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/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/skbuff.h>
  37 #include <asm/io.h>
  38
  39 #include <pcmcia/version.h>
  40 #include <pcmcia/cs_types.h>
  41 #include <pcmcia/cs.h>
  42 #include <pcmcia/cistpl.h>
  43 #include <pcmcia/ciscode.h>
  44 #include <pcmcia/ds.h>
  45 #include <pcmcia/cisreg.h>
  46
  47 #include <net/bluetooth/bluetooth.h>
  48 #include <net/bluetooth/hci_core.h>
  49
  50
  51
  52 /* ======================== Module parameters ======================== */
  53
  54
  55 /* Bit map of interrupts to choose from */
  56 static u_int irq_mask = 0x86bc;
  57 static int irq_list[4] = { -1 };
  58
  59 MODULE_PARM(irq_mask, "i");
  60 MODULE_PARM(irq_list, "1-4i");
  61
  62 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  63 MODULE_DESCRIPTION("BlueZ driver for the Anycom BlueCard (LSE039/LSE041)");
  64 MODULE_LICENSE("GPL");
  65
  66
  67
  68 /* ======================== Local structures ======================== */
  69
  70
  71 typedef struct bluecard_info_t {
  72         dev_link_t link;
  73         dev_node_t node;
  74
  75         struct hci_dev hdev;
  76
  77         spinlock_t lock;                /* For serializing operations */
  78         struct timer_list timer;        /* For LED control */
  79
  80         struct sk_buff_head txq;
  81         unsigned long tx_state;
  82
  83         unsigned long rx_state;
  84         unsigned long rx_count;
  85         struct sk_buff *rx_skb;
  86
  87         unsigned char ctrl_reg;
  88         unsigned long hw_state;         /* Status of the hardware and LED control */
  89 } bluecard_info_t;
  90
  91
  92 void bluecard_config(dev_link_t *link);
  93 void bluecard_release(u_long arg);
  94 int bluecard_event(event_t event, int priority, event_callback_args_t *args);
  95
  96 static dev_info_t dev_info = "bluecard_cs";
  97
  98 dev_link_t *bluecard_attach(void);
  99 void bluecard_detach(dev_link_t *);
 100
 101 static dev_link_t *dev_list = NULL;
 102
 103
 104 /* Default baud rate: 57600, 115200, 230400 or 460800 */
 105 #define DEFAULT_BAUD_RATE  230400
 106
 107
 108 /* Hardware states */
 109 #define CARD_READY             1
 110 #define CARD_HAS_PCCARD_ID     4
 111 #define CARD_HAS_POWER_LED     5
 112 #define CARD_HAS_ACTIVITY_LED  6
 113
 114 /* Transmit states  */
 115 #define XMIT_SENDING         1
 116 #define XMIT_WAKEUP          2
 117 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 118 #define XMIT_BUF_ONE_READY   6
 119 #define XMIT_BUF_TWO_READY   7
 120 #define XMIT_SENDING_READY   8
 121
 122 /* Receiver states */
 123 #define RECV_WAIT_PACKET_TYPE   0
 124 #define RECV_WAIT_EVENT_HEADER  1
 125 #define RECV_WAIT_ACL_HEADER    2
 126 #define RECV_WAIT_SCO_HEADER    3
 127 #define RECV_WAIT_DATA          4
 128
 129 /* Special packet types */
 130 #define PKT_BAUD_RATE_57600   0x80
 131 #define PKT_BAUD_RATE_115200  0x81
 132 #define PKT_BAUD_RATE_230400  0x82
 133 #define PKT_BAUD_RATE_460800  0x83
 134
 135
 136 /* These are the register offsets */
 137 #define REG_COMMAND     0x20
 138 #define REG_INTERRUPT   0x21
 139 #define REG_CONTROL     0x22
 140 #define REG_RX_CONTROL  0x24
 141 #define REG_CARD_RESET  0x30
 142 #define REG_LED_CTRL    0x30
 143
 144 /* REG_COMMAND */
 145 #define REG_COMMAND_TX_BUF_ONE  0x01
 146 #define REG_COMMAND_TX_BUF_TWO  0x02
 147 #define REG_COMMAND_RX_BUF_ONE  0x04
 148 #define REG_COMMAND_RX_BUF_TWO  0x08
 149 #define REG_COMMAND_RX_WIN_ONE  0x00
 150 #define REG_COMMAND_RX_WIN_TWO  0x10
 151
 152 /* REG_CONTROL */
 153 #define REG_CONTROL_BAUD_RATE_57600   0x00
 154 #define REG_CONTROL_BAUD_RATE_115200  0x01
 155 #define REG_CONTROL_BAUD_RATE_230400  0x02
 156 #define REG_CONTROL_BAUD_RATE_460800  0x03
 157 #define REG_CONTROL_RTS               0x04
 158 #define REG_CONTROL_BT_ON             0x08
 159 #define REG_CONTROL_BT_RESET          0x10
 160 #define REG_CONTROL_BT_RES_PU         0x20
 161 #define REG_CONTROL_INTERRUPT         0x40
 162 #define REG_CONTROL_CARD_RESET        0x80
 163
 164 /* REG_RX_CONTROL */
 165 #define RTS_LEVEL_SHIFT_BITS  0x02
 166
 167
 168
 169 /* ======================== LED handling routines ======================== */
 170
 171
 172 void bluecard_activity_led_timeout(u_long arg)
 173 {
 174         bluecard_info_t *info = (bluecard_info_t *)arg;
 175         unsigned int iobase = info->link.io.BasePort1;
 176
