drivers/bluetooth/bluecard_cs.c

   1 /*
   2  *
   3  *  Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
   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/module.h>
  24
  25 #include <linux/kernel.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/delay.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 #include <linux/moduleparam.h>
  37 #include <linux/wait.h>
  38
  39 #include <linux/skbuff.h>
  40 #include <linux/io.h>
  41
  42 #include <pcmcia/cistpl.h>
  43 #include <pcmcia/ciscode.h>
  44 #include <pcmcia/ds.h>
  45 #include <pcmcia/cisreg.h>
  46
  47 #include <net/bluetooth/bluetooth.h>
  48 #include <net/bluetooth/hci_core.h>
  49
  50
  51
  52 /* ======================== Module parameters ======================== */
  53
  54
  55 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  56 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
  57 MODULE_LICENSE("GPL");
  58
  59
  60
  61 /* ======================== Local structures ======================== */
  62
  63
  64 struct bluecard_info {
  65         struct pcmcia_device *p_dev;
  66
  67         struct hci_dev *hdev;
  68
  69         spinlock_t lock;                /* For serializing operations */
  70         struct timer_list timer;        /* For LED control */
  71
  72         struct sk_buff_head txq;
  73         unsigned long tx_state;
  74
  75         unsigned long rx_state;
  76         unsigned long rx_count;
  77         struct sk_buff *rx_skb;
  78
  79         unsigned char ctrl_reg;
  80         unsigned long hw_state;         /* Status of the hardware and LED control */
  81 };
  82
  83
  84 static int bluecard_config(struct pcmcia_device *link);
  85 static void bluecard_release(struct pcmcia_device *link);
  86
  87 static void bluecard_detach(struct pcmcia_device *p_dev);
  88
  89
  90 /* Default baud rate: 57600, 115200, 230400 or 460800 */
  91 #define DEFAULT_BAUD_RATE  230400
  92
  93
  94 /* Hardware states */
  95 #define CARD_READY             1
  96 #define CARD_ACTIVITY          2
  97 #define CARD_HAS_PCCARD_ID     4
  98 #define CARD_HAS_POWER_LED     5
  99 #define CARD_HAS_ACTIVITY_LED  6
 100
 101 /* Transmit states  */
 102 #define XMIT_SENDING         1
 103 #define XMIT_WAKEUP          2
 104 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 105 #define XMIT_BUF_ONE_READY   6
 106 #define XMIT_BUF_TWO_READY   7
 107 #define XMIT_SENDING_READY   8
 108
 109 /* Receiver states */
 110 #define RECV_WAIT_PACKET_TYPE   0
 111 #define RECV_WAIT_EVENT_HEADER  1
 112 #define RECV_WAIT_ACL_HEADER    2
 113 #define RECV_WAIT_SCO_HEADER    3
 114 #define RECV_WAIT_DATA          4
 115
 116 /* Special packet types */
 117 #define PKT_BAUD_RATE_57600   0x80
 118 #define PKT_BAUD_RATE_115200  0x81
 119 #define PKT_BAUD_RATE_230400  0x82
 120 #define PKT_BAUD_RATE_460800  0x83
 121
 122
 123 /* These are the register offsets */
 124 #define REG_COMMAND     0x20
 125 #define REG_INTERRUPT   0x21
 126 #define REG_CONTROL     0x22
 127 #define REG_RX_CONTROL  0x24
 128 #define REG_CARD_RESET  0x30
 129 #define REG_LED_CTRL    0x30
 130
 131 /* REG_COMMAND */
 132 #define REG_COMMAND_TX_BUF_ONE  0x01
 133 #define REG_COMMAND_TX_BUF_TWO  0x02
 134 #define REG_COMMAND_RX_BUF_ONE  0x04
 135 #define REG_COMMAND_RX_BUF_TWO  0x08
 136 #define REG_COMMAND_RX_WIN_ONE  0x00
 137 #define REG_COMMAND_RX_WIN_TWO  0x10
 138
 139 /* REG_CONTROL */
 140 #define REG_CONTROL_BAUD_RATE_57600   0x00
 141 #define REG_CONTROL_BAUD_RATE_115200  0x01
 142 #define REG_CONTROL_BAUD_RATE_230400  0x02
 143 #define REG_CONTROL_BAUD_RATE_460800  0x03
 144 #define REG_CONTROL_RTS               0x04
 145 #define REG_CONTROL_BT_ON             0x08
 146 #define REG_CONTROL_BT_RESET          0x10
 147 #define REG_CONTROL_BT_RES_PU         0x20
 148 #define REG_CONTROL_INTERRUPT         0x40
 149 #define REG_CONTROL_CARD_RESET        0x80
 150
 151 /* REG_RX_CONTROL */
 152 #define RTS_LEVEL_SHIFT_BITS  0x02
 153
 154
 155
 156 /* ======================== LED handling routines ======================== */
 157
 158
 159 static void bluecard_activity_led_timeout(struct timer_list *t)
 160 {
 161         struct bluecard_info *info = from_timer(info, t, timer);
 162         unsigned int iobase = info->p_dev->resource[0]->start;
 163
 164         if (test_bit(CARD_ACTIVITY, &(info->hw_state))) {
 165                 /* leave LED in inactive state for HZ/10 for blink effect */
 166                 clear_bit(CARD_ACTIVITY, &(info->hw_state));
 167                 mod_timer(&(info->timer), jiffies + HZ / 10);
 168         }
 169
 170         /* Disable activity LED, enable power LED */
 171         outb(0x08 | 0x20, iobase + 0x30);
 172 }
 173
 174
 175 static void bluecard_enable_activity_led(struct bluecard_info *info)
 176 {
 177         unsigned int iobase = info->p_dev->resource[0]->start;
 178
 179         /* don't disturb running blink timer */
 180         if (timer_pending(&(info->timer)))
 181                 return;
 182
