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/config.h>
  24 #include <linux/module.h>
  25
  26 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/slab.h>
  29 #include <linux/types.h>
  30 #include <linux/sched.h>
  31 #include <linux/delay.h>
  32 #include <linux/timer.h>
  33 #include <linux/errno.h>
  34 #include <linux/ptrace.h>
  35 #include <linux/ioport.h>
  36 #include <linux/spinlock.h>
  37 #include <linux/moduleparam.h>
  38 #include <linux/wait.h>
  39
  40 #include <linux/skbuff.h>
  41 #include <asm/io.h>
  42
  43 #include <pcmcia/cs_types.h>
  44 #include <pcmcia/cs.h>
  45 #include <pcmcia/cistpl.h>
  46 #include <pcmcia/ciscode.h>
  47 #include <pcmcia/ds.h>
  48 #include <pcmcia/cisreg.h>
  49
  50 #include <net/bluetooth/bluetooth.h>
  51 #include <net/bluetooth/hci_core.h>
  52
  53
  54
  55 /* ======================== Module parameters ======================== */
  56
  57
  58 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  59 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
  60 MODULE_LICENSE("GPL");
  61
  62
  63
  64 /* ======================== Local structures ======================== */
  65
  66
  67 typedef struct bluecard_info_t {
  68         struct pcmcia_device *p_dev;
  69         dev_node_t node;
  70
  71         struct hci_dev *hdev;
  72
  73         spinlock_t lock;                /* For serializing operations */
  74         struct timer_list timer;        /* For LED control */
  75
  76         struct sk_buff_head txq;
  77         unsigned long tx_state;
  78
  79         unsigned long rx_state;
  80         unsigned long rx_count;
  81         struct sk_buff *rx_skb;
  82
  83         unsigned char ctrl_reg;
  84         unsigned long hw_state;         /* Status of the hardware and LED control */
  85 } bluecard_info_t;
  86
  87
  88 static int bluecard_config(struct pcmcia_device *link);
  89 static void bluecard_release(struct pcmcia_device *link);
  90
  91 static void bluecard_detach(struct pcmcia_device *p_dev);
  92
  93
  94 /* Default baud rate: 57600, 115200, 230400 or 460800 */
  95 #define DEFAULT_BAUD_RATE  230400
  96
  97
  98 /* Hardware states */
  99 #define CARD_READY             1
 100 #define CARD_HAS_PCCARD_ID     4
 101 #define CARD_HAS_POWER_LED     5
 102 #define CARD_HAS_ACTIVITY_LED  6
 103
 104 /* Transmit states  */
 105 #define XMIT_SENDING         1
 106 #define XMIT_WAKEUP          2
 107 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 108 #define XMIT_BUF_ONE_READY   6
 109 #define XMIT_BUF_TWO_READY   7
 110 #define XMIT_SENDING_READY   8
 111
 112 /* Receiver states */
 113 #define RECV_WAIT_PACKET_TYPE   0
 114 #define RECV_WAIT_EVENT_HEADER  1
 115 #define RECV_WAIT_ACL_HEADER    2
 116 #define RECV_WAIT_SCO_HEADER    3
 117 #define RECV_WAIT_DATA          4
 118
 119 /* Special packet types */
 120 #define PKT_BAUD_RATE_57600   0x80
 121 #define PKT_BAUD_RATE_115200  0x81
 122 #define PKT_BAUD_RATE_230400  0x82
 123 #define PKT_BAUD_RATE_460800  0x83
 124
 125
 126 /* These are the register offsets */
 127 #define REG_COMMAND     0x20
 128 #define REG_INTERRUPT   0x21
 129 #define REG_CONTROL     0x22
 130 #define REG_RX_CONTROL  0x24
 131 #define REG_CARD_RESET  0x30
 132 #define REG_LED_CTRL    0x30
 133
 134 /* REG_COMMAND */
 135 #define REG_COMMAND_TX_BUF_ONE  0x01
 136 #define REG_COMMAND_TX_BUF_TWO  0x02
 137 #define REG_COMMAND_RX_BUF_ONE  0x04
 138 #define REG_COMMAND_RX_BUF_TWO  0x08
 139 #define REG_COMMAND_RX_WIN_ONE  0x00
 140 #define REG_COMMAND_RX_WIN_TWO  0x10
 141
 142 /* REG_CONTROL */
 143 #define REG_CONTROL_BAUD_RATE_57600   0x00
 144 #define REG_CONTROL_BAUD_RATE_115200  0x01
 145 #define REG_CONTROL_BAUD_RATE_230400  0x02
 146 #define REG_CONTROL_BAUD_RATE_460800  0x03
 147 #define REG_CONTROL_RTS               0x04
 148 #define REG_CONTROL_BT_ON             0x08
 149 #define REG_CONTROL_BT_RESET          0x10
 150 #define REG_CONTROL_BT_RES_PU         0x20
 151 #define REG_CONTROL_INTERRUPT         0x40
 152 #define REG_CONTROL_CARD_RESET        0x80
 153
 154 /* REG_RX_CONTROL */
 155 #define RTS_LEVEL_SHIFT_BITS  0x02
 156
 157
 158
 159 /* ======================== LED handling routines ======================== */
 160
 161
 162 static void bluecard_activity_led_timeout(u_long arg)
 163 {
 164         bluecard_info_t *info = (bluecard_info_t *)arg;
 165         unsigned int iobase = info->p_dev->io.BasePort1;
 166
 167         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 168                 return;
 169
 170         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 171                 /* Disable activity LED */
 172                 outb(0x08 | 0x20, iobase + 0x30);
 173         } else {
 174                 /* Disable power LED */
 175                 outb(0x00, iobase + 0x30);
