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                                 /* Fall through... */
 299                         default:
 300                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 301                                 break;
 302                         }
 303
 304                         /* Wait until the command reaches the baseband */
 305                         mdelay(100);
 306
 307                         /* Set baud on baseband */
 308                         info->ctrl_reg &= ~0x03;
 309                         info->ctrl_reg |= baud_reg;
 310                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 311
 312                         /* Enable RTS */
 313                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 314                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 315
 316                         /* Wait before the next HCI packet can be send */
 317                         mdelay(1000);
 318                 }
 319
 320                 if (len == skb->len) {
 321                         kfree_skb(skb);
 322                 } else {
 323                         skb_pull(skb, len);
 324                         skb_queue_head(&(info->txq), skb);
 325                 }
 326
 327                 info->hdev->stat.byte_tx += len;
 328
 329                 /* Change buffer */
 330                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 331
 332         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 333
 334         clear_bit(XMIT_SENDING, &(info->tx_state));
 335 }
 336
 337
 338 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 339 {
 340         int i, n, len;
 341
 342         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 343
 344         len = inb(iobase + offset);
 345         n = 0;
 346         i = 1;
 347
 348         while (n < len) {
 349
 350                 if (i == 16) {
 351                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 352                         i = 0;
 353                 }
 354
 355                 buf[n] = inb(iobase + offset + i);
 356
 357                 n++;
 358                 i++;
 359
 360         }
 361
 362         return len;
 363 }
 364
 365
 366 static void bluecard_receive(struct bluecard_info *info,
 367                              unsigned int offset)
 368 {
 369         unsigned int iobase;
 370         unsigned char buf[31];
 371         int i, len;
 372
 373         if (!info) {
 374                 BT_ERR("Unknown device");
 375                 return;
 376         }
 377
 378         iobase = info->p_dev->resource[0]->start;
 379
 380         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 381                 bluecard_enable_activity_led(info);
 382
 383         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 384
 385         for (i = 0; i < len; i++) {
 386
 387                 /* Allocate packet */
 388                 if (!info->rx_skb) {
 389                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 390                         info->rx_count = 0;
 391                         info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 392                         if (!info->rx_skb) {
 393                                 BT_ERR("Can't allocate mem for new packet");
 394                                 return;
 395                         }
 396                 }
 397
 398                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 399
 400                         hci_skb_pkt_type(info->rx_skb) = buf[i];
 401
 402                         switch (hci_skb_pkt_type(info->rx_skb)) {
 403
 404                         case 0x00:
 405                                 /* init packet */
 406                                 if (offset != 0x00) {
 407                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 408                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 409                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 410                                         bluecard_write_wakeup(info);
 411                                 }
 412
 413                                 kfree_skb(info->rx_skb);
 414                                 info->rx_skb = NULL;
 415                                 break;
 416
 417                         case HCI_EVENT_PKT:
 418                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 419                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 420                                 break;
 421
 422                         case HCI_ACLDATA_PKT:
 423                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 424                                 info->rx_count = HCI_ACL_HDR_SIZE;
 425                                 break;
 426
 427                         case HCI_SCODATA_PKT:
 428                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 429                                 info->rx_count = HCI_SCO_HDR_SIZE;
 430                                 break;
 431
 432                         default:
 433                                 /* unknown packet */
 434                                 BT_ERR("Unknown HCI packet with type 0x%02x received",
