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 #include <linux/moduleparam.h>
  37
  38 #include <linux/skbuff.h>
  39 #include <linux/string.h>
  40 #include <linux/serial.h>
  41 #include <linux/serial_reg.h>
  42 #include <linux/bitops.h>
  43 #include <asm/system.h>
  44 #include <asm/io.h>
  45
  46 #include <pcmcia/version.h>
  47 #include <pcmcia/cs_types.h>
  48 #include <pcmcia/cs.h>
  49 #include <pcmcia/cistpl.h>
  50 #include <pcmcia/ciscode.h>
  51 #include <pcmcia/ds.h>
  52 #include <pcmcia/cisreg.h>
  53
  54 #include <net/bluetooth/bluetooth.h>
  55 #include <net/bluetooth/hci_core.h>
  56
  57
  58
  59 /* ======================== Module parameters ======================== */
  60
  61
  62 /* Bit map of interrupts to choose from */
  63 static unsigned int irq_mask = 0xffff;
  64 static int irq_list[4] = { -1 };
  65
  66 module_param(irq_mask, uint, 0);
  67 module_param_array(irq_list, int, NULL, 0);
  68
  69 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  70 MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1");
  71 MODULE_LICENSE("GPL");
  72
  73
  74
  75 /* ======================== Local structures ======================== */
  76
  77
  78 typedef struct dtl1_info_t {
  79         dev_link_t link;
  80         dev_node_t node;
  81
  82         struct hci_dev *hdev;
  83
  84         spinlock_t lock;                /* For serializing operations */
  85
  86         unsigned long flowmask;         /* HCI flow mask */
  87         int ri_latch;
  88
  89         struct sk_buff_head txq;
  90         unsigned long tx_state;
  91
  92         unsigned long rx_state;
  93         unsigned long rx_count;
  94         struct sk_buff *rx_skb;
  95 } dtl1_info_t;
  96
  97
  98 static void dtl1_config(dev_link_t *link);
  99 static void dtl1_release(dev_link_t *link);
 100 static int dtl1_event(event_t event, int priority, event_callback_args_t *args);
 101
 102 static dev_info_t dev_info = "dtl1_cs";
 103
 104 static dev_link_t *dtl1_attach(void);
 105 static void dtl1_detach(dev_link_t *);
 106
 107 static dev_link_t *dev_list = NULL;
 108
 109
 110 /* Transmit states  */
 111 #define XMIT_SENDING  1
 112 #define XMIT_WAKEUP   2
 113 #define XMIT_WAITING  8
 114
 115 /* Receiver States */
 116 #define RECV_WAIT_NSH   0
 117 #define RECV_WAIT_DATA  1
 118
 119
 120 typedef struct {
 121         u8 type;
 122         u8 zero;
 123         u16 len;
 124 } __attribute__ ((packed)) nsh_t;       /* Nokia Specific Header */
 125
 126 #define NSHL  4                         /* Nokia Specific Header Length */
 127
 128
 129
 130 /* ======================== Interrupt handling ======================== */
 131
 132
 133 static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
 134 {
 135         int actual = 0;
 136
 137         /* Tx FIFO should be empty */
 138         if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
 139                 return 0;
 140
 141         /* Fill FIFO with current frame */
 142         while ((fifo_size-- > 0) && (actual < len)) {
 143                 /* Transmit next byte */
 144                 outb(buf[actual], iobase + UART_TX);
 145                 actual++;
 146         }
 147
 148         return actual;
 149 }
 150
 151
 152 static void dtl1_write_wakeup(dtl1_info_t *info)
 153 {
 154         if (!info) {
 155                 BT_ERR("Unknown device");
 156                 return;
 157         }
 158
 159         if (test_bit(XMIT_WAITING, &(info->tx_state))) {
 160                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 161                 return;
 162         }
 163
 164         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 165                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 166                 return;
 167         }
 168
 169         do {
 170                 register unsigned int iobase = info->link.io.BasePort1;
 171                 register struct sk_buff *skb;
 172                 register int len;
 173
 174                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 175
 176                 if (!(info->link.state & DEV_PRESENT))
 177                         return;
 178
 179                 if (!(skb = skb_dequeue(&(info->txq))))
 180                         break;
 181
 182                 /* Send frame */
 183                 len = dtl1_write(iobase, 32, skb->data, skb->len);
 184
 185                 if (len == skb->len) {
