drivers/atm/solos-pci.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Driver for the Solos PCI ADSL2+ card, designed to support Linux by
   4  *  Traverse Technologies -- https://www.traverse.com.au/
   5  *  Xrio Limited          -- http://www.xrio.com/
   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
  15 #define DEBUG
  16 #define VERBOSE_DEBUG
  17
  18 #include <linux/interrupt.h>
  19 #include <linux/module.h>
  20 #include <linux/kernel.h>
  21 #include <linux/errno.h>
  22 #include <linux/ioport.h>
  23 #include <linux/types.h>
  24 #include <linux/pci.h>
  25 #include <linux/atm.h>
  26 #include <linux/atmdev.h>
  27 #include <linux/skbuff.h>
  28 #include <linux/sysfs.h>
  29 #include <linux/device.h>
  30 #include <linux/kobject.h>
  31 #include <linux/firmware.h>
  32 #include <linux/ctype.h>
  33 #include <linux/swab.h>
  34 #include <linux/slab.h>
  35
  36 #define VERSION "1.04"
  37 #define DRIVER_VERSION 0x01
  38 #define PTAG "solos-pci"
  39
  40 #define CONFIG_RAM_SIZE 128
  41 #define FLAGS_ADDR      0x7C
  42 #define IRQ_EN_ADDR     0x78
  43 #define FPGA_VER        0x74
  44 #define IRQ_CLEAR       0x70
  45 #define WRITE_FLASH     0x6C
  46 #define PORTS           0x68
  47 #define FLASH_BLOCK     0x64
  48 #define FLASH_BUSY      0x60
  49 #define FPGA_MODE       0x5C
  50 #define FLASH_MODE      0x58
  51 #define GPIO_STATUS     0x54
  52 #define DRIVER_VER      0x50
  53 #define TX_DMA_ADDR(port)       (0x40 + (4 * (port)))
  54 #define RX_DMA_ADDR(port)       (0x30 + (4 * (port)))
  55
  56 #define DATA_RAM_SIZE   32768
  57 #define BUF_SIZE        2048
  58 #define OLD_BUF_SIZE    4096 /* For FPGA versions <= 2*/
  59 /* Old boards use ATMEL AD45DB161D flash */
  60 #define ATMEL_FPGA_PAGE 528 /* FPGA flash page size*/
  61 #define ATMEL_SOLOS_PAGE        512 /* Solos flash page size*/
  62 #define ATMEL_FPGA_BLOCK        (ATMEL_FPGA_PAGE * 8) /* FPGA block size*/
  63 #define ATMEL_SOLOS_BLOCK       (ATMEL_SOLOS_PAGE * 8) /* Solos block size*/
  64 /* Current boards use M25P/M25PE SPI flash */
  65 #define SPI_FLASH_BLOCK (256 * 64)
  66
  67 #define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
  68 #define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
  69 #define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
  70
  71 #define RX_DMA_SIZE     2048
  72
  73 #define FPGA_VERSION(a,b) (((a) << 8) + (b))
  74 #define LEGACY_BUFFERS  2
  75 #define DMA_SUPPORTED   4
  76
  77 static int reset = 0;
  78 static int atmdebug = 0;
  79 static int firmware_upgrade = 0;
  80 static int fpga_upgrade = 0;
  81 static int db_firmware_upgrade = 0;
  82 static int db_fpga_upgrade = 0;
  83
  84 struct pkt_hdr {
  85         __le16 size;
  86         __le16 vpi;
  87         __le16 vci;
  88         __le16 type;
  89 };
  90
  91 struct solos_skb_cb {
  92         struct atm_vcc *vcc;
  93         uint32_t dma_addr;
  94 };
  95
  96
  97 #define SKB_CB(skb)             ((struct solos_skb_cb *)skb->cb)
  98
  99 #define PKT_DATA        0
 100 #define PKT_COMMAND     1
 101 #define PKT_POPEN       3
 102 #define PKT_PCLOSE      4
 103 #define PKT_STATUS      5
 104
 105 struct solos_card {
 106         void __iomem *config_regs;
 107         void __iomem *buffers;
 108         int nr_ports;
 109         int tx_mask;
 110         struct pci_dev *dev;
 111         struct atm_dev *atmdev[4];
 112         struct tasklet_struct tlet;
 113         spinlock_t tx_lock;
 114         spinlock_t tx_queue_lock;
 115         spinlock_t cli_queue_lock;
 116         spinlock_t param_queue_lock;
 117         struct list_head param_queue;
 118         struct sk_buff_head tx_queue[4];
 119         struct sk_buff_head cli_queue[4];
 120         struct sk_buff *tx_skb[4];
 121         struct sk_buff *rx_skb[4];
 122         unsigned char *dma_bounce;
 123         wait_queue_head_t param_wq;
 124         wait_queue_head_t fw_wq;
 125         int using_dma;
 126         int dma_alignment;
 127         int fpga_version;
 128         int buffer_size;
 129         int atmel_flash;
 130 };
 131
 132
 133 struct solos_param {
 134         struct list_head list;
 135         pid_t pid;
 136         int port;
 137         struct sk_buff *response;
 138 };
 139
 140 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
 141
 142 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
 143 MODULE_DESCRIPTION("Solos PCI driver");
 144 MODULE_VERSION(VERSION);
 145 MODULE_LICENSE("GPL");
 146 /*(DEBLOBBED)*/
 147 MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
 148 MODULE_PARM_DESC(atmdebug, "Print ATM data");
 149 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
 150 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
 151 MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
 152 MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
 153 module_param(reset, int, 0444);
 154 module_param(atmdebug, int, 0644);
 155 module_param(firmware_upgrade, int, 0444);
 156 module_param(fpga_upgrade, int, 0444);
 157 module_param(db_firmware_upgrade, int, 0444);
 158 module_param(db_fpga_upgrade, int, 0444);
 159
 160 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 161                        struct atm_vcc *vcc);
 162 static uint32_t fpga_tx(struct solos_card *);
 163 static irqreturn_t solos_irq(int irq, void *dev_id);
 164 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
 165 static int atm_init(struct solos_card *, struct device *);
 166 static void atm_remove(struct solos_card *);
