git.oblomov.eu Git - linux-2.6/blob - drivers/bluetooth/bt3c_cs.c

   1 /*
   2  *
   3  *  Driver for the 3Com Bluetooth PCMCIA card
   4  *
   5  *  Copyright (C) 2001-2002  Marcel Holtmann <marcel@holtmann.org>
   6  *                           Jose Orlando Pereira <jop@di.uminho.pt>
   7  *
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License version 2 as
  11  *  published by the Free Software Foundation;
  12  *
  13  *  Software distributed under the License is distributed on an "AS
  14  *  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  15  *  implied. See the License for the specific language governing
  16  *  rights and limitations under the License.
  17  *
  18  *  The initial developer of the original code is David A. Hinds
  19  *  <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  20  *  are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25
  26 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/slab.h>
  29 #include <linux/types.h>
  30 #include <linux/delay.h>
  31 #include <linux/errno.h>
  32 #include <linux/ptrace.h>
  33 #include <linux/ioport.h>
  34 #include <linux/spinlock.h>
  35 #include <linux/moduleparam.h>
  36
  37 #include <linux/skbuff.h>
  38 #include <linux/string.h>
  39 #include <linux/serial.h>
  40 #include <linux/serial_reg.h>
  41 #include <linux/bitops.h>
  42 #include <asm/system.h>
  43 #include <asm/io.h>
  44
  45 #include <linux/device.h>
  46 #include <linux/firmware.h>
  47
  48 #include <pcmcia/cs_types.h>
  49 #include <pcmcia/cs.h>
  50 #include <pcmcia/cistpl.h>
  51 #include <pcmcia/ciscode.h>
  52 #include <pcmcia/ds.h>
  53 #include <pcmcia/cisreg.h>
  54
  55 #include <net/bluetooth/bluetooth.h>
  56 #include <net/bluetooth/hci_core.h>
  57
  58
  59
  60 /* ======================== Module parameters ======================== */
  61
  62
  63 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  64 MODULE_DESCRIPTION("Bluetooth driver for the 3Com Bluetooth PCMCIA card");
  65 MODULE_LICENSE("GPL");
  66 MODULE_FIRMWARE("BT3CPCC.bin");
  67
  68
  69
  70 /* ======================== Local structures ======================== */
  71
  72
  73 typedef struct bt3c_info_t {
  74         struct pcmcia_device *p_dev;
  75         dev_node_t node;
  76
  77         struct hci_dev *hdev;
  78
  79         spinlock_t lock;                /* For serializing operations */
  80
  81         struct sk_buff_head txq;
  82         unsigned long tx_state;
  83
  84         unsigned long rx_state;
  85         unsigned long rx_count;
  86         struct sk_buff *rx_skb;
  87 } bt3c_info_t;
  88
  89
  90 static int bt3c_config(struct pcmcia_device *link);
  91 static void bt3c_release(struct pcmcia_device *link);
  92
  93 static void bt3c_detach(struct pcmcia_device *p_dev);
  94
  95
  96 /* Transmit states  */
  97 #define XMIT_SENDING  1
  98 #define XMIT_WAKEUP   2
  99 #define XMIT_WAITING  8
 100
 101 /* Receiver states */
 102 #define RECV_WAIT_PACKET_TYPE   0
 103 #define RECV_WAIT_EVENT_HEADER  1
 104 #define RECV_WAIT_ACL_HEADER    2
 105 #define RECV_WAIT_SCO_HEADER    3
 106 #define RECV_WAIT_DATA          4
 107
 108
 109
 110 /* ======================== Special I/O functions ======================== */
 111
 112
 113 #define DATA_L   0
 114 #define DATA_H   1
 115 #define ADDR_L   2
 116 #define ADDR_H   3
 117 #define CONTROL  4
 118
 119
 120 static inline void bt3c_address(unsigned int iobase, unsigned short addr)
 121 {
 122         outb(addr & 0xff, iobase + ADDR_L);
 123         outb((addr >> 8) & 0xff, iobase + ADDR_H);
 124 }
 125
 126
 127 static inline void bt3c_put(unsigned int iobase, unsigned short value)
 128 {
 129         outb(value & 0xff, iobase + DATA_L);
 130         outb((value >> 8) & 0xff, iobase + DATA_H);
 131 }
 132
 133
 134 static inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value)
 135 {
 136         bt3c_address(iobase, addr);
 137         bt3c_put(iobase, value);
 138 }
 139
 140
 141 static inline unsigned short bt3c_get(unsigned int iobase)
 142 {
 143         unsigned short value = inb(iobase + DATA_L);
 144
 145         value |= inb(iobase + DATA_H) << 8;
 146
 147         return value;
 148 }
 149
 150
 151 static inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr)
 152 {
 153         bt3c_address(iobase, addr);
 154
