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                 if (!(skb = skb_dequeue(&(info->txq))))
 261                         break;
 262
 263                 if (bt_cb(skb)->pkt_type & 0x80) {
 264                         /* Disable RTS */
 265                         info->ctrl_reg |= REG_CONTROL_RTS;
 266                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 267                 }
 268
 269                 /* Activate LED */
 270                 bluecard_enable_activity_led(info);
 271
 272                 /* Send frame */
 273                 len = bluecard_write(iobase, offset, skb->data, skb->len);
 274
 275                 /* Tell the FPGA to send the data */
 276                 outb_p(command, iobase + REG_COMMAND);
 277
 278                 /* Mark the buffer as dirty */
 279                 clear_bit(ready_bit, &(info->tx_state));
 280
 281                 if (bt_cb(skb)->pkt_type & 0x80) {
 282                         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 283                         DEFINE_WAIT(wait);
 284
 285                         unsigned char baud_reg;
 286
 287                         switch (bt_cb(skb)->pkt_type) {
 288                         case PKT_BAUD_RATE_460800:
 289                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 290                                 break;
 291                         case PKT_BAUD_RATE_230400:
 292                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 293                                 break;
 294                         case PKT_BAUD_RATE_115200:
 295                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 296                                 break;
 297                         case PKT_BAUD_RATE_57600:
 298                                 /* Fall through... */
 299                         default:
 300                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 301                                 break;
 302                         }
 303
 304                         /* Wait until the command reaches the baseband */
 305                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 306                         schedule_timeout(HZ/10);
 307                         finish_wait(&wq, &wait);
 308
 309                         /* Set baud on baseband */
 310                         info->ctrl_reg &= ~0x03;
 311                         info->ctrl_reg |= baud_reg;
 312                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 313
 314                         /* Enable RTS */
 315                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 316                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 317
 318                         /* Wait before the next HCI packet can be send */
 319                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 320                         schedule_timeout(HZ);
 321                         finish_wait(&wq, &wait);
 322                 }
 323
 324                 if (len == skb->len) {
 325                         kfree_skb(skb);
 326                 } else {
 327                         skb_pull(skb, len);
 328                         skb_queue_head(&(info->txq), skb);
 329                 }
 330
 331                 info->hdev->stat.byte_tx += len;
 332
 333                 /* Change buffer */
 334                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 335
 336         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 337
 338         clear_bit(XMIT_SENDING, &(info->tx_state));
 339 }
 340
 341
 342 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 343 {
 344         int i, n, len;
 345
 346         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 347
 348         len = inb(iobase + offset);
 349         n = 0;
 350         i = 1;
 351
 352         while (n < len) {
 353
 354                 if (i == 16) {
 355                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 356                         i = 0;
 357                 }
 358
 359                 buf[n] = inb(iobase + offset + i);
 360
 361                 n++;
 362                 i++;
 363
 364         }
 365
 366         return len;
 367 }
 368
 369
 370 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 371 {
 372         unsigned int iobase;
 373         unsigned char buf[31];
 374         int i, len;
 375
 376         if (!info) {
 377                 BT_ERR("Unknown device");
 378                 return;
 379         }
 380
 381         iobase = info->p_dev->resource[0]->start;
 382
 383         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 384                 bluecard_enable_activity_led(info);
 385
 386         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 387
 388         for (i = 0; i < len; i++) {
 389
 390                 /* Allocate packet */
 391                 if (info->rx_skb == NULL) {
 392                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 393                         info->rx_count = 0;
 394                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 395                                 BT_ERR("Can't allocate mem for new packet");
 396                                 return;
 397                         }
 398                 }
 399
 400                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 401
 402                         bt_cb(info->rx_skb)->pkt_type = buf[i];
 403
 404                         switch (bt_cb(info->rx_skb)->pkt_type) {
 405
 406                         case 0x00:
 407                                 /* init packet */
 408                                 if (offset != 0x00) {
