216 	struct uio_device *idev = dev_get_drvdata(dev);  in name_show()  local
219 	mutex_lock(&idev->info_lock);  in name_show()
220 	if (!idev->info) {  in name_show()
226 	ret = sprintf(buf, "%s\n", idev->info->name);  in name_show()
229 	mutex_unlock(&idev->info_lock);  in name_show()
237 	struct uio_device *idev = dev_get_drvdata(dev);  in version_show()  local
240 	mutex_lock(&idev->info_lock);  in version_show()
241 	if (!idev->info) {  in version_show()
247 	ret = sprintf(buf, "%s\n", idev->info->version);  in version_show()
250 	mutex_unlock(&idev->info_lock);  in version_show()
258 	struct uio_device *idev = dev_get_drvdata(dev);  in event_show()  local
259 	return sprintf(buf, "%u\n", (unsigned int)atomic_read(&idev->event));  in event_show()
280 static int uio_dev_add_attributes(struct uio_device *idev)  in uio_dev_add_attributes()  argument
292 		mem = &idev->info->mem[mi];  in uio_dev_add_attributes()
297 			idev->map_dir = kobject_create_and_add("maps",  in uio_dev_add_attributes()
298 							&idev->dev.kobj);  in uio_dev_add_attributes()
299 			if (!idev->map_dir) {  in uio_dev_add_attributes()
312 		ret = kobject_add(&map->kobj, idev->map_dir, "map%d", mi);  in uio_dev_add_attributes()
321 		port = &idev->info->port[pi];  in uio_dev_add_attributes()
326 			idev->portio_dir = kobject_create_and_add("portio",  in uio_dev_add_attributes()
327 							&idev->dev.kobj);  in uio_dev_add_attributes()
328 			if (!idev->portio_dir) {  in uio_dev_add_attributes()
341 		ret = kobject_add(&portio->kobj, idev->portio_dir,  in uio_dev_add_attributes()
356 		port = &idev->info->port[pi];  in uio_dev_add_attributes()
360 	kobject_put(idev->portio_dir);  in uio_dev_add_attributes()
365 		mem = &idev->info->mem[mi];  in uio_dev_add_attributes()
369 	kobject_put(idev->map_dir);  in uio_dev_add_attributes()
370 	dev_err(&idev->dev, "error creating sysfs files (%d)\n", ret);  in uio_dev_add_attributes()
374 static void uio_dev_del_attributes(struct uio_device *idev)  in uio_dev_del_attributes()  argument
381 		mem = &idev->info->mem[i];  in uio_dev_del_attributes()
386 	kobject_put(idev->map_dir);  in uio_dev_del_attributes()
389 		port = &idev->info->port[i];  in uio_dev_del_attributes()
394 	kobject_put(idev->portio_dir);  in uio_dev_del_attributes()
397 static int uio_get_minor(struct uio_device *idev)  in uio_get_minor()  argument
402 	retval = idr_alloc(&uio_idr, idev, 0, UIO_MAX_DEVICES, GFP_KERNEL);  in uio_get_minor()
404 		idev->minor = retval;  in uio_get_minor()
407 		dev_err(&idev->dev, "too many uio devices\n");  in uio_get_minor()
414 static void uio_free_minor(struct uio_device *idev)  in uio_free_minor()  argument
417 	idr_remove(&uio_idr, idev->minor);  in uio_free_minor()
427 	struct uio_device *idev = info->uio_dev;  in uio_event_notify()  local
429 	atomic_inc(&idev->event);  in uio_event_notify()
430 	wake_up_interruptible(&idev->wait);  in uio_event_notify()
431 	kill_fasync(&idev->async_queue, SIGIO, POLL_IN);  in uio_event_notify()
442 	struct uio_device *idev = (struct uio_device *)dev_id;  in uio_interrupt()  local
445 	ret = idev->info->handler(irq, idev->info);  in uio_interrupt()
447 		uio_event_notify(idev->info);  in uio_interrupt()
459 	struct uio_device *idev;  in uio_open()  local
464 	idev = idr_find(&uio_idr, iminor(inode));  in uio_open()
466 	if (!idev) {  in uio_open()
471 	get_device(&idev->dev);  in uio_open()
473 	if (!try_module_get(idev->owner)) {  in uio_open()
484 	listener->dev = idev;  in uio_open()
485 	listener->event_count = atomic_read(&idev->event);  in uio_open()
488 	mutex_lock(&idev->info_lock);  in uio_open()
489 	if (!idev->info) {  in uio_open()
490 		mutex_unlock(&idev->info_lock);  in uio_open()
495 	if (idev->info && idev->info->open)  in uio_open()
496 		ret = idev->info->open(idev->info, inode);  in uio_open()
497 	mutex_unlock(&idev->info_lock);  in uio_open()
507 	module_put(idev->owner);  in uio_open()
510 	put_device(&idev->dev);  in uio_open()
519 	struct uio_device *idev = listener->dev;  in uio_fasync()  local
521 	return fasync_helper(fd, filep, on, &idev->async_queue);  in uio_fasync()
528 	struct uio_device *idev = listener->dev;  in uio_release()  local
530 	mutex_lock(&idev->info_lock);  in uio_release()
531 	if (idev->info && idev->info->release)  in uio_release()
532 		ret = idev->info->release(idev->info, inode);  in uio_release()
533 	mutex_unlock(&idev->info_lock);  in uio_release()
535 	module_put(idev->owner);  in uio_release()
537 	put_device(&idev->dev);  in uio_release()