 155         return bt3c_get(iobase);
 156 }
 157
 158
 159
 160 /* ======================== Interrupt handling ======================== */
 161
 162
 163 static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
 164 {
 165         int actual = 0;
 166
 167         bt3c_address(iobase, 0x7080);
 168
 169         /* Fill FIFO with current frame */
 170         while (actual < len) {
 171                 /* Transmit next byte */
 172                 bt3c_put(iobase, buf[actual]);
 173                 actual++;
 174         }
 175
 176         bt3c_io_write(iobase, 0x7005, actual);
 177
 178         return actual;
 179 }
 180
 181
 182 static void bt3c_write_wakeup(bt3c_info_t *info)
 183 {
 184         if (!info) {
 185                 BT_ERR("Unknown device");
 186                 return;
 187         }
 188
 189         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state)))
 190                 return;
 191
 192         do {
 193                 register unsigned int iobase = info->p_dev->io.BasePort1;
 194                 register struct sk_buff *skb;
 195                 register int len;
 196
 197                 if (!pcmcia_dev_present(info->p_dev))
 198                         break;
 199
 200
 201                 if (!(skb = skb_dequeue(&(info->txq)))) {
 202                         clear_bit(XMIT_SENDING, &(info->tx_state));
 203                         break;
 204                 }
 205
 206                 /* Send frame */
 207                 len = bt3c_write(iobase, 256, skb->data, skb->len);
 208
 209                 if (len != skb->len) {
 210                         BT_ERR("Very strange");
 211                 }
 212
 213                 kfree_skb(skb);
 214
 215                 info->hdev->stat.byte_tx += len;
 216
 217         } while (0);
 218 }
 219
 220
 221 static void bt3c_receive(bt3c_info_t *info)
 222 {
 223         unsigned int iobase;
 224         int size = 0, avail;
 225
 226         if (!info) {
 227                 BT_ERR("Unknown device");
 228                 return;
 229         }
 230
 231         iobase = info->p_dev->io.BasePort1;
 232
 233         avail = bt3c_read(iobase, 0x7006);
 234         //printk("bt3c_cs: receiving %d bytes\n", avail);
 235
 236         bt3c_address(iobase, 0x7480);
 237         while (size < avail) {
 238                 size++;
 239                 info->hdev->stat.byte_rx++;
 240
 241                 /* Allocate packet */
 242                 if (info->rx_skb == NULL) {
 243                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 244                         info->rx_count = 0;
 245                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 246                                 BT_ERR("Can't allocate mem for new packet");
 247                                 return;
 248                         }
 249                 }
 250
 251
 252                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 253
 254                         info->rx_skb->dev = (void *) info->hdev;
 255                         bt_cb(info->rx_skb)->pkt_type = inb(iobase + DATA_L);
 256                         inb(iobase + DATA_H);
 257                         //printk("bt3c: PACKET_TYPE=%02x\n", bt_cb(info->rx_skb)->pkt_type);
 258
 259                         switch (bt_cb(info->rx_skb)->pkt_type) {
 260
 261                         case HCI_EVENT_PKT:
 262                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 263                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 264                                 break;
 265
 266                         case HCI_ACLDATA_PKT:
 267                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 268                                 info->rx_count = HCI_ACL_HDR_SIZE;
 269                                 break;
 270
 271                         case HCI_SCODATA_PKT:
 272                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 273                                 info->rx_count = HCI_SCO_HDR_SIZE;
 274                                 break;
 275
 276                         default:
 277                                 /* Unknown packet */
 278                                 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
 279                                 info->hdev->stat.err_rx++;
 280                                 clear_bit(HCI_RUNNING, &(info->hdev->flags));
