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/skbuff.h>
  38 #include <asm/io.h>
  39
  40 #include <pcmcia/version.h>
  41 #include <pcmcia/cs_types.h>
  42 #include <pcmcia/cs.h>
  43 #include <pcmcia/cistpl.h>
  44 #include <pcmcia/ciscode.h>
  45 #include <pcmcia/ds.h>
  46 #include <pcmcia/cisreg.h>
  47
  48 #include <net/bluetooth/bluetooth.h>
  49 #include <net/bluetooth/hci_core.h>
  50
  51
  52
  53 /* ======================== Module parameters ======================== */
  54
  55
  56 /* Bit map of interrupts to choose from */
  57 static u_int irq_mask = 0x86bc;
  58 static int irq_list[4] = { -1 };
  59
  60 MODULE_PARM(irq_mask, "i");
  61 MODULE_PARM(irq_list, "1-4i");
  62
  63 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  64 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
  65 MODULE_LICENSE("GPL");
  66
  67
  68
  69 /* ======================== Local structures ======================== */
  70
  71
  72 typedef struct bluecard_info_t {
  73         dev_link_t link;
  74         dev_node_t node;
  75
  76         struct hci_dev *hdev;
  77
  78         spinlock_t lock;                /* For serializing operations */
  79         struct timer_list timer;        /* For LED control */
  80
  81         struct sk_buff_head txq;
  82         unsigned long tx_state;
  83
  84         unsigned long rx_state;
  85         unsigned long rx_count;
  86         struct sk_buff *rx_skb;
  87
  88         unsigned char ctrl_reg;
  89         unsigned long hw_state;         /* Status of the hardware and LED control */
  90 } bluecard_info_t;
  91
  92
  93 void bluecard_config(dev_link_t *link);
  94 void bluecard_release(dev_link_t *link);
  95 int bluecard_event(event_t event, int priority, event_callback_args_t *args);
  96
  97 static dev_info_t dev_info = "bluecard_cs";
  98
  99 dev_link_t *bluecard_attach(void);
 100 void bluecard_detach(dev_link_t *);
 101
 102 static dev_link_t *dev_list = NULL;
 103
 104
 105 /* Default baud rate: 57600, 115200, 230400 or 460800 */
 106 #define DEFAULT_BAUD_RATE  230400
 107
 108
 109 /* Hardware states */
 110 #define CARD_READY             1
 111 #define CARD_HAS_PCCARD_ID     4
 112 #define CARD_HAS_POWER_LED     5
 113 #define CARD_HAS_ACTIVITY_LED  6
 114
 115 /* Transmit states  */
 116 #define XMIT_SENDING         1
 117 #define XMIT_WAKEUP          2
 118 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 119 #define XMIT_BUF_ONE_READY   6
 120 #define XMIT_BUF_TWO_READY   7
 121 #define XMIT_SENDING_READY   8
 122
 123 /* Receiver states */
 124 #define RECV_WAIT_PACKET_TYPE   0
 125 #define RECV_WAIT_EVENT_HEADER  1
 126 #define RECV_WAIT_ACL_HEADER    2
 127 #define RECV_WAIT_SCO_HEADER    3
 128 #define RECV_WAIT_DATA          4
 129
 130 /* Special packet types */
 131 #define PKT_BAUD_RATE_57600   0x80
 132 #define PKT_BAUD_RATE_115200  0x81
 133 #define PKT_BAUD_RATE_230400  0x82
 134 #define PKT_BAUD_RATE_460800  0x83
 135
 136
 137 /* These are the register offsets */
 138 #define REG_COMMAND     0x20
 139 #define REG_INTERRUPT   0x21
 140 #define REG_CONTROL     0x22
 141 #define REG_RX_CONTROL  0x24
 142 #define REG_CARD_RESET  0x30
 143 #define REG_LED_CTRL    0x30
 144
 145 /* REG_COMMAND */
 146 #define REG_COMMAND_TX_BUF_ONE  0x01
 147 #define REG_COMMAND_TX_BUF_TWO  0x02
 148 #define REG_COMMAND_RX_BUF_ONE  0x04
 149 #define REG_COMMAND_RX_BUF_TWO  0x08
 150 #define REG_COMMAND_RX_WIN_ONE  0x00
 151 #define REG_COMMAND_RX_WIN_TWO  0x10
 152
 153 /* REG_CONTROL */
 154 #define REG_CONTROL_BAUD_RATE_57600   0x00
 155 #define REG_CONTROL_BAUD_RATE_115200  0x01
 156 #define REG_CONTROL_BAUD_RATE_230400  0x02
 157 #define REG_CONTROL_BAUD_RATE_460800  0x03
 158 #define REG_CONTROL_RTS               0x04
 159 #define REG_CONTROL_BT_ON             0x08
 160 #define REG_CONTROL_BT_RESET          0x10
 161 #define REG_CONTROL_BT_RES_PU         0x20
 162 #define REG_CONTROL_INTERRUPT         0x40
 163 #define REG_CONTROL_CARD_RESET        0x80
 164
 165 /* REG_RX_CONTROL */
 166 #define RTS_LEVEL_SHIFT_BITS  0x02
 167
 168
 169
 170 /* ======================== LED handling routines ======================== */
 171
 172
 173 void bluecard_activity_led_timeout(u_long arg)
 174 {
 175         bluecard_info_t *info = (bluecard_info_t *)arg;
 176         unsigned int iobase = info->link.io.BasePort1;
 177
 178         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 179                 return;
 180
 181         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 182                 /* Disable activity LED */
 183                 outb(0x08 | 0x20, iobase + 0x30);
