36 static int sirdev_tx_complete_fsm(struct sir_dev *dev)  in sirdev_tx_complete_fsm()  argument
38 	struct sir_fsm *fsm = &dev->fsm;  in sirdev_tx_complete_fsm()
49 			if (dev->drv->chars_in_buffer)  in sirdev_tx_complete_fsm()
50 				bytes_left = dev->drv->chars_in_buffer(dev);  in sirdev_tx_complete_fsm()
58 			if (dev->speed > 115200)  in sirdev_tx_complete_fsm()
59 				delay = (bytes_left*8*10000) / (dev->speed/100);  in sirdev_tx_complete_fsm()
60 			else if (dev->speed > 0)  in sirdev_tx_complete_fsm()
61 				delay = (bytes_left*10*10000) / (dev->speed/100);  in sirdev_tx_complete_fsm()
76 			if (dev->drv->wait_until_sent)  in sirdev_tx_complete_fsm()
77 				dev->drv->wait_until_sent(dev);  in sirdev_tx_complete_fsm()
106 	struct sir_dev *dev = container_of(work, struct sir_dev, fsm.work.work);  in sirdev_config_fsm()  local
107 	struct sir_fsm *fsm = &dev->fsm;  in sirdev_config_fsm()
124 			if (dev->dongle_drv != NULL) {  in sirdev_config_fsm()
125 				ret = sirdev_put_dongle(dev);  in sirdev_config_fsm()
134 			ret = sirdev_get_dongle(dev, fsm->param);  in sirdev_config_fsm()
157 			if (dev->dongle_drv == NULL) {  in sirdev_config_fsm()
163 			ret = sirdev_put_dongle(dev);  in sirdev_config_fsm()
173 			ret = sirdev_set_dtr_rts(dev,  in sirdev_config_fsm()
185 			ret = sirdev_tx_complete_fsm(dev);  in sirdev_config_fsm()
194 			if (dev->dongle_drv) {  in sirdev_config_fsm()
199 				dev->speed = fsm->param;  in sirdev_config_fsm()
205 			if (dev->dongle_drv->reset) {  in sirdev_config_fsm()
206 				ret = dev->dongle_drv->reset(dev);  in sirdev_config_fsm()
217 				if (dev->drv->set_speed)  in sirdev_config_fsm()
218 					dev->drv->set_speed(dev, dev->speed);  in sirdev_config_fsm()
225 			if (dev->dongle_drv->set_speed) {  in sirdev_config_fsm()
226 				ret = dev->dongle_drv->set_speed(dev, fsm->param);  in sirdev_config_fsm()
241 			if (dev->drv->set_speed)  in sirdev_config_fsm()
242 				dev->drv->set_speed(dev, dev->speed);  in sirdev_config_fsm()
243 			dev->new_speed = 0;  in sirdev_config_fsm()
249 			netif_wake_queue(dev->netdev);  in sirdev_config_fsm()
263 			netif_stop_queue(dev->netdev);  in sirdev_config_fsm()
265 			netif_wake_queue(dev->netdev);  in sirdev_config_fsm()
271 			sirdev_enable_rx(dev);  in sirdev_config_fsm()
286 int sirdev_schedule_request(struct sir_dev *dev, int initial_state, unsigned param)  in sirdev_schedule_request()  argument
288 	struct sir_fsm *fsm = &dev->fsm;  in sirdev_schedule_request()
308 	netif_stop_queue(dev->netdev);  in sirdev_schedule_request()
309 	atomic_set(&dev->enable_rx, 0);  in sirdev_schedule_request()
323 void sirdev_enable_rx(struct sir_dev *dev)  in sirdev_enable_rx()  argument
325 	if (unlikely(atomic_read(&dev->enable_rx)))  in sirdev_enable_rx()
329 	dev->rx_buff.data = dev->rx_buff.head;  in sirdev_enable_rx()
330 	dev->rx_buff.len = 0;  in sirdev_enable_rx()
331 	dev->rx_buff.in_frame = FALSE;  in sirdev_enable_rx()
