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