drivers/bluetooth/dtl1_cs.c

   1 /*
   2  *
   3  *  A driver for Nokia Connectivity Card DTL-1 devices
   4  *
   5  *  Copyright (C) 2001-2002  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation;
  11  *
  12  *  Software distributed under the License is distributed on an "AS
  13  *  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  14  *  implied. See the License for the specific language governing
  15  *  rights and limitations under the License.
  16  *
  17  *  The initial developer of the original code is David A. Hinds
  18  *  <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  19  *  are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  20  *
  21  */
  22
  23 #include <linux/config.h>
  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/sched.h>
  31 #include <linux/delay.h>
  32 #include <linux/errno.h>
  33 #include <linux/ptrace.h>
  34 #include <linux/ioport.h>
  35 #include <linux/spinlock.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 <asm/system.h>
  42 #include <asm/bitops.h>
  43 #include <asm/io.h>
  44
  45 #include <pcmcia/version.h>
  46 #include <pcmcia/cs_types.h>
  47 #include <pcmcia/cs.h>
  48 #include <pcmcia/cistpl.h>
  49 #include <pcmcia/ciscode.h>
  50 #include <pcmcia/ds.h>
  51 #include <pcmcia/cisreg.h>
  52
  53 #include <net/bluetooth/bluetooth.h>
  54 #include <net/bluetooth/hci_core.h>
  55
  56
  57
  58 /* ======================== Module parameters ======================== */
  59
  60
  61 /* Bit map of interrupts to choose from */
  62 static u_int irq_mask = 0xffff;
  63 static int irq_list[4] = { -1 };
  64
  65 MODULE_PARM(irq_mask, "i");
  66 MODULE_PARM(irq_list, "1-4i");
  67
  68 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  69 MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1");
  70 MODULE_LICENSE("GPL");
  71
  72
  73
  74 /* ======================== Local structures ======================== */
  75
  76
  77 typedef struct dtl1_info_t {
  78         dev_link_t link;
  79         dev_node_t node;
  80
  81         struct hci_dev *hdev;
  82
  83         spinlock_t lock;                /* For serializing operations */
  84
  85         unsigned long flowmask;         /* HCI flow mask */
  86         int ri_latch;
  87
  88         struct sk_buff_head txq;
  89         unsigned long tx_state;
  90
  91         unsigned long rx_state;
  92         unsigned long rx_count;
  93         struct sk_buff *rx_skb;
  94 } dtl1_info_t;
  95
  96
  97 void dtl1_config(dev_link_t *link);
  98 void dtl1_release(dev_link_t *link);
  99 int dtl1_event(event_t event, int priority, event_callback_args_t *args);
 100
 101 static dev_info_t dev_info = "dtl1_cs";
 102
 103 dev_link_t *dtl1_attach(void);
 104 void dtl1_detach(dev_link_t *);
 105
 106 static dev_link_t *dev_list = NULL;
 107
 108
 109 /* Transmit states  */
 110 #define XMIT_SENDING  1
 111 #define XMIT_WAKEUP   2
 112 #define XMIT_WAITING  8
 113
 114 /* Receiver States */
 115 #define RECV_WAIT_NSH   0
 116 #define RECV_WAIT_DATA  1
 117
 118
 119 typedef struct {
 120         u8 type;
 121         u8 zero;
 122         u16 len;
 123 } __attribute__ ((packed)) nsh_t;       /* Nokia Specific Header */
 124
 125 #define NSHL  4                         /* Nokia Specific Header Length */
 126
 127
 128
 129 /* ======================== Interrupt handling ======================== */
 130
 131
 132 static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
 133 {
 134         int actual = 0;
 135
 136         /* Tx FIFO should be empty */
 137         if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
 138                 return 0;
 139
 140         /* Fill FIFO with current frame */
 141         while ((fifo_size-- > 0) && (actual < len)) {
 142                 /* Transmit next byte */
 143                 outb(buf[actual], iobase + UART_TX);
 144                 actual++;
 145         }
 146
 147         return actual;
 148 }
 149
 150
 151 static void dtl1_write_wakeup(dtl1_info_t *info)
 152 {
 153         if (!info) {
 154                 BT_ERR("Unknown device");
 155                 return;
 156         }
 157
 158         if (test_bit(XMIT_WAITING, &(info->tx_state))) {
 159                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 160                 return;
 161         }
 162
 163         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 164                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 165                 return;
 166         }
 167
 168         do {
 169                 register unsigned int iobase = info->link.io.BasePort1;
