git.oblomov.eu Git - linux-2.6/blob - drivers/bluetooth/bluecard_cs.c

   1 /*
   2  *
   3  *  Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
   4  *
   5  *  Copyright (C) 2001-2002  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation;
  11  *
  12  *  Software distributed under the License is distributed on an "AS
  13  *  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  14  *  implied. See the License for the specific language governing
  15  *  rights and limitations under the License.
  16  *
  17  *  The initial developer of the original code is David A. Hinds
  18  *  <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  19  *  are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  20  *
  21  */
  22
  23 #include <linux/config.h>
  24 #include <linux/module.h>
  25
  26 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/slab.h>
  29 #include <linux/types.h>
  30 #include <linux/sched.h>
  31 #include <linux/delay.h>
  32 #include <linux/timer.h>
  33 #include <linux/errno.h>
  34 #include <linux/ptrace.h>
  35 #include <linux/ioport.h>
  36 #include <linux/spinlock.h>
  37 #include <linux/moduleparam.h>
  38 #include <linux/wait.h>
  39
  40 #include <linux/skbuff.h>
  41 #include <asm/io.h>
  42
  43 #include <pcmcia/cs_types.h>
  44 #include <pcmcia/cs.h>
  45 #include <pcmcia/cistpl.h>
  46 #include <pcmcia/ciscode.h>
  47 #include <pcmcia/ds.h>
  48 #include <pcmcia/cisreg.h>
  49
  50 #include <net/bluetooth/bluetooth.h>
  51 #include <net/bluetooth/hci_core.h>
  52
  53
  54
  55 /* ======================== Module parameters ======================== */
  56
  57
  58 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  59 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
  60 MODULE_LICENSE("GPL");
  61
  62
  63
  64 /* ======================== Local structures ======================== */
  65
  66
  67 typedef struct bluecard_info_t {
  68         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(struct pcmcia_device *p_dev);
  96
  97
  98 /* Default baud rate: 57600, 115200, 230400 or 460800 */
  99 #define DEFAULT_BAUD_RATE  230400
 100
 101
 102 /* Hardware states */
 103 #define CARD_READY             1
 104 #define CARD_HAS_PCCARD_ID     4
 105 #define CARD_HAS_POWER_LED     5
 106 #define CARD_HAS_ACTIVITY_LED  6
 107
 108 /* Transmit states  */
 109 #define XMIT_SENDING         1
 110 #define XMIT_WAKEUP          2
 111 #define XMIT_BUFFER_NUMBER   5  /* unset = buffer one, set = buffer two */
 112 #define XMIT_BUF_ONE_READY   6
 113 #define XMIT_BUF_TWO_READY   7
 114 #define XMIT_SENDING_READY   8
 115
 116 /* Receiver states */
 117 #define RECV_WAIT_PACKET_TYPE   0
 118 #define RECV_WAIT_EVENT_HEADER  1
 119 #define RECV_WAIT_ACL_HEADER    2
 120 #define RECV_WAIT_SCO_HEADER    3
 121 #define RECV_WAIT_DATA          4
 122
 123 /* Special packet types */
 124 #define PKT_BAUD_RATE_57600   0x80
 125 #define PKT_BAUD_RATE_115200  0x81
 126 #define PKT_BAUD_RATE_230400  0x82
 127 #define PKT_BAUD_RATE_460800  0x83
 128
 129
 130 /* These are the register offsets */
 131 #define REG_COMMAND     0x20
 132 #define REG_INTERRUPT   0x21
 133 #define REG_CONTROL     0x22
 134 #define REG_RX_CONTROL  0x24
 135 #define REG_CARD_RESET  0x30
 136 #define REG_LED_CTRL    0x30
 137
 138 /* REG_COMMAND */
 139 #define REG_COMMAND_TX_BUF_ONE  0x01
 140 #define REG_COMMAND_TX_BUF_TWO  0x02
 141 #define REG_COMMAND_RX_BUF_ONE  0x04
 142 #define REG_COMMAND_RX_BUF_TWO  0x08
 143 #define REG_COMMAND_RX_WIN_ONE  0x00
 144 #define REG_COMMAND_RX_WIN_TWO  0x10
 145
 146 /* REG_CONTROL */
 147 #define REG_CONTROL_BAUD_RATE_57600   0x00
 148 #define REG_CONTROL_BAUD_RATE_115200  0x01
 149 #define REG_CONTROL_BAUD_RATE_230400  0x02
 150 #define REG_CONTROL_BAUD_RATE_460800  0x03
 151 #define REG_CONTROL_RTS               0x04
 152 #define REG_CONTROL_BT_ON             0x08
 153 #define REG_CONTROL_BT_RESET          0x10
 154 #define REG_CONTROL_BT_RES_PU         0x20
 155 #define REG_CONTROL_INTERRUPT         0x40
 156 #define REG_CONTROL_CARD_RESET        0x80
 157
 158 /* REG_RX_CONTROL */
 159 #define RTS_LEVEL_SHIFT_BITS  0x02
 160
 161
 162
 163 /* ======================== LED handling routines ======================== */
 164
 165
 166 static void bluecard_activity_led_timeout(u_long arg)
 167 {
 168         bluecard_info_t *info = (bluecard_info_t *)arg;
 169         unsigned int iobase = info->link.io.BasePort1;
 170
 171         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 172                 return;
 173
