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 "1.04"
  46 #define DRIVER_VERSION 0x01
  47 #define PTAG "solos-pci"
  48
  49 #define CONFIG_RAM_SIZE 128
  50 #define FLAGS_ADDR      0x7C
  51 #define IRQ_EN_ADDR     0x78
  52 #define FPGA_VER        0x74
  53 #define IRQ_CLEAR       0x70
  54 #define WRITE_FLASH     0x6C
  55 #define PORTS           0x68
  56 #define FLASH_BLOCK     0x64
  57 #define FLASH_BUSY      0x60
  58 #define FPGA_MODE       0x5C
  59 #define FLASH_MODE      0x58
  60 #define GPIO_STATUS     0x54
  61 #define DRIVER_VER      0x50
  62 #define TX_DMA_ADDR(port)       (0x40 + (4 * (port)))
  63 #define RX_DMA_ADDR(port)       (0x30 + (4 * (port)))
  64
  65 #define DATA_RAM_SIZE   32768
  66 #define BUF_SIZE        2048
  67 #define OLD_BUF_SIZE    4096 /* For FPGA versions <= 2*/
  68 /* Old boards use ATMEL AD45DB161D flash */
  69 #define ATMEL_FPGA_PAGE 528 /* FPGA flash page size*/
  70 #define ATMEL_SOLOS_PAGE        512 /* Solos flash page size*/
  71 #define ATMEL_FPGA_BLOCK        (ATMEL_FPGA_PAGE * 8) /* FPGA block size*/
  72 #define ATMEL_SOLOS_BLOCK       (ATMEL_SOLOS_PAGE * 8) /* Solos block size*/
  73 /* Current boards use M25P/M25PE SPI flash */
  74 #define SPI_FLASH_BLOCK (256 * 64)
  75
  76 #define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
  77 #define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
  78 #define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
  79
  80 #define RX_DMA_SIZE     2048
  81
  82 #define FPGA_VERSION(a,b) (((a) << 8) + (b))
  83 #define LEGACY_BUFFERS  2
  84 #define DMA_SUPPORTED   4
  85
  86 static int reset = 0;
  87 static int atmdebug = 0;
  88 static int firmware_upgrade = 0;
  89 static int fpga_upgrade = 0;
  90 static int db_firmware_upgrade = 0;
  91 static int db_fpga_upgrade = 0;
  92
  93 struct pkt_hdr {
  94         __le16 size;
  95         __le16 vpi;
  96         __le16 vci;
  97         __le16 type;
  98 };
  99
 100 struct solos_skb_cb {
 101         struct atm_vcc *vcc;
 102         uint32_t dma_addr;
 103 };
 104
 105
 106 #define SKB_CB(skb)             ((struct solos_skb_cb *)skb->cb)
 107
 108 #define PKT_DATA        0
 109 #define PKT_COMMAND     1
 110 #define PKT_POPEN       3
 111 #define PKT_PCLOSE      4
 112 #define PKT_STATUS      5
 113
 114 struct solos_card {
 115         void __iomem *config_regs;
 116         void __iomem *buffers;
 117         int nr_ports;
 118         int tx_mask;
 119         struct pci_dev *dev;
 120         struct atm_dev *atmdev[4];
 121         struct tasklet_struct tlet;
 122         spinlock_t tx_lock;
 123         spinlock_t tx_queue_lock;
 124         spinlock_t cli_queue_lock;
 125         spinlock_t param_queue_lock;
 126         struct list_head param_queue;
 127         struct sk_buff_head tx_queue[4];
 128         struct sk_buff_head cli_queue[4];
 129         struct sk_buff *tx_skb[4];
 130         struct sk_buff *rx_skb[4];
 131         unsigned char *dma_bounce;
 132         wait_queue_head_t param_wq;
 133         wait_queue_head_t fw_wq;
 134         int using_dma;
 135         int dma_alignment;
 136         int fpga_version;
 137         int buffer_size;
 138         int atmel_flash;
 139 };
 140
 141
 142 struct solos_param {
 143         struct list_head list;
 144         pid_t pid;
 145         int port;
 146         struct sk_buff *response;
 147 };
 148
 149 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
 150
 151 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
 152 MODULE_DESCRIPTION("Solos PCI driver");
 153 MODULE_VERSION(VERSION);
 154 MODULE_LICENSE("GPL");
 155 /*(DEBLOBBED)*/
 156 MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
 157 MODULE_PARM_DESC(atmdebug, "Print ATM data");
 158 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
 159 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
 160 MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
 161 MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
 162 module_param(reset, int, 0444);
 163 module_param(atmdebug, int, 0644);
 164 module_param(firmware_upgrade, int, 0444);
 165 module_param(fpga_upgrade, int, 0444);
 166 module_param(db_firmware_upgrade, int, 0444);
 167 module_param(db_fpga_upgrade, int, 0444);
 168
 169 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 170                        struct atm_vcc *vcc);
 171 static uint32_t fpga_tx(struct solos_card *);
 172 static irqreturn_t solos_irq(int irq, void *dev_id);
 173 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
 174 static int atm_init(struct solos_card *, struct device *);
 175 static void atm_remove(struct solos_card *);
 176 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
 177 static void solos_bh(unsigned long);
 178 static int print_buffer(struct sk_buff *buf);
 179
 180 static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
 181 {
 182         if (vcc->pop)
 183                 vcc->pop(vcc, skb);
 184         else
 185                 dev_kfree_skb_any(skb);
 186 }
 187
 188 static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
 189                                 char *buf)
 190 {
 191         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 192         struct solos_card *card = atmdev->dev_data;
 193         struct solos_param prm;
 194         struct sk_buff *skb;
 195         struct pkt_hdr *header;
 196         int buflen;
 197
 198         buflen = strlen(attr->attr.name) + 10;
 199
 200         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 201         if (!skb) {
 202                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
 203                 return -ENOMEM;
 204         }
 205
 206         header = (void *)skb_put(skb, sizeof(*header));
 207
 208         buflen = snprintf((void *)&header[1], buflen - 1,
 209                           "L%05d\n%s\n", current->pid, attr->attr.name);
 210         skb_put(skb, buflen);
 211
 212         header->size = cpu_to_le16(buflen);
 213         header->vpi = cpu_to_le16(0);
 214         header->vci = cpu_to_le16(0);
 215         header->type = cpu_to_le16(PKT_COMMAND);
 216
 217         prm.pid = current->pid;
 218         prm.response = NULL;
 219         prm.port = SOLOS_CHAN(atmdev);
 220
 221         spin_lock_irq(&card->param_queue_lock);
 222         list_add(&prm.list, &card->param_queue);
 223         spin_unlock_irq(&card->param_queue_lock);
 224
 225         fpga_queue(card, prm.port, skb, NULL);
 226
 227         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 228
 229         spin_lock_irq(&card->param_queue_lock);
 230         list_del(&prm.list);
 231         spin_unlock_irq(&card->param_queue_lock);
 232
 233         if (!prm.response)