 170                 register struct sk_buff *skb;
 171                 register int len;
 172
 173                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 174
 175                 if (!(info->link.state & DEV_PRESENT))
 176                         return;
 177
 178                 if (!(skb = skb_dequeue(&(info->txq))))
 179                         break;
 180
 181                 /* Send frame */
 182                 len = dtl1_write(iobase, 32, skb->data, skb->len);
 183
 184                 if (len == skb->len) {
 185                         set_bit(XMIT_WAITING, &(info->tx_state));
 186                         kfree_skb(skb);
 187                 } else {
 188                         skb_pull(skb, len);
 189                         skb_queue_head(&(info->txq), skb);
 190                 }
 191
 192                 info->hdev->stat.byte_tx += len;
 193
 194         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 195
 196         clear_bit(XMIT_SENDING, &(info->tx_state));
 197 }
 198
 199
 200 static void dtl1_control(dtl1_info_t *info, struct sk_buff *skb)
 201 {
 202         u8 flowmask = *(u8 *)skb->data;
 203         int i;
 204
 205         printk(KERN_INFO "Bluetooth: Nokia control data =");
 206         for (i = 0; i < skb->len; i++) {
 207                 printk(" %02x", skb->data[i]);
 208         }
 209         printk("\n");
 210
 211         /* transition to active state */
 212         if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
 213                 clear_bit(XMIT_WAITING, &(info->tx_state));
 214                 dtl1_write_wakeup(info);
 215         }
 216
 217         info->flowmask = flowmask;
 218
 219         kfree_skb(skb);
 220 }
 221
 222
 223 static void dtl1_receive(dtl1_info_t *info)
 224 {
 225         unsigned int iobase;
 226         nsh_t *nsh;
 227         int boguscount = 0;
 228
 229         if (!info) {
 230                 BT_ERR("Unknown device");
 231                 return;
 232         }
 233
 234         iobase = info->link.io.BasePort1;
 235
 236         do {
 237                 info->hdev->stat.byte_rx++;
 238
 239                 /* Allocate packet */
 240                 if (info->rx_skb == NULL)
 241                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 242                                 BT_ERR("Can't allocate mem for new packet");
 243                                 info->rx_state = RECV_WAIT_NSH;
 244                                 info->rx_count = NSHL;
 245                                 return;
 246                         }
 247
 248                 *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
 249                 nsh = (nsh_t *)info->rx_skb->data;
 250
 251                 info->rx_count--;
 252
 253                 if (info->rx_count == 0) {
 254
 255                         switch (info->rx_state) {
 256                         case RECV_WAIT_NSH:
 257                                 info->rx_state = RECV_WAIT_DATA;
 258                                 info->rx_count = nsh->len + (nsh->len & 0x0001);
 259                                 break;
 260                         case RECV_WAIT_DATA:
 261                                 info->rx_skb->pkt_type = nsh->type;
 262
 263                                 /* remove PAD byte if it exists */
 264                                 if (nsh->len & 0x0001) {
 265                                         info->rx_skb->tail--;
 266                                         info->rx_skb->len--;
 267                                 }
 268
 269                                 /* remove NSH */
 270                                 skb_pull(info->rx_skb, NSHL);
 271
 272                                 switch (info->rx_skb->pkt_type) {
 273                                 case 0x80:
 274                                         /* control data for the Nokia Card */
 275                                         dtl1_control(info, info->rx_skb);
 276                                         break;
 277                                 case 0x82:
 278                                 case 0x83:
 279                                 case 0x84:
 280                                         /* send frame to the HCI layer */
 281                                         info->rx_skb->dev = (void *) info->hdev;
 282                                         info->rx_skb->pkt_type &= 0x0f;
 283                                         hci_recv_frame(info->rx_skb);
 284                                         break;
