tty: move obsolete and broken tty drivers to drivers/staging/tty/

As planned by Arnd Bergmann, this moves the following drivers to the
drivers/staging/tty/ directory where they will be removed after 2.6.41
if no one steps up to claim them.
	epca
	epca
	ip2
	istallion
	riscom8
	serial167
	specialix
	stallion

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 2489 deletions

diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
deleted file mode 100644
index 674af6933978..000000000000
--- a/drivers/char/serial167.c
+++ /dev/null
@@ -1,2489 +0,0 @@
-/*
- * linux/drivers/char/serial167.c
- *
- * Driver for MVME166/7 board serial ports, which are via a CD2401.
- * Based very much on cyclades.c.
- *
- * MVME166/7 work by Richard Hirst [richard@sleepie.demon.co.uk]
- *
- * ==============================================================
- *
- * static char rcsid[] =
- * "$Revision: 1.36.1.4 $$Date: 1995/03/29 06:14:14 $";
- *
- *  linux/kernel/cyclades.c
- *
- * Maintained by Marcio Saito (cyclades@netcom.com) and
- * Randolph Bentson (bentson@grieg.seaslug.org)
- *
- * Much of the design and some of the code came from serial.c
- * which was copyright (C) 1991, 1992  Linus Torvalds.  It was
- * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92,
- * and then fixed as suggested by Michael K. Johnson 12/12/92.
- *
- * This version does not support shared irq's.
- *
- * $Log: cyclades.c,v $
- * Revision 1.36.1.4  1995/03/29  06:14:14  bentson
- * disambiguate between Cyclom-16Y and Cyclom-32Ye;
- *
- * Changes:
- *
- * 200 lines of changes record removed - RGH 11-10-95, starting work on
- * converting this to drive serial ports on mvme166 (cd2401).
- *
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 2000/08/25
- * - get rid of verify_area
- * - use get_user to access memory from userspace in set_threshold,
- *   set_default_threshold and set_timeout
- * - don't use the panic function in serial167_init
- * - do resource release on failure on serial167_init
- * - include missing restore_flags in mvme167_serial_console_setup
- *
- * Kars de Jong <jongk@linux-m68k.org> - 2004/09/06
- * - replace bottom half handler with task queue handler
- */
-
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/tty.h>
-#include <linux/interrupt.h>
-#include <linux/serial.h>
-#include <linux/serialP.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/ptrace.h>
-#include <linux/serial167.h>
-#include <linux/delay.h>
-#include <linux/major.h>
-#include <linux/mm.h>
-#include <linux/console.h>
-#include <linux/module.h>
-#include <linux/bitops.h>
-#include <linux/tty_flip.h>
-#include <linux/gfp.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/mvme16xhw.h>
-#include <asm/bootinfo.h>
-#include <asm/setup.h>
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <asm/uaccess.h>
-#include <linux/init.h>
-
-#define SERIAL_PARANOIA_CHECK
-#undef  SERIAL_DEBUG_OPEN
-#undef  SERIAL_DEBUG_THROTTLE
-#undef  SERIAL_DEBUG_OTHER
-#undef  SERIAL_DEBUG_IO
-#undef  SERIAL_DEBUG_COUNT
-#undef  SERIAL_DEBUG_DTR
-#undef  CYCLOM_16Y_HACK
-#define  CYCLOM_ENABLE_MONITORING
-
-#define WAKEUP_CHARS 256
-
-#define STD_COM_FLAGS (0)
-
-static struct tty_driver *cy_serial_driver;
-extern int serial_console;
-static struct cyclades_port *serial_console_info = NULL;
-static unsigned int serial_console_cflag = 0;
-u_char initial_console_speed;
-
-/* Base address of cd2401 chip on mvme166/7 */
-
-#define BASE_ADDR (0xfff45000)
-#define pcc2chip	((volatile u_char *)0xfff42000)
-#define PccSCCMICR	0x1d
-#define PccSCCTICR	0x1e
-#define PccSCCRICR	0x1f
-#define PccTPIACKR	0x25
-#define PccRPIACKR	0x27
-#define PccIMLR		0x3f
-
-/* This is the per-port data structure */
-struct cyclades_port cy_port[] = {
-	/* CARD#  */
-	{-1},			/* ttyS0 */
-	{-1},			/* ttyS1 */
-	{-1},			/* ttyS2 */
-	{-1},			/* ttyS3 */
-};
-
-#define NR_PORTS        ARRAY_SIZE(cy_port)
-
-/*
- * This is used to look up the divisor speeds and the timeouts
- * We're normally limited to 15 distinct baud rates.  The extra
- * are accessed via settings in info->flags.
