45 	struct circ_buf xmit;  member
113 	if (!info->xmit.buf)  in rs_put_char()
117 	if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {  in rs_put_char()
121 	info->xmit.buf[info->xmit.head] = ch;  in rs_put_char()
122 	info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);  in rs_put_char()
145 	if (info->xmit.head == info->xmit.tail || tty->stopped) {  in transmit_chars()
148 		       info->xmit.head, info->xmit.tail, tty->stopped);  in transmit_chars()
160 	count = min(CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),  in transmit_chars()
161 		    SERIAL_XMIT_SIZE - info->xmit.tail);  in transmit_chars()
162 	console->write(console, info->xmit.buf+info->xmit.tail, count);  in transmit_chars()
164 	info->xmit.tail = (info->xmit.tail+count) & (SERIAL_XMIT_SIZE-1);  in transmit_chars()
169 	count = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);  in transmit_chars()
171 		console->write(console, info->xmit.buf, count);  in transmit_chars()
172 		info->xmit.tail += count;  in transmit_chars()
182 	if (info->xmit.head == info->xmit.tail || tty->stopped ||  in rs_flush_chars()
183 			!info->xmit.buf)  in rs_flush_chars()
196 	if (!info->xmit.buf)  in rs_write()
201 		c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);  in rs_write()
207 		memcpy(info->xmit.buf + info->xmit.head, buf, c);  in rs_write()
208 		info->xmit.head = ((info->xmit.head + c) &  in rs_write()
218 	if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) &&  in rs_write()
229 	return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);  in rs_write_room()
236 	return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);  in rs_chars_in_buffer()
245 	info->xmit.head = info->xmit.tail = 0;  in rs_flush_buffer()
341 	if (info->xmit.buf) {  in shutdown()
342 		free_page((unsigned long) info->xmit.buf);  in shutdown()
343 		info->xmit.buf = NULL;  in shutdown()
376 	if (state->xmit.buf)  in activate()
379 		state->xmit.buf = (unsigned char *) page;  in activate()
388 	state->xmit.head = state->xmit.tail = 0;  in activate()