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 #include <linux/slab.h>
  44
  45 #define VERSION "0.07"
  46 #define PTAG "solos-pci"
  47
  48 #define CONFIG_RAM_SIZE 128
  49 #define FLAGS_ADDR      0x7C
  50 #define IRQ_EN_ADDR     0x78
  51 #define FPGA_VER        0x74
  52 #define IRQ_CLEAR       0x70
  53 #define WRITE_FLASH     0x6C
  54 #define PORTS           0x68
  55 #define FLASH_BLOCK     0x64
  56 #define FLASH_BUSY      0x60
  57 #define FPGA_MODE       0x5C
  58 #define FLASH_MODE      0x58
  59 #define TX_DMA_ADDR(port)       (0x40 + (4 * (port)))
  60 #define RX_DMA_ADDR(port)       (0x30 + (4 * (port)))
  61
  62 #define DATA_RAM_SIZE   32768
  63 #define BUF_SIZE        2048
  64 #define OLD_BUF_SIZE    4096 /* For FPGA versions <= 2*/
  65 #define FPGA_PAGE       528 /* FPGA flash page size*/
  66 #define SOLOS_PAGE      512 /* Solos flash page size*/
  67 #define FPGA_BLOCK      (FPGA_PAGE * 8) /* FPGA flash block size*/
  68 #define SOLOS_BLOCK     (SOLOS_PAGE * 8) /* Solos flash block size*/
  69
  70 #define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
  71 #define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
  72 #define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
  73
  74 #define RX_DMA_SIZE     2048
  75
  76 #define FPGA_VERSION(a,b) (((a) << 8) + (b))
  77 #define LEGACY_BUFFERS  2
  78 #define DMA_SUPPORTED   4
  79
  80 static int reset = 0;
  81 static int atmdebug = 0;
  82 static int firmware_upgrade = 0;
  83 static int fpga_upgrade = 0;
  84 static int db_firmware_upgrade = 0;
  85 static int db_fpga_upgrade = 0;
  86
  87 struct pkt_hdr {
  88         __le16 size;
  89         __le16 vpi;
  90         __le16 vci;
  91         __le16 type;
  92 };
  93
  94 struct solos_skb_cb {
  95         struct atm_vcc *vcc;
  96         uint32_t dma_addr;
  97 };
  98
  99
 100 #define SKB_CB(skb)             ((struct solos_skb_cb *)skb->cb)
 101
 102 #define PKT_DATA        0
 103 #define PKT_COMMAND     1
 104 #define PKT_POPEN       3
 105 #define PKT_PCLOSE      4
 106 #define PKT_STATUS      5
 107
 108 struct solos_card {
 109         void __iomem *config_regs;
 110         void __iomem *buffers;
 111         int nr_ports;
 112         int tx_mask;
 113         struct pci_dev *dev;
 114         struct atm_dev *atmdev[4];
 115         struct tasklet_struct tlet;
 116         spinlock_t tx_lock;
 117         spinlock_t tx_queue_lock;
 118         spinlock_t cli_queue_lock;
 119         spinlock_t param_queue_lock;
 120         struct list_head param_queue;
 121         struct sk_buff_head tx_queue[4];
 122         struct sk_buff_head cli_queue[4];
 123         struct sk_buff *tx_skb[4];
 124         struct sk_buff *rx_skb[4];
 125         wait_queue_head_t param_wq;
 126         wait_queue_head_t fw_wq;
 127         int using_dma;
 128         int fpga_version;
 129         int buffer_size;
 130 };
 131
 132
 133 struct solos_param {
 134         struct list_head list;
 135         pid_t pid;
 136         int port;
 137         struct sk_buff *response;
 138 };
 139
 140 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
 141
 142 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
 143 MODULE_DESCRIPTION("Solos PCI driver");
 144 MODULE_VERSION(VERSION);
 145 MODULE_LICENSE("GPL");
 146 MODULE_FIRMWARE("solos-FPGA.bin");
 147 MODULE_FIRMWARE("solos-Firmware.bin");
 148 MODULE_FIRMWARE("solos-db-FPGA.bin");
 149 MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
 150 MODULE_PARM_DESC(atmdebug, "Print ATM data");
 151 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
 152 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
 153 MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
 154 MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
 155 module_param(reset, int, 0444);
 156 module_param(atmdebug, int, 0644);
 157 module_param(firmware_upgrade, int, 0444);
 158 module_param(fpga_upgrade, int, 0444);
 159 module_param(db_firmware_upgrade, int, 0444);
 160 module_param(db_fpga_upgrade, int, 0444);
 161
 162 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 163                        struct atm_vcc *vcc);
 164 static uint32_t fpga_tx(struct solos_card *);
 165 static irqreturn_t solos_irq(int irq, void *dev_id);
 166 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
 167 static int list_vccs(int vci);
 168 static void release_vccs(struct atm_dev *dev);
 169 static int atm_init(struct solos_card *);
 170 static void atm_remove(struct solos_card *);
 171 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
 172 static void solos_bh(unsigned long);
 173 static int print_buffer(struct sk_buff *buf);
 174
 175 static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
 176 {
 177         if (vcc->pop)
 178                 vcc->pop(vcc, skb);
 179         else
 180                 dev_kfree_skb_any(skb);
 181 }
 182
 183 static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
 184                                 char *buf)
 185 {
