path: root/packages/linux/linux-mtx-2-2.4.27/40-option-hsdpa.patch

diff -uNr linux-org/Documentation/Configure.help linux/Documentation/Configure.help
--- linux-org/Documentation/Configure.help	2006-02-06 14:01:32.375955928 +0100
+++ linux/Documentation/Configure.help	2006-02-06 15:51:13.332498464 +0100
@@ -4057,6 +4057,9 @@
   The module will be called synclinkmp.o.  If you want to do that, say M
   here.
 
+Option HSDPA card support
+CONFIG_NOZOMI
+
 ACP Modem (Mwave) support
 CONFIG_MWAVE
   The ACP modem (Mwave) for Linux is a WinModem. It is composed of a
diff -uNr linux-org/drivers/char/Config.in linux/drivers/char/Config.in
--- linux-org/drivers/char/Config.in	2006-02-06 14:01:55.767399888 +0100
+++ linux/drivers/char/Config.in	2006-02-06 15:51:07.574373832 +0100
@@ -388,6 +388,8 @@
 
 endmenu
 
+tristate '  Option HSDPA card support' CONFIG_NOZOMI
+
 if [ "$CONFIG_HOTPLUG" = "y" -a "$CONFIG_PCMCIA" != "n" ]; then
    source drivers/char/pcmcia/Config.in
 fi
diff -uNr linux-org/drivers/char/Makefile linux/drivers/char/Makefile
--- linux-org/drivers/char/Makefile	2006-02-06 14:01:55.782397608 +0100
+++ linux/drivers/char/Makefile	2006-02-06 15:30:37.949305256 +0100
@@ -331,6 +331,11 @@
 obj-$(CONFIG_INDYDOG) += indydog.o
 obj-$(CONFIG_8xx_WDT) += mpc8xx_wdt.o
 
+subdir-$(CONFIG_NOZOMI) += nozomi
+ifeq ($(CONFIG_NOZOMI),y)
+  obj-y += nozomi/noz.o
+endif
+
 subdir-$(CONFIG_MWAVE) += mwave
 ifeq ($(CONFIG_MWAVE),y)
   obj-y += mwave/mwave.o
diff -uNr linux-org/drivers/char/nozomi/CHANGELOG linux/drivers/char/nozomi/CHANGELOG
--- linux-org/drivers/char/nozomi/CHANGELOG	1970-01-01 01:00:00.000000000 +0100
+++ linux/drivers/char/nozomi/CHANGELOG	2006-02-06 15:30:07.370953872 +0100
@@ -0,0 +1,7 @@
+/*
+ * Version 1.0
+ *
+ * First version of driver, only tested with card of type F32_2.
+ * Works fine with 2.4 and 2.6 kernels.
+ * Driver also support big endian architecture.
+ */
diff -uNr linux-org/drivers/char/nozomi/COPYING linux/drivers/char/nozomi/COPYING
--- linux-org/drivers/char/nozomi/COPYING	1970-01-01 01:00:00.000000000 +0100
+++ linux/drivers/char/nozomi/COPYING	2006-02-06 15:30:07.371953720 +0100
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                       51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
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+License is intended to guarantee your freedom to share and change free
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+Foundation's software and to any other program whose authors commit to
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+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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+
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diff -uNr linux-org/drivers/char/nozomi/Makefile linux/drivers/char/nozomi/Makefile
--- linux-org/drivers/char/nozomi/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux/drivers/char/nozomi/Makefile	2006-02-06 15:30:07.379952504 +0100
@@ -0,0 +1,25 @@
+#
+# Makefile for ACP Modem (Mwave).
+#
+# See the README file in this directory for more info. <paulsch@us.ibm.com>
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definitions are now inherited from the
+# parent makes..
+#
+
+# To compile in lots (~20 KiB) of run-time enablable printk()s for debugging:
+#EXTRA_CFLAGS += -DMW_TRACE
+
+# To have the mwave driver disable other uarts if necessary
+# EXTRA_CFLAGS += -DMWAVE_FUTZ_WITH_OTHER_DEVICES
+
+O_TARGET := noz.o
+
+obj-y	:= nozomi.o kfifo.o 
+obj-m	:= $(O_TARGET)
+
+include $(TOPDIR)/Rules.make
diff -uNr linux-org/drivers/char/nozomi/README linux/drivers/char/nozomi/README
--- linux-org/drivers/char/nozomi/README	1970-01-01 01:00:00.000000000 +0100
+++ linux/drivers/char/nozomi/README	2006-02-06 15:30:07.380952352 +0100
@@ -0,0 +1,17 @@
+To build this driver for your kernel, please check:
+
+For kernel 2.6
+---------------
+Check the Makefile and run 'make'.
+
+For kernel 2.4
+----------
+make HW=PC_24
+
+If you have troubles:
+1) Have proper kernel headers/source as your running kernel.
+2) Make sure this variable in Makefile is correct KERNELDIR	= -I/path/to/kernel
+3) If the /dev/noz[0-3] will not be created automatically, do:
+mknod /dev/noz0 c 241 0; mknod /dev/noz1 c 241 1; 
+mknod /dev/noz2 c 241 2; mknod /dev/noz3 c 241 3
+
diff -uNr linux-org/drivers/char/nozomi/TODO linux/drivers/char/nozomi/TODO
--- linux-org/drivers/char/nozomi/TODO	1970-01-01 01:00:00.000000000 +0100
+++ linux/drivers/char/nozomi/TODO	2006-02-06 15:30:07.361955240 +0100
@@ -0,0 +1,6 @@
+* When having a noz* open and rmmod module or removing card,
+  the driver core dumps.
+
+* Does not yet support multiple cards.
+
+* Add a helpful description.
diff -uNr linux-org/drivers/char/nozomi/kfifo.c linux/drivers/char/nozomi/kfifo.c
--- linux-org/drivers/char/nozomi/kfifo.c	1970-01-01 01:00:00.000000000 +0100
+++ linux/drivers/char/nozomi/kfifo.c	2006-02-06 15:30:07.361955240 +0100
@@ -0,0 +1,189 @@
+/*
+ * A simple kernel FIFO implementation.
+ *
+ * Copyright (C) 2004 Stelian Pop <stelian@popies.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <asm/uaccess.h>
+#include "kfifo.h"
+
+
+/**
+ * kfifo_init - allocates a new FIFO using a preallocated buffer
+ * @buffer: the preallocated buffer to be used.
+ * @size: the size of the internal buffer, this have to be a power of 2.
+ * @gfp_mask: get_free_pages mask, passed to kmalloc()
+ * @lock: the lock to be used to protect the fifo buffer
+ *
+ * Do NOT pass the kfifo to kfifo_free() after use ! Simply free the
+ * struct kfifo with kfree().
+ */
+struct kfifo *kfifo_init(unsigned char *buffer, unsigned int size,
+			 unsigned int  gfp_mask, void *lock)
+{
+	struct kfifo *fifo;
+
+	/* size must be a power of 2 */
+	BUG_ON(size & (size - 1));
+
+	fifo = kmalloc(sizeof(struct kfifo), gfp_mask);
+	if (!fifo)
+		return ERR_PTR(-ENOMEM);
+
+	fifo->buffer = buffer;
+	fifo->size = size;
+	fifo->in = fifo->out = 0;
+
+	return fifo;
+}
+
+/**
+ * kfifo_alloc - allocates a new FIFO and its internal buffer
+ * @size: the size of the internal buffer to be allocated.
+ * @gfp_mask: get_free_pages mask, passed to kmalloc()
+ * @lock: the lock to be used to protect the fifo buffer
+ *
+ * The size will be rounded-up to a power of 2.
+ */
+struct kfifo *kfifo_alloc(unsigned int size, unsigned int  gfp_mask, void *lock)
+{
+	unsigned char *buffer;
+	struct kfifo *ret;
+
+	/*
+	 * round up to the next power of 2, since our 'let the indices
+	 * wrap' tachnique works only in this case.
+	 */
+	if (size & (size - 1)) {
+		BUG_ON(size > 0x80000000);
+		printk("Do not support no power of two!\n");
+		//size = roundup_pow_of_two(size);
+	}
+
+	buffer = kmalloc(size, gfp_mask);
+	if (!buffer)
+		return ERR_PTR(-ENOMEM);
+
+	ret = kfifo_init(buffer, size, gfp_mask, lock);
+
+	if (IS_ERR(ret))
+		kfree(buffer);
+
+	return ret;
+}
+
+/**
+ * kfifo_free - frees the FIFO
+ * @fifo: the fifo to be freed.
+ */
+void kfifo_free(struct kfifo *fifo)
+{
+	kfree(fifo->buffer);
+	kfree(fifo);
+}
+
+/**
+ * __kfifo_put - puts some data into the FIFO, no locking version
+ * @fifo: the fifo to be used.
+ * @buffer: the data to be added.
+ * @len: the length of the data to be added.
+ *
+ * This function copies at most 'len' bytes from the 'buffer' into
+ * the FIFO depending on the free space, and returns the number of
+ * bytes copied.
+ *
+ * Note that with only one concurrent reader and one concurrent
+ * writer, you don't need extra locking to use these functions.
+ */
+unsigned int __kfifo_put(struct kfifo *fifo,
+			 unsigned char *buffer, unsigned int len)
+{
+	unsigned int l;
+
+	len = min(len, fifo->size - fifo->in + fifo->out);
+
+	/* first put the data starting from fifo->in to buffer end */
+	l = min(len, fifo->size - (fifo->in & (fifo->size - 1)));
+	memcpy(fifo->buffer + (fifo->in & (fifo->size - 1)), buffer, l);
+
+	/* then put the rest (if any) at the beginning of the buffer */
+	memcpy(fifo->buffer, buffer + l, len - l);
+
+	fifo->in += len;
+
+	return len;
+}
+
+/** __kfifio_put_user works like __kfifo_put, but copies data from 
+ *  user space.
+ */
+
+unsigned int __kfifo_put_user(struct kfifo *fifo,
+			 unsigned char *buffer, unsigned int len)
+{
+	unsigned int l;
+
+	len = min(len, fifo->size - fifo->in + fifo->out);
+
+	/* first put the data starting from fifo->in to buffer end */
+	l = min(len, fifo->size - (fifo->in & (fifo->size - 1)));
+	copy_from_user(fifo->buffer + (fifo->in & (fifo->size - 1)), buffer, l);
+
+	/* then put the rest (if any) at the beginning of the buffer */
+	copy_from_user(fifo->buffer, buffer + l, len - l);
+
+	fifo->in += len;
+
+	return len;
+}
+
+
+
+/**
+ * __kfifo_get - gets some data from the FIFO, no locking version
+ * @fifo: the fifo to be used.
+ * @buffer: where the data must be copied.
+ * @len: the size of the destination buffer.
+ *
+ * This function copies at most 'len' bytes from the FIFO into the
+ * 'buffer' and returns the number of copied bytes.
+ *
+ * Note that with only one concurrent reader and one concurrent
+ * writer, you don't need extra locking to use these functions.
+ */
+unsigned int __kfifo_get(struct kfifo *fifo,
+			 unsigned char *buffer, unsigned int len)
+{
+	unsigned int l;
+
+	len = min(len, fifo->in - fifo->out);
+
+	/* first get the data from fifo->out until the end of the buffer */
+	l = min(len, fifo->size - (fifo->out & (fifo->size - 1)));
+	memcpy(buffer, fifo->buffer + (fifo->out & (fifo->size - 1)), l);
+
+	/* then get the rest (if any) from the beginning of the buffer */
+	memcpy(buffer + l, fifo->buffer, len - l);
+
+	fifo->out += len;
+
+	return len;
+}
diff -uNr linux-org/drivers/char/nozomi/kfifo.h linux/drivers/char/nozomi/kfifo.h
--- linux-org/drivers/char/nozomi/kfifo.h	1970-01-01 01:00:00.000000000 +0100
+++ linux/drivers/char/nozomi/kfifo.h	2006-02-06 15:30:07.361955240 +0100
@@ -0,0 +1,67 @@
+/*
+ * A simple kernel FIFO implementation.
