linux/drivers/atm/solos-pci.c
<<
>>
Prefs
   1/*
   2 * Driver for the Solos PCI ADSL2+ card, designed to support Linux by
   3 *  Traverse Technologies -- http://www.traverse.com.au/
   4 *  Xrio Limited          -- http://www.xrio.com/
   5 *
   6 *
   7 * Copyright © 2008 Traverse Technologies
   8 * Copyright © 2008 Intel Corporation
   9 *
  10 * Authors: Nathan Williams <nathan@traverse.com.au>
  11 *          David Woodhouse <dwmw2@infradead.org>
  12 *          Treker Chen <treker@xrio.com>
  13 *
  14 * This program is free software; you can redistribute it and/or
  15 * modify it under the terms of the GNU General Public License
  16 * version 2, as published by the Free Software Foundation.
  17 *
  18 * This program is distributed in the hope that it will be useful,
  19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 * GNU General Public License for more details.
  22 */
  23
  24#define DEBUG
  25#define VERBOSE_DEBUG
  26
  27#include <linux/interrupt.h>
  28#include <linux/module.h>
  29#include <linux/kernel.h>
  30#include <linux/errno.h>
  31#include <linux/ioport.h>
  32#include <linux/types.h>
  33#include <linux/pci.h>
  34#include <linux/atm.h>
  35#include <linux/atmdev.h>
  36#include <linux/skbuff.h>
  37#include <linux/sysfs.h>
  38#include <linux/device.h>
  39#include <linux/kobject.h>
  40#include <linux/firmware.h>
  41#include <linux/ctype.h>
  42#include <linux/swab.h>
  43#include <linux/slab.h>
  44
  45#define VERSION "0.07"
  46#define PTAG "solos-pci"
  47
  48#define CONFIG_RAM_SIZE 128
  49#define FLAGS_ADDR      0x7C
  50#define IRQ_EN_ADDR     0x78
  51#define FPGA_VER        0x74
  52#define IRQ_CLEAR       0x70
  53#define WRITE_FLASH     0x6C
  54#define PORTS           0x68
  55#define FLASH_BLOCK     0x64
  56#define FLASH_BUSY      0x60
  57#define FPGA_MODE       0x5C
  58#define FLASH_MODE      0x58
  59#define TX_DMA_ADDR(port)       (0x40 + (4 * (port)))
  60#define RX_DMA_ADDR(port)       (0x30 + (4 * (port)))
  61
  62#define DATA_RAM_SIZE   32768
  63#define BUF_SIZE        2048
  64#define OLD_BUF_SIZE    4096 /* For FPGA versions <= 2*/
  65#define FPGA_PAGE       528 /* FPGA flash page size*/
  66#define SOLOS_PAGE      512 /* Solos flash page size*/
  67#define FPGA_BLOCK      (FPGA_PAGE * 8) /* FPGA flash block size*/
  68#define SOLOS_BLOCK     (SOLOS_PAGE * 8) /* Solos flash block size*/
  69
  70#define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
  71#define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
  72#define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
  73
  74#define RX_DMA_SIZE     2048
  75
  76#define FPGA_VERSION(a,b) (((a) << 8) + (b))
  77#define LEGACY_BUFFERS  2
  78#define DMA_SUPPORTED   4
  79
  80static int reset = 0;
  81static int atmdebug = 0;
  82static int firmware_upgrade = 0;
  83static int fpga_upgrade = 0;
  84static int db_firmware_upgrade = 0;
  85static int db_fpga_upgrade = 0;
  86
  87struct pkt_hdr {
  88        __le16 size;
  89        __le16 vpi;
  90        __le16 vci;
  91        __le16 type;
  92};
  93
  94struct solos_skb_cb {
  95        struct atm_vcc *vcc;
  96        uint32_t dma_addr;
  97};
  98
  99
 100#define SKB_CB(skb)             ((struct solos_skb_cb *)skb->cb)
 101
 102#define PKT_DATA        0
 103#define PKT_COMMAND     1
 104#define PKT_POPEN       3
 105#define PKT_PCLOSE      4
 106#define PKT_STATUS      5
 107
 108struct solos_card {
 109        void __iomem *config_regs;
 110        void __iomem *buffers;
 111        int nr_ports;
 112        int tx_mask;
 113        struct pci_dev *dev;
 114        struct atm_dev *atmdev[4];
 115        struct tasklet_struct tlet;
 116        spinlock_t tx_lock;
 117        spinlock_t tx_queue_lock;
 118        spinlock_t cli_queue_lock;
 119        spinlock_t param_queue_lock;
 120        struct list_head param_queue;
 121        struct sk_buff_head tx_queue[4];
 122        struct sk_buff_head cli_queue[4];
 123        struct sk_buff *tx_skb[4];
 124        struct sk_buff *rx_skb[4];
 125        wait_queue_head_t param_wq;
 126        wait_queue_head_t fw_wq;
 127        int using_dma;
 128        int fpga_version;
 129        int buffer_size;
 130};
 131
 132
 133struct 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
 142MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
 143MODULE_DESCRIPTION("Solos PCI driver");
 144MODULE_VERSION(VERSION);
 145MODULE_LICENSE("GPL");
 146MODULE_FIRMWARE("solos-FPGA.bin");
 147MODULE_FIRMWARE("solos-Firmware.bin");
 148MODULE_FIRMWARE("solos-db-FPGA.bin");
 149MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
 150MODULE_PARM_DESC(atmdebug, "Print ATM data");
 151MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
 152MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
 153MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
 154MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
 155module_param(reset, int, 0444);
 156module_param(atmdebug, int, 0644);
 157module_param(firmware_upgrade, int, 0444);
 158module_param(fpga_upgrade, int, 0444);
 159module_param(db_firmware_upgrade, int, 0444);
 160module_param(db_fpga_upgrade, int, 0444);
 161
 162static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 163                       struct atm_vcc *vcc);
 164static uint32_t fpga_tx(struct solos_card *);
 165static irqreturn_t solos_irq(int irq, void *dev_id);
 166static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
 167static int list_vccs(int vci);
 168static int atm_init(struct solos_card *, struct device *);
