45 static void transmit_chars_putchar(struct uart_port *port, struct circ_buf *xmit)  in transmit_chars_putchar()  argument
54 		port->icount.tx++;  in transmit_chars_putchar()
58 static void transmit_chars_write(struct uart_port *port, struct circ_buf *xmit)  in transmit_chars_write()  argument
70 		port->icount.tx += sent;  in transmit_chars_write()
74 static int receive_chars_getchar(struct uart_port *port)  in receive_chars_getchar()  argument
87 			if (uart_handle_break(port))  in receive_chars_getchar()
95 			uart_handle_dcd_change(port, 0);  in receive_chars_getchar()
98 			uart_handle_dcd_change(port, 1);  in receive_chars_getchar()
101 		if (port->state == NULL) {  in receive_chars_getchar()
102 			uart_handle_sysrq_char(port, c);  in receive_chars_getchar()
106 		port->icount.rx++;  in receive_chars_getchar()
108 		if (uart_handle_sysrq_char(port, c))  in receive_chars_getchar()
111 		tty_insert_flip_char(&port->state->port, c, TTY_NORMAL);  in receive_chars_getchar()
117 static int receive_chars_read(struct uart_port *port)  in receive_chars_read()  argument
131 				if (uart_handle_break(port))  in receive_chars_read()
138 				uart_handle_dcd_change(port, 0);  in receive_chars_read()
148 			uart_handle_dcd_change(port, 1);  in receive_chars_read()
151 		if (port->sysrq != 0 &&  *con_read_page) {  in receive_chars_read()
153 				uart_handle_sysrq_char(port, con_read_page[i]);  in receive_chars_read()
156 		if (port->state == NULL)  in receive_chars_read()
159 		port->icount.rx += bytes_read;  in receive_chars_read()
161 		tty_insert_flip_string(&port->state->port, con_read_page,  in receive_chars_read()
169 	void (*transmit_chars)(struct uart_port *port, struct circ_buf *xmit);
170 	int (*receive_chars)(struct uart_port *port);
185 static struct tty_port *receive_chars(struct uart_port *port)  in receive_chars()  argument
189 	if (port->state != NULL)		/* Unopened serial console */  in receive_chars()
190 		tport = &port->state->port;  in receive_chars()
192 	if (sunhv_ops->receive_chars(port))  in receive_chars()
198 static void transmit_chars(struct uart_port *port)  in transmit_chars()  argument
202 	if (!port->state)  in transmit_chars()
205 	xmit = &port->state->xmit;  in transmit_chars()
206 	if (uart_circ_empty(xmit) || uart_tx_stopped(port))  in transmit_chars()
209 	sunhv_ops->transmit_chars(port, xmit);  in transmit_chars()
212 		uart_write_wakeup(port);  in transmit_chars()
217 	struct uart_port *port = dev_id;  in sunhv_interrupt()  local
221 	spin_lock_irqsave(&port->lock, flags);  in sunhv_interrupt()
222 	tport = receive_chars(port);  in sunhv_interrupt()
223 	transmit_chars(port);  in sunhv_interrupt()
224 	spin_unlock_irqrestore(&port->lock, flags);  in sunhv_interrupt()
233 static unsigned int sunhv_tx_empty(struct uart_port *port)  in sunhv_tx_empty()  argument
243 static void sunhv_set_mctrl(struct uart_port *port, unsigned int mctrl)  in sunhv_set_mctrl()  argument
249 static unsigned int sunhv_get_mctrl(struct uart_port *port)  in sunhv_get_mctrl()  argument
255 static void sunhv_stop_tx(struct uart_port *port)  in sunhv_stop_tx()  argument
261 static void sunhv_start_tx(struct uart_port *port)  in sunhv_start_tx()  argument
263 	transmit_chars(port);  in sunhv_start_tx()
267 static void sunhv_send_xchar(struct uart_port *port, char ch)  in sunhv_send_xchar()  argument
275 	spin_lock_irqsave(&port->lock, flags);  in sunhv_send_xchar()
284 	spin_unlock_irqrestore(&port->lock, flags);  in sunhv_send_xchar()
288 static void sunhv_stop_rx(struct uart_port *port)  in sunhv_stop_rx()  argument
293 static void sunhv_break_ctl(struct uart_port *port, int break_state)  in sunhv_break_ctl()  argument
299 		spin_lock_irqsave(&port->lock, flags);  in sunhv_break_ctl()
308 		spin_unlock_irqrestore(&port->lock, flags);  in sunhv_break_ctl()
