linux/drivers/bluetooth/bluecard_cs.c
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   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(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
 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                        default:
 299                                baud_reg = REG_CONTROL_BAUD_RATE_57600;
 300                                break;
 301                        }
 302
 303                        /* Wait until the command reaches the baseband */
 304                        mdelay(100);
 305
 306                        /* Set baud on baseband */
 307                        info->ctrl_reg &= ~0x03;
 308                        info->ctrl_reg |= baud_reg;
 309                        outb(info->ctrl_reg, iobase + REG_CONTROL);
 310
 311                        /* Enable RTS */
 312                        info->ctrl_reg &= ~REG_CONTROL_RTS;
 313                        outb(info->ctrl_reg, iobase + REG_CONTROL);
 314
 315                        /* Wait before the next HCI packet can be send */
 316                        mdelay(1000);
 317                }
 318
 319                if (len == skb->len) {
 320                        kfree_skb(skb);
 321                } else {
 322                        skb_pull(skb, len);
 323                        skb_queue_head(&(info->txq), skb);
 324                }
 325
 326                info->hdev->stat.byte_tx += len;
 327
 328                /* Change buffer */
 329                change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 330
 331        } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 332
 333        clear_bit(XMIT_SENDING, &(info->tx_state));
 334}
 335
 336
 337static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 338{
 339        int i, n, len;
 340
 341        outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 342
 343        len = inb(iobase + offset);
 344        n = 0;
 345        i = 1;
 346
 347        while (n < len) {
 348
 349                if (i == 16) {
 350                        outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 351                        i = 0;
 352                }
 353
 354                buf[n] = inb(iobase + offset + i);
 355
 356                n++;
 357                i++;
 358
 359        }
 360
 361        return len;
 362}
 363
 364
 365static void bluecard_receive(struct bluecard_info *info,
 366                             unsigned int offset)
 367{
 368        unsigned int iobase;
 369        unsigned char buf[31];
 370        int i, len;
 371
 372        if (!info) {
 373                BT_ERR("Unknown device");
 374                return;
 375        }
 376
 377        iobase = info->p_dev->resource[0]->start;
 378
 379        if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 380                bluecard_enable_activity_led(info);
 381
 382        len = bluecard_read(iobase, offset, buf, sizeof(buf));
 383
 384        for (i = 0; i < len; i++) {
 385
 386                /* Allocate packet */
 387                if (!info->rx_skb) {
 388                        info->rx_state = RECV_WAIT_PACKET_TYPE;
 389                        info->rx_count = 0;
 390                        info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 391                        if (!info->rx_skb) {
 392                                BT_ERR("Can't allocate mem for new packet");
 393                                return;
 394                        }
 395                }
 396
 397                if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 398
 399                        hci_skb_pkt_type(info->rx_skb) = buf[i];
 400
 401                        switch (hci_skb_pkt_type(info->rx_skb)) {
 402
 403                        case 0x00:
 404                                /* init packet */
 405                                if (offset != 0x00) {
 406                                        set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 407                                        set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 408                                        set_bit(XMIT_SENDING_READY, &(info->tx_state));
 409                                        bluecard_write_wakeup(info);
 410                                }
 411
 412                                kfree_skb(info->rx_skb);
 413                                info->rx_skb = NULL;
 414                                break;
 415
 416                        case HCI_EVENT_PKT:
 417                                info->rx_state = RECV_WAIT_EVENT_HEADER;
 418                                info->rx_count = HCI_EVENT_HDR_SIZE;
 419                                break;
 420
 421                        case HCI_ACLDATA_PKT:
 422                                info->rx_state = RECV_WAIT_ACL_HEADER;
 423                                info->rx_count = HCI_ACL_HDR_SIZE;
 424                                break;
 425
 426                        case HCI_SCODATA_PKT:
 427                                info->rx_state = RECV_WAIT_SCO_HEADER;
 428                                info->rx_count = HCI_SCO_HDR_SIZE;
 429                                break;
