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