Lines Matching full:line
22 struct line *line = chan->line; in line_interrupt() local
24 if (line) in line_interrupt()
25 chan_interrupt(line, irq); in line_interrupt()
31 * Returns the free space inside the ring buffer of this line.
33 * Should be called while holding line->lock (this does not modify data).
35 static int write_room(struct line *line) in write_room() argument
39 if (line->buffer == NULL) in write_room()
43 n = line->head - line->tail; in write_room()
52 struct line *line = tty->driver_data; in line_write_room() local
56 spin_lock_irqsave(&line->lock, flags); in line_write_room()
57 room = write_room(line); in line_write_room()
58 spin_unlock_irqrestore(&line->lock, flags); in line_write_room()
65 struct line *line = tty->driver_data; in line_chars_in_buffer() local
69 spin_lock_irqsave(&line->lock, flags); in line_chars_in_buffer()
71 ret = LINE_BUFSIZE - (write_room(line) + 1); in line_chars_in_buffer()
72 spin_unlock_irqrestore(&line->lock, flags); in line_chars_in_buffer()
79 * this line.
84 * Must be called while holding line->lock!
86 static int buffer_data(struct line *line, const char *buf, int len) in buffer_data() argument
90 if (line->buffer == NULL) { in buffer_data()
91 line->buffer = kmalloc(LINE_BUFSIZE, GFP_ATOMIC); in buffer_data()
92 if (line->buffer == NULL) { in buffer_data()
97 line->head = line->buffer; in buffer_data()
98 line->tail = line->buffer; in buffer_data()
101 room = write_room(line); in buffer_data()
104 end = line->buffer + LINE_BUFSIZE - line->tail; in buffer_data()
107 memcpy(line->tail, buf, len); in buffer_data()
108 line->tail += len; in buffer_data()
112 memcpy(line->tail, buf, end); in buffer_data()
114 memcpy(line->buffer, buf, len - end); in buffer_data()
115 line->tail = line->buffer + len - end; in buffer_data()
123 * called, passing it line->head as buffer, and an appropriate count.
129 * Must be called while holding line->lock!*/
130 static int flush_buffer(struct line *line) in flush_buffer() argument
134 if ((line->buffer == NULL) || (line->head == line->tail)) in flush_buffer()
137 if (line->tail < line->head) { in flush_buffer()
138 /* line->buffer + LINE_BUFSIZE is the end of the buffer! */ in flush_buffer()
139 count = line->buffer + LINE_BUFSIZE - line->head; in flush_buffer()
141 n = write_chan(line->chan_out, line->head, count, in flush_buffer()
142 line->driver->write_irq); in flush_buffer()
150 line->head = line->buffer; in flush_buffer()
152 line->head += n; in flush_buffer()
157 count = line->tail - line->head; in flush_buffer()
158 n = write_chan(line->chan_out, line->head, count, in flush_buffer()
159 line->driver->write_irq); in flush_buffer()
164 line->head += n; in flush_buffer()
165 return line->head == line->tail; in flush_buffer()
170 struct line *line = tty->driver_data; in line_flush_buffer() local
173 spin_lock_irqsave(&line->lock, flags); in line_flush_buffer()
174 flush_buffer(line); in line_flush_buffer()
175 spin_unlock_irqrestore(&line->lock, flags); in line_flush_buffer()
189 struct line *line = tty->driver_data; in line_write() local
193 spin_lock_irqsave(&line->lock, flags); in line_write()
194 if (line->head != line->tail) in line_write()
195 ret = buffer_data(line, buf, len); in line_write()
197 n = write_chan(line->chan_out, buf, len, in line_write()
198 line->driver->write_irq); in line_write()
207 ret += buffer_data(line, buf + n, len); in line_write()
210 spin_unlock_irqrestore(&line->lock, flags); in line_write()
221 struct line *line = tty->driver_data; in line_throttle() local
223 deactivate_chan(line->chan_in, line->driver->read_irq); in line_throttle()
224 line->throttled = 1; in line_throttle()
229 struct line *line = tty->driver_data; in line_unthrottle() local
