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 GPIO_STATUS     0x54
  60 #define TX_DMA_ADDR(port)       (0x40 + (4 * (port)))
  61 #define RX_DMA_ADDR(port)       (0x30 + (4 * (port)))
  62
  63 #define DATA_RAM_SIZE   32768
  64 #define BUF_SIZE        2048
  65 #define OLD_BUF_SIZE    4096 /* For FPGA versions <= 2*/
  66 #define FPGA_PAGE       528 /* FPGA flash page size*/
  67 #define SOLOS_PAGE      512 /* Solos flash page size*/
  68 #define FPGA_BLOCK      (FPGA_PAGE * 8) /* FPGA flash block size*/
  69 #define SOLOS_BLOCK     (SOLOS_PAGE * 8) /* Solos flash block size*/
  70
  71 #define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
  72 #define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
  73 #define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
  74
  75 #define RX_DMA_SIZE     2048
  76
  77 #define FPGA_VERSION(a,b) (((a) << 8) + (b))
  78 #define LEGACY_BUFFERS  2
  79 #define DMA_SUPPORTED   4
  80
  81 static int reset = 0;
  82 static int atmdebug = 0;
  83 static int firmware_upgrade = 0;
  84 static int fpga_upgrade = 0;
  85 static int db_firmware_upgrade = 0;
  86 static int db_fpga_upgrade = 0;
  87
  88 struct pkt_hdr {
  89         __le16 size;
  90         __le16 vpi;
  91         __le16 vci;
  92         __le16 type;
  93 };
  94
  95 struct solos_skb_cb {
  96         struct atm_vcc *vcc;
  97         uint32_t dma_addr;
  98 };
  99
 100
 101 #define SKB_CB(skb)             ((struct solos_skb_cb *)skb->cb)
 102
 103 #define PKT_DATA        0
 104 #define PKT_COMMAND     1
 105 #define PKT_POPEN       3
 106 #define PKT_PCLOSE      4
 107 #define PKT_STATUS      5
 108
 109 struct solos_card {
 110         void __iomem *config_regs;
 111         void __iomem *buffers;
 112         int nr_ports;
 113         int tx_mask;
 114         struct pci_dev *dev;
 115         struct atm_dev *atmdev[4];
 116         struct tasklet_struct tlet;
 117         spinlock_t tx_lock;
 118         spinlock_t tx_queue_lock;
 119         spinlock_t cli_queue_lock;
 120         spinlock_t param_queue_lock;
 121         struct list_head param_queue;
 122         struct sk_buff_head tx_queue[4];
 123         struct sk_buff_head cli_queue[4];
 124         struct sk_buff *tx_skb[4];
 125         struct sk_buff *rx_skb[4];
 126         wait_queue_head_t param_wq;
 127         wait_queue_head_t fw_wq;
 128         int using_dma;
 129         int fpga_version;
 130         int buffer_size;
 131 };
 132
 133
 134 struct solos_param {
 135         struct list_head list;
 136         pid_t pid;
 137         int port;
 138         struct sk_buff *response;
 139 };
 140
 141 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
 142
 143 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
 144 MODULE_DESCRIPTION("Solos PCI driver");
 145 MODULE_VERSION(VERSION);
 146 MODULE_LICENSE("GPL");
 147 MODULE_FIRMWARE("solos-FPGA.bin");
 148 MODULE_FIRMWARE("solos-Firmware.bin");
 149 MODULE_FIRMWARE("solos-db-FPGA.bin");
 150 MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
 151 MODULE_PARM_DESC(atmdebug, "Print ATM data");
 152 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
 153 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
 154 MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
 155 MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
 156 module_param(reset, int, 0444);
 157 module_param(atmdebug, int, 0644);
 158 module_param(firmware_upgrade, int, 0444);
 159 module_param(fpga_upgrade, int, 0444);
 160 module_param(db_firmware_upgrade, int, 0444);
 161 module_param(db_fpga_upgrade, int, 0444);
 162
 163 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 164                        struct atm_vcc *vcc);
 165 static uint32_t fpga_tx(struct solos_card *);
 166 static irqreturn_t solos_irq(int irq, void *dev_id);
 167 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
 168 static int atm_init(struct solos_card *, struct device *);
 169 static void atm_remove(struct solos_card *);
 170 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
 171 static void solos_bh(unsigned long);
 172 static int print_buffer(struct sk_buff *buf);
 173
 174 static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
 175 {
 176         if (vcc->pop)
 177                 vcc->pop(vcc, skb);
 178         else
 179                 dev_kfree_skb_any(skb);
 180 }
 181
 182 static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
 183                                 char *buf)
 184 {
 185         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 186         struct solos_card *card = atmdev->dev_data;
 187         struct solos_param prm;
 188         struct sk_buff *skb;
 189         struct pkt_hdr *header;
 190         int buflen;
 191
 192         buflen = strlen(attr->attr.name) + 10;
 193
 194         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 195         if (!skb) {
 196                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
 197                 return -ENOMEM;
 198         }
 199
 200         header = (void *)skb_put(skb, sizeof(*header));
 201
 202         buflen = snprintf((void *)&header[1], buflen - 1,
 203                           "L%05d\n%s\n", current->pid, attr->attr.name);
 204         skb_put(skb, buflen);
 205
 206         header->size = cpu_to_le16(buflen);
 207         header->vpi = cpu_to_le16(0);
 208         header->vci = cpu_to_le16(0);
 209         header->type = cpu_to_le16(PKT_COMMAND);
 210
 211         prm.pid = current->pid;
 212         prm.response = NULL;
 213         prm.port = SOLOS_CHAN(atmdev);
 214
 215         spin_lock_irq(&card->param_queue_lock);
 216         list_add(&prm.list, &card->param_queue);
 217         spin_unlock_irq(&card->param_queue_lock);
 218
 219         fpga_queue(card, prm.port, skb, NULL);
 220
 221         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 222
 223         spin_lock_irq(&card->param_queue_lock);
 224         list_del(&prm.list);
 225         spin_unlock_irq(&card->param_queue_lock);
 226
 227         if (!prm.response)
 228                 return -EIO;
 229
 230         buflen = prm.response->len;
 231         memcpy(buf, prm.response->data, buflen);
 232         kfree_skb(prm.response);
 233
 234         return buflen;
 235 }
 236
 237 static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
