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 <asm/io.h>
  41
  42 #include <pcmcia/cs_types.h>
  43 #include <pcmcia/cs.h>
  44 #include <pcmcia/cistpl.h>
  45 #include <pcmcia/ciscode.h>
  46 #include <pcmcia/ds.h>
  47 #include <pcmcia/cisreg.h>
  48
  49 #include <net/bluetooth/bluetooth.h>
  50 #include <net/bluetooth/hci_core.h>
  51
  52
  53
  54 /* ======================== Module parameters ======================== */
  55
  56
  57 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  58 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
  59 MODULE_LICENSE("GPL");
  60
  61
  62
  63 /* ======================== Local structures ======================== */
  64
  65
  66 typedef struct bluecard_info_t {
  67         struct pcmcia_device *p_dev;
  68
  69         struct hci_dev *hdev;
  70
  71         spinlock_t lock;                /* For serializing operations */
  72         struct timer_list timer;        /* For LED control */
  73
  74         struct sk_buff_head txq;
  75         unsigned long tx_state;
  76
  77         unsigned long rx_state;
  78         unsigned long rx_count;
  79         struct sk_buff *rx_skb;
  80
  81         unsigned char ctrl_reg;
  82         unsigned long hw_state;         /* Status of the hardware and LED control */
  83 } bluecard_info_t;
  84
  85
  86 static int bluecard_config(struct pcmcia_device *link);
  87 static void bluecard_release(struct pcmcia_device *link);
  88
  89 static void bluecard_detach(struct pcmcia_device *p_dev);
  90
  91
  92 /* Default baud rate: 57600, 115200, 230400 or 460800 */
  93 #define DEFAULT_BAUD_RATE  230400
  94
  95
  96 /* Hardware states */
  97 #define CARD_READY             1
  98 #define CARD_HAS_PCCARD_ID     4
  99 #define CARD_HAS_POWER_LED     5
 100 #define CARD_HAS_ACTIVITY_LED  6
 101
 102 /* Transmit states  */
 103 #define XMIT_SENDING         1
 104 #define XMIT_WAKEUP          2
 105 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 106 #define XMIT_BUF_ONE_READY   6
 107 #define XMIT_BUF_TWO_READY   7
 108 #define XMIT_SENDING_READY   8
 109
 110 /* Receiver states */
 111 #define RECV_WAIT_PACKET_TYPE   0
 112 #define RECV_WAIT_EVENT_HEADER  1
 113 #define RECV_WAIT_ACL_HEADER    2
 114 #define RECV_WAIT_SCO_HEADER    3
 115 #define RECV_WAIT_DATA          4
 116
 117 /* Special packet types */
 118 #define PKT_BAUD_RATE_57600   0x80
 119 #define PKT_BAUD_RATE_115200  0x81
 120 #define PKT_BAUD_RATE_230400  0x82
 121 #define PKT_BAUD_RATE_460800  0x83
 122
 123
 124 /* These are the register offsets */
 125 #define REG_COMMAND     0x20
 126 #define REG_INTERRUPT   0x21
 127 #define REG_CONTROL     0x22
 128 #define REG_RX_CONTROL  0x24
 129 #define REG_CARD_RESET  0x30
 130 #define REG_LED_CTRL    0x30
 131
 132 /* REG_COMMAND */
 133 #define REG_COMMAND_TX_BUF_ONE  0x01
 134 #define REG_COMMAND_TX_BUF_TWO  0x02
 135 #define REG_COMMAND_RX_BUF_ONE  0x04
 136 #define REG_COMMAND_RX_BUF_TWO  0x08
 137 #define REG_COMMAND_RX_WIN_ONE  0x00
 138 #define REG_COMMAND_RX_WIN_TWO  0x10
 139
 140 /* REG_CONTROL */
 141 #define REG_CONTROL_BAUD_RATE_57600   0x00
 142 #define REG_CONTROL_BAUD_RATE_115200  0x01
 143 #define REG_CONTROL_BAUD_RATE_230400  0x02
 144 #define REG_CONTROL_BAUD_RATE_460800  0x03
 145 #define REG_CONTROL_RTS               0x04
 146 #define REG_CONTROL_BT_ON             0x08
 147 #define REG_CONTROL_BT_RESET          0x10
 148 #define REG_CONTROL_BT_RES_PU         0x20
 149 #define REG_CONTROL_INTERRUPT         0x40
 150 #define REG_CONTROL_CARD_RESET        0x80
 151
 152 /* REG_RX_CONTROL */
 153 #define RTS_LEVEL_SHIFT_BITS  0x02
 154
 155
 156
 157 /* ======================== LED handling routines ======================== */
 158
 159
 160 static void bluecard_activity_led_timeout(u_long arg)
 161 {
 162         bluecard_info_t *info = (bluecard_info_t *)arg;
 163         unsigned int iobase = info->p_dev->io.BasePort1;
 164
 165         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 166                 return;
 167
 168         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 169                 /* Disable activity LED */
 170                 outb(0x08 | 0x20, iobase + 0x30);
 171         } else {
 172                 /* Disable power LED */
 173                 outb(0x00, iobase + 0x30);
 174         }
 175 }
 176
 177
 178 static void bluecard_enable_activity_led(bluecard_info_t *info)
 179 {
 180         unsigned int iobase = info->p_dev->io.BasePort1;
 181
 182         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 183                 return;
 184
 185         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 186                 /* Enable activity LED */
 187                 outb(0x10 | 0x40, iobase + 0x30);
 188
 189                 /* Stop the LED after HZ/4 */
 190                 mod_timer(&(info->timer), jiffies + HZ / 4);
 191         } else {
 192                 /* Enable power LED */
 193                 outb(0x08 | 0x20, iobase + 0x30);
 194
 195                 /* Stop the LED after HZ/2 */
 196                 mod_timer(&(info->timer), jiffies + HZ / 2);
 197         }
 198 }
 199
 200
 201
 202 /* ======================== Interrupt handling ======================== */
 203
 204