231 line->throttled = 0; in line_unthrottle()
232 chan_interrupt(line, line->driver->read_irq); in line_unthrottle()
238 struct line *line = chan->line; in line_write_interrupt() local
246 spin_lock(&line->lock); in line_write_interrupt()
247 err = flush_buffer(line); in line_write_interrupt()
249 spin_unlock(&line->lock); in line_write_interrupt()
252 line->head = line->buffer; in line_write_interrupt()
253 line->tail = line->buffer; in line_write_interrupt()
255 spin_unlock(&line->lock); in line_write_interrupt()
257 tty_port_tty_wakeup(&line->port); in line_write_interrupt()
262 int line_setup_irq(int fd, int input, int output, struct line *line, void *data) in line_setup_irq() argument
264 const struct line_driver *driver = line->driver; in line_setup_irq()
283 struct line *line = tty->driver_data; in line_activate() local
285 ret = enable_chan(line); in line_activate()
289 if (!line->sigio) { in line_activate()
290 chan_enable_winch(line->chan_out, port); in line_activate()
291 line->sigio = 1; in line_activate()
294 chan_window_size(line, &tty->winsize.ws_row, in line_activate()
305 struct line *line = tty->driver_data; in line_destruct() local
307 if (line->sigio) { in line_destruct()
309 line->sigio = 0; in line_destruct()
320 struct line *line = tty->driver_data; in line_open() local
322 return tty_port_open(&line->port, tty, filp); in line_open()
326 struct line *line) in line_install() argument
334 tty->driver_data = line; in line_install()
341 struct line *line = tty->driver_data; in line_close() local
343 tty_port_close(&line->port, tty, filp); in line_close()
348 struct line *line = tty->driver_data; in line_hangup() local
350 tty_port_hangup(&line->port); in line_hangup()
353 void close_lines(struct line *lines, int nlines) in close_lines()
361 int setup_one_line(struct line *lines, int n, char *init, in setup_one_line()
364 struct line *line = &lines[n]; in setup_one_line() local
365 struct tty_driver *driver = line->driver->driver; in setup_one_line()
368 if (line->port.count) { in setup_one_line()
374 if (line->valid) { in setup_one_line()
375 line->valid = 0; in setup_one_line()
376 kfree(line->init_str); in setup_one_line()
378 parse_chan_pair(NULL, line, n, opts, error_out); in setup_one_line()
387 if (line->valid) { in setup_one_line()
389 kfree(line->init_str); in setup_one_line()
391 line->init_str = new; in setup_one_line()
392 line->valid = 1; in setup_one_line()
393 err = parse_chan_pair(new, line, n, opts, error_out); in setup_one_line()
395 struct device *d = tty_port_register_device(&line->port, in setup_one_line()
400 parse_chan_pair(NULL, line, n, opts, error_out); in setup_one_line()
404 line->init_str = NULL; in setup_one_line()
405 line->valid = 0; in setup_one_line()
414 * Common setup code for both startup command line and mconsole initialization.
453 int line_config(struct line *lines, unsigned int num, char *str, in line_config()
477 int line_get_config(char *name, struct line *lines, unsigned int num, char *str, in line_get_config()
480 struct line *line; in line_get_config() local
495 line = &lines[dev]; in line_get_config()
497 if (!line->valid) in line_get_config()
500 struct tty_struct *tty = tty_port_tty_get(&line->port); in line_get_config()
502 CONFIG_CHUNK(str, size, n, line->init_str, 1); in line_get_config()
504 n = chan_config_string(line, str, size, error_out); in line_get_config()
527 int line_remove(struct line *lines, unsigned int num, int n, char **error_out) in line_remove()
538 struct line *lines, int nlines) in register_lines()
619 struct line *line; in winch_interrupt() local
645 line = tty->driver_data; in winch_interrupt()
646 if (line != NULL) { in winch_interrupt()
647 chan_window_size(line, &tty->winsize.ws_row, in winch_interrupt()