 435                                        hci_skb_pkt_type(info->rx_skb));
 436                                 info->hdev->stat.err_rx++;
 437
 438                                 kfree_skb(info->rx_skb);
 439                                 info->rx_skb = NULL;
 440                                 break;
 441
 442                         }
 443
 444                 } else {
 445
 446                         skb_put_u8(info->rx_skb, buf[i]);
 447                         info->rx_count--;
 448
 449                         if (info->rx_count == 0) {
 450
 451                                 int dlen;
 452                                 struct hci_event_hdr *eh;
 453                                 struct hci_acl_hdr *ah;
 454                                 struct hci_sco_hdr *sh;
 455
 456                                 switch (info->rx_state) {
 457
 458                                 case RECV_WAIT_EVENT_HEADER:
 459                                         eh = hci_event_hdr(info->rx_skb);
 460                                         info->rx_state = RECV_WAIT_DATA;
 461                                         info->rx_count = eh->plen;
 462                                         break;
 463
 464                                 case RECV_WAIT_ACL_HEADER:
 465                                         ah = hci_acl_hdr(info->rx_skb);
 466                                         dlen = __le16_to_cpu(ah->dlen);
 467                                         info->rx_state = RECV_WAIT_DATA;
 468                                         info->rx_count = dlen;
 469                                         break;
 470
 471                                 case RECV_WAIT_SCO_HEADER:
 472                                         sh = hci_sco_hdr(info->rx_skb);
 473                                         info->rx_state = RECV_WAIT_DATA;
 474                                         info->rx_count = sh->dlen;
 475                                         break;
 476
 477                                 case RECV_WAIT_DATA:
 478                                         hci_recv_frame(info->hdev, info->rx_skb);
 479                                         info->rx_skb = NULL;
 480                                         break;
 481
 482                                 }
 483
 484                         }
 485
 486                 }
 487
 488
 489         }
 490
 491         info->hdev->stat.byte_rx += len;
 492 }
 493
 494
 495 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 496 {
 497         struct bluecard_info *info = dev_inst;
 498         unsigned int iobase;
 499         unsigned char reg;
 500
 501         if (!info || !info->hdev)
 502                 /* our irq handler is shared */
 503                 return IRQ_NONE;
 504
 505         if (!test_bit(CARD_READY, &(info->hw_state)))
 506                 return IRQ_HANDLED;
 507
 508         iobase = info->p_dev->resource[0]->start;
 509
 510         spin_lock(&(info->lock));
 511
 512         /* Disable interrupt */
 513         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 514         outb(info->ctrl_reg, iobase + REG_CONTROL);
 515
 516         reg = inb(iobase + REG_INTERRUPT);
 517
 518         if ((reg != 0x00) && (reg != 0xff)) {
 519
 520                 if (reg & 0x04) {
 521                         bluecard_receive(info, 0x00);
 522                         outb(0x04, iobase + REG_INTERRUPT);
 523                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 524                 }
 525
 526                 if (reg & 0x08) {
 527                         bluecard_receive(info, 0x10);
 528                         outb(0x08, iobase + REG_INTERRUPT);
 529                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 530                 }
 531
 532                 if (reg & 0x01) {
 533                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 534                         outb(0x01, iobase + REG_INTERRUPT);
 535                         bluecard_write_wakeup(info);
 536                 }
 537
 538                 if (reg & 0x02) {
 539                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 540                         outb(0x02, iobase + REG_INTERRUPT);
 541                         bluecard_write_wakeup(info);
 542                 }
 543
 544         }
 545
 546         /* Enable interrupt */
 547         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 548         outb(info->ctrl_reg, iobase + REG_CONTROL);
 549
 550         spin_unlock(&(info->lock));
 551
 552         return IRQ_HANDLED;
 553 }
 554
 555
 556
 557 /* ======================== Device specific HCI commands ======================== */
 558
 559
 560 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 561 {
 562         struct bluecard_info *info = hci_get_drvdata(hdev);
 563         struct sk_buff *skb;
 564
 565         /* Ericsson baud rate command */
 566         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 567
 568         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_KERNEL);
 569         if (!skb) {
 570                 BT_ERR("Can't allocate mem for new packet");
 571                 return -1;
 572         }
 573