 430
 431                        default:
 432                                /* unknown packet */
 433                                BT_ERR("Unknown HCI packet with type 0x%02x received",
 434                                       hci_skb_pkt_type(info->rx_skb));
 435                                info->hdev->stat.err_rx++;
 436
 437                                kfree_skb(info->rx_skb);
 438                                info->rx_skb = NULL;
 439                                break;
 440
 441                        }
 442
 443                } else {
 444
 445                        skb_put_u8(info->rx_skb, buf[i]);
 446                        info->rx_count--;
 447
 448                        if (info->rx_count == 0) {
 449
 450                                int dlen;
 451                                struct hci_event_hdr *eh;
 452                                struct hci_acl_hdr *ah;
 453                                struct hci_sco_hdr *sh;
 454
 455                                switch (info->rx_state) {
 456
 457                                case RECV_WAIT_EVENT_HEADER:
 458                                        eh = hci_event_hdr(info->rx_skb);
 459                                        info->rx_state = RECV_WAIT_DATA;
 460                                        info->rx_count = eh->plen;
 461                                        break;
 462
 463                                case RECV_WAIT_ACL_HEADER:
 464                                        ah = hci_acl_hdr(info->rx_skb);
 465                                        dlen = __le16_to_cpu(ah->dlen);
 466                                        info->rx_state = RECV_WAIT_DATA;
 467                                        info->rx_count = dlen;
 468                                        break;
 469
 470                                case RECV_WAIT_SCO_HEADER:
 471                                        sh = hci_sco_hdr(info->rx_skb);
 472                                        info->rx_state = RECV_WAIT_DATA;
 473                                        info->rx_count = sh->dlen;
 474                                        break;
 475
 476                                case RECV_WAIT_DATA:
 477                                        hci_recv_frame(info->hdev, info->rx_skb);
 478                                        info->rx_skb = NULL;
 479                                        break;
 480
 481                                }
 482
 483                        }
 484
 485                }
 486
 487
 488        }
 489
 490        info->hdev->stat.byte_rx += len;
 491}
 492
 493
 494static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 495{
 496        struct bluecard_info *info = dev_inst;
 497        unsigned int iobase;
 498        unsigned char reg;
 499
 500        if (!info || !info->hdev)
 501                /* our irq handler is shared */
 502                return IRQ_NONE;
 503
 504        if (!test_bit(CARD_READY, &(info->hw_state)))
 505                return IRQ_HANDLED;
 506
 507        iobase = info->p_dev->resource[0]->start;
 508
 509        spin_lock(&(info->lock));
 510
 511        /* Disable interrupt */
 512        info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 513        outb(info->ctrl_reg, iobase + REG_CONTROL);
 514
 515        reg = inb(iobase + REG_INTERRUPT);
 516
 517        if ((reg != 0x00) && (reg != 0xff)) {
 518
 519                if (reg & 0x04) {
 520                        bluecard_receive(info, 0x00);
 521                        outb(0x04, iobase + REG_INTERRUPT);
 522                        outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 523                }
 524
 525                if (reg & 0x08) {
 526                        bluecard_receive(info, 0x10);
 527                        outb(0x08, iobase + REG_INTERRUPT);
 528                        outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 529                }
 530
 531                if (reg & 0x01) {
 532                        set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 533                        outb(0x01, iobase + REG_INTERRUPT);
 534                        bluecard_write_wakeup(info);
 535                }
 536
 537                if (reg & 0x02) {
 538                        set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 539                        outb(0x02, iobase + REG_INTERRUPT);
 540                        bluecard_write_wakeup(info);
 541                }
 542
 543        }
 544
 545        /* Enable interrupt */
 546        info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 547        outb(info->ctrl_reg, iobase + REG_CONTROL);
 548
 549        spin_unlock(&(info->lock));
 550
 551        return IRQ_HANDLED;
 552}
 553
 554
 555
 556/* ======================== Device specific HCI commands ======================== */
 557
 558
 559static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 560{
 561        struct bluecard_info *info = hci_get_drvdata(hdev);
 562        struct sk_buff *skb;
 563
 564        /* Ericsson baud rate command */
 565        unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 566
