git.oblomov.eu Git - linux-2.6/blob - 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  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * version 2, as published by the Free Software Foundation.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  */
  22
  23 #define DEBUG
  24 #define VERBOSE_DEBUG
  25
  26 #include <linux/interrupt.h>
  27 #include <linux/module.h>
  28 #include <linux/kernel.h>
  29 #include <linux/errno.h>
  30 #include <linux/ioport.h>
  31 #include <linux/types.h>
  32 #include <linux/pci.h>
  33 #include <linux/atm.h>
  34 #include <linux/atmdev.h>
  35 #include <linux/skbuff.h>
  36 #include <linux/sysfs.h>
  37 #include <linux/device.h>
  38 #include <linux/kobject.h>
  39
  40 #define VERSION "0.04"
  41 #define PTAG "solos-pci"
  42
  43 #define CONFIG_RAM_SIZE 128
  44 #define FLAGS_ADDR      0x7C
  45 #define IRQ_EN_ADDR     0x78
  46 #define FPGA_VER        0x74
  47 #define IRQ_CLEAR       0x70
  48 #define BUG_FLAG        0x6C
  49
  50 #define DATA_RAM_SIZE   32768
  51 #define BUF_SIZE        4096
  52
  53 #define RX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2)
  54 #define TX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2 + BUF_SIZE)
  55
  56 static int debug = 0;
  57 static int atmdebug = 0;
  58
  59 struct pkt_hdr {
  60         __le16 size;
  61         __le16 vpi;
  62         __le16 vci;
  63         __le16 type;
  64 };
  65
  66 #define PKT_DATA        0
  67 #define PKT_COMMAND     1
  68 #define PKT_POPEN       3
  69 #define PKT_PCLOSE      4
  70
  71 struct solos_card {
  72         void __iomem *config_regs;
  73         void __iomem *buffers;
  74         int nr_ports;
  75         struct pci_dev *dev;
  76         struct atm_dev *atmdev[4];
  77         struct tasklet_struct tlet;
  78         spinlock_t tx_lock;
  79         spinlock_t tx_queue_lock;
  80         spinlock_t cli_queue_lock;
  81         struct sk_buff_head tx_queue[4];
  82         struct sk_buff_head cli_queue[4];
  83 };
  84
  85 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
  86
  87 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
  88 MODULE_DESCRIPTION("Solos PCI driver");
  89 MODULE_VERSION(VERSION);
  90 MODULE_LICENSE("GPL");
  91 MODULE_PARM_DESC(debug, "Enable Loopback");
  92 MODULE_PARM_DESC(atmdebug, "Print ATM data");
  93 module_param(debug, int, 0444);
  94 module_param(atmdebug, int, 0444);
  95
  96 static int opens;
  97
  98 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
  99                        struct atm_vcc *vcc);
 100 static int fpga_tx(struct solos_card *);
 101 static irqreturn_t solos_irq(int irq, void *dev_id);
 102 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
 103 static int list_vccs(int vci);
 104 static int atm_init(struct solos_card *);
 105 static void atm_remove(struct solos_card *);
 106 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
 107 static void solos_bh(unsigned long);
 108 static int print_buffer(struct sk_buff *buf);
 109
 110 static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
 111 {
 112         if (vcc->pop)
 113                 vcc->pop(vcc, skb);
 114         else
 115                 dev_kfree_skb_any(skb);
 116 }
 117
 118 static ssize_t console_show(struct device *dev, struct device_attribute *attr,
 119                             char *buf)
 120 {
 121         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 122         struct solos_card *card = atmdev->dev_data;
 123         struct sk_buff *skb;
 124
 125         spin_lock(&card->cli_queue_lock);
 126         skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
 127         spin_unlock(&card->cli_queue_lock);
 128         if(skb == NULL)
 129                 return sprintf(buf, "No data.\n");
 130
 131         memcpy(buf, skb->data, skb->len);
 132         dev_dbg(&card->dev->dev, "len: %d\n", skb->len);
 133
 134         kfree_skb(skb);
 135         return skb->len;
 136 }
 137
 138 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
 139 {
 140         struct sk_buff *skb;
 141         struct pkt_hdr *header;
 142
 143 //      dev_dbg(&card->dev->dev, "size: %d\n", size);
 144
 145         if (size > (BUF_SIZE - sizeof(*header))) {
 146                 dev_dbg(&card->dev->dev, "Command is too big.  Dropping request\n");
 147                 return 0;
 148         }
 149         skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
 150         if (!skb) {
 151                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
 152                 return 0;
 153         }
 154
 155         header = (void *)skb_put(skb, sizeof(*header));
 156
 157         header->size = cpu_to_le16(size);
 158         header->vpi = cpu_to_le16(0);