 285                                 default:
 286                                         /* unknown packet */
 287                                         BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type);
 288                                         kfree_skb(info->rx_skb);
 289                                         break;
 290                                 }
 291
 292                                 info->rx_state = RECV_WAIT_NSH;
 293                                 info->rx_count = NSHL;
 294                                 info->rx_skb = NULL;
 295                                 break;
 296                         }
 297
 298                 }
 299
 300                 /* Make sure we don't stay here too long */
 301                 if (boguscount++ > 32)
 302                         break;
 303
 304         } while (inb(iobase + UART_LSR) & UART_LSR_DR);
 305 }
 306
 307
 308 static irqreturn_t dtl1_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 309 {
 310         dtl1_info_t *info = dev_inst;
 311         unsigned int iobase;
 312         unsigned char msr;
 313         int boguscount = 0;
 314         int iir, lsr;
 315
 316         if (!info || !info->hdev) {
 317                 BT_ERR("Call of irq %d for unknown device", irq);
 318                 return IRQ_NONE;
 319         }
 320
 321         iobase = info->link.io.BasePort1;
 322
 323         spin_lock(&(info->lock));
 324
 325         iir = inb(iobase + UART_IIR) & UART_IIR_ID;
 326         while (iir) {
 327
 328                 /* Clear interrupt */
 329                 lsr = inb(iobase + UART_LSR);
 330
 331                 switch (iir) {
 332                 case UART_IIR_RLSI:
 333                         BT_ERR("RLSI");
 334                         break;
 335                 case UART_IIR_RDI:
 336                         /* Receive interrupt */
 337                         dtl1_receive(info);
 338                         break;
 339                 case UART_IIR_THRI:
 340                         if (lsr & UART_LSR_THRE) {
 341                                 /* Transmitter ready for data */
 342                                 dtl1_write_wakeup(info);
 343                         }
 344                         break;
 345                 default:
 346                         BT_ERR("Unhandled IIR=%#x", iir);
 347                         break;
 348                 }
 349
 350                 /* Make sure we don't stay here too long */
 351                 if (boguscount++ > 100)
 352                         break;
 353
 354                 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
 355
 356         }
 357
 358         msr = inb(iobase + UART_MSR);
 359
 360         if (info->ri_latch ^ (msr & UART_MSR_RI)) {
 361                 info->ri_latch = msr & UART_MSR_RI;
 362                 clear_bit(XMIT_WAITING, &(info->tx_state));
 363                 dtl1_write_wakeup(info);
 364         }
 365
 366         spin_unlock(&(info->lock));
 367
 368         return IRQ_HANDLED;
 369 }
 370
 371
 372
 373 /* ======================== HCI interface ======================== */
 374
 375
 376 static int dtl1_hci_open(struct hci_dev *hdev)
 377 {
 378         set_bit(HCI_RUNNING, &(hdev->flags));
 379
 380         return 0;
 381 }
 382
 383
 384 static int dtl1_hci_flush(struct hci_dev *hdev)
 385 {
 386         dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);
 387
 388         /* Drop TX queue */
 389         skb_queue_purge(&(info->txq));
 390
 391         return 0;
 392 }
 393
 394
 395 static int dtl1_hci_close(struct hci_dev *hdev)
 396 {
 397         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 398                 return 0;
 399
 400         dtl1_hci_flush(hdev);
 401
 402         return 0;
 403 }
 404
 405
 406 static int dtl1_hci_send_frame(struct sk_buff *skb)
 407 {
 408         dtl1_info_t *info;
 409         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 410         struct sk_buff *s;
 411         nsh_t nsh;
 412
 413         if (!hdev) {
 414                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 415                 return -ENODEV;
 416         }
 417
 418         info = (dtl1_info_t *)(hdev->driver_data);
 419
 420         switch (skb->pkt_type) {
 421         case HCI_COMMAND_PKT:
 422                 hdev->stat.cmd_tx++;
 423                 nsh.type = 0x81;
 424                 break;
 425         case HCI_ACLDATA_PKT:
 426                 hdev->stat.acl_tx++;
 427                 nsh.type = 0x82;
 428                 break;
 429         case HCI_SCODATA_PKT:
 430                 hdev->stat.sco_tx++;
 431                 nsh.type = 0x83;
 432                 break;
 433         };
 434
 435         nsh.zero = 0;
 436         nsh.len = skb->len;
 437
 438         s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
 439         skb_reserve(s, NSHL);
 440         memcpy(skb_put(s, skb->len), skb->data, skb->len);
 441         if (skb->len & 0x0001)
 442                 *skb_put(s, 1) = 0;     /* PAD */
 443
 444         /* Prepend skb with Nokia frame header and queue */
 445         memcpy(skb_push(s, NSHL), &nsh, NSHL);
 446         skb_queue_tail(&(info->txq), s);
 447
 448         dtl1_write_wakeup(info);
 449
 450         kfree_skb(skb);
 451
 452         return 0;
 453 }
 454
 455
 456 static void dtl1_hci_destruct(struct hci_dev *hdev)
 457 {
 458 }
 459
 460
 461 static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd,  unsigned long arg)
 462 {
 463         return -ENOIOCTLCMD;
 464 }
 465
 466
 467
 468 /* ======================== Card services HCI interaction ======================== */
 469
 470
 471 int dtl1_open(dtl1_info_t *info)
 472 {
 473         unsigned long flags;
 474         unsigned int iobase = info->link.io.BasePort1;
 475         struct hci_dev *hdev;
 476
 477         spin_lock_init(&(info->lock));
 478
 479         skb_queue_head_init(&(info->txq));
 480
 481         info->rx_state = RECV_WAIT_NSH;
 482         info->rx_count = NSHL;
 483         info->rx_skb = NULL;
 484
 485         set_bit(XMIT_WAITING, &(info->tx_state));
 486
 487         /* Initialize HCI device */
 488         hdev = hci_alloc_dev();
 489         if (!hdev) {
 490                 BT_ERR("Can't allocate HCI device");
 491                 return -ENOMEM;
 492         }
 493
 494         info->hdev = hdev;
 495
 496         hdev->type = HCI_PCCARD;
 497         hdev->driver_data = info;
 498
 499         hdev->open     = dtl1_hci_open;
 500         hdev->close    = dtl1_hci_close;
 501         hdev->flush    = dtl1_hci_flush;
 502         hdev->send     = dtl1_hci_send_frame;
 503         hdev->destruct = dtl1_hci_destruct;
 504         hdev->ioctl    = dtl1_hci_ioctl;
 505
 506         hdev->owner = THIS_MODULE;
 507
 508         spin_lock_irqsave(&(info->lock), flags);
 509
 510         /* Reset UART */
 511         outb(0, iobase + UART_MCR);
 512
 513         /* Turn off interrupts */
 514         outb(0, iobase + UART_IER);
 515
 516         /* Initialize UART */
 517         outb(UART_LCR_WLEN8, iobase + UART_LCR);        /* Reset DLAB */
 518         outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
 519
 520         info->ri_latch = inb(info->link.io.BasePort1 + UART_MSR) & UART_MSR_RI;
 521
 522         /* Turn on interrupts */
 523         outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
 524
 525         spin_unlock_irqrestore(&(info->lock), flags);
 526
 527         /* Timeout before it is safe to send the first HCI packet */
 528         msleep(2000);
 529
 530         /* Register HCI device */
 531         if (hci_register_dev(hdev) < 0) {
 532                 BT_ERR("Can't register HCI device");
 533                 info->hdev = NULL;
 534                 hci_free_dev(hdev);
 535                 return -ENODEV;
 536         }
 537
 538         return 0;
 539 }
 540
 541
 542 int dtl1_close(dtl1_info_t *info)
 543 {
 544         unsigned long flags;
 545         unsigned int iobase = info->link.io.BasePort1;
 546         struct hci_dev *hdev = info->hdev;
 547
 548         if (!hdev)
 549                 return -ENODEV;
 550
 551         dtl1_hci_close(hdev);
 552
 553         spin_lock_irqsave(&(info->lock), flags);
 554
 555         /* Reset UART */
 556         outb(0, iobase + UART_MCR);
 557
 558         /* Turn off interrupts */
 559         outb(0, iobase + UART_IER);
 560
 561         spin_unlock_irqrestore(&(info->lock), flags);
 562
 563         if (hci_unregister_dev(hdev) < 0)
 564                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 565
 566         hci_free_dev(hdev);
 567
 568         return 0;
 569 }
 570
 571 dev_link_t *dtl1_attach(void)
 572 {
 573         dtl1_info_t *info;
 574         client_reg_t client_reg;
 575         dev_link_t *link;
 576         int i, ret;
 577
 578         /* Create new info device */
 579         info = kmalloc(sizeof(*info), GFP_KERNEL);
 580         if (!info)
 581                 return NULL;
 582         memset(info, 0, sizeof(*info));
 583
 584         link = &info->link;
 585         link->priv = info;
 586