 169static void atm_remove(struct solos_card *);
 170static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
 171static void solos_bh(unsigned long);
 172static int print_buffer(struct sk_buff *buf);
 173
 174static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
 175{
 176        if (vcc->pop)
 177                vcc->pop(vcc, skb);
 178        else
 179                dev_kfree_skb_any(skb);
 180}
 181
 182static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
 183                                char *buf)
 184{
 185        struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 186        struct solos_card *card = atmdev->dev_data;
 187        struct solos_param prm;
 188        struct sk_buff *skb;
 189        struct pkt_hdr *header;
 190        int buflen;
 191
 192        buflen = strlen(attr->attr.name) + 10;
 193
 194        skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 195        if (!skb) {
 196                dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
 197                return -ENOMEM;
 198        }
 199
 200        header = (void *)skb_put(skb, sizeof(*header));
 201
 202        buflen = snprintf((void *)&header[1], buflen - 1,
 203                          "L%05d\n%s\n", current->pid, attr->attr.name);
 204        skb_put(skb, buflen);
 205
 206        header->size = cpu_to_le16(buflen);
 207        header->vpi = cpu_to_le16(0);
 208        header->vci = cpu_to_le16(0);
 209        header->type = cpu_to_le16(PKT_COMMAND);
 210
 211        prm.pid = current->pid;
 212        prm.response = NULL;
 213        prm.port = SOLOS_CHAN(atmdev);
 214
 215        spin_lock_irq(&card->param_queue_lock);
 216        list_add(&prm.list, &card->param_queue);
 217        spin_unlock_irq(&card->param_queue_lock);
 218
 219        fpga_queue(card, prm.port, skb, NULL);
 220
 221        wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 222
 223        spin_lock_irq(&card->param_queue_lock);
 224        list_del(&prm.list);
 225        spin_unlock_irq(&card->param_queue_lock);
 226
 227        if (!prm.response)
 228                return -EIO;
 229
 230        buflen = prm.response->len;
 231        memcpy(buf, prm.response->data, buflen);
 232        kfree_skb(prm.response);
 233
 234        return buflen;
 235}
 236
 237static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
 238                                 const char *buf, size_t count)
 239{
 240        struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 241        struct solos_card *card = atmdev->dev_data;
 242        struct solos_param prm;
 243        struct sk_buff *skb;
 244        struct pkt_hdr *header;
 245        int buflen;
 246        ssize_t ret;
 247
 248        buflen = strlen(attr->attr.name) + 11 + count;
 249
 250        skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
 251        if (!skb) {
 252                dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
 253                return -ENOMEM;
 254        }
 255
 256        header = (void *)skb_put(skb, sizeof(*header));
 257
 258        buflen = snprintf((void *)&header[1], buflen - 1,
 259                          "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
 260
 261        skb_put(skb, buflen);
 262        header->size = cpu_to_le16(buflen);
 263        header->vpi = cpu_to_le16(0);
 264        header->vci = cpu_to_le16(0);
 265        header->type = cpu_to_le16(PKT_COMMAND);
 266
 267        prm.pid = current->pid;
 268        prm.response = NULL;
 269        prm.port = SOLOS_CHAN(atmdev);
 270
 271        spin_lock_irq(&card->param_queue_lock);
 272        list_add(&prm.list, &card->param_queue);
 273        spin_unlock_irq(&card->param_queue_lock);
 274
 275        fpga_queue(card, prm.port, skb, NULL);
 276
 277        wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
 278
 279        spin_lock_irq(&card->param_queue_lock);
 280        list_del(&prm.list);
 281        spin_unlock_irq(&card->param_queue_lock);
 282
 283        skb = prm.response;
 284
 285        if (!skb)
 286                return -EIO;
 287
 288        buflen = skb->len;
 289
 290        /* Sometimes it has a newline, sometimes it doesn't. */
 291        if (skb->data[buflen - 1] == '\n')
 292                buflen--;
 293
 294        if (buflen == 2 && !strncmp(skb->data, "OK", 2))
 295                ret = count;
 296        else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
 297                ret = -EIO;
 298        else {
 299                /* We know we have enough space allocated for this; we allocated 
 300                   it ourselves */
 301                skb->data[buflen] = 0;
 302        
 303                dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
 304                         skb->data);
 305                ret = -EIO;
 306        }
 307        kfree_skb(skb);
 308
 309        return ret;
 310}
 311
 312static char *next_string(struct sk_buff *skb)
 313{
 314        int i = 0;
 315        char *this = skb->data;
 316        
 317        for (i = 0; i < skb->len; i++) {
 318                if (this[i] == '\n') {
 319                        this[i] = 0;
 320                        skb_pull(skb, i + 1);
 321                        return this;
 322                }
 323                if (!isprint(this[i]))
 324                        return NULL;
 325        }
 326        return NULL;
 327}
 328
 329/*
 330 * Status packet has fields separated by \n, starting with a version number
 331 * for the information therein. Fields are....
