Subversion Repositories HelenOS

Rev

Rev 4153 | 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
{
4153 mejdrech 44
    vhpt_base = frame_alloc(VHPT_WIDTH - FRAME_WIDTH,
45
        FRAME_KA | FRAME_ATOMIC);
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;
4581 mejdrech 56
    size_t vrn;
1210 vana 57
    rid_t rid;
1780 jermar 58
    uint64_t tag;
1210 vana 59
 
60
    vhpt_entry_t *ventry;
61
 
62
 
63
    vrn = va >> VRN_SHIFT;
64
    rid = ASID2RID(asid, vrn);
65
 
2089 decky 66
    rr_save.word = rr_read(vrn);
67
    rr.word = rr_save.word;
68
    rr.map.rid = rid;
69
    rr_write(vrn, rr.word);
70
    srlz_i();
1210 vana 71
 
72
    ventry = (vhpt_entry_t *) thash(va);
2089 decky 73
    tag = ttag(va);
74
    rr_write(vrn, rr_save.word);
75
    srlz_i();
76
    srlz_d();
1210 vana 77
 
2089 decky 78
    ventry->word[0] = entry.word[0];
79
    ventry->word[1] = entry.word[1];
1210 vana 80
    ventry->present.tag.tag_word = tag;
81
}
82
 
83
void vhpt_invalidate_all()
84
{
3104 svoboda 85
    memsetb(vhpt_base, 1 << VHPT_WIDTH, 0);
1210 vana 86
}
87
 
88
void vhpt_invalidate_asid(asid_t asid)
89
{
90
    vhpt_invalidate_all();
91
}
92
 
1850 jermar 93
/** @}
1702 cejka 94
 */