 183         set_bit(CARD_ACTIVITY, &(info->hw_state));
 184
 185         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 186                 /* Enable activity LED, keep power LED enabled */
 187                 outb(0x18 | 0x60, iobase + 0x30);
 188         } else {
 189                 /* Disable power LED */
 190                 outb(0x00, iobase + 0x30);
 191         }
 192
 193         /* Stop the LED after HZ/10 */
 194         mod_timer(&(info->timer), jiffies + HZ / 10);
 195 }
 196
 197
 198
 199 /* ======================== Interrupt handling ======================== */
 200
 201
 202 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 203 {
 204         int i, actual;
 205
 206         actual = (len > 15) ? 15 : len;
 207
 208         outb_p(actual, iobase + offset);
 209
 210         for (i = 0; i < actual; i++)
 211                 outb_p(buf[i], iobase + offset + i + 1);
 212
 213         return actual;
 214 }
 215
 216
 217 static void bluecard_write_wakeup(struct bluecard_info *info)
 218 {
 219         if (!info) {
 220                 BT_ERR("Unknown device");
 221                 return;
 222         }
 223
 224         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 225                 return;
 226
 227         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 228                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 229                 return;
 230         }
 231
 232         do {
 233                 unsigned int iobase = info->p_dev->resource[0]->start;
 234                 unsigned int offset;
 235                 unsigned char command;
 236                 unsigned long ready_bit;
 237                 register struct sk_buff *skb;
 238                 int len;
 239
 240                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 241
 242                 if (!pcmcia_dev_present(info->p_dev))
 243                         return;
 244
 245                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 246                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 247                                 break;
 248                         offset = 0x10;
 249                         command = REG_COMMAND_TX_BUF_TWO;
 250                         ready_bit = XMIT_BUF_TWO_READY;
 251                 } else {
 252                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 253                                 break;
 254                         offset = 0x00;
 255                         command = REG_COMMAND_TX_BUF_ONE;
 256                         ready_bit = XMIT_BUF_ONE_READY;
 257                 }
 258
 259                 skb = skb_dequeue(&(info->txq));
 260                 if (!skb)
 261                         break;
 262
 263                 if (hci_skb_pkt_type(skb) & 0x80) {
 264                         /* Disable RTS */
 265                         info->ctrl_reg |= REG_CONTROL_RTS;
 266                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 267                 }
 268
 269                 /* Activate LED */
 270                 bluecard_enable_activity_led(info);
 271
 272                 /* Send frame */
 273                 len = bluecard_write(iobase, offset, skb->data, skb->len);
 274
 275                 /* Tell the FPGA to send the data */
 276                 outb_p(command, iobase + REG_COMMAND);
 277
 278                 /* Mark the buffer as dirty */
 279                 clear_bit(ready_bit, &(info->tx_state));
 280
 281                 if (hci_skb_pkt_type(skb) & 0x80) {
 282                         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 283                         DEFINE_WAIT(wait);
 284
 285                         unsigned char baud_reg;
 286
 287                         switch (hci_skb_pkt_type(skb)) {
 288                         case PKT_BAUD_RATE_460800:
 289                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 290                                 break;
 291                         case PKT_BAUD_RATE_230400:
 292                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 293                                 break;
 294                         case PKT_BAUD_RATE_115200:
 295                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 296                                 break;
 297                         case PKT_BAUD_RATE_57600:
 298                         default:
 299                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 300                                 break;
 301                         }
 302
 303                         /* Wait until the command reaches the baseband */
 304                         mdelay(100);
 305
 306                         /* Set baud on baseband */
 307                         info->ctrl_reg &= ~0x03;
 308                         info->ctrl_reg |= baud_reg;
 309                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 310
 311                         /* Enable RTS */
