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/module.h> 24 25 #include <linux/kernel.h> 26 #include <linux/init.h> 27 #include <linux/slab.h> 28 #include <linux/types.h> 29 #include <linux/sched.h> 30 #include <linux/delay.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/moduleparam.h> 37 #include <linux/wait.h> 38 39 #include <linux/skbuff.h> 40 #include <linux/io.h> 41 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 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 56 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)"); 57 MODULE_LICENSE("GPL"); 58 59 60 61 /* ======================== Local structures ======================== */ 62 63 64 struct bluecard_info { 65 struct pcmcia_device *p_dev; 66 67 struct hci_dev *hdev; 68 69 spinlock_t lock; /* For serializing operations */ 70 struct timer_list timer; /* For LED control */ 71 72 struct sk_buff_head txq; 73 unsigned long tx_state; 74 75 unsigned long rx_state; 76 unsigned long rx_count; 77 struct sk_buff *rx_skb; 78 79 unsigned char ctrl_reg; 80 unsigned long hw_state; /* Status of the hardware and LED control */ 81 }; 82 83 84 static int bluecard_config(struct pcmcia_device *link); 85 static void bluecard_release(struct pcmcia_device *link); 86 87 static void bluecard_detach(struct pcmcia_device *p_dev); 88 89 90 /* Default baud rate: 57600, 115200, 230400 or 460800 */ 91 #define DEFAULT_BAUD_RATE 230400 92 93 94 /* Hardware states */ 95 #define CARD_READY 1 96 #define CARD_HAS_PCCARD_ID 4 97 #define CARD_HAS_POWER_LED 5 98 #define CARD_HAS_ACTIVITY_LED 6 99 100 /* Transmit states */ 101 #define XMIT_SENDING 1 102 #define XMIT_WAKEUP 2 103 #define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */ 104 #define XMIT_BUF_ONE_READY 6 105 #define XMIT_BUF_TWO_READY 7 106 #define XMIT_SENDING_READY 8 107 108 /* Receiver states */ 109 #define RECV_WAIT_PACKET_TYPE 0 110 #define RECV_WAIT_EVENT_HEADER 1 111 #define RECV_WAIT_ACL_HEADER 2 112 #define RECV_WAIT_SCO_HEADER 3 113 #define RECV_WAIT_DATA 4 114 115 /* Special packet types */ 116 #define PKT_BAUD_RATE_57600 0x80 117 #define PKT_BAUD_RATE_115200 0x81 118 #define PKT_BAUD_RATE_230400 0x82 119 #define PKT_BAUD_RATE_460800 0x83 120 121 122 /* These are the register offsets */ 123 #define REG_COMMAND 0x20 124 #define REG_INTERRUPT 0x21 125 #define REG_CONTROL 0x22 126 #define REG_RX_CONTROL 0x24 127 #define REG_CARD_RESET 0x30 128 #define REG_LED_CTRL 0x30 129 130 /* REG_COMMAND */ 131 #define REG_COMMAND_TX_BUF_ONE 0x01 132 #define REG_COMMAND_TX_BUF_TWO 0x02 133 #define REG_COMMAND_RX_BUF_ONE 0x04 134 #define REG_COMMAND_RX_BUF_TWO 0x08 135 #define REG_COMMAND_RX_WIN_ONE 0x00 136 #define REG_COMMAND_RX_WIN_TWO 0x10 137 138 /* REG_CONTROL */ 139 #define REG_CONTROL_BAUD_RATE_57600 0x00 140 #define REG_CONTROL_BAUD_RATE_115200 0x01 141 #define REG_CONTROL_BAUD_RATE_230400 0x02 142 #define REG_CONTROL_BAUD_RATE_460800 0x03 143 #define REG_CONTROL_RTS 0x04 144 #define REG_CONTROL_BT_ON 0x08 145 #define REG_CONTROL_BT_RESET 0x10 146 #define REG_CONTROL_BT_RES_PU 0x20 147 #define REG_CONTROL_INTERRUPT 0x40 148 #define REG_CONTROL_CARD_RESET 0x80 149 150 /* REG_RX_CONTROL */ 151 #define RTS_LEVEL_SHIFT_BITS 0x02 152 153 154 155 /* ======================== LED handling routines ======================== */ 156 157 158 static void bluecard_activity_led_timeout(u_long arg) 159 { 160 struct bluecard_info *info = (struct bluecard_info *)arg; 161 unsigned int iobase = info->p_dev->resource[0]->start; 162 163 if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) 