Move ip2.c and ip2main.c to drivers/char/ip2/ where the other files

used by this driver reside.

Renamed ip2.c to ip2base.c to allow ip2.o to be built from multiple
objects.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Michael H. Warfield <mhw@WittsEnd.com>

1 files changed, 3260 insertions, 0 deletions

diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
new file mode 100644
index 0000000..52f64bf
--- /dev/null
+++ b/drivers/char/ip2/ip2main.c
@@ -0,0 +1,3260 @@
+/*
+*
+*   (c) 1999 by Computone Corporation
+*
+********************************************************************************
+*
+*   PACKAGE:     Linux tty Device Driver for IntelliPort family of multiport
+*                serial I/O controllers.
+*
+*   DESCRIPTION: Mainline code for the device driver
+*
+*******************************************************************************/
+// ToDo:
+//
+// Fix the immediate DSS_NOW problem.
+// Work over the channel stats return logic in ip2_ipl_ioctl so they
+//	make sense for all 256 possible channels and so the user space
+//	utilities will compile and work properly.
+//
+// Done:
+//
+// 1.2.14	/\/\|=mhw=|\/\/
+// Added bounds checking to ip2_ipl_ioctl to avoid potential terroristic acts.
+// Changed the definition of ip2trace to be more consistent with kernel style
+//	Thanks to Andreas Dilger <adilger@turbolabs.com> for these updates
+//
+// 1.2.13	/\/\|=mhw=|\/\/
+// DEVFS: Renamed ttf/{n} to tts/F{n} and cuf/{n} to cua/F{n} to conform
+//	to agreed devfs serial device naming convention.
+//
+// 1.2.12	/\/\|=mhw=|\/\/
+// Cleaned up some remove queue cut and paste errors
+//
+// 1.2.11	/\/\|=mhw=|\/\/
+// Clean up potential NULL pointer dereferences
+// Clean up devfs registration
+// Add kernel command line parsing for io and irq
+//	Compile defaults for io and irq are now set in ip2.c not ip2.h!
+// Reworked poll_only hack for explicit parameter setting
+//	You must now EXPLICITLY set poll_only = 1 or set all irqs to 0
+// Merged ip2_loadmain and old_ip2_init
+// Converted all instances of interruptible_sleep_on into queue calls
+//	Most of these had no race conditions but better to clean up now
+//
+// 1.2.10	/\/\|=mhw=|\/\/
+// Fixed the bottom half interrupt handler and enabled USE_IQI
+//	to split the interrupt handler into a formal top-half / bottom-half
+// Fixed timing window on high speed processors that queued messages to
+// 	the outbound mail fifo faster than the board could handle.
+//
+// 1.2.9
+// Four box EX was barfing on >128k kmalloc, made structure smaller by
+// reducing output buffer size
+//
+// 1.2.8
+// Device file system support (MHW)
+//
+// 1.2.7 
+// Fixed
+// Reload of ip2 without unloading ip2main hangs system on cat of /proc/modules
+//
+// 1.2.6
+//Fixes DCD problems
+//	DCD was not reported when CLOCAL was set on call to TIOCMGET
+//
+//Enhancements:
+//	TIOCMGET requests and waits for status return
+//	No DSS interrupts enabled except for DCD when needed
+//
+// For internal use only
+//
+//#define IP2DEBUG_INIT
+//#define IP2DEBUG_OPEN
+//#define IP2DEBUG_WRITE
+//#define IP2DEBUG_READ
+//#define IP2DEBUG_IOCTL
+//#define IP2DEBUG_IPL
+
+//#define IP2DEBUG_TRACE
+//#define DEBUG_FIFO
+
+/************/
+/* Includes */
+/************/
+#include <linux/config.h>
+
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/major.h>
+#include <linux/wait.h>
+#include <linux/device.h>
+
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/termios.h>
+#include <linux/tty_driver.h>
+#include <linux/serial.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+
+#include <linux/cdk.h>
+#include <linux/comstats.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include <linux/vmalloc.h>
+#include <linux/init.h>
+
+#include <asm/uaccess.h>
+
+#include "ip2types.h"
+#include "ip2trace.h"
+#include "ip2ioctl.h"
+#include "ip2.h"
+#include "i2ellis.h"
+#include "i2lib.h"
+
+/*****************
+ * /proc/ip2mem  *
+ *****************/
+
+#include <linux/proc_fs.h>
+
+static int ip2_read_procmem(char *, char **, off_t, int);
+static int ip2_read_proc(char *, char **, off_t, int, int *, void * );
+
+/********************/
+/* Type Definitions */
+/********************/
+
+/*************/
+/* Constants */
+/*************/
+
+/* String constants to identify ourselves */
+static char *pcName    = "Computone IntelliPort Plus multiport driver";
+static char *pcVersion = "1.2.14";
+
+/* String constants for port names */
+static char *pcDriver_name   = "ip2";
+static char *pcIpl    		 = "ip2ipl";
+
+/* Serial subtype definitions */
+#define SERIAL_TYPE_NORMAL    1
+
+// cheezy kludge or genius - you decide?
+int ip2_loadmain(int *, int *, unsigned char *, int);
+static unsigned char *Fip_firmware;
+static int Fip_firmware_size;
+
+/***********************/
+/* Function Prototypes */
+/***********************/
+
+/* Global module entry functions */
+
+/* Private (static) functions */
+static int  ip2_open(PTTY, struct file *);
+static void ip2_close(PTTY, struct file *);
+static int  ip2_write(PTTY, const unsigned char *, int);
+static void ip2_putchar(PTTY, unsigned char);
+static void ip2_flush_chars(PTTY);
+static int  ip2_write_room(PTTY);
+static int  ip2_chars_in_buf(PTTY);
+static void ip2_flush_buffer(PTTY);
+static int  ip2_ioctl(PTTY, struct file *, UINT, ULONG);
+static void ip2_set_termios(PTTY, struct termios *);
+static void ip2_set_line_discipline(PTTY);
+static void ip2_throttle(PTTY);
+static void ip2_unthrottle(PTTY);
+static void ip2_stop(PTTY);
+static void ip2_start(PTTY);
+static void ip2_hangup(PTTY);
+static int  ip2_tiocmget(struct tty_struct *tty, struct file *file);
+static int  ip2_tiocmset(struct tty_struct *tty, struct file *file,
+			 unsigned int set, unsigned int clear);
+
+static void set_irq(int, int);
+static void ip2_interrupt_bh(i2eBordStrPtr pB);
+static irqreturn_t ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs);
+static void ip2_poll(unsigned long arg);
+static inline void service_all_boards(void);
+static void do_input(void *p);
+static void do_status(void *p);
+
+static void ip2_wait_until_sent(PTTY,int);
+
+static void set_params (i2ChanStrPtr, struct termios *);
+static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *);
+static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *);
+
+static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *);
+static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *);
+static int ip2_ipl_ioctl(struct inode *, struct file *, UINT, ULONG);
+static int ip2_ipl_open(struct inode *, struct file *);
+
+static int DumpTraceBuffer(char __user *, int);
+static int DumpFifoBuffer( char __user *, int);
+
+static void ip2_init_board(int);
+static unsigned short find_eisa_board(int);
+
+/***************/
+/* Static Data */
+/***************/
+
+static struct tty_driver *ip2_tty_driver;
+
+/* Here, then is a table of board pointers which the interrupt routine should
+ * scan through to determine who it must service.
+ */
+static unsigned short i2nBoards; // Number of boards here
+
+static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS];
+
+static i2ChanStrPtr  DevTable[IP2_MAX_PORTS];
+//DevTableMem just used to save addresses for kfree
+static void  *DevTableMem[IP2_MAX_BOARDS];
+
+/* This is the driver descriptor for the ip2ipl device, which is used to
+ * download the loadware to the boards.
+ */
+static struct file_operations ip2_ipl = {
+	.owner		= THIS_MODULE,
+	.read		= ip2_ipl_read,
+	.write		= ip2_ipl_write,
+	.ioctl		= ip2_ipl_ioctl,
+	.open		= ip2_ipl_open,
+}; 
+
+static unsigned long irq_counter = 0;
+static unsigned long bh_counter = 0;
+
+// Use immediate queue to service interrupts
+#define USE_IQI
+//#define USE_IQ	// PCI&2.2 needs work
+
+/* The timer_list entry for our poll routine. If interrupt operation is not
+ * selected, the board is serviced periodically to see if anything needs doing.
+ */
+#define  POLL_TIMEOUT   (jiffies + 1)
+static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0);
+static char  TimerOn;
+
+#ifdef IP2DEBUG_TRACE
+/* Trace (debug) buffer data */
+#define TRACEMAX  1000
+static unsigned long tracebuf[TRACEMAX];
+static int tracestuff;
+static int tracestrip;
+static int tracewrap;
+#endif
+
+/**********/
+/* Macros */
+/**********/
+
+#if defined(MODULE) && defined(IP2DEBUG_OPEN)
+#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \
+		    tty->name,(pCh->flags),ip2_tty_driver->refcount, \
+		    tty->count,/*GET_USE_COUNT(module)*/0,s)
+#else
+#define DBG_CNT(s)
+#endif
+
+/********/
+/* Code */
+/********/
+
+#include "i2ellis.c"    /* Extremely low-level interface services */
+#include "i2cmd.c"      /* Standard loadware command definitions */
+#include "i2lib.c"      /* High level interface services */
+
+/* Configuration area for modprobe */
+
+MODULE_AUTHOR("Doug McNash");
+MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
+
+static int poll_only = 0;
+
+static int Eisa_irq;
+static int Eisa_slot;
+
+static int iindx;
+static char rirqs[IP2_MAX_BOARDS];
+static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0};
+
+/* for sysfs class support */
+static struct class *ip2_class;
+
+// Some functions to keep track of what irq's we have
+
+static int __init
+is_valid_irq(int irq)
+{
+	int *i = Valid_Irqs;
+	
+	while ((*i != 0) && (*i != irq)) {
+		i++;
+	}
+	return (*i);
+}
+
+static void __init
+mark_requested_irq( char irq )
+{
+	rirqs[iindx++] = irq;
+}
+
+#ifdef MODULE
+static int __init
+clear_requested_irq( char irq )
+{
+	int i;
+	for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		if (rirqs[i] == irq) {
+			rirqs[i] = 0;
+			return 1;
+		}
+	}
+	return 0;
+}
+#endif
+
+static int __init
+have_requested_irq( char irq )
+{
+	// array init to zeros so 0 irq will not be requested as a side effect
+	int i;
+	for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		if (rirqs[i] == irq)
+			return 1;
+	}
+	return 0;
+}
+
+/******************************************************************************/
+/* Function:   init_module()                                                  */
+/* Parameters: None                                                           */
+/* Returns:    Success (0)                                                    */
+/*                                                                            */
+/* Description:                                                               */
+/* This is a required entry point for an installable module. It simply calls  */
+/* the driver initialisation function and returns what it returns.            */
+/******************************************************************************/
+#ifdef MODULE
+int
+init_module(void)
+{
+#ifdef IP2DEBUG_INIT
+	printk (KERN_DEBUG "Loading module ...\n" );
+#endif
+    return 0;
+}
+#endif /* MODULE */
+
+/******************************************************************************/
+/* Function:   cleanup_module()                                               */
+/* Parameters: None                                                           */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/* This is a required entry point for an installable module. It has to return */
+/* the device and the driver to a passive state. It should not be necessary   */
+/* to reset the board fully, especially as the loadware is downloaded         */
+/* externally rather than in the driver. We just want to disable the board    */
+/* and clear the loadware to a reset state. To allow this there has to be a   */
+/* way to detect whether the board has the loadware running at init time to   */
+/* handle subsequent installations of the driver. All memory allocated by the */
+/* driver should be returned since it may be unloaded from memory.            */
+/******************************************************************************/
+#ifdef MODULE
+void
+cleanup_module(void)
+{
+	int err;
+	int i;
+
+#ifdef IP2DEBUG_INIT
+	printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion );
+#endif
+	/* Stop poll timer if we had one. */
+	if ( TimerOn ) {
+		del_timer ( &PollTimer );
+		TimerOn = 0;
+	}
+
+	/* Reset the boards we have. */
