firewire: nosy: endianess fixes and annotations
[linux-2.6.git] / drivers / firewire / nosy.c
1 /*
2  * nosy - Snoop mode driver for TI PCILynx 1394 controllers
3  * Copyright (C) 2002-2007 Kristian Høgsberg
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software Foundation,
17  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18  */
19
20 #include <linux/errno.h>
21 #include <linux/fs.h>
22 #include <linux/init.h>
23 #include <linux/interrupt.h>
24 #include <linux/io.h>
25 #include <linux/kernel.h>
26 #include <linux/kref.h>
27 #include <linux/miscdevice.h>
28 #include <linux/module.h>
29 #include <linux/mutex.h>
30 #include <linux/pci.h>
31 #include <linux/poll.h>
32 #include <linux/sched.h> /* required for linux/wait.h */
33 #include <linux/slab.h>
34 #include <linux/spinlock.h>
35 #include <linux/timex.h>
36 #include <linux/uaccess.h>
37 #include <linux/wait.h>
38
39 #include <asm/atomic.h>
40 #include <asm/byteorder.h>
41
42 #include "nosy.h"
43 #include "nosy-user.h"
44
45 #define TCODE_PHY_PACKET                0x10
46 #define PCI_DEVICE_ID_TI_PCILYNX        0x8000
47
48 #define notify(s, args...) printk(KERN_NOTICE s, ## args)
49 #define error(s, args...) printk(KERN_ERR s, ## args)
50 #define debug(s, args...) printk(KERN_DEBUG s, ## args)
51
52 static char driver_name[] = KBUILD_MODNAME;
53
54 /* this is the physical layout of a PCL, its size is 128 bytes */
55 struct pcl {
56         __le32 next;
57         __le32 async_error_next;
58         u32 user_data;
59         __le32 pcl_status;
60         __le32 remaining_transfer_count;
61         __le32 next_data_buffer;
62         struct {
63                 __le32 control;
64                 __le32 pointer;
65         } buffer[13];
66 };
67
68 struct packet {
69         unsigned int length;
70         char data[0];
71 };
72
73 struct packet_buffer {
74         char *data;
75         size_t capacity;
76         long total_packet_count, lost_packet_count;
77         atomic_t size;
78         struct packet *head, *tail;
79         wait_queue_head_t wait;
80 };
81
82 struct pcilynx {
83         struct pci_dev *pci_device;
84         __iomem char *registers;
85
86         struct pcl *rcv_start_pcl, *rcv_pcl;
87         __le32 *rcv_buffer;
88
89         dma_addr_t rcv_start_pcl_bus, rcv_pcl_bus, rcv_buffer_bus;
90
91         spinlock_t client_list_lock;
92         struct list_head client_list;
93
94         struct miscdevice misc;
95         struct list_head link;
96         struct kref kref;
97 };
98
99 static inline struct pcilynx *
100 lynx_get(struct pcilynx *lynx)
101 {
102         kref_get(&lynx->kref);
103
104         return lynx;
105 }
106
107 static void
108 lynx_release(struct kref *kref)
109 {
110         kfree(container_of(kref, struct pcilynx, kref));
111 }
112
113 static inline void
114 lynx_put(struct pcilynx *lynx)
115 {
116         kref_put(&lynx->kref, lynx_release);
117 }
118
119 struct client {
120         struct pcilynx *lynx;
121         u32 tcode_mask;
122         struct packet_buffer buffer;
123         struct list_head link;
124 };
125
126 static DEFINE_MUTEX(card_mutex);
127 static LIST_HEAD(card_list);
128
129 static int
130 packet_buffer_init(struct packet_buffer *buffer, size_t capacity)
131 {
132         buffer->data = kmalloc(capacity, GFP_KERNEL);
133         if (buffer->data == NULL)
134                 return -ENOMEM;
135         buffer->head = (struct packet *) buffer->data;
136         buffer->tail = (struct packet *) buffer->data;
137         buffer->capacity = capacity;
138         buffer->lost_packet_count = 0;
139         atomic_set(&buffer->size, 0);
140         init_waitqueue_head(&buffer->wait);
