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  *          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
  59 #define DATA_RAM_SIZE   32768
  60 #define BUF_SIZE        4096
  61 #define FPGA_PAGE       528 /* FPGA flash page size*/
  62 #define SOLOS_PAGE      512 /* Solos flash page size*/
  63 #define FPGA_BLOCK      (FPGA_PAGE * 8) /* FPGA flash block size*/
  64 #define SOLOS_BLOCK     (SOLOS_PAGE * 8) /* Solos flash block size*/
  65
  66 #define RX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2)
  67 #define TX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2 + BUF_SIZE)
  68
  69 static int debug = 0;
  70 static int atmdebug = 0;
  71 static int firmware_upgrade = 0;
  72 static int fpga_upgrade = 0;
  73
  74 struct pkt_hdr {
  75         __le16 size;
  76         __le16 vpi;
  77         __le16 vci;
  78         __le16 type;
  79 };
  80
  81 #define PKT_DATA        0
  82 #define PKT_COMMAND     1
  83 #define PKT_POPEN       3
  84 #define PKT_PCLOSE      4
  85
  86 struct solos_card {
  87         void __iomem *config_regs;
  88         void __iomem *buffers;
  89         int nr_ports;
  90         struct pci_dev *dev;
  91         struct atm_dev *atmdev[4];
  92         struct tasklet_struct tlet;
  93         spinlock_t tx_lock;
  94         spinlock_t tx_queue_lock;
  95         spinlock_t cli_queue_lock;
  96         spinlock_t param_queue_lock;
  97         struct list_head param_queue;
  98         struct sk_buff_head tx_queue[4];
  99         struct sk_buff_head cli_queue[4];
 100         wait_queue_head_t param_wq;
 101         wait_queue_head_t fw_wq;
 102 };
 103
 104
 105 struct solos_param {
 106         struct list_head list;
 107         pid_t pid;
 108         int port;
 109         struct sk_buff *response;
 110         wait_queue_head_t wq;
 111 };
 112
 113 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
 114
 115 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
 116 MODULE_DESCRIPTION("Solos PCI driver");
 117 MODULE_VERSION(VERSION);
 118 MODULE_LICENSE("GPL");
 119 MODULE_PARM_DESC(debug, "Enable Loopback");
 120 MODULE_PARM_DESC(atmdebug, "Print ATM data");
 121 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
 122 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
 123 module_param(debug, int, 0444);
 124 module_param(atmdebug, int, 0644);
 125 module_param(firmware_upgrade, int, 0444);
 126 module_param(fpga_upgrade, int, 0444);
 127
 128 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 129                        struct atm_vcc *vcc);
 130 static int fpga_tx(struct solos_card *);
 131 static irqreturn_t solos_irq(int irq, void *dev_id);
 132 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
 133 static int list_vccs(int vci);
 134 static int atm_init(struct solos_card *);
 135 static void atm_remove(struct solos_card *);
 136 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
 137 static void solos_bh(unsigned long);
 138 static int print_buffer(struct sk_buff *buf);
 139
 140 static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
 141 {
 142         if (vcc->pop)
 143                 vcc->pop(vcc, skb);
 144         else
 145                 dev_kfree_skb_any(skb);
 146 }
 147
 148 static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
 149                                 char *buf)
 150 {
 151         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 152         struct solos_card *card = atmdev->dev_data;
 153         struct solos_param prm;
 154         struct sk_buff *skb;
 155         struct pkt_hdr *header;
 156         int buflen;
 157
 158         buflen = strlen(attr->attr.name) + 10;
 159
 160         skb = alloc_skb(buflen, GFP_KERNEL);
 161         if (!skb) {
 162                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
 163                 return -ENOMEM;
 164         }
 165
 166         header = (void *)skb_put(skb, sizeof(*header));
 167
 168         buflen = snprintf((void *)&header[1], buflen - 1,
 169                           "L%05d\n%s\n", current->pid, attr->attr.name);
 170         skb_put(skb, buflen);
 171
 172         header->size = cpu_to_le16(buflen);
 173         header->vpi = cpu_to_le16(0);
 174         header->vci = cpu_to_le16(0);
 175         header->type = cpu_to_le16(PKT_COMMAND);
 176
 177         prm.pid = current->pid;
 178         prm.response = NULL;
 179         prm.port = SOLOS_CHAN(atmdev);
 180
 181         spin_lock_irq(&card->param_queue_lock);
 182         list_add(&prm.list, &card->param_queue);
 183         spin_unlock_irq(&card->param_queue_lock);
 184
 185         fpga_queue(card, prm.port, skb, NULL);
 186
 187         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 188
 189         spin_lock_irq(&card->param_queue_lock);