 186                         set_bit(XMIT_WAITING, &(info->tx_state));
 187                         kfree_skb(skb);
 188                 } else {
 189                         skb_pull(skb, len);
 190                         skb_queue_head(&(info->txq), skb);
 191                 }
 192
 193                 info->hdev->stat.byte_tx += len;
 194
 195         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 196
 197         clear_bit(XMIT_SENDING, &(info->tx_state));
 198 }
 199
 200
 201 static void dtl1_control(dtl1_info_t *info, struct sk_buff *skb)
 202 {
 203         u8 flowmask = *(u8 *)skb->data;
 204         int i;
 205
 206         printk(KERN_INFO "Bluetooth: Nokia control data =");
 207         for (i = 0; i < skb->len; i++) {
 208                 printk(" %02x", skb->data[i]);
 209         }
 210         printk("\n");
 211
 212         /* transition to active state */
 213         if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
 214                 clear_bit(XMIT_WAITING, &(info->tx_state));
 215                 dtl1_write_wakeup(info);
 216         }
 217
 218         info->flowmask = flowmask;
 219
 220         kfree_skb(skb);
 221 }
 222
 223
 224 static void dtl1_receive(dtl1_info_t *info)
 225 {
 226         unsigned int iobase;
 227         nsh_t *nsh;
 228         int boguscount = 0;
 229
 230         if (!info) {
 231                 BT_ERR("Unknown device");
 232                 return;
 233         }
 234
 235         iobase = info->link.io.BasePort1;
 236
 237         do {
 238                 info->hdev->stat.byte_rx++;
 239
 240                 /* Allocate packet */
 241                 if (info->rx_skb == NULL)
 242                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 243                                 BT_ERR("Can't allocate mem for new packet");
 244                                 info->rx_state = RECV_WAIT_NSH;
 245                                 info->rx_count = NSHL;
 246                                 return;
 247                         }
 248
 249                 *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
 250                 nsh = (nsh_t *)info->rx_skb->data;
 251
 252                 info->rx_count--;
 253
 254                 if (info->rx_count == 0) {
 255
 256                         switch (info->rx_state) {
 257                         case RECV_WAIT_NSH:
 258                                 info->rx_state = RECV_WAIT_DATA;
 259                                 info->rx_count = nsh->len + (nsh->len & 0x0001);
 260                                 break;
 261                         case RECV_WAIT_DATA:
 262                                 info->rx_skb->pkt_type = nsh->type;
 263
 264                                 /* remove PAD byte if it exists */
 265                                 if (nsh->len & 0x0001) {
 266                                         info->rx_skb->tail--;
 267                                         info->rx_skb->len--;
 268                                 }
 269
 270                                 /* remove NSH */
 271                                 skb_pull(info->rx_skb, NSHL);
 272
 273                                 switch (info->rx_skb->pkt_type) {
 274                                 case 0x80:
 275                                         /* control data for the Nokia Card */
 276                                         dtl1_control(info, info->rx_skb);
 277                                         break;
 278                                 case 0x82:
 279                                 case 0x83:
 280                                 case 0x84:
 281                                         /* send frame to the HCI layer */
 282                                         info->rx_skb->dev = (void *) info->hdev;
 283                                         info->rx_skb->pkt_type &= 0x0f;
 284                                         hci_recv_frame(info->rx_skb);
 285                                         break;
 286                                 default:
 287                                         /* unknown packet */
 288                                         BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type);
 289                                         kfree_skb(info->rx_skb);
 290                                         break;
 291                                 }
 292
 293                                 info->rx_state = RECV_WAIT_NSH;
 294                                 info->rx_count = NSHL;