164 return; 165 166 if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { 167 /* Disable activity LED */ 168 outb(0x08 | 0x20, iobase + 0x30); 169 } else { 170 /* Disable power LED */ 171 outb(0x00, iobase + 0x30); 172 } 173 } 174 175 176 static void bluecard_enable_activity_led(struct bluecard_info *info) 177 { 178 unsigned int iobase = info->p_dev->resource[0]->start; 179 180 if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) 181 return; 182 183 if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { 184 /* Enable activity LED */ 185 outb(0x10 | 0x40, iobase + 0x30); 186 187 /* Stop the LED after HZ/4 */ 188 mod_timer(&(info->timer), jiffies + HZ / 4); 189 } else { 190 /* Enable power LED */ 191 outb(0x08 | 0x20, iobase + 0x30); 192 193 /* Stop the LED after HZ/2 */ 194 mod_timer(&(info->timer), jiffies + HZ / 2); 195 } 196 } 197 198 199 200 /* ======================== Interrupt handling ======================== */ 201 202 203 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len) 204 { 205 int i, actual; 206 207 actual = (len > 15) ? 15 : len; 208 209 outb_p(actual, iobase + offset); 210 211 for (i = 0; i < actual; i++) 212 outb_p(buf[i], iobase + offset + i + 1); 213 214 return actual; 215 } 216 217 218 static void bluecard_write_wakeup(struct bluecard_info *info) 219 { 220 if (!info) { 221 BT_ERR("Unknown device"); 222 return; 223 } 224 225 if (!test_bit(XMIT_SENDING_READY, &(info->tx_state))) 226 return; 227 228 if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) { 229 set_bit(XMIT_WAKEUP, &(info->tx_state)); 230 return; 231 } 232 233 do { 234 unsigned int iobase = info->p_dev->resource[0]->start; 235 unsigned int offset; 236 unsigned char command; 237 unsigned long ready_bit; 238 register struct sk_buff *skb; 239 int len; 240 241 clear_bit(XMIT_WAKEUP, &(info->tx_state)); 242 243 if (!pcmcia_dev_present(info->p_dev)) 244 return; 245 246 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) { 247 if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state))) 248 break; 249 offset = 0x10; 250 command = REG_COMMAND_TX_BUF_TWO; 251 ready_bit = XMIT_BUF_TWO_READY; 252 } else { 253 if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state))) 254 break; 255 offset = 0x00; 256 command = REG_COMMAND_TX_BUF_ONE; 257 ready_bit = XMIT_BUF_ONE_READY; 258 } 259 260 skb = skb_dequeue(&(info->txq)); 261 if (!skb) 262 break; 263 264 if (hci_skb_pkt_type(skb) & 0x80) { 265 /* Disable RTS */ 266 info->ctrl_reg |= REG_CONTROL_RTS; 267 outb(info->ctrl_reg, iobase + REG_CONTROL); 268 } 269 270 /* Activate LED */ 271 bluecard_enable_activity_led(info); 272 273 /* Send frame */ 274 len = bluecard_write(iobase, offset, skb->data, skb->len); 275 276 /* Tell the FPGA to send the data */ 277 outb_p(command, iobase + REG_COMMAND); 278 279 /* Mark the buffer as dirty */ 280 clear_bit(ready_bit, &(info->tx_state)); 281 282 if (hci_skb_pkt_type(skb) & 0x80) { 283 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); 284 DEFINE_WAIT(wait); 285 286 unsigned char baud_reg; 287 288 switch (hci_skb_pkt_type(skb)) { 289 case PKT_BAUD_RATE_460800: 290 baud_reg = REG_CONTROL_BAUD_RATE_460800; 291 break; 292 case PKT_BAUD_RATE_230400: 293 baud_reg = REG_CONTROL_BAUD_RATE_230400; 294 break; 295 case PKT_BAUD_RATE_115200: 296 baud_reg = REG_CONTROL_BAUD_RATE_115200; 297 break; 298 case PKT_BAUD_RATE_57600: 299 /* Fall through... */ 300 default: 301 baud_reg = REG_CONTROL_BAUD_RATE_57600; 302 break; 303 } 304 305 /* Wait until the command