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 55MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 56MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)"); 57MODULE_LICENSE("GPL"); 58 59 60 61/* ======================== Local structures ======================== */ 62 63 64struct 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 84static int bluecard_config(struct pcmcia_device *link); 85static void bluecard_release(struct pcmcia_device *link); 86 87static 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 158static 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 176static 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 203static 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 218static 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 (bt_cb(skb)->pkt_type & 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 (bt_cb(skb)->pkt_type & 0x80) { 283 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); 284 DEFINE_WAIT(wait); 285 286 unsigned char baud_reg; 287 288 switch (bt_cb(skb)->pkt_type) { 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 343static 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 371static 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 == NULL) { 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 bt_cb(info->rx_skb)->pkt_type = buf[i]; 406 407 switch (bt_cb(info->rx_skb)->pkt_type) { 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", bt_cb(info->rx_skb)->pkt_type); 440 info->hdev->stat.err_rx++; 441 442 kfree_skb(info->rx_skb); 443 info->rx_skb = NULL; 444 break; 445 446 } 447 448 } else { 449 450 *skb_put(info->rx_skb, 1) = buf[i]; 451 info->rx_count--; 452 453 if (info->rx_count == 0) { 454 455 int dlen; 456 struct hci_event_hdr *eh; 457 struct hci_acl_hdr *ah; 458 struct hci_sco_hdr *sh; 459 460 switch (info->rx_state) { 461 462 case RECV_WAIT_EVENT_HEADER: 463 eh = hci_event_hdr(info->rx_skb); 464 info->rx_state = RECV_WAIT_DATA; 465 info->rx_count = eh->plen; 466 break; 467 468 case RECV_WAIT_ACL_HEADER: 469 ah = hci_acl_hdr(info->rx_skb); 470 dlen = __le16_to_cpu(ah->dlen); 471 info->rx_state = RECV_WAIT_DATA; 472 info->rx_count = dlen; 473 break; 474 475 case RECV_WAIT_SCO_HEADER: 476 sh = hci_sco_hdr(info->rx_skb); 477 info->rx_state = RECV_WAIT_DATA; 478 info->rx_count = sh->dlen; 479 break; 480 481 case RECV_WAIT_DATA: 482 hci_recv_frame(info->hdev, info->rx_skb); 483 info->rx_skb = NULL; 484 break; 485 486 } 487 488 } 489 490 } 491 492 493 } 494 495 info->hdev->stat.byte_rx += len; 496} 497 498 499static irqreturn_t bluecard_interrupt(int irq, void *dev_inst) 500{ 501 struct bluecard_info *info = dev_inst; 502 unsigned int iobase; 503 unsigned char reg; 504 505 if (!info || !info->hdev) 506 /* our irq handler is shared */ 507 return IRQ_NONE; 508 509 if (!test_bit(CARD_READY, &(info->hw_state))) 510 return IRQ_HANDLED; 511 512 iobase = info->p_dev->resource[0]->start; 513 514 spin_lock(&(info->lock)); 515 516 /* Disable interrupt */ 517 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; 518 outb(info->ctrl_reg, iobase + REG_CONTROL); 519 520 reg = inb(iobase + REG_INTERRUPT); 521 522 if ((reg != 0x00) && (reg != 0xff)) { 523 524 if (reg & 0x04) { 525 bluecard_receive(info, 0x00); 526 outb(0x04, iobase + REG_INTERRUPT); 527 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); 528 } 529 530 if (reg & 0x08) { 531 bluecard_receive(info, 0x10); 532 outb(0x08, iobase + REG_INTERRUPT); 533 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); 534 } 535 536 if (reg & 0x01) { 537 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); 538 outb(0x01, iobase + REG_INTERRUPT); 539 bluecard_write_wakeup(info); 540 } 541 542 if (reg & 0x02) { 543 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); 544 outb(0x02, iobase + REG_INTERRUPT); 545 bluecard_write_wakeup(info); 546 } 547 548 } 549 550 /* Enable interrupt */ 551 info->ctrl_reg |= REG_CONTROL_INTERRUPT; 552 outb(info->ctrl_reg, iobase + REG_CONTROL); 553 554 spin_unlock(&(info->lock)); 555 556 return IRQ_HANDLED; 557} 558 559 560 561/* ======================== Device specific HCI commands ======================== */ 562 563 564static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) 565{ 566 struct bluecard_info *info = hci_get_drvdata(hdev); 567 struct