 295                                 info->rx_skb = NULL;
 296                                 break;
 297                         }
 298
 299                 }
 300
 301                 /* Make sure we don't stay here too long */
 302                 if (boguscount++ > 32)
 303                         break;
 304
 305         } while (inb(iobase + UART_LSR) & UART_LSR_DR);
 306 }
 307
 308
 309 static irqreturn_t dtl1_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 310 {
 311         dtl1_info_t *info = dev_inst;
 312         unsigned int iobase;
 313         unsigned char msr;
 314         int boguscount = 0;
 315         int iir, lsr;
 316
 317         if (!info || !info->hdev) {
 318                 BT_ERR("Call of irq %d for unknown device", irq);
 319                 return IRQ_NONE;
 320         }
 321
 322         iobase = info->link.io.BasePort1;
 323
 324         spin_lock(&(info->lock));
 325
 326         iir = inb(iobase + UART_IIR) & UART_IIR_ID;
 327         while (iir) {
 328
 329                 /* Clear interrupt */
 330                 lsr = inb(iobase + UART_LSR);
 331
 332                 switch (iir) {
 333                 case UART_IIR_RLSI:
 334                         BT_ERR("RLSI");
 335                         break;
 336                 case UART_IIR_RDI:
 337                         /* Receive interrupt */
 338                         dtl1_receive(info);
 339                         break;
 340                 case UART_IIR_THRI:
 341                         if (lsr & UART_LSR_THRE) {
 342                                 /* Transmitter ready for data */
 343                                 dtl1_write_wakeup(info);
 344                         }
 345                         break;
 346                 default:
 347                         BT_ERR("Unhandled IIR=%#x", iir);
 348                         break;
 349                 }
 350
 351                 /* Make sure we don't stay here too long */
 352                 if (boguscount++ > 100)
 353                         break;
 354
 355                 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
 356
 357         }
 358
 359         msr = inb(iobase + UART_MSR);
 360
 361         if (info->ri_latch ^ (msr & UART_MSR_RI)) {
 362                 info->ri_latch = msr & UART_MSR_RI;
 363                 clear_bit(XMIT_WAITING, &(info->tx_state));
 364                 dtl1_write_wakeup(info);
 365         }
 366
 367         spin_unlock(&(info->lock));
 368
 369         return IRQ_HANDLED;
 370 }
 371
 372
 373
 374 /* ======================== HCI interface ======================== */
 375
 376
 377 static int dtl1_hci_open(struct hci_dev *hdev)
 378 {
 379         set_bit(HCI_RUNNING, &(hdev->flags));
 380
 381         return 0;
 382 }
 383
 384
 385 static int dtl1_hci_flush(struct hci_dev *hdev)
 386 {
 387         dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);
 388
 389         /* Drop TX queue */
 390         skb_queue_purge(&(info->txq));
 391
 392         return 0;
 393 }
 394
 395
 396 static int dtl1_hci_close(struct hci_dev *hdev)
 397 {
 398         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 399                 return 0;
 400
 401         dtl1_hci_flush(hdev);
 402
 403         return 0;
 404 }
 405
 406
 407 static int dtl1_hci_send_frame(struct sk_buff *skb)
 408 {
 409         dtl1_info_t *info;
 410         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 411         struct sk_buff *s;
 412         nsh_t nsh;
 413
 414         if (!hdev) {
 415                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 416                 return -ENODEV;
 417         }
 418
 419         info = (dtl1_info_t *)(hdev->driver_data);
 420
 421         switch (skb->pkt_type) {
 422         case HCI_COMMAND_PKT:
 423                 hdev->stat.cmd_tx++;
 424                 nsh.type = 0x81;
 425                 break;
 426         case HCI_ACLDATA_PKT:
 427                 hdev->stat.acl_tx++;
 428                 nsh.type = 0x82;
 429                 break;
 430         case HCI_SCODATA_PKT:
 431                 hdev->stat.sco_tx++;
 432                 nsh.type = 0x83;
 433                 break;
 434         };
 435
 436         nsh.zero = 0;
 437         nsh.len = skb->len;
 438
 439         s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
 440         skb_reserve(s, NSHL);
 441         memcpy(skb_put(s, skb->len), skb->data, skb->len);