+	for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		if ( i2BoardPtrTable[i] ) {
+			iiReset( i2BoardPtrTable[i] );
+		}
+	}
+
+	/* The following is done at most once, if any boards were installed. */
+	for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		if ( i2BoardPtrTable[i] ) {
+			iiResetDelay( i2BoardPtrTable[i] );
+			/* free io addresses and Tibet */
+			release_region( ip2config.addr[i], 8 );
+			class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i));
+			devfs_remove("ip2/ipl%d", i);
+			class_device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1));
+			devfs_remove("ip2/stat%d", i);
+		}
+		/* Disable and remove interrupt handler. */
+		if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) {	
+			free_irq ( ip2config.irq[i], (void *)&pcName);
+			clear_requested_irq( ip2config.irq[i]);
+		}
+	}
+	class_destroy(ip2_class);
+	devfs_remove("ip2");
+	if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) {
+		printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err);
+	}
+	put_tty_driver(ip2_tty_driver);
+	if ( ( err = unregister_chrdev ( IP2_IPL_MAJOR, pcIpl ) ) ) {
+		printk(KERN_ERR "IP2: failed to unregister IPL driver (%d)\n", err);
+	}
+	remove_proc_entry("ip2mem", &proc_root);
+
+	// free memory
+	for (i = 0; i < IP2_MAX_BOARDS; i++) {
+		void *pB;
+#ifdef CONFIG_PCI
+		if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) {
+			pci_disable_device(ip2config.pci_dev[i]);
+			ip2config.pci_dev[i] = NULL;
+		}
+#endif
+		if ((pB = i2BoardPtrTable[i]) != 0 ) {
+			kfree ( pB );
+			i2BoardPtrTable[i] = NULL;
+		}
+		if ((DevTableMem[i]) != NULL ) {
+			kfree ( DevTableMem[i]  );
+			DevTableMem[i] = NULL;
+		}
+	}
+
+	/* Cleanup the iiEllis subsystem. */
+	iiEllisCleanup();
+#ifdef IP2DEBUG_INIT
+	printk (KERN_DEBUG "IP2 Unloaded\n" );
+#endif
+}
+#endif /* MODULE */
+
+static struct tty_operations ip2_ops = {
+	.open            = ip2_open,
+	.close           = ip2_close,
+	.write           = ip2_write,
+	.put_char        = ip2_putchar,
+	.flush_chars     = ip2_flush_chars,
+	.write_room      = ip2_write_room,
+	.chars_in_buffer = ip2_chars_in_buf,
+	.flush_buffer    = ip2_flush_buffer,
+	.ioctl           = ip2_ioctl,
+	.throttle        = ip2_throttle,
+	.unthrottle      = ip2_unthrottle,
+	.set_termios     = ip2_set_termios,
+	.set_ldisc       = ip2_set_line_discipline,
+	.stop            = ip2_stop,
+	.start           = ip2_start,
+	.hangup          = ip2_hangup,
+	.read_proc       = ip2_read_proc,
+	.tiocmget	 = ip2_tiocmget,
+	.tiocmset	 = ip2_tiocmset,
+};
+
+/******************************************************************************/
+/* Function:   ip2_loadmain()                                                 */
+/* Parameters: irq, io from command line of insmod et. al.                    */
+/*		pointer to fip firmware and firmware size for boards	      */
+/* Returns:    Success (0)                                                    */
+/*                                                                            */
+/* Description:                                                               */
+/* This was the required entry point for all drivers (now in ip2.c)           */
+/* It performs all                                                            */
+/* initialisation of the devices and driver structures, and registers itself  */
+/* with the relevant kernel modules.                                          */
+/******************************************************************************/
+/* SA_INTERRUPT- if set blocks all interrupts else only this line */
+/* SA_SHIRQ    - for shared irq PCI or maybe EISA only */
+/* SA_RANDOM   - can be source for cert. random number generators */
+#define IP2_SA_FLAGS	0
+
+int
+ip2_loadmain(int *iop, int *irqp, unsigned char *firmware, int firmsize) 
+{
+	int i, j, box;
+	int err = 0;
+	int status = 0;
+	static int loaded;
+	i2eBordStrPtr pB = NULL;
+	int rc = -1;
+
+	ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 );
+
+	/* process command line arguments to modprobe or
+		insmod i.e. iop & irqp */
+	/* irqp and iop should ALWAYS be specified now...  But we check
+		them individually just to be sure, anyways... */
+	for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		if (iop) {
+			ip2config.addr[i] = iop[i];
+			if (irqp) {
+				if( irqp[i] >= 0 ) {
+					ip2config.irq[i] = irqp[i];
+				} else {
+					ip2config.irq[i] = 0;
+				}
+	// This is a little bit of a hack.  If poll_only=1 on command
+	// line back in ip2.c OR all IRQs on all specified boards are
+	// explicitly set to 0, then drop to poll only mode and override
+	// PCI or EISA interrupts.  This superceeds the old hack of
+	// triggering if all interrupts were zero (like da default).
+	// Still a hack but less prone to random acts of terrorism.
+	//
+	// What we really should do, now that the IRQ default is set
+	// to -1, is to use 0 as a hard coded, do not probe.
+	//
+	//	/\/\|=mhw=|\/\/
+				poll_only |= irqp[i];
+			}
+		}
+	}
+	poll_only = !poll_only;
+
+	Fip_firmware = firmware;
+	Fip_firmware_size = firmsize;
+
+	/* Announce our presence */
+	printk( KERN_INFO "%s version %s\n", pcName, pcVersion );
+
+	// ip2 can be unloaded and reloaded for no good reason
+	// we can't let that happen here or bad things happen
+	// second load hoses board but not system - fixme later
+	if (loaded) {
+		printk( KERN_INFO "Still loaded\n" );
+		return 0;
+	}
+	loaded++;
+
+	ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS);
+	if (!ip2_tty_driver)
+		return -ENOMEM;
+
+	/* Initialise the iiEllis subsystem. */
+	iiEllisInit();
+
+	/* Initialize arrays. */
+	memset( i2BoardPtrTable, 0, sizeof i2BoardPtrTable );
+	memset( DevTable, 0, sizeof DevTable );
+
+	/* Initialise all the boards we can find (up to the maximum). */
+	for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		switch ( ip2config.addr[i] ) { 
+		case 0:	/* skip this slot even if card is present */
+			break;
+		default: /* ISA */
+		   /* ISA address must be specified */
+			if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) {
+				printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n",
+							 i, ip2config.addr[i] );
+				ip2config.addr[i] = 0;
+			} else {
+				ip2config.type[i] = ISA;
+
+				/* Check for valid irq argument, set for polling if invalid */
+				if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) {
+					printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]);
+					ip2config.irq[i] = 0;// 0 is polling and is valid in that sense
+				}
+			}
+			break;
+		case PCI:
+#ifdef CONFIG_PCI
+			{
+				struct pci_dev *pci_dev_i = NULL;
+				pci_dev_i = pci_find_device(PCI_VENDOR_ID_COMPUTONE,
+							  PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i);
+				if (pci_dev_i != NULL) {
+					unsigned int addr;
+
+					if (pci_enable_device(pci_dev_i)) {
+						printk( KERN_ERR "IP2: can't enable PCI device at %s\n",
+							pci_name(pci_dev_i));
+						break;
+					}
+					ip2config.type[i] = PCI;
+					ip2config.pci_dev[i] = pci_dev_i;
+					status =
+					pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr);
+					if ( addr & 1 ) {
+						ip2config.addr[i]=(USHORT)(addr&0xfffe);
+					} else {
+						printk( KERN_ERR "IP2: PCI I/O address error\n");
+					}
+
+//		If the PCI BIOS assigned it, lets try and use it.  If we
+//		can't acquire it or it screws up, deal with it then.
+
+//					if (!is_valid_irq(pci_irq)) {
+//						printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq);
+//						pci_irq = 0;
+//					}
+					ip2config.irq[i] = pci_dev_i->irq;
+				} else {	// ann error
+					ip2config.addr[i] = 0;
+					if (status == PCIBIOS_DEVICE_NOT_FOUND) {
+						printk( KERN_ERR "IP2: PCI board %d not found\n", i );
+					} else {
+						printk( KERN_ERR "IP2: PCI error 0x%x \n", status );
+					}
+				} 
+			}
+#else
+			printk( KERN_ERR "IP2: PCI card specified but PCI support not\n");
+			printk( KERN_ERR "IP2: configured in this kernel.\n");
+			printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n");
+#endif /* CONFIG_PCI */
+			break;
+		case EISA:
+			if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) {
+				/* Eisa_irq set as side effect, boo */
+				ip2config.type[i] = EISA;
+			} 
+			ip2config.irq[i] = Eisa_irq;
+			break;
+		}	/* switch */
+	}	/* for */
+	for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		if ( ip2config.addr[i] ) {
+			pB = kmalloc( sizeof(i2eBordStr), GFP_KERNEL);
+			if ( pB != NULL ) {
+				i2BoardPtrTable[i] = pB;
+				memset( pB, 0, sizeof(i2eBordStr) );
+				iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer );
+				iiReset( pB );
+			} else {
+				printk(KERN_ERR "IP2: board memory allocation error\n");
+			}
+		}
+	}
+	for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		if ( ( pB = i2BoardPtrTable[i] ) != NULL ) {
+			iiResetDelay( pB );
+			break;
+		}
+	}
+	for ( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		if ( i2BoardPtrTable[i] != NULL ) {
+			ip2_init_board( i );
+		}
+	}
+
+	ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 );
+
+	ip2_tty_driver->owner		    = THIS_MODULE;
+	ip2_tty_driver->name                 = "ttyF";
+	ip2_tty_driver->devfs_name	    = "tts/F";
+	ip2_tty_driver->driver_name          = pcDriver_name;
+	ip2_tty_driver->major                = IP2_TTY_MAJOR;
+	ip2_tty_driver->minor_start          = 0;
+	ip2_tty_driver->type                 = TTY_DRIVER_TYPE_SERIAL;
+	ip2_tty_driver->subtype              = SERIAL_TYPE_NORMAL;
+	ip2_tty_driver->init_termios         = tty_std_termios;
+	ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
+	ip2_tty_driver->flags                = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+	tty_set_operations(ip2_tty_driver, &ip2_ops);
+
+	ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 );
+
+	/* Register the tty devices. */
+	if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) {
+		printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err);
+		put_tty_driver(ip2_tty_driver);
+		return -EINVAL;
+	} else
+	/* Register the IPL driver. */
+	if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) {
+		printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err );
+	} else {
+		/* create the sysfs class */
+		ip2_class = class_create(THIS_MODULE, "ip2");
+		if (IS_ERR(ip2_class)) {
+			err = PTR_ERR(ip2_class);
+			goto out_chrdev;	
+		}
+	}
+	/* Register the read_procmem thing */
+	if (!create_proc_info_entry("ip2mem",0,&proc_root,ip2_read_procmem)) {
+		printk(KERN_ERR "IP2: failed to register read_procmem\n");
+	} else {
+
+	ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 );
+		/* Register the interrupt handler or poll handler, depending upon the
+		 * specified interrupt.
+		 */
+
+		for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+			if ( 0 == ip2config.addr[i] ) {
+				continue;
+			}
+
+			if ( NULL != ( pB = i2BoardPtrTable[i] ) ) {
+				class_device_create(ip2_class, NULL,
+						MKDEV(IP2_IPL_MAJOR, 4 * i),
+						NULL, "ipl%d", i);
+				err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i),
+						S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR,
+						"ip2/ipl%d", i);
+				if (err) {
+					class_device_destroy(ip2_class,
+						MKDEV(IP2_IPL_MAJOR, 4 * i));
+					goto out_class;
+				}
+
+				class_device_create(ip2_class, NULL,
+						MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
+						NULL, "stat%d", i);
+				err = devfs_mk_cdev(MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
+						S_IRUSR | S_IWUSR | S_IRGRP | S_IFCHR,
+						"ip2/stat%d", i);
+				if (err) {
+					class_device_destroy(ip2_class,
+						MKDEV(IP2_IPL_MAJOR, 4 * i + 1));
+					goto out_class;
+				}
+
+			    for ( box = 0; box < ABS_MAX_BOXES; ++box )
+			    {
+			        for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
+			        {
+				    if ( pB->i2eChannelMap[box] & (1 << j) )
+				    {
+				        tty_register_device(ip2_tty_driver,
+					    j + ABS_BIGGEST_BOX *
+						    (box+i*ABS_MAX_BOXES), NULL);
+			    	    }
+			        }
+			    }
+			}
+
+			if (poll_only) {
+//		Poll only forces driver to only use polling and
+//		to ignore the probed PCI or EISA interrupts.
