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 typedef struct bluecard_info_t { 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 } bluecard_info_t; 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 bluecard_info_t *info = (bluecard_info_t *)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(bluecard_info_t *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(bluecard_info_t *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 } 341 342 343 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(bluecard_info_t *info, unsigned int offset) 372 { 373 unsigned int iobase; 374 unsigned char buf[31]; 375 int i, len; 376 377 if (!info) { 378 BT_ERR("Unknown device"); 379 return; 380 } 381 382 iobase = info->p_dev->resource[0]->start; 383 384 if (test_bit(XMIT_SENDING_READY, &(info->tx_state))) 385 bluecard_enable_activity_led(info); 386 387 len = bluecard_read(iobase, offset, buf, sizeof(buf)); 388 389 for (i = 0; i < len; i++) { 390 391 /* Allocate packet */ 392 if (info->rx_skb == NULL) { 393 info->rx_state = RECV_WAIT_PACKET_TYPE; 394 info->rx_count = 0; 395 info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 396 if (!info->rx_skb) { 397 BT_ERR("Can't allocate mem for new packet"); 398 return; 399 } 400 } 401 402 if (info->rx_state == RECV_WAIT_PACKET_TYPE) { 403 404 bt_cb(info->rx_skb)->pkt_type = buf[i]; 405 406 switch (bt_cb(info->rx_skb)->pkt_type) { 407 408 case 0x00: 409 /* init packet */ 410 if (offset != 0x00) { 411 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); 412 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); 413 set_bit(XMIT_SENDING_READY, &(info->tx_state)); 414 bluecard_write_wakeup(info); 415 } 416 417 kfree_skb(info->rx_skb); 418 info->rx_skb = NULL; 419 break; 420 421 case HCI_EVENT_PKT: 422 info->rx_state = RECV_WAIT_EVENT_HEADER; 423 info->rx_count = HCI_EVENT_HDR_SIZE; 424 break; 425 426 case HCI_ACLDATA_PKT: 427 info->rx_state = RECV_WAIT_ACL_HEADER; 428 info->rx_count = HCI_ACL_HDR_SIZE; 429 break; 430 431 case HCI_SCODATA_PKT: 432 info->rx_state = RECV_WAIT_SCO_HEADER; 433 info->rx_count = HCI_SCO_HDR_SIZE; 434 break; 435 436 default: 437 /* unknown packet */ 438 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); 439 info->hdev->stat.err_rx++; 440 441 kfree_skb(info->rx_skb); 442 info->rx_skb = NULL; 443 break; 444 445 } 446 447 } else { 448 449 *skb_put(info->rx_skb, 1) = buf[i]; 450 info->rx_count--; 451 452 if (info->rx_count == 0) { 453 454 int dlen; 455 struct hci_event_hdr *eh; 456 struct hci_acl_hdr *ah; 457 struct hci_sco_hdr *sh; 458 459 switch (info->rx_state) { 460 461 case RECV_WAIT_EVENT_HEADER: 462 eh = hci_event_hdr(info->rx_skb); 463 info->rx_state = RECV_WAIT_DATA; 464 info->rx_count = eh->plen; 465 break; 466 467 case RECV_WAIT_ACL_HEADER: 468 ah = hci_acl_hdr(info->rx_skb); 469 dlen = __le16_to_cpu(ah->dlen); 470 info->rx_state = RECV_WAIT_DATA; 471 info->rx_count = dlen; 472 break; 473 474 case RECV_WAIT_SCO_HEADER: 475 sh = hci_sco_hdr(info->rx_skb); 476 info->rx_state = RECV_WAIT_DATA; 477 info->rx_count = sh->dlen; 478 break; 479 480 case RECV_WAIT_DATA: 481 hci_recv_frame(info->hdev, info->rx_skb); 482 info->rx_skb = NULL; 483 break; 484 485 } 486 487 } 488 489 } 490 491 492 } 493 494 info->hdev->stat.byte_rx += len; 495 } 496 497 498 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst) 499 { 500 bluecard_info_t *info = dev_inst; 501 unsigned int iobase; 502 unsigned char reg; 503 504 if (!info || !info->hdev) 505 /* our irq handler is shared */ 506 return IRQ_NONE; 507 508 if (!test_bit(CARD_READY, &(info->hw_state))) 509 return IRQ_HANDLED; 510 511 iobase = info->p_dev->resource[0]->start; 512 513 spin_lock(&(info->lock)); 514 515 /* Disable interrupt */ 516 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; 517 outb(info->ctrl_reg, iobase + REG_CONTROL); 518 519 reg = inb(iobase + REG_INTERRUPT); 520 521 if ((reg != 0x00) && (reg != 0xff)) { 522 523 if (reg & 0x04) { 524 bluecard_receive(info, 0x00); 525 outb(0x04, iobase + REG_INTERRUPT); 526 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); 527 } 528 529 if (reg & 0x08) { 530 bluecard_receive(info, 0x10); 531 outb(0x08, iobase + REG_INTERRUPT); 532 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); 533 } 534 535 if (reg & 0x01) { 536 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); 537 outb(0x01, iobase + REG_INTERRUPT); 538 bluecard_write_wakeup(info); 539 } 540 541 if (reg & 0x02) { 542 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); 543 outb(0x02, iobase + REG_INTERRUPT); 544 bluecard_write_wakeup(info); 545 } 546 547 } 548 549 /* Enable interrupt */ 550 info->ctrl_reg |= REG_CONTROL_INTERRUPT; 551 outb(info->ctrl_reg, iobase + REG_CONTROL); 552 553 spin_unlock(&(info->lock)); 