Subversion Repositories HelenOS

Rev

Rev 1888 | Rev 2170 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
756 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2006 Jakub Jermar
756 jermar 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
 
1888 jermar 29
/** @addtogroup ia64mm
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
756 jermar 35
#include <arch/mm/as.h>
903 jermar 36
#include <arch/mm/asid.h>
37
#include <arch/mm/page.h>
756 jermar 38
#include <genarch/mm/as_ht.h>
830 jermar 39
#include <genarch/mm/asid_fifo.h>
903 jermar 40
#include <mm/asid.h>
41
#include <arch.h>
42
#include <arch/barrier.h>
43
#include <synch/spinlock.h>
756 jermar 44
 
45
/** Architecture dependent address space init. */
46
void as_arch_init(void)
47
{
48
    as_operations = &as_ht_operations;
830 jermar 49
    asid_fifo_init();
756 jermar 50
}
903 jermar 51
 
52
/** Prepare registers for switching to another address space.
53
 *
54
 * @param as Address space.
55
 */
56
void as_install_arch(as_t *as)
57
{
58
    ipl_t ipl;
59
    region_register rr;
60
    int i;
61
 
62
    ipl = interrupts_disable();
63
    spinlock_lock(&as->lock);
64
 
65
    ASSERT(as->asid != ASID_INVALID);
66
 
67
    /*
68
     * Load respective ASID (7 consecutive RIDs) to
69
     * region registers.
70
     */
71
    for (i = 0; i < REGION_REGISTERS; i++) {
72
        if (i == VRN_KERNEL)
73
            continue;
74
 
75
        rr.word = rr_read(i);
76
        rr.map.ve = false;          /* disable VHPT walker */
77
        rr.map.rid = ASID2RID(as->asid, i);
78
        rr.map.ps = PAGE_WIDTH;
79
        rr_write(i, rr.word);
80
    }
81
    srlz_d();
82
    srlz_i();
83
 
84
    spinlock_unlock(&as->lock);
85
    interrupts_restore(ipl);
86
}
1702 cejka 87
 
1888 jermar 88
/** @}
1702 cejka 89
 */