 312                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 313                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 314
 315                         /* Wait before the next HCI packet can be send */
 316                         mdelay(1000);
 317                 }
 318
 319                 if (len == skb->len) {
 320                         kfree_skb(skb);
 321                 } else {
 322                         skb_pull(skb, len);
 323                         skb_queue_head(&(info->txq), skb);
 324                 }
 325
 326                 info->hdev->stat.byte_tx += len;
 327
 328                 /* Change buffer */
 329                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 330
 331         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 332
 333         clear_bit(XMIT_SENDING, &(info->tx_state));
 334 }
 335
 336
 337 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 338 {
 339         int i, n, len;
 340
 341         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 342
 343         len = inb(iobase + offset);
 344         n = 0;
 345         i = 1;
 346
 347         while (n < len) {
 348
 349                 if (i == 16) {
 350                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 351                         i = 0;
 352                 }
 353
 354                 buf[n] = inb(iobase + offset + i);
 355
 356                 n++;
 357                 i++;
 358
 359         }
 360
 361         return len;
 362 }
 363
 364
 365 static void bluecard_receive(struct bluecard_info *info,
 366                              unsigned int offset)
 367 {
 368         unsigned int iobase;
 369         unsigned char buf[31];
 370         int i, len;
 371
 372         if (!info) {
 373                 BT_ERR("Unknown device");
 374                 return;
 375         }
 376
 377         iobase = info->p_dev->resource[0]->start;
 378
 379         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 380                 bluecard_enable_activity_led(info);
 381
 382         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 383
 384         for (i = 0; i < len; i++) {
 385
 386                 /* Allocate packet */
 387                 if (!info->rx_skb) {
 388                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 389                         info->rx_count = 0;
 390                         info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 391                         if (!info->rx_skb) {
 392                                 BT_ERR("Can't allocate mem for new packet");
 393                                 return;
 394                         }
 395                 }
 396
 397                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 398
 399                         hci_skb_pkt_type(info->rx_skb) = buf[i];
 400
 401                         switch (hci_skb_pkt_type(info->rx_skb)) {
 402
 403                         case 0x00:
 404                                 /* init packet */
 405                                 if (offset != 0x00) {
 406                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 407                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 408                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 409                                         bluecard_write_wakeup(info);
 410                                 }
 411
 412                                 kfree_skb(info->rx_skb);
 413                                 info->rx_skb = NULL;
 414                                 break;
 415
 416                         case HCI_EVENT_PKT:
 417                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 418                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 419                                 break;
 420
 421                         case HCI_ACLDATA_PKT:
 422                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 423                                 info->rx_count = HCI_ACL_HDR_SIZE;
 424                                 break;
 425
 426                         case HCI_SCODATA_PKT:
 427                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 428                                 info->rx_count = HCI_SCO_HDR_SIZE;
 429                                 break;
 430
 431                         default:
 432                                 /* unknown packet */
 433                                 BT_ERR("Unknown HCI packet with type 0x%02x received",
 434                                        hci_skb_pkt_type(info->rx_skb));
 435                                 info->hdev->stat.err_rx++;
 436
 437                                 kfree_skb(info->rx_skb);
 438                                 info->rx_skb = NULL;
 439                                 break;
 440
 441                         }
 442
 443                 } else {
 444
 445                         skb_put_u8(info->rx_skb, buf[i]);
 446                         info->rx_count--;
 447
 448                         if (info->rx_count == 0) {