 174         if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
 175                 /* Disable activity LED */
 176                 outb(0x08 | 0x20, iobase + 0x30);
 177         } else {
 178                 /* Disable power LED */
 179                 outb(0x00, iobase + 0x30);
 180         }
 181 }
 182
 183
 184 static void bluecard_enable_activity_led(bluecard_info_t *info)
 185 {
 186         unsigned int iobase = info->link.io.BasePort1;
 187
 188         if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 189                 return;
 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                 BT_ERR("Unknown device");
 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 (bt_cb(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 (bt_cb(skb)->pkt_type & 0x80) {
 290                         DECLARE_WAIT_QUEUE_HEAD(wq);
 291                         DEFINE_WAIT(wait);
 292
 293                         unsigned char baud_reg;
 294
 295                         switch (bt_cb(skb)->pkt_type) {
 296                         case PKT_BAUD_RATE_460800:
 297                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
 298                                 break;
 299                         case PKT_BAUD_RATE_230400:
 300                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
 301                                 break;
 302                         case PKT_BAUD_RATE_115200:
 303                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
 304                                 break;
 305                         case PKT_BAUD_RATE_57600:
 306                                 /* Fall through... */
 307                         default:
 308                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
 309                                 break;
 310                         }
 311
 312                         /* Wait until the command reaches the baseband */
 313                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 314                         schedule_timeout(HZ/10);
 315                         finish_wait(&wq, &wait);
 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                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
 328                         schedule_timeout(HZ);
 329                         finish_wait(&wq, &wait);
 330                 }
 331
 332                 if (len == skb->len) {
 333                         kfree_skb(skb);
 334                 } else {
 335                         skb_pull(skb, len);
 336                         skb_queue_head(&(info->txq), skb);
 337                 }
 338
 339                 info->hdev->stat.byte_tx += len;
 340
 341                 /* Change buffer */
 342                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
 343
 344         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 345
 346         clear_bit(XMIT_SENDING, &(info->tx_state));
 347 }
 348
 349
 350 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
 351 {
 352         int i, n, len;
 353
 354         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
 355
 356         len = inb(iobase + offset);
 357         n = 0;
 358         i = 1;
 359
 360         while (n < len) {
 361
 362                 if (i == 16) {
 363                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
 364                         i = 0;
 365                 }
 366
 367                 buf[n] = inb(iobase + offset + i);
 368
 369                 n++;
 370                 i++;
 371
 372         }
 373
 374         return len;
 375 }
 376
 377
 378 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
 379 {
 380         unsigned int iobase;
 381         unsigned char buf[31];
 382         int i, len;
 383
 384         if (!info) {
 385                 BT_ERR("Unknown device");
 386                 return;
 387         }
 388
 389         iobase = info->link.io.BasePort1;
 390
 391         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
 392                 bluecard_enable_activity_led(info);
 393
 394         len = bluecard_read(iobase, offset, buf, sizeof(buf));
 395
 396         for (i = 0; i < len; i++) {
 397
 398                 /* Allocate packet */
 399                 if (info->rx_skb == NULL) {
 400                         info->rx_state = RECV_WAIT_PACKET_TYPE;
 401                         info->rx_count = 0;
 402                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 403                                 BT_ERR("Can't allocate mem for new packet");