 186         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 187         struct solos_card *card = atmdev->dev_data;
 188         struct solos_param prm;
 189         struct sk_buff *skb;
 190         struct pkt_hdr *header;
 191         int buflen;
 192
 193         buflen = strlen(attr->attr.name) + 10;
 194
 195         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 196         if (!skb) {
 197                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
 198                 return -ENOMEM;
 199         }
 200
 201         header = (void *)skb_put(skb, sizeof(*header));
 202
 203         buflen = snprintf((void *)&header[1], buflen - 1,
 204                           "L%05d\n%s\n", current->pid, attr->attr.name);
 205         skb_put(skb, buflen);
 206
 207         header->size = cpu_to_le16(buflen);
 208         header->vpi = cpu_to_le16(0);
 209         header->vci = cpu_to_le16(0);
 210         header->type = cpu_to_le16(PKT_COMMAND);
 211
 212         prm.pid = current->pid;
 213         prm.response = NULL;
 214         prm.port = SOLOS_CHAN(atmdev);
 215
 216         spin_lock_irq(&card->param_queue_lock);
 217         list_add(&prm.list, &card->param_queue);
 218         spin_unlock_irq(&card->param_queue_lock);
 219
 220         fpga_queue(card, prm.port, skb, NULL);
 221
 222         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 223
 224         spin_lock_irq(&card->param_queue_lock);
 225         list_del(&prm.list);
 226         spin_unlock_irq(&card->param_queue_lock);
 227
 228         if (!prm.response)
 229                 return -EIO;
 230
 231         buflen = prm.response->len;
 232         memcpy(buf, prm.response->data, buflen);
 233         kfree_skb(prm.response);
 234
 235         return buflen;
 236 }
 237
 238 static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
 239                                  const char *buf, size_t count)
 240 {
 241         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 242         struct solos_card *card = atmdev->dev_data;
 243         struct solos_param prm;
 244         struct sk_buff *skb;
 245         struct pkt_hdr *header;
 246         int buflen;
 247         ssize_t ret;
 248
 249         buflen = strlen(attr->attr.name) + 11 + count;
 250
 251         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 252         if (!skb) {
 253                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
 254                 return -ENOMEM;
 255         }
 256
 257         header = (void *)skb_put(skb, sizeof(*header));
 258
 259         buflen = snprintf((void *)&header[1], buflen - 1,
 260                           "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
 261
 262         skb_put(skb, buflen);
 263         header->size = cpu_to_le16(buflen);
 264         header->vpi = cpu_to_le16(0);
 265         header->vci = cpu_to_le16(0);
 266         header->type = cpu_to_le16(PKT_COMMAND);
 267
 268         prm.pid = current->pid;
 269         prm.response = NULL;
 270         prm.port = SOLOS_CHAN(atmdev);
 271
 272         spin_lock_irq(&card->param_queue_lock);
 273         list_add(&prm.list, &card->param_queue);
 274         spin_unlock_irq(&card->param_queue_lock);
 275
 276         fpga_queue(card, prm.port, skb, NULL);
 277
 278         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 279
 280         spin_lock_irq(&card->param_queue_lock);
 281         list_del(&prm.list);
 282         spin_unlock_irq(&card->param_queue_lock);
 283
 284         skb = prm.response;
 285
 286         if (!skb)
 287                 return -EIO;
 288
 289         buflen = skb->len;
 290
 291         /* Sometimes it has a newline, sometimes it doesn't. */
 292         if (skb->data[buflen - 1] == '\n')
 293                 buflen--;
 294
 295         if (buflen == 2 && !strncmp(skb->data, "OK", 2))
 296                 ret = count;
 297         else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
 298                 ret = -EIO;
 299         else {
 300                 /* We know we have enough space allocated for this; we allocated
 301                    it ourselves */
 302                 skb->data[buflen] = 0;
 303
 304                 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
 305                          skb->data);
 306                 ret = -EIO;
 307         }
 308         kfree_skb(skb);
 309
 310         return ret;
 311 }
 312
 313 static char *next_string(struct sk_buff *skb)
 314 {
 315         int i = 0;
 316         char *this = skb->data;
 317
 318         for (i = 0; i < skb->len; i++) {
 319                 if (this[i] == '\n') {
 320                         this[i] = 0;
 321                         skb_pull(skb, i + 1);
 322                         return this;
 323                 }
 324                 if (!isprint(this[i]))
 325                         return NULL;
 326         }
 327         return NULL;
 328 }
 329
 330 /*
 331  * Status packet has fields separated by \n, starting with a version number
 332  * for the information therein. Fields are....