reaches the baseband */ 306 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); 307 schedule_timeout(HZ/10); 308 finish_wait(&wq, &wait); 309 310 /* Set baud on baseband */ 311 info->ctrl_reg &= ~0x03; 312 info->ctrl_reg |= baud_reg; 313 outb(info->ctrl_reg, iobase + REG_CONTROL); 314 315 /* Enable RTS */ 316 info->ctrl_reg &= ~REG_CONTROL_RTS; 317 outb(info->ctrl_reg, iobase + REG_CONTROL); 318 319 /* Wait before the next HCI packet can be send */ 320 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); 321 schedule_timeout(HZ); 322 finish_wait(&wq, &wait); 323 } 324 325 if (len == skb->len) { 326 kfree_skb(skb); 327 } else { 328 skb_pull(skb, len); 329 skb_queue_head(&(info->txq), skb); 330 } 331 332 info->hdev->stat.byte_tx += len; 333 334 /* Change buffer */ 335 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state)); 336 337 } while (test_bit(XMIT_WAKEUP, &(info->tx_state))); 338 339 clear_bit(XMIT_SENDING, &(info->tx_state)); 340 } 341 342 343 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size) 344 { 345 int i, n, len; 346 347 outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND); 348 349 len = inb(iobase + offset); 350 n = 0; 351 i = 1; 352 353 while (n < len) { 354 355 if (i == 16) { 356 outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND); 357 i = 0; 358 } 359 360 buf[n] = inb(iobase + offset + i); 361 362 n++; 363 i++; 364 365 } 366 367 return len; 368 } 369 370 371 static void bluecard_receive(struct bluecard_info *info, 372 unsigned int offset) 373 { 374 unsigned int iobase; 375 unsigned char buf[31]; 376 int i, len; 377 378 if (!info) { 379 BT_ERR("Unknown device"); 380 return; 381 } 382 383 iobase = info->p_dev->resource[0]->start; 384 385 if (test_bit(XMIT_SENDING_READY, &(info->tx_state))) 386 bluecard_enable_activity_led(info); 387 388 len = bluecard_read(iobase, offset, buf, sizeof(buf)); 389 390 for (i = 0; i < len; i++) { 391 392 /* Allocate packet */ 393 if (!info->rx_skb) { 394 info->rx_state = RECV_WAIT_PACKET_TYPE; 395 info->rx_count = 0; 396 info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 397 if (!info->rx_skb) { 398 BT_ERR("Can't allocate mem for new packet"); 399 return; 400 } 401 } 402 403 if (info->rx_state == RECV_WAIT_PACKET_TYPE) { 404 405 hci_skb_pkt_type(info->rx_skb) = buf[i]; 406 407 switch (hci_skb_pkt_type(info->rx_skb)) { 408 409 case 0x00: 410 /* init packet */ 411 if (offset != 0x00) { 412 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); 413 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); 414 set_bit(XMIT_SENDING_READY, &(info->tx_state)); 415 bluecard_write_wakeup(info); 416 } 417 418 kfree_skb(info->rx_skb); 419 info->rx_skb = NULL; 420 break; 421 422 case HCI_EVENT_PKT: 423 info->rx_state = RECV_WAIT_EVENT_HEADER; 424 info->rx_count = HCI_EVENT_HDR_SIZE; 425 break; 426 427 case HCI_ACLDATA_PKT: 428 info->rx_state = RECV_WAIT_ACL_HEADER; 429 info->rx_count = HCI_ACL_HDR_SIZE; 430 break; 431 432 case HCI_SCODATA_PKT: 433 info->rx_state = RECV_WAIT_SCO_HEADER; 434 info->rx_count = HCI_SCO_HDR_SIZE; 435 break; 436 437 default: 438 /* unknown packet */ 439 BT_ERR("Unknown HCI packet with type 0x%02x received", 440 hci_skb_pkt_type(info->rx_skb)); 441 info->hdev->stat.err_rx++; 442 443 kfree_skb(info->rx_skb); 444 info->rx_skb = NULL; 445 break; 446 447 } 448 449 } else { 450 451 skb_put_u8(info->rx_skb, buf[i]); 452 info->rx_count--; 453 454 if (info->rx_count == 0) { 455 456 int dlen; 457 struct hci_event_hdr *eh; 458 struct hci_acl_hdr *ah; 459 struct hci_sco_hdr *sh; 460 461 switch (info->rx_state) { 462 463 case RECV_WAIT_EVENT_HEADER: 464 eh = hci_event_hdr(info->rx_skb); 465 info->rx_state = RECV_WAIT_DATA; 466 info->rx_count = eh->plen; 467 break; 468 469 case RECV_WAIT_ACL_HEADER: 470 ah = hci_acl_hdr(info->rx_skb); 471 dlen = __le16_to_cpu(ah->dlen); 472 info->rx_state = RECV_WAIT_DATA; 473 info->rx_count = dlen; 474 break; 475 476 case RECV_WAIT_SCO_HEADER: 477 sh = hci_sco_hdr(info->rx_skb); 478 info->rx_state = RECV_WAIT_DATA; 479 info->rx_count = sh->dlen; 480 break; 481 482 case RECV_WAIT_DATA: 483 hci_recv_frame(info->hdev, info->rx_skb); 484 info->rx_skb = NULL; 485 break; 486 487 } 488 489 } 490 491 } 492 493 494 } 495 496 info->hdev->stat.byte_rx += len; 497 } 498 499 500 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst) 501 { 502 struct bluecard_info *info = dev_inst; 503 unsigned int iobase; 504 unsigned char reg; 505 506 if (!info || !info->hdev) 507 /* our irq handler is shared */ 508 return IRQ_NONE; 509 510 if (!test_bit(CARD_READY, &(info->hw_state))) 511 return IRQ_HANDLED; 512 513 iobase = info->p_dev->resource[0]->start; 514 515 spin_lock(&(info->lock)); 516 517 /* Disable interrupt */ 518 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; 519 outb(info->ctrl_reg, iobase + REG_CONTROL); 520 521 reg = inb(iobase + REG_INTERRUPT); 522 523 if ((reg != 0x00) && (reg != 0xff)) { 524 525 if (reg & 0x04) { 526 bluecard_receive(info, 0x00); 527 outb(0x04, iobase + REG_INTERRUPT); 528 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); 529 } 530 531 if (reg & 0x08) { 532 bluecard_receive(info, 0x10); 533 outb(0x08, iobase + REG_INTERRUPT); 534 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); 535 } 536 537 if (reg & 0x01) { 538 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); 539 outb(0x01, iobase + REG_INTERRUPT); 540 bluecard_write_wakeup(info); 541 } 542 543 if (reg & 0x02) { 544 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); 545 outb(0x02, iobase + REG_INTERRUPT); 546 bluecard_write_wakeup(info); 547 } 548 549 } 550 551 /* Enable interrupt */ 552 info->ctrl_reg |= REG_CONTROL_INTERRUPT; 553 outb(info->ctrl_reg, iobase + REG_CONTROL); 554 555 spin_unlock(&(info->lock)); 556 557 return IRQ_HANDLED; 558 } 559 560 561 562 /* ======================== Device specific HCI commands ======================== */ 563 564 565 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) 566 { 567 struct bluecard_info *info = hci_get_drvdata(hdev); 568 struct sk_buff *skb; 569 570 /* Ericsson baud rate command */ 571 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; 572 573 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 574 if (!skb) { 575 BT_ERR("Can't allocate mem for new packet"); 576 return -1; 577 } 578 579 switch (baud) { 580 case 460800: 581 cmd[4] = 0x00; 582 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800; 583 break; 584 case 230400: 585 cmd[4] = 0x01; 586 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400; 587 break; 588 case 115200: 589 cmd[4] = 0x02; 590 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200; 591 break; 592 case 57600: 593 /* Fall through... */ 594 default: 595 cmd[4] = 0x03; 596 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600; 597 break; 598 } 599 600 skb_put_data(skb, 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 struct bluecard_info *info = hci_get_drvdata(hdev); 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 struct bluecard_info *info = hci_get_drvdata(hdev); 628 629 