Merge branch 'fixes' into for-linus

Conflicts:

	arch/arm/mach-versatile/core.c

14 files changed, 285 insertions, 2293 deletions

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 8058533f841..ec39203b879 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -44,6 +44,10 @@
 
 #include "8250.h"
 
+#ifdef CONFIG_SPARC
+#include "suncore.h"
+#endif
+
 /*
  * Configuration:
  *   share_irqs - whether we pass IRQF_SHARED to request_irq().  This option
@@ -53,6 +57,13 @@ static unsigned int share_irqs = SERIAL8250_SHARE_IRQS;
 
 static unsigned int nr_uarts = CONFIG_SERIAL_8250_RUNTIME_UARTS;
 
+static struct uart_driver serial8250_reg;
+
+static int serial_index(struct uart_port *port)
+{
+	return (serial8250_reg.minor - 64) + port->line;
+}
+
 /*
  * Debugging.
  */
@@ -536,7 +547,7 @@ static unsigned int serial_icr_read(struct uart_8250_port *up, int offset)
 /*
  * FIFO support.
  */
-static inline void serial8250_clear_fifos(struct uart_8250_port *p)
+static void serial8250_clear_fifos(struct uart_8250_port *p)
 {
 	if (p->capabilities & UART_CAP_FIFO) {
 		serial_outp(p, UART_FCR, UART_FCR_ENABLE_FIFO);
@@ -551,7 +562,7 @@ static inline void serial8250_clear_fifos(struct uart_8250_port *p)
  * capability" bit enabled.  Note that on XR16C850s, we need to
  * reset LCR to write to IER.
  */
-static inline void serial8250_set_sleep(struct uart_8250_port *p, int sleep)
+static void serial8250_set_sleep(struct uart_8250_port *p, int sleep)
 {
 	if (p->capabilities & UART_CAP_SLEEP) {
 		if (p->capabilities & UART_CAP_EFR) {
@@ -993,7 +1004,7 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
 		return;
 
 	DEBUG_AUTOCONF("ttyS%d: autoconf (0x%04x, 0x%p): ",
-			up->port.line, up->port.iobase, up->port.membase);
+		       serial_index(&up->port), up->port.iobase, up->port.membase);
 
 	/*
 	 * We really do need global IRQs disabled here - we're going to
@@ -1128,8 +1139,8 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
 	if (up->capabilities != uart_config[up->port.type].flags) {
 		printk(KERN_WARNING
 		       "ttyS%d: detected caps %08x should be %08x\n",
-			up->port.line, up->capabilities,
-			uart_config[up->port.type].flags);
+		       serial_index(&up->port), up->capabilities,
+		       uart_config[up->port.type].flags);
 	}
 
 	up->port.fifosize = uart_config[up->port.type].fifo_size;
@@ -1424,8 +1435,7 @@ static unsigned int check_modem_status(struct uart_8250_port *up)
 /*
  * This handles the interrupt from one port.
  */
-static inline void
-serial8250_handle_port(struct uart_8250_port *up)
+static void serial8250_handle_port(struct uart_8250_port *up)
 {
 	unsigned int status;
 	unsigned long flags;
@@ -1719,7 +1729,7 @@ static void serial8250_break_ctl(struct uart_port *port, int break_state)
 /*
  *	Wait for transmitter & holding register to empty
  */
-static inline void wait_for_xmitr(struct uart_8250_port *up, int bits)
+static void wait_for_xmitr(struct uart_8250_port *up, int bits)
 {
 	unsigned int status, tmout = 10000;
 
@@ -1854,7 +1864,8 @@ static int serial8250_startup(struct uart_port *port)
 	 */
 	if (!(up->port.flags & UPF_BUGGY_UART) &&
 	    (serial_inp(up, UART_LSR) == 0xff)) {
-		printk("ttyS%d: LSR safety check engaged!\n", up->port.line);
+		printk(KERN_INFO "ttyS%d: LSR safety check engaged!\n",
+		       serial_index(&up->port));
 		return -ENODEV;
 	}
 
@@ -1909,7 +1920,8 @@ static int serial8250_startup(struct uart_port *port)
 		 */
 		if (!(iir1 & UART_IIR_NO_INT) && (iir & UART_IIR_NO_INT)) {
 			up->bugs |= UART_BUG_THRE;
-			pr_debug("ttyS%d - using backup timer\n", port->line);
+			pr_debug("ttyS%d - using backup timer\n",
+				 serial_index(port));
 		}
 	}
 