 234                 return -EIO;
 235
 236         buflen = prm.response->len;
 237         memcpy(buf, prm.response->data, buflen);
 238         kfree_skb(prm.response);
 239
 240         return buflen;
 241 }
 242
 243 static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
 244                                  const char *buf, size_t count)
 245 {
 246         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 247         struct solos_card *card = atmdev->dev_data;
 248         struct solos_param prm;
 249         struct sk_buff *skb;
 250         struct pkt_hdr *header;
 251         int buflen;
 252         ssize_t ret;
 253
 254         buflen = strlen(attr->attr.name) + 11 + count;
 255
 256         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 257         if (!skb) {
 258                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
 259                 return -ENOMEM;
 260         }
 261
 262         header = (void *)skb_put(skb, sizeof(*header));
 263
 264         buflen = snprintf((void *)&header[1], buflen - 1,
 265                           "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
 266
 267         skb_put(skb, buflen);
 268         header->size = cpu_to_le16(buflen);
 269         header->vpi = cpu_to_le16(0);
 270         header->vci = cpu_to_le16(0);
 271         header->type = cpu_to_le16(PKT_COMMAND);
 272
 273         prm.pid = current->pid;
 274         prm.response = NULL;
 275         prm.port = SOLOS_CHAN(atmdev);
 276
 277         spin_lock_irq(&card->param_queue_lock);
 278         list_add(&prm.list, &card->param_queue);
 279         spin_unlock_irq(&card->param_queue_lock);
 280
 281         fpga_queue(card, prm.port, skb, NULL);
 282
 283         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 284
 285         spin_lock_irq(&card->param_queue_lock);
 286         list_del(&prm.list);
 287         spin_unlock_irq(&card->param_queue_lock);
 288
 289         skb = prm.response;
 290
 291         if (!skb)
 292                 return -EIO;
 293
 294         buflen = skb->len;
 295
 296         /* Sometimes it has a newline, sometimes it doesn't. */
 297         if (skb->data[buflen - 1] == '\n')
 298                 buflen--;
 299
 300         if (buflen == 2 && !strncmp(skb->data, "OK", 2))
 301                 ret = count;
 302         else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
 303                 ret = -EIO;
 304         else {
 305                 /* We know we have enough space allocated for this; we allocated
 306                    it ourselves */
 307                 skb->data[buflen] = 0;
 308
 309                 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
 310                          skb->data);
 311                 ret = -EIO;
 312         }
 313         kfree_skb(skb);
 314
 315         return ret;
 316 }
 317
 318 static char *next_string(struct sk_buff *skb)
 319 {
 320         int i = 0;
 321         char *this = skb->data;
 322
 323         for (i = 0; i < skb->len; i++) {
 324                 if (this[i] == '\n') {
 325                         this[i] = 0;
 326                         skb_pull(skb, i + 1);
 327                         return this;
 328                 }
 329                 if (!isprint(this[i]))
 330                         return NULL;
 331         }
 332         return NULL;
 333 }
 334
 335 /*
 336  * Status packet has fields separated by \n, starting with a version number
 337  * for the information therein. Fields are....
 338  *
 339  *     packet version
 340  *     RxBitRate        (version >= 1)
 341  *     TxBitRate        (version >= 1)
 342  *     State            (version >= 1)
 343  *     LocalSNRMargin   (version >= 1)
 344  *     LocalLineAttn    (version >= 1)
 345  */
 346 static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
 347 {
 348         char *str, *end, *state_str, *snr, *attn;
 349         int ver, rate_up, rate_down;
 350
 351         if (!card->atmdev[port])
 352                 return -ENODEV;
 353
 354         str = next_string(skb);
 355         if (!str)
 356                 return -EIO;
 357
 358         ver = simple_strtol(str, NULL, 10);
 359         if (ver < 1) {
 360                 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
 361                          ver);
 362                 return -EIO;
 363         }
 364
 365         str = next_string(skb);
 366         if (!str)
 367                 return -EIO;
 368         if (!strcmp(str, "ERROR")) {
 369                 dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
 370                          port);
 371                 return 0;
 372         }
 373
 374         rate_down = simple_strtol(str, &end, 10);
 375         if (*end)
 376                 return -EIO;
 377
 378         str = next_string(skb);
 379         if (!str)
 380                 return -EIO;
 381         rate_up = simple_strtol(str, &end, 10);
 382         if (*end)
 383                 return -EIO;
 384
 385         state_str = next_string(skb);
 386         if (!state_str)
 387                 return -EIO;
 388
 389         /* Anything but 'Showtime' is down */
 390         if (strcmp(state_str, "Showtime")) {
 391                 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
 392                 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
 393                 return 0;
 394         }
 395
 396         snr = next_string(skb);
 397         if (!snr)
 398                 return -EIO;
 399         attn = next_string(skb);
 400         if (!attn)
 401                 return -EIO;
 402
 403         dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
 404                  port, state_str, rate_down/1000, rate_up/1000,
 405                  snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
 406
 407         card->atmdev[port]->link_rate = rate_down / 424;
 408         atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
 409
 410         return 0;
 411 }
 412
 413 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
 414 {
 415         struct solos_param *prm;
 416         unsigned long flags;
 417         int cmdpid;
 418         int found = 0;
 419
 420         if (skb->len < 7)
 421                 return 0;
 422
 423         if (skb->data[0] != 'L'    || !isdigit(skb->data[1]) ||
 424             !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
 425             !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
 426             skb->data[6] != '\n')
 427                 return 0;
 428
 429         cmdpid = simple_strtol(&skb->data[1], NULL, 10);
 430
 431         spin_lock_irqsave(&card->param_queue_lock, flags);
 432         list_for_each_entry(prm, &card->param_queue, list) {