 177         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 178                 /* Disable activity LED */
 179                 outb(0x08 | 0x20, iobase + 0x30);
 180         } else {
 181                 /* Disable power LED */
 182                 outb(0x00, iobase + 0x30);
 183         }
 184 }
 185
 186
 187 static void bluecard_enable_activity_led(bluecard_info_t *info)
 188 {
 189         unsigned int iobase = info->link.io.BasePort1;
 190
 191         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 192                 /* Enable activity LED */
 193                 outb(0x10 | 0x40, iobase + 0x30);
 194
 195                 /* Stop the LED after HZ/4 */
 196                 mod_timer(&(info->timer), jiffies + HZ / 4);
 197         } else {
 198                 /* Enable power LED */
 199                 outb(0x08 | 0x20, iobase + 0x30);
 200
 201                 /* Stop the LED after HZ/2 */
 202                 mod_timer(&(info->timer), jiffies + HZ / 2);
 203         }
 204 }
 205
 206
 207
 208 /* ======================== Interrupt handling ======================== */
 209
 210
 211 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 212 {
 213         int i, actual;
 214
 215         actual = (len > 15) ? 15 : len;
 216
 217         outb_p(actual, iobase + offset);
 218
 219         for (i = 0; i < actual; i++)
 220                 outb_p(buf[i], iobase + offset + i + 1);
 221
 222         return actual;
 223 }
 224
 225
 226 static void bluecard_write_wakeup(bluecard_info_t *info)
 227 {
 228         if (!info) {
 229                 printk(KERN_WARNING "bluecard_cs: Call of write_wakeup for unknown device.\n");
 230                 return;
 231         }
 232
 233         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 234                 return;
 235
 236         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 237                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 238                 return;
 239         }
 240
 241         do {
 242                 register unsigned int iobase = info->link.io.BasePort1;
 243                 register unsigned int offset;
 244                 register unsigned char command;
 245                 register unsigned long ready_bit;
 246                 register struct sk_buff *skb;
 247                 register int len;
 248
 249                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 250
 251                 if (!(info->link.state & DEV_PRESENT))
 252                         return;
 253
 254                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 255                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 256                                 break;
 257                         offset = 0x10;
 258                         command = REG_COMMAND_TX_BUF_TWO;
 259                         ready_bit = XMIT_BUF_TWO_READY;
 260                 } else {
 261                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 262                                 break;
 263                         offset = 0x00;
 264                         command = REG_COMMAND_TX_BUF_ONE;
 265                         ready_bit = XMIT_BUF_ONE_READY;
 266                 }
 267
 268                 if (!(skb = skb_dequeue(&(info->txq))))
 269                         break;
 270
 271                 if (skb->pkt_type & 0x80) {
 272                         /* Disable RTS */
 273                         info->ctrl_reg |= REG_CONTROL_RTS;
 274                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 275                 }
 276
 277                 /* Activate LED */
 278                 bluecard_enable_activity_led(info);
 279
 280                 /* Send frame */
 281                 len = bluecard_write(iobase, offset, skb->data, skb->len);
 282
 283                 /* Tell the FPGA to send the data */
 284                 outb_p(command, iobase + REG_COMMAND);
 285
 286                 /* Mark the buffer as dirty */
 287                 clear_bit(ready_bit, &(info->tx_state));
 288
 289                 if (skb->pkt_type & 0x80) {
 290
 291                         wait_queue_head_t wait;
 292                         unsigned char baud_reg;
 293
 294                         switch (skb->pkt_type) {
 295                         case PKT_BAUD_RATE_460800:
 296                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 297                                 break;
 298                         case PKT_BAUD_RATE_230400:
 299                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 300                                 break;
 301                         case PKT_BAUD_RATE_115200:
 302                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 303                                 break;
 304                         case PKT_BAUD_RATE_57600:
 305                                 /* Fall through... */
 306                         default:
 307                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 308                                 break;
 309                         }
 310
 311                         /* Wait until the command reaches the baseband */
 312                         init_waitqueue_head(&wait);
 313                         interruptible_sleep_on_timeout(&wait, HZ / 10);
 314
 315                         /* Set baud on baseband */
 316                         info->ctrl_reg &= ~0x03;
 317                         info->ctrl_reg |= baud_reg;
 318                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 319
 320                         /* Enable RTS */
 321                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 322                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 323
 324                         /* Wait before the next HCI packet can be send */
 325                         interruptible_sleep_on_timeout(&wait, HZ);
 326
 327                 }
 328
 329                 if (len == skb->len) {
 330                         kfree_skb(skb);
 331                 } else {
 332                         skb_pull(skb, len);
 333                         skb_queue_head(&(info->txq), skb);
 334                 }
 335
 336                 info->hdev.stat.byte_tx += len;
 337
 338                 /* Change buffer */
 339                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 340
 341         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 342
 343         clear_bit(XMIT_SENDING, &(info->tx_state));
 344 }
 345
 346
 347 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 348 {
 349         int i, n, len;
 350
 351         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 352
 353         len = inb(iobase + offset);
 354         n = 0;
 355         i = 1;
 356
 357         while (n < len) {
 358
 359                 if (i == 16) {
 360                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 361                         i = 0;
 362                 }
 363
 364                 buf[n] = inb(iobase + offset + i);
 365
 366                 n++;
 367                 i++;
 368
 369         }
 370
 371         return len;
 372 }
 373
 374
 375 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 376 {
 377         unsigned int iobase;
 378         unsigned char buf[31];
 379         int i, len;
 380
 381         if (!info) {
 382                 printk(KERN_WARNING "bluecard_cs: Call of receive for unknown device.\n");
 383                 return;
 384         }
 385
 386         iobase = info->link.io.BasePort1;
 387
 388         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 389                 bluecard_enable_activity_led(info);
 390
 391         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 392
 393         for (i = 0; i < len; i++) {
 394
 395                 /* Allocate packet */
 396                 if (info->rx_skb == NULL) {
 397                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 398                         info->rx_count = 0;
 399                         if (!(info->rx_skb = bluez_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 400                                 printk(KERN_WARNING "bluecard_cs: Can't allocate mem for new packet.\n");
 401                                 return;
 402                         }
 403                 }
 404
 405                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 406
 407                         info->rx_skb->dev = (void *)&(info->hdev);
 408                         info->rx_skb->pkt_type = buf[i];
 409
 410                         switch (info->rx_skb->pkt_type) {
 411
 412                         case 0x00:
 413                                 /* init packet */
 414                                 if (offset != 0x00) {
 415                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 416                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 417                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 418                                         bluecard_write_wakeup(info);