 159         header->vci = cpu_to_le16(0);
 160         header->type = cpu_to_le16(PKT_COMMAND);
 161
 162         memcpy(skb_put(skb, size), buf, size);
 163
 164         fpga_queue(card, dev, skb, NULL);
 165
 166         return 0;
 167 }
 168
 169 static ssize_t console_store(struct device *dev, struct device_attribute *attr,
 170                              const char *buf, size_t count)
 171 {
 172         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 173         struct solos_card *card = atmdev->dev_data;
 174         int err;
 175
 176         err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
 177
 178         return err?:count;
 179 }
 180
 181 static DEVICE_ATTR(console, 0644, console_show, console_store);
 182
 183 static irqreturn_t solos_irq(int irq, void *dev_id)
 184 {
 185         struct solos_card *card = dev_id;
 186         int handled = 1;
 187
 188         //ACK IRQ
 189         iowrite32(0, card->config_regs + IRQ_CLEAR);
 190         //Disable IRQs from FPGA
 191         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
 192
 193         /* If we only do it when the device is open, we lose console
 194            messages */
 195         if (1 || opens)
 196                 tasklet_schedule(&card->tlet);
 197
 198         //Enable IRQs from FPGA
 199         iowrite32(1, card->config_regs + IRQ_EN_ADDR);
 200         return IRQ_RETVAL(handled);
 201 }
 202
 203 void solos_bh(unsigned long card_arg)
 204 {
 205         struct solos_card *card = (void *)card_arg;
 206         int port;
 207         uint32_t card_flags;
 208         uint32_t tx_mask;
 209         uint32_t rx_done = 0;
 210
 211         card_flags = ioread32(card->config_regs + FLAGS_ADDR);
 212
 213         /* The TX bits are set if the channel is busy; clear if not. We want to
 214            invoke fpga_tx() unless _all_ the bits for active channels are set */
 215         tx_mask = (1 << card->nr_ports) - 1;
 216         if ((card_flags & tx_mask) != tx_mask)
 217                 fpga_tx(card);
 218
 219         for (port = 0; port < card->nr_ports; port++) {
 220                 if (card_flags & (0x10 << port)) {
 221                         struct pkt_hdr header;
 222                         struct sk_buff *skb;
 223                         struct atm_vcc *vcc;
 224                         int size;
 225
 226                         rx_done |= 0x10 << port;
 227
 228                         memcpy_fromio(&header, RX_BUF(card, port), sizeof(header));
 229
 230                         size = le16_to_cpu(header.size);
 231
 232                         skb = alloc_skb(size, GFP_ATOMIC);
 233                         if (!skb) {
 234                                 if (net_ratelimit())
 235                                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
 236                                 continue;
 237                         }
 238
 239                         memcpy_fromio(skb_put(skb, size),
 240                                       RX_BUF(card, port) + sizeof(header),
 241                                       size);
 242
 243                         if (atmdebug) {
 244                                 dev_info(&card->dev->dev, "Received: device %d\n", port);
 245                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
 246                                          size, le16_to_cpu(header.vpi),
 247                                          le16_to_cpu(header.vci));
 248                                 print_buffer(skb);
 249                         }
 250
 251                         switch (le16_to_cpu(header.type)) {
 252                         case PKT_DATA:
 253                                 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header.vpi),
 254                                                le16_to_cpu(header.vci));
 255                                 if (!vcc) {
 256                                         if (net_ratelimit())
 257                                                 dev_warn(&card->dev->dev, "Received packet for unknown VCI.VPI %d.%d on port %d\n",
 258                                                          le16_to_cpu(header.vci), le16_to_cpu(header.vpi),
 259                                                          port);
 260                                         continue;
 261                                 }
 262                                 atm_charge(vcc, skb->truesize);
 263                                 vcc->push(vcc, skb);
 264                                 atomic_inc(&vcc->stats->rx);
 265                                 break;
 266
 267                         case PKT_COMMAND:
 268                         default: /* FIXME: Not really, surely? */