+ *
+ * Copyright (C) 2004 Stelian Pop <stelian@popies.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+#ifndef _LINUX_KFIFO_H
+#define _LINUX_KFIFO_H
+
+#ifdef __KERNEL__
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
+#warning "Don't include this header in 2.6, use header supplied with kernel"
+#endif 
+
+struct kfifo {
+	unsigned char *buffer;	/* the buffer holding the data */
+	unsigned int size;	/* the size of the allocated buffer */
+	unsigned int in;	/* data is added at offset (in % size) */
+	unsigned int out;	/* data is extracted from off. (out % size) */
+};
+
+extern struct kfifo *kfifo_init(unsigned char *buffer, unsigned int size, unsigned int gfp_mask, void *lock);
+extern struct kfifo *kfifo_alloc(unsigned int size, unsigned int gfp_mask, void *lock);
+extern void kfifo_free(struct kfifo *fifo);
+extern unsigned int __kfifo_put(struct kfifo *fifo, unsigned char *buffer, unsigned int len);
+extern unsigned int __kfifo_put_user(struct kfifo *fifo, unsigned char *buffer, unsigned int len);
+extern unsigned int __kfifo_get(struct kfifo *fifo,	unsigned char *buffer, unsigned int len);
+
+/**
+ * __kfifo_reset - removes the entire FIFO contents, no locking version
+ * @fifo: the fifo to be emptied.
+ */
+static inline void __kfifo_reset(struct kfifo *fifo)
+{
+	fifo->in = fifo->out = 0;
+}
+
+/**
+ * __kfifo_len - returns the number of bytes available in the FIFO, no locking version
+ * @fifo: the fifo to be used.
+ */
+static inline unsigned int __kfifo_len(struct kfifo *fifo)
+{
+	return fifo->in - fifo->out;
+}
+
+#else
+#warning "don't include kernel headers in userspace"
+#endif /* __KERNEL__ */
+#endif
diff -uNr linux-org/drivers/char/nozomi/nozomi.c linux/drivers/char/nozomi/nozomi.c
--- linux-org/drivers/char/nozomi/nozomi.c	1970-01-01 01:00:00.000000000 +0100
+++ linux/drivers/char/nozomi/nozomi.c	2006-02-06 15:30:07.379952504 +0100
@@ -0,0 +1,2238 @@
+
+/* nozomi.c  -- HSDPA driver Broadband Wireless Data Card - Globe Trotter
+ *
+ * Written by: Ulf Jakobsson,
+ *			 Jan Åkerfeldt,
+ *			 Stefan Thomasson,
+ *
+ * Maintained by: Paul Hardwick, p.hardwick@option.com
+ *
+ * Source has been ported from an implementation made by Filip Aben, f.aben@option.com
+ *
+ * --------------------------------------------------------------------------
+
+ Copyright (c) 2005 Option Wireless Sweden AB
+ All rights Reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+ * --------------------------------------------------------------------------
+ */
+
+/* CHANGELOG
+ *
+ * See CHANGELOG in this package
+ */
+
+/* TODO
+ *
+ * See TODO file in this package
+ */
+
+
+/*
+ * TODO2 fix the send_reset_token() routine not to use the fixed start address
+ */
+
+
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
+#define KERNEL_2_6
+#elif LINUX_VERSION_CODE > KERNEL_VERSION(2,4,0)
+#define KERNEL_2_4
+#endif
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/serial.h>
+#include <linux/interrupt.h>
+#include <linux/kmod.h>
+#include <linux/proc_fs.h>
+#include <asm/uaccess.h>
+
+#include <linux/init.h>
+
+#define VERSION_STRING DRIVER_DESC " (build date: " __DATE__ " " __TIME__ ")"
+
+#ifdef KERNEL_2_6
+#include <linux/kfifo.h>
+#else
+#include "kfifo.h"
+#endif
+
+#ifdef KERNEL_2_4
+#ifndef IRQ_NONE
+#define IRQ_NONE
+#endif
+#ifndef IRQ_HANDLED
+#define IRQ_HANDLED
+typedef void irqreturn_t;
+#endif
+#endif
+
+#ifndef CONFIG_PCI
+#error "This driver needs PCI support to be available"
+#endif
+
+/*	Macros definitions */
+
+/* Enable this to have a lot of debug printouts */
+/*#define NOZOMI_DEBUG */
+
+/* Default debug printout level */
+#define NOZOMI_DEBUG_LEVEL 0xffff
+
+#define P_BUF_SIZE 128
+#define NFO( _err_flag_, args...)											\
+  do{																		\
+	char t_m_p_[P_BUF_SIZE];												 \
+	  snprintf(t_m_p_, sizeof(t_m_p_), ##args);							  \
+	  printk( _err_flag_ "[%d] %s(): %s\n", __LINE__, __FUNCTION__, t_m_p_); \
+} while(0)
+
+#define INFO(args...) NFO(KERN_INFO, ##args)
+#define ERR(args...)  NFO( KERN_ERR, ##args)
+
+#define D1(args...) D_(0x01, ##args)
+#define D2(args...) D_(0x02, ##args)
+#define D3(args...) D_(0x04, ##args)
+#define D4(args...) D_(0x08, ##args)
+#define D5(args...) D_(0x10, ##args)
+#define D6(args...) D_(0x20, ##args)
+#define D7(args...) D_(0x40, ##args)
+#define D8(args...) D_(0x80, ##args)
+
+
+#ifdef NOZOMI_DEBUG
+#define D_(lvl, args...) D(lvl, ##args)
+  /* Do we need this settable at runtime? */
+static int nzdebug = NOZOMI_DEBUG_LEVEL;
+
+#define D(lvl, args...)  do{if(lvl & nzdebug) NFO(KERN_INFO, ##args );}while(0)
+#define D_(lvl, args...) D(lvl, ##args)
+
+/* These printouts are always printed */
+
+#else
+  static const int nzdebug = 0;
+#define D_(lvl, args...)
+#endif
+
+/* TODO: rewrite to optimize macros... */
+#define SET_FCR(value__) \
+  do {  \
+	writew((value__), (void*) (dc->REG_FCR )); \
+} while(0)
+
+#define SET_IER(value__, mask__) \
+  do {  \
+	dc->ier_last_written = (dc->ier_last_written & ~mask__) | (value__ & mask__ );\
+	writew( dc->ier_last_written, (void*) (dc->REG_IER));\
+} while(0)
+
+#define GET_IER(read_val__) \
+  do {  \
+	(read_val__) = readw((void*) (dc->REG_IER));\
+} while(0)
+
+#define GET_IIR(read_val__) \
+  do {  \
+	(read_val__) = readw((void*) (dc->REG_IIR));\
+} while(0)
+
+#define GET_MEM(value__, addr__, length__) \
+  do {  \
+	read_mem32( (u32*) (value__), (u32) (addr__), (length__));\
+} while(0)
+
+#define GET_MEM_BUF(value__, addr__, length__) \
+  do {  \
+	read_mem32_buf( (u32*) (value__), (u32) (addr__), (length__));\
+} while(0)
+
+#define SET_MEM(addr__, value__, length__) \
+  do {  \
+  write_mem32( (addr__),  (u32*) (value__), (length__));\
+} while(0)
+
+#define SET_MEM_BUF(addr__, value__, length__) \
+  do {  \
+  write_mem32_buf( (addr__),  (u32*) (value__), (length__));\
+} while(0)
+
+
+#define TMP_BUF_MAX 256
+
+#define DUMP(buf__,len__) \
+  do {  \
+	char tbuf[TMP_BUF_MAX]={0};\
+	if (len__>1) {\
+		snprintf(tbuf, len__ > TMP_BUF_MAX ? TMP_BUF_MAX : len__, "%s",buf__);\
+		if(tbuf[len__-2] == '\r') {\
+			tbuf[len__-2] = 'r';\
+		}\
+		D1( "SENDING: '%s' (%d+n)", tbuf, len__);\
+	} else {\
+		D1( "SENDING: '%s' (%d)", tbuf, len__);\
+	}\
+} while(0)
+
+#define RELEVANT_IFLAG(iflag) ((iflag) & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+
+
+/*	Defines */
+#define NOZOMI_NAME	 "nozomi"
+#define NOZOMI_NAME_TTY "nozomi_tty"
+#define DRIVER_DESC	 "Nozomi driver"
+
+#define NTTY_TTY_MAJOR			241
+#define NTTY_TTY_MINORS			MAX_PORT
+#define NTTY_FIFO_BUFFER_SIZE	8192
+
+/* Must be power of 2 */
+#define FIFO_BUFFER_SIZE_UL 	8192
+
+/* Size of tmp send buffer to card */
+#define SEND_BUF_MAX 	1024
+#define RECEIVE_BUF_MAX 4
+
+/* Our fake UART values */
+#define MCR_DTR		0x01
+#define MCR_RTS		0x02
+#define MCR_LOOP	0x04
+#define MSR_CTS		0x08
+#define MSR_CD		0x10
+#define MSR_RI		0x20
+#define MSR_DSR		0x40
+
+/* Define all types of vendors and devices to support */
+#define VENDOR1		 0x1931 /* Vendor Option */
+#define DEVICE1		 0x000c /* HSDPA card */
+
+#define R_IIR		 0x0000  /* Interrupt Identity Register */
+#define R_FCR		 0x0000  /* Flow Control Register */
+#define R_IER		 0x0004  /* Interrupt Enable Register */
+
+#define CONFIG_MAGIC 0xEFEFFEFE
+#define TOGGLE_VALID 0x0000
+
+/* Definition of interrupt tokens */
+#define MDM_DL1  0x0001
+#define MDM_UL1  0x0002
+#define MDM_DL2  0x0004
+#define MDM_UL2  0x0008
+#define DIAG_DL1 0x0010
+#define DIAG_DL2 0x0020
+#define DIAG_UL  0x0040
+#define APP1_DL  0x0080
+#define APP1_UL  0x0100
+#define APP2_DL  0x0200
+#define APP2_UL  0x0400
+#define CTRL_DL  0x0800
+#define CTRL_UL  0x1000
+#define RESET	0x8000
+
+#define MDM_DL	(MDM_DL1  | MDM_DL2)
+#define MDM_UL	(MDM_UL1  | MDM_UL2)
+#define DIAG_DL (DIAG_DL1 | DIAG_DL2)
+
+/* modem signal definition */
+#define CTRL_DSR 0x0001
+#define CTRL_DCD 0x0002
+#define CTRL_RI	 0x0004
+#define CTRL_CTS 0x0008
+
+#define CTRL_DTR 0x0001
+#define CTRL_RTS 0x0002
+
+#define MAX_PORT 4
+#define NOZOMI_MAX_PORTS 5
+
+/*	Type definitions */
+
+/* There are two types of nozomi cards, one with 2048 memory and with 8192 memory */
+typedef enum {
+	F32_2 = 2048, /* Has 512 bytes downlink and uplink * 2			 -> 2048 */
+	F32_8 = 9192, /* Has 3072 bytes downlink and 1024 bytes uplink * 2 -> 8192 */
+} card_type_t;
+
+/* Two different toggle channels exist */
+typedef enum {
+	CH_A=0,
+	CH_B=1,
+} channel_t;
+
+/* Port definition for the card regarding flow control */