 281
 282                                 kfree_skb(info->rx_skb);
 283                                 info->rx_skb = NULL;
 284                                 break;
 285
 286                         }
 287
 288                 } else {
 289
 290                         __u8 x = inb(iobase + DATA_L);
 291
 292                         *skb_put(info->rx_skb, 1) = x;
 293                         inb(iobase + DATA_H);
 294                         info->rx_count--;
 295
 296                         if (info->rx_count == 0) {
 297
 298                                 int dlen;
 299                                 struct hci_event_hdr *eh;
 300                                 struct hci_acl_hdr *ah;
 301                                 struct hci_sco_hdr *sh;
 302
 303                                 switch (info->rx_state) {
 304
 305                                 case RECV_WAIT_EVENT_HEADER:
 306                                         eh = hci_event_hdr(info->rx_skb);
 307                                         info->rx_state = RECV_WAIT_DATA;
 308                                         info->rx_count = eh->plen;
 309                                         break;
 310
 311                                 case RECV_WAIT_ACL_HEADER:
 312                                         ah = hci_acl_hdr(info->rx_skb);
 313                                         dlen = __le16_to_cpu(ah->dlen);
 314                                         info->rx_state = RECV_WAIT_DATA;
 315                                         info->rx_count = dlen;
 316                                         break;
 317
 318                                 case RECV_WAIT_SCO_HEADER:
 319                                         sh = hci_sco_hdr(info->rx_skb);
 320                                         info->rx_state = RECV_WAIT_DATA;
 321                                         info->rx_count = sh->dlen;
 322                                         break;
 323
 324                                 case RECV_WAIT_DATA:
 325                                         hci_recv_frame(info->rx_skb);
 326                                         info->rx_skb = NULL;
 327                                         break;
 328
 329                                 }
 330
 331                         }
 332
 333                 }
 334
 335         }
 336
 337         bt3c_io_write(iobase, 0x7006, 0x0000);
 338 }
 339
 340
 341 static irqreturn_t bt3c_interrupt(int irq, void *dev_inst)
 342 {
 343         bt3c_info_t *info = dev_inst;
 344         unsigned int iobase;
 345         int iir;
 346
 347         BUG_ON(!info->hdev);
 348
 349         iobase = info->p_dev->io.BasePort1;
 350
 351         spin_lock(&(info->lock));
 352
 353         iir = inb(iobase + CONTROL);
 354         if (iir & 0x80) {
 355                 int stat = bt3c_read(iobase, 0x7001);
 356
 357                 if ((stat & 0xff) == 0x7f) {
 358                         BT_ERR("Very strange (stat=0x%04x)", stat);
 359                 } else if ((stat & 0xff) != 0xff) {
 360                         if (stat & 0x0020) {
 361                                 int stat = bt3c_read(iobase, 0x7002) & 0x10;
 362                                 BT_INFO("%s: Antenna %s", info->hdev->name,
 363                                                         stat ? "out" : "in");
 364                         }
 365                         if (stat & 0x0001)
 366                                 bt3c_receive(info);
 367                         if (stat & 0x0002) {
 368                                 //BT_ERR("Ack (stat=0x%04x)", stat);
 369                                 clear_bit(XMIT_SENDING, &(info->tx_state));
 370                                 bt3c_write_wakeup(info);
 371                         }
 372
 373                         bt3c_io_write(iobase, 0x7001, 0x0000);
 374
 375                         outb(iir, iobase + CONTROL);
 376                 }
 377         }
 378
 379         spin_unlock(&(info->lock));
 380
 381         return IRQ_HANDLED;
 382 }
 383
 384
 385
 386 /* ======================== HCI interface ======================== */
 387
 388
 389 static int bt3c_hci_flush(struct hci_dev *hdev)
 390 {
 391         bt3c_info_t *info = (bt3c_info_t *)(hdev->driver_data);
 392
 393         /* Drop TX queue */