 184         } else {
 185                 /* Disable power LED */
 186                 outb(0x00, iobase + 0x30);
 187         }
 188 }
 189
 190
 191 static void bluecard_enable_activity_led(bluecard_info_t *info)
 192 {
 193         unsigned int iobase = info->link.io.BasePort1;
 194
 195         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 196                 return;
 197
 198         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 199                 /* Enable activity LED */
 200                 outb(0x10 | 0x40, iobase + 0x30);
 201
 202                 /* Stop the LED after HZ/4 */
 203                 mod_timer(&(info->timer), jiffies + HZ / 4);
 204         } else {
 205                 /* Enable power LED */
 206                 outb(0x08 | 0x20, iobase + 0x30);
 207
 208                 /* Stop the LED after HZ/2 */
 209                 mod_timer(&(info->timer), jiffies + HZ / 2);
 210         }
 211 }
 212
 213
 214
 215 /* ======================== Interrupt handling ======================== */
 216
 217
 218 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
 219 {
 220         int i, actual;
 221
 222         actual = (len > 15) ? 15 : len;
 223
 224         outb_p(actual, iobase + offset);
 225
 226         for (i = 0; i < actual; i++)
 227                 outb_p(buf[i], iobase + offset + i + 1);
 228
 229         return actual;
 230 }
 231
 232
 233 static void bluecard_write_wakeup(bluecard_info_t *info)
 234 {
 235         if (!info) {
 236                 BT_ERR("Unknown device");
 237                 return;
 238         }
 239
 240         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 241                 return;
 242
 243         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 244                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 245                 return;
 246         }
 247
 248         do {
 249                 register unsigned int iobase = info->link.io.BasePort1;
 250                 register unsigned int offset;
 251                 register unsigned char command;
 252                 register unsigned long ready_bit;
 253                 register struct sk_buff *skb;
 254                 register int len;
 255
 256                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 257
 258                 if (!(info->link.state & DEV_PRESENT))
 259                         return;
 260
 261                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
 262                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
 263                                 break;
 264                         offset = 0x10;
 265                         command = REG_COMMAND_TX_BUF_TWO;
 266                         ready_bit = XMIT_BUF_TWO_READY;
 267                 } else {
 268                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
 269                                 break;
 270                         offset = 0x00;
 271                         command = REG_COMMAND_TX_BUF_ONE;
 272                         ready_bit = XMIT_BUF_ONE_READY;
 273                 }
 274
 275                 if (!(skb = skb_dequeue(&(info->txq))))
 276                         break;
 277
 278                 if (skb->pkt_type & 0x80) {
 279                         /* Disable RTS */
 280                         info->ctrl_reg |= REG_CONTROL_RTS;
 281                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 282                 }
 283
 284                 /* Activate LED */
 285                 bluecard_enable_activity_led(info);
 286
 287                 /* Send frame */
 288                 len = bluecard_write(iobase, offset, skb->data, skb->len);
 289
 290                 /* Tell the FPGA to send the data */
 291                 outb_p(command, iobase + REG_COMMAND);
 292
 293                 /* Mark the buffer as dirty */
 294                 clear_bit(ready_bit, &(info->tx_state));
 295
 296                 if (skb->pkt_type & 0x80) {
 297
 298                         wait_queue_head_t wait;
 299                         unsigned char baud_reg;
 300
 301                         switch (skb->pkt_type) {
 302                         case PKT_BAUD_RATE_460800:
 303                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 304                                 break;
 305                         case PKT_BAUD_RATE_230400:
 306                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 307                                 break;
 308                         case PKT_BAUD_RATE_115200:
 309                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 310                                 break;