sk_buff *skb; 568 569 /* Ericsson baud rate command */ 570 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; 571 572 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 573 if (!skb) { 574 BT_ERR("Can't allocate mem for new packet"); 575 return -1; 576 } 577 578 switch (baud) { 579 case 460800: 580 cmd[4] = 0x00; 581 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800; 582 break; 583 case 230400: 584 cmd[4] = 0x01; 585 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400; 586 break; 587 case 115200: 588 cmd[4] = 0x02; 589 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200; 590 break; 591 case 57600: 592 /* Fall through... */ 593 default: 594 cmd[4] = 0x03; 595 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600; 596 break; 597 } 598 599 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 600 601 skb_queue_tail(&(info->txq), skb); 602 603 bluecard_write_wakeup(info); 604 605 return 0; 606} 607 608 609 610/* ======================== HCI interface ======================== */ 611 612 613static int bluecard_hci_flush(struct hci_dev *hdev) 614{ 615 struct bluecard_info *info = hci_get_drvdata(hdev); 616 617 /* Drop TX queue */ 618 skb_queue_purge(&(info->txq)); 619 620 return 0; 621} 622 623 624static int bluecard_hci_open(struct hci_dev *hdev) 625{ 626 struct bluecard_info *info = hci_get_drvdata(hdev); 627 628 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) 629 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); 630 631 if (test_and_set_bit(HCI_RUNNING, &(hdev->flags))) 632 return 0; 633 634 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { 635 unsigned int iobase = info->p_dev->resource[0]->start; 636 637 /* Enable LED */ 638 outb(0x08 | 0x20, iobase + 0x30); 639 } 640 641 return 0; 642} 643 644 645static int bluecard_hci_close(struct hci_dev *hdev) 646{ 647 struct bluecard_info *info = hci_get_drvdata(hdev); 648 649 if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) 650 return 0; 651 652 bluecard_hci_flush(hdev); 653 654 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { 655 unsigned int iobase = info->p_dev->resource[0]->start; 656 657 /* Disable LED */ 658 outb(0x00, iobase + 0x30); 659 } 660 661 return 0; 662} 663 664 665static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 666{ 667 struct bluecard_info *info = hci_get_drvdata(hdev); 668 669 switch (bt_cb(skb)->pkt_type) { 670 case HCI_COMMAND_PKT: 671 hdev->stat.cmd_tx++; 672 break; 673 case HCI_ACLDATA_PKT: 674 hdev->stat.acl_tx++; 675 break; 676 case HCI_SCODATA_PKT: 677 hdev->stat.sco_tx++; 678 break; 679 } 680 681 /* Prepend skb with frame type */ 682 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); 683 skb_queue_tail(&(info->txq), skb); 684 685 bluecard_write_wakeup(info); 686 687 return 0; 688} 689 690 691 692/* ======================== Card services HCI interaction ======================== */ 693 694 695static int bluecard_open(struct bluecard_info *info) 696{ 697 unsigned int iobase = info->p_dev->resource[0]->start; 698 struct hci_dev *hdev; 699 unsigned char id; 700 701 spin_lock_init(&(info->lock)); 702 703 init_timer(&(info->timer)); 704 info->timer.function = &bluecard_activity_led_timeout; 705 info->timer.data = (u_long)info; 706 707 skb_queue_head_init(&(info->txq)); 708 709 info->rx_state = RECV_WAIT_PACKET_TYPE; 710 info->rx_count = 0; 711 info->rx_skb = NULL; 712 713 /* Initialize HCI device */ 714 hdev = hci_alloc_dev(); 715 if (!hdev) { 716 BT_ERR("Can't allocate HCI device"); 717 return -ENOMEM; 718 } 719 720 info->hdev = hdev; 721 722 hdev->bus = HCI_PCCARD; 723 hci_set_drvdata(hdev, info); 724 SET_HCIDEV_DEV(hdev, &info->p_dev->dev); 725 726 hdev->open = bluecard_hci_open; 727 hdev->close = bluecard_hci_close; 728 hdev->flush = bluecard_hci_flush; 729 hdev->send = bluecard_hci_send_frame; 730 731 id = inb(iobase + 0x30); 732 733 if ((id & 0x0f) == 0x02) 734 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); 735 736 if (id & 0x10) 737 set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); 738 739 if (id & 0x20) 740 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); 741 742 /* Reset card */ 743 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; 744 outb(info->ctrl_reg, iobase + REG_CONTROL); 745 746 /* Turn FPGA off */ 747 outb(0x80, iobase + 0x30); 748 