46 static void transmit_chars_putchar(struct uart_port *port, struct circ_buf *xmit)  in transmit_chars_putchar()  argument
55 		port->icount.tx++;  in transmit_chars_putchar()
59 static void transmit_chars_write(struct uart_port *port, struct circ_buf *xmit)  in transmit_chars_write()  argument
71 		port->icount.tx += sent;  in transmit_chars_write()
75 static int receive_chars_getchar(struct uart_port *port)  in receive_chars_getchar()  argument
88 			if (uart_handle_break(port))  in receive_chars_getchar()
96 			uart_handle_dcd_change(port, 0);  in receive_chars_getchar()
99 			uart_handle_dcd_change(port, 1);  in receive_chars_getchar()
102 		if (port->state == NULL) {  in receive_chars_getchar()
103 			uart_handle_sysrq_char(port, c);  in receive_chars_getchar()
107 		port->icount.rx++;  in receive_chars_getchar()
109 		if (uart_handle_sysrq_char(port, c))  in receive_chars_getchar()
112 		tty_insert_flip_char(&port->state->port, c, TTY_NORMAL);  in receive_chars_getchar()
118 static int receive_chars_read(struct uart_port *port)  in receive_chars_read()  argument
132 				if (uart_handle_break(port))  in receive_chars_read()
139 				uart_handle_dcd_change(port, 0);  in receive_chars_read()
149 			uart_handle_dcd_change(port, 1);  in receive_chars_read()
153 			uart_handle_sysrq_char(port, con_read_page[i]);  in receive_chars_read()
155 		if (port->state == NULL)  in receive_chars_read()
158 		port->icount.rx += bytes_read;  in receive_chars_read()
160 		tty_insert_flip_string(&port->state->port, con_read_page,  in receive_chars_read()
168 	void (*transmit_chars)(struct uart_port *port, struct circ_buf *xmit);
169 	int (*receive_chars)(struct uart_port *port);
184 static struct tty_port *receive_chars(struct uart_port *port)  in receive_chars()  argument
188 	if (port->state != NULL)		/* Unopened serial console */  in receive_chars()
189 		tport = &port->state->port;  in receive_chars()
191 	if (sunhv_ops->receive_chars(port))  in receive_chars()
197 static void transmit_chars(struct uart_port *port)  in transmit_chars()  argument
201 	if (!port->state)  in transmit_chars()
204 	xmit = &port->state->xmit;  in transmit_chars()
205 	if (uart_circ_empty(xmit) || uart_tx_stopped(port))  in transmit_chars()
208 	sunhv_ops->transmit_chars(port, xmit);  in transmit_chars()
211 		uart_write_wakeup(port);  in transmit_chars()
216 	struct uart_port *port = dev_id;  in sunhv_interrupt()  local
220 	spin_lock_irqsave(&port->lock, flags);  in sunhv_interrupt()
221 	tport = receive_chars(port);  in sunhv_interrupt()
222 	transmit_chars(port);  in sunhv_interrupt()
223 	spin_unlock_irqrestore(&port->lock, flags);  in sunhv_interrupt()
232 static unsigned int sunhv_tx_empty(struct uart_port *port)  in sunhv_tx_empty()  argument
242 static void sunhv_set_mctrl(struct uart_port *port, unsigned int mctrl)  in sunhv_set_mctrl()  argument
248 static unsigned int sunhv_get_mctrl(struct uart_port *port)  in sunhv_get_mctrl()  argument
254 static void sunhv_stop_tx(struct uart_port *port)  in sunhv_stop_tx()  argument
260 static void sunhv_start_tx(struct uart_port *port)  in sunhv_start_tx()  argument
262 	transmit_chars(port);  in sunhv_start_tx()
266 static void sunhv_send_xchar(struct uart_port *port, char ch)  in sunhv_send_xchar()  argument
274 	spin_lock_irqsave(&port->lock, flags);  in sunhv_send_xchar()
283 	spin_unlock_irqrestore(&port->lock, flags);  in sunhv_send_xchar()
287 static void sunhv_stop_rx(struct uart_port *port)  in sunhv_stop_rx()  argument
292 static void sunhv_break_ctl(struct uart_port *port, int break_state)  in sunhv_break_ctl()  argument
298 		spin_lock_irqsave(&port->lock, flags);  in sunhv_break_ctl()
307 		spin_unlock_irqrestore(&port->lock, flags);  in sunhv_break_ctl()
312 static int sunhv_startup(struct uart_port *port)  in sunhv_startup()  argument