 311                         case PKT_BAUD_RATE_57600:
 312                                 /* Fall through... */
 313                         default:
 314                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 315                                 break;
 316                         }
 317
 318                         /* Wait until the command reaches the baseband */
 319                         init_waitqueue_head(&wait);
 320                         interruptible_sleep_on_timeout(&wait, HZ / 10);
 321
 322                         /* Set baud on baseband */
 323                         info->ctrl_reg &= ~0x03;
 324                         info->ctrl_reg |= baud_reg;
 325                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 326
 327                         /* Enable RTS */
 328                         info->ctrl_reg &= ~REG_CONTROL_RTS;
 329                         outb(info->ctrl_reg, iobase + REG_CONTROL);
 330
 331                         /* Wait before the next HCI packet can be send */
 332                         interruptible_sleep_on_timeout(&wait, HZ);
 333
 334                 }
 335
 336                 if (len == skb->len) {
 337                         kfree_skb(skb);
 338                 } else {
 339                         skb_pull(skb, len);
 340                         skb_queue_head(&(info->txq), skb);
 341                 }
 342
 343                 info->hdev->stat.byte_tx += len;
 344
 345                 /* Change buffer */
 346                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 347
 348         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 349
 350         clear_bit(XMIT_SENDING, &(info->tx_state));
 351 }
 352
 353
 354 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 355 {
 356         int i, n, len;
 357
 358         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 359
 360         len = inb(iobase + offset);
 361         n = 0;
 362         i = 1;
 363
 364         while (n < len) {
 365
 366                 if (i == 16) {
 367                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 368                         i = 0;
 369                 }
 370
 371                 buf[n] = inb(iobase + offset + i);
 372
 373                 n++;
 374                 i++;
 375
 376         }
 377
 378         return len;
 379 }
 380
 381
 382 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 383 {
 384         unsigned int iobase;
 385         unsigned char buf[31];
 386         int i, len;
 387
 388         if (!info) {
 389                 BT_ERR("Unknown device");
 390                 return;
 391         }
 392
 393         iobase = info->link.io.BasePort1;
 394
 395         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 396                 bluecard_enable_activity_led(info);
 397
 398         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 399
 400         for (i = 0; i < len; i++) {
 401
 402                 /* Allocate packet */
 403                 if (info->rx_skb == NULL) {
 404                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 405                         info->rx_count = 0;
 406                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 407                                 BT_ERR("Can't allocate mem for new packet");
 408                                 return;
 409                         }
 410                 }
 411
 412                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 413
 414                         info->rx_skb->dev = (void *) info->hdev;
 415                         info->rx_skb->pkt_type = buf[i];
 416
 417                         switch (info->rx_skb->pkt_type) {
 418
 419                         case 0x00:
 420                                 /* init packet */
 421                                 if (offset != 0x00) {
 422                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 423                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 424                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 425                                         bluecard_write_wakeup(info);
 426                                 }
 427
 428                                 kfree_skb(info->rx_skb);
 429                                 info->rx_skb = NULL;
 430                                 break;
 431
 432                         case HCI_EVENT_PKT:
 433                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 434                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 435                                 break;
 436