@@ -1969,7 +1981,7 @@ static int serial8250_startup(struct uart_port *port)
 		if (!(up->bugs & UART_BUG_TXEN)) {
 			up->bugs |= UART_BUG_TXEN;
 			pr_debug("ttyS%d - enabling bad tx status workarounds\n",
-				 port->line);
+				 serial_index(port));
 		}
 	} else {
 		up->bugs &= ~UART_BUG_TXEN;
@@ -2637,7 +2649,6 @@ static int serial8250_console_early_setup(void)
 	return serial8250_find_port_for_earlycon();
 }
 
-static struct uart_driver serial8250_reg;
 static struct console serial8250_console = {
 	.name		= "ttyS",
 	.write		= serial8250_console_write,
@@ -2684,7 +2695,6 @@ static struct uart_driver serial8250_reg = {
 	.dev_name		= "ttyS",
 	.major			= TTY_MAJOR,
 	.minor			= 64,
-	.nr			= UART_NR,
 	.cons			= SERIAL8250_CONSOLE,
 };
 
@@ -2966,10 +2976,12 @@ static int __init serial8250_init(void)
 		"%d ports, IRQ sharing %sabled\n", nr_uarts,
 		share_irqs ? "en" : "dis");
 
-	for (i = 0; i < NR_IRQS; i++)
-		spin_lock_init(&irq_lists[i].lock);
-
+#ifdef CONFIG_SPARC
+	ret = sunserial_register_minors(&serial8250_reg, UART_NR);
+#else
+	serial8250_reg.nr = UART_NR;
 	ret = uart_register_driver(&serial8250_reg);
+#endif
 	if (ret)
 		goto out;
 
@@ -2994,7 +3006,11 @@ static int __init serial8250_init(void)
  put_dev:
 	platform_device_put(serial8250_isa_devs);
  unreg_uart_drv:
+#ifdef CONFIG_SPARC
+	sunserial_unregister_minors(&serial8250_reg, UART_NR);
+#else
 	uart_unregister_driver(&serial8250_reg);
+#endif
  out:
 	return ret;
 }
@@ -3013,7 +3029,11 @@ static void __exit serial8250_exit(void)
 	platform_driver_unregister(&serial8250_isa_driver);
 	platform_device_unregister(isa_dev);
 
+#ifdef CONFIG_SPARC
+	sunserial_unregister_minors(&serial8250_reg, UART_NR);
+#else
 	uart_unregister_driver(&serial8250_reg);
+#endif
 }
 
 module_init(serial8250_init);
diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index c2f23933155..c014ffb110e 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -2041,9 +2041,9 @@ static int pciserial_resume_one(struct pci_dev *dev)
 		 * The device may have been disabled.  Re-enable it.
 		 */
 		err = pci_enable_device(dev);
+		/* FIXME: We cannot simply error out here */
 		if (err)
-			return err;
-
+			printk(KERN_ERR "pciserial: Unable to re-enable ports, trying to continue.\n");
 		pciserial_resume_ports(priv);
 	}
 	return 0;
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 77cb34270fc..31786b3b0a6 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -9,7 +9,6 @@ menu "Serial drivers"
 # The new 8250/16550 serial drivers
 config SERIAL_8250
 	tristate "8250/16550 and compatible serial support"
-	depends on (BROKEN || !SPARC)
 	select SERIAL_CORE
 	---help---
 	  This selects whether you want to include the driver for the standard
@@ -994,24 +993,12 @@ config SERIAL_68328_RTS_CTS
 	bool "Support RTS/CTS on 68328 serial port"
 	depends on SERIAL_68328
 
-config SERIAL_COLDFIRE
-	bool "ColdFire serial support (DEPRECATED)"
-	depends on COLDFIRE
-	help
-	  This driver supports the built-in serial ports of the Motorola ColdFire
-	  family of CPUs.
-	  This driver is deprecated because it supports only the old interface
-	  for serial drivers and features like magic keys are not working.
-	  Please switch to the new style driver because this driver will be
-	  removed soon.
-
 config SERIAL_MCF
-	bool "Coldfire serial support (new style driver)"
+	bool "Coldfire serial support"
 	depends on COLDFIRE
 	select SERIAL_CORE
 	help
-	  This new serial driver supports the Freescale Coldfire serial ports
-	  using the new serial driver subsystem.
+	  This serial driver supports the Freescale Coldfire serial ports.
 