313 static int sunhv_startup(struct uart_port *port)  in sunhv_startup()  argument
319 static void sunhv_shutdown(struct uart_port *port)  in sunhv_shutdown()  argument
324 static void sunhv_set_termios(struct uart_port *port, struct ktermios *termios,  in sunhv_set_termios()  argument
327 	unsigned int baud = uart_get_baud_rate(port, termios, old, 0, 4000000);  in sunhv_set_termios()
328 	unsigned int quot = uart_get_divisor(port, baud);  in sunhv_set_termios()
332 	spin_lock_irqsave(&port->lock, flags);  in sunhv_set_termios()
337 	port->ignore_status_mask = 0;  in sunhv_set_termios()
339 		port->ignore_status_mask |= IGNORE_BREAK;  in sunhv_set_termios()
341 		port->ignore_status_mask |= IGNORE_ALL;  in sunhv_set_termios()
344 	uart_update_timeout(port, cflag,  in sunhv_set_termios()
345 			    (port->uartclk / (16 * quot)));  in sunhv_set_termios()
347 	spin_unlock_irqrestore(&port->lock, flags);  in sunhv_set_termios()
350 static const char *sunhv_type(struct uart_port *port)  in sunhv_type()  argument
355 static void sunhv_release_port(struct uart_port *port)  in sunhv_release_port()  argument
359 static int sunhv_request_port(struct uart_port *port)  in sunhv_request_port()  argument
364 static void sunhv_config_port(struct uart_port *port, int flags)  in sunhv_config_port()  argument
368 static int sunhv_verify_port(struct uart_port *port, struct serial_struct *ser)  in sunhv_verify_port()  argument
430 	struct uart_port *port = sunhv_port;  in sunhv_console_write_paged()  local
434 	if (port->sysrq || oops_in_progress)  in sunhv_console_write_paged()
435 		locked = spin_trylock_irqsave(&port->lock, flags);  in sunhv_console_write_paged()
437 		spin_lock_irqsave(&port->lock, flags);  in sunhv_console_write_paged()
468 		spin_unlock_irqrestore(&port->lock, flags);  in sunhv_console_write_paged()
471 static inline void sunhv_console_putchar(struct uart_port *port, char c)  in sunhv_console_putchar()  argument
485 	struct uart_port *port = sunhv_port;  in sunhv_console_write_bychar()  local
489 	if (port->sysrq || oops_in_progress)  in sunhv_console_write_bychar()
490 		locked = spin_trylock_irqsave(&port->lock, flags);  in sunhv_console_write_bychar()
492 		spin_lock_irqsave(&port->lock, flags);  in sunhv_console_write_bychar()
493 	if (port->sysrq) {  in sunhv_console_write_bychar()
496 		locked = spin_trylock(&port->lock);  in sunhv_console_write_bychar()
498 		spin_lock(&port->lock);  in sunhv_console_write_bychar()
502 			sunhv_console_putchar(port, '\r');  in sunhv_console_write_bychar()
503 		sunhv_console_putchar(port, *s++);  in sunhv_console_write_bychar()
507 		spin_unlock_irqrestore(&port->lock, flags);  in sunhv_console_write_bychar()
521 	struct uart_port *port;  in hv_probe()  local
528 	port = kzalloc(sizeof(struct uart_port), GFP_KERNEL);  in hv_probe()
529 	if (unlikely(!port))  in hv_probe()
548 	sunhv_port = port;  in hv_probe()
550 	port->line = 0;  in hv_probe()
551 	port->ops = &sunhv_pops;  in hv_probe()
552 	port->type = PORT_SUNHV;  in hv_probe()
553 	port->uartclk = ( 29491200 / 16 ); /* arbitrary */  in hv_probe()
555 	port->membase = (unsigned char __iomem *) __pa(port);  in hv_probe()
557 	port->irq = op->archdata.irqs[0];  in hv_probe()
559 	port->dev = &op->dev;  in hv_probe()
566 				&sunhv_reg, port->line, false);  in hv_probe()
568 	err = uart_add_one_port(&sunhv_reg, port);  in hv_probe()
572 	err = request_irq(port->irq, sunhv_interrupt, 0, "hvcons", port);  in hv_probe()
576 	platform_set_drvdata(op, port);  in hv_probe()
581 	uart_remove_one_port(&sunhv_reg, port);  in hv_probe()
593 	kfree(port);  in hv_probe()
600 	struct uart_port *port = platform_get_drvdata(dev);  in hv_remove()  local
602 	free_irq(port->irq, port);  in hv_remove()
604 	uart_remove_one_port(&sunhv_reg, port);  in hv_remove()
608 	kfree(port);  in hv_remove()