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                                /* 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                        mdelay(100);
 306
 307                        /* Set baud on baseband */
 308                        info->ctrl_reg &= ~0x03;
 309                        info->ctrl_reg |= baud_reg;
 310                        outb(info->ctrl_reg, iobase + REG_CONTROL);
 311
 312                        /* Enable RTS */
 313                        info->ctrl_reg &= ~REG_CONTROL_RTS;
 314                        outb(info->ctrl_reg, iobase + REG_CONTROL);
 315
 316                        /* Wait before the next HCI packet can be send */
 317                        mdelay(1000);
 318                }
 319
 320                if (len == skb->len) {
 321                        kfree_skb(skb);
 322                } else {
 323                        skb_pull(skb, len);
 324                        skb_queue_head(&(info->txq), skb);
 325                }
 326
 327                info->hdev->stat.byte_tx += len;
 328
 329                /* Change buffer */
 330                change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 331
 332        } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 333
 334        clear_bit(XMIT_SENDING, &(info->tx_state));
 335}
 336
 337
 338static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 339{
 340        int i, n, len;
 341
 342        outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 343
 344        len = inb(iobase + offset);
 345        n = 0;
 346        i = 1;
 347
 348        while (n < len) {
 349
 350                if (i == 16) {
 351                        outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 352                        i = 0;
 353                }
 354
 355                buf[n] = inb(iobase + offset + i);
 356
 357                n++;
 358                i++;
 359
 360        }
 361
 362        return len;
 363}
 364
 365
 366static void bluecard_receive(struct bluecard_info *info,
 367                             unsigned int offset)
 368{
 369        unsigned int iobase;
 370        unsigned char buf[31];
 371        int i, len;
 372
 373        if (!info) {
 374                BT_ERR("Unknown device");
 375                return;
 376        }
 377
 378        iobase = info->p_dev->resource[0]->start;
 379
 380        if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 381                bluecard_enable_activity_led(info);
 382
 383        len = bluecard_read(iobase, offset, buf, sizeof(buf));
 384
 385        for (i = 0; i < len; i++) {
 386
 387                /* Allocate packet */
 388                if (!info->rx_skb) {
 389                        info->rx_state = RECV_WAIT_PACKET_TYPE;
 390                        info->rx_count = 0;
 391                        info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 392                        if (!info->rx_skb) {
 393                                BT_ERR("Can't allocate mem for new packet");
 394                                return;
 395                        }
 396                }
 397
 398                if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 399
 400                        hci_skb_pkt_type(info->rx_skb) = buf[i];
 401
 402                        switch (hci_skb_pkt_type(info->rx_skb)) {
 403
 404                        case 0x00:
 405                                /* init packet */
 406                                if (offset != 0x00) {
 407                                        set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 408                                        set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 409                                        set_bit(XMIT_SENDING_READY, &(info->tx_state));
 410                                        bluecard_write_wakeup(info);
 411                                }
 412
 413                                kfree_skb(info->rx_skb);
 414                                info->rx_skb = NULL;
 415                                break;
 416
 417                        case HCI_EVENT_PKT:
 418                                info->rx_state = RECV_WAIT_EVENT_HEADER;
 419                                info->rx_count = HCI_EVENT_HDR_SIZE;
 420                                break;
 421
 422                        case HCI_ACLDATA_PKT:
 423                                info->rx_state = RECV_WAIT_ACL_HEADER;
 424                                info->rx_count = HCI_ACL_HDR_SIZE;
 425                                break;
 426
 427                        case HCI_SCODATA_PKT:
 428                                info->rx_state = RECV_WAIT_SCO_HEADER;
 429                                info->rx_count = HCI_SCO_HDR_SIZE;
 430                                break;
 431
 432                        default:
 433                                /* unknown packet */
 434                                BT_ERR("Unknown HCI packet with type 0x%02x received",
 435                                       hci_skb_pkt_type(info->rx_skb));