 238                                  const char *buf, size_t count)
 239 {
 240         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 241         struct solos_card *card = atmdev->dev_data;
 242         struct solos_param prm;
 243         struct sk_buff *skb;
 244         struct pkt_hdr *header;
 245         int buflen;
 246         ssize_t ret;
 247
 248         buflen = strlen(attr->attr.name) + 11 + count;
 249
 250         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 251         if (!skb) {
 252                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
 253                 return -ENOMEM;
 254         }
 255
 256         header = (void *)skb_put(skb, sizeof(*header));
 257
 258         buflen = snprintf((void *)&header[1], buflen - 1,
 259                           "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
 260
 261         skb_put(skb, buflen);
 262         header->size = cpu_to_le16(buflen);
 263         header->vpi = cpu_to_le16(0);
 264         header->vci = cpu_to_le16(0);
 265         header->type = cpu_to_le16(PKT_COMMAND);
 266
 267         prm.pid = current->pid;
 268         prm.response = NULL;
 269         prm.port = SOLOS_CHAN(atmdev);
 270
 271         spin_lock_irq(&card->param_queue_lock);
 272         list_add(&prm.list, &card->param_queue);
 273         spin_unlock_irq(&card->param_queue_lock);
 274
 275         fpga_queue(card, prm.port, skb, NULL);
 276
 277         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 278
 279         spin_lock_irq(&card->param_queue_lock);
 280         list_del(&prm.list);
 281         spin_unlock_irq(&card->param_queue_lock);
 282
 283         skb = prm.response;
 284
 285         if (!skb)
 286                 return -EIO;
 287
 288         buflen = skb->len;
 289
 290         /* Sometimes it has a newline, sometimes it doesn't. */
 291         if (skb->data[buflen - 1] == '\n')
 292                 buflen--;
 293
 294         if (buflen == 2 && !strncmp(skb->data, "OK", 2))
 295                 ret = count;
 296         else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
 297                 ret = -EIO;
 298         else {
 299                 /* We know we have enough space allocated for this; we allocated
 300                    it ourselves */
 301                 skb->data[buflen] = 0;
 302
 303                 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
 304                          skb->data);
 305                 ret = -EIO;
 306         }
 307         kfree_skb(skb);
 308
 309         return ret;
 310 }
 311
 312 static char *next_string(struct sk_buff *skb)
 313 {
 314         int i = 0;
 315         char *this = skb->data;
 316
 317         for (i = 0; i < skb->len; i++) {
 318                 if (this[i] == '\n') {
 319                         this[i] = 0;
 320                         skb_pull(skb, i + 1);
 321                         return this;
 322                 }
 323                 if (!isprint(this[i]))
 324                         return NULL;
 325         }
 326         return NULL;
 327 }
 328
 329 /*
 330  * Status packet has fields separated by \n, starting with a version number
 331  * for the information therein. Fields are....
 332  *
 333  *     packet version
 334  *     RxBitRate        (version >= 1)
 335  *     TxBitRate        (version >= 1)
 336  *     State            (version >= 1)
 337  *     LocalSNRMargin   (version >= 1)
 338  *     LocalLineAttn    (version >= 1)
 339  */
 340 static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
 341 {
 342         char *str, *end, *state_str, *snr, *attn;
 343         int ver, rate_up, rate_down;
 344
 345         if (!card->atmdev[port])
 346                 return -ENODEV;
 347
 348         str = next_string(skb);
 349         if (!str)
 350                 return -EIO;
 351
 352         ver = simple_strtol(str, NULL, 10);
 353         if (ver < 1) {
 354                 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
 355                          ver);
 356                 return -EIO;
 357         }
 358
 359         str = next_string(skb);
 360         if (!str)
 361                 return -EIO;
 362         if (!strcmp(str, "ERROR")) {
 363                 dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
 364                          port);
 365                 return 0;
 366         }
 367
 368         rate_down = simple_strtol(str, &end, 10);
 369         if (*end)
 370                 return -EIO;
 371
 372         str = next_string(skb);
 373         if (!str)
 374                 return -EIO;
 375         rate_up = simple_strtol(str, &end, 10);
 376         if (*end)
 377                 return -EIO;
 378
 379         state_str = next_string(skb);
 380         if (!state_str)
 381                 return -EIO;
 382
 383         /* Anything but 'Showtime' is down */
 384         if (strcmp(state_str, "Showtime")) {
 385                 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
 386                 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
 387                 return 0;
 388         }
 389
 390         snr = next_string(skb);
 391         if (!snr)
 392                 return -EIO;
 393         attn = next_string(skb);
 394         if (!attn)
 395                 return -EIO;
 396
 397         dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
 398                  port, state_str, rate_down/1000, rate_up/1000,
 399                  snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
 400
 401         card->atmdev[port]->link_rate = rate_down / 424;
 402         atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
 403
 404         return 0;
 405 }
 406
 407 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
 408 {
 409         struct solos_param *prm;
 410         unsigned long flags;
 411         int cmdpid;
 412         int found = 0;
 413
 414         if (skb->len < 7)
 415                 return 0;
 416
 417         if (skb->data[0] != 'L'    || !isdigit(skb->data[1]) ||
 418             !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
 419             !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
 420             skb->data[6] != '\n')
 421                 return 0;
 422
 423         cmdpid = simple_strtol(&skb->data[1], NULL, 10);