 409                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 410                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 411                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 412                                         bluecard_write_wakeup(info);
 413                                 }
 414
 415                                 kfree_skb(info->rx_skb);
 416                                 info->rx_skb = NULL;
 417                                 break;
 418
 419                         case HCI_EVENT_PKT:
 420                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 421                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 422                                 break;
 423
 424                         case HCI_ACLDATA_PKT:
 425                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 426                                 info->rx_count = HCI_ACL_HDR_SIZE;
 427                                 break;
 428
 429                         case HCI_SCODATA_PKT:
 430                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 431                                 info->rx_count = HCI_SCO_HDR_SIZE;
 432                                 break;
 433
 434                         default:
 435                                 /* unknown packet */
 436                                 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
 437                                 info->hdev->stat.err_rx++;
 438
 439                                 kfree_skb(info->rx_skb);
 440                                 info->rx_skb = NULL;
 441                                 break;
 442
 443                         }
 444
 445                 } else {
 446
 447                         *skb_put(info->rx_skb, 1) = buf[i];
 448                         info->rx_count--;
 449
 450                         if (info->rx_count == 0) {
 451
 452                                 int dlen;
 453                                 struct hci_event_hdr *eh;
 454                                 struct hci_acl_hdr *ah;
 455                                 struct hci_sco_hdr *sh;
 456
 457                                 switch (info->rx_state) {
 458
 459                                 case RECV_WAIT_EVENT_HEADER:
 460                                         eh = hci_event_hdr(info->rx_skb);
 461                                         info->rx_state = RECV_WAIT_DATA;
 462                                         info->rx_count = eh->plen;
 463                                         break;
 464
 465                                 case RECV_WAIT_ACL_HEADER:
 466                                         ah = hci_acl_hdr(info->rx_skb);
 467                                         dlen = __le16_to_cpu(ah->dlen);
 468                                         info->rx_state = RECV_WAIT_DATA;
 469                                         info->rx_count = dlen;
 470                                         break;
 471
 472                                 case RECV_WAIT_SCO_HEADER:
 473                                         sh = hci_sco_hdr(info->rx_skb);
 474                                         info->rx_state = RECV_WAIT_DATA;
 475                                         info->rx_count = sh->dlen;
 476                                         break;
 477
 478                                 case RECV_WAIT_DATA:
 479                                         hci_recv_frame(info->hdev, info->rx_skb);
 480                                         info->rx_skb = NULL;
 481                                         break;
 482
 483                                 }
 484
 485                         }
 486
 487                 }
 488
 489
 490         }
 491
 492         info->hdev->stat.byte_rx += len;
 493 }
 494
 495
 496 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 497 {
 498         bluecard_info_t *info = dev_inst;
 499         unsigned int iobase;
 500         unsigned char reg;
 501
 502         if (!info || !info->hdev)
 503                 /* our irq handler is shared */
 504                 return IRQ_NONE;
 505
 506         if (!test_bit(CARD_READY, &(info->hw_state)))
 507                 return IRQ_HANDLED;
 508
 509         iobase = info->p_dev->resource[0]->start;
 510
 511         spin_lock(&(info->lock));
 512
 513         /* Disable interrupt */
 514         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 515         outb(info->ctrl_reg, iobase + REG_CONTROL);
 516
 517         reg = inb(iobase + REG_INTERRUPT);
 518
 519         if ((reg != 0x00) && (reg != 0xff)) {
 520
 521                 if (reg & 0x04) {
 522                         bluecard_receive(info, 0x00);
 523                         outb(0x04, iobase + REG_INTERRUPT);
 524                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 525                 }
 526
 527                 if (reg & 0x08) {
 528                         bluecard_receive(info, 0x10);
 529                         outb(0x08, iobase + REG_INTERRUPT);
 530                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 531                 }
 532
 533                 if (reg & 0x01) {
 534                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 535                         outb(0x01, iobase + REG_INTERRUPT);
 536                         bluecard_write_wakeup(info);
 537                 }
 538
 539                 if (reg & 0x02) {
 540                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 541                         outb(0x02, iobase + REG_INTERRUPT);
 542                         bluecard_write_wakeup(info);
 543                 }
 544
 545         }
 546
 547         /* Enable interrupt */
 548         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 549         outb(info->ctrl_reg, iobase + REG_CONTROL);