554 555 return IRQ_HANDLED; 556 } 557 558 559 560 /* ======================== Device specific HCI commands ======================== */ 561 562 563 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) 564 { 565 bluecard_info_t *info = hci_get_drvdata(hdev); 566 struct sk_buff *skb; 567 568 /* Ericsson baud rate command */ 569 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; 570 571 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 572 if (!skb) { 573 BT_ERR("Can't allocate mem for new packet"); 574 return -1; 575 } 576 577 switch (baud) { 578 case 460800: 579 cmd[4] = 0x00; 580 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800; 581 break; 582 case 230400: 583 cmd[4] = 0x01; 584 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400; 585 break; 586 case 115200: 587 cmd[4] = 0x02; 588 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200; 589 break; 590 case 57600: 591 /* Fall through... */ 592 default: 593 cmd[4] = 0x03; 594 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600; 595 break; 596 } 597 598 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 599 600 skb_queue_tail(&(info->txq), skb); 601 602 bluecard_write_wakeup(info); 603 604 return 0; 605 } 606 607 608 609 /* ======================== HCI interface ======================== */ 610 611 612 static int bluecard_hci_flush(struct hci_dev *hdev) 613 { 614 bluecard_info_t *info = hci_get_drvdata(hdev); 615 616 /* Drop TX queue */ 617 skb_queue_purge(&(info->txq)); 618 619 return 0; 620 } 621 622 623 static int bluecard_hci_open(struct hci_dev *hdev) 624 { 625 bluecard_info_t *info = hci_get_drvdata(hdev); 626 627 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) 628 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); 629 630 if (test_and_set_bit(HCI_RUNNING, &(hdev->flags))) 631 return 0; 632 633 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { 634 unsigned int iobase = info->p_dev->resource[0]->start; 635 636 /* Enable LED */ 637 outb(0x08 | 0x20, iobase + 0x30); 638 } 639 640 return 0; 641 } 642 643 644 static int bluecard_hci_close(struct hci_dev *hdev) 645 { 646 bluecard_info_t *info = hci_get_drvdata(hdev); 647 648 if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) 649 return 0; 650 651 bluecard_hci_flush(hdev); 652 653 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { 654 unsigned int iobase = info->p_dev->resource[0]->start; 655 656 /* Disable LED */ 657 outb(0x00, iobase + 0x30); 658 } 659 660 return 0; 661 } 662 663 664 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 665 { 666 bluecard_info_t *info = hci_get_drvdata(hdev); 667 668 switch (bt_cb(skb)->pkt_type) { 669 case HCI_COMMAND_PKT: 670 hdev->stat.cmd_tx++; 671 break; 672 case HCI_ACLDATA_PKT: 673 hdev->stat.acl_tx++; 674 break; 675 case HCI_SCODATA_PKT: 676 hdev->stat.sco_tx++; 677 break; 678 } 679 680 /* Prepend skb with frame type */ 681 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); 682 skb_queue_tail(&(info->txq), skb); 683 684 bluecard_write_wakeup(info); 685 686 return 0; 687 } 688 689 690 691 /* ======================== Card services HCI interaction ======================== */ 692 693 694 static int bluecard_open(bluecard_info_t *info) 695 { 696 unsigned int iobase = info->p_dev->resource[0]->start; 697 struct hci_dev *hdev; 698 unsigned char id; 699 700 spin_lock_init(&(info->lock)); 701 702 init_timer(&(info->timer)); 703 info->timer.function = &bluecard_activity_led_timeout; 704 info->timer.data = (u_long)info; 705 706 skb_queue_head_init(&(info->txq)); 707 708 info->rx_state = RECV_WAIT_PACKET_TYPE; 709 info->rx_count = 0; 710 info->rx_skb = NULL; 711 712 /* Initialize HCI device */ 713 hdev = hci_alloc_dev(); 714 if (!hdev) { 715 BT_ERR("Can't allocate HCI device"); 716 return -ENOMEM; 717 } 718 719 info->hdev = hdev; 720 721 hdev->bus = HCI_PCCARD; 722 hci_set_drvdata(hdev, info); 723 SET_HCIDEV_DEV(hdev, &info->p_dev->dev); 724 725 hdev->open = bluecard_hci_open; 726 hdev->close = bluecard_hci_close; 727 hdev->flush = bluecard_hci_flush; 728 hdev->send = bluecard_hci_send_frame; 729 730 id = inb(iobase + 0x30); 731 732 if ((id & 0x0f) == 0x02) 733 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); 734 735 if (id & 0x10) 736 set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); 737 738 if (id & 0x20) 739 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); 740 741 /* Reset card */ 742 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; 743 outb(info->ctrl_reg, iobase + REG_CONTROL); 744 745 /* Turn FPGA off */ 746 outb(0x80, iobase + 0x30); 747 748 /* Wait some time */ 749 msleep(10); 750 751 /* Turn FPGA on */ 752 outb(0x00, iobase + 0x30); 753 754 /* Activate card */ 755 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; 756 outb(info->ctrl_