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/timer.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("BlueZ 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(u_long arg);
  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                 printk(KERN_WARNING "dtl1_cs: Call of write_wakeup for unknown device.\n");
 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 "dtl1_cs: 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                 printk(KERN_WARNING "dtl1_cs: Call of receive for unknown device.\n");
 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 = bluez_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 242                                 printk(KERN_WARNING "dtl1_cs: Can't allocate mem for new packet.\n");
 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                                         printk(KERN_WARNING "dtl1_cs: Unknown HCI packet with type 0x%02x received.\n", 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 to long */
 301                 if (boguscount++ > 32)
 302                         break;
 303
 304         } while (inb(iobase + UART_LSR) & UART_LSR_DR);
 305 }
 306
 307
 308 void 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) {
 317                 printk(KERN_WARNING "dtl1_cs: Call of irq %d for unknown device.\n", irq);
 318                 return;
 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                         printk(KERN_NOTICE "dtl1_cs: RLSI\n");
 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                         printk(KERN_NOTICE "dtl1_cs: Unhandled IIR=%#x\n", iir);
 347                         break;
 348                 }
 349
 350                 /* Make sure we don't stay here to 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
 369
 370
 371 /* ======================== HCI interface ======================== */
 372
 373
 374 static int dtl1_hci_open(struct hci_dev *hdev)
 375 {
 376         set_bit(HCI_RUNNING, &(hdev->flags));
 377
 378         return 0;
 379 }
 380
 381
 382 static int dtl1_hci_flush(struct hci_dev *hdev)
 383 {
 384         dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);
 385
 386         /* Drop TX queue */
 387         skb_queue_purge(&(info->txq));
 388
 389         return 0;
 390 }
 391
 392
 393 static int dtl1_hci_close(struct hci_dev *hdev)
 394 {
 395         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 396                 return 0;
 397
 398         dtl1_hci_flush(hdev);
 399
 400         return 0;
 401 }
 402
 403
 404 static int dtl1_hci_send_frame(struct sk_buff *skb)
 405 {
 406         dtl1_info_t *info;
 407         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 408         struct sk_buff *s;
 409         nsh_t nsh;
 410
 411         if (!hdev) {
 412                 printk(KERN_WARNING "dtl1_cs: Frame for unknown HCI device (hdev=NULL).");
 413                 return -ENODEV;
 414         }
 415
 416         info = (dtl1_info_t *)(hdev->driver_data);
 417
 418         switch (skb->pkt_type) {
 419         case HCI_COMMAND_PKT:
 420                 hdev->stat.cmd_tx++;
 421                 nsh.type = 0x81;
 422                 break;
 423         case HCI_ACLDATA_PKT:
 424                 hdev->stat.acl_tx++;
 425                 nsh.type = 0x82;
 426                 break;
 427         case HCI_SCODATA_PKT:
 428                 hdev->stat.sco_tx++;
 429                 nsh.type = 0x83;
 430                 break;
 431         };
 432
 433         nsh.zero = 0;
 434         nsh.len = skb->len;
 435
 436         s = bluez_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
 437         skb_reserve(s, NSHL);
 438         memcpy(skb_put(s, skb->len), skb->data, skb->len);
 439         if (skb->len & 0x0001)
 440                 *skb_put(s, 1) = 0;     /* PAD */
 441
 442         /* Prepend skb with Nokia frame header and queue */
 443         memcpy(skb_push(s, NSHL), &nsh, NSHL);
 444         skb_queue_tail(&(info->txq), s);
 445
 446         dtl1_write_wakeup(info);
 447
 448         kfree_skb(skb);
 449
 450         return 0;
 451 }
 452
 453
 454 static void dtl1_hci_destruct(struct hci_dev *hdev)
 455 {
 456 }
 457
 458