 190         list_del(&prm.list);
 191         spin_unlock_irq(&card->param_queue_lock);
 192
 193         if (!prm.response)
 194                 return -EIO;
 195
 196         buflen = prm.response->len;
 197         memcpy(buf, prm.response->data, buflen);
 198         kfree_skb(prm.response);
 199
 200         return buflen;
 201 }
 202
 203 static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
 204                                  const char *buf, size_t count)
 205 {
 206         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 207         struct solos_card *card = atmdev->dev_data;
 208         struct solos_param prm;
 209         struct sk_buff *skb;
 210         struct pkt_hdr *header;
 211         int buflen;
 212         ssize_t ret;
 213
 214         buflen = strlen(attr->attr.name) + 11 + count;
 215
 216         skb = alloc_skb(buflen, GFP_KERNEL);
 217         if (!skb) {
 218                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
 219                 return -ENOMEM;
 220         }
 221
 222         header = (void *)skb_put(skb, sizeof(*header));
 223
 224         buflen = snprintf((void *)&header[1], buflen - 1,
 225                           "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
 226
 227         skb_put(skb, buflen);
 228         header->size = cpu_to_le16(buflen);
 229         header->vpi = cpu_to_le16(0);
 230         header->vci = cpu_to_le16(0);
 231         header->type = cpu_to_le16(PKT_COMMAND);
 232
 233         prm.pid = current->pid;
 234         prm.response = NULL;
 235         prm.port = SOLOS_CHAN(atmdev);
 236
 237         spin_lock_irq(&card->param_queue_lock);
 238         list_add(&prm.list, &card->param_queue);
 239         spin_unlock_irq(&card->param_queue_lock);
 240
 241         fpga_queue(card, prm.port, skb, NULL);
 242
 243         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 244
 245         spin_lock_irq(&card->param_queue_lock);
 246         list_del(&prm.list);
 247         spin_unlock_irq(&card->param_queue_lock);
 248
 249         skb = prm.response;
 250
 251         if (!skb)
 252                 return -EIO;
 253
 254         buflen = skb->len;
 255
 256         /* Sometimes it has a newline, sometimes it doesn't. */
 257         if (skb->data[buflen - 1] == '\n')
 258                 buflen--;
 259
 260         if (buflen == 2 && !strncmp(skb->data, "OK", 2))
 261                 ret = count;
 262         else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
 263                 ret = -EIO;
 264         else {
 265                 /* We know we have enough space allocated for this; we allocated
 266                    it ourselves */
 267                 skb->data[buflen] = 0;
 268
 269                 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
 270                          skb->data);
 271                 ret = -EIO;
 272         }
 273         kfree_skb(skb);
 274
 275         return ret;
 276 }
 277
 278 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
 279 {
 280         struct solos_param *prm;
 281         unsigned long flags;
 282         int cmdpid;
 283         int found = 0;
 284
 285         if (skb->len < 7)
 286                 return 0;
 287
 288         if (skb->data[0] != 'L'    || !isdigit(skb->data[1]) ||
 289             !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
 290             !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
 291             skb->data[6] != '\n')
 292                 return 0;
 293
 294         cmdpid = simple_strtol(&skb->data[1], NULL, 10);
 295
 296         spin_lock_irqsave(&card->param_queue_lock, flags);
 297         list_for_each_entry(prm, &card->param_queue, list) {
 298                 if (prm->port == port && prm->pid == cmdpid) {
 299                         prm->response = skb;
 300                         skb_pull(skb, 7);
 301                         wake_up(&card->param_wq);
 302                         found = 1;
 303                         break;
 304                 }
 305         }
 306         spin_unlock_irqrestore(&card->param_queue_lock, flags);
 307         return found;
 308 }
 309
 310 static ssize_t console_show(struct device *dev, struct device_attribute *attr,
 311                             char *buf)
 312 {
 313         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 314         struct solos_card *card = atmdev->dev_data;
 315         struct sk_buff *skb;
 316
 317         spin_lock(&card->cli_queue_lock);
 318         skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
 319         spin_unlock(&card->cli_queue_lock);
 320         if(skb == NULL)
 321                 return sprintf(buf, "No data.\n");
 322
 323         memcpy(buf, skb->data, skb->len);