 333  *
 334  *     packet version
 335  *     RxBitRate        (version >= 1)
 336  *     TxBitRate        (version >= 1)
 337  *     State            (version >= 1)
 338  *     LocalSNRMargin   (version >= 1)
 339  *     LocalLineAttn    (version >= 1)
 340  */
 341 static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
 342 {
 343         char *str, *end, *state_str, *snr, *attn;
 344         int ver, rate_up, rate_down;
 345
 346         if (!card->atmdev[port])
 347                 return -ENODEV;
 348
 349         str = next_string(skb);
 350         if (!str)
 351                 return -EIO;
 352
 353         ver = simple_strtol(str, NULL, 10);
 354         if (ver < 1) {
 355                 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
 356                          ver);
 357                 return -EIO;
 358         }
 359
 360         str = next_string(skb);
 361         if (!str)
 362                 return -EIO;
 363         if (!strcmp(str, "ERROR")) {
 364                 dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
 365                          port);
 366                 return 0;
 367         }
 368
 369         rate_down = simple_strtol(str, &end, 10);
 370         if (*end)
 371                 return -EIO;
 372
 373         str = next_string(skb);
 374         if (!str)
 375                 return -EIO;
 376         rate_up = simple_strtol(str, &end, 10);
 377         if (*end)
 378                 return -EIO;
 379
 380         state_str = next_string(skb);
 381         if (!state_str)
 382                 return -EIO;
 383
 384         /* Anything but 'Showtime' is down */
 385         if (strcmp(state_str, "Showtime")) {
 386                 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
 387                 release_vccs(card->atmdev[port]);
 388                 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
 389                 return 0;
 390         }
 391
 392         snr = next_string(skb);
 393         if (!snr)
 394                 return -EIO;
 395         attn = next_string(skb);
 396         if (!attn)
 397                 return -EIO;
 398
 399         dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
 400                  port, state_str, rate_down/1000, rate_up/1000,
 401                  snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
 402
 403         card->atmdev[port]->link_rate = rate_down / 424;
 404         atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
 405
 406         return 0;
 407 }
 408
 409 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
 410 {
 411         struct solos_param *prm;
 412         unsigned long flags;
 413         int cmdpid;
 414         int found = 0;
 415
 416         if (skb->len < 7)
 417                 return 0;
 418
 419         if (skb->data[0] != 'L'    || !isdigit(skb->data[1]) ||
 420             !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
 421             !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
 422             skb->data[6] != '\n')
 423                 return 0;
 424
 425         cmdpid = simple_strtol(&skb->data[1], NULL, 10);
 426
 427         spin_lock_irqsave(&card->param_queue_lock, flags);
 428         list_for_each_entry(prm, &card->param_queue, list) {
 429                 if (prm->port == port && prm->pid == cmdpid) {
 430                         prm->response = skb;
 431                         skb_pull(skb, 7);
 432                         wake_up(&card->param_wq);
 433                         found = 1;
 434                         break;
 435                 }
 436         }
 437         spin_unlock_irqrestore(&card->param_queue_lock, flags);
 438         return found;
 439 }
 440
 441 static ssize_t console_show(struct device *dev, struct device_attribute *attr,
 442                             char *buf)
 443 {
 444         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 445         struct solos_card *card = atmdev->dev_data;
 446         struct sk_buff *skb;
 447         unsigned int len;
 448
 449         spin_lock(&card->cli_queue_lock);
 450         skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
 451         spin_unlock(&card->cli_queue_lock);
 452         if(skb == NULL)
 453                 return sprintf(buf, "No data.\n");
 454
 455         len = skb->len;
 456         memcpy(buf, skb->data, len);
 457         dev_dbg(&card->dev->dev, "len: %d\n", len);
 458
 459         kfree_skb(skb);
 460         return len;
 461 }
 462
 463 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
 464 {
 465         struct sk_buff *skb;
 466         struct pkt_hdr *header;
 467
 468         if (size > (BUF_SIZE - sizeof(*header))) {
 469                 dev_dbg(&card->dev->dev, "Command is too big.  Dropping request\n");
 470                 return 0;
 471         }
 472         skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
 473         if (!skb) {
 474                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
 475                 return 0;
 476         }
 477
 478         header = (void *)skb_put(skb, sizeof(*header));
 479
 480         header->size = cpu_to_le16(size);
 481         header->vpi = cpu_to_le16(0);
 482         header->vci = cpu_to_le16(0);
 483         header->type = cpu_to_le16(PKT_COMMAND);
 484
 485         memcpy(skb_put(skb, size), buf, size);
 486
 487         fpga_queue(card, dev, skb, NULL);
 488
 489         return 0;
 490 }
 491
 492 static ssize_t console_store(struct device *dev, struct device_attribute *attr,
 493                              const char *buf, size_t count)
 494 {
 495         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 496         struct solos_card *card = atmdev->dev_data;
 497         int err;
 498
 499         err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
 500
 501         return err?:count;
 502 }
 503
 504 static DEVICE_ATTR(console, 0644, console_show, console_store);
 505
 506
 507 #define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
 508 #define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
 509
 510 #include "solos-attrlist.c"
 511
 512 #undef SOLOS_ATTR_RO
 513 #undef SOLOS_ATTR_RW
 514
 515 #define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
 516 #define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
 517
 518 static struct attribute *solos_attrs[] = {
 519 #include "solos-attrlist.c"
 520         NULL
 521 };
 522
 523 static struct attribute_group solos_attr_group = {
 524         .attrs = solos_attrs,
 525         .name = "parameters",