 167 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
 168 static void solos_bh(unsigned long);
 169 static int print_buffer(struct sk_buff *buf);
 170
 171 static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
 172 {
 173         if (vcc->pop)
 174                 vcc->pop(vcc, skb);
 175         else
 176                 dev_kfree_skb_any(skb);
 177 }
 178
 179 static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
 180                                 char *buf)
 181 {
 182         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 183         struct solos_card *card = atmdev->dev_data;
 184         struct solos_param prm;
 185         struct sk_buff *skb;
 186         struct pkt_hdr *header;
 187         int buflen;
 188
 189         buflen = strlen(attr->attr.name) + 10;
 190
 191         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 192         if (!skb) {
 193                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
 194                 return -ENOMEM;
 195         }
 196
 197         header = skb_put(skb, sizeof(*header));
 198
 199         buflen = snprintf((void *)&header[1], buflen - 1,
 200                           "L%05d\n%s\n", current->pid, attr->attr.name);
 201         skb_put(skb, buflen);
 202
 203         header->size = cpu_to_le16(buflen);
 204         header->vpi = cpu_to_le16(0);
 205         header->vci = cpu_to_le16(0);
 206         header->type = cpu_to_le16(PKT_COMMAND);
 207
 208         prm.pid = current->pid;
 209         prm.response = NULL;
 210         prm.port = SOLOS_CHAN(atmdev);
 211
 212         spin_lock_irq(&card->param_queue_lock);
 213         list_add(&prm.list, &card->param_queue);
 214         spin_unlock_irq(&card->param_queue_lock);
 215
 216         fpga_queue(card, prm.port, skb, NULL);
 217
 218         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 219
 220         spin_lock_irq(&card->param_queue_lock);
 221         list_del(&prm.list);
 222         spin_unlock_irq(&card->param_queue_lock);
 223
 224         if (!prm.response)
 225                 return -EIO;
 226
 227         buflen = prm.response->len;
 228         memcpy(buf, prm.response->data, buflen);
 229         kfree_skb(prm.response);
 230
 231         return buflen;
 232 }
 233
 234 static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
 235                                  const char *buf, size_t count)
 236 {
 237         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 238         struct solos_card *card = atmdev->dev_data;
 239         struct solos_param prm;
 240         struct sk_buff *skb;
 241         struct pkt_hdr *header;
 242         int buflen;
 243         ssize_t ret;
 244
 245         buflen = strlen(attr->attr.name) + 11 + count;
 246
 247         skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 248         if (!skb) {
 249                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
 250                 return -ENOMEM;
 251         }
 252
 253         header = skb_put(skb, sizeof(*header));
 254
 255         buflen = snprintf((void *)&header[1], buflen - 1,
 256                           "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
 257
 258         skb_put(skb, buflen);
 259         header->size = cpu_to_le16(buflen);
 260         header->vpi = cpu_to_le16(0);
 261         header->vci = cpu_to_le16(0);
 262         header->type = cpu_to_le16(PKT_COMMAND);
 263
 264         prm.pid = current->pid;
 265         prm.response = NULL;
 266         prm.port = SOLOS_CHAN(atmdev);
 267
 268         spin_lock_irq(&card->param_queue_lock);
 269         list_add(&prm.list, &card->param_queue);
 270         spin_unlock_irq(&card->param_queue_lock);
 271
 272         fpga_queue(card, prm.port, skb, NULL);
 273
 274         wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 275
 276         spin_lock_irq(&card->param_queue_lock);
 277         list_del(&prm.list);
 278         spin_unlock_irq(&card->param_queue_lock);
 279
 280         skb = prm.response;
 281
 282         if (!skb)
 283                 return -EIO;
 284
 285         buflen = skb->len;
 286
 287         /* Sometimes it has a newline, sometimes it doesn't. */
 288         if (skb->data[buflen - 1] == '\n')
 289                 buflen--;
 290
 291         if (buflen == 2 && !strncmp(skb->data, "OK", 2))
 292                 ret = count;
 293         else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
 294                 ret = -EIO;
 295         else {
 296                 /* We know we have enough space allocated for this; we allocated
 297                    it ourselves */
 298                 skb->data[buflen] = 0;
 299
 300                 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
 301                          skb->data);
 302                 ret = -EIO;
 303         }
 304         kfree_skb(skb);
 305
 306         return ret;
 307 }
 308
 309 static char *next_string(struct sk_buff *skb)
 310 {
 311         int i = 0;
 312         char *this = skb->data;
 313
 314         for (i = 0; i < skb->len; i++) {
 315                 if (this[i] == '\n') {
 316                         this[i] = 0;
 317                         skb_pull(skb, i + 1);
 318                         return this;
 319                 }
 320                 if (!isprint(this[i]))
 321                         return NULL;
 322         }
 323         return NULL;
 324 }
 325
 326 /*
 327  * Status packet has fields separated by \n, starting with a version number
 328  * for the information therein. Fields are....