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) 630 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); 631 632 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { 633 unsigned int iobase = info->p_dev->resource[0]->start; 634 635 /* Enable LED */ 636 outb(0x08 | 0x20, iobase + 0x30); 637 } 638 639 return 0; 640 } 641 642 643 static int bluecard_hci_close(struct hci_dev *hdev) 644 { 645 struct bluecard_info *info = hci_get_drvdata(hdev); 646 647 bluecard_hci_flush(hdev); 648 649 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { 650 unsigned int iobase = info->p_dev->resource[0]->start; 651 652 /* Disable LED */ 653 outb(0x00, iobase + 0x30); 654 } 655 656 return 0; 657 } 658 659 660 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 661 { 662 struct bluecard_info *info = hci_get_drvdata(hdev); 663 664 switch (hci_skb_pkt_type(skb)) { 665 case HCI_COMMAND_PKT: 666 hdev->stat.cmd_tx++; 667 break; 668 case HCI_ACLDATA_PKT: 669 hdev->stat.acl_tx++; 670 break; 671 case HCI_SCODATA_PKT: 672 hdev->stat.sco_tx++; 673 break; 674 } 675 676 /* Prepend skb with frame type */ 677 memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); 678 skb_queue_tail(&(info->txq), skb); 679 680 bluecard_write_wakeup(info); 681 682 return 0; 683 } 684 685 686 687 /* ======================== Card services HCI interaction ======================== */ 688 689 690 static int bluecard_open(struct bluecard_info *info) 691 { 692 unsigned int iobase = info->p_dev->resource[0]->start; 693 struct hci_dev *hdev; 694 unsigned char id; 695 696 spin_lock_init(&(info->lock)); 697 698 setup_timer(&(info->timer), &bluecard_activity_led_timeout, 699 (u_long)info); 700 701 skb_queue_head_init(&(info->txq)); 702 703 info->rx_state = RECV_WAIT_PACKET_TYPE; 704 info->rx_count = 0; 705 info->rx_skb = NULL; 706 707 /* Initialize HCI device */ 708 hdev = hci_alloc_dev(); 709 if (!hdev) { 710 BT_ERR("Can't allocate HCI device"); 711 return -ENOMEM; 712 } 713 714 info->hdev = hdev; 715 716 hdev->bus = HCI_PCCARD; 717 hci_set_drvdata(hdev, info); 718 SET_HCIDEV_DEV(hdev, &info->p_dev->dev); 719 720 hdev->open = bluecard_hci_open; 721 hdev->close = bluecard_hci_close; 722 hdev->flush = bluecard_hci_flush; 723 hdev->send = bluecard_hci_send_frame; 724 725 id = inb(iobase + 0x30); 726 727 if ((id & 0x0f) == 0x02) 728 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); 729 730 if (id & 0x10) 731 set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); 732 733 if (id & 0x20) 734 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); 735 736 /* Reset card */ 737 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; 738 outb(info->ctrl_reg, iobase + REG_CONTROL); 739 740 /* Turn FPGA off */ 741 outb(0x80, iobase + 0x30); 742 743 /* Wait some time */ 744 msleep(10); 745 746 /* Turn FPGA on */ 747 outb(0x00, iobase + 0x30); 748 749 /* Activate card */ 750 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; 751 outb(info->ctrl_reg, iobase + REG_CONTROL); 752 753 /* Enable interrupt */ 754 outb(0xff, iobase + REG_INTERRUPT); 755 info->ctrl_reg |= REG_CONTROL_INTERRUPT; 756 outb(info->ctrl_reg, iobase + REG_CONTROL); 757 758 if ((id & 0x0f) == 0x03) { 759 /* Disable RTS */ 760 info->ctrl_reg |= REG_CONTROL_RTS; 761 outb(info->ctrl_reg, iobase + REG_CONTROL); 762 763 /* Set baud rate */ 764 info->ctrl_reg |= 0x03; 765 outb(info->ctrl_reg, iobase + REG_CONTROL); 766 767 /* Enable RTS */ 768 info->ctrl_reg &= ~REG_CONTROL_RTS; 769 outb(info->ctrl_reg, iobase + REG_CONTROL); 770 771 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); 