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/cs.h>
  43 #include <pcmcia/cistpl.h>
  44 #include <pcmcia/ciscode.h>
  45 #include <pcmcia/ds.h>
  46 #include <pcmcia/cisreg.h>
  47
  48 #include <net/bluetooth/bluetooth.h>
  49 #include <net/bluetooth/hci_core.h>
  50
  51
  52
  53 /* ======================== Module parameters ======================== */
  54
  55
  56 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  57 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
  58 MODULE_LICENSE("GPL");
  59
  60
  61
  62 /* ======================== Local structures ======================== */
  63
  64
  65 typedef struct bluecard_info_t {
  66         struct pcmcia_device *p_dev;
  67
  68         struct hci_dev *hdev;
  69
  70         spinlock_t lock;                /* For serializing operations */
  71         struct timer_list timer;        /* For LED control */
  72
  73         struct sk_buff_head txq;
  74         unsigned long tx_state;
  75
  76         unsigned long rx_state;
  77         unsigned long rx_count;
  78         struct sk_buff *rx_skb;
  79
  80         unsigned char ctrl_reg;
  81         unsigned long hw_state;         /* Status of the hardware and LED control */
  82 } bluecard_info_t;
  83
  84
  85 static int bluecard_config(struct pcmcia_device *link);
  86 static void bluecard_release(struct pcmcia_device *link);
  87
  88 static void bluecard_detach(struct pcmcia_device *p_dev);
  89
  90
  91 /* Default baud rate: 57600, 115200, 230400 or 460800 */
  92 #define DEFAULT_BAUD_RATE  230400
  93
  94
  95 /* Hardware states */
  96 #define CARD_READY             1
  97 #define CARD_HAS_PCCARD_ID     4
  98 #define CARD_HAS_POWER_LED     5
  99 #define CARD_HAS_ACTIVITY_LED  6
 100
 101 /* Transmit states  */
 102 #define XMIT_SENDING         1
 103 #define XMIT_WAKEUP          2
 104 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 105 #define XMIT_BUF_ONE_READY   6
 106 #define XMIT_BUF_TWO_READY   7
 107 #define XMIT_SENDING_READY   8
 108
 109 /* Receiver states */
 110 #define RECV_WAIT_PACKET_TYPE   0
 111 #define RECV_WAIT_EVENT_HEADER  1
 112 #define RECV_WAIT_ACL_HEADER    2
 113 #define RECV_WAIT_SCO_HEADER    3
 114 #define RECV_WAIT_DATA          4
 115
 116 /* Special packet types */
 117 #define PKT_BAUD_RATE_57600   0x80
 118 #define PKT_BAUD_RATE_115200  0x81
 119 #define PKT_BAUD_RATE_230400  0x82
 120 #define PKT_BAUD_RATE_460800  0x83
 121
 122
 123 /* These are the register offsets */
 124 #define REG_COMMAND     0x20
 125 #define REG_INTERRUPT   0x21
 126 #define REG_CONTROL     0x22
 127 #define REG_RX_CONTROL  0x24
 128 #define REG_CARD_RESET  0x30
 129 #define REG_LED_CTRL    0x30
 130
 131 /* REG_COMMAND */
 132 #define REG_COMMAND_TX_BUF_ONE  0x01
 133 #define REG_COMMAND_TX_BUF_TWO  0x02
 134 #define REG_COMMAND_RX_BUF_ONE  0x04
 135 #define REG_COMMAND_RX_BUF_TWO  0x08
 136 #define REG_COMMAND_RX_WIN_ONE  0x00
 137 #define REG_COMMAND_RX_WIN_TWO  0x10
 138
 139 /* REG_CONTROL */
 140 #define REG_CONTROL_BAUD_RATE_57600   0x00
 141 #define REG_CONTROL_BAUD_RATE_115200  0x01
 142 #define REG_CONTROL_BAUD_RATE_230400  0x02
 143 #define REG_CONTROL_BAUD_RATE_460800  0x03
 144 #define REG_CONTROL_RTS               0x04
 145 #define REG_CONTROL_BT_ON             0x08
 146 #define REG_CONTROL_BT_RESET          0x10
 147 #define REG_CONTROL_BT_RES_PU         0x20
 148 #define REG_CONTROL_INTERRUPT         0x40
 149 #define REG_CONTROL_CARD_RESET        0x80
 150
 151 /* REG_RX_CONTROL */
 152 #define RTS_LEVEL_SHIFT_BITS  0x02
 153
 154
 155
 156 /* ======================== LED handling routines ======================== */
 157
 158
 159 static void bluecard_activity_led_timeout(u_long arg)
 160 {
 161         bluecard_info_t *info = (bluecard_info_t *)arg;
 162         unsigned int iobase = info->p_dev->resource[0]->start;
 163
 164         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 165                 return;
 166
 167         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 168                 /* Disable activity LED */
 169                 outb(0x08 | 0x20, iobase + 0x30);
 170         } else {
 171                 /* Disable power LED */
 172                 outb(0x00, iobase + 0x30);
 173         }
 174 }
 175
 176
 177 static void bluecard_enable_activity_led(bluecard_info_t *info)
 178 {
 179         unsigned int iobase = info->p_dev->resource[0]->start;
 180
 181         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 182                 return;
 183
 184         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 185                 /* Enable activity LED */
 186                 outb(0x10 | 0x40, iobase + 0x30);
 187
 188                 /* Stop the LED after HZ/4 */
 189                 mod_timer(&(info->timer), jiffies + HZ / 4);
 190         } else {
 191                 /* Enable power LED */
 192                 outb(0x08 | 0x20, iobase + 0x30);
 193
 194                 /* Stop the LED after HZ/2 */
