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_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         struct bluecard_info *info = (struct bluecard_info *)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(struct bluecard_info *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(struct bluecard_info *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 (hci_skb_pkt_type(skb) & 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 (hci_skb_pkt_type(skb) & 0x80) {
 283                         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 284                         DEFINE_WAIT(wait);
 285
 286                         unsigned char baud_reg;
 287
 288                         switch (hci_skb_pkt_type(skb)) {
 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(struct bluecard_info *info,
 372                              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->resource[0]->start;
 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) {
 394                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 395                         info->rx_count = 0;
 396                         info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 397                         if (!info->rx_skb) {
 398                                 BT_ERR("Can't allocate mem for new packet");
 399                                 return;
 400                         }
 401                 }
 402
 403                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 404
 405                         hci_skb_pkt_type(info->rx_skb) = buf[i];
 406
 407                         switch (hci_skb_pkt_type(info->rx_skb)) {
 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",
 440                                        hci_skb_pkt_type(info->rx_skb));
 441                                 info->hdev->stat.err_rx++;
 442
 443                                 kfree_skb(info->rx_skb);
 444                                 info->rx_skb = NULL;
 445                                 break;
 446
 447                         }
 448
 449                 } else {
 450
 451                         *skb_put(info->rx_skb, 1) = buf[i];
 452                         info->rx_count--;
 453
 454                         if (info->rx_count == 0) {
 455
 456                                 int dlen;
 457                                 struct hci_event_hdr *eh;
 458                                 struct hci_acl_hdr *ah;
 459                                 struct hci_sco_hdr *sh;
 460
 461                                 switch (info->rx_state) {
 462
 463                                 case RECV_WAIT_EVENT_HEADER:
 464                                         eh = hci_event_hdr(info->rx_skb);
 465                                         info->rx_state = RECV_WAIT_DATA;
 466                                         info->rx_count = eh->plen;
 467                                         break;
 468
 469                                 case RECV_WAIT_ACL_HEADER:
 470                                         ah = hci_acl_hdr(info->rx_skb);
 471                                         dlen = __le16_to_cpu(ah->dlen);
 472                                         info->rx_state = RECV_WAIT_DATA;
 473                                         info->rx_count = dlen;
 474                                         break;
 475
 476                                 case RECV_WAIT_SCO_HEADER:
 477                                         sh = hci_sco_hdr(info->rx_skb);
 478                                         info->rx_state = RECV_WAIT_DATA;
 479                                         info->rx_count = sh->dlen;
 480                                         break;
 481
 482                                 case RECV_WAIT_DATA:
 483                                         hci_recv_frame(info->hdev, info->rx_skb);
 484                                         info->rx_skb = NULL;
 485                                         break;
 486
 487                                 }
 488
 489                         }
 490
 491                 }
 492
 493
 494         }
 495
 496         info->hdev->stat.byte_rx += len;
 497 }
 498
 499
 500 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 501 {
 502         struct bluecard_info *info = dev_inst;
 503         unsigned int iobase;
 504         unsigned char reg;
 505
 506         if (!info || !info->hdev)
 507                 /* our irq handler is shared */
 508                 return IRQ_NONE;
 509
 510         if (!test_bit(CARD_READY, &(info->hw_state)))
 511                 return IRQ_HANDLED;
 512
 513         iobase = info->p_dev->resource[0]->start;
 514
 515         spin_lock(&(info->lock));
 516
 517         /* Disable interrupt */
 518         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 519         outb(info->ctrl_reg, iobase + REG_CONTROL);
 520
 521         reg = inb(iobase + REG_INTERRUPT);
 522
 523         if ((reg != 0x00) && (reg != 0xff)) {
 524
 525                 if (reg & 0x04) {
 526                         bluecard_receive(info, 0x00);
 527                         outb(0x04, iobase + REG_INTERRUPT);
 528                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 529                 }
 530
 531                 if (reg & 0x08) {
 532                         bluecard_receive(info, 0x10);
 533                         outb(0x08, iobase + REG_INTERRUPT);
 534                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 535                 }
 536
 537                 if (reg & 0x01) {
 538                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 539                         outb(0x01, iobase + REG_INTERRUPT);
 540                         bluecard_write_wakeup(info);
 541                 }
 542
 543                 if (reg & 0x02) {