 424
 425         spin_lock_irqsave(&card->param_queue_lock, flags);
 426         list_for_each_entry(prm, &card->param_queue, list) {
 427                 if (prm->port == port && prm->pid == cmdpid) {
 428                         prm->response = skb;
 429                         skb_pull(skb, 7);
 430                         wake_up(&card->param_wq);
 431                         found = 1;
 432                         break;
 433                 }
 434         }
 435         spin_unlock_irqrestore(&card->param_queue_lock, flags);
 436         return found;
 437 }
 438
 439 static ssize_t console_show(struct device *dev, struct device_attribute *attr,
 440                             char *buf)
 441 {
 442         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 443         struct solos_card *card = atmdev->dev_data;
 444         struct sk_buff *skb;
 445         unsigned int len;
 446
 447         spin_lock(&card->cli_queue_lock);
 448         skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
 449         spin_unlock(&card->cli_queue_lock);
 450         if(skb == NULL)
 451                 return sprintf(buf, "No data.\n");
 452
 453         len = skb->len;
 454         memcpy(buf, skb->data, len);
 455
 456         kfree_skb(skb);
 457         return len;
 458 }
 459
 460 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
 461 {
 462         struct sk_buff *skb;
 463         struct pkt_hdr *header;
 464
 465         if (size > (BUF_SIZE - sizeof(*header))) {
 466                 dev_dbg(&card->dev->dev, "Command is too big.  Dropping request\n");
 467                 return 0;
 468         }
 469         skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
 470         if (!skb) {
 471                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
 472                 return 0;
 473         }
 474
 475         header = (void *)skb_put(skb, sizeof(*header));
 476
 477         header->size = cpu_to_le16(size);
 478         header->vpi = cpu_to_le16(0);
 479         header->vci = cpu_to_le16(0);
 480         header->type = cpu_to_le16(PKT_COMMAND);
 481
 482         memcpy(skb_put(skb, size), buf, size);
 483
 484         fpga_queue(card, dev, skb, NULL);
 485
 486         return 0;
 487 }
 488
 489 static ssize_t console_store(struct device *dev, struct device_attribute *attr,
 490                              const char *buf, size_t count)
 491 {
 492         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 493         struct solos_card *card = atmdev->dev_data;
 494         int err;
 495
 496         err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
 497
 498         return err?:count;
 499 }
 500
 501 struct geos_gpio_attr {
 502         struct device_attribute attr;
 503         int offset;
 504 };
 505
 506 #define SOLOS_GPIO_ATTR(_name, _mode, _show, _store, _offset)   \
 507         struct geos_gpio_attr gpio_attr_##_name = {             \
 508                 .attr = __ATTR(_name, _mode, _show, _store),    \
 509                 .offset = _offset }
 510
 511 static ssize_t geos_gpio_store(struct device *dev, struct device_attribute *attr,
 512                                const char *buf, size_t count)
 513 {
 514         struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
 515         struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
 516         struct solos_card *card = pci_get_drvdata(pdev);
 517         uint32_t data32;
 518
 519         if (count != 1 && (count != 2 || buf[1] != '\n'))
 520                 return -EINVAL;
 521
 522         spin_lock_irq(&card->param_queue_lock);
 523         data32 = ioread32(card->config_regs + GPIO_STATUS);
 524         if (buf[0] == '1') {
 525                 data32 |= 1 << gattr->offset;
 526                 iowrite32(data32, card->config_regs + GPIO_STATUS);
 527         } else if (buf[0] == '0') {
 528                 data32 &= ~(1 << gattr->offset);
 529                 iowrite32(data32, card->config_regs + GPIO_STATUS);
 530         } else {
 531                 count = -EINVAL;
 532         }
 533         spin_lock_irq(&card->param_queue_lock);
 534         return count;
 535 }
 536
 537 static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr,
 538                               char *buf)
 539 {
 540         struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
 541         struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
 542         struct solos_card *card = pci_get_drvdata(pdev);
 543         uint32_t data32;
 544
 545         data32 = ioread32(card->config_regs + GPIO_STATUS);
 546         data32 = (data32 >> gattr->offset) & 1;
 547
 548         return sprintf(buf, "%d\n", data32);
 549 }
 550
 551 static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
 552                              char *buf)
 553 {
 554         struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
 555         struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
 556         struct solos_card *card = pci_get_drvdata(pdev);
 557         uint32_t data32;
 558
 559         data32 = ioread32(card->config_regs + GPIO_STATUS);
 560         switch (gattr->offset) {
 561         case 0:
 562                 /* HardwareVersion */
 563                 data32 = data32 & 0x1F;
 564                 break;
 565         case 1:
 566                 /* HardwareVariant */
 567                 data32 = (data32 >> 5) & 0x0F;
 568                 break;
 569         }
 570         return sprintf(buf, "%d\n", data32);
 571 }
 572
 573 static DEVICE_ATTR(console, 0644, console_show, console_store);
 574
 575
 576 #define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
 577 #define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
 578
 579 #include "solos-attrlist.c"
 580
 581 static SOLOS_GPIO_ATTR(GPIO1, 0644, geos_gpio_show, geos_gpio_store, 9);
 582 static SOLOS_GPIO_ATTR(GPIO2, 0644, geos_gpio_show, geos_gpio_store, 10);
 583 static SOLOS_GPIO_ATTR(GPIO3, 0644, geos_gpio_show, geos_gpio_store, 11);
 584 static SOLOS_GPIO_ATTR(GPIO4, 0644, geos_gpio_show, geos_gpio_store, 12);
 585 static SOLOS_GPIO_ATTR(GPIO5, 0644, geos_gpio_show, geos_gpio_store, 13);
 586 static SOLOS_GPIO_ATTR(PushButton, 0444, geos_gpio_show, NULL, 14);
 587 static SOLOS_GPIO_ATTR(HardwareVersion, 0444, hardware_show, NULL, 0);