 332 *
 333 *     packet version
 334 *     RxBitRate        (version >= 1)
 335 *     TxBitRate        (version >= 1)
 336 *     State            (version >= 1)
 337 *     LocalSNRMargin   (version >= 1)
 338 *     LocalLineAttn    (version >= 1)
 339 */       
 340static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
 341{
 342        char *str, *end, *state_str, *snr, *attn;
 343        int ver, rate_up, rate_down;
 344
 345        if (!card->atmdev[port])
 346                return -ENODEV;
 347
 348        str = next_string(skb);
 349        if (!str)
 350                return -EIO;
 351
 352        ver = simple_strtol(str, NULL, 10);
 353        if (ver < 1) {
 354                dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
 355                         ver);
 356                return -EIO;
 357        }
 358
 359        str = next_string(skb);
 360        if (!str)
 361                return -EIO;
 362        if (!strcmp(str, "ERROR")) {
 363                dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
 364                         port);
 365                return 0;
 366        }
 367
 368        rate_down = simple_strtol(str, &end, 10);
 369        if (*end)
 370                return -EIO;
 371
 372        str = next_string(skb);
 373        if (!str)
 374                return -EIO;
 375        rate_up = simple_strtol(str, &end, 10);
 376        if (*end)
 377                return -EIO;
 378
 379        state_str = next_string(skb);
 380        if (!state_str)
 381                return -EIO;
 382
 383        /* Anything but 'Showtime' is down */
 384        if (strcmp(state_str, "Showtime")) {
 385                atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
 386                dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
 387                return 0;
 388        }
 389
 390        snr = next_string(skb);
 391        if (!snr)
 392                return -EIO;
 393        attn = next_string(skb);
 394        if (!attn)
 395                return -EIO;
 396
 397        dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
 398                 port, state_str, rate_down/1000, rate_up/1000,
 399                 snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
 400        
 401        card->atmdev[port]->link_rate = rate_down / 424;
 402        atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
 403
 404        return 0;
 405}
 406
 407static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
 408{
 409        struct solos_param *prm;
 410        unsigned long flags;
 411        int cmdpid;
 412        int found = 0;
 413
 414        if (skb->len < 7)
 415                return 0;
 416
 417        if (skb->data[0] != 'L'    || !isdigit(skb->data[1]) ||
 418            !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
 419            !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
 420            skb->data[6] != '\n')
 421                return 0;
 422
 423        cmdpid = simple_strtol(&skb->data[1], NULL, 10);
 424
 425        spin_lock_irqsave(&card->param_queue_lock, flags);
 426        list_for_each_entry(prm, &card->param_queue, list) {
 427                if (prm->port == port && prm->pid == cmdpid) {
 428                        prm->response = skb;
 429                        skb_pull(skb, 7);
 430                        wake_up(&card->param_wq);
 431                        found = 1;
 432                        break;
 433                }
 434        }
 435        spin_unlock_irqrestore(&card->param_queue_lock, flags);
 436        return found;
 437}
 438
 439static ssize_t console_show(struct device *dev, struct device_attribute *attr,
 440                            char *buf)
 441{
 442        struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 443        struct solos_card *card = atmdev->dev_data;
 444        struct sk_buff *skb;
 445        unsigned int len;
 446
 447        spin_lock(&card->cli_queue_lock);
 448        skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
 449        spin_unlock(&card->cli_queue_lock);
 450        if(skb == NULL)
 451                return sprintf(buf, "No data.\n");
 452
 453        len = skb->len;
 454        memcpy(buf, skb->data, len);
 455        dev_dbg(&card->dev->dev, "len: %d\n", len);
 456
 457        kfree_skb(skb);
 458        return len;
 459}
 460
 461static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
 462{
 463        struct sk_buff *skb;
 464        struct pkt_hdr *header;
 465
 466        if (size > (BUF_SIZE - sizeof(*header))) {
 467                dev_dbg(&card->dev->dev, "Command is too big.  Dropping request\n");
 468                return 0;
 469        }
 470        skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
 471        if (!skb) {
 472                dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
 473                return 0;
 474        }
 475
 476        header = (void *)skb_put(skb, sizeof(*header));
 477
 478        header->size = cpu_to_le16(size);
 479        header->vpi = cpu_to_le16(0);
 480        header->vci = cpu_to_le16(0);
 481        header->type = cpu_to_le16(PKT_COMMAND);
 482
 483        memcpy(skb_put(skb, size), buf, size);
 484
 485        fpga_queue(card, dev, skb, NULL);
 486
 487        return 0;
 488}
 489
 490static ssize_t console_store(struct device *dev, struct device_attribute *attr,
 491                             const char *buf, size_t count)
 492{
 493        struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
 494        struct solos_card *card = atmdev->dev_data;
 495        int err;
 496
 497        err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
 498
 499        return err?:count;
 500}
 501
 502static DEVICE_ATTR(console, 0644, console_show, console_store);
 503
 504
 505#define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
 506#define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
 507
 508#include "solos-attrlist.c"
 509
 510#undef SOLOS_ATTR_RO
 511#undef SOLOS_ATTR_RW
 512
 513#define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
 514#define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
 515
 516static struct attribute *solos_attrs[] = {