 449
 450                                 int dlen;
 451                                 struct hci_event_hdr *eh;
 452                                 struct hci_acl_hdr *ah;
 453                                 struct hci_sco_hdr *sh;
 454
 455                                 switch (info->rx_state) {
 456
 457                                 case RECV_WAIT_EVENT_HEADER:
 458                                         eh = hci_event_hdr(info->rx_skb);
 459                                         info->rx_state = RECV_WAIT_DATA;
 460                                         info->rx_count = eh->plen;
 461                                         break;
 462
 463                                 case RECV_WAIT_ACL_HEADER:
 464                                         ah = hci_acl_hdr(info->rx_skb);
 465                                         dlen = __le16_to_cpu(ah->dlen);
 466                                         info->rx_state = RECV_WAIT_DATA;
 467                                         info->rx_count = dlen;
 468                                         break;
 469
 470                                 case RECV_WAIT_SCO_HEADER:
 471                                         sh = hci_sco_hdr(info->rx_skb);
 472                                         info->rx_state = RECV_WAIT_DATA;
 473                                         info->rx_count = sh->dlen;
 474                                         break;
 475
 476                                 case RECV_WAIT_DATA:
 477                                         hci_recv_frame(info->hdev, info->rx_skb);
 478                                         info->rx_skb = NULL;
 479                                         break;
 480
 481                                 }
 482
 483                         }
 484
 485                 }
 486
 487
 488         }
 489
 490         info->hdev->stat.byte_rx += len;
 491 }
 492
 493
 494 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 495 {
 496         struct bluecard_info *info = dev_inst;
 497         unsigned int iobase;
 498         unsigned char reg;
 499
 500         if (!info || !info->hdev)
 501                 /* our irq handler is shared */
 502                 return IRQ_NONE;
 503
 504         if (!test_bit(CARD_READY, &(info->hw_state)))
 505                 return IRQ_HANDLED;
 506
 507         iobase = info->p_dev->resource[0]->start;
 508
 509         spin_lock(&(info->lock));
 510
 511         /* Disable interrupt */
 512         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 513         outb(info->ctrl_reg, iobase + REG_CONTROL);
 514
 515         reg = inb(iobase + REG_INTERRUPT);
 516
 517         if ((reg != 0x00) && (reg != 0xff)) {
 518
 519                 if (reg & 0x04) {
 520                         bluecard_receive(info, 0x00);
 521                         outb(0x04, iobase + REG_INTERRUPT);
 522                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 523                 }
 524
 525                 if (reg & 0x08) {
 526                         bluecard_receive(info, 0x10);
 527                         outb(0x08, iobase + REG_INTERRUPT);
 528                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 529                 }
 530
 531                 if (reg & 0x01) {
 532                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 533                         outb(0x01, iobase + REG_INTERRUPT);
 534                         bluecard_write_wakeup(info);
 535                 }
 536
 537                 if (reg & 0x02) {
 538                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 539                         outb(0x02, iobase + REG_INTERRUPT);
 540                         bluecard_write_wakeup(info);
 541                 }
 542
 543         }
 544
 545         /* Enable interrupt */
 546         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 547         outb(info->ctrl_reg, iobase + REG_CONTROL);
 548
 549         spin_unlock(&(info->lock));
 550
 551         return IRQ_HANDLED;
 552 }
 553
 554
 555
 556 /* ======================== Device specific HCI commands ======================== */
 557
 558
 559 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 560 {
 561         struct bluecard_info *info = hci_get_drvdata(hdev);
 562         struct sk_buff *skb;
 563
 564         /* Ericsson baud rate command */
 565         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 566
 567         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_KERNEL);
 568         if (!skb) {
 569                 BT_ERR("Can't allocate mem for new packet");
 570                 return -1;
 571         }
 572
 573         switch (baud) {
 574         case 460800:
 575                 cmd[4] = 0x00;
 576                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
 577                 break;
 578         case 230400:
 579                 cmd[4] = 0x01;
 580                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
 581                 break;