 176         }
 177 }
 178
 179
 180 static void bluecard_enable_activity_led(bluecard_info_t *info)
 181 {
 182         unsigned int iobase = info->p_dev->io.BasePort1;
 183
 184         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 185                 return;
 186
 187         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 188                 /* Enable activity LED */
 189                 outb(0x10 | 0x40, iobase + 0x30);
 190
 191                 /* Stop the LED after HZ/4 */
 192                 mod_timer(&(info->timer), jiffies + HZ / 4);
 193         } else {
 194                 /* Enable power LED */
 195                 outb(0x08 | 0x20, iobase + 0x30);
 196
 197                 /* Stop the LED after HZ/2 */
 198                 mod_timer(&(info->timer), jiffies + HZ / 2);
 199         }
 200 }
 201
 202
 203
 204 /* ======================== Interrupt handling ======================== */
 205
 206
 207 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 208 {
 209         int i, actual;
 210
 211         actual = (len > 15) ? 15 : len;
 212
 213         outb_p(actual, iobase + offset);
 214
 215         for (i = 0; i < actual; i++)
 216                 outb_p(buf[i], iobase + offset + i + 1);
 217
 218         return actual;
 219 }
 220
 221
 222 static void bluecard_write_wakeup(bluecard_info_t *info)
 223 {
 224         if (!info) {
 225                 BT_ERR("Unknown device");
 226                 return;
 227         }
 228
 229         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 230                 return;
 231
 232         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 233                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 234                 return;
 235         }
 236
 237         do {
 238                 register unsigned int iobase = info->p_dev->io.BasePort1;
 239                 register unsigned int offset;
 240                 register unsigned char command;
 241                 register unsigned long ready_bit;
 242                 register struct sk_buff *skb;
 243                 register int len;
 244
 245                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 246
 247                 if (!pcmcia_dev_present(info->p_dev))
 248                         return;
 249
 250                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 251                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 252                                 break;
 253                         offset = 0x10;
 254                         command = REG_COMMAND_TX_BUF_TWO;
 255                         ready_bit = XMIT_BUF_TWO_READY;
 256                 } else {
 257                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 258                                 break;
 259                         offset = 0x00;
 260                         command = REG_COMMAND_TX_BUF_ONE;
 261                         ready_bit = XMIT_BUF_ONE_READY;
 262                 }
 263
 264                 if (!(skb = skb_dequeue(&(info->txq))))
 265                         break;
 266
 267                 if (bt_cb(skb)->pkt_type & 0x80) {
 268                         /* Disable RTS */
 269                         info->ctrl_reg |= REG_CONTROL_RTS;
 270                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 271                 }
 272
 273                 /* Activate LED */
 274                 bluecard_enable_activity_led(info);
 275
 276                 /* Send frame */
 277                 len = bluecard_write(iobase, offset, skb->data, skb->len);
 278
 279                 /* Tell the FPGA to send the data */
 280                 outb_p(command, iobase + REG_COMMAND);
 281
 282                 /* Mark the buffer as dirty */
 283                 clear_bit(ready_bit, &(info->tx_state));
 284
 285                 if (bt_cb(skb)->pkt_type & 0x80) {
 286                         DECLARE_WAIT_QUEUE_HEAD(wq);
 287                         DEFINE_WAIT(wait);
 288
 289                         unsigned char baud_reg;
 290
 291                         switch (bt_cb(skb)->pkt_type) {
 292                         case PKT_BAUD_RATE_460800:
 293                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 294                                 break;
 295                         case PKT_BAUD_RATE_230400:
 296                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 297                                 break;
 298                         case PKT_BAUD_RATE_115200:
 299                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 300                                 break;
 301                         case PKT_BAUD_RATE_57600:
 302                                 /* Fall through... */
 303                         default:
 304                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 305                                 break;
 306                         }
 307
 308                         /* Wait until the command reaches the baseband */
 309                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 310                         schedule_timeout(HZ/10);
 311                         finish_wait(&wq, &wait);
 312
 313                         /* Set baud on baseband */
 314                         info->ctrl_reg &= ~0x03;
 315                         info->ctrl_reg |= baud_reg;
 316                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 317
 318                         /* Enable RTS */
 319                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 320                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 321
 322                         /* Wait before the next HCI packet can be send */
 323                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 324                         schedule_timeout(HZ);
 325                         finish_wait(&wq, &wait);
 326                 }
 327
 328                 if (len == skb->len) {
 329                         kfree_skb(skb);
 330                 } else {
 331                         skb_pull(skb, len);
 332                         skb_queue_head(&(info->txq), skb);
 333                 }
 334
 335                 info->hdev->stat.byte_tx += len;
 336
 337                 /* Change buffer */
 338                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 339
 340         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 341
 342         clear_bit(XMIT_SENDING, &(info->tx_state));
 343 }
 344
 345
 346 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 347 {
 348         int i, n, len;
 349
 350         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 351
 352         len = inb(iobase + offset);
 353         n = 0;
 354         i = 1;
 355
 356         while (n < len) {
 357
 358                 if (i == 16) {
 359                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 360                         i = 0;
 361                 }
 362
 363                 buf[n] = inb(iobase + offset + i);
 364
 365                 n++;
 366                 i++;
 367
 368         }
 369
 370         return len;
 371 }
 372
 373
 374 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 375 {
 376         unsigned int iobase;
 377         unsigned char buf[31];
 378         int i, len;
 379
 380         if (!info) {
 381                 BT_ERR("Unknown device");
 382                 return;
 383         }
 384
 385         iobase = info->p_dev->io.BasePort1;
 386
 387         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 388                 bluecard_enable_activity_led(info);
 389
 390         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 391
 392         for (i = 0; i < len; i++) {
 393
 394                 /* Allocate packet */
 395                 if (info->rx_skb == NULL) {
 396                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 397                         info->rx_count = 0;
 398                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 399                                 BT_ERR("Can't allocate mem for new packet");
 400                                 return;
 401                         }
 402                 }
 403
 404                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 405
 406                         info->rx_skb->dev = (void *) info->hdev;
 407                         bt_cb(info->rx_skb)->pkt_type = buf[i];
 408
 409                         switch (bt_cb(info->rx_skb)->pkt_type) {
 410
 411                         case 0x00:
 412                                 /* init packet */
 413                                 if (offset != 0x00) {
 414                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 415                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 416                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 417                                         bluecard_write_wakeup(info);
 418                                 }
 419
 420                                 kfree_skb(info->rx_skb);
 421                                 info->rx_skb = NULL;
 422                                 break;
 423
 424                         case HCI_EVENT_PKT:
 425                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 426                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 427                                 break;
 428
 429                         case HCI_ACLDATA_PKT:
 430                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 431                                 info->rx_count = HCI_ACL_HDR_SIZE;