 205 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 206 {
 207         int i, actual;
 208
 209         actual = (len > 15) ? 15 : len;
 210
 211         outb_p(actual, iobase + offset);
 212
 213         for (i = 0; i < actual; i++)
 214                 outb_p(buf[i], iobase + offset + i + 1);
 215
 216         return actual;
 217 }
 218
 219
 220 static void bluecard_write_wakeup(bluecard_info_t *info)
 221 {
 222         if (!info) {
 223                 BT_ERR("Unknown device");
 224                 return;
 225         }
 226
 227         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 228                 return;
 229
 230         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 231                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 232                 return;
 233         }
 234
 235         do {
 236                 register unsigned int iobase = info->p_dev->io.BasePort1;
 237                 register unsigned int offset;
 238                 register unsigned char command;
 239                 register unsigned long ready_bit;
 240                 register struct sk_buff *skb;
 241                 register int len;
 242
 243                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 244
 245                 if (!pcmcia_dev_present(info->p_dev))
 246                         return;
 247
 248                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 249                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 250                                 break;
 251                         offset = 0x10;
 252                         command = REG_COMMAND_TX_BUF_TWO;
 253                         ready_bit = XMIT_BUF_TWO_READY;
 254                 } else {
 255                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 256                                 break;
 257                         offset = 0x00;
 258                         command = REG_COMMAND_TX_BUF_ONE;
 259                         ready_bit = XMIT_BUF_ONE_READY;
 260                 }
 261
 262                 if (!(skb = skb_dequeue(&(info->txq))))
 263                         break;
 264
 265                 if (bt_cb(skb)->pkt_type & 0x80) {
 266                         /* Disable RTS */
 267                         info->ctrl_reg |= REG_CONTROL_RTS;
 268                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 269                 }
 270
 271                 /* Activate LED */
 272                 bluecard_enable_activity_led(info);
 273
 274                 /* Send frame */
 275                 len = bluecard_write(iobase, offset, skb->data, skb->len);
 276
 277                 /* Tell the FPGA to send the data */
 278                 outb_p(command, iobase + REG_COMMAND);
 279
 280                 /* Mark the buffer as dirty */
 281                 clear_bit(ready_bit, &(info->tx_state));
 282
 283                 if (bt_cb(skb)->pkt_type & 0x80) {
 284                         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 285                         DEFINE_WAIT(wait);
 286
 287                         unsigned char baud_reg;
 288
 289                         switch (bt_cb(skb)->pkt_type) {
 290                         case PKT_BAUD_RATE_460800:
 291                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 292                                 break;
 293                         case PKT_BAUD_RATE_230400:
 294                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 295                                 break;
 296                         case PKT_BAUD_RATE_115200:
 297                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 298                                 break;
 299                         case PKT_BAUD_RATE_57600:
 300                                 /* Fall through... */
 301                         default:
 302                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 303                                 break;
 304                         }
 305
 306                         /* Wait until the command reaches the baseband */
 307                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 308                         schedule_timeout(HZ/10);
 309                         finish_wait(&wq, &wait);
 310
 311                         /* Set baud on baseband */
 312                         info->ctrl_reg &= ~0x03;
 313                         info->ctrl_reg |= baud_reg;
 314                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 315
 316                         /* Enable RTS */
 317                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 318                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 319
 320                         /* Wait before the next HCI packet can be send */
 321                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 322                         schedule_timeout(HZ);
 323                         finish_wait(&wq, &wait);
 324                 }
 325
 326                 if (len == skb->len) {
 327                         kfree_skb(skb);
 328                 } else {
 329                         skb_pull(skb, len);
 330                         skb_queue_head(&(info->txq), skb);