141
142         return 0;
143 }
144
145 static void
146 packet_buffer_destroy(struct packet_buffer *buffer)
147 {
148         kfree(buffer->data);
149 }
150
151 static int
152 packet_buffer_get(struct client *client, char __user *data, size_t user_length)
153 {
154         struct packet_buffer *buffer = &client->buffer;
155         size_t length;
156         char *end;
157
158         if (wait_event_interruptible(buffer->wait,
159                                      atomic_read(&buffer->size) > 0) ||
160                                      list_empty(&client->lynx->link))
161                 return -ERESTARTSYS;
162
163         if (atomic_read(&buffer->size) == 0)
164                 return -ENODEV;
165
166         /* FIXME: Check length <= user_length. */
167
168         end = buffer->data + buffer->capacity;
169         length = buffer->head->length;
170
171         if (&buffer->head->data[length] < end) {
172                 if (copy_to_user(data, buffer->head->data, length))
173                         return -EFAULT;
174                 buffer->head = (struct packet *) &buffer->head->data[length];
175         } else {
176                 size_t split = end - buffer->head->data;
177
178                 if (copy_to_user(data, buffer->head->data, split))
179                         return -EFAULT;
180                 if (copy_to_user(data + split, buffer->data, length - split))
181                         return -EFAULT;
182                 buffer->head = (struct packet *) &buffer->data[length - split];
183         }
184
185         /*
186          * Decrease buffer->size as the last thing, since this is what
187          * keeps the interrupt from overwriting the packet we are
188          * retrieving from the buffer.
189          */
190         atomic_sub(sizeof(struct packet) + length, &buffer->size);
191
192         return length;
193 }
194
195 static void
196 packet_buffer_put(struct packet_buffer *buffer, void *data, size_t length)
197 {
198         char *end;
199
200         buffer->total_packet_count++;
201
202         if (buffer->capacity <
203             atomic_read(&buffer->size) + sizeof(struct packet) + length) {
204                 buffer->lost_packet_count++;
205                 return;
206         }
207
208         end = buffer->data + buffer->capacity;
209         buffer->tail->length = length;
210
211         if (&buffer->tail->data[length] < end) {
212                 memcpy(buffer->tail->data, data, length);
213                 buffer->tail = (struct packet *) &buffer->tail->data[length];
214         } else {
215                 size_t split = end - buffer->tail->data;
216
217                 memcpy(buffer->tail->data, data, split);
218                 memcpy(buffer->data, data + split, length - split);
219                 buffer->tail = (struct packet *) &buffer->data[length - split];
220         }
221
222         /* Finally, adjust buffer size and wake up userspace reader. */
223
224         atomic_add(sizeof(struct packet) + length, &buffer->size);
225         wake_up_interruptible(&buffer->wait);
226 }
227
228 static inline void
229 reg_write(struct pcilynx *lynx, int offset, u32 data)
230 {
231         writel(data, lynx->registers + offset);
232 }
233
234 static inline u32
235 reg_read(struct pcilynx *lynx, int offset)
236 {
237         return readl(lynx->registers + offset);
238 }
239
240 static inline void
241 reg_set_bits(struct pcilynx *lynx, int offset, u32 mask)
242 {
243         reg_write(lynx, offset, (reg_read(lynx, offset) | mask));
244 }
245
246 /*
247  * Maybe the pcl programs could be set up to just append data instead
248  * of using a whole packet.
