firewire: new driver: nosy - IEEE 1394 traffic sniffer

This adds the traffic sniffer driver for Texas Instruments PCILynx/
PCILynx2 based cards.  The use cases for nosy are analysis of
nonstandard protocols and as an aid in development of drivers,
applications, or firmwares.

Author of the driver is Kristian Høgsberg.  Known contributers are
Jody McIntyre and Jonathan Woithe.

Nosy programs PCILynx chips to operate in promiscuous mode, which is a
feature that is not found in OHCI-1394 controllers.  Hence, only special
hardware as mentioned in the Kconfig help text is suitable for nosy.

This is only the kernelspace part of nosy.  There is a userspace
interface to it, called nosy-dump, proposed to be added into the tools/
subdirectory of the kernel sources in a subsequent change.  Kernelspace
and userspave component of nosy communicate via a 'misc' character
device file called /dev/nosy with a simple ioctl() and read() based
protocol, as described by nosy-user.h.

The files added here are taken from
git://anongit.freedesktop.org/~krh/nosy commit ee29be97 (2009-11-10)
with the following changes by Stefan Richter:
  - Kconfig and Makefile hunks are written from scratch.
  - Commented out version printk in nosy.c.
  - Included missing <linux/sched.h>, reported by Stephen Rothwell.

"git shortlog nosy{-user.h,.c,.h}" from nosy's git repository:

Jonathan Woithe (2):
      Nosy updates for recent kernels
      Fix uninitialised memory (needed for 2.6.31 kernel)

Kristian Høgsberg (5):
      Pull over nosy from mercurial repo.
      Use a misc device instead.
      Add simple AV/C decoder.
      Don't break down on big payloads.
      Set parent device for misc device.

As a low-level IEEE 1394 driver, its files are placed into
drivers/firewire/ although nosy is not part of the firewire driver
stack.

I am aware of the following literature from Texas Instruments about
PCILynx programming:
      SCPA020A - PCILynx 1394 to PCI Bus Interface TSB12LV21BPGF
                 Functional Specification
      SLLA023  - Initialization and Asynchronous Programming of the
                 TSB12LV21A 1394 Device

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Kristian Høgsberg <krh@bitplanet.net>