 433                 if (prm->port == port && prm->pid == cmdpid) {
 434                         prm->response = skb;
 435                         skb_pull(skb, 7);
 436                         wake_up(&card->param_wq);
 437                         found = 1;
 438                         break;
 439                 }
 440         }
 441         spin_unlock_irqrestore(&card->param_queue_lock, flags);
 442         return found;
 443 }
 444
 445 static ssize_t console_show(struct device *dev, struct device_attribute *attr,
 446                             char *buf)
 447 {
 448         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 449         struct solos_card *card = atmdev->dev_data;
 450         struct sk_buff *skb;
 451         unsigned int len;
 452
 453         spin_lock(&card->cli_queue_lock);
 454         skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
 455         spin_unlock(&card->cli_queue_lock);
 456         if(skb == NULL)
 457                 return sprintf(buf, "No data.\n");
 458
 459         len = skb->len;
 460         memcpy(buf, skb->data, len);
 461
 462         kfree_skb(skb);
 463         return len;
 464 }
 465
 466 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
 467 {
 468         struct sk_buff *skb;
 469         struct pkt_hdr *header;
 470
 471         if (size > (BUF_SIZE - sizeof(*header))) {
 472                 dev_dbg(&card->dev->dev, "Command is too big.  Dropping request\n");
 473                 return 0;
 474         }
 475         skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
 476         if (!skb) {
 477                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
 478                 return 0;
 479         }
 480
 481         header = (void *)skb_put(skb, sizeof(*header));
 482
 483         header->size = cpu_to_le16(size);
 484         header->vpi = cpu_to_le16(0);
 485         header->vci = cpu_to_le16(0);
 486         header->type = cpu_to_le16(PKT_COMMAND);
 487
 488         memcpy(skb_put(skb, size), buf, size);
 489
 490         fpga_queue(card, dev, skb, NULL);
 491
 492         return 0;
 493 }
 494
 495 static ssize_t console_store(struct device *dev, struct device_attribute *attr,
 496                              const char *buf, size_t count)
 497 {
 498         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 499         struct solos_card *card = atmdev->dev_data;
 500         int err;
 501
 502         err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
 503
 504         return err?:count;
 505 }
 506
 507 struct geos_gpio_attr {
 508         struct device_attribute attr;
 509         int offset;
 510 };
 511
 512 #define SOLOS_GPIO_ATTR(_name, _mode, _show, _store, _offset)   \
 513         struct geos_gpio_attr gpio_attr_##_name = {             \
 514                 .attr = __ATTR(_name, _mode, _show, _store),    \
 515                 .offset = _offset }
 516
 517 static ssize_t geos_gpio_store(struct device *dev, struct device_attribute *attr,
 518                                const char *buf, size_t count)
 519 {
 520         struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
 521         struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
 522         struct solos_card *card = pci_get_drvdata(pdev);
 523         uint32_t data32;
 524
 525         if (count != 1 && (count != 2 || buf[1] != '\n'))
 526                 return -EINVAL;
 527
 528         spin_lock_irq(&card->param_queue_lock);
 529         data32 = ioread32(card->config_regs + GPIO_STATUS);
 530         if (buf[0] == '1') {
 531                 data32 |= 1 << gattr->offset;
 532                 iowrite32(data32, card->config_regs + GPIO_STATUS);
 533         } else if (buf[0] == '0') {
 534                 data32 &= ~(1 << gattr->offset);
 535                 iowrite32(data32, card->config_regs + GPIO_STATUS);
 536         } else {
 537                 count = -EINVAL;
 538         }
 539         spin_unlock_irq(&card->param_queue_lock);
 540         return count;
 541 }
 542
 543 static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr,
 544                               char *buf)
 545 {
 546         struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
 547         struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
 548         struct solos_card *card = pci_get_drvdata(pdev);
 549         uint32_t data32;
 550
 551         data32 = ioread32(card->config_regs + GPIO_STATUS);
 552         data32 = (data32 >> gattr->offset) & 1;
 553
 554         return sprintf(buf, "%d\n", data32);
 555 }
 556
 557 static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
 558                              char *buf)
 559 {
 560         struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
 561         struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
 562         struct solos_card *card = pci_get_drvdata(pdev);
 563         uint32_t data32;
 564
 565         data32 = ioread32(card->config_regs + GPIO_STATUS);
 566         switch (gattr->offset) {
 567         case 0:
 568                 /* HardwareVersion */
 569                 data32 = data32 & 0x1F;
 570                 break;
 571         case 1:
 572                 /* HardwareVariant */
 573                 data32 = (data32 >> 5) & 0x0F;
 574                 break;
 575         }
 576         return sprintf(buf, "%d\n", data32);
 577 }
 578
 579 static DEVICE_ATTR(console, 0644, console_show, console_store);
 580
 581
 582 #define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
 583 #define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
 584
 585 #include "solos-attrlist.c"
 586
 587 static SOLOS_GPIO_ATTR(GPIO1, 0644, geos_gpio_show, geos_gpio_store, 9);
 588 static SOLOS_GPIO_ATTR(GPIO2, 0644, geos_gpio_show, geos_gpio_store, 10);
 589 static SOLOS_GPIO_ATTR(GPIO3, 0644, geos_gpio_show, geos_gpio_store, 11);
 590 static SOLOS_GPIO_ATTR(GPIO4, 0644, geos_gpio_show, geos_gpio_store, 12);
 591 static SOLOS_GPIO_ATTR(GPIO5, 0644, geos_gpio_show, geos_gpio_store, 13);
 592 static SOLOS_GPIO_ATTR(PushButton, 0444, geos_gpio_show, NULL, 14);
 593 static SOLOS_GPIO_ATTR(HardwareVersion, 0444, hardware_show, NULL, 0);
 594 static SOLOS_GPIO_ATTR(HardwareVariant, 0444, hardware_show, NULL, 1);
 595 #undef SOLOS_ATTR_RO
 596 #undef SOLOS_ATTR_RW
 597
 598 #define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
 599 #define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
 600
 601 static struct attribute *solos_attrs[] = {
 602 #include "solos-attrlist.c"
 603         NULL
 604 };
 605
 606 static struct attribute_group solos_attr_group = {
 607         .attrs = solos_attrs,
 608         .name = "parameters",
 609 };
 610
 611 static struct attribute *gpio_attrs[] = {