 526 };
 527
 528 static int flash_upgrade(struct solos_card *card, int chip)
 529 {
 530         const struct firmware *fw;
 531         const char *fw_name;
 532         uint32_t data32 = 0;
 533         int blocksize = 0;
 534         int numblocks = 0;
 535         int offset;
 536
 537         switch (chip) {
 538         case 0:
 539                 fw_name = "solos-FPGA.bin";
 540                 blocksize = FPGA_BLOCK;
 541                 break;
 542         case 1:
 543                 fw_name = "solos-Firmware.bin";
 544                 blocksize = SOLOS_BLOCK;
 545                 break;
 546         case 2:
 547                 if (card->fpga_version > LEGACY_BUFFERS){
 548                         fw_name = "solos-db-FPGA.bin";
 549                         blocksize = FPGA_BLOCK;
 550                 } else {
 551                         dev_info(&card->dev->dev, "FPGA version doesn't support"
 552                                         " daughter board upgrades\n");
 553                         return -EPERM;
 554                 }
 555                 break;
 556         case 3:
 557                 if (card->fpga_version > LEGACY_BUFFERS){
 558                         fw_name = "solos-Firmware.bin";
 559                         blocksize = SOLOS_BLOCK;
 560                 } else {
 561                         dev_info(&card->dev->dev, "FPGA version doesn't support"
 562                                         " daughter board upgrades\n");
 563                         return -EPERM;
 564                 }
 565                 break;
 566         default:
 567                 return -ENODEV;
 568         }
 569
 570         if (request_firmware(&fw, fw_name, &card->dev->dev))
 571                 return -ENOENT;
 572
 573         dev_info(&card->dev->dev, "Flash upgrade starting\n");
 574
 575         numblocks = fw->size / blocksize;
 576         dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
 577         dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
 578
 579         dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
 580         iowrite32(1, card->config_regs + FPGA_MODE);
 581         data32 = ioread32(card->config_regs + FPGA_MODE);
 582
 583         /* Set mode to Chip Erase */
 584         if(chip == 0 || chip == 2)
 585                 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
 586         if(chip == 1 || chip == 3)
 587                 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
 588         iowrite32((chip * 2), card->config_regs + FLASH_MODE);
 589
 590
 591         iowrite32(1, card->config_regs + WRITE_FLASH);
 592         wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 593
 594         for (offset = 0; offset < fw->size; offset += blocksize) {
 595                 int i;
 596
 597                 /* Clear write flag */
 598                 iowrite32(0, card->config_regs + WRITE_FLASH);
 599
 600                 /* Set mode to Block Write */
 601                 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
 602                 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
 603
 604                 /* Copy block to buffer, swapping each 16 bits */
 605                 for(i = 0; i < blocksize; i += 4) {
 606                         uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i));
 607                         if(card->fpga_version > LEGACY_BUFFERS)
 608                                 iowrite32(word, FLASH_BUF + i);
 609                         else
 610                                 iowrite32(word, RX_BUF(card, 3) + i);
 611                 }
 612
 613                 /* Specify block number and then trigger flash write */
 614                 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
 615                 iowrite32(1, card->config_regs + WRITE_FLASH);
 616                 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 617         }
 618
 619         release_firmware(fw);
 620         iowrite32(0, card->config_regs + WRITE_FLASH);
 621         iowrite32(0, card->config_regs + FPGA_MODE);
 622         iowrite32(0, card->config_regs + FLASH_MODE);
 623         dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
 624         return 0;
 625 }
 626
 627 static irqreturn_t solos_irq(int irq, void *dev_id)
 628 {
 629         struct solos_card *card = dev_id;
 630         int handled = 1;
 631
 632         iowrite32(0, card->config_regs + IRQ_CLEAR);
 633
 634         /* If we're up and running, just kick the tasklet to process TX/RX */
 635         if (card->atmdev[0])
 636                 tasklet_schedule(&card->tlet);
 637         else
 638                 wake_up(&card->fw_wq);
 639
 640         return IRQ_RETVAL(handled);
 641 }
 642
 643 void solos_bh(unsigned long card_arg)
 644 {
 645         struct solos_card *card = (void *)card_arg;
 646         uint32_t card_flags;
 647         uint32_t rx_done = 0;
 648         int port;
 649
 650         /*
 651          * Since fpga_tx() is going to need to read the flags under its lock,
 652          * it can return them to us so that we don't have to hit PCI MMIO
 653          * again for the same information
 654          */
 655         card_flags = fpga_tx(card);
 656
 657         for (port = 0; port < card->nr_ports; port++) {
 658                 if (card_flags & (0x10 << port)) {
 659                         struct pkt_hdr _hdr, *header;
 660                         struct sk_buff *skb;
 661                         struct atm_vcc *vcc;
 662                         int size;
 663
 664                         if (card->using_dma) {
 665                                 skb = card->rx_skb[port];
 666                                 card->rx_skb[port] = NULL;
 667
 668                                 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
 669                                                  RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
 670
 671                                 header = (void *)skb->data;
 672                                 size = le16_to_cpu(header->size);
 673                                 skb_put(skb, size + sizeof(*header));
 674                                 skb_pull(skb, sizeof(*header));
 675                         } else {
 676                                 header = &_hdr;
 677
 678                                 rx_done |= 0x10 << port;
 679
 680                                 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
 681
 682                                 size = le16_to_cpu(header->size);