 331                 }
 332
 333                 info->hdev->stat.byte_tx += len;
 334
 335                 /* Change buffer */
 336                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 337
 338         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 339
 340         clear_bit(XMIT_SENDING, &(info->tx_state));
 341 }
 342
 343
 344 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 345 {
 346         int i, n, len;
 347
 348         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 349
 350         len = inb(iobase + offset);
 351         n = 0;
 352         i = 1;
 353
 354         while (n < len) {
 355
 356                 if (i == 16) {
 357                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 358                         i = 0;
 359                 }
 360
 361                 buf[n] = inb(iobase + offset + i);
 362
 363                 n++;
 364                 i++;
 365
 366         }
 367
 368         return len;
 369 }
 370
 371
 372 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 373 {
 374         unsigned int iobase;
 375         unsigned char buf[31];
 376         int i, len;
 377
 378         if (!info) {
 379                 BT_ERR("Unknown device");
 380                 return;
 381         }
 382
 383         iobase = info->p_dev->io.BasePort1;
 384
 385         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 386                 bluecard_enable_activity_led(info);
 387
 388         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 389
 390         for (i = 0; i < len; i++) {
 391
 392                 /* Allocate packet */
 393                 if (info->rx_skb == NULL) {
 394                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 395                         info->rx_count = 0;
 396                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 397                                 BT_ERR("Can't allocate mem for new packet");
 398                                 return;
 399                         }
 400                 }
 401
 402                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 403
 404                         info->rx_skb->dev = (void *) info->hdev;
 405                         bt_cb(info->rx_skb)->pkt_type = buf[i];
 406
 407                         switch (bt_cb(info->rx_skb)->pkt_type) {
 408
 409                         case 0x00:
 410                                 /* init packet */
 411                                 if (offset != 0x00) {
 412                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 413                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 414                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 415                                         bluecard_write_wakeup(info);
 416                                 }
 417
 418                                 kfree_skb(info->rx_skb);
 419                                 info->rx_skb = NULL;
 420                                 break;
 421
 422                         case HCI_EVENT_PKT:
 423                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 424                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 425                                 break;
 426
 427                         case HCI_ACLDATA_PKT:
 428                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 429                                 info->rx_count = HCI_ACL_HDR_SIZE;
 430                                 break;
 431
 432                         case HCI_SCODATA_PKT:
 433                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 434                                 info->rx_count = HCI_SCO_HDR_SIZE;
 435                                 break;
 436
 437                         default:
 438                                 /* unknown packet */
 439                                 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
 440                                 info->hdev->stat.err_rx++;
 441
 442                                 kfree_skb(info->rx_skb);
 443                                 info->rx_skb = NULL;
 444                                 break;
 445
 446                         }
 447
 448                 } else {
 449
 450                         *skb_put(info->rx_skb, 1) = buf[i];
 451                         info->rx_count--;
 452
 453                         if (info->rx_count == 0) {
 454
 455                                 int dlen;
 456                                 struct hci_event_hdr *eh;
 457                                 struct hci_acl_hdr *ah;
 458                                 struct hci_sco_hdr *sh;
 459
 460                                 switch (info->rx_state) {
 461
 462                                 case RECV_WAIT_EVENT_HEADER:
 463                                         eh = hci_event_hdr(info->rx_skb);
 464                                         info->rx_state = RECV_WAIT_DATA;
 465                                         info->rx_count = eh->plen;
 466                                         break;
 467
 468                                 case RECV_WAIT_ACL_HEADER:
 469                                         ah = hci_acl_hdr(info->rx_skb);
 470                                         dlen = __le16_to_cpu(ah->dlen);