249  */
250 static inline void
251 run_pcl(struct pcilynx *lynx, dma_addr_t pcl_bus,
252                            int dmachan)
253 {
254         reg_write(lynx, DMA0_CURRENT_PCL + dmachan * 0x20, pcl_bus);
255         reg_write(lynx, DMA0_CHAN_CTRL + dmachan * 0x20,
256                   DMA_CHAN_CTRL_ENABLE | DMA_CHAN_CTRL_LINK);
257 }
258
259 static int
260 set_phy_reg(struct pcilynx *lynx, int addr, int val)
261 {
262         if (addr > 15) {
263                 debug("PHY register address %d out of range\n", addr);
264                 return -1;
265         }
266
267         if (val > 0xff) {
268                 debug("PHY register value %d out of range\n", val);
269                 return -1;
270         }
271
272         reg_write(lynx, LINK_PHY, LINK_PHY_WRITE |
273                   LINK_PHY_ADDR(addr) | LINK_PHY_WDATA(val));
274
275         return 0;
276 }
277
278 static int
279 nosy_open(struct inode *inode, struct file *file)
280 {
281         int minor = iminor(inode);
282         struct client *client;
283         struct pcilynx *tmp, *lynx = NULL;
284
285         mutex_lock(&card_mutex);
286         list_for_each_entry(tmp, &card_list, link)
287                 if (tmp->misc.minor == minor) {
288                         lynx = lynx_get(tmp);
289                         break;
290                 }
291         mutex_unlock(&card_mutex);
292         if (lynx == NULL)
293                 return -ENODEV;
294
295         client = kmalloc(sizeof *client, GFP_KERNEL);
296         if (client == NULL)
297                 goto fail;
298
299         client->tcode_mask = ~0;
300         client->lynx = lynx;
301         INIT_LIST_HEAD(&client->link);
302
303         if (packet_buffer_init(&client->buffer, 128 * 1024) < 0)
304                 goto fail;
305
306         file->private_data = client;
307
308         return 0;
309 fail:
310         kfree(client);
311         lynx_put(lynx);
312
313         return -ENOMEM;
314 }
315
316 static int
317 nosy_release(struct inode *inode, struct file *file)
318 {
319         struct client *client = file->private_data;
320         struct pcilynx *lynx = client->lynx;
321
322         spin_lock_irq(&lynx->client_list_lock);
323         list_del_init(&client->link);
324         spin_unlock_irq(&lynx->client_list_lock);
325
326         packet_buffer_destroy(&client->buffer);
327         kfree(client);
328         lynx_put(lynx);
329
330         return 0;
331 }
332
333 static unsigned int
334 nosy_poll(struct file *file, poll_table *pt)
335 {
336         struct client *client = file->private_data;
337         unsigned int ret = 0;
338
339         poll_wait(file, &client->buffer.wait, pt);
340
341         if (atomic_read(&client->buffer.size) > 0)
342                 ret = POLLIN | POLLRDNORM;
343
344         if (list_empty(&client->lynx->link))
345                 ret |= POLLHUP;
346
347         return ret;
348 }
349
350 static ssize_t
351 nosy_read(struct file *file, char __user *buffer, size_t count, loff_t *offset)
352 {
353         struct client *client = file->private_data;
354
355         return packet_buffer_get(client, buffer, count);
356 }
357
358 static long
359 nosy_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
360 {
361         struct client *client = file->private_data;
362         spinlock_t *client_list_lock = &client->lynx->client_list_lock;
363         struct nosy_stats stats;
364
365         switch (cmd) {
366         case NOSY_IOC_GET_STATS:
367                 spin_lock_irq(client_list_lock);
368                 stats.total_packet_count = client->buffer.total_packet_count;
369                 stats.lost_packet_count  = client->buffer.lost_packet_count;
370                 spin_unlock_irq(client_list_lock);
371
372                 if (copy_to_user((void __user *) arg, &stats, sizeof stats))
373                         return -EFAULT;
374                 else
375                         return 0;
376
377         case NOSY_IOC_START:
378                 spin_lock_irq(client_list_lock);
379                 list_add_tail(&client->link, &client->lynx->client_list);
380                 spin_unlock_irq(client_list_lock);
381
382                 return 0;
383
