drivers/tty/mips_ejtag_fdc.c

418 	struct mips_ejtag_fdc_tty_port *dport;
425 	dport = &priv->ports[chan];
426 	spin_lock(&dport->xmit_lock);
427 	if (dport->xmit_cnt) {
428 		ptrs[0] = dport->port.xmit_buf + dport->xmit_tail;
430 				 priv->xmit_size - dport->xmit_tail,
431 				 dport->xmit_cnt);
432 		ptrs[1] = dport->port.xmit_buf;
433 		sizes[1] = dport->xmit_cnt - sizes[0];
449 		dport->xmit_cnt -= word.bytes;
450 		if (!dport->xmit_cnt) {
452 			dport->xmit_head = 0;
453 			dport->xmit_tail = 0;
454 			complete(&dport->xmit_empty);
456 			dport->xmit_tail += word.bytes;
457 			if (dport->xmit_tail >= priv->xmit_size)
458 				dport->xmit_tail -= priv->xmit_size;
462 	spin_unlock(&dport->xmit_lock);
466 		tty = tty_port_tty_get(&dport->port);
486 	struct mips_ejtag_fdc_tty_port *dport;
521 			dport = &priv->ports[priv->xmit_next];
522 			spin_lock(&dport->xmit_lock);
523 			ret = dport->xmit_cnt;
524 			spin_unlock(&dport->xmit_lock);
560 	struct mips_ejtag_fdc_tty_port *dport;
571 		dport = &priv->ports[channel];
574 		raw_spin_lock(&dport->rx_lock);
609 			if (!dport->rx_buf)
612 			flipped += tty_insert_flip_char(&dport->port, buf[i],
616 			tty_flip_buffer_push(&dport->port);
618 		raw_spin_unlock(&dport->rx_lock);
698 	struct mips_ejtag_fdc_tty_port *dport =
711 	raw_spin_lock_irq(&dport->rx_lock);
712 	dport->rx_buf = rx_buf;
713 	raw_spin_unlock_irq(&dport->rx_lock);
724 	struct mips_ejtag_fdc_tty_port *dport =
726 	struct mips_ejtag_fdc_tty *priv = dport->driver;
730 	spin_lock(&dport->xmit_lock);
731 	count = dport->xmit_cnt;
732 	spin_unlock(&dport->xmit_lock);
739 		wait_for_completion(&dport->xmit_empty);
743 	raw_spin_lock_irq(&dport->rx_lock);
744 	rx_buf = dport->rx_buf;
745 	dport->rx_buf = NULL;
746 	raw_spin_unlock_irq(&dport->rx_lock);
782 	struct mips_ejtag_fdc_tty_port *dport = tty->driver_data;
783 	struct mips_ejtag_fdc_tty *priv = dport->driver;
786 	spin_lock(&dport->xmit_lock);
787 	if (dport->xmit_cnt) {
788 		atomic_sub(dport->xmit_cnt, &priv->xmit_total);
789 		dport->xmit_cnt = 0;
790 		dport->xmit_head = 0;
791 		dport->xmit_tail = 0;
792 		complete(&dport->xmit_empty);
794 	spin_unlock(&dport->xmit_lock);
803 	struct mips_ejtag_fdc_tty_port *dport = tty->driver_data;
804 	struct mips_ejtag_fdc_tty *priv = dport->driver;
817 	spin_lock(&dport->xmit_lock);
819 	total = min_t(size_t, total, priv->xmit_size - dport->xmit_cnt);
821 	dport->xmit_cnt += total;
824 		block = min(count, (int)(priv->xmit_size - dport->xmit_head));
825 		memcpy(dport->port.xmit_buf + dport->xmit_head, buf, block);
826 		dport->xmit_head += block;
827 		if (dport->xmit_head >= priv->xmit_size)
828 			dport->xmit_head -= priv->xmit_size;
831 	count = dport->xmit_cnt;
834 		reinit_completion(&dport->xmit_empty);
835 	spin_unlock(&dport->xmit_lock);
845 	struct mips_ejtag_fdc_tty_port *dport = tty->driver_data;
846 	struct mips_ejtag_fdc_tty *priv = dport->driver;
850 	spin_lock(&dport->xmit_lock);
851 	room = priv->xmit_size - dport->xmit_cnt;
852 	spin_unlock(&dport->xmit_lock);
859 	struct mips_ejtag_fdc_tty_port *dport = tty->driver_data;
863 	spin_lock(&dport->xmit_lock);
864 	chars = dport->xmit_cnt;
865 	spin_unlock(&dport->xmit_lock);
888 	struct mips_ejtag_fdc_tty_port *dport;
941 		dport = &priv->ports[nport];
942 		dport->driver = priv;
943 		tty_port_init(&dport->port);
944 		dport->port.ops = &mips_ejtag_fdc_tty_port_ops;
945 		raw_spin_lock_init(&dport->rx_lock);
946 		spin_lock_init(&dport->xmit_lock);
948 		init_completion(&dport->xmit_empty);
949 		complete(&dport->xmit_empty);
1041 		dport = &priv->ports[nport];
1042 		tty_port_destroy(&dport->port);