+				ip2config.irq[i] = CIR_POLL;
+			}
+			if ( ip2config.irq[i] == CIR_POLL ) {
+retry:
+				if (!TimerOn) {
+					PollTimer.expires = POLL_TIMEOUT;
+					add_timer ( &PollTimer );
+					TimerOn = 1;
+					printk( KERN_INFO "IP2: polling\n");
+				}
+			} else {
+				if (have_requested_irq(ip2config.irq[i]))
+					continue;
+				rc = request_irq( ip2config.irq[i], ip2_interrupt,
+					IP2_SA_FLAGS | (ip2config.type[i] == PCI ? SA_SHIRQ : 0),
+					pcName, (void *)&pcName);
+				if (rc) {
+					printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc);
+					ip2config.irq[i] = CIR_POLL;
+					printk( KERN_INFO "IP2: Polling %ld/sec.\n",
+							(POLL_TIMEOUT - jiffies));
+					goto retry;
+				} 
+				mark_requested_irq(ip2config.irq[i]);
+				/* Initialise the interrupt handler bottom half (aka slih). */
+			}
+		}
+		for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+			if ( i2BoardPtrTable[i] ) {
+				set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */
+			}
+		}
+	}
+	ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 );
+	goto out;
+
+out_class:
+	class_destroy(ip2_class);
+out_chrdev:
+	unregister_chrdev(IP2_IPL_MAJOR, "ip2");
+out:
+	return err;
+}
+
+EXPORT_SYMBOL(ip2_loadmain);
+
+/******************************************************************************/
+/* Function:   ip2_init_board()                                               */
+/* Parameters: Index of board in configuration structure                      */
+/* Returns:    Success (0)                                                    */
+/*                                                                            */
+/* Description:                                                               */
+/* This function initializes the specified board. The loadware is copied to   */
+/* the board, the channel structures are initialized, and the board details   */
+/* are reported on the console.                                               */
+/******************************************************************************/
+static void __init
+ip2_init_board( int boardnum )
+{
+	int i;
+	int nports = 0, nboxes = 0;
+	i2ChanStrPtr pCh;
+	i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
+
+	if ( !iiInitialize ( pB ) ) {
+		printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n",
+			 pB->i2eBase, pB->i2eError );
+		goto err_initialize;
+	}
+	printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1,
+	       ip2config.addr[boardnum], ip2config.irq[boardnum] );
+
+	if (!request_region( ip2config.addr[boardnum], 8, pcName )) {
+		printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]);
+		goto err_initialize;
+	}
+
+	if ( iiDownloadAll ( pB, (loadHdrStrPtr)Fip_firmware, 1, Fip_firmware_size )
+	    != II_DOWN_GOOD ) {
+		printk ( KERN_ERR "IP2: failed to download loadware\n" );
+		goto err_release_region;
+	} else {
+		printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n",
+			 pB->i2ePom.e.porVersion,
+			 pB->i2ePom.e.porRevision,
+			 pB->i2ePom.e.porSubRev, pB->i2eLVersion,
+			 pB->i2eLRevision, pB->i2eLSub );
+	}
+
+	switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) {
+
+	default:
+		printk( KERN_ERR "IP2: Unknown board type, ID = %x\n",
+				pB->i2ePom.e.porID );
+		nports = 0;
+		goto err_release_region;
+		break;
+
+	case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */
+		printk ( KERN_INFO "IP2: ISA-4\n" );
+		nports = 4;
+		break;
+
+	case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */
+		printk ( KERN_INFO "IP2: ISA-8 std\n" );
+		nports = 8;
+		break;
+
+	case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */
+		printk ( KERN_INFO "IP2: ISA-8 RJ11\n" );
+		nports = 8;
+		break;
+
+	case POR_ID_FIIEX: /* IntelliPort IIEX */
+	{
+		int portnum = IP2_PORTS_PER_BOARD * boardnum;
+		int            box;
+
+		for( box = 0; box < ABS_MAX_BOXES; ++box ) {
+			if ( pB->i2eChannelMap[box] != 0 ) {
+				++nboxes;
+			}
+			for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
+				if ( pB->i2eChannelMap[box] & 1<< i ) {
+					++nports;
+				}
+			}
+		}
+		DevTableMem[boardnum] = pCh =
+			kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL );
+		if ( !pCh ) {
+			printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
+			goto err_release_region;
+		}
+		if ( !i2InitChannels( pB, nports, pCh ) ) {
+			printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
+			kfree ( pCh );
+			goto err_release_region;
+		}
+		pB->i2eChannelPtr = &DevTable[portnum];
+		pB->i2eChannelCnt = ABS_MOST_PORTS;
+
+		for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) {
+			for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
+				if ( pB->i2eChannelMap[box] & (1 << i) ) {
+					DevTable[portnum + i] = pCh;
+					pCh->port_index = portnum + i;
+					pCh++;
+				}
+			}
+		}
+		printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n",
+			nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 );
+		}
+		goto ex_exit;
+	}
+	DevTableMem[boardnum] = pCh =
+		kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL );
+	if ( !pCh ) {
+		printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
+		goto err_release_region;
+	}
+	pB->i2eChannelPtr = pCh;
+	pB->i2eChannelCnt = nports;
+	if ( !i2InitChannels( pB, nports, pCh ) ) {
+		printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
+		kfree ( pCh );
+		goto err_release_region;
+	}
+	pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum];
+
+	for( i = 0; i < pB->i2eChannelCnt; ++i ) {
+		DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh;
+		pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i;
+		pCh++;
+	}
+ex_exit:
+	INIT_WORK(&pB->tqueue_interrupt, (void(*)(void*)) ip2_interrupt_bh, pB);
+	return;
+
+err_release_region:
+	release_region(ip2config.addr[boardnum], 8);
+err_initialize:
+	kfree ( pB );
+	i2BoardPtrTable[boardnum] = NULL;
+	return;
+}
+
+/******************************************************************************/
+/* Function:   find_eisa_board ( int start_slot )                             */
+/* Parameters: First slot to check                                            */
+/* Returns:    Address of EISA IntelliPort II controller                      */
+/*                                                                            */
+/* Description:                                                               */
+/* This function searches for an EISA IntelliPort controller, starting        */
+/* from the specified slot number. If the motherboard is not identified as an */
+/* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */
+/* it returns the base address of the controller.                             */
+/******************************************************************************/
+static unsigned short __init
+find_eisa_board( int start_slot )
+{
+	int i, j;
+	unsigned int idm = 0;
+	unsigned int idp = 0;
+	unsigned int base = 0;
+	unsigned int value;
+	int setup_address;
+	int setup_irq;
+	int ismine = 0;
+
+	/*
+	 * First a check for an EISA motherboard, which we do by comparing the
+	 * EISA ID registers for the system board and the first couple of slots.
+	 * No slot ID should match the system board ID, but on an ISA or PCI
+	 * machine the odds are that an empty bus will return similar values for
+	 * each slot.
+	 */
+	i = 0x0c80;
+	value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3);
+	for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) {
+		j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3);
+		if ( value == j )
+			return 0;
+	}
+
+	/*
+	 * OK, so we are inclined to believe that this is an EISA machine. Find
+	 * an IntelliPort controller.
+	 */
+	for( i = start_slot; i < 16; i++ ) {
+		base = i << 12;
+		idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff);
+		idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff);
+		ismine = 0;
+		if ( idm == 0x0e8e ) {
+			if ( idp == 0x0281 || idp == 0x0218 ) {
+				ismine = 1;
+			} else if ( idp == 0x0282 || idp == 0x0283 ) {
+				ismine = 3;	/* Can do edge-trigger */
+			}
+			if ( ismine ) {
+				Eisa_slot = i;
+				break;
+			}
+		}
+	}
+	if ( !ismine )
+		return 0;
+
+	/* It's some sort of EISA card, but at what address is it configured? */
+
+	setup_address = base + 0xc88;
+	value = inb(base + 0xc86);
+	setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0;
+
+	if ( (ismine & 2) && !(value & 0x10) ) {
+		ismine = 1;	/* Could be edging, but not */
+	}
+
+	if ( Eisa_irq == 0 ) {
+		Eisa_irq = setup_irq;
+	} else if ( Eisa_irq != setup_irq ) {
+		printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" );
+	}
+
+#ifdef IP2DEBUG_INIT
+printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x",
+	       base >> 12, idm, idp, setup_address);
+	if ( Eisa_irq ) {
+		printk(KERN_DEBUG ", Interrupt %d %s\n",
+		       setup_irq, (ismine & 2) ? "(edge)" : "(level)");
+	} else {
+		printk(KERN_DEBUG ", (polled)\n");
+	}
+#endif
+	return setup_address;
+}
+
+/******************************************************************************/
+/* Function:   set_irq()                                                      */
+/* Parameters: index to board in board table                                  */
+/*             IRQ to use                                                     */
+/* Returns:    Success (0)                                                    */
+/*                                                                            */
+/* Description:                                                               */
+/******************************************************************************/
+static void
+set_irq( int boardnum, int boardIrq )
+{
+	unsigned char tempCommand[16];
+	i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
+	unsigned long flags;
+
+	/*
+	 * Notify the boards they may generate interrupts. This is done by
+	 * sending an in-line command to channel 0 on each board. This is why
+	 * the channels have to be defined already. For each board, if the
+	 * interrupt has never been defined, we must do so NOW, directly, since
+	 * board will not send flow control or even give an interrupt until this
+	 * is done.  If polling we must send 0 as the interrupt parameter.
+	 */
+
+	// We will get an interrupt here at the end of this function
+
+	iiDisableMailIrq(pB);
+
+	/* We build up the entire packet header. */
+	CHANNEL_OF(tempCommand) = 0;
+	PTYPE_OF(tempCommand) = PTYPE_INLINE;
+	CMD_COUNT_OF(tempCommand) = 2;
+	(CMD_OF(tempCommand))[0] = CMDVALUE_IRQ;
+	(CMD_OF(tempCommand))[1] = boardIrq;
+	/*
+	 * Write to FIFO; don't bother to adjust fifo capacity for this, since
+	 * board will respond almost immediately after SendMail hit.
+	 */
+	WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags);
+	iiWriteBuf(pB, tempCommand, 4);
+	WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags);
+	pB->i2eUsingIrq = boardIrq;
+	pB->i2eOutMailWaiting |= MB_OUT_STUFFED;
+
+	/* Need to update number of boards before you enable mailbox int */
+	++i2nBoards;
+
+	CHANNEL_OF(tempCommand) = 0;
+	PTYPE_OF(tempCommand) = PTYPE_BYPASS;
+	CMD_COUNT_OF(tempCommand) = 6;
+	(CMD_OF(tempCommand))[0] = 88;	// SILO
+	(CMD_OF(tempCommand))[1] = 64;	// chars
+	(CMD_OF(tempCommand))[2] = 32;	// ms
+
+	(CMD_OF(tempCommand))[3] = 28;	// MAX_BLOCK
+	(CMD_OF(tempCommand))[4] = 64;	// chars
+
+	(CMD_OF(tempCommand))[5] = 87;	// HW_TEST
+	WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags);
+	iiWriteBuf(pB, tempCommand, 8);
+	WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags);
+
+	CHANNEL_OF(tempCommand) = 0;
+	PTYPE_OF(tempCommand) = PTYPE_BYPASS;
+	CMD_COUNT_OF(tempCommand) = 1;
+	(CMD_OF(tempCommand))[0] = 84;	/* get BOX_IDS */
+	iiWriteBuf(pB, tempCommand, 3);
+
+#ifdef XXX
+	// enable heartbeat for test porpoises
+	CHANNEL_OF(tempCommand) = 0;
+	PTYPE_OF(tempCommand) = PTYPE_BYPASS;
+	CMD_COUNT_OF(tempCommand) = 2;
+	(CMD_OF(tempCommand))[0] = 44;	/* get ping */
+	(CMD_OF(tempCommand))[1] = 200;	/* 200 ms */
+	WRITE_LOCK_IRQSAVE(&pB->write_fifo_spinlock,flags);
+	iiWriteBuf(pB, tempCommand, 4);
+	WRITE_UNLOCK_IRQRESTORE(&pB->write_fifo_spinlock,flags);
+#endif
+
+	iiEnableMailIrq(pB);
+	iiSendPendingMail(pB);
+}
+
+/******************************************************************************/
+/* Interrupt Handler Section                                                  */
+/******************************************************************************/
+
+static inline void
+service_all_boards(void)
+{
+	int i;
+	i2eBordStrPtr  pB;
+
+	/* Service every board on the list */
+	for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		pB = i2BoardPtrTable[i];
+		if ( pB ) {
+			i2ServiceBoard( pB );
+		}
+	}
+}
+
+
+/******************************************************************************/
+/* Function:   ip2_interrupt_bh(pB)                                           */
+/* Parameters: pB - pointer to the board structure                            */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*	Service the board in a bottom half interrupt handler and then         */
+/*	reenable the board's interrupts if it has an IRQ number               */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_interrupt_bh(i2eBordStrPtr pB)
+{
+//	pB better well be set or we have a problem!  We can only get
+//	here from the IMMEDIATE queue.  Here, we process the boards.