 329  *
 330  *     packet version
 331  *     RxBitRate        (version >= 1)
 332  *     TxBitRate        (version >= 1)
 333  *     State            (version >= 1)
 334  *     LocalSNRMargin   (version >= 1)
 335  *     LocalLineAttn    (version >= 1)
 336  */
 337 static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
 338 {
 339         char *str, *state_str, *snr, *attn;
 340         int ver, rate_up, rate_down, err;
 341
 342         if (!card->atmdev[port])
 343                 return -ENODEV;
 344
 345         str = next_string(skb);
 346         if (!str)
 347                 return -EIO;
 348
 349         err = kstrtoint(str, 10, &ver);
 350         if (err) {
 351                 dev_warn(&card->dev->dev, "Unexpected status interrupt version\n");
 352                 return err;
 353         }
 354         if (ver < 1) {
 355                 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
 356                          ver);
 357                 return -EIO;
 358         }
 359
 360         str = next_string(skb);
 361         if (!str)
 362                 return -EIO;
 363         if (!strcmp(str, "ERROR")) {
 364                 dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
 365                          port);
 366                 return 0;
 367         }
 368
 369         err = kstrtoint(str, 10, &rate_down);
 370         if (err)
 371                 return err;
 372
 373         str = next_string(skb);
 374         if (!str)
 375                 return -EIO;
 376         err = kstrtoint(str, 10, &rate_up);
 377         if (err)
 378                 return err;
 379
 380         state_str = next_string(skb);
 381         if (!state_str)
 382                 return -EIO;
 383
 384         /* Anything but 'Showtime' is down */
 385         if (strcmp(state_str, "Showtime")) {
 386                 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
 387                 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
 388                 return 0;
 389         }
 390
 391         snr = next_string(skb);
 392         if (!snr)
 393                 return -EIO;
 394         attn = next_string(skb);
 395         if (!attn)
 396                 return -EIO;
 397
 398         dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
 399                  port, state_str, rate_down/1000, rate_up/1000,
 400                  snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
 401
 402         card->atmdev[port]->link_rate = rate_down / 424;
 403         atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
 404
 405         return 0;
 406 }
 407
 408 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
 409 {
 410         struct solos_param *prm;
 411         unsigned long flags;
 412         int cmdpid;
 413         int found = 0, err;
 414
 415         if (skb->len < 7)
 416                 return 0;
 417
 418         if (skb->data[0] != 'L'    || !isdigit(skb->data[1]) ||
 419             !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
 420             !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
 421             skb->data[6] != '\n')
 422                 return 0;
 423
 424         err = kstrtoint(&skb->data[1], 10, &cmdpid);
 425         if (err)
 426                 return err;
 427
 428         spin_lock_irqsave(&card->param_queue_lock, flags);
 429         list_for_each_entry(prm, &card->param_queue, list) {
 430                 if (prm->port == port && prm->pid == cmdpid) {
 431                         prm->response = skb;
 432                         skb_pull(skb, 7);
 433                         wake_up(&card->param_wq);
 434                         found = 1;
 435                         break;
 436                 }
 437         }
 438         spin_unlock_irqrestore(&card->param_queue_lock, flags);
 439         return found;
 440 }
 441
 442 static ssize_t console_show(struct device *dev, struct device_attribute *attr,
 443                             char *buf)
 444 {
 445         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 446         struct solos_card *card = atmdev->dev_data;
 447         struct sk_buff *skb;
 448         unsigned int len;
 449
 450         spin_lock(&card->cli_queue_lock);
 451         skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
 452         spin_unlock(&card->cli_queue_lock);
 453         if(skb == NULL)
 454                 return sprintf(buf, "No data.\n");
 455
 456         len = skb->len;
 457         memcpy(buf, skb->data, len);
 458
 459         kfree_skb(skb);
 460         return len;
 461 }
 462
 463 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
 464 {
 465         struct sk_buff *skb;
 466         struct pkt_hdr *header;
 467
 468         if (size > (BUF_SIZE - sizeof(*header))) {
 469                 dev_dbg(&card->dev->dev, "Command is too big.  Dropping request\n");
 470                 return 0;
 471         }
 472         skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
 473         if (!skb) {
 474                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
 475                 return 0;
 476         }
 477
 478         header = skb_put(skb, sizeof(*header));
 479
 480         header->size = cpu_to_le16(size);
 481         header->vpi = cpu_to_le16(0);
 482         header->vci = cpu_to_le16(0);
 483         header->type = cpu_to_le16(PKT_COMMAND);
 484
 485         skb_put_data(skb, buf, size);
 486
 487         fpga_queue(card, dev, skb, NULL);
 488
 489         return 0;
 490 }
 491
 492 static ssize_t console_store(struct device *dev, struct device_attribute *attr,
 493                              const char *buf, size_t count)
 494 {
 495         struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 496         struct solos_card *card = atmdev->dev_data;
 497         int err;
 498
 499         err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
 500
 501         return err?:count;
 502 }
 503
 504 struct geos_gpio_attr {
 505         struct device_attribute attr;
 506         int offset;
 507 };
 508
 509 #define SOLOS_GPIO_ATTR(_name, _mode, _show, _store, _offset)   \
 510         struct geos_gpio_attr gpio_attr_##_name = {             \
 511                 .attr = __ATTR(_name, _mode, _show, _store),    \
 512                 .offset = _offset }
 513
 514 static ssize_t geos_gpio_store(struct device *dev, struct device_attribute *attr,
 515                                const char *buf, size_t count)
 516 {
 517         struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
 518         struct solos_card *card = dev_get_drvdata(dev);
 519         uint32_t data32;
 520
 521         if (count != 1 && (count != 2 || buf[1] != '\n'))
 522                 return -EINVAL;
 523
 524         spin_lock_irq(&card->param_queue_lock);
 525         data32 = ioread32(card->config_regs + GPIO_STATUS);
 526         if (buf[0] == '1') {
 527                 data32 |= 1 << gattr->offset;
 528                 iowrite32(data32, card->config_regs + GPIO_STATUS);
 529         } else if (buf[0] == '0') {
 530                 data32 &= ~(1 << gattr->offset);
 531                 iowrite32(data32, card->config_regs + GPIO_STATUS);
 532         } else {
 533                 count = -EINVAL;
 534         }
 535         spin_unlock_irq(&card->param_queue_lock);
 536         return count;
 537 }
 538
 539 static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr,
 540                               char *buf)
 541 {
