100 #define to_sport(uport) container_of(uport, struct sbd_port, port)  argument
232 static unsigned int sbd_tx_empty(struct uart_port *uport)  in sbd_tx_empty()  argument
234 	struct sbd_port *sport = to_sport(uport);  in sbd_tx_empty()
239 static unsigned int sbd_get_mctrl(struct uart_port *uport)  in sbd_get_mctrl()  argument
241 	struct sbd_port *sport = to_sport(uport);  in sbd_get_mctrl()
245 	status >>= (uport->line) % 2;  in sbd_get_mctrl()
253 static void sbd_set_mctrl(struct uart_port *uport, unsigned int mctrl)  in sbd_set_mctrl()  argument
255 	struct sbd_port *sport = to_sport(uport);  in sbd_set_mctrl()
266 	clr <<= (uport->line) % 2;  in sbd_set_mctrl()
267 	set <<= (uport->line) % 2;  in sbd_set_mctrl()
281 static void sbd_stop_tx(struct uart_port *uport)  in sbd_stop_tx()  argument
283 	struct sbd_port *sport = to_sport(uport);  in sbd_stop_tx()
289 static void sbd_start_tx(struct uart_port *uport)  in sbd_start_tx()  argument
291 	struct sbd_port *sport = to_sport(uport);  in sbd_start_tx()
295 	mask = read_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2));  in sbd_start_tx()
297 	write_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2), mask);  in sbd_start_tx()
304 static void sbd_stop_rx(struct uart_port *uport)  in sbd_stop_rx()  argument
306 	struct sbd_port *sport = to_sport(uport);  in sbd_stop_rx()
308 	write_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2), 0);  in sbd_stop_rx()
311 static void sbd_enable_ms(struct uart_port *uport)  in sbd_enable_ms()  argument
313 	struct sbd_port *sport = to_sport(uport);  in sbd_enable_ms()
319 static void sbd_break_ctl(struct uart_port *uport, int break_state)  in sbd_break_ctl()  argument
321 	struct sbd_port *sport = to_sport(uport);  in sbd_break_ctl()
332 	struct uart_port *uport = &sport->port;  in sbd_receive_chars()  local
347 		icount = &uport->icount;  in sbd_receive_chars()
355 				if (uart_handle_break(uport))  in sbd_receive_chars()
364 			status &= uport->read_status_mask;  in sbd_receive_chars()
373 		if (uart_handle_sysrq_char(uport, ch))  in sbd_receive_chars()
376 		uart_insert_char(uport, status, M_DUART_OVRUN_ERR, ch, flag);  in sbd_receive_chars()
379 	tty_flip_buffer_push(&uport->state->port);  in sbd_receive_chars()
384 	struct uart_port *uport = &sport->port;  in sbd_transmit_chars()  local
412 		mask = read_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2));  in sbd_transmit_chars()
414 		write_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2), mask);  in sbd_transmit_chars()
420 	struct uart_port *uport = &sport->port;  in sbd_status_handle()  local
423 	delta = read_sbdshr(sport, R_DUART_INCHREG((uport->line) % 2));  in sbd_status_handle()
424 	delta >>= (uport->line) % 2;  in sbd_status_handle()
427 		uart_handle_cts_change(uport, !(delta & M_DUART_IN_PIN0_VAL));  in sbd_status_handle()
430 		uport->icount.dsr++;  in sbd_status_handle()
434 		wake_up_interruptible(&uport->state->port.delta_msr_wait);  in sbd_status_handle()
440 	struct uart_port *uport = &sport->port;  in sbd_interrupt()  local
447 				      R_DUART_ISRREG((uport->line) % 2));  in sbd_interrupt()
449 				       R_DUART_IMRREG((uport->line) % 2));  in sbd_interrupt()
468 static int sbd_startup(struct uart_port *uport)  in sbd_startup()  argument
470 	struct sbd_port *sport = to_sport(uport);  in sbd_startup()
484 	read_sbdshr(sport, R_DUART_INCHREG((uport->line) % 2));  in sbd_startup()
496 	write_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2),  in sbd_startup()
502 static void sbd_shutdown(struct uart_port *uport)  in sbd_shutdown()  argument
504 	struct sbd_port *sport = to_sport(uport);  in sbd_shutdown()
514 	struct uart_port *uport = &sport->port;  in sbd_init_port()  local
528 	write_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2), 0);  in sbd_init_port()
533 static void sbd_set_termios(struct uart_port *uport, struct ktermios *termios,  in sbd_set_termios()  argument
536 	struct sbd_port *sport = to_sport(uport);  in sbd_set_termios()
578 	baud = uart_get_baud_rate(uport, termios, old_termios, 1200, 5000000);  in sbd_set_termios()
584 	uart_update_timeout(uport, termios->c_cflag, baud);  in sbd_set_termios()
586 	uport->read_status_mask = M_DUART_OVRUN_ERR;  in sbd_set_termios()
