121 		struct uart_port *port;  in serial8250_interrupt()  local
124 		port = &up->port;  in serial8250_interrupt()
126 		if (port->handle_irq(port)) {  in serial8250_interrupt()
180 	h = &irq_lists[up->port.irq % NR_IRQ_HASH];  in serial_link_irq_chain()
183 		if (i->irq == up->port.irq)  in serial_link_irq_chain()
193 		i->irq = up->port.irq;  in serial_link_irq_chain()
209 		ret = request_irq(up->port.irq, serial8250_interrupt,  in serial_link_irq_chain()
210 				  up->port.irqflags, up->port.name, i);  in serial_link_irq_chain()
225 	h = &irq_lists[up->port.irq % NR_IRQ_HASH];  in serial_unlink_irq_chain()
228 		if (i->irq == up->port.irq)  in serial_unlink_irq_chain()
235 		free_irq(up->port.irq, i);  in serial_unlink_irq_chain()
251 	up->port.handle_irq(&up->port);  in serial8250_timeout()
252 	mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port));  in serial8250_timeout()
261 	spin_lock_irqsave(&up->port.lock, flags);  in serial8250_backup_timeout()
267 	if (up->port.irq) {  in serial8250_backup_timeout()
282 	    (!uart_circ_empty(&up->port.state->xmit) || up->port.x_char) &&  in serial8250_backup_timeout()
291 	if (up->port.irq)  in serial8250_backup_timeout()
294 	spin_unlock_irqrestore(&up->port.lock, flags);  in serial8250_backup_timeout()
298 		jiffies + uart_poll_timeout(&up->port) + HZ / 5);  in serial8250_backup_timeout()
303 	struct uart_port *port = &up->port;  in univ8250_setup_timer()  local
310 		pr_debug("%s - using backup timer\n", port->name);  in univ8250_setup_timer()
314 			  uart_poll_timeout(port) + HZ / 5);  in univ8250_setup_timer()
322 	if (!port->irq)  in univ8250_setup_timer()
323 		mod_timer(&up->timer, jiffies + uart_poll_timeout(port));  in univ8250_setup_timer()
328 	struct uart_port *port = &up->port;  in univ8250_setup_irq()  local
330 	if (port->irq)  in univ8250_setup_irq()
338 	struct uart_port *port = &up->port;  in univ8250_release_irq()  local
342 	if (port->irq)  in univ8250_release_irq()
349 	unsigned long start = UART_RSA_BASE << up->port.regshift;  in serial8250_request_rsa_resource()
350 	unsigned int size = 8 << up->port.regshift;  in serial8250_request_rsa_resource()
351 	struct uart_port *port = &up->port;  in serial8250_request_rsa_resource()  local
354 	switch (port->iotype) {  in serial8250_request_rsa_resource()
357 		start += port->iobase;  in serial8250_request_rsa_resource()
370 	unsigned long offset = UART_RSA_BASE << up->port.regshift;  in serial8250_release_rsa_resource()
371 	unsigned int size = 8 << up->port.regshift;  in serial8250_release_rsa_resource()
372 	struct uart_port *port = &up->port;  in serial8250_release_rsa_resource()  local
374 	switch (port->iotype) {  in serial8250_release_rsa_resource()
377 		release_region(port->iobase + offset, size);  in serial8250_release_rsa_resource()
412 static void (*serial8250_isa_config)(int port, struct uart_port *up,
416 	void (*v)(int port, struct uart_port *up, u32 *capabilities))  in serial8250_set_isa_configurator()  argument
424 static void univ8250_config_port(struct uart_port *port, int flags)  in univ8250_config_port()  argument
426 	struct uart_8250_port *up = up_to_u8250p(port);  in univ8250_config_port()
429 	if (port->type == PORT_RSA) {  in univ8250_config_port()
436 			if (probe_rsa[i] == up->port.iobase) {  in univ8250_config_port()
444 	base_ops->config_port(port, flags);  in univ8250_config_port()
446 	if (port->type != PORT_RSA && up->probe & UART_PROBE_RSA)  in univ8250_config_port()
450 static int univ8250_request_port(struct uart_port *port)  in univ8250_request_port()  argument