332 	dev->rx_buff.state = OUTSIDE_FRAME;  in sirdev_enable_rx()
333 	atomic_set(&dev->enable_rx, 1);  in sirdev_enable_rx()
336 static int sirdev_is_receiving(struct sir_dev *dev)  in sirdev_is_receiving()  argument
338 	if (!atomic_read(&dev->enable_rx))  in sirdev_is_receiving()
341 	return dev->rx_buff.state != OUTSIDE_FRAME;  in sirdev_is_receiving()
344 int sirdev_set_dongle(struct sir_dev *dev, IRDA_DONGLE type)  in sirdev_set_dongle()  argument
350 	err = sirdev_schedule_dongle_open(dev, type);  in sirdev_set_dongle()
353 	down(&dev->fsm.sem);		/* block until config change completed */  in sirdev_set_dongle()
354 	err = dev->fsm.result;  in sirdev_set_dongle()
355 	up(&dev->fsm.sem);  in sirdev_set_dongle()
362 int sirdev_raw_write(struct sir_dev *dev, const char *buf, int len)  in sirdev_raw_write()  argument
367 	if (unlikely(len > dev->tx_buff.truesize))  in sirdev_raw_write()
370 	spin_lock_irqsave(&dev->tx_lock, flags);	/* serialize with other tx operations */  in sirdev_raw_write()
371 	while (dev->tx_buff.len > 0) {			/* wait until tx idle */  in sirdev_raw_write()
372 		spin_unlock_irqrestore(&dev->tx_lock, flags);  in sirdev_raw_write()
374 		spin_lock_irqsave(&dev->tx_lock, flags);  in sirdev_raw_write()
377 	dev->tx_buff.data = dev->tx_buff.head;  in sirdev_raw_write()
378 	memcpy(dev->tx_buff.data, buf, len);	  in sirdev_raw_write()
379 	dev->tx_buff.len = len;  in sirdev_raw_write()
381 	ret = dev->drv->do_write(dev, dev->tx_buff.data, dev->tx_buff.len);  in sirdev_raw_write()
385 		dev->tx_buff.data += ret;  in sirdev_raw_write()
386 		dev->tx_buff.len -= ret;  in sirdev_raw_write()
387 		dev->raw_tx = 1;  in sirdev_raw_write()
390 	spin_unlock_irqrestore(&dev->tx_lock, flags);  in sirdev_raw_write()
397 int sirdev_raw_read(struct sir_dev *dev, char *buf, int len)  in sirdev_raw_read()  argument
401 	if (atomic_read(&dev->enable_rx))  in sirdev_raw_read()
404 	count = (len < dev->rx_buff.len) ? len : dev->rx_buff.len;  in sirdev_raw_read()
407 		memcpy(buf, dev->rx_buff.data, count);  in sirdev_raw_read()
408 		dev->rx_buff.data += count;  in sirdev_raw_read()
409 		dev->rx_buff.len -= count;  in sirdev_raw_read()
418 int sirdev_set_dtr_rts(struct sir_dev *dev, int dtr, int rts)  in sirdev_set_dtr_rts()  argument
421 	if (dev->drv->set_dtr_rts)  in sirdev_set_dtr_rts()
422 		ret =  dev->drv->set_dtr_rts(dev, dtr, rts);  in sirdev_set_dtr_rts()
434 void sirdev_write_complete(struct sir_dev *dev)  in sirdev_write_complete()  argument
441 	spin_lock_irqsave(&dev->tx_lock, flags);  in sirdev_write_complete()
444 		 __func__, dev->tx_buff.len);  in sirdev_write_complete()
446 	if (likely(dev->tx_buff.len > 0))  {  in sirdev_write_complete()
448 		actual = dev->drv->do_write(dev, dev->tx_buff.data, dev->tx_buff.len);  in sirdev_write_complete()
451 			dev->tx_buff.data += actual;  in sirdev_write_complete()