 517#include "solos-attrlist.c"
 518        NULL
 519};
 520
 521static struct attribute_group solos_attr_group = {
 522        .attrs = solos_attrs,
 523        .name = "parameters",
 524};
 525
 526static int flash_upgrade(struct solos_card *card, int chip)
 527{
 528        const struct firmware *fw;
 529        const char *fw_name;
 530        int blocksize = 0;
 531        int numblocks = 0;
 532        int offset;
 533
 534        switch (chip) {
 535        case 0:
 536                fw_name = "solos-FPGA.bin";
 537                blocksize = FPGA_BLOCK;
 538                break;
 539        case 1:
 540                fw_name = "solos-Firmware.bin";
 541                blocksize = SOLOS_BLOCK;
 542                break;
 543        case 2:
 544                if (card->fpga_version > LEGACY_BUFFERS){
 545                        fw_name = "solos-db-FPGA.bin";
 546                        blocksize = FPGA_BLOCK;
 547                } else {
 548                        dev_info(&card->dev->dev, "FPGA version doesn't support"
 549                                        " daughter board upgrades\n");
 550                        return -EPERM;
 551                }
 552                break;
 553        case 3:
 554                if (card->fpga_version > LEGACY_BUFFERS){
 555                        fw_name = "solos-Firmware.bin";
 556                        blocksize = SOLOS_BLOCK;
 557                } else {
 558                        dev_info(&card->dev->dev, "FPGA version doesn't support"
 559                                        " daughter board upgrades\n");
 560                        return -EPERM;
 561                }
 562                break;
 563        default:
 564                return -ENODEV;
 565        }
 566
 567        if (request_firmware(&fw, fw_name, &card->dev->dev))
 568                return -ENOENT;
 569
 570        dev_info(&card->dev->dev, "Flash upgrade starting\n");
 571
 572        numblocks = fw->size / blocksize;
 573        dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
 574        dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
 575        
 576        dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
 577        iowrite32(1, card->config_regs + FPGA_MODE);
 578        (void) ioread32(card->config_regs + FPGA_MODE); 
 579
 580        /* Set mode to Chip Erase */
 581        if(chip == 0 || chip == 2)
 582                dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
 583        if(chip == 1 || chip == 3)
 584                dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
 585        iowrite32((chip * 2), card->config_regs + FLASH_MODE);
 586
 587
 588        iowrite32(1, card->config_regs + WRITE_FLASH);
 589        wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 590
 591        for (offset = 0; offset < fw->size; offset += blocksize) {
 592                int i;
 593
 594                /* Clear write flag */
 595                iowrite32(0, card->config_regs + WRITE_FLASH);
 596
 597                /* Set mode to Block Write */
 598                /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
 599                iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
 600
 601                /* Copy block to buffer, swapping each 16 bits */
 602                for(i = 0; i < blocksize; i += 4) {
 603                        uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i));
 604                        if(card->fpga_version > LEGACY_BUFFERS)
 605                                iowrite32(word, FLASH_BUF + i);
 606                        else
 607                                iowrite32(word, RX_BUF(card, 3) + i);
 608                }
 609
 610                /* Specify block number and then trigger flash write */
 611                iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
 612                iowrite32(1, card->config_regs + WRITE_FLASH);
 613                wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
 614        }
 615
 616        release_firmware(fw);
 617        iowrite32(0, card->config_regs + WRITE_FLASH);
 618        iowrite32(0, card->config_regs + FPGA_MODE);
 619        iowrite32(0, card->config_regs + FLASH_MODE);
 620        dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
 621        return 0;
 622}
 623
 624static irqreturn_t solos_irq(int irq, void *dev_id)
 625{
 626        struct solos_card *card = dev_id;
 627        int handled = 1;
 628
 629        iowrite32(0, card->config_regs + IRQ_CLEAR);
 630
 631        /* If we're up and running, just kick the tasklet to process TX/RX */
 632        if (card->atmdev[0])
 633                tasklet_schedule(&card->tlet);
 634        else
 635                wake_up(&card->fw_wq);
 636
 637        return IRQ_RETVAL(handled);
 638}
 639
 640void solos_bh(unsigned long card_arg)
 641{
 642        struct solos_card *card = (void *)card_arg;
 643        uint32_t card_flags;
 644        uint32_t rx_done = 0;
 645        int port;
 646
 647        /*
 648         * Since fpga_tx() is going to need to read the flags under its lock,
 649         * it can return them to us so that we don't have to hit PCI MMIO
 650         * again for the same information
 651         */
 652        card_flags = fpga_tx(card);
 653
 654        for (port = 0; port < card->nr_ports; port++) {
 655                if (card_flags & (0x10 << port)) {
 656                        struct pkt_hdr _hdr, *header;
 657                        struct sk_buff *skb;
 658                        struct atm_vcc *vcc;
 659                        int size;
 660
 661                        if (card->using_dma) {
 662                                skb = card->rx_skb[port];
 663                                card->rx_skb[port] = NULL;
 664
 665                                pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
 666                                                 RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
 667
 668                                header = (void *)skb->data;
 669                                size = le16_to_cpu(header->size);
 670                                skb_put(skb, size + sizeof(*header));
 671                                skb_pull(skb, sizeof(*header));