 612         &gpio_attr_GPIO1.attr.attr,
 613         &gpio_attr_GPIO2.attr.attr,
 614         &gpio_attr_GPIO3.attr.attr,
 615         &gpio_attr_GPIO4.attr.attr,
 616         &gpio_attr_GPIO5.attr.attr,
 617         &gpio_attr_PushButton.attr.attr,
 618         &gpio_attr_HardwareVersion.attr.attr,
 619         &gpio_attr_HardwareVariant.attr.attr,
 620         NULL
 621 };
 622
 623 static struct attribute_group gpio_attr_group = {
 624         .attrs = gpio_attrs,
 625         .name = "gpio",
 626 };
 627
 628 static int flash_upgrade(struct solos_card *card, int chip)
 629 {
 630         const struct firmware *fw;
 631         const char *fw_name;
 632         int blocksize = 0;
 633         int numblocks = 0;
 634         int offset;
 635
 636         switch (chip) {
 637         case 0:
 638                 fw_name = "/*(DEBLOBBED)*/";
 639                 if (card->atmel_flash)
 640                         blocksize = ATMEL_FPGA_BLOCK;
 641                 else
 642                         blocksize = SPI_FLASH_BLOCK;
 643                 break;
 644         case 1:
 645                 fw_name = "/*(DEBLOBBED)*/";
 646                 if (card->atmel_flash)
 647                         blocksize = ATMEL_SOLOS_BLOCK;
 648                 else
 649                         blocksize = SPI_FLASH_BLOCK;
 650                 break;
 651         case 2:
 652                 if (card->fpga_version > LEGACY_BUFFERS){
 653                         fw_name = "/*(DEBLOBBED)*/";
 654                         if (card->atmel_flash)
 655                                 blocksize = ATMEL_FPGA_BLOCK;
 656                         else
 657                                 blocksize = SPI_FLASH_BLOCK;
 658                 } else {
 659                         dev_info(&card->dev->dev, "FPGA version doesn't support"
 660                                         " daughter board upgrades\n");
 661                         return -EPERM;
 662                 }
 663                 break;
 664         case 3:
 665                 if (card->fpga_version > LEGACY_BUFFERS){
 666                         fw_name = "/*(DEBLOBBED)*/";
 667                         if (card->atmel_flash)
 668                                 blocksize = ATMEL_SOLOS_BLOCK;
 669                         else
 670                                 blocksize = SPI_FLASH_BLOCK;
 671                 } else {
 672                         dev_info(&card->dev->dev, "FPGA version doesn't support"
 673                                         " daughter board upgrades\n");
 674                         return -EPERM;
 675                 }
 676                 break;
 677         default:
 678                 return -ENODEV;
 679         }
 680
 681         if (reject_firmware(&fw, fw_name, &card->dev->dev))
 682                 return -ENOENT;
 683
 684         dev_info(&card->dev->dev, "Flash upgrade starting\n");
 685
 686         /* New FPGAs require driver version before permitting flash upgrades */
 687         iowrite32(DRIVER_VERSION, card->config_regs + DRIVER_VER);
 688
 689         numblocks = fw->size / blocksize;
 690         dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
 691         dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
 692
 693         dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
 694         iowrite32(1, card->config_regs + FPGA_MODE);
 695         (void) ioread32(card->config_regs + FPGA_MODE);
 696
 697         /* Set mode to Chip Erase */
 698         if(chip == 0 || chip == 2)
 699                 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
 700         if(chip == 1 || chip == 3)
 701                 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
 702         iowrite32((chip * 2), card->config_regs + FLASH_MODE);
 703
 704
 705         iowrite32(1, card->config_regs + WRITE_FLASH);
 706         wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 707
 708         for (offset = 0; offset < fw->size; offset += blocksize) {
 709                 int i;
 710
 711                 /* Clear write flag */
 712                 iowrite32(0, card->config_regs + WRITE_FLASH);
 713
 714                 /* Set mode to Block Write */
 715                 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
 716                 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
 717
 718                 /* Copy block to buffer, swapping each 16 bits for Atmel flash */
 719                 for(i = 0; i < blocksize; i += 4) {
 720                         uint32_t word;
 721                         if (card->atmel_flash)
 722                                 word = swahb32p((uint32_t *)(fw->data + offset + i));
 723                         else
 724                                 word = *(uint32_t *)(fw->data + offset + i);
 725                         if(card->fpga_version > LEGACY_BUFFERS)
 726                                 iowrite32(word, FLASH_BUF + i);
 727                         else
 728                                 iowrite32(word, RX_BUF(card, 3) + i);
 729                 }
 730
 731                 /* Specify block number and then trigger flash write */
 732                 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
 733                 iowrite32(1, card->config_regs + WRITE_FLASH);
 734                 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 735         }
 736
 737         release_firmware(fw);
 738         iowrite32(0, card->config_regs + WRITE_FLASH);
 739         iowrite32(0, card->config_regs + FPGA_MODE);
 740         iowrite32(0, card->config_regs + FLASH_MODE);
 741         dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
 742         return 0;
 743 }
 744
 745 static irqreturn_t solos_irq(int irq, void *dev_id)
 746 {
 747         struct solos_card *card = dev_id;
 748         int handled = 1;
 749
 750         iowrite32(0, card->config_regs + IRQ_CLEAR);
 751
 752         /* If we're up and running, just kick the tasklet to process TX/RX */
 753         if (card->atmdev[0])
 754                 tasklet_schedule(&card->tlet);
 755         else
 756                 wake_up(&card->fw_wq);
 757
 758         return IRQ_RETVAL(handled);
 759 }
 760
 761 static void solos_bh(unsigned long card_arg)
 762 {
 763         struct solos_card *card = (void *)card_arg;
 764         uint32_t card_flags;
 765         uint32_t rx_done = 0;
 766         int port;
 767
 768         /*
 769          * Since fpga_tx() is going to need to read the flags under its lock,
 770          * it can return them to us so that we don't have to hit PCI MMIO
 771          * again for the same information
 772          */
 773         card_flags = fpga_tx(card);
 774