 324         dev_dbg(&card->dev->dev, "len: %d\n", skb->len);
 325
 326         kfree_skb(skb);
 327         return skb->len;
 328 }
 329
 330 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
 331 {
 332         struct sk_buff *skb;
 333         struct pkt_hdr *header;
 334
 335 //      dev_dbg(&card->dev->dev, "size: %d\n", size);
 336
 337         if (size > (BUF_SIZE - sizeof(*header))) {
 338                 dev_dbg(&card->dev->dev, "Command is too big.  Dropping request\n");
 339                 return 0;
 340         }
 341         skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
 342         if (!skb) {
 343                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
 344                 return 0;
 345         }
 346
 347         header = (void *)skb_put(skb, sizeof(*header));
 348
 349         header->size = cpu_to_le16(size);
 350         header->vpi = cpu_to_le16(0);
 351         header->vci = cpu_to_le16(0);
 352         header->type = cpu_to_le16(PKT_COMMAND);
 353
 354         memcpy(skb_put(skb, size), buf, size);
 355
 356         fpga_queue(card, dev, skb, NULL);
 357
 358         return 0;
 359 }
 360
 361 static ssize_t console_store(struct device *dev, struct device_attribute *attr,
 362                              const char *buf, size_t count)
 363 {
 364         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 365         struct solos_card *card = atmdev->dev_data;
 366         int err;
 367
 368         err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
 369
 370         return err?:count;
 371 }
 372
 373 static DEVICE_ATTR(console, 0644, console_show, console_store);
 374 static DEVICE_ATTR(OperationalMode, 0444, solos_param_show, NULL);
 375 static DEVICE_ATTR(AutoStart, 0644, solos_param_show, solos_param_store);
 376
 377 static int flash_upgrade(struct solos_card *card, int chip)
 378 {
 379         const struct firmware *fw;
 380         const char *fw_name;
 381         uint32_t data32 = 0;
 382         int blocksize = 0;
 383         int numblocks = 0;
 384         int offset;
 385
 386         if (chip == 0) {
 387                 fw_name = "solos-FPGA.bin";
 388                 blocksize = FPGA_BLOCK;
 389         } else {
 390                 fw_name = "solos-Firmware.bin";
 391                 blocksize = SOLOS_BLOCK;
 392         }
 393
 394         if (request_firmware(&fw, fw_name, &card->dev->dev))
 395                 return -ENOENT;
 396
 397         dev_info(&card->dev->dev, "Flash upgrade starting\n");
 398
 399         numblocks = fw->size / blocksize;
 400         dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
 401         dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
 402
 403         dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
 404         iowrite32(1, card->config_regs + FPGA_MODE);
 405         data32 = ioread32(card->config_regs + FPGA_MODE);
 406
 407         /* Set mode to Chip Erase */
 408         dev_info(&card->dev->dev, "Set FPGA Flash mode to %s Chip Erase\n",
 409                  chip?"Solos":"FPGA");
 410         iowrite32((chip * 2), card->config_regs + FLASH_MODE);
 411
 412
 413         iowrite32(1, card->config_regs + WRITE_FLASH);
 414         wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 415
 416         for (offset = 0; offset < fw->size; offset += blocksize) {
 417                 int i;
 418
 419                 /* Clear write flag */
 420                 iowrite32(0, card->config_regs + WRITE_FLASH);
 421
 422                 /* Set mode to Block Write */
 423                 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
 424                 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
 425
 426                 /* Copy block to buffer, swapping each 16 bits */
 427                 for(i = 0; i < blocksize; i += 4) {
 428                         uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i));
 429                         iowrite32(word, RX_BUF(card, 3) + i);
 430                 }
 431
 432                 /* Specify block number and then trigger flash write */
 433                 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
 434                 iowrite32(1, card->config_regs + WRITE_FLASH);
 435                 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 436         }
 437
 438         release_firmware(fw);
 439         iowrite32(0, card->config_regs + WRITE_FLASH);
 440         iowrite32(0, card->config_regs + FPGA_MODE);
 441         iowrite32(0, card->config_regs + FLASH_MODE);
 442         dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
 443         return 0;
 444 }
 445
 446 static irqreturn_t solos_irq(int irq, void *dev_id)
 447 {
 448         struct solos_card *card = dev_id;