 404                                 return;
 405                         }
 406                 }
 407
 408                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 409
 410                         info->rx_skb->dev = (void *) info->hdev;
 411                         bt_cb(info->rx_skb)->pkt_type = buf[i];
 412
 413                         switch (bt_cb(info->rx_skb)->pkt_type) {
 414
 415                         case 0x00:
 416                                 /* init packet */
 417                                 if (offset != 0x00) {
 418                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 419                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 420                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
 421                                         bluecard_write_wakeup(info);
 422                                 }
 423
 424                                 kfree_skb(info->rx_skb);
 425                                 info->rx_skb = NULL;
 426                                 break;
 427
 428                         case HCI_EVENT_PKT:
 429                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
 430                                 info->rx_count = HCI_EVENT_HDR_SIZE;
 431                                 break;
 432
 433                         case HCI_ACLDATA_PKT:
 434                                 info->rx_state = RECV_WAIT_ACL_HEADER;
 435                                 info->rx_count = HCI_ACL_HDR_SIZE;
 436                                 break;
 437
 438                         case HCI_SCODATA_PKT:
 439                                 info->rx_state = RECV_WAIT_SCO_HEADER;
 440                                 info->rx_count = HCI_SCO_HDR_SIZE;
 441                                 break;
 442
 443                         default:
 444                                 /* unknown packet */
 445                                 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
 446                                 info->hdev->stat.err_rx++;
 447
 448                                 kfree_skb(info->rx_skb);
 449                                 info->rx_skb = NULL;
 450                                 break;
 451
 452                         }
 453
 454                 } else {
 455
 456                         *skb_put(info->rx_skb, 1) = buf[i];
 457                         info->rx_count--;
 458
 459                         if (info->rx_count == 0) {
 460
 461                                 int dlen;
 462                                 struct hci_event_hdr *eh;
 463                                 struct hci_acl_hdr *ah;
 464                                 struct hci_sco_hdr *sh;
 465
 466                                 switch (info->rx_state) {
 467
 468                                 case RECV_WAIT_EVENT_HEADER:
 469                                         eh = (struct hci_event_hdr *)(info->rx_skb->data);
 470                                         info->rx_state = RECV_WAIT_DATA;
 471                                         info->rx_count = eh->plen;
 472                                         break;
 473
 474                                 case RECV_WAIT_ACL_HEADER:
 475                                         ah = (struct hci_acl_hdr *)(info->rx_skb->data);
 476                                         dlen = __le16_to_cpu(ah->dlen);
 477                                         info->rx_state = RECV_WAIT_DATA;
 478                                         info->rx_count = dlen;
 479                                         break;
 480
 481                                 case RECV_WAIT_SCO_HEADER:
 482                                         sh = (struct hci_sco_hdr *)(info->rx_skb->data);
 483                                         info->rx_state = RECV_WAIT_DATA;
 484                                         info->rx_count = sh->dlen;
 485                                         break;
 486
 487                                 case RECV_WAIT_DATA:
 488                                         hci_recv_frame(info->rx_skb);
 489                                         info->rx_skb = NULL;
 490                                         break;
 491
 492                                 }
 493
 494                         }
 495
 496                 }
 497
 498
 499         }
 500
 501         info->hdev->stat.byte_rx += len;
 502 }
 503
 504
 505 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 506 {
 507         bluecard_info_t *info = dev_inst;
 508         unsigned int iobase;
 509         unsigned char reg;