 436                                info->hdev->stat.err_rx++;
 437
 438                                kfree_skb(info->rx_skb);
 439                                info->rx_skb = NULL;
 440                                break;
 441
 442                        }
 443
 444                } else {
 445
 446                        skb_put_u8(info->rx_skb, buf[i]);
 447                        info->rx_count--;
 448
 449                        if (info->rx_count == 0) {
 450
 451                                int dlen;
 452                                struct hci_event_hdr *eh;
 453                                struct hci_acl_hdr *ah;
 454                                struct hci_sco_hdr *sh;
 455
 456                                switch (info->rx_state) {
 457
 458                                case RECV_WAIT_EVENT_HEADER:
 459                                        eh = hci_event_hdr(info->rx_skb);
 460                                        info->rx_state = RECV_WAIT_DATA;
 461                                        info->rx_count = eh->plen;
 462                                        break;
 463
 464                                case RECV_WAIT_ACL_HEADER:
 465                                        ah = hci_acl_hdr(info->rx_skb);
 466                                        dlen = __le16_to_cpu(ah->dlen);
 467                                        info->rx_state = RECV_WAIT_DATA;
 468                                        info->rx_count = dlen;
 469                                        break;
 470
 471                                case RECV_WAIT_SCO_HEADER:
 472                                        sh = hci_sco_hdr(info->rx_skb);
 473                                        info->rx_state = RECV_WAIT_DATA;
 474                                        info->rx_count = sh->dlen;
 475                                        break;
 476
 477                                case RECV_WAIT_DATA:
 478                                        hci_recv_frame(info->hdev, info->rx_skb);
 479                                        info->rx_skb = NULL;
 480                                        break;
 481
 482                                }
 483
 484                        }
 485
 486                }
 487
 488
 489        }
 490
 491        info->hdev->stat.byte_rx += len;
 492}
 493
 494
 495static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 496{
 497        struct bluecard_info *info = dev_inst;
 498        unsigned int iobase;
 499        unsigned char reg;
 500
 501        if (!info || !info->hdev)
 502                /* our irq handler is shared */
 503                return IRQ_NONE;
 504
 505        if (!test_bit(CARD_READY, &(info->hw_state)))
 506                return IRQ_HANDLED;
 507
 508        iobase = info->p_dev->resource[0]->start;
 509
 510        spin_lock(&(info->lock));
 511
 512        /* Disable interrupt */
 513        info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 514        outb(info->ctrl_reg, iobase + REG_CONTROL);
 515
 516        reg = inb(iobase + REG_INTERRUPT);
 517
 518        if ((reg != 0x00) && (reg != 0xff)) {
 519
 520                if (reg & 0x04) {
 521                        bluecard_receive(info, 0x00);
 522                        outb(0x04, iobase + REG_INTERRUPT);
 523                        outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 524                }
 525
 526                if (reg & 0x08) {
 527                        bluecard_receive(info, 0x10);
 528                        outb(0x08, iobase + REG_INTERRUPT);
 529                        outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 530                }
 531
 532                if (reg & 0x01) {
 533                        set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 534                        outb(0x01, iobase + REG_INTERRUPT);
 535                        bluecard_write_wakeup(info);
 536                }
 537
 538                if (reg & 0x02) {
 539                        set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 540                        outb(0x02, iobase + REG_INTERRUPT);
 541                        bluecard_write_wakeup(info);
 542                }
 543
 544        }
 545
 546        /* Enable interrupt */
 547        info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 548        outb(info->ctrl_reg, iobase + REG_CONTROL);
 549
 550        spin_unlock(&(info->lock));
 551
 552        return IRQ_HANDLED;
 553}
 554
 555
 556
 557/* ======================== Device specific HCI commands ======================== */
 558
 559
 560static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 561{
 562        struct bluecard_info *info = hci_get_drvdata(hdev);
 563        struct sk_buff *skb;
 564
 565        /* Ericsson baud rate command */
 566        unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 567
 568        skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 569        if (!skb) {
 570                BT_ERR("Can't allocate mem for new packet");
 571                return -1;
 572        }
 573
 574        switch (baud) {