 432                                 break;
 433
 434                         case HCI_SCODATA_PKT:
 435                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 436                                 info->rx_count = HCI_SCO_HDR_SIZE;
 437                                 break;
 438
 439                         default:
 440                                 /* unknown packet */
 441                                 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
 442                                 info->hdev->stat.err_rx++;
 443
 444                                 kfree_skb(info->rx_skb);
 445                                 info->rx_skb = NULL;
 446                                 break;
 447
 448                         }
 449
 450                 } else {
 451
 452                         *skb_put(info->rx_skb, 1) = buf[i];
 453                         info->rx_count--;
 454
 455                         if (info->rx_count == 0) {
 456
 457                                 int dlen;
 458                                 struct hci_event_hdr *eh;
 459                                 struct hci_acl_hdr *ah;
 460                                 struct hci_sco_hdr *sh;
 461
 462                                 switch (info->rx_state) {
 463
 464                                 case RECV_WAIT_EVENT_HEADER:
 465                                         eh = (struct hci_event_hdr *)(info->rx_skb->data);
 466                                         info->rx_state = RECV_WAIT_DATA;
 467                                         info->rx_count = eh->plen;
 468                                         break;
 469
 470                                 case RECV_WAIT_ACL_HEADER:
 471                                         ah = (struct hci_acl_hdr *)(info->rx_skb->data);
 472                                         dlen = __le16_to_cpu(ah->dlen);
 473                                         info->rx_state = RECV_WAIT_DATA;
 474                                         info->rx_count = dlen;
 475                                         break;
 476
 477                                 case RECV_WAIT_SCO_HEADER:
 478                                         sh = (struct hci_sco_hdr *)(info->rx_skb->data);
 479                                         info->rx_state = RECV_WAIT_DATA;
 480                                         info->rx_count = sh->dlen;
 481                                         break;
 482
 483                                 case RECV_WAIT_DATA:
 484                                         hci_recv_frame(info->rx_skb);
 485                                         info->rx_skb = NULL;
 486                                         break;
 487
 488                                 }
 489
 490                         }
 491
 492                 }
 493
 494
 495         }
 496
 497         info->hdev->stat.byte_rx += len;
 498 }
 499
 500
 501 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 502 {
 503         bluecard_info_t *info = dev_inst;
 504         unsigned int iobase;
 505         unsigned char reg;
 506
 507         if (!info || !info->hdev) {
 508                 BT_ERR("Call of irq %d for unknown device", irq);
 509                 return IRQ_NONE;
 510         }
 511
 512         if (!test_bit(CARD_READY, &(info->hw_state)))
 513                 return IRQ_HANDLED;
 514
 515         iobase = info->p_dev->io.BasePort1;
 516
 517         spin_lock(&(info->lock));
 518
 519         /* Disable interrupt */
 520         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 521         outb(info->ctrl_reg, iobase + REG_CONTROL);
 522
 523         reg = inb(iobase + REG_INTERRUPT);
 524
 525         if ((reg != 0x00) && (reg != 0xff)) {
 526
 527                 if (reg & 0x04) {
 528                         bluecard_receive(info, 0x00);
 529                         outb(0x04, iobase + REG_INTERRUPT);
 530                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 531                 }
 532
 533                 if (reg & 0x08) {
 534                         bluecard_receive(info, 0x10);
 535                         outb(0x08, iobase + REG_INTERRUPT);
 536                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 537                 }
 538
 539                 if (reg & 0x01) {
 540                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 541                         outb(0x01, iobase + REG_INTERRUPT);
 542                         bluecard_write_wakeup(info);
 543                 }
 544
 545                 if (reg & 0x02) {
 546                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 547                         outb(0x02, iobase + REG_INTERRUPT);
 548                         bluecard_write_wakeup(info);
 549                 }
 550
 551         }