 config SERIAL_MCF_BAUDRATE
 	int "Default baudrate for Coldfire serial ports"
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 7e7383e890d..0c17c8ddb19 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -4,6 +4,16 @@
 
 obj-$(CONFIG_SERIAL_CORE) += serial_core.o
 obj-$(CONFIG_SERIAL_21285) += 21285.o
+
+# These Sparc drivers have to appear before others such as 8250
+# which share ttySx minor node space.  Otherwise console device
+# names change and other unplesantries.
+obj-$(CONFIG_SERIAL_SUNCORE) += suncore.o
+obj-$(CONFIG_SERIAL_SUNHV) += sunhv.o
+obj-$(CONFIG_SERIAL_SUNZILOG) += sunzilog.o
+obj-$(CONFIG_SERIAL_SUNSU) += sunsu.o
+obj-$(CONFIG_SERIAL_SUNSAB) += sunsab.o
+
 obj-$(CONFIG_SERIAL_8250) += 8250.o
 obj-$(CONFIG_SERIAL_8250_PNP) += 8250_pnp.o
 obj-$(CONFIG_SERIAL_8250_GSC) += 8250_gsc.o
@@ -31,16 +41,10 @@ obj-$(CONFIG_SERIAL_S3C2400) += s3c2400.o
 obj-$(CONFIG_SERIAL_S3C2410) += s3c2410.o
 obj-$(CONFIG_SERIAL_S3C2412) += s3c2412.o
 obj-$(CONFIG_SERIAL_S3C2440) += s3c2440.o
-obj-$(CONFIG_SERIAL_SUNCORE) += suncore.o
-obj-$(CONFIG_SERIAL_SUNHV) += sunhv.o
-obj-$(CONFIG_SERIAL_SUNZILOG) += sunzilog.o
 obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
-obj-$(CONFIG_SERIAL_SUNSU) += sunsu.o
-obj-$(CONFIG_SERIAL_SUNSAB) += sunsab.o
 obj-$(CONFIG_SERIAL_MUX) += mux.o
 obj-$(CONFIG_SERIAL_68328) += 68328serial.o
 obj-$(CONFIG_SERIAL_68360) += 68360serial.o
-obj-$(CONFIG_SERIAL_COLDFIRE) += mcfserial.o
 obj-$(CONFIG_SERIAL_MCF) += mcf.o
 obj-$(CONFIG_SERIAL_PMACZILOG) += pmac_zilog.o
 obj-$(CONFIG_SERIAL_LH7A40X) += serial_lh7a40x.o
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 4a0d30bed9f..569f0e2476c 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -1,7 +1,7 @@
 /*
  * Blackfin On-Chip Serial Driver
  *
- * Copyright 2006-2007 Analog Devices Inc.
+ * Copyright 2006-2008 Analog Devices Inc.
  *
  * Enter bugs at http://blackfin.uclinux.org/
  *
@@ -42,6 +42,9 @@
 #define BFIN_SERIAL_MAJOR	204
 #define BFIN_SERIAL_MINOR	64
 
+static struct bfin_serial_port bfin_serial_ports[BFIN_UART_NR_PORTS];
+static int nr_active_ports = ARRAY_SIZE(bfin_serial_resource);
+
 /*
  * Setup for console. Argument comes from the menuconfig
  */
@@ -126,13 +129,13 @@ static int kgdb_entry_state;
 void kgdb_put_debug_char(int chr)
 {
 	struct bfin_serial_port *uart;
-	
+
 	if (CONFIG_KGDB_UART_PORT < 0
 		|| CONFIG_KGDB_UART_PORT >= BFIN_UART_NR_PORTS)
 		uart = &bfin_serial_ports[0];
 	else
 		uart = &bfin_serial_ports[CONFIG_KGDB_UART_PORT];
-	
+
 	while (!(UART_GET_LSR(uart) & THRE)) {
 		SSYNC();
 	}
@@ -152,7 +155,7 @@ int kgdb_get_debug_char(void)
 		uart = &bfin_serial_ports[0];
 	else
 		uart = &bfin_serial_ports[CONFIG_KGDB_UART_PORT];
-	
+
 	while(!(UART_GET_LSR(uart) & DR)) {
 		SSYNC();
 	}
@@ -298,7 +301,11 @@ static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
 	bfin_serial_mctrl_check(uart);
 
 	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
-		bfin_serial_stop_tx(&uart->port);
+#ifdef CONFIG_BF54x
+		/* Clear TFI bit */
+		UART_PUT_LSR(uart, TFI);
+#endif
+		UART_CLEAR_IER(uart, ETBEI);
 		return;
 	}
 