 587         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 588         link->io.NumPorts1 = 8;
 589         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 590         link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 591
 592         if (irq_list[0] == -1)
 593                 link->irq.IRQInfo2 = irq_mask;
 594         else
 595                 for (i = 0; i < 4; i++)
 596                         link->irq.IRQInfo2 |= 1 << irq_list[i];
 597
 598         link->irq.Handler = dtl1_interrupt;
 599         link->irq.Instance = info;
 600
 601         link->conf.Attributes = CONF_ENABLE_IRQ;
 602         link->conf.Vcc = 50;
 603         link->conf.IntType = INT_MEMORY_AND_IO;
 604
 605         /* Register with Card Services */
 606         link->next = dev_list;
 607         dev_list = link;
 608         client_reg.dev_info = &dev_info;
 609         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 610         client_reg.EventMask =
 611                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 612                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 613                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 614         client_reg.event_handler = &dtl1_event;
 615         client_reg.Version = 0x0210;
 616         client_reg.event_callback_args.client_data = link;
 617
 618         ret = pcmcia_register_client(&link->handle, &client_reg);
 619         if (ret != CS_SUCCESS) {
 620                 cs_error(link->handle, RegisterClient, ret);
 621                 dtl1_detach(link);
 622                 return NULL;
 623         }
 624
 625         return link;
 626 }
 627
 628
 629 void dtl1_detach(dev_link_t *link)
 630 {
 631         dtl1_info_t *info = link->priv;
 632         dev_link_t **linkp;
 633         int ret;
 634
 635         /* Locate device structure */
 636         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 637                 if (*linkp == link)
 638                         break;
 639
 640         if (*linkp == NULL)
 641                 return;
 642
 643         if (link->state & DEV_CONFIG)
 644                 dtl1_release(link);
 645
 646         if (link->handle) {
 647                 ret = pcmcia_deregister_client(link->handle);
 648                 if (ret != CS_SUCCESS)
 649                         cs_error(link->handle, DeregisterClient, ret);
 650         }
 651
 652         /* Unlink device structure, free bits */
 653         *linkp = link->next;
 654
 655         kfree(info);
 656 }
 657
 658 static int get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 659 {
 660         int i;
 661
 662         i = pcmcia_get_tuple_data(handle, tuple);
 663         if (i != CS_SUCCESS)
 664                 return i;
 665
 666         return pcmcia_parse_tuple(handle, tuple, parse);
 667 }
 668
 669 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 670 {
 671         if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS)
 672                 return CS_NO_MORE_ITEMS;
 673         return get_tuple(handle, tuple, parse);
 674 }
 675
 676 static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 677 {
 678         if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS)
 679                 return CS_NO_MORE_ITEMS;
 680         return get_tuple(handle, tuple, parse);
 681 }
 682
 683 void dtl1_config(dev_link_t *link)
 684 {
 685         client_handle_t handle = link->handle;
 686         dtl1_info_t *info = link->priv;
 687         tuple_t tuple;
 688         u_short buf[256];
 689         cisparse_t parse;
 690         cistpl_cftable_entry_t *cf = &parse.cftable_entry;
 691         config_info_t config;
 692         int i, last_ret, last_fn;
 693
 694         tuple.TupleData = (cisdata_t *)buf;
 695         tuple.TupleOffset = 0;
 696         tuple.TupleDataMax = 255;
 697         tuple.Attributes = 0;
 698
 699         /* Get configuration register information */
 700         tuple.DesiredTuple = CISTPL_CONFIG;
 701         last_ret = first_tuple(handle, &tuple, &parse);
 702         if (last_ret != CS_SUCCESS) {
 703                 last_fn = ParseTuple;
 704                 goto cs_failed;
 705         }
 706         link->conf.ConfigBase = parse.config.base;
 707         link->conf.Present = parse.config.rmask[0];
 708
 709         /* Configure card */
 710         link->state |= DEV_CONFIG;
 711         i = pcmcia_get_configuration_info(handle, &config);
 712         link->conf.Vcc = config.Vcc;
 713
 714         tuple.TupleData = (cisdata_t *)buf;
 715         tuple.TupleOffset = 0;
 716         tuple.TupleDataMax = 255;