+typedef enum {
+	CTRL_CMD  = 0x00,
+	CTRL_MDM  = 0x01,
+	CTRL_DIAG = 0x02,
+	CTRL_APP1 = 0x03,
+	CTRL_APP2 = 0x04,
+	CTRL_ERROR = -1,
+} ctrl_port_t;
+
+/* Ports that the nozomi has */
+typedef enum {
+	PORT_MDM = 0,
+	PORT_DIAG= 1,
+	PORT_APP1= 2,
+	PORT_APP2= 3,
+	PORT_CTRL= 4,
+	PORT_ERROR=-1,
+} port_type_t;
+
+#ifdef __ARMEB__
+/* Big endian */
+
+typedef struct {
+	unsigned enabled : 5; /* Toggle fields are valid if enabled is 0, else A-channels
+							 must always be used. */
+	unsigned diag_dl : 1;
+	unsigned mdm_dl : 1;
+	unsigned mdm_ul : 1;
+} __attribute__ ((packed)) toggles_t;
+
+/* Configuration table to read at startup of card */
+/* Is for now only needed during initialization phase */
+typedef struct {
+	u32 signature;
+	u16 product_information;
+	u16 version;
+	u8 pad3[3];
+	toggles_t toggle;
+	u8 pad1[4];
+	u16 dl_mdm_len1; /* If this is 64, it can hold 60 bytes + 4 that is length field */
+	u16 dl_start;
+
+	u16 dl_diag_len1;
+	u16 dl_mdm_len2; /* If this is 64, it can hold 60 bytes + 4 that is length field */
+	u16 dl_app1_len;
+
+	u16 dl_diag_len2;
+	u16 dl_ctrl_len;
+	u16 dl_app2_len;
+	u8 pad2[16];
+	u16 ul_mdm_len1;
+	u16 ul_start;
+	u16 ul_diag_len;
+	u16 ul_mdm_len2;
+	u16 ul_app1_len;
+	u16 ul_app2_len;
+	u16 ul_ctrl_len;
+} __attribute__((packed)) config_table_t;
+
+/* This stores all control downlink flags */
+typedef struct {
+	u8 port;
+	unsigned reserved : 4;
+	unsigned CTS : 1;
+	unsigned RI  : 1;
+	unsigned DCD : 1;
+	unsigned DSR : 1;
+} __attribute__ ((packed)) ctrl_dl_t;
+
+/* This stores all control uplink flags */
+typedef struct {
+	u8 port;
+	unsigned reserved : 6;
+	unsigned RTS : 1;
+	unsigned DTR : 1;
+} __attribute__ ((packed)) ctrl_ul_t;
+
+#else
+/* Little endian */
+
+/* This represents the toggle information */
+typedef struct {
+	unsigned mdm_ul : 1;
+	unsigned mdm_dl : 1;
+	unsigned diag_dl : 1;
+	unsigned enabled : 5; /* Toggle fields are valid if enabled is 0, else A-channels
+							 must always be used. */
+} __attribute__ ((packed)) toggles_t;
+
+/* Configuration table to read at startup of card */
+typedef struct {
+	u32 signature;
+	u16 version;
+	u16 product_information;
+	toggles_t toggle;
+	u8 pad1[7];
+	u16 dl_start;
+	u16 dl_mdm_len1; /* If this is 64, it can hold 60 bytes + 4 that is length field */
+	u16 dl_mdm_len2;
+	u16 dl_diag_len1;
+	u16 dl_diag_len2;
+	u16 dl_app1_len;
+	u16 dl_app2_len;
+	u16 dl_ctrl_len;
+	u8 pad2[16];
+	u16 ul_start;
+	u16 ul_mdm_len2;
+	u16 ul_mdm_len1;
+	u16 ul_diag_len;
+	u16 ul_app1_len;
+	u16 ul_app2_len;
+	u16 ul_ctrl_len;
+} __attribute__((packed)) config_table_t;
+
+/* This stores all control downlink flags */
+typedef struct {
+	unsigned DSR : 1;
+	unsigned DCD : 1;
+	unsigned RI  : 1;
+	unsigned CTS : 1;
+	unsigned reserverd : 4;
+	u8 port;
+} __attribute__ ((packed)) ctrl_dl_t;
+
+/* This stores all control uplink flags */
+typedef struct {
+	unsigned DTR : 1;
+	unsigned RTS : 1;
+	unsigned reserved : 6;
+	u8 port;
+} __attribute__ ((packed)) ctrl_ul_t;
+#endif
+
+/* This holds all information that is needed regarding a port */
+typedef struct {
+	u8					 update_flow_control;
+	ctrl_ul_t			 ctrl_ul;
+	ctrl_dl_t			 ctrl_dl;
+	struct kfifo		*fifo_ul;
+	u32					 dl_addr[2];
+	u32					 dl_size[2];
+	u8					 toggle_dl;
+	u32					 ul_addr[2];
+	u32					 ul_size[2];
+	u8					 toggle_ul;
+	u16					 token_dl;
+
+	struct tty_struct	*tty;
+	int					 tty_open_count;
+	struct semaphore	 tty_sem;
+	wait_queue_head_t	 tty_wait;
+	struct async_icount	 tty_icount;
+	int				  tty_index;
+	u32					 rx_data, tx_data;
+	u8					 tty_dont_flip;
+
+} port_t;
+
+/* Private data one for each card in the system */
+typedef struct {
+	u32					 base_addr;
+	u8					 closing;
+
+	/* Register addresses */
+	u32					 REG_IIR;
+	u32					 REG_FCR;
+	u32					 REG_IER;
+
+	volatile u16		 ier_last_written;
+	card_type_t 		 card_type;
+	config_table_t 		 config_table; /* Configuration table */
+	struct pci_dev 		*pdev;
+	port_t 				 port[NOZOMI_MAX_PORTS];
+	u8				  *send_buf;
+
+	struct tty_driver	tty_driver;
+
+#ifdef KERNEL_2_4
+	struct tty_struct  	*tty_table[NTTY_TTY_MINORS];
+	struct tq_struct	 tty_flip_queue;
+	s32					 tty_refcount;
+#endif
+#ifdef KERNEL_2_6
+	struct workqueue_struct *tty_flip_wq;
+	struct work_struct	tty_flip_wq_struct;
+#endif
+
+	struct termios		*tty_termios[NTTY_TTY_MINORS];
+	struct termios		*tty_termios_locked[NTTY_TTY_MINORS];
+	spinlock_t			 spin_mutex;
+
+	u32					open_ttys;
+	struct proc_dir_entry *proc_entry;
+
+} dc_t;
+
+/* This is a data packet that is read or written to/from card */
+typedef struct {
+	u32 size; /* size is the length of the data buffer */
+	u8 *data;
+} __attribute__ ((packed)) buf_t;
+
+/*	Function declarations */
+static int ntty_tty_init(dc_t *dc);
+
+static void tty_flip_queue_function(void *tmp_dc);
+
+/*	Global variables */
+static struct pci_device_id nozomi_pci_tbl[] __devinitdata = {
+	{VENDOR1, DEVICE1},
+	{0, }
+};
+
+/* Used to store interrupt variables */
+typedef struct {
+	volatile u16 read_iir; /* Holds current interrupt tokens */
+} irq_t;
+
+MODULE_DEVICE_TABLE(pci, nozomi_pci_tbl);
+
+/* Representing the pci device of interest */
+static int cards_found = 0;
+static int cards_initialized = 0;
+dc_t* my_dev = NULL;
+struct pci_dev *my_pdev = NULL;
+irq_t my_irq;
+
+#define CARD_CHECK(rval) { \
+	if (cards_found == 0 || cards_found != cards_initialized) {   \
+		ERR("Operation requested on uninitialized nozomi card."); \
+		return rval; \
+	} }
+
+
+static inline dc_t* get_dc_by_pdev(struct pci_dev* pdev) {
+	return my_dev;
+}
+
+static inline dc_t* get_dc_by_index(s32 index ) {
+	return my_dev;
+}
+
+static inline s32 get_index(struct tty_struct *tty) {
+#ifdef KERNEL_2_6
+	return tty->index;
+#else
+	return MINOR(tty->device) - tty->driver.minor_start;
+#endif
+}
+
+static inline port_t* get_port_by_tty(struct tty_struct *tty) {
+	return &my_dev->port[ get_index(tty) ];
+}
+
+static inline dc_t* get_dc_by_tty(struct tty_struct *tty ) {
+	return my_dev;
+}
+
+
+/* TODO: */
+/* -Optimize */
+/* -Rewrite cleaner */
+static void read_mem32(u32 *buf, u32 mem_addr_start, u32 size_bytes) {
+	u32 i = 0;
+	u32* ptr =  (u32*) mem_addr_start;
+	u16* buf16;
+
+	/* 2 bytes */
+	if (size_bytes == 2) {
+		buf16 = (u16*) buf;
+		*buf16 = readw( ptr );
+		return;
+	}
+
+	while (i < size_bytes) {
+		if ( size_bytes - i == 2) {
+			/* Handle 2 bytes in the end */
+			buf16 = (u16*) buf;
+			*(buf16) = readw( ptr );
+			i+=2;
+		} else {
+			/* Read 4 bytes */
+			*(buf) = readl( ptr );
+			i+=4;
+		}
+		buf++; ptr++;
+	}
+}
+
+/* TODO: */
+/* - Rewrite cleaner */
+/* - merge with read_mem32() */
+static void read_mem32_buf(u32 *buf, u32 mem_addr_start, u32 size_bytes) {
+#ifdef __ARMEB__
+	u32 i = 0;
+	u32* ptr =  (u32*) mem_addr_start;
+	u16* buf16;
+
+	/* 2 bytes */
+	if (size_bytes == 2) {
+		buf16 = (u16*) buf;
+		*buf16 = __le16_to_cpu( readw( ptr ));
+		return;
+	}
+
+	while (i < size_bytes) {
+		if ( size_bytes - i == 2) {
+			/* Handle 2 bytes in the end */
+			buf16 = (u16*) buf;
+			*(buf16) = __le16_to_cpu( readw( ptr ));
+			i+=2;
+		} else {
+			/* Read 4 bytes */
+			*(buf) = __le32_to_cpu( readl( ptr ));
+			i+=4;
+		}
+		buf++; ptr++;
+	}
+#else
+	read_mem32(buf, mem_addr_start, size_bytes);
+#endif
+}
+
+/* TODO: */
+/* -Optimize */
+/* -Rewrite cleaner */
+static u32 write_mem32(u32 mem_addr_start, u32 *buf, u32 size_bytes) {
+	u32 i = 0;
+	u32* ptr = (u32*) mem_addr_start;
+	u16* buf16;
+
+	/* 2 bytes */
+	if (size_bytes == 2) {
+		buf16 = (u16*) buf;
+		writew( *buf16, ptr);
+		return 2;
+	}
+
+	while (i < size_bytes) {
+		if ( size_bytes - i == 2) {
+			/* 2 bytes */
+			buf16 = (u16*) buf;
+			writew( *buf16, ptr);
+			i+=2;
+		} else {
+			/* 4 bytes */
+			writel( *buf, ptr );
+			i += 4;
+		}
+		buf++; ptr++;
+	}
+	return size_bytes;
+}
+
+/* Todo: */
+/* - Merge with write_mem32() */
+static u32 write_mem32_buf(u32 mem_addr_start, u32 *buf, u32 size_bytes) {
+#ifdef __ARMEB__
+	u32 i = 0;
+	u32* ptr = (u32*) mem_addr_start;
+	u16* buf16;
+
+	/* 2 bytes */
+	if (size_bytes == 2) {
+		buf16 = (u16*) buf;
+			writew( __le16_to_cpu(*buf16), ptr);
+		return 2;
+	}
+
+	while (i < size_bytes) {
+		if ( size_bytes - i == 2) {
+			/* 2 bytes */
+			buf16 = (u16*) buf;
+			writew( __le16_to_cpu(*buf16), ptr);
+			i+=2;
+		} else {
+			/* 4 bytes */
+			writel( __cpu_to_le32( *buf ), ptr );
+			i += 4;
+		}
+		buf++; ptr++;
+	}
