drivers/bluetooth/bluecard_cs.c

   1 /*
   2  *
   3  *  Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
   4  *
   5  *  Copyright (C) 2001-2002  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation;
  11  *
  12  *  Software distributed under the License is distributed on an "AS
  13  *  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  14  *  implied. See the License for the specific language governing
  15  *  rights and limitations under the License.
  16  *
  17  *  The initial developer of the original code is David A. Hinds
  18  *  <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  19  *  are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  20  *
  21  */
  22
  23 #include <linux/module.h>
  24
  25 #include <linux/kernel.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/delay.h>
  31 #include <linux/timer.h>
  32 #include <linux/errno.h>
  33 #include <linux/ptrace.h>
  34 #include <linux/ioport.h>
  35 #include <linux/spinlock.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/wait.h>
  38
  39 #include <linux/skbuff.h>
  40 #include <asm/io.h>
  41
  42 #include <pcmcia/cs_types.h>
  43 #include <pcmcia/cs.h>
  44 #include <pcmcia/cistpl.h>
  45 #include <pcmcia/ciscode.h>
  46 #include <pcmcia/ds.h>
  47 #include <pcmcia/cisreg.h>
  48
  49 #include <net/bluetooth/bluetooth.h>
  50 #include <net/bluetooth/hci_core.h>
  51
  52
  53
  54 /* ======================== Module parameters ======================== */
  55
  56
  57 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  58 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
  59 MODULE_LICENSE("GPL");
  60
  61
  62
  63 /* ======================== Local structures ======================== */
  64
  65
  66 typedef struct bluecard_info_t {
  67         struct pcmcia_device *p_dev;
  68         dev_node_t node;
  69
  70         struct hci_dev *hdev;
  71
  72         spinlock_t lock;                /* For serializing operations */
  73         struct timer_list timer;        /* For LED control */
  74
  75         struct sk_buff_head txq;
  76         unsigned long tx_state;
  77
  78         unsigned long rx_state;
  79         unsigned long rx_count;
  80         struct sk_buff *rx_skb;
  81
  82         unsigned char ctrl_reg;
  83         unsigned long hw_state;         /* Status of the hardware and LED control */
  84 } bluecard_info_t;
  85
  86
  87 static int bluecard_config(struct pcmcia_device *link);
  88 static void bluecard_release(struct pcmcia_device *link);
  89
  90 static void bluecard_detach(struct pcmcia_device *p_dev);
  91
  92
  93 /* Default baud rate: 57600, 115200, 230400 or 460800 */
  94 #define DEFAULT_BAUD_RATE  230400
  95
  96
  97 /* Hardware states */
  98 #define CARD_READY             1
  99 #define CARD_HAS_PCCARD_ID     4
 100 #define CARD_HAS_POWER_LED     5
 101 #define CARD_HAS_ACTIVITY_LED  6
 102
 103 /* Transmit states  */
 104 #define XMIT_SENDING         1
 105 #define XMIT_WAKEUP          2
 106 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 107 #define XMIT_BUF_ONE_READY   6
 108 #define XMIT_BUF_TWO_READY   7
 109 #define XMIT_SENDING_READY   8
 110
 111 /* Receiver states */
 112 #define RECV_WAIT_PACKET_TYPE   0
 113 #define RECV_WAIT_EVENT_HEADER  1
 114 #define RECV_WAIT_ACL_HEADER    2
 115 #define RECV_WAIT_SCO_HEADER    3
 116 #define RECV_WAIT_DATA          4
 117
 118 /* Special packet types */
 119 #define PKT_BAUD_RATE_57600   0x80
 120 #define PKT_BAUD_RATE_115200  0x81
 121 #define PKT_BAUD_RATE_230400  0x82
 122 #define PKT_BAUD_RATE_460800  0x83
 123
 124
 125 /* These are the register offsets */
 126 #define REG_COMMAND     0x20
 127 #define REG_INTERRUPT   0x21
 128 #define REG_CONTROL     0x22
 129 #define REG_RX_CONTROL  0x24
 130 #define REG_CARD_RESET  0x30
 131 #define REG_LED_CTRL    0x30
 132
 133 /* REG_COMMAND */
 134 #define REG_COMMAND_TX_BUF_ONE  0x01
 135 #define REG_COMMAND_TX_BUF_TWO  0x02
 136 #define REG_COMMAND_RX_BUF_ONE  0x04
 137 #define REG_COMMAND_RX_BUF_TWO  0x08
 138 #define REG_COMMAND_RX_WIN_ONE  0x00
 139 #define REG_COMMAND_RX_WIN_TWO  0x10
 140
 141 /* REG_CONTROL */
 142 #define REG_CONTROL_BAUD_RATE_57600   0x00
 143 #define REG_CONTROL_BAUD_RATE_115200  0x01
 144 #define REG_CONTROL_BAUD_RATE_230400  0x02
 145 #define REG_CONTROL_BAUD_RATE_460800  0x03
 146 #define REG_CONTROL_RTS               0x04
 147 #define REG_CONTROL_BT_ON             0x08
 148 #define REG_CONTROL_BT_RESET          0x10
 149 #define REG_CONTROL_BT_RES_PU         0x20
 150 #define REG_CONTROL_INTERRUPT         0x40
 151 #define REG_CONTROL_CARD_RESET        0x80
 152
 153 /* REG_RX_CONTROL */
 154 #define RTS_LEVEL_SHIFT_BITS  0x02
 155
 156
 157