 672                        } else {
 673                                header = &_hdr;
 674
 675                                rx_done |= 0x10 << port;
 676
 677                                memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
 678
 679                                size = le16_to_cpu(header->size);
 680                                if (size > (card->buffer_size - sizeof(*header))){
 681                                        dev_warn(&card->dev->dev, "Invalid buffer size\n");
 682                                        continue;
 683                                }
 684
 685                                skb = alloc_skb(size + 1, GFP_ATOMIC);
 686                                if (!skb) {
 687                                        if (net_ratelimit())
 688                                                dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
 689                                        continue;
 690                                }
 691
 692                                memcpy_fromio(skb_put(skb, size),
 693                                              RX_BUF(card, port) + sizeof(*header),
 694                                              size);
 695                        }
 696                        if (atmdebug) {
 697                                dev_info(&card->dev->dev, "Received: port %d\n", port);
 698                                dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
 699                                         size, le16_to_cpu(header->vpi),
 700                                         le16_to_cpu(header->vci));
 701                                print_buffer(skb);
 702                        }
 703
 704                        switch (le16_to_cpu(header->type)) {
 705                        case PKT_DATA:
 706                                vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
 707                                               le16_to_cpu(header->vci));
 708                                if (!vcc) {
 709                                        if (net_ratelimit())
 710                                                dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
 711                                                         le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
 712                                                         port);
 713                                        continue;
 714                                }
 715                                atm_charge(vcc, skb->truesize);
 716                                vcc->push(vcc, skb);
 717                                atomic_inc(&vcc->stats->rx);
 718                                break;
 719
 720                        case PKT_STATUS:
 721                                if (process_status(card, port, skb) &&
 722                                    net_ratelimit()) {
 723                                        dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
 724                                        print_buffer(skb);
 725                                }
 726                                dev_kfree_skb_any(skb);
 727                                break;
 728
 729                        case PKT_COMMAND:
 730                        default: /* FIXME: Not really, surely? */
 731                                if (process_command(card, port, skb))
 732                                        break;
 733                                spin_lock(&card->cli_queue_lock);
 734                                if (skb_queue_len(&card->cli_queue[port]) > 10) {
 735                                        if (net_ratelimit())
 736                                                dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
 737                                                         port);
 738                                        dev_kfree_skb_any(skb);
 739                                } else
 740                                        skb_queue_tail(&card->cli_queue[port], skb);
 741                                spin_unlock(&card->cli_queue_lock);
 742                                break;
 743                        }
 744                }
 745                /* Allocate RX skbs for any ports which need them */
 746                if (card->using_dma && card->atmdev[port] &&
 747                    !card->rx_skb[port]) {
 748                        struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC);
 749                        if (skb) {
 750                                SKB_CB(skb)->dma_addr =
 751                                        pci_map_single(card->dev, skb->data,
 752                                                       RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
 753                                iowrite32(SKB_CB(skb)->dma_addr,
 754                                          card->config_regs + RX_DMA_ADDR(port));
 755                                card->rx_skb[port] = skb;
 756                        } else {
 757                                if (net_ratelimit())
 758                                        dev_warn(&card->dev->dev, "Failed to allocate RX skb");
 759
 760                                /* We'll have to try again later */
 761                                tasklet_schedule(&card->tlet);
 762                        }
 763                }
 764        }
 765        if (rx_done)
 766                iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
 767
 768        return;
 769}
 770
 771static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
 772{
 773        struct hlist_head *head;
 774        struct atm_vcc *vcc = NULL;
 775        struct hlist_node *node;
 776        struct sock *s;
 777
 778        read_lock(&vcc_sklist_lock);
 779        head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 780        sk_for_each(s, node, head) {
 781                vcc = atm_sk(s);
 782                if (vcc->dev == dev && vcc->vci == vci &&
 783                    vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
 784                    test_bit(ATM_VF_READY, &vcc->flags))
 785                        goto out;
 786        }
 787        vcc = NULL;