+	return size_bytes;
+#else
+	return write_mem32(mem_addr_start, buf, size_bytes);
+#endif
+}
+
+/* Setup pointers to different channels and also setup buffer sizes. */
+static void setup_memory(dc_t *dc) {
+
+	u32 offset = dc->base_addr + dc->config_table.dl_start;
+	/* The length reported is including the length field of 4 bytes, hence subtract with 4. */
+	u16 buff_offset = 4;
+
+	/* Modem port dl configuration */
+	dc->port[PORT_MDM].dl_addr[CH_A] = offset;
+	dc->port[PORT_MDM].dl_addr[CH_B] = (offset += dc->config_table.dl_mdm_len1);
+	dc->port[PORT_MDM].dl_size[CH_A] = dc->config_table.dl_mdm_len1 - buff_offset;
+	dc->port[PORT_MDM].dl_size[CH_B] = dc->config_table.dl_mdm_len2 - buff_offset;
+
+	/* Diag port dl configuration */
+	dc->port[PORT_DIAG].dl_addr[CH_A] = (offset += dc->config_table.dl_mdm_len2);
+	dc->port[PORT_DIAG].dl_size[CH_A] = dc->config_table.dl_diag_len1 - buff_offset;
+	dc->port[PORT_DIAG].dl_addr[CH_B] = (offset += dc->config_table.dl_diag_len1);
+	dc->port[PORT_DIAG].dl_size[CH_B] = dc->config_table.dl_diag_len2 - buff_offset;
+
+	/* App1 port dl configuration */
+	dc->port[PORT_APP1].dl_addr[CH_A] = (offset += dc->config_table.dl_diag_len2);
+	dc->port[PORT_APP1].dl_size[CH_A] = dc->config_table.dl_app1_len - buff_offset;
+
+	/* App2 port dl configuration */
+	dc->port[PORT_APP2].dl_addr[CH_A] = (offset += dc->config_table.dl_app1_len);
+	dc->port[PORT_APP2].dl_size[CH_A] = dc->config_table.dl_app2_len - buff_offset;
+
+	/* Ctrl dl configuration */
+	dc->port[PORT_CTRL].dl_addr[CH_A] = (offset += dc->config_table.dl_app2_len);
+	dc->port[PORT_CTRL].dl_size[CH_A] = dc->config_table.dl_ctrl_len - buff_offset;
+
+
+	/* Modem Port ul configuration */
+	dc->port[PORT_MDM].ul_addr[CH_A] = (offset = dc->base_addr + dc->config_table.ul_start);
+	dc->port[PORT_MDM].ul_size[CH_A] = dc->config_table.ul_mdm_len1 - buff_offset;
+	dc->port[PORT_MDM].ul_addr[CH_B] = (offset += dc->config_table.ul_mdm_len1);
+	dc->port[PORT_MDM].ul_size[CH_B] = dc->config_table.ul_mdm_len2 - buff_offset;
+
+	/* Diag port ul configuration */
+	dc->port[PORT_DIAG].ul_addr[CH_A] = (offset += dc->config_table.ul_mdm_len2);
+	dc->port[PORT_DIAG].ul_size[CH_A] = dc->config_table.ul_diag_len - buff_offset;
+
+	/* App1 port ul configuration */
+	dc->port[PORT_APP1].ul_addr[CH_A] = (offset += dc->config_table.ul_diag_len);
+	dc->port[PORT_APP1].ul_size[CH_A] = dc->config_table.ul_app1_len - buff_offset;
+
+	/* App2 port ul configuration */
+	dc->port[PORT_APP2].ul_addr[CH_A] = (offset += dc->config_table.ul_app1_len);
+	dc->port[PORT_APP2].ul_size[CH_A] = dc->config_table.ul_app2_len - buff_offset;
+
+	/* Ctrl ul configuration */
+	dc->port[PORT_CTRL].ul_addr[CH_A] = (offset += dc->config_table.ul_app2_len);
+	dc->port[PORT_CTRL].ul_size[CH_A] = dc->config_table.ul_ctrl_len - buff_offset;
+	offset = dc->config_table.ul_start;
+}
+
+/* Dump config table under initalization phase */
+#ifdef NOZOMI_DEBUG
+static void dump_table(dc_t *dc) {
+	D3("signature: 0x%08X", dc->config_table.signature);
+	D3("version: 0x%04X", dc->config_table.version);
+	D3("product_information: 0x%04X", dc->config_table.product_information);
+	D3("toggle enabled: %d", dc->config_table.toggle.enabled);
+	D3("toggle up_mdm: %d", dc->config_table.toggle.mdm_ul);
+	D3("toggle dl_mdm: %d", dc->config_table.toggle.mdm_dl);
+	D3("toggle dl_dbg: %d", dc->config_table.toggle.diag_dl);
+
+	D3("dl_start: 0x%04X", dc->config_table.dl_start);
+	D3("dl_mdm_len0: 0x%04X, %d", dc->config_table.dl_mdm_len1, dc->config_table.dl_mdm_len1);
+	D3("dl_mdm_len1: 0x%04X, %d", dc->config_table.dl_mdm_len2, dc->config_table.dl_mdm_len2);
+	D3("dl_diag_len0: 0x%04X, %d", dc->config_table.dl_diag_len1, dc->config_table.dl_diag_len1);
+	D3("dl_diag_len1: 0x%04X, %d", dc->config_table.dl_diag_len2, dc->config_table.dl_diag_len2);
+	D3("dl_app1_len: 0x%04X, %d", dc->config_table.dl_app1_len, dc->config_table.dl_app1_len);
+	D3("dl_app2_len: 0x%04X, %d", dc->config_table.dl_app2_len, dc->config_table.dl_app2_len);
+	D3("dl_ctrl_len: 0x%04X, %d", dc->config_table.dl_ctrl_len, dc->config_table.dl_ctrl_len);
+	D3("ul_start: 0x%04X, %d", dc->config_table.ul_start, dc->config_table.ul_start);
+	D3("ul_mdm_len[0]: 0x%04X, %d", dc->config_table.ul_mdm_len1, dc->config_table.ul_mdm_len1);
+	D3("ul_mdm_len[1]: 0x%04X, %d", dc->config_table.ul_mdm_len2, dc->config_table.ul_mdm_len2);
+	D3("ul_diag_len: 0x%04X, %d", dc->config_table.ul_diag_len, dc->config_table.ul_diag_len);
+	D3("ul_app1_len: 0x%04X, %d", dc->config_table.ul_app1_len, dc->config_table.ul_app1_len);
+	D3("ul_app2_len: 0x%04X, %d", dc->config_table.ul_app2_len, dc->config_table.ul_app2_len);
+	D3("ul_ctrl_len: 0x%04X, %d", dc->config_table.ul_ctrl_len, dc->config_table.ul_ctrl_len);
+}
+#endif
+
+/* Read configuration table from card under intalization phase */
+/* Returns 1 if ok, else 0 */
+static int nozomi_read_config_table(dc_t *dc) {
+
+	if (cards_found > 0 && cards_found == cards_initialized) {
+		return 1;
+	}
+
+	GET_MEM( &dc->config_table, dc->base_addr + 0, sizeof(config_table_t));
+
+	/* D1( "0x%08X == 0x%08X ", dc->config_table.signature, CONFIG_MAGIC); */
+
+	if( dc->config_table.signature != CONFIG_MAGIC ) {
+		ERR("ConfigTable Bad! 0x%08X != 0x%08X", dc->config_table.signature, CONFIG_MAGIC);
+		return 0;
+	}
+
+	if( (dc->config_table.version == 0) || (dc->config_table.toggle.enabled == TOGGLE_VALID) ) {
+		int i;
+		INFO( "Second phase, configuring card");
+
+		setup_memory(dc);
+
+		dc->port[PORT_MDM].toggle_ul = dc->config_table.toggle.mdm_ul;
+		dc->port[PORT_MDM].toggle_dl = dc->config_table.toggle.mdm_dl;
+		dc->port[PORT_DIAG].toggle_dl = dc->config_table.toggle.diag_dl;
+		D1( "toggle ports: MDM UL:%d MDM DL:%d, DIAG DL:%d",
+			dc->port[PORT_MDM].toggle_ul,
+			dc->port[PORT_MDM].toggle_dl,
+			dc->port[PORT_DIAG].toggle_dl);
+
+#ifdef NOZOMI_DEBUG
+		dump_table(dc);
+#endif
+		for (i=PORT_MDM; i< MAX_PORT;i++) {
+			dc->port[i].fifo_ul = kfifo_alloc( FIFO_BUFFER_SIZE_UL, GFP_ATOMIC , NULL);
+			memset( &dc->port[i].ctrl_dl, 0, sizeof (ctrl_dl_t));
+			memset( &dc->port[i].ctrl_ul, 0, sizeof (ctrl_ul_t));
+		}
+
+		/* Enable control channel */
+		SET_IER( CTRL_DL, CTRL_DL );
+
+		INFO("Initialization OK!");
+		cards_initialized++;
+		return 1;
+	}
+
+	if( (dc->config_table.version > 0) && (dc->config_table.toggle.enabled != TOGGLE_VALID ) ) {
+		u32 offset = 0;
+		INFO( "First phase: pushing upload buffers, clearing download");
+
+		INFO("Version of card: %d", dc->config_table.version);
+
+		/* Here we should disable all I/O over F32. */
+		setup_memory(dc);
+
+		/* We should send ALL channel pair tokens back along with reset token */
+
+		/* push upload modem buffers */
+		SET_MEM( dc->port[PORT_MDM].ul_addr[CH_A], &offset, 4);
+		SET_MEM( dc->port[PORT_MDM].ul_addr[CH_B], &offset, 4);
+
+		SET_FCR( MDM_UL | DIAG_DL | MDM_DL );
+
+		D1( "First phase done");
+	}
+
+	return 1;
+}
+
+/* Enable uplink interrupts  */
+static void enable_transmit_ul( port_type_t port , dc_t *dc ) {
+
+	switch( port ) {
+		case PORT_MDM:  SET_IER( MDM_UL , MDM_UL  ); break;
+		case PORT_DIAG: SET_IER( DIAG_UL, DIAG_UL ); break;
+		case PORT_APP1: SET_IER( APP1_UL, APP1_UL ); break;
+		case PORT_APP2: SET_IER( APP2_UL, APP2_UL ); break;
+		case PORT_CTRL: SET_IER( CTRL_UL, CTRL_UL ); break;
+	default:
+		ERR("Called with wrong port?");
+		break;
+	};
+}
+
+/* Disable uplink interrupts  */
+static void disable_transmit_ul( port_type_t port , dc_t *dc ) {
+
+	switch( port ) {
+		case PORT_MDM:  SET_IER( 0 ,MDM_UL  ); break;
+		case PORT_DIAG: SET_IER( 0, DIAG_UL ); break;
+		case PORT_APP1: SET_IER( 0, APP1_UL ); break;
+		case PORT_APP2: SET_IER( 0, APP2_UL ); break;
+		case PORT_CTRL: SET_IER( 0, CTRL_UL ); break;
+	default:
+		ERR("Called with wrong port?");
+		break;
+	};
+}
+
+/* Enable downlink interrupts */
+static void enable_transmit_dl( port_type_t port , dc_t *dc ) {
+
+	switch( port ) {
+		case PORT_MDM:  SET_IER( MDM_DL , MDM_DL  ); break;
+		case PORT_DIAG: SET_IER( DIAG_DL, DIAG_DL ); break;
+		case PORT_APP1: SET_IER( APP1_DL, APP1_DL ); break;
+		case PORT_APP2: SET_IER( APP2_DL, APP2_DL ); break;
+		case PORT_CTRL: SET_IER( CTRL_DL, CTRL_DL ); break;
+	default:
+		ERR("Called with wrong port?");
+		break;
+	};
+}
+
+/* Disable downlink interrupts */
+static void disable_transmit_dl( port_type_t port , dc_t *dc ) {
+
+	switch( port ) {
+		case PORT_MDM:  SET_IER( 0 ,MDM_DL  ); break;