1 files changed, 695 insertions, 0 deletions

diff --git a/drivers/firewire/nosy.c b/drivers/firewire/nosy.c
new file mode 100644
index 000000000000..079710bf1197
--- /dev/null
+++ b/drivers/firewire/nosy.c
@@ -0,0 +1,695 @@
+/* -*- c-file-style: "linux" -*-
+ *
+ * nosy.c - Snoop mode driver for TI pcilynx 1394 controllers
+ * Copyright (C) 2002 Kristian Høgsberg
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h> /* required for linux/wait.h */
+#include <linux/wait.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/fs.h>
+#include <linux/poll.h>
+#include <linux/miscdevice.h>
+#include <asm/byteorder.h>
+#include <asm/atomic.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/timex.h>
+
+#include "nosy.h"
+#include "nosy-user.h"
+
+#define TCODE_PHY_PACKET		0x10
+#define PCI_DEVICE_ID_TI_PCILYNX	0x8000
+
+#define notify(s, args...) printk(KERN_NOTICE s, ## args)
+#define error(s, args...) printk(KERN_ERR s, ## args)
+#define debug(s, args...) printk(KERN_DEBUG s, ## args)
+
+static const char driver_name[] = "nosy";
+
+struct pcl_status {
+	unsigned int transfer_count : 13;
+	unsigned int reserved0 : 1;
+	unsigned int ack_type : 1;
+	unsigned int ack : 4;
+	unsigned int rcv_speed : 2;
+	unsigned int rcv_dma_channel : 6;
+	unsigned int packet_complete : 1;
+	unsigned int packet_error : 1;
+	unsigned int master_error : 1;
+	unsigned int iso_mode : 1;
+	unsigned int self_id : 1;
+};
+
+/* this is the physical layout of a PCL, its size is 128 bytes */
+struct pcl {
+        u32 next;
+        u32 async_error_next;
+        u32 user_data;
+        struct pcl_status pcl_status;
+        u32 remaining_transfer_count;
+        u32 next_data_buffer;
+        struct {
+                u32 control;
+                u32 pointer;
+        } buffer[13] __attribute__ ((packed));
+} __attribute__ ((packed));
+
+struct packet {
+	unsigned int length : 16;
+	unsigned int code : 16;
+	char data[0];
+};
+
+struct packet_buffer {
+	char *data;
+	size_t capacity;
+	long total_packet_count, lost_packet_count;
+	atomic_t size;
+	struct packet *head, *tail;	
+        wait_queue_head_t wait;	
+};
+
+struct pcilynx {
+	struct pci_dev *pci_device;
+	unsigned char *registers;
+
+	struct pcl *rcv_start_pcl, *rcv_pcl;
+	u32 *rcv_buffer;
+
+	dma_addr_t rcv_start_pcl_bus, rcv_pcl_bus, rcv_buffer_bus;
+
+	spinlock_t client_list_lock;
+	struct list_head client_list;
+
+	struct miscdevice misc;
+};
+
+
+struct client {
+	struct pcilynx *lynx;
+	unsigned long tcode_mask;
+	struct packet_buffer buffer;
+	struct list_head link;
+};
+
+#define MAX_MINORS 64
+struct pcilynx *minors[MAX_MINORS];
+
+static int
+packet_buffer_init(struct packet_buffer *buffer, size_t capacity)
+{
+	buffer->data = kmalloc(capacity, GFP_KERNEL);
+	if (buffer->data == NULL)
+		return -ENOMEM;
+	buffer->head = (struct packet *) buffer->data;
+	buffer->tail = (struct packet *) buffer->data;
+	buffer->capacity = capacity;
+	buffer->lost_packet_count = 0;
+	atomic_set(&buffer->size, 0);
+        init_waitqueue_head(&buffer->wait);
+
+	return 0;
+}
+
+static void
+packet_buffer_destroy(struct packet_buffer *buffer)
+{
+	kfree(buffer->data);
+}
+
+static int
+packet_buffer_get(struct packet_buffer *buffer, void *data, size_t user_length)
+{
+	size_t length;
+	char *end;
+
+	if (wait_event_interruptible(buffer->wait,
+				     atomic_read(&buffer->size) > 0))
+		return -ERESTARTSYS;
+
+	/* FIXME: Check length <= user_length. */
+
+	end = buffer->data + buffer->capacity;
+	length = buffer->head->length;
+
+	if (&buffer->head->data[length] < end) {
+		if (copy_to_user(data, buffer->head->data, length))