 542         struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
 543         struct solos_card *card = dev_get_drvdata(dev);
 544         uint32_t data32;
 545
 546         data32 = ioread32(card->config_regs + GPIO_STATUS);
 547         data32 = (data32 >> gattr->offset) & 1;
 548
 549         return sprintf(buf, "%d\n", data32);
 550 }
 551
 552 static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
 553                              char *buf)
 554 {
 555         struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
 556         struct solos_card *card = dev_get_drvdata(dev);
 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_RW(console);
 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 const 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 const 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 = "/*(DEBLOBBED)*/";
 633                 if (card->atmel_flash)
 634                         blocksize = ATMEL_FPGA_BLOCK;
 635                 else
 636                         blocksize = SPI_FLASH_BLOCK;
 637                 break;
 638         case 1:
 639                 fw_name = "/*(DEBLOBBED)*/";
 640                 if (card->atmel_flash)
 641                         blocksize = ATMEL_SOLOS_BLOCK;
 642                 else
 643                         blocksize = SPI_FLASH_BLOCK;
 644                 break;
 645         case 2:
 646                 if (card->fpga_version > LEGACY_BUFFERS){
 647                         fw_name = "/*(DEBLOBBED)*/";
 648                         if (card->atmel_flash)
 649                                 blocksize = ATMEL_FPGA_BLOCK;
 650                         else
 651                                 blocksize = SPI_FLASH_BLOCK;
 652                 } else {
 653                         dev_info(&card->dev->dev, "FPGA version doesn't support"
 654                                         " daughter board upgrades\n");
 655                         return -EPERM;
 656                 }
 657                 break;
 658         case 3:
 659                 if (card->fpga_version > LEGACY_BUFFERS){
 660                         fw_name = "/*(DEBLOBBED)*/";
 661                         if (card->atmel_flash)
 662                                 blocksize = ATMEL_SOLOS_BLOCK;
 663                         else
 664                                 blocksize = SPI_FLASH_BLOCK;
 665                 } else {
 666                         dev_info(&card->dev->dev, "FPGA version doesn't support"
 667                                         " daughter board upgrades\n");
 668                         return -EPERM;
 669                 }
 670                 break;
 671         default:
 672                 return -ENODEV;
 673         }
 674
 675         if (reject_firmware(&fw, fw_name, &card->dev->dev))
 676                 return -ENOENT;
 677
 678         dev_info(&card->dev->dev, "Flash upgrade starting\n");
 679
 680         /* New FPGAs require driver version before permitting flash upgrades */
 681         iowrite32(DRIVER_VERSION, card->config_regs + DRIVER_VER);
 682
 683         numblocks = fw->size / blocksize;
 684         dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
 685         dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
 686
 687         dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
 688         iowrite32(1, card->config_regs + FPGA_MODE);
 689         (void) ioread32(card->config_regs + FPGA_MODE);
 690
 691         /* Set mode to Chip Erase */
 692         if(chip == 0 || chip == 2)
 693                 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
 694         if(chip == 1 || chip == 3)
 695                 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
 696         iowrite32((chip * 2), card->config_regs + FLASH_MODE);
 697
 698
 699         iowrite32(1, card->config_regs + WRITE_FLASH);
 700         wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 701
 702         for (offset = 0; offset < fw->size; offset += blocksize) {
 703                 int i;
 704
 705                 /* Clear write flag */
 706                 iowrite32(0, card->config_regs + WRITE_FLASH);
 707
 708                 /* Set mode to Block Write */
 709                 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
 710                 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
 711
 712                 /* Copy block to buffer, swapping each 16 bits for Atmel flash */
 713                 for(i = 0; i < blocksize; i += 4) {
 714                         uint32_t word;
 715                         if (card->atmel_flash)
 716                                 word = swahb32p((uint32_t *)(fw->data + offset + i));
 717                         else
 718                                 word = *(uint32_t *)(fw->data + offset + i);
 719                         if(card->fpga_version > LEGACY_BUFFERS)
 720                                 iowrite32(word, FLASH_BUF + i);
 721                         else
 722                                 iowrite32(word, RX_BUF(card, 3) + i);
 723                 }
 724
 725                 /* Specify block number and then trigger flash write */
 726                 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
 727                 iowrite32(1, card->config_regs + WRITE_FLASH);
 728                 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 729         }
 730
 731         release_firmware(fw);
 732         iowrite32(0, card->config_regs + WRITE_FLASH);
 733         iowrite32(0, card->config_regs + FPGA_MODE);
 734         iowrite32(0, card->config_regs + FLASH_MODE);
 735         dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
 736         return 0;
 737 }
 738
 739 static irqreturn_t solos_irq(int irq, void *dev_id)
 740 {
 741         struct solos_card *card = dev_id;
 742         int handled = 1;
 743
 744         iowrite32(0, card->config_regs + IRQ_CLEAR);
 745
 746         /* If we're up and running, just kick the tasklet to process TX/RX */
 747         if (card->atmdev[0])
 748                 tasklet_schedule(&card->tlet);
 749         else
 750                 wake_up(&card->fw_wq);
 751
 752         return IRQ_RETVAL(handled);
 753 }
 754
 755 static void solos_bh(unsigned long card_arg)
 756 {
 757         struct solos_card *card = (void *)card_arg;
 758         uint32_t card_flags;
 759         uint32_t rx_done = 0;
 760         int port;
 761
 762         /*
 763          * Since fpga_tx() is going to need to read the flags under its lock,
 764          * it can return them to us so that we don't have to hit PCI MMIO
 765          * again for the same information
 766          */
 767         card_flags = fpga_tx(card);
 768
 769         for (port = 0; port < card->nr_ports; port++) {
 770                 if (card_flags & (0x10 << port)) {
 771                         struct pkt_hdr _hdr, *header;
 772                         struct sk_buff *skb;
 773                         struct atm_vcc *vcc;
 774                         int size;
 775
 776                         if (card->using_dma) {
 777                                 skb = card->rx_skb[port];
 778                                 card->rx_skb[port] = NULL;
 779
 780                                 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
 781                                                  RX_DMA_SIZE, DMA_FROM_DEVICE);
 782
 783                                 header = (void *)skb->data;
 784                                 size = le16_to_cpu(header->size);
