Subversion Repositories HelenOS

Rev

Rev 3343 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3343 Rev 3665
Line 1... Line 1...
1
/*
1
/*
2
 * Copyright (c) 2006 Jakub Jermar
2
 * Copyright (c) 2006 Jakub Jermar, Jakub vana
3
 * All rights reserved.
3
 * All rights reserved.
4
 *
4
 *
5
 * Redistribution and use in source and binary forms, with or without
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
6
 * modification, are permitted provided that the following conditions
7
 * are met:
7
 * are met:
Line 33... Line 33...
33
 */
33
 */
34
 
34
 
35
#include <ddi/ddi.h>
35
#include <ddi/ddi.h>
36
#include <proc/task.h>
36
#include <proc/task.h>
37
#include <arch/types.h>
37
#include <arch/types.h>
-
 
38
#include <mm/slab.h>
-
 
39
#include <errno.h>
-
 
40
 
-
 
41
#define IO_MEMMAP_PAGES 16384
-
 
42
#define PORTS_PER_PAGE 4
38
 
43
 
39
/** Enable I/O space range for task.
44
/** Enable I/O space range for task.
40
 *
45
 *
41
 * Interrupts are disabled and task is locked.
46
 * Interrupts are disabled and task is locked.
42
 *
47
 *
Line 46... Line 51...
46
 *
51
 *
47
 * @return 0 on success or an error code from errno.h.
52
 * @return 0 on success or an error code from errno.h.
48
 */
53
 */
49
int ddi_iospace_enable_arch(task_t *task, uintptr_t ioaddr, size_t size)
54
int ddi_iospace_enable_arch(task_t *task, uintptr_t ioaddr, size_t size)
50
{
55
{
-
 
56
 
-
 
57
    if(!task->arch.iomap)
-
 
58
    {
-
 
59
        uint8_t *map;
-
 
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
 
-
 
72
 
51
    return 0;
73
    return 0;
52
}
74
}
53
 
75
 
54
/** @}
76
/** @}
55
 */
77
 */