544 	struct uio_device *idev = listener->dev;  in uio_poll()  local
547 	mutex_lock(&idev->info_lock);  in uio_poll()
548 	if (!idev->info || !idev->info->irq)  in uio_poll()
550 	mutex_unlock(&idev->info_lock);  in uio_poll()
555 	poll_wait(filep, &idev->wait, wait);  in uio_poll()
556 	if (listener->event_count != atomic_read(&idev->event))  in uio_poll()
565 	struct uio_device *idev = listener->dev;  in uio_read()  local
570 	mutex_lock(&idev->info_lock);  in uio_read()
571 	if (!idev->info || !idev->info->irq)  in uio_read()
573 	mutex_unlock(&idev->info_lock);  in uio_read()
581 	add_wait_queue(&idev->wait, &wait);  in uio_read()
586 		event_count = atomic_read(&idev->event);  in uio_read()
611 	remove_wait_queue(&idev->wait, &wait);  in uio_read()
620 	struct uio_device *idev = listener->dev;  in uio_write()  local
630 	mutex_lock(&idev->info_lock);  in uio_write()
631 	if (!idev->info) {  in uio_write()
636 	if (!idev->info || !idev->info->irq) {  in uio_write()
641 	if (!idev->info->irqcontrol) {  in uio_write()
646 	retval = idev->info->irqcontrol(idev->info, irq_on);  in uio_write()
649 	mutex_unlock(&idev->info_lock);  in uio_write()
655 	struct uio_device *idev = vma->vm_private_data;  in uio_find_mem_index()  local
658 		if (idev->info->mem[vma->vm_pgoff].size == 0)  in uio_find_mem_index()
667 	struct uio_device *idev = vmf->vma->vm_private_data;  in uio_vma_fault()  local
674 	mutex_lock(&idev->info_lock);  in uio_vma_fault()
675 	if (!idev->info) {  in uio_vma_fault()
692 	addr = (void *)(unsigned long)idev->info->mem[mi].addr + offset;  in uio_vma_fault()
693 	if (idev->info->mem[mi].memtype == UIO_MEM_LOGICAL)  in uio_vma_fault()
701 	mutex_unlock(&idev->info_lock);  in uio_vma_fault()
725 	struct uio_device *idev = vma->vm_private_data;  in uio_mmap_physical()  local
731 	mem = idev->info->mem + mi;  in uio_mmap_physical()
760 	struct uio_device *idev = listener->dev;  in uio_mmap()  local
768 	vma->vm_private_data = idev;  in uio_mmap()
770 	mutex_lock(&idev->info_lock);  in uio_mmap()
771 	if (!idev->info) {  in uio_mmap()
783 	actual_pages = ((idev->info->mem[mi].addr & ~PAGE_MASK)  in uio_mmap()
784 			+ idev->info->mem[mi].size + PAGE_SIZE -1) >> PAGE_SHIFT;  in uio_mmap()
790 	if (idev->info->mmap) {  in uio_mmap()
791 		ret = idev->info->mmap(idev->info, vma);  in uio_mmap()
795 	switch (idev->info->mem[mi].memtype) {  in uio_mmap()
808 	mutex_unlock(&idev->info_lock);  in uio_mmap()
895 	struct uio_device *idev = dev_get_drvdata(dev);  in uio_device_release()  local
897 	kfree(idev);  in uio_device_release()
912 	struct uio_device *idev;  in __uio_register_device()  local
920 	idev = kzalloc(sizeof(*idev), GFP_KERNEL);  in __uio_register_device()
921 	if (!idev) {  in __uio_register_device()
925 	idev->owner = owner;  in __uio_register_device()
926 	idev->info = info;  in __uio_register_device()
927 	mutex_init(&idev->info_lock);  in __uio_register_device()
928 	init_waitqueue_head(&idev->wait);  in __uio_register_device()
929 	atomic_set(&idev->event, 0);  in __uio_register_device()
931 	ret = uio_get_minor(idev);  in __uio_register_device()
935 	idev->dev.devt = MKDEV(uio_major, idev->minor);  in __uio_register_device()
936 	idev->dev.class = &uio_class;  in __uio_register_device()
937 	idev->dev.parent = parent;  in __uio_register_device()
938 	idev->dev.release = uio_device_release;  in __uio_register_device()
939 	dev_set_drvdata(&idev->dev, idev);  in __uio_register_device()
941 	ret = dev_set_name(&idev->dev, "uio%d", idev->minor);  in __uio_register_device()
945 	ret = device_register(&idev->dev);  in __uio_register_device()
949 	ret = uio_dev_add_attributes(idev);  in __uio_register_device()
963 				  info->irq_flags, info->name, idev);  in __uio_register_device()
968 	info->uio_dev = idev;  in __uio_register_device()
972 	uio_dev_del_attributes(idev);  in __uio_register_device()
974 	device_unregister(&idev->dev);  in __uio_register_device()
976 	uio_free_minor(idev);  in __uio_register_device()
988 	struct uio_device *idev;  in uio_unregister_device()  local
993 	idev = info->uio_dev;  in uio_unregister_device()
995 	uio_free_minor(idev);  in uio_unregister_device()
997 	mutex_lock(&idev->info_lock);  in uio_unregister_device()
998 	uio_dev_del_attributes(idev);  in uio_unregister_device()
1001 		free_irq(info->irq, idev);  in uio_unregister_device()
1003 	idev->info = NULL;  in uio_unregister_device()
1004 	mutex_unlock(&idev->info_lock);  in uio_unregister_device()
1006 	device_unregister(&idev->dev);  in uio_unregister_device()