 552
 553         /* Enable interrupt */
 554         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 555         outb(info->ctrl_reg, iobase + REG_CONTROL);
 556
 557         spin_unlock(&(info->lock));
 558
 559         return IRQ_HANDLED;
 560 }
 561
 562
 563
 564 /* ======================== Device specific HCI commands ======================== */
 565
 566
 567 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 568 {
 569         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 570         struct sk_buff *skb;
 571
 572         /* Ericsson baud rate command */
 573         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 574
 575         if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 576                 BT_ERR("Can't allocate mem for new packet");
 577                 return -1;
 578         }
 579
 580         switch (baud) {
 581         case 460800:
 582                 cmd[4] = 0x00;
 583                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
 584                 break;
 585         case 230400:
 586                 cmd[4] = 0x01;
 587                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
 588                 break;
 589         case 115200:
 590                 cmd[4] = 0x02;
 591                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
 592                 break;
 593         case 57600:
 594                 /* Fall through... */
 595         default:
 596                 cmd[4] = 0x03;
 597                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
 598                 break;
 599         }
 600
 601         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 602
 603         skb_queue_tail(&(info->txq), skb);
 604
 605         bluecard_write_wakeup(info);
 606
 607         return 0;
 608 }
 609
 610
 611
 612 /* ======================== HCI interface ======================== */
 613
 614
 615 static int bluecard_hci_flush(struct hci_dev *hdev)
 616 {
 617         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 618
 619         /* Drop TX queue */
 620         skb_queue_purge(&(info->txq));
 621
 622         return 0;
 623 }
 624
 625
 626 static int bluecard_hci_open(struct hci_dev *hdev)
 627 {
 628         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 629         unsigned int iobase = info->p_dev->io.BasePort1;
 630
 631         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 632                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 633
 634         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
 635                 return 0;
 636
 637         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 638                 /* Enable LED */
 639                 outb(0x08 | 0x20, iobase + 0x30);
 640         }
 641
 642         return 0;
 643 }
 644
 645
 646 static int bluecard_hci_close(struct hci_dev *hdev)
 647 {
 648         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 649         unsigned int iobase = info->p_dev->io.BasePort1;
 650
 651         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 652                 return 0;
 653
 654         bluecard_hci_flush(hdev);
 655
 656         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 657                 /* Disable LED */
 658                 outb(0x00, iobase + 0x30);
 659         }
 660
 661         return 0;
 662 }
 663
 664
 665 static int bluecard_hci_send_frame(struct sk_buff *skb)
 666 {
 667         bluecard_info_t *info;
 668         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 669
 670         if (!hdev) {
 671                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 672                 return -ENODEV;
 673         }
 674
 675         info = (bluecard_info_t *)(hdev->driver_data);
 676
 677         switch (bt_cb(skb)->pkt_type) {
 678         case HCI_COMMAND_PKT:
 679                 hdev->stat.cmd_tx++;
 680                 break;
 681         case HCI_ACLDATA_PKT:
 682                 hdev->stat.acl_tx++;
 683                 break;
 684         case HCI_SCODATA_PKT:
 685                 hdev->stat.sco_tx++;
 686                 break;
 687         };
 688
 689         /* Prepend skb with frame type */
 690         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 691         skb_queue_tail(&(info->txq), skb);
 692
 693         bluecard_write_wakeup(info);
 694
 695         return 0;
 696 }
 697
 698
 699 static void bluecard_hci_destruct(struct hci_dev *hdev)
 700 {
 701 }
 702
 703
 704 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 705 {
 706         return -ENOIOCTLCMD;
 707 }
 708
 709
 710
 711 /* ======================== Card services HCI interaction ======================== */
 712
 713
 714 static int bluecard_open(bluecard_info_t *info)
 715 {