+			return -EFAULT;
+		buffer->head = (struct packet *) &buffer->head->data[length];
+	}
+	else {
+		size_t split = end - buffer->head->data;
+
+		if (copy_to_user(data, buffer->head->data, split))
+			return -EFAULT;
+		if (copy_to_user(data + split, buffer->data, length - split))
+			return -EFAULT;
+		buffer->head = (struct packet *) &buffer->data[length - split];
+	}
+
+	/* Decrease buffer->size as the last thing, since this is what
+	 * keeps the interrupt from overwriting the packet we are
+	 * retrieving from the buffer.  */
+
+	atomic_sub(sizeof (struct packet) + length, &buffer->size);
+
+	return length;
+}
+
+static void
+packet_buffer_put(struct packet_buffer *buffer, void *data, size_t length)
+{
+	char *end;
+
+	buffer->total_packet_count++;
+
+	if (buffer->capacity < 
+	    atomic_read(&buffer->size) + sizeof (struct packet) + length) {
+		buffer->lost_packet_count++;
+		return;
+	}
+
+	end = buffer->data + buffer->capacity;
+	buffer->tail->length = length;
+
+	if (&buffer->tail->data[length] < end) {
+		memcpy(buffer->tail->data, data, length);
+		buffer->tail = (struct packet *) &buffer->tail->data[length];
+	}
+	else {
+		size_t split = end - buffer->tail->data;
+
+		memcpy(buffer->tail->data, data, split);
+		memcpy(buffer->data, data + split, length - split);
+		buffer->tail = (struct packet *) &buffer->data[length - split];
+	}
+	
+	/* Finally, adjust buffer size and wake up userspace reader. */
+
+	atomic_add(sizeof (struct packet) + length, &buffer->size);
+	wake_up_interruptible(&buffer->wait);
+}
+
+static inline void
+reg_write(struct pcilynx *lynx, int offset, u32 data)
+{
+        writel(data, lynx->registers + offset);
+}
+
+static inline u32
+reg_read(struct pcilynx *lynx, int offset)
+{
+        return readl(lynx->registers + offset);
+}
+
+static inline void
+reg_set_bits(struct pcilynx *lynx, int offset, u32 mask)
+{
+        reg_write(lynx, offset, (reg_read(lynx, offset) | mask));
+}
+
+/* Maybe the pcl programs could be setup to just append data instead
+ * of using a whole packet. */
+
+static inline void 
+run_pcl(struct pcilynx *lynx, dma_addr_t pcl_bus, int dmachan)
+{
+        reg_write(lynx, DMA0_CURRENT_PCL + dmachan * 0x20, pcl_bus);
+        reg_write(lynx, DMA0_CHAN_CTRL + dmachan * 0x20,
+                  DMA_CHAN_CTRL_ENABLE | DMA_CHAN_CTRL_LINK);
+}
+
+static int
+set_phy_reg(struct pcilynx *lynx, int addr, int val)
+{
+        if (addr > 15) {
+                debug("%s: PHY register address %d out of range",
+		      __FUNCTION__, addr);
+                return -1;
+        }
+
+        if (val > 0xff) {
+                debug("%s: PHY register value %d out of range",
+		      __FUNCTION__, val);
+                return -1;
+        }
+
+        reg_write(lynx, LINK_PHY, LINK_PHY_WRITE |
+		  LINK_PHY_ADDR(addr) | LINK_PHY_WDATA(val));
+
+        return 0;
+}
+
+static void
+nosy_start_snoop(struct client *client)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&client->lynx->client_list_lock, flags);
+	list_add_tail(&client->link, &client->lynx->client_list);
+	spin_unlock_irqrestore(&client->lynx->client_list_lock, flags);
+}
+
+static void
+nosy_stop_snoop(struct client *client)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&client->lynx->client_list_lock, flags);
+	list_del(&client->link);
+	spin_unlock_irqrestore(&client->lynx->client_list_lock, flags);
+}
+
+static struct client *
+nosy_add_client(struct pcilynx *lynx)
+{
+	struct client *client;
+
+	client = kmalloc(sizeof *client, GFP_KERNEL);
+	client->tcode_mask = ~0;