@@ -317,9 +324,6 @@ static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 		uart_write_wakeup(&uart->port);
-
-	if (uart_circ_empty(xmit))
-		bfin_serial_stop_tx(&uart->port);
 }
 
 static irqreturn_t bfin_serial_rx_int(int irq, void *dev_id)
@@ -645,6 +649,42 @@ static int bfin_serial_startup(struct uart_port *port)
 		free_irq(uart->port.irq, uart);
 		return -EBUSY;
 	}
+
+# ifdef CONFIG_BF54x
+	{
+		unsigned uart_dma_ch_rx, uart_dma_ch_tx;
+
+		switch (uart->port.irq) {
+		case IRQ_UART3_RX:
+			uart_dma_ch_rx = CH_UART3_RX;
+			uart_dma_ch_tx = CH_UART3_TX;
+			break;
+		case IRQ_UART2_RX:
+			uart_dma_ch_rx = CH_UART2_RX;
+			uart_dma_ch_tx = CH_UART2_TX;
+			break;
+		default:
+			uart_dma_ch_rx = uart_dma_ch_tx = 0;
+			break;
+		};
+
+		if (uart_dma_ch_rx &&
+			request_dma(uart_dma_ch_rx, "BFIN_UART_RX") < 0) {
+			printk(KERN_NOTICE"Fail to attach UART interrupt\n");
+			free_irq(uart->port.irq, uart);
+			free_irq(uart->port.irq + 1, uart);
+			return -EBUSY;
+		}
+		if (uart_dma_ch_tx &&
+			request_dma(uart_dma_ch_tx, "BFIN_UART_TX") < 0) {
+			printk(KERN_NOTICE "Fail to attach UART interrupt\n");
+			free_dma(uart_dma_ch_rx);
+			free_irq(uart->port.irq, uart);
+			free_irq(uart->port.irq + 1, uart);
+			return -EBUSY;
+		}
+	}
+# endif
 #endif
 	UART_SET_IER(uart, ERBFI);
 	return 0;
@@ -662,6 +702,20 @@ static void bfin_serial_shutdown(struct uart_port *port)
 	del_timer(&(uart->rx_dma_timer));
 	dma_free_coherent(NULL, PAGE_SIZE, uart->rx_dma_buf.buf, 0);
 #else
+#ifdef CONFIG_BF54x
+	switch (uart->port.irq) {
+	case IRQ_UART3_RX:
+		free_dma(CH_UART3_RX);
+		free_dma(CH_UART3_TX);
+		break;
+	case IRQ_UART2_RX:
+		free_dma(CH_UART2_RX);
+		free_dma(CH_UART2_TX);
+		break;
+	default:
+		break;
+	};
+#endif
 #ifdef	CONFIG_KGDB_UART
 	if (uart->port.line != CONFIG_KGDB_UART_PORT)
 #endif
@@ -757,6 +811,9 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
 	val |= UCEN;
 	UART_PUT_GCTL(uart, val);
 
+	/* Port speed changed, update the per-port timeout. */
+	uart_update_timeout(port, termios->c_cflag, baud);
+
 	spin_unlock_irqrestore(&uart->port.lock, flags);
 }
 
@@ -859,8 +916,9 @@ static void __init bfin_serial_init_ports(void)
 		return;
 	first = 0;
 
-	for (i = 0; i < nr_ports; i++) {
+	for (i = 0; i < nr_active_ports; i++) {
 		bfin_serial_ports[i].port.uartclk   = get_sclk();
+		bfin_serial_ports[i].port.fifosize  = BFIN_UART_TX_FIFO_SIZE;
 		bfin_serial_ports[i].port.ops       = &bfin_serial_pops;
 		bfin_serial_ports[i].port.line      = i;
 		bfin_serial_ports[i].port.iotype    = UPIO_MEM;
@@ -961,7 +1019,7 @@ bfin_serial_console_setup(struct console *co, char *options)
 	 * if so, search for the first available port that does have
 	 * console support.
 	 */
-	if (co->index == -1 || co->index >= nr_ports)
+	if (co->index == -1 || co->index >= nr_active_ports)
 		co->index = 0;
 	uart = &bfin_serial_ports[co->index];
 
@@ -1056,7 +1114,7 @@ static __init void early_serial_write(struct console *con, const char *s,
 	}
 }
 
-static struct __init console bfin_early_serial_console = {
+static struct __initdata console bfin_early_serial_console = {
 	.name = "early_BFuart",
 	.write = early_serial_write,
 	.device = uart_console_device,
@@ -1072,7 +1130,7 @@ struct console __init *bfin_earlyserial_init(unsigned int port,
 	struct bfin_serial_port *uart;
 	struct ktermios t;
 
-	if (port == -1 || port >= nr_ports)
+	if (port == -1 || port >= nr_active_ports)
 		port = 0;
 	bfin_serial_init_ports();
 	bfin_early_serial_console.index = port;
@@ -1100,20 +1158,26 @@ static struct uart_driver bfin_serial_reg = {
 
 static int bfin_serial_suspend(struct platform_device *dev, pm_message_t state)
 {
-	struct bfin_serial_port *uart = platform_get_drvdata(dev);
+	int i;
 
