drivers/atm: Correct code taking the size of a pointer
[linux-2.6.git] / drivers / atm / solos-pci.c
1 /*
2  * Driver for the Solos PCI ADSL2+ card, designed to support Linux by
3  *  Traverse Technologies -- http://www.traverse.com.au/
4  *  Xrio Limited          -- http://www.xrio.com/
5  *
6  *
7  * Copyright © 2008 Traverse Technologies
8  * Copyright © 2008 Intel Corporation
9  *
10  * Authors: Nathan Williams <nathan@traverse.com.au>
11  *          David Woodhouse <dwmw2@infradead.org>
12  *          Treker Chen <treker@xrio.com>
13  *
14  * This program is free software; you can redistribute it and/or
15  * modify it under the terms of the GNU General Public License
16  * version 2, as published by the Free Software Foundation.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21  * GNU General Public License for more details.
22  */
23
24 #define DEBUG
25 #define VERBOSE_DEBUG
26
27 #include <linux/interrupt.h>
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/errno.h>
31 #include <linux/ioport.h>
32 #include <linux/types.h>
33 #include <linux/pci.h>
34 #include <linux/atm.h>
35 #include <linux/atmdev.h>
36 #include <linux/skbuff.h>
37 #include <linux/sysfs.h>
38 #include <linux/device.h>
39 #include <linux/kobject.h>
40 #include <linux/firmware.h>
41 #include <linux/ctype.h>
42 #include <linux/swab.h>
43
44 #define VERSION "0.07"
45 #define PTAG "solos-pci"
46
47 #define CONFIG_RAM_SIZE 128
48 #define FLAGS_ADDR      0x7C
49 #define IRQ_EN_ADDR     0x78
50 #define FPGA_VER        0x74
51 #define IRQ_CLEAR       0x70
52 #define WRITE_FLASH     0x6C
53 #define PORTS           0x68
54 #define FLASH_BLOCK     0x64
55 #define FLASH_BUSY      0x60
56 #define FPGA_MODE       0x5C
57 #define FLASH_MODE      0x58
58 #define TX_DMA_ADDR(port)       (0x40 + (4 * (port)))
59 #define RX_DMA_ADDR(port)       (0x30 + (4 * (port)))
60
61 #define DATA_RAM_SIZE   32768
62 #define BUF_SIZE        2048
63 #define OLD_BUF_SIZE    4096 /* For FPGA versions <= 2*/
64 #define FPGA_PAGE       528 /* FPGA flash page size*/
65 #define SOLOS_PAGE      512 /* Solos flash page size*/
66 #define FPGA_BLOCK      (FPGA_PAGE * 8) /* FPGA flash block size*/
67 #define SOLOS_BLOCK     (SOLOS_PAGE * 8) /* Solos flash block size*/
68
69 #define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
70 #define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
71 #define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
72
73 #define RX_DMA_SIZE     2048
74
75 #define FPGA_VERSION(a,b) (((a) << 8) + (b))
76 #define LEGACY_BUFFERS  2
77 #define DMA_SUPPORTED   4
78
79 static int reset = 0;
80 static int atmdebug = 0;
81 static int firmware_upgrade = 0;
82 static int fpga_upgrade = 0;
83 static int db_firmware_upgrade = 0;
84 static int db_fpga_upgrade = 0;
85
86 struct pkt_hdr {
87         __le16 size;
88         __le16 vpi;
89         __le16 vci;
90         __le16 type;
91 };
92
93 struct solos_skb_cb {
94         struct atm_vcc *vcc;
95         uint32_t dma_addr;
96 };
97
98
99 #define SKB_CB(skb)             ((struct solos_skb_cb *)skb->cb)
100
101 #define PKT_DATA        0
102 #define PKT_COMMAND     1
103 #define PKT_POPEN       3
104 #define PKT_PCLOSE      4
105 #define PKT_STATUS      5
106
107 struct solos_card {
108         void __iomem *config_regs;
109         void __iomem *buffers;
110         int nr_ports;
111         int tx_mask;
112         struct pci_dev *dev;
113         struct atm_dev *atmdev[4];
114         struct tasklet_struct tlet;
115         spinlock_t tx_lock;
116         spinlock_t tx_queue_lock;
117         spinlock_t cli_queue_lock;
118         spinlock_t param_queue_lock;
119         struct list_head param_queue;
120         struct sk_buff_head tx_queue[4];
121         struct sk_buff_head cli_queue[4];
122         struct sk_buff *tx_skb[4];
123         struct sk_buff *rx_skb[4];
124         wait_queue_head_t param_wq;
125         wait_queue_head_t fw_wq;
126         int using_dma;
127         int fpga_version;
128         int buffer_size;
129 };
130
131
132 struct solos_param {
133         struct list_head list;
134         pid_t pid;
135         int port;
136         struct sk_buff *response;
137 };
138
139 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
140
141 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
142 MODULE_DESCRIPTION("Solos PCI driver");
143 MODULE_VERSION(VERSION);
144 MODULE_LICENSE("GPL");
145 MODULE_FIRMWARE("solos-FPGA.bin");
146 MODULE_FIRMWARE("solos-Firmware.bin");
147 MODULE_FIRMWARE("solos-db-FPGA.bin");
148 MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
149 MODULE_PARM_DESC(atmdebug, "Print ATM data");
150 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
151 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
152 MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
153 MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
154 module_param(reset, int, 0444);
155 module_param(atmdebug, int, 0644);
156 module_param(firmware_upgrade, int, 0444);
157 module_param(fpga_upgrade, int, 0444);
158 module_param(db_firmware_upgrade, int, 0444);
159 module_param(db_fpga_upgrade, int, 0444);
160
161 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
162                        struct atm_vcc *vcc);
163 static uint32_t fpga_tx(struct solos_card *);
164 static irqreturn_t solos_irq(int irq, void *dev_id);
165 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
166 static int list_vccs(int vci);
167 static void release_vccs(struct atm_dev *dev);