 510
 511         if (!info || !info->hdev) {
 512                 BT_ERR("Call of irq %d for unknown device", irq);
 513                 return IRQ_NONE;
 514         }
 515
 516         if (!test_bit(CARD_READY, &(info->hw_state)))
 517                 return IRQ_HANDLED;
 518
 519         iobase = info->link.io.BasePort1;
 520
 521         spin_lock(&(info->lock));
 522
 523         /* Disable interrupt */
 524         info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
 525         outb(info->ctrl_reg, iobase + REG_CONTROL);
 526
 527         reg = inb(iobase + REG_INTERRUPT);
 528
 529         if ((reg != 0x00) && (reg != 0xff)) {
 530
 531                 if (reg & 0x04) {
 532                         bluecard_receive(info, 0x00);
 533                         outb(0x04, iobase + REG_INTERRUPT);
 534                         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 535                 }
 536
 537                 if (reg & 0x08) {
 538                         bluecard_receive(info, 0x10);
 539                         outb(0x08, iobase + REG_INTERRUPT);
 540                         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 541                 }
 542
 543                 if (reg & 0x01) {
 544                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 545                         outb(0x01, iobase + REG_INTERRUPT);
 546                         bluecard_write_wakeup(info);
 547                 }
 548
 549                 if (reg & 0x02) {
 550                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 551                         outb(0x02, iobase + REG_INTERRUPT);
 552                         bluecard_write_wakeup(info);
 553                 }
 554
 555         }
 556
 557         /* Enable interrupt */
 558         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 559         outb(info->ctrl_reg, iobase + REG_CONTROL);
 560
 561         spin_unlock(&(info->lock));
 562
 563         return IRQ_HANDLED;
 564 }
 565
 566
 567
 568 /* ======================== Device specific HCI commands ======================== */
 569
 570
 571 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
 572 {
 573         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 574         struct sk_buff *skb;
 575
 576         /* Ericsson baud rate command */
 577         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
 578
 579         if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 580                 BT_ERR("Can't allocate mem for new packet");
 581                 return -1;
 582         }
 583
 584         switch (baud) {
 585         case 460800:
 586                 cmd[4] = 0x00;
 587                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
 588                 break;
 589         case 230400:
 590                 cmd[4] = 0x01;
 591                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
 592                 break;
 593         case 115200:
 594                 cmd[4] = 0x02;
 595                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
 596                 break;
 597         case 57600:
 598                 /* Fall through... */
 599         default:
 600                 cmd[4] = 0x03;
 601                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
 602                 break;
 603         }
 604
 605         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 606
 607         skb_queue_tail(&(info->txq), skb);
 608
 609         bluecard_write_wakeup(info);
 610
 611         return 0;
 612 }
 613
 614
 615
 616 /* ======================== HCI interface ======================== */
 617
 618
 619 static int bluecard_hci_flush(struct hci_dev *hdev)
 620 {
 621         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 622
 623         /* Drop TX queue */
 624         skb_queue_purge(&(info->txq));
 625
 626         return 0;
 627 }
 628
 629
 630 static int bluecard_hci_open(struct hci_dev *hdev)
 631 {
 632         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 633         unsigned int iobase = info->link.io.BasePort1;
 634
 635         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 636                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 637
 638         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
 639                 return 0;
 640
 641         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 642                 /* Enable LED */
 643                 outb(0x08 | 0x20, iobase + 0x30);
 644         }
 645
 646         return 0;
 647 }