 459 static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd,  unsigned long arg)
 460 {
 461         return -ENOIOCTLCMD;
 462 }
 463
 464
 465
 466 /* ======================== Card services HCI interaction ======================== */
 467
 468
 469 int dtl1_open(dtl1_info_t *info)
 470 {
 471         unsigned long flags;
 472         unsigned int iobase = info->link.io.BasePort1;
 473         struct hci_dev *hdev;
 474
 475         spin_lock_init(&(info->lock));
 476
 477         skb_queue_head_init(&(info->txq));
 478
 479         info->rx_state = RECV_WAIT_NSH;
 480         info->rx_count = NSHL;
 481         info->rx_skb = NULL;
 482
 483         set_bit(XMIT_WAITING, &(info->tx_state));
 484
 485         spin_lock_irqsave(&(info->lock), flags);
 486
 487         /* Reset UART */
 488         outb(0, iobase + UART_MCR);
 489
 490         /* Turn off interrupts */
 491         outb(0, iobase + UART_IER);
 492
 493         /* Initialize UART */
 494         outb(UART_LCR_WLEN8, iobase + UART_LCR);        /* Reset DLAB */
 495         outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
 496
 497         info->ri_latch = inb(info->link.io.BasePort1 + UART_MSR) & UART_MSR_RI;
 498
 499         /* Turn on interrupts */
 500         outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
 501
 502         spin_unlock_irqrestore(&(info->lock), flags);
 503
 504         /* Timeout before it is safe to send the first HCI packet */
 505         set_current_state(TASK_INTERRUPTIBLE);
 506         schedule_timeout(HZ * 2);
 507
 508
 509         /* Initialize and register HCI device */
 510
 511         hdev = &(info->hdev);
 512
 513         hdev->type = HCI_PCCARD;
 514         hdev->driver_data = info;
 515
 516         hdev->open = dtl1_hci_open;
 517         hdev->close = dtl1_hci_close;
 518         hdev->flush = dtl1_hci_flush;
 519         hdev->send = dtl1_hci_send_frame;
 520         hdev->destruct = dtl1_hci_destruct;
 521         hdev->ioctl = dtl1_hci_ioctl;
 522
 523         if (hci_register_dev(hdev) < 0) {
 524                 printk(KERN_WARNING "dtl1_cs: Can't register HCI device %s.\n", hdev->name);
 525                 return -ENODEV;
 526         }
 527
 528         return 0;
 529 }
 530
 531
 532 int dtl1_close(dtl1_info_t *info)
 533 {
 534         unsigned long flags;
 535         unsigned int iobase = info->link.io.BasePort1;
 536         struct hci_dev *hdev = &(info->hdev);
 537
 538         if (info->link.state & DEV_CONFIG_PENDING)
 539                 return -ENODEV;
 540
 541         dtl1_hci_close(hdev);
 542
 543         spin_lock_irqsave(&(info->lock), flags);
 544
 545         /* Reset UART */
 546         outb(0, iobase + UART_MCR);
 547
 548         /* Turn off interrupts */
 549         outb(0, iobase + UART_IER);
 550
 551         spin_unlock_irqrestore(&(info->lock), flags);
 552
 553         if (hci_unregister_dev(hdev) < 0)
 554                 printk(KERN_WARNING "dtl1_cs: Can't unregister HCI device %s.\n", hdev->name);
 555
 556         return 0;
 557 }
 558
 559
 560
 561 /* ======================== Card services ======================== */
 562
 563
 564 static void cs_error(client_handle_t handle, int func, int ret)
 565 {
 566         error_info_t err = { func, ret };
 567
 568         CardServices(ReportError, handle, &err);
 569 }
 570
 571
 572 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->release.function = &dtl1_release;
 589         link->release.data = (u_long)link;
 590         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 591         link->io.NumPorts1 = 8;
 592         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 593         link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 594
 595         if (irq_list[0] == -1)
 596                 link->irq.IRQInfo2 = irq_mask;
 597         else
 598                 for (i = 0; i < 4; i++)
 599                         link->irq.IRQInfo2 |= 1 << irq_list[i];
 600
 601         link->irq.Handler = dtl1_interrupt;
 602         link->irq.Instance = info;
 603
 604         link->conf.Attributes = CONF_ENABLE_IRQ;
 605         link->conf.Vcc = 50;
 606         link->conf.IntType = INT_MEMORY_AND_IO;