452 	struct uart_8250_port *up = up_to_u8250p(port);  in univ8250_request_port()
455 	ret = base_ops->request_port(port);  in univ8250_request_port()
456 	if (ret == 0 && port->type == PORT_RSA) {  in univ8250_request_port()
459 			base_ops->release_port(port);  in univ8250_request_port()
465 static void univ8250_release_port(struct uart_port *port)  in univ8250_release_port()  argument
467 	struct uart_8250_port *up = up_to_u8250p(port);  in univ8250_release_port()
469 	if (port->type == PORT_RSA)  in univ8250_release_port()
471 	base_ops->release_port(port);  in univ8250_release_port()
487 	up->port.quirks |= skip_txen_test ? UPQ_NO_TXEN_TEST : 0;  in serial8250_apply_quirks()
505 		struct uart_port *port = &up->port;  in serial8250_isa_init_ports()  local
507 		port->line = i;  in serial8250_isa_init_ports()
510 			base_ops = port->ops;  in serial8250_isa_init_ports()
511 		port->ops = &univ8250_port_ops;  in serial8250_isa_init_ports()
519 			port->set_mctrl = alpha_jensen_set_mctrl;  in serial8250_isa_init_ports()
534 		struct uart_port *port = &up->port;  in serial8250_isa_init_ports()  local
536 		port->iobase   = old_serial_port[i].port;  in serial8250_isa_init_ports()
537 		port->irq      = irq_canonicalize(old_serial_port[i].irq);  in serial8250_isa_init_ports()
538 		port->irqflags = 0;  in serial8250_isa_init_ports()
539 		port->uartclk  = old_serial_port[i].baud_base * 16;  in serial8250_isa_init_ports()
540 		port->flags    = old_serial_port[i].flags;  in serial8250_isa_init_ports()
541 		port->hub6     = 0;  in serial8250_isa_init_ports()
542 		port->membase  = old_serial_port[i].iomem_base;  in serial8250_isa_init_ports()
543 		port->iotype   = old_serial_port[i].io_type;  in serial8250_isa_init_ports()
544 		port->regshift = old_serial_port[i].iomem_reg_shift;  in serial8250_isa_init_ports()
546 		port->irqflags |= irqflag;  in serial8250_isa_init_ports()
548 			serial8250_isa_config(i, &up->port, &up->capabilities);  in serial8250_isa_init_ports()
560 		if (up->port.type == PORT_8250_CIR)  in serial8250_register_ports()
563 		if (up->port.dev)  in serial8250_register_ports()
566 		up->port.dev = dev;  in serial8250_register_ports()
568 		if (uart_console_enabled(&up->port))  in serial8250_register_ports()
569 			pm_runtime_get_sync(up->port.dev);  in serial8250_register_ports()
572 		uart_add_one_port(drv, &up->port);  in serial8250_register_ports()
588 	struct uart_port *port;  in univ8250_console_setup()  local
598 	port = &serial8250_ports[co->index].port;  in univ8250_console_setup()
600 	port->cons = co;  in univ8250_console_setup()
602 	retval = serial8250_console_setup(port, options, false);  in univ8250_console_setup()
604 		port->cons = NULL;  in univ8250_console_setup()
610 	struct uart_port *port;  in univ8250_console_exit()  local
612 	port = &serial8250_ports[co->index].port;  in univ8250_console_exit()
613 	return serial8250_console_exit(port);  in univ8250_console_exit()
650 		struct uart_port *port = &serial8250_ports[i].port;  in univ8250_console_match()  local
652 		if (port->iotype != iotype)  in univ8250_console_match()
656 		    && (port->mapbase != addr))  in univ8250_console_match()
658 		if (iotype == UPIO_PORT && port->iobase != addr)  in univ8250_console_match()
662 		port->cons = co;  in univ8250_console_match()
663 		return serial8250_console_setup(port, options, true);  in univ8250_console_match()
712 int __init early_serial_setup(struct uart_port *port)  in early_serial_setup()  argument
716 	if (port->line >= ARRAY_SIZE(serial8250_ports) || nr_uarts == 0)  in early_serial_setup()