 158 /* ======================== LED handling routines ======================== */
 159
 160
 161 static void bluecard_activity_led_timeout(u_long arg)
 162 {
 163         bluecard_info_t *info = (bluecard_info_t *)arg;
 164         unsigned int iobase = info->p_dev->io.BasePort1;
 165
 166         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 167                 return;
 168
 169         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 170                 /* Disable activity LED */
 171                 outb(0x08 | 0x20, iobase + 0x30);
 172         } else {
 173                 /* Disable power LED */
 174                 outb(0x00, iobase + 0x30);
 175         }
 176 }
 177
 178
 179 static void bluecard_enable_activity_led(bluecard_info_t *info)
 180 {
 181         unsigned int iobase = info->p_dev->io.BasePort1;
 182
 183         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 184                 return;
 185
 186         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 187                 /* Enable activity LED */
 188                 outb(0x10 | 0x40, iobase + 0x30);
 189
 190                 /* Stop the LED after HZ/4 */
 191                 mod_timer(&(info->timer), jiffies + HZ / 4);
 192         } else {
 193                 /* Enable power LED */
 194                 outb(0x08 | 0x20, iobase + 0x30);
 195
 196                 /* Stop the LED after HZ/2 */
 197                 mod_timer(&(info->timer), jiffies + HZ / 2);
 198         }
 199 }
 200
 201
 202
 203 /* ======================== Interrupt handling ======================== */
 204
 205
 206 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 207 {
 208         int i, actual;
 209
 210         actual = (len > 15) ? 15 : len;
 211
 212         outb_p(actual, iobase + offset);
 213
 214         for (i = 0; i < actual; i++)
 215                 outb_p(buf[i], iobase + offset + i + 1);
 216
 217         return actual;
 218 }
 219
 220
 221 static void bluecard_write_wakeup(bluecard_info_t *info)
 222 {
 223         if (!info) {
 224                 BT_ERR("Unknown device");
 225                 return;
 226         }
 227
 228         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 229                 return;
 230
 231         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 232                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 233                 return;
 234         }
 235
 236         do {
 237                 register unsigned int iobase = info->p_dev->io.BasePort1;
 238                 register unsigned int offset;
 239                 register unsigned char command;
 240                 register unsigned long ready_bit;
 241                 register struct sk_buff *skb;
 242                 register int len;
 243
 244                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 245
 246                 if (!pcmcia_dev_present(info->p_dev))
 247                         return;
 248
 249                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 250                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 251                                 break;
 252                         offset = 0x10;
 253                         command = REG_COMMAND_TX_BUF_TWO;
 254                         ready_bit = XMIT_BUF_TWO_READY;
 255                 } else {
 256                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 257                                 break;
 258                         offset = 0x00;
 259                         command = REG_COMMAND_TX_BUF_ONE;
 260                         ready_bit = XMIT_BUF_ONE_READY;
 261                 }
 262
 263                 if (!(skb = skb_dequeue(&(info->txq))))
 264                         break;
 265
 266                 if (bt_cb(skb)->pkt_type & 0x80) {
 267                         /* Disable RTS */
 268                         info->ctrl_reg |= REG_CONTROL_RTS;
 269                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 270                 }
 271
 272                 /* Activate LED */
 273                 bluecard_enable_activity_led(info);
 274
 275                 /* Send frame */
 276                 len = bluecard_write(iobase, offset, skb->data, skb->len);
 277
 278                 /* Tell the FPGA to send the data */
 279                 outb_p(command, iobase + REG_COMMAND);
 280
 281                 /* Mark the buffer as dirty */
 282                 clear_bit(ready_bit, &(info->tx_state));
 283
 284                 if (bt_cb(skb)->pkt_type & 0x80) {
 285                         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 286                         DEFINE_WAIT(wait);
 287
 288                         unsigned char baud_reg;
 289