 544                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 545                         outb(0x02, iobase + REG_INTERRUPT);
 546                         bluecard_write_wakeup(info);
 547                 }
 548
 549         }
 550
 551         /* Enable interrupt */
 552         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 553         outb(info->ctrl_reg, iobase + REG_CONTROL);
 554
 555         spin_unlock(&(info->lock));
 556
 557         return IRQ_HANDLED;
 558 }
 559
 560
 561
 562 /* ======================== Device specific HCI commands ======================== */
 563
 564
 565 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 566 {
 567         struct bluecard_info *info = hci_get_drvdata(hdev);
 568         struct sk_buff *skb;
 569
 570         /* Ericsson baud rate command */
 571         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 572
 573         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 574         if (!skb) {
 575                 BT_ERR("Can't allocate mem for new packet");
 576                 return -1;
 577         }
 578
 579         switch (baud) {
 580         case 460800:
 581                 cmd[4] = 0x00;
 582                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
 583                 break;
 584         case 230400:
 585                 cmd[4] = 0x01;
 586                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
 587                 break;
 588         case 115200:
 589                 cmd[4] = 0x02;
 590                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
 591                 break;
 592         case 57600:
 593                 /* Fall through... */
 594         default:
 595                 cmd[4] = 0x03;
 596                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
 597                 break;
 598         }
 599
 600         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 601
 602         skb_queue_tail(&(info->txq), skb);
 603
 604         bluecard_write_wakeup(info);
 605
 606         return 0;
 607 }
 608
 609
 610
 611 /* ======================== HCI interface ======================== */
 612
 613
 614 static int bluecard_hci_flush(struct hci_dev *hdev)
 615 {
 616         struct bluecard_info *info = hci_get_drvdata(hdev);
 617
 618         /* Drop TX queue */
 619         skb_queue_purge(&(info->txq));
 620
 621         return 0;
 622 }
 623
 624
 625 static int bluecard_hci_open(struct hci_dev *hdev)
 626 {
 627         struct bluecard_info *info = hci_get_drvdata(hdev);
 628
 629         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 630                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 631
 632         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 633                 unsigned int iobase = info->p_dev->resource[0]->start;
 634
 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         struct bluecard_info *info = hci_get_drvdata(hdev);
 646
 647         bluecard_hci_flush(hdev);
 648
 649         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 650                 unsigned int iobase = info->p_dev->resource[0]->start;
 651
 652                 /* Disable LED */
 653                 outb(0x00, iobase + 0x30);
 654         }
 655
 656         return 0;
 657 }
 658
 659
 660 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 661 {
 662         struct bluecard_info *info = hci_get_drvdata(hdev);
 663
 664         switch (hci_skb_pkt_type(skb)) {
 665         case HCI_COMMAND_PKT:
 666                 hdev->stat.cmd_tx++;
 667                 break;
 668         case HCI_ACLDATA_PKT:
 669                 hdev->stat.acl_tx++;
 670                 break;
 671         case HCI_SCODATA_PKT:
 672                 hdev->stat.sco_tx++;
 673                 break;
 674         }
 675
 676         /* Prepend skb with frame type */
 677         memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
 678         skb_queue_tail(&(info->txq), skb);
 679
 680         bluecard_write_wakeup(info);
 681
 682         return 0;
 683 }
 684
 685
 686
 687 /* ======================== Card services HCI interaction ======================== */
 688
 689
 690 static int bluecard_open(struct bluecard_info *info)
 691 {
 692         unsigned int iobase = info->p_dev->resource[0]->start;
 693         struct hci_dev *hdev;
 694         unsigned char id;
 695
 696         spin_lock_init(&(info->lock));
 697
 698         init_timer(&(info->timer));
 699         info->timer.function = &bluecard_activity_led_timeout;
 700         info->timer.data = (u_long)info;
 701
 702         skb_queue_head_init(&(info->txq));
 703
 704         info->rx_state = RECV_WAIT_PACKET_TYPE;
 705         info->rx_count = 0;
 706         info->rx_skb = NULL;
 707
 708         /* Initialize HCI device */
 709         hdev = hci_alloc_dev();
 710         if (!hdev) {
 711                 BT_ERR("Can't allocate HCI device");
 712                 return -ENOMEM;
 713         }
 714
 715         info->hdev = hdev;
 716
 717         hdev->bus = HCI_PCCARD;
 718         hci_set_drvdata(hdev, info);
 719         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 720
 721         hdev->open  = bluecard_hci_open;
 722         hdev->close = bluecard_hci_close;
 723         hdev->flush = bluecard_hci_flush;
 724         hdev->send  = bluecard_hci_send_frame;
 725
 726         id = inb(iobase + 0x30);
 727
 728         if ((id & 0x0f) == 0x02)
 729                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 730
 731         if (id & 0x10)
 732                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 733
 734         if (id & 0x20)
 735                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 736
 737         /* Reset card */