 442         if (skb->len & 0x0001)
 443                 *skb_put(s, 1) = 0;     /* PAD */
 444
 445         /* Prepend skb with Nokia frame header and queue */
 446         memcpy(skb_push(s, NSHL), &nsh, NSHL);
 447         skb_queue_tail(&(info->txq), s);
 448
 449         dtl1_write_wakeup(info);
 450
 451         kfree_skb(skb);
 452
 453         return 0;
 454 }
 455
 456
 457 static void dtl1_hci_destruct(struct hci_dev *hdev)
 458 {
 459 }
 460
 461
 462 static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd,  unsigned long arg)
 463 {
 464         return -ENOIOCTLCMD;
 465 }
 466
 467
 468
 469 /* ======================== Card services HCI interaction ======================== */
 470
 471
 472 static int dtl1_open(dtl1_info_t *info)
 473 {
 474         unsigned long flags;
 475         unsigned int iobase = info->link.io.BasePort1;
 476         struct hci_dev *hdev;
 477
 478         spin_lock_init(&(info->lock));
 479
 480         skb_queue_head_init(&(info->txq));
 481
 482         info->rx_state = RECV_WAIT_NSH;
 483         info->rx_count = NSHL;
 484         info->rx_skb = NULL;
 485
 486         set_bit(XMIT_WAITING, &(info->tx_state));
 487
 488         /* Initialize HCI device */
 489         hdev = hci_alloc_dev();
 490         if (!hdev) {
 491                 BT_ERR("Can't allocate HCI device");
 492                 return -ENOMEM;
 493         }
 494
 495         info->hdev = hdev;
 496
 497         hdev->type = HCI_PCCARD;
 498         hdev->driver_data = info;
 499
 500         hdev->open     = dtl1_hci_open;
 501         hdev->close    = dtl1_hci_close;
 502         hdev->flush    = dtl1_hci_flush;
 503         hdev->send     = dtl1_hci_send_frame;
 504         hdev->destruct = dtl1_hci_destruct;
 505         hdev->ioctl    = dtl1_hci_ioctl;
 506
 507         hdev->owner = THIS_MODULE;
 508
 509         spin_lock_irqsave(&(info->lock), flags);
 510
 511         /* Reset UART */
 512         outb(0, iobase + UART_MCR);
 513
 514         /* Turn off interrupts */
 515         outb(0, iobase + UART_IER);
 516
 517         /* Initialize UART */
 518         outb(UART_LCR_WLEN8, iobase + UART_LCR);        /* Reset DLAB */
 519         outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
 520
 521         info->ri_latch = inb(info->link.io.BasePort1 + UART_MSR) & UART_MSR_RI;
 522
 523         /* Turn on interrupts */
 524         outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
 525
 526         spin_unlock_irqrestore(&(info->lock), flags);
 527
 528         /* Timeout before it is safe to send the first HCI packet */
 529         msleep(2000);
 530
 531         /* Register HCI device */
 532         if (hci_register_dev(hdev) < 0) {
 533                 BT_ERR("Can't register HCI device");
 534                 info->hdev = NULL;
 535                 hci_free_dev(hdev);
 536                 return -ENODEV;
 537         }
 538
 539         return 0;
 540 }
 541
 542
 543 static int dtl1_close(dtl1_info_t *info)
 544 {
 545         unsigned long flags;
 546         unsigned int iobase = info->link.io.BasePort1;
 547         struct hci_dev *hdev = info->hdev;
 548
 549         if (!hdev)
 550                 return -ENODEV;
 551
 552         dtl1_hci_close(hdev);
 553
 554         spin_lock_irqsave(&(info->lock), flags);
 555
 556         /* Reset UART */
 557         outb(0, iobase + UART_MCR);
 558
 559         /* Turn off interrupts */
 560         outb(0, iobase + UART_IER);
 561
 562         spin_unlock_irqrestore(&(info->lock), flags);
 563
 564         if (hci_unregister_dev(hdev) < 0)
 565                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 566
 567         hci_free_dev(hdev);
 568
 569         return 0;
 570 }
 571
 572 static dev_link_t *dtl1_attach(void)
 573 {
 574         dtl1_info_t *info;
 575         client_reg_t client_reg;
 576         dev_link_t *link;
 577         int i, ret;
 578
 579         /* Create new info device */
 580         info = kmalloc(sizeof(*info), GFP_KERNEL);
 581         if (!info)
 582                 return NULL;
 583         memset(info, 0, sizeof(*info));
 584
 585         link = &info->link;
 586         link->priv = info;
 587
 588         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 589         link->io.NumPorts1 = 8;
 590         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 591         link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 592
 593         if (irq_list[0] == -1)