168 static int atm_init(struct solos_card *);
169 static void atm_remove(struct solos_card *);
170 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
171 static void solos_bh(unsigned long);
172 static int print_buffer(struct sk_buff *buf);
173
174 static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
175 {
176         if (vcc->pop)
177                 vcc->pop(vcc, skb);
178         else
179                 dev_kfree_skb_any(skb);
180 }
181
182 static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
183                                 char *buf)
184 {
185         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
186         struct solos_card *card = atmdev->dev_data;
187         struct solos_param prm;
188         struct sk_buff *skb;
189         struct pkt_hdr *header;
190         int buflen;
191
192         buflen = strlen(attr->attr.name) + 10;
193
194         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
195         if (!skb) {
196                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
197                 return -ENOMEM;
198         }
199
200         header = (void *)skb_put(skb, sizeof(*header));
201
202         buflen = snprintf((void *)&header[1], buflen - 1,
203                           "L%05d\n%s\n", current->pid, attr->attr.name);
204         skb_put(skb, buflen);
205
206         header->size = cpu_to_le16(buflen);
207         header->vpi = cpu_to_le16(0);
208         header->vci = cpu_to_le16(0);
209         header->type = cpu_to_le16(PKT_COMMAND);
210
211         prm.pid = current->pid;
212         prm.response = NULL;
213         prm.port = SOLOS_CHAN(atmdev);
214
215         spin_lock_irq(&card->param_queue_lock);
216         list_add(&prm.list, &card->param_queue);
217         spin_unlock_irq(&card->param_queue_lock);
218
219         fpga_queue(card, prm.port, skb, NULL);
220
221         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
222
223         spin_lock_irq(&card->param_queue_lock);
224         list_del(&prm.list);
225         spin_unlock_irq(&card->param_queue_lock);
226
227         if (!prm.response)
228                 return -EIO;
229
230         buflen = prm.response->len;
231         memcpy(buf, prm.response->data, buflen);
232         kfree_skb(prm.response);
233
234         return buflen;
235 }
236
237 static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
238                                  const char *buf, size_t count)
239 {
240         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
241         struct solos_card *card = atmdev->dev_data;
242         struct solos_param prm;
243         struct sk_buff *skb;
244         struct pkt_hdr *header;
245         int buflen;
246         ssize_t ret;
247
248         buflen = strlen(attr->attr.name) + 11 + count;
249
250         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
251         if (!skb) {
252                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
253                 return -ENOMEM;
254         }
255
256         header = (void *)skb_put(skb, sizeof(*header));
257
258         buflen = snprintf((void *)&header[1], buflen - 1,
259                           "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
260
261         skb_put(skb, buflen);
262         header->size = cpu_to_le16(buflen);
263         header->vpi = cpu_to_le16(0);
264         header->vci = cpu_to_le16(0);
265         header->type = cpu_to_le16(PKT_COMMAND);
266
267         prm.pid = current->pid;
268         prm.response = NULL;
269         prm.port = SOLOS_CHAN(atmdev);
270
271         spin_lock_irq(&card->param_queue_lock);
272         list_add(&prm.list, &card->param_queue);
273         spin_unlock_irq(&card->param_queue_lock);
274
275         fpga_queue(card, prm.port, skb, NULL);
276
277         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
278
279         spin_lock_irq(&card->param_queue_lock);
280         list_del(&prm.list);
281         spin_unlock_irq(&card->param_queue_lock);
282
283         skb = prm.response;
284
285         if (!skb)
286                 return -EIO;
287
288         buflen = skb->len;
289
290         /* Sometimes it has a newline, sometimes it doesn't. */
291         if (skb->data[buflen - 1] == '\n')
292                 buflen--;
293
294         if (buflen == 2 && !strncmp(skb->data, "OK", 2))
295                 ret = count;
296         else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
297                 ret = -EIO;
298         else {
299                 /* We know we have enough space allocated for this; we allocated 
300                    it ourselves */
301                 skb->data[buflen] = 0;
302         
303                 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
304                          skb->data);
305                 ret = -EIO;
306         }
307         kfree_skb(skb);
308
309         return ret;
310 }
311
312 static char *next_string(struct sk_buff *skb)
313 {
314         int i = 0;
315         char *this = skb->data;
316         
317         for (i = 0; i < skb->len; i++) {
318                 if (this[i] == '\n') {
319                         this[i] = 0;
320                         skb_pull(skb, i + 1);
321                         return this;
322                 }
323                 if (!isprint(this[i]))
324                         return NULL;
325         }
326         return NULL;
327 }
328
329 /*
330  * Status packet has fields separated by \n, starting with a version number
331  * for the information therein. Fields are....