 437                         case HCI_ACLDATA_PKT:
 438                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 439                                 info->rx_count = HCI_ACL_HDR_SIZE;
 440                                 break;
 441
 442                         case HCI_SCODATA_PKT:
 443                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 444                                 info->rx_count = HCI_SCO_HDR_SIZE;
 445                                 break;
 446
 447                         default:
 448                                 /* unknown packet */
 449                                 BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type);
 450                                 info->hdev->stat.err_rx++;
 451
 452                                 kfree_skb(info->rx_skb);
 453                                 info->rx_skb = NULL;
 454                                 break;
 455
 456                         }
 457
 458                 } else {
 459
 460                         *skb_put(info->rx_skb, 1) = buf[i];
 461                         info->rx_count--;
 462
 463                         if (info->rx_count == 0) {
 464
 465                                 int dlen;
 466                                 struct hci_event_hdr *eh;
 467                                 struct hci_acl_hdr *ah;
 468                                 struct hci_sco_hdr *sh;
 469
 470                                 switch (info->rx_state) {
 471
 472                                 case RECV_WAIT_EVENT_HEADER:
 473                                         eh = (struct hci_event_hdr *)(info->rx_skb->data);
 474                                         info->rx_state = RECV_WAIT_DATA;
 475                                         info->rx_count = eh->plen;
 476                                         break;
 477
 478                                 case RECV_WAIT_ACL_HEADER:
 479                                         ah = (struct hci_acl_hdr *)(info->rx_skb->data);
 480                                         dlen = __le16_to_cpu(ah->dlen);
 481                                         info->rx_state = RECV_WAIT_DATA;
 482                                         info->rx_count = dlen;
 483                                         break;
 484
 485                                 case RECV_WAIT_SCO_HEADER:
 486                                         sh = (struct hci_sco_hdr *)(info->rx_skb->data);
 487                                         info->rx_state = RECV_WAIT_DATA;
 488                                         info->rx_count = sh->dlen;
 489                                         break;
 490
 491                                 case RECV_WAIT_DATA:
 492                                         hci_recv_frame(info->rx_skb);
 493                                         info->rx_skb = NULL;
 494                                         break;
 495
 496                                 }
 497
 498                         }
 499
 500                 }
 501
 502
 503         }
 504
 505         info->hdev->stat.byte_rx += len;
 506 }
 507
 508
 509 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 510 {
 511         bluecard_info_t *info = dev_inst;
 512         unsigned int iobase;
 513         unsigned char reg;
 514
 515         if (!info || !info->hdev) {
 516                 BT_ERR("Call of irq %d for unknown device", irq);
 517                 return IRQ_NONE;
 518         }
 519
 520         if (!test_bit(CARD_READY, &(info->hw_state)))
 521                 return IRQ_HANDLED;
 522
 523         iobase = info->link.io.BasePort1;
 524
 525         spin_lock(&(info->lock));
 526
 527         /* Disable interrupt */
 528         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 529         outb(info->ctrl_reg, iobase + REG_CONTROL);
 530
 531         reg = inb(iobase + REG_INTERRUPT);
 532
 533         if ((reg != 0x00) && (reg != 0xff)) {
 534
 535                 if (reg & 0x04) {
 536                         bluecard_receive(info, 0x00);
 537                         outb(0x04, iobase + REG_INTERRUPT);
 538                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 539                 }
 540
 541                 if (reg & 0x08) {
 542                         bluecard_receive(info, 0x10);
 543                         outb(0x08, iobase + REG_INTERRUPT);
 544                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 545                 }
 546
 547                 if (reg & 0x01) {
 548                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 549                         outb(0x01, iobase + REG_INTERRUPT);