 683                                 if (size > (card->buffer_size - sizeof(*header))){
 684                                         dev_warn(&card->dev->dev, "Invalid buffer size\n");
 685                                         continue;
 686                                 }
 687
 688                                 skb = alloc_skb(size + 1, GFP_ATOMIC);
 689                                 if (!skb) {
 690                                         if (net_ratelimit())
 691                                                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
 692                                         continue;
 693                                 }
 694
 695                                 memcpy_fromio(skb_put(skb, size),
 696                                               RX_BUF(card, port) + sizeof(*header),
 697                                               size);
 698                         }
 699                         if (atmdebug) {
 700                                 dev_info(&card->dev->dev, "Received: device %d\n", port);
 701                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
 702                                          size, le16_to_cpu(header->vpi),
 703                                          le16_to_cpu(header->vci));
 704                                 print_buffer(skb);
 705                         }
 706
 707                         switch (le16_to_cpu(header->type)) {
 708                         case PKT_DATA:
 709                                 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
 710                                                le16_to_cpu(header->vci));
 711                                 if (!vcc) {
 712                                         if (net_ratelimit())
 713                                                 dev_warn(&card->dev->dev, "Received packet for unknown VCI.VPI %d.%d on port %d\n",
 714                                                          le16_to_cpu(header->vci), le16_to_cpu(header->vpi),
 715                                                          port);
 716                                         continue;
 717                                 }
 718                                 atm_charge(vcc, skb->truesize);
 719                                 vcc->push(vcc, skb);
 720                                 atomic_inc(&vcc->stats->rx);
 721                                 break;
 722
 723                         case PKT_STATUS:
 724                                 if (process_status(card, port, skb) &&
 725                                     net_ratelimit()) {
 726                                         dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
 727                                         print_buffer(skb);
 728                                 }
 729                                 dev_kfree_skb_any(skb);
 730                                 break;
 731
 732                         case PKT_COMMAND:
 733                         default: /* FIXME: Not really, surely? */
 734                                 if (process_command(card, port, skb))
 735                                         break;
 736                                 spin_lock(&card->cli_queue_lock);
 737                                 if (skb_queue_len(&card->cli_queue[port]) > 10) {
 738                                         if (net_ratelimit())
 739                                                 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
 740                                                          port);
 741                                         dev_kfree_skb_any(skb);
 742                                 } else
 743                                         skb_queue_tail(&card->cli_queue[port], skb);
 744                                 spin_unlock(&card->cli_queue_lock);
 745                                 break;
 746                         }
 747                 }
 748                 /* Allocate RX skbs for any ports which need them */
 749                 if (card->using_dma && card->atmdev[port] &&
 750                     !card->rx_skb[port]) {
 751                         struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC);
 752                         if (skb) {
 753                                 SKB_CB(skb)->dma_addr =
 754                                         pci_map_single(card->dev, skb->data,
 755                                                        RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
 756                                 iowrite32(SKB_CB(skb)->dma_addr,
 757                                           card->config_regs + RX_DMA_ADDR(port));
 758                                 card->rx_skb[port] = skb;
 759                         } else {
 760                                 if (net_ratelimit())
 761                                         dev_warn(&card->dev->dev, "Failed to allocate RX skb");
 762
 763                                 /* We'll have to try again later */
 764                                 tasklet_schedule(&card->tlet);
 765                         }
 766                 }
 767         }
 768         if (rx_done)
 769                 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
 770
 771         return;
 772 }
 773
 774 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
 775 {
 776         struct hlist_head *head;
 777         struct atm_vcc *vcc = NULL;
 778         struct hlist_node *node;
 779         struct sock *s;
 780
 781         read_lock(&vcc_sklist_lock);
 782         head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 783         sk_for_each(s, node, head) {
 784                 vcc = atm_sk(s);
 785                 if (vcc->dev == dev && vcc->vci == vci &&
 786                     vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
 787                     test_bit(ATM_VF_READY, &vcc->flags))
 788                         goto out;
 789         }
 790         vcc = NULL;
 791  out:
 792         read_unlock(&vcc_sklist_lock);
 793         return vcc;
 794 }
 795
 796 static int list_vccs(int vci)
 797 {
 798         struct hlist_head *head;
 799         struct atm_vcc *vcc;
 800         struct hlist_node *node;
 801         struct sock *s;
 802         int num_found = 0;
 803         int i;
 804
 805         read_lock(&vcc_sklist_lock);
 806         if (vci != 0){
 807                 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 808                 sk_for_each(s, node, head) {
 809                         num_found ++;