 775         for (port = 0; port < card->nr_ports; port++) {
 776                 if (card_flags & (0x10 << port)) {
 777                         struct pkt_hdr _hdr, *header;
 778                         struct sk_buff *skb;
 779                         struct atm_vcc *vcc;
 780                         int size;
 781
 782                         if (card->using_dma) {
 783                                 skb = card->rx_skb[port];
 784                                 card->rx_skb[port] = NULL;
 785
 786                                 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
 787                                                  RX_DMA_SIZE, DMA_FROM_DEVICE);
 788
 789                                 header = (void *)skb->data;
 790                                 size = le16_to_cpu(header->size);
 791                                 skb_put(skb, size + sizeof(*header));
 792                                 skb_pull(skb, sizeof(*header));
 793                         } else {
 794                                 header = &_hdr;
 795
 796                                 rx_done |= 0x10 << port;
 797
 798                                 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
 799
 800                                 size = le16_to_cpu(header->size);
 801                                 if (size > (card->buffer_size - sizeof(*header))){
 802                                         dev_warn(&card->dev->dev, "Invalid buffer size\n");
 803                                         continue;
 804                                 }
 805
 806                                 /* Use netdev_alloc_skb() because it adds NET_SKB_PAD of
 807                                  * headroom, and ensures we can route packets back out an
 808                                  * Ethernet interface (for example) without having to
 809                                  * reallocate. Adding NET_IP_ALIGN also ensures that both
 810                                  * PPPoATM and PPPoEoBR2684 packets end up aligned. */
 811                                 skb = netdev_alloc_skb_ip_align(NULL, size + 1);
 812                                 if (!skb) {
 813                                         if (net_ratelimit())
 814                                                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
 815                                         continue;
 816                                 }
 817
 818                                 memcpy_fromio(skb_put(skb, size),
 819                                               RX_BUF(card, port) + sizeof(*header),
 820                                               size);
 821                         }
 822                         if (atmdebug) {
 823                                 dev_info(&card->dev->dev, "Received: port %d\n", port);
 824                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
 825                                          size, le16_to_cpu(header->vpi),
 826                                          le16_to_cpu(header->vci));
 827                                 print_buffer(skb);
 828                         }
 829
 830                         switch (le16_to_cpu(header->type)) {
 831                         case PKT_DATA:
 832                                 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
 833                                                le16_to_cpu(header->vci));
 834                                 if (!vcc) {
 835                                         if (net_ratelimit())
 836                                                 dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
 837                                                          le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
 838                                                          port);
 839                                         dev_kfree_skb_any(skb);
 840                                         break;
 841                                 }
 842                                 atm_charge(vcc, skb->truesize);
 843                                 vcc->push(vcc, skb);
 844                                 atomic_inc(&vcc->stats->rx);
 845                                 break;
 846
 847                         case PKT_STATUS:
 848                                 if (process_status(card, port, skb) &&
 849                                     net_ratelimit()) {
 850                                         dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
 851                                         print_buffer(skb);
 852                                 }
 853                                 dev_kfree_skb_any(skb);
 854                                 break;
 855
 856                         case PKT_COMMAND:
 857                         default: /* FIXME: Not really, surely? */
 858                                 if (process_command(card, port, skb))
 859                                         break;
 860                                 spin_lock(&card->cli_queue_lock);
 861                                 if (skb_queue_len(&card->cli_queue[port]) > 10) {
 862                                         if (net_ratelimit())
 863                                                 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
 864                                                          port);
 865                                         dev_kfree_skb_any(skb);
 866                                 } else
 867                                         skb_queue_tail(&card->cli_queue[port], skb);
 868                                 spin_unlock(&card->cli_queue_lock);
 869                                 break;
 870                         }
 871                 }
 872                 /* Allocate RX skbs for any ports which need them */
 873                 if (card->using_dma && card->atmdev[port] &&
 874                     !card->rx_skb[port]) {
 875                         /* Unlike the MMIO case (qv) we can't add NET_IP_ALIGN
 876                          * here; the FPGA can only DMA to addresses which are
 877                          * aligned to 4 bytes. */
 878                         struct sk_buff *skb = dev_alloc_skb(RX_DMA_SIZE);
 879                         if (skb) {
 880                                 SKB_CB(skb)->dma_addr =
 881                                         dma_map_single(&card->dev->dev, skb->data,
 882                                                        RX_DMA_SIZE, DMA_FROM_DEVICE);
 883                                 iowrite32(SKB_CB(skb)->dma_addr,
 884                                           card->config_regs + RX_DMA_ADDR(port));
 885                                 card->rx_skb[port] = skb;