 550
 551         spin_unlock(&(info->lock));
 552
 553         return IRQ_HANDLED;
 554 }
 555
 556
 557
 558 /* ======================== Device specific HCI commands ======================== */
 559
 560
 561 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 562 {
 563         bluecard_info_t *info = hci_get_drvdata(hdev);
 564         struct sk_buff *skb;
 565
 566         /* Ericsson baud rate command */
 567         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 568
 569         if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 570                 BT_ERR("Can't allocate mem for new packet");
 571                 return -1;
 572         }
 573
 574         switch (baud) {
 575         case 460800:
 576                 cmd[4] = 0x00;
 577                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
 578                 break;
 579         case 230400:
 580                 cmd[4] = 0x01;
 581                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
 582                 break;
 583         case 115200:
 584                 cmd[4] = 0x02;
 585                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
 586                 break;
 587         case 57600:
 588                 /* Fall through... */
 589         default:
 590                 cmd[4] = 0x03;
 591                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
 592                 break;
 593         }
 594
 595         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 596
 597         skb_queue_tail(&(info->txq), skb);
 598
 599         bluecard_write_wakeup(info);
 600
 601         return 0;
 602 }
 603
 604
 605
 606 /* ======================== HCI interface ======================== */
 607
 608
 609 static int bluecard_hci_flush(struct hci_dev *hdev)
 610 {
 611         bluecard_info_t *info = hci_get_drvdata(hdev);
 612
 613         /* Drop TX queue */
 614         skb_queue_purge(&(info->txq));
 615
 616         return 0;
 617 }
 618
 619
 620 static int bluecard_hci_open(struct hci_dev *hdev)
 621 {
 622         bluecard_info_t *info = hci_get_drvdata(hdev);
 623
 624         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 625                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 626
 627         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
 628                 return 0;
 629
 630         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 631                 unsigned int iobase = info->p_dev->resource[0]->start;
 632
 633                 /* Enable LED */
 634                 outb(0x08 | 0x20, iobase + 0x30);
 635         }
 636
 637         return 0;
 638 }
 639
 640
 641 static int bluecard_hci_close(struct hci_dev *hdev)
 642 {
 643         bluecard_info_t *info = hci_get_drvdata(hdev);
 644
 645         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 646                 return 0;
 647
 648         bluecard_hci_flush(hdev);
 649
 650         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 651                 unsigned int iobase = info->p_dev->resource[0]->start;
 652
 653                 /* Disable LED */
 654                 outb(0x00, iobase + 0x30);
 655         }
 656
 657         return 0;
 658 }
 659
 660
 661 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 662 {
 663         bluecard_info_t *info = hci_get_drvdata(hdev);
 664
 665         switch (bt_cb(skb)->pkt_type) {
 666         case HCI_COMMAND_PKT:
 667                 hdev->stat.cmd_tx++;
 668                 break;
 669         case HCI_ACLDATA_PKT:
 670                 hdev->stat.acl_tx++;
 671                 break;
 672         case HCI_SCODATA_PKT:
 673                 hdev->stat.sco_tx++;
 674                 break;
 675         }
 676
 677         /* Prepend skb with frame type */
 678         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 679         skb_queue_tail(&(info->txq), skb);
 680
 681         bluecard_write_wakeup(info);
 682
 683         return 0;
 684 }
 685
 686
 687
 688 /* ======================== Card services HCI interaction ======================== */
 689
 690
 691 static int bluecard_open(bluecard_info_t *info)
 692 {
 693         unsigned int iobase = info->p_dev->resource[0]->start;
 694         struct hci_dev *hdev;
 695         unsigned char id;
 696
 697         spin_lock_init(&(info->lock));
 698
 699         init_timer(&(info->timer));
 700         info->timer.function = &bluecard_activity_led_timeout;
 701         info->timer.data = (u_long)info;
 702
 703         skb_queue_head_init(&(info->txq));
 704
 705         info->rx_state = RECV_WAIT_PACKET_TYPE;
 706         info->rx_count = 0;
 707         info->rx_skb = NULL;
 708
 709         /* Initialize HCI device */
 710         hdev = hci_alloc_dev();
 711         if (!hdev) {
 712                 BT_ERR("Can't allocate HCI device");
 713                 return -ENOMEM;
 714         }
 715
 716         info->hdev = hdev;
 717
 718         hdev->bus = HCI_PCCARD;
 719         hci_set_drvdata(hdev, info);
 720         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 721
 722         hdev->open  = bluecard_hci_open;
 723         hdev->close = bluecard_hci_close;
 724         hdev->flush = bluecard_hci_flush;
 725         hdev->send  = bluecard_hci_send_frame;
 726
 727         id = inb(iobase + 0x30);
 728
 729         if ((id & 0x0f) == 0x02)
 730                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 731
 732         if (id & 0x10)
 733                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 734
 735         if (id & 0x20)
 736                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 737
 738         /* Reset card */