 419                                 }
 420
 421                                 kfree_skb(info->rx_skb);
 422                                 info->rx_skb = NULL;
 423                                 break;
 424
 425                         case HCI_EVENT_PKT:
 426                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 427                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 428                                 break;
 429
 430                         case HCI_ACLDATA_PKT:
 431                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 432                                 info->rx_count = HCI_ACL_HDR_SIZE;
 433                                 break;
 434
 435                         case HCI_SCODATA_PKT:
 436                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 437                                 info->rx_count = HCI_SCO_HDR_SIZE;
 438                                 break;
 439
 440                         default:
 441                                 /* unknown packet */
 442                                 printk(KERN_WARNING "bluecard_cs: Unknown HCI packet with type 0x%02x received.\n", info->rx_skb->pkt_type);
 443                                 info->hdev.stat.err_rx++;
 444
 445                                 kfree_skb(info->rx_skb);
 446                                 info->rx_skb = NULL;
 447                                 break;
 448
 449                         }
 450
 451                 } else {
 452
 453                         *skb_put(info->rx_skb, 1) = buf[i];
 454                         info->rx_count--;
 455
 456                         if (info->rx_count == 0) {
 457
 458                                 int dlen;
 459                                 hci_event_hdr *eh;
 460                                 hci_acl_hdr *ah;
 461                                 hci_sco_hdr *sh;
 462
 463                                 switch (info->rx_state) {
 464
 465                                 case RECV_WAIT_EVENT_HEADER:
 466                                         eh = (hci_event_hdr *)(info->rx_skb->data);
 467                                         info->rx_state = RECV_WAIT_DATA;
 468                                         info->rx_count = eh->plen;
 469                                         break;
 470
 471                                 case RECV_WAIT_ACL_HEADER:
 472                                         ah = (hci_acl_hdr *)(info->rx_skb->data);
 473                                         dlen = __le16_to_cpu(ah->dlen);
 474                                         info->rx_state = RECV_WAIT_DATA;
 475                                         info->rx_count = dlen;
 476                                         break;
 477
 478                                 case RECV_WAIT_SCO_HEADER:
 479                                         sh = (hci_sco_hdr *)(info->rx_skb->data);
 480                                         info->rx_state = RECV_WAIT_DATA;
 481                                         info->rx_count = sh->dlen;
 482                                         break;
 483
 484                                 case RECV_WAIT_DATA:
 485                                         hci_recv_frame(info->rx_skb);
 486                                         info->rx_skb = NULL;
 487                                         break;
 488
 489                                 }
 490
 491                         }
 492
 493                 }
 494
 495
 496         }
 497
 498         info->hdev.stat.byte_rx += len;
 499 }
 500
 501
 502 void bluecard_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 503 {
 504         bluecard_info_t *info = dev_inst;
 505         unsigned int iobase;
 506         unsigned char reg;
 507
 508         if (!info) {
 509                 printk(KERN_WARNING "bluecard_cs: Call of irq %d for unknown device.\n", irq);
 510                 return;
 511         }
 512
 513         if (!test_bit(CARD_READY, &(info->hw_state)))
 514                 return;
 515
 516         iobase = info->link.io.BasePort1;
 517
 518         spin_lock(&(info->lock));
 519
 520         /* Disable interrupt */
 521         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 522         outb(info->ctrl_reg, iobase + REG_CONTROL);
 523
 524         reg = inb(iobase + REG_INTERRUPT);
 525
