Rev 1290 | Rev 1767 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 1290 | vana | 1 | /* |
| 2 | * Copyright (C) 2006 Jakub Vana |
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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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| 1702 | cejka | 27 | */ |
| 28 | |||
| 29 | /** @addtogroup ia64mm |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** @file |
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| 1290 | vana | 33 | */ |
| 34 | |||
| 35 | |||
| 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 | |||
| 41 | static vhpt_entry_t* vhpt_base; |
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| 42 | |||
| 43 | __address vhpt_set_up(void) |
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| 44 | { |
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| 45 | vhpt_base=(vhpt_entry_t*) PA2KA(PFN2ADDR(frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA))); |
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| 46 | if(!vhpt_base) panic("Kernel configured with VHPT but no memory for table."); |
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| 47 | vhpt_invalidate_all(); |
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| 48 | return (__address) vhpt_base; |
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| 49 | } |
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| 50 | |||
| 51 | |||
| 52 | void vhpt_mapping_insert(__address va, asid_t asid, tlb_entry_t entry) |
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| 53 | { |
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| 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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| 57 | __u64 tag; |
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| 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 | |||
| 65 | rr_save.word = rr_read(vrn); |
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| 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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| 70 | |||
| 71 | ventry = (vhpt_entry_t *) thash(va); |
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| 72 | tag = ttag(va); |
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| 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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| 76 | |||
| 77 | ventry->word[0]=entry.word[0]; |
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| 78 | ventry->word[1]=entry.word[1]; |
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| 79 | ventry->present.tag.tag_word = tag; |
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| 80 | |||
| 81 | |||
| 82 | } |
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| 83 | |||
| 84 | void vhpt_invalidate_all() |
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| 85 | { |
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| 86 | memsetb((__address)vhpt_base,1<<VHPT_WIDTH,0); |
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| 87 | } |
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| 88 | |||
| 89 | void vhpt_invalidate_asid(asid_t asid) |
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| 90 | { |
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| 91 | vhpt_invalidate_all(); |
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| 92 | } |
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| 93 | |||
| 94 | |||
| 1702 | cejka | 95 | |
| 96 | /** @} |
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| 97 | */ |
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| 98 |