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
  39 #include <linux/skbuff.h>
  40 #include <asm/io.h>
  41
  42 #include <pcmcia/version.h>
  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         dev_link_t link;
  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 void bluecard_config(dev_link_t *link);
  89 static void bluecard_release(dev_link_t *link);
  90 static int bluecard_event(event_t event, int priority, event_callback_args_t *args);
  91
  92 static dev_info_t dev_info = "bluecard_cs";
  93
  94 static dev_link_t *bluecard_attach(void);
  95 static void bluecard_detach(dev_link_t *);
  96
  97 static dev_link_t *dev_list = NULL;
  98
  99
 100 /* Default baud rate: 57600, 115200, 230400 or 460800 */
 101 #define DEFAULT_BAUD_RATE  230400
 102
 103
 104 /* Hardware states */
 105 #define CARD_READY             1
 106 #define CARD_HAS_PCCARD_ID     4
 107 #define CARD_HAS_POWER_LED     5
 108 #define CARD_HAS_ACTIVITY_LED  6
 109
 110 /* Transmit states  */
 111 #define XMIT_SENDING         1
 112 #define XMIT_WAKEUP          2
 113 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 114 #define XMIT_BUF_ONE_READY   6
 115 #define XMIT_BUF_TWO_READY   7
 116 #define XMIT_SENDING_READY   8
 117
 118 /* Receiver states */
 119 #define RECV_WAIT_PACKET_TYPE   0
 120 #define RECV_WAIT_EVENT_HEADER  1
 121 #define RECV_WAIT_ACL_HEADER    2
 122 #define RECV_WAIT_SCO_HEADER    3
 123 #define RECV_WAIT_DATA          4
 124
 125 /* Special packet types */
 126 #define PKT_BAUD_RATE_57600   0x80
 127 #define PKT_BAUD_RATE_115200  0x81
 128 #define PKT_BAUD_RATE_230400  0x82
 129 #define PKT_BAUD_RATE_460800  0x83
 130
 131
 132 /* These are the register offsets */
 133 #define REG_COMMAND     0x20
 134 #define REG_INTERRUPT   0x21
 135 #define REG_CONTROL     0x22
 136 #define REG_RX_CONTROL  0x24
 137 #define REG_CARD_RESET  0x30
 138 #define REG_LED_CTRL    0x30
 139
 140 /* REG_COMMAND */
 141 #define REG_COMMAND_TX_BUF_ONE  0x01
 142 #define REG_COMMAND_TX_BUF_TWO  0x02
 143 #define REG_COMMAND_RX_BUF_ONE  0x04
 144 #define REG_COMMAND_RX_BUF_TWO  0x08
 145 #define REG_COMMAND_RX_WIN_ONE  0x00
 146 #define REG_COMMAND_RX_WIN_TWO  0x10
 147
 148 /* REG_CONTROL */
 149 #define REG_CONTROL_BAUD_RATE_57600   0x00
 150 #define REG_CONTROL_BAUD_RATE_115200  0x01
 151 #define REG_CONTROL_BAUD_RATE_230400  0x02
 152 #define REG_CONTROL_BAUD_RATE_460800  0x03
 153 #define REG_CONTROL_RTS               0x04
 154 #define REG_CONTROL_BT_ON             0x08
 155 #define REG_CONTROL_BT_RESET          0x10
 156 #define REG_CONTROL_BT_RES_PU         0x20
 157 #define REG_CONTROL_INTERRUPT         0x40
 158 #define REG_CONTROL_CARD_RESET        0x80
 159
 160 /* REG_RX_CONTROL */
 161 #define RTS_LEVEL_SHIFT_BITS  0x02
 162
 163
 164
 165 /* ======================== LED handling routines ======================== */
 166
 167
 168 static void bluecard_activity_led_timeout(u_long arg)
 169 {
 170         bluecard_info_t *info = (bluecard_info_t *)arg;
 171         unsigned int iobase = info->link.io.BasePort1;
 172
 173         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 174                 return;
 175
 176         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 177                 /* Disable activity LED */
 178                 outb(0x08 | 0x20, iobase + 0x30);
 179         } else {
 180                 /* Disable power LED */
 181                 outb(0x00, iobase + 0x30);
 182         }
 183 }
 184
 185
 186 static void bluecard_enable_activity_led(bluecard_info_t *info)
 187 {
 188         unsigned int iobase = info->link.io.BasePort1;
 189
 190         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 191                 return;
 192
 193         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 194                 /* Enable activity LED */
 195                 outb(0x10 | 0x40, iobase + 0x30);
 196
 197                 /* Stop the LED after HZ/4 */
 198                 mod_timer(&(info->timer), jiffies + HZ / 4);
 199         } else {
 200                 /* Enable power LED */
 201                 outb(0x08 | 0x20, iobase + 0x30);
 202
 203                 /* Stop the LED after HZ/2 */
 204                 mod_timer(&(info->timer), jiffies + HZ / 2);
 205         }
 206 }
 207
 208
 209
 210 /* ======================== Interrupt handling ======================== */
 211
 212
 213 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 214 {