+	client->lynx = lynx;
+	INIT_LIST_HEAD(&client->link);
+
+	if (packet_buffer_init(&client->buffer, 128 * 1024) < 0) {
+		kfree(client);
+		debug("Failed to allocate packet buffer\n");
+		return NULL;
+	}
+
+	return client;
+}
+
+static void
+nosy_remove_client(struct client *client)
+{
+	nosy_stop_snoop(client);
+	packet_buffer_destroy(&client->buffer);
+	kfree(client);
+}
+
+static int
+nosy_open(struct inode *inode, struct file *file)
+{
+	int minor = iminor(inode);
+
+	if (minor > MAX_MINORS || minors[minor] == NULL)
+		return -ENODEV;
+
+        file->private_data = nosy_add_client(minors[minor]);
+	if (file->private_data == NULL)
+		return -ENOMEM;
+	else
+		return 0;
+}
+
+static int
+nosy_release(struct inode *inode, struct file *file)
+{
+	nosy_remove_client(file->private_data);
+
+        return 0;
+}
+
+static unsigned int
+nosy_poll(struct file *file, poll_table *pt)
+{
+	struct client *client = file->private_data;
+
+	poll_wait(file, &client->buffer.wait, pt);
+
+	if (atomic_read(&client->buffer.size) > 0)
+		return POLLIN | POLLRDNORM;
+	else
+		return 0;
+}
+
+static ssize_t
+nosy_read(struct file *file, char *buffer, size_t count, loff_t *offset)
+{
+	struct client *client = file->private_data;
+
+	return packet_buffer_get(&client->buffer, buffer, count);
+}
+
+static int
+nosy_ioctl(struct inode *inode, struct file *file,
+	   unsigned int cmd, unsigned long arg)
+{
+	struct client *client = file->private_data;
+
+	switch (cmd) {
+	case NOSY_IOC_GET_STATS: {
+		struct nosy_stats stats;
+
+		stats.total_packet_count = client->buffer.total_packet_count;
+		stats.lost_packet_count = client->buffer.lost_packet_count;
+		if (copy_to_user((void *) arg, &stats, sizeof stats))
+			return -EFAULT;
+		else
+			return 0;
+	}
+	
+	case NOSY_IOC_START:
+		nosy_start_snoop(client);
+		return 0;
+
+	case NOSY_IOC_STOP:
+		nosy_stop_snoop(client);
+		return 0;
+
+	case NOSY_IOC_FILTER:
+		client->tcode_mask = arg;
+		return 0;
+
+	default:
+		return -EINVAL;
+		/* Flush buffer, configure filter. */
+	}
+}
+
+static struct file_operations nosy_ops = {
+	.owner =	THIS_MODULE,
+        .read =         nosy_read,
+	.ioctl =	nosy_ioctl,
+        .poll =         nosy_poll,
+        .open =         nosy_open,
+        .release =      nosy_release,
+};
+
+#define PHY_PACKET_SIZE 12 /* 1 payload, 1 inverse, 1 ack = 3 quadlets */
+
+struct link_packet {
+	unsigned int priority : 4;
+	unsigned int tcode : 4;
+	unsigned int rt : 2;
+	unsigned int tlabel : 6;
+	unsigned int destination : 16;
+};
+
+static void
+packet_handler(struct pcilynx *lynx)
+{
+	unsigned long flags;
+	struct list_head *pos;
+	struct client *client;
+	unsigned long tcode_mask;
+	size_t length;
+	struct link_packet *packet;
+	struct timeval tv;
+
+	/* FIXME: Also report rcv_speed. */
+
+	length = lynx->rcv_pcl->pcl_status.transfer_count;
+	packet = (struct link_packet *) &lynx->rcv_buffer[1];
+
+	do_gettimeofday(&tv);
+	lynx->rcv_buffer[0] = tv.tv_usec;
+
+	if (length == PHY_PACKET_SIZE)
+		tcode_mask = 1 << TCODE_PHY_PACKET;
+	else
+		tcode_mask = 1 << packet->tcode;
+
+	spin_lock_irqsave(&lynx->client_list_lock, flags);
+
+	list_for_each(pos, &lynx->client_list) {
+		client = list_entry(pos, struct client, link);
+		if (client->tcode_mask & tcode_mask)
+			packet_buffer_put(&client->buffer, 
+					  lynx->rcv_buffer, length + 4);
+	}
+
+	spin_unlock_irqrestore(&lynx->client_list_lock, flags);
+}
+
+static void
+bus_reset_handler(struct pcilynx *lynx)
+{
+	unsigned long flags;
+	struct list_head *pos;
+	struct client *client;
+	struct timeval tv;
+
+	do_gettimeofday(&tv);