 269                                 spin_lock(&card->cli_queue_lock);
 270                                 if (skb_queue_len(&card->cli_queue[port]) > 10) {
 271                                         if (net_ratelimit())
 272                                                 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
 273                                                          port);
 274                                 } else
 275                                         skb_queue_tail(&card->cli_queue[port], skb);
 276                                 spin_unlock(&card->cli_queue_lock);
 277                                 break;
 278                         }
 279                 }
 280         }
 281         if (rx_done)
 282                 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
 283
 284         return;
 285 }
 286
 287 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
 288 {
 289         struct hlist_head *head;
 290         struct atm_vcc *vcc = NULL;
 291         struct hlist_node *node;
 292         struct sock *s;
 293
 294         read_lock(&vcc_sklist_lock);
 295         head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 296         sk_for_each(s, node, head) {
 297                 vcc = atm_sk(s);
 298                 if (vcc->dev == dev && vcc->vci == vci &&
 299                     vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE)
 300                         goto out;
 301         }
 302         vcc = NULL;
 303  out:
 304         read_unlock(&vcc_sklist_lock);
 305         return vcc;
 306 }
 307
 308 static int list_vccs(int vci)
 309 {
 310         struct hlist_head *head;
 311         struct atm_vcc *vcc;
 312         struct hlist_node *node;
 313         struct sock *s;
 314         int num_found = 0;
 315         int i;
 316
 317         read_lock(&vcc_sklist_lock);
 318         if (vci != 0){
 319                 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 320                 sk_for_each(s, node, head) {
 321                         num_found ++;
 322                         vcc = atm_sk(s);
 323                         printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
 324                                vcc->dev->number,
 325                                vcc->vpi,
 326                                vcc->vci);
 327                 }
 328         } else {
 329                 for(i=0; i<32; i++){
 330                         head = &vcc_hash[i];
 331                         sk_for_each(s, node, head) {
 332                                 num_found ++;
 333                                 vcc = atm_sk(s);
 334                                 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
 335                                        vcc->dev->number,
 336                                        vcc->vpi,
 337                                        vcc->vci);
 338                         }
 339                 }
 340         }
 341         read_unlock(&vcc_sklist_lock);
 342         return num_found;
 343 }
 344
 345
 346 static int popen(struct atm_vcc *vcc)
 347 {
 348         struct solos_card *card = vcc->dev->dev_data;
 349         struct sk_buff *skb;
 350         struct pkt_hdr *header;
 351
 352         skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
 353         if (!skb && net_ratelimit()) {
 354                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
 355                 return -ENOMEM;
 356         }
 357         header = (void *)skb_put(skb, sizeof(*header));
 358
 359         header->size = cpu_to_le16(sizeof(*header));
 360         header->vpi = cpu_to_le16(vcc->vpi);
 361         header->vci = cpu_to_le16(vcc->vci);
 362         header->type = cpu_to_le16(PKT_POPEN);
 363
 364         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 365
 366 //      dev_dbg(&card->dev->dev, "Open for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev));
 367         set_bit(ATM_VF_ADDR, &vcc->flags); // accept the vpi / vci
 368         set_bit(ATM_VF_READY, &vcc->flags);
 369         list_vccs(0);
 370
 371         if (!opens)
 372                 iowrite32(1, card->config_regs + IRQ_EN_ADDR);
 373
 374         opens++; //count open PVCs
 375
 376         return 0;
 377 }
 378
 379 static void pclose(struct atm_vcc *vcc)
 380 {
 381         struct solos_card *card = vcc->dev->dev_data;
 382         struct sk_buff *skb;
 383         struct pkt_hdr *header;
 384
 385         skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
 386         if (!skb) {
 387                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
 388                 return;
 389         }
 390         header = (void *)skb_put(skb, sizeof(*header));
 391