 788 out:
 789        read_unlock(&vcc_sklist_lock);
 790        return vcc;
 791}
 792
 793static int list_vccs(int vci)
 794{
 795        struct hlist_head *head;
 796        struct atm_vcc *vcc;
 797        struct hlist_node *node;
 798        struct sock *s;
 799        int num_found = 0;
 800        int i;
 801
 802        read_lock(&vcc_sklist_lock);
 803        if (vci != 0){
 804                head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
 805                sk_for_each(s, node, head) {
 806                        num_found ++;
 807                        vcc = atm_sk(s);
 808                        printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
 809                               vcc->dev->number,
 810                               vcc->vpi,
 811                               vcc->vci);
 812                }
 813        } else {
 814                for(i = 0; i < VCC_HTABLE_SIZE; i++){
 815                        head = &vcc_hash[i];
 816                        sk_for_each(s, node, head) {
 817                                num_found ++;
 818                                vcc = atm_sk(s);
 819                                printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
 820                                       vcc->dev->number,
 821                                       vcc->vpi,
 822                                       vcc->vci);
 823                        }
 824                }
 825        }
 826        read_unlock(&vcc_sklist_lock);
 827        return num_found;
 828}
 829
 830
 831static int popen(struct atm_vcc *vcc)
 832{
 833        struct solos_card *card = vcc->dev->dev_data;
 834        struct sk_buff *skb;
 835        struct pkt_hdr *header;
 836
 837        if (vcc->qos.aal != ATM_AAL5) {
 838                dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
 839                         vcc->qos.aal);
 840                return -EINVAL;
 841        }
 842
 843        skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
 844        if (!skb) {
 845                if (net_ratelimit())
 846                        dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
 847                return -ENOMEM;
 848        }
 849        header = (void *)skb_put(skb, sizeof(*header));
 850
 851        header->size = cpu_to_le16(0);
 852        header->vpi = cpu_to_le16(vcc->vpi);
 853        header->vci = cpu_to_le16(vcc->vci);
 854        header->type = cpu_to_le16(PKT_POPEN);
 855
 856        fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 857
 858        set_bit(ATM_VF_ADDR, &vcc->flags);
 859        set_bit(ATM_VF_READY, &vcc->flags);
 860        list_vccs(0);
 861
 862
 863        return 0;
 864}
 865
 866static void pclose(struct atm_vcc *vcc)
 867{
 868        struct solos_card *card = vcc->dev->dev_data;
 869        struct sk_buff *skb;
 870        struct pkt_hdr *header;
 871
 872        skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
 873        if (!skb) {
 874                dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
 875                return;
 876        }
 877        header = (void *)skb_put(skb, sizeof(*header));
 878
 879        header->size = cpu_to_le16(0);
 880        header->vpi = cpu_to_le16(vcc->vpi);
 881        header->vci = cpu_to_le16(vcc->vci);
 882        header->type = cpu_to_le16(PKT_PCLOSE);
 883
 884        fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
 885
 886        clear_bit(ATM_VF_ADDR, &vcc->flags);
 887        clear_bit(ATM_VF_READY, &vcc->flags);
 888
 889        /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
 890           tasklet has finished processing any incoming packets (and, more to
 891           the point, using the vcc pointer). */
 892        tasklet_unlock_wait(&card->tlet);
 893        return;
 894}
 895
 896static int print_buffer(struct sk_buff *buf)
 897{
 898        int len,i;
 899        char msg[500];
 900        char item[10];
 901
 902        len = buf->len;
 903        for (i = 0; i < len; i++){
 904                if(i % 8 == 0)
 905                        sprintf(msg, "%02X: ", i);
 906
 907                sprintf(item,"%02X ",*(buf->data + i));
 908                strcat(msg, item);
 909                if(i % 8 == 7) {
 910                        sprintf(item, "\n");
 911                        strcat(msg, item);
 912                        printk(KERN_DEBUG "%s", msg);
 913                }
 914        }
 915        if (i % 8 != 0) {
 916                sprintf(item, "\n");
 917                strcat(msg, item);
 918                printk(KERN_DEBUG "%s", msg);
 919        }
 920        printk(KERN_DEBUG "\n");
 921
 922        return 0;
 923}
 924
 925static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
 926                       struct atm_vcc *vcc)
 927{
 928        int old_len;
 929        unsigned long flags;
 930
 931        SKB_CB(skb)->vcc = vcc;
 932
 933        spin_lock_irqsave(&card->tx_queue_lock, flags);
 934        old_len = skb_queue_len(&card->tx_queue[port]);
 935        skb_queue_tail(&card->tx_queue[port], skb);
 936        if (!old_len)
 937                card->tx_mask |= (1 << port);
 938        spin_unlock_irqrestore(&card->tx_queue_lock, flags);
 939
 940        /* Theoretically we could just schedule the tasklet here, but
 941           that introduces latency we don't want -- it's noticeable */
 942        if (!old_len)
 943                fpga_tx(card);
 944}
 945
 946static uint32_t fpga_tx(struct solos_card *card)
 947{
 948        uint32_t tx_pending, card_flags;
 949        uint32_t tx_started = 0;
 950        struct sk_buff *skb;
 951        struct atm_vcc *vcc;
 952        unsigned char port;
 953        unsigned long flags;
 954
 955        spin_lock_irqsave(&card->tx_lock, flags);
 956        
 957        card_flags = ioread32(card->config_regs + FLAGS_ADDR);
 958        /*
 959         * The queue lock is required for _writing_ to tx_mask, but we're
 960         * OK to read it here without locking. The only potential update
 961         * that we could race with is in fpga_queue() where it sets a bit
 962         * for a new port... but it's going to call this function again if
 963         * it's doing that, anyway.