 215         int i, actual;
 216
 217         actual = (len > 15) ? 15 : len;
 218
 219         outb_p(actual, iobase + offset);
 220
 221         for (i = 0; i < actual; i++)
 222                 outb_p(buf[i], iobase + offset + i + 1);
 223
 224         return actual;
 225 }
 226
 227
 228 static void bluecard_write_wakeup(bluecard_info_t *info)
 229 {
 230         if (!info) {
 231                 BT_ERR("Unknown device");
 232                 return;
 233         }
 234
 235         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 236                 return;
 237
 238         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 239                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 240                 return;
 241         }
 242
 243         do {
 244                 register unsigned int iobase = info->link.io.BasePort1;
 245                 register unsigned int offset;
 246                 register unsigned char command;
 247                 register unsigned long ready_bit;
 248                 register struct sk_buff *skb;
 249                 register int len;
 250
 251                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 252
 253                 if (!(info->link.state & DEV_PRESENT))
 254                         return;
 255
 256                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 257                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 258                                 break;
 259                         offset = 0x10;
 260                         command = REG_COMMAND_TX_BUF_TWO;
 261                         ready_bit = XMIT_BUF_TWO_READY;
 262                 } else {
 263                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 264                                 break;
 265                         offset = 0x00;
 266                         command = REG_COMMAND_TX_BUF_ONE;
 267                         ready_bit = XMIT_BUF_ONE_READY;
 268                 }
 269
 270                 if (!(skb = skb_dequeue(&(info->txq))))
 271                         break;
 272
 273                 if (skb->pkt_type & 0x80) {
 274                         /* Disable RTS */
 275                         info->ctrl_reg |= REG_CONTROL_RTS;
 276                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 277                 }
 278
 279                 /* Activate LED */
 280                 bluecard_enable_activity_led(info);
 281
 282                 /* Send frame */
 283                 len = bluecard_write(iobase, offset, skb->data, skb->len);
 284
 285                 /* Tell the FPGA to send the data */
 286                 outb_p(command, iobase + REG_COMMAND);
 287
 288                 /* Mark the buffer as dirty */
 289                 clear_bit(ready_bit, &(info->tx_state));
 290
 291                 if (skb->pkt_type & 0x80) {
 292
 293                         wait_queue_head_t wait;
 294                         unsigned char baud_reg;
 295
 296                         switch (skb->pkt_type) {
 297                         case PKT_BAUD_RATE_460800:
 298                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 299                                 break;
 300                         case PKT_BAUD_RATE_230400:
 301                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 302                                 break;
 303                         case PKT_BAUD_RATE_115200:
 304                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 305                                 break;
 306                         case PKT_BAUD_RATE_57600:
 307                                 /* Fall through... */
 308                         default:
 309                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 310                                 break;
 311                         }
 312
 313                         /* Wait until the command reaches the baseband */
 314                         init_waitqueue_head(&wait);
 315                         interruptible_sleep_on_timeout(&wait, HZ / 10);
 316
 317                         /* Set baud on baseband */
 318                         info->ctrl_reg &= ~0x03;
 319                         info->ctrl_reg |= baud_reg;
 320                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 321
 322                         /* Enable RTS */