 574         switch (baud) {
 575         case 460800:
 576                 cmd[4] = 0x00;
 577                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
 578                 break;
 579         case 230400:
 580                 cmd[4] = 0x01;
 581                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
 582                 break;
 583         case 115200:
 584                 cmd[4] = 0x02;
 585                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
 586                 break;
 587         case 57600:
 588                 /* Fall through... */
 589         default:
 590                 cmd[4] = 0x03;
 591                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
 592                 break;
 593         }
 594
 595         skb_put_data(skb, cmd, sizeof(cmd));
 596
 597         skb_queue_tail(&(info->txq), skb);
 598
 599         bluecard_write_wakeup(info);
 600
 601         return 0;
 602 }
 603
 604
 605
 606 /* ======================== HCI interface ======================== */
 607
 608
 609 static int bluecard_hci_flush(struct hci_dev *hdev)
 610 {
 611         struct bluecard_info *info = hci_get_drvdata(hdev);
 612
 613         /* Drop TX queue */
 614         skb_queue_purge(&(info->txq));
 615
 616         return 0;
 617 }
 618
 619
 620 static int bluecard_hci_open(struct hci_dev *hdev)
 621 {
 622         struct bluecard_info *info = hci_get_drvdata(hdev);
 623         unsigned int iobase = info->p_dev->resource[0]->start;
 624
 625         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 626                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 627
 628         /* Enable power LED */
 629         outb(0x08 | 0x20, iobase + 0x30);
 630
 631         return 0;
 632 }
 633
 634
 635 static int bluecard_hci_close(struct hci_dev *hdev)
 636 {
 637         struct bluecard_info *info = hci_get_drvdata(hdev);
 638         unsigned int iobase = info->p_dev->resource[0]->start;
 639
 640         bluecard_hci_flush(hdev);
 641
 642         /* Stop LED timer */
 643         del_timer_sync(&(info->timer));
 644
 645         /* Disable power LED */
 646         outb(0x00, iobase + 0x30);
 647
 648         return 0;
 649 }
 650
 651
 652 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 653 {
 654         struct bluecard_info *info = hci_get_drvdata(hdev);
 655
 656         switch (hci_skb_pkt_type(skb)) {
 657         case HCI_COMMAND_PKT:
 658                 hdev->stat.cmd_tx++;
 659                 break;
 660         case HCI_ACLDATA_PKT:
 661                 hdev->stat.acl_tx++;
 662                 break;
 663         case HCI_SCODATA_PKT:
 664                 hdev->stat.sco_tx++;
 665                 break;
 666         }
 667
 668         /* Prepend skb with frame type */
 669         memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
 670         skb_queue_tail(&(info->txq), skb);
 671
 672         bluecard_write_wakeup(info);
 673
 674         return 0;
 675 }
 676
 677
 678
 679 /* ======================== Card services HCI interaction ======================== */
 680
 681
 682 static int bluecard_open(struct bluecard_info *info)
 683 {
 684         unsigned int iobase = info->p_dev->resource[0]->start;
 685         struct hci_dev *hdev;
 686         unsigned char id;
 687
 688         spin_lock_init(&(info->lock));
 689
 690         timer_setup(&info->timer, bluecard_activity_led_timeout, 0);
 691
 692         skb_queue_head_init(&(info->txq));
 693
 694         info->rx_state = RECV_WAIT_PACKET_TYPE;
 695         info->rx_count = 0;
 696         info->rx_skb = NULL;
 697
 698         /* Initialize HCI device */
 699         hdev = hci_alloc_dev();
 700         if (!hdev) {
 701                 BT_ERR("Can't allocate HCI device");
 702                 return -ENOMEM;
 703         }
 704
 705         info->hdev = hdev;
 706
 707         hdev->bus = HCI_PCCARD;
 708         hci_set_drvdata(hdev, info);
 709         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 710
 711         hdev->open  = bluecard_hci_open;
 712         hdev->close = bluecard_hci_close;
 713         hdev->flush = bluecard_hci_flush;
 714         hdev->send  = bluecard_hci_send_frame;
 715
 716         id = inb(iobase + 0x30);
 717
 718         if ((id & 0x0f) == 0x02)
 719                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 720
 721         if (id & 0x10)
 722                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 723
 724         if (id & 0x20)
 725                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 726
 727         /* Reset card */
 728         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 729         outb(info->ctrl_reg, iobase + REG_CONTROL);
 730
 731         /* Turn FPGA off */
 732         outb(0x80, iobase + 0x30);
 733
 734         /* Wait some time */
 735         msleep(10);
 736
 737         /* Turn FPGA on */
 738         outb(0x00, iobase + 0x30);
 739
 740         /* Activate card */
 741         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 742         outb(info->ctrl_reg, iobase + REG_CONTROL);
 743
 744         /* Enable interrupt */
 745         outb(0xff, iobase + REG_INTERRUPT);