+
+	spin_lock_irqsave(&lynx->client_list_lock, flags);
+
+	list_for_each(pos, &lynx->client_list) {
+		client = list_entry(pos, struct client, link);
+		packet_buffer_put(&client->buffer, &tv.tv_usec, 4);
+	}
+
+	spin_unlock_irqrestore(&lynx->client_list_lock, flags);
+}
+
+
+
+static irqreturn_t
+irq_handler(int irq, void *device)
+{
+	struct pcilynx *lynx = (struct pcilynx *) device;
+	u32 pci_int_status;
+	
+        pci_int_status = reg_read(lynx, PCI_INT_STATUS);
+
+	if ((pci_int_status & PCI_INT_INT_PEND) == 0)
+		/* Not our interrupt, bail out quickly. */
+		return IRQ_NONE;
+
+	if ((pci_int_status & PCI_INT_P1394_INT) != 0) {
+		u32 link_int_status;
+
+		link_int_status = reg_read(lynx, LINK_INT_STATUS);
+		reg_write(lynx, LINK_INT_STATUS, link_int_status);
+
+		if ((link_int_status & LINK_INT_PHY_BUSRESET) > 0)
+			bus_reset_handler(lynx);
+	}
+
+	/* Clear the PCI_INT_STATUS register only after clearing the
+	 * LINK_INT_STATUS register; otherwise the PCI_INT_P1394 will
+	 * be set again immediately. */
+
+	reg_write(lynx, PCI_INT_STATUS, pci_int_status);
+
+	if ((pci_int_status & PCI_INT_DMA0_HLT) > 0) {
+		packet_handler(lynx);
+		run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void
+remove_card(struct pci_dev *dev)
+{
+        struct pcilynx *lynx;
+
+        lynx = pci_get_drvdata(dev);
+        if (!lynx)
+		return;
+        pci_set_drvdata(dev, NULL);
+
+	reg_write(lynx, PCI_INT_ENABLE, 0);
+	free_irq(lynx->pci_device->irq, lynx);
+
+	pci_free_consistent(lynx->pci_device, sizeof (struct pcl), 
+			    lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
+	pci_free_consistent(lynx->pci_device, sizeof (struct pcl), 
+			    lynx->rcv_pcl, lynx->rcv_pcl_bus);
+	pci_free_consistent(lynx->pci_device, PAGE_SIZE,
+			    lynx->rcv_buffer, lynx->rcv_buffer_bus);
+
+	iounmap(lynx->registers);
+
+	minors[lynx->misc.minor] = NULL;
+	misc_deregister(&lynx->misc);
+
+	kfree(lynx);
+}
+
+#define RCV_BUFFER_SIZE (16 * 1024)
+
+#define FAIL(s, args...)			\
+	do {					\
+		error(s, ## args);		\
+		return err;			\
+	} while (0)
+
+static int __devinit
+add_card(struct pci_dev *dev, const struct pci_device_id *unused)
+{
+        struct pcilynx *lynx;
+	u32 p, end;
+	int err, i;
+
+        err = -ENXIO;
+
+        if (pci_set_dma_mask(dev, 0xffffffff))
+                FAIL("DMA address limits not supported "
+		     "for PCILynx hardware.\n");
+        if (pci_enable_device(dev))
+                FAIL("Failed to enable PCILynx hardware.\n");
+        pci_set_master(dev);
+
+        err = -ENOMEM;
+
+	lynx = kzalloc(sizeof *lynx, GFP_KERNEL);
+        if (lynx == NULL)
+		FAIL("Failed to allocate control structure memory.\n");
+
+        lynx->pci_device = dev;
+        pci_set_drvdata(dev, lynx);
+
+	spin_lock_init(&lynx->client_list_lock);
+	INIT_LIST_HEAD(&lynx->client_list);
+
+        lynx->registers = ioremap_nocache(pci_resource_start(dev, 0),
+                                          PCILYNX_MAX_REGISTER);
+
+        lynx->rcv_start_pcl = pci_alloc_consistent(lynx->pci_device,
+						   sizeof(struct pcl),
+						   &lynx->rcv_start_pcl_bus);
+        lynx->rcv_pcl = pci_alloc_consistent(lynx->pci_device,
+					     sizeof(struct pcl),
+					     &lynx->rcv_pcl_bus);
+        lynx->rcv_buffer = pci_alloc_consistent(lynx->pci_device, RCV_BUFFER_SIZE,
+						&lynx->rcv_buffer_bus);
+        if (lynx->rcv_start_pcl == NULL ||
+	    lynx->rcv_pcl == NULL ||
+	    lynx->rcv_buffer == NULL)
+		/* FIXME: do proper error handling. */
+                FAIL("Failed to allocate receive buffer.\n");
+