 582         case 115200:
 583                 cmd[4] = 0x02;
 584                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
 585                 break;
 586         case 57600:
 587         default:
 588                 cmd[4] = 0x03;
 589                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
 590                 break;
 591         }
 592
 593         skb_put_data(skb, cmd, sizeof(cmd));
 594
 595         skb_queue_tail(&(info->txq), skb);
 596
 597         bluecard_write_wakeup(info);
 598
 599         return 0;
 600 }
 601
 602
 603
 604 /* ======================== HCI interface ======================== */
 605
 606
 607 static int bluecard_hci_flush(struct hci_dev *hdev)
 608 {
 609         struct bluecard_info *info = hci_get_drvdata(hdev);
 610
 611         /* Drop TX queue */
 612         skb_queue_purge(&(info->txq));
 613
 614         return 0;
 615 }
 616
 617
 618 static int bluecard_hci_open(struct hci_dev *hdev)
 619 {
 620         struct bluecard_info *info = hci_get_drvdata(hdev);
 621         unsigned int iobase = info->p_dev->resource[0]->start;
 622
 623         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 624                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 625
 626         /* Enable power LED */
 627         outb(0x08 | 0x20, iobase + 0x30);
 628
 629         return 0;
 630 }
 631
 632
 633 static int bluecard_hci_close(struct hci_dev *hdev)
 634 {
 635         struct bluecard_info *info = hci_get_drvdata(hdev);
 636         unsigned int iobase = info->p_dev->resource[0]->start;
 637
 638         bluecard_hci_flush(hdev);
 639
 640         /* Stop LED timer */
 641         del_timer_sync(&(info->timer));
 642
 643         /* Disable power LED */
 644         outb(0x00, iobase + 0x30);
 645
 646         return 0;
 647 }
 648
 649
 650 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 651 {
 652         struct bluecard_info *info = hci_get_drvdata(hdev);
 653
 654         switch (hci_skb_pkt_type(skb)) {
 655         case HCI_COMMAND_PKT:
 656                 hdev->stat.cmd_tx++;
 657                 break;
 658         case HCI_ACLDATA_PKT:
 659                 hdev->stat.acl_tx++;
 660                 break;
 661         case HCI_SCODATA_PKT:
 662                 hdev->stat.sco_tx++;
 663                 break;
 664         }
 665
 666         /* Prepend skb with frame type */
 667         memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
 668         skb_queue_tail(&(info->txq), skb);
 669
 670         bluecard_write_wakeup(info);
 671
 672         return 0;
 673 }
 674
 675
 676
 677 /* ======================== Card services HCI interaction ======================== */
 678
 679
 680 static int bluecard_open(struct bluecard_info *info)
 681 {
 682         unsigned int iobase = info->p_dev->resource[0]->start;
 683         struct hci_dev *hdev;
 684         unsigned char id;
 685
 686         spin_lock_init(&(info->lock));
 687
 688         timer_setup(&info->timer, bluecard_activity_led_timeout, 0);
 689
 690         skb_queue_head_init(&(info->txq));
 691
 692         info->rx_state = RECV_WAIT_PACKET_TYPE;
 693         info->rx_count = 0;
 694         info->rx_skb = NULL;
 695
 696         /* Initialize HCI device */
 697         hdev = hci_alloc_dev();
 698         if (!hdev) {
 699                 BT_ERR("Can't allocate HCI device");
 700                 return -ENOMEM;
 701         }
 702
 703         info->hdev = hdev;
 704
 705         hdev->bus = HCI_PCCARD;
 706         hci_set_drvdata(hdev, info);
 707         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 708
 709         hdev->open  = bluecard_hci_open;
 710         hdev->close = bluecard_hci_close;
 711         hdev->flush = bluecard_hci_flush;
 712         hdev->send  = bluecard_hci_send_frame;
 713
 714         id = inb(iobase + 0x30);
 715
 716         if ((id & 0x0f) == 0x02)
 717                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 718
 719         if (id & 0x10)
 720                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 721
 722         if (id & 0x20)
 723                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 724
 725         /* Reset card */
 726         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 727         outb(info->ctrl_reg, iobase + REG_CONTROL);
 728
 729         /* Turn FPGA off */
 730         outb(0x80, iobase + 0x30);
 731
 732         /* Wait some time */
 733         msleep(10);
 734
 735         /* Turn FPGA on */
 736         outb(0x00, iobase + 0x30);
 737
 738         /* Activate card */
 739         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 740         outb(info->ctrl_reg, iobase + REG_CONTROL);
 741
 742         /* Enable interrupt */
 743         outb(0xff, iobase + REG_INTERRUPT);
 744         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 745         outb(info->ctrl_reg, iobase + REG_CONTROL);
 746
 747         if ((id & 0x0f) == 0x03) {
 748                 /* Disable RTS */