452 			dev->tx_buff.len  -= actual;  in sirdev_write_complete()
458 			if ((skb=dev->tx_skb) != NULL) {  in sirdev_write_complete()
459 				dev->tx_skb = NULL;  in sirdev_write_complete()
461 				dev->netdev->stats.tx_errors++;  in sirdev_write_complete()
462 				dev->netdev->stats.tx_dropped++;  in sirdev_write_complete()
464 			dev->tx_buff.len = 0;  in sirdev_write_complete()
466 		if (dev->tx_buff.len > 0)  in sirdev_write_complete()
470 	if (unlikely(dev->raw_tx != 0)) {  in sirdev_write_complete()
479 		dev->raw_tx = 0;  in sirdev_write_complete()
497 	if ((skb=dev->tx_skb) != NULL) {  in sirdev_write_complete()
498 		dev->tx_skb = NULL;  in sirdev_write_complete()
499 		dev->netdev->stats.tx_packets++;  in sirdev_write_complete()
500 		dev->netdev->stats.tx_bytes += skb->len;  in sirdev_write_complete()
504 	if (unlikely(dev->new_speed > 0)) {  in sirdev_write_complete()
506 		err = sirdev_schedule_speed(dev, dev->new_speed);  in sirdev_write_complete()
513 			netif_wake_queue(dev->netdev);  in sirdev_write_complete()
522 		sirdev_enable_rx(dev);  in sirdev_write_complete()
523 		netif_wake_queue(dev->netdev);  in sirdev_write_complete()
527 	spin_unlock_irqrestore(&dev->tx_lock, flags);  in sirdev_write_complete()
536 int sirdev_receive(struct sir_dev *dev, const unsigned char *cp, size_t count)   in sirdev_receive()  argument
538 	if (!dev || !dev->netdev) {  in sirdev_receive()
543 	if (!dev->irlap) {  in sirdev_receive()
553 		irda_device_set_media_busy(dev->netdev, TRUE);  in sirdev_receive()
554 		dev->netdev->stats.rx_dropped++;  in sirdev_receive()
560 	if (likely(atomic_read(&dev->enable_rx))) {  in sirdev_receive()
563 			async_unwrap_char(dev->netdev, &dev->netdev->stats,  in sirdev_receive()
564 					  &dev->rx_buff, *cp++);  in sirdev_receive()
572 			dev->rx_buff.data[dev->rx_buff.len++] = *cp++;  in sirdev_receive()
575 			if (unlikely(dev->rx_buff.len == dev->rx_buff.truesize))  in sirdev_receive()
576 				dev->rx_buff.len = 0;  in sirdev_receive()
591 	struct sir_dev *dev = netdev_priv(ndev);  in sirdev_hard_xmit()  local
597 	IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;);  in sirdev_hard_xmit()
604 	if ((speed != dev->speed) && (speed != -1)) {  in sirdev_hard_xmit()
606 			err = sirdev_schedule_speed(dev, speed);  in sirdev_hard_xmit()
630 			dev->new_speed = speed;  in sirdev_hard_xmit()
634 	dev->tx_buff.data = dev->tx_buff.head;  in sirdev_hard_xmit()
637 	if(spin_is_locked(&dev->tx_lock)) {  in sirdev_hard_xmit()
642 	spin_lock_irqsave(&dev->tx_lock, flags);  in sirdev_hard_xmit()
645 	dev->tx_buff.len = async_wrap_skb(skb, dev->tx_buff.data, dev->tx_buff.truesize);   in sirdev_hard_xmit()
652 	atomic_set(&dev->enable_rx, 0);  in sirdev_hard_xmit()
653 	if (unlikely(sirdev_is_receiving(dev)))  in sirdev_hard_xmit()
654 		dev->netdev->stats.collisions++;  in sirdev_hard_xmit()
656 	actual = dev->drv->do_write(dev, dev->tx_buff.data, dev->tx_buff.len);  in sirdev_hard_xmit()