 392         header->size = cpu_to_le16(sizeof(*header));
 393         header->vpi = cpu_to_le16(vcc->vpi);
 394         header->vci = cpu_to_le16(vcc->vci);
 395         header->type = cpu_to_le16(PKT_PCLOSE);
 396
 397         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 398
 399 //      dev_dbg(&card->dev->dev, "Close for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev));
 400         if (!--opens)
 401                 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
 402
 403         clear_bit(ATM_VF_ADDR, &vcc->flags);
 404         clear_bit(ATM_VF_READY, &vcc->flags);
 405
 406         return;
 407 }
 408
 409 static int print_buffer(struct sk_buff *buf)
 410 {
 411         int len,i;
 412         char msg[500];
 413         char item[10];
 414
 415         len = buf->len;
 416         for (i = 0; i < len; i++){
 417                 if(i % 8 == 0)
 418                         sprintf(msg, "%02X: ", i);
 419
 420                 sprintf(item,"%02X ",*(buf->data + i));
 421                 strcat(msg, item);
 422                 if(i % 8 == 7) {
 423                         sprintf(item, "\n");
 424                         strcat(msg, item);
 425                         printk(KERN_DEBUG "%s", msg);
 426                 }
 427         }
 428         if (i % 8 != 0) {
 429                 sprintf(item, "\n");
 430                 strcat(msg, item);
 431                 printk(KERN_DEBUG "%s", msg);
 432         }
 433         printk(KERN_DEBUG "\n");
 434
 435         return 0;
 436 }
 437
 438 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 439                        struct atm_vcc *vcc)
 440 {
 441         int old_len;
 442
 443         *(void **)skb->cb = vcc;
 444
 445         spin_lock(&card->tx_queue_lock);
 446         old_len = skb_queue_len(&card->tx_queue[port]);
 447         skb_queue_tail(&card->tx_queue[port], skb);
 448         spin_unlock(&card->tx_queue_lock);
 449
 450         /* If TX might need to be started, do so */
 451         if (!old_len)
 452                 fpga_tx(card);
 453 }
 454
 455 static int fpga_tx(struct solos_card *card)
 456 {
 457         uint32_t tx_pending;
 458         uint32_t tx_started = 0;
 459         struct sk_buff *skb;
 460         struct atm_vcc *vcc;
 461         unsigned char port;
 462         unsigned long flags;
 463
 464         spin_lock_irqsave(&card->tx_lock, flags);
 465
 466         tx_pending = ioread32(card->config_regs + FLAGS_ADDR);
 467
 468         dev_vdbg(&card->dev->dev, "TX Flags are %X\n", tx_pending);
 469
 470         for (port = 0; port < card->nr_ports; port++) {
 471                 if (!(tx_pending & (1 << port))) {
 472
 473                         spin_lock(&card->tx_queue_lock);
 474                         skb = skb_dequeue(&card->tx_queue[port]);
 475                         spin_unlock(&card->tx_queue_lock);
 476
 477                         if (!skb)
 478                                 continue;
 479
 480                         if (atmdebug) {
 481                                 dev_info(&card->dev->dev, "Transmitted: port %d\n",
 482                                          port);
 483                                 print_buffer(skb);
 484                         }
 485                         memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
 486
 487                         vcc = *(void **)skb->cb;
 488
 489                         if (vcc) {
 490                                 atomic_inc(&vcc->stats->tx);
 491                                 solos_pop(vcc, skb);
 492                         } else
 493                                 dev_kfree_skb_irq(skb);
 494
 495                         tx_started |= 1 << port; //Set TX full flag
 496                 }
 497         }
 498         if (tx_started)
 499                 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
 500
 501         spin_unlock_irqrestore(&card->tx_lock, flags);
 502         return 0;
 503 }
 504
 505 static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
 506 {
 507         struct solos_card *card = vcc->dev->dev_data;
 508         struct sk_buff *skb2 = NULL;
 509         struct pkt_hdr *header;
 510
 511         //dev_dbg(&card->dev->dev, "psend called.\n");
 512         //dev_dbg(&card->dev->dev, "dev,vpi,vci = %d,%d,%d\n",SOLOS_CHAN(vcc->dev),vcc->vpi,vcc->vci);
 513
 514         if (debug) {
 515                 skb2 = atm_alloc_charge(vcc, skb->len, GFP_ATOMIC);
 516                 if (skb2) {
 517                         memcpy(skb2->data, skb->data, skb->len);
 518                         skb_put(skb2, skb->len);
 519                         vcc->push(vcc, skb2);
 520                         atomic_inc(&vcc->stats->rx);
 521                 }