 607
 608         /* Register with Card Services */
 609         link->next = dev_list;
 610         dev_list = link;
 611         client_reg.dev_info = &dev_info;
 612         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 613         client_reg.EventMask =
 614                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 615                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 616                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 617         client_reg.event_handler = &dtl1_event;
 618         client_reg.Version = 0x0210;
 619         client_reg.event_callback_args.client_data = link;
 620
 621         ret = CardServices(RegisterClient, &link->handle, &client_reg);
 622         if (ret != CS_SUCCESS) {
 623                 cs_error(link->handle, RegisterClient, ret);
 624                 dtl1_detach(link);
 625                 return NULL;
 626         }
 627
 628         return link;
 629 }
 630
 631
 632 void dtl1_detach(dev_link_t *link)
 633 {
 634         dtl1_info_t *info = link->priv;
 635         dev_link_t **linkp;
 636         int ret;
 637
 638         /* Locate device structure */
 639         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 640                 if (*linkp == link)
 641                         break;
 642
 643         if (*linkp == NULL)
 644                 return;
 645
 646         del_timer(&link->release);
 647         if (link->state & DEV_CONFIG)
 648                 dtl1_release((u_long)link);
 649
 650         if (link->handle) {
 651                 ret = CardServices(DeregisterClient, link->handle);
 652                 if (ret != CS_SUCCESS)
 653                         cs_error(link->handle, DeregisterClient, ret);
 654         }
 655
 656         /* Unlink device structure, free bits */
 657         *linkp = link->next;
 658
 659         kfree(info);
 660 }
 661
 662
 663 static int get_tuple(int fn, client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 664 {
 665         int i;
 666
 667         i = CardServices(fn, handle, tuple);
 668         if (i != CS_SUCCESS)
 669                 return CS_NO_MORE_ITEMS;
 670
 671         i = CardServices(GetTupleData, handle, tuple);
 672         if (i != CS_SUCCESS)
 673                 return i;
 674
 675         return CardServices(ParseTuple, handle, tuple, parse);
 676 }
 677
 678
 679 #define first_tuple(a, b, c) get_tuple(GetFirstTuple, a, b, c)
 680 #define next_tuple(a, b, c) get_tuple(GetNextTuple, a, b, c)
 681
 682 void dtl1_config(dev_link_t *link)
 683 {
 684         client_handle_t handle = link->handle;
 685         dtl1_info_t *info = link->priv;
 686         tuple_t tuple;
 687         u_short buf[256];
 688         cisparse_t parse;
 689         cistpl_cftable_entry_t *cf = &parse.cftable_entry;
 690         config_info_t config;
 691         int i, last_ret, last_fn;
 692
 693         tuple.TupleData = (cisdata_t *)buf;
 694         tuple.TupleOffset = 0;
 695         tuple.TupleDataMax = 255;
 696         tuple.Attributes = 0;
 697
 698         /* Get configuration register information */
 699         tuple.DesiredTuple = CISTPL_CONFIG;
 700         last_ret = first_tuple(handle, &tuple, &parse);
 701         if (last_ret != CS_SUCCESS) {
 702                 last_fn = ParseTuple;
 703                 goto cs_failed;
 704         }
 705         link->conf.ConfigBase = parse.config.base;
 706         link->conf.Present = parse.config.rmask[0];
 707
 708         /* Configure card */
 709         link->state |= DEV_CONFIG;
 710         i = CardServices(GetConfigurationInfo, handle, &config);
 711         link->conf.Vcc = config.Vcc;
 712
 713         tuple.TupleData = (cisdata_t *)buf;
 714         tuple.TupleOffset = 0;
 715         tuple.TupleDataMax = 255;
 716         tuple.Attributes = 0;
 717         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 718
 719         /* Look for a generic full-sized window */
 720         link->io.NumPorts1 = 8;
 721         i = first_tuple(handle, &tuple, &parse);
 722         while (i != CS_NO_MORE_ITEMS) {
 723                 if ((i == CS_SUCCESS) && (cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