 588 static SOLOS_GPIO_ATTR(HardwareVariant, 0444, hardware_show, NULL, 1);
 589 #undef SOLOS_ATTR_RO
 590 #undef SOLOS_ATTR_RW
 591
 592 #define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
 593 #define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
 594
 595 static struct attribute *solos_attrs[] = {
 596 #include "solos-attrlist.c"
 597         NULL
 598 };
 599
 600 static struct attribute_group solos_attr_group = {
 601         .attrs = solos_attrs,
 602         .name = "parameters",
 603 };
 604
 605 static struct attribute *gpio_attrs[] = {
 606         &gpio_attr_GPIO1.attr.attr,
 607         &gpio_attr_GPIO2.attr.attr,
 608         &gpio_attr_GPIO3.attr.attr,
 609         &gpio_attr_GPIO4.attr.attr,
 610         &gpio_attr_GPIO5.attr.attr,
 611         &gpio_attr_PushButton.attr.attr,
 612         &gpio_attr_HardwareVersion.attr.attr,
 613         &gpio_attr_HardwareVariant.attr.attr,
 614         NULL
 615 };
 616
 617 static struct attribute_group gpio_attr_group = {
 618         .attrs = gpio_attrs,
 619         .name = "gpio",
 620 };
 621
 622 static int flash_upgrade(struct solos_card *card, int chip)
 623 {
 624         const struct firmware *fw;
 625         const char *fw_name;
 626         int blocksize = 0;
 627         int numblocks = 0;
 628         int offset;
 629
 630         switch (chip) {
 631         case 0:
 632                 fw_name = "solos-FPGA.bin";
 633                 blocksize = FPGA_BLOCK;
 634                 break;
 635         case 1:
 636                 fw_name = "solos-Firmware.bin";
 637                 blocksize = SOLOS_BLOCK;
 638                 break;
 639         case 2:
 640                 if (card->fpga_version > LEGACY_BUFFERS){
 641                         fw_name = "solos-db-FPGA.bin";
 642                         blocksize = FPGA_BLOCK;
 643                 } else {
 644                         dev_info(&card->dev->dev, "FPGA version doesn't support"
 645                                         " daughter board upgrades\n");
 646                         return -EPERM;
 647                 }
 648                 break;
 649         case 3:
 650                 if (card->fpga_version > LEGACY_BUFFERS){
 651                         fw_name = "solos-Firmware.bin";
 652                         blocksize = SOLOS_BLOCK;
 653                 } else {
 654                         dev_info(&card->dev->dev, "FPGA version doesn't support"
 655                                         " daughter board upgrades\n");
 656                         return -EPERM;
 657                 }
 658                 break;
 659         default:
 660                 return -ENODEV;
 661         }
 662
 663         if (request_firmware(&fw, fw_name, &card->dev->dev))
 664                 return -ENOENT;
 665
 666         dev_info(&card->dev->dev, "Flash upgrade starting\n");
 667
 668         numblocks = fw->size / blocksize;
 669         dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
 670         dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
 671
 672         dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
 673         iowrite32(1, card->config_regs + FPGA_MODE);
 674         (void) ioread32(card->config_regs + FPGA_MODE);
 675
 676         /* Set mode to Chip Erase */
 677         if(chip == 0 || chip == 2)
 678                 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
 679         if(chip == 1 || chip == 3)
 680                 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
 681         iowrite32((chip * 2), card->config_regs + FLASH_MODE);
 682
 683
 684         iowrite32(1, card->config_regs + WRITE_FLASH);
 685         wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 686
 687         for (offset = 0; offset < fw->size; offset += blocksize) {
 688                 int i;
 689
 690                 /* Clear write flag */
 691                 iowrite32(0, card->config_regs + WRITE_FLASH);
 692
 693                 /* Set mode to Block Write */
 694                 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
 695                 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
 696
 697                 /* Copy block to buffer, swapping each 16 bits */
 698                 for(i = 0; i < blocksize; i += 4) {
 699                         uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i));
 700                         if(card->fpga_version > LEGACY_BUFFERS)
 701                                 iowrite32(word, FLASH_BUF + i);
 702                         else
 703                                 iowrite32(word, RX_BUF(card, 3) + i);
 704                 }
 705
 706                 /* Specify block number and then trigger flash write */
 707                 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
 708                 iowrite32(1, card->config_regs + WRITE_FLASH);
 709                 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 710         }
 711
 712         release_firmware(fw);
 713         iowrite32(0, card->config_regs + WRITE_FLASH);
 714         iowrite32(0, card->config_regs + FPGA_MODE);
 715         iowrite32(0, card->config_regs + FLASH_MODE);
 716         dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
 717         return 0;
 718 }
 719
 720 static irqreturn_t solos_irq(int irq, void *dev_id)
 721 {
 722         struct solos_card *card = dev_id;
 723         int handled = 1;
 724
 725         iowrite32(0, card->config_regs + IRQ_CLEAR);
 726
 727         /* If we're up and running, just kick the tasklet to process TX/RX */
 728         if (card->atmdev[0])
 729                 tasklet_schedule(&card->tlet);
 730         else
 731                 wake_up(&card->fw_wq);
 732
 733         return IRQ_RETVAL(handled);
 734 }
 735
 736 void solos_bh(unsigned long card_arg)
 737 {
 738         struct solos_card *card = (void *)card_arg;
 739         uint32_t card_flags;
 740         uint32_t rx_done = 0;
 741         int port;
 742
 743         /*
 744          * Since fpga_tx() is going to need to read the flags under its lock,
 745          * it can return them to us so that we don't have to hit PCI MMIO
 746          * again for the same information
 747          */
 748         card_flags = fpga_tx(card);
 749
 750         for (port = 0; port < card->nr_ports; port++) {