 323                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 324                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 325
 326                         /* Wait before the next HCI packet can be send */
 327                         interruptible_sleep_on_timeout(&wait, HZ);
 328
 329                 }
 330
 331                 if (len == skb->len) {
 332                         kfree_skb(skb);
 333                 } else {
 334                         skb_pull(skb, len);
 335                         skb_queue_head(&(info->txq), skb);
 336                 }
 337
 338                 info->hdev->stat.byte_tx += len;
 339
 340                 /* Change buffer */
 341                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 342
 343         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 344
 345         clear_bit(XMIT_SENDING, &(info->tx_state));
 346 }
 347
 348
 349 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 350 {
 351         int i, n, len;
 352
 353         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 354
 355         len = inb(iobase + offset);
 356         n = 0;
 357         i = 1;
 358
 359         while (n < len) {
 360
 361                 if (i == 16) {
 362                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 363                         i = 0;
 364                 }
 365
 366                 buf[n] = inb(iobase + offset + i);
 367
 368                 n++;
 369                 i++;
 370
 371         }
 372
 373         return len;
 374 }
 375
 376
 377 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 378 {
 379         unsigned int iobase;
 380         unsigned char buf[31];
 381         int i, len;
 382
 383         if (!info) {
 384                 BT_ERR("Unknown device");
 385                 return;
 386         }
 387
 388         iobase = info->link.io.BasePort1;
 389
 390         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 391                 bluecard_enable_activity_led(info);
 392
 393         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 394
 395         for (i = 0; i < len; i++) {
 396
 397                 /* Allocate packet */
 398                 if (info->rx_skb == NULL) {
 399                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 400                         info->rx_count = 0;
 401                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 402                                 BT_ERR("Can't allocate mem for new packet");
 403                                 return;
 404                         }
 405                 }
 406
 407                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 408
 409                         info->rx_skb->dev = (void *) info->hdev;
 410                         info->rx_skb->pkt_type = buf[i];
 411
 412                         switch (info->rx_skb->pkt_type) {
 413
 414                         case 0x00:
 415                                 /* init packet */
 416                                 if (offset != 0x00) {
 417                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 418                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 419                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 420                                         bluecard_write_wakeup(info);
 421                                 }
 422
 423                                 kfree_skb(info->rx_skb);
 424                                 info->rx_skb = NULL;
 425                                 break;
 426
 427                         case HCI_EVENT_PKT:
 428                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 429                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 430                                 break;
 431
 432                         case HCI_ACLDATA_PKT:
 433                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 434                                 info->rx_count = HCI_ACL_HDR_SIZE;
 435                                 break;
 436
 437                         case HCI_SCODATA_PKT:
 438                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 439                                 info->rx_count = HCI_SCO_HDR_SIZE;
 440                                 break;
 441
 442                         default:
 443                                 /* unknown packet */
 444                                 BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type);