 550                         bluecard_write_wakeup(info);
 551                 }
 552
 553                 if (reg & 0x02) {
 554                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 555                         outb(0x02, iobase + REG_INTERRUPT);
 556                         bluecard_write_wakeup(info);
 557                 }
 558
 559         }
 560
 561         /* Enable interrupt */
 562         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 563         outb(info->ctrl_reg, iobase + REG_CONTROL);
 564
 565         spin_unlock(&(info->lock));
 566
 567         return IRQ_HANDLED;
 568 }
 569
 570
 571
 572 /* ======================== Device specific HCI commands ======================== */
 573
 574
 575 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 576 {
 577         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 578         struct sk_buff *skb;
 579
 580         /* Ericsson baud rate command */
 581         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 582
 583         if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 584                 BT_ERR("Can't allocate mem for new packet");
 585                 return -1;
 586         }
 587
 588         switch (baud) {
 589         case 460800:
 590                 cmd[4] = 0x00;
 591                 skb->pkt_type = PKT_BAUD_RATE_460800;
 592                 break;
 593         case 230400:
 594                 cmd[4] = 0x01;
 595                 skb->pkt_type = PKT_BAUD_RATE_230400;
 596                 break;
 597         case 115200:
 598                 cmd[4] = 0x02;
 599                 skb->pkt_type = PKT_BAUD_RATE_115200;
 600                 break;
 601         case 57600:
 602                 /* Fall through... */
 603         default:
 604                 cmd[4] = 0x03;
 605                 skb->pkt_type = PKT_BAUD_RATE_57600;
 606                 break;
 607         }
 608
 609         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 610
 611         skb_queue_tail(&(info->txq), skb);
 612
 613         bluecard_write_wakeup(info);
 614
 615         return 0;
 616 }
 617
 618
 619
 620 /* ======================== HCI interface ======================== */
 621
 622
 623 static int bluecard_hci_flush(struct hci_dev *hdev)
 624 {
 625         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 626
 627         /* Drop TX queue */
 628         skb_queue_purge(&(info->txq));
 629
 630         return 0;
 631 }
 632
 633
 634 static int bluecard_hci_open(struct hci_dev *hdev)
 635 {
 636         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 637         unsigned int iobase = info->link.io.BasePort1;
 638
 639         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 640                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 641
 642         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
 643                 return 0;
 644
 645         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 646                 /* Enable LED */
 647                 outb(0x08 | 0x20, iobase + 0x30);
 648         }
 649
 650         return 0;
 651 }
 652
 653
 654 static int bluecard_hci_close(struct hci_dev *hdev)
 655 {
 656         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 657         unsigned int iobase = info->link.io.BasePort1;
 658
 659         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 660                 return 0;
 661
 662         bluecard_hci_flush(hdev);
 663
 664         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 665                 /* Disable LED */
 666                 outb(0x00, iobase + 0x30);
 667         }
 668
 669         return 0;
 670 }
 671
 672
 673 static int bluecard_hci_send_frame(struct sk_buff *skb)
 674 {
 675         bluecard_info_t *info;
 676         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 677
 678         if (!hdev) {
 679                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 680                 return -ENODEV;
 681         }
 682
 683         info = (bluecard_info_t *)(hdev->driver_data);
 684
 685         switch (skb->pkt_type) {
 686         case HCI_COMMAND_PKT:
 687                 hdev->stat.cmd_tx++;
 688                 break;
 689         case HCI_ACLDATA_PKT:
 690                 hdev->stat.acl_tx++;
 691                 break;
 692         case HCI_SCODATA_PKT:
 693                 hdev->stat.sco_tx++;
 694                 break;
 695         };
 696
 697         /* Prepend skb with frame type */
 698         memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
 699         skb_queue_tail(&(info->txq), skb);
 700
 701         bluecard_write_wakeup(info);