 751                 if (card_flags & (0x10 << port)) {
 752                         struct pkt_hdr _hdr, *header;
 753                         struct sk_buff *skb;
 754                         struct atm_vcc *vcc;
 755                         int size;
 756
 757                         if (card->using_dma) {
 758                                 skb = card->rx_skb[port];
 759                                 card->rx_skb[port] = NULL;
 760
 761                                 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
 762                                                  RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
 763
 764                                 header = (void *)skb->data;
 765                                 size = le16_to_cpu(header->size);
 766                                 skb_put(skb, size + sizeof(*header));
 767                                 skb_pull(skb, sizeof(*header));
 768                         } else {
 769                                 header = &_hdr;
 770
 771                                 rx_done |= 0x10 << port;
 772
 773                                 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
 774
 775                                 size = le16_to_cpu(header->size);
 776                                 if (size > (card->buffer_size - sizeof(*header))){
 777                                         dev_warn(&card->dev->dev, "Invalid buffer size\n");
 778                                         continue;
 779                                 }
 780
 781                                 skb = alloc_skb(size + 1, GFP_ATOMIC);
 782                                 if (!skb) {
 783                                         if (net_ratelimit())
 784                                                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
 785                                         continue;
 786                                 }
 787
 788                                 memcpy_fromio(skb_put(skb, size),
 789                                               RX_BUF(card, port) + sizeof(*header),
 790                                               size);
 791                         }
 792                         if (atmdebug) {
 793                                 dev_info(&card->dev->dev, "Received: port %d\n", port);
 794                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
 795                                          size, le16_to_cpu(header->vpi),
 796                                          le16_to_cpu(header->vci));
 797                                 print_buffer(skb);
 798                         }
 799
 800                         switch (le16_to_cpu(header->type)) {
 801                         case PKT_DATA:
 802                                 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
 803                                                le16_to_cpu(header->vci));
 804                                 if (!vcc) {
 805                                         if (net_ratelimit())
 806                                                 dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
 807                                                          le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
 808                                                          port);
 809                                         dev_kfree_skb_any(skb);
 810                                         break;
 811                                 }
 812                                 atm_charge(vcc, skb->truesize);
 813                                 vcc->push(vcc, skb);
 814                                 atomic_inc(&vcc->stats->rx);
 815                                 break;
 816
 817                         case PKT_STATUS:
 818                                 if (process_status(card, port, skb) &&
 819                                     net_ratelimit()) {
 820                                         dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
 821                                         print_buffer(skb);
 822                                 }
 823                                 dev_kfree_skb_any(skb);
 824                                 break;
 825
 826                         case PKT_COMMAND:
 827                         default: /* FIXME: Not really, surely? */
 828                                 if (process_command(card, port, skb))
 829                                         break;
 830                                 spin_lock(&card->cli_queue_lock);
 831                                 if (skb_queue_len(&card->cli_queue[port]) > 10) {
 832                                         if (net_ratelimit())
 833                                                 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
 834                                                          port);
 835                                         dev_kfree_skb_any(skb);
 836                                 } else
 837                                         skb_queue_tail(&card->cli_queue[port], skb);
 838                                 spin_unlock(&card->cli_queue_lock);
 839                                 break;
 840                         }
 841                 }
 842                 /* Allocate RX skbs for any ports which need them */
 843                 if (card->using_dma && card->atmdev[port] &&
 844                     !card->rx_skb[port]) {
 845                         struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC);
 846                         if (skb) {
 847                                 SKB_CB(skb)->dma_addr =
 848                                         pci_map_single(card->dev, skb->data,
 849                                                        RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
 850                                 iowrite32(SKB_CB(skb)->dma_addr,
 851                                           card->config_regs + RX_DMA_ADDR(port));
 852                                 card->rx_skb[port] = skb;
 853                         } else {
 854                                 if (net_ratelimit())
 855                                         dev_warn(&card->dev->dev, "Failed to allocate RX skb");
 856
 857                                 /* We'll have to try again later */
 858                                 tasklet_schedule(&card->tlet);