 526         if ((reg != 0x00) && (reg != 0xff)) {
 527
 528                 if (reg & 0x04) {
 529                         bluecard_receive(info, 0x00);
 530                         outb(0x04, iobase + REG_INTERRUPT);
 531                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 532                 }
 533
 534                 if (reg & 0x08) {
 535                         bluecard_receive(info, 0x10);
 536                         outb(0x08, iobase + REG_INTERRUPT);
 537                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 538                 }
 539
 540                 if (reg & 0x01) {
 541                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 542                         outb(0x01, iobase + REG_INTERRUPT);
 543                         bluecard_write_wakeup(info);
 544                 }
 545
 546                 if (reg & 0x02) {
 547                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 548                         outb(0x02, iobase + REG_INTERRUPT);
 549                         bluecard_write_wakeup(info);
 550                 }
 551
 552         }
 553
 554         /* Enable interrupt */
 555         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 556         outb(info->ctrl_reg, iobase + REG_CONTROL);
 557
 558         spin_unlock(&(info->lock));
 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 = bluez_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 575                 printk(KERN_WARNING "bluecard_cs: Can't allocate mem for new packet.\n");
 576                 return -1;
 577         }
 578
 579         switch (baud) {
 580         case 460800:
 581                 cmd[4] = 0x00;
 582                 skb->pkt_type = PKT_BAUD_RATE_460800;
 583                 break;
 584         case 230400:
 585                 cmd[4] = 0x01;
 586                 skb->pkt_type = PKT_BAUD_RATE_230400;
 587                 break;
 588         case 115200:
 589                 cmd[4] = 0x02;
 590                 skb->pkt_type = PKT_BAUD_RATE_115200;
 591                 break;
 592         case 57600:
 593                 /* Fall through... */
 594         default:
 595                 cmd[4] = 0x03;
 596                 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->link.io.BasePort1;
 629
 630         bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 631
 632         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
 633                 return 0;
 634
 635         /* Enable LED */
 636         outb(0x08 | 0x20, iobase + 0x30);
 637
 638         return 0;
 639 }
 640
 641
 642 static int bluecard_hci_close(struct hci_dev *hdev)
 643 {
 644         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 645         unsigned int iobase = info->link.io.BasePort1;
 646
 647         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 648                 return 0;
 649
 650         bluecard_hci_flush(hdev);
 651
 652         /* Disable LED */
 653         outb(0x00, iobase + 0x30);
 654
 655         return 0;
 656 }
 657
 658
 659 static int bluecard_hci_send_frame(struct sk_buff *skb)
 660 {
 661         bluecard_info_t *info;
 662         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 663
 664         if (!hdev) {
 665                 printk(KERN_WARNING "bluecard_cs: Frame for unknown HCI device (hdev=NULL).");
 666                 return -ENODEV;
 667         }
 668
 669         info = (bluecard_info_t *)(hdev->driver_data);
 670
 671         switch (skb->pkt_type) {
 672         case HCI_COMMAND_PKT:
 673                 hdev->stat.cmd_tx++;
 674                 break;
 675         case HCI_ACLDATA_PKT:
 676                 hdev->stat.acl_tx++;
 677                 break;
 678         case HCI_SCODATA_PKT:
 679                 hdev->stat.sco_tx++;
 680                 break;
 681         };
 682
 683         /* Prepend skb with frame type */
 684         memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
 685         skb_queue_tail(&(info->txq), skb);
 686
 687         bluecard_write_wakeup(info);
 688
 689         return 0;
 690 }
 691
 692
 693 static void bluecard_hci_destruct(struct hci_dev *hdev)
 694 {
 695 }
 696
 697
 698 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 699 {
 700         return -ENOIOCTLCMD;
 701 }
 702
 703
 704
 705 /* ======================== Card services HCI interaction ======================== */
 706
 707
 708 int bluecard_open(bluecard_info_t *info)
 709 {