+	lynx->rcv_start_pcl->next = lynx->rcv_pcl_bus;
+        lynx->rcv_pcl->next = PCL_NEXT_INVALID;
+        lynx->rcv_pcl->async_error_next = PCL_NEXT_INVALID;
+
+        lynx->rcv_pcl->buffer[0].control =
+		PCL_CMD_RCV | PCL_BIGENDIAN | 2044;
+        lynx->rcv_pcl->buffer[0].pointer = lynx->rcv_buffer_bus + 4;
+	p = lynx->rcv_buffer_bus + 2048;
+	end = lynx->rcv_buffer_bus + RCV_BUFFER_SIZE;
+	for (i = 1; p < end; i++, p += 2048) {
+		lynx->rcv_pcl->buffer[i].control =
+			PCL_CMD_RCV | PCL_BIGENDIAN | 2048;
+		lynx->rcv_pcl->buffer[i].pointer = p;
+	}
+	lynx->rcv_pcl->buffer[i - 1].control |= PCL_LAST_BUFF;
+
+        reg_set_bits(lynx, MISC_CONTROL, MISC_CONTROL_SWRESET);
+        /* Fix buggy cards with autoboot pin not tied low: */
+        reg_write(lynx, DMA0_CHAN_CTRL, 0);
+        reg_write(lynx, DMA_GLOBAL_REGISTER, 0x00 << 24);
+
+#if 0
+        /* now, looking for PHY register set */
+        if ((get_phy_reg(lynx, 2) & 0xe0) == 0xe0) {
+                lynx->phyic.reg_1394a = 1;
+                PRINT(KERN_INFO, lynx->id,
+                      "found 1394a conform PHY (using extended register set)");
+                lynx->phyic.vendor = get_phy_vendorid(lynx);
+                lynx->phyic.product = get_phy_productid(lynx);
+        } else {
+                lynx->phyic.reg_1394a = 0;
+                PRINT(KERN_INFO, lynx->id, "found old 1394 PHY");
+        }
+#endif
+
+	/* Setup the general receive FIFO max size. */
+	reg_write(lynx, FIFO_SIZES, 255);
+
+        reg_set_bits(lynx, PCI_INT_ENABLE, PCI_INT_DMA_ALL);
+
+        reg_write(lynx, LINK_INT_ENABLE,
+		  LINK_INT_PHY_TIME_OUT | LINK_INT_PHY_REG_RCVD |
+		  LINK_INT_PHY_BUSRESET | LINK_INT_IT_STUCK |
+		  LINK_INT_AT_STUCK | LINK_INT_SNTRJ |
+		  LINK_INT_TC_ERR | LINK_INT_GRF_OVER_FLOW |
+		  LINK_INT_ITF_UNDER_FLOW | LINK_INT_ATF_UNDER_FLOW);
+
+	/* Disable the L flag in self ID packets. */
+	set_phy_reg(lynx, 4, 0);
+
+	/* Put this baby into snoop mode */
+	reg_set_bits(lynx, LINK_CONTROL, LINK_CONTROL_SNOOP_ENABLE);
+
+	run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
+
+        if (request_irq(dev->irq, irq_handler, IRQF_SHARED, driver_name, lynx))
+		FAIL("Failed to allocate shared interrupt %d.", dev->irq);
+
+	lynx->misc.parent = &dev->dev;
+	lynx->misc.minor = MISC_DYNAMIC_MINOR;
+	lynx->misc.name = "nosy";
+	lynx->misc.fops = &nosy_ops;
+	if (misc_register(&lynx->misc))
+                FAIL("Failed to register misc char device.");
+	minors[lynx->misc.minor] = lynx;
+
+	notify("Initialized PCILynx IEEE1394 card, irq=%d\n", dev->irq);
+
+        return 0;
+}
+
+static struct pci_device_id pci_table[] __devinitdata = {
+	{
+                .vendor =    PCI_VENDOR_ID_TI,
+                .device =    PCI_DEVICE_ID_TI_PCILYNX,
+                .subvendor = PCI_ANY_ID,
+                .subdevice = PCI_ANY_ID,
+	},
+	{ }	/* Terminating entry */
+};
+
+static struct pci_driver lynx_pci_driver = {
+	.name =		(char *) driver_name,
+	.id_table =	pci_table,
+	.probe =	add_card,
+	.remove =	__devexit_p(remove_card),
+};
+
+MODULE_AUTHOR("Kristian Høgsberg");
+MODULE_DESCRIPTION("Snoop mode driver for TI pcilynx 1394 controllers");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, pci_table);
+
+static int __init nosy_init(void)
+{
+ 	/* notify("Loaded %s version %s.\n", driver_name, VERSION); */
+
+        return pci_register_driver(&lynx_pci_driver);
+}
+
+static void __exit nosy_cleanup(void)
+{
+        pci_unregister_driver(&lynx_pci_driver);
+
+	notify("Unloaded %s.\n", driver_name);
+}
+
+
+module_init(nosy_init);
+module_exit(nosy_cleanup);