 394         skb_queue_purge(&(info->txq));
 395
 396         return 0;
 397 }
 398
 399
 400 static int bt3c_hci_open(struct hci_dev *hdev)
 401 {
 402         set_bit(HCI_RUNNING, &(hdev->flags));
 403
 404         return 0;
 405 }
 406
 407
 408 static int bt3c_hci_close(struct hci_dev *hdev)
 409 {
 410         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 411                 return 0;
 412
 413         bt3c_hci_flush(hdev);
 414
 415         return 0;
 416 }
 417
 418
 419 static int bt3c_hci_send_frame(struct sk_buff *skb)
 420 {
 421         bt3c_info_t *info;
 422         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 423         unsigned long flags;
 424
 425         if (!hdev) {
 426                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 427                 return -ENODEV;
 428         }
 429
 430         info = (bt3c_info_t *) (hdev->driver_data);
 431
 432         switch (bt_cb(skb)->pkt_type) {
 433         case HCI_COMMAND_PKT:
 434                 hdev->stat.cmd_tx++;
 435                 break;
 436         case HCI_ACLDATA_PKT:
 437                 hdev->stat.acl_tx++;
 438                 break;
 439         case HCI_SCODATA_PKT:
 440                 hdev->stat.sco_tx++;
 441                 break;
 442         };
 443
 444         /* Prepend skb with frame type */
 445         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 446         skb_queue_tail(&(info->txq), skb);
 447
 448         spin_lock_irqsave(&(info->lock), flags);
 449
 450         bt3c_write_wakeup(info);
 451
 452         spin_unlock_irqrestore(&(info->lock), flags);
 453
 454         return 0;
 455 }
 456
 457
 458 static void bt3c_hci_destruct(struct hci_dev *hdev)
 459 {
 460 }
 461
 462
 463 static int bt3c_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 464 {
 465         return -ENOIOCTLCMD;
 466 }
 467
 468
 469
 470 /* ======================== Card services HCI interaction ======================== */
 471
 472
 473 static int bt3c_load_firmware(bt3c_info_t *info, const unsigned char *firmware,
 474                               int count)
 475 {
 476         char *ptr = (char *) firmware;
 477         char b[9];
 478         unsigned int iobase, size, addr, fcs, tmp;
 479         int i, err = 0;
 480
 481         iobase = info->p_dev->io.BasePort1;
 482
 483         /* Reset */
 484         bt3c_io_write(iobase, 0x8040, 0x0404);
 485         bt3c_io_write(iobase, 0x8040, 0x0400);
 486
 487         udelay(1);
 488
 489         bt3c_io_write(iobase, 0x8040, 0x0404);
 490
 491         udelay(17);
 492
 493         /* Load */
 494         while (count) {
 495                 if (ptr[0] != 'S') {
 496                         BT_ERR("Bad address in firmware");
 497                         err = -EFAULT;
 498                         goto error;
 499                 }
 500
 501                 memset(b, 0, sizeof(b));
 502                 memcpy(b, ptr + 2, 2);
 503                 size = simple_strtol(b, NULL, 16);
 504
 505                 memset(b, 0, sizeof(b));
 506                 memcpy(b, ptr + 4, 8);
 507                 addr = simple_strtol(b, NULL, 16);
 508
 509                 memset(b, 0, sizeof(b));
 510                 memcpy(b, ptr + (size * 2) + 2, 2);
 511                 fcs = simple_strtol(b, NULL, 16);
 512
 513                 memset(b, 0, sizeof(b));
 514                 for (tmp = 0, i = 0; i < size; i++) {
 515                         memcpy(b, ptr + (i * 2) + 2, 2);
 516                         tmp += simple_strtol(b, NULL, 16);
 517                 }
 518
 519                 if (((tmp + fcs) & 0xff) != 0xff) {
 520                         BT_ERR("Checksum error in firmware");
 521                         err = -EILSEQ;
 522                         goto error;
 523                 }
 524
 525                 if (ptr[1] == '3') {
 526                         bt3c_address(iobase, addr);
 527
 528                         memset(b, 0, sizeof(b));
 529                         for (i = 0; i < (size - 4) / 2; i++) {
 530                                 memcpy(b, ptr + (i * 4) + 12, 4);
 531                                 tmp = simple_strtol(b, NULL, 16);
 532                                 bt3c_put(iobase, tmp);
 533                         }
 534                 }
 535
 536                 ptr   += (size * 2) + 6;