- *         0,     1,     2,     3,     4,     5,     6,     7,     8,     9,
- *        10,    11,    12,    13,    14,    15,    16,    17,    18,    19,
- *                                                  HI            VHI
- */
-static int baud_table[] = {
-	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
-	1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000,
-	0
-};
-
-#if 0
-static char baud_co[] = {	/* 25 MHz clock option table */
-	/* value =>    00    01   02    03    04 */
-	/* divide by    8    32   128   512  2048 */
-	0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
-	0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-};
-
-static char baud_bpr[] = {	/* 25 MHz baud rate period table */
-	0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
-	0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15
-};
-#endif
-
-/* I think 166 brd clocks 2401 at 20MHz.... */
-
-/* These values are written directly to tcor, and >> 5 for writing to rcor */
-static u_char baud_co[] = {	/* 20 MHz clock option table */
-	0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x60, 0x60, 0x40,
-	0x40, 0x40, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-};
-
-/* These values written directly to tbpr/rbpr */
-static u_char baud_bpr[] = {	/* 20 MHz baud rate period table */
-	0x00, 0xc0, 0x80, 0x58, 0x6c, 0x40, 0xc0, 0x81, 0x40, 0x81,
-	0x57, 0x40, 0x81, 0x40, 0x81, 0x40, 0x2b, 0x20, 0x15, 0x10
-};
-
-static u_char baud_cor4[] = {	/* receive threshold */
-	0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
-	0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07
-};
-
-static void shutdown(struct cyclades_port *);
-static int startup(struct cyclades_port *);
-static void cy_throttle(struct tty_struct *);
-static void cy_unthrottle(struct tty_struct *);
-static void config_setup(struct cyclades_port *);
-#ifdef CYCLOM_SHOW_STATUS
-static void show_status(int);
-#endif
-
-/*
- * I have my own version of udelay(), as it is needed when initialising
- * the chip, before the delay loop has been calibrated.  Should probably
- * reference one of the vmechip2 or pccchip2 counter for an accurate
- * delay, but this wild guess will do for now.
- */
-
-void my_udelay(long us)
-{
-	u_char x;
-	volatile u_char *p = &x;
-	int i;
-
-	while (us--)
-		for (i = 100; i; i--)
-			x |= *p;
-}
-
-static inline int serial_paranoia_check(struct cyclades_port *info, char *name,
-		const char *routine)
-{
-#ifdef SERIAL_PARANOIA_CHECK
-	if (!info) {
-		printk("Warning: null cyclades_port for (%s) in %s\n", name,
-				routine);
-		return 1;
-	}
-
-	if (info < &cy_port[0] || info >= &cy_port[NR_PORTS]) {
-		printk("Warning: cyclades_port out of range for (%s) in %s\n",
-				name, routine);
-		return 1;
-	}
-
-	if (info->magic != CYCLADES_MAGIC) {
-		printk("Warning: bad magic number for serial struct (%s) in "
-				"%s\n", name, routine);
-		return 1;
-	}
-#endif
-	return 0;
-}				/* serial_paranoia_check */
-
-#if 0
-/* The following diagnostic routines allow the driver to spew
-   information on the screen, even (especially!) during interrupts.
- */
-void SP(char *data)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	printk(KERN_EMERG "%s", data);
-	local_irq_restore(flags);
-}
-
-char scrn[2];
-void CP(char data)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	scrn[0] = data;
-	printk(KERN_EMERG "%c", scrn);
-	local_irq_restore(flags);
-}				/* CP */
-
-void CP1(int data)
-{
-	(data < 10) ? CP(data + '0') : CP(data + 'A' - 10);
-}				/* CP1 */
-void CP2(int data)
-{
-	CP1((data >> 4) & 0x0f);
-	CP1(data & 0x0f);
-}				/* CP2 */
-void CP4(int data)
-{
-	CP2((data >> 8) & 0xff);
-	CP2(data & 0xff);
-}				/* CP4 */
-void CP8(long data)
-{
-	CP4((data >> 16) & 0xffff);
-	CP4(data & 0xffff);
-}				/* CP8 */
-#endif
-
-/* This routine waits up to 1000 micro-seconds for the previous
-   command to the Cirrus chip to complete and then issues the
-   new command.  An error is returned if the previous command
-   didn't finish within the time limit.
