157 	xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);  in bfin_serial_stop_tx()
341 	while ((UART_GET_LSR(uart) & THRE) && xmit->tail != xmit->head) {  in bfin_serial_tx_chars()
342 		UART_PUT_CHAR(uart, xmit->buf[xmit->tail]);  in bfin_serial_tx_chars()
343 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);  in bfin_serial_tx_chars()
393 	uart->tx_count = CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE);  in bfin_serial_dma_tx_chars()
394 	if (uart->tx_count > (UART_XMIT_SIZE - xmit->tail))  in bfin_serial_dma_tx_chars()
395 		uart->tx_count = UART_XMIT_SIZE - xmit->tail;  in bfin_serial_dma_tx_chars()
396 	blackfin_dcache_flush_range((unsigned long)(xmit->buf+xmit->tail),  in bfin_serial_dma_tx_chars()
397 					(unsigned long)(xmit->buf+xmit->tail+uart->tx_count));  in bfin_serial_dma_tx_chars()
404 	set_dma_start_addr(uart->tx_dma_channel, (unsigned long)(xmit->buf+xmit->tail));  in bfin_serial_dma_tx_chars()
421 		CIRC_CNT(uart->rx_dma_buf.head, uart->rx_dma_buf.tail,  in bfin_serial_dma_rx_chars()
448 	for (i = uart->rx_dma_buf.tail; ; i++) {  in bfin_serial_dma_rx_chars()
492 	if (pos > uart->rx_dma_buf.tail ||  in bfin_serial_rx_dma_timeout()
493 		uart->rx_dma_nrows < (uart->rx_dma_buf.tail/DMA_RX_XCOUNT)) {  in bfin_serial_rx_dma_timeout()
496 		uart->rx_dma_buf.tail = uart->rx_dma_buf.head;  in bfin_serial_rx_dma_timeout()
521 		if (!(xmit->tail == 0 && xmit->head == 0)) {  in bfin_serial_dma_tx_int()
522 			xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);  in bfin_serial_dma_tx_int()
552 	if (pos > uart->rx_dma_buf.tail ||  in bfin_serial_dma_rx_int()
553 		uart->rx_dma_nrows < (uart->rx_dma_buf.tail/DMA_RX_XCOUNT)) {  in bfin_serial_dma_rx_int()
556 		uart->rx_dma_buf.tail = uart->rx_dma_buf.head;  in bfin_serial_dma_rx_int()
615 	uart->rx_dma_buf.tail = 0;  in bfin_serial_startup()