 471                                         info->rx_state = RECV_WAIT_DATA;
 472                                         info->rx_count = dlen;
 473                                         break;
 474
 475                                 case RECV_WAIT_SCO_HEADER:
 476                                         sh = hci_sco_hdr(info->rx_skb);
 477                                         info->rx_state = RECV_WAIT_DATA;
 478                                         info->rx_count = sh->dlen;
 479                                         break;
 480
 481                                 case RECV_WAIT_DATA:
 482                                         hci_recv_frame(info->rx_skb);
 483                                         info->rx_skb = NULL;
 484                                         break;
 485
 486                                 }
 487
 488                         }
 489
 490                 }
 491
 492
 493         }
 494
 495         info->hdev->stat.byte_rx += len;
 496 }
 497
 498
 499 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 500 {
 501         bluecard_info_t *info = dev_inst;
 502         unsigned int iobase;
 503         unsigned char reg;
 504
 505         if (!info || !info->hdev)
 506                 /* our irq handler is shared */
 507                 return IRQ_NONE;
 508
 509         if (!test_bit(CARD_READY, &(info->hw_state)))
 510                 return IRQ_HANDLED;
 511
 512         iobase = info->p_dev->io.BasePort1;
 513
 514         spin_lock(&(info->lock));
 515
 516         /* Disable interrupt */
 517         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 518         outb(info->ctrl_reg, iobase + REG_CONTROL);
 519
 520         reg = inb(iobase + REG_INTERRUPT);
 521
 522         if ((reg != 0x00) && (reg != 0xff)) {
 523
 524                 if (reg & 0x04) {
 525                         bluecard_receive(info, 0x00);
 526                         outb(0x04, iobase + REG_INTERRUPT);
 527                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 528                 }
 529
 530                 if (reg & 0x08) {
 531                         bluecard_receive(info, 0x10);
 532                         outb(0x08, iobase + REG_INTERRUPT);
 533                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 534                 }
 535
 536                 if (reg & 0x01) {
 537                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 538                         outb(0x01, iobase + REG_INTERRUPT);
 539                         bluecard_write_wakeup(info);
 540                 }
 541
 542                 if (reg & 0x02) {
 543                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 544                         outb(0x02, iobase + REG_INTERRUPT);
 545                         bluecard_write_wakeup(info);
 546                 }
 547
 548         }
 549
 550         /* Enable interrupt */
 551         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 552         outb(info->ctrl_reg, iobase + REG_CONTROL);
 553
 554         spin_unlock(&(info->lock));
 555
 556         return IRQ_HANDLED;
 557 }
 558
 559
 560
 561 /* ======================== Device specific HCI commands ======================== */
 562
 563
 564 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 565 {
 566         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 567         struct sk_buff *skb;
 568
 569         /* Ericsson baud rate command */
 570         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 571
 572         if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 573                 BT_ERR("Can't allocate mem for new packet");
 574                 return -1;
 575         }
 576
 577         switch (baud) {
 578         case 460800:
 579                 cmd[4] = 0x00;
 580                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
 581                 break;
 582         case 230400:
 583                 cmd[4] = 0x01;
 584                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
 585                 break;
 586         case 115200:
 587                 cmd[4] = 0x02;
 588                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
 589                 break;
 590         case 57600:
 591                 /* Fall through... */
 592         default:
 593                 cmd[4] = 0x03;
 594                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
 595                 break;
 596         }
 597
 598         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 599
 600         skb_queue_tail(&(info->txq), skb);
 601
 602         bluecard_write_wakeup(info);
 603
 604         return 0;
 605 }
 606
 607
 608
 609 /* ======================== HCI interface ======================== */
 610
 611
 612 static int bluecard_hci_flush(struct hci_dev *hdev)
 613 {
 614         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 615
 616         /* Drop TX queue */
 617         skb_queue_purge(&(info->txq));
 618
 619         return 0;
 620 }
 621
 622
 623 static int bluecard_hci_open(struct hci_dev *hdev)
 624 {
 625         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 626         unsigned int iobase = info->p_dev->io.BasePort1;