- */
-u_short write_cy_cmd(volatile u_char * base_addr, u_char cmd)
-{
-	unsigned long flags;
-	volatile int i;
-
-	local_irq_save(flags);
-	/* Check to see that the previous command has completed */
-	for (i = 0; i < 100; i++) {
-		if (base_addr[CyCCR] == 0) {
-			break;
-		}
-		my_udelay(10L);
-	}
-	/* if the CCR never cleared, the previous command
-	   didn't finish within the "reasonable time" */
-	if (i == 10) {
-		local_irq_restore(flags);
-		return (-1);
-	}
-
-	/* Issue the new command */
-	base_addr[CyCCR] = cmd;
-	local_irq_restore(flags);
-	return (0);
-}				/* write_cy_cmd */
-
-/* cy_start and cy_stop provide software output flow control as a
-   function of XON/XOFF, software CTS, and other such stuff. */
-
-static void cy_stop(struct tty_struct *tty)
-{
-	struct cyclades_port *info = tty->driver_data;
-	volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
-	int channel;
-	unsigned long flags;
-
-#ifdef SERIAL_DEBUG_OTHER
-	printk("cy_stop %s\n", tty->name);	/* */
-#endif
-
-	if (serial_paranoia_check(info, tty->name, "cy_stop"))
-		return;
-
-	channel = info->line;
-
-	local_irq_save(flags);
-	base_addr[CyCAR] = (u_char) (channel);	/* index channel */
-	base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
-	local_irq_restore(flags);
-}				/* cy_stop */
-
-static void cy_start(struct tty_struct *tty)
-{
-	struct cyclades_port *info = tty->driver_data;
-	volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
-	int channel;
-	unsigned long flags;
-
-#ifdef SERIAL_DEBUG_OTHER
-	printk("cy_start %s\n", tty->name);	/* */
-#endif
-
-	if (serial_paranoia_check(info, tty->name, "cy_start"))
-		return;
-
-	channel = info->line;
-
-	local_irq_save(flags);
-	base_addr[CyCAR] = (u_char) (channel);
-	base_addr[CyIER] |= CyTxMpty;
-	local_irq_restore(flags);
-}				/* cy_start */
-
-/* The real interrupt service routines are called
-   whenever the card wants its hand held--chars
-   received, out buffer empty, modem change, etc.
- */
-static irqreturn_t cd2401_rxerr_interrupt(int irq, void *dev_id)
-{
-	struct tty_struct *tty;
-	struct cyclades_port *info;
-	volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
-	unsigned char err, rfoc;
-	int channel;
-	char data;
-
-	/* determine the channel and change to that context */
-	channel = (u_short) (base_addr[CyLICR] >> 2);
-	info = &cy_port[channel];
-	info->last_active = jiffies;
-
-	if ((err = base_addr[CyRISR]) & CyTIMEOUT) {
-		/* This is a receive timeout interrupt, ignore it */
-		base_addr[CyREOIR] = CyNOTRANS;
-		return IRQ_HANDLED;
-	}
-
-	/* Read a byte of data if there is any - assume the error
-	 * is associated with this character */
-
-	if ((rfoc = base_addr[CyRFOC]) != 0)
-		data = base_addr[CyRDR];
-	else
-		data = 0;
-
-	/* if there is nowhere to put the data, discard it */
-	if (info->tty == 0) {
-		base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS;
-		return IRQ_HANDLED;
-	} else {		/* there is an open port for this data */
-		tty = info->tty;
-		if (err & info->ignore_status_mask) {
-			base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS;
-			return IRQ_HANDLED;
-		}
-		if (tty_buffer_request_room(tty, 1) != 0) {
-			if (err & info->read_status_mask) {
-				if (err & CyBREAK) {
-					tty_insert_flip_char(tty, data,
-							     TTY_BREAK);
-					if (info->flags & ASYNC_SAK) {
-						do_SAK(tty);
-					}
-				} else if (err & CyFRAME) {
-					tty_insert_flip_char(tty, data,
-							     TTY_FRAME);
-				} else if (err & CyPARITY) {
-					tty_insert_flip_char(tty, data,
-							     TTY_PARITY);
-				} else if (err & CyOVERRUN) {
-					tty_insert_flip_char(tty, 0,
-							     TTY_OVERRUN);
-					/*
-					   If the flip buffer itself is
-					   overflowing, we still lose
-					   the next incoming character.