+//	Checking pB doesn't cost much and it saves us from the sanity checkers.
+
+	bh_counter++; 
+
+	if ( pB ) {
+		i2ServiceBoard( pB );
+		if( pB->i2eUsingIrq ) {
+//			Re-enable his interrupts
+			iiEnableMailIrq(pB);
+		}
+	}
+}
+
+
+/******************************************************************************/
+/* Function:   ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs)    */
+/* Parameters: irq - interrupt number                                         */
+/*             pointer to optional device ID structure                        */
+/*             pointer to register structure                                  */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*	Our task here is simply to identify each board which needs servicing. */
+/*	If we are queuing then, queue it to be serviced, and disable its irq  */
+/*	mask otherwise process the board directly.                            */
+/*                                                                            */
+/*	We could queue by IRQ but that just complicates things on both ends   */
+/*	with very little gain in performance (how many instructions does      */
+/*	it take to iterate on the immediate queue).                           */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static irqreturn_t
+ip2_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+	int i;
+	i2eBordStrPtr  pB;
+	int handled = 0;
+
+	ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, irq );
+
+	/* Service just the boards on the list using this irq */
+	for( i = 0; i < i2nBoards; ++i ) {
+		pB = i2BoardPtrTable[i];
+
+//		Only process those boards which match our IRQ.
+//			IRQ = 0 for polled boards, we won't poll "IRQ" boards
+
+		if ( pB && (pB->i2eUsingIrq == irq) ) {
+			handled = 1;
+#ifdef USE_IQI
+
+		    if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) {
+//			Disable his interrupt (will be enabled when serviced)
+//			This is mostly to protect from reentrancy.
+			iiDisableMailIrq(pB);
+
+//			Park the board on the immediate queue for processing.
+			schedule_work(&pB->tqueue_interrupt);
+
+//			Make sure the immediate queue is flagged to fire.
+		    }
+#else
+//		We are using immediate servicing here.  This sucks and can
+//		cause all sorts of havoc with ppp and others.  The failsafe
+//		check on iiSendPendingMail could also throw a hairball.
+			i2ServiceBoard( pB );
+#endif /* USE_IQI */
+		}
+	}
+
+	++irq_counter;
+
+	ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
+	return IRQ_RETVAL(handled);
+}
+
+/******************************************************************************/
+/* Function:   ip2_poll(unsigned long arg)                                    */
+/* Parameters: ?                                                              */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/* This function calls the library routine i2ServiceBoard for each board in   */
+/* the board table. This is used instead of the interrupt routine when polled */
+/* mode is specified.                                                         */
+/******************************************************************************/
+static void
+ip2_poll(unsigned long arg)
+{
+	ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 );
+
+	TimerOn = 0; // it's the truth but not checked in service
+
+	// Just polled boards, IRQ = 0 will hit all non-interrupt boards.
+	// It will NOT poll boards handled by hard interrupts.
+	// The issue of queued BH interrups is handled in ip2_interrupt().
+	ip2_interrupt(0, NULL, NULL);
+
+	PollTimer.expires = POLL_TIMEOUT;
+	add_timer( &PollTimer );
+	TimerOn = 1;
+
+	ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
+}
+
+static void do_input(void *p)
+{
+	i2ChanStrPtr pCh = p;
+	unsigned long flags;
+
+	ip2trace(CHANN, ITRC_INPUT, 21, 0 );
+
+	// Data input
+	if ( pCh->pTTY != NULL ) {
+		READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags)
+		if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) {
+			READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
+			i2Input( pCh );
+		} else
+			READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
+	} else {
+		ip2trace(CHANN, ITRC_INPUT, 22, 0 );
+
+		i2InputFlush( pCh );
+	}
+}
+
+// code duplicated from n_tty (ldisc)
+static inline void  isig(int sig, struct tty_struct *tty, int flush)
+{
+	if (tty->pgrp > 0)
+		kill_pg(tty->pgrp, sig, 1);
+	if (flush || !L_NOFLSH(tty)) {
+		if ( tty->ldisc.flush_buffer )  
+			tty->ldisc.flush_buffer(tty);
+		i2InputFlush( tty->driver_data );
+	}
+}
+
+static void do_status(void *p)
+{
+	i2ChanStrPtr pCh = p;
+	int status;
+
+	status =  i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) );
+
+	ip2trace (CHANN, ITRC_STATUS, 21, 1, status );
+
+	if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) {
+		if ( (status & I2_BRK) ) {
+			// code duplicated from n_tty (ldisc)
+			if (I_IGNBRK(pCh->pTTY))
+				goto skip_this;
+			if (I_BRKINT(pCh->pTTY)) {
+				isig(SIGINT, pCh->pTTY, 1);
+				goto skip_this;
+			}
+			wake_up_interruptible(&pCh->pTTY->read_wait);
+		}
+#ifdef NEVER_HAPPENS_AS_SETUP_XXX
+	// and can't work because we don't know the_char
+	// as the_char is reported on a separate path
+	// The intelligent board does this stuff as setup
+	{
+	char brkf = TTY_NORMAL;
+	unsigned char brkc = '\0';
+	unsigned char tmp;
+		if ( (status & I2_BRK) ) {
+			brkf = TTY_BREAK;
+			brkc = '\0';
+		} 
+		else if (status & I2_PAR) {
+			brkf = TTY_PARITY;
+			brkc = the_char;
+		} else if (status & I2_FRA) {
+			brkf = TTY_FRAME;
+			brkc = the_char;
+		} else if (status & I2_OVR) {
+			brkf = TTY_OVERRUN;
+			brkc = the_char;
+		}
+		tmp = pCh->pTTY->real_raw;
+		pCh->pTTY->real_raw = 0;
+		pCh->pTTY->ldisc.receive_buf( pCh->pTTY, &brkc, &brkf, 1 );
+		pCh->pTTY->real_raw = tmp;
+	}
+#endif /* NEVER_HAPPENS_AS_SETUP_XXX */
+	}
+skip_this:
+
+	if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) {
+		wake_up_interruptible(&pCh->delta_msr_wait);
+
+		if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) {
+			if ( status & I2_DCD ) {
+				if ( pCh->wopen ) {
+					wake_up_interruptible ( &pCh->open_wait );
+				}
+			} else {
+				if (pCh->pTTY &&  (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) {
+					tty_hangup( pCh->pTTY );
+				}
+			}
+		}
+	}
+
+	ip2trace (CHANN, ITRC_STATUS, 26, 0 );
+}
+
+/******************************************************************************/
+/* Device Open/Close/Ioctl Entry Point Section                                */
+/******************************************************************************/
+
+/******************************************************************************/
+/* Function:   open_sanity_check()                                            */
+/* Parameters: Pointer to tty structure                                       */
+/*             Pointer to file structure                                      */
+/* Returns:    Success or failure                                             */
+/*                                                                            */
+/* Description:                                                               */
+/* Verifies the structure magic numbers and cross links.                      */
+/******************************************************************************/
+#ifdef IP2DEBUG_OPEN
+static void 
+open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd )
+{
+	if ( pBrd->i2eValid != I2E_MAGIC ) {
+		printk(KERN_ERR "IP2: invalid board structure\n" );
+	} else if ( pBrd != pCh->pMyBord ) {
+		printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n",
+			 pCh->pMyBord );
+	} else if ( pBrd->i2eChannelCnt < pCh->port_index ) {
+		printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index );
+	} else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) {
+	} else {
+		printk(KERN_INFO "IP2: all pointers check out!\n" );
+	}
+}
+#endif
+
+
+/******************************************************************************/
+/* Function:   ip2_open()                                                     */
+/* Parameters: Pointer to tty structure                                       */
+/*             Pointer to file structure                                      */
+/* Returns:    Success or failure                                             */
+/*                                                                            */
+/* Description: (MANDATORY)                                                   */
+/* A successful device open has to run a gauntlet of checks before it         */
+/* completes. After some sanity checking and pointer setup, the function      */
+/* blocks until all conditions are satisfied. It then initialises the port to */
+/* the default characteristics and returns.                                   */
+/******************************************************************************/
+static int
+ip2_open( PTTY tty, struct file *pFile )
+{
+	wait_queue_t wait;
+	int rc = 0;
+	int do_clocal = 0;
+	i2ChanStrPtr  pCh = DevTable[tty->index];
+
+	ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 );
+
+	if ( pCh == NULL ) {
+		return -ENODEV;
+	}
+	/* Setup pointer links in device and tty structures */
+	pCh->pTTY = tty;
+	tty->driver_data = pCh;
+
+#ifdef IP2DEBUG_OPEN
+	printk(KERN_DEBUG \
+			"IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n",
+	       tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index);
+	open_sanity_check ( pCh, pCh->pMyBord );
+#endif
+
+	i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP);
+	pCh->dataSetOut |= (I2_DTR | I2_RTS);
+	serviceOutgoingFifo( pCh->pMyBord );
+
+	/* Block here until the port is ready (per serial and istallion) */
+	/*
+	 * 1. If the port is in the middle of closing wait for the completion
+	 *    and then return the appropriate error.
+	 */
+	init_waitqueue_entry(&wait, current);
+	add_wait_queue(&pCh->close_wait, &wait);
+	set_current_state( TASK_INTERRUPTIBLE );
+
+	if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) {
+		if ( pCh->flags & ASYNC_CLOSING ) {
+			schedule();
+		}
+		if ( tty_hung_up_p(pFile) ) {
+			set_current_state( TASK_RUNNING );
+			remove_wait_queue(&pCh->close_wait, &wait);
+			return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS;
+		}
+	}
+	set_current_state( TASK_RUNNING );
+	remove_wait_queue(&pCh->close_wait, &wait);
+
+	/*
+	 * 3. Handle a non-blocking open of a normal port.
+	 */
+	if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) {
+		pCh->flags |= ASYNC_NORMAL_ACTIVE;
+		goto noblock;
+	}
+	/*
+	 * 4. Now loop waiting for the port to be free and carrier present
+	 *    (if required).
+	 */
+	if ( tty->termios->c_cflag & CLOCAL )
+		do_clocal = 1;
+
+#ifdef IP2DEBUG_OPEN
+	printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal);
+#endif
+
+	++pCh->wopen;
+
+	init_waitqueue_entry(&wait, current);
+	add_wait_queue(&pCh->open_wait, &wait);
+
+	for(;;) {
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
+		pCh->dataSetOut |= (I2_DTR | I2_RTS);
+		set_current_state( TASK_INTERRUPTIBLE );
+		serviceOutgoingFifo( pCh->pMyBord );
+		if ( tty_hung_up_p(pFile) ) {
+			set_current_state( TASK_RUNNING );
+			remove_wait_queue(&pCh->open_wait, &wait);
+			return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS;
+		}
+		if (!(pCh->flags & ASYNC_CLOSING) && 
+				(do_clocal || (pCh->dataSetIn & I2_DCD) )) {
+			rc = 0;
+			break;
+		}
+
+#ifdef IP2DEBUG_OPEN
+		printk(KERN_DEBUG "ASYNC_CLOSING = %s\n",
+			(pCh->flags & ASYNC_CLOSING)?"True":"False");
+		printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n");
+#endif
+		ip2trace (CHANN, ITRC_OPEN, 3, 2, 0,
+				(pCh->flags & ASYNC_CLOSING) );
+		/* check for signal */
+		if (signal_pending(current)) {
+			rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS);
+			break;
+		}
+		schedule();
+	}
+	set_current_state( TASK_RUNNING );
+	remove_wait_queue(&pCh->open_wait, &wait);
+
+	--pCh->wopen; //why count?
+
+	ip2trace (CHANN, ITRC_OPEN, 4, 0 );
+
+	if (rc != 0 ) {
+		return rc;
+	}
+	pCh->flags |= ASYNC_NORMAL_ACTIVE;
+
+noblock:
+
+	/* first open - Assign termios structure to port */
+	if ( tty->count == 1 ) {
+		i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
+		/* Now we must send the termios settings to the loadware */
+		set_params( pCh, NULL );
+	}
+
+	/*
+	 * Now set any i2lib options. These may go away if the i2lib code ends
+	 * up rolled into the mainline.
