Rev 2071 | Rev 3104 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1290 | vana | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2006 Jakub Vana |
| 1290 | 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. |
||
| 1702 | cejka | 27 | */ |
| 28 | |||
| 1850 | jermar | 29 | /** @addtogroup ia64mm |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
||
| 32 | /** @file |
||
| 1290 | vana | 33 | */ |
| 34 | |||
| 2089 | decky | 35 | #include <memstr.h> |
| 1210 | vana | 36 | #include <arch/mm/vhpt.h> |
| 37 | #include <mm/frame.h> |
||
| 38 | #include <print.h> |
||
| 39 | |||
| 40 | static vhpt_entry_t* vhpt_base; |
||
| 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) |
||
| 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; |
||
| 55 | index_t vrn; |
||
| 56 | rid_t rid; |
||
| 1780 | jermar | 57 | uint64_t tag; |
| 1210 | vana | 58 | |
| 59 | vhpt_entry_t *ventry; |
||
| 60 | |||
| 61 | |||
| 62 | vrn = va >> VRN_SHIFT; |
||
| 63 | rid = ASID2RID(asid, vrn); |
||
| 64 | |||
| 2089 | decky | 65 | rr_save.word = rr_read(vrn); |
| 66 | rr.word = rr_save.word; |
||
| 67 | rr.map.rid = rid; |
||
| 68 | rr_write(vrn, rr.word); |
||
| 69 | srlz_i(); |
||
| 1210 | vana | 70 | |
| 71 | ventry = (vhpt_entry_t *) thash(va); |
||
| 2089 | decky | 72 | tag = ttag(va); |
| 73 | rr_write(vrn, rr_save.word); |
||
| 74 | srlz_i(); |
||
| 75 | srlz_d(); |
||
| 1210 | vana | 76 | |
| 2089 | decky | 77 | ventry->word[0] = entry.word[0]; |
| 78 | ventry->word[1] = entry.word[1]; |
||
| 1210 | vana | 79 | ventry->present.tag.tag_word = tag; |
| 80 | } |
||
| 81 | |||
| 82 | void vhpt_invalidate_all() |
||
| 83 | { |
||
| 2089 | decky | 84 | memsetb((uintptr_t) vhpt_base, 1 << VHPT_WIDTH, 0); |
| 1210 | vana | 85 | } |
| 86 | |||
| 87 | void vhpt_invalidate_asid(asid_t asid) |
||
| 88 | { |
||
| 89 | vhpt_invalidate_all(); |
||
| 90 | } |
||
| 91 | |||
| 1850 | jermar | 92 | /** @} |
| 1702 | cejka | 93 | */ |