 522                 atomic_inc(&vcc->stats->tx);
 523                 solos_pop(vcc, skb);
 524                 return 0;
 525         }
 526
 527         if (skb->len > (BUF_SIZE - sizeof(*header))) {
 528                 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
 529                 solos_pop(vcc, skb);
 530                 return 0;
 531         }
 532
 533         if (!skb_clone_writable(skb, sizeof(*header))) {
 534                 int expand_by = 0;
 535                 int ret;
 536
 537                 if (skb_headroom(skb) < sizeof(*header))
 538                         expand_by = sizeof(*header) - skb_headroom(skb);
 539
 540                 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
 541                 if (ret) {
 542                         solos_pop(vcc, skb);
 543                         return ret;
 544                 }
 545         }
 546
 547         header = (void *)skb_push(skb, sizeof(*header));
 548
 549         header->size = cpu_to_le16(skb->len);
 550         header->vpi = cpu_to_le16(vcc->vpi);
 551         header->vci = cpu_to_le16(vcc->vci);
 552         header->type = cpu_to_le16(PKT_DATA);
 553
 554         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
 555
 556         return 0;
 557 }
 558
 559 static struct atmdev_ops fpga_ops = {
 560         .open =         popen,
 561         .close =        pclose,
 562         .ioctl =        NULL,
 563         .getsockopt =   NULL,
 564         .setsockopt =   NULL,
 565         .send =         psend,
 566         .send_oam =     NULL,
 567         .phy_put =      NULL,
 568         .phy_get =      NULL,
 569         .change_qos =   NULL,
 570         .proc_read =    NULL,
 571         .owner =        THIS_MODULE
 572 };
 573
 574 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
 575 {
 576         int err, i;
 577         uint16_t fpga_ver;
 578         uint8_t major_ver, minor_ver;
 579         uint32_t data32;
 580         struct solos_card *card;
 581
 582         if (debug)
 583                 return 0;
 584
 585         card = kzalloc(sizeof(*card), GFP_KERNEL);
 586         if (!card)
 587                 return -ENOMEM;
 588
 589         card->dev = dev;
 590
 591         err = pci_enable_device(dev);
 592         if (err) {
 593                 dev_warn(&dev->dev,  "Failed to enable PCI device\n");
 594                 goto out;
 595         }
 596
 597         err = pci_request_regions(dev, "solos");
 598         if (err) {
 599                 dev_warn(&dev->dev, "Failed to request regions\n");
 600                 goto out;
 601         }
 602
 603         card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
 604         if (!card->config_regs) {
 605                 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
 606                 goto out_release_regions;
 607         }
 608         card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
 609         if (!card->buffers) {
 610                 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
 611                 goto out_unmap_config;
 612         }
 613
 614 //      for(i=0;i<64 ;i+=4){
 615 //              data32=ioread32(card->buffers + i);
 616 //              dev_dbg(&card->dev->dev, "%08lX\n",(unsigned long)data32);
 617 //      }
 618
 619         //Fill Config Mem with zeros
 620         for(i = 0; i < 128; i += 4)
 621                 iowrite32(0, card->config_regs + i);
 622
 623         //Set RX empty flags
 624         iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
 625
 626         data32 = ioread32(card->config_regs + FPGA_VER);
 627         fpga_ver = (data32 & 0x0000FFFF);
 628         major_ver = ((data32 & 0xFF000000) >> 24);
 629         minor_ver = ((data32 & 0x00FF0000) >> 16);
 630         dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
 631                  major_ver, minor_ver, fpga_ver);
 632
 633         card->nr_ports = 2; /* FIXME: Detect daughterboard */
 634
 635         err = atm_init(card);
 636         if (err)
 637                 goto out_unmap_both;
 638
 639         pci_set_drvdata(dev, card);
 640         tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
 641         spin_lock_init(&card->tx_lock);
 642         spin_lock_init(&card->tx_queue_lock);
 643         spin_lock_init(&card->cli_queue_lock);
 644 /*
 645         // Set Loopback mode
 646         data32 = 0x00010000;
 647         iowrite32(data32,card->config_regs + FLAGS_ADDR);
 648 */
 649 /*
 650         // Fill Buffers with zeros
 651         for (i = 0; i < BUF_SIZE * 8; i += 4)
 652                 iowrite32(0, card->buffers + i);
 653 */
 654 /*
 655         for(i = 0; i < (BUF_SIZE * 1); i += 4)
