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1290 | vana | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2006 Jakub Vana |
1290 | vana | 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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1702 | cejka | 27 | */ |
28 | |||
1850 | jermar | 29 | /** @addtogroup ia64mm |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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1290 | vana | 33 | */ |
34 | |||
2089 | decky | 35 | #include <memstr.h> |
1210 | vana | 36 | #include <arch/mm/vhpt.h> |
37 | #include <mm/frame.h> |
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38 | #include <print.h> |
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39 | |||
40 | static vhpt_entry_t* vhpt_base; |
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41 | |||
1780 | jermar | 42 | uintptr_t vhpt_set_up(void) |
1210 | vana | 43 | { |
2089 | decky | 44 | vhpt_base = frame_alloc(VHPT_WIDTH - FRAME_WIDTH, FRAME_KA | FRAME_ATOMIC); |
45 | if (!vhpt_base) |
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1767 | palkovsky | 46 | panic("Kernel configured with VHPT but no memory for table."); |
1210 | vana | 47 | vhpt_invalidate_all(); |
1780 | jermar | 48 | return (uintptr_t) vhpt_base; |
1210 | vana | 49 | } |
50 | |||
51 | |||
1780 | jermar | 52 | void vhpt_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry) |
1210 | vana | 53 | { |
54 | region_register rr_save, rr; |
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55 | index_t vrn; |
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56 | rid_t rid; |
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1780 | jermar | 57 | uint64_t tag; |
1210 | vana | 58 | |
59 | vhpt_entry_t *ventry; |
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60 | |||
61 | |||
62 | vrn = va >> VRN_SHIFT; |
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63 | rid = ASID2RID(asid, vrn); |
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64 | |||
2089 | decky | 65 | rr_save.word = rr_read(vrn); |
66 | rr.word = rr_save.word; |
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67 | rr.map.rid = rid; |
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68 | rr_write(vrn, rr.word); |
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69 | srlz_i(); |
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1210 | vana | 70 | |
71 | ventry = (vhpt_entry_t *) thash(va); |
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2089 | decky | 72 | tag = ttag(va); |
73 | rr_write(vrn, rr_save.word); |
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74 | srlz_i(); |
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75 | srlz_d(); |
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1210 | vana | 76 | |
2089 | decky | 77 | ventry->word[0] = entry.word[0]; |
78 | ventry->word[1] = entry.word[1]; |
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1210 | vana | 79 | ventry->present.tag.tag_word = tag; |
80 | } |
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81 | |||
82 | void vhpt_invalidate_all() |
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83 | { |
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3424 | svoboda | 84 | memsetb(vhpt_base, 1 << VHPT_WIDTH, 0); |
1210 | vana | 85 | } |
86 | |||
87 | void vhpt_invalidate_asid(asid_t asid) |
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88 | { |
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89 | vhpt_invalidate_all(); |
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90 | } |
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91 | |||
1850 | jermar | 92 | /** @} |
1702 | cejka | 93 | */ |