+	 */
+	pCh->channelOptions |= CO_NBLOCK_WRITE;
+
+#ifdef IP2DEBUG_OPEN
+	printk (KERN_DEBUG "IP2: open completed\n" );
+#endif
+	serviceOutgoingFifo( pCh->pMyBord );
+
+	ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 );
+
+	return 0;
+}
+
+/******************************************************************************/
+/* Function:   ip2_close()                                                    */
+/* Parameters: Pointer to tty structure                                       */
+/*             Pointer to file structure                                      */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_close( PTTY tty, struct file *pFile )
+{
+	i2ChanStrPtr  pCh = tty->driver_data;
+
+	if ( !pCh ) {
+		return;
+	}
+
+	ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 );
+
+#ifdef IP2DEBUG_OPEN
+	printk(KERN_DEBUG "IP2:close %s:\n",tty->name);
+#endif
+
+	if ( tty_hung_up_p ( pFile ) ) {
+
+		ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 );
+
+		return;
+	}
+	if ( tty->count > 1 ) { /* not the last close */
+
+		ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 );
+
+		return;
+	}
+	pCh->flags |= ASYNC_CLOSING;	// last close actually
+
+	tty->closing = 1;
+
+	if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) {
+		/*
+		 * Before we drop DTR, make sure the transmitter has completely drained.
+		 * This uses an timeout, after which the close
+		 * completes.
+		 */
+		ip2_wait_until_sent(tty, pCh->ClosingWaitTime );
+	}
+	/*
+	 * At this point we stop accepting input. Here we flush the channel
+	 * input buffer which will allow the board to send up more data. Any
+	 * additional input is tossed at interrupt/poll time.
+	 */
+	i2InputFlush( pCh );
+
+	/* disable DSS reporting */
+	i2QueueCommands(PTYPE_INLINE, pCh, 100, 4,
+				CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
+	if ( !tty || (tty->termios->c_cflag & HUPCL) ) {
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
+		pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
+		i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
+	}
+
+	serviceOutgoingFifo ( pCh->pMyBord );
+
+	if ( tty->driver->flush_buffer ) 
+		tty->driver->flush_buffer(tty);
+	if ( tty->ldisc.flush_buffer )  
+		tty->ldisc.flush_buffer(tty);
+	tty->closing = 0;
+	
+	pCh->pTTY = NULL;
+
+	if (pCh->wopen) {
+		if (pCh->ClosingDelay) {
+			msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay));
+		}
+		wake_up_interruptible(&pCh->open_wait);
+	}
+
+	pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
+	wake_up_interruptible(&pCh->close_wait);
+
+#ifdef IP2DEBUG_OPEN
+	DBG_CNT("ip2_close: after wakeups--");
+#endif
+
+
+	ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 );
+
+	return;
+}
+
+/******************************************************************************/
+/* Function:   ip2_hangup()                                                   */
+/* Parameters: Pointer to tty structure                                       */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_hangup ( PTTY tty )
+{
+	i2ChanStrPtr  pCh = tty->driver_data;
+
+	if( !pCh ) {
+		return;
+	}
+
+	ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 );
+
+	ip2_flush_buffer(tty);
+
+	/* disable DSS reporting */
+
+	i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP);
+	i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
+	if ( (tty->termios->c_cflag & HUPCL) ) {
+		i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN);
+		pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
+		i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
+	}
+	i2QueueCommands(PTYPE_INLINE, pCh, 1, 3, 
+				CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
+	serviceOutgoingFifo ( pCh->pMyBord );
+
+	wake_up_interruptible ( &pCh->delta_msr_wait );
+
+	pCh->flags &= ~ASYNC_NORMAL_ACTIVE;
+	pCh->pTTY = NULL;
+	wake_up_interruptible ( &pCh->open_wait );
+
+	ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 );
+}
+
+/******************************************************************************/
+/******************************************************************************/
+/* Device Output Section                                                      */
+/******************************************************************************/
+/******************************************************************************/
+
+/******************************************************************************/
+/* Function:   ip2_write()                                                    */
+/* Parameters: Pointer to tty structure                                       */
+/*             Flag denoting data is in user (1) or kernel (0) space          */
+/*             Pointer to data                                                */
+/*             Number of bytes to write                                       */
+/* Returns:    Number of bytes actually written                               */
+/*                                                                            */
+/* Description: (MANDATORY)                                                   */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static int
+ip2_write( PTTY tty, const unsigned char *pData, int count)
+{
+	i2ChanStrPtr  pCh = tty->driver_data;
+	int bytesSent = 0;
+	unsigned long flags;
+
+	ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 );
+
+	/* Flush out any buffered data left over from ip2_putchar() calls. */
+	ip2_flush_chars( tty );
+
+	/* This is the actual move bit. Make sure it does what we need!!!!! */
+	WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+	bytesSent = i2Output( pCh, pData, count, 0 );
+	WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+
+	ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent );
+
+	return bytesSent > 0 ? bytesSent : 0;
+}
+
+/******************************************************************************/
+/* Function:   ip2_putchar()                                                  */
+/* Parameters: Pointer to tty structure                                       */
+/*             Character to write                                             */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_putchar( PTTY tty, unsigned char ch )
+{
+	i2ChanStrPtr  pCh = tty->driver_data;
+	unsigned long flags;
+
+//	ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch );
+
+	WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+	pCh->Pbuf[pCh->Pbuf_stuff++] = ch;
+	if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) {
+		WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+		ip2_flush_chars( tty );
+	} else
+		WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+
+//	ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch );
+}
+
+/******************************************************************************/
+/* Function:   ip2_flush_chars()                                              */
+/* Parameters: Pointer to tty structure                                       */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_flush_chars( PTTY tty )
+{
+	int   strip;
+	i2ChanStrPtr  pCh = tty->driver_data;
+	unsigned long flags;
+
+	WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+	if ( pCh->Pbuf_stuff ) {
+
+//		ip2trace (CHANN, ITRC_PUTC, 10, 1, strip );
+
+		//
+		// We may need to restart i2Output if it does not fullfill this request
+		//
+		strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff, 0 );
+		if ( strip != pCh->Pbuf_stuff ) {
+			memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip );
+		}
+		pCh->Pbuf_stuff -= strip;
+	}
+	WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+}
+
+/******************************************************************************/
+/* Function:   ip2_write_room()                                               */
+/* Parameters: Pointer to tty structure                                       */
+/* Returns:    Number of bytes that the driver can accept                     */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/******************************************************************************/
+static int
+ip2_write_room ( PTTY tty )
+{
+	int bytesFree;
+	i2ChanStrPtr  pCh = tty->driver_data;
+	unsigned long flags;
+
+	READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+	bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff;
+	READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+
+	ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree );
+
+	return ((bytesFree > 0) ? bytesFree : 0);
+}
+
+/******************************************************************************/
+/* Function:   ip2_chars_in_buf()                                             */
+/* Parameters: Pointer to tty structure                                       */
+/* Returns:    Number of bytes queued for transmission                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static int
+ip2_chars_in_buf ( PTTY tty )
+{
+	i2ChanStrPtr  pCh = tty->driver_data;
+	int rc;
+	unsigned long flags;
+
+	ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff );
+
+#ifdef IP2DEBUG_WRITE
+	printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n",
+				 pCh->Obuf_char_count + pCh->Pbuf_stuff,
+				 pCh->Obuf_char_count, pCh->Pbuf_stuff );
+#endif
+	READ_LOCK_IRQSAVE(&pCh->Obuf_spinlock,flags);
+	rc =  pCh->Obuf_char_count;
+	READ_UNLOCK_IRQRESTORE(&pCh->Obuf_spinlock,flags);
+	READ_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+	rc +=  pCh->Pbuf_stuff;
+	READ_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+	return rc;
+}
+
+/******************************************************************************/
+/* Function:   ip2_flush_buffer()                                             */
+/* Parameters: Pointer to tty structure                                       */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_flush_buffer( PTTY tty )
+{
+	i2ChanStrPtr  pCh = tty->driver_data;
+	unsigned long flags;
+
+	ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 );
+
+#ifdef IP2DEBUG_WRITE
+	printk (KERN_DEBUG "IP2: flush buffer\n" );
+#endif
+	WRITE_LOCK_IRQSAVE(&pCh->Pbuf_spinlock,flags);
+	pCh->Pbuf_stuff = 0;
+	WRITE_UNLOCK_IRQRESTORE(&pCh->Pbuf_spinlock,flags);
+	i2FlushOutput( pCh );
+	ip2_owake(tty);
+
+	ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 );
+
+}
+
+/******************************************************************************/
+/* Function:   ip2_wait_until_sent()                                          */
+/* Parameters: Pointer to tty structure                                       */
+/*             Timeout for wait.                                              */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/* This function is used in place of the normal tty_wait_until_sent, which    */
+/* only waits for the driver buffers to be empty (or rather, those buffers    */
+/* reported by chars_in_buffer) which doesn't work for IP2 due to the         */
+/* indeterminate number of bytes buffered on the board.                       */
+/******************************************************************************/
+static void
+ip2_wait_until_sent ( PTTY tty, int timeout )
+{
+	int i = jiffies;
+	i2ChanStrPtr  pCh = tty->driver_data;
+
+	tty_wait_until_sent(tty, timeout );
+	if ( (i = timeout - (jiffies -i)) > 0)
+		i2DrainOutput( pCh, i );
+}
+
+/******************************************************************************/
+/******************************************************************************/
+/* Device Input Section                                                       */
+/******************************************************************************/
+/******************************************************************************/
+
+/******************************************************************************/
+/* Function:   ip2_throttle()                                                 */
+/* Parameters: Pointer to tty structure                                       */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_throttle ( PTTY tty )
+{
+	i2ChanStrPtr  pCh = tty->driver_data;
+
+#ifdef IP2DEBUG_READ
+	printk (KERN_DEBUG "IP2: throttle\n" );
+#endif
+	/*
+	 * Signal the poll/interrupt handlers not to forward incoming data to
+	 * the line discipline. This will cause the buffers to fill up in the
+	 * library and thus cause the library routines to send the flow control
+	 * stuff.
+	 */
+	pCh->throttled = 1;
+}
+
+/******************************************************************************/
+/* Function:   ip2_unthrottle()                                               */
+/* Parameters: Pointer to tty structure                                       */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_unthrottle ( PTTY tty )
+{
+	i2ChanStrPtr  pCh = tty->driver_data;
+	unsigned long flags;
+
+#ifdef IP2DEBUG_READ
+	printk (KERN_DEBUG "IP2: unthrottle\n" );
+#endif
+
+	/* Pass incoming data up to the line discipline again. */
+	pCh->throttled = 0;
+ 	i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
+	serviceOutgoingFifo( pCh->pMyBord );
+	READ_LOCK_IRQSAVE(&pCh->Ibuf_spinlock,flags)
+	if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) {
+		READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
+#ifdef IP2DEBUG_READ
+		printk (KERN_DEBUG "i2Input called from unthrottle\n" );
+#endif
+		i2Input( pCh );
+	} else
+		READ_UNLOCK_IRQRESTORE(&pCh->Ibuf_spinlock,flags)
+}
+
+static void
+ip2_start ( PTTY tty )
+{
+ 	i2ChanStrPtr  pCh = DevTable[tty->index];
+
+ 	i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
+ 	i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND);
+ 	i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME);
+#ifdef IP2DEBUG_WRITE
+	printk (KERN_DEBUG "IP2: start tx\n" );
+#endif
+}
+
+static void
+ip2_stop ( PTTY tty )
+{
+ 	i2ChanStrPtr  pCh = DevTable[tty->index];
+
+ 	i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND);
+#ifdef IP2DEBUG_WRITE
+	printk (KERN_DEBUG "IP2: stop tx\n" );
+#endif
+}
+
+/******************************************************************************/
+/* Device Ioctl Section                                                       */
+/******************************************************************************/
+
+static int ip2_tiocmget(struct tty_struct *tty, struct file *file)
+{
+	i2ChanStrPtr pCh = DevTable[tty->index];
+#ifdef	ENABLE_DSSNOW
+	wait_queue_t wait;
+#endif
+
+	if (pCh == NULL)
+		return -ENODEV;
+
+/*
+	FIXME - the following code is causing a NULL pointer dereference in
+	2.3.51 in an interrupt handler.  It's suppose to prompt the board
+	to return the DSS signal status immediately.  Why doesn't it do
+	the same thing in 2.2.14?
+*/
+
+/*	This thing is still busted in the 1.2.12 driver on 2.4.x
+	and even hoses the serial console so the oops can be trapped.