 449         int handled = 1;
 450
 451         //ACK IRQ
 452         iowrite32(0, card->config_regs + IRQ_CLEAR);
 453         //Disable IRQs from FPGA
 454         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
 455
 456         if (card->atmdev[0])
 457                 tasklet_schedule(&card->tlet);
 458         else
 459                 wake_up(&card->fw_wq);
 460
 461         //Enable IRQs from FPGA
 462         iowrite32(1, card->config_regs + IRQ_EN_ADDR);
 463         return IRQ_RETVAL(handled);
 464 }
 465
 466 void solos_bh(unsigned long card_arg)
 467 {
 468         struct solos_card *card = (void *)card_arg;
 469         int port;
 470         uint32_t card_flags;
 471         uint32_t tx_mask;
 472         uint32_t rx_done = 0;
 473
 474         card_flags = ioread32(card->config_regs + FLAGS_ADDR);
 475
 476         /* The TX bits are set if the channel is busy; clear if not. We want to
 477            invoke fpga_tx() unless _all_ the bits for active channels are set */
 478         tx_mask = (1 << card->nr_ports) - 1;
 479         if ((card_flags & tx_mask) != tx_mask)
 480                 fpga_tx(card);
 481
 482         for (port = 0; port < card->nr_ports; port++) {
 483                 if (card_flags & (0x10 << port)) {
 484                         struct pkt_hdr header;
 485                         struct sk_buff *skb;
 486                         struct atm_vcc *vcc;
 487                         int size;
 488
 489                         rx_done |= 0x10 << port;
 490
 491                         memcpy_fromio(&header, RX_BUF(card, port), sizeof(header));
 492
 493                         size = le16_to_cpu(header.size);
 494
 495                         skb = alloc_skb(size, GFP_ATOMIC);
 496                         if (!skb) {
 497                                 if (net_ratelimit())
 498                                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
 499                                 continue;
 500                         }
 501
 502                         memcpy_fromio(skb_put(skb, size),
 503                                       RX_BUF(card, port) + sizeof(header),
 504                                       size);
 505
 506                         if (atmdebug) {
 507                                 dev_info(&card->dev->dev, "Received: device %d\n", port);
 508                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
 509                                          size, le16_to_cpu(header.vpi),
 510                                          le16_to_cpu(header.vci));
 511                                 print_buffer(skb);
 512                         }
 513
 514                         switch (le16_to_cpu(header.type)) {
 515                         case PKT_DATA:
 516                                 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header.vpi),
 517                                                le16_to_cpu(header.vci));
 518                                 if (!vcc) {
 519                                         if (net_ratelimit())
 520                                                 dev_warn(&card->dev->dev, "Received packet for unknown VCI.VPI %d.%d on port %d\n",
 521                                                          le16_to_cpu(header.vci), le16_to_cpu(header.vpi),
 522                                                          port);
 523                                         continue;
 524                                 }
 525                                 atm_charge(vcc, skb->truesize);
 526                                 vcc->push(vcc, skb);
 527                                 atomic_inc(&vcc->stats->rx);
 528                                 break;
 529
 530                         case PKT_COMMAND:
 531                         default: /* FIXME: Not really, surely? */
 532                                 if (process_command(card, port, skb))
 533                                         break;
 534                                 spin_lock(&card->cli_queue_lock);
 535                                 if (skb_queue_len(&card->cli_queue[port]) > 10) {
 536                                         if (net_ratelimit())
 537                                                 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
 538                                                          port);
 539                                 } else
 540                                         skb_queue_tail(&card->cli_queue[port], skb);
 541                                 spin_unlock(&card->cli_queue_lock);
 542                                 break;
 543                         }
 544                 }
 545         }
 546         if (rx_done)
 547                 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