332  *
333  *     packet version
334  *     RxBitRate        (version >= 1)
335  *     TxBitRate        (version >= 1)
336  *     State            (version >= 1)
337  *     LocalSNRMargin   (version >= 1)
338  *     LocalLineAttn    (version >= 1)
339  */       
340 static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
341 {
342         char *str, *end, *state_str, *snr, *attn;
343         int ver, rate_up, rate_down;
344
345         if (!card->atmdev[port])
346                 return -ENODEV;
347
348         str = next_string(skb);
349         if (!str)
350                 return -EIO;
351
352         ver = simple_strtol(str, NULL, 10);
353         if (ver < 1) {
354                 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
355                          ver);
356                 return -EIO;
357         }
358
359         str = next_string(skb);
360         if (!str)
361                 return -EIO;
362         if (!strcmp(str, "ERROR")) {
363                 dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
364                          port);
365                 return 0;
366         }
367
368         rate_down = simple_strtol(str, &end, 10);
369         if (*end)
370                 return -EIO;
371
372         str = next_string(skb);
373         if (!str)
374                 return -EIO;
375         rate_up = simple_strtol(str, &end, 10);
376         if (*end)
377                 return -EIO;
378
379         state_str = next_string(skb);
380         if (!state_str)
381                 return -EIO;
382
383         /* Anything but 'Showtime' is down */
384         if (strcmp(state_str, "Showtime")) {
385                 card->atmdev[port]->signal = ATM_PHY_SIG_LOST;
386                 release_vccs(card->atmdev[port]);
387                 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
388                 return 0;
389         }
390
391         snr = next_string(skb);
392         if (!snr)
393                 return -EIO;
394         attn = next_string(skb);
395         if (!attn)
396                 return -EIO;
397
398         dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
399                  port, state_str, rate_down/1000, rate_up/1000,
400                  snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
401         
402         card->atmdev[port]->link_rate = rate_down / 424;
403         card->atmdev[port]->signal = ATM_PHY_SIG_FOUND;
404
405         return 0;
406 }
407
408 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
409 {
410         struct solos_param *prm;
411         unsigned long flags;
412         int cmdpid;
413         int found = 0;
414
415         if (skb->len < 7)
416                 return 0;
417
418         if (skb->data[0] != 'L'    || !isdigit(skb->data[1]) ||
419             !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
420             !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
421             skb->data[6] != '\n')
422                 return 0;
423
424         cmdpid = simple_strtol(&skb->data[1], NULL, 10);
425
426         spin_lock_irqsave(&card->param_queue_lock, flags);
427         list_for_each_entry(prm, &card->param_queue, list) {
428                 if (prm->port == port && prm->pid == cmdpid) {
429                         prm->response = skb;
430                         skb_pull(skb, 7);
431                         wake_up(&card->param_wq);
432                         found = 1;
433                         break;
434                 }
435         }
436         spin_unlock_irqrestore(&card->param_queue_lock, flags);
437         return found;
438 }
439
440 static ssize_t console_show(struct device *dev, struct device_attribute *attr,
441                             char *buf)
442 {
443         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
444         struct solos_card *card = atmdev->dev_data;
445         struct sk_buff *skb;
446
447         spin_lock(&card->cli_queue_lock);
448         skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
449         spin_unlock(&card->cli_queue_lock);
450         if(skb == NULL)
451                 return sprintf(buf, "No data.\n");
452
453         memcpy(buf, skb->data, skb->len);
454         dev_dbg(&card->dev->dev, "len: %d\n", skb->len);
455
456         kfree_skb(skb);
457         return skb->len;
458 }
459
460 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
461 {
462         struct sk_buff *skb;
463         struct pkt_hdr *header;
464
465         if (size > (BUF_SIZE - sizeof(*header))) {
466                 dev_dbg(&card->dev->dev, "Command is too big.  Dropping request\n");
467                 return 0;
468         }
469         skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
470         if (!skb) {
471                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
472                 return 0;
473         }
474
475         header = (void *)skb_put(skb, sizeof(*header));
476
477         header->size = cpu_to_le16(size);
478         header->vpi = cpu_to_le16(0);
479         header->vci = cpu_to_le16(0);
480         header->type = cpu_to_le16(PKT_COMMAND);
481
482         memcpy(skb_put(skb, size), buf, size);
483
484         fpga_queue(card, dev, skb, NULL);
485
486         return 0;
487 }
488
489 static ssize_t console_store(struct device *dev, struct device_attribute *attr,
490                              const char *buf, size_t count)
491 {
492         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
493         struct solos_card *card = atmdev->dev_data;
494         int err;
495
496         err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
497
498         return err?:count;
499 }
500
501 static DEVICE_ATTR(console, 0644, console_show, console_store);
502
503
504 #define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
505 #define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
506
507 #include "solos-attrlist.c"
508
509 #undef SOLOS_ATTR_RO
510 #undef SOLOS_ATTR_RW
511
512 #define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
513 #define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
514
515 static struct attribute *solos_attrs[] = {
516 #include "solos-attrlist.c"
517         NULL
518 };
519
520 static struct attribute_group solos_attr_group = {
521         .attrs = solos_attrs,