 195                 mod_timer(&(info->timer), jiffies + HZ / 2);
 196         }
 197 }
 198
 199
 200
 201 /* ======================== Interrupt handling ======================== */
 202
 203
 204 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 205 {
 206         int i, actual;
 207
 208         actual = (len > 15) ? 15 : len;
 209
 210         outb_p(actual, iobase + offset);
 211
 212         for (i = 0; i < actual; i++)
 213                 outb_p(buf[i], iobase + offset + i + 1);
 214
 215         return actual;
 216 }
 217
 218
 219 static void bluecard_write_wakeup(bluecard_info_t *info)
 220 {
 221         if (!info) {
 222                 BT_ERR("Unknown device");
 223                 return;
 224         }
 225
 226         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 227                 return;
 228
 229         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 230                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 231                 return;
 232         }
 233
 234         do {
 235                 register unsigned int iobase = info->p_dev->resource[0]->start;
 236                 register unsigned int offset;
 237                 register unsigned char command;
 238                 register unsigned long ready_bit;
 239                 register struct sk_buff *skb;
 240                 register int len;
 241
 242                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 243
 244                 if (!pcmcia_dev_present(info->p_dev))
 245                         return;
 246
 247                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 248                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 249                                 break;
 250                         offset = 0x10;
 251                         command = REG_COMMAND_TX_BUF_TWO;
 252                         ready_bit = XMIT_BUF_TWO_READY;
 253                 } else {
 254                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 255                                 break;
 256                         offset = 0x00;
 257                         command = REG_COMMAND_TX_BUF_ONE;
 258                         ready_bit = XMIT_BUF_ONE_READY;
 259                 }
 260
 261                 if (!(skb = skb_dequeue(&(info->txq))))
 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                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 396                                 BT_ERR("Can't allocate mem for new packet");
 397                                 return;
 398                         }
 399                 }
 400
 401                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 402
 403                         info->rx_skb->dev = (void *) info->hdev;
 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->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 = (bluecard_info_t *)(hdev->driver_data);
 566         struct sk_buff *skb;
 567
 568         /* Ericsson baud rate command */
 569         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 570
 571         if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 572                 BT_ERR("Can't allocate mem for new packet");
 573                 return -1;
 574         }
 575
 576         switch (baud) {
 577         case 460800:
 578                 cmd[4] = 0x00;
 579                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
 580                 break;
 581         case 230400:
 582                 cmd[4] = 0x01;
 583                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
 584                 break;
 585         case 115200:
 586                 cmd[4] = 0x02;
 587                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
 588                 break;
 589         case 57600:
 590                 /* Fall through... */
 591         default:
 592                 cmd[4] = 0x03;
 593                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
 594                 break;
 595         }
 596
 597         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 598
 599         skb_queue_tail(&(info->txq), skb);
 600
 601         bluecard_write_wakeup(info);
 602
 603         return 0;
 604 }
 605
 606
 607
 608 /* ======================== HCI interface ======================== */
 609
 610
 611 static int bluecard_hci_flush(struct hci_dev *hdev)
 612 {
 613         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 614
 615         /* Drop TX queue */
 616         skb_queue_purge(&(info->txq));
 617
 618         return 0;
 619 }
 620
 621
 622 static int bluecard_hci_open(struct hci_dev *hdev)
 623 {
 624         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 625         unsigned int iobase = info->p_dev->resource[0]->start;
 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                 /* Enable LED */
 635                 outb(0x08 | 0x20, iobase + 0x30);
 636         }
 637
 638         return 0;
 639 }
 640
 641