+		/\/\|=mhw=|\/\/			*/
+
+#ifdef	ENABLE_DSSNOW
+	i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW);
+
+	init_waitqueue_entry(&wait, current);
+	add_wait_queue(&pCh->dss_now_wait, &wait);
+	set_current_state( TASK_INTERRUPTIBLE );
+
+	serviceOutgoingFifo( pCh->pMyBord );
+
+	schedule();
+
+	set_current_state( TASK_RUNNING );
+	remove_wait_queue(&pCh->dss_now_wait, &wait);
+
+	if (signal_pending(current)) {
+		return -EINTR;
+	}
+#endif
+	return  ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0)
+	      | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0)
+	      | ((pCh->dataSetIn  & I2_DCD) ? TIOCM_CAR : 0)
+	      | ((pCh->dataSetIn  & I2_RI)  ? TIOCM_RNG : 0)
+	      | ((pCh->dataSetIn  & I2_DSR) ? TIOCM_DSR : 0)
+	      | ((pCh->dataSetIn  & I2_CTS) ? TIOCM_CTS : 0);
+}
+
+static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
+			unsigned int set, unsigned int clear)
+{
+	i2ChanStrPtr pCh = DevTable[tty->index];
+
+	if (pCh == NULL)
+		return -ENODEV;
+
+	if (set & TIOCM_RTS) {
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP);
+		pCh->dataSetOut |= I2_RTS;
+	}
+	if (set & TIOCM_DTR) {
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP);
+		pCh->dataSetOut |= I2_DTR;
+	}
+
+	if (clear & TIOCM_RTS) {
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN);
+		pCh->dataSetOut &= ~I2_RTS;
+	}
+	if (clear & TIOCM_DTR) {
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN);
+		pCh->dataSetOut &= ~I2_DTR;
+	}
+	serviceOutgoingFifo( pCh->pMyBord );
+	return 0;
+}
+
+/******************************************************************************/
+/* Function:   ip2_ioctl()                                                    */
+/* Parameters: Pointer to tty structure                                       */
+/*             Pointer to file structure                                      */
+/*             Command                                                        */
+/*             Argument                                                       */
+/* Returns:    Success or failure                                             */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static int
+ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg )
+{
+	wait_queue_t wait;
+	i2ChanStrPtr pCh = DevTable[tty->index];
+	i2eBordStrPtr pB;
+	struct async_icount cprev, cnow;	/* kernel counter temps */
+	struct serial_icounter_struct __user *p_cuser;
+	int rc = 0;
+	unsigned long flags;
+	void __user *argp = (void __user *)arg;
+
+	if ( pCh == NULL )
+		return -ENODEV;
+
+	pB = pCh->pMyBord;
+
+	ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg );
+
+#ifdef IP2DEBUG_IOCTL
+	printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg );
+#endif
+
+	switch(cmd) {
+	case TIOCGSERIAL:
+
+		ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc );
+
+		rc = get_serial_info(pCh, argp);
+		if (rc)
+			return rc;
+		break;
+
+	case TIOCSSERIAL:
+
+		ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc );
+
+		rc = set_serial_info(pCh, argp);
+		if (rc)
+			return rc;
+		break;
+
+	case TCXONC:
+		rc = tty_check_change(tty);
+		if (rc)
+			return rc;
+		switch (arg) {
+		case TCOOFF:
+			//return  -ENOIOCTLCMD;
+			break;
+		case TCOON:
+			//return  -ENOIOCTLCMD;
+			break;
+		case TCIOFF:
+			if (STOP_CHAR(tty) != __DISABLED_CHAR) {
+				i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
+						CMD_XMIT_NOW(STOP_CHAR(tty)));
+			}
+			break;
+		case TCION:
+			if (START_CHAR(tty) != __DISABLED_CHAR) {
+				i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
+						CMD_XMIT_NOW(START_CHAR(tty)));
+			}
+			break;
+		default:
+			return -EINVAL;
+		}
+		return 0;
+
+	case TCSBRK:   /* SVID version: non-zero arg --> no break */
+		rc = tty_check_change(tty);
+
+		ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc );
+
+		if (!rc) {
+			ip2_wait_until_sent(tty,0);
+			if (!arg) {
+				i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250));
+				serviceOutgoingFifo( pCh->pMyBord );
+			}
+		}
+		break;
+
+	case TCSBRKP:  /* support for POSIX tcsendbreak() */
+		rc = tty_check_change(tty);
+
+		ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc );
+
+		if (!rc) {
+			ip2_wait_until_sent(tty,0);
+			i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
+				CMD_SEND_BRK(arg ? arg*100 : 250));
+			serviceOutgoingFifo ( pCh->pMyBord );	
+		}
+		break;
+
+	case TIOCGSOFTCAR:
+
+		ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc );
+
+			rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
+		if (rc)	
+			return rc;
+	break;
+
+	case TIOCSSOFTCAR:
+
+		ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc );
+
+		rc = get_user(arg,(unsigned long __user *) argp);
+		if (rc) 
+			return rc;
+		tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL)
+					 | (arg ? CLOCAL : 0));
+		
+		break;
+
+	/*
+	 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask
+	 * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS
+	 * for masking). Caller should use TIOCGICOUNT to see which one it was
+	 */
+	case TIOCMIWAIT:
+		WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags);
+		cprev = pCh->icount;	 /* note the counters on entry */
+		WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags);
+		i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4, 
+						CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP);
+		init_waitqueue_entry(&wait, current);
+		add_wait_queue(&pCh->delta_msr_wait, &wait);
+		set_current_state( TASK_INTERRUPTIBLE );
+
+		serviceOutgoingFifo( pCh->pMyBord );
+		for(;;) {
+			ip2trace (CHANN, ITRC_IOCTL, 10, 0 );
+
+			schedule();
+
+			ip2trace (CHANN, ITRC_IOCTL, 11, 0 );
+
+			/* see if a signal did it */
+			if (signal_pending(current)) {
+				rc = -ERESTARTSYS;
+				break;
+			}
+			WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags);
+			cnow = pCh->icount; /* atomic copy */
+			WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags);
+			if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
+				cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
+				rc =  -EIO; /* no change => rc */
+				break;
+			}
+			if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
+			    ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
+			    ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
+			    ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
+				rc =  0;
+				break;
+			}
+			cprev = cnow;
+		}
+		set_current_state( TASK_RUNNING );
+		remove_wait_queue(&pCh->delta_msr_wait, &wait);
+
+		i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3, 
+						 CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
+		if ( ! (pCh->flags	& ASYNC_CHECK_CD)) {
+			i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP);
+		}
+		serviceOutgoingFifo( pCh->pMyBord );
+		return rc;
+		break;
+
+	/*
+	 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
+	 * Return: write counters to the user passed counter struct
+	 * NB: both 1->0 and 0->1 transitions are counted except for RI where
+	 * only 0->1 is counted. The controller is quite capable of counting
+	 * both, but this done to preserve compatibility with the standard
+	 * serial driver.
+	 */
+	case TIOCGICOUNT:
+		ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc );
+
+		WRITE_LOCK_IRQSAVE(&pB->read_fifo_spinlock, flags);
+		cnow = pCh->icount;
+		WRITE_UNLOCK_IRQRESTORE(&pB->read_fifo_spinlock, flags);
+		p_cuser = argp;
+		rc = put_user(cnow.cts, &p_cuser->cts);
+		rc = put_user(cnow.dsr, &p_cuser->dsr);
+		rc = put_user(cnow.rng, &p_cuser->rng);
+		rc = put_user(cnow.dcd, &p_cuser->dcd);
+		rc = put_user(cnow.rx, &p_cuser->rx);
+		rc = put_user(cnow.tx, &p_cuser->tx);
+		rc = put_user(cnow.frame, &p_cuser->frame);
+		rc = put_user(cnow.overrun, &p_cuser->overrun);
+		rc = put_user(cnow.parity, &p_cuser->parity);
+		rc = put_user(cnow.brk, &p_cuser->brk);
+		rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
+		break;
+
+	/*
+	 * The rest are not supported by this driver. By returning -ENOIOCTLCMD they
+	 * will be passed to the line discipline for it to handle.
+	 */
+	case TIOCSERCONFIG:
+	case TIOCSERGWILD:
+	case TIOCSERGETLSR:
+	case TIOCSERSWILD:
+	case TIOCSERGSTRUCT:
+	case TIOCSERGETMULTI:
+	case TIOCSERSETMULTI:
+
+	default:
+		ip2trace (CHANN, ITRC_IOCTL, 12, 0 );
+
+		rc =  -ENOIOCTLCMD;
+		break;
+	}
+
+	ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 );
+
+	return rc;
+}
+
+/******************************************************************************/
+/* Function:   GetSerialInfo()                                                */
+/* Parameters: Pointer to channel structure                                   */
+/*             Pointer to old termios structure                               */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/* This is to support the setserial command, and requires processing of the   */
+/* standard Linux serial structure.                                           */
+/******************************************************************************/
+static int
+get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo )
+{
+	struct serial_struct tmp;
+
+	memset ( &tmp, 0, sizeof(tmp) );
+	tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16];
+	if (BID_HAS_654(tmp.type)) {
+		tmp.type = PORT_16650;
+	} else {
+		tmp.type = PORT_CIRRUS;
+	}
+	tmp.line = pCh->port_index;
+	tmp.port = pCh->pMyBord->i2eBase;
+	tmp.irq  = ip2config.irq[pCh->port_index/64];
+	tmp.flags = pCh->flags;
+	tmp.baud_base = pCh->BaudBase;
+	tmp.close_delay = pCh->ClosingDelay;
+	tmp.closing_wait = pCh->ClosingWaitTime;
+	tmp.custom_divisor = pCh->BaudDivisor;
+   	return copy_to_user(retinfo,&tmp,sizeof(*retinfo));
+}
+
+/******************************************************************************/
+/* Function:   SetSerialInfo()                                                */
+/* Parameters: Pointer to channel structure                                   */
+/*             Pointer to old termios structure                               */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/* This function provides support for setserial, which uses the TIOCSSERIAL   */
+/* ioctl. Not all setserial parameters are relevant. If the user attempts to  */
+/* change the IRQ, address or type of the port the ioctl fails.               */
+/******************************************************************************/
+static int
+set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info )
+{
+	struct serial_struct ns;
+	int   old_flags, old_baud_divisor;
+
+	if (copy_from_user(&ns, new_info, sizeof (ns)))
+		return -EFAULT;
+
+	/*
+	 * We don't allow setserial to change IRQ, board address, type or baud
+	 * base. Also line nunber as such is meaningless but we use it for our
+	 * array index so it is fixed also.
+	 */
+	if ( (ns.irq  	    != ip2config.irq[pCh->port_index])
+	    || ((int) ns.port      != ((int) (pCh->pMyBord->i2eBase)))
+	    || (ns.baud_base != pCh->BaudBase)
+	    || (ns.line      != pCh->port_index) ) {
+		return -EINVAL;
+	}
+
+	old_flags = pCh->flags;
+	old_baud_divisor = pCh->BaudDivisor;
+
+	if ( !capable(CAP_SYS_ADMIN) ) {
+		if ( ( ns.close_delay != pCh->ClosingDelay ) ||
+		    ( (ns.flags & ~ASYNC_USR_MASK) !=
+		      (pCh->flags & ~ASYNC_USR_MASK) ) ) {
+			return -EPERM;
+		}
+
+		pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) |
+			       (ns.flags & ASYNC_USR_MASK);
+		pCh->BaudDivisor = ns.custom_divisor;
+	} else {
+		pCh->flags = (pCh->flags & ~ASYNC_FLAGS) |
+			       (ns.flags & ASYNC_FLAGS);
+		pCh->BaudDivisor = ns.custom_divisor;
+		pCh->ClosingDelay = ns.close_delay * HZ/100;
+		pCh->ClosingWaitTime = ns.closing_wait * HZ/100;
+	}
+
+	if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) )
+	    || (old_baud_divisor != pCh->BaudDivisor) ) {
+		// Invalidate speed and reset parameters
+		set_params( pCh, NULL );
+	}
+
+	return 0;
+}
+
+/******************************************************************************/
+/* Function:   ip2_set_termios()                                              */
+/* Parameters: Pointer to tty structure                                       */
+/*             Pointer to old termios structure                               */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_set_termios( PTTY tty, struct termios *old_termios )
+{
+	i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data;
+
+#ifdef IP2DEBUG_IOCTL
+	printk (KERN_DEBUG "IP2: set termios %p\n", old_termios );
+#endif
+
+	set_params( pCh, old_termios );
+}
+
+/******************************************************************************/
+/* Function:   ip2_set_line_discipline()                                      */
+/* Parameters: Pointer to tty structure                                       */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:  Does nothing                                                 */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static void
+ip2_set_line_discipline ( PTTY tty )
+{
+#ifdef IP2DEBUG_IOCTL
+	printk (KERN_DEBUG "IP2: set line discipline\n" );
+#endif
+
+	ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 );
+
+}
+
+/******************************************************************************/
+/* Function:   SetLine Characteristics()                                      */
+/* Parameters: Pointer to channel structure                                   */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/* This routine is called to update the channel structure with the new line   */
+/* characteristics, and send the appropriate commands to the board when they  */
+/* change.                                                                    */
+/******************************************************************************/
+static void
+set_params( i2ChanStrPtr pCh, struct termios *o_tios )
+{
+	tcflag_t cflag, iflag, lflag;
+	char stop_char, start_char;
+	struct termios dummy;
+
+	lflag = pCh->pTTY->termios->c_lflag;
+	cflag = pCh->pTTY->termios->c_cflag;
+	iflag = pCh->pTTY->termios->c_iflag;
+
+	if (o_tios == NULL) {
+		dummy.c_lflag = ~lflag;
+		dummy.c_cflag = ~cflag;
+		dummy.c_iflag = ~iflag;
+		o_tios = &dummy;
+	}
+
+	{
+		switch ( cflag & CBAUD ) {
+		case B0:
+			i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
+			pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
+			i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
+			pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag);
+			goto service_it;
+			break;
+		case B38400:
+			/*
+			 * This is the speed that is overloaded with all the other high
+			 * speeds, depending upon the flag settings.