384         case NOSY_IOC_STOP:
385                 spin_lock_irq(client_list_lock);
386                 list_del_init(&client->link);
387                 spin_unlock_irq(client_list_lock);
388
389                 return 0;
390
391         case NOSY_IOC_FILTER:
392                 spin_lock_irq(client_list_lock);
393                 client->tcode_mask = arg;
394                 spin_unlock_irq(client_list_lock);
395
396                 return 0;
397
398         default:
399                 return -EINVAL;
400                 /* Flush buffer, configure filter. */
401         }
402 }
403
404 static const struct file_operations nosy_ops = {
405         .owner =                THIS_MODULE,
406         .read =                 nosy_read,
407         .unlocked_ioctl =       nosy_ioctl,
408         .poll =                 nosy_poll,
409         .open =                 nosy_open,
410         .release =              nosy_release,
411 };
412
413 #define PHY_PACKET_SIZE 12 /* 1 payload, 1 inverse, 1 ack = 3 quadlets */
414
415 static void
416 packet_irq_handler(struct pcilynx *lynx)
417 {
418         struct client *client;
419         u32 tcode_mask, tcode;
420         size_t length;
421         struct timeval tv;
422
423         /* FIXME: Also report rcv_speed. */
424
425         length = __le32_to_cpu(lynx->rcv_pcl->pcl_status) & 0x00001fff;
426         tcode  = __le32_to_cpu(lynx->rcv_buffer[1]) >> 4 & 0xf;
427
428         do_gettimeofday(&tv);
429         lynx->rcv_buffer[0] = (__force __le32)tv.tv_usec;
430
431         if (length == PHY_PACKET_SIZE)
432                 tcode_mask = 1 << TCODE_PHY_PACKET;
433         else
434                 tcode_mask = 1 << tcode;
435
436         spin_lock(&lynx->client_list_lock);
437
438         list_for_each_entry(client, &lynx->client_list, link)
439                 if (client->tcode_mask & tcode_mask)
440                         packet_buffer_put(&client->buffer,
441                                           lynx->rcv_buffer, length + 4);
442
443         spin_unlock(&lynx->client_list_lock);
444 }
445
446 static void
447 bus_reset_irq_handler(struct pcilynx *lynx)
448 {
449         struct client *client;
450         struct timeval tv;
451
452         do_gettimeofday(&tv);
453
454         spin_lock(&lynx->client_list_lock);
455
456         list_for_each_entry(client, &lynx->client_list, link)
457                 packet_buffer_put(&client->buffer, &tv.tv_usec, 4);
458
459         spin_unlock(&lynx->client_list_lock);
460 }
461
462 static irqreturn_t
463 irq_handler(int irq, void *device)
464 {
465         struct pcilynx *lynx = device;
466         u32 pci_int_status;
467
468         pci_int_status = reg_read(lynx, PCI_INT_STATUS);
469
470         if (pci_int_status == ~0)
471                 /* Card was ejected. */
472                 return IRQ_NONE;
473
474         if ((pci_int_status & PCI_INT_INT_PEND) == 0)
475                 /* Not our interrupt, bail out quickly. */
476                 return IRQ_NONE;
477
478         if ((pci_int_status & PCI_INT_P1394_INT) != 0) {
479                 u32 link_int_status;
480
481                 link_int_status = reg_read(lynx, LINK_INT_STATUS);
482                 reg_write(lynx, LINK_INT_STATUS, link_int_status);
483
484                 if ((link_int_status & LINK_INT_PHY_BUSRESET) > 0)
485                         bus_reset_irq_handler(lynx);
486         }
487
488         /* Clear the PCI_INT_STATUS register only after clearing the
489          * LINK_INT_STATUS register; otherwise the PCI_INT_P1394 will
490          * be set again immediately. */
491
492         reg_write(lynx, PCI_INT_STATUS, pci_int_status);
493
494         if ((pci_int_status & PCI_INT_DMA0_HLT) > 0) {
495                 packet_irq_handler(lynx);
496                 run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
497         }
498
499         return IRQ_HANDLED;
500 }
501
502 static void
503 remove_card(struct pci_dev *dev)
504 {
505         struct pcilynx *lynx = pci_get_drvdata(dev);
506         struct client *client;
507
508         mutex_lock(&card_mutex);
509         list_del_init(&lynx->link);
510         misc_deregister(&lynx->misc);
511         mutex_unlock(&card_mutex);