 642 static int bluecard_hci_close(struct hci_dev *hdev)
 643 {
 644         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 645         unsigned int iobase = info->p_dev->resource[0]->start;
 646
 647         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 648                 return 0;
 649
 650         bluecard_hci_flush(hdev);
 651
 652         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 653                 /* Disable LED */
 654                 outb(0x00, iobase + 0x30);
 655         }
 656
 657         return 0;
 658 }
 659
 660
 661 static int bluecard_hci_send_frame(struct sk_buff *skb)
 662 {
 663         bluecard_info_t *info;
 664         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 665
 666         if (!hdev) {
 667                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 668                 return -ENODEV;
 669         }
 670
 671         info = (bluecard_info_t *)(hdev->driver_data);
 672
 673         switch (bt_cb(skb)->pkt_type) {
 674         case HCI_COMMAND_PKT:
 675                 hdev->stat.cmd_tx++;
 676                 break;
 677         case HCI_ACLDATA_PKT:
 678                 hdev->stat.acl_tx++;
 679                 break;
 680         case HCI_SCODATA_PKT:
 681                 hdev->stat.sco_tx++;
 682                 break;
 683         };
 684
 685         /* Prepend skb with frame type */
 686         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 687         skb_queue_tail(&(info->txq), skb);
 688
 689         bluecard_write_wakeup(info);
 690
 691         return 0;
 692 }
 693
 694
 695 static void bluecard_hci_destruct(struct hci_dev *hdev)
 696 {
 697 }
 698
 699
 700 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 701 {
 702         return -ENOIOCTLCMD;
 703 }
 704
 705
 706
 707 /* ======================== Card services HCI interaction ======================== */
 708
 709
 710 static int bluecard_open(bluecard_info_t *info)
 711 {
 712         unsigned int iobase = info->p_dev->resource[0]->start;
 713         struct hci_dev *hdev;
 714         unsigned char id;
 715
 716         spin_lock_init(&(info->lock));
 717
 718         init_timer(&(info->timer));
 719         info->timer.function = &bluecard_activity_led_timeout;
 720         info->timer.data = (u_long)info;
 721
 722         skb_queue_head_init(&(info->txq));
 723
 724         info->rx_state = RECV_WAIT_PACKET_TYPE;
 725         info->rx_count = 0;
 726         info->rx_skb = NULL;
 727
 728         /* Initialize HCI device */
 729         hdev = hci_alloc_dev();
 730         if (!hdev) {
 731                 BT_ERR("Can't allocate HCI device");
 732                 return -ENOMEM;
 733         }
 734
 735         info->hdev = hdev;
 736
 737         hdev->bus = HCI_PCCARD;
 738         hdev->driver_data = info;
 739         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 740
 741         hdev->open     = bluecard_hci_open;
 742         hdev->close    = bluecard_hci_close;
 743         hdev->flush    = bluecard_hci_flush;
 744         hdev->send     = bluecard_hci_send_frame;
 745         hdev->destruct = bluecard_hci_destruct;
 746         hdev->ioctl    = bluecard_hci_ioctl;
 747
 748         hdev->owner = THIS_MODULE;
 749
 750         id = inb(iobase + 0x30);
 751
 752         if ((id & 0x0f) == 0x02)
 753                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 754
 755         if (id & 0x10)
 756                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 757
 758         if (id & 0x20)
 759                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 760
 761         /* Reset card */
 762         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 763         outb(info->ctrl_reg, iobase + REG_CONTROL);
 764
 765         /* Turn FPGA off */
 766         outb(0x80, iobase + 0x30);
 767
 768         /* Wait some time */
 769         msleep(10);
 770
 771         /* Turn FPGA on */
 772         outb(0x00, iobase + 0x30);
 773
 774         /* Activate card */
 775         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 776         outb(info->ctrl_reg, iobase + REG_CONTROL);
 777
 778         /* Enable interrupt */
 779         outb(0xff, iobase + REG_INTERRUPT);
 780         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 781         outb(info->ctrl_reg, iobase + REG_CONTROL);
 782
 783         if ((id & 0x0f) == 0x03) {
 784                 /* Disable RTS */
 785                 info->ctrl_reg |= REG_CONTROL_RTS;
 786                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 787
 788                 /* Set baud rate */
 789                 info->ctrl_reg |= 0x03;
 790                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 791
 792                 /* Enable RTS */
 793                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 794                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 795