 886                         } else {
 887                                 if (net_ratelimit())
 888                                         dev_warn(&card->dev->dev, "Failed to allocate RX skb");
 889
 890                                 /* We'll have to try again later */
 891                                 tasklet_schedule(&card->tlet);
 892                         }
 893                 }
 894         }
 895         if (rx_done)
 896                 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
 897
 898         return;
 899 }
 900
 901 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
 902 {
 903         struct hlist_head *head;
 904         struct atm_vcc *vcc = NULL;
 905         struct sock *s;
 906
 907         read_lock(&vcc_sklist_lock);
 908         head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 909         sk_for_each(s, head) {
 910                 vcc = atm_sk(s);
 911                 if (vcc->dev == dev && vcc->vci == vci &&
 912                     vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
 913                     test_bit(ATM_VF_READY, &vcc->flags))
 914                         goto out;
 915         }
 916         vcc = NULL;
 917  out:
 918         read_unlock(&vcc_sklist_lock);
 919         return vcc;
 920 }
 921
 922 static int popen(struct atm_vcc *vcc)
 923 {
 924         struct solos_card *card = vcc->dev->dev_data;
 925         struct sk_buff *skb;
 926         struct pkt_hdr *header;
 927
 928         if (vcc->qos.aal != ATM_AAL5) {
 929                 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
 930                          vcc->qos.aal);
 931                 return -EINVAL;
 932         }
 933
 934         skb = alloc_skb(sizeof(*header), GFP_KERNEL);
 935         if (!skb) {
 936                 if (net_ratelimit())
 937                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
 938                 return -ENOMEM;
 939         }
 940         header = (void *)skb_put(skb, sizeof(*header));
 941
 942         header->size = cpu_to_le16(0);
 943         header->vpi = cpu_to_le16(vcc->vpi);
 944         header->vci = cpu_to_le16(vcc->vci);
 945         header->type = cpu_to_le16(PKT_POPEN);
 946
 947         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 948
 949         set_bit(ATM_VF_ADDR, &vcc->flags);
 950         set_bit(ATM_VF_READY, &vcc->flags);
 951
 952         return 0;
 953 }
 954
 955 static void pclose(struct atm_vcc *vcc)
 956 {
 957         struct solos_card *card = vcc->dev->dev_data;
 958         unsigned char port = SOLOS_CHAN(vcc->dev);
 959         struct sk_buff *skb, *tmpskb;
 960         struct pkt_hdr *header;
 961
 962         /* Remove any yet-to-be-transmitted packets from the pending queue */
 963         spin_lock(&card->tx_queue_lock);
 964         skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {
 965                 if (SKB_CB(skb)->vcc == vcc) {
 966                         skb_unlink(skb, &card->tx_queue[port]);
 967                         solos_pop(vcc, skb);
 968                 }
 969         }
 970         spin_unlock(&card->tx_queue_lock);
 971
 972         skb = alloc_skb(sizeof(*header), GFP_KERNEL);
 973         if (!skb) {
 974                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
 975                 return;
 976         }
 977         header = (void *)skb_put(skb, sizeof(*header));
 978
 979         header->size = cpu_to_le16(0);
 980         header->vpi = cpu_to_le16(vcc->vpi);
 981         header->vci = cpu_to_le16(vcc->vci);
 982         header->type = cpu_to_le16(PKT_PCLOSE);
 983
 984         skb_get(skb);
 985         fpga_queue(card, port, skb, NULL);
 986
 987         if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))
 988                 dev_warn(&card->dev->dev,
 989                          "Timeout waiting for VCC close on port %d\n", port);
 990
 991         dev_kfree_skb(skb);
 992
 993         /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
 994            tasklet has finished processing any incoming packets (and, more to
 995            the point, using the vcc pointer). */
 996         tasklet_unlock_wait(&card->tlet);
 997
 998         clear_bit(ATM_VF_ADDR, &vcc->flags);
 999
1000         return;
1001 }
1002
1003 static int print_buffer(struct sk_buff *buf)
1004 {
1005         int len,i;
1006         char msg[500];
1007         char item[10];
1008
1009         len = buf->len;
1010         for (i = 0; i < len; i++){
1011                 if(i % 8 == 0)
1012                         sprintf(msg, "%02X: ", i);
1013
1014                 sprintf(item,"%02X ",*(buf->data + i));
1015                 strcat(msg, item);
1016                 if(i % 8 == 7) {
1017                         sprintf(item, "\n");
1018                         strcat(msg, item);
1019                         printk(KERN_DEBUG "%s", msg);
1020                 }
1021         }
1022         if (i % 8 != 0) {
1023                 sprintf(item, "\n");
1024                 strcat(msg, item);
1025                 printk(KERN_DEBUG "%s", msg);
1026         }
1027         printk(KERN_DEBUG "\n");
1028
1029         return 0;
1030 }
1031
1032 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
1033                        struct atm_vcc *vcc)
1034 {
1035         int old_len;
1036         unsigned long flags;
1037
1038         SKB_CB(skb)->vcc = vcc;
1039
1040         spin_lock_irqsave(&card->tx_queue_lock, flags);
1041         old_len = skb_queue_len(&card->tx_queue[port]);
1042         skb_queue_tail(&card->tx_queue[port], skb);
1043         if (!old_len)
1044                 card->tx_mask |= (1 << port);
1045         spin_unlock_irqrestore(&card->tx_queue_lock, flags);
1046
1047         /* Theoretically we could just schedule the tasklet here, but
1048            that introduces latency we don't want -- it's noticeable */
1049         if (!old_len)
1050                 fpga_tx(card);
1051 }
1052
1053 static uint32_t fpga_tx(struct solos_card *card)
1054 {
1055         uint32_t tx_pending, card_flags;
1056         uint32_t tx_started = 0;
1057         struct sk_buff *skb;
1058         struct atm_vcc *vcc;
1059         unsigned char port;
1060         unsigned long flags;
1061
1062         spin_lock_irqsave(&card->tx_lock, flags);
1063
1064         card_flags = ioread32(card->config_regs + FLAGS_ADDR);
1065         /*
1066          * The queue lock is required for _writing_ to tx_mask, but we're
1067          * OK to read it here without locking. The only potential update
1068          * that we could race with is in fpga_queue() where it sets a bit
1069          * for a new port... but it's going to call this function again if
1070          * it's doing that, anyway.