+		case PORT_DIAG: SET_IER( 0, DIAG_DL ); break;
+		case PORT_APP1: SET_IER( 0, APP1_DL ); break;
+		case PORT_APP2: SET_IER( 0, APP2_DL ); break;
+		case PORT_CTRL: SET_IER( 0, CTRL_DL ); break;
+	default:
+		ERR("Called with wrong port?");
+		break;
+	};
+}
+
+/* Return 1 - send buffer to card and ack. */
+/* Return 0 - don't ack, don't send buffer to card. */
+int send_data( port_type_t index, dc_t *dc ) {
+	u32	 size				 = 0;
+	port_t *port			 = &dc->port[index];
+	u8	 toggle				 = port->toggle_ul;
+	u32	 addr				 = port->ul_addr[toggle];
+	u32	 ul_size			 = port->ul_size[toggle];
+	struct tty_struct *tty   = port->tty;
+
+	if (index >= NTTY_TTY_MINORS) {
+		ERR("Called with wrong index?");
+		return 0;
+	}
+
+	/* Get data from tty and place in buf for now */
+	size = __kfifo_get( port->fifo_ul,	dc->send_buf, ul_size < SEND_BUF_MAX ? ul_size : SEND_BUF_MAX );
+
+	if (size == 0) {
+		D4("No more data to send, disable link:");
+		return 0;
+	}
+
+	port->tx_data += size;
+
+	/* DUMP(buf, size); */
+
+	/* Write length + data */
+	SET_MEM( addr, &size, 4 );
+	SET_MEM_BUF( addr + 4, dc->send_buf, size);
+
+	if (port->tty) {
+		if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) {
+			tty->ldisc.write_wakeup(tty);
+		}
+		wake_up_interruptible(&tty->write_wait);
+	}
+
+	return 1;
+}
+
+/* If all data has been read, return 1, else 0 */
+static int receive_data( port_type_t index, dc_t* dc ) {
+	u8 buf[RECEIVE_BUF_MAX]			 = {0};
+	int				size;
+	u32				offset		= 4;
+	port_t			   *port		 = &dc->port[index];
+	u8				 toggle		= port->toggle_dl;
+	u32				addr		  = port->dl_addr[toggle];
+	struct tty_struct *tty		   = port->tty;
+	int				i;
+
+	if ( !tty ) {
+		D1("tty not open for port: %d?", index);
+		return 1;
+	}
+
+	if (test_bit(TTY_DONT_FLIP, &tty->flags)) {
+		D6("TTY_DONT_FLIP set!! %d", index);
+		/* Here we disable interrupt for that port and schedule */
+/* 		task. Task wakes up a little bit later and enables interrupt.. */
+		port->tty_dont_flip = 1;
+		disable_transmit_dl(index, dc);
+#ifdef KERNEL_2_4
+		schedule_task(&dc->tty_flip_queue);
+#endif
+#ifdef KERNEL_2_6
+		if (!queue_work(dc->tty_flip_wq, &dc->tty_flip_wq_struct)) {
+			ERR("Call to queue_work() failed.");
+		}
+#endif
+		return 0;
+	}
+
+	GET_MEM( &size, addr, 4 );
+	/*  D1( "%d bytes port: %d", size, index); */
+
+	if ( test_bit( TTY_THROTTLED, & tty->flags) ) {
+		D1("No room in tty, don't read data, don't ack interrupt, disable interrupt");
+
+		/* disable interrupt in downlink... */
+		disable_transmit_dl(index, dc);
+		return 0;
+	}
+
+	if (size == 0) {
+		ERR("size == 0?");
+		return 1;
+	}
+
+	while( size > 0 ) {
+		GET_MEM_BUF(buf, addr + offset, 4);
+
+		i = 0;
+		while (i < 4 && size > 0) {
+			if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+				tty_flip_buffer_push(tty);
+			}
+			tty_insert_flip_char(tty, buf[i], TTY_NORMAL);
+			port->rx_data++;
+			i++;
+			size--;
+		}
+
+		offset += 4;
+	}
+
+	tty_flip_buffer_push(tty);
+
+	return 1;
+}
+
+/* Debug for interrupts */
+#ifdef NOZOMI_DEBUG
+static char* interrupt2str( u16 interrupt) {
+	static char buf[TMP_BUF_MAX];
+	char *p = buf;
+
+	interrupt & MDM_DL1 ? p += snprintf(p, TMP_BUF_MAX, "MDM_DL1 "):0;
+	interrupt & MDM_DL2 ? p += snprintf(p, TMP_BUF_MAX, "MDM_DL2 "):0;
+
+	interrupt & MDM_UL1 ? p += snprintf(p, TMP_BUF_MAX, "MDM_UL1 "):0;
+	interrupt & MDM_UL2 ? p += snprintf(p, TMP_BUF_MAX, "MDM_UL2 "):0;
+
+	interrupt & DIAG_DL1 ? p += snprintf(p, TMP_BUF_MAX, "DIAG_DL1 "):0;
+	interrupt & DIAG_DL2 ? p += snprintf(p, TMP_BUF_MAX, "DIAG_DL2 "):0;
+
+	interrupt & DIAG_UL ? p += snprintf(p, TMP_BUF_MAX, "DIAG_UL "):0;
+
+	interrupt & APP1_DL ? p += snprintf(p, TMP_BUF_MAX, "APP1_DL "):0;
+	interrupt & APP2_DL ? p += snprintf(p, TMP_BUF_MAX, "APP2_DL "):0;
+
+	interrupt & APP1_UL ? p += snprintf(p, TMP_BUF_MAX, "APP1_UL "):0;
+	interrupt & APP2_UL ? p += snprintf(p, TMP_BUF_MAX, "APP2_UL "):0;
+
+	interrupt & CTRL_DL ? p += snprintf(p, TMP_BUF_MAX, "CTRL_DL "):0;
+	interrupt & CTRL_UL ? p += snprintf(p, TMP_BUF_MAX, "CTRL_UL "):0;
+
+	interrupt & RESET ? p += snprintf(p, TMP_BUF_MAX, "RESET "):0;
+
+	return buf;
+}
+#endif
+
+/* Receive flow control */
+/* Return 1 - If ok, else 0 */
+static int receive_flow_control( dc_t *dc, irq_t *m) {
+	port_type_t port = PORT_MDM;
+	ctrl_dl_t ctrl_dl;
+	ctrl_dl_t old_ctrl;
+	u16 enable_ier = 0;
+
+	GET_MEM( &ctrl_dl, dc->port[PORT_CTRL].dl_addr[CH_A], 2);
+
+	switch( ctrl_dl.port ) {
+	case CTRL_CMD:
+		D1( "The Base Band sends this value as a response to a request for IMSI detach sent"
+		  " over the control channel uplink (see section 7.6.1).");
+		break;
+	case CTRL_MDM:  port = PORT_MDM;  enable_ier = MDM_DL;  break;
+	case CTRL_DIAG: port = PORT_DIAG; enable_ier = DIAG_DL; break;
+	case CTRL_APP1: port = PORT_APP1; enable_ier = APP1_DL; break;
+	case CTRL_APP2: port = PORT_APP2; enable_ier = APP2_DL; break;
+	default:
+		ERR("ERROR: flow control received for non-existing port");
+		return 0;
+	};
+
+	D1( "0x%04X->0x%04X", *((u16*) &dc->port[port].ctrl_dl), *((u16*)&ctrl_dl));
+
+	old_ctrl = dc->port[port].ctrl_dl;
+	dc->port[port].ctrl_dl = ctrl_dl;
+
+	if ( old_ctrl.CTS == 1 && ctrl_dl.CTS == 0 ) {
+		D1( "Disable interrupt (0x%04X) on port: %d", enable_ier, port);
+		disable_transmit_ul(port, dc);
+
+	} else if ( old_ctrl.CTS == 0 && ctrl_dl.CTS == 1 ) {
+
+		if ( __kfifo_len(dc->port[port].fifo_ul) ) {
+			D1( "Enable interrupt (0x%04X) on port: %d", enable_ier, port);
+			D1( "Data in buffer [%d], enable transmit! ", __kfifo_len(dc->port[port].fifo_ul) );
+			enable_transmit_ul( port, dc );
+		} else {
+			D1( "No data in buffer...");
+		}
+	}
+
+	if(*(u16*)&old_ctrl == *(u16*)&ctrl_dl)
+	{
+		D1( " No change in mctrl");
+		return 1;
+	}
+	/* Update statistics */
+	if(old_ctrl.CTS != ctrl_dl.CTS) {
+		dc->port[port].tty_icount.cts++;
+	}
+	if(old_ctrl.DSR != ctrl_dl.DSR) {
+		dc->port[port].tty_icount.dsr++;
+	}
+	if(old_ctrl.RI != ctrl_dl.RI) {
+		dc->port[port].tty_icount.rng++;
+	}
+	if(old_ctrl.DCD != ctrl_dl.DCD) {
+		dc->port[port].tty_icount.dcd++;
+	}
+	D1("port: %d DCD(%d), CTS(%d), RI(%d), DSR(%d)",
+	  port,
+	  dc->port[port].tty_icount.dcd, dc->port[port].tty_icount.cts,
+	  dc->port[port].tty_icount.rng, dc->port[port].tty_icount.dsr);
+
+	return 1;
+}
+
+/* TODO:  */
+/* - return ctrl_port_t */
+static u8 port2ctrl(port_type_t port) {
+	switch( port ) {
+	case PORT_MDM:
+		return CTRL_MDM;
+	case PORT_DIAG:
+		return CTRL_DIAG;
+	case PORT_APP1:
+		return CTRL_APP1;
+	case PORT_APP2:
+		return CTRL_APP2;
+	default:
+		ERR("ERROR: send flow control received for non-existing port");
+		return -1;
+	};
+	return -1;
+}
+
+/* Send flow control, can only update one channel at a time */
+/* Return 0 - If we have updated all flow control */
+/* Return 1 - If we need to update more flow control, ack current enable more */
+static int send_flow_control( dc_t *dc ) {
+	u32 i, more_flow_control_to_be_updated = 0;
+	u16* ctrl;
+
+	for( i=PORT_MDM; i<MAX_PORT ; i++ ) {
+		if( dc->port[i].update_flow_control ) {
+			if ( more_flow_control_to_be_updated ) {
+				/* We have more flow control to be updated */
+				return 1;
+			}
+			dc->port[i].ctrl_ul.port = port2ctrl(i);
+			ctrl = (u16*) &dc->port[i].ctrl_ul;
+			/* D1( "sending flow control 0x%04X for port %d, %d", (u16) *ctrl, i, dc->port[i].ctrl_ul.port ); */
+			SET_MEM( dc->port[PORT_CTRL].ul_addr[0], (u32*) ctrl, 2 );
+			dc->port[i].update_flow_control = 0;
+			more_flow_control_to_be_updated = 1;
+		}
+	}
+	return 0;
+}
+
+/* Handle donlink data, ports that are handled are modem and diagnostics */
+/* Return 1 - ok */
+/* Return 0 - toggle fields are out of sync */
+static int handle_data_dl(dc_t *dc, irq_t *m, port_type_t port, u8 *toggle, u16 mask1, u16 mask2) {
+
+	if ( *toggle == 0 && m->read_iir & mask1 ) {
+		if (receive_data( port, dc )) {
+			SET_FCR( mask1 );
+			*toggle = !(*toggle);
+		}
+
+		if ( m->read_iir & mask2 ) {
+			if (receive_data( port, dc )) {
+				SET_FCR( mask2 );
+				*toggle = !(*toggle);
+			}
+		}
+	} else if ( *toggle == 1 && m->read_iir & mask2 ) {
+		if (receive_data( port, dc )) {
+			SET_FCR( mask2 );
+			*toggle = !(*toggle);
+		}
+
+		if ( m->read_iir & mask1 ) {
+			if (receive_data( port, dc )) {
+				SET_FCR( mask1 );
+				*toggle = !(*toggle);
+			}
+		}
+	} else {
+		ERR("port out of sync!, toggle:%d", *toggle);
+		return 0;
+	}
+	return 1;
+}
+
+/* Handle uplink data, this is currently for the modem port */