-	if (uart)
-		uart_suspend_port(&bfin_serial_reg, &uart->port);
+	for (i = 0; i < nr_active_ports; i++) {
+		if (bfin_serial_ports[i].port.dev != &dev->dev)
+			continue;
+		uart_suspend_port(&bfin_serial_reg, &bfin_serial_ports[i].port);
+	}
 
 	return 0;
 }
 
 static int bfin_serial_resume(struct platform_device *dev)
 {
-	struct bfin_serial_port *uart = platform_get_drvdata(dev);
+	int i;
 
-	if (uart)
-		uart_resume_port(&bfin_serial_reg, &uart->port);
+	for (i = 0; i < nr_active_ports; i++) {
+		if (bfin_serial_ports[i].port.dev != &dev->dev)
+			continue;
+		uart_resume_port(&bfin_serial_reg, &bfin_serial_ports[i].port);
+	}
 
 	return 0;
 }
@@ -1128,32 +1192,31 @@ static int bfin_serial_probe(struct platform_device *dev)
 			break;
 
 	if (i < dev->num_resources) {
-		for (i = 0; i < nr_ports; i++, res++) {
+		for (i = 0; i < nr_active_ports; i++, res++) {
 			if (bfin_serial_ports[i].port.mapbase != res->start)
 				continue;
 			bfin_serial_ports[i].port.dev = &dev->dev;
 			uart_add_one_port(&bfin_serial_reg, &bfin_serial_ports[i].port);
-			platform_set_drvdata(dev, &bfin_serial_ports[i]);
 		}
 	}
 
 	return 0;
 }
 
-static int bfin_serial_remove(struct platform_device *pdev)
+static int bfin_serial_remove(struct platform_device *dev)
 {
-	struct bfin_serial_port *uart = platform_get_drvdata(pdev);
-
+	int i;
 
+	for (i = 0; i < nr_active_ports; i++) {
+		if (bfin_serial_ports[i].port.dev != &dev->dev)
+			continue;
+		uart_remove_one_port(&bfin_serial_reg, &bfin_serial_ports[i].port);
+		bfin_serial_ports[i].port.dev = NULL;
 #ifdef CONFIG_SERIAL_BFIN_CTSRTS
-	gpio_free(uart->cts_pin);
-	gpio_free(uart->rts_pin);
+		gpio_free(bfin_serial_ports[i].cts_pin);
+		gpio_free(bfin_serial_ports[i].rts_pin);
 #endif
-
-	platform_set_drvdata(pdev, NULL);
-
-	if (uart)
-		uart_remove_one_port(&bfin_serial_reg, &uart->port);
+	}
 
 	return 0;
 }
diff --git a/drivers/serial/crisv10.c b/drivers/serial/crisv10.c
index bf94a770bb4..211c21797ce 100644
--- a/drivers/serial/crisv10.c
+++ b/drivers/serial/crisv10.c
@@ -457,7 +457,6 @@ static struct e100_serial rs_table[] = {
 #define NR_PORTS (sizeof(rs_table)/sizeof(struct e100_serial))
 
 static struct ktermios *serial_termios[NR_PORTS];
-static struct ktermios *serial_termios_locked[NR_PORTS];
 #ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
 static struct fast_timer fast_timers[NR_PORTS];
 #endif
@@ -4419,6 +4418,7 @@ rs_init(void)
 			rs485_pa_bit)) {
 		printk(KERN_CRIT "ETRAX100LX serial: Could not allocate "
 			"RS485 pin\n");
+		put_tty_driver(driver);
 		return -EBUSY;
 	}
 #endif
@@ -4427,6 +4427,7 @@ rs_init(void)
 			rs485_port_g_bit)) {
 		printk(KERN_CRIT "ETRAX100LX serial: Could not allocate "
 			"RS485 pin\n");
+		put_tty_driver(driver);
 		return -EBUSY;
 	}
 #endif
@@ -4446,8 +4447,6 @@ rs_init(void)
 	driver->init_termios.c_ispeed = 115200;
 	driver->init_termios.c_ospeed = 115200;
 	driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
-	driver->termios = serial_termios;
-	driver->termios_locked = serial_termios_locked;
 
