Subversion Repositories HelenOS

Rev

Rev 4377 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 4377 Rev 4692
Line 55... Line 55...
55 
 *
 55 
 *
56 
 * @return 0 on success or an error code from errno.h.
 56 
 * @return 0 on success or an error code from errno.h.
57 
 */
 57 
 */
58 
int ddi_iospace_enable_arch(task_t *task, uintptr_t ioaddr, size_t size)
 58 
int ddi_iospace_enable_arch(task_t *task, uintptr_t ioaddr, size_t size)
59 
{
 59 
{
60 
    count_t bits;
 60 
    size_t bits;
61 
 
 61 
 
62 
    bits = ioaddr + size;
 62 
    bits = ioaddr + size;
63 
    if (bits > IO_PORTS)
 63 
    if (bits > IO_PORTS)
64 
        return ENOENT;
 64 
        return ENOENT;
65 
 
 65 
 
Line 97... Line 97...
97 
    }
 97 
    }
98 
 
 98 
 
99 
    /*
 99 
    /*
100 
     * Enable the range and we are done.
 100 
     * Enable the range and we are done.
101 
     */
 101 
     */
102 
    bitmap_clear_range(&task->arch.iomap, (index_t) ioaddr, (count_t) size);
 102 
    bitmap_clear_range(&task->arch.iomap, (size_t) ioaddr, (size_t) size);
103 
 
 103 
 
104 
    /*
 104 
    /*
105 
     * Increment I/O Permission bitmap generation counter.
 105 
     * Increment I/O Permission bitmap generation counter.
106 
     */
 106 
     */
107 
    task->arch.iomapver++;
 107 
    task->arch.iomapver++;
Line 116... Line 116...
116 
 *
 116 
 *
117 
 * Interrupts must be disabled prior this call.
 117 
 * Interrupts must be disabled prior this call.
118 
 */
 118 
 */
119 
void io_perm_bitmap_install(void)
 119 
void io_perm_bitmap_install(void)
120 
{
 120 
{
121 
    count_t bits;
 121 
    size_t bits;
122 
    ptr_16_32_t cpugdtr;
 122 
    ptr_16_32_t cpugdtr;
123 
    descriptor_t *gdt_p;
 123 
    descriptor_t *gdt_p;
124 
    count_t ver;
 124 
    size_t ver;
125 
 
 125 
 
126 
    /* First, copy the I/O Permission Bitmap. */
 126 
    /* First, copy the I/O Permission Bitmap. */
127 
    spinlock_lock(&TASK->lock);
 127 
    spinlock_lock(&TASK->lock);
128 
    ver = TASK->arch.iomapver;
 128 
    ver = TASK->arch.iomapver;
129 
    if ((bits = TASK->arch.iomap.bits)) {
 129 
    if ((bits = TASK->arch.iomap.bits)) {