 746         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 747         outb(info->ctrl_reg, iobase + REG_CONTROL);
 748
 749         if ((id & 0x0f) == 0x03) {
 750                 /* Disable RTS */
 751                 info->ctrl_reg |= REG_CONTROL_RTS;
 752                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 753
 754                 /* Set baud rate */
 755                 info->ctrl_reg |= 0x03;
 756                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 757
 758                 /* Enable RTS */
 759                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 760                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 761
 762                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 763                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 764                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 765         }
 766
 767         /* Start the RX buffers */
 768         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 769         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 770
 771         /* Signal that the hardware is ready */
 772         set_bit(CARD_READY, &(info->hw_state));
 773
 774         /* Drop TX queue */
 775         skb_queue_purge(&(info->txq));
 776
 777         /* Control the point at which RTS is enabled */
 778         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 779
 780         /* Timeout before it is safe to send the first HCI packet */
 781         msleep(1250);
 782
 783         /* Register HCI device */
 784         if (hci_register_dev(hdev) < 0) {
 785                 BT_ERR("Can't register HCI device");
 786                 info->hdev = NULL;
 787                 hci_free_dev(hdev);
 788                 return -ENODEV;
 789         }
 790
 791         return 0;
 792 }
 793
 794
 795 static int bluecard_close(struct bluecard_info *info)
 796 {
 797         unsigned int iobase = info->p_dev->resource[0]->start;
 798         struct hci_dev *hdev = info->hdev;
 799
 800         if (!hdev)
 801                 return -ENODEV;
 802
 803         bluecard_hci_close(hdev);
 804
 805         clear_bit(CARD_READY, &(info->hw_state));
 806
 807         /* Reset card */
 808         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 809         outb(info->ctrl_reg, iobase + REG_CONTROL);
 810
 811         /* Turn FPGA off */
 812         outb(0x80, iobase + 0x30);
 813
 814         hci_unregister_dev(hdev);
 815         hci_free_dev(hdev);
 816
 817         return 0;
 818 }
 819
 820 static int bluecard_probe(struct pcmcia_device *link)
 821 {
 822         struct bluecard_info *info;
 823
 824         /* Create new info device */
 825         info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
 826         if (!info)
 827                 return -ENOMEM;
 828
 829         info->p_dev = link;
 830         link->priv = info;
 831
 832         link->config_flags |= CONF_ENABLE_IRQ;
 833
 834         return bluecard_config(link);
 835 }
 836
 837
 838 static void bluecard_detach(struct pcmcia_device *link)
 839 {
 840         bluecard_release(link);
 841 }
 842
 843
 844 static int bluecard_config(struct pcmcia_device *link)
 845 {
 846         struct bluecard_info *info = link->priv;
 847         int i, n;
 848
 849         link->config_index = 0x20;
 850
 851         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 852         link->resource[0]->end = 64;
 853         link->io_lines = 6;
 854
 855         for (n = 0; n < 0x400; n += 0x40) {
 856                 link->resource[0]->start = n ^ 0x300;
 857                 i = pcmcia_request_io(link);
 858                 if (i == 0)
 859                         break;
 860         }
 861
 862         if (i != 0)
 863                 goto failed;
 864
 865         i = pcmcia_request_irq(link, bluecard_interrupt);
 866         if (i != 0)
 867                 goto failed;
 868
 869         i = pcmcia_enable_device(link);
 870         if (i != 0)
 871                 goto failed;
 872
 873         if (bluecard_open(info) != 0)
 874                 goto failed;
 875
 876         return 0;
 877
 878 failed:
 879         bluecard_release(link);
 880         return -ENODEV;
 881 }
 882
 883
 884 static void bluecard_release(struct pcmcia_device *link)
 885 {
 886         struct bluecard_info *info = link->priv;
 887
 888         bluecard_close(info);
 889
 890         del_timer_sync(&(info->timer));
 891
 892         pcmcia_disable_device(link);
 893 }
 894
 895 static const struct pcmcia_device_id bluecard_ids[] = {
 896         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 897         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 898         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 899         PCMCIA_DEVICE_NULL
 900 };
 901 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 902
 903 static struct pcmcia_driver bluecard_driver = {
 904         .owner          = THIS_MODULE,
 905         .name           = "bluecard_cs",
 906         .probe          = bluecard_probe,
 907         .remove         = bluecard_detach,
 908         .id_table       = bluecard_ids,
 909 };
 910 module_pcmcia_driver(bluecard_driver);