 594                 link->irq.IRQInfo2 = irq_mask;
 595         else
 596                 for (i = 0; i < 4; i++)
 597                         link->irq.IRQInfo2 |= 1 << irq_list[i];
 598
 599         link->irq.Handler = dtl1_interrupt;
 600         link->irq.Instance = info;
 601
 602         link->conf.Attributes = CONF_ENABLE_IRQ;
 603         link->conf.Vcc = 50;
 604         link->conf.IntType = INT_MEMORY_AND_IO;
 605
 606         /* Register with Card Services */
 607         link->next = dev_list;
 608         dev_list = link;
 609         client_reg.dev_info = &dev_info;
 610         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 611         client_reg.EventMask =
 612                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 613                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 614                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 615         client_reg.event_handler = &dtl1_event;
 616         client_reg.Version = 0x0210;
 617         client_reg.event_callback_args.client_data = link;
 618
 619         ret = pcmcia_register_client(&link->handle, &client_reg);
 620         if (ret != CS_SUCCESS) {
 621                 cs_error(link->handle, RegisterClient, ret);
 622                 dtl1_detach(link);
 623                 return NULL;
 624         }
 625
 626         return link;
 627 }
 628
 629
 630 static void dtl1_detach(dev_link_t *link)
 631 {
 632         dtl1_info_t *info = link->priv;
 633         dev_link_t **linkp;
 634         int ret;
 635
 636         /* Locate device structure */
 637         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 638                 if (*linkp == link)
 639                         break;
 640
 641         if (*linkp == NULL)
 642                 return;
 643
 644         if (link->state & DEV_CONFIG)
 645                 dtl1_release(link);
 646
 647         if (link->handle) {
 648                 ret = pcmcia_deregister_client(link->handle);
 649                 if (ret != CS_SUCCESS)
 650                         cs_error(link->handle, DeregisterClient, ret);
 651         }
 652
 653         /* Unlink device structure, free bits */
 654         *linkp = link->next;
 655
 656         kfree(info);
 657 }
 658
 659 static int get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 660 {
 661         int i;
 662
 663         i = pcmcia_get_tuple_data(handle, tuple);
 664         if (i != CS_SUCCESS)
 665                 return i;
 666
 667         return pcmcia_parse_tuple(handle, tuple, parse);
 668 }
 669
 670 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 671 {
 672         if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS)
 673                 return CS_NO_MORE_ITEMS;
 674         return get_tuple(handle, tuple, parse);
 675 }
 676
 677 static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 678 {
 679         if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS)
 680                 return CS_NO_MORE_ITEMS;
 681         return get_tuple(handle, tuple, parse);
 682 }
 683
 684 static void dtl1_config(dev_link_t *link)
 685 {
 686         client_handle_t handle = link->handle;
 687         dtl1_info_t *info = link->priv;
 688         tuple_t tuple;
 689         u_short buf[256];
 690         cisparse_t parse;
 691         cistpl_cftable_entry_t *cf = &parse.cftable_entry;
 692         config_info_t config;
 693         int i, last_ret, last_fn;
 694
 695         tuple.TupleData = (cisdata_t *)buf;
 696         tuple.TupleOffset = 0;
 697         tuple.TupleDataMax = 255;
 698         tuple.Attributes = 0;
 699
 700         /* Get configuration register information */
 701         tuple.DesiredTuple = CISTPL_CONFIG;
 702         last_ret = first_tuple(handle, &tuple, &parse);
 703         if (last_ret != CS_SUCCESS) {
 704                 last_fn = ParseTuple;
 705                 goto cs_failed;
 706         }
 707         link->conf.ConfigBase = parse.config.base;
 708         link->conf.Present = parse.config.rmask[0];
 709
 710         /* Configure card */
 711         link->state |= DEV_CONFIG;
 712         i = pcmcia_get_configuration_info(handle, &config);
 713         link->conf.Vcc = config.Vcc;
 714
 715         tuple.TupleData = (cisdata_t *)buf;
 716         tuple.TupleOffset = 0;
 717         tuple.TupleDataMax = 255;
 718         tuple.Attributes = 0;
 719         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 720
