47 	struct circ_buf xmit;  member
115 	if (!info->xmit.buf)  in rs_put_char()
119 	if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {  in rs_put_char()
123 	info->xmit.buf[info->xmit.head] = ch;  in rs_put_char()
124 	info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);  in rs_put_char()
147 	if (info->xmit.head == info->xmit.tail || tty->stopped) {  in transmit_chars()
150 		       info->xmit.head, info->xmit.tail, tty->stopped);  in transmit_chars()
162 	count = min(CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),  in transmit_chars()
163 		    SERIAL_XMIT_SIZE - info->xmit.tail);  in transmit_chars()
164 	console->write(console, info->xmit.buf+info->xmit.tail, count);  in transmit_chars()
166 	info->xmit.tail = (info->xmit.tail+count) & (SERIAL_XMIT_SIZE-1);  in transmit_chars()
171 	count = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);  in transmit_chars()
173 		console->write(console, info->xmit.buf, count);  in transmit_chars()
174 		info->xmit.tail += count;  in transmit_chars()
184 	if (info->xmit.head == info->xmit.tail || tty->stopped ||  in rs_flush_chars()
185 			!info->xmit.buf)  in rs_flush_chars()
198 	if (!info->xmit.buf)  in rs_write()
203 		c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);  in rs_write()
209 		memcpy(info->xmit.buf + info->xmit.head, buf, c);  in rs_write()
210 		info->xmit.head = ((info->xmit.head + c) &  in rs_write()
220 	if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) &&  in rs_write()
231 	return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);  in rs_write_room()
238 	return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);  in rs_chars_in_buffer()
247 	info->xmit.head = info->xmit.tail = 0;  in rs_flush_buffer()
343 	if (info->xmit.buf) {  in shutdown()
344 		free_page((unsigned long) info->xmit.buf);  in shutdown()
345 		info->xmit.buf = NULL;  in shutdown()
378 	if (state->xmit.buf)  in activate()
381 		state->xmit.buf = (unsigned char *) page;  in activate()
390 	state->xmit.head = state->xmit.tail = 0;  in activate()