Lines Matching refs:circ
482 struct circ_buf *circ;
487 circ = &ch->uart_port.state->xmit;
490 if (uart_circ_empty(circ))
506 writeb(circ->buf[circ->tail], &ch->ch_neo_uart->txrx);
508 "Tx data: %x\n", circ->buf[circ->tail]);
509 circ->tail = (circ->tail + 1) & (UART_XMIT_SIZE - 1);
524 head = circ->head & (UART_XMIT_SIZE - 1);
525 tail = circ->tail & (UART_XMIT_SIZE - 1);
526 qlen = uart_circ_chars_pending(circ);
539 memcpy_toio(&ch->ch_neo_uart->txrxburst, circ->buf + tail, s);
548 circ->tail = tail & (UART_XMIT_SIZE - 1);
553 if (uart_circ_empty(circ))