 721         /* Look for a generic full-sized window */
 722         link->io.NumPorts1 = 8;
 723         i = first_tuple(handle, &tuple, &parse);
 724         while (i != CS_NO_MORE_ITEMS) {
 725                 if ((i == CS_SUCCESS) && (cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
 726                         link->conf.ConfigIndex = cf->index;
 727                         link->io.BasePort1 = cf->io.win[0].base;
 728                         link->io.NumPorts1 = cf->io.win[0].len; /*yo */
 729                         link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
 730                         i = pcmcia_request_io(link->handle, &link->io);
 731                         if (i == CS_SUCCESS)
 732                                 break;
 733                 }
 734                 i = next_tuple(handle, &tuple, &parse);
 735         }
 736
 737         if (i != CS_SUCCESS) {
 738                 cs_error(link->handle, RequestIO, i);
 739                 goto failed;
 740         }
 741
 742         i = pcmcia_request_irq(link->handle, &link->irq);
 743         if (i != CS_SUCCESS) {
 744                 cs_error(link->handle, RequestIRQ, i);
 745                 link->irq.AssignedIRQ = 0;
 746         }
 747
 748         i = pcmcia_request_configuration(link->handle, &link->conf);
 749         if (i != CS_SUCCESS) {
 750                 cs_error(link->handle, RequestConfiguration, i);
 751                 goto failed;
 752         }
 753
 754         if (dtl1_open(info) != 0)
 755                 goto failed;
 756
 757         strcpy(info->node.dev_name, info->hdev->name);
 758         link->dev = &info->node;
 759         link->state &= ~DEV_CONFIG_PENDING;
 760
 761         return;
 762
 763 cs_failed:
 764         cs_error(link->handle, last_fn, last_ret);
 765
 766 failed:
 767         dtl1_release(link);
 768 }
 769
 770
 771 static void dtl1_release(dev_link_t *link)
 772 {
 773         dtl1_info_t *info = link->priv;
 774
 775         if (link->state & DEV_PRESENT)
 776                 dtl1_close(info);
 777
 778         link->dev = NULL;
 779
 780         pcmcia_release_configuration(link->handle);
 781         pcmcia_release_io(link->handle, &link->io);
 782         pcmcia_release_irq(link->handle, &link->irq);
 783
 784         link->state &= ~DEV_CONFIG;
 785 }
 786
 787
 788 static int dtl1_event(event_t event, int priority, event_callback_args_t *args)
 789 {
 790         dev_link_t *link = args->client_data;
 791         dtl1_info_t *info = link->priv;
 792
 793         switch (event) {
 794         case CS_EVENT_CARD_REMOVAL:
 795                 link->state &= ~DEV_PRESENT;
 796                 if (link->state & DEV_CONFIG) {
 797                         dtl1_close(info);
 798                         dtl1_release(link);
 799                 }
 800                 break;
 801         case CS_EVENT_CARD_INSERTION:
 802                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 803                 dtl1_config(link);
 804                 break;
 805         case CS_EVENT_PM_SUSPEND:
 806                 link->state |= DEV_SUSPEND;
 807                 /* Fall through... */
 808         case CS_EVENT_RESET_PHYSICAL:
 809                 if (link->state & DEV_CONFIG)
 810                         pcmcia_release_configuration(link->handle);
 811                 break;
 812         case CS_EVENT_PM_RESUME:
 813                 link->state &= ~DEV_SUSPEND;
 814                 /* Fall through... */
 815         case CS_EVENT_CARD_RESET:
 816                 if (DEV_OK(link))
 817                         pcmcia_request_configuration(link->handle, &link->conf);
 818                 break;
 819         }
 820
 821         return 0;
 822 }
 823
 824 static struct pcmcia_driver dtl1_driver = {
 825         .owner          = THIS_MODULE,
 826         .drv            = {
 827                 .name   = "dtl1_cs",
 828         },
 829         .attach         = dtl1_attach,
 830         .detach         = dtl1_detach,
 831 };
 832
 833 static int __init init_dtl1_cs(void)
 834 {
 835         return pcmcia_register_driver(&dtl1_driver);
 836 }
 837
 838
 839 static void __exit exit_dtl1_cs(void)
 840 {
 841         pcmcia_unregister_driver(&dtl1_driver);
 842
 843         /* XXX: this really needs to move into generic code.. */
 844         while (dev_list != NULL)
 845                 dtl1_detach(dev_list);
 846 }
 847
 848 module_init(init_dtl1_cs);
 849 module_exit(exit_dtl1_cs);