 964         */
 965        tx_pending = card->tx_mask & ~card_flags;
 966
 967        for (port = 0; tx_pending; tx_pending >>= 1, port++) {
 968                if (tx_pending & 1) {
 969                        struct sk_buff *oldskb = card->tx_skb[port];
 970                        if (oldskb)
 971                                pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr,
 972                                                 oldskb->len, PCI_DMA_TODEVICE);
 973
 974                        spin_lock(&card->tx_queue_lock);
 975                        skb = skb_dequeue(&card->tx_queue[port]);
 976                        if (!skb)
 977                                card->tx_mask &= ~(1 << port);
 978                        spin_unlock(&card->tx_queue_lock);
 979
 980                        if (skb && !card->using_dma) {
 981                                memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
 982                                tx_started |= 1 << port;
 983                                oldskb = skb; /* We're done with this skb already */
 984                        } else if (skb && card->using_dma) {
 985                                SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data,
 986                                                                       skb->len, PCI_DMA_TODEVICE);
 987                                card->tx_skb[port] = skb;
 988                                iowrite32(SKB_CB(skb)->dma_addr,
 989                                          card->config_regs + TX_DMA_ADDR(port));
 990                        }
 991
 992                        if (!oldskb)
 993                                continue;
 994
 995                        /* Clean up and free oldskb now it's gone */
 996                        if (atmdebug) {
 997                                struct pkt_hdr *header = (void *)oldskb->data;
 998                                int size = le16_to_cpu(header->size);
 999
1000                                skb_pull(oldskb, sizeof(*header));
1001                                dev_info(&card->dev->dev, "Transmitted: port %d\n",
1002                                         port);
1003                                dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
1004                                         size, le16_to_cpu(header->vpi),
1005                                         le16_to_cpu(header->vci));
1006                                print_buffer(oldskb);
1007                        }
1008
1009                        vcc = SKB_CB(oldskb)->vcc;
1010
1011                        if (vcc) {
1012                                atomic_inc(&vcc->stats->tx);
1013                                solos_pop(vcc, oldskb);
1014                        } else
1015                                dev_kfree_skb_irq(oldskb);
1016
1017                }
1018        }
1019        /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
1020        if (tx_started)
1021                iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1022
1023        spin_unlock_irqrestore(&card->tx_lock, flags);
1024        return card_flags;
1025}
1026
1027static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1028{
1029        struct solos_card *card = vcc->dev->dev_data;
1030        struct pkt_hdr *header;
1031        int pktlen;
1032
1033        pktlen = skb->len;
1034        if (pktlen > (BUF_SIZE - sizeof(*header))) {
1035                dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1036                solos_pop(vcc, skb);
1037                return 0;
1038        }
1039
1040        if (!skb_clone_writable(skb, sizeof(*header))) {
1041                int expand_by = 0;
1042                int ret;
1043
1044                if (skb_headroom(skb) < sizeof(*header))
1045                        expand_by = sizeof(*header) - skb_headroom(skb);
1046
1047                ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1048                if (ret) {
1049                        dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1050                        solos_pop(vcc, skb);
1051                        return ret;
1052                }
1053        }
1054
1055        header = (void *)skb_push(skb, sizeof(*header));
1056
1057        /* This does _not_ include the size of the header */
1058        header->size = cpu_to_le16(pktlen);
1059        header->vpi = cpu_to_le16(vcc->vpi);
1060        header->vci = cpu_to_le16(vcc->vci);
1061        header->type = cpu_to_le16(PKT_DATA);
1062
1063        fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1064
1065        return 0;
1066}
1067
1068static struct atmdev_ops fpga_ops = {
1069        .open =         popen,
1070        .close =        pclose,
1071        .ioctl =        NULL,
1072        .getsockopt =   NULL,
1073        .setsockopt =   NULL,
1074        .send =         psend,
1075        .send_oam =     NULL,
1076        .phy_put =      NULL,
1077        .phy_get =      NULL,
1078        .change_qos =   NULL,
1079        .proc_read =    NULL,
1080        .owner =        THIS_MODULE
1081};
1082
1083static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1084{
1085        int err;
1086        uint16_t fpga_ver;
1087        uint8_t major_ver, minor_ver;
1088        uint32_t data32;
1089        struct solos_card *card;
1090
1091        card = kzalloc(sizeof(*card), GFP_KERNEL);
1092        if (!card)
1093                return -ENOMEM;
1094
1095        card->dev = dev;
1096        init_waitqueue_head(&card->fw_wq);
1097        init_waitqueue_head(&card->param_wq);
1098
1099        err = pci_enable_device(dev);
1100        if (err) {
1101                dev_warn(&dev->dev,  "Failed to enable PCI device\n");
1102                goto out;
1103        }
1104
1105        err = pci_set_dma_mask(dev, DMA_BIT_MASK(32));
1106        if (err) {
1107                dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1108                goto out;
1109        }
1110
1111        err = pci_request_regions(dev, "solos");
1112        if (err) {
1113                dev_warn(&dev->dev, "Failed to request regions\n");
1114                goto out;
1115        }
1116
1117        card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1118        if (!card->config_regs) {
1119                dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1120                goto out_release_regions;
1121        }
1122        card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1123        if (!card->buffers) {
1124                dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1125                goto out_unmap_config;
1126        }
1127
1128        if (reset) {
1129                iowrite32(1, card->config_regs + FPGA_MODE);
1130                data32 = ioread32(card->config_regs + FPGA_MODE); 
1131
1132                iowrite32(0, card->config_regs + FPGA_MODE);
1133                data32 = ioread32(card->config_regs + FPGA_MODE); 
1134        }
1135
1136        data32 = ioread32(card->config_regs + FPGA_VER);
1137        fpga_ver = (data32 & 0x0000FFFF);
1138        major_ver = ((data32 & 0xFF000000) >> 24);
1139        minor_ver = ((data32 & 0x00FF0000) >> 16);
1140        card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1141        if (card->fpga_version > LEGACY_BUFFERS)
1142                card->buffer_size = BUF_SIZE;
1143        else
1144                card->buffer_size = OLD_BUF_SIZE;
1145        dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1146                 major_ver, minor_ver, fpga_ver);
1147
1148        if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade ||
1149                              db_fpga_upgrade || db_firmware_upgrade)) {