 445                                 info->hdev->stat.err_rx++;
 446
 447                                 kfree_skb(info->rx_skb);
 448                                 info->rx_skb = NULL;
 449                                 break;
 450
 451                         }
 452
 453                 } else {
 454
 455                         *skb_put(info->rx_skb, 1) = buf[i];
 456                         info->rx_count--;
 457
 458                         if (info->rx_count == 0) {
 459
 460                                 int dlen;
 461                                 struct hci_event_hdr *eh;
 462                                 struct hci_acl_hdr *ah;
 463                                 struct hci_sco_hdr *sh;
 464
 465                                 switch (info->rx_state) {
 466
 467                                 case RECV_WAIT_EVENT_HEADER:
 468                                         eh = (struct hci_event_hdr *)(info->rx_skb->data);
 469                                         info->rx_state = RECV_WAIT_DATA;
 470                                         info->rx_count = eh->plen;
 471                                         break;
 472
 473                                 case RECV_WAIT_ACL_HEADER:
 474                                         ah = (struct hci_acl_hdr *)(info->rx_skb->data);
 475                                         dlen = __le16_to_cpu(ah->dlen);
 476                                         info->rx_state = RECV_WAIT_DATA;
 477                                         info->rx_count = dlen;
 478                                         break;
 479
 480                                 case RECV_WAIT_SCO_HEADER:
 481                                         sh = (struct hci_sco_hdr *)(info->rx_skb->data);
 482                                         info->rx_state = RECV_WAIT_DATA;
 483                                         info->rx_count = sh->dlen;
 484                                         break;
 485
 486                                 case RECV_WAIT_DATA:
 487                                         hci_recv_frame(info->rx_skb);
 488                                         info->rx_skb = NULL;
 489                                         break;
 490
 491                                 }
 492
 493                         }
 494
 495                 }
 496
 497
 498         }
 499
 500         info->hdev->stat.byte_rx += len;
 501 }
 502
 503
 504 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 505 {
 506         bluecard_info_t *info = dev_inst;
 507         unsigned int iobase;
 508         unsigned char reg;
 509
 510         if (!info || !info->hdev) {
 511                 BT_ERR("Call of irq %d for unknown device", irq);
 512                 return IRQ_NONE;
 513         }
 514
 515         if (!test_bit(CARD_READY, &(info->hw_state)))
 516                 return IRQ_HANDLED;
 517
 518         iobase = info->link.io.BasePort1;
 519
 520         spin_lock(&(info->lock));
 521
 522         /* Disable interrupt */
 523         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 524         outb(info->ctrl_reg, iobase + REG_CONTROL);
 525
 526         reg = inb(iobase + REG_INTERRUPT);
 527
 528         if ((reg != 0x00) && (reg != 0xff)) {
 529
 530                 if (reg & 0x04) {
 531                         bluecard_receive(info, 0x00);
 532                         outb(0x04, iobase + REG_INTERRUPT);
 533                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 534                 }
 535
 536                 if (reg & 0x08) {
 537                         bluecard_receive(info, 0x10);
 538                         outb(0x08, iobase + REG_INTERRUPT);
 539                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 540                 }
 541
 542                 if (reg & 0x01) {
 543                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 544                         outb(0x01, iobase + REG_INTERRUPT);
 545                         bluecard_write_wakeup(info);
 546                 }
 547
 548                 if (reg & 0x02) {
 549                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 550                         outb(0x02, iobase + REG_INTERRUPT);
 551                         bluecard_write_wakeup(info);
 552                 }
 553
 554         }
 555
 556         /* Enable interrupt */
 557         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 558         outb(info->ctrl_reg, iobase + REG_CONTROL);