 785                                 skb_put(skb, size + sizeof(*header));
 786                                 skb_pull(skb, sizeof(*header));
 787                         } else {
 788                                 header = &_hdr;
 789
 790                                 rx_done |= 0x10 << port;
 791
 792                                 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
 793
 794                                 size = le16_to_cpu(header->size);
 795                                 if (size > (card->buffer_size - sizeof(*header))){
 796                                         dev_warn(&card->dev->dev, "Invalid buffer size\n");
 797                                         continue;
 798                                 }
 799
 800                                 /* Use netdev_alloc_skb() because it adds NET_SKB_PAD of
 801                                  * headroom, and ensures we can route packets back out an
 802                                  * Ethernet interface (for example) without having to
 803                                  * reallocate. Adding NET_IP_ALIGN also ensures that both
 804                                  * PPPoATM and PPPoEoBR2684 packets end up aligned. */
 805                                 skb = netdev_alloc_skb_ip_align(NULL, size + 1);
 806                                 if (!skb) {
 807                                         if (net_ratelimit())
 808                                                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
 809                                         continue;
 810                                 }
 811
 812                                 memcpy_fromio(skb_put(skb, size),
 813                                               RX_BUF(card, port) + sizeof(*header),
 814                                               size);
 815                         }
 816                         if (atmdebug) {
 817                                 dev_info(&card->dev->dev, "Received: port %d\n", port);
 818                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
 819                                          size, le16_to_cpu(header->vpi),
 820                                          le16_to_cpu(header->vci));
 821                                 print_buffer(skb);
 822                         }
 823
 824                         switch (le16_to_cpu(header->type)) {
 825                         case PKT_DATA:
 826                                 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
 827                                                le16_to_cpu(header->vci));
 828                                 if (!vcc) {
 829                                         if (net_ratelimit())
 830                                                 dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
 831                                                          le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
 832                                                          port);
 833                                         dev_kfree_skb_any(skb);
 834                                         break;
 835                                 }
 836                                 atm_charge(vcc, skb->truesize);
 837                                 vcc->push(vcc, skb);
 838                                 atomic_inc(&vcc->stats->rx);
 839                                 break;
 840
 841                         case PKT_STATUS:
 842                                 if (process_status(card, port, skb) &&
 843                                     net_ratelimit()) {
 844                                         dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
 845                                         print_buffer(skb);
 846                                 }
 847                                 dev_kfree_skb_any(skb);
 848                                 break;
 849
 850                         case PKT_COMMAND:
 851                         default: /* FIXME: Not really, surely? */
 852                                 if (process_command(card, port, skb))
 853                                         break;
 854                                 spin_lock(&card->cli_queue_lock);
 855                                 if (skb_queue_len(&card->cli_queue[port]) > 10) {
 856                                         if (net_ratelimit())
 857                                                 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
 858                                                          port);
 859                                         dev_kfree_skb_any(skb);
 860                                 } else
 861                                         skb_queue_tail(&card->cli_queue[port], skb);
 862                                 spin_unlock(&card->cli_queue_lock);
 863                                 break;
 864                         }
 865                 }
 866                 /* Allocate RX skbs for any ports which need them */
 867                 if (card->using_dma && card->atmdev[port] &&
 868                     !card->rx_skb[port]) {
 869                         /* Unlike the MMIO case (qv) we can't add NET_IP_ALIGN
 870                          * here; the FPGA can only DMA to addresses which are
 871                          * aligned to 4 bytes. */
 872                         struct sk_buff *skb = dev_alloc_skb(RX_DMA_SIZE);
 873                         if (skb) {
 874                                 SKB_CB(skb)->dma_addr =
 875                                         dma_map_single(&card->dev->dev, skb->data,
 876                                                        RX_DMA_SIZE, DMA_FROM_DEVICE);
 877                                 iowrite32(SKB_CB(skb)->dma_addr,
 878                                           card->config_regs + RX_DMA_ADDR(port));
 879                                 card->rx_skb[port] = skb;
 880                         } else {
 881                                 if (net_ratelimit())
 882                                         dev_warn(&card->dev->dev, "Failed to allocate RX skb");
 883
 884                                 /* We'll have to try again later */
 885                                 tasklet_schedule(&card->tlet);
 886                         }
 887                 }
 888         }
 889         if (rx_done)
 890                 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
 891
 892         return;
 893 }
 894
 895 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
 896 {
 897         struct hlist_head *head;
 898         struct atm_vcc *vcc = NULL;
 899         struct sock *s;
 900
 901         read_lock(&vcc_sklist_lock);
 902         head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 903         sk_for_each(s, head) {
 904                 vcc = atm_sk(s);
 905                 if (vcc->dev == dev && vcc->vci == vci &&
 906                     vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
 907                     test_bit(ATM_VF_READY, &vcc->flags))
 908                         goto out;
 909         }
 910         vcc = NULL;
 911  out:
 912         read_unlock(&vcc_sklist_lock);
 913         return vcc;
 914 }
 915
 916 static int popen(struct atm_vcc *vcc)
 917 {
 918         struct solos_card *card = vcc->dev->dev_data;
 919         struct sk_buff *skb;
 920         struct pkt_hdr *header;
 921
 922         if (vcc->qos.aal != ATM_AAL5) {
 923                 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