 710         unsigned int iobase = info->link.io.BasePort1;
 711         struct hci_dev *hdev;
 712         unsigned char id;
 713
 714         spin_lock_init(&(info->lock));
 715
 716         init_timer(&(info->timer));
 717         info->timer.function = &bluecard_activity_led_timeout;
 718         info->timer.data = (u_long)info;
 719
 720         skb_queue_head_init(&(info->txq));
 721
 722         info->rx_state = RECV_WAIT_PACKET_TYPE;
 723         info->rx_count = 0;
 724         info->rx_skb = NULL;
 725
 726         id = inb(iobase + 0x30);
 727
 728         if ((id & 0x0f) == 0x02)
 729                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 730
 731         if (id & 0x10)
 732                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 733
 734         if (id & 0x20)
 735                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 736
 737         /* Reset card */
 738         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 739         outb(info->ctrl_reg, iobase + REG_CONTROL);
 740
 741         /* Turn FPGA off */
 742         outb(0x80, iobase + 0x30);
 743
 744         /* Wait some time */
 745         set_current_state(TASK_INTERRUPTIBLE);
 746         schedule_timeout(HZ / 100);
 747
 748         /* Turn FPGA on */
 749         outb(0x00, iobase + 0x30);
 750
 751         /* Activate card */
 752         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 753         outb(info->ctrl_reg, iobase + REG_CONTROL);
 754
 755         /* Enable interrupt */
 756         outb(0xff, iobase + REG_INTERRUPT);
 757         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 758         outb(info->ctrl_reg, iobase + REG_CONTROL);
 759
 760         /* Start the RX buffers */
 761         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 762         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 763
 764         /* Signal that the hardware is ready */
 765         set_bit(CARD_READY, &(info->hw_state));
 766
 767         /* Drop TX queue */
 768         skb_queue_purge(&(info->txq));
 769
 770         /* Control the point at which RTS is enabled */
 771         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 772
 773         /* Timeout before it is safe to send the first HCI packet */
 774         set_current_state(TASK_INTERRUPTIBLE);
 775         schedule_timeout((HZ * 5) / 4);         // or set it to 3/2
 776
 777
 778         /* Initialize and register HCI device */
 779
 780         hdev = &(info->hdev);
 781
 782         hdev->type = HCI_PCCARD;
 783         hdev->driver_data = info;
 784
 785         hdev->open = bluecard_hci_open;
 786         hdev->close = bluecard_hci_close;
 787         hdev->flush = bluecard_hci_flush;
 788         hdev->send = bluecard_hci_send_frame;
 789         hdev->destruct = bluecard_hci_destruct;
 790         hdev->ioctl = bluecard_hci_ioctl;
 791
 792         if (hci_register_dev(hdev) < 0) {
 793                 printk(KERN_WARNING "bluecard_cs: Can't register HCI device %s.\n", hdev->name);
 794                 return -ENODEV;
 795         }
 796
 797         return 0;
 798 }
 799
 800
 801 int bluecard_close(bluecard_info_t *info)
 802 {
 803         unsigned int iobase = info->link.io.BasePort1;
 804         struct hci_dev *hdev = &(info->hdev);
 805
 806         bluecard_hci_close(hdev);
 807
 808         clear_bit(CARD_READY, &(info->hw_state));
 809
 810         /* Reset card */
 811         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 812         outb(info->ctrl_reg, iobase + REG_CONTROL);
 813
 814         /* Turn FPGA off */
 815         outb(0x80, iobase + 0x30);
 816
 817         if (hci_unregister_dev(hdev) < 0)
 818                 printk(KERN_WARNING "bluecard_cs: Can't unregister HCI device %s.\n", hdev->name);
 819
 820         return 0;
 821 }
 822
 823
 824
 825 /* ======================== Card services ======================== */
 826
 827
 828 static void cs_error(client_handle_t handle, int func, int ret)
 829 {
 830         error_info_t err = { func, ret };
 831
 832         CardServices(ReportError, handle, &err);
 833 }
 834
 835
 836 dev_link_t *bluecard_attach(void)
 837 {
 838         bluecard_info_t *info;
 839         client_reg_t client_reg;
 840         dev_link_t *link;
 841         int i, ret;
 842
 843         /* Create new info device */
 844         info = kmalloc(sizeof(*info), GFP_KERNEL);
 845         if (!info)
 846                 return NULL;