 559
 560         spin_unlock(&(info->lock));
 561
 562         return IRQ_HANDLED;
 563 }
 564
 565
 566
 567 /* ======================== Device specific HCI commands ======================== */
 568
 569
 570 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 571 {
 572         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 573         struct sk_buff *skb;
 574
 575         /* Ericsson baud rate command */
 576         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 577
 578         if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 579                 BT_ERR("Can't allocate mem for new packet");
 580                 return -1;
 581         }
 582
 583         switch (baud) {
 584         case 460800:
 585                 cmd[4] = 0x00;
 586                 skb->pkt_type = PKT_BAUD_RATE_460800;
 587                 break;
 588         case 230400:
 589                 cmd[4] = 0x01;
 590                 skb->pkt_type = PKT_BAUD_RATE_230400;
 591                 break;
 592         case 115200:
 593                 cmd[4] = 0x02;
 594                 skb->pkt_type = PKT_BAUD_RATE_115200;
 595                 break;
 596         case 57600:
 597                 /* Fall through... */
 598         default:
 599                 cmd[4] = 0x03;
 600                 skb->pkt_type = PKT_BAUD_RATE_57600;
 601                 break;
 602         }
 603
 604         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 605
 606         skb_queue_tail(&(info->txq), skb);
 607
 608         bluecard_write_wakeup(info);
 609
 610         return 0;
 611 }
 612
 613
 614
 615 /* ======================== HCI interface ======================== */
 616
 617
 618 static int bluecard_hci_flush(struct hci_dev *hdev)
 619 {
 620         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 621
 622         /* Drop TX queue */
 623         skb_queue_purge(&(info->txq));
 624
 625         return 0;
 626 }
 627
 628
 629 static int bluecard_hci_open(struct hci_dev *hdev)
 630 {
 631         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 632         unsigned int iobase = info->link.io.BasePort1;
 633
 634         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 635                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 636
 637         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
 638                 return 0;
 639
 640         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 641                 /* Enable LED */
 642                 outb(0x08 | 0x20, iobase + 0x30);
 643         }
 644
 645         return 0;
 646 }
 647
 648
 649 static int bluecard_hci_close(struct hci_dev *hdev)
 650 {
 651         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 652         unsigned int iobase = info->link.io.BasePort1;
 653
 654         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 655                 return 0;
 656
 657         bluecard_hci_flush(hdev);
 658
 659         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 660                 /* Disable LED */
 661                 outb(0x00, iobase + 0x30);
 662         }
 663
 664         return 0;
 665 }
 666
 667
 668 static int bluecard_hci_send_frame(struct sk_buff *skb)
 669 {
 670         bluecard_info_t *info;
 671         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 672
 673         if (!hdev) {
 674                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 675                 return -ENODEV;
 676         }
 677
 678         info = (bluecard_info_t *)(hdev->driver_data);
 679
 680         switch (skb->pkt_type) {
 681         case HCI_COMMAND_PKT:
 682                 hdev->stat.cmd_tx++;
 683                 break;
 684         case HCI_ACLDATA_PKT:
 685                 hdev->stat.acl_tx++;
 686                 break;
 687         case HCI_SCODATA_PKT:
 688                 hdev->stat.sco_tx++;
 689                 break;
 690         };
 691
 692         /* Prepend skb with frame type */
 693         memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
 694         skb_queue_tail(&(info->txq), skb);
 695
 696         bluecard_write_wakeup(info);
 697
 698         return 0;
 699 }
 700
 701
 702 static void bluecard_hci_destruct(struct hci_dev *hdev)
 703 {
 704 }
 705
 706
 707 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 708 {
 709         return -ENOIOCTLCMD;
 710 }
 711