 717         tuple.Attributes = 0;
 718         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 719
 720         /* Look for a generic full-sized window */
 721         link->io.NumPorts1 = 8;
 722         i = first_tuple(handle, &tuple, &parse);
 723         while (i != CS_NO_MORE_ITEMS) {
 724                 if ((i == CS_SUCCESS) && (cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
 725                         link->conf.ConfigIndex = cf->index;
 726                         link->io.BasePort1 = cf->io.win[0].base;
 727                         link->io.NumPorts1 = cf->io.win[0].len; /*yo */
 728                         link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
 729                         i = pcmcia_request_io(link->handle, &link->io);
 730                         if (i == CS_SUCCESS)
 731                                 break;
 732                 }
 733                 i = next_tuple(handle, &tuple, &parse);
 734         }
 735
 736         if (i != CS_SUCCESS) {
 737                 cs_error(link->handle, RequestIO, i);
 738                 goto failed;
 739         }
 740
 741         i = pcmcia_request_irq(link->handle, &link->irq);
 742         if (i != CS_SUCCESS) {
 743                 cs_error(link->handle, RequestIRQ, i);
 744                 link->irq.AssignedIRQ = 0;
 745         }
 746
 747         i = pcmcia_request_configuration(link->handle, &link->conf);
 748         if (i != CS_SUCCESS) {
 749                 cs_error(link->handle, RequestConfiguration, i);
 750                 goto failed;
 751         }
 752
 753         if (dtl1_open(info) != 0)
 754                 goto failed;
 755
 756         strcpy(info->node.dev_name, info->hdev->name);
 757         link->dev = &info->node;
 758         link->state &= ~DEV_CONFIG_PENDING;
 759
 760         return;
 761
 762 cs_failed:
 763         cs_error(link->handle, last_fn, last_ret);
 764
 765 failed:
 766         dtl1_release(link);
 767 }
 768
 769
 770 void dtl1_release(dev_link_t *link)
 771 {
 772         dtl1_info_t *info = link->priv;
 773
 774         if (link->state & DEV_PRESENT)
 775                 dtl1_close(info);
 776
 777         link->dev = NULL;
 778
 779         pcmcia_release_configuration(link->handle);
 780         pcmcia_release_io(link->handle, &link->io);
 781         pcmcia_release_irq(link->handle, &link->irq);
 782
 783         link->state &= ~DEV_CONFIG;
 784 }
 785
 786
 787 int dtl1_event(event_t event, int priority, event_callback_args_t *args)
 788 {
 789         dev_link_t *link = args->client_data;
 790         dtl1_info_t *info = link->priv;
 791
 792         switch (event) {
 793         case CS_EVENT_CARD_REMOVAL:
 794                 link->state &= ~DEV_PRESENT;
 795                 if (link->state & DEV_CONFIG) {
 796                         dtl1_close(info);
 797                         dtl1_release(link);
 798                 }
 799                 break;
 800         case CS_EVENT_CARD_INSERTION:
 801                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 802                 dtl1_config(link);
 803                 break;
 804         case CS_EVENT_PM_SUSPEND:
 805                 link->state |= DEV_SUSPEND;
 806                 /* Fall through... */
 807         case CS_EVENT_RESET_PHYSICAL:
 808                 if (link->state & DEV_CONFIG)
 809                         pcmcia_release_configuration(link->handle);
 810                 break;
 811         case CS_EVENT_PM_RESUME:
 812                 link->state &= ~DEV_SUSPEND;
 813                 /* Fall through... */
 814         case CS_EVENT_CARD_RESET:
 815                 if (DEV_OK(link))
 816                         pcmcia_request_configuration(link->handle, &link->conf);
 817                 break;
 818         }
 819
 820         return 0;
 821 }
 822
 823 static struct pcmcia_driver dtl1_driver = {
 824         .owner          = THIS_MODULE,
 825         .drv            = {
 826                 .name   = "dtl1_cs",
 827         },
 828         .attach         = dtl1_attach,
 829         .detach         = dtl1_detach,
 830 };
 831
 832 static int __init init_dtl1_cs(void)
 833 {
 834         return pcmcia_register_driver(&dtl1_driver);
 835 }
 836
 837
 838 static void __exit exit_dtl1_cs(void)
 839 {
 840         pcmcia_unregister_driver(&dtl1_driver);
 841
 842         /* XXX: this really needs to move into generic code.. */
 843         while (dev_list != NULL)
 844                 dtl1_detach(dev_list);
 845 }
 846
 847 module_init(init_dtl1_cs);
 848 module_exit(exit_dtl1_cs);