 548
 549         return;
 550 }
 551
 552 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
 553 {
 554         struct hlist_head *head;
 555         struct atm_vcc *vcc = NULL;
 556         struct hlist_node *node;
 557         struct sock *s;
 558
 559         read_lock(&vcc_sklist_lock);
 560         head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 561         sk_for_each(s, node, head) {
 562                 vcc = atm_sk(s);
 563                 if (vcc->dev == dev && vcc->vci == vci &&
 564                     vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE)
 565                         goto out;
 566         }
 567         vcc = NULL;
 568  out:
 569         read_unlock(&vcc_sklist_lock);
 570         return vcc;
 571 }
 572
 573 static int list_vccs(int vci)
 574 {
 575         struct hlist_head *head;
 576         struct atm_vcc *vcc;
 577         struct hlist_node *node;
 578         struct sock *s;
 579         int num_found = 0;
 580         int i;
 581
 582         read_lock(&vcc_sklist_lock);
 583         if (vci != 0){
 584                 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 585                 sk_for_each(s, node, head) {
 586                         num_found ++;
 587                         vcc = atm_sk(s);
 588                         printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
 589                                vcc->dev->number,
 590                                vcc->vpi,
 591                                vcc->vci);
 592                 }
 593         } else {
 594                 for(i=0; i<32; i++){
 595                         head = &vcc_hash[i];
 596                         sk_for_each(s, node, head) {
 597                                 num_found ++;
 598                                 vcc = atm_sk(s);
 599                                 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
 600                                        vcc->dev->number,
 601                                        vcc->vpi,
 602                                        vcc->vci);
 603                         }
 604                 }
 605         }
 606         read_unlock(&vcc_sklist_lock);
 607         return num_found;
 608 }
 609
 610
 611 static int popen(struct atm_vcc *vcc)
 612 {
 613         struct solos_card *card = vcc->dev->dev_data;
 614         struct sk_buff *skb;
 615         struct pkt_hdr *header;
 616
 617         skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
 618         if (!skb && net_ratelimit()) {
 619                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
 620                 return -ENOMEM;
 621         }
 622         header = (void *)skb_put(skb, sizeof(*header));
 623
 624         header->size = cpu_to_le16(0);
 625         header->vpi = cpu_to_le16(vcc->vpi);
 626         header->vci = cpu_to_le16(vcc->vci);
 627         header->type = cpu_to_le16(PKT_POPEN);
 628
 629         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 630
 631 //      dev_dbg(&card->dev->dev, "Open for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev));
 632         set_bit(ATM_VF_ADDR, &vcc->flags); // accept the vpi / vci
 633         set_bit(ATM_VF_READY, &vcc->flags);
 634         list_vccs(0);
 635
 636
 637         return 0;
 638 }
 639
 640 static void pclose(struct atm_vcc *vcc)
 641 {
 642         struct solos_card *card = vcc->dev->dev_data;
 643         struct sk_buff *skb;
 644         struct pkt_hdr *header;
 645
 646         skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
 647         if (!skb) {
 648                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
 649                 return;
 650         }
 651         header = (void *)skb_put(skb, sizeof(*header));
 652
 653         header->size = cpu_to_le16(0);
 654         header->vpi = cpu_to_le16(vcc->vpi);
 655         header->vci = cpu_to_le16(vcc->vci);
 656         header->type = cpu_to_le16(PKT_PCLOSE);
 657
 658         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 659
 660 //      dev_dbg(&card->dev->dev, "Close for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev));
 661
 662         clear_bit(ATM_VF_ADDR, &vcc->flags);
 663         clear_bit(ATM_VF_READY, &vcc->flags);
 664
 665         return;
 666 }
 667
 668 static int print_buffer(struct sk_buff *buf)
 669 {
 670         int len,i;
 671         char msg[500];
 672         char item[10];
 673
 674         len = buf->len;
 675         for (i = 0; i < len; i++){
 676                 if(i % 8 == 0)
 677                         sprintf(msg, "%02X: ", i);
 678
 679                 sprintf(item,"%02X ",*(buf->data + i));
 680                 strcat(msg, item);
 681                 if(i % 8 == 7) {