 	tty_set_operations(driver, &rs_ops);
         serial_driver = driver;
diff --git a/drivers/serial/mcfserial.c b/drivers/serial/mcfserial.c
deleted file mode 100644
index fbe3835f6b7..00000000000
--- a/drivers/serial/mcfserial.c
+++ /dev/null
@@ -1,1965 +0,0 @@
-#warning This driver is deprecated. Check Kconfig for details.
-/*
- * mcfserial.c -- serial driver for ColdFire internal UARTS.
- *
- * Copyright (C) 1999-2003 Greg Ungerer <gerg@snapgear.com>
- * Copyright (c) 2000-2001 Lineo, Inc. <www.lineo.com> 
- * Copyright (C) 2001-2002 SnapGear Inc. <www.snapgear.com> 
- *
- * Based on code from 68332serial.c which was:
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1998 TSHG
- * Copyright (c) 1999 Rt-Control Inc. <jeff@uclinux.org>
- *
- * Changes:
- * 08/07/2003    Daniele Bellucci <bellucda@tiscali.it>
- *               some cleanups in mcfrs_write.
- *
- */
- 
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/wait.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/serial.h>
-#include <linux/serialP.h>
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <linux/delay.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/system.h>
-#include <asm/delay.h>
-#include <asm/coldfire.h>
-#include <asm/mcfsim.h>
-#include <asm/mcfuart.h>
-#include <asm/nettel.h>
-#include <asm/uaccess.h>
-#include "mcfserial.h"
-
-struct timer_list mcfrs_timer_struct;
-
-/*
- *	Default console baud rate,  we use this as the default
- *	for all ports so init can just open /dev/console and
- *	keep going.  Perhaps one day the cflag settings for the
- *	console can be used instead.
- */
-#if defined(CONFIG_HW_FEITH)
-#define	CONSOLE_BAUD_RATE	38400
-#define	DEFAULT_CBAUD		B38400
-#elif defined(CONFIG_MOD5272) || defined(CONFIG_M5208EVB) || \
-      defined(CONFIG_M5329EVB) || defined(CONFIG_GILBARCO)
-#define CONSOLE_BAUD_RATE 	115200
-#define DEFAULT_CBAUD		B115200
-#elif defined(CONFIG_ARNEWSH) || defined(CONFIG_FREESCALE) || \
-      defined(CONFIG_senTec) || defined(CONFIG_SNEHA) || defined(CONFIG_AVNET)
-#define	CONSOLE_BAUD_RATE	19200
-#define	DEFAULT_CBAUD		B19200
-#endif
-
-#ifndef CONSOLE_BAUD_RATE
-#define	CONSOLE_BAUD_RATE	9600
-#define	DEFAULT_CBAUD		B9600
-#endif
-
-int mcfrs_console_inited = 0;
-int mcfrs_console_port = -1;
-int mcfrs_console_baud = CONSOLE_BAUD_RATE;
-int mcfrs_console_cbaud = DEFAULT_CBAUD;
-
-/*
- *	Driver data structures.
- */
-static struct tty_driver *mcfrs_serial_driver;
-
-/* number of characters left in xmit buffer before we ask for more */
-#define WAKEUP_CHARS 256
-
-/* Debugging...
- */
-#undef SERIAL_DEBUG_OPEN
-#undef SERIAL_DEBUG_FLOW
-
-#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
-    defined(CONFIG_M520x) || defined(CONFIG_M532x)
-#define	IRQBASE	(MCFINT_VECBASE+MCFINT_UART0)
-#else
-#define	IRQBASE	73
-#endif
-
-/*
- *	Configuration table, UARTs to look for at startup.
- */
-static struct mcf_serial mcfrs_table[] = {
-	{  /* ttyS0 */
-		.magic = 0,
-		.addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE1),
-		.irq = IRQBASE,
-		.flags = ASYNC_BOOT_AUTOCONF,
-	},
-#ifdef MCFUART_BASE2
-	{  /* ttyS1 */
-		.magic = 0,
-		.addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE2),
-		.irq = IRQBASE+1,
-		.flags = ASYNC_BOOT_AUTOCONF,
-	},
-#endif
-#ifdef MCFUART_BASE3
-	{  /* ttyS2 */
-		.magic = 0,
-		.addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE3),
-		.irq = IRQBASE+2,
-		.flags = ASYNC_BOOT_AUTOCONF,
-	},
-#endif
-#ifdef MCFUART_BASE4
-	{  /* ttyS3 */
-		.magic = 0,
-		.addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE4),
-		.irq = IRQBASE+3,
-		.flags = ASYNC_BOOT_AUTOCONF,
-	},
-#endif
-};
-
-
-#define	NR_PORTS	(sizeof(mcfrs_table) / sizeof(struct mcf_serial))
-
-/*
- * This is used to figure out the divisor speeds and the timeouts.