 567        skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_KERNEL);
 568        if (!skb) {
 569                BT_ERR("Can't allocate mem for new packet");
 570                return -1;
 571        }
 572
 573        switch (baud) {
 574        case 460800:
 575                cmd[4] = 0x00;
 576                hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
 577                break;
 578        case 230400:
 579                cmd[4] = 0x01;
 580                hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
 581                break;
 582        case 115200:
 583                cmd[4] = 0x02;
 584                hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
 585                break;
 586        case 57600:
 587        default:
 588                cmd[4] = 0x03;
 589                hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
 590                break;
 591        }
 592
 593        skb_put_data(skb, cmd, sizeof(cmd));
 594
 595        skb_queue_tail(&(info->txq), skb);
 596
 597        bluecard_write_wakeup(info);
 598
 599        return 0;
 600}
 601
 602
 603
 604/* ======================== HCI interface ======================== */
 605
 606
 607static int bluecard_hci_flush(struct hci_dev *hdev)
 608{
 609        struct bluecard_info *info = hci_get_drvdata(hdev);
 610
 611        /* Drop TX queue */
 612        skb_queue_purge(&(info->txq));
 613
 614        return 0;
 615}
 616
 617
 618static int bluecard_hci_open(struct hci_dev *hdev)
 619{
 620        struct bluecard_info *info = hci_get_drvdata(hdev);
 621        unsigned int iobase = info->p_dev->resource[0]->start;
 622
 623        if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 624                bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 625
 626        /* Enable power LED */
 627        outb(0x08 | 0x20, iobase + 0x30);
 628
 629        return 0;
 630}
 631
 632
 633static int bluecard_hci_close(struct hci_dev *hdev)
 634{
 635        struct bluecard_info *info = hci_get_drvdata(hdev);
 636        unsigned int iobase = info->p_dev->resource[0]->start;
 637
 638        bluecard_hci_flush(hdev);
 639
 640        /* Stop LED timer */
 641        del_timer_sync(&(info->timer));
 642
 643        /* Disable power LED */
 644        outb(0x00, iobase + 0x30);
 645
 646        return 0;
 647}
 648
 649
 650static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 651{
 652        struct bluecard_info *info = hci_get_drvdata(hdev);
 653
 654        switch (hci_skb_pkt_type(skb)) {
 655        case HCI_COMMAND_PKT:
 656                hdev->stat.cmd_tx++;
 657                break;
 658        case HCI_ACLDATA_PKT:
 659                hdev->stat.acl_tx++;
 660                break;
 661        case HCI_SCODATA_PKT:
 662                hdev->stat.sco_tx++;
 663                break;
 664        }
 665
 666        /* Prepend skb with frame type */
 667        memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
 668        skb_queue_tail(&(info->txq), skb);
 669
 670        bluecard_write_wakeup(info);
 671
 672        return 0;
 673}
 674
 675
 676
 677/* ======================== Card services HCI interaction ======================== */
 678
 679
 680static int bluecard_open(struct bluecard_info *info)
 681{
 682        unsigned int iobase = info->p_dev->resource[0]->start;
 683        struct hci_dev *hdev;
 684        unsigned char id;
 685
 686        spin_lock_init(&(info->lock));
 687
 688        timer_setup(&info->timer, bluecard_activity_led_timeout, 0);
 689
 690        skb_queue_head_init(&(info->txq));
 691
 692        info->rx_state = RECV_WAIT_PACKET_TYPE;
 693        info->rx_count = 0;
 694        info->rx_skb = NULL;
 695
 696        /* Initialize HCI device */
 697        hdev = hci_alloc_dev();
 698        if (!hdev) {
 699                BT_ERR("Can't allocate HCI device");
 700                return -ENOMEM;
 701        }
 702
 703        info->hdev = hdev;
 704
 705        hdev->bus = HCI_PCCARD;
 706        hci_set_drvdata(hdev, info);
 707        SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 708
 709        hdev->open  = bluecard_hci_open;
 710        hdev->close = bluecard_hci_close;
 711        hdev->flush = bluecard_hci_flush;
 712        hdev->send  = bluecard_hci_send_frame;
 713
 714        id = inb(iobase + 0x30);
 715
 716        if ((id & 0x0f) == 0x02)
 717                set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 718
 719        if (id & 0x10)
 720                set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 721
 722        if (id & 0x20)
 723                set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 724
 725        /* Reset card */
 726        info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 727        outb(info->ctrl_reg, iobase + REG_CONTROL);
 728
 729        /* Turn FPGA off */
 730        outb(0x80, iobase + 0x30);
 731
 732        /* Wait some time */
 733        msleep(10);
 734
 735        /* Turn FPGA on */
 736        outb(0x00, iobase + 0x30);
 737
 738        /* Activate card */
 739        info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 740        outb(info->ctrl_reg, iobase + REG_CONTROL);