 682                         sprintf(item, "\n");
 683                         strcat(msg, item);
 684                         printk(KERN_DEBUG "%s", msg);
 685                 }
 686         }
 687         if (i % 8 != 0) {
 688                 sprintf(item, "\n");
 689                 strcat(msg, item);
 690                 printk(KERN_DEBUG "%s", msg);
 691         }
 692         printk(KERN_DEBUG "\n");
 693
 694         return 0;
 695 }
 696
 697 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 698                        struct atm_vcc *vcc)
 699 {
 700         int old_len;
 701
 702         *(void **)skb->cb = vcc;
 703
 704         spin_lock(&card->tx_queue_lock);
 705         old_len = skb_queue_len(&card->tx_queue[port]);
 706         skb_queue_tail(&card->tx_queue[port], skb);
 707         spin_unlock(&card->tx_queue_lock);
 708
 709         /* If TX might need to be started, do so */
 710         if (!old_len)
 711                 fpga_tx(card);
 712 }
 713
 714 static int fpga_tx(struct solos_card *card)
 715 {
 716         uint32_t tx_pending;
 717         uint32_t tx_started = 0;
 718         struct sk_buff *skb;
 719         struct atm_vcc *vcc;
 720         unsigned char port;
 721         unsigned long flags;
 722
 723         spin_lock_irqsave(&card->tx_lock, flags);
 724
 725         tx_pending = ioread32(card->config_regs + FLAGS_ADDR);
 726
 727         dev_vdbg(&card->dev->dev, "TX Flags are %X\n", tx_pending);
 728
 729         for (port = 0; port < card->nr_ports; port++) {
 730                 if (!(tx_pending & (1 << port))) {
 731
 732                         spin_lock(&card->tx_queue_lock);
 733                         skb = skb_dequeue(&card->tx_queue[port]);
 734                         spin_unlock(&card->tx_queue_lock);
 735
 736                         if (!skb)
 737                                 continue;
 738
 739                         if (atmdebug) {
 740                                 dev_info(&card->dev->dev, "Transmitted: port %d\n",
 741                                          port);
 742                                 print_buffer(skb);
 743                         }
 744                         memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
 745
 746                         vcc = *(void **)skb->cb;
 747
 748                         if (vcc) {
 749                                 atomic_inc(&vcc->stats->tx);
 750                                 solos_pop(vcc, skb);
 751                         } else
 752                                 dev_kfree_skb_irq(skb);
 753
 754                         tx_started |= 1 << port; //Set TX full flag
 755                 }
 756         }
 757         if (tx_started)
 758                 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
 759
 760         spin_unlock_irqrestore(&card->tx_lock, flags);
 761         return 0;
 762 }
 763
 764 static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
 765 {
 766         struct solos_card *card = vcc->dev->dev_data;
 767         struct sk_buff *skb2 = NULL;
 768         struct pkt_hdr *header;
 769         int pktlen;
 770
 771         //dev_dbg(&card->dev->dev, "psend called.\n");
 772         //dev_dbg(&card->dev->dev, "dev,vpi,vci = %d,%d,%d\n",SOLOS_CHAN(vcc->dev),vcc->vpi,vcc->vci);
 773
 774         if (debug) {
 775                 skb2 = atm_alloc_charge(vcc, skb->len, GFP_ATOMIC);
 776                 if (skb2) {
 777                         memcpy(skb2->data, skb->data, skb->len);
 778                         skb_put(skb2, skb->len);
 779                         vcc->push(vcc, skb2);
 780                         atomic_inc(&vcc->stats->rx);
 781                 }
 782                 atomic_inc(&vcc->stats->tx);
 783                 solos_pop(vcc, skb);
 784                 return 0;
 785         }
 786
 787         pktlen = skb->len;
 788         if (pktlen > (BUF_SIZE - sizeof(*header))) {
 789                 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
 790                 solos_pop(vcc, skb);
 791                 return 0;
 792         }
 793
 794         if (!skb_clone_writable(skb, sizeof(*header))) {
 795                 int expand_by = 0;
 796                 int ret;
 797
 798                 if (skb_headroom(skb) < sizeof(*header))
 799                         expand_by = sizeof(*header) - skb_headroom(skb);
 800
 801                 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
 802                 if (ret) {
 803                         dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
 804                         solos_pop(vcc, skb);
 805                         return ret;
 806                 }
 807         }
 808
 809         header = (void *)skb_push(skb, sizeof(*header));
 810