 859                         }
 860                 }
 861         }
 862         if (rx_done)
 863                 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
 864
 865         return;
 866 }
 867
 868 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
 869 {
 870         struct hlist_head *head;
 871         struct atm_vcc *vcc = NULL;
 872         struct hlist_node *node;
 873         struct sock *s;
 874
 875         read_lock(&vcc_sklist_lock);
 876         head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 877         sk_for_each(s, node, head) {
 878                 vcc = atm_sk(s);
 879                 if (vcc->dev == dev && vcc->vci == vci &&
 880                     vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
 881                     test_bit(ATM_VF_READY, &vcc->flags))
 882                         goto out;
 883         }
 884         vcc = NULL;
 885  out:
 886         read_unlock(&vcc_sklist_lock);
 887         return vcc;
 888 }
 889
 890 static int popen(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         if (vcc->qos.aal != ATM_AAL5) {
 897                 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
 898                          vcc->qos.aal);
 899                 return -EINVAL;
 900         }
 901
 902         skb = alloc_skb(sizeof(*header), GFP_KERNEL);
 903         if (!skb) {
 904                 if (net_ratelimit())
 905                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
 906                 return -ENOMEM;
 907         }
 908         header = (void *)skb_put(skb, sizeof(*header));
 909
 910         header->size = cpu_to_le16(0);
 911         header->vpi = cpu_to_le16(vcc->vpi);
 912         header->vci = cpu_to_le16(vcc->vci);
 913         header->type = cpu_to_le16(PKT_POPEN);
 914
 915         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 916
 917         set_bit(ATM_VF_ADDR, &vcc->flags);
 918         set_bit(ATM_VF_READY, &vcc->flags);
 919
 920         return 0;
 921 }
 922
 923 static void pclose(struct atm_vcc *vcc)
 924 {
 925         struct solos_card *card = vcc->dev->dev_data;
 926         unsigned char port = SOLOS_CHAN(vcc->dev);
 927         struct sk_buff *skb, *tmpskb;
 928         struct pkt_hdr *header;
 929
 930         /* Remove any yet-to-be-transmitted packets from the pending queue */
 931         spin_lock(&card->tx_queue_lock);
 932         skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {
 933                 if (SKB_CB(skb)->vcc == vcc) {
 934                         skb_unlink(skb, &card->tx_queue[port]);
 935                         solos_pop(vcc, skb);
 936                 }
 937         }
 938         spin_unlock(&card->tx_queue_lock);
 939
 940         skb = alloc_skb(sizeof(*header), GFP_KERNEL);
 941         if (!skb) {
 942                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
 943                 return;
 944         }
 945         header = (void *)skb_put(skb, sizeof(*header));
 946
 947         header->size = cpu_to_le16(0);
 948         header->vpi = cpu_to_le16(vcc->vpi);
 949         header->vci = cpu_to_le16(vcc->vci);
 950         header->type = cpu_to_le16(PKT_PCLOSE);
 951
 952         skb_get(skb);
 953         fpga_queue(card, port, skb, NULL);
 954
 955         if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))
 956                 dev_warn(&card->dev->dev,
 957                          "Timeout waiting for VCC close on port %d\n", port);
 958
 959         dev_kfree_skb(skb);
 960
 961         /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
 962            tasklet has finished processing any incoming packets (and, more to
 963            the point, using the vcc pointer). */
 964         tasklet_unlock_wait(&card->tlet);
 965
 966         clear_bit(ATM_VF_ADDR, &vcc->flags);
 967
 968         return;
 969 }
 970
 971 static int print_buffer(struct sk_buff *buf)
 972 {
 973         int len,i;
 974         char msg[500];
 975         char item[10];
 976
 977         len = buf->len;
 978         for (i = 0; i < len; i++){
 979                 if(i % 8 == 0)
 980                         sprintf(msg, "%02X: ", i);
 981
 982                 sprintf(item,"%02X ",*(buf->data + i));
 983                 strcat(msg, item);
 984                 if(i % 8 == 7) {
 985                         sprintf(item, "\n");
 986                         strcat(msg, item);
 987                         printk(KERN_DEBUG "%s", msg);
 988                 }
 989         }
 990         if (i % 8 != 0) {
 991                 sprintf(item, "\n");
 992                 strcat(msg, item);
 993                 printk(KERN_DEBUG "%s", msg);
 994         }
 995         printk(KERN_DEBUG "\n");
 996
 997         return 0;
 998 }
 999
1000 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
1001                        struct atm_vcc *vcc)
1002 {
1003         int old_len;
1004         unsigned long flags;
1005
1006         SKB_CB(skb)->vcc = vcc;
1007
1008         spin_lock_irqsave(&card->tx_queue_lock, flags);
1009         old_len = skb_queue_len(&card->tx_queue[port]);
1010         skb_queue_tail(&card->tx_queue[port], skb);
1011         if (!old_len)
1012                 card->tx_mask |= (1 << port);
1013         spin_unlock_irqrestore(&card->tx_queue_lock, flags);
1014
1015         /* Theoretically we could just schedule the tasklet here, but
1016            that introduces latency we don't want -- it's noticeable */
1017         if (!old_len)
1018                 fpga_tx(card);
1019 }
1020
1021 static uint32_t fpga_tx(struct solos_card *card)
1022 {
1023         uint32_t tx_pending, card_flags;
1024         uint32_t tx_started = 0;
1025         struct sk_buff *skb;
1026         struct atm_vcc *vcc;
1027         unsigned char port;
1028         unsigned long flags;
1029
1030         spin_lock_irqsave(&card->tx_lock, flags);
1031
1032         card_flags = ioread32(card->config_regs + FLAGS_ADDR);
1033         /*
1034          * The queue lock is required for _writing_ to tx_mask, but we're
1035          * OK to read it here without locking. The only potential update
1036          * that we could race with is in fpga_queue() where it sets a bit
1037          * for a new port... but it's going to call this function again if
1038          * it's doing that, anyway.