 810                         vcc = atm_sk(s);
 811                         printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
 812                                vcc->dev->number,
 813                                vcc->vpi,
 814                                vcc->vci);
 815                 }
 816         } else {
 817                 for(i = 0; i < VCC_HTABLE_SIZE; i++){
 818                         head = &vcc_hash[i];
 819                         sk_for_each(s, node, head) {
 820                                 num_found ++;
 821                                 vcc = atm_sk(s);
 822                                 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
 823                                        vcc->dev->number,
 824                                        vcc->vpi,
 825                                        vcc->vci);
 826                         }
 827                 }
 828         }
 829         read_unlock(&vcc_sklist_lock);
 830         return num_found;
 831 }
 832
 833 static void release_vccs(struct atm_dev *dev)
 834 {
 835         int i;
 836
 837         write_lock_irq(&vcc_sklist_lock);
 838         for (i = 0; i < VCC_HTABLE_SIZE; i++) {
 839                 struct hlist_head *head = &vcc_hash[i];
 840                 struct hlist_node *node, *tmp;
 841                 struct sock *s;
 842                 struct atm_vcc *vcc;
 843
 844                 sk_for_each_safe(s, node, tmp, head) {
 845                         vcc = atm_sk(s);
 846                         if (vcc->dev == dev) {
 847                                 vcc_release_async(vcc, -EPIPE);
 848                                 sk_del_node_init(s);
 849                         }
 850                 }
 851         }
 852         write_unlock_irq(&vcc_sklist_lock);
 853 }
 854
 855
 856 static int popen(struct atm_vcc *vcc)
 857 {
 858         struct solos_card *card = vcc->dev->dev_data;
 859         struct sk_buff *skb;
 860         struct pkt_hdr *header;
 861
 862         if (vcc->qos.aal != ATM_AAL5) {
 863                 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
 864                          vcc->qos.aal);
 865                 return -EINVAL;
 866         }
 867
 868         skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
 869         if (!skb && net_ratelimit()) {
 870                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
 871                 return -ENOMEM;
 872         }
 873         header = (void *)skb_put(skb, sizeof(*header));
 874
 875         header->size = cpu_to_le16(0);
 876         header->vpi = cpu_to_le16(vcc->vpi);
 877         header->vci = cpu_to_le16(vcc->vci);
 878         header->type = cpu_to_le16(PKT_POPEN);
 879
 880         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 881
 882         set_bit(ATM_VF_ADDR, &vcc->flags);
 883         set_bit(ATM_VF_READY, &vcc->flags);
 884         list_vccs(0);
 885
 886
 887         return 0;
 888 }
 889
 890 static void pclose(struct atm_vcc *vcc)
 891 {
 892         struct solos_card *card = vcc->dev->dev_data;
 893         struct sk_buff *skb;
 894         struct pkt_hdr *header;
 895
 896         skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
 897         if (!skb) {
 898                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
 899                 return;
 900         }
 901         header = (void *)skb_put(skb, sizeof(*header));
 902
 903         header->size = cpu_to_le16(0);
 904         header->vpi = cpu_to_le16(vcc->vpi);
 905         header->vci = cpu_to_le16(vcc->vci);
 906         header->type = cpu_to_le16(PKT_PCLOSE);
 907
 908         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 909
 910         clear_bit(ATM_VF_ADDR, &vcc->flags);
 911         clear_bit(ATM_VF_READY, &vcc->flags);
 912
 913         /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
 914            tasklet has finished processing any incoming packets (and, more to
 915            the point, using the vcc pointer). */
 916         tasklet_unlock_wait(&card->tlet);
 917         return;
 918 }
 919
 920 static int print_buffer(struct sk_buff *buf)
 921 {
 922         int len,i;
 923         char msg[500];
 924         char item[10];
 925
 926         len = buf->len;
 927         for (i = 0; i < len; i++){
 928                 if(i % 8 == 0)
 929                         sprintf(msg, "%02X: ", i);
 930
 931                 sprintf(item,"%02X ",*(buf->data + i));
 932                 strcat(msg, item);
 933                 if(i % 8 == 7) {
 934                         sprintf(item, "\n");
 935                         strcat(msg, item);
 936                         printk(KERN_DEBUG "%s", msg);
 937                 }
 938         }
 939         if (i % 8 != 0) {
 940                 sprintf(item, "\n");
 941                 strcat(msg, item);
 942                 printk(KERN_DEBUG "%s", msg);
 943         }
 944         printk(KERN_DEBUG "\n");
 945
 946         return 0;
 947 }
 948
 949 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 950                        struct atm_vcc *vcc)
 951 {
 952         int old_len;
 953         unsigned long flags;
 954
 955         SKB_CB(skb)->vcc = vcc;
 956
 957         spin_lock_irqsave(&card->tx_queue_lock, flags);
 958         old_len = skb_queue_len(&card->tx_queue[port]);
 959         skb_queue_tail(&card->tx_queue[port], skb);
 960         if (!old_len)
 961                 card->tx_mask |= (1 << port);
 962         spin_unlock_irqrestore(&card->tx_queue_lock, flags);
 963
 964         /* Theoretically we could just schedule the tasklet here, but
 965            that introduces latency we don't want -- it's noticeable */
 966         if (!old_len)
 967                 fpga_tx(card);
 968 }
 969
 970 static uint32_t fpga_tx(struct solos_card *card)
 971 {
 972         uint32_t tx_pending, card_flags;
 973         uint32_t tx_started = 0;
 974         struct sk_buff *skb;
 975         struct atm_vcc *vcc;
 976         unsigned char port;
 977         unsigned long flags;
 978
 979         spin_lock_irqsave(&card->tx_lock, flags);
 980
 981         card_flags = ioread32(card->config_regs + FLAGS_ADDR);
 982         /*
 983          * The queue lock is required for _writing_ to tx_mask, but we're
 984          * OK to read it here without locking. The only potential update
 985          * that we could race with is in fpga_queue() where it sets a bit
 986          * for a new port... but it's going to call this function again if
 987          * it's doing that, anyway.