+/* Return 1 - ok */
+/* Return 0 - toggle field are out of sync */
+static int handle_data_ul(dc_t *dc, irq_t *m, port_type_t port) {
+
+	u8 *toggle = &(dc->port[port].toggle_ul);
+
+	if ( *toggle==0 && m->read_iir & MDM_UL1 ) {
+		SET_IER( 0, MDM_UL );
+		if (send_data(port, dc)) {
+			SET_FCR( MDM_UL1 );
+			SET_IER( MDM_UL, MDM_UL);
+			*toggle = !*toggle;
+		}
+
+		if ( m->read_iir & MDM_UL2 ) {
+			SET_IER( 0, MDM_UL );
+			if (send_data(port, dc)) {
+				SET_FCR( MDM_UL2 );
+				SET_IER( MDM_UL, MDM_UL);
+				*toggle = !*toggle;
+			}
+		}
+
+	} else if ( *toggle==1 && m->read_iir & MDM_UL2 ) {
+		SET_IER( 0, MDM_UL );
+		if (send_data(port, dc)) {
+			SET_FCR( MDM_UL2 );
+			SET_IER( MDM_UL, MDM_UL);
+			*toggle = !*toggle;
+		}
+
+		if ( m->read_iir & MDM_UL1 ) {
+			SET_IER( 0, MDM_UL );
+			if (send_data(port, dc)) {
+				SET_FCR( MDM_UL1 );
+				SET_IER( MDM_UL, MDM_UL);
+				*toggle = !*toggle;
+			}
+		}
+	} else {
+		SET_FCR( m->read_iir & MDM_UL );
+		ERR("port out of sync!");
+		return 0;
+	}
+	return 1;
+}
+
+static irqreturn_t interrupt_handler(int irq, void *dev_id, struct pt_regs *regs) {
+	dc_t *dc = NULL;
+	irq_t* m = &my_irq;
+
+	if (my_dev && my_dev->pdev != dev_id) {
+		return IRQ_NONE;
+	}
+
+	if ( !(dc = get_dc_by_pdev(dev_id)) )  {
+		ERR("Could not find device context from pci_dev: %d", (u32) dev_id);
+		return IRQ_NONE;
+	}
+
+	GET_IIR( m->read_iir );
+
+	/* Just handle interrupt enabled in IER (by masking with dc->ier_last_written) */
+	m->read_iir &= dc->ier_last_written;
+
+	if (m->read_iir == 0) {
+		return IRQ_NONE;
+	}
+
+	if (dc == NULL ) {
+		ERR("ERROR!!");
+		return IRQ_NONE;
+	}
+
+	spin_lock(&dc->spin_mutex);
+
+	D4( "%s irq:0x%04X, prev:0x%04X", interrupt2str(m->read_iir), m->read_iir, dc->ier_last_written);
+
+	if ( m->read_iir & RESET) {
+		if( !nozomi_read_config_table(dc) ) {
+			SET_IER( 0, 0xFFFF);
+			ERR("ERR: Could not read status from card, we should disable interface");
+		} else {
+			SET_FCR( RESET );
+		}
+		goto exit_handler;  /* No more useful info if this was the reset interrupt. */
+	}
+	if ( m->read_iir & CTRL_UL ) {
+		D1( "CTRL_UL");
+		SET_IER( 0, CTRL_UL );
+		if ( send_flow_control(dc) ) {
+			SET_FCR( CTRL_UL );
+			SET_IER( CTRL_UL, CTRL_UL );
+		}
+	}
+	if ( m->read_iir & CTRL_DL ) {
+		receive_flow_control(dc, m);
+		SET_FCR( CTRL_DL );
+	}
+	if ( m->read_iir & MDM_DL ) {
+		if ( !(handle_data_dl(dc, m, PORT_MDM, &(dc->port[PORT_MDM].toggle_dl), MDM_DL1, MDM_DL2)) ) {
+			ERR("MDM_DL out of sync!");
+			goto exit_handler;
+		}
+	}
+	if ( m->read_iir & MDM_UL ) {
+		if ( !handle_data_ul(dc, m, PORT_MDM ) ) {
+			ERR("MDM_UL out of sync!");
+			goto exit_handler;
+		}
+	}
+	if ( m->read_iir & DIAG_DL ) {
+		if ( !(handle_data_dl(dc, m, PORT_DIAG, &(dc->port[PORT_DIAG].toggle_dl), DIAG_DL1, DIAG_DL2)) ) {
+			ERR("DIAG_DL out of sync!");
+			goto exit_handler;
+		}
+	}
+	if ( m->read_iir & DIAG_UL ) {
+		SET_IER( 0, DIAG_UL );
+		if( send_data( PORT_DIAG, dc ) ) {
+			SET_FCR( DIAG_UL );
+			SET_IER( DIAG_UL, DIAG_UL );
+		}
+	}
+	if ( m->read_iir & APP1_DL )  {
+		if (receive_data( PORT_APP1, dc ) ) {
+			SET_FCR( APP1_DL );
+		}
+	}
+	if ( m->read_iir & APP1_UL )  {
+		SET_IER( 0, APP1_UL );
+		if(send_data( PORT_APP1, dc )) {
+			SET_FCR( APP1_UL );
+			SET_IER( APP1_UL, APP1_UL );
+		}
+	}
+	if ( m->read_iir & APP2_DL ) {
+		if (receive_data( PORT_APP2, dc )) {
+			SET_FCR( APP2_DL );
+		}
+	}
+	if ( m->read_iir & APP2_UL ) {
+		SET_IER( 0, APP2_UL );
+		if(send_data( PORT_APP2, dc )) {
+			SET_FCR( APP2_UL );
+			SET_IER( APP2_UL, APP2_UL );
+		}
+	}
+
+  exit_handler:
+	spin_unlock(&dc->spin_mutex);
+	return IRQ_HANDLED;
+}
+
+/* Request a shared IRQ from system */
+static int nozomi_setup_interrupt(struct pci_dev *pdev) {
+
+	int rval = 0;
+
+	if ( (rval = request_irq( pdev->irq, &interrupt_handler, SA_SHIRQ, NOZOMI_NAME, pdev )) ) {
+		ERR("Cannot open because IRQ %d is already in use.", pdev->irq );
+		return rval;
+	}
+
+	return rval;
+}
+
+static void nozomi_get_card_type(dc_t *dc) {
+	u32 i, size=0;
+	for(i=0;i<6;i++) {
+		size += pci_resource_len(dc->pdev, i);
+	}
+
+	/* Assume card type F32_8 if no match */
+	dc->card_type = size == 2048 ? F32_2 : F32_8;
+
+	INFO("Card type is: %d", dc->card_type );
+}
+
+void nozomi_setup_private_data(dc_t *dc) {
+	u32 offset = dc->base_addr + dc->card_type/2;
+	int i;
+
+	dc->REG_FCR = offset + R_FCR;
+	dc->REG_IIR = offset + R_IIR;
+	dc->REG_IER = offset + R_IER;
+	dc->ier_last_written = 0;
+	dc->closing = 0;
+
+	dc->port[PORT_MDM ].token_dl = MDM_DL;
+	dc->port[PORT_DIAG].token_dl = DIAG_DL;
+	dc->port[PORT_APP1].token_dl = APP1_DL;
+	dc->port[PORT_APP2].token_dl = APP2_DL;
+
+	for(i=PORT_MDM;i<MAX_PORT;i++) {
+		dc->port[i].rx_data = dc->port[i].tx_data = 0;
+		dc->port[i].tty_dont_flip = 0;
+	}
+}
+
+
+static void tty_flip_queue_function(void *tmp_dc) {
+	dc_t *dc = (dc_t*) tmp_dc;
+	int i;
+
+	/* Enable interrupt for that port */
+	for(i=0;i<MAX_PORT;i++) {
+		if (dc->port[i].tty_dont_flip) {
+			D6("Enable for port: %d", i);
+			dc->port[i].tty_dont_flip = 0;
+			enable_transmit_dl(dc->port[i].tty_index, dc);
+		}
+	}
+}
+
+static int read_proc_card_type(char *buf, char **start, off_t offset, int len) {
+	dc_t *dc = get_dc_by_index(0);
+	len = 0;
+
+	len += sprintf(buf+len,"%d\n", dc->card_type);
+	return len;
+}
+
+static int read_proc_open_ttys(char *buf, char **start, off_t offset, int len) {
+	dc_t *dc = get_dc_by_index(0);
+	len = 0;
+
+	len += sprintf(buf+len,"%d\n", dc->open_ttys);
+	return len;
+}
+
+static int read_proc_version(char *buf, char **start, off_t offset, int len) {
+	len = 0;
+
+	len += sprintf(buf+len, "%s\n", VERSION_STRING);
+	return len;
+}
+
+static int read_proc_rtx(char *buf, char **start, off_t offset, int len) {
+	dc_t *dc = get_dc_by_index(0);
+	int i;
+
+	len = 0;
+
+
+	for(i=PORT_MDM;i<MAX_PORT;i++) {
+		len += sprintf(buf+len,"noz%d rx: %d, tx: %d\n", i, dc->port[i].rx_data, dc->port[i].tx_data);
+	}
+	return len;
+}
+
+static void make_proc_dirs(void) {
+	dc_t *dc = get_dc_by_index(0);
+
+	dc->proc_entry = proc_mkdir("nozomi", &proc_root);
+
+	/* Register the read_proc */
+	if ( !create_proc_info_entry("card_type",0,dc->proc_entry,read_proc_card_type) ) {
+		ERR("ERROR: failed to register read_procmem");
+	}
+	if ( !create_proc_info_entry("open_ttys",0,dc->proc_entry,read_proc_open_ttys) ) {
+		ERR("ERROR: failed to register read_procmem");
+	}
+	if ( !create_proc_info_entry("rtx",0,dc->proc_entry,read_proc_rtx) ) {
+		ERR("ERROR: failed to register read_procmem");
+	}
+	if ( !create_proc_info_entry("version",0,dc->proc_entry,read_proc_version) ) {
+		ERR("ERROR: failed to register read_procmem");
+	}
+}
+
+static void remove_proc_dirs(void) {
+	dc_t *dc = get_dc_by_index(0);
+
+	remove_proc_entry("card_type", dc->proc_entry);
+	remove_proc_entry("open_ttys", dc->proc_entry);
+	remove_proc_entry("rtx", dc->proc_entry);
+	remove_proc_entry("version", dc->proc_entry);
+	remove_proc_entry("nozomi", &proc_root);
+}
+
+static void send_reset_token(dc_t *dc) {
+
+	ctrl_ul_t ctrl;
+
+	/* Send 0x0001, command card to resend the reset token. */
+	/* This is to get the reset when the module is reloaded. */
+	ctrl.port = 0x00; ctrl.reserved = 0; ctrl.RTS=0; ctrl.DTR=1;
+	D1( "sending flow control 0x%04X",  * ((u16*) &ctrl) );
+
+
+	/*SET_MEM( dc->port[PORT_CTRL].ul_addr[0], (u32*) &ctrl, 2 );*/
+	/* hack alert :D (fixed address determined experimentally) */
+	SET_MEM( dc->base_addr + 0x000002FC, (u32*) &ctrl, 2 );
+	SET_FCR( CTRL_UL );	 /* push the token to the card. */
+	D1( "sent flow control 0x%04X",  * ((u16*) &ctrl) );
+}
+
+/* Allocate memory for one device */
+static int __devinit nozomi_card_init(struct pci_dev *pdev,	const struct pci_device_id *ent) {
+	int ret = -EIO;
+	dc_t *dc=NULL;
+
+	cards_found++;
+	INFO("Init, cards_found: %d", cards_found);
+
+	if (!(my_dev = kmalloc(sizeof(dc_t), GFP_KERNEL))) {
+		D1( "Could not allocate memory");
+		return -EIO;
+	}
+
+	memset(my_dev, 0, sizeof( dc_t ));
+
+	if (cards_found > 1) {
+		ERR("This driver only supports 1 device");
+		return -ENODEV;
+	}
+
+	my_dev->pdev = pdev;
+	dc = my_dev;
+
+	/* Find out what card type it is */
+	nozomi_get_card_type(dc);
+
+	if (pci_enable_device(dc->pdev)) {
+		ERR("Not possible to enable PCI Device");
+		return -ENODEV;
+	}
+
+	if ( (dc->base_addr = pci_resource_start(dc->pdev, 0)) == 0x0000) {
+		ERR("No I/O-Address for card detected");