720 	p = &serial8250_ports[port->line].port;  in early_serial_setup()
721 	p->iobase       = port->iobase;  in early_serial_setup()
722 	p->membase      = port->membase;  in early_serial_setup()
723 	p->irq          = port->irq;  in early_serial_setup()
724 	p->irqflags     = port->irqflags;  in early_serial_setup()
725 	p->uartclk      = port->uartclk;  in early_serial_setup()
726 	p->fifosize     = port->fifosize;  in early_serial_setup()
727 	p->regshift     = port->regshift;  in early_serial_setup()
728 	p->iotype       = port->iotype;  in early_serial_setup()
729 	p->flags        = port->flags;  in early_serial_setup()
730 	p->mapbase      = port->mapbase;  in early_serial_setup()
731 	p->mapsize      = port->mapsize;  in early_serial_setup()
732 	p->private_data = port->private_data;  in early_serial_setup()
733 	p->type		= port->type;  in early_serial_setup()
734 	p->line		= port->line;  in early_serial_setup()
738 	if (port->serial_in)  in early_serial_setup()
739 		p->serial_in = port->serial_in;  in early_serial_setup()
740 	if (port->serial_out)  in early_serial_setup()
741 		p->serial_out = port->serial_out;  in early_serial_setup()
742 	if (port->handle_irq)  in early_serial_setup()
743 		p->handle_irq = port->handle_irq;  in early_serial_setup()
757 	struct uart_port *port = &up->port;  in serial8250_suspend_port()  local
759 	if (!console_suspend_enabled && uart_console(port) &&  in serial8250_suspend_port()
760 	    port->type != PORT_8250) {  in serial8250_suspend_port()
768 	uart_suspend_port(&serial8250_reg, port);  in serial8250_suspend_port()
781 	struct uart_port *port = &up->port;  in serial8250_resume_port()  local
787 		serial_port_out(port, UART_LCR, 0xE0);  in serial8250_resume_port()
791 		serial_port_out(port, UART_LCR, 0);  in serial8250_resume_port()
792 		port->uartclk = 921600*16;  in serial8250_resume_port()
794 	uart_resume_port(&serial8250_reg, port);  in serial8250_resume_port()
815 		uart.port.iobase	= p->iobase;  in serial8250_probe()
816 		uart.port.membase	= p->membase;  in serial8250_probe()
817 		uart.port.irq		= p->irq;  in serial8250_probe()
818 		uart.port.irqflags	= p->irqflags;  in serial8250_probe()
819 		uart.port.uartclk	= p->uartclk;  in serial8250_probe()
820 		uart.port.regshift	= p->regshift;  in serial8250_probe()
821 		uart.port.iotype	= p->iotype;  in serial8250_probe()
822 		uart.port.flags		= p->flags;  in serial8250_probe()
823 		uart.port.mapbase	= p->mapbase;  in serial8250_probe()
824 		uart.port.hub6		= p->hub6;  in serial8250_probe()
825 		uart.port.has_sysrq	= p->has_sysrq;  in serial8250_probe()
826 		uart.port.private_data	= p->private_data;  in serial8250_probe()
827 		uart.port.type		= p->type;  in serial8250_probe()
828 		uart.port.serial_in	= p->serial_in;  in serial8250_probe()
829 		uart.port.serial_out	= p->serial_out;  in serial8250_probe()
830 		uart.port.handle_irq	= p->handle_irq;  in serial8250_probe()
831 		uart.port.handle_break	= p->handle_break;  in serial8250_probe()
832 		uart.port.set_termios	= p->set_termios;  in serial8250_probe()
833 		uart.port.set_ldisc	= p->set_ldisc;  in serial8250_probe()
834 		uart.port.get_mctrl	= p->get_mctrl;  in serial8250_probe()
835 		uart.port.pm		= p->pm;  in serial8250_probe()
836 		uart.port.dev		= &dev->dev;  in serial8250_probe()
837 		uart.port.irqflags	|= irqflag;  in serial8250_probe()
859 		if (up->port.dev == &dev->dev)  in serial8250_remove()
872 		if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)  in serial8250_suspend()
873 			uart_suspend_port(&serial8250_reg, &up->port);  in serial8250_suspend()