 648
 649
 650 static int bluecard_hci_close(struct hci_dev *hdev)
 651 {
 652         bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
 653         unsigned int iobase = info->link.io.BasePort1;
 654
 655         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 656                 return 0;
 657
 658         bluecard_hci_flush(hdev);
 659
 660         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
 661                 /* Disable LED */
 662                 outb(0x00, iobase + 0x30);
 663         }
 664
 665         return 0;
 666 }
 667
 668
 669 static int bluecard_hci_send_frame(struct sk_buff *skb)
 670 {
 671         bluecard_info_t *info;
 672         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 673
 674         if (!hdev) {
 675                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 676                 return -ENODEV;
 677         }
 678
 679         info = (bluecard_info_t *)(hdev->driver_data);
 680
 681         switch (bt_cb(skb)->pkt_type) {
 682         case HCI_COMMAND_PKT:
 683                 hdev->stat.cmd_tx++;
 684                 break;
 685         case HCI_ACLDATA_PKT:
 686                 hdev->stat.acl_tx++;
 687                 break;
 688         case HCI_SCODATA_PKT:
 689                 hdev->stat.sco_tx++;
 690                 break;
 691         };
 692
 693         /* Prepend skb with frame type */
 694         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 695         skb_queue_tail(&(info->txq), skb);
 696
 697         bluecard_write_wakeup(info);
 698
 699         return 0;
 700 }
 701
 702
 703 static void bluecard_hci_destruct(struct hci_dev *hdev)
 704 {
 705 }
 706
 707
 708 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 709 {
 710         return -ENOIOCTLCMD;
 711 }
 712
 713
 714
 715 /* ======================== Card services HCI interaction ======================== */
 716
 717
 718 static int bluecard_open(bluecard_info_t *info)
 719 {
 720         unsigned int iobase = info->link.io.BasePort1;
 721         struct hci_dev *hdev;
 722         unsigned char id;
 723
 724         spin_lock_init(&(info->lock));
 725
 726         init_timer(&(info->timer));
 727         info->timer.function = &bluecard_activity_led_timeout;
 728         info->timer.data = (u_long)info;
 729
 730         skb_queue_head_init(&(info->txq));
 731
 732         info->rx_state = RECV_WAIT_PACKET_TYPE;
 733         info->rx_count = 0;
 734         info->rx_skb = NULL;
 735
 736         /* Initialize HCI device */
 737         hdev = hci_alloc_dev();
 738         if (!hdev) {
 739                 BT_ERR("Can't allocate HCI device");
 740                 return -ENOMEM;
 741         }
 742
 743         info->hdev = hdev;
 744
 745         hdev->type = HCI_PCCARD;
 746         hdev->driver_data = info;
 747
 748         hdev->open     = bluecard_hci_open;
 749         hdev->close    = bluecard_hci_close;
 750         hdev->flush    = bluecard_hci_flush;
 751         hdev->send     = bluecard_hci_send_frame;
 752         hdev->destruct = bluecard_hci_destruct;
 753         hdev->ioctl    = bluecard_hci_ioctl;
 754
 755         hdev->owner = THIS_MODULE;
 756
 757         id = inb(iobase + 0x30);
 758
 759         if ((id & 0x0f) == 0x02)
 760                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
 761
 762         if (id & 0x10)
 763                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
 764
 765         if (id & 0x20)
 766                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
 767
 768         /* Reset card */
 769         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 770         outb(info->ctrl_reg, iobase + REG_CONTROL);
 771
 772         /* Turn FPGA off */
 773         outb(0x80, iobase + 0x30);
 774
 775         /* Wait some time */
 776         msleep(10);
 777
 778         /* Turn FPGA on */
 779         outb(0x00, iobase + 0x30);
 780
 781         /* Activate card */
 782         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
 783         outb(info->ctrl_reg, iobase + REG_CONTROL);
 784
 785         /* Enable interrupt */
 786         outb(0xff, iobase + REG_INTERRUPT);
 787         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
 788         outb(info->ctrl_reg, iobase + REG_CONTROL);
 789
 790         if ((id & 0x0f) == 0x03) {
 791                 /* Disable RTS */
 792                 info->ctrl_reg |= REG_CONTROL_RTS;
 793                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 794
 795                 /* Set baud rate */