1071          */
1072         tx_pending = card->tx_mask & ~card_flags;
1073
1074         for (port = 0; tx_pending; tx_pending >>= 1, port++) {
1075                 if (tx_pending & 1) {
1076                         struct sk_buff *oldskb = card->tx_skb[port];
1077                         if (oldskb) {
1078                                 dma_unmap_single(&card->dev->dev, SKB_CB(oldskb)->dma_addr,
1079                                                  oldskb->len, DMA_TO_DEVICE);
1080                                 card->tx_skb[port] = NULL;
1081                         }
1082                         spin_lock(&card->tx_queue_lock);
1083                         skb = skb_dequeue(&card->tx_queue[port]);
1084                         if (!skb)
1085                                 card->tx_mask &= ~(1 << port);
1086                         spin_unlock(&card->tx_queue_lock);
1087
1088                         if (skb && !card->using_dma) {
1089                                 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
1090                                 tx_started |= 1 << port;
1091                                 oldskb = skb; /* We're done with this skb already */
1092                         } else if (skb && card->using_dma) {
1093                                 unsigned char *data = skb->data;
1094                                 if ((unsigned long)data & card->dma_alignment) {
1095                                         data = card->dma_bounce + (BUF_SIZE * port);
1096                                         memcpy(data, skb->data, skb->len);
1097                                 }
1098                                 SKB_CB(skb)->dma_addr = dma_map_single(&card->dev->dev, data,
1099                                                                        skb->len, DMA_TO_DEVICE);
1100                                 card->tx_skb[port] = skb;
1101                                 iowrite32(SKB_CB(skb)->dma_addr,
1102                                           card->config_regs + TX_DMA_ADDR(port));
1103                         }
1104
1105                         if (!oldskb)
1106                                 continue;
1107
1108                         /* Clean up and free oldskb now it's gone */
1109                         if (atmdebug) {
1110                                 struct pkt_hdr *header = (void *)oldskb->data;
1111                                 int size = le16_to_cpu(header->size);
1112
1113                                 skb_pull(oldskb, sizeof(*header));
1114                                 dev_info(&card->dev->dev, "Transmitted: port %d\n",
1115                                          port);
1116                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
1117                                          size, le16_to_cpu(header->vpi),
1118                                          le16_to_cpu(header->vci));
1119                                 print_buffer(oldskb);
1120                         }
1121
1122                         vcc = SKB_CB(oldskb)->vcc;
1123
1124                         if (vcc) {
1125                                 atomic_inc(&vcc->stats->tx);
1126                                 solos_pop(vcc, oldskb);
1127                         } else {
1128                                 dev_kfree_skb_irq(oldskb);
1129                                 wake_up(&card->param_wq);
1130                         }
1131                 }
1132         }
1133         /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
1134         if (tx_started)
1135                 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1136
1137         spin_unlock_irqrestore(&card->tx_lock, flags);
1138         return card_flags;
1139 }
1140
1141 static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1142 {
1143         struct solos_card *card = vcc->dev->dev_data;
1144         struct pkt_hdr *header;
1145         int pktlen;
1146
1147         pktlen = skb->len;
1148         if (pktlen > (BUF_SIZE - sizeof(*header))) {
1149                 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1150                 solos_pop(vcc, skb);
1151                 return 0;
1152         }
1153
1154         if (!skb_clone_writable(skb, sizeof(*header))) {
1155                 int expand_by = 0;
1156                 int ret;
1157
1158                 if (skb_headroom(skb) < sizeof(*header))
1159                         expand_by = sizeof(*header) - skb_headroom(skb);
1160
1161                 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1162                 if (ret) {
1163                         dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1164                         solos_pop(vcc, skb);
1165                         return ret;
1166                 }
1167         }
1168
1169         header = (void *)skb_push(skb, sizeof(*header));
1170
1171         /* This does _not_ include the size of the header */
1172         header->size = cpu_to_le16(pktlen);
1173         header->vpi = cpu_to_le16(vcc->vpi);
1174         header->vci = cpu_to_le16(vcc->vci);
1175         header->type = cpu_to_le16(PKT_DATA);
1176
1177         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1178
1179         return 0;
1180 }
1181
1182 static struct atmdev_ops fpga_ops = {
1183         .open =         popen,
1184         .close =        pclose,
1185         .ioctl =        NULL,
1186         .getsockopt =   NULL,
1187         .setsockopt =   NULL,
1188         .send =         psend,
1189         .send_oam =     NULL,
1190         .phy_put =      NULL,
1191         .phy_get =      NULL,
1192         .change_qos =   NULL,
1193         .proc_read =    NULL,
1194         .owner =        THIS_MODULE
1195 };
1196
1197 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1198 {
1199         int err;
1200         uint16_t fpga_ver;
1201         uint8_t major_ver, minor_ver;
1202         uint32_t data32;
1203         struct solos_card *card;
1204
1205         card = kzalloc(sizeof(*card), GFP_KERNEL);
1206         if (!card)
1207                 return -ENOMEM;
1208
1209         card->dev = dev;
1210         init_waitqueue_head(&card->fw_wq);
1211         init_waitqueue_head(&card->param_wq);
1212
1213         err = pci_enable_device(dev);
1214         if (err) {
1215                 dev_warn(&dev->dev,  "Failed to enable PCI device\n");
1216                 goto out;
1217         }
1218
1219         err = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
1220         if (err) {
1221                 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1222                 goto out;
1223         }
1224
1225         err = pci_request_regions(dev, "solos");
1226         if (err) {
1227                 dev_warn(&dev->dev, "Failed to request regions\n");
1228                 goto out;
1229         }
1230
1231         card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1232         if (!card->config_regs) {
1233                 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1234                 err = -ENOMEM;
1235                 goto out_release_regions;
1236         }
1237         card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1238         if (!card->buffers) {
1239                 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1240                 err = -ENOMEM;
1241                 goto out_unmap_config;
1242         }
1243
1244         if (reset) {
1245                 iowrite32(1, card->config_regs + FPGA_MODE);
1246                 data32 = ioread32(card->config_regs + FPGA_MODE);
1247
1248                 iowrite32(0, card->config_regs + FPGA_MODE);
1249                 data32 = ioread32(card->config_regs + FPGA_MODE);
1250         }
1251
1252         data32 = ioread32(card->config_regs + FPGA_VER);
1253         fpga_ver = (data32 & 0x0000FFFF);
1254         major_ver = ((data32 & 0xFF000000) >> 24);
1255         minor_ver = ((data32 & 0x00FF0000) >> 16);
1256         card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1257         if (card->fpga_version > LEGACY_BUFFERS)
1258                 card->buffer_size = BUF_SIZE;
1259         else
1260                 card->buffer_size = OLD_BUF_SIZE;
1261         dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1262                  major_ver, minor_ver, fpga_ver);
1263
1264         if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade ||
1265                               db_fpga_upgrade || db_firmware_upgrade)) {
1266                 dev_warn(&dev->dev,
1267                          "FPGA too old; cannot upgrade flash. Use JTAG.\n");
1268                 fpga_upgrade = firmware_upgrade = 0;
1269                 db_fpga_upgrade = db_firmware_upgrade = 0;