 924                          vcc->qos.aal);
 925                 return -EINVAL;
 926         }
 927
 928         skb = alloc_skb(sizeof(*header), GFP_KERNEL);
 929         if (!skb) {
 930                 if (net_ratelimit())
 931                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
 932                 return -ENOMEM;
 933         }
 934         header = skb_put(skb, sizeof(*header));
 935
 936         header->size = cpu_to_le16(0);
 937         header->vpi = cpu_to_le16(vcc->vpi);
 938         header->vci = cpu_to_le16(vcc->vci);
 939         header->type = cpu_to_le16(PKT_POPEN);
 940
 941         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 942
 943         set_bit(ATM_VF_ADDR, &vcc->flags);
 944         set_bit(ATM_VF_READY, &vcc->flags);
 945
 946         return 0;
 947 }
 948
 949 static void pclose(struct atm_vcc *vcc)
 950 {
 951         struct solos_card *card = vcc->dev->dev_data;
 952         unsigned char port = SOLOS_CHAN(vcc->dev);
 953         struct sk_buff *skb, *tmpskb;
 954         struct pkt_hdr *header;
 955
 956         /* Remove any yet-to-be-transmitted packets from the pending queue */
 957         spin_lock(&card->tx_queue_lock);
 958         skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {
 959                 if (SKB_CB(skb)->vcc == vcc) {
 960                         skb_unlink(skb, &card->tx_queue[port]);
 961                         solos_pop(vcc, skb);
 962                 }
 963         }
 964         spin_unlock(&card->tx_queue_lock);
 965
 966         skb = alloc_skb(sizeof(*header), GFP_KERNEL);
 967         if (!skb) {
 968                 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
 969                 return;
 970         }
 971         header = skb_put(skb, sizeof(*header));
 972
 973         header->size = cpu_to_le16(0);
 974         header->vpi = cpu_to_le16(vcc->vpi);
 975         header->vci = cpu_to_le16(vcc->vci);
 976         header->type = cpu_to_le16(PKT_PCLOSE);
 977
 978         skb_get(skb);
 979         fpga_queue(card, port, skb, NULL);
 980
 981         if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))
 982                 dev_warn(&card->dev->dev,
 983                          "Timeout waiting for VCC close on port %d\n", port);
 984
 985         dev_kfree_skb(skb);
 986
 987         /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
 988            tasklet has finished processing any incoming packets (and, more to
 989            the point, using the vcc pointer). */
 990         tasklet_unlock_wait(&card->tlet);
 991
 992         clear_bit(ATM_VF_ADDR, &vcc->flags);
 993
 994         return;
 995 }
 996
 997 static int print_buffer(struct sk_buff *buf)
 998 {
 999         int len,i;
1000         char msg[500];
1001         char item[10];
1002
1003         len = buf->len;
1004         for (i = 0; i < len; i++){
1005                 if(i % 8 == 0)
1006                         sprintf(msg, "%02X: ", i);
1007
1008                 sprintf(item,"%02X ",*(buf->data + i));
1009                 strcat(msg, item);
1010                 if(i % 8 == 7) {
1011                         sprintf(item, "\n");
1012                         strcat(msg, item);
1013                         printk(KERN_DEBUG "%s", msg);
1014                 }
1015         }
1016         if (i % 8 != 0) {
1017                 sprintf(item, "\n");
1018                 strcat(msg, item);
1019                 printk(KERN_DEBUG "%s", msg);
1020         }
1021         printk(KERN_DEBUG "\n");
1022
1023         return 0;
1024 }
1025
1026 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
1027                        struct atm_vcc *vcc)
1028 {
1029         int old_len;
1030         unsigned long flags;
1031
1032         SKB_CB(skb)->vcc = vcc;
1033
1034         spin_lock_irqsave(&card->tx_queue_lock, flags);
1035         old_len = skb_queue_len(&card->tx_queue[port]);
1036         skb_queue_tail(&card->tx_queue[port], skb);
1037         if (!old_len)
1038                 card->tx_mask |= (1 << port);
1039         spin_unlock_irqrestore(&card->tx_queue_lock, flags);
1040
1041         /* Theoretically we could just schedule the tasklet here, but
1042            that introduces latency we don't want -- it's noticeable */
1043         if (!old_len)
1044                 fpga_tx(card);
1045 }
1046
1047 static uint32_t fpga_tx(struct solos_card *card)
1048 {
1049         uint32_t tx_pending, card_flags;
1050         uint32_t tx_started = 0;
1051         struct sk_buff *skb;
1052         struct atm_vcc *vcc;
1053         unsigned char port;
1054         unsigned long flags;
1055
1056         spin_lock_irqsave(&card->tx_lock, flags);
1057
1058         card_flags = ioread32(card->config_regs + FLAGS_ADDR);
1059         /*
1060          * The queue lock is required for _writing_ to tx_mask, but we're
1061          * OK to read it here without locking. The only potential update
1062          * that we could race with is in fpga_queue() where it sets a bit
1063          * for a new port... but it's going to call this function again if
1064          * it's doing that, anyway.
1065          */
1066         tx_pending = card->tx_mask & ~card_flags;
1067
1068         for (port = 0; tx_pending; tx_pending >>= 1, port++) {
1069                 if (tx_pending & 1) {
1070                         struct sk_buff *oldskb = card->tx_skb[port];
1071                         if (oldskb) {
1072                                 dma_unmap_single(&card->dev->dev, SKB_CB(oldskb)->dma_addr,
1073                                                  oldskb->len, DMA_TO_DEVICE);
1074                                 card->tx_skb[port] = NULL;
1075                         }
1076                         spin_lock(&card->tx_queue_lock);
1077                         skb = skb_dequeue(&card->tx_queue[port]);
1078                         if (!skb)
1079                                 card->tx_mask &= ~(1 << port);
1080                         spin_unlock(&card->tx_queue_lock);
1081
1082                         if (skb && !card->using_dma) {
1083                                 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
1084                                 tx_started |= 1 << port;
1085                                 oldskb = skb; /* We're done with this skb already */
1086                         } else if (skb && card->using_dma) {
1087                                 unsigned char *data = skb->data;
1088                                 if ((unsigned long)data & card->dma_alignment) {
1089                                         data = card->dma_bounce + (BUF_SIZE * port);
1090                                         memcpy(data, skb->data, skb->len);
1091                                 }
1092                                 SKB_CB(skb)->dma_addr = dma_map_single(&card->dev->dev, data,
1093                                                                        skb->len, DMA_TO_DEVICE);
1094                                 card->tx_skb[port] = skb;
1095                                 iowrite32(SKB_CB(skb)->dma_addr,
1096                                           card->config_regs + TX_DMA_ADDR(port));
1097                         }
1098
1099                         if (!oldskb)
1100                                 continue;
1101
1102                         /* Clean up and free oldskb now it's gone */
1103                         if (atmdebug) {
1104                                 struct pkt_hdr *header = (void *)oldskb->data;