512
513         reg_write(lynx, PCI_INT_ENABLE, 0);
514         free_irq(lynx->pci_device->irq, lynx);
515
516         spin_lock_irq(&lynx->client_list_lock);
517         list_for_each_entry(client, &lynx->client_list, link)
518                 wake_up_interruptible(&client->buffer.wait);
519         spin_unlock_irq(&lynx->client_list_lock);
520
521         pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
522                             lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
523         pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
524                             lynx->rcv_pcl, lynx->rcv_pcl_bus);
525         pci_free_consistent(lynx->pci_device, PAGE_SIZE,
526                             lynx->rcv_buffer, lynx->rcv_buffer_bus);
527
528         iounmap(lynx->registers);
529         pci_disable_device(dev);
530         lynx_put(lynx);
531 }
532
533 #define RCV_BUFFER_SIZE (16 * 1024)
534
535 static int __devinit
536 add_card(struct pci_dev *dev, const struct pci_device_id *unused)
537 {
538         struct pcilynx *lynx;
539         u32 p, end;
540         int ret, i;
541
542         if (pci_set_dma_mask(dev, 0xffffffff)) {
543                 error("DMA address limits not supported "
544                       "for PCILynx hardware\n");
545                 return -ENXIO;
546         }
547         if (pci_enable_device(dev)) {
548                 error("Failed to enable PCILynx hardware\n");
549                 return -ENXIO;
550         }
551         pci_set_master(dev);
552
553         lynx = kzalloc(sizeof *lynx, GFP_KERNEL);
554         if (lynx == NULL) {
555                 error("Failed to allocate control structure memory\n");
556                 ret = -ENOMEM;
557                 goto fail_disable;
558         }
559         lynx->pci_device = dev;
560         pci_set_drvdata(dev, lynx);
561
562         spin_lock_init(&lynx->client_list_lock);
563         INIT_LIST_HEAD(&lynx->client_list);
564         kref_init(&lynx->kref);
565
566         lynx->registers = ioremap_nocache(pci_resource_start(dev, 0),
567                                           PCILYNX_MAX_REGISTER);
568
569         lynx->rcv_start_pcl = pci_alloc_consistent(lynx->pci_device,
570                                 sizeof(struct pcl), &lynx->rcv_start_pcl_bus);
571         lynx->rcv_pcl = pci_alloc_consistent(lynx->pci_device,
572                                 sizeof(struct pcl), &lynx->rcv_pcl_bus);
573         lynx->rcv_buffer = pci_alloc_consistent(lynx->pci_device,
574                                 RCV_BUFFER_SIZE, &lynx->rcv_buffer_bus);
575         if (lynx->rcv_start_pcl == NULL ||
576             lynx->rcv_pcl == NULL ||
577             lynx->rcv_buffer == NULL) {
578                 error("Failed to allocate receive buffer\n");
579                 ret = -ENOMEM;
580                 goto fail_deallocate;
581         }
582         lynx->rcv_start_pcl->next       = cpu_to_le32(lynx->rcv_pcl_bus);
583         lynx->rcv_pcl->next             = cpu_to_le32(PCL_NEXT_INVALID);
584         lynx->rcv_pcl->async_error_next = cpu_to_le32(PCL_NEXT_INVALID);
585
586         lynx->rcv_pcl->buffer[0].control =
587                         cpu_to_le32(PCL_CMD_RCV | PCL_BIGENDIAN | 2044);
588         lynx->rcv_pcl->buffer[0].pointer =
589                         cpu_to_le32(lynx->rcv_buffer_bus + 4);
590         p = lynx->rcv_buffer_bus + 2048;
591         end = lynx->rcv_buffer_bus + RCV_BUFFER_SIZE;
592         for (i = 1; p < end; i++, p += 2048) {
593                 lynx->rcv_pcl->buffer[i].control =
594                         cpu_to_le32(PCL_CMD_RCV | PCL_BIGENDIAN | 2048);
595                 lynx->rcv_pcl->buffer[i].pointer = cpu_to_le32(p);
596         }
597         lynx->rcv_pcl->buffer[i - 1].control |= cpu_to_le32(PCL_LAST_BUFF);
598
599         reg_set_bits(lynx, MISC_CONTROL, MISC_CONTROL_SWRESET);
600         /* Fix buggy cards with autoboot pin not tied low: */
601         reg_write(lynx, DMA0_CHAN_CTRL, 0);
602         reg_write(lynx, DMA_GLOBAL_REGISTER, 0x00 << 24);
603
604 #if 0
605         /* now, looking for PHY register set */
606         if ((get_phy_reg(lynx, 2) & 0xe0) == 0xe0) {
607                 lynx->phyic.reg_1394a = 1;