522         .name = "parameters",
523 };
524
525 static int flash_upgrade(struct solos_card *card, int chip)
526 {
527         const struct firmware *fw;
528         const char *fw_name;
529         uint32_t data32 = 0;
530         int blocksize = 0;
531         int numblocks = 0;
532         int offset;
533
534         switch (chip) {
535         case 0:
536                 fw_name = "solos-FPGA.bin";
537                 blocksize = FPGA_BLOCK;
538                 break;
539         case 1:
540                 fw_name = "solos-Firmware.bin";
541                 blocksize = SOLOS_BLOCK;
542                 break;
543         case 2:
544                 if (card->fpga_version > LEGACY_BUFFERS){
545                         fw_name = "solos-db-FPGA.bin";
546                         blocksize = FPGA_BLOCK;
547                 } else {
548                         dev_info(&card->dev->dev, "FPGA version doesn't support"
549                                         " daughter board upgrades\n");
550                         return -EPERM;
551                 }
552                 break;
553         case 3:
554                 if (card->fpga_version > LEGACY_BUFFERS){
555                         fw_name = "solos-Firmware.bin";
556                         blocksize = SOLOS_BLOCK;
557                 } else {
558                         dev_info(&card->dev->dev, "FPGA version doesn't support"
559                                         " daughter board upgrades\n");
560                         return -EPERM;
561                 }
562                 break;
563         default:
564                 return -ENODEV;
565         }
566
567         if (request_firmware(&fw, fw_name, &card->dev->dev))
568                 return -ENOENT;
569
570         dev_info(&card->dev->dev, "Flash upgrade starting\n");
571
572         numblocks = fw->size / blocksize;
573         dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
574         dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
575         
576         dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
577         iowrite32(1, card->config_regs + FPGA_MODE);
578         data32 = ioread32(card->config_regs + FPGA_MODE); 
579
580         /* Set mode to Chip Erase */
581         if(chip == 0 || chip == 2)
582                 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
583         if(chip == 1 || chip == 3)
584                 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
585         iowrite32((chip * 2), card->config_regs + FLASH_MODE);
586
587
588         iowrite32(1, card->config_regs + WRITE_FLASH);
589         wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
590
591         for (offset = 0; offset < fw->size; offset += blocksize) {
592                 int i;
593
594                 /* Clear write flag */
595                 iowrite32(0, card->config_regs + WRITE_FLASH);
596
597                 /* Set mode to Block Write */
598                 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
599                 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
600
601                 /* Copy block to buffer, swapping each 16 bits */
602                 for(i = 0; i < blocksize; i += 4) {
603                         uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i));
604                         if(card->fpga_version > LEGACY_BUFFERS)
605                                 iowrite32(word, FLASH_BUF + i);
606                         else
607                                 iowrite32(word, RX_BUF(card, 3) + i);
608                 }
609
610                 /* Specify block number and then trigger flash write */
611                 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
612                 iowrite32(1, card->config_regs + WRITE_FLASH);
613                 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
614         }
615
616         release_firmware(fw);
617         iowrite32(0, card->config_regs + WRITE_FLASH);
618         iowrite32(0, card->config_regs + FPGA_MODE);
619         iowrite32(0, card->config_regs + FLASH_MODE);
620         dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
621         return 0;
622 }
623
624 static irqreturn_t solos_irq(int irq, void *dev_id)
625 {
626         struct solos_card *card = dev_id;
627         int handled = 1;
628
629         iowrite32(0, card->config_regs + IRQ_CLEAR);
630
631         /* If we're up and running, just kick the tasklet to process TX/RX */
632         if (card->atmdev[0])
633                 tasklet_schedule(&card->tlet);
634         else
635                 wake_up(&card->fw_wq);
636
637         return IRQ_RETVAL(handled);
638 }
639
640 void solos_bh(unsigned long card_arg)
641 {
642         struct solos_card *card = (void *)card_arg;
643         uint32_t card_flags;
644         uint32_t rx_done = 0;
645         int port;
646
647         /*
648          * Since fpga_tx() is going to need to read the flags under its lock,
649          * it can return them to us so that we don't have to hit PCI MMIO
650          * again for the same information
651          */
652         card_flags = fpga_tx(card);
653
654         for (port = 0; port < card->nr_ports; port++) {
655                 if (card_flags & (0x10 << port)) {
656                         struct pkt_hdr _hdr, *header;
657                         struct sk_buff *skb;
658                         struct atm_vcc *vcc;
659                         int size;
660
661                         if (card->using_dma) {
662                                 skb = card->rx_skb[port];
663                                 card->rx_skb[port] = NULL;
664
665                                 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
666                                                  RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
667
668                                 header = (void *)skb->data;
669                                 size = le16_to_cpu(header->size);
670                                 skb_put(skb, size + sizeof(*header));
671                                 skb_pull(skb, sizeof(*header));
672                         } else {
673                                 header = &_hdr;
674
675                                 rx_done |= 0x10 << port;
676
