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Line 109... Line 109...
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    spinlock_unlock(&t->lock);
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    spinlock_unlock(&t->lock);
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    interrupts_restore(ipl);
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    interrupts_restore(ipl);
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    return 0;
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    return 0;
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}
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}
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/** Enable range of I/O space for task.
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 *
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 * @param id Task ID of the destination task.
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 * @param ioaddr Starting I/O address.
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 * @param size Size of the enabled I/O space..
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 *
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 * @return 0 on success, EPERM if the caller lacks capabilities to use this syscall,
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 *     ENOENT if there is no task matching the specified ID.
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 */
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static int ddi_enable_iospace(task_id_t id, __address ioaddr, size_t size)
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{
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    ipl_t ipl;
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    cap_t caps;
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    task_t *t;
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    int rc;
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    /*
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     * Make sure the caller is authorised to make this syscall.
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     */
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    caps = cap_get(TASK);
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    if (!(caps & CAP_IO_MANAGER))
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        return EPERM;
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    ipl = interrupts_disable();
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    spinlock_lock(&tasks_lock);
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    t = task_find_by_id(id);
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    if (!t) {
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        /*
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         * There is no task with the specified ID.
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         */
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        spinlock_unlock(&tasks_lock);
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        interrupts_restore(ipl);
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        return ENOENT;
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    }
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    /*
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     * TODO: We are currently lacking support for task destroying.
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     * Once it is added to the kernel, we must take care to
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     * synchronize in a way that prevents race conditions here.
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     */
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    /* Lock the task and release the lock protecting tasks_btree. */
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    spinlock_lock(&t->lock);
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    spinlock_unlock(&tasks_lock);
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    rc = ddi_enable_iospace_arch(t, ioaddr, size);
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    spinlock_unlock(&t->lock);
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    interrupts_restore(ipl);
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    return rc;
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}
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/** Wrapper for SYS_MAP_PHYSMEM syscall.
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/** Wrapper for SYS_MAP_PHYSMEM syscall.
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 *
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 *
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 * @param User space address of DDI argument structure.
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 * @param User space address of memory DDI argument structure.
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 *
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 *
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 * @return 0 on success, otherwise it returns error code found in errno.h
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 * @return 0 on success, otherwise it returns error code found in errno.h
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 */
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 */
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__native sys_map_physmem(ddi_arg_t *uspace_ddi_arg)
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__native sys_map_physmem(ddi_memarg_t *uspace_mem_arg)
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{
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{
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    ddi_arg_t arg;
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    ddi_memarg_t arg;
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    copy_from_uspace(&arg, uspace_ddi_arg, sizeof(ddi_arg_t));
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    copy_from_uspace(&arg, uspace_mem_arg, sizeof(ddi_memarg_t));
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    return (__native) ddi_map_physmem((task_id_t) arg.task_id, ALIGN_DOWN((__address) arg.phys_base, FRAME_SIZE),
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    return (__native) ddi_map_physmem((task_id_t) arg.task_id, ALIGN_DOWN((__address) arg.phys_base, FRAME_SIZE),
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                      ALIGN_DOWN((__address) arg.virt_base, PAGE_SIZE), (count_t) arg.pages,
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                      ALIGN_DOWN((__address) arg.virt_base, PAGE_SIZE), (count_t) arg.pages,
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                      (bool) arg.writable);
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                      (bool) arg.writable);
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}
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}
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/** Wrapper for SYS_ENABLE_IOSPACE syscall.
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 *
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 * @param User space address of DDI argument structure.
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 187 
 *
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 188 
 * @return 0 on success, otherwise it returns error code found in errno.h
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 189 
 */
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 190 
__native sys_enable_iospace(ddi_ioarg_t *uspace_io_arg)
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 191 
{
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    ddi_ioarg_t arg;
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 193 
   
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 194 
    copy_from_uspace(&arg, uspace_io_arg, sizeof(ddi_ioarg_t));
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 195 
    return (__native) ddi_enable_iospace((task_id_t) arg.task_id, (__address) arg.ioaddr, (size_t) arg.size);
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}