-					 */
-					if (tty_buffer_request_room(tty, 1) !=
-					    0) {
-						tty_insert_flip_char(tty, data,
-								     TTY_FRAME);
-					}
-					/* These two conditions may imply */
-					/* a normal read should be done. */
-					/* else if(data & CyTIMEOUT) */
-					/* else if(data & CySPECHAR) */
-				} else {
-					tty_insert_flip_char(tty, 0,
-							     TTY_NORMAL);
-				}
-			} else {
-				tty_insert_flip_char(tty, data, TTY_NORMAL);
-			}
-		} else {
-			/* there was a software buffer overrun
-			   and nothing could be done about it!!! */
-		}
-	}
-	tty_schedule_flip(tty);
-	/* end of service */
-	base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS;
-	return IRQ_HANDLED;
-}				/* cy_rxerr_interrupt */
-
-static irqreturn_t cd2401_modem_interrupt(int irq, void *dev_id)
-{
-	struct cyclades_port *info;
-	volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
-	int channel;
-	int mdm_change;
-	int mdm_status;
-
-	/* determine the channel and change to that context */
-	channel = (u_short) (base_addr[CyLICR] >> 2);
-	info = &cy_port[channel];
-	info->last_active = jiffies;
-
-	mdm_change = base_addr[CyMISR];
-	mdm_status = base_addr[CyMSVR1];
-
-	if (info->tty == 0) {	/* nowhere to put the data, ignore it */
-		;
-	} else {
-		if ((mdm_change & CyDCD)
-		    && (info->flags & ASYNC_CHECK_CD)) {
-			if (mdm_status & CyDCD) {
-/* CP('!'); */
-				wake_up_interruptible(&info->open_wait);
-			} else {
-/* CP('@'); */
-				tty_hangup(info->tty);
-				wake_up_interruptible(&info->open_wait);
-				info->flags &= ~ASYNC_NORMAL_ACTIVE;
-			}
-		}
-		if ((mdm_change & CyCTS)
-		    && (info->flags & ASYNC_CTS_FLOW)) {
-			if (info->tty->stopped) {
-				if (mdm_status & CyCTS) {
-					/* !!! cy_start isn't used because... */
-					info->tty->stopped = 0;
-					base_addr[CyIER] |= CyTxMpty;
-					tty_wakeup(info->tty);
-				}
-			} else {
-				if (!(mdm_status & CyCTS)) {
-					/* !!! cy_stop isn't used because... */
-					info->tty->stopped = 1;
-					base_addr[CyIER] &=
-					    ~(CyTxMpty | CyTxRdy);
-				}
-			}
-		}
-		if (mdm_status & CyDSR) {
-		}
-	}
-	base_addr[CyMEOIR] = 0;
-	return IRQ_HANDLED;
-}				/* cy_modem_interrupt */
-
-static irqreturn_t cd2401_tx_interrupt(int irq, void *dev_id)
-{
-	struct cyclades_port *info;
-	volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
-	int channel;
-	int char_count, saved_cnt;
-	int outch;
-
-	/* determine the channel and change to that context */
-	channel = (u_short) (base_addr[CyLICR] >> 2);
-
-	/* validate the port number (as configured and open) */
-	if ((channel < 0) || (NR_PORTS <= channel)) {
-		base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
-		base_addr[CyTEOIR] = CyNOTRANS;
-		return IRQ_HANDLED;
-	}
-	info = &cy_port[channel];
-	info->last_active = jiffies;
-	if (info->tty == 0) {
-		base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
-		base_addr[CyTEOIR] = CyNOTRANS;
-		return IRQ_HANDLED;
-	}
-
-	/* load the on-chip space available for outbound data */
-	saved_cnt = char_count = base_addr[CyTFTC];
-
-	if (info->x_char) {	/* send special char */
-		outch = info->x_char;
-		base_addr[CyTDR] = outch;
-		char_count--;
-		info->x_char = 0;
-	}
-
-	if (info->x_break) {
-		/*  The Cirrus chip requires the "Embedded Transmit
-		   Commands" of start break, delay, and end break
-		   sequences to be sent.  The duration of the
-		   break is given in TICs, which runs at HZ
-		   (typically 100) and the PPR runs at 200 Hz,
-		   so the delay is duration * 200/HZ, and thus a
-		   break can run from 1/100 sec to about 5/4 sec.
-		   Need to check these values - RGH 141095.
-		 */
-		base_addr[CyTDR] = 0;	/* start break */
-		base_addr[CyTDR] = 0x81;
-		base_addr[CyTDR] = 0;	/* delay a bit */
-		base_addr[CyTDR] = 0x82;
-		base_addr[CyTDR] = info->x_break * 200 / HZ;
-		base_addr[CyTDR] = 0;	/* terminate break */
-		base_addr[CyTDR] = 0x83;
-		char_count -= 7;
-		info->x_break = 0;
-	}
-
-	while (char_count > 0) {
-		if (!info->xmit_cnt) {
-			base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
-			break;
-		}
-		if (info->xmit_buf == 0) {
-			base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
-			break;
-		}
-		if (info->tty->stopped || info->tty->hw_stopped) {
-			base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
-			break;
-		}
-		/* Because the Embedded Transmit Commands have been
-		   enabled, we must check to see if the escape
-		   character, NULL, is being sent.  If it is, we
-		   must ensure that there is room for it to be
-		   doubled in the output stream.  Therefore we
-		   no longer advance the pointer when the character
-		   is fetched, but rather wait until after the check
-		   for a NULL output character. (This is necessary
-		   because there may not be room for the two chars
-		   needed to send a NULL.