 702
 703         return 0;
 704 }
 705
 706
 707 static void bluecard_hci_destruct(struct hci_dev *hdev)
 708 {
 709 }
 710
 711
 712 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 713 {
 714         return -ENOIOCTLCMD;
 715 }
 716
 717
 718
 719 /* ======================== Card services HCI interaction ======================== */
 720
 721
 722 int bluecard_open(bluecard_info_t *info)
 723 {
 724         unsigned int iobase = info->link.io.BasePort1;
 725         struct hci_dev *hdev;
 726         unsigned char id;
 727
 728         spin_lock_init(&(info->lock));
 729
 730         init_timer(&(info->timer));
 731         info->timer.function = &bluecard_activity_led_timeout;
 732         info->timer.data = (u_long)info;
 733
 734         skb_queue_head_init(&(info->txq));
 735
 736         info->rx_state = RECV_WAIT_PACKET_TYPE;
 737         info->rx_count = 0;
 738         info->rx_skb = NULL;
 739
 740         /* Initialize HCI device */
 741         hdev = hci_alloc_dev();
 742         if (!hdev) {
 743                 BT_ERR("Can't allocate HCI device");
 744                 return -ENOMEM;
 745         }
 746
 747         info->hdev = hdev;
 748
 749         hdev->type = HCI_PCCARD;
 750         hdev->driver_data = info;
 751
 752         hdev->open     = bluecard_hci_open;
 753         hdev->close    = bluecard_hci_close;
 754         hdev->flush    = bluecard_hci_flush;
 755         hdev->send     = bluecard_hci_send_frame;
 756         hdev->destruct = bluecard_hci_destruct;
 757         hdev->ioctl    = bluecard_hci_ioctl;
 758
 759         hdev->owner = THIS_MODULE;
 760
 761         id = inb(iobase + 0x30);
 762
 763         if ((id & 0x0f) == 0x02)
 764                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 765
 766         if (id & 0x10)
 767                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 768
 769         if (id & 0x20)
 770                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 771
 772         /* Reset card */
 773         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 774         outb(info->ctrl_reg, iobase + REG_CONTROL);
 775
 776         /* Turn FPGA off */
 777         outb(0x80, iobase + 0x30);
 778
 779         /* Wait some time */
 780         msleep(10);
 781
 782         /* Turn FPGA on */
 783         outb(0x00, iobase + 0x30);
 784
 785         /* Activate card */
 786         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 787         outb(info->ctrl_reg, iobase + REG_CONTROL);
 788
 789         /* Enable interrupt */
 790         outb(0xff, iobase + REG_INTERRUPT);
 791         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 792         outb(info->ctrl_reg, iobase + REG_CONTROL);
 793
 794         if ((id & 0x0f) == 0x03) {
 795                 /* Disable RTS */
 796                 info->ctrl_reg |= REG_CONTROL_RTS;
 797                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 798
 799                 /* Set baud rate */
 800                 info->ctrl_reg |= 0x03;
 801                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 802
 803                 /* Enable RTS */
 804                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 805                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 806
 807                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 808                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 809                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 810         }
 811
 812         /* Start the RX buffers */
 813         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 814         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 815
 816         /* Signal that the hardware is ready */
 817         set_bit(CARD_READY, &(info->hw_state));
 818
 819         /* Drop TX queue */
 820         skb_queue_purge(&(info->txq));
 821
 822         /* Control the point at which RTS is enabled */
 823         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 824
 825         /* Timeout before it is safe to send the first HCI packet */
 826         msleep(1250);
 827
 828         /* Register HCI device */
 829         if (hci_register_dev(hdev) < 0) {
 830                 BT_ERR("Can't register HCI device");
 831                 info->hdev = NULL;
 832                 hci_free_dev(hdev);
 833                 return -ENODEV;
 834         }
 835
 836         return 0;
 837 }
 838
 839
 840 int bluecard_close(bluecard_info_t *info)
 841 {
 842         unsigned int iobase = info->link.io.BasePort1;
 843         struct hci_dev *hdev = info->hdev;
