47 | for (i = 0; i < ITLB_ENTRY_COUNT; i++) { |
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| 48 | d.value = itlb_data_access_read(i); |
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| 613 | jermar | 49 | t.value = itlb_tag_read_read(i); |
| 570 | jermar | 50 | |
| 617 | jermar | 51 | printf("%d: vpn=%Q, context=%d, v=%d, size=%d, nfo=%d, ie=%d, soft2=%X, diag=%X, pfn=%X, soft=%X, l=%d, cp=%d, cv=%d, e=%d, p=%d, w=%d, g=%d\n", |
| 52 | i, t.vpn, t.context, d.v, d.size, d.nfo, d.ie, d.soft2, d.diag, d.pfn, d.soft, d.l, d.cp, d.cv, d.e, d.p, d.w, d.g); |
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| 570 | jermar | 53 | } |
| 54 | |||
| 55 | printf("D-TLB contents:\n"); |
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| 56 | for (i = 0; i < DTLB_ENTRY_COUNT; i++) { |
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| 57 | d.value = dtlb_data_access_read(i); |
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| 613 | jermar | 58 | t.value = dtlb_tag_read_read(i); |
| 570 | jermar | 59 | |
| 617 | jermar | 60 | printf("%d: vpn=%Q, context=%d, v=%d, size=%d, nfo=%d, ie=%d, soft2=%X, diag=%X, pfn=%X, soft=%X, l=%d, cp=%d, cv=%d, e=%d, p=%d, w=%d, g=%d\n", |
| 61 | i, t.vpn, t.context, d.v, d.size, d.nfo, d.ie, d.soft2, d.diag, d.pfn, d.soft, d.l, d.cp, d.cv, d.e, d.p, d.w, d.g); |
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| 570 | jermar | 62 | } |
| 63 | |||
| 64 | } |
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| 617 | jermar | 65 | |
| 66 | /** Invalidate all unlocked ITLB and DTLB entries. */ |
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| 67 | void tlb_invalidate_all(void) |
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| 68 | { |
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| 69 | int i; |
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| 70 | tlb_data_t d; |
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| 71 | tlb_tag_read_reg_t t; |
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| 72 | |||
| 73 | for (i = 0; i < ITLB_ENTRY_COUNT; i++) { |
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| 74 | d.value = itlb_data_access_read(i); |
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| 75 | if (!d.l) { |
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| 76 | printf("invalidating "); |
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| 77 | t.value = itlb_tag_read_read(i); |
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| 78 | d.v = false; |
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| 79 | itlb_tag_access_write(t.value); |
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| 80 | itlb_data_access_write(i, d.value); |
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| 81 | } |
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| 82 | } |
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| 83 | |||
| 84 | for (i = 0; i < DTLB_ENTRY_COUNT; i++) { |
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| 85 | d.value = dtlb_data_access_read(i); |
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| 86 | if (!d.l) { |
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| 87 | t.value = dtlb_tag_read_read(i); |
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| 88 | d.v = false; |
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| 89 | dtlb_tag_access_write(t.value); |
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| 90 | dtlb_data_access_write(i, d.value); |
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| 91 | } |
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| 92 | } |
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| 93 | |||
| 94 | } |
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| 95 | |||
| 96 | /** Invalidate all ITLB and DTLB entries that belong to specified ASID (Context). |
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| 97 | * |
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| 98 | * @param asid Address Space ID. |
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| 99 | */ |
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| 100 | void tlb_invalidate_asid(asid_t asid) |
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| 101 | { |
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| 102 | /* TODO: write asid to some Context register and encode the register in second parameter below. */ |
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| 103 | itlb_demap(TLB_DEMAP_CONTEXT, TLB_DEMAP_NUCLEUS, 0); |
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| 104 | dtlb_demap(TLB_DEMAP_CONTEXT, TLB_DEMAP_NUCLEUS, 0); |
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| 105 | } |
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| 106 | |||
| 107 | /** Invalidate all ITLB and DLTB entries for specified page in specified address space. |
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| 108 | * |
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| 109 | * @param asid Address Space ID. |
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| 110 | * @param page Page which to sweep out from ITLB and DTLB. |
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| 111 | */ |
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| 112 | void tlb_invalidate_page(asid_t asid, __address page) |
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| 113 | { |
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| 114 | /* TODO: write asid to some Context register and encode the register in second parameter below. */ |
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| 115 | itlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, page); |
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| 116 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, page); |
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| 117 | } |