659 		dev->tx_skb = skb;  in sirdev_hard_xmit()
660 		dev->tx_buff.data += actual;  in sirdev_hard_xmit()
661 		dev->tx_buff.len -= actual;  in sirdev_hard_xmit()
668 		dev->netdev->stats.tx_errors++;  in sirdev_hard_xmit()
669 		dev->netdev->stats.tx_dropped++;  in sirdev_hard_xmit()
672 	spin_unlock_irqrestore(&dev->tx_lock, flags);  in sirdev_hard_xmit()
682 	struct sir_dev *dev = netdev_priv(ndev);  in sirdev_ioctl()  local
685 	IRDA_ASSERT(dev != NULL, return -1;);  in sirdev_ioctl()
694 			ret = sirdev_schedule_speed(dev, irq->ifr_baudrate);  in sirdev_ioctl()
704 			ret = sirdev_schedule_dongle_open(dev, irq->ifr_dongle);  in sirdev_ioctl()
714 			irda_device_set_media_busy(dev->netdev, TRUE);  in sirdev_ioctl()
718 		irq->ifr_receiving = sirdev_is_receiving(dev);  in sirdev_ioctl()
725 			ret = sirdev_schedule_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts);  in sirdev_ioctl()
736 			ret = sirdev_schedule_mode(dev, irq->ifr_mode);  in sirdev_ioctl()
753 static int sirdev_alloc_buffers(struct sir_dev *dev)  in sirdev_alloc_buffers()  argument
755 	dev->tx_buff.truesize = SIRBUF_ALLOCSIZE;  in sirdev_alloc_buffers()
756 	dev->rx_buff.truesize = IRDA_SKB_MAX_MTU;   in sirdev_alloc_buffers()
759 	dev->rx_buff.skb = __netdev_alloc_skb(dev->netdev, dev->rx_buff.truesize,  in sirdev_alloc_buffers()
761 	if (dev->rx_buff.skb == NULL)  in sirdev_alloc_buffers()
763 	skb_reserve(dev->rx_buff.skb, 1);  in sirdev_alloc_buffers()
764 	dev->rx_buff.head = dev->rx_buff.skb->data;  in sirdev_alloc_buffers()
766 	dev->tx_buff.head = kmalloc(dev->tx_buff.truesize, GFP_KERNEL);  in sirdev_alloc_buffers()
767 	if (dev->tx_buff.head == NULL) {  in sirdev_alloc_buffers()
768 		kfree_skb(dev->rx_buff.skb);  in sirdev_alloc_buffers()
769 		dev->rx_buff.skb = NULL;  in sirdev_alloc_buffers()
770 		dev->rx_buff.head = NULL;  in sirdev_alloc_buffers()
774 	dev->tx_buff.data = dev->tx_buff.head;  in sirdev_alloc_buffers()
775 	dev->rx_buff.data = dev->rx_buff.head;  in sirdev_alloc_buffers()
776 	dev->tx_buff.len = 0;  in sirdev_alloc_buffers()
777 	dev->rx_buff.len = 0;  in sirdev_alloc_buffers()
779 	dev->rx_buff.in_frame = FALSE;  in sirdev_alloc_buffers()
780 	dev->rx_buff.state = OUTSIDE_FRAME;  in sirdev_alloc_buffers()
784 static void sirdev_free_buffers(struct sir_dev *dev)  in sirdev_free_buffers()  argument
786 	kfree_skb(dev->rx_buff.skb);  in sirdev_free_buffers()
787 	kfree(dev->tx_buff.head);  in sirdev_free_buffers()
788 	dev->rx_buff.head = dev->tx_buff.head = NULL;  in sirdev_free_buffers()
789 	dev->rx_buff.skb = NULL;  in sirdev_free_buffers()
794 	struct sir_dev *dev = netdev_priv(ndev);  in sirdev_open()  local
795 	const struct sir_driver *drv = dev->drv;  in sirdev_open()
804 	if (sirdev_alloc_buffers(dev))  in sirdev_open()
807 	if (!dev->drv->start_dev  ||  dev->drv->start_dev(dev))  in sirdev_open()
810 	sirdev_enable_rx(dev);  in sirdev_open()
