Subversion Repositories HelenOS

Rev

Rev 3193 | Rev 3908 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
162 decky 1
/*
2071 jermar 2
 * Copyright (c) 2005 Martin Decky
162 decky 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
 
1726 decky 29
/** @addtogroup ppc32mm
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
684 jermar 35
#include <genarch/mm/page_pt.h>
162 decky 36
#include <mm/frame.h>
1374 decky 37
#include <mm/as.h>
1383 decky 38
#include <align.h>
1374 decky 39
#include <config.h>
162 decky 40
 
41
void page_arch_init(void)
42
{
1726 decky 43
    if (config.cpu_active == 1)
1374 decky 44
        page_mapping_operations = &pt_mapping_operations;
162 decky 45
}
1383 decky 46
 
47
 
1780 jermar 48
uintptr_t hw_map(uintptr_t physaddr, size_t size)
1383 decky 49
{
3193 jermar 50
    if (last_frame + ALIGN_UP(size, PAGE_SIZE) >
51
        KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
3790 svoboda 52
        panic("Unable to map physical memory %p (%" PRIs " bytes).",
3193 jermar 53
            physaddr, size)
1383 decky 54
 
1780 jermar 55
    uintptr_t virtaddr = PA2KA(last_frame);
1383 decky 56
    pfn_t i;
57
    for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)
3193 jermar 58
        page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i),
59
            physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE | PAGE_WRITE);
1383 decky 60
 
61
    last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);
62
 
63
    return virtaddr;
64
}
1702 cejka 65
 
1726 decky 66
/** @}
1702 cejka 67
 */