 575        case 460800:
 576                cmd[4] = 0x00;
 577                hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
 578                break;
 579        case 230400:
 580                cmd[4] = 0x01;
 581                hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
 582                break;
 583        case 115200:
 584                cmd[4] = 0x02;
 585                hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
 586                break;
 587        case 57600:
 588                /* Fall through... */
 589        default:
 590                cmd[4] = 0x03;
 591                hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
 592                break;
 593        }
 594
 595        skb_put_data(skb, cmd, sizeof(cmd));
 596
 597        skb_queue_tail(&(info->txq), skb);
 598
 599        bluecard_write_wakeup(info);
 600
 601        return 0;
 602}
 603
 604
 605
 606/* ======================== HCI interface ======================== */
 607
 608
 609static int bluecard_hci_flush(struct hci_dev *hdev)
 610{
 611        struct bluecard_info *info = hci_get_drvdata(hdev);
 612
 613        /* Drop TX queue */
 614        skb_queue_purge(&(info->txq));
 615
 616        return 0;
 617}
 618
 619
 620static int bluecard_hci_open(struct hci_dev *hdev)
 621{
 622        struct bluecard_info *info = hci_get_drvdata(hdev);
 623        unsigned int iobase = info->p_dev->resource[0]->start;
 624
 625        if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 626                bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 627
 628        /* Enable power LED */
 629        outb(0x08 | 0x20, iobase + 0x30);
 630
 631        return 0;
 632}
 633
 634
 635static int bluecard_hci_close(struct hci_dev *hdev)
 636{
 637        struct bluecard_info *info = hci_get_drvdata(hdev);
 638        unsigned int iobase = info->p_dev->resource[0]->start;
 639
 640        bluecard_hci_flush(hdev);
 641
 642        /* Stop LED timer */
 643        del_timer_sync(&(info->timer));
 644
 645        /* Disable power LED */
 646        outb(0x00, iobase + 0x30);
 647
 648        return 0;
 649}
 650
 651
 652static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 653{
 654        struct bluecard_info *info = hci_get_drvdata(hdev);
 655
 656        switch (hci_skb_pkt_type(skb)) {
 657        case HCI_COMMAND_PKT:
 658                hdev->stat.cmd_tx++;
 659                break;
 660        case HCI_ACLDATA_PKT:
 661                hdev->stat.acl_tx++;
 662                break;
 663        case HCI_SCODATA_PKT:
 664                hdev->stat.sco_tx++;
 665                break;
 666        }
 667
 668        /* Prepend skb with frame type */
 669        memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
 670        skb_queue_tail(&(info->txq), skb);
 671
 672        bluecard_write_wakeup(info);
 673
 674        return 0;
 675}
 676
 677
 678
 679/* ======================== Card services HCI interaction ======================== */
 680
 681
 682static int bluecard_open(struct bluecard_info *info)
 683{
 684        unsigned int iobase = info->p_dev->resource[0]->start;
 685        struct hci_dev *hdev;
 686        unsigned char id;
 687
 688        spin_lock_init(&(info->lock));
 689
 690        timer_setup(&info->timer, bluecard_activity_led_timeout, 0);
 691
 692        skb_queue_head_init(&(info->txq));
 693
 694        info->rx_state = RECV_WAIT_PACKET_TYPE;
 695        info->rx_count = 0;
 696        info->rx_skb = NULL;
 697
 698        /* Initialize HCI device */
 699        hdev = hci_alloc_dev();
 700        if (!hdev) {
 701                BT_ERR("Can't allocate HCI device");
 702                return -ENOMEM;
 703        }
 704
 705        info->hdev = hdev;
 706
 707        hdev->bus = HCI_PCCARD;
 708        hci_set_drvdata(hdev, info);
 709        SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 710
 711        hdev->open  = bluecard_hci_open;
 712        hdev->close = bluecard_hci_close;
 713        hdev->flush = bluecard_hci_flush;
 714        hdev->send  = bluecard_hci_send_frame;
 715
 716        id = inb(iobase + 0x30);
 717
 718        if ((id & 0x0f) == 0x02)
 719                set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 720
 721        if (id & 0x10)
 722                set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 723
 724        if (id & 0x20)
 725                set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 726
 727        /* Reset card */
 728        info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 729        outb(info->ctrl_reg, iobase + REG_CONTROL);
 730
 731        /* Turn FPGA off */
 732        outb(0x80, iobase + 0x30);
 733
 734        /* Wait some time */
 735        msleep(10);
 736
 737        /* Turn FPGA on */
 738        outb(0x00, iobase + 0x30);
 739
 740        /* Activate card */
 741        info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 742        outb(info->ctrl_reg, iobase + REG_CONTROL);
 743
 744        /* Enable interrupt */
 745        outb(0xff, iobase + REG_INTERRUPT);