-		 */
-		outch = info->xmit_buf[info->xmit_tail];
-		if (outch) {
-			info->xmit_cnt--;
-			info->xmit_tail = (info->xmit_tail + 1)
-			    & (PAGE_SIZE - 1);
-			base_addr[CyTDR] = outch;
-			char_count--;
-		} else {
-			if (char_count > 1) {
-				info->xmit_cnt--;
-				info->xmit_tail = (info->xmit_tail + 1)
-				    & (PAGE_SIZE - 1);
-				base_addr[CyTDR] = outch;
-				base_addr[CyTDR] = 0;
-				char_count--;
-				char_count--;
-			} else {
-				break;
-			}
-		}
-	}
-
-	if (info->xmit_cnt < WAKEUP_CHARS)
-		tty_wakeup(info->tty);
-
-	base_addr[CyTEOIR] = (char_count != saved_cnt) ? 0 : CyNOTRANS;
-	return IRQ_HANDLED;
-}				/* cy_tx_interrupt */
-
-static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id)
-{
-	struct tty_struct *tty;
-	struct cyclades_port *info;
-	volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
-	int channel;
-	char data;
-	int char_count;
-	int save_cnt;
-
-	/* determine the channel and change to that context */
-	channel = (u_short) (base_addr[CyLICR] >> 2);
-	info = &cy_port[channel];
-	info->last_active = jiffies;
-	save_cnt = char_count = base_addr[CyRFOC];
-
-		/* if there is nowhere to put the data, discard it */
-	if (info->tty == 0) {
-		while (char_count--) {
-			data = base_addr[CyRDR];
-		}
-	} else {		/* there is an open port for this data */
-		tty = info->tty;
-		/* load # characters available from the chip */
-
-#ifdef CYCLOM_ENABLE_MONITORING
-		++info->mon.int_count;
-		info->mon.char_count += char_count;
-		if (char_count > info->mon.char_max)
-			info->mon.char_max = char_count;
-		info->mon.char_last = char_count;
-#endif
-		while (char_count--) {
-			data = base_addr[CyRDR];
-			tty_insert_flip_char(tty, data, TTY_NORMAL);
-#ifdef CYCLOM_16Y_HACK
-			udelay(10L);
-#endif
-		}
-		tty_schedule_flip(tty);
-	}
-	/* end of service */
-	base_addr[CyREOIR] = save_cnt ? 0 : CyNOTRANS;
-	return IRQ_HANDLED;
-}				/* cy_rx_interrupt */
-
-/* This is called whenever a port becomes active;
-   interrupts are enabled and DTR & RTS are turned on.
- */
-static int startup(struct cyclades_port *info)
-{
-	unsigned long flags;
-	volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
-	int channel;
-
-	if (info->flags & ASYNC_INITIALIZED) {
-		return 0;
-	}
-
-	if (!info->type) {
-		if (info->tty) {
-			set_bit(TTY_IO_ERROR, &info->tty->flags);
-		}
-		return 0;
-	}
-	if (!info->xmit_buf) {
-		info->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL);
-		if (!info->xmit_buf) {
-			return -ENOMEM;
-		}
-	}
-
-	config_setup(info);
-
-	channel = info->line;
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk("startup channel %d\n", channel);
-#endif
-
-	local_irq_save(flags);
-	base_addr[CyCAR] = (u_char) channel;
-	write_cy_cmd(base_addr, CyENB_RCVR | CyENB_XMTR);
-
-	base_addr[CyCAR] = (u_char) channel;	/* !!! Is this needed? */
-	base_addr[CyMSVR1] = CyRTS;
-/* CP('S');CP('1'); */
-	base_addr[CyMSVR2] = CyDTR;
-
-#ifdef SERIAL_DEBUG_DTR
-	printk("cyc: %d: raising DTR\n", __LINE__);
-	printk("     status: 0x%x, 0x%x\n", base_addr[CyMSVR1],
-	       base_addr[CyMSVR2]);
-#endif
-
-	base_addr[CyIER] |= CyRxData;
-	info->flags |= ASYNC_INITIALIZED;
-
-	if (info->tty) {
-		clear_bit(TTY_IO_ERROR, &info->tty->flags);
-	}
-	info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
-
-	local_irq_restore(flags);
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk(" done\n");
-#endif
-	return 0;
-}				/* startup */
-
-void start_xmit(struct cyclades_port *info)
-{
-	unsigned long flags;
-	volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
-	int channel;
-
-	channel = info->line;
-	local_irq_save(flags);
-	base_addr[CyCAR] = channel;
-	base_addr[CyIER] |= CyTxMpty;
-	local_irq_restore(flags);
-}				/* start_xmit */
-
-/*
- * This routine shuts down a serial port; interrupts are disabled,
- * and DTR is dropped if the hangup on close termio flag is on.