 537                 count -= (size * 2) + 6;
 538         }
 539
 540         udelay(17);
 541
 542         /* Boot */
 543         bt3c_address(iobase, 0x3000);
 544         outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL);
 545
 546 error:
 547         udelay(17);
 548
 549         /* Clear */
 550         bt3c_io_write(iobase, 0x7006, 0x0000);
 551         bt3c_io_write(iobase, 0x7005, 0x0000);
 552         bt3c_io_write(iobase, 0x7001, 0x0000);
 553
 554         return err;
 555 }
 556
 557
 558 static int bt3c_open(bt3c_info_t *info)
 559 {
 560         const struct firmware *firmware;
 561         struct hci_dev *hdev;
 562         int err;
 563
 564         spin_lock_init(&(info->lock));
 565
 566         skb_queue_head_init(&(info->txq));
 567
 568         info->rx_state = RECV_WAIT_PACKET_TYPE;
 569         info->rx_count = 0;
 570         info->rx_skb = NULL;
 571
 572         /* Initialize HCI device */
 573         hdev = hci_alloc_dev();
 574         if (!hdev) {
 575                 BT_ERR("Can't allocate HCI device");
 576                 return -ENOMEM;
 577         }
 578
 579         info->hdev = hdev;
 580
 581         hdev->type = HCI_PCCARD;
 582         hdev->driver_data = info;
 583         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 584
 585         hdev->open     = bt3c_hci_open;
 586         hdev->close    = bt3c_hci_close;
 587         hdev->flush    = bt3c_hci_flush;
 588         hdev->send     = bt3c_hci_send_frame;
 589         hdev->destruct = bt3c_hci_destruct;
 590         hdev->ioctl    = bt3c_hci_ioctl;
 591
 592         hdev->owner = THIS_MODULE;
 593
 594         /* Load firmware */
 595         err = request_firmware(&firmware, "BT3CPCC.bin", &info->p_dev->dev);
 596         if (err < 0) {
 597                 BT_ERR("Firmware request failed");
 598                 goto error;
 599         }
 600
 601         err = bt3c_load_firmware(info, firmware->data, firmware->size);
 602
 603         release_firmware(firmware);
 604
 605         if (err < 0) {
 606                 BT_ERR("Firmware loading failed");
 607                 goto error;
 608         }
 609
 610         /* Timeout before it is safe to send the first HCI packet */
 611         msleep(1000);
 612
 613         /* Register HCI device */
 614         err = hci_register_dev(hdev);
 615         if (err < 0) {
 616                 BT_ERR("Can't register HCI device");
 617                 goto error;
 618         }
 619
 620         return 0;
 621
 622 error:
 623         info->hdev = NULL;
 624         hci_free_dev(hdev);
 625         return err;
 626 }
 627
 628
 629 static int bt3c_close(bt3c_info_t *info)
 630 {
 631         struct hci_dev *hdev = info->hdev;
 632
 633         if (!hdev)
 634                 return -ENODEV;
 635
 636         bt3c_hci_close(hdev);
 637
 638         if (hci_unregister_dev(hdev) < 0)
 639                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 640
 641         hci_free_dev(hdev);
 642
 643         return 0;
 644 }
 645
 646 static int bt3c_probe(struct pcmcia_device *link)
 647 {
 648         bt3c_info_t *info;
 649
 650         /* Create new info device */
 651         info = kzalloc(sizeof(*info), GFP_KERNEL);
 652         if (!info)
 653                 return -ENOMEM;
 654
 655         info->p_dev = link;
 656         link->priv = info;
 657
 658         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 659         link->io.NumPorts1 = 8;
 660         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 661         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
 662
 663         link->irq.Handler = bt3c_interrupt;
 664         link->irq.Instance = info;
 665
 666         link->conf.Attributes = CONF_ENABLE_IRQ;
 667         link->conf.IntType = INT_MEMORY_AND_IO;
 668
 669         return bt3c_config(link);
 670 }
 671
 672
 673 static void bt3c_detach(struct pcmcia_device *link)
 674 {
 675         bt3c_info_t *info = link->priv;
 676
 677         bt3c_release(link);
 678         kfree(info);
 679 }
 680
 681 static int bt3c_check_config(struct pcmcia_device *p_dev,
 682                              cistpl_cftable_entry_t *cf,
 683                              cistpl_cftable_entry_t *dflt,
 684                              unsigned int vcc,
 685                              void *priv_data)
 686 {
