Rev 1210 | Rev 1702 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1290 | vana | 1 | /* |
| 2 | * Copyright (C) 2006 Jakub Vana |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 13 | * documentation and/or other materials provided with the distribution. |
||
| 14 | * - The name of the author may not be used to endorse or promote products |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | |||
| 1210 | vana | 30 | #include <arch/mm/vhpt.h> |
| 31 | #include <mm/frame.h> |
||
| 32 | #include <print.h> |
||
| 33 | |||
| 34 | |||
| 35 | static vhpt_entry_t* vhpt_base; |
||
| 36 | |||
| 37 | __address vhpt_set_up(void) |
||
| 38 | { |
||
| 39 | vhpt_base=(vhpt_entry_t*) PA2KA(PFN2ADDR(frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA))); |
||
| 40 | if(!vhpt_base) panic("Kernel configured with VHPT but no memory for table."); |
||
| 41 | vhpt_invalidate_all(); |
||
| 42 | return (__address) vhpt_base; |
||
| 43 | } |
||
| 44 | |||
| 45 | |||
| 46 | void vhpt_mapping_insert(__address va, asid_t asid, tlb_entry_t entry) |
||
| 47 | { |
||
| 48 | region_register rr_save, rr; |
||
| 49 | index_t vrn; |
||
| 50 | rid_t rid; |
||
| 51 | __u64 tag; |
||
| 52 | |||
| 53 | vhpt_entry_t *ventry; |
||
| 54 | |||
| 55 | |||
| 56 | vrn = va >> VRN_SHIFT; |
||
| 57 | rid = ASID2RID(asid, vrn); |
||
| 58 | |||
| 59 | rr_save.word = rr_read(vrn); |
||
| 60 | rr.word = rr_save.word; |
||
| 61 | rr.map.rid = rid; |
||
| 62 | rr_write(vrn, rr.word); |
||
| 63 | srlz_i(); |
||
| 64 | |||
| 65 | ventry = (vhpt_entry_t *) thash(va); |
||
| 66 | tag = ttag(va); |
||
| 67 | rr_write(vrn, rr_save.word); |
||
| 68 | srlz_i(); |
||
| 69 | srlz_d(); |
||
| 70 | |||
| 71 | ventry->word[0]=entry.word[0]; |
||
| 72 | ventry->word[1]=entry.word[1]; |
||
| 73 | ventry->present.tag.tag_word = tag; |
||
| 74 | |||
| 75 | |||
| 76 | } |
||
| 77 | |||
| 78 | void vhpt_invalidate_all() |
||
| 79 | { |
||
| 80 | memsetb((__address)vhpt_base,1<<VHPT_WIDTH,0); |
||
| 81 | } |
||
| 82 | |||
| 83 | void vhpt_invalidate_asid(asid_t asid) |
||
| 84 | { |
||
| 85 | vhpt_invalidate_all(); |
||
| 86 | } |
||
| 87 | |||
| 88 |