677                                 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
678
679                                 size = le16_to_cpu(header->size);
680                                 if (size > (card->buffer_size - sizeof(*header))){
681                                         dev_warn(&card->dev->dev, "Invalid buffer size\n");
682                                         continue;
683                                 }
684
685                                 skb = alloc_skb(size + 1, GFP_ATOMIC);
686                                 if (!skb) {
687                                         if (net_ratelimit())
688                                                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
689                                         continue;
690                                 }
691
692                                 memcpy_fromio(skb_put(skb, size),
693                                               RX_BUF(card, port) + sizeof(*header),
694                                               size);
695                         }
696                         if (atmdebug) {
697                                 dev_info(&card->dev->dev, "Received: device %d\n", port);
698                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
699                                          size, le16_to_cpu(header->vpi),
700                                          le16_to_cpu(header->vci));
701                                 print_buffer(skb);
702                         }
703
704                         switch (le16_to_cpu(header->type)) {
705                         case PKT_DATA:
706                                 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
707                                                le16_to_cpu(header->vci));
708                                 if (!vcc) {
709                                         if (net_ratelimit())
710                                                 dev_warn(&card->dev->dev, "Received packet for unknown VCI.VPI %d.%d on port %d\n",
711                                                          le16_to_cpu(header->vci), le16_to_cpu(header->vpi),
712                                                          port);
713                                         continue;
714                                 }
715                                 atm_charge(vcc, skb->truesize);
716                                 vcc->push(vcc, skb);
717                                 atomic_inc(&vcc->stats->rx);
718                                 break;
719
720                         case PKT_STATUS:
721                                 if (process_status(card, port, skb) &&
722                                     net_ratelimit()) {
723                                         dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
724                                         print_buffer(skb);
725                                 }
726                                 dev_kfree_skb_any(skb);
727                                 break;
728
729                         case PKT_COMMAND:
730                         default: /* FIXME: Not really, surely? */
731                                 if (process_command(card, port, skb))
732                                         break;
733                                 spin_lock(&card->cli_queue_lock);
734                                 if (skb_queue_len(&card->cli_queue[port]) > 10) {
735                                         if (net_ratelimit())
736                                                 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
737                                                          port);
738                                         dev_kfree_skb_any(skb);
739                                 } else
740                                         skb_queue_tail(&card->cli_queue[port], skb);
741                                 spin_unlock(&card->cli_queue_lock);
742                                 break;
743                         }
744                 }
745                 /* Allocate RX skbs for any ports which need them */
746                 if (card->using_dma && card->atmdev[port] &&
747                     !card->rx_skb[port]) {
748                         struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC);
749                         if (skb) {
750                                 SKB_CB(skb)->dma_addr =
751                                         pci_map_single(card->dev, skb->data,
752                                                        RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
753                                 iowrite32(SKB_CB(skb)->dma_addr,
754                                           card->config_regs + RX_DMA_ADDR(port));
755                                 card->rx_skb[port] = skb;
756                         } else {
757                                 if (net_ratelimit())
758                                         dev_warn(&card->dev->dev, "Failed to allocate RX skb");
759
760                                 /* We'll have to try again later */
761                                 tasklet_schedule(&card->tlet);
762                         }
763                 }
764         }
765         if (rx_done)
766                 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
767
768         return;
769 }
770
771 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
772 {
773         struct hlist_head *head;
774         struct atm_vcc *vcc = NULL;
775         struct hlist_node *node;
776         struct sock *s;
777
778         read_lock(&vcc_sklist_lock);
779         head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
780         sk_for_each(s, node, head) {
781                 vcc = atm_sk(s);
782                 if (vcc->dev == dev && vcc->vci == vci &&
783                     vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE)
784                         goto out;
785         }
786         vcc = NULL;
787  out:
788         read_unlock(&vcc_sklist_lock);
789         return vcc;
790 }
791
792 static int list_vccs(int vci)
793 {
794         struct hlist_head *head;
795         struct atm_vcc *vcc;
796         struct hlist_node *node;
797         struct sock *s;
798         int num_found = 0;
799         int i;
800
801         read_lock(&vcc_sklist_lock);
802         if (vci != 0){
