drivers/bluetooth/bluecard_cs.c

   1 /*
   2  *
   3  *  Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
   4  *
   5  *  Copyright (C) 2001-2002  Marcel Holtmann <[email protected]>
   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  *  <[email protected]>.  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 <[email protected]>");
  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_ACTIVITY          2
  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(struct timer_list *t)
 160 {
 161         struct bluecard_info *info = from_timer(info, t, timer);
 162         unsigned int iobase = info->p_dev->resource[0]->start;
 163
 164         if (test_bit(CARD_ACTIVITY, &(info->hw_state))) {
 165                 /* leave LED in inactive state for HZ/10 for blink effect */
 166                 clear_bit(CARD_ACTIVITY, &(info->hw_state));
 167                 mod_timer(&(info->timer), jiffies + HZ / 10);
 168         }
 169
 170         /* Disable activity LED, enable power LED */
 171         outb(0x08 | 0x20, iobase + 0x30);
 172 }
 173
 174
 175 static void bluecard_enable_activity_led(struct bluecard_info *info)
 176 {
 177         unsigned int iobase = info->p_dev->resource[0]->start;
 178
 179         /* don't disturb running blink timer */
 180         if (timer_pending(&(info->timer)))
 181                 return;
 182
 183         set_bit(CARD_ACTIVITY, &(info->hw_state));
 184
 185         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 186                 /* Enable activity LED, keep power LED enabled */
 187                 outb(0x18 | 0x60, iobase + 0x30);
 188         } else {
 189                 /* Disable power LED */
 190                 outb(0x00, iobase + 0x30);
 191         }
 192
 193         /* Stop the LED after HZ/10 */
 194         mod_timer(&(info->timer), jiffies + HZ / 10);
 195 }
 196
 197
 198
 199 /* ======================== Interrupt handling ======================== */
 200
 201
 202 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 203 {
 204         int i, actual;
 205
 206         actual = (len > 15) ? 15 : len;
 207
 208         outb_p(actual, iobase + offset);
 209
 210         for (i = 0; i < actual; i++)
 211                 outb_p(buf[i], iobase + offset + i + 1);
 212
 213         return actual;
 214 }
 215
 216
 217 static void bluecard_write_wakeup(struct bluecard_info *info)
 218 {
 219         if (!info) {
 220                 BT_ERR("Unknown device");
 221                 return;
 222         }
 223
 224         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 225                 return;
 226
 227         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 228                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 229                 return;
 230         }
 231
 232         do {
 233                 unsigned int iobase = info->p_dev->resource[0]->start;
 234                 unsigned int offset;
 235                 unsigned char command;
 236                 unsigned long ready_bit;
 237                 register struct sk_buff *skb;
 238                 int len;
 239
 240                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 241
 242                 if (!pcmcia_dev_present(info->p_dev))
 243                         return;
 244
 245                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 246                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 247                                 break;
 248                         offset = 0x10;
 249                         command = REG_COMMAND_TX_BUF_TWO;
 250                         ready_bit = XMIT_BUF_TWO_READY;
 251                 } else {
 252                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 253                                 break;
 254                         offset = 0x00;
 255                         command = REG_COMMAND_TX_BUF_ONE;
 256                         ready_bit = XMIT_BUF_ONE_READY;
 257                 }
 258
 259                 skb = skb_dequeue(&(info->txq));
 260                 if (!skb)
 261                         break;
 262
 263                 if (hci_skb_pkt_type(skb) & 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 (hci_skb_pkt_type(skb) & 0x80) {
 282                         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 283                         DEFINE_WAIT(wait);
 284
 285                         unsigned char baud_reg;
 286
 287                         switch (hci_skb_pkt_type(skb)) {
 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(struct bluecard_info *info,
 371                              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) {
 393                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 394                         info->rx_count = 0;
 395                         info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 396                         if (!info->rx_skb) {
 397                                 BT_ERR("Can't allocate mem for new packet");
 398                                 return;
 399                         }
 400                 }
 401
 402                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 403
 404                         hci_skb_pkt_type(info->rx_skb) = buf[i];