 290                         switch (bt_cb(skb)->pkt_type) {
 291                         case PKT_BAUD_RATE_460800:
 292                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 293                                 break;
 294                         case PKT_BAUD_RATE_230400:
 295                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 296                                 break;
 297                         case PKT_BAUD_RATE_115200:
 298                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 299                                 break;
 300                         case PKT_BAUD_RATE_57600:
 301                                 /* Fall through... */
 302                         default:
 303                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 304                                 break;
 305                         }
 306
 307                         /* Wait until the command reaches the baseband */
 308                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 309                         schedule_timeout(HZ/10);
 310                         finish_wait(&wq, &wait);
 311
 312                         /* Set baud on baseband */
 313                         info->ctrl_reg &= ~0x03;
 314                         info->ctrl_reg |= baud_reg;
 315                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 316
 317                         /* Enable RTS */
 318                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 319                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 320
 321                         /* Wait before the next HCI packet can be send */
 322                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 323                         schedule_timeout(HZ);
 324                         finish_wait(&wq, &wait);
 325                 }
 326
 327                 if (len == skb->len) {
 328                         kfree_skb(skb);
 329                 } else {
 330                         skb_pull(skb, len);
 331                         skb_queue_head(&(info->txq), skb);
 332                 }
 333
 334                 info->hdev->stat.byte_tx += len;
 335
 336                 /* Change buffer */
 337                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 338
 339         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 340
 341         clear_bit(XMIT_SENDING, &(info->tx_state));
 342 }
 343
 344
 345 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 346 {
 347         int i, n, len;
 348
 349         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 350
 351         len = inb(iobase + offset);
 352         n = 0;
 353         i = 1;
 354
 355         while (n < len) {
 356
 357                 if (i == 16) {
 358                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 359                         i = 0;
 360                 }
 361
 362                 buf[n] = inb(iobase + offset + i);
 363
 364                 n++;
 365                 i++;
 366
 367         }
 368
 369         return len;
 370 }
 371
 372
 373 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 374 {
 375         unsigned int iobase;
 376         unsigned char buf[31];
 377         int i, len;
 378
 379         if (!info) {
 380                 BT_ERR("Unknown device");
 381                 return;
 382         }
 383
 384         iobase = info->p_dev->io.BasePort1;
 385
 386         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 387                 bluecard_enable_activity_led(info);
 388
 389         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 390
 391         for (i = 0; i < len; i++) {
 392
 393                 /* Allocate packet */
 394                 if (info->rx_skb == NULL) {
 395                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 396                         info->rx_count = 0;
 397                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 398                                 BT_ERR("Can't allocate mem for new packet");
 399                                 return;
 400                         }
 401                 }
 402
 403                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 404
 405                         info->rx_skb->dev = (void *) info->hdev;
 406                         bt_cb(info->rx_skb)->pkt_type = buf[i];
 407
 408                         switch (bt_cb(info->rx_skb)->pkt_type) {
 409
 410                         case 0x00:
 411                                 /* init packet */
 412                                 if (offset != 0x00) {
 413                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 414                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 415                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 416                                         bluecard_write_wakeup(info);