 712
 713
 714 /* ======================== Card services HCI interaction ======================== */
 715
 716
 717 static int bluecard_open(bluecard_info_t *info)
 718 {
 719         unsigned int iobase = info->link.io.BasePort1;
 720         struct hci_dev *hdev;
 721         unsigned char id;
 722
 723         spin_lock_init(&(info->lock));
 724
 725         init_timer(&(info->timer));
 726         info->timer.function = &bluecard_activity_led_timeout;
 727         info->timer.data = (u_long)info;
 728
 729         skb_queue_head_init(&(info->txq));
 730
 731         info->rx_state = RECV_WAIT_PACKET_TYPE;
 732         info->rx_count = 0;
 733         info->rx_skb = NULL;
 734
 735         /* Initialize HCI device */
 736         hdev = hci_alloc_dev();
 737         if (!hdev) {
 738                 BT_ERR("Can't allocate HCI device");
 739                 return -ENOMEM;
 740         }
 741
 742         info->hdev = hdev;
 743
 744         hdev->type = HCI_PCCARD;
 745         hdev->driver_data = info;
 746
 747         hdev->open     = bluecard_hci_open;
 748         hdev->close    = bluecard_hci_close;
 749         hdev->flush    = bluecard_hci_flush;
 750         hdev->send     = bluecard_hci_send_frame;
 751         hdev->destruct = bluecard_hci_destruct;
 752         hdev->ioctl    = bluecard_hci_ioctl;
 753
 754         hdev->owner = THIS_MODULE;
 755
 756         id = inb(iobase + 0x30);
 757
 758         if ((id & 0x0f) == 0x02)
 759                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 760
 761         if (id & 0x10)
 762                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 763
 764         if (id & 0x20)
 765                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 766
 767         /* Reset card */
 768         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 769         outb(info->ctrl_reg, iobase + REG_CONTROL);
 770
 771         /* Turn FPGA off */
 772         outb(0x80, iobase + 0x30);
 773
 774         /* Wait some time */
 775         msleep(10);
 776
 777         /* Turn FPGA on */
 778         outb(0x00, iobase + 0x30);
 779
 780         /* Activate card */
 781         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 782         outb(info->ctrl_reg, iobase + REG_CONTROL);
 783
 784         /* Enable interrupt */
 785         outb(0xff, iobase + REG_INTERRUPT);
 786         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 787         outb(info->ctrl_reg, iobase + REG_CONTROL);
 788
 789         if ((id & 0x0f) == 0x03) {
 790                 /* Disable RTS */
 791                 info->ctrl_reg |= REG_CONTROL_RTS;
 792                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 793
 794                 /* Set baud rate */
 795                 info->ctrl_reg |= 0x03;
 796                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 797
 798                 /* Enable RTS */
 799                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 800                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 801
 802                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 803                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 804                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 805         }
 806
 807         /* Start the RX buffers */
 808         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 809         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 810
 811         /* Signal that the hardware is ready */
 812         set_bit(CARD_READY, &(info->hw_state));
 813
 814         /* Drop TX queue */
 815         skb_queue_purge(&(info->txq));
 816
 817         /* Control the point at which RTS is enabled */
 818         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 819
 820         /* Timeout before it is safe to send the first HCI packet */
 821         msleep(1250);
 822
 823         /* Register HCI device */
 824         if (hci_register_dev(hdev) < 0) {
 825                 BT_ERR("Can't register HCI device");
 826                 info->hdev = NULL;
 827                 hci_free_dev(hdev);
 828                 return -ENODEV;
 829         }
 830
 831         return 0;
 832 }
 833
 834
 835 static int bluecard_close(bluecard_info_t *info)
 836 {
 837         unsigned int iobase = info->link.io.BasePort1;
 838         struct hci_dev *hdev = info->hdev;
 839
 840         if (!hdev)