 741
 742        /* Enable interrupt */
 743        outb(0xff, iobase + REG_INTERRUPT);
 744        info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 745        outb(info->ctrl_reg, iobase + REG_CONTROL);
 746
 747        if ((id & 0x0f) == 0x03) {
 748                /* Disable RTS */
 749                info->ctrl_reg |= REG_CONTROL_RTS;
 750                outb(info->ctrl_reg, iobase + REG_CONTROL);
 751
 752                /* Set baud rate */
 753                info->ctrl_reg |= 0x03;
 754                outb(info->ctrl_reg, iobase + REG_CONTROL);
 755
 756                /* Enable RTS */
 757                info->ctrl_reg &= ~REG_CONTROL_RTS;
 758                outb(info->ctrl_reg, iobase + REG_CONTROL);
 759
 760                set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 761                set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 762                set_bit(XMIT_SENDING_READY, &(info->tx_state));
 763        }
 764
 765        /* Start the RX buffers */
 766        outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 767        outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 768
 769        /* Signal that the hardware is ready */
 770        set_bit(CARD_READY, &(info->hw_state));
 771
 772        /* Drop TX queue */
 773        skb_queue_purge(&(info->txq));
 774
 775        /* Control the point at which RTS is enabled */
 776        outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 777
 778        /* Timeout before it is safe to send the first HCI packet */
 779        msleep(1250);
 780
 781        /* Register HCI device */
 782        if (hci_register_dev(hdev) < 0) {
 783                BT_ERR("Can't register HCI device");
 784                info->hdev = NULL;
 785                hci_free_dev(hdev);
 786                return -ENODEV;
 787        }
 788
 789        return 0;
 790}
 791
 792
 793static int bluecard_close(struct bluecard_info *info)
 794{
 795        unsigned int iobase = info->p_dev->resource[0]->start;
 796        struct hci_dev *hdev = info->hdev;
 797
 798        if (!hdev)
 799                return -ENODEV;
 800
 801        bluecard_hci_close(hdev);
 802
 803        clear_bit(CARD_READY, &(info->hw_state));
 804
 805        /* Reset card */
 806        info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 807        outb(info->ctrl_reg, iobase + REG_CONTROL);
 808
 809        /* Turn FPGA off */
 810        outb(0x80, iobase + 0x30);
 811
 812        hci_unregister_dev(hdev);
 813        hci_free_dev(hdev);
 814
 815        return 0;
 816}
 817
 818static int bluecard_probe(struct pcmcia_device *link)
 819{
 820        struct bluecard_info *info;
 821
 822        /* Create new info device */
 823        info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
 824        if (!info)
 825                return -ENOMEM;
 826
 827        info->p_dev = link;
 828        link->priv = info;
 829
 830        link->config_flags |= CONF_ENABLE_IRQ;
 831
 832        return bluecard_config(link);
 833}
 834
 835
 836static void bluecard_detach(struct pcmcia_device *link)
 837{
 838        bluecard_release(link);
 839}
 840
 841
 842static int bluecard_config(struct pcmcia_device *link)
 843{
 844        struct bluecard_info *info = link->priv;
 845        int i, n;
 846
 847        link->config_index = 0x20;
 848
 849        link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 850        link->resource[0]->end = 64;
 851        link->io_lines = 6;
 852
 853        for (n = 0; n < 0x400; n += 0x40) {
 854                link->resource[0]->start = n ^ 0x300;
 855                i = pcmcia_request_io(link);
 856                if (i == 0)
 857                        break;
 858        }
 859
 860        if (i != 0)
 861                goto failed;
 862
 863        i = pcmcia_request_irq(link, bluecard_interrupt);
 864        if (i != 0)
 865                goto failed;
 866
 867        i = pcmcia_enable_device(link);
 868        if (i != 0)
 869                goto failed;
 870
 871        if (bluecard_open(info) != 0)
 872                goto failed;
 873
 874        return 0;
 875
 876failed:
 877        bluecard_release(link);
 878        return -ENODEV;
 879}
 880
 881
 882static void bluecard_release(struct pcmcia_device *link)
 883{
 884        struct bluecard_info *info = link->priv;
 885
 886        bluecard_close(info);
 887
 888        del_timer_sync(&(info->timer));
 889
 890        pcmcia_disable_device(link);
 891}
 892
 893static const struct pcmcia_device_id bluecard_ids[] = {
 894        PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 895        PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 896        PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 897        PCMCIA_DEVICE_NULL
 898};
 899MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 900
 901static struct pcmcia_driver bluecard_driver = {
 902        .owner          = THIS_MODULE,
 903        .name           = "bluecard_cs",
 904        .probe          = bluecard_probe,
 905        .remove         = bluecard_detach,
 906        .id_table       = bluecard_ids,
 907};
 908module_pcmcia_driver(bluecard_driver);
 909