 417                                 }
 418
 419                                 kfree_skb(info->rx_skb);
 420                                 info->rx_skb = NULL;
 421                                 break;
 422
 423                         case HCI_EVENT_PKT:
 424                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 425                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 426                                 break;
 427
 428                         case HCI_ACLDATA_PKT:
 429                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 430                                 info->rx_count = HCI_ACL_HDR_SIZE;
 431                                 break;
 432
 433                         case HCI_SCODATA_PKT:
 434                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 435                                 info->rx_count = HCI_SCO_HDR_SIZE;
 436                                 break;
 437
 438                         default:
 439                                 /* unknown packet */
 440                                 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
 441                                 info->hdev->stat.err_rx++;
 442
 443                                 kfree_skb(info->rx_skb);
 444                                 info->rx_skb = NULL;
 445                                 break;
 446
 447                         }
 448
 449                 } else {
 450
 451                         *skb_put(info->rx_skb, 1) = buf[i];
 452                         info->rx_count--;
 453
 454                         if (info->rx_count == 0) {
 455
 456                                 int dlen;
 457                                 struct hci_event_hdr *eh;
 458                                 struct hci_acl_hdr *ah;
 459                                 struct hci_sco_hdr *sh;
 460
 461                                 switch (info->rx_state) {
 462
 463                                 case RECV_WAIT_EVENT_HEADER:
 464                                         eh = hci_event_hdr(info->rx_skb);
 465                                         info->rx_state = RECV_WAIT_DATA;
 466                                         info->rx_count = eh->plen;
 467                                         break;
 468
 469                                 case RECV_WAIT_ACL_HEADER:
 470                                         ah = hci_acl_hdr(info->rx_skb);
 471                                         dlen = __le16_to_cpu(ah->dlen);
 472                                         info->rx_state = RECV_WAIT_DATA;
 473                                         info->rx_count = dlen;
 474                                         break;
 475
 476                                 case RECV_WAIT_SCO_HEADER:
 477                                         sh = hci_sco_hdr(info->rx_skb);
 478                                         info->rx_state = RECV_WAIT_DATA;
 479                                         info->rx_count = sh->dlen;
 480                                         break;
 481
 482                                 case RECV_WAIT_DATA:
 483                                         hci_recv_frame(info->rx_skb);
 484                                         info->rx_skb = NULL;
 485                                         break;
 486
 487                                 }
 488
 489                         }
 490
 491                 }
 492
 493
 494         }
 495
 496         info->hdev->stat.byte_rx += len;
 497 }
 498
 499
 500 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 501 {
 502         bluecard_info_t *info = dev_inst;
 503         unsigned int iobase;
 504         unsigned char reg;
 505
 506         if (!info || !info->hdev) {
 507                 BT_ERR("Call of irq %d for unknown device", irq);
 508                 return IRQ_NONE;
 509         }
 510
 511         if (!test_bit(CARD_READY, &(info->hw_state)))
 512                 return IRQ_HANDLED;
 513
 514         iobase = info->p_dev->io.BasePort1;
 515
 516         spin_lock(&(info->lock));
 517
 518         /* Disable interrupt */
 519         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 520         outb(info->ctrl_reg, iobase + REG_CONTROL);
 521
 522         reg = inb(iobase + REG_INTERRUPT);
 523
 524         if ((reg != 0x00) && (reg != 0xff)) {
 525
 526                 if (reg & 0x04) {
 527                         bluecard_receive(info, 0x00);
 528                         outb(0x04, iobase + REG_INTERRUPT);
 529                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 530                 }
 531
 532                 if (reg & 0x08) {