1270         }
1271
1272         /* Stopped using Atmel flash after 0.03-38 */
1273         if (fpga_ver < 39)
1274                 card->atmel_flash = 1;
1275         else
1276                 card->atmel_flash = 0;
1277
1278         data32 = ioread32(card->config_regs + PORTS);
1279         card->nr_ports = (data32 & 0x000000FF);
1280
1281         if (card->fpga_version >= DMA_SUPPORTED) {
1282                 pci_set_master(dev);
1283                 card->using_dma = 1;
1284                 if (1) { /* All known FPGA versions so far */
1285                         card->dma_alignment = 3;
1286                         card->dma_bounce = kmalloc(card->nr_ports * BUF_SIZE, GFP_KERNEL);
1287                         if (!card->dma_bounce) {
1288                                 dev_warn(&card->dev->dev, "Failed to allocate DMA bounce buffers\n");
1289                                 err = -ENOMEM;
1290                                 /* Fallback to MMIO doesn't work */
1291                                 goto out_unmap_both;
1292                         }
1293                 }
1294         } else {
1295                 card->using_dma = 0;
1296                 /* Set RX empty flag for all ports */
1297                 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1298         }
1299
1300         pci_set_drvdata(dev, card);
1301
1302         tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1303         spin_lock_init(&card->tx_lock);
1304         spin_lock_init(&card->tx_queue_lock);
1305         spin_lock_init(&card->cli_queue_lock);
1306         spin_lock_init(&card->param_queue_lock);
1307         INIT_LIST_HEAD(&card->param_queue);
1308
1309         err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1310                           "solos-pci", card);
1311         if (err) {
1312                 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1313                 goto out_unmap_both;
1314         }
1315
1316         iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1317
1318         if (fpga_upgrade)
1319                 flash_upgrade(card, 0);
1320
1321         if (firmware_upgrade)
1322                 flash_upgrade(card, 1);
1323
1324         if (db_fpga_upgrade)
1325                 flash_upgrade(card, 2);
1326
1327         if (db_firmware_upgrade)
1328                 flash_upgrade(card, 3);
1329
1330         err = atm_init(card, &dev->dev);
1331         if (err)
1332                 goto out_free_irq;
1333
1334         if (card->fpga_version >= DMA_SUPPORTED &&
1335             sysfs_create_group(&card->dev->dev.kobj, &gpio_attr_group))
1336                 dev_err(&card->dev->dev, "Could not register parameter group for GPIOs\n");
1337
1338         return 0;
1339
1340  out_free_irq:
1341         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1342         free_irq(dev->irq, card);
1343         tasklet_kill(&card->tlet);
1344
1345  out_unmap_both:
1346         kfree(card->dma_bounce);
1347         pci_iounmap(dev, card->buffers);
1348  out_unmap_config:
1349         pci_iounmap(dev, card->config_regs);
1350  out_release_regions:
1351         pci_release_regions(dev);
1352  out:
1353         kfree(card);
1354         return err;
1355 }
1356
1357 static int atm_init(struct solos_card *card, struct device *parent)
1358 {
1359         int i;
1360
1361         for (i = 0; i < card->nr_ports; i++) {
1362                 struct sk_buff *skb;
1363                 struct pkt_hdr *header;
1364
1365                 skb_queue_head_init(&card->tx_queue[i]);
1366                 skb_queue_head_init(&card->cli_queue[i]);
1367
1368                 card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);
1369                 if (!card->atmdev[i]) {
1370                         dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1371                         atm_remove(card);
1372                         return -ENODEV;
1373                 }
1374                 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1375                         dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1376                 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1377                         dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1378
1379                 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1380
1381                 card->atmdev[i]->ci_range.vpi_bits = 8;
1382                 card->atmdev[i]->ci_range.vci_bits = 16;
1383                 card->atmdev[i]->dev_data = card;
1384                 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1385                 atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
1386
1387                 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
1388                 if (!skb) {
1389                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1390                         continue;
1391                 }
1392
1393                 header = (void *)skb_put(skb, sizeof(*header));
1394
1395                 header->size = cpu_to_le16(0);
1396                 header->vpi = cpu_to_le16(0);
1397                 header->vci = cpu_to_le16(0);
1398                 header->type = cpu_to_le16(PKT_STATUS);
1399
1400                 fpga_queue(card, i, skb, NULL);
1401         }
1402         return 0;
1403 }
1404
1405 static void atm_remove(struct solos_card *card)
1406 {
1407         int i;
1408
1409         for (i = 0; i < card->nr_ports; i++) {
1410                 if (card->atmdev[i]) {
1411                         struct sk_buff *skb;
1412
1413                         dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1414
1415                         sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1416                         atm_dev_deregister(card->atmdev[i]);
1417
1418                         skb = card->rx_skb[i];
1419                         if (skb) {
1420                                 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1421                                                  RX_DMA_SIZE, DMA_FROM_DEVICE);
1422                                 dev_kfree_skb(skb);
1423                         }
1424                         skb = card->tx_skb[i];
1425                         if (skb) {
1426                                 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1427                                                  skb->len, DMA_TO_DEVICE);
1428                                 dev_kfree_skb(skb);
1429                         }
1430                         while ((skb = skb_dequeue(&card->tx_queue[i])))
1431                                 dev_kfree_skb(skb);
1432
1433                 }
1434         }
1435 }
1436
1437 static void fpga_remove(struct pci_dev *dev)
1438 {
1439         struct solos_card *card = pci_get_drvdata(dev);
1440
1441         /* Disable IRQs */
1442         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1443
1444         /* Reset FPGA */
1445         iowrite32(1, card->config_regs + FPGA_MODE);
1446         (void)ioread32(card->config_regs + FPGA_MODE);
1447
1448         if (card->fpga_version >= DMA_SUPPORTED)
1449                 sysfs_remove_group(&card->dev->dev.kobj, &gpio_attr_group);
1450
1451         atm_remove(card);
1452
1453         free_irq(dev->irq, card);
1454         tasklet_kill(&card->tlet);
1455
1456         kfree(card->dma_bounce);
1457
1458         /* Release device from reset */
1459         iowrite32(0, card->config_regs + FPGA_MODE);
1460         (void)ioread32(card->config_regs + FPGA_MODE);
1461
1462         pci_iounmap(dev, card->buffers);
1463         pci_iounmap(dev, card->config_regs);
1464
1465         pci_release_regions(dev);
1466         pci_disable_device(dev);
1467
1468         kfree(card);
1469 }
1470
1471 static struct pci_device_id fpga_pci_tbl[] = {
1472         { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1473         { 0, }
1474 };
1475
1476 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1477
1478 static struct pci_driver fpga_driver = {
1479         .name =         "solos",
1480         .id_table =     fpga_pci_tbl,
1481         .probe =        fpga_probe,
1482         .remove =       fpga_remove,
1483 };
1484
1485
1486 static int __init solos_pci_init(void)
1487 {
1488         BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb));
1489
1490         printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1491         return pci_register_driver(&fpga_driver);
1492 }
1493
1494 static void __exit solos_pci_exit(void)
1495 {
1496         pci_unregister_driver(&fpga_driver);
1497         printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1498 }
1499
1500 module_init(solos_pci_init);
1501 module_exit(solos_pci_exit);