803                 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
804                 sk_for_each(s, node, head) {
805                         num_found ++;
806                         vcc = atm_sk(s);
807                         printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
808                                vcc->dev->number,
809                                vcc->vpi,
810                                vcc->vci);
811                 }
812         } else {
813                 for(i = 0; i < VCC_HTABLE_SIZE; i++){
814                         head = &vcc_hash[i];
815                         sk_for_each(s, node, head) {
816                                 num_found ++;
817                                 vcc = atm_sk(s);
818                                 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
819                                        vcc->dev->number,
820                                        vcc->vpi,
821                                        vcc->vci);
822                         }
823                 }
824         }
825         read_unlock(&vcc_sklist_lock);
826         return num_found;
827 }
828
829 static void release_vccs(struct atm_dev *dev)
830 {
831         int i;
832
833         write_lock_irq(&vcc_sklist_lock);
834         for (i = 0; i < VCC_HTABLE_SIZE; i++) {
835                 struct hlist_head *head = &vcc_hash[i];
836                 struct hlist_node *node, *tmp;
837                 struct sock *s;
838                 struct atm_vcc *vcc;
839
840                 sk_for_each_safe(s, node, tmp, head) {
841                         vcc = atm_sk(s);
842                         if (vcc->dev == dev) {
843                                 vcc_release_async(vcc, -EPIPE);
844                                 sk_del_node_init(s);
845                         }
846                 }
847         }
848         write_unlock_irq(&vcc_sklist_lock);
849 }
850
851
852 static int popen(struct atm_vcc *vcc)
853 {
854         struct solos_card *card = vcc->dev->dev_data;
855         struct sk_buff *skb;
856         struct pkt_hdr *header;
857
858         if (vcc->qos.aal != ATM_AAL5) {
859                 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
860                          vcc->qos.aal);
861                 return -EINVAL;
862         }
863
864         skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
865         if (!skb && net_ratelimit()) {
866                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
867                 return -ENOMEM;
868         }
869         header = (void *)skb_put(skb, sizeof(*header));
870
871         header->size = cpu_to_le16(0);
872         header->vpi = cpu_to_le16(vcc->vpi);
873         header->vci = cpu_to_le16(vcc->vci);
874         header->type = cpu_to_le16(PKT_POPEN);
875
876         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
877
878         set_bit(ATM_VF_ADDR, &vcc->flags);
879         set_bit(ATM_VF_READY, &vcc->flags);
880         list_vccs(0);
881
882
883         return 0;
884 }
885
886 static void pclose(struct atm_vcc *vcc)
887 {
888         struct solos_card *card = vcc->dev->dev_data;
889         struct sk_buff *skb;
890         struct pkt_hdr *header;
891
892         skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
893         if (!skb) {
894                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
895                 return;
896         }
897         header = (void *)skb_put(skb, sizeof(*header));
898
899         header->size = cpu_to_le16(0);
900         header->vpi = cpu_to_le16(vcc->vpi);
901         header->vci = cpu_to_le16(vcc->vci);
902         header->type = cpu_to_le16(PKT_PCLOSE);
903
904         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
905
906         clear_bit(ATM_VF_ADDR, &vcc->flags);
907         clear_bit(ATM_VF_READY, &vcc->flags);
908
909         return;
910 }
911
912 static int print_buffer(struct sk_buff *buf)
913 {
914         int len,i;
915         char msg[500];
916         char item[10];
917
918         len = buf->len;
919         for (i = 0; i < len; i++){
920                 if(i % 8 == 0)
921                         sprintf(msg, "%02X: ", i);
922
923                 sprintf(item,"%02X ",*(buf->data + i));
924                 strcat(msg, item);
925                 if(i % 8 == 7) {
926                         sprintf(item, "\n");
927                         strcat(msg, item);
928                         printk(KERN_DEBUG "%s", msg);
929                 }
930         }
931         if (i % 8 != 0) {
932                 sprintf(item, "\n");
933                 strcat(msg, item);
934                 printk(KERN_DEBUG "%s", msg);
935         }
936         printk(KERN_DEBUG "\n");
937
938         return 0;
939 }
940
941 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
942                        struct atm_vcc *vcc)
943 {
944         int old_len;
945         unsigned long flags;
946
947         SKB_CB(skb)->vcc = vcc;
948
949         spin_lock_irqsave(&card->tx_queue_lock, flags);
950         old_len = skb_queue_len(&card->tx_queue[port]);
951         skb_queue_tail(&card->tx_queue[port], skb);
952         if (!old_len)
953                 card->tx_mask |= (1 << port);
954         spin_unlock_irqrestore(&card->tx_queue_lock, flags);
955
956         /* Theoretically we could just schedule the tasklet here, but
957            that introduces latency we don't want -- it's noticeable */
958         if (!old_len)
959                 fpga_tx(card);
960 }
961
962 static uint32_t fpga_tx(struct solos_card *card)
963 {
964         uint32_t tx_pending, card_flags;
965         uint32_t tx_started = 0;
966         struct sk_buff *skb;
967         struct atm_vcc *vcc;
968         unsigned char port;
969         unsigned long flags;
970
971         spin_lock_irqsave(&card->tx_lock, flags);
972         
973         card_flags = ioread32(card->config_regs + FLAGS_ADDR);
974         /*
975          * The queue lock is required for _writing_ to tx_mask, but we're
976          * OK to read it here without locking. The only potential update
977          * that we could race with is in fpga_queue() where it sets a bit
978          * for a new port... but it's going to call this function again if
979          * it's doing that, anyway.
