Subversion Repositories HelenOS

Rev

Rev 4220 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
426 jermar 1
/*
4140 jermar 2
 * Copyright (c) 2009 Jakub Jermar
426 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
 
3940 decky 29
/** @addtogroup sparc64mm
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
426 jermar 35
#include <arch/mm/page.h>
1382 decky 36
#include <arch/mm/tlb.h>
684 jermar 37
#include <genarch/mm/page_ht.h>
1382 decky 38
#include <mm/frame.h>
1793 jermar 39
#include <arch/mm/frame.h>
1382 decky 40
#include <bitops.h>
1410 jermar 41
#include <debug.h>
1793 jermar 42
#include <align.h>
1903 jermar 43
#include <config.h>
426 jermar 44
 
1903 jermar 45
/** Perform sparc64 specific initialization of paging. */
426 jermar 46
void page_arch_init(void)
47
{
4140 jermar 48
    if (config.cpu_active == 1)
1903 jermar 49
        page_mapping_operations = &ht_mapping_operations;
426 jermar 50
}
1382 decky 51
 
1841 jermar 52
/** Map memory-mapped device into virtual memory.
53
 *
4140 jermar 54
 * We are currently using identity mapping for mapping device registers.
1841 jermar 55
 *
4223 decky 56
 * @param physaddr Physical address of the page where the device is
57
 *                 located.
58
 * @param size     Size of the device's registers.
1841 jermar 59
 *
4223 decky 60
 * @return Virtual address of the page where the device is mapped.
61
 *
1841 jermar 62
 */
1780 jermar 63
uintptr_t hw_map(uintptr_t physaddr, size_t size)
1382 decky 64
{
4220 decky 65
    if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
66
        panic("Unable to map physical memory %p (%d bytes).", physaddr, size)
67
 
68
    uintptr_t virtaddr = PA2KA(last_frame);
69
    pfn_t i;
70
    for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) {
71
        uintptr_t addr = PFN2ADDR(i);
72
        page_mapping_insert(AS_KERNEL, virtaddr + addr, physaddr + addr, PAGE_NOT_CACHEABLE | PAGE_WRITE);
73
    }
74
 
75
    last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);
76
 
77
    return virtaddr;
1382 decky 78
}
1702 cejka 79
 
1793 jermar 80
/** @}
1702 cejka 81
 */