 988          */
 989         tx_pending = card->tx_mask & ~card_flags;
 990
 991         for (port = 0; tx_pending; tx_pending >>= 1, port++) {
 992                 if (tx_pending & 1) {
 993                         struct sk_buff *oldskb = card->tx_skb[port];
 994                         if (oldskb)
 995                                 pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr,
 996                                                  oldskb->len, PCI_DMA_TODEVICE);
 997
 998                         spin_lock(&card->tx_queue_lock);
 999                         skb = skb_dequeue(&card->tx_queue[port]);
1000                         if (!skb)
1001                                 card->tx_mask &= ~(1 << port);
1002                         spin_unlock(&card->tx_queue_lock);
1003
1004                         if (skb && !card->using_dma) {
1005                                 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
1006                                 tx_started |= 1 << port;
1007                                 oldskb = skb; /* We're done with this skb already */
1008                         } else if (skb && card->using_dma) {
1009                                 SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data,
1010                                                                        skb->len, PCI_DMA_TODEVICE);
1011                                 iowrite32(SKB_CB(skb)->dma_addr,
1012                                           card->config_regs + TX_DMA_ADDR(port));
1013                         }
1014
1015                         if (!oldskb)
1016                                 continue;
1017
1018                         /* Clean up and free oldskb now it's gone */
1019                         if (atmdebug) {
1020                                 dev_info(&card->dev->dev, "Transmitted: port %d\n",
1021                                          port);
1022                                 print_buffer(oldskb);
1023                         }
1024
1025                         vcc = SKB_CB(oldskb)->vcc;
1026
1027                         if (vcc) {
1028                                 atomic_inc(&vcc->stats->tx);
1029                                 solos_pop(vcc, oldskb);
1030                         } else
1031                                 dev_kfree_skb_irq(oldskb);
1032
1033                 }
1034         }
1035         /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
1036         if (tx_started)
1037                 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1038
1039         spin_unlock_irqrestore(&card->tx_lock, flags);
1040         return card_flags;
1041 }
1042
1043 static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1044 {
1045         struct solos_card *card = vcc->dev->dev_data;
1046         struct pkt_hdr *header;
1047         int pktlen;
1048
1049         pktlen = skb->len;
1050         if (pktlen > (BUF_SIZE - sizeof(*header))) {
1051                 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1052                 solos_pop(vcc, skb);
1053                 return 0;
1054         }
1055
1056         if (!skb_clone_writable(skb, sizeof(*header))) {
1057                 int expand_by = 0;
1058                 int ret;
1059
1060                 if (skb_headroom(skb) < sizeof(*header))
1061                         expand_by = sizeof(*header) - skb_headroom(skb);
1062
1063                 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1064                 if (ret) {
1065                         dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1066                         solos_pop(vcc, skb);
1067                         return ret;
1068                 }
1069         }
1070
1071         header = (void *)skb_push(skb, sizeof(*header));
1072
1073         /* This does _not_ include the size of the header */
1074         header->size = cpu_to_le16(pktlen);
1075         header->vpi = cpu_to_le16(vcc->vpi);
1076         header->vci = cpu_to_le16(vcc->vci);
1077         header->type = cpu_to_le16(PKT_DATA);
1078
1079         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1080
1081         return 0;
1082 }
1083
1084 static struct atmdev_ops fpga_ops = {
1085         .open =         popen,
1086         .close =        pclose,
1087         .ioctl =        NULL,
1088         .getsockopt =   NULL,
1089         .setsockopt =   NULL,
1090         .send =         psend,
1091         .send_oam =     NULL,
1092         .phy_put =      NULL,
1093         .phy_get =      NULL,
1094         .change_qos =   NULL,
1095         .proc_read =    NULL,
1096         .owner =        THIS_MODULE
1097 };
1098
1099 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1100 {
1101         int err;
1102         uint16_t fpga_ver;
1103         uint8_t major_ver, minor_ver;
1104         uint32_t data32;
1105         struct solos_card *card;
1106
1107         card = kzalloc(sizeof(*card), GFP_KERNEL);
1108         if (!card)
1109                 return -ENOMEM;
1110
1111         card->dev = dev;
1112         init_waitqueue_head(&card->fw_wq);
1113         init_waitqueue_head(&card->param_wq);
1114
1115         err = pci_enable_device(dev);
1116         if (err) {
1117                 dev_warn(&dev->dev,  "Failed to enable PCI device\n");
1118                 goto out;
1119         }
1120
1121         err = pci_set_dma_mask(dev, DMA_BIT_MASK(32));
1122         if (err) {
1123                 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1124                 goto out;
1125         }
1126
1127         err = pci_request_regions(dev, "solos");
1128         if (err) {
1129                 dev_warn(&dev->dev, "Failed to request regions\n");
1130                 goto out;
1131         }
1132
1133         card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1134         if (!card->config_regs) {
1135                 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1136                 goto out_release_regions;
1137         }
1138         card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1139         if (!card->buffers) {
1140                 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1141                 goto out_unmap_config;
1142         }
1143
1144         if (reset) {
1145                 iowrite32(1, card->config_regs + FPGA_MODE);
1146                 data32 = ioread32(card->config_regs + FPGA_MODE);
1147
1148                 iowrite32(0, card->config_regs + FPGA_MODE);
1149                 data32 = ioread32(card->config_regs + FPGA_MODE);
1150         }
1151
1152         data32 = ioread32(card->config_regs + FPGA_VER);
1153         fpga_ver = (data32 & 0x0000FFFF);
1154         major_ver = ((data32 & 0xFF000000) >> 24);
1155         minor_ver = ((data32 & 0x00FF0000) >> 16);
1156         card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1157         if (card->fpga_version > LEGACY_BUFFERS)
1158                 card->buffer_size = BUF_SIZE;
1159         else
1160                 card->buffer_size = OLD_BUF_SIZE;
1161         dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1162                  major_ver, minor_ver, fpga_ver);
1163
1164         if (card->fpga_version >= DMA_SUPPORTED){
1165                 card->using_dma = 1;
1166         } else {