 533                         bluecard_receive(info, 0x10);
 534                         outb(0x08, iobase + REG_INTERRUPT);
 535                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 536                 }
 537
 538                 if (reg & 0x01) {
 539                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 540                         outb(0x01, iobase + REG_INTERRUPT);
 541                         bluecard_write_wakeup(info);
 542                 }
 543
 544                 if (reg & 0x02) {
 545                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 546                         outb(0x02, iobase + REG_INTERRUPT);
 547                         bluecard_write_wakeup(info);
 548                 }
 549
 550         }
 551
 552         /* Enable interrupt */
 553         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 554         outb(info->ctrl_reg, iobase + REG_CONTROL);
 555
 556         spin_unlock(&(info->lock));
 557
 558         return IRQ_HANDLED;
 559 }
 560
 561
 562
 563 /* ======================== Device specific HCI commands ======================== */
 564
 565
 566 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 567 {
 568         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 569         struct sk_buff *skb;
 570
 571         /* Ericsson baud rate command */
 572         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 573
 574         if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 575                 BT_ERR("Can't allocate mem for new packet");
 576                 return -1;
 577         }
 578
 579         switch (baud) {
 580         case 460800:
 581                 cmd[4] = 0x00;
 582                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
 583                 break;
 584         case 230400:
 585                 cmd[4] = 0x01;
 586                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
 587                 break;
 588         case 115200:
 589                 cmd[4] = 0x02;
 590                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
 591                 break;
 592         case 57600:
 593                 /* Fall through... */
 594         default:
 595                 cmd[4] = 0x03;
 596                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
 597                 break;
 598         }
 599
 600         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 601
 602         skb_queue_tail(&(info->txq), skb);
 603
 604         bluecard_write_wakeup(info);
 605
 606         return 0;
 607 }
 608
 609
 610
 611 /* ======================== HCI interface ======================== */
 612
 613
 614 static int bluecard_hci_flush(struct hci_dev *hdev)
 615 {
 616         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 617
 618         /* Drop TX queue */
 619         skb_queue_purge(&(info->txq));
 620
 621         return 0;
 622 }
 623
 624
 625 static int bluecard_hci_open(struct hci_dev *hdev)
 626 {
 627         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 628         unsigned int iobase = info->p_dev->io.BasePort1;
 629
 630         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 631                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 632
 633         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
 634                 return 0;
 635
 636         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 637                 /* Enable LED */
 638                 outb(0x08 | 0x20, iobase + 0x30);
 639         }
 640
 641         return 0;
 642 }
 643
 644
 645 static int bluecard_hci_close(struct hci_dev *hdev)
 646 {
 647         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 648         unsigned int iobase = info->p_dev->io.BasePort1;
 649
 650         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 651                 return 0;
 652
 653         bluecard_hci_flush(hdev);
 654
 655         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 656                 /* Disable LED */
 657                 outb(0x00, iobase + 0x30);
 658         }
 659
 660         return 0;
 661 }
 662
 663
 664 static int bluecard_hci_send_frame(struct sk_buff *skb)
 665 {
 666         bluecard_info_t *info;
 667         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 668
 669         if (!hdev) {
 670                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 671                 return -ENODEV;
 672         }
 673
 674         info = (bluecard_info_t *)(hdev->driver_data);
 675
 676         switch (bt_cb(skb)->pkt_type) {
 677         case HCI_COMMAND_PKT:
 678                 hdev->stat.cmd_tx++;
 679                 break;
 680         case HCI_ACLDATA_PKT:
 681                 hdev->stat.acl_tx++;
 682                 break;
 683         case HCI_SCODATA_PKT:
 684                 hdev->stat.sco_tx++;
 685                 break;
 686         };
 687
 688         /* Prepend skb with frame type */
 689         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 690         skb_queue_tail(&(info->txq), skb);
 691
 692         bluecard_write_wakeup(info);
 693
 694         return 0;
 695 }
 696
 697
 698 static void bluecard_hci_destruct(struct hci_dev *hdev)
 699 {
 700 }
 701
 702
 703 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 704 {
 705         return -ENOIOCTLCMD;
 706 }
 707
 708
 709
 710 /* ======================== Card services HCI interaction ======================== */
 711
 712
 713 static int bluecard_open(bluecard_info_t *info)
 714 {
 715         unsigned int iobase = info->p_dev->io.BasePort1;
 716         struct hci_dev *hdev;
 717         unsigned char id;
 718
 719         spin_lock_init(&(info->lock));
 720
 721         init_timer(&(info->timer));
 722         info->timer.function = &bluecard_activity_led_timeout;
 723         info->timer.data = (u_long)info;
 724
 725         skb_queue_head_init(&(info->txq));
 726
 727         info->rx_state = RECV_WAIT_PACKET_TYPE;
 728         info->rx_count = 0;
 729         info->rx_skb = NULL;
 730
 731         /* Initialize HCI device */
 732         hdev = hci_alloc_dev();
 733         if (!hdev) {
 734                 BT_ERR("Can't allocate HCI device");
 735                 return -ENOMEM;
 736         }
 737
 738         info->hdev = hdev;
 739
 740         hdev->type = HCI_PCCARD;
 741         hdev->driver_data = info;
 742         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 743
 744         hdev->open     = bluecard_hci_open;
 745         hdev->close    = bluecard_hci_close;
 746         hdev->flush    = bluecard_hci_flush;
 747         hdev->send     = bluecard_hci_send_frame;
 748         hdev->destruct = bluecard_hci_destruct;
 749         hdev->ioctl    = bluecard_hci_ioctl;
 750
 751         hdev->owner = THIS_MODULE;
 752
 753         id = inb(iobase + 0x30);
 754
 755         if ((id & 0x0f) == 0x02)
 756                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 757
 758         if (id & 0x10)
 759                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 760
 761         if (id & 0x20)
 762                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 763
 764         /* Reset card */
 765         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 766         outb(info->ctrl_reg, iobase + REG_CONTROL);
 767
 768         /* Turn FPGA off */
 769         outb(0x80, iobase + 0x30);
 770
 771         /* Wait some time */
 772         msleep(10);
 773
 774         /* Turn FPGA on */
 775         outb(0x00, iobase + 0x30);
 776
 777         /* Activate card */
 778         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 779         outb(info->ctrl_reg, iobase + REG_CONTROL);
 780
 781         /* Enable interrupt */
 782         outb(0xff, iobase + REG_INTERRUPT);
 783         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 784         outb(info->ctrl_reg, iobase + REG_CONTROL);
 785
 786         if ((id & 0x0f) == 0x03) {
 787                 /* Disable RTS */
 788                 info->ctrl_reg |= REG_CONTROL_RTS;
 789                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 790
 791                 /* Set baud rate */
 792                 info->ctrl_reg |= 0x03;
 793                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 794
 795                 /* Enable RTS */
 796                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 797                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 798
 799                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 800                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 801                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 802         }
 803
 804         /* Start the RX buffers */
 805         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 806         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 807
 808         /* Signal that the hardware is ready */
 809         set_bit(CARD_READY, &(info->hw_state));
 810
 811         /* Drop TX queue */
 812         skb_queue_purge(&(info->txq));
 813
 814         /* Control the point at which RTS is enabled */
 815         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 816
 817         /* Timeout before it is safe to send the first HCI packet */
 818         msleep(1250);
 819
 820         /* Register HCI device */
 821         if (hci_register_dev(hdev) < 0) {