1105                                 int size = le16_to_cpu(header->size);
1106
1107                                 skb_pull(oldskb, sizeof(*header));
1108                                 dev_info(&card->dev->dev, "Transmitted: port %d\n",
1109                                          port);
1110                                 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
1111                                          size, le16_to_cpu(header->vpi),
1112                                          le16_to_cpu(header->vci));
1113                                 print_buffer(oldskb);
1114                         }
1115
1116                         vcc = SKB_CB(oldskb)->vcc;
1117
1118                         if (vcc) {
1119                                 atomic_inc(&vcc->stats->tx);
1120                                 solos_pop(vcc, oldskb);
1121                         } else {
1122                                 dev_kfree_skb_irq(oldskb);
1123                                 wake_up(&card->param_wq);
1124                         }
1125                 }
1126         }
1127         /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
1128         if (tx_started)
1129                 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1130
1131         spin_unlock_irqrestore(&card->tx_lock, flags);
1132         return card_flags;
1133 }
1134
1135 static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1136 {
1137         struct solos_card *card = vcc->dev->dev_data;
1138         struct pkt_hdr *header;
1139         int pktlen;
1140
1141         pktlen = skb->len;
1142         if (pktlen > (BUF_SIZE - sizeof(*header))) {
1143                 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1144                 solos_pop(vcc, skb);
1145                 return 0;
1146         }
1147
1148         if (!skb_clone_writable(skb, sizeof(*header))) {
1149                 int expand_by = 0;
1150                 int ret;
1151
1152                 if (skb_headroom(skb) < sizeof(*header))
1153                         expand_by = sizeof(*header) - skb_headroom(skb);
1154
1155                 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1156                 if (ret) {
1157                         dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1158                         solos_pop(vcc, skb);
1159                         return ret;
1160                 }
1161         }
1162
1163         header = skb_push(skb, sizeof(*header));
1164
1165         /* This does _not_ include the size of the header */
1166         header->size = cpu_to_le16(pktlen);
1167         header->vpi = cpu_to_le16(vcc->vpi);
1168         header->vci = cpu_to_le16(vcc->vci);
1169         header->type = cpu_to_le16(PKT_DATA);
1170
1171         fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1172
1173         return 0;
1174 }
1175
1176 static const struct atmdev_ops fpga_ops = {
1177         .open =         popen,
1178         .close =        pclose,
1179         .ioctl =        NULL,
1180         .send =         psend,
1181         .send_oam =     NULL,
1182         .phy_put =      NULL,
1183         .phy_get =      NULL,
1184         .change_qos =   NULL,
1185         .proc_read =    NULL,
1186         .owner =        THIS_MODULE
1187 };
1188
1189 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1190 {
1191         int err;
1192         uint16_t fpga_ver;
1193         uint8_t major_ver, minor_ver;
1194         uint32_t data32;
1195         struct solos_card *card;
1196
1197         card = kzalloc(sizeof(*card), GFP_KERNEL);
1198         if (!card)
1199                 return -ENOMEM;
1200
1201         card->dev = dev;
1202         init_waitqueue_head(&card->fw_wq);
1203         init_waitqueue_head(&card->param_wq);
1204
1205         err = pci_enable_device(dev);
1206         if (err) {
1207                 dev_warn(&dev->dev,  "Failed to enable PCI device\n");
1208                 goto out;
1209         }
1210
1211         err = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
1212         if (err) {
1213                 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1214                 goto out;
1215         }
1216
1217         err = pci_request_regions(dev, "solos");
1218         if (err) {
1219                 dev_warn(&dev->dev, "Failed to request regions\n");
1220                 goto out;
1221         }
1222
1223         card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1224         if (!card->config_regs) {
1225                 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1226                 err = -ENOMEM;
1227                 goto out_release_regions;
1228         }
1229         card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1230         if (!card->buffers) {
1231                 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1232                 err = -ENOMEM;
1233                 goto out_unmap_config;
1234         }
1235
1236         if (reset) {
1237                 iowrite32(1, card->config_regs + FPGA_MODE);
1238                 ioread32(card->config_regs + FPGA_MODE);
1239
1240                 iowrite32(0, card->config_regs + FPGA_MODE);
1241                 ioread32(card->config_regs + FPGA_MODE);
1242         }
1243
1244         data32 = ioread32(card->config_regs + FPGA_VER);
1245         fpga_ver = (data32 & 0x0000FFFF);
1246         major_ver = ((data32 & 0xFF000000) >> 24);
1247         minor_ver = ((data32 & 0x00FF0000) >> 16);
1248         card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1249         if (card->fpga_version > LEGACY_BUFFERS)
1250                 card->buffer_size = BUF_SIZE;
1251         else
1252                 card->buffer_size = OLD_BUF_SIZE;
1253         dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1254                  major_ver, minor_ver, fpga_ver);
1255
1256         if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade ||
1257                               db_fpga_upgrade || db_firmware_upgrade)) {
1258                 dev_warn(&dev->dev,
1259                          "FPGA too old; cannot upgrade flash. Use JTAG.\n");
1260                 fpga_upgrade = firmware_upgrade = 0;
1261                 db_fpga_upgrade = db_firmware_upgrade = 0;
1262         }
1263
1264         /* Stopped using Atmel flash after 0.03-38 */
1265         if (fpga_ver < 39)
1266                 card->atmel_flash = 1;
1267         else
1268                 card->atmel_flash = 0;
1269
1270         data32 = ioread32(card->config_regs + PORTS);
1271         card->nr_ports = (data32 & 0x000000FF);
1272
1273         if (card->fpga_version >= DMA_SUPPORTED) {
1274                 pci_set_master(dev);
1275                 card->using_dma = 1;
1276                 if (1) { /* All known FPGA versions so far */
1277                         card->dma_alignment = 3;
1278                         card->dma_bounce = kmalloc_array(card->nr_ports,
1279                                                          BUF_SIZE, GFP_KERNEL);
1280                         if (!card->dma_bounce) {
1281                                 dev_warn(&card->dev->dev, "Failed to allocate DMA bounce buffers\n");
1282                                 err = -ENOMEM;
1283                                 /* Fallback to MMIO doesn't work */
1284                                 goto out_unmap_both;
1285                         }
1286                 }
1287         } else {
1288                 card->using_dma = 0;
1289                 /* Set RX empty flag for all ports */
