linux/drivers/bluetooth/bluecard_cs.c
<<
>>
Prefs
   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
  55MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  56MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
  57MODULE_LICENSE("GPL");
  58
  59
  60
  61/* ======================== Local structures ======================== */
  62
  63
  64struct 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
  84static int bluecard_config(struct pcmcia_device *link);
  85static void bluecard_release(struct pcmcia_device *link);
  86
  87static 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
 159static void bluecard_activity_led_timeout(u_long arg)
 160{
 161        struct bluecard_info *info = (struct bluecard_info *)arg;
 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
 175static 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
 202static 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
 217static 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
 342static 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
 370static 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
 499static 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
 564static 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
 613static 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
 624static 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
 639static 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
 656static 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
 686static 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        setup_timer(&(info->timer), &bluecard_activity_led_timeout,
 695                    (u_long)info);
 696
 697        skb_queue_head_init(&(info->txq));
 698
 699        info->rx_state = RECV_WAIT_PACKET_TYPE;
 700        info->rx_count = 0;
 701        info->rx_skb = NULL;
 702
 703        /* Initialize HCI device */
 704        hdev = hci_alloc_dev();
 705        if (!hdev) {
 706                BT_ERR("Can't allocate HCI device");
 707                return -ENOMEM;
 708        }
 709
 710        info->hdev = hdev;
 711
 712        hdev->bus = HCI_PCCARD;
 713        hci_set_drvdata(hdev, info);
 714        SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 715
 716        hdev->open  = bluecard_hci_open;
 717        hdev->close = bluecard_hci_close;
 718        hdev->flush = bluecard_hci_flush;
 719        hdev->send  = bluecard_hci_send_frame;
 720
 721        id = inb(iobase + 0x30);
 722
 723        if ((id & 0x0f) == 0x02)
 724                set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 725
 726        if (id & 0x10)
 727                set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 728
 729        if (id & 0x20)
 730                set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 731
 732        /* Reset card */
 733        info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 734        outb(info->ctrl_reg, iobase + REG_CONTROL);
 735
 736        /* Turn FPGA off */
 737        outb(0x80, iobase + 0x30);
 738
 739        /* Wait some time */
 740        msleep(10);
 741
 742        /* Turn FPGA on */
 743        outb(0x00, iobase + 0x30);
 744
 745        /* Activate card */
 746        info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 747        outb(info->ctrl_reg, iobase + REG_CONTROL);
 748
 749        /* Enable interrupt */
 750        outb(0xff, iobase + REG_INTERRUPT);
 751        info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 752        outb(info->ctrl_reg, iobase + REG_CONTROL);
 753
 754        if ((id & 0x0f) == 0x03) {
 755                /* Disable RTS */
 756                info->ctrl_reg |= REG_CONTROL_RTS;
 757                outb(info->ctrl_reg, iobase + REG_CONTROL);
 758
 759                /* Set baud rate */
 760                info->ctrl_reg |= 0x03;
 761                outb(info->ctrl_reg, iobase + REG_CONTROL);
 762
 763                /* Enable RTS */
 764                info->ctrl_reg &= ~REG_CONTROL_RTS;
 765                outb(info->ctrl_reg, iobase + REG_CONTROL);
 766
 767                set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 768                set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 769                set_bit(XMIT_SENDING_READY, &(info->tx_state));
 770        }
 771
 772        /* Start the RX buffers */
 773        outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 774        outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 775
 776        /* Signal that the hardware is ready */
 777        set_bit(CARD_READY, &(info->hw_state));
 778
 779        /* Drop TX queue */
 780        skb_queue_purge(&(info->txq));
 781
 782        /* Control the point at which RTS is enabled */
 783        outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 784
 785        /* Timeout before it is safe to send the first HCI packet */
 786        msleep(1250);
 787
 788        /* Register HCI device */
 789        if (hci_register_dev(hdev) < 0) {
 790                BT_ERR("Can't register HCI device");
 791                info->hdev = NULL;
 792                hci_free_dev(hdev);
 793                return -ENODEV;
 794        }
 795
 796        return 0;
 797}
 798
 799
 800static int bluecard_close(struct bluecard_info *info)
 801{
 802        unsigned int iobase = info->p_dev->resource[0]->start;
 803        struct hci_dev *hdev = info->hdev;
 804
 805        if (!hdev)
 806                return -ENODEV;
 807
 808        bluecard_hci_close(hdev);
 809
 810        clear_bit(CARD_READY, &(info->hw_state));
 811
 812        /* Reset card */
 813        info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 814        outb(info->ctrl_reg, iobase + REG_CONTROL);
 815
 816        /* Turn FPGA off */
 817        outb(0x80, iobase + 0x30);
 818
 819        hci_unregister_dev(hdev);
 820        hci_free_dev(hdev);
 821
 822        return 0;
 823}
 824
 825static int bluecard_probe(struct pcmcia_device *link)
 826{
 827        struct bluecard_info *info;
 828
 829        /* Create new info device */
 830        info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
 831        if (!info)
 832                return -ENOMEM;
 833
 834        info->p_dev = link;
 835        link->priv = info;
 836
 837        link->config_flags |= CONF_ENABLE_IRQ;
 838
 839        return bluecard_config(link);
 840}
 841
 842
 843static void bluecard_detach(struct pcmcia_device *link)
 844{
 845        bluecard_release(link);
 846}
 847
 848
 849static int bluecard_config(struct pcmcia_device *link)
 850{
 851        struct bluecard_info *info = link->priv;
 852        int i, n;
 853
 854        link->config_index = 0x20;
 855
 856        link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 857        link->resource[0]->end = 64;
 858        link->io_lines = 6;
 859
 860        for (n = 0; n < 0x400; n += 0x40) {
 861                link->resource[0]->start = n ^ 0x300;
 862                i = pcmcia_request_io(link);
 863                if (i == 0)
 864                        break;
 865        }
 866
 867        if (i != 0)
 868                goto failed;
 869
 870        i = pcmcia_request_irq(link, bluecard_interrupt);
 871        if (i != 0)
 872                goto failed;
 873
 874        i = pcmcia_enable_device(link);
 875        if (i != 0)
 876                goto failed;
 877
 878        if (bluecard_open(info) != 0)
 879                goto failed;
 880
 881        return 0;
 882
 883failed:
 884        bluecard_release(link);
 885        return -ENODEV;
 886}
 887
 888
 889static void bluecard_release(struct pcmcia_device *link)
 890{
 891        struct bluecard_info *info = link->priv;
 892
 893        bluecard_close(info);
 894
 895        del_timer_sync(&(info->timer));
 896
 897        pcmcia_disable_device(link);
 898}
 899
 900static const struct pcmcia_device_id bluecard_ids[] = {
 901        PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 902        PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 903        PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 904        PCMCIA_DEVICE_NULL
 905};
 906MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 907
 908static struct pcmcia_driver bluecard_driver = {
 909        .owner          = THIS_MODULE,
 910        .name           = "bluecard_cs",
 911        .probe          = bluecard_probe,
 912        .remove         = bluecard_detach,
 913        .id_table       = bluecard_ids,
 914};
 915module_pcmcia_driver(bluecard_driver);
 916