Subversion Repositories HelenOS

Rev

Rev 3386 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1191 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2006 Jakub Jermar
4153 mejdrech 3
 * Copyright (c) 2008 Jakub vana
1191 jermar 4
 * All rights reserved.
5
 *
6
 * Redistribution and use in source and binary forms, with or without
7
 * modification, are permitted provided that the following conditions
8
 * are met:
9
 *
10
 * - Redistributions of source code must retain the above copyright
11
 *   notice, this list of conditions and the following disclaimer.
12
 * - Redistributions in binary form must reproduce the above copyright
13
 *   notice, this list of conditions and the following disclaimer in the
14
 *   documentation and/or other materials provided with the distribution.
15
 * - The name of the author may not be used to endorse or promote products
16
 *   derived from this software without specific prior written permission.
17
 *
18
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
 */
29
 
1731 jermar 30
/** @addtogroup ia64ddi
1702 cejka 31
 * @{
32
 */
33
/** @file
34
 */
35
 
1191 jermar 36
#include <ddi/ddi.h>
37
#include <proc/task.h>
38
#include <arch/types.h>
4153 mejdrech 39
#include <mm/slab.h>
40
#include <errno.h>
1191 jermar 41
 
4153 mejdrech 42
#define IO_MEMMAP_PAGES 16384
43
#define PORTS_PER_PAGE  4
44
 
1191 jermar 45
/** Enable I/O space range for task.
46
 *
47
 * Interrupts are disabled and task is locked.
48
 *
4153 mejdrech 49
 * @param task      Task.
50
 * @param ioaddr    Starting I/O space address.
51
 * @param size      Size of the enabled I/O range.
1191 jermar 52
 *
53
 * @return 0 on success or an error code from errno.h.
54
 */
1780 jermar 55
int ddi_iospace_enable_arch(task_t *task, uintptr_t ioaddr, size_t size)
1191 jermar 56
{
4153 mejdrech 57
    if (!task->arch.iomap) {
58
        uint8_t *map;
59
 
60
        task->arch.iomap = malloc(sizeof(bitmap_t), 0);
61
        map = malloc(BITS2BYTES(IO_MEMMAP_PAGES), 0);
62
        if(!map)
63
            return ENOMEM;
64
        bitmap_initialize(task->arch.iomap, map, IO_MEMMAP_PAGES);
65
        bitmap_clear_range(task->arch.iomap, 0, IO_MEMMAP_PAGES);
66
    }
67
 
68
    uintptr_t iopage = ioaddr / PORTS_PER_PAGE;
69
    size = ALIGN_UP(size + ioaddr - 4 * iopage, PORTS_PER_PAGE);
70
    bitmap_set_range(task->arch.iomap, iopage, size / 4);
71
 
1191 jermar 72
    return 0;
73
}
1702 cejka 74
 
1731 jermar 75
/** @}
1702 cejka 76
 */