 844
 845         if (!hdev)
 846                 return -ENODEV;
 847
 848         bluecard_hci_close(hdev);
 849
 850         clear_bit(CARD_READY, &(info->hw_state));
 851
 852         /* Reset card */
 853         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 854         outb(info->ctrl_reg, iobase + REG_CONTROL);
 855
 856         /* Turn FPGA off */
 857         outb(0x80, iobase + 0x30);
 858
 859         if (hci_unregister_dev(hdev) < 0)
 860                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 861
 862         hci_free_dev(hdev);
 863
 864         return 0;
 865 }
 866
 867 dev_link_t *bluecard_attach(void)
 868 {
 869         bluecard_info_t *info;
 870         client_reg_t client_reg;
 871         dev_link_t *link;
 872         int i, ret;
 873
 874         /* Create new info device */
 875         info = kmalloc(sizeof(*info), GFP_KERNEL);
 876         if (!info)
 877                 return NULL;
 878         memset(info, 0, sizeof(*info));
 879
 880         link = &info->link;
 881         link->priv = info;
 882
 883         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 884         link->io.NumPorts1 = 8;
 885         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 886         link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 887
 888         if (irq_list[0] == -1)
 889                 link->irq.IRQInfo2 = irq_mask;
 890         else
 891                 for (i = 0; i < 4; i++)
 892                         link->irq.IRQInfo2 |= 1 << irq_list[i];
 893
 894         link->irq.Handler = bluecard_interrupt;
 895         link->irq.Instance = info;
 896
 897         link->conf.Attributes = CONF_ENABLE_IRQ;
 898         link->conf.Vcc = 50;
 899         link->conf.IntType = INT_MEMORY_AND_IO;
 900
 901         /* Register with Card Services */
 902         link->next = dev_list;
 903         dev_list = link;
 904         client_reg.dev_info = &dev_info;
 905         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 906         client_reg.EventMask =
 907                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 908                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 909                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 910         client_reg.event_handler = &bluecard_event;
 911         client_reg.Version = 0x0210;
 912         client_reg.event_callback_args.client_data = link;
 913
 914         ret = pcmcia_register_client(&link->handle, &client_reg);
 915         if (ret != CS_SUCCESS) {
 916                 cs_error(link->handle, RegisterClient, ret);
 917                 bluecard_detach(link);
 918                 return NULL;
 919         }
 920
 921         return link;
 922 }
 923
 924
 925 void bluecard_detach(dev_link_t *link)
 926 {
 927         bluecard_info_t *info = link->priv;
 928         dev_link_t **linkp;
 929         int ret;
 930
 931         /* Locate device structure */
 932         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 933                 if (*linkp == link)
 934                         break;
 935
 936         if (*linkp == NULL)
 937                 return;
 938
 939         if (link->state & DEV_CONFIG)
 940                 bluecard_release(link);
 941
 942         if (link->handle) {
 943                 ret = pcmcia_deregister_client(link->handle);
 944                 if (ret != CS_SUCCESS)
 945                         cs_error(link->handle, DeregisterClient, ret);
 946         }
 947
 948         /* Unlink device structure, free bits */
 949         *linkp = link->next;
 950
 951         kfree(info);
 952 }
 953
 954
 955 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 956 {
 957         int i;
 958
 959         i = pcmcia_get_first_tuple(handle, tuple);
 960         if (i != CS_SUCCESS)
 961                 return CS_NO_MORE_ITEMS;
 962
 963         i = pcmcia_get_tuple_data(handle, tuple);
 964         if (i != CS_SUCCESS)
 965                 return i;
 966
 967         return pcmcia_parse_tuple(handle, tuple, parse);
 968 }
 969
 970 void bluecard_config(dev_link_t *link)
 971 {
 972         client_handle_t handle = link->handle;
 973         bluecard_info_t *info = link->priv;
 974         tuple_t tuple;
 975         u_short buf[256];
 976         cisparse_t parse;
 977         config_info_t config;
 978         int i, n, last_ret, last_fn;
 979
 980         tuple.TupleData = (cisdata_t *)buf;
 981         tuple.TupleOffset = 0;
 982         tuple.TupleDataMax = 255;
 983         tuple.Attributes = 0;
 984
 985         /* Get configuration register information */
 986         tuple.DesiredTuple = CISTPL_CONFIG;