318 static void sunhv_shutdown(struct uart_port *port)  in sunhv_shutdown()  argument
323 static void sunhv_set_termios(struct uart_port *port, struct ktermios *termios,  in sunhv_set_termios()  argument
326 	unsigned int baud = uart_get_baud_rate(port, termios, old, 0, 4000000);  in sunhv_set_termios()
327 	unsigned int quot = uart_get_divisor(port, baud);  in sunhv_set_termios()
331 	spin_lock_irqsave(&port->lock, flags);  in sunhv_set_termios()
336 	port->ignore_status_mask = 0;  in sunhv_set_termios()
338 		port->ignore_status_mask |= IGNORE_BREAK;  in sunhv_set_termios()
340 		port->ignore_status_mask |= IGNORE_ALL;  in sunhv_set_termios()
343 	uart_update_timeout(port, cflag,  in sunhv_set_termios()
344 			    (port->uartclk / (16 * quot)));  in sunhv_set_termios()
346 	spin_unlock_irqrestore(&port->lock, flags);  in sunhv_set_termios()
349 static const char *sunhv_type(struct uart_port *port)  in sunhv_type()  argument
354 static void sunhv_release_port(struct uart_port *port)  in sunhv_release_port()  argument
358 static int sunhv_request_port(struct uart_port *port)  in sunhv_request_port()  argument
363 static void sunhv_config_port(struct uart_port *port, int flags)  in sunhv_config_port()  argument
367 static int sunhv_verify_port(struct uart_port *port, struct serial_struct *ser)  in sunhv_verify_port()  argument
429 	struct uart_port *port = sunhv_port;  in sunhv_console_write_paged()  local
433 	if (port->sysrq || oops_in_progress)  in sunhv_console_write_paged()
434 		locked = spin_trylock_irqsave(&port->lock, flags);  in sunhv_console_write_paged()
436 		spin_lock_irqsave(&port->lock, flags);  in sunhv_console_write_paged()
467 		spin_unlock_irqrestore(&port->lock, flags);  in sunhv_console_write_paged()
470 static inline void sunhv_console_putchar(struct uart_port *port, char c)  in sunhv_console_putchar()  argument
484 	struct uart_port *port = sunhv_port;  in sunhv_console_write_bychar()  local
488 	if (port->sysrq || oops_in_progress)  in sunhv_console_write_bychar()
489 		locked = spin_trylock_irqsave(&port->lock, flags);  in sunhv_console_write_bychar()
491 		spin_lock_irqsave(&port->lock, flags);  in sunhv_console_write_bychar()
492 	if (port->sysrq) {  in sunhv_console_write_bychar()
495 		locked = spin_trylock(&port->lock);  in sunhv_console_write_bychar()
497 		spin_lock(&port->lock);  in sunhv_console_write_bychar()
501 			sunhv_console_putchar(port, '\r');  in sunhv_console_write_bychar()
502 		sunhv_console_putchar(port, *s++);  in sunhv_console_write_bychar()
506 		spin_unlock_irqrestore(&port->lock, flags);  in sunhv_console_write_bychar()
520 	struct uart_port *port;  in hv_probe()  local
527 	port = kzalloc(sizeof(struct uart_port), GFP_KERNEL);  in hv_probe()
528 	if (unlikely(!port))  in hv_probe()
547 	sunhv_port = port;  in hv_probe()
549 	port->line = 0;  in hv_probe()
550 	port->ops = &sunhv_pops;  in hv_probe()
551 	port->type = PORT_SUNHV;  in hv_probe()
552 	port->uartclk = ( 29491200 / 16 ); /* arbitrary */  in hv_probe()
554 	port->membase = (unsigned char __iomem *) __pa(port);  in hv_probe()
556 	port->irq = op->archdata.irqs[0];  in hv_probe()
558 	port->dev = &op->dev;  in hv_probe()
565 				&sunhv_reg, port->line, false);  in hv_probe()
567 	err = uart_add_one_port(&sunhv_reg, port);  in hv_probe()
571 	err = request_irq(port->irq, sunhv_interrupt, 0, "hvcons", port);  in hv_probe()
575 	platform_set_drvdata(op, port);  in hv_probe()
580 	uart_remove_one_port(&sunhv_reg, port);  in hv_probe()
592 	kfree(port);  in hv_probe()
599 	struct uart_port *port = platform_get_drvdata(dev);  in hv_remove()  local
601 	free_irq(port->irq, port);  in hv_remove()
603 	uart_remove_one_port(&sunhv_reg, port);  in hv_remove()
607 	kfree(port);  in hv_remove()