980          */
981         tx_pending = card->tx_mask & ~card_flags;
982
983         for (port = 0; tx_pending; tx_pending >>= 1, port++) {
984                 if (tx_pending & 1) {
985                         struct sk_buff *oldskb = card->tx_skb[port];
986                         if (oldskb)
987                                 pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr,
988                                                  oldskb->len, PCI_DMA_TODEVICE);
989
990                         spin_lock(&card->tx_queue_lock);
991                         skb = skb_dequeue(&card->tx_queue[port]);
992                         if (!skb)
993                                 card->tx_mask &= ~(1 << port);
994                         spin_unlock(&card->tx_queue_lock);
995
996                         if (skb && !card->using_dma) {
997                                 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
998                                 tx_started |= 1 << port;
999                                 oldskb = skb; /* We're done with this skb already */
1000                         } else if (skb && card->using_dma) {
1001                                 SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data,
1002                                                                        skb->len, PCI_DMA_TODEVICE);
1003                                 iowrite32(SKB_CB(skb)->dma_addr,
1004                                           card->config_regs + TX_DMA_ADDR(port));
1005                         }
1006
1007                         if (!oldskb)
1008                                 continue;
1009
1010                         /* Clean up and free oldskb now it's gone */
1011                         if (atmdebug) {
1012                                 dev_info(&card->dev->dev, "Transmitted: port %d\n",
1013                                          port);
1014                                 print_buffer(oldskb);
1015                         }
1016
1017                         vcc = SKB_CB(oldskb)->vcc;
1018
1019                         if (vcc) {
1020                                 atomic_inc(&vcc->stats->tx);
1021                                 solos_pop(vcc, oldskb);
1022                         } else
1023                                 dev_kfree_skb_irq(oldskb);
1024
1025                 }
1026         }
1027         /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
1028         if (tx_started)
1029                 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1030
1031         spin_unlock_irqrestore(&card->tx_lock, flags);
1032         return card_flags;
1033 }
1034
1035 static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1036 {
1037         struct solos_card *card = vcc->dev->dev_data;
1038         struct pkt_hdr *header;
1039         int pktlen;
1040
1041         pktlen = skb->len;
1042         if (pktlen > (BUF_SIZE - sizeof(*header))) {
1043                 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1044                 solos_pop(vcc, skb);
1045                 return 0;
1046         }
1047
1048         if (!skb_clone_writable(skb, sizeof(*header))) {
1049                 int expand_by = 0;
1050                 int ret;
1051
1052                 if (skb_headroom(skb) < sizeof(*header))
1053                         expand_by = sizeof(*header) - skb_headroom(skb);
1054
1055                 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1056                 if (ret) {
1057                         dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1058                         solos_pop(vcc, skb);
1059                         return ret;
1060                 }
1061         }
1062
1063         header = (void *)skb_push(skb, sizeof(*header));
1064
1065         /* This does _not_ include the size of the header */
1066         header->size = cpu_to_le16(pktlen);
1067         header->vpi = cpu_to_le16(vcc->vpi);
1068         header->vci = cpu_to_le16(vcc->vci);
1069         header->type = cpu_to_le16(PKT_DATA);
1070
1071         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1072
1073         return 0;
1074 }
1075
1076 static struct atmdev_ops fpga_ops = {
1077         .open =         popen,
1078         .close =        pclose,
1079         .ioctl =        NULL,
1080         .getsockopt =   NULL,
1081         .setsockopt =   NULL,
1082         .send =         psend,
1083         .send_oam =     NULL,
1084         .phy_put =      NULL,
1085         .phy_get =      NULL,
1086         .change_qos =   NULL,
1087         .proc_read =    NULL,
1088         .owner =        THIS_MODULE
1089 };
1090
1091 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1092 {
1093         int err;
1094         uint16_t fpga_ver;
1095         uint8_t major_ver, minor_ver;
1096         uint32_t data32;
1097         struct solos_card *card;
1098
1099         card = kzalloc(sizeof(*card), GFP_KERNEL);
1100         if (!card)
1101                 return -ENOMEM;
1102
1103         card->dev = dev;
1104         init_waitqueue_head(&card->fw_wq);
1105         init_waitqueue_head(&card->param_wq);
1106
1107         err = pci_enable_device(dev);
1108         if (err) {
1109                 dev_warn(&dev->dev,  "Failed to enable PCI device\n");
1110                 goto out;
1111         }
1112
1113         err = pci_set_dma_mask(dev, DMA_BIT_MASK(32));
1114         if (err) {
1115                 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1116                 goto out;
1117         }
1118
1119         err = pci_request_regions(dev, "solos");
1120         if (err) {
1121                 dev_warn(&dev->dev, "Failed to request regions\n");
1122                 goto out;
1123         }
1124
1125         card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1126         if (!card->config_regs) {
1127                 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1128                 goto out_release_regions;
1129         }
1130         card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1131         if (!card->buffers) {
1132                 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1133                 goto out_unmap_config;
1134         }
1135
1136         if (reset) {
1137                 iowrite32(1, card->config_regs + FPGA_MODE);
1138                 data32 = ioread32(card->config_regs + FPGA_MODE); 
1139
1140                 iowrite32(0, card->config_regs + FPGA_MODE);
1141                 data32 = ioread32(card->config_regs + FPGA_MODE); 
1142         }
1143
1144         data32 = ioread32(card->config_regs + FPGA_VER);
1145         fpga_ver = (data32 & 0x0000FFFF);
1146         major_ver = ((data32 & 0xFF000000) >> 24);
1147         minor_ver = ((data32 & 0x00FF0000) >> 16);
1148         card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1149         if (card->fpga_version > LEGACY_BUFFERS)
1150                 card->buffer_size = BUF_SIZE;
1151         else
1152                 card->buffer_size = OLD_BUF_SIZE;
1153         dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1154                  major_ver, minor_ver, fpga_ver);
1155
1156         if (card->fpga_version >= DMA_SUPPORTED){
1157                 card->using_dma = 1;
1158         } else {
1159                 card->using_dma = 0;