 739         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 740         outb(info->ctrl_reg, iobase + REG_CONTROL);
 741
 742         /* Turn FPGA off */
 743         outb(0x80, iobase + 0x30);
 744
 745         /* Wait some time */
 746         msleep(10);
 747
 748         /* Turn FPGA on */
 749         outb(0x00, iobase + 0x30);
 750
 751         /* Activate card */
 752         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 753         outb(info->ctrl_reg, iobase + REG_CONTROL);
 754
 755         /* Enable interrupt */
 756         outb(0xff, iobase + REG_INTERRUPT);
 757         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 758         outb(info->ctrl_reg, iobase + REG_CONTROL);
 759
 760         if ((id & 0x0f) == 0x03) {
 761                 /* Disable RTS */
 762                 info->ctrl_reg |= REG_CONTROL_RTS;
 763                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 764
 765                 /* Set baud rate */
 766                 info->ctrl_reg |= 0x03;
 767                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 768
 769                 /* Enable RTS */
 770                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 771                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 772
 773                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 774                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 775                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 776         }
 777
 778         /* Start the RX buffers */
 779         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 780         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 781
 782         /* Signal that the hardware is ready */
 783         set_bit(CARD_READY, &(info->hw_state));
 784
 785         /* Drop TX queue */
 786         skb_queue_purge(&(info->txq));
 787
 788         /* Control the point at which RTS is enabled */
 789         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 790
 791         /* Timeout before it is safe to send the first HCI packet */
 792         msleep(1250);
 793
 794         /* Register HCI device */
 795         if (hci_register_dev(hdev) < 0) {
 796                 BT_ERR("Can't register HCI device");
 797                 info->hdev = NULL;
 798                 hci_free_dev(hdev);
 799                 return -ENODEV;
 800         }
 801
 802         return 0;
 803 }
 804
 805
 806 static int bluecard_close(bluecard_info_t *info)
 807 {
 808         unsigned int iobase = info->p_dev->resource[0]->start;
 809         struct hci_dev *hdev = info->hdev;
 810
 811         if (!hdev)
 812                 return -ENODEV;
 813
 814         bluecard_hci_close(hdev);
 815
 816         clear_bit(CARD_READY, &(info->hw_state));
 817
 818         /* Reset card */
 819         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 820         outb(info->ctrl_reg, iobase + REG_CONTROL);
 821
 822         /* Turn FPGA off */
 823         outb(0x80, iobase + 0x30);
 824
 825         hci_unregister_dev(hdev);
 826         hci_free_dev(hdev);
 827
 828         return 0;
 829 }
 830
 831 static int bluecard_probe(struct pcmcia_device *link)
 832 {
 833         bluecard_info_t *info;
 834
 835         /* Create new info device */
 836         info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
 837         if (!info)
 838                 return -ENOMEM;
 839
 840         info->p_dev = link;
 841         link->priv = info;
 842
 843         link->config_flags |= CONF_ENABLE_IRQ;
 844
 845         return bluecard_config(link);
 846 }
 847
 848
 849 static void bluecard_detach(struct pcmcia_device *link)
 850 {
 851         bluecard_release(link);
 852 }
 853
 854
 855 static int bluecard_config(struct pcmcia_device *link)
 856 {
 857         bluecard_info_t *info = link->priv;
 858         int i, n;
 859
 860         link->config_index = 0x20;
 861
 862         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 863         link->resource[0]->end = 64;
 864         link->io_lines = 6;
 865
 866         for (n = 0; n < 0x400; n += 0x40) {
 867                 link->resource[0]->start = n ^ 0x300;
 868                 i = pcmcia_request_io(link);
 869                 if (i == 0)
 870                         break;
 871         }
 872
 873         if (i != 0)
 874                 goto failed;
 875
 876         i = pcmcia_request_irq(link, bluecard_interrupt);
 877         if (i != 0)
 878                 goto failed;
 879
 880         i = pcmcia_enable_device(link);
 881         if (i != 0)
 882                 goto failed;
 883
 884         if (bluecard_open(info) != 0)
 885                 goto failed;
 886
 887         return 0;
 888
 889 failed:
 890         bluecard_release(link);
 891         return -ENODEV;
 892 }
 893
 894
 895 static void bluecard_release(struct pcmcia_device *link)
 896 {
 897         bluecard_info_t *info = link->priv;
 898
 899         bluecard_close(info);
 900
 901         del_timer(&(info->timer));
 902
 903         pcmcia_disable_device(link);
 904 }
 905
 906 static const struct pcmcia_device_id bluecard_ids[] = {
 907         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 908         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 909         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 910         PCMCIA_DEVICE_NULL
 911 };
 912 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 913
 914 static struct pcmcia_driver bluecard_driver = {
 915         .owner          = THIS_MODULE,
 916         .name           = "bluecard_cs",
 917         .probe          = bluecard_probe,
 918         .remove         = bluecard_detach,
 919         .id_table       = bluecard_ids,
 920 };
 921 module_pcmcia_driver(bluecard_driver);