772 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); 773 set_bit(XMIT_SENDING_READY, &(info->tx_state)); 774 } 775 776 /* Start the RX buffers */ 777 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); 778 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); 779 780 /* Signal that the hardware is ready */ 781 set_bit(CARD_READY, &(info->hw_state)); 782 783 /* Drop TX queue */ 784 skb_queue_purge(&(info->txq)); 785 786 /* Control the point at which RTS is enabled */ 787 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); 788 789 /* Timeout before it is safe to send the first HCI packet */ 790 msleep(1250); 791 792 /* Register HCI device */ 793 if (hci_register_dev(hdev) < 0) { 794 BT_ERR("Can't register HCI device"); 795 info->hdev = NULL; 796 hci_free_dev(hdev); 797 return -ENODEV; 798 } 799 800 return 0; 801 } 802 803 804 static int bluecard_close(struct bluecard_info *info) 805 { 806 unsigned int iobase = info->p_dev->resource[0]->start; 807 struct hci_dev *hdev = info->hdev; 808 809 if (!hdev) 810 return -ENODEV; 811 812 bluecard_hci_close(hdev); 813 814 clear_bit(CARD_READY, &(info->hw_state)); 815 816 /* Reset card */ 817 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; 818 outb(info->ctrl_reg, iobase + REG_CONTROL); 819 820 /* Turn FPGA off */ 821 outb(0x80, iobase + 0x30); 822 823 hci_unregister_dev(hdev); 824 hci_free_dev(hdev); 825 826 return 0; 827 } 828 829 static int bluecard_probe(struct pcmcia_device *link) 830 { 831 struct bluecard_info *info; 832 833 /* Create new info device */ 834 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL); 835 if (!info) 836 return -ENOMEM; 837 838 info->p_dev = link; 839 link->priv = info; 840 841 link->config_flags |= CONF_ENABLE_IRQ; 842 843 return bluecard_config(link); 844 } 845 846 847 static void bluecard_detach(struct pcmcia_device *link) 848 { 849 bluecard_release(link); 850 } 851 852 853 static int bluecard_config(struct pcmcia_device *link) 854 { 855 struct bluecard_info *info = link->priv; 856 int i, n; 857 858 link->config_index = 0x20; 859 860 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; 861 link->resource[0]->end = 64; 862 link->io_lines = 6; 863 864 for (n = 0; n < 0x400; n += 0x40) { 865 link->resource[0]->start = n ^ 0x300; 866 i = pcmcia_request_io(link); 867 if (i == 0) 868 break; 869 } 870 871 if (i != 0) 872 goto failed; 873 874 i = pcmcia_request_irq(link, bluecard_interrupt); 875 if (i != 0) 876 goto failed; 877 878 i = pcmcia_enable_device(link); 879 if (i != 0) 880 goto failed; 881 882 if (bluecard_open(info) != 0) 883 goto failed; 884 885 return 0; 886 887 failed: 888 bluecard_release(link); 889 return -ENODEV; 890 } 891 892 893 static void bluecard_release(struct pcmcia_device *link) 894 { 895 struct bluecard_info *info = link->priv; 896 897 bluecard_close(info); 898 899 del_timer_sync(&(info->timer)); 900 901 pcmcia_disable_device(link); 902 } 903 904 static const struct pcmcia_device_id bluecard_ids[] = { 905 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), 906 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), 907 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), 908 PCMCIA_DEVICE_NULL 909 }; 910 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); 911 912 static struct pcmcia_driver bluecard_driver = { 913 .owner = THIS_MODULE, 914 .name = "bluecard_cs", 915 .probe = bluecard_probe, 916 .remove = bluecard_detach, 917 .id_table = bluecard_ids, 918 }; 919 module_pcmcia_driver(bluecard_driver); 920