64 tapechar_setup_device(struct tape_device * device)  in tapechar_setup_device()  argument
68 	sprintf(device_name, "ntibm%i", device->first_minor / 2);  in tapechar_setup_device()
69 	device->nt = register_tape_dev(  in tapechar_setup_device()
70 		&device->cdev->dev,  in tapechar_setup_device()
71 		MKDEV(tapechar_major, device->first_minor),  in tapechar_setup_device()
77 	device->rt = register_tape_dev(  in tapechar_setup_device()
78 		&device->cdev->dev,  in tapechar_setup_device()
79 		MKDEV(tapechar_major, device->first_minor + 1),  in tapechar_setup_device()
89 tapechar_cleanup_device(struct tape_device *device)  in tapechar_cleanup_device()  argument
91 	unregister_tape_dev(&device->cdev->dev, device->rt);  in tapechar_cleanup_device()
92 	device->rt = NULL;  in tapechar_cleanup_device()
93 	unregister_tape_dev(&device->cdev->dev, device->nt);  in tapechar_cleanup_device()
94 	device->nt = NULL;  in tapechar_cleanup_device()
98 tapechar_check_idalbuffer(struct tape_device *device, size_t block_size)  in tapechar_check_idalbuffer()  argument
102 	if (device->char_data.idal_buf != NULL &&  in tapechar_check_idalbuffer()
103 	    device->char_data.idal_buf->size == block_size)  in tapechar_check_idalbuffer()
117 	if (device->char_data.idal_buf != NULL)  in tapechar_check_idalbuffer()
118 		idal_buffer_free(device->char_data.idal_buf);  in tapechar_check_idalbuffer()
120 	device->char_data.idal_buf = new;  in tapechar_check_idalbuffer()
131 	struct tape_device *device;  in tapechar_read()  local
137 	device = (struct tape_device *) filp->private_data;  in tapechar_read()
144 	if(device->required_tapemarks) {  in tapechar_read()
145 		return tape_std_terminate_write(device);  in tapechar_read()
149 	if (device->char_data.block_size != 0) {  in tapechar_read()
150 		if (count < device->char_data.block_size) {  in tapechar_read()
155 		block_size = device->char_data.block_size;  in tapechar_read()
160 	rc = tapechar_check_idalbuffer(device, block_size);  in tapechar_read()
166 	request = device->discipline->read_block(device, block_size);  in tapechar_read()
170 	rc = tape_do_io(device, request);  in tapechar_read()
175 		if (idal_buffer_to_user(device->char_data.idal_buf,  in tapechar_read()
189 	struct tape_device *device;  in tapechar_write()  local
197 	device = (struct tape_device *) filp->private_data;  in tapechar_write()
199 	if (device->char_data.block_size != 0) {  in tapechar_write()
200 		if (count < device->char_data.block_size) {  in tapechar_write()
205 		block_size = device->char_data.block_size;  in tapechar_write()
212 	rc = tapechar_check_idalbuffer(device, block_size);  in tapechar_write()
219 	request = device->discipline->write_block(device, block_size);  in tapechar_write()
226 		if (idal_buffer_from_user(device->char_data.idal_buf,  in tapechar_write()
231 		rc = tape_do_io(device, request);  in tapechar_write()
247 		if (device->discipline->process_eov)  in tapechar_write()
248 			device->discipline->process_eov(device);  in tapechar_write()
262 		device->required_tapemarks = 2;  in tapechar_write()
273 	struct tape_device *device;  in tapechar_open()  local
284 	device = tape_find_device(minor / TAPE_MINORS_PER_DEV);  in tapechar_open()
285 	if (IS_ERR(device)) {  in tapechar_open()
287 		return PTR_ERR(device);  in tapechar_open()
290 	rc = tape_open(device);  in tapechar_open()
292 		filp->private_data = device;  in tapechar_open()
295 		tape_put_device(device);  in tapechar_open()
307 	struct tape_device *device;  in tapechar_release()  local
310 	device = (struct tape_device *) filp->private_data;  in tapechar_release()
318 		if (device->required_tapemarks)  in tapechar_release()
319 			tape_std_terminate_write(device);  in tapechar_release()
320 		tape_mtop(device, MTREW, 1);  in tapechar_release()
322 		if (device->required_tapemarks > 1) {  in tapechar_release()
323 			if (tape_mtop(device, MTWEOF, 1) == 0)  in tapechar_release()
324 				device->required_tapemarks--;  in tapechar_release()
328 	if (device->char_data.idal_buf != NULL) {  in tapechar_release()
329 		idal_buffer_free(device->char_data.idal_buf);  in tapechar_release()
330 		device->char_data.idal_buf = NULL;  in tapechar_release()
332 	tape_release(device);  in tapechar_release()
334 	tape_put_device(device);  in tapechar_release()
343 __tapechar_ioctl(struct tape_device *device,  in __tapechar_ioctl()  argument
372 				if (device->required_tapemarks)  in __tapechar_ioctl()
373 					tape_std_terminate_write(device);  in __tapechar_ioctl()
375 		rc = tape_mtop(device, op.mt_op, op.mt_count);  in __tapechar_ioctl()
378 			if (op.mt_count > device->required_tapemarks)  in __tapechar_ioctl()
379 				device->required_tapemarks = 0;  in __tapechar_ioctl()
381 				device->required_tapemarks -= op.mt_count;  in __tapechar_ioctl()
389 		rc = tape_mtop(device, MTTELL, 1);  in __tapechar_ioctl()
403 			((device->char_data.block_size << MT_ST_BLKSIZE_SHIFT)  in __tapechar_ioctl()
409 		get.mt_gstat  = device->tape_generic_status;  in __tapechar_ioctl()
411 		if (device->medium_state == MS_LOADED) {  in __tapechar_ioctl()
412 			rc = tape_mtop(device, MTTELL, 1);  in __tapechar_ioctl()
426 	if (device->discipline->ioctl_fn == NULL)  in __tapechar_ioctl()
428 	return device->discipline->ioctl_fn(device, no, (unsigned long)data);  in __tapechar_ioctl()
434 	struct tape_device *device;  in tapechar_ioctl()  local
439 	device = (struct tape_device *) filp->private_data;  in tapechar_ioctl()
440 	mutex_lock(&device->mutex);  in tapechar_ioctl()
441 	rc = __tapechar_ioctl(device, no, (void __user *)data);  in tapechar_ioctl()
442 	mutex_unlock(&device->mutex);  in tapechar_ioctl()
450 	struct tape_device *device = filp->private_data;  in tapechar_compat_ioctl()  local
458 	mutex_lock(&device->mutex);  in tapechar_compat_ioctl()
459 	rc = __tapechar_ioctl(device, no, compat_ptr(data));  in tapechar_compat_ioctl()
460 	mutex_unlock(&device->mutex);  in tapechar_compat_ioctl()