 796                 info->ctrl_reg |= 0x03;
 797                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 798
 799                 /* Enable RTS */
 800                 info->ctrl_reg &= ~REG_CONTROL_RTS;
 801                 outb(info->ctrl_reg, iobase + REG_CONTROL);
 802
 803                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
 804                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
 805                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
 806         }
 807
 808         /* Start the RX buffers */
 809         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
 810         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
 811
 812         /* Signal that the hardware is ready */
 813         set_bit(CARD_READY, &(info->hw_state));
 814
 815         /* Drop TX queue */
 816         skb_queue_purge(&(info->txq));
 817
 818         /* Control the point at which RTS is enabled */
 819         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
 820
 821         /* Timeout before it is safe to send the first HCI packet */
 822         msleep(1250);
 823
 824         /* Register HCI device */
 825         if (hci_register_dev(hdev) < 0) {
 826                 BT_ERR("Can't register HCI device");
 827                 info->hdev = NULL;
 828                 hci_free_dev(hdev);
 829                 return -ENODEV;
 830         }
 831
 832         return 0;
 833 }
 834
 835
 836 static int bluecard_close(bluecard_info_t *info)
 837 {
 838         unsigned int iobase = info->link.io.BasePort1;
 839         struct hci_dev *hdev = info->hdev;
 840
 841         if (!hdev)
 842                 return -ENODEV;
 843
 844         bluecard_hci_close(hdev);
 845
 846         clear_bit(CARD_READY, &(info->hw_state));
 847
 848         /* Reset card */
 849         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
 850         outb(info->ctrl_reg, iobase + REG_CONTROL);
 851
 852         /* Turn FPGA off */
 853         outb(0x80, iobase + 0x30);
 854
 855         if (hci_unregister_dev(hdev) < 0)
 856                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 857
 858         hci_free_dev(hdev);
 859
 860         return 0;
 861 }
 862
 863 static dev_link_t *bluecard_attach(void)
 864 {
 865         bluecard_info_t *info;
 866         client_reg_t client_reg;
 867         dev_link_t *link;
 868         int ret;
 869
 870         /* Create new info device */
 871         info = kzalloc(sizeof(*info), GFP_KERNEL);
 872         if (!info)
 873                 return NULL;
 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 = NULL;
 892         client_reg.dev_info = &dev_info;
 893         client_reg.Version = 0x0210;
 894         client_reg.event_callback_args.client_data = link;
 895
 896         ret = pcmcia_register_client(&link->handle, &client_reg);
 897         if (ret != CS_SUCCESS) {
 898                 cs_error(link->handle, RegisterClient, ret);
 899                 bluecard_detach(link->handle);
 900                 return NULL;
 901         }
 902
 903         return link;
 904 }
 905
 906
 907 static void bluecard_detach(struct pcmcia_device *p_dev)
 908 {
 909         dev_link_t *link = dev_to_instance(p_dev);
 910         bluecard_info_t *info = link->priv;
 911
 912         if (link->state & DEV_CONFIG)
 913                 bluecard_release(link);
 914
 915         kfree(info);
 916 }
 917
 918
 919 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 920 {
 921         int i;
 922
 923         i = pcmcia_get_first_tuple(handle, tuple);
 924         if (i != CS_SUCCESS)
 925                 return CS_NO_MORE_ITEMS;
 926
 927         i = pcmcia_get_tuple_data(handle, tuple);
 928         if (i != CS_SUCCESS)
 929                 return i;
 930
 931         return pcmcia_parse_tuple(handle, tuple, parse);
 932 }
 933
 934 static void bluecard_config(dev_link_t *link)
 935 {
 936         client_handle_t handle = link->handle;
 937         bluecard_info_t *info = link->priv;
 938         tuple_t tuple;
 939         u_short buf[256];
 940         cisparse_t parse;
 941         config_info_t config;
 942         int i, n, last_ret, last_fn;
 943
 944         tuple.TupleData = (cisdata_t *)buf;
 945         tuple.TupleOffset = 0;
 946         tuple.TupleDataMax = 255;
 947         tuple.Attributes = 0;
 948
 949         /* Get configuration register information */
 950         tuple.DesiredTuple = CISTPL_CONFIG;
 951         last_ret = first_tuple(handle, &tuple, &parse);
 952         if (last_ret != CS_SUCCESS) {