+		ret = -ENODEV;
+		goto err_disable_device;
+	}
+
+	if (!(dc->base_addr = (u32) ioremap(dc->base_addr, dc->card_type))) {
+		ERR("No I/O-Address for card detected");
+		ret = -ENODEV;
+		goto err_disable_device;
+	}
+
+	dc->open_ttys=0;
+
+	nozomi_setup_private_data(dc);
+
+	if (pci_request_regions(dc->pdev, NOZOMI_NAME)) {
+		ERR("I/O address 0x%04x already in use",
+			 (int) /* nozomi_private.io_addr */ 0);
+		ret = -EIO;
+		goto err_disable_regions;
+	}
+
+	if ( !(dc->send_buf = kmalloc(SEND_BUF_MAX, GFP_KERNEL))) {
+		ERR("Could not allocate send buffer?");
+		goto err_disable_regions;
+	}
+
+	/* Disable all interrupts */
+	SET_IER( 0 , 0xFFFF );
+
+	/* Setup interrupt handler */
+	if (nozomi_setup_interrupt(dc->pdev)) {
+		ret = -EIO;
+		goto err_disable_regions;
+	}
+
+	D1( "base_addr: 0x%08X", dc->base_addr);
+
+#ifdef KERNEL_2_4
+	dc->tty_flip_queue.list.next = NULL;
+	dc->tty_flip_queue.list.prev = NULL;
+	dc->tty_flip_queue.sync	  = 0;
+	dc->tty_flip_queue.data	  = dc;
+	dc->tty_flip_queue.routine   = tty_flip_queue_function;
+#endif
+#ifdef KERNEL_2_6
+	if ( !(dc->tty_flip_wq = create_singlethread_workqueue(NOZOMI_NAME )) ) {
+		ERR("Could not create workqueue?");
+		BUG_ON(!dc->tty_flip_wq);
+		return -ENOMEM;
+	}
+	INIT_WORK( &dc->tty_flip_wq_struct, tty_flip_queue_function, (void*) dc);
+#endif
+
+	spin_lock_init(&dc->spin_mutex);
+
+	make_proc_dirs();
+
+	ntty_tty_init(dc);
+#if 0
+	if (!nozomi_read_config_table(dc)) {
+		ERR("Could not read config table (pass 1)");
+		return -ENODEV;
+	}
+	if (!nozomi_read_config_table(dc)) {
+		ERR("Could not read config table (pass 2)");
+		return -ENODEV;
+	}
+#endif
+	send_reset_token(dc);
+
+	/* Enable  RESET interrupt. */
+	SET_IER( RESET, 0xFFFF );
+
+	return 0;
+
+err_disable_regions:
+	pci_release_regions(pdev);
+	iounmap((void *)dc->base_addr );
+	dc->base_addr = 0;
+
+err_disable_device:
+	pci_disable_device(pdev);
+	if(my_dev) {
+		kfree( my_dev );
+	}
+	return ret;
+}
+
+static void tty_do_close(dc_t *dc, port_t *port) {
+
+	down(&port->tty_sem);
+
+	if ( !port->tty_open_count ) {
+		goto exit;
+	}
+
+	dc->open_ttys--;
+	port->tty_open_count--;
+#ifdef KERNEL_2_4
+	MOD_DEC_USE_COUNT;
+#endif
+
+	if ( port->tty_open_count == 0) {
+		D1("close: %d", port->token_dl );
+		SET_IER( 0,  port->token_dl );
+	}
+
+exit:
+	up(&port->tty_sem);
+}
+
+static void __exit tty_exit(void) {
+	int	 i;
+	dc_t   *dc = my_dev;
+
+	D1( " ");
+
+#ifdef KERNEL_2_6
+	for (i = 0; i < NTTY_TTY_MINORS; ++i)
+		tty_unregister_device(&dc->tty_driver, i);
+#endif
+
+	tty_unregister_driver(&dc->tty_driver);
+
+	for (i = 0; i < NTTY_TTY_MINORS; i++) {
+		while (dc->port[i].tty_open_count) {
+			tty_do_close(dc, &dc->port[i]);
+		}
+
+		dc->port[i].tty = NULL;
+	}
+}
+
+/* Deallocate memory for one device */
+static void __devexit nozomi_card_exit(struct pci_dev *pdev) {
+	int i;
+	dc_t *dc = get_dc_by_pdev(pdev);
+
+	/* Disable all interrupts */
+	SET_IER( 0, 0xFFFF);
+
+	/* Setup dc->reg addresses to we can use defines here */
+	nozomi_setup_private_data(dc);
+	send_reset_token(dc);
+
+	D1( "pci_release_regions");
+	pci_release_regions(pdev);
+
+	if(dc->base_addr)
+		iounmap((void *)dc->base_addr);
+
+	D1( "pci_disable_device");
+	pci_disable_device(pdev);
+
+	free_irq( pdev->irq, pdev );
+
+	for (i=PORT_MDM; i< MAX_PORT;i++) {
+		kfree ( dc->port[i].fifo_ul );
+	}
+
+	kfree( dc->send_buf );
+
+	tty_exit();
+
+	remove_proc_dirs();
+
+#ifdef KERNEL_2_6
+	destroy_workqueue(dc->tty_flip_wq);
+#endif
+
+	if (my_dev) {
+		kfree( my_dev );
+	}
+
+	cards_found--;
+	cards_initialized--;
+}
+
+static void set_rts(int index, int rts) {
+	dc_t *dc = get_dc_by_index(index);
+
+	dc->port[index].ctrl_ul.RTS = rts;
+	dc->port[index].update_flow_control = 1;
+	enable_transmit_ul(PORT_CTRL, dc);
+}
+
+static void set_dtr(int index, int dtr) {
+	dc_t *dc = get_dc_by_index(index);
+
+	D1("SETTING DTR index: %d, dtr: %d", index, dtr);
+
+	dc->port[index].ctrl_ul.DTR = dtr;
+	dc->port[index].update_flow_control = 1;
+	enable_transmit_ul(PORT_CTRL, dc);
+}
+
+
+/* ---------------------------------------------------------------------------------------------------
+   TTY code
+   ---------------------------------------------------------------------------------------------------*/
+
+
+/* Called when the userspace process opens the tty, /dev/noz*. */
+static int ntty_open(struct tty_struct *tty, struct file *file) {
+
+	s32 index = get_index(tty);
+	port_t *port = get_port_by_tty(tty);
+	dc_t *dc = get_dc_by_tty(tty);
+
+	CARD_CHECK(-ENODEV);
+
+	down(&port->tty_sem);
+
+	tty->low_latency  = 1;
+	tty->driver_data  = port;
+	port->tty		 = tty;
+	port->tty_index   = index;
+
+	port->tty_open_count++;
+	dc->open_ttys++;
+
+#ifdef KERNEL_2_4
+	MOD_INC_USE_COUNT;
+#endif
+
+	/* Enable interrupt downlink for channel */
+	if ( port->tty_open_count == 1) {
+		port->rx_data = port->tx_data = 0;
+		D1("open: %d", port->token_dl );
+		SET_IER( port->token_dl,  port->token_dl );
+	}
+
+	up(&port->tty_sem);
+
+	return 0;
+}
+
+/* Called when the userspace process close the tty, /dev/noz*. */
+static void ntty_close(struct tty_struct *tty, struct file *file) {
+	dc_t *dc;
+	CARD_CHECK();
+	dc = get_dc_by_tty(tty);
+	tty_do_close(dc, (port_t *) tty->driver_data);
+}
+
+/* called when the userspace process writes to the tty (/dev/noz*).  */
+/* Data is inserted into a fifo, which is then read and transfered to the modem. */
+#ifdef KERNEL_2_6
+static int ntty_write(struct tty_struct *tty, const unsigned char *buffer, int count) {
+#else
+static s32 ntty_write(struct tty_struct *tty, s32 from_user, const u8 *buffer, s32 count) {
+#endif
+	int				  rval = -EINVAL;
+	dc_t				*dc = get_dc_by_tty(tty);
+	port_t			  *port = (port_t *) tty->driver_data;
+
+	CARD_CHECK(rval);
+
+	/* D1( "WRITEx: %d, index = %d", count, index); */
+
+	if (! port) {
+		return -ENODEV;
+	}
+
+	down(&port->tty_sem);
+
+	if (! port->tty_open_count) {
+		D1( " ");
+		goto exit;
+	}
+
+#ifdef KERNEL_2_4
+	if (from_user) {
+		rval = __kfifo_put_user(port->fifo_ul, (unsigned char *) buffer, count);
+	} else {
+		rval = __kfifo_put(port->fifo_ul, (unsigned char *) buffer, count);
+	}
+#else
+	rval = __kfifo_put(port->fifo_ul, (unsigned char *) buffer, count);
+#endif
+
+	/* notify card */
+	if ( dc == NULL) {
+		D1( "No device context?");
+		goto exit;
+	}
+
+	// CTS is only valid on the modem channel
+	if ( port == &(dc->port[PORT_MDM]) ) {
+		if ( port->ctrl_dl.CTS ) {
+			D4( "Enable interrupt");
+			enable_transmit_ul(port->tty_index, dc );
+		} else {
+			ERR("CTS not active on modem port?");
+		}
+	} else {
+		enable_transmit_ul(port->tty_index, dc );
+	}
+
+exit:
+	up(&port->tty_sem);
+	return rval;
+}
+
+/* Calculate how much is left in device */
+/* This method is called by the upper tty layer. */
+/*   #according to sources N_TTY.c it expects a value >= 0 and does not check for negative values. */
+static int ntty_write_room(struct tty_struct *tty) {
+	port_t  *port = (port_t *) tty->driver_data;
+	int	  room = 0;
+/*	u32	  flags = 0; */
+/*	dc_t *dc = get_dc_by_tty(tty); */
+
+	CARD_CHECK(-ENODEV);
+
+	if (! port) {
+		return 0;
+	}
+
+	down(&port->tty_sem);
+
+	if (! port->tty_open_count) {
+		goto exit;
+	}
+
+	room = port->fifo_ul->size - __kfifo_len(port->fifo_ul);
+
+exit:
+	up(&port->tty_sem);
+	return room;
+}
+
+/* Sets termios flags, called by the tty layer. */
+static void ntty_set_termios(struct tty_struct *tty, struct termios *old_termios) {
+	unsigned int cflag;
+
+	CARD_CHECK();
+
+	cflag = tty->termios->c_cflag;
+
+	if (old_termios) {
+		if ((cflag == old_termios->c_cflag) &&
+			(RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
+			D1( " - nothing to change...");
+			goto exit_termios;
+		}
+	}
+
+	/* get the byte size */
+	switch (cflag & CSIZE) {
+		case CS5:
+			D1( " - data bits = 5");
+			break;
+		case CS6:
+			D1( " - data bits = 6");
+			break;
+		case CS7:
+			D1( " - data bits = 7");
+			break;
+		default:
+		case CS8:
+			D1( " - data bits = 8");
+			break;
+	}
+
+	/* determine the parity */
+	if (cflag & PARENB) {
+		if (cflag & PARODD) {
+			D1( " - parity = odd");
+		} else {
+			D1( " - parity = even");
+		}
+	} else {
+		D1( " - parity = none");
+	}
+
+	/* figure out the stop bits requested */
+	if (cflag & CSTOPB) {
+		D1( " - stop bits = 2");
+	} else {
+		D1( " - stop bits = 1");
+	}
+
+	/* figure out the hardware flow control settings */
+	if (cflag & CRTSCTS) {