 841                 return -ENODEV;
 842
 843         bluecard_hci_close(hdev);
 844
 845         clear_bit(CARD_READY, &(info->hw_state));
 846
 847         /* Reset card */
 848         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 849         outb(info->ctrl_reg, iobase + REG_CONTROL);
 850
 851         /* Turn FPGA off */
 852         outb(0x80, iobase + 0x30);
 853
 854         if (hci_unregister_dev(hdev) < 0)
 855                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 856
 857         hci_free_dev(hdev);
 858
 859         return 0;
 860 }
 861
 862 static dev_link_t *bluecard_attach(void)
 863 {
 864         bluecard_info_t *info;
 865         client_reg_t client_reg;
 866         dev_link_t *link;
 867         int ret;
 868
 869         /* Create new info device */
 870         info = kmalloc(sizeof(*info), GFP_KERNEL);
 871         if (!info)
 872                 return NULL;
 873         memset(info, 0, sizeof(*info));
 874
 875         link = &info->link;
 876         link->priv = info;
 877
 878         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 879         link->io.NumPorts1 = 8;
 880         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 881         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
 882
 883         link->irq.Handler = bluecard_interrupt;
 884         link->irq.Instance = info;
 885
 886         link->conf.Attributes = CONF_ENABLE_IRQ;
 887         link->conf.Vcc = 50;
 888         link->conf.IntType = INT_MEMORY_AND_IO;
 889
 890         /* Register with Card Services */
 891         link->next = dev_list;
 892         dev_list = link;
 893         client_reg.dev_info = &dev_info;
 894         client_reg.EventMask =
 895                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 896                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 897                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 898         client_reg.event_handler = &bluecard_event;
 899         client_reg.Version = 0x0210;
 900         client_reg.event_callback_args.client_data = link;
 901
 902         ret = pcmcia_register_client(&link->handle, &client_reg);
 903         if (ret != CS_SUCCESS) {
 904                 cs_error(link->handle, RegisterClient, ret);
 905                 bluecard_detach(link);
 906                 return NULL;
 907         }
 908
 909         return link;
 910 }
 911
 912
 913 static void bluecard_detach(dev_link_t *link)
 914 {
 915         bluecard_info_t *info = link->priv;
 916         dev_link_t **linkp;
 917         int ret;
 918
 919         /* Locate device structure */
 920         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 921                 if (*linkp == link)
 922                         break;
 923
 924         if (*linkp == NULL)
 925                 return;
 926
 927         if (link->state & DEV_CONFIG)
 928                 bluecard_release(link);
 929
 930         if (link->handle) {
 931                 ret = pcmcia_deregister_client(link->handle);
 932                 if (ret != CS_SUCCESS)
 933                         cs_error(link->handle, DeregisterClient, ret);
 934         }
 935
 936         /* Unlink device structure, free bits */
 937         *linkp = link->next;
 938
 939         kfree(info);
 940 }
 941
 942
 943 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 944 {
 945         int i;
 946
 947         i = pcmcia_get_first_tuple(handle, tuple);
 948         if (i != CS_SUCCESS)
 949                 return CS_NO_MORE_ITEMS;
 950
 951         i = pcmcia_get_tuple_data(handle, tuple);
 952         if (i != CS_SUCCESS)
 953                 return i;
 954
 955         return pcmcia_parse_tuple(handle, tuple, parse);
 956 }
 957
 958 static void bluecard_config(dev_link_t *link)
 959 {
 960         client_handle_t handle = link->handle;
 961         bluecard_info_t *info = link->priv;
 962         tuple_t tuple;
 963         u_short buf[256];
 964         cisparse_t parse;
 965         config_info_t config;
 966         int i, n, last_ret, last_fn;
 967
 968         tuple.TupleData = (cisdata_t *)buf;
 969         tuple.TupleOffset = 0;
 970         tuple.TupleDataMax = 255;
 971         tuple.Attributes = 0;
 972
 973         /* Get configuration register information */
 974         tuple.DesiredTuple = CISTPL_CONFIG;
 975         last_ret = first_tuple(handle, &tuple, &parse);
 976         if (last_ret != CS_SUCCESS) {