- */
-static void shutdown(struct cyclades_port *info)
-{
-	unsigned long flags;
-	volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
-	int channel;
-
-	if (!(info->flags & ASYNC_INITIALIZED)) {
-/* CP('$'); */
-		return;
-	}
-
-	channel = info->line;
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk("shutdown channel %d\n", channel);
-#endif
-
-	/* !!! REALLY MUST WAIT FOR LAST CHARACTER TO BE
-	   SENT BEFORE DROPPING THE LINE !!!  (Perhaps
-	   set some flag that is read when XMTY happens.)
-	   Other choices are to delay some fixed interval
-	   or schedule some later processing.
-	 */
-	local_irq_save(flags);
-	if (info->xmit_buf) {
-		free_page((unsigned long)info->xmit_buf);
-		info->xmit_buf = NULL;
-	}
-
-	base_addr[CyCAR] = (u_char) channel;
-	if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
-		base_addr[CyMSVR1] = 0;
-/* CP('C');CP('1'); */
-		base_addr[CyMSVR2] = 0;
-#ifdef SERIAL_DEBUG_DTR
-		printk("cyc: %d: dropping DTR\n", __LINE__);
-		printk("     status: 0x%x, 0x%x\n", base_addr[CyMSVR1],
-		       base_addr[CyMSVR2]);
-#endif
-	}
-	write_cy_cmd(base_addr, CyDIS_RCVR);
-	/* it may be appropriate to clear _XMIT at
-	   some later date (after testing)!!! */
-
-	if (info->tty) {
-		set_bit(TTY_IO_ERROR, &info->tty->flags);
-	}
-	info->flags &= ~ASYNC_INITIALIZED;
-	local_irq_restore(flags);
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk(" done\n");
-#endif
-}				/* shutdown */
-
-/*
- * This routine finds or computes the various line characteristics.
- */
-static void config_setup(struct cyclades_port *info)
-{
-	unsigned long flags;
-	volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
-	int channel;
-	unsigned cflag;
-	int i;
-	unsigned char ti, need_init_chan = 0;
-
-	if (!info->tty || !info->tty->termios) {
-		return;
-	}
-	if (info->line == -1) {
-		return;
-	}
-	cflag = info->tty->termios->c_cflag;
-
-	/* baud rate */
-	i = cflag & CBAUD;
-#ifdef CBAUDEX
-/* Starting with kernel 1.1.65, there is direct support for
-   higher baud rates.  The following code supports those
-   changes.  The conditional aspect allows this driver to be
-   used for earlier as well as later kernel versions.  (The
-   mapping is slightly different from serial.c because there
-   is still the possibility of supporting 75 kbit/sec with
-   the Cyclades board.)
- */
-	if (i & CBAUDEX) {
-		if (i == B57600)
-			i = 16;
-		else if (i == B115200)
-			i = 18;
-#ifdef B78600
-		else if (i == B78600)
-			i = 17;
-#endif
-		else
-			info->tty->termios->c_cflag &= ~CBAUDEX;
-	}
-#endif
-	if (i == 15) {
-		if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
-			i += 1;
-		if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
-			i += 3;
-	}
-	/* Don't ever change the speed of the console port.  It will
-	 * run at the speed specified in bootinfo, or at 19.2K */
-	/* Actually, it should run at whatever speed 166Bug was using */
-	/* Note info->timeout isn't used at present */
-	if (info != serial_console_info) {
-		info->tbpr = baud_bpr[i];	/* Tx BPR */
-		info->tco = baud_co[i];	/* Tx CO */
-		info->rbpr = baud_bpr[i];	/* Rx BPR */
-		info->rco = baud_co[i] >> 5;	/* Rx CO */
-		if (baud_table[i] == 134) {
-			info->timeout =
-			    (info->xmit_fifo_size * HZ * 30 / 269) + 2;
-			/* get it right for 134.5 baud */
-		} else if (baud_table[i]) {
-			info->timeout =
-			    (info->xmit_fifo_size * HZ * 15 / baud_table[i]) +
-			    2;
-			/* this needs to be propagated into the card info */
-		} else {
-			info->timeout = 0;
-		}
-	}
-	/* By tradition (is it a standard?) a baud rate of zero