 847         memset(info, 0, sizeof(*info));
 848
 849         link = &info->link;
 850         link->priv = info;
 851
 852         link->release.function = &bluecard_release;
 853         link->release.data = (u_long)link;
 854         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 855         link->io.NumPorts1 = 8;
 856         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 857         link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 858
 859         if (irq_list[0] == -1)
 860                 link->irq.IRQInfo2 = irq_mask;
 861         else
 862                 for (i = 0; i < 4; i++)
 863                         link->irq.IRQInfo2 |= 1 << irq_list[i];
 864
 865         link->irq.Handler = bluecard_interrupt;
 866         link->irq.Instance = info;
 867
 868         link->conf.Attributes = CONF_ENABLE_IRQ;
 869         link->conf.Vcc = 50;
 870         link->conf.IntType = INT_MEMORY_AND_IO;
 871
 872         /* Register with Card Services */
 873         link->next = dev_list;
 874         dev_list = link;
 875         client_reg.dev_info = &dev_info;
 876         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 877         client_reg.EventMask =
 878                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 879                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 880                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 881         client_reg.event_handler = &bluecard_event;
 882         client_reg.Version = 0x0210;
 883         client_reg.event_callback_args.client_data = link;
 884
 885         ret = CardServices(RegisterClient, &link->handle, &client_reg);
 886         if (ret != CS_SUCCESS) {
 887                 cs_error(link->handle, RegisterClient, ret);
 888                 bluecard_detach(link);
 889                 return NULL;
 890         }
 891
 892         return link;
 893 }
 894
 895
 896 void bluecard_detach(dev_link_t *link)
 897 {
 898         bluecard_info_t *info = link->priv;
 899         dev_link_t **linkp;
 900         int ret;
 901
 902         /* Locate device structure */
 903         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 904                 if (*linkp == link)
 905                         break;
 906
 907         if (*linkp == NULL)
 908                 return;
 909
 910         del_timer(&link->release);
 911         if (link->state & DEV_CONFIG)
 912                 bluecard_release((u_long)link);
 913
 914         if (link->handle) {
 915                 ret = CardServices(DeregisterClient, link->handle);
 916                 if (ret != CS_SUCCESS)
 917                         cs_error(link->handle, DeregisterClient, ret);
 918         }
 919
 920         /* Unlink device structure, free bits */
 921         *linkp = link->next;
 922
 923         kfree(info);
 924 }
 925
 926
 927 static int get_tuple(int fn, client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 928 {
 929         int i;
 930
 931         i = CardServices(fn, handle, tuple);
 932         if (i != CS_SUCCESS)
 933                 return CS_NO_MORE_ITEMS;
 934
 935         i = CardServices(GetTupleData, handle, tuple);
 936         if (i != CS_SUCCESS)
 937                 return i;
 938
 939         return CardServices(ParseTuple, handle, tuple, parse);
 940 }
 941
 942
 943 #define first_tuple(a, b, c) get_tuple(GetFirstTuple, a, b, c)
 944 #define next_tuple(a, b, c) get_tuple(GetNextTuple, a, b, c)
 945
 946 void bluecard_config(dev_link_t *link)
 947 {
 948         client_handle_t handle = link->handle;
 949         bluecard_info_t *info = link->priv;
 950         tuple_t tuple;
 951         u_short buf[256];
 952         cisparse_t parse;
 953         config_info_t config;
 954         int i, n, last_ret, last_fn;
 955
 956         tuple.TupleData = (cisdata_t *)buf;
 957         tuple.TupleOffset = 0;
 958         tuple.TupleDataMax = 255;
 959         tuple.Attributes = 0;
 960
 961         /* Get configuration register information */
 962         tuple.DesiredTuple = CISTPL_CONFIG;
 963         last_ret = first_tuple(handle, &tuple, &parse);
 964         if (last_ret != CS_SUCCESS) {
 965                 last_fn = ParseTuple;
 966                 goto cs_failed;
 967         }
 968         link->conf.ConfigBase = parse.config.base;
 969         link->conf.Present = parse.config.rmask[0];
 970
 971         /* Configure card */
 972         link->state |= DEV_CONFIG;
 973         i = CardServices(GetConfigurationInfo, handle, &config);