 687         unsigned long try = (unsigned long) priv_data;
 688
 689         if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM))
 690                 p_dev->conf.Vpp = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000;
 691         if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) &&
 692             (cf->io.win[0].base != 0)) {
 693                 p_dev->io.BasePort1 = cf->io.win[0].base;
 694                 p_dev->io.IOAddrLines = (try == 0) ? 16 :
 695                         cf->io.flags & CISTPL_IO_LINES_MASK;
 696                 if (!pcmcia_request_io(p_dev, &p_dev->io))
 697                         return 0;
 698         }
 699         return -ENODEV;
 700 }
 701
 702 static int bt3c_check_config_notpicky(struct pcmcia_device *p_dev,
 703                                       cistpl_cftable_entry_t *cf,
 704                                       cistpl_cftable_entry_t *dflt,
 705                                       unsigned int vcc,
 706                                       void *priv_data)
 707 {
 708         static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
 709         int j;
 710
 711         if ((cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) {
 712                 for (j = 0; j < 5; j++) {
 713                         p_dev->io.BasePort1 = base[j];
 714                         p_dev->io.IOAddrLines = base[j] ? 16 : 3;
 715                         if (!pcmcia_request_io(p_dev, &p_dev->io))
 716                                 return 0;
 717                 }
 718         }
 719         return -ENODEV;
 720 }
 721
 722 static int bt3c_config(struct pcmcia_device *link)
 723 {
 724         bt3c_info_t *info = link->priv;
 725         int i;
 726         unsigned long try;
 727
 728         /* First pass: look for a config entry that looks normal.
 729            Two tries: without IO aliases, then with aliases */
 730         for (try = 0; try < 2; try++)
 731                 if (!pcmcia_loop_config(link, bt3c_check_config, (void *) try))
 732                         goto found_port;
 733
 734         /* Second pass: try to find an entry that isn't picky about
 735            its base address, then try to grab any standard serial port
 736            address, and finally try to get any free port. */
 737         if (!pcmcia_loop_config(link, bt3c_check_config_notpicky, NULL))
 738                 goto found_port;
 739
 740         BT_ERR("No usable port range found");
 741         cs_error(link, RequestIO, -ENODEV);
 742         goto failed;
 743
 744 found_port:
 745         i = pcmcia_request_irq(link, &link->irq);
 746         if (i != 0) {
 747                 cs_error(link, RequestIRQ, i);
 748                 link->irq.AssignedIRQ = 0;
 749         }
 750
 751         i = pcmcia_request_configuration(link, &link->conf);
 752         if (i != 0) {
 753                 cs_error(link, RequestConfiguration, i);
 754                 goto failed;
 755         }
 756
 757         if (bt3c_open(info) != 0)
 758                 goto failed;
 759
 760         strcpy(info->node.dev_name, info->hdev->name);
 761         link->dev_node = &info->node;
 762
 763         return 0;
 764
 765 failed:
 766         bt3c_release(link);
 767         return -ENODEV;
 768 }
 769
 770
 771 static void bt3c_release(struct pcmcia_device *link)
 772 {
 773         bt3c_info_t *info = link->priv;
 774
 775         bt3c_close(info);
 776
 777         pcmcia_disable_device(link);
 778 }
 779
 780
 781 static struct pcmcia_device_id bt3c_ids[] = {
 782         PCMCIA_DEVICE_PROD_ID13("3COM", "Bluetooth PC Card", 0xefce0a31, 0xd4ce9b02),
 783         PCMCIA_DEVICE_NULL
 784 };
 785 MODULE_DEVICE_TABLE(pcmcia, bt3c_ids);
 786
 787 static struct pcmcia_driver bt3c_driver = {
 788         .owner          = THIS_MODULE,
 789         .drv            = {
 790                 .name   = "bt3c_cs",
 791         },
 792         .probe          = bt3c_probe,
 793         .remove         = bt3c_detach,
 794         .id_table       = bt3c_ids,
 795 };
 796
 797 static int __init init_bt3c_cs(void)
 798 {
 799         return pcmcia_register_driver(&bt3c_driver);
 800 }
 801
 802
 803 static void __exit exit_bt3c_cs(void)
 804 {
 805         pcmcia_unregister_driver(&bt3c_driver);
 806 }
 807
 808 module_init(init_bt3c_cs);
 809 module_exit(exit_bt3c_cs);