 749                 info->ctrl_reg |= REG_CONTROL_RTS;
 750                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 751
 752                 /* Set baud rate */
 753                 info->ctrl_reg |= 0x03;
 754                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 755
 756                 /* Enable RTS */
 757                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 758                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 759
 760                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 761                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 762                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 763         }
 764
 765         /* Start the RX buffers */
 766         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 767         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 768
 769         /* Signal that the hardware is ready */
 770         set_bit(CARD_READY, &(info->hw_state));
 771
 772         /* Drop TX queue */
 773         skb_queue_purge(&(info->txq));
 774
 775         /* Control the point at which RTS is enabled */
 776         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 777
 778         /* Timeout before it is safe to send the first HCI packet */
 779         msleep(1250);
 780
 781         /* Register HCI device */
 782         if (hci_register_dev(hdev) < 0) {
 783                 BT_ERR("Can't register HCI device");
 784                 info->hdev = NULL;
 785                 hci_free_dev(hdev);
 786                 return -ENODEV;
 787         }
 788
 789         return 0;
 790 }
 791
 792
 793 static int bluecard_close(struct bluecard_info *info)
 794 {
 795         unsigned int iobase = info->p_dev->resource[0]->start;
 796         struct hci_dev *hdev = info->hdev;
 797
 798         if (!hdev)
 799                 return -ENODEV;
 800
 801         bluecard_hci_close(hdev);
 802
 803         clear_bit(CARD_READY, &(info->hw_state));
 804
 805         /* Reset card */
 806         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 807         outb(info->ctrl_reg, iobase + REG_CONTROL);
 808
 809         /* Turn FPGA off */
 810         outb(0x80, iobase + 0x30);
 811
 812         hci_unregister_dev(hdev);
 813         hci_free_dev(hdev);
 814
 815         return 0;
 816 }
 817
 818 static int bluecard_probe(struct pcmcia_device *link)
 819 {
 820         struct bluecard_info *info;
 821
 822         /* Create new info device */
 823         info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
 824         if (!info)
 825                 return -ENOMEM;
 826
 827         info->p_dev = link;
 828         link->priv = info;
 829
 830         link->config_flags |= CONF_ENABLE_IRQ;
 831
 832         return bluecard_config(link);
 833 }
 834
 835
 836 static void bluecard_detach(struct pcmcia_device *link)
 837 {
 838         bluecard_release(link);
 839 }
 840
 841
 842 static int bluecard_config(struct pcmcia_device *link)
 843 {
 844         struct bluecard_info *info = link->priv;
 845         int i, n;
 846
 847         link->config_index = 0x20;
 848
 849         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 850         link->resource[0]->end = 64;
 851         link->io_lines = 6;
 852
 853         for (n = 0; n < 0x400; n += 0x40) {
 854                 link->resource[0]->start = n ^ 0x300;
 855                 i = pcmcia_request_io(link);
 856                 if (i == 0)
 857                         break;
 858         }
 859
 860         if (i != 0)
 861                 goto failed;
 862
 863         i = pcmcia_request_irq(link, bluecard_interrupt);
 864         if (i != 0)
 865                 goto failed;
 866
 867         i = pcmcia_enable_device(link);
 868         if (i != 0)
 869                 goto failed;
 870
 871         if (bluecard_open(info) != 0)
 872                 goto failed;
 873
 874         return 0;
 875
 876 failed:
 877         bluecard_release(link);
 878         return -ENODEV;
 879 }
 880
 881
 882 static void bluecard_release(struct pcmcia_device *link)
 883 {
 884         struct bluecard_info *info = link->priv;
 885
 886         bluecard_close(info);
 887
 888         del_timer_sync(&(info->timer));
 889
 890         pcmcia_disable_device(link);
 891 }
 892
 893 static const struct pcmcia_device_id bluecard_ids[] = {
 894         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 895         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 896         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 897         PCMCIA_DEVICE_NULL
 898 };
 899 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 900
 901 static struct pcmcia_driver bluecard_driver = {
 902         .owner          = THIS_MODULE,
 903         .name           = "bluecard_cs",
 904         .probe          = bluecard_probe,
 905         .remove         = bluecard_detach,
 906         .id_table       = bluecard_ids,
 907 };
 908 module_pcmcia_driver(bluecard_driver);