 953                 last_fn = ParseTuple;
 954                 goto cs_failed;
 955         }
 956         link->conf.ConfigBase = parse.config.base;
 957         link->conf.Present = parse.config.rmask[0];
 958
 959         /* Configure card */
 960         link->state |= DEV_CONFIG;
 961         i = pcmcia_get_configuration_info(handle, &config);
 962         link->conf.Vcc = config.Vcc;
 963
 964         link->conf.ConfigIndex = 0x20;
 965         link->io.NumPorts1 = 64;
 966         link->io.IOAddrLines = 6;
 967
 968         for (n = 0; n < 0x400; n += 0x40) {
 969                 link->io.BasePort1 = n ^ 0x300;
 970                 i = pcmcia_request_io(link->handle, &link->io);
 971                 if (i == CS_SUCCESS)
 972                         break;
 973         }
 974
 975         if (i != CS_SUCCESS) {
 976                 cs_error(link->handle, RequestIO, i);
 977                 goto failed;
 978         }
 979
 980         i = pcmcia_request_irq(link->handle, &link->irq);
 981         if (i != CS_SUCCESS) {
 982                 cs_error(link->handle, RequestIRQ, i);
 983                 link->irq.AssignedIRQ = 0;
 984         }
 985
 986         i = pcmcia_request_configuration(link->handle, &link->conf);
 987         if (i != CS_SUCCESS) {
 988                 cs_error(link->handle, RequestConfiguration, i);
 989                 goto failed;
 990         }
 991
 992         if (bluecard_open(info) != 0)
 993                 goto failed;
 994
 995         strcpy(info->node.dev_name, info->hdev->name);
 996         link->dev = &info->node;
 997         link->state &= ~DEV_CONFIG_PENDING;
 998
 999         return;
1000
1001 cs_failed:
1002         cs_error(link->handle, last_fn, last_ret);
1003
1004 failed:
1005         bluecard_release(link);
1006 }
1007
1008
1009 static void bluecard_release(dev_link_t *link)
1010 {
1011         bluecard_info_t *info = link->priv;
1012
1013         if (link->state & DEV_PRESENT)
1014                 bluecard_close(info);
1015
1016         del_timer(&(info->timer));
1017
1018         link->dev = NULL;
1019
1020         pcmcia_release_configuration(link->handle);
1021         pcmcia_release_io(link->handle, &link->io);
1022         pcmcia_release_irq(link->handle, &link->irq);
1023
1024         link->state &= ~DEV_CONFIG;
1025 }
1026
1027 static int bluecard_suspend(struct pcmcia_device *dev)
1028 {
1029         dev_link_t *link = dev_to_instance(dev);
1030
1031         link->state |= DEV_SUSPEND;
1032         if (link->state & DEV_CONFIG)
1033                 pcmcia_release_configuration(link->handle);
1034
1035         return 0;
1036 }
1037
1038 static int bluecard_resume(struct pcmcia_device *dev)
1039 {
1040         dev_link_t *link = dev_to_instance(dev);
1041
1042         link->state &= ~DEV_SUSPEND;
1043         if (DEV_OK(link))
1044                 pcmcia_request_configuration(link->handle, &link->conf);
1045
1046         return 0;
1047 }
1048
1049 static int bluecard_event(event_t event, int priority, event_callback_args_t *args)
1050 {
1051         dev_link_t *link = args->client_data;
1052
1053         switch (event) {
1054         case CS_EVENT_CARD_INSERTION:
1055                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
1056                 bluecard_config(link);
1057                 break;
1058         }
1059
1060         return 0;
1061 }
1062
1063 static struct pcmcia_device_id bluecard_ids[] = {
1064         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
1065         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
1066         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
1067         PCMCIA_DEVICE_NULL
1068 };
1069 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
1070
1071 static struct pcmcia_driver bluecard_driver = {
1072         .owner          = THIS_MODULE,
1073         .drv            = {
1074                 .name   = "bluecard_cs",
1075         },
1076         .attach         = bluecard_attach,
1077         .event          = bluecard_event,
1078         .remove         = bluecard_detach,
1079         .id_table       = bluecard_ids,
1080         .suspend        = bluecard_suspend,
1081         .resume         = bluecard_resume,
1082 };
1083
1084 static int __init init_bluecard_cs(void)
1085 {
1086         return pcmcia_register_driver(&bluecard_driver);
1087 }
1088
1089
1090 static void __exit exit_bluecard_cs(void)
1091 {
1092         pcmcia_unregister_driver(&bluecard_driver);
1093 }
1094
1095 module_init(init_bluecard_cs);
1096 module_exit(exit_bluecard_cs);