608                 PRINT(KERN_INFO, lynx->id,
609                       "found 1394a conform PHY (using extended register set)");
610                 lynx->phyic.vendor = get_phy_vendorid(lynx);
611                 lynx->phyic.product = get_phy_productid(lynx);
612         } else {
613                 lynx->phyic.reg_1394a = 0;
614                 PRINT(KERN_INFO, lynx->id, "found old 1394 PHY");
615         }
616 #endif
617
618         /* Setup the general receive FIFO max size. */
619         reg_write(lynx, FIFO_SIZES, 255);
620
621         reg_set_bits(lynx, PCI_INT_ENABLE, PCI_INT_DMA_ALL);
622
623         reg_write(lynx, LINK_INT_ENABLE,
624                   LINK_INT_PHY_TIME_OUT | LINK_INT_PHY_REG_RCVD |
625                   LINK_INT_PHY_BUSRESET | LINK_INT_IT_STUCK |
626                   LINK_INT_AT_STUCK | LINK_INT_SNTRJ |
627                   LINK_INT_TC_ERR | LINK_INT_GRF_OVER_FLOW |
628                   LINK_INT_ITF_UNDER_FLOW | LINK_INT_ATF_UNDER_FLOW);
629
630         /* Disable the L flag in self ID packets. */
631         set_phy_reg(lynx, 4, 0);
632
633         /* Put this baby into snoop mode */
634         reg_set_bits(lynx, LINK_CONTROL, LINK_CONTROL_SNOOP_ENABLE);
635
636         run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
637
638         if (request_irq(dev->irq, irq_handler, IRQF_SHARED,
639                         driver_name, lynx)) {
640                 error("Failed to allocate shared interrupt %d\n", dev->irq);
641                 ret = -EIO;
642                 goto fail_deallocate;
643         }
644
645         lynx->misc.parent = &dev->dev;
646         lynx->misc.minor = MISC_DYNAMIC_MINOR;
647         lynx->misc.name = "nosy";
648         lynx->misc.fops = &nosy_ops;
649
650         mutex_lock(&card_mutex);
651         ret = misc_register(&lynx->misc);
652         if (ret) {
653                 error("Failed to register misc char device\n");
654                 mutex_unlock(&card_mutex);
655                 goto fail_free_irq;
656         }
657         list_add_tail(&lynx->link, &card_list);
658         mutex_unlock(&card_mutex);
659
660         notify("Initialized PCILynx IEEE1394 card, irq=%d\n", dev->irq);
661
662         return 0;
663
664 fail_free_irq:
665         reg_write(lynx, PCI_INT_ENABLE, 0);
666         free_irq(lynx->pci_device->irq, lynx);
667
668 fail_deallocate:
669         if (lynx->rcv_start_pcl)
670                 pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
671                                 lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
672         if (lynx->rcv_pcl)
673                 pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
674                                 lynx->rcv_pcl, lynx->rcv_pcl_bus);
675         if (lynx->rcv_buffer)
676                 pci_free_consistent(lynx->pci_device, PAGE_SIZE,
677                                 lynx->rcv_buffer, lynx->rcv_buffer_bus);
678         iounmap(lynx->registers);
679         kfree(lynx);
680
681 fail_disable:
682         pci_disable_device(dev);
683
684         return ret;
685 }
686
687 static struct pci_device_id pci_table[] __devinitdata = {
688         {
689                 .vendor =    PCI_VENDOR_ID_TI,
690                 .device =    PCI_DEVICE_ID_TI_PCILYNX,
691                 .subvendor = PCI_ANY_ID,
692                 .subdevice = PCI_ANY_ID,
693         },
694         { }     /* Terminating entry */
695 };
696
697 static struct pci_driver lynx_pci_driver = {
698         .name =         driver_name,
699         .id_table =     pci_table,
700         .probe =        add_card,
701         .remove =       remove_card,
702 };
703
704 MODULE_AUTHOR("Kristian Hoegsberg");
705 MODULE_DESCRIPTION("Snoop mode driver for TI pcilynx 1394 controllers");
706 MODULE_LICENSE("GPL");
707 MODULE_DEVICE_TABLE(pci, pci_table);
708
709 static int __init nosy_init(void)
710 {
711         return pci_register_driver(&lynx_pci_driver);
712 }
713
714 static void __exit nosy_cleanup(void)
715 {
716         pci_unregister_driver(&lynx_pci_driver);
717
718         notify("Unloaded %s.\n", driver_name);
719 }
720
721 module_init(nosy_init);
722 module_exit(nosy_cleanup);