 724                         link->conf.ConfigIndex = cf->index;
 725                         link->io.BasePort1 = cf->io.win[0].base;
 726                         link->io.NumPorts1 = cf->io.win[0].len; /*yo */
 727                         link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
 728                         i = CardServices(RequestIO, link->handle, &link->io);
 729                         if (i == CS_SUCCESS)
 730                                 break;
 731                 }
 732                 i = next_tuple(handle, &tuple, &parse);
 733         }
 734
 735         if (i != CS_SUCCESS) {
 736                 cs_error(link->handle, RequestIO, i);
 737                 goto failed;
 738         }
 739
 740         i = CardServices(RequestIRQ, link->handle, &link->irq);
 741         if (i != CS_SUCCESS) {
 742                 cs_error(link->handle, RequestIRQ, i);
 743                 link->irq.AssignedIRQ = 0;
 744         }
 745
 746         i = CardServices(RequestConfiguration, link->handle, &link->conf);
 747         if (i != CS_SUCCESS) {
 748                 cs_error(link->handle, RequestConfiguration, i);
 749                 goto failed;
 750         }
 751
 752         MOD_INC_USE_COUNT;
 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((u_long)link);
 768 }
 769
 770
 771 void dtl1_release(u_long arg)
 772 {
 773         dev_link_t *link = (dev_link_t *)arg;
 774         dtl1_info_t *info = link->priv;
 775
 776         if (link->state & DEV_PRESENT)
 777                 dtl1_close(info);
 778
 779         MOD_DEC_USE_COUNT;
 780
 781         link->dev = NULL;
 782
 783         CardServices(ReleaseConfiguration, link->handle);
 784         CardServices(ReleaseIO, link->handle, &link->io);
 785         CardServices(ReleaseIRQ, link->handle, &link->irq);
 786
 787         link->state &= ~DEV_CONFIG;
 788 }
 789
 790
 791 int dtl1_event(event_t event, int priority, event_callback_args_t *args)
 792 {
 793         dev_link_t *link = args->client_data;
 794         dtl1_info_t *info = link->priv;
 795
 796         switch (event) {
 797         case CS_EVENT_CARD_REMOVAL:
 798                 link->state &= ~DEV_PRESENT;
 799                 if (link->state & DEV_CONFIG) {
 800                         dtl1_close(info);
 801                         mod_timer(&link->release, jiffies + HZ / 20);
 802                 }
 803                 break;
 804         case CS_EVENT_CARD_INSERTION:
 805                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 806                 dtl1_config(link);
 807                 break;
 808         case CS_EVENT_PM_SUSPEND:
 809                 link->state |= DEV_SUSPEND;
 810                 /* Fall through... */
 811         case CS_EVENT_RESET_PHYSICAL:
 812                 if (link->state & DEV_CONFIG)
 813                         CardServices(ReleaseConfiguration, link->handle);
 814                 break;
 815         case CS_EVENT_PM_RESUME:
 816                 link->state &= ~DEV_SUSPEND;
 817                 /* Fall through... */
 818         case CS_EVENT_CARD_RESET:
 819                 if (DEV_OK(link))
 820                         CardServices(RequestConfiguration, link->handle, &link->conf);
 821                 break;
 822         }
 823
 824         return 0;
 825 }
 826
 827
 828
 829 /* ======================== Module initialization ======================== */
 830
 831
 832 int __init init_dtl1_cs(void)
 833 {
 834         servinfo_t serv;
 835         int err;
 836
 837         CardServices(GetCardServicesInfo, &serv);
 838         if (serv.Revision != CS_RELEASE_CODE) {
 839                 printk(KERN_NOTICE "dtl1_cs: Card Services release does not match!\n");
 840                 return -1;
 841         }
 842
 843         err = register_pccard_driver(&dev_info, &dtl1_attach, &dtl1_detach);
 844
 845         return err;
 846 }
 847
 848
 849 void __exit exit_dtl1_cs(void)
 850 {
 851         unregister_pccard_driver(&dev_info);
 852
 853         while (dev_list != NULL)
 854                 dtl1_detach(dev_list);
 855 }
 856
 857
 858 module_init(init_dtl1_cs);
 859 module_exit(exit_dtl1_cs);
 860
 861 EXPORT_NO_SYMBOLS;