+		D1( " - RTS/CTS is enabled");
+	} else {
+		D1( " - RTS/CTS is disabled");
+	}
+
+	/* determine software flow control */
+	/* if we are implementing XON/XOFF, set the start and
+	 * stop character in the device */
+	if (I_IXOFF(tty) || I_IXON(tty)) {
+#ifdef NOZOMI_DEBUG
+		unsigned char stop_char  = STOP_CHAR(tty);
+		unsigned char start_char = START_CHAR(tty);
+#endif
+		/* if we are implementing INBOUND XON/XOFF */
+		if (I_IXOFF(tty)) {
+			D1( " - INBOUND XON/XOFF is enabled, "
+				"XON = %2x, XOFF = %2x", start_char, stop_char);
+		} else {
+			D1( " - INBOUND XON/XOFF is disabled");
+		}
+
+		/* if we are implementing OUTBOUND XON/XOFF */
+		if (I_IXON(tty)) {
+			D1( " - OUTBOUND XON/XOFF is enabled, "
+				"XON = %2x, XOFF = %2x", start_char, stop_char);
+		} else {
+			D1( " - OUTBOUND XON/XOFF is disabled");
+		}
+	}
+
+  exit_termios:
+	return;
+}
+
+/* Gets io control parameters */
+static int ntty_tiocmget(struct tty_struct *tty, struct file *file) {
+	port_t *port = (port_t *) tty->driver_data;
+	ctrl_dl_t *ctrl_dl = &port->ctrl_dl;
+	ctrl_ul_t *ctrl_ul = &port->ctrl_ul;
+
+	return 0
+		| (ctrl_ul->RTS ? TIOCM_RTS : 0)
+		| (ctrl_ul->DTR ? TIOCM_DTR : 0)
+		| (ctrl_dl->DCD ? TIOCM_CAR : 0)
+		| (ctrl_dl->RI  ? TIOCM_RNG : 0)
+		| (ctrl_dl->DSR ? TIOCM_DSR : 0)
+		| (ctrl_dl->CTS ? TIOCM_CTS : 0);
+}
+
+/* Sets io controls parameters */
+static int ntty_tiocmset(struct tty_struct *tty, struct file *file, u32 arg) {
+	port_t *port = (port_t *) tty->driver_data;
+
+	set_rts(port->tty_index, (arg & TIOCM_RTS) ? 1 : 0);
+	set_dtr(port->tty_index, (arg & TIOCM_DTR) ? 1 : 0);
+
+	return 0;
+}
+
+static int ntty_ioctl_tiocmiwait(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) {
+	port_t *port = (port_t *) tty->driver_data;
+
+	if (cmd == TIOCMIWAIT) {
+		DECLARE_WAITQUEUE(wait, current);
+		struct async_icount cnow;
+		struct async_icount cprev;
+
+		cprev = port->tty_icount;
+		while (1) {
+			add_wait_queue(&port->tty_wait, &wait);
+			set_current_state(TASK_INTERRUPTIBLE);
+			schedule();
+			remove_wait_queue(&port->tty_wait, &wait);
+
+			/* see if a signal woke us up */
+			if (signal_pending(current))
+				return -ERESTARTSYS;
+
+			cnow = port->tty_icount;
+			if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
+				cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
+				return -EIO; /* no change => error */
+			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)) ) {
+				return 0;
+			}
+			cprev = cnow;
+		}
+
+	}
+	return -ENOIOCTLCMD;
+}
+
+static int ntty_ioctl_tiocgicount(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) {
+	port_t *port = (port_t *) tty->driver_data;
+
+	if (cmd == TIOCGICOUNT) {
+		struct async_icount cnow = port->tty_icount;
+		struct serial_icounter_struct icount;
+
+		icount.cts	= cnow.cts;
+		icount.dsr	= cnow.dsr;
+		icount.rng	= cnow.rng;
+		icount.dcd	= cnow.dcd;
+		icount.rx	= cnow.rx;
+		icount.tx	= cnow.tx;
+		icount.frame	= cnow.frame;
+		icount.overrun	= cnow.overrun;
+		icount.parity	= cnow.parity;
+		icount.brk	= cnow.brk;
+		icount.buf_overrun = cnow.buf_overrun;
+
+		if (copy_to_user((void *)arg, &icount, sizeof(icount)))
+			return -EFAULT;
+		return 0;
+	}
+	return -ENOIOCTLCMD;
+}
+
+static int ntty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) {
+	port_t *port = (port_t *) tty->driver_data;
+	int mask;
+	int rval = -ENOIOCTLCMD;
+
+	CARD_CHECK(rval);
+
+	D1("******** IOCTL, cmd: %d", cmd);
+
+
+	switch (cmd) {
+	case TCGETS:
+		D1( "IOCTL TCGETS ...");
+		rval = -ENOIOCTLCMD;
+		break;
+	case TCSETS:
+		D1( "IOCTL TCSETS ...");
+		rval = -ENOIOCTLCMD;
+		break;
+	case TIOCMIWAIT:
+		rval = ntty_ioctl_tiocmiwait(tty, file, cmd, arg);
+		break;
+	case TIOCGICOUNT:
+		rval =  ntty_ioctl_tiocgicount(tty, file, cmd, arg);
+		break;
+	case TIOCMGET:
+		rval = ntty_tiocmget(tty, file);
+		break;
+	case TIOCMSET:
+		rval = ntty_tiocmset(tty, file, arg);
+		break;
+	case TIOCMBIC:
+		if (get_user(mask, (unsigned long *) arg))
+			return -EFAULT;
+
+		if (mask & TIOCM_RTS)
+			set_rts(port->tty_index, 0);
+		if (mask & TIOCM_DTR)
+			set_dtr(port->tty_index, 0);
+		rval = 0;
+		break;
+   	case TIOCMBIS:
+		if (get_user(mask, (unsigned long *) arg))
+			return -EFAULT;
+
+		if (mask & TIOCM_RTS)
+			set_rts(port->tty_index, 1);
+		if (mask & TIOCM_DTR)
+			set_dtr(port->tty_index, 1);
+		rval = 0;
+		break;
+	case TCFLSH:
+		D1( "IOCTL TCFLSH ...");
+		rval = -ENOIOCTLCMD;
+		break;
+
+	default:
+		D1( "ERR: 0x%08X, %d", cmd, cmd);
+		break;
+	};
+
+	return rval;
+}
+
+/* Called by the upper tty layer when tty buffers are ready */
+/* to receive data again after a call to throttle. */
+static void ntty_unthrottle(struct tty_struct *tty) {
+	port_t  *port = (port_t *) tty->driver_data;
+	dc_t	*dc = get_dc_by_tty(tty);
+	u32	  flags;
+
+	CARD_CHECK();
+
+	D1( "UNTHROTTLE");
+	spin_lock_irqsave(&dc->spin_mutex, flags);
+	enable_transmit_dl(port->tty_index, dc);
+	set_rts(port->tty_index, 1);
+
+	spin_unlock_irqrestore(&dc->spin_mutex, flags);
+}
+
+/* Called by the upper tty layer when the tty buffers are almost full. */
+/* The driver should stop send more data. */
+static void ntty_throttle(struct tty_struct *tty) {
+	port_t  *port = (port_t *) tty->driver_data;
+	dc_t	*dc = get_dc_by_tty(tty);
+	u32	  flags;
+
+	CARD_CHECK();
+
+	D1( "THROTTLE");
+	spin_lock_irqsave(&dc->spin_mutex, flags);
+	set_rts(port->tty_index, 0);
+	spin_unlock_irqrestore(&dc->spin_mutex, flags);
+}
+
+static void ntty_put_char(struct tty_struct *tty, unsigned char c) {
+	CARD_CHECK();
+	D2("PUT CHAR Function: %c", c);
+}
+
+/* Returns number of chars in buffer, called by tty layer */
+static s32 ntty_chars_in_buffer(struct tty_struct *tty) {
+	port_t *port = (port_t *) tty->driver_data;
+	s32 rval;
+
+	CARD_CHECK(-ENODEV);
+
+	if (! port) {
+		rval = -ENODEV;
+		goto exit_in_buffer;
+	}
+
+	if (! port->tty_open_count) {
+		ERR("No tty open?");
+		rval = -ENODEV;
+		goto exit_in_buffer;
+	}
+
+	rval = __kfifo_len(port->fifo_ul);
+
+  exit_in_buffer:
+	return rval;
+}
+
+/* Initializes the tty */
+static int ntty_tty_init(dc_t *dc) {
+	struct tty_driver  *td = &dc->tty_driver;
+	int				 rval;
+	int				 i;
+
+	memset(td, 0, sizeof(struct tty_driver));
+
+	td->magic				 = TTY_DRIVER_MAGIC;
+	td->driver_name		   = NOZOMI_NAME_TTY;
+	td->name				  = "noz";
+	td->major				 = NTTY_TTY_MAJOR,
+	td->type				  = TTY_DRIVER_TYPE_SERIAL,
+	td->subtype			   = SERIAL_TYPE_NORMAL,
+	td->flags				 = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS,
+	td->init_termios		  = tty_std_termios;
+	td->init_termios.c_cflag  = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
+
+	td->num				   = MAX_PORT;
+	td->name_base			 = 0;
+	td->minor_start		   = 0;
+
+#ifdef KERNEL_2_4
+	td->table				 = dc->tty_table;
+	td->refcount			  = &dc->tty_refcount;
+#endif
+
+	td->termios			   = dc->tty_termios;
+	td->termios_locked		= dc->tty_termios_locked;
+
+	td->ioctl				 = ntty_ioctl;
+	td->open				  = ntty_open;
+	td->close				 = ntty_close;
+	td->write				 = ntty_write;
+	td->write_room			= ntty_write_room;
+	td->unthrottle			= ntty_unthrottle;
+	td->throttle			  = ntty_throttle;
+	td->set_termios		   = ntty_set_termios;
+	td->chars_in_buffer	   = ntty_chars_in_buffer;
+	td->put_char			  = ntty_put_char;
+
+	rval = tty_register_driver(td);
+
+	if (rval) {
+		printk(KERN_ERR "failed to register ntty tty driver");
+		D1( "failed to register ntty tty driver");
+		return rval;
+	}
+
+	for (i = 0; i < NTTY_TTY_MINORS; i++) {
+		init_MUTEX(&dc->port[i].tty_sem);
+		dc->port[i].tty_open_count = 0;
+		dc->port[i].tty = NULL;
+
+#ifdef KERNEL_2_6
+		tty_register_device(td, i, NULL);
+#endif
+	}
+
+	printk(KERN_INFO DRIVER_DESC " " NOZOMI_NAME_TTY);
+	D1( " ");
+	return rval;
+}
+
+/* Module initialization */
+static struct pci_driver nozomi_driver = {
+	.name		= NOZOMI_NAME,
+	.id_table	= nozomi_pci_tbl,
+	.probe		= nozomi_card_init,
+	.remove		= __devexit_p(nozomi_card_exit),
+};
+
+static int __init nozomi_init(void) {
+	int rval = 0;
+
+	rval = pci_module_init(&nozomi_driver);
+	printk(KERN_INFO "Initializing %s\n", VERSION_STRING);
+	return rval;
+}
+
+static void nozomi_exit(void) {
+	printk(KERN_INFO "Unloading %s", DRIVER_DESC);
+
+	pci_unregister_driver(&nozomi_driver);
+}
+
+module_init(nozomi_init);
+module_exit(nozomi_exit);
+
+#ifdef NOZOMI_DEBUG
+  MODULE_PARM(nzdebug, "i");
+#endif
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION( DRIVER_DESC );