149 	struct circ_buf *xmit = &uart->port.state->xmit;  in bfin_serial_stop_tx()  local
157 	xmit->tail = (xmit->tail + uart->tx_count) & (UART_XMIT_SIZE - 1);  in bfin_serial_stop_tx()
319 	struct circ_buf *xmit = &uart->port.state->xmit;  in bfin_serial_tx_chars()  local
321 	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {  in bfin_serial_tx_chars()
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()
347 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in bfin_serial_tx_chars()
377 	struct circ_buf *xmit = &uart->port.state->xmit;  in bfin_serial_dma_tx_chars()  local
381 	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {  in bfin_serial_dma_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()
508 	struct circ_buf *xmit = &uart->port.state->xmit;  in bfin_serial_dma_tx_int()  local
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()
524 			if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in bfin_serial_dma_tx_int()