811 	dev->raw_tx = 0;  in sirdev_open()
814 	dev->irlap = irlap_open(ndev, &dev->qos, dev->hwname);  in sirdev_open()
815 	if (!dev->irlap)  in sirdev_open()
820 	pr_debug("%s - done, speed = %d\n", __func__, dev->speed);  in sirdev_open()
825 	atomic_set(&dev->enable_rx, 0);  in sirdev_open()
826 	if (dev->drv->stop_dev)  in sirdev_open()
827 		dev->drv->stop_dev(dev);  in sirdev_open()
829 	sirdev_free_buffers(dev);  in sirdev_open()
837 	struct sir_dev *dev = netdev_priv(ndev);  in sirdev_close()  local
844 	down(&dev->fsm.sem);		/* block on pending config completion */  in sirdev_close()
846 	atomic_set(&dev->enable_rx, 0);  in sirdev_close()
848 	if (unlikely(!dev->irlap))  in sirdev_close()
850 	irlap_close(dev->irlap);  in sirdev_close()
851 	dev->irlap = NULL;  in sirdev_close()
853 	drv = dev->drv;  in sirdev_close()
854 	if (unlikely(!drv  ||  !dev->priv))  in sirdev_close()
858 		drv->stop_dev(dev);  in sirdev_close()
860 	sirdev_free_buffers(dev);  in sirdev_close()
864 	dev->speed = 0;  in sirdev_close()
865 	up(&dev->fsm.sem);  in sirdev_close()
880 	struct sir_dev *dev;  in sirdev_get_instance()  local
894 	ndev = alloc_irdadev(sizeof(*dev));  in sirdev_get_instance()
900 	dev = netdev_priv(ndev);  in sirdev_get_instance()
902 	irda_init_max_qos_capabilies(&dev->qos);  in sirdev_get_instance()
903 	dev->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|IR_115200;  in sirdev_get_instance()
904 	dev->qos.min_turn_time.bits = drv->qos_mtt_bits;  in sirdev_get_instance()
905 	irda_qos_bits_to_value(&dev->qos);  in sirdev_get_instance()
907 	strncpy(dev->hwname, name, sizeof(dev->hwname)-1);  in sirdev_get_instance()
909 	atomic_set(&dev->enable_rx, 0);  in sirdev_get_instance()
910 	dev->tx_skb = NULL;  in sirdev_get_instance()
912 	spin_lock_init(&dev->tx_lock);  in sirdev_get_instance()
913 	sema_init(&dev->fsm.sem, 1);  in sirdev_get_instance()
915 	dev->drv = drv;  in sirdev_get_instance()
916 	dev->netdev = ndev;  in sirdev_get_instance()
927 	return dev;  in sirdev_get_instance()
936 int sirdev_put_instance(struct sir_dev *dev)  in sirdev_put_instance()  argument
942 	atomic_set(&dev->enable_rx, 0);  in sirdev_put_instance()
944 	netif_carrier_off(dev->netdev);  in sirdev_put_instance()
945 	netif_device_detach(dev->netdev);  in sirdev_put_instance()
947 	if (dev->dongle_drv)  in sirdev_put_instance()
948 		err = sirdev_schedule_dongle_close(dev);  in sirdev_put_instance()
952 	sirdev_close(dev->netdev);  in sirdev_put_instance()
954 	down(&dev->fsm.sem);  in sirdev_put_instance()
955 	dev->fsm.state = SIRDEV_STATE_DEAD;	/* mark staled */  in sirdev_put_instance()
956 	dev->dongle_drv = NULL;  in sirdev_put_instance()
957 	dev->priv = NULL;  in sirdev_put_instance()
958 	up(&dev->fsm.sem);  in sirdev_put_instance()
961 	unregister_netdev(dev->netdev);  in sirdev_put_instance()
963 	free_netdev(dev->netdev);  in sirdev_put_instance()