 627
 628         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 629                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 630
 631         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
 632                 return 0;
 633
 634         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 635                 /* Enable LED */
 636                 outb(0x08 | 0x20, iobase + 0x30);
 637         }
 638
 639         return 0;
 640 }
 641
 642
 643 static int bluecard_hci_close(struct hci_dev *hdev)
 644 {
 645         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 646         unsigned int iobase = info->p_dev->io.BasePort1;
 647
 648         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 649                 return 0;
 650
 651         bluecard_hci_flush(hdev);
 652
 653         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 654                 /* Disable LED */
 655                 outb(0x00, iobase + 0x30);
 656         }
 657
 658         return 0;
 659 }
 660
 661
 662 static int bluecard_hci_send_frame(struct sk_buff *skb)
 663 {
 664         bluecard_info_t *info;
 665         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 666
 667         if (!hdev) {
 668                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 669                 return -ENODEV;
 670         }
 671
 672         info = (bluecard_info_t *)(hdev->driver_data);
 673
 674         switch (bt_cb(skb)->pkt_type) {
 675         case HCI_COMMAND_PKT:
 676                 hdev->stat.cmd_tx++;
 677                 break;
 678         case HCI_ACLDATA_PKT:
 679                 hdev->stat.acl_tx++;
 680                 break;
 681         case HCI_SCODATA_PKT:
 682                 hdev->stat.sco_tx++;
 683                 break;
 684         };
 685
 686         /* Prepend skb with frame type */
 687         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 688         skb_queue_tail(&(info->txq), skb);
 689
 690         bluecard_write_wakeup(info);
 691
 692         return 0;
 693 }
 694
 695
 696 static void bluecard_hci_destruct(struct hci_dev *hdev)
 697 {
 698 }
 699
 700
 701 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 702 {
 703         return -ENOIOCTLCMD;
 704 }
 705
 706
 707
 708 /* ======================== Card services HCI interaction ======================== */
 709
 710
 711 static int bluecard_open(bluecard_info_t *info)
 712 {
 713         unsigned int iobase = info->p_dev->io.BasePort1;
 714         struct hci_dev *hdev;
 715         unsigned char id;
 716
 717         spin_lock_init(&(info->lock));
 718
 719         init_timer(&(info->timer));
 720         info->timer.function = &bluecard_activity_led_timeout;
 721         info->timer.data = (u_long)info;
 722
 723         skb_queue_head_init(&(info->txq));
 724
 725         info->rx_state = RECV_WAIT_PACKET_TYPE;
 726         info->rx_count = 0;
 727         info->rx_skb = NULL;
 728
 729         /* Initialize HCI device */
 730         hdev = hci_alloc_dev();
 731         if (!hdev) {
 732                 BT_ERR("Can't allocate HCI device");
 733                 return -ENOMEM;
 734         }
 735
 736         info->hdev = hdev;
 737
 738         hdev->bus = HCI_PCCARD;
 739         hdev->driver_data = info;
 740         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 741
 742         hdev->open     = bluecard_hci_open;
 743         hdev->close    = bluecard_hci_close;
 744         hdev->flush    = bluecard_hci_flush;
 745         hdev->send     = bluecard_hci_send_frame;
 746         hdev->destruct = bluecard_hci_destruct;
 747         hdev->ioctl    = bluecard_hci_ioctl;
 748
 749         hdev->owner = THIS_MODULE;
 750
 751         id = inb(iobase + 0x30);
 752
 753         if ((id & 0x0f) == 0x02)
 754                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 755
 756         if (id & 0x10)
 757                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 758
 759         if (id & 0x20)
 760                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 761
 762         /* Reset card */
 763         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 764         outb(info->ctrl_reg, iobase + REG_CONTROL);
 765
 766         /* Turn FPGA off */
 767         outb(0x80, iobase + 0x30);
 768
 769         /* Wait some time */
 770         msleep(10);
 771
 772         /* Turn FPGA on */
 773         outb(0x00, iobase + 0x30);
 774
 775         /* Activate card */
 776         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 777         outb(info->ctrl_reg, iobase + REG_CONTROL);
 778
 779         /* Enable interrupt */
 780         outb(0xff, iobase + REG_INTERRUPT);
 781         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 782         outb(info->ctrl_reg, iobase + REG_CONTROL);
 783
 784         if ((id & 0x0f) == 0x03) {
 785                 /* Disable RTS */
 786                 info->ctrl_reg |= REG_CONTROL_RTS;
 787                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 788
 789                 /* Set baud rate */
 790                 info->ctrl_reg |= 0x03;
 791                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 792
 793                 /* Enable RTS */
