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