1160                 /* Set RX empty flag for all ports */
1161                 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1162         }
1163
1164         data32 = ioread32(card->config_regs + PORTS);
1165         card->nr_ports = (data32 & 0x000000FF);
1166
1167         pci_set_drvdata(dev, card);
1168
1169         tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1170         spin_lock_init(&card->tx_lock);
1171         spin_lock_init(&card->tx_queue_lock);
1172         spin_lock_init(&card->cli_queue_lock);
1173         spin_lock_init(&card->param_queue_lock);
1174         INIT_LIST_HEAD(&card->param_queue);
1175
1176         err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1177                           "solos-pci", card);
1178         if (err) {
1179                 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1180                 goto out_unmap_both;
1181         }
1182
1183         iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1184
1185         if (fpga_upgrade)
1186                 flash_upgrade(card, 0);
1187
1188         if (firmware_upgrade)
1189                 flash_upgrade(card, 1);
1190
1191         if (db_fpga_upgrade)
1192                 flash_upgrade(card, 2);
1193
1194         if (db_firmware_upgrade)
1195                 flash_upgrade(card, 3);
1196
1197         err = atm_init(card);
1198         if (err)
1199                 goto out_free_irq;
1200
1201         return 0;
1202
1203  out_free_irq:
1204         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1205         free_irq(dev->irq, card);
1206         tasklet_kill(&card->tlet);
1207         
1208  out_unmap_both:
1209         pci_set_drvdata(dev, NULL);
1210         pci_iounmap(dev, card->config_regs);
1211  out_unmap_config:
1212         pci_iounmap(dev, card->buffers);
1213  out_release_regions:
1214         pci_release_regions(dev);
1215  out:
1216         kfree(card);
1217         return err;
1218 }
1219
1220 static int atm_init(struct solos_card *card)
1221 {
1222         int i;
1223
1224         for (i = 0; i < card->nr_ports; i++) {
1225                 struct sk_buff *skb;
1226                 struct pkt_hdr *header;
1227
1228                 skb_queue_head_init(&card->tx_queue[i]);
1229                 skb_queue_head_init(&card->cli_queue[i]);
1230
1231                 card->atmdev[i] = atm_dev_register("solos-pci", &fpga_ops, -1, NULL);
1232                 if (!card->atmdev[i]) {
1233                         dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1234                         atm_remove(card);
1235                         return -ENODEV;
1236                 }
1237                 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1238                         dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1239                 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1240                         dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1241
1242                 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1243
1244                 card->atmdev[i]->ci_range.vpi_bits = 8;
1245                 card->atmdev[i]->ci_range.vci_bits = 16;
1246                 card->atmdev[i]->dev_data = card;
1247                 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1248                 card->atmdev[i]->signal = ATM_PHY_SIG_UNKNOWN;
1249
1250                 skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
1251                 if (!skb) {
1252                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1253                         continue;
1254                 }
1255
1256                 header = (void *)skb_put(skb, sizeof(*header));
1257
1258                 header->size = cpu_to_le16(0);
1259                 header->vpi = cpu_to_le16(0);
1260                 header->vci = cpu_to_le16(0);
1261                 header->type = cpu_to_le16(PKT_STATUS);
1262
1263                 fpga_queue(card, i, skb, NULL);
1264         }
1265         return 0;
1266 }
1267
1268 static void atm_remove(struct solos_card *card)
1269 {
1270         int i;
1271
1272         for (i = 0; i < card->nr_ports; i++) {
1273                 if (card->atmdev[i]) {
1274                         struct sk_buff *skb;
1275
1276                         dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1277
1278                         sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1279                         atm_dev_deregister(card->atmdev[i]);
1280
1281                         skb = card->rx_skb[i];
1282                         if (skb) {
1283                                 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1284                                                  RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
1285                                 dev_kfree_skb(skb);
1286                         }
1287                         skb = card->tx_skb[i];
1288                         if (skb) {
1289                                 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1290                                                  skb->len, PCI_DMA_TODEVICE);
1291                                 dev_kfree_skb(skb);
1292                         }
1293                         while ((skb = skb_dequeue(&card->tx_queue[i])))
1294                                 dev_kfree_skb(skb);
1295  
1296                 }
1297         }
1298 }
1299
1300 static void fpga_remove(struct pci_dev *dev)
1301 {
1302         struct solos_card *card = pci_get_drvdata(dev);
1303         
1304         /* Disable IRQs */
1305         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1306
1307         /* Reset FPGA */
1308         iowrite32(1, card->config_regs + FPGA_MODE);
1309         (void)ioread32(card->config_regs + FPGA_MODE); 
1310
1311         atm_remove(card);
1312
1313         free_irq(dev->irq, card);
1314         tasklet_kill(&card->tlet);
1315
1316         /* Release device from reset */
1317         iowrite32(0, card->config_regs + FPGA_MODE);
1318         (void)ioread32(card->config_regs + FPGA_MODE); 
1319
1320         pci_iounmap(dev, card->buffers);
1321         pci_iounmap(dev, card->config_regs);
1322
1323         pci_release_regions(dev);
1324         pci_disable_device(dev);
1325
1326         pci_set_drvdata(dev, NULL);
1327         kfree(card);
1328 }
1329
1330 static struct pci_device_id fpga_pci_tbl[] __devinitdata = {
1331         { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1332         { 0, }
1333 };
1334
1335 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1336
1337 static struct pci_driver fpga_driver = {
1338         .name =         "solos",
1339         .id_table =     fpga_pci_tbl,
1340         .probe =        fpga_probe,
1341         .remove =       fpga_remove,
1342 };
1343
1344
1345 static int __init solos_pci_init(void)
1346 {
1347         printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1348         return pci_register_driver(&fpga_driver);
1349 }
1350
1351 static void __exit solos_pci_exit(void)
1352 {
1353         pci_unregister_driver(&fpga_driver);
1354         printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1355 }
1356
1357 module_init(solos_pci_init);
1358 module_exit(solos_pci_exit);