 974         link->conf.Vcc = config.Vcc;
 975
 976         link->conf.ConfigIndex = 0x20;
 977         link->io.NumPorts1 = 64;
 978         link->io.IOAddrLines = 6;
 979
 980         for (n = 0; n < 0x400; n += 0x40) {
 981                 link->io.BasePort1 = n ^ 0x300;
 982                 i = CardServices(RequestIO, link->handle, &link->io);
 983                 if (i == CS_SUCCESS)
 984                         break;
 985         }
 986
 987         if (i != CS_SUCCESS) {
 988                 cs_error(link->handle, RequestIO, i);
 989                 goto failed;
 990         }
 991
 992         i = CardServices(RequestIRQ, link->handle, &link->irq);
 993         if (i != CS_SUCCESS) {
 994                 cs_error(link->handle, RequestIRQ, i);
 995                 link->irq.AssignedIRQ = 0;
 996         }
 997
 998         i = CardServices(RequestConfiguration, link->handle, &link->conf);
 999         if (i != CS_SUCCESS) {
1000                 cs_error(link->handle, RequestConfiguration, i);
1001                 goto failed;
1002         }
1003
1004         MOD_INC_USE_COUNT;
1005
1006         if (bluecard_open(info) != 0)
1007                 goto failed;
1008
1009         strcpy(info->node.dev_name, info->hdev.name);
1010         link->dev = &info->node;
1011         link->state &= ~DEV_CONFIG_PENDING;
1012
1013         return;
1014
1015 cs_failed:
1016         cs_error(link->handle, last_fn, last_ret);
1017
1018 failed:
1019         bluecard_release((u_long)link);
1020 }
1021
1022
1023 void bluecard_release(u_long arg)
1024 {
1025         dev_link_t *link = (dev_link_t *)arg;
1026         bluecard_info_t *info = link->priv;
1027
1028         if (link->state & DEV_PRESENT)
1029                 bluecard_close(info);
1030
1031         MOD_DEC_USE_COUNT;
1032
1033         link->dev = NULL;
1034
1035         CardServices(ReleaseConfiguration, link->handle);
1036         CardServices(ReleaseIO, link->handle, &link->io);
1037         CardServices(ReleaseIRQ, link->handle, &link->irq);
1038
1039         link->state &= ~DEV_CONFIG;
1040 }
1041
1042
1043 int bluecard_event(event_t event, int priority, event_callback_args_t *args)
1044 {
1045         dev_link_t *link = args->client_data;
1046         bluecard_info_t *info = link->priv;
1047
1048         switch (event) {
1049         case CS_EVENT_CARD_REMOVAL:
1050                 link->state &= ~DEV_PRESENT;
1051                 if (link->state & DEV_CONFIG) {
1052                         bluecard_close(info);
1053                         mod_timer(&link->release, jiffies + HZ / 20);
1054                 }
1055                 break;
1056         case CS_EVENT_CARD_INSERTION:
1057                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
1058                 bluecard_config(link);
1059                 break;
1060         case CS_EVENT_PM_SUSPEND:
1061                 link->state |= DEV_SUSPEND;
1062                 /* Fall through... */
1063         case CS_EVENT_RESET_PHYSICAL:
1064                 if (link->state & DEV_CONFIG)
1065                         CardServices(ReleaseConfiguration, link->handle);
1066                 break;
1067         case CS_EVENT_PM_RESUME:
1068                 link->state &= ~DEV_SUSPEND;
1069                 /* Fall through... */
1070         case CS_EVENT_CARD_RESET:
1071                 if (DEV_OK(link))
1072                         CardServices(RequestConfiguration, link->handle, &link->conf);
1073                 break;
1074         }
1075
1076         return 0;
1077 }
1078
1079
1080
1081 /* ======================== Module initialization ======================== */
1082
1083
1084 int __init init_bluecard_cs(void)
1085 {
1086         servinfo_t serv;
1087         int err;
1088
1089         CardServices(GetCardServicesInfo, &serv);
1090         if (serv.Revision != CS_RELEASE_CODE) {
1091                 printk(KERN_NOTICE "bluecard_cs: Card Services release does not match!\n");
1092                 return -1;
1093         }
1094
1095         err = register_pccard_driver(&dev_info, &bluecard_attach, &bluecard_detach);
1096
1097         return err;
1098 }
1099
1100
1101 void __exit exit_bluecard_cs(void)
1102 {
1103         unregister_pccard_driver(&dev_info);
1104
1105         while (dev_list != NULL)
1106                 bluecard_detach(dev_list);
1107 }
1108
1109
1110 module_init(init_bluecard_cs);
1111 module_exit(exit_bluecard_cs);
1112
1113 EXPORT_NO_SYMBOLS;