- */
-static int mcfrs_baud_table[] = {
-	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
-	9600, 19200, 38400, 57600, 115200, 230400, 460800, 0
-};
-#define MCFRS_BAUD_TABLE_SIZE \
-			(sizeof(mcfrs_baud_table)/sizeof(mcfrs_baud_table[0]))
-
-
-#ifdef CONFIG_MAGIC_SYSRQ
-/*
- *	Magic system request keys. Used for debugging...
- */
-extern int	magic_sysrq_key(int ch);
-#endif
-
-
-/*
- *	Forware declarations...
- */
-static void	mcfrs_change_speed(struct mcf_serial *info);
-static void	mcfrs_wait_until_sent(struct tty_struct *tty, int timeout);
-
-
-static inline int serial_paranoia_check(struct mcf_serial *info,
-					char *name, const char *routine)
-{
-#ifdef SERIAL_PARANOIA_CHECK
-	static const char badmagic[] =
-		"MCFRS(warning): bad magic number for serial struct %s in %s\n";
-	static const char badinfo[] =
-		"MCFRS(warning): null mcf_serial for %s in %s\n";
-
-	if (!info) {
-		printk(badinfo, name, routine);
-		return 1;
-	}
-	if (info->magic != SERIAL_MAGIC) {
-		printk(badmagic, name, routine);
-		return 1;
-	}
-#endif
-	return 0;
-}
-
-/*
- *	Sets or clears DTR and RTS on the requested line.
- */
-static void mcfrs_setsignals(struct mcf_serial *info, int dtr, int rts)
-{
-	volatile unsigned char	*uartp;
-	unsigned long		flags;
-	
-#if 0
-	printk("%s(%d): mcfrs_setsignals(info=%x,dtr=%d,rts=%d)\n",
-		__FILE__, __LINE__, info, dtr, rts);
-#endif
-
-	local_irq_save(flags);
-	if (dtr >= 0) {
-#ifdef MCFPP_DTR0
-		if (info->line)
-			mcf_setppdata(MCFPP_DTR1, (dtr ? 0 : MCFPP_DTR1));
-		else
-			mcf_setppdata(MCFPP_DTR0, (dtr ? 0 : MCFPP_DTR0));
-#endif
-	}
-	if (rts >= 0) {
-		uartp = info->addr;
-		if (rts) {
-			info->sigs |= TIOCM_RTS;
-			uartp[MCFUART_UOP1] = MCFUART_UOP_RTS;
-		} else {
-			info->sigs &= ~TIOCM_RTS;
-			uartp[MCFUART_UOP0] = MCFUART_UOP_RTS;
-		}
-	}
-	local_irq_restore(flags);
-	return;
-}
-
-/*
- *	Gets values of serial signals.
- */
-static int mcfrs_getsignals(struct mcf_serial *info)
-{
-	volatile unsigned char	*uartp;
-	unsigned long		flags;
-	int			sigs;
-#if defined(CONFIG_NETtel) && defined(CONFIG_M5307)
-	unsigned short		ppdata;
-#endif
-
-#if 0
-	printk("%s(%d): mcfrs_getsignals(info=%x)\n", __FILE__, __LINE__);
-#endif
-
-	local_irq_save(flags);
-	uartp = info->addr;
-	sigs = (uartp[MCFUART_UIPR] & MCFUART_UIPR_CTS) ? 0 : TIOCM_CTS;
-	sigs |= (info->sigs & TIOCM_RTS);
-
-#ifdef MCFPP_DCD0
-{
-	unsigned int ppdata;
-	ppdata = mcf_getppdata();
-	if (info->line == 0) {
-		sigs |= (ppdata & MCFPP_DCD0) ? 0 : TIOCM_CD;
-		sigs |= (ppdata & MCFPP_DTR0) ? 0 : TIOCM_DTR;
-	} else if (info->line == 1) {
-		sigs |= (ppdata & MCFPP_DCD1) ? 0 : TIOCM_CD;
-		sigs |= (ppdata & MCFPP_DTR1) ? 0 : TIOCM_DTR;
-	}
-}
-#endif
-
-	local_irq_restore(flags);
-	return(sigs);
-}
-
-/*
- * ------------------------------------------------------------
- * mcfrs_stop() and mcfrs_start()
- *
- * This routines are called before setting or resetting tty->stopped.
- * They enable or disable transmitter interrupts, as necessary.
- * ------------------------------------------------------------
- */
-static void mcfrs_stop(struct tty_struct *tty)
-{
-	volatile unsigned char	*uartp;
-	struct mcf_serial	*info = (struct mcf_serial *)tty->driver_data;
-	unsigned long		flags;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_stop"))
-		return;
-	
-	local_irq_save(flags);
-	uartp = info->addr;
-	info->imr &= ~MCFUART_UIR_TXREADY;
-	uartp[MCFUART_UIMR] = info->imr;
-	local_irq_restore(flags);
-}
-
-static void mcfrs_start(struct tty_struct *tty)
-{
-	volatile unsigned char	*uartp;
-	struct mcf_serial	*info = (struct mcf_serial *)tty->driver_data;
-	unsigned long		flags;
-	
-	if (serial_paranoia_check(info, tty->name, "mcfrs_start"))
-		return;
-
-	local_irq_save(flags);
-	if (info->xmit_cnt && info->xmit_buf) {