+			 */
+			if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) {
+				pCh->speed = CBR_57600;
+			} else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) {
+				pCh->speed = CBR_115200;
+			} else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) {
+				pCh->speed = CBR_C1;
+			} else {
+				pCh->speed = CBR_38400;
+			}
+			break;
+		case B50:      pCh->speed = CBR_50;      break;
+		case B75:      pCh->speed = CBR_75;      break;
+		case B110:     pCh->speed = CBR_110;     break;
+		case B134:     pCh->speed = CBR_134;     break;
+		case B150:     pCh->speed = CBR_150;     break;
+		case B200:     pCh->speed = CBR_200;     break;
+		case B300:     pCh->speed = CBR_300;     break;
+		case B600:     pCh->speed = CBR_600;     break;
+		case B1200:    pCh->speed = CBR_1200;    break;
+		case B1800:    pCh->speed = CBR_1800;    break;
+		case B2400:    pCh->speed = CBR_2400;    break;
+		case B4800:    pCh->speed = CBR_4800;    break;
+		case B9600:    pCh->speed = CBR_9600;    break;
+		case B19200:   pCh->speed = CBR_19200;   break;
+		case B57600:   pCh->speed = CBR_57600;   break;
+		case B115200:  pCh->speed = CBR_115200;  break;
+		case B153600:  pCh->speed = CBR_153600;  break;
+		case B230400:  pCh->speed = CBR_230400;  break;
+		case B307200:  pCh->speed = CBR_307200;  break;
+		case B460800:  pCh->speed = CBR_460800;  break;
+		case B921600:  pCh->speed = CBR_921600;  break;
+		default:       pCh->speed = CBR_9600;    break;
+		}
+		if ( pCh->speed == CBR_C1 ) {
+			// Process the custom speed parameters.
+			int bps = pCh->BaudBase / pCh->BaudDivisor;
+			if ( bps == 921600 ) {
+				pCh->speed = CBR_921600;
+			} else {
+				bps = bps/10;
+				i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) );
+			}
+		}
+		i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed));
+		
+		i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
+		pCh->dataSetOut |= (I2_DTR | I2_RTS);
+	}
+	if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag)) 
+	{
+		i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, 
+			CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1));
+	}
+	if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag)) 
+	{
+		i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
+			CMD_SETPAR( 
+				(cflag & PARENB ?  (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP)
+			)
+		);
+	}
+	/* byte size and parity */
+	if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag)) 
+	{
+		int datasize;
+		switch ( cflag & CSIZE ) {
+		case CS5: datasize = CSZ_5; break;
+		case CS6: datasize = CSZ_6; break;
+		case CS7: datasize = CSZ_7; break;
+		case CS8: datasize = CSZ_8; break;
+		default:  datasize = CSZ_5; break;	/* as per serial.c */
+		}
+		i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) );
+	}
+	/* Process CTS flow control flag setting */
+	if ( (cflag & CRTSCTS) ) {
+		i2QueueCommands(PTYPE_INLINE, pCh, 100,
+						2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB);
+	} else {
+		i2QueueCommands(PTYPE_INLINE, pCh, 100,
+						2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
+	}
+	//
+	// Process XON/XOFF flow control flags settings
+	//
+	stop_char = STOP_CHAR(pCh->pTTY);
+	start_char = START_CHAR(pCh->pTTY);
+
+	//////////// can't be \000
+	if (stop_char == __DISABLED_CHAR ) 
+	{
+		stop_char = ~__DISABLED_CHAR; 
+	}
+	if (start_char == __DISABLED_CHAR ) 
+	{
+		start_char = ~__DISABLED_CHAR;
+	}
+	/////////////////////////////////
+
+	if ( o_tios->c_cc[VSTART] != start_char ) 
+	{
+		i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char));
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char));
+	}
+	if ( o_tios->c_cc[VSTOP] != stop_char ) 
+	{
+		 i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char));
+		 i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char));
+	}
+	if (stop_char == __DISABLED_CHAR ) 
+	{
+		stop_char = ~__DISABLED_CHAR;  //TEST123
+		goto no_xoff;
+	}
+	if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF))) 
+	{
+		if ( iflag & IXOFF ) {	// Enable XOFF output flow control
+			i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON));
+		} else {	// Disable XOFF output flow control
+no_xoff:
+			i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE));
+		}
+	}
+	if (start_char == __DISABLED_CHAR ) 
+	{
+		goto no_xon;
+	}
+	if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY))) 
+	{
+		if ( iflag & IXON ) {
+			if ( iflag & IXANY ) { // Enable XON/XANY output flow control
+				i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY));
+			} else { // Enable XON output flow control
+				i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON));
+			}
+		} else { // Disable XON output flow control
+no_xon:
+			i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE));
+		}
+	}
+	if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) ) 
+	{
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, 
+				CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0)));
+	}
+	if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) ) 
+	{
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, 
+				CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB));
+	}
+
+	if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) 
+			^	( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) ) 
+	{
+		char brkrpt = 0;
+		char parrpt = 0;
+
+		if ( iflag & IGNBRK ) { /* Ignore breaks altogether */
+			/* Ignore breaks altogether */
+			i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP);
+		} else {
+			if ( iflag & BRKINT ) {
+				if ( iflag & PARMRK ) {
+					brkrpt = 0x0a;	// exception an inline triple
+				} else {
+					brkrpt = 0x1a;	// exception and NULL
+				}
+				brkrpt |= 0x04;	// flush input
+			} else {
+				if ( iflag & PARMRK ) {
+					brkrpt = 0x0b;	//POSIX triple \0377 \0 \0
+				} else {
+					brkrpt = 0x01;	// Null only
+				}
+			}
+			i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt));
+		} 
+
+		if (iflag & IGNPAR) {
+			parrpt = 0x20;
+													/* would be 2 for not cirrus bug */
+													/* would be 0x20 cept for cirrus bug */
+		} else {
+			if ( iflag & PARMRK ) {
+				/*
+				 * Replace error characters with 3-byte sequence (\0377,\0,char)
+				 */
+				parrpt = 0x04 ;
+				i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0));
+			} else {
+				parrpt = 0x03;
+			} 
+		}
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt));
+	}
+	if (cflag & CLOCAL) {
+		// Status reporting fails for DCD if this is off
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP);
+		pCh->flags &= ~ASYNC_CHECK_CD;
+	} else {
+		i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP);
+		pCh->flags	|= ASYNC_CHECK_CD;
+	}
+
+service_it:
+	i2DrainOutput( pCh, 100 );		
+}
+
+/******************************************************************************/
+/* IPL Device Section                                                         */
+/******************************************************************************/
+
+/******************************************************************************/
+/* Function:   ip2_ipl_read()                                                  */
+/* Parameters: Pointer to device inode                                        */
+/*             Pointer to file structure                                      */
+/*             Pointer to data                                                */
+/*             Number of bytes to read                                        */
+/* Returns:    Success or failure                                             */
+/*                                                                            */
+/* Description:   Ugly                                                        */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+
+static 
+ssize_t
+ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off )
+{
+	unsigned int minor = iminor(pFile->f_dentry->d_inode);
+	int rc = 0;
+
+#ifdef IP2DEBUG_IPL
+	printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count );
+#endif
+
+	switch( minor ) {
+	case 0:	    // IPL device
+		rc = -EINVAL;
+		break;
+	case 1:	    // Status dump
+		rc = -EINVAL;
+		break;
+	case 2:	    // Ping device
+		rc = -EINVAL;
+		break;
+	case 3:	    // Trace device
+		rc = DumpTraceBuffer ( pData, count );
+		break;
+	case 4:	    // Trace device
+		rc = DumpFifoBuffer ( pData, count );
+		break;
+	default:
+		rc = -ENODEV;
+		break;
+	}
+	return rc;
+}
+
+static int
+DumpFifoBuffer ( char __user *pData, int count )
+{
+#ifdef DEBUG_FIFO
+	int rc;
+	rc = copy_to_user(pData, DBGBuf, count);
+
+	printk(KERN_DEBUG "Last index %d\n", I );
+
+	return count;
+#endif	/* DEBUG_FIFO */
+	return 0;
+}
+
+static int
+DumpTraceBuffer ( char __user *pData, int count )
+{
+#ifdef IP2DEBUG_TRACE
+	int rc;
+	int dumpcount;
+	int chunk;
+	int *pIndex = (int __user *)pData;
+
+	if ( count < (sizeof(int) * 6) ) {
+		return -EIO;
+	}
+	rc = put_user(tracewrap, pIndex );
+	rc = put_user(TRACEMAX, ++pIndex );
+	rc = put_user(tracestrip, ++pIndex );
+	rc = put_user(tracestuff, ++pIndex );
+	pData += sizeof(int) * 6;
+	count -= sizeof(int) * 6;
+
+	dumpcount = tracestuff - tracestrip;
+	if ( dumpcount < 0 ) {
+		dumpcount += TRACEMAX;
+	}
+	if ( dumpcount > count ) {
+		dumpcount = count;
+	}
+	chunk = TRACEMAX - tracestrip;
+	if ( dumpcount > chunk ) {
+		rc = copy_to_user(pData, &tracebuf[tracestrip],
+			      chunk * sizeof(tracebuf[0]) );
+		pData += chunk * sizeof(tracebuf[0]);
+		tracestrip = 0;
+		chunk = dumpcount - chunk;
+	} else {
+		chunk = dumpcount;
+	}
+	rc = copy_to_user(pData, &tracebuf[tracestrip],
+		      chunk * sizeof(tracebuf[0]) );
+	tracestrip += chunk;
+	tracewrap = 0;
+
+	rc = put_user(tracestrip, ++pIndex );
+	rc = put_user(tracestuff, ++pIndex );
+
+	return dumpcount;
+#else
+	return 0;
+#endif
+}
+
+/******************************************************************************/
+/* Function:   ip2_ipl_write()                                                 */
+/* Parameters:                                                                */
+/*             Pointer to file structure                                      */
+/*             Pointer to data                                                */
+/*             Number of bytes to write                                       */
+/* Returns:    Success or failure                                             */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static ssize_t
+ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off)
+{
+#ifdef IP2DEBUG_IPL
+	printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count );
+#endif
+	return 0;
+}
+
+/******************************************************************************/
+/* Function:   ip2_ipl_ioctl()                                                */
+/* Parameters: Pointer to device inode                                        */
+/*             Pointer to file structure                                      */
+/*             Command                                                        */
+/*             Argument                                                       */
+/* Returns:    Success or failure                                             */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static int
+ip2_ipl_ioctl ( struct inode *pInode, struct file *pFile, UINT cmd, ULONG arg )
+{
+	unsigned int iplminor = iminor(pInode);