 738         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 739         outb(info->ctrl_reg, iobase + REG_CONTROL);
 740
 741         /* Turn FPGA off */
 742         outb(0x80, iobase + 0x30);
 743
 744         /* Wait some time */
 745         msleep(10);
 746
 747         /* Turn FPGA on */
 748         outb(0x00, iobase + 0x30);
 749
 750         /* Activate card */
 751         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 752         outb(info->ctrl_reg, iobase + REG_CONTROL);
 753
 754         /* Enable interrupt */
 755         outb(0xff, iobase + REG_INTERRUPT);
 756         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 757         outb(info->ctrl_reg, iobase + REG_CONTROL);
 758
 759         if ((id & 0x0f) == 0x03) {
 760                 /* Disable RTS */
 761                 info->ctrl_reg |= REG_CONTROL_RTS;
 762                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 763
 764                 /* Set baud rate */
 765                 info->ctrl_reg |= 0x03;
 766                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 767
 768                 /* Enable RTS */
 769                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 770                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 771
 772                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 773                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 774                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 775         }
 776
 777         /* Start the RX buffers */
 778         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 779         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 780
 781         /* Signal that the hardware is ready */
 782         set_bit(CARD_READY, &(info->hw_state));
 783
 784         /* Drop TX queue */
 785         skb_queue_purge(&(info->txq));
 786
 787         /* Control the point at which RTS is enabled */
 788         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 789
 790         /* Timeout before it is safe to send the first HCI packet */
 791         msleep(1250);
 792
 793         /* Register HCI device */
 794         if (hci_register_dev(hdev) < 0) {
 795                 BT_ERR("Can't register HCI device");
 796                 info->hdev = NULL;
 797                 hci_free_dev(hdev);
 798                 return -ENODEV;
 799         }
 800
 801         return 0;
 802 }
 803
 804
 805 static int bluecard_close(struct bluecard_info *info)
 806 {
 807         unsigned int iobase = info->p_dev->resource[0]->start;
 808         struct hci_dev *hdev = info->hdev;
 809
 810         if (!hdev)
 811                 return -ENODEV;
 812
 813         bluecard_hci_close(hdev);
 814
 815         clear_bit(CARD_READY, &(info->hw_state));
 816
 817         /* Reset card */
 818         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 819         outb(info->ctrl_reg, iobase + REG_CONTROL);
 820
 821         /* Turn FPGA off */
 822         outb(0x80, iobase + 0x30);
 823
 824         hci_unregister_dev(hdev);
 825         hci_free_dev(hdev);
 826
 827         return 0;
 828 }
 829
 830 static int bluecard_probe(struct pcmcia_device *link)
 831 {
 832         struct bluecard_info *info;
 833
 834         /* Create new info device */
 835         info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
 836         if (!info)
 837                 return -ENOMEM;
 838
 839         info->p_dev = link;
 840         link->priv = info;
 841
 842         link->config_flags |= CONF_ENABLE_IRQ;
 843
 844         return bluecard_config(link);
 845 }
 846
 847
 848 static void bluecard_detach(struct pcmcia_device *link)
 849 {
 850         bluecard_release(link);
 851 }
 852
 853
 854 static int bluecard_config(struct pcmcia_device *link)
 855 {
 856         struct bluecard_info *info = link->priv;
 857         int i, n;
 858
 859         link->config_index = 0x20;
 860
 861         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 862         link->resource[0]->end = 64;
 863         link->io_lines = 6;
 864
 865         for (n = 0; n < 0x400; n += 0x40) {
 866                 link->resource[0]->start = n ^ 0x300;
 867                 i = pcmcia_request_io(link);
 868                 if (i == 0)
 869                         break;
 870         }
 871
 872         if (i != 0)
 873                 goto failed;
 874
 875         i = pcmcia_request_irq(link, bluecard_interrupt);
 876         if (i != 0)
 877                 goto failed;
 878
 879         i = pcmcia_enable_device(link);
 880         if (i != 0)
 881                 goto failed;
 882
 883         if (bluecard_open(info) != 0)
 884                 goto failed;
 885
 886         return 0;
 887
 888 failed:
 889         bluecard_release(link);
 890         return -ENODEV;
 891 }
 892
 893
 894 static void bluecard_release(struct pcmcia_device *link)
 895 {
 896         struct bluecard_info *info = link->priv;
 897
 898         bluecard_close(info);
 899
 900         del_timer_sync(&(info->timer));
 901
 902         pcmcia_disable_device(link);
 903 }
 904
 905 static const struct pcmcia_device_id bluecard_ids[] = {
 906         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 907         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 908         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 909         PCMCIA_DEVICE_NULL
 910 };
 911 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 912
 913 static struct pcmcia_driver bluecard_driver = {
 914         .owner          = THIS_MODULE,
 915         .name           = "bluecard_cs",
 916         .probe          = bluecard_probe,
 917         .remove         = bluecard_detach,
 918         .id_table       = bluecard_ids,
 919 };
 920 module_pcmcia_driver(bluecard_driver);