 716         unsigned int iobase = info->p_dev->io.BasePort1;
 717         struct hci_dev *hdev;
 718         unsigned char id;
 719
 720         spin_lock_init(&(info->lock));
 721
 722         init_timer(&(info->timer));
 723         info->timer.function = &bluecard_activity_led_timeout;
 724         info->timer.data = (u_long)info;
 725
 726         skb_queue_head_init(&(info->txq));
 727
 728         info->rx_state = RECV_WAIT_PACKET_TYPE;
 729         info->rx_count = 0;
 730         info->rx_skb = NULL;
 731
 732         /* Initialize HCI device */
 733         hdev = hci_alloc_dev();
 734         if (!hdev) {
 735                 BT_ERR("Can't allocate HCI device");
 736                 return -ENOMEM;
 737         }
 738
 739         info->hdev = hdev;
 740
 741         hdev->type = HCI_PCCARD;
 742         hdev->driver_data = info;
 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 first_tuple(struct pcmcia_device *handle, tuple_t *tuple, cisparse_t *parse)
 896 {
 897         int i;
 898
 899         i = pcmcia_get_first_tuple(handle, tuple);
 900         if (i != CS_SUCCESS)
 901                 return CS_NO_MORE_ITEMS;
 902
 903         i = pcmcia_get_tuple_data(handle, tuple);
 904         if (i != CS_SUCCESS)
 905                 return i;
 906
 907         return pcmcia_parse_tuple(handle, tuple, parse);
 908 }
 909
 910 static int bluecard_config(struct pcmcia_device *link)
 911 {
 912         bluecard_info_t *info = link->priv;
 913         tuple_t tuple;
 914         u_short buf[256];
 915         cisparse_t parse;
 916         int i, n, last_ret, last_fn;
 917
 918         tuple.TupleData = (cisdata_t *)buf;
 919         tuple.TupleOffset = 0;
 920         tuple.TupleDataMax = 255;
 921         tuple.Attributes = 0;
 922
 923         /* Get configuration register information */
 924         tuple.DesiredTuple = CISTPL_CONFIG;
 925         last_ret = first_tuple(link, &tuple, &parse);
 926         if (last_ret != CS_SUCCESS) {
 927                 last_fn = ParseTuple;
 928                 goto cs_failed;
 929         }
 930         link->conf.ConfigBase = parse.config.base;
 931         link->conf.Present = parse.config.rmask[0];
 932
 933         link->conf.ConfigIndex = 0x20;
 934         link->io.NumPorts1 = 64;
 935         link->io.IOAddrLines = 6;
 936
 937         for (n = 0; n < 0x400; n += 0x40) {
 938                 link->io.BasePort1 = n ^ 0x300;
 939                 i = pcmcia_request_io(link, &link->io);
 940                 if (i == CS_SUCCESS)
 941                         break;
 942         }
 943
 944         if (i != CS_SUCCESS) {
 945                 cs_error(link, RequestIO, i);
 946                 goto failed;
 947         }
 948
 949         i = pcmcia_request_irq(link, &link->irq);
 950         if (i != CS_SUCCESS) {
 951                 cs_error(link, RequestIRQ, i);
 952                 link->irq.AssignedIRQ = 0;
 953         }
 954
 955         i = pcmcia_request_configuration(link, &link->conf);
 956         if (i != CS_SUCCESS) {
 957                 cs_error(link, RequestConfiguration, i);
 958                 goto failed;
 959         }
 960
 961         if (bluecard_open(info) != 0)
 962                 goto failed;
 963
 964         strcpy(info->node.dev_name, info->hdev->name);
 965         link->dev_node = &info->node;
 966
 967         return 0;
 968
 969 cs_failed:
 970         cs_error(link, last_fn, last_ret);
 971
 972 failed:
 973         bluecard_release(link);
 974         return -ENODEV;
 975 }
 976
 977
 978 static void bluecard_release(struct pcmcia_device *link)
 979 {
 980         bluecard_info_t *info = link->priv;
 981
 982         bluecard_close(info);
 983
 984         del_timer(&(info->timer));
 985
 986         pcmcia_disable_device(link);
 987 }
 988
 989 static struct pcmcia_device_id bluecard_ids[] = {
 990         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
 991         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
 992         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
 993         PCMCIA_DEVICE_NULL
 994 };
 995 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
 996
 997 static struct pcmcia_driver bluecard_driver = {
 998         .owner          = THIS_MODULE,
 999         .drv            = {
1000                 .name   = "bluecard_cs",
1001         },
1002         .probe          = bluecard_probe,
1003         .remove         = bluecard_detach,
1004         .id_table       = bluecard_ids,
1005 };
1006
1007 static int __init init_bluecard_cs(void)
1008 {
1009         return pcmcia_register_driver(&bluecard_driver);
1010 }
1011
1012
1013 static void __exit exit_bluecard_cs(void)
1014 {
1015         pcmcia_unregister_driver(&bluecard_driver);
1016 }
1017
1018 module_init(init_bluecard_cs);
1019 module_exit(exit_bluecard_cs);