886 		if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)  in serial8250_resume()
916 static struct uart_8250_port *serial8250_find_match_or_unused(const struct uart_port *port)  in serial8250_find_match_or_unused()  argument
924 		if (uart_match_port(&serial8250_ports[i].port, port))  in serial8250_find_match_or_unused()
928 	i = port->line;  in serial8250_find_match_or_unused()
929 	if (i < nr_uarts && serial8250_ports[i].port.type == PORT_UNKNOWN &&  in serial8250_find_match_or_unused()
930 			serial8250_ports[i].port.iobase == 0)  in serial8250_find_match_or_unused()
938 		if (serial8250_ports[i].port.type == PORT_UNKNOWN &&  in serial8250_find_match_or_unused()
939 		    serial8250_ports[i].port.iobase == 0)  in serial8250_find_match_or_unused()
947 		if (serial8250_ports[i].port.type == PORT_UNKNOWN)  in serial8250_find_match_or_unused()
958 	struct uart_port *port = &up->port;  in serial_8250_overrun_backoff_work()  local
961 	spin_lock_irqsave(&port->lock, flags);  in serial_8250_overrun_backoff_work()
963 	up->port.read_status_mask |= UART_LSR_DR;  in serial_8250_overrun_backoff_work()
965 	spin_unlock_irqrestore(&port->lock, flags);  in serial_8250_overrun_backoff_work()
986 	if (up->port.uartclk == 0)  in serial8250_register_8250_port()
991 	uart = serial8250_find_match_or_unused(&up->port);  in serial8250_register_8250_port()
992 	if (uart && uart->port.type != PORT_8250_CIR) {  in serial8250_register_8250_port()
995 		if (uart->port.dev)  in serial8250_register_8250_port()
996 			uart_remove_one_port(&serial8250_reg, &uart->port);  in serial8250_register_8250_port()
998 		uart->port.iobase       = up->port.iobase;  in serial8250_register_8250_port()
999 		uart->port.membase      = up->port.membase;  in serial8250_register_8250_port()
1000 		uart->port.irq          = up->port.irq;  in serial8250_register_8250_port()
1001 		uart->port.irqflags     = up->port.irqflags;  in serial8250_register_8250_port()
1002 		uart->port.uartclk      = up->port.uartclk;  in serial8250_register_8250_port()
1003 		uart->port.fifosize     = up->port.fifosize;  in serial8250_register_8250_port()
1004 		uart->port.regshift     = up->port.regshift;  in serial8250_register_8250_port()
1005 		uart->port.iotype       = up->port.iotype;  in serial8250_register_8250_port()
1006 		uart->port.flags        = up->port.flags | UPF_BOOT_AUTOCONF;  in serial8250_register_8250_port()
1008 		uart->port.mapbase      = up->port.mapbase;  in serial8250_register_8250_port()
1009 		uart->port.mapsize      = up->port.mapsize;  in serial8250_register_8250_port()
1010 		uart->port.private_data = up->port.private_data;  in serial8250_register_8250_port()
1013 		uart->port.throttle	= up->port.throttle;  in serial8250_register_8250_port()
1014 		uart->port.unthrottle	= up->port.unthrottle;  in serial8250_register_8250_port()
1015 		uart->port.rs485_config	= up->port.rs485_config;  in serial8250_register_8250_port()
1016 		uart->port.rs485_supported = up->port.rs485_supported;  in serial8250_register_8250_port()
1017 		uart->port.rs485	= up->port.rs485;  in serial8250_register_8250_port()
1024 		if (uart->port.fifosize && !uart->tx_loadsz)  in serial8250_register_8250_port()
1025 			uart->tx_loadsz = uart->port.fifosize;  in serial8250_register_8250_port()
1027 		if (up->port.dev) {  in serial8250_register_8250_port()
1028 			uart->port.dev = up->port.dev;  in serial8250_register_8250_port()
1029 			ret = uart_get_rs485_mode(&uart->port);  in serial8250_register_8250_port()
1034 		if (up->port.flags & UPF_FIXED_TYPE)  in serial8250_register_8250_port()