588 		uport->read_status_mask |= M_DUART_FRM_ERR |  in sbd_set_termios()
591 		uport->read_status_mask |= M_DUART_RCVD_BRK;  in sbd_set_termios()
593 	uport->ignore_status_mask = 0;  in sbd_set_termios()
595 		uport->ignore_status_mask |= M_DUART_FRM_ERR |  in sbd_set_termios()
598 		uport->ignore_status_mask |= M_DUART_RCVD_BRK;  in sbd_set_termios()
600 			uport->ignore_status_mask |= M_DUART_OVRUN_ERR;  in sbd_set_termios()
613 	spin_lock(&uport->lock);  in sbd_set_termios()
635 	spin_unlock(&uport->lock);  in sbd_set_termios()
639 static const char *sbd_type(struct uart_port *uport)  in sbd_type()  argument
644 static void sbd_release_port(struct uart_port *uport)  in sbd_release_port()  argument
646 	struct sbd_port *sport = to_sport(uport);  in sbd_release_port()
651 	iounmap(uport->membase);  in sbd_release_port()
652 	uport->membase = NULL;  in sbd_release_port()
656 	release_mem_region(uport->mapbase, DUART_CHANREG_SPACING);  in sbd_release_port()
659 static int sbd_map_port(struct uart_port *uport)  in sbd_map_port()  argument
662 	struct sbd_port *sport = to_sport(uport);  in sbd_map_port()
665 	if (!uport->membase)  in sbd_map_port()
666 		uport->membase = ioremap(uport->mapbase,  in sbd_map_port()
668 	if (!uport->membase) {  in sbd_map_port()
678 		iounmap(uport->membase);  in sbd_map_port()
679 		uport->membase = NULL;  in sbd_map_port()
686 static int sbd_request_port(struct uart_port *uport)  in sbd_request_port()  argument
689 	struct sbd_duart *duart = to_sport(uport)->duart;  in sbd_request_port()
692 	if (!request_mem_region(uport->mapbase, DUART_CHANREG_SPACING,  in sbd_request_port()
707 		ret = sbd_map_port(uport);  in sbd_request_port()
715 		release_mem_region(uport->mapbase, DUART_CHANREG_SPACING);  in sbd_request_port()
721 static void sbd_config_port(struct uart_port *uport, int flags)  in sbd_config_port()  argument
723 	struct sbd_port *sport = to_sport(uport);  in sbd_config_port()
726 		if (sbd_request_port(uport))  in sbd_config_port()
729 		uport->type = PORT_SB1250_DUART;  in sbd_config_port()
735 static int sbd_verify_port(struct uart_port *uport, struct serial_struct *ser)  in sbd_verify_port()  argument
741 	if (ser->irq != uport->irq)  in sbd_verify_port()
743 	if (ser->baud_base != uport->uartclk / 16)  in sbd_verify_port()
799 			struct uart_port *uport = &sport->port;  in sbd_probe_duarts()  local
803 			uport->irq	= SBD_INT(line);  in sbd_probe_duarts()
804 			uport->uartclk	= 100000000 / 20 * 16;  in sbd_probe_duarts()
805 			uport->fifosize	= 16;  in sbd_probe_duarts()
806 			uport->iotype	= UPIO_MEM;  in sbd_probe_duarts()
807 			uport->flags	= UPF_BOOT_AUTOCONF;  in sbd_probe_duarts()
808 			uport->ops	= &sbd_ops;  in sbd_probe_duarts()
809 			uport->line	= line;  in sbd_probe_duarts()
810 			uport->mapbase	= SBD_CHANREGS(line);  in sbd_probe_duarts()
811 			uport->has_sysrq = IS_ENABLED(CONFIG_SERIAL_SB1250_DUART_CONSOLE);  in sbd_probe_duarts()
823 static void sbd_console_putchar(struct uart_port *uport, unsigned char ch)  in sbd_console_putchar()  argument
825 	struct sbd_port *sport = to_sport(uport);  in sbd_console_putchar()
837 	struct uart_port *uport = &sport->port;  in sbd_console_write()  local
842 	spin_lock_irqsave(&uport->lock, flags);  in sbd_console_write()
843 	mask = read_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2));  in sbd_console_write()
844 	write_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2),  in sbd_console_write()
847 	spin_unlock_irqrestore(&uport->lock, flags);  in sbd_console_write()
852 	spin_lock_irqsave(&uport->lock, flags);  in sbd_console_write()
856 	write_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2), mask);  in sbd_console_write()
857 	spin_unlock_irqrestore(&uport->lock, flags);  in sbd_console_write()
865 	struct uart_port *uport = &sport->port;  in sbd_console_setup()  local
875 	ret = sbd_map_port(uport);  in sbd_console_setup()
883 	return uart_set_options(uport, co, baud, parity, bits, flow);  in sbd_console_setup()
937 		struct uart_port *uport = &sport->port;  in sbd_init()  local
940 			uart_add_one_port(&sbd_reg, uport);  in sbd_init()
954 		struct uart_port *uport = &sport->port;  in sbd_exit()  local
957 			uart_remove_one_port(&sbd_reg, uport);  in sbd_exit()