-		uartp = info->addr;
-		info->imr |= MCFUART_UIR_TXREADY;
-		uartp[MCFUART_UIMR] = info->imr;
-	}
-	local_irq_restore(flags);
-}
-
-/*
- * ----------------------------------------------------------------------
- *
- * Here starts the interrupt handling routines.  All of the following
- * subroutines are declared as inline and are folded into
- * mcfrs_interrupt().  They were separated out for readability's sake.
- *
- * Note: mcfrs_interrupt() is a "fast" interrupt, which means that it
- * runs with interrupts turned off.  People who may want to modify
- * mcfrs_interrupt() should try to keep the interrupt handler as fast as
- * possible.  After you are done making modifications, it is not a bad
- * idea to do:
- * 
- * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c
- *
- * and look at the resulting assemble code in serial.s.
- *
- * 				- Ted Ts'o (tytso@mit.edu), 7-Mar-93
- * -----------------------------------------------------------------------
- */
-
-static inline void receive_chars(struct mcf_serial *info)
-{
-	volatile unsigned char	*uartp;
-	struct tty_struct	*tty = info->port.tty;
-	unsigned char		status, ch, flag;
-
-	if (!tty)
-		return;
-
-	uartp = info->addr;
-
-	while ((status = uartp[MCFUART_USR]) & MCFUART_USR_RXREADY) {
-		ch = uartp[MCFUART_URB];
-		info->stats.rx++;
-
-#ifdef CONFIG_MAGIC_SYSRQ
-		if (mcfrs_console_inited && (info->line == mcfrs_console_port)) {
-			if (magic_sysrq_key(ch))
-				continue;
-		}
-#endif
-
-		flag = TTY_NORMAL;
-		if (status & MCFUART_USR_RXERR) {
-			uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETERR;
-			if (status & MCFUART_USR_RXBREAK) {
-				info->stats.rxbreak++;
-				flag = TTY_BREAK;
-			} else if (status & MCFUART_USR_RXPARITY) {
-				info->stats.rxparity++;
-				flag = TTY_PARITY;
-			} else if (status & MCFUART_USR_RXOVERRUN) {
-				info->stats.rxoverrun++;
-				flag = TTY_OVERRUN;
-			} else if (status & MCFUART_USR_RXFRAMING) {
-				info->stats.rxframing++;
-				flag = TTY_FRAME;
-			}
-		}
-		tty_insert_flip_char(tty, ch, flag);
-	}
-	tty_schedule_flip(tty);
-	return;
-}
-
-static inline void transmit_chars(struct mcf_serial *info)
-{
-	volatile unsigned char	*uartp;
-
-	uartp = info->addr;
-
-	if (info->x_char) {
-		/* Send special char - probably flow control */
-		uartp[MCFUART_UTB] = info->x_char;
-		info->x_char = 0;
-		info->stats.tx++;
-	}
-
-	if ((info->xmit_cnt <= 0) || info->port.tty->stopped) {
-		info->imr &= ~MCFUART_UIR_TXREADY;
-		uartp[MCFUART_UIMR] = info->imr;
-		return;
-	}
-
-	while (uartp[MCFUART_USR] & MCFUART_USR_TXREADY) {
-		uartp[MCFUART_UTB] = info->xmit_buf[info->xmit_tail++];
-		info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
-		info->stats.tx++;
-		if (--info->xmit_cnt <= 0)
-			break;
-	}
-
-	if (info->xmit_cnt < WAKEUP_CHARS)
-		schedule_work(&info->tqueue);
-	return;
-}
-
-/*
- * This is the serial driver's generic interrupt routine
- */
-irqreturn_t mcfrs_interrupt(int irq, void *dev_id)
-{
-	struct mcf_serial	*info;
-	unsigned char		isr;
-
-	info = &mcfrs_table[(irq - IRQBASE)];
-	isr = info->addr[MCFUART_UISR] & info->imr;
-
-	if (isr & MCFUART_UIR_RXREADY)
-		receive_chars(info);
-	if (isr & MCFUART_UIR_TXREADY)
-		transmit_chars(info);
-	return IRQ_HANDLED;
-}
-
-/*
- * -------------------------------------------------------------------
- * Here ends the serial interrupt routines.
- * -------------------------------------------------------------------
- */
-
-static void mcfrs_offintr(struct work_struct *work)
-{
-	struct mcf_serial *info = container_of(work, struct mcf_serial, tqueue);
-	struct tty_struct *tty = info->port.tty;
-	
-	if (tty)
-		tty_wakeup(tty);
-}
-
-
-/*
- *	Change of state on a DCD line.
- */
-void mcfrs_modem_change(struct mcf_serial *info, int dcd)