+	int rc = 0;
+	void __user *argp = (void __user *)arg;
+	ULONG __user *pIndex = argp;
+	i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4];
+	i2ChanStrPtr pCh;
+
+#ifdef IP2DEBUG_IPL
+	printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg );
+#endif
+
+	switch ( iplminor ) {
+	case 0:	    // IPL device
+		rc = -EINVAL;
+		break;
+	case 1:	    // Status dump
+	case 5:
+	case 9:
+	case 13:
+		switch ( cmd ) {
+		case 64:	/* Driver - ip2stat */
+			rc = put_user(ip2_tty_driver->refcount, pIndex++ );
+			rc = put_user(irq_counter, pIndex++  );
+			rc = put_user(bh_counter, pIndex++  );
+			break;
+
+		case 65:	/* Board  - ip2stat */
+			if ( pB ) {
+				rc = copy_to_user(argp, pB, sizeof(i2eBordStr));
+				rc = put_user(INB(pB->i2eStatus),
+					(ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) );
+			} else {
+				rc = -ENODEV;
+			}
+			break;
+
+		default:
+			if (cmd < IP2_MAX_PORTS) {
+				pCh = DevTable[cmd];
+				if ( pCh )
+				{
+					rc = copy_to_user(argp, pCh, sizeof(i2ChanStr));
+				} else {
+					rc = -ENODEV;
+				}
+			} else {
+				rc = -EINVAL;
+			}
+		}
+		break;
+
+	case 2:	    // Ping device
+		rc = -EINVAL;
+		break;
+	case 3:	    // Trace device
+		if ( cmd == 1 ) {
+			rc = put_user(iiSendPendingMail, pIndex++ );
+			rc = put_user(i2InitChannels, pIndex++ );
+			rc = put_user(i2QueueNeeds, pIndex++ );
+			rc = put_user(i2QueueCommands, pIndex++ );
+			rc = put_user(i2GetStatus, pIndex++ );
+			rc = put_user(i2Input, pIndex++ );
+			rc = put_user(i2InputFlush, pIndex++ );
+			rc = put_user(i2Output, pIndex++ );
+			rc = put_user(i2FlushOutput, pIndex++ );
+			rc = put_user(i2DrainWakeup, pIndex++ );
+			rc = put_user(i2DrainOutput, pIndex++ );
+			rc = put_user(i2OutputFree, pIndex++ );
+			rc = put_user(i2StripFifo, pIndex++ );
+			rc = put_user(i2StuffFifoBypass, pIndex++ );
+			rc = put_user(i2StuffFifoFlow, pIndex++ );
+			rc = put_user(i2StuffFifoInline, pIndex++ );
+			rc = put_user(i2ServiceBoard, pIndex++ );
+			rc = put_user(serviceOutgoingFifo, pIndex++ );
+			// rc = put_user(ip2_init, pIndex++ );
+			rc = put_user(ip2_init_board, pIndex++ );
+			rc = put_user(find_eisa_board, pIndex++ );
+			rc = put_user(set_irq, pIndex++ );
+			rc = put_user(ip2_interrupt, pIndex++ );
+			rc = put_user(ip2_poll, pIndex++ );
+			rc = put_user(service_all_boards, pIndex++ );
+			rc = put_user(do_input, pIndex++ );
+			rc = put_user(do_status, pIndex++ );
+#ifndef IP2DEBUG_OPEN
+			rc = put_user(0, pIndex++ );
+#else
+			rc = put_user(open_sanity_check, pIndex++ );
+#endif
+			rc = put_user(ip2_open, pIndex++ );
+			rc = put_user(ip2_close, pIndex++ );
+			rc = put_user(ip2_hangup, pIndex++ );
+			rc = put_user(ip2_write, pIndex++ );
+			rc = put_user(ip2_putchar, pIndex++ );
+			rc = put_user(ip2_flush_chars, pIndex++ );
+			rc = put_user(ip2_write_room, pIndex++ );
+			rc = put_user(ip2_chars_in_buf, pIndex++ );
+			rc = put_user(ip2_flush_buffer, pIndex++ );
+
+			//rc = put_user(ip2_wait_until_sent, pIndex++ );
+			rc = put_user(0, pIndex++ );
+
+			rc = put_user(ip2_throttle, pIndex++ );
+			rc = put_user(ip2_unthrottle, pIndex++ );
+			rc = put_user(ip2_ioctl, pIndex++ );
+			rc = put_user(0, pIndex++ );
+			rc = put_user(get_serial_info, pIndex++ );
+			rc = put_user(set_serial_info, pIndex++ );
+			rc = put_user(ip2_set_termios, pIndex++ );
+			rc = put_user(ip2_set_line_discipline, pIndex++ );
+			rc = put_user(set_params, pIndex++ );
+		} else {
+			rc = -EINVAL;
+		}
+
+		break;
+
+	default:
+		rc = -ENODEV;
+		break;
+	}
+	return rc;
+}
+
+/******************************************************************************/
+/* Function:   ip2_ipl_open()                                                 */
+/* Parameters: Pointer to device inode                                        */
+/*             Pointer to file structure                                      */
+/* Returns:    Success or failure                                             */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+static int
+ip2_ipl_open( struct inode *pInode, struct file *pFile )
+{
+	unsigned int iplminor = iminor(pInode);
+	i2eBordStrPtr pB;
+	i2ChanStrPtr  pCh;
+
+#ifdef IP2DEBUG_IPL
+	printk (KERN_DEBUG "IP2IPL: open\n" );
+#endif
+
+	switch(iplminor) {
+	// These are the IPL devices
+	case 0:
+	case 4:
+	case 8:
+	case 12:
+		break;
+
+	// These are the status devices
+	case 1:
+	case 5:
+	case 9:
+	case 13:
+		break;
+
+	// These are the debug devices
+	case 2:
+	case 6:
+	case 10:
+	case 14:
+		pB = i2BoardPtrTable[iplminor / 4];
+		pCh = (i2ChanStrPtr) pB->i2eChannelPtr;
+		break;
+
+	// This is the trace device
+	case 3:
+		break;
+	}
+	return 0;
+}
+/******************************************************************************/
+/* Function:   ip2_read_procmem                                               */
+/* Parameters:                                                                */
+/*                                                                            */
+/* Returns: Length of output                                                  */
+/*                                                                            */
+/* Description:                                                               */
+/*   Supplies some driver operating parameters                                */
+/*	Not real useful unless your debugging the fifo							  */
+/*                                                                            */
+/******************************************************************************/
+
+#define LIMIT  (PAGE_SIZE - 120)
+
+static int
+ip2_read_procmem(char *buf, char **start, off_t offset, int len)
+{
+	i2eBordStrPtr  pB;
+	i2ChanStrPtr  pCh;
+	PTTY tty;
+	int i;
+
+	len = 0;
+
+#define FMTLINE	"%3d: 0x%08x 0x%08x 0%011o 0%011o\n"
+#define FMTLIN2	"     0x%04x 0x%04x tx flow 0x%x\n"
+#define FMTLIN3	"     0x%04x 0x%04x rc flow\n"
+
+	len += sprintf(buf+len,"\n");
+
+	for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		pB = i2BoardPtrTable[i];
+		if ( pB ) {
+			len += sprintf(buf+len,"board %d:\n",i);
+			len += sprintf(buf+len,"\tFifo rem: %d mty: %x outM %x\n",
+				pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting);
+		}
+	}
+
+	len += sprintf(buf+len,"#: tty flags, port flags,     cflags,     iflags\n");
+	for (i=0; i < IP2_MAX_PORTS; i++) {
+		if (len > LIMIT)
+			break;
+		pCh = DevTable[i];
+		if (pCh) {
+			tty = pCh->pTTY;
+			if (tty && tty->count) {
+				len += sprintf(buf+len,FMTLINE,i,(int)tty->flags,pCh->flags,
+									tty->termios->c_cflag,tty->termios->c_iflag);
+
+				len += sprintf(buf+len,FMTLIN2,
+						pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds);
+				len += sprintf(buf+len,FMTLIN3,pCh->infl.asof,pCh->infl.room);
+			}
+		}
+	}
+	return len;
+}
+
+/*
+ * This is the handler for /proc/tty/driver/ip2
+ *
+ * This stretch of code has been largely plagerized from at least three
+ * different sources including ip2mkdev.c and a couple of other drivers.
+ * The bugs are all mine.  :-)	=mhw=
+ */
+static int ip2_read_proc(char *page, char **start, off_t off,
+				int count, int *eof, void *data)
+{
+	int	i, j, box;
+	int	len = 0;
+	int	boxes = 0;
+	int	ports = 0;
+	int	tports = 0;
+	off_t	begin = 0;
+	i2eBordStrPtr  pB;
+
+	len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion );
+	len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n",
+			IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR,
+			IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX);
+
+	for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
+		/* This need to be reset for a board by board count... */
+		boxes = 0;
+		pB = i2BoardPtrTable[i];
+		if( pB ) {
+			switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) 
+			{
+			case POR_ID_FIIEX:
+				len += sprintf( page+len, "Board %d: EX ports=", i );
+				for( box = 0; box < ABS_MAX_BOXES; ++box )
+				{
+					ports = 0;
+
+					if( pB->i2eChannelMap[box] != 0 ) ++boxes;
+					for( j = 0; j < ABS_BIGGEST_BOX; ++j ) 
+					{
+						if( pB->i2eChannelMap[box] & 1<< j ) {
+							++ports;
+						}
+					}
+					len += sprintf( page+len, "%d,", ports );
+					tports += ports;
+				}
+
+				--len;	/* Backup over that last comma */
+
+				len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 );
+				break;
+
+			case POR_ID_II_4:
+				len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i );
+				tports = ports = 4;
+				break;
+
+			case POR_ID_II_8:
+				len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i );
+				tports = ports = 8;
+				break;
+
+			case POR_ID_II_8R:
+				len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i );
+				tports = ports = 8;
+				break;
+
+			default:
+				len += sprintf(page+len, "Board %d: unknown", i );
+				/* Don't try and probe for minor numbers */
+				tports = ports = 0;
+			}
+
+		} else {
+			/* Don't try and probe for minor numbers */
+			len += sprintf(page+len, "Board %d: vacant", i );
+			tports = ports = 0;
+		}
+
+		if( tports ) {
+			len += sprintf(page+len, " minors=" );
+
+			for ( box = 0; box < ABS_MAX_BOXES; ++box )
+			{
+				for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
+				{
+					if ( pB->i2eChannelMap[box] & (1 << j) )
+					{
+						len += sprintf (page+len,"%d,",
+							j + ABS_BIGGEST_BOX *
+							(box+i*ABS_MAX_BOXES));
+					}
+				}
+			}
+
+			page[ len - 1 ] = '\n';	/* Overwrite that last comma */
+		} else {
+			len += sprintf (page+len,"\n" );
+		}
+
+		if (len+begin > off+count)
+			break;
+		if (len+begin < off) {
+			begin += len;
+			len = 0;
+		}
+	}
+
+	if (i >= IP2_MAX_BOARDS)
+		*eof = 1;
+	if (off >= len+begin)
+		return 0;
+
+	*start = page + (off-begin);
+	return ((count < begin+len-off) ? count : begin+len-off);
+ }
+ 
+/******************************************************************************/
+/* Function:   ip2trace()                                                     */
+/* Parameters: Value to add to trace buffer                                   */
+/* Returns:    Nothing                                                        */
+/*                                                                            */
+/* Description:                                                               */
+/*                                                                            */
+/*                                                                            */
+/******************************************************************************/
+#ifdef IP2DEBUG_TRACE
+void
+ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...)
+{
+	long flags;
+	unsigned long *pCode = &codes;
+	union ip2breadcrumb bc;
+	i2ChanStrPtr  pCh;
+
+
+	tracebuf[tracestuff++] = jiffies;
+	if ( tracestuff == TRACEMAX ) {
+		tracestuff = 0;
+	}
+	if ( tracestuff == tracestrip ) {
+		if ( ++tracestrip == TRACEMAX ) {
+			tracestrip = 0;
+		}
+		++tracewrap;
+	}
+
+	bc.hdr.port  = 0xff & pn;
+	bc.hdr.cat   = cat;
+	bc.hdr.codes = (unsigned char)( codes & 0xff );
+	bc.hdr.label = label;
+	tracebuf[tracestuff++] = bc.value;
+
+	for (;;) {
+		if ( tracestuff == TRACEMAX ) {
+			tracestuff = 0;
+		}
+		if ( tracestuff == tracestrip ) {
+			if ( ++tracestrip == TRACEMAX ) {
+				tracestrip = 0;
+			}
+			++tracewrap;
+		}
+
+		if ( !codes-- )
+			break;
+
+		tracebuf[tracestuff++] = *++pCode;
+	}
+}
+#endif
+
+
+MODULE_LICENSE("GPL");