 987         last_ret = first_tuple(handle, &tuple, &parse);
 988         if (last_ret != CS_SUCCESS) {
 989                 last_fn = ParseTuple;
 990                 goto cs_failed;
 991         }
 992         link->conf.ConfigBase = parse.config.base;
 993         link->conf.Present = parse.config.rmask[0];
 994
 995         /* Configure card */
 996         link->state |= DEV_CONFIG;
 997         i = pcmcia_get_configuration_info(handle, &config);
 998         link->conf.Vcc = config.Vcc;
 999
1000         link->conf.ConfigIndex = 0x20;
1001         link->io.NumPorts1 = 64;
1002         link->io.IOAddrLines = 6;
1003
1004         for (n = 0; n < 0x400; n += 0x40) {
1005                 link->io.BasePort1 = n ^ 0x300;
1006                 i = pcmcia_request_io(link->handle, &link->io);
1007                 if (i == CS_SUCCESS)
1008                         break;
1009         }
1010
1011         if (i != CS_SUCCESS) {
1012                 cs_error(link->handle, RequestIO, i);
1013                 goto failed;
1014         }
1015
1016         i = pcmcia_request_irq(link->handle, &link->irq);
1017         if (i != CS_SUCCESS) {
1018                 cs_error(link->handle, RequestIRQ, i);
1019                 link->irq.AssignedIRQ = 0;
1020         }
1021
1022         i = pcmcia_request_configuration(link->handle, &link->conf);
1023         if (i != CS_SUCCESS) {
1024                 cs_error(link->handle, RequestConfiguration, i);
1025                 goto failed;
1026         }
1027
1028         if (bluecard_open(info) != 0)
1029                 goto failed;
1030
1031         strcpy(info->node.dev_name, info->hdev->name);
1032         link->dev = &info->node;
1033         link->state &= ~DEV_CONFIG_PENDING;
1034
1035         return;
1036
1037 cs_failed:
1038         cs_error(link->handle, last_fn, last_ret);
1039
1040 failed:
1041         bluecard_release(link);
1042 }
1043
1044
1045 void bluecard_release(dev_link_t *link)
1046 {
1047         bluecard_info_t *info = link->priv;
1048
1049         if (link->state & DEV_PRESENT)
1050                 bluecard_close(info);
1051
1052         del_timer(&(info->timer));
1053
1054         link->dev = NULL;
1055
1056         pcmcia_release_configuration(link->handle);
1057         pcmcia_release_io(link->handle, &link->io);
1058         pcmcia_release_irq(link->handle, &link->irq);
1059
1060         link->state &= ~DEV_CONFIG;
1061 }
1062
1063
1064 int bluecard_event(event_t event, int priority, event_callback_args_t *args)
1065 {
1066         dev_link_t *link = args->client_data;
1067         bluecard_info_t *info = link->priv;
1068
1069         switch (event) {
1070         case CS_EVENT_CARD_REMOVAL:
1071                 link->state &= ~DEV_PRESENT;
1072                 if (link->state & DEV_CONFIG) {
1073                         bluecard_close(info);
1074                         bluecard_release(link);
1075                 }
1076                 break;
1077         case CS_EVENT_CARD_INSERTION:
1078                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
1079                 bluecard_config(link);
1080                 break;
1081         case CS_EVENT_PM_SUSPEND:
1082                 link->state |= DEV_SUSPEND;
1083                 /* Fall through... */
1084         case CS_EVENT_RESET_PHYSICAL:
1085                 if (link->state & DEV_CONFIG)
1086                         pcmcia_release_configuration(link->handle);
1087                 break;
1088         case CS_EVENT_PM_RESUME:
1089                 link->state &= ~DEV_SUSPEND;
1090                 /* Fall through... */
1091         case CS_EVENT_CARD_RESET:
1092                 if (DEV_OK(link))
1093                         pcmcia_request_configuration(link->handle, &link->conf);
1094                 break;
1095         }
1096
1097         return 0;
1098 }
1099
1100 static struct pcmcia_driver bluecard_driver = {
1101         .owner          = THIS_MODULE,
1102         .drv            = {
1103                 .name   = "bluecard_cs",
1104         },
1105         .attach         = bluecard_attach,
1106         .detach         = bluecard_detach,
1107 };
1108
1109 static int __init init_bluecard_cs(void)
1110 {
1111         return pcmcia_register_driver(&bluecard_driver);
1112 }
1113
1114
1115 static void __exit exit_bluecard_cs(void)
1116 {
1117         pcmcia_unregister_driver(&bluecard_driver);
1118
1119         /* XXX: this really needs to move into generic code.. */
1120         while (dev_list != NULL)
1121                 bluecard_detach(dev_list);
1122 }
1123
1124 module_init(init_bluecard_cs);
1125 module_exit(exit_bluecard_cs);