 796                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 797                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 798                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 799         }
 800
 801         /* Start the RX buffers */
 802         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 803         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 804
 805         /* Signal that the hardware is ready */
 806         set_bit(CARD_READY, &(info->hw_state));
 807
 808         /* Drop TX queue */
 809         skb_queue_purge(&(info->txq));
 810
 811         /* Control the point at which RTS is enabled */
 812         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 813
 814         /* Timeout before it is safe to send the first HCI packet */
 815         msleep(1250);
 816
 817         /* Register HCI device */
 818         if (hci_register_dev(hdev) < 0) {
 819                 BT_ERR("Can't register HCI device");
 820                 info->hdev = NULL;
 821                 hci_free_dev(hdev);
 822                 return -ENODEV;
 823         }
 824
 825         return 0;
 826 }
 827
 828
 829 static int bluecard_close(bluecard_info_t *info)
 830 {
 831         unsigned int iobase = info->p_dev->resource[0]->start;
 832         struct hci_dev *hdev = info->hdev;
 833
 834         if (!hdev)
 835                 return -ENODEV;
 836
 837         bluecard_hci_close(hdev);
 838
 839         clear_bit(CARD_READY, &(info->hw_state));
 840
 841         /* Reset card */
 842         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 843         outb(info->ctrl_reg, iobase + REG_CONTROL);
 844
 845         /* Turn FPGA off */
 846         outb(0x80, iobase + 0x30);
 847
 848         if (hci_unregister_dev(hdev) < 0)
 849                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 850
 851         hci_free_dev(hdev);
 852
 853         return 0;
 854 }
 855
 856 static int bluecard_probe(struct pcmcia_device *link)
 857 {
 858         bluecard_info_t *info;
 859
 860         /* Create new info device */
 861         info = kzalloc(sizeof(*info), GFP_KERNEL);
 862         if (!info)
 863                 return -ENOMEM;
 864
 865         info->p_dev = link;
 866         link->priv = info;
 867
 868         link->conf.Attributes = CONF_ENABLE_IRQ;
 869         link->conf.IntType = INT_MEMORY_AND_IO;
 870
 871         return bluecard_config(link);
 872 }
 873
 874
 875 static void bluecard_detach(struct pcmcia_device *link)
 876 {
 877         bluecard_info_t *info = link->priv;
 878
 879         bluecard_release(link);
 880         kfree(info);
 881 }
 882
 883
 884 static int bluecard_config(struct pcmcia_device *link)
 885 {
 886         bluecard_info_t *info = link->priv;
 887         int i, n;
 888
 889         link->conf.ConfigIndex = 0x20;
 890
 891         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 892         link->resource[0]->end = 64;
 893         link->io_lines = 6;
 894
 895         for (n = 0; n < 0x400; n += 0x40) {
 896                 link->resource[0]->start = n ^ 0x300;
 897                 i = pcmcia_request_io(link);
 898                 if (i == 0)
 899                         break;
 900         }
 901
 902         if (i != 0)
 903                 goto failed;
 904
 905         i = pcmcia_request_irq(link, bluecard_interrupt);
 906         if (i != 0)
 907                 goto failed;
 908
 909         i = pcmcia_request_configuration(link, &link->conf);
 910         if (i != 0)
 911                 goto failed;
 912
 913         if (bluecard_open(info) != 0)
 914                 goto failed;
 915
 916         return 0;
 917
 918 failed:
 919         bluecard_release(link);
 920         return -ENODEV;
 921 }
 922
 923
 924 static void bluecard_release(struct pcmcia_device *link)
 925 {
 926         bluecard_info_t *info = link->priv;
 927
 928         bluecard_close(info);
 929
 930         del_timer(&(info->timer));
 931
 932         pcmcia_disable_device(link);
 933 }
 934
 935 static struct pcmcia_device_id bluecard_ids[] = {
 936         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 937         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 938         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 939         PCMCIA_DEVICE_NULL
 940 };
 941 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 942
 943 static struct pcmcia_driver bluecard_driver = {
 944         .owner          = THIS_MODULE,
 945         .drv            = {
 946                 .name   = "bluecard_cs",
 947         },
 948         .probe          = bluecard_probe,
 949         .remove         = bluecard_detach,
 950         .id_table       = bluecard_ids,
 951 };
 952
 953 static int __init init_bluecard_cs(void)
 954 {
 955         return pcmcia_register_driver(&bluecard_driver);
 956 }
 957
 958
 959 static void __exit exit_bluecard_cs(void)
 960 {
 961         pcmcia_unregister_driver(&bluecard_driver);
 962 }
 963
 964 module_init(init_bluecard_cs);
 965 module_exit(exit_bluecard_cs);