 977                 last_fn = ParseTuple;
 978                 goto cs_failed;
 979         }
 980         link->conf.ConfigBase = parse.config.base;
 981         link->conf.Present = parse.config.rmask[0];
 982
 983         /* Configure card */
 984         link->state |= DEV_CONFIG;
 985         i = pcmcia_get_configuration_info(handle, &config);
 986         link->conf.Vcc = config.Vcc;
 987
 988         link->conf.ConfigIndex = 0x20;
 989         link->io.NumPorts1 = 64;
 990         link->io.IOAddrLines = 6;
 991
 992         for (n = 0; n < 0x400; n += 0x40) {
 993                 link->io.BasePort1 = n ^ 0x300;
 994                 i = pcmcia_request_io(link->handle, &link->io);
 995                 if (i == CS_SUCCESS)
 996                         break;
 997         }
 998
 999         if (i != CS_SUCCESS) {
1000                 cs_error(link->handle, RequestIO, i);
1001                 goto failed;
1002         }
1003
1004         i = pcmcia_request_irq(link->handle, &link->irq);
1005         if (i != CS_SUCCESS) {
1006                 cs_error(link->handle, RequestIRQ, i);
1007                 link->irq.AssignedIRQ = 0;
1008         }
1009
1010         i = pcmcia_request_configuration(link->handle, &link->conf);
1011         if (i != CS_SUCCESS) {
1012                 cs_error(link->handle, RequestConfiguration, i);
1013                 goto failed;
1014         }
1015
1016         if (bluecard_open(info) != 0)
1017                 goto failed;
1018
1019         strcpy(info->node.dev_name, info->hdev->name);
1020         link->dev = &info->node;
1021         link->state &= ~DEV_CONFIG_PENDING;
1022
1023         return;
1024
1025 cs_failed:
1026         cs_error(link->handle, last_fn, last_ret);
1027
1028 failed:
1029         bluecard_release(link);
1030 }
1031
1032
1033 static void bluecard_release(dev_link_t *link)
1034 {
1035         bluecard_info_t *info = link->priv;
1036
1037         if (link->state & DEV_PRESENT)
1038                 bluecard_close(info);
1039
1040         del_timer(&(info->timer));
1041
1042         link->dev = NULL;
1043
1044         pcmcia_release_configuration(link->handle);
1045         pcmcia_release_io(link->handle, &link->io);
1046         pcmcia_release_irq(link->handle, &link->irq);
1047
1048         link->state &= ~DEV_CONFIG;
1049 }
1050
1051
1052 static int bluecard_event(event_t event, int priority, event_callback_args_t *args)
1053 {
1054         dev_link_t *link = args->client_data;
1055         bluecard_info_t *info = link->priv;
1056
1057         switch (event) {
1058         case CS_EVENT_CARD_REMOVAL:
1059                 link->state &= ~DEV_PRESENT;
1060                 if (link->state & DEV_CONFIG) {
1061                         bluecard_close(info);
1062                         bluecard_release(link);
1063                 }
1064                 break;
1065         case CS_EVENT_CARD_INSERTION:
1066                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
1067                 bluecard_config(link);
1068                 break;
1069         case CS_EVENT_PM_SUSPEND:
1070                 link->state |= DEV_SUSPEND;
1071                 /* Fall through... */
1072         case CS_EVENT_RESET_PHYSICAL:
1073                 if (link->state & DEV_CONFIG)
1074                         pcmcia_release_configuration(link->handle);
1075                 break;
1076         case CS_EVENT_PM_RESUME:
1077                 link->state &= ~DEV_SUSPEND;
1078                 /* Fall through... */
1079         case CS_EVENT_CARD_RESET:
1080                 if (DEV_OK(link))
1081                         pcmcia_request_configuration(link->handle, &link->conf);
1082                 break;
1083         }
1084
1085         return 0;
1086 }
1087
1088 static struct pcmcia_driver bluecard_driver = {
1089         .owner          = THIS_MODULE,
1090         .drv            = {
1091                 .name   = "bluecard_cs",
1092         },
1093         .attach         = bluecard_attach,
1094         .detach         = bluecard_detach,
1095 };
1096
1097 static int __init init_bluecard_cs(void)
1098 {
1099         return pcmcia_register_driver(&bluecard_driver);
1100 }
1101
1102
1103 static void __exit exit_bluecard_cs(void)
1104 {
1105         pcmcia_unregister_driver(&bluecard_driver);
1106         BUG_ON(dev_list != NULL);
1107 }
1108
1109 module_init(init_bluecard_cs);
1110 module_exit(exit_bluecard_cs);