 811         /* This does _not_ include the size of the header */
 812         header->size = cpu_to_le16(pktlen);
 813         header->vpi = cpu_to_le16(vcc->vpi);
 814         header->vci = cpu_to_le16(vcc->vci);
 815         header->type = cpu_to_le16(PKT_DATA);
 816
 817         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
 818
 819         return 0;
 820 }
 821
 822 static struct atmdev_ops fpga_ops = {
 823         .open =         popen,
 824         .close =        pclose,
 825         .ioctl =        NULL,
 826         .getsockopt =   NULL,
 827         .setsockopt =   NULL,
 828         .send =         psend,
 829         .send_oam =     NULL,
 830         .phy_put =      NULL,
 831         .phy_get =      NULL,
 832         .change_qos =   NULL,
 833         .proc_read =    NULL,
 834         .owner =        THIS_MODULE
 835 };
 836
 837 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
 838 {
 839         int err, i;
 840         uint16_t fpga_ver;
 841         uint8_t major_ver, minor_ver;
 842         uint32_t data32;
 843         struct solos_card *card;
 844
 845         if (debug)
 846                 return 0;
 847
 848         card = kzalloc(sizeof(*card), GFP_KERNEL);
 849         if (!card)
 850                 return -ENOMEM;
 851
 852         card->dev = dev;
 853         init_waitqueue_head(&card->fw_wq);
 854         init_waitqueue_head(&card->param_wq);
 855
 856         err = pci_enable_device(dev);
 857         if (err) {
 858                 dev_warn(&dev->dev,  "Failed to enable PCI device\n");
 859                 goto out;
 860         }
 861
 862         err = pci_request_regions(dev, "solos");
 863         if (err) {
 864                 dev_warn(&dev->dev, "Failed to request regions\n");
 865                 goto out;
 866         }
 867
 868         card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
 869         if (!card->config_regs) {
 870                 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
 871                 goto out_release_regions;
 872         }
 873         card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
 874         if (!card->buffers) {
 875                 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
 876                 goto out_unmap_config;
 877         }
 878
 879 //      for(i=0;i<64 ;i+=4){
 880 //              data32=ioread32(card->buffers + i);
 881 //              dev_dbg(&card->dev->dev, "%08lX\n",(unsigned long)data32);
 882 //      }
 883
 884         //Fill Config Mem with zeros
 885         for(i = 0; i < 128; i += 4)
 886                 iowrite32(0, card->config_regs + i);
 887
 888         //Set RX empty flags
 889         iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
 890
 891         data32 = ioread32(card->config_regs + FPGA_VER);
 892         fpga_ver = (data32 & 0x0000FFFF);
 893         major_ver = ((data32 & 0xFF000000) >> 24);
 894         minor_ver = ((data32 & 0x00FF0000) >> 16);
 895         dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
 896                  major_ver, minor_ver, fpga_ver);
 897
 898         card->nr_ports = 2; /* FIXME: Detect daughterboard */
 899
 900         pci_set_drvdata(dev, card);
 901
 902         tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
 903         spin_lock_init(&card->tx_lock);
 904         spin_lock_init(&card->tx_queue_lock);
 905         spin_lock_init(&card->cli_queue_lock);
 906         spin_lock_init(&card->param_queue_lock);
 907         INIT_LIST_HEAD(&card->param_queue);
 908
 909 /*
 910         // Set Loopback mode
 911         data32 = 0x00010000;
 912         iowrite32(data32,card->config_regs + FLAGS_ADDR);
 913 */
 914 /*
 915         // Fill Buffers with zeros
 916         for (i = 0; i < BUF_SIZE * 8; i += 4)
 917                 iowrite32(0, card->buffers + i);
 918 */
 919 /*
 920         for(i = 0; i < (BUF_SIZE * 1); i += 4)
 921                 iowrite32(0x12345678, card->buffers + i + (0*BUF_SIZE));
 922         for(i = 0; i < (BUF_SIZE * 1); i += 4)
 923                 iowrite32(0xabcdef98, card->buffers + i + (1*BUF_SIZE));
 924
 925         // Read Config Memory
 926         printk(KERN_DEBUG "Reading Config MEM\n");
 927         i = 0;
 928         for(i = 0; i < 16; i++) {
 929                 data32=ioread32(card->buffers + i*(BUF_SIZE/2));
 930                 printk(KERN_ALERT "Addr: %lX Data: %08lX\n",
 931                        (unsigned long)(addr_start + i*(BUF_SIZE/2)),
 932                        (unsigned long)data32);
 933         }
 934 */
 935         //dev_dbg(&card->dev->dev, "Requesting IRQ: %d\n",dev->irq);
 936         err = request_irq(dev->irq, solos_irq, IRQF_DISABLED|IRQF_SHARED,
 937                           "solos-pci", card);
 938         if (err) {
