Lines Matching refs:circ
483 struct circ_buf *circ;
488 circ = &ch->uart_port.state->xmit;
491 if (uart_circ_empty(circ))
507 writeb(circ->buf[circ->tail], &ch->ch_neo_uart->txrx);
509 "Tx data: %x\n", circ->buf[circ->tail]);
510 circ->tail = (circ->tail + 1) & (UART_XMIT_SIZE - 1);
525 head = circ->head & (UART_XMIT_SIZE - 1);
526 tail = circ->tail & (UART_XMIT_SIZE - 1);
527 qlen = uart_circ_chars_pending(circ);
540 memcpy_toio(&ch->ch_neo_uart->txrxburst, circ->buf + tail, s);
549 circ->tail = tail & (UART_XMIT_SIZE - 1);
554 if (uart_circ_empty(circ))