-	   implies the line should be/has been closed.  A bit
-	   later in this routine such a test is performed. */
-
-	/* byte size and parity */
-	info->cor7 = 0;
-	info->cor6 = 0;
-	info->cor5 = 0;
-	info->cor4 = (info->default_threshold ? info->default_threshold : baud_cor4[i]);	/* receive threshold */
-	/* Following two lines added 101295, RGH. */
-	/* It is obviously wrong to access CyCORx, and not info->corx here,
-	 * try and remember to fix it later! */
-	channel = info->line;
-	base_addr[CyCAR] = (u_char) channel;
-	if (C_CLOCAL(info->tty)) {
-		if (base_addr[CyIER] & CyMdmCh)
-			base_addr[CyIER] &= ~CyMdmCh;	/* without modem intr */
-		/* ignore 1->0 modem transitions */
-		if (base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD))
-			base_addr[CyCOR4] &= ~(CyDSR | CyCTS | CyDCD);
-		/* ignore 0->1 modem transitions */
-		if (base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD))
-			base_addr[CyCOR5] &= ~(CyDSR | CyCTS | CyDCD);
-	} else {
-		if ((base_addr[CyIER] & CyMdmCh) != CyMdmCh)
-			base_addr[CyIER] |= CyMdmCh;	/* with modem intr */
-		/* act on 1->0 modem transitions */
-		if ((base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD)) !=
-		    (CyDSR | CyCTS | CyDCD))
-			base_addr[CyCOR4] |= CyDSR | CyCTS | CyDCD;
-		/* act on 0->1 modem transitions */
-		if ((base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD)) !=
-		    (CyDSR | CyCTS | CyDCD))
-			base_addr[CyCOR5] |= CyDSR | CyCTS | CyDCD;
-	}
-	info->cor3 = (cflag & CSTOPB) ? Cy_2_STOP : Cy_1_STOP;
-	info->cor2 = CyETC;
-	switch (cflag & CSIZE) {
-	case CS5:
-		info->cor1 = Cy_5_BITS;
-		break;
-	case CS6:
-		info->cor1 = Cy_6_BITS;
-		break;
-	case CS7:
-		info->cor1 = Cy_7_BITS;
-		break;
-	case CS8:
-		info->cor1 = Cy_8_BITS;
-		break;
-	}
-	if (cflag & PARENB) {
-		if (cflag & PARODD) {
-			info->cor1 |= CyPARITY_O;
-		} else {
-			info->cor1 |= CyPARITY_E;
-		}
-	} else {
-		info->cor1 |= CyPARITY_NONE;
-	}
-
-	/* CTS flow control flag */
-#if 0
-	/* Don't complcate matters for now! RGH 141095 */
-	if (cflag & CRTSCTS) {
-		info->flags |= ASYNC_CTS_FLOW;
-		info->cor2 |= CyCtsAE;
-	} else {
-		info->flags &= ~ASYNC_CTS_FLOW;
-		info->cor2 &= ~CyCtsAE;
-	}
-#endif
-	if (cflag & CLOCAL)
-		info->flags &= ~ASYNC_CHECK_CD;
-	else
-		info->flags |= ASYNC_CHECK_CD;
-
-     /***********************************************
-	The hardware option, CyRtsAO, presents RTS when
-	the chip has characters to send.  Since most modems
-	use RTS as reverse (inbound) flow control, this
-	option is not used.  If inbound flow control is
-	necessary, DTR can be programmed to provide the
-	appropriate signals for use with a non-standard
-	cable.  Contact Marcio Saito for details.
-     ***********************************************/
-
-	channel = info->line;
-
-	local_irq_save(flags);
-	base_addr[CyCAR] = (u_char) channel;
-
-	/* CyCMR set once only in mvme167_init_serial() */
-	if (base_addr[CyLICR] != channel << 2)
-		base_addr[CyLICR] = channel << 2;
-	if (base_addr[CyLIVR] != 0x5c)
-		base_addr[CyLIVR] = 0x5c;
-
-	/* tx and rx baud rate */
-
-	if (base_addr[CyCOR1] != info->cor1)
-		need_init_chan = 1;
-	if (base_addr[CyTCOR] != info->tco)
-		base_addr[CyTCOR] = info->tco;
-	if (base_addr[CyTBPR] != info->tbpr)
-		base_addr[CyTBPR] = info->tbpr;
-	if (base_addr[CyRCOR] != info->rco)
-		base_addr[CyRCOR] = info->rco;
-	if (base_addr[CyRBPR] != info->rbpr)
-		base_addr[CyRBPR] = info->rbpr;
-
-	/* set line characteristics  according configuration */
-
-	if (base_addr[CySCHR1] != START_CHAR(info->tty))
-		base_addr[CySCHR1] = START_CHAR(info->tty);
-	if (base_addr[CySCHR2] != STOP_CHAR(info->tty))