 939                 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
 940                 goto out_unmap_both;
 941         }
 942
 943         // Enable IRQs
 944         iowrite32(1, card->config_regs + IRQ_EN_ADDR);
 945
 946         if (fpga_upgrade)
 947                 flash_upgrade(card, 0);
 948
 949         if (firmware_upgrade)
 950                 flash_upgrade(card, 1);
 951
 952         err = atm_init(card);
 953         if (err)
 954                 goto out_free_irq;
 955
 956         return 0;
 957
 958  out_free_irq:
 959         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
 960         free_irq(dev->irq, card);
 961         tasklet_kill(&card->tlet);
 962
 963  out_unmap_both:
 964         pci_set_drvdata(dev, NULL);
 965         pci_iounmap(dev, card->config_regs);
 966  out_unmap_config:
 967         pci_iounmap(dev, card->buffers);
 968  out_release_regions:
 969         pci_release_regions(dev);
 970  out:
 971         return err;
 972 }
 973
 974 static int atm_init(struct solos_card *card)
 975 {
 976         int i;
 977
 978         for (i = 0; i < card->nr_ports; i++) {
 979                 skb_queue_head_init(&card->tx_queue[i]);
 980                 skb_queue_head_init(&card->cli_queue[i]);
 981
 982                 card->atmdev[i] = atm_dev_register("solos-pci", &fpga_ops, -1, NULL);
 983                 if (!card->atmdev[i]) {
 984                         dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
 985                         atm_remove(card);
 986                         return -ENODEV;
 987                 }
 988                 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
 989                         dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
 990                 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_OperationalMode))
 991                         dev_err(&card->dev->dev, "Could not register opmode attr for ATM device %d\n", i);
 992                 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_AutoStart))
 993                         dev_err(&card->dev->dev, "Could not register autostart attr for ATM device %d\n", i);
 994
 995                 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
 996
 997                 card->atmdev[i]->ci_range.vpi_bits = 8;
 998                 card->atmdev[i]->ci_range.vci_bits = 16;
 999                 card->atmdev[i]->dev_data = card;
1000                 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1001         }
1002         return 0;
1003 }
1004
1005 static void atm_remove(struct solos_card *card)
1006 {
1007         int i;
1008
1009         for (i = 0; i < card->nr_ports; i++) {
1010                 if (card->atmdev[i]) {
1011                         dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1012                         atm_dev_deregister(card->atmdev[i]);
1013                 }
1014         }
1015 }
1016
1017 static void fpga_remove(struct pci_dev *dev)
1018 {
1019         struct solos_card *card = pci_get_drvdata(dev);
1020
1021         if (debug)
1022                 return;
1023
1024         atm_remove(card);
1025
1026         dev_vdbg(&dev->dev, "Freeing IRQ\n");
1027         // Disable IRQs from FPGA
1028         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1029         free_irq(dev->irq, card);
1030         tasklet_kill(&card->tlet);
1031
1032         //      iowrite32(0x01,pciregs);
1033         dev_vdbg(&dev->dev, "Unmapping PCI resource\n");
1034         pci_iounmap(dev, card->buffers);
1035         pci_iounmap(dev, card->config_regs);
1036
1037         dev_vdbg(&dev->dev, "Releasing PCI Region\n");
1038         pci_release_regions(dev);
1039         pci_disable_device(dev);
1040
1041         pci_set_drvdata(dev, NULL);
1042         kfree(card);
1043 //      dev_dbg(&card->dev->dev, "fpga_remove\n");
1044         return;
1045 }
1046
1047 static struct pci_device_id fpga_pci_tbl[] __devinitdata = {
1048         { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1049         { 0, }
1050 };
1051
1052 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1053
1054 static struct pci_driver fpga_driver = {
1055         .name =         "solos",
1056         .id_table =     fpga_pci_tbl,
1057         .probe =        fpga_probe,
1058         .remove =       fpga_remove,
1059 };
1060
1061
1062 static int __init solos_pci_init(void)
1063 {
1064         printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1065         return pci_register_driver(&fpga_driver);
1066 }
1067
1068 static void __exit solos_pci_exit(void)
1069 {
1070         pci_unregister_driver(&fpga_driver);
1071         printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1072 }
1073
1074 module_init(solos_pci_init);
1075 module_exit(solos_pci_exit);