 794                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 795                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 796
 797                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 798                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 799                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 800         }
 801
 802         /* Start the RX buffers */
 803         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 804         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 805
 806         /* Signal that the hardware is ready */
 807         set_bit(CARD_READY, &(info->hw_state));
 808
 809         /* Drop TX queue */
 810         skb_queue_purge(&(info->txq));
 811
 812         /* Control the point at which RTS is enabled */
 813         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 814
 815         /* Timeout before it is safe to send the first HCI packet */
 816         msleep(1250);
 817
 818         /* Register HCI device */
 819         if (hci_register_dev(hdev) < 0) {
 820                 BT_ERR("Can't register HCI device");
 821                 info->hdev = NULL;
 822                 hci_free_dev(hdev);
 823                 return -ENODEV;
 824         }
 825
 826         return 0;
 827 }
 828
 829
 830 static int bluecard_close(bluecard_info_t *info)
 831 {
 832         unsigned int iobase = info->p_dev->io.BasePort1;
 833         struct hci_dev *hdev = info->hdev;
 834
 835         if (!hdev)
 836                 return -ENODEV;
 837
 838         bluecard_hci_close(hdev);
 839
 840         clear_bit(CARD_READY, &(info->hw_state));
 841
 842         /* Reset card */
 843         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 844         outb(info->ctrl_reg, iobase + REG_CONTROL);
 845
 846         /* Turn FPGA off */
 847         outb(0x80, iobase + 0x30);
 848
 849         if (hci_unregister_dev(hdev) < 0)
 850                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 851
 852         hci_free_dev(hdev);
 853
 854         return 0;
 855 }
 856
 857 static int bluecard_probe(struct pcmcia_device *link)
 858 {
 859         bluecard_info_t *info;
 860
 861         /* Create new info device */
 862         info = kzalloc(sizeof(*info), GFP_KERNEL);
 863         if (!info)
 864                 return -ENOMEM;
 865
 866         info->p_dev = link;
 867         link->priv = info;
 868
 869         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 870         link->io.NumPorts1 = 8;
 871
 872         link->conf.Attributes = CONF_ENABLE_IRQ;
 873         link->conf.IntType = INT_MEMORY_AND_IO;
 874
 875         return bluecard_config(link);
 876 }
 877
 878
 879 static void bluecard_detach(struct pcmcia_device *link)
 880 {
 881         bluecard_info_t *info = link->priv;
 882
 883         bluecard_release(link);
 884         kfree(info);
 885 }
 886
 887
 888 static int bluecard_config(struct pcmcia_device *link)
 889 {
 890         bluecard_info_t *info = link->priv;
 891         int i, n;
 892
 893         link->conf.ConfigIndex = 0x20;
 894         link->io.NumPorts1 = 64;
 895         link->io.IOAddrLines = 6;
 896
 897         for (n = 0; n < 0x400; n += 0x40) {
 898                 link->io.BasePort1 = n ^ 0x300;
 899                 i = pcmcia_request_io(link, &link->io);
 900                 if (i == 0)
 901                         break;
 902         }
 903
 904         if (i != 0)
 905                 goto failed;
 906
 907         i = pcmcia_request_irq(link, bluecard_interrupt);
 908         if (i != 0)
 909                 goto failed;
 910
 911         i = pcmcia_request_configuration(link, &link->conf);
 912         if (i != 0)
 913                 goto failed;
 914
 915         if (bluecard_open(info) != 0)
 916                 goto failed;
 917
 918         return 0;
 919
 920 failed:
 921         bluecard_release(link);
 922         return -ENODEV;
 923 }
 924
 925
 926 static void bluecard_release(struct pcmcia_device *link)
 927 {
 928         bluecard_info_t *info = link->priv;
 929
 930         bluecard_close(info);
 931
 932         del_timer(&(info->timer));
 933
 934         pcmcia_disable_device(link);
 935 }
 936
 937 static struct pcmcia_device_id bluecard_ids[] = {
 938         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 939         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 940         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 941         PCMCIA_DEVICE_NULL
 942 };
 943 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 944
 945 static struct pcmcia_driver bluecard_driver = {
 946         .owner          = THIS_MODULE,
 947         .drv            = {
 948                 .name   = "bluecard_cs",
 949         },
 950         .probe          = bluecard_probe,
 951         .remove         = bluecard_detach,
 952         .id_table       = bluecard_ids,
 953 };
 954
 955 static int __init init_bluecard_cs(void)
 956 {
 957         return pcmcia_register_driver(&bluecard_driver);
 958 }
 959
 960
 961 static void __exit exit_bluecard_cs(void)
 962 {
 963         pcmcia_unregister_driver(&bluecard_driver);
 964 }
 965
 966 module_init(init_bluecard_cs);
 967 module_exit(exit_bluecard_cs);