Subversion Repositories HelenOS-historic

Rev

Rev 1290 | Rev 1767 | 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.
1702 cejka 27
 */
28
 
29
 /** @addtogroup ia64mm
30
 * @{
31
 */
32
/** @file
1290 vana 33
*/
34
 
35
 
1210 vana 36
#include <arch/mm/vhpt.h>
37
#include <mm/frame.h>
38
#include <print.h>
39
 
40
 
41
static vhpt_entry_t* vhpt_base;
42
 
43
__address vhpt_set_up(void)
44
{
45
    vhpt_base=(vhpt_entry_t*) PA2KA(PFN2ADDR(frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA)));
46
    if(!vhpt_base) panic("Kernel configured with VHPT but no memory for table.");
47
    vhpt_invalidate_all();
48
    return (__address) vhpt_base;
49
}
50
 
51
 
52
void vhpt_mapping_insert(__address va, asid_t asid, tlb_entry_t entry)
53
{
54
    region_register rr_save, rr;
55
    index_t vrn;
56
    rid_t rid;
57
    __u64 tag;
58
 
59
    vhpt_entry_t *ventry;
60
 
61
 
62
    vrn = va >> VRN_SHIFT;
63
    rid = ASID2RID(asid, vrn);
64
 
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();
70
 
71
    ventry = (vhpt_entry_t *) thash(va);
72
  tag = ttag(va);
73
  rr_write(vrn, rr_save.word);
74
  srlz_i();
75
  srlz_d();
76
 
77
    ventry->word[0]=entry.word[0];
78
    ventry->word[1]=entry.word[1];
79
    ventry->present.tag.tag_word = tag;
80
 
81
 
82
}
83
 
84
void vhpt_invalidate_all()
85
{
86
    memsetb((__address)vhpt_base,1<<VHPT_WIDTH,0);
87
}
88
 
89
void vhpt_invalidate_asid(asid_t asid)
90
{
91
    vhpt_invalidate_all();
92
}
93
 
94
 
1702 cejka 95
 
96
 /** @}
97
 */
98