 405
 406                         switch (hci_skb_pkt_type(info->rx_skb)) {
 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",
 439                                        hci_skb_pkt_type(info->rx_skb));
 440                                 info->hdev->stat.err_rx++;
 441
 442                                 kfree_skb(info->rx_skb);
 443                                 info->rx_skb = NULL;
 444                                 break;
 445
 446                         }
 447
 448                 } else {
 449
 450                         skb_put_u8(info->rx_skb, buf[i]);
 451                         info->rx_count--;
 452
 453                         if (info->rx_count == 0) {
 454
 455                                 int dlen;
 456                                 struct hci_event_hdr *eh;
 457                                 struct hci_acl_hdr *ah;
 458                                 struct hci_sco_hdr *sh;
 459
 460                                 switch (info->rx_state) {
 461
 462                                 case RECV_WAIT_EVENT_HEADER:
 463                                         eh = hci_event_hdr(info->rx_skb);
 464                                         info->rx_state = RECV_WAIT_DATA;
 465                                         info->rx_count = eh->plen;
 466                                         break;
 467
 468                                 case RECV_WAIT_ACL_HEADER:
 469                                         ah = hci_acl_hdr(info->rx_skb);
 470                                         dlen = __le16_to_cpu(ah->dlen);
 471                                         info->rx_state = RECV_WAIT_DATA;
 472                                         info->rx_count = dlen;
 473                                         break;
 474
 475                                 case RECV_WAIT_SCO_HEADER:
 476                                         sh = hci_sco_hdr(info->rx_skb);
 477                                         info->rx_state = RECV_WAIT_DATA;
 478                                         info->rx_count = sh->dlen;
 479                                         break;
 480
 481                                 case RECV_WAIT_DATA:
 482                                         hci_recv_frame(info->hdev, info->rx_skb);
 483                                         info->rx_skb = NULL;
 484                                         break;
 485
 486                                 }
 487
 488                         }
 489
 490                 }
 491
 492
 493         }
 494
 495         info->hdev->stat.byte_rx += len;
 496 }
 497
 498
 499 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 500 {
 501         struct bluecard_info *info = dev_inst;
 502         unsigned int iobase;
 503         unsigned char reg;
 504
 505         if (!info || !info->hdev)
 506                 /* our irq handler is shared */
 507                 return IRQ_NONE;
 508
 509         if (!test_bit(CARD_READY, &(info->hw_state)))
 510                 return IRQ_HANDLED;
 511
 512         iobase = info->p_dev->resource[0]->start;
 513
 514         spin_lock(&(info->lock));
 515
 516         /* Disable interrupt */
 517         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 518         outb(info->ctrl_reg, iobase + REG_CONTROL);
 519
 520         reg = inb(iobase + REG_INTERRUPT);
 521
 522         if ((reg != 0x00) && (reg != 0xff)) {
 523
 524                 if (reg & 0x04) {
 525                         bluecard_receive(info, 0x00);
 526                         outb(0x04, iobase + REG_INTERRUPT);
 527                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 528                 }
 529
 530                 if (reg & 0x08) {
 531                         bluecard_receive(info, 0x10);
 532                         outb(0x08, iobase + REG_INTERRUPT);
 533                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 534                 }
 535
 536                 if (reg & 0x01) {
 537                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 538                         outb(0x01, iobase + REG_INTERRUPT);
 539                         bluecard_write_wakeup(info);
 540                 }
 541
 542                 if (reg & 0x02) {
 543                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 544                         outb(0x02, iobase + REG_INTERRUPT);
 545                         bluecard_write_wakeup(info);
 546                 }
 547
 548         }
 549
 550         /* Enable interrupt */
 551         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 552         outb(info->ctrl_reg, iobase + REG_CONTROL);
 553
 554         spin_unlock(&(info->lock));
 555
 556         return IRQ_HANDLED;
 557 }
 558
 559
 560
 561 /* ======================== Device specific HCI commands ======================== */
 562
 563
 564 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 565 {
 566         struct bluecard_info *info = hci_get_drvdata(hdev);
 567         struct sk_buff *skb;
 568
 569         /* Ericsson baud rate command */
 570         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 571
 572         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 573         if (!skb) {
 574                 BT_ERR("Can't allocate mem for new packet");