 656                 iowrite32(0x12345678, card->buffers + i + (0*BUF_SIZE));
 657         for(i = 0; i < (BUF_SIZE * 1); i += 4)
 658                 iowrite32(0xabcdef98, card->buffers + i + (1*BUF_SIZE));
 659
 660         // Read Config Memory
 661         printk(KERN_DEBUG "Reading Config MEM\n");
 662         i = 0;
 663         for(i = 0; i < 16; i++) {
 664                 data32=ioread32(card->buffers + i*(BUF_SIZE/2));
 665                 printk(KERN_ALERT "Addr: %lX Data: %08lX\n",
 666                        (unsigned long)(addr_start + i*(BUF_SIZE/2)),
 667                        (unsigned long)data32);
 668         }
 669 */
 670         //dev_dbg(&card->dev->dev, "Requesting IRQ: %d\n",dev->irq);
 671         err = request_irq(dev->irq, solos_irq, IRQF_DISABLED|IRQF_SHARED,
 672                           "solos-pci", card);
 673         if (err)
 674                 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
 675
 676         // Enable IRQs
 677         iowrite32(1, card->config_regs + IRQ_EN_ADDR);
 678
 679         return 0;
 680
 681  out_unmap_both:
 682         pci_iounmap(dev, card->config_regs);
 683  out_unmap_config:
 684         pci_iounmap(dev, card->buffers);
 685  out_release_regions:
 686         pci_release_regions(dev);
 687  out:
 688         kfree(card);
 689         return err;
 690 }
 691
 692 static int atm_init(struct solos_card *card)
 693 {
 694         int i;
 695
 696         opens = 0;
 697
 698         for (i = 0; i < card->nr_ports; i++) {
 699                 skb_queue_head_init(&card->tx_queue[i]);
 700                 skb_queue_head_init(&card->cli_queue[i]);
 701
 702                 card->atmdev[i] = atm_dev_register("solos-pci", &fpga_ops, -1, NULL);
 703                 if (!card->atmdev[i]) {
 704                         dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
 705                         atm_remove(card);
 706                         return -ENODEV;
 707                 }
 708                 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
 709                         dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
 710
 711                 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
 712
 713                 card->atmdev[i]->ci_range.vpi_bits = 8;
 714                 card->atmdev[i]->ci_range.vci_bits = 16;
 715                 card->atmdev[i]->dev_data = card;
 716                 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
 717         }
 718         return 0;
 719 }
 720
 721 static void atm_remove(struct solos_card *card)
 722 {
 723         int i;
 724
 725         for (i = 0; i < card->nr_ports; i++) {
 726                 if (card->atmdev[i]) {
 727                         dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
 728                         atm_dev_deregister(card->atmdev[i]);
 729                 }
 730         }
 731 }
 732
 733 static void fpga_remove(struct pci_dev *dev)
 734 {
 735         struct solos_card *card = pci_get_drvdata(dev);
 736
 737         if (debug)
 738                 return;
 739
 740         atm_remove(card);
 741
 742         dev_vdbg(&dev->dev, "Freeing IRQ\n");
 743         // Disable IRQs from FPGA
 744         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
 745         free_irq(dev->irq, card);
 746         tasklet_kill(&card->tlet);
 747
 748         //      iowrite32(0x01,pciregs);
 749         dev_vdbg(&dev->dev, "Unmapping PCI resource\n");
 750         pci_iounmap(dev, card->buffers);
 751         pci_iounmap(dev, card->config_regs);
 752
 753         dev_vdbg(&dev->dev, "Releasing PCI Region\n");
 754         pci_release_regions(dev);
 755         pci_disable_device(dev);
 756
 757         pci_set_drvdata(dev, NULL);
 758         kfree(card);
 759 //      dev_dbg(&card->dev->dev, "fpga_remove\n");
 760         return;
 761 }
 762
 763 static struct pci_device_id fpga_pci_tbl[] __devinitdata = {
 764         { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 765         { 0, }
 766 };
 767
 768 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
 769
 770 static struct pci_driver fpga_driver = {
 771         .name =         "solos",
 772         .id_table =     fpga_pci_tbl,
 773         .probe =        fpga_probe,
 774         .remove =       fpga_remove,
 775 };
 776
 777
 778 static int __init solos_pci_init(void)
 779 {
 780         printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
 781         return pci_register_driver(&fpga_driver);
 782 }
 783
 784 static void __exit solos_pci_exit(void)
 785 {
 786         pci_unregister_driver(&fpga_driver);
 787         printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
 788 }
 789
 790 module_init(solos_pci_init);
 791 module_exit(solos_pci_exit);