1150                dev_warn(&dev->dev,
1151                         "FPGA too old; cannot upgrade flash. Use JTAG.\n");
1152                fpga_upgrade = firmware_upgrade = 0;
1153                db_fpga_upgrade = db_firmware_upgrade = 0;
1154        }
1155
1156        if (card->fpga_version >= DMA_SUPPORTED) {
1157                pci_set_master(dev);
1158                card->using_dma = 1;
1159        } else {
1160                card->using_dma = 0;
1161                /* Set RX empty flag for all ports */
1162                iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1163        }
1164
1165        data32 = ioread32(card->config_regs + PORTS);
1166        card->nr_ports = (data32 & 0x000000FF);
1167
1168        pci_set_drvdata(dev, card);
1169
1170        tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1171        spin_lock_init(&card->tx_lock);
1172        spin_lock_init(&card->tx_queue_lock);
1173        spin_lock_init(&card->cli_queue_lock);
1174        spin_lock_init(&card->param_queue_lock);
1175        INIT_LIST_HEAD(&card->param_queue);
1176
1177        err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1178                          "solos-pci", card);
1179        if (err) {
1180                dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1181                goto out_unmap_both;
1182        }
1183
1184        iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1185
1186        if (fpga_upgrade)
1187                flash_upgrade(card, 0);
1188
1189        if (firmware_upgrade)
1190                flash_upgrade(card, 1);
1191
1192        if (db_fpga_upgrade)
1193                flash_upgrade(card, 2);
1194
1195        if (db_firmware_upgrade)
1196                flash_upgrade(card, 3);
1197
1198        err = atm_init(card, &dev->dev);
1199        if (err)
1200                goto out_free_irq;
1201
1202        return 0;
1203
1204 out_free_irq:
1205        iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1206        free_irq(dev->irq, card);
1207        tasklet_kill(&card->tlet);
1208        
1209 out_unmap_both:
1210        pci_set_drvdata(dev, NULL);
1211        pci_iounmap(dev, card->buffers);
1212 out_unmap_config:
1213        pci_iounmap(dev, card->config_regs);
1214 out_release_regions:
1215        pci_release_regions(dev);
1216 out:
1217        kfree(card);
1218        return err;
1219}
1220
1221static int atm_init(struct solos_card *card, struct device *parent)
1222{
1223        int i;
1224
1225        for (i = 0; i < card->nr_ports; i++) {
1226                struct sk_buff *skb;
1227                struct pkt_hdr *header;
1228
1229                skb_queue_head_init(&card->tx_queue[i]);
1230                skb_queue_head_init(&card->cli_queue[i]);
1231
1232                card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);
1233                if (!card->atmdev[i]) {
1234                        dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1235                        atm_remove(card);
1236                        return -ENODEV;
1237                }
1238                if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1239                        dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1240                if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1241                        dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1242
1243                dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1244
1245                card->atmdev[i]->ci_range.vpi_bits = 8;
1246                card->atmdev[i]->ci_range.vci_bits = 16;
1247                card->atmdev[i]->dev_data = card;
1248                card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1249                atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
1250
1251                skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
1252                if (!skb) {
1253                        dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1254                        continue;
1255                }
1256
1257                header = (void *)skb_put(skb, sizeof(*header));
1258
1259                header->size = cpu_to_le16(0);
1260                header->vpi = cpu_to_le16(0);
1261                header->vci = cpu_to_le16(0);
1262                header->type = cpu_to_le16(PKT_STATUS);
1263
1264                fpga_queue(card, i, skb, NULL);
1265        }
1266        return 0;
1267}
1268
1269static void atm_remove(struct solos_card *card)
1270{
1271        int i;
1272
1273        for (i = 0; i < card->nr_ports; i++) {
1274                if (card->atmdev[i]) {
1275                        struct sk_buff *skb;
1276
1277                        dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1278
1279                        sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1280                        atm_dev_deregister(card->atmdev[i]);
1281
1282                        skb = card->rx_skb[i];
1283                        if (skb) {
1284                                pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1285                                                 RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
1286                                dev_kfree_skb(skb);
1287                        }
1288                        skb = card->tx_skb[i];
1289                        if (skb) {
1290                                pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1291                                                 skb->len, PCI_DMA_TODEVICE);
1292                                dev_kfree_skb(skb);
1293                        }
1294                        while ((skb = skb_dequeue(&card->tx_queue[i])))
1295                                dev_kfree_skb(skb);
1296 
1297                }
1298        }
1299}
1300
1301static void fpga_remove(struct pci_dev *dev)
1302{
1303        struct solos_card *card = pci_get_drvdata(dev);
1304        
1305        /* Disable IRQs */
1306        iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1307
1308        /* Reset FPGA */
1309        iowrite32(1, card->config_regs + FPGA_MODE);
1310        (void)ioread32(card->config_regs + FPGA_MODE); 
1311
1312        atm_remove(card);
1313
1314        free_irq(dev->irq, card);
1315        tasklet_kill(&card->tlet);
1316
1317        /* Release device from reset */
1318        iowrite32(0, card->config_regs + FPGA_MODE);
1319        (void)ioread32(card->config_regs + FPGA_MODE); 
1320
1321        pci_iounmap(dev, card->buffers);
1322        pci_iounmap(dev, card->config_regs);
1323
1324        pci_release_regions(dev);
1325        pci_disable_device(dev);
1326
1327        pci_set_drvdata(dev, NULL);
1328        kfree(card);
1329}
1330
1331static struct pci_device_id fpga_pci_tbl[] __devinitdata = {
1332        { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1333        { 0, }
1334};
1335
1336MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1337
1338static struct pci_driver fpga_driver = {
1339        .name =         "solos",
1340        .id_table =     fpga_pci_tbl,
1341        .probe =        fpga_probe,
1342        .remove =       fpga_remove,
1343};
1344
1345
1346static int __init solos_pci_init(void)
1347{
1348        printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1349        return pci_register_driver(&fpga_driver);
1350}
1351
1352static void __exit solos_pci_exit(void)
1353{
1354        pci_unregister_driver(&fpga_driver);
1355        printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1356}
1357
1358module_init(solos_pci_init);
1359module_exit(solos_pci_exit);
1360
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.