| 0,0 → 1,99 |
|---|
| /* |
| * Copyright (C) 2006 Jakub Vana |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup ia64mm |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| |
| #include <arch/mm/vhpt.h> |
| #include <mm/frame.h> |
| #include <print.h> |
| |
| |
| static vhpt_entry_t* vhpt_base; |
| |
| uintptr_t vhpt_set_up(void) |
| { |
| vhpt_base = frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA | FRAME_ATOMIC); |
| if(!vhpt_base) |
| panic("Kernel configured with VHPT but no memory for table."); |
| vhpt_invalidate_all(); |
| return (uintptr_t) vhpt_base; |
| } |
| |
| |
| void vhpt_mapping_insert(uintptr_t va, asid_t asid, tlb_entry_t entry) |
| { |
| region_register rr_save, rr; |
| index_t vrn; |
| rid_t rid; |
| uint64_t tag; |
| |
| vhpt_entry_t *ventry; |
| |
| |
| vrn = va >> VRN_SHIFT; |
| rid = ASID2RID(asid, vrn); |
| |
| rr_save.word = rr_read(vrn); |
| rr.word = rr_save.word; |
| rr.map.rid = rid; |
| rr_write(vrn, rr.word); |
| srlz_i(); |
| |
| ventry = (vhpt_entry_t *) thash(va); |
| tag = ttag(va); |
| rr_write(vrn, rr_save.word); |
| srlz_i(); |
| srlz_d(); |
| |
| ventry->word[0]=entry.word[0]; |
| ventry->word[1]=entry.word[1]; |
| ventry->present.tag.tag_word = tag; |
| |
| |
| } |
| |
| void vhpt_invalidate_all() |
| { |
| memsetb((uintptr_t)vhpt_base,1<<VHPT_WIDTH,0); |
| } |
| |
| void vhpt_invalidate_asid(asid_t asid) |
| { |
| vhpt_invalidate_all(); |
| } |
| |
| |
| |
| /** @} |
| */ |
| |