72 	struct circ_buf		xmit;  member
156 	if (info->xmit.head != info->xmit.tail  in rs_start()
157 	    && info->xmit.buf  in rs_start()
276 	if (info->xmit.head == info->xmit.tail  in transmit_chars()
285 	amiga_custom.serdat = info->xmit.buf[info->xmit.tail++] | 0x100;  in transmit_chars()
287 	info->xmit.tail = info->xmit.tail & (UART_XMIT_SIZE - 1);  in transmit_chars()
290 	if (CIRC_CNT(info->xmit.head,  in transmit_chars()
291 		     info->xmit.tail,  in transmit_chars()
298 	if (info->xmit.head == info->xmit.tail) {  in transmit_chars()
461 	if (info->xmit.buf)  in startup()
464 		info->xmit.buf = (unsigned char *) page;  in startup()
498 	info->xmit.head = info->xmit.tail = 0;  in startup()
542 	free_page((unsigned long)info->xmit.buf);  in shutdown()
543 	info->xmit.buf = NULL;  in shutdown()
706 	if (!info->xmit.buf)  in rs_put_char()
710 	if (CIRC_SPACE(info->xmit.head,  in rs_put_char()
711 		       info->xmit.tail,  in rs_put_char()
717 	info->xmit.buf[info->xmit.head++] = ch;  in rs_put_char()
718 	info->xmit.head &= UART_XMIT_SIZE - 1;  in rs_put_char()
728 	if (info->xmit.head == info->xmit.tail  in rs_flush_chars()
731 	    || !info->xmit.buf)  in rs_flush_chars()
750 	if (!info->xmit.buf)  in rs_write()
755 		c = CIRC_SPACE_TO_END(info->xmit.head,  in rs_write()
756 				      info->xmit.tail,  in rs_write()
763 		memcpy(info->xmit.buf + info->xmit.head, buf, c);  in rs_write()
764 		info->xmit.head = (info->xmit.head + c) & (UART_XMIT_SIZE - 1);  in rs_write()
771 	if (info->xmit.head != info->xmit.tail  in rs_write()
791 	return CIRC_SPACE(info->xmit.head, info->xmit.tail, UART_XMIT_SIZE);  in rs_write_room()
798 	return CIRC_CNT(info->xmit.head, info->xmit.tail, UART_XMIT_SIZE);  in rs_chars_in_buffer()
807 	info->xmit.head = info->xmit.tail = 0;  in rs_flush_buffer()