 746        info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 747        outb(info->ctrl_reg, iobase + REG_CONTROL);
 748
 749        if ((id & 0x0f) == 0x03) {
 750                /* Disable RTS */
 751                info->ctrl_reg |= REG_CONTROL_RTS;
 752                outb(info->ctrl_reg, iobase + REG_CONTROL);
 753
 754                /* Set baud rate */
 755                info->ctrl_reg |= 0x03;
 756                outb(info->ctrl_reg, iobase + REG_CONTROL);
 757
 758                /* Enable RTS */
 759                info->ctrl_reg &= ~REG_CONTROL_RTS;
 760                outb(info->ctrl_reg, iobase + REG_CONTROL);
 761
 762                set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 763                set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 764                set_bit(XMIT_SENDING_READY, &(info->tx_state));
 765        }
 766
 767        /* Start the RX buffers */
 768        outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 769        outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 770
 771        /* Signal that the hardware is ready */
 772        set_bit(CARD_READY, &(info->hw_state));
 773
 774        /* Drop TX queue */
 775        skb_queue_purge(&(info->txq));
 776
 777        /* Control the point at which RTS is enabled */
 778        outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 779
 780        /* Timeout before it is safe to send the first HCI packet */
 781        msleep(1250);
 782
 783        /* Register HCI device */
 784        if (hci_register_dev(hdev) < 0) {
 785                BT_ERR("Can't register HCI device");
 786                info->hdev = NULL;
 787                hci_free_dev(hdev);
 788                return -ENODEV;
 789        }
 790
 791        return 0;
 792}
 793
 794
 795static int bluecard_close(struct bluecard_info *info)
 796{
 797        unsigned int iobase = info->p_dev->resource[0]->start;
 798        struct hci_dev *hdev = info->hdev;
 799
 800        if (!hdev)
 801                return -ENODEV;
 802
 803        bluecard_hci_close(hdev);
 804
 805        clear_bit(CARD_READY, &(info->hw_state));
 806
 807        /* Reset card */
 808        info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 809        outb(info->ctrl_reg, iobase + REG_CONTROL);
 810
 811        /* Turn FPGA off */
 812        outb(0x80, iobase + 0x30);
 813
 814        hci_unregister_dev(hdev);
 815        hci_free_dev(hdev);
 816
 817        return 0;
 818}
 819
 820static int bluecard_probe(struct pcmcia_device *link)
 821{
 822        struct bluecard_info *info;
 823
 824        /* Create new info device */
 825        info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
 826        if (!info)
 827                return -ENOMEM;
 828
 829        info->p_dev = link;
 830        link->priv = info;
 831
 832        link->config_flags |= CONF_ENABLE_IRQ;
 833
 834        return bluecard_config(link);
 835}
 836
 837
 838static void bluecard_detach(struct pcmcia_device *link)
 839{
 840        bluecard_release(link);
 841}
 842
 843
 844static int bluecard_config(struct pcmcia_device *link)
 845{
 846        struct bluecard_info *info = link->priv;
 847        int i, n;
 848
 849        link->config_index = 0x20;
 850
 851        link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 852        link->resource[0]->end = 64;
 853        link->io_lines = 6;
 854
 855        for (n = 0; n < 0x400; n += 0x40) {
 856                link->resource[0]->start = n ^ 0x300;
 857                i = pcmcia_request_io(link);
 858                if (i == 0)
 859                        break;
 860        }
 861
 862        if (i != 0)
 863                goto failed;
 864
 865        i = pcmcia_request_irq(link, bluecard_interrupt);
 866        if (i != 0)
 867                goto failed;
 868
 869        i = pcmcia_enable_device(link);
 870        if (i != 0)
 871                goto failed;
 872
 873        if (bluecard_open(info) != 0)
 874                goto failed;
 875
 876        return 0;
 877
 878failed:
 879        bluecard_release(link);
 880        return -ENODEV;
 881}
 882
 883
 884static void bluecard_release(struct pcmcia_device *link)
 885{
 886        struct bluecard_info *info = link->priv;
 887
 888        bluecard_close(info);
 889
 890        del_timer_sync(&(info->timer));
 891
 892        pcmcia_disable_device(link);
 893}
 894
 895static const struct pcmcia_device_id bluecard_ids[] = {
 896        PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 897        PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 898        PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 899        PCMCIA_DEVICE_NULL
 900};
 901MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 902
 903static struct pcmcia_driver bluecard_driver = {
 904        .owner          = THIS_MODULE,
 905        .name           = "bluecard_cs",
 906        .probe          = bluecard_probe,
 907        .remove         = bluecard_detach,
 908        .id_table       = bluecard_ids,
 909};
 910module_pcmcia_driver(bluecard_driver);
 911