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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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 | { |
| 3766 | jermar | 44 | vhpt_base = frame_alloc(VHPT_WIDTH - FRAME_WIDTH, |
| 45 | FRAME_KA | FRAME_ATOMIC); |
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| 2089 | decky | 46 | if (!vhpt_base) |
| 1767 | palkovsky | 47 | panic("Kernel configured with VHPT but no memory for table."); |
| 1210 | vana | 48 | vhpt_invalidate_all(); |
| 1780 | jermar | 49 | return (uintptr_t) vhpt_base; |
| 1210 | vana | 50 | } |
| 51 | |||
| 52 | |||
| 1780 | jermar | 53 | void vhpt_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry) |
| 1210 | vana | 54 | { |
| 55 | region_register rr_save, rr; |
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| 4490 | decky | 56 | size_t vrn; |
| 1210 | vana | 57 | rid_t rid; |
| 1780 | jermar | 58 | uint64_t tag; |
| 1210 | vana | 59 | |
| 60 | vhpt_entry_t *ventry; |
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| 61 | |||
| 62 | |||
| 63 | vrn = va >> VRN_SHIFT; |
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| 64 | rid = ASID2RID(asid, vrn); |
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| 65 | |||
| 2089 | decky | 66 | rr_save.word = rr_read(vrn); |
| 67 | rr.word = rr_save.word; |
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| 68 | rr.map.rid = rid; |
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| 69 | rr_write(vrn, rr.word); |
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| 70 | srlz_i(); |
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| 1210 | vana | 71 | |
| 72 | ventry = (vhpt_entry_t *) thash(va); |
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| 2089 | decky | 73 | tag = ttag(va); |
| 74 | rr_write(vrn, rr_save.word); |
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| 75 | srlz_i(); |
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| 76 | srlz_d(); |
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| 1210 | vana | 77 | |
| 2089 | decky | 78 | ventry->word[0] = entry.word[0]; |
| 79 | ventry->word[1] = entry.word[1]; |
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| 1210 | vana | 80 | ventry->present.tag.tag_word = tag; |
| 81 | } |
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| 82 | |||
| 83 | void vhpt_invalidate_all() |
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| 84 | { |
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| 3104 | svoboda | 85 | memsetb(vhpt_base, 1 << VHPT_WIDTH, 0); |
| 1210 | vana | 86 | } |
| 87 | |||
| 88 | void vhpt_invalidate_asid(asid_t asid) |
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| 89 | { |
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| 90 | vhpt_invalidate_all(); |
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| 91 | } |
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| 92 | |||
| 1850 | jermar | 93 | /** @} |
| 1702 | cejka | 94 | */ |