1039          */
1040         tx_pending = card->tx_mask & ~card_flags;
1041
1042         for (port = 0; tx_pending; tx_pending >>= 1, port++) {
1043                 if (tx_pending & 1) {
1044                         struct sk_buff *oldskb = card->tx_skb[port];
1045                         if (oldskb) {
1046                                 pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr,
1047                                                  oldskb->len, PCI_DMA_TODEVICE);
1048                                 card->tx_skb[port] = NULL;
1049                         }
1050                         spin_lock(&card->tx_queue_lock);
1051                         skb = skb_dequeue(&card->tx_queue[port]);
1052                         if (!skb)
1053                                 card->tx_mask &= ~(1 << port);
1054                         spin_unlock(&card->tx_queue_lock);
1055
1056                         if (skb && !card->using_dma) {
1057                                 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
1058                                 tx_started |= 1 << port;
1059                                 oldskb = skb; /* We're done with this skb already */
1060                         } else if (skb && card->using_dma) {
1061                                 SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data,
1062                                                                        skb->len, PCI_DMA_TODEVICE);
1063                                 card->tx_skb[port] = skb;
1064                                 iowrite32(SKB_CB(skb)->dma_addr,
1065                                           card->config_regs + TX_DMA_ADDR(port));
1066                         }
1067
1068                         if (!oldskb)
1069                                 continue;
1070
1071                         /* Clean up and free oldskb now it's gone */
1072                         if (atmdebug) {
1073                                 struct pkt_hdr *header = (void *)oldskb->data;
1074                                 int size = le16_to_cpu(header->size);
1075
1076                                 skb_pull(oldskb, sizeof(*header));
1077                                 dev_info(&card->dev->dev, "Transmitted: port %d\n",
1078                                          port);
1079                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
1080                                          size, le16_to_cpu(header->vpi),
1081                                          le16_to_cpu(header->vci));
1082                                 print_buffer(oldskb);
1083                         }
1084
1085                         vcc = SKB_CB(oldskb)->vcc;
1086
1087                         if (vcc) {
1088                                 atomic_inc(&vcc->stats->tx);
1089                                 solos_pop(vcc, oldskb);
1090                         } else {
1091                                 dev_kfree_skb_irq(oldskb);
1092                                 wake_up(&card->param_wq);
1093                         }
1094                 }
1095         }
1096         /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
1097         if (tx_started)
1098                 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1099
1100         spin_unlock_irqrestore(&card->tx_lock, flags);
1101         return card_flags;
1102 }
1103
1104 static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1105 {
1106         struct solos_card *card = vcc->dev->dev_data;
1107         struct pkt_hdr *header;
1108         int pktlen;
1109
1110         pktlen = skb->len;
1111         if (pktlen > (BUF_SIZE - sizeof(*header))) {
1112                 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1113                 solos_pop(vcc, skb);
1114                 return 0;
1115         }
1116
1117         if (!skb_clone_writable(skb, sizeof(*header))) {
1118                 int expand_by = 0;
1119                 int ret;
1120
1121                 if (skb_headroom(skb) < sizeof(*header))
1122                         expand_by = sizeof(*header) - skb_headroom(skb);
1123
1124                 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1125                 if (ret) {
1126                         dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1127                         solos_pop(vcc, skb);
1128                         return ret;
1129                 }
1130         }
1131
1132         header = (void *)skb_push(skb, sizeof(*header));
1133
1134         /* This does _not_ include the size of the header */
1135         header->size = cpu_to_le16(pktlen);
1136         header->vpi = cpu_to_le16(vcc->vpi);
1137         header->vci = cpu_to_le16(vcc->vci);
1138         header->type = cpu_to_le16(PKT_DATA);
1139
1140         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1141
1142         return 0;
1143 }
1144
1145 static struct atmdev_ops fpga_ops = {
1146         .open =         popen,
1147         .close =        pclose,
1148         .ioctl =        NULL,
1149         .getsockopt =   NULL,
1150         .setsockopt =   NULL,
1151         .send =         psend,
1152         .send_oam =     NULL,
1153         .phy_put =      NULL,
1154         .phy_get =      NULL,
1155         .change_qos =   NULL,
1156         .proc_read =    NULL,
1157         .owner =        THIS_MODULE
1158 };
1159
1160 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1161 {
1162         int err;
1163         uint16_t fpga_ver;
1164         uint8_t major_ver, minor_ver;
1165         uint32_t data32;
1166         struct solos_card *card;
1167
1168         card = kzalloc(sizeof(*card), GFP_KERNEL);
1169         if (!card)
1170                 return -ENOMEM;
1171
1172         card->dev = dev;
1173         init_waitqueue_head(&card->fw_wq);
1174         init_waitqueue_head(&card->param_wq);
1175
1176         err = pci_enable_device(dev);
1177         if (err) {
1178                 dev_warn(&dev->dev,  "Failed to enable PCI device\n");
1179                 goto out;
1180         }
1181
1182         err = pci_set_dma_mask(dev, DMA_BIT_MASK(32));
1183         if (err) {
1184                 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1185                 goto out;
1186         }
1187
1188         err = pci_request_regions(dev, "solos");
1189         if (err) {
1190                 dev_warn(&dev->dev, "Failed to request regions\n");
1191                 goto out;
1192         }
1193
1194         card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1195         if (!card->config_regs) {
1196                 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1197                 goto out_release_regions;
1198         }
1199         card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1200         if (!card->buffers) {
1201                 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1202                 goto out_unmap_config;
1203         }
1204
1205         if (reset) {
1206                 iowrite32(1, card->config_regs + FPGA_MODE);
1207                 data32 = ioread32(card->config_regs + FPGA_MODE);
1208
1209                 iowrite32(0, card->config_regs + FPGA_MODE);
1210                 data32 = ioread32(card->config_regs + FPGA_MODE);
1211         }
1212
1213         data32 = ioread32(card->config_regs + FPGA_VER);
1214         fpga_ver = (data32 & 0x0000FFFF);
1215         major_ver = ((data32 & 0xFF000000) >> 24);
1216         minor_ver = ((data32 & 0x00FF0000) >> 16);
1217         card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1218         if (card->fpga_version > LEGACY_BUFFERS)
1219                 card->buffer_size = BUF_SIZE;
1220         else
1221                 card->buffer_size = OLD_BUF_SIZE;
1222         dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1223                  major_ver, minor_ver, fpga_ver);
1224
1225         if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade ||
1226                               db_fpga_upgrade || db_firmware_upgrade)) {
1227                 dev_warn(&dev->dev,
1228                          "FPGA too old; cannot upgrade flash. Use JTAG.\n");