749 /* Wait some time */ 750 msleep(10); 751 752 /* Turn FPGA on */ 753 outb(0x00, iobase + 0x30); 754 755 /* Activate card */ 756 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; 757 outb(info->ctrl_reg, iobase + REG_CONTROL); 758 759 /* Enable interrupt */ 760 outb(0xff, iobase + REG_INTERRUPT); 761 info->ctrl_reg |= REG_CONTROL_INTERRUPT; 762 outb(info->ctrl_reg, iobase + REG_CONTROL); 763 764 if ((id & 0x0f) == 0x03) { 765 /* Disable RTS */ 766 info->ctrl_reg |= REG_CONTROL_RTS; 767 outb(info->ctrl_reg, iobase + REG_CONTROL); 768 769 /* Set baud rate */ 770 info->ctrl_reg |= 0x03; 771 outb(info->ctrl_reg, iobase + REG_CONTROL); 772 773 /* Enable RTS */ 774 info->ctrl_reg &= ~REG_CONTROL_RTS; 775 outb(info->ctrl_reg, iobase + REG_CONTROL); 776 777 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); 778 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); 779 set_bit(XMIT_SENDING_READY, &(info->tx_state)); 780 } 781 782 /* Start the RX buffers */ 783 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); 784 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); 785 786 /* Signal that the hardware is ready */ 787 set_bit(CARD_READY, &(info->hw_state)); 788 789 /* Drop TX queue */ 790 skb_queue_purge(&(info->txq)); 791 792 /* Control the point at which RTS is enabled */ 793 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); 794 795 /* Timeout before it is safe to send the first HCI packet */ 796 msleep(1250); 797 798 /* Register HCI device */ 799 if (hci_register_dev(hdev) < 0) { 800 BT_ERR("Can't register HCI device"); 801 info->hdev = NULL; 802 hci_free_dev(hdev); 803 return -ENODEV; 804 } 805 806 return 0; 807} 808 809 810static int bluecard_close(struct bluecard_info *info) 811{ 812 unsigned int iobase = info->p_dev->resource[0]->start; 813 struct hci_dev *hdev = info->hdev; 814 815 if (!hdev) 816 return -ENODEV; 817 818 bluecard_hci_close(hdev); 819 820 clear_bit(CARD_READY, &(info->hw_state)); 821 822 /* Reset card */ 823 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; 824 outb(info->ctrl_reg, iobase + REG_CONTROL); 825 826 /* Turn FPGA off */ 827 outb(0x80, iobase + 0x30); 828 829 hci_unregister_dev(hdev); 830 hci_free_dev(hdev); 831 832 return 0; 833} 834 835static int bluecard_probe(struct pcmcia_device *link) 836{ 837 struct bluecard_info *info; 838 839 /* Create new info device */ 840 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL); 841 if (!info) 842 return -ENOMEM; 843 844 info->p_dev = link; 845 link->priv = info; 846 847 link->config_flags |= CONF_ENABLE_IRQ; 848 849 return bluecard_config(link); 850} 851 852 853static void bluecard_detach(struct pcmcia_device *link) 854{ 855 bluecard_release(link); 856} 857 858 859static int bluecard_config(struct pcmcia_device *link) 860{ 861 struct bluecard_info *info = link->priv; 862 int i, n; 863 864 link->config_index = 0x20; 865 866 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; 867 link->resource[0]->end = 64; 868 link->io_lines = 6; 869 870 for (n = 0; n < 0x400; n += 0x40) { 871 link->resource[0]->start = n ^ 0x300; 872 i = pcmcia_request_io(link); 873 if (i == 0) 874 break; 875 } 876 877 if (i != 0) 878 goto failed; 879 880 i = pcmcia_request_irq(link, bluecard_interrupt); 881 if (i != 0) 882 goto failed; 883 884 i = pcmcia_enable_device(link); 885 if (i != 0) 886 goto failed; 887 888 if (bluecard_open(info) != 0) 889 goto failed; 890 891 return 0; 892 893failed: 894 bluecard_release(link); 895 return -ENODEV; 896} 897 898 899static void bluecard_release(struct pcmcia_device *link) 900{ 901 struct bluecard_info *info = link->priv; 902 903 bluecard_close(info); 904 905 del_timer_sync(&(info->timer)); 906 907 pcmcia_disable_device(link); 908} 909 910static const struct pcmcia_device_id bluecard_ids[] = { 911 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), 912 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), 913 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), 914 PCMCIA_DEVICE_NULL 915}; 916MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); 917 918static struct pcmcia_driver bluecard_driver = { 919 .owner = THIS_MODULE, 920 .name = "bluecard_cs", 921 .probe = bluecard_probe, 922 .remove = bluecard_detach, 923 .id_table = bluecard_ids, 924}; 925module_pcmcia_driver(bluecard_driver); 926