 822                 BT_ERR("Can't register HCI device");
 823                 info->hdev = NULL;
 824                 hci_free_dev(hdev);
 825                 return -ENODEV;
 826         }
 827
 828         return 0;
 829 }
 830
 831
 832 static int bluecard_close(bluecard_info_t *info)
 833 {
 834         unsigned int iobase = info->p_dev->io.BasePort1;
 835         struct hci_dev *hdev = info->hdev;
 836
 837         if (!hdev)
 838                 return -ENODEV;
 839
 840         bluecard_hci_close(hdev);
 841
 842         clear_bit(CARD_READY, &(info->hw_state));
 843
 844         /* Reset card */
 845         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 846         outb(info->ctrl_reg, iobase + REG_CONTROL);
 847
 848         /* Turn FPGA off */
 849         outb(0x80, iobase + 0x30);
 850
 851         if (hci_unregister_dev(hdev) < 0)
 852                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 853
 854         hci_free_dev(hdev);
 855
 856         return 0;
 857 }
 858
 859 static int bluecard_probe(struct pcmcia_device *link)
 860 {
 861         bluecard_info_t *info;
 862
 863         /* Create new info device */
 864         info = kzalloc(sizeof(*info), GFP_KERNEL);
 865         if (!info)
 866                 return -ENOMEM;
 867
 868         info->p_dev = link;
 869         link->priv = info;
 870
 871         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 872         link->io.NumPorts1 = 8;
 873         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 874         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
 875
 876         link->irq.Handler = bluecard_interrupt;
 877         link->irq.Instance = info;
 878
 879         link->conf.Attributes = CONF_ENABLE_IRQ;
 880         link->conf.IntType = INT_MEMORY_AND_IO;
 881
 882         return bluecard_config(link);
 883 }
 884
 885
 886 static void bluecard_detach(struct pcmcia_device *link)
 887 {
 888         bluecard_info_t *info = link->priv;
 889
 890         bluecard_release(link);
 891         kfree(info);
 892 }
 893
 894
 895 static int bluecard_config(struct pcmcia_device *link)
 896 {
 897         bluecard_info_t *info = link->priv;
 898         int i, n;
 899
 900         link->conf.ConfigIndex = 0x20;
 901         link->io.NumPorts1 = 64;
 902         link->io.IOAddrLines = 6;
 903
 904         for (n = 0; n < 0x400; n += 0x40) {
 905                 link->io.BasePort1 = n ^ 0x300;
 906                 i = pcmcia_request_io(link, &link->io);
 907                 if (i == CS_SUCCESS)
 908                         break;
 909         }
 910
 911         if (i != CS_SUCCESS) {
 912                 cs_error(link, RequestIO, i);
 913                 goto failed;
 914         }
 915
 916         i = pcmcia_request_irq(link, &link->irq);
 917         if (i != CS_SUCCESS) {
 918                 cs_error(link, RequestIRQ, i);
 919                 link->irq.AssignedIRQ = 0;
 920         }
 921
 922         i = pcmcia_request_configuration(link, &link->conf);
 923         if (i != CS_SUCCESS) {
 924                 cs_error(link, RequestConfiguration, i);
 925                 goto failed;
 926         }
 927
 928         if (bluecard_open(info) != 0)
 929                 goto failed;
 930
 931         strcpy(info->node.dev_name, info->hdev->name);
 932         link->dev_node = &info->node;
 933
 934         return 0;
 935
 936 failed:
 937         bluecard_release(link);
 938         return -ENODEV;
 939 }
 940
 941
 942 static void bluecard_release(struct pcmcia_device *link)
 943 {
 944         bluecard_info_t *info = link->priv;
 945
 946         bluecard_close(info);
 947
 948         del_timer(&(info->timer));
 949
 950         pcmcia_disable_device(link);
 951 }
 952
 953 static struct pcmcia_device_id bluecard_ids[] = {
 954         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 955         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 956         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 957         PCMCIA_DEVICE_NULL
 958 };
 959 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 960
 961 static struct pcmcia_driver bluecard_driver = {
 962         .owner          = THIS_MODULE,
 963         .drv            = {
 964                 .name   = "bluecard_cs",
 965         },
 966         .probe          = bluecard_probe,
 967         .remove         = bluecard_detach,
 968         .id_table       = bluecard_ids,
 969 };
 970
 971 static int __init init_bluecard_cs(void)
 972 {
 973         return pcmcia_register_driver(&bluecard_driver);
 974 }
 975
 976
 977 static void __exit exit_bluecard_cs(void)
 978 {
 979         pcmcia_unregister_driver(&bluecard_driver);
 980 }
 981
 982 module_init(init_bluecard_cs);
 983 module_exit(exit_bluecard_cs);