1229                 fpga_upgrade = firmware_upgrade = 0;
1230                 db_fpga_upgrade = db_firmware_upgrade = 0;
1231         }
1232
1233         if (card->fpga_version >= DMA_SUPPORTED) {
1234                 pci_set_master(dev);
1235                 card->using_dma = 1;
1236         } else {
1237                 card->using_dma = 0;
1238                 /* Set RX empty flag for all ports */
1239                 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1240         }
1241
1242         data32 = ioread32(card->config_regs + PORTS);
1243         card->nr_ports = (data32 & 0x000000FF);
1244
1245         pci_set_drvdata(dev, card);
1246
1247         tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1248         spin_lock_init(&card->tx_lock);
1249         spin_lock_init(&card->tx_queue_lock);
1250         spin_lock_init(&card->cli_queue_lock);
1251         spin_lock_init(&card->param_queue_lock);
1252         INIT_LIST_HEAD(&card->param_queue);
1253
1254         err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1255                           "solos-pci", card);
1256         if (err) {
1257                 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1258                 goto out_unmap_both;
1259         }
1260
1261         iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1262
1263         if (fpga_upgrade)
1264                 flash_upgrade(card, 0);
1265
1266         if (firmware_upgrade)
1267                 flash_upgrade(card, 1);
1268
1269         if (db_fpga_upgrade)
1270                 flash_upgrade(card, 2);
1271
1272         if (db_firmware_upgrade)
1273                 flash_upgrade(card, 3);
1274
1275         err = atm_init(card, &dev->dev);
1276         if (err)
1277                 goto out_free_irq;
1278
1279         if (card->fpga_version >= DMA_SUPPORTED &&
1280             sysfs_create_group(&card->dev->dev.kobj, &gpio_attr_group))
1281                 dev_err(&card->dev->dev, "Could not register parameter group for GPIOs\n");
1282
1283         return 0;
1284
1285  out_free_irq:
1286         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1287         free_irq(dev->irq, card);
1288         tasklet_kill(&card->tlet);
1289
1290  out_unmap_both:
1291         pci_set_drvdata(dev, NULL);
1292         pci_iounmap(dev, card->buffers);
1293  out_unmap_config:
1294         pci_iounmap(dev, card->config_regs);
1295  out_release_regions:
1296         pci_release_regions(dev);
1297  out:
1298         kfree(card);
1299         return err;
1300 }
1301
1302 static int atm_init(struct solos_card *card, struct device *parent)
1303 {
1304         int i;
1305
1306         for (i = 0; i < card->nr_ports; i++) {
1307                 struct sk_buff *skb;
1308                 struct pkt_hdr *header;
1309
1310                 skb_queue_head_init(&card->tx_queue[i]);
1311                 skb_queue_head_init(&card->cli_queue[i]);
1312
1313                 card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);
1314                 if (!card->atmdev[i]) {
1315                         dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1316                         atm_remove(card);
1317                         return -ENODEV;
1318                 }
1319                 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1320                         dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1321                 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1322                         dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1323
1324                 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1325
1326                 card->atmdev[i]->ci_range.vpi_bits = 8;
1327                 card->atmdev[i]->ci_range.vci_bits = 16;
1328                 card->atmdev[i]->dev_data = card;
1329                 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1330                 atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
1331
1332                 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
1333                 if (!skb) {
1334                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1335                         continue;
1336                 }
1337
1338                 header = (void *)skb_put(skb, sizeof(*header));
1339
1340                 header->size = cpu_to_le16(0);
1341                 header->vpi = cpu_to_le16(0);
1342                 header->vci = cpu_to_le16(0);
1343                 header->type = cpu_to_le16(PKT_STATUS);
1344
1345                 fpga_queue(card, i, skb, NULL);
1346         }
1347         return 0;
1348 }
1349
1350 static void atm_remove(struct solos_card *card)
1351 {
1352         int i;
1353
1354         for (i = 0; i < card->nr_ports; i++) {
1355                 if (card->atmdev[i]) {
1356                         struct sk_buff *skb;
1357
1358                         dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1359
1360                         sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1361                         atm_dev_deregister(card->atmdev[i]);
1362
1363                         skb = card->rx_skb[i];
1364                         if (skb) {
1365                                 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1366                                                  RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
1367                                 dev_kfree_skb(skb);
1368                         }
1369                         skb = card->tx_skb[i];
1370                         if (skb) {
1371                                 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1372                                                  skb->len, PCI_DMA_TODEVICE);
1373                                 dev_kfree_skb(skb);
1374                         }
1375                         while ((skb = skb_dequeue(&card->tx_queue[i])))
1376                                 dev_kfree_skb(skb);
1377
1378                 }
1379         }
1380 }
1381
1382 static void fpga_remove(struct pci_dev *dev)
1383 {
1384         struct solos_card *card = pci_get_drvdata(dev);
1385
1386         /* Disable IRQs */
1387         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1388
1389         /* Reset FPGA */
1390         iowrite32(1, card->config_regs + FPGA_MODE);
1391         (void)ioread32(card->config_regs + FPGA_MODE);
1392
1393         if (card->fpga_version >= DMA_SUPPORTED)
1394                 sysfs_remove_group(&card->dev->dev.kobj, &gpio_attr_group);
1395
1396         atm_remove(card);
1397
1398         free_irq(dev->irq, card);
1399         tasklet_kill(&card->tlet);
1400
1401         /* Release device from reset */
1402         iowrite32(0, card->config_regs + FPGA_MODE);
1403         (void)ioread32(card->config_regs + FPGA_MODE);
1404
1405         pci_iounmap(dev, card->buffers);
1406         pci_iounmap(dev, card->config_regs);
1407
1408         pci_release_regions(dev);
1409         pci_disable_device(dev);
1410
1411         pci_set_drvdata(dev, NULL);
1412         kfree(card);
1413 }
1414
1415 static struct pci_device_id fpga_pci_tbl[] __devinitdata = {
1416         { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1417         { 0, }
1418 };
1419
1420 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1421
1422 static struct pci_driver fpga_driver = {
1423         .name =         "solos",
1424         .id_table =     fpga_pci_tbl,
1425         .probe =        fpga_probe,
1426         .remove =       fpga_remove,
1427 };
1428
1429
1430 static int __init solos_pci_init(void)
1431 {
1432         BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb));
1433
1434         printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1435         return pci_register_driver(&fpga_driver);
1436 }
1437
1438 static void __exit solos_pci_exit(void)
1439 {
1440         pci_unregister_driver(&fpga_driver);
1441         printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1442 }
1443
1444 module_init(solos_pci_init);
1445 module_exit(solos_pci_exit);