1290                 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1291         }
1292
1293         pci_set_drvdata(dev, card);
1294
1295         tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1296         spin_lock_init(&card->tx_lock);
1297         spin_lock_init(&card->tx_queue_lock);
1298         spin_lock_init(&card->cli_queue_lock);
1299         spin_lock_init(&card->param_queue_lock);
1300         INIT_LIST_HEAD(&card->param_queue);
1301
1302         err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1303                           "solos-pci", card);
1304         if (err) {
1305                 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1306                 goto out_unmap_both;
1307         }
1308
1309         iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1310
1311         if (fpga_upgrade)
1312                 flash_upgrade(card, 0);
1313
1314         if (firmware_upgrade)
1315                 flash_upgrade(card, 1);
1316
1317         if (db_fpga_upgrade)
1318                 flash_upgrade(card, 2);
1319
1320         if (db_firmware_upgrade)
1321                 flash_upgrade(card, 3);
1322
1323         err = atm_init(card, &dev->dev);
1324         if (err)
1325                 goto out_free_irq;
1326
1327         if (card->fpga_version >= DMA_SUPPORTED &&
1328             sysfs_create_group(&card->dev->dev.kobj, &gpio_attr_group))
1329                 dev_err(&card->dev->dev, "Could not register parameter group for GPIOs\n");
1330
1331         return 0;
1332
1333  out_free_irq:
1334         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1335         free_irq(dev->irq, card);
1336         tasklet_kill(&card->tlet);
1337
1338  out_unmap_both:
1339         kfree(card->dma_bounce);
1340         pci_iounmap(dev, card->buffers);
1341  out_unmap_config:
1342         pci_iounmap(dev, card->config_regs);
1343  out_release_regions:
1344         pci_release_regions(dev);
1345  out:
1346         kfree(card);
1347         return err;
1348 }
1349
1350 static int atm_init(struct solos_card *card, struct device *parent)
1351 {
1352         int i;
1353
1354         for (i = 0; i < card->nr_ports; i++) {
1355                 struct sk_buff *skb;
1356                 struct pkt_hdr *header;
1357
1358                 skb_queue_head_init(&card->tx_queue[i]);
1359                 skb_queue_head_init(&card->cli_queue[i]);
1360
1361                 card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);
1362                 if (!card->atmdev[i]) {
1363                         dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1364                         atm_remove(card);
1365                         return -ENODEV;
1366                 }
1367                 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1368                         dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1369                 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1370                         dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1371
1372                 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1373
1374                 card->atmdev[i]->ci_range.vpi_bits = 8;
1375                 card->atmdev[i]->ci_range.vci_bits = 16;
1376                 card->atmdev[i]->dev_data = card;
1377                 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1378                 atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
1379
1380                 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
1381                 if (!skb) {
1382                         dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1383                         continue;
1384                 }
1385
1386                 header = skb_put(skb, sizeof(*header));
1387
1388                 header->size = cpu_to_le16(0);
1389                 header->vpi = cpu_to_le16(0);
1390                 header->vci = cpu_to_le16(0);
1391                 header->type = cpu_to_le16(PKT_STATUS);
1392
1393                 fpga_queue(card, i, skb, NULL);
1394         }
1395         return 0;
1396 }
1397
1398 static void atm_remove(struct solos_card *card)
1399 {
1400         int i;
1401
1402         for (i = 0; i < card->nr_ports; i++) {
1403                 if (card->atmdev[i]) {
1404                         struct sk_buff *skb;
1405
1406                         dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1407
1408                         sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1409                         atm_dev_deregister(card->atmdev[i]);
1410
1411                         skb = card->rx_skb[i];
1412                         if (skb) {
1413                                 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1414                                                  RX_DMA_SIZE, DMA_FROM_DEVICE);
1415                                 dev_kfree_skb(skb);
1416                         }
1417                         skb = card->tx_skb[i];
1418                         if (skb) {
1419                                 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1420                                                  skb->len, DMA_TO_DEVICE);
1421                                 dev_kfree_skb(skb);
1422                         }
1423                         while ((skb = skb_dequeue(&card->tx_queue[i])))
1424                                 dev_kfree_skb(skb);
1425
1426                 }
1427         }
1428 }
1429
1430 static void fpga_remove(struct pci_dev *dev)
1431 {
1432         struct solos_card *card = pci_get_drvdata(dev);
1433
1434         /* Disable IRQs */
1435         iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1436
1437         /* Reset FPGA */
1438         iowrite32(1, card->config_regs + FPGA_MODE);
1439         (void)ioread32(card->config_regs + FPGA_MODE);
1440
1441         if (card->fpga_version >= DMA_SUPPORTED)
1442                 sysfs_remove_group(&card->dev->dev.kobj, &gpio_attr_group);
1443
1444         atm_remove(card);
1445
1446         free_irq(dev->irq, card);
1447         tasklet_kill(&card->tlet);
1448
1449         kfree(card->dma_bounce);
1450
1451         /* Release device from reset */
1452         iowrite32(0, card->config_regs + FPGA_MODE);
1453         (void)ioread32(card->config_regs + FPGA_MODE);
1454
1455         pci_iounmap(dev, card->buffers);
1456         pci_iounmap(dev, card->config_regs);
1457
1458         pci_release_regions(dev);
1459         pci_disable_device(dev);
1460
1461         kfree(card);
1462 }
1463
1464 static const struct pci_device_id fpga_pci_tbl[] = {
1465         { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1466         { 0, }
1467 };
1468
1469 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1470
1471 static struct pci_driver fpga_driver = {
1472         .name =         "solos",
1473         .id_table =     fpga_pci_tbl,
1474         .probe =        fpga_probe,
1475         .remove =       fpga_remove,
1476 };
1477
1478
1479 static int __init solos_pci_init(void)
1480 {
1481         BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb));
1482
1483         printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1484         return pci_register_driver(&fpga_driver);
1485 }
1486
1487 static void __exit solos_pci_exit(void)
1488 {
1489         pci_unregister_driver(&fpga_driver);
1490         printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1491 }
1492
1493 module_init(solos_pci_init);
1494 module_exit(solos_pci_exit);