1167                 card->using_dma = 0;
1168                 /* Set RX empty flag for all ports */
1169                 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1170         }
1171
1172         data32 = ioread32(card->config_regs + PORTS);
1173         card->nr_ports = (data32 & 0x000000FF);
1174
1175         pci_set_drvdata(dev, card);
1176
1177         tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1178         spin_lock_init(&card->tx_lock);
1179         spin_lock_init(&card->tx_queue_lock);
1180         spin_lock_init(&card->cli_queue_lock);
1181         spin_lock_init(&card->param_queue_lock);
1182         INIT_LIST_HEAD(&card->param_queue);
1183
1184         err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1185                           "solos-pci", card);
1186         if (err) {
1187                 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1188                 goto out_unmap_both;
1189         }
1190
1191         iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1192
1193         if (fpga_upgrade)
1194                 flash_upgrade(card, 0);
1195
1196         if (firmware_upgrade)
1197                 flash_upgrade(card, 1);
1198
1199         if (db_fpga_upgrade)
1200                 flash_upgrade(card, 2);
1201
1202         if (db_firmware_upgrade)
1203                 flash_upgrade(card, 3);
1204
1205         err = atm_init(card);
1206         if (err)
1207                 goto out_free_irq;
1208
1209         return 0;
1210
1211  out_free_irq:
1212         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1213         free_irq(dev->irq, card);
1214         tasklet_kill(&card->tlet);
1215
1216  out_unmap_both:
1217         pci_set_drvdata(dev, NULL);
1218         pci_iounmap(dev, card->config_regs);
1219  out_unmap_config:
1220         pci_iounmap(dev, card->buffers);
1221  out_release_regions:
1222         pci_release_regions(dev);
1223  out:
1224         kfree(card);
1225         return err;
1226 }
1227
1228 static int atm_init(struct solos_card *card)
1229 {
1230         int i;
1231
1232         for (i = 0; i < card->nr_ports; i++) {
1233                 struct sk_buff *skb;
1234                 struct pkt_hdr *header;
1235
1236                 skb_queue_head_init(&card->tx_queue[i]);
1237                 skb_queue_head_init(&card->cli_queue[i]);
1238
1239                 card->atmdev[i] = atm_dev_register("solos-pci", &fpga_ops, -1, NULL);
1240                 if (!card->atmdev[i]) {
1241                         dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1242                         atm_remove(card);
1243                         return -ENODEV;
1244                 }
1245                 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1246                         dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1247                 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1248                         dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1249
1250                 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1251
1252                 card->atmdev[i]->ci_range.vpi_bits = 8;
1253                 card->atmdev[i]->ci_range.vci_bits = 16;
1254                 card->atmdev[i]->dev_data = card;
1255                 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1256                 atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_UNKNOWN);
1257
1258                 skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
1259                 if (!skb) {
1260                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1261                         continue;
1262                 }
1263
1264                 header = (void *)skb_put(skb, sizeof(*header));
1265
1266                 header->size = cpu_to_le16(0);
1267                 header->vpi = cpu_to_le16(0);
1268                 header->vci = cpu_to_le16(0);
1269                 header->type = cpu_to_le16(PKT_STATUS);
1270
1271                 fpga_queue(card, i, skb, NULL);
1272         }
1273         return 0;
1274 }
1275
1276 static void atm_remove(struct solos_card *card)
1277 {
1278         int i;
1279
1280         for (i = 0; i < card->nr_ports; i++) {
1281                 if (card->atmdev[i]) {
1282                         struct sk_buff *skb;
1283
1284                         dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1285
1286                         sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1287                         atm_dev_deregister(card->atmdev[i]);
1288
1289                         skb = card->rx_skb[i];
1290                         if (skb) {
1291                                 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1292                                                  RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
1293                                 dev_kfree_skb(skb);
1294                         }
1295                         skb = card->tx_skb[i];
1296                         if (skb) {
1297                                 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1298                                                  skb->len, PCI_DMA_TODEVICE);
1299                                 dev_kfree_skb(skb);
1300                         }
1301                         while ((skb = skb_dequeue(&card->tx_queue[i])))
1302                                 dev_kfree_skb(skb);
1303
1304                 }
1305         }
1306 }
1307
1308 static void fpga_remove(struct pci_dev *dev)
1309 {
1310         struct solos_card *card = pci_get_drvdata(dev);
1311
1312         /* Disable IRQs */
1313         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1314
1315         /* Reset FPGA */
1316         iowrite32(1, card->config_regs + FPGA_MODE);
1317         (void)ioread32(card->config_regs + FPGA_MODE);
1318
1319         atm_remove(card);
1320
1321         free_irq(dev->irq, card);
1322         tasklet_kill(&card->tlet);
1323
1324         /* Release device from reset */
1325         iowrite32(0, card->config_regs + FPGA_MODE);
1326         (void)ioread32(card->config_regs + FPGA_MODE);
1327
1328         pci_iounmap(dev, card->buffers);
1329         pci_iounmap(dev, card->config_regs);
1330
1331         pci_release_regions(dev);
1332         pci_disable_device(dev);
1333
1334         pci_set_drvdata(dev, NULL);
1335         kfree(card);
1336 }
1337
1338 static struct pci_device_id fpga_pci_tbl[] __devinitdata = {
1339         { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1340         { 0, }
1341 };
1342
1343 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1344
1345 static struct pci_driver fpga_driver = {
1346         .name =         "solos",
1347         .id_table =     fpga_pci_tbl,
1348         .probe =        fpga_probe,
1349         .remove =       fpga_remove,
1350 };
1351
1352
1353 static int __init solos_pci_init(void)
1354 {
1355         printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1356         return pci_register_driver(&fpga_driver);
1357 }
1358
1359 static void __exit solos_pci_exit(void)
1360 {
1361         pci_unregister_driver(&fpga_driver);
1362         printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1363 }
1364
1365 module_init(solos_pci_init);
1366 module_exit(solos_pci_exit);