-		base_addr[CySCHR2] = STOP_CHAR(info->tty);
-	if (base_addr[CySCRL] != START_CHAR(info->tty))
-		base_addr[CySCRL] = START_CHAR(info->tty);
-	if (base_addr[CySCRH] != START_CHAR(info->tty))
-		base_addr[CySCRH] = START_CHAR(info->tty);
-	if (base_addr[CyCOR1] != info->cor1)
-		base_addr[CyCOR1] = info->cor1;
-	if (base_addr[CyCOR2] != info->cor2)
-		base_addr[CyCOR2] = info->cor2;
-	if (base_addr[CyCOR3] != info->cor3)
-		base_addr[CyCOR3] = info->cor3;
-	if (base_addr[CyCOR4] != info->cor4)
-		base_addr[CyCOR4] = info->cor4;
-	if (base_addr[CyCOR5] != info->cor5)
-		base_addr[CyCOR5] = info->cor5;
-	if (base_addr[CyCOR6] != info->cor6)
-		base_addr[CyCOR6] = info->cor6;
-	if (base_addr[CyCOR7] != info->cor7)
-		base_addr[CyCOR7] = info->cor7;
-
-	if (need_init_chan)
-		write_cy_cmd(base_addr, CyINIT_CHAN);
-
-	base_addr[CyCAR] = (u_char) channel;	/* !!! Is this needed? */
-
-	/* 2ms default rx timeout */
-	ti = info->default_timeout ? info->default_timeout : 0x02;
-	if (base_addr[CyRTPRL] != ti)
-		base_addr[CyRTPRL] = ti;
-	if (base_addr[CyRTPRH] != 0)
-		base_addr[CyRTPRH] = 0;
-
-	/* Set up RTS here also ????? RGH 141095 */
-	if (i == 0) {		/* baud rate is zero, turn off line */
-		if ((base_addr[CyMSVR2] & CyDTR) == CyDTR)
-			base_addr[CyMSVR2] = 0;
-#ifdef SERIAL_DEBUG_DTR
-		printk("cyc: %d: dropping DTR\n", __LINE__);
-		printk("     status: 0x%x, 0x%x\n", base_addr[CyMSVR1],
-		       base_addr[CyMSVR2]);
-#endif
-	} else {
-		if ((base_addr[CyMSVR2] & CyDTR) != CyDTR)
-			base_addr[CyMSVR2] = CyDTR;
-#ifdef SERIAL_DEBUG_DTR
-		printk("cyc: %d: raising DTR\n", __LINE__);
-		printk("     status: 0x%x, 0x%x\n", base_addr[CyMSVR1],
-		       base_addr[CyMSVR2]);
-#endif
-	}
-
-	if (info->tty) {
-		clear_bit(TTY_IO_ERROR, &info->tty->flags);
-	}
-
-	local_irq_restore(flags);
-
-}				/* config_setup */
-
-static int cy_put_char(struct tty_struct *tty, unsigned char ch)
-{
-	struct cyclades_port *info = tty->driver_data;
-	unsigned long flags;
-
-#ifdef SERIAL_DEBUG_IO
-	printk("cy_put_char %s(0x%02x)\n", tty->name, ch);
-#endif
-
-	if (serial_paranoia_check(info, tty->name, "cy_put_char"))
-		return 0;
-
-	if (!info->xmit_buf)
-		return 0;
-
-	local_irq_save(flags);
-	if (info->xmit_cnt >= PAGE_SIZE - 1) {
-		local_irq_restore(flags);
-		return 0;
-	}
-
-	info->xmit_buf[info->xmit_head++] = ch;
-	info->xmit_head &= PAGE_SIZE - 1;
-	info->xmit_cnt++;
-	local_irq_restore(flags);
-	return 1;
-}				/* cy_put_char */
-
-static void cy_flush_chars(struct tty_struct *tty)
-{
-	struct cyclades_port *info = tty->driver_data;
-	unsigned long flags;
-	volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
-	int channel;
-
-#ifdef SERIAL_DEBUG_IO
-	printk("cy_flush_chars %s\n", tty->name);	/* */
-#endif
-
-	if (serial_paranoia_check(info, tty->name, "cy_flush_chars"))
-		return;
-
-	if (info->xmit_cnt <= 0 || tty->stopped
-	    || tty->hw_stopped || !info->xmit_buf)
-		return;
-
-	channel = info->line;
-
-	local_irq_save(flags);
-	base_addr[CyCAR] = channel;
-	base_addr[CyIER] |= CyTxMpty;
-	local_irq_restore(flags);
-}				/* cy_flush_chars */
-
-/* This routine gets called when tty_write has put something into
-    the write_queue.  If the port is not already transmitting stuff,
-    start it off by enabling interrupts.  The interrupt service
-    routine will then ensure that the characters are sent.  If the
-    port is already active, there is no need to kick it.
- */
-static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
-{
-	struct cyclades_port *info = tty->driver_data;
-	unsigned long flags;
-	int c, total = 0;
-