1035 			uart->port.type = up->port.type;  in serial8250_register_8250_port()
1041 		if (!has_acpi_companion(uart->port.dev)) {  in serial8250_register_8250_port()
1042 			gpios = mctrl_gpio_init(&uart->port, 0);  in serial8250_register_8250_port()
1054 		if (up->port.serial_in)  in serial8250_register_8250_port()
1055 			uart->port.serial_in = up->port.serial_in;  in serial8250_register_8250_port()
1056 		if (up->port.serial_out)  in serial8250_register_8250_port()
1057 			uart->port.serial_out = up->port.serial_out;  in serial8250_register_8250_port()
1058 		if (up->port.handle_irq)  in serial8250_register_8250_port()
1059 			uart->port.handle_irq = up->port.handle_irq;  in serial8250_register_8250_port()
1061 		if (up->port.set_termios)  in serial8250_register_8250_port()
1062 			uart->port.set_termios = up->port.set_termios;  in serial8250_register_8250_port()
1063 		if (up->port.set_ldisc)  in serial8250_register_8250_port()
1064 			uart->port.set_ldisc = up->port.set_ldisc;  in serial8250_register_8250_port()
1065 		if (up->port.get_mctrl)  in serial8250_register_8250_port()
1066 			uart->port.get_mctrl = up->port.get_mctrl;  in serial8250_register_8250_port()
1067 		if (up->port.set_mctrl)  in serial8250_register_8250_port()
1068 			uart->port.set_mctrl = up->port.set_mctrl;  in serial8250_register_8250_port()
1069 		if (up->port.get_divisor)  in serial8250_register_8250_port()
1070 			uart->port.get_divisor = up->port.get_divisor;  in serial8250_register_8250_port()
1071 		if (up->port.set_divisor)  in serial8250_register_8250_port()
1072 			uart->port.set_divisor = up->port.set_divisor;  in serial8250_register_8250_port()
1073 		if (up->port.startup)  in serial8250_register_8250_port()
1074 			uart->port.startup = up->port.startup;  in serial8250_register_8250_port()
1075 		if (up->port.shutdown)  in serial8250_register_8250_port()
1076 			uart->port.shutdown = up->port.shutdown;  in serial8250_register_8250_port()
1077 		if (up->port.pm)  in serial8250_register_8250_port()
1078 			uart->port.pm = up->port.pm;  in serial8250_register_8250_port()
1079 		if (up->port.handle_break)  in serial8250_register_8250_port()
1080 			uart->port.handle_break = up->port.handle_break;  in serial8250_register_8250_port()
1086 		if (uart->port.type != PORT_8250_CIR) {  in serial8250_register_8250_port()
1088 				serial8250_isa_config(0, &uart->port,  in serial8250_register_8250_port()
1093 						&uart->port);  in serial8250_register_8250_port()
1097 			ret = uart->port.line;  in serial8250_register_8250_port()
1099 			dev_info(uart->port.dev,  in serial8250_register_8250_port()
1101 				uart->port.iobase,  in serial8250_register_8250_port()
1102 				(unsigned long long)uart->port.mapbase,  in serial8250_register_8250_port()
1103 				uart->port.irq);  in serial8250_register_8250_port()
1127 	uart->port.dev = NULL;  in serial8250_register_8250_port()
1149 		spin_lock_irqsave(&uart->port.lock, flags);  in serial8250_unregister_port()
1151 		spin_unlock_irqrestore(&uart->port.lock, flags);  in serial8250_unregister_port()
1154 	uart_remove_one_port(&serial8250_reg, &uart->port);  in serial8250_unregister_port()
1156 		uart->port.flags &= ~UPF_BOOT_AUTOCONF;  in serial8250_unregister_port()
1157 		uart->port.type = PORT_UNKNOWN;  in serial8250_unregister_port()
1158 		uart->port.dev = &serial8250_isa_devs->dev;  in serial8250_unregister_port()
1161 		uart_add_one_port(&serial8250_reg, &uart->port);  in serial8250_unregister_port()
1163 		uart->port.dev = NULL;  in serial8250_unregister_port()