 575                 return -1;
 576         }
 577
 578         switch (baud) {
 579         case 460800:
 580                 cmd[4] = 0x00;
 581                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
 582                 break;
 583         case 230400:
 584                 cmd[4] = 0x01;
 585                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
 586                 break;
 587         case 115200:
 588                 cmd[4] = 0x02;
 589                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
 590                 break;
 591         case 57600:
 592                 /* Fall through... */
 593         default:
 594                 cmd[4] = 0x03;
 595                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
 596                 break;
 597         }
 598
 599         skb_put_data(skb, cmd, sizeof(cmd));
 600
 601         skb_queue_tail(&(info->txq), skb);
 602
 603         bluecard_write_wakeup(info);
 604
 605         return 0;
 606 }
 607
 608
 609
 610 /* ======================== HCI interface ======================== */
 611
 612
 613 static int bluecard_hci_flush(struct hci_dev *hdev)
 614 {
 615         struct bluecard_info *info = hci_get_drvdata(hdev);
 616
 617         /* Drop TX queue */
 618         skb_queue_purge(&(info->txq));
 619
 620         return 0;
 621 }
 622
 623
 624 static int bluecard_hci_open(struct hci_dev *hdev)
 625 {
 626         struct bluecard_info *info = hci_get_drvdata(hdev);
 627         unsigned int iobase = info->p_dev->resource[0]->start;
 628
 629         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 630                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 631
 632         /* Enable power LED */
 633         outb(0x08 | 0x20, iobase + 0x30);
 634
 635         return 0;
 636 }
 637
 638
 639 static int bluecard_hci_close(struct hci_dev *hdev)
 640 {
 641         struct bluecard_info *info = hci_get_drvdata(hdev);
 642         unsigned int iobase = info->p_dev->resource[0]->start;
 643
 644         bluecard_hci_flush(hdev);
 645
 646         /* Stop LED timer */
 647         del_timer_sync(&(info->timer));
 648
 649         /* Disable power LED */
 650         outb(0x00, iobase + 0x30);
 651
 652         return 0;
 653 }
 654
 655
 656 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 657 {
 658         struct bluecard_info *info = hci_get_drvdata(hdev);
 659
 660         switch (hci_skb_pkt_type(skb)) {
 661         case HCI_COMMAND_PKT:
 662                 hdev->stat.cmd_tx++;
 663                 break;
 664         case HCI_ACLDATA_PKT:
 665                 hdev->stat.acl_tx++;
 666                 break;
 667         case HCI_SCODATA_PKT:
 668                 hdev->stat.sco_tx++;
 669                 break;
 670         }
 671
 672         /* Prepend skb with frame type */
 673         memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
 674         skb_queue_tail(&(info->txq), skb);
 675
 676         bluecard_write_wakeup(info);
 677
 678         return 0;
 679 }
 680
 681
 682
 683 /* ======================== Card services HCI interaction ======================== */
 684
 685
 686 static int bluecard_open(struct bluecard_info *info)
 687 {
 688         unsigned int iobase = info->p_dev->resource[0]->start;
 689         struct hci_dev *hdev;
 690         unsigned char id;
 691
 692         spin_lock_init(&(info->lock));
 693
 694         timer_setup(&info->timer, bluecard_activity_led_timeout, 0);
 695
 696         skb_queue_head_init(&(info->txq));
 697
 698         info->rx_state = RECV_WAIT_PACKET_TYPE;
 699         info->rx_count = 0;
 700         info->rx_skb = NULL;
 701
 702         /* Initialize HCI device */
 703         hdev = hci_alloc_dev();
 704         if (!hdev) {
 705                 BT_ERR("Can't allocate HCI device");
 706                 return -ENOMEM;
 707         }
 708
 709         info->hdev = hdev;
 710
 711         hdev->bus = HCI_PCCARD;
 712         hci_set_drvdata(hdev, info);
 713         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 714
 715         hdev->open  = bluecard_hci_open;
 716         hdev->close = bluecard_hci_close;
 717         hdev->flush = bluecard_hci_flush;
 718         hdev->send  = bluecard_hci_send_frame;
 719
 720         id = inb(iobase + 0x30);
 721
 722         if ((id & 0x0f) == 0x02)
 723                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 724
 725         if (id & 0x10)
 726                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 727
 728         if (id & 0x20)
 729                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 730
 731         /* Reset card */
 732         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 733         outb(info->ctrl_reg, iobase + REG_CONTROL);
 734
 735         /* Turn FPGA off */
 736         outb(0x80, iobase + 0x30);
 737
 738         /* Wait some time */
 739         msleep(10);
 740
 741         /* Turn FPGA on */
 742         outb(0x00, iobase + 0x30);
 743
 744         /* Activate card */
 745         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 746         outb(info->ctrl_reg, iobase + REG_CONTROL);
 747
 748         /* Enable interrupt */
 749         outb(0xff, iobase + REG_INTERRUPT);
 750         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 751         outb(info->ctrl_reg, iobase + REG_CONTROL);
 752
 753         if ((id & 0x0f) == 0x03) {
 754                 /* Disable RTS */
 755                 info->ctrl_reg |= REG_CONTROL_RTS;
 756                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 757
 758                 /* Set baud rate */
 759                 info->ctrl_reg |= 0x03;
 760                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 761
 762                 /* Enable RTS */
 763                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 764                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 765
 766                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 767                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 768                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 769         }
 770
 771         /* Start the RX buffers */
 772         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 773         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 774
 775         /* Signal that the hardware is ready */
 776         set_bit(CARD_READY, &(info->hw_state));
 777
 778         /* Drop TX queue */
 779         skb_queue_purge(&(info->txq));
 780
 781         /* Control the point at which RTS is enabled */
 782         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 783
 784         /* Timeout before it is safe to send the first HCI packet */
 785         msleep(1250);
 786
 787         /* Register HCI device */
 788         if (hci_register_dev(hdev) < 0) {
 789                 BT_ERR("Can't register HCI device");
 790                 info->hdev = NULL;
 791                 hci_free_dev(hdev);
 792                 return -ENODEV;
 793         }
 794
 795         return 0;
 796 }
 797
 798
 799 static int bluecard_close(struct bluecard_info *info)
 800 {
 801         unsigned int iobase = info->p_dev->resource[0]->start;
 802         struct hci_dev *hdev = info->hdev;
 803
 804         if (!hdev)
 805                 return -ENODEV;
 806
 807         bluecard_hci_close(hdev);
 808
 809         clear_bit(CARD_READY, &(info->hw_state));
 810
 811         /* Reset card */
 812         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 813         outb(info->ctrl_reg, iobase + REG_CONTROL);
 814
 815         /* Turn FPGA off */
 816         outb(0x80, iobase + 0x30);
 817
 818         hci_unregister_dev(hdev);
 819         hci_free_dev(hdev);
 820
 821         return 0;
 822 }
 823
 824 static int bluecard_probe(struct pcmcia_device *link)
 825 {
 826         struct bluecard_info *info;
 827
 828         /* Create new info device */
 829         info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
 830         if (!info)
 831                 return -ENOMEM;
 832
 833         info->p_dev = link;
 834         link->priv = info;
 835
 836         link->config_flags |= CONF_ENABLE_IRQ;
 837
 838         return bluecard_config(link);
 839 }
 840
 841
 842 static void bluecard_detach(struct pcmcia_device *link)
 843 {
 844         bluecard_release(link);
 845 }
 846
 847
 848 static int bluecard_config(struct pcmcia_device *link)
 849 {
 850         struct bluecard_info *info = link->priv;
 851         int i, n;
 852
 853         link->config_index = 0x20;
 854
 855         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 856         link->resource[0]->end = 64;
 857         link->io_lines = 6;
 858
 859         for (n = 0; n < 0x400; n += 0x40) {
 860                 link->resource[0]->start = n ^ 0x300;
 861                 i = pcmcia_request_io(link);
 862                 if (i == 0)
 863                         break;
 864         }
 865
 866         if (i != 0)
 867                 goto failed;
 868
 869         i = pcmcia_request_irq(link, bluecard_interrupt);
 870         if (i != 0)
 871                 goto failed;
 872
 873         i = pcmcia_enable_device(link);
 874         if (i != 0)
 875                 goto failed;
 876
 877         if (bluecard_open(info) != 0)
 878                 goto failed;
 879
 880         return 0;
 881
 882 failed:
 883         bluecard_release(link);
 884         return -ENODEV;
 885 }
 886
 887
 888 static void bluecard_release(struct pcmcia_device *link)
 889 {
 890         struct bluecard_info *info = link->priv;
 891
 892         bluecard_close(info);
 893
 894         del_timer_sync(&(info->timer));
 895
 896         pcmcia_disable_device(link);
 897 }
 898
 899 static const struct pcmcia_device_id bluecard_ids[] = {
 900         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 901         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 902         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 903         PCMCIA_DEVICE_NULL
 904 };
 905 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 906
 907 static struct pcmcia_driver bluecard_driver = {
 908         .owner          = THIS_MODULE,
 909         .name           = "bluecard_cs",
 910         .probe          = bluecard_probe,
 911         .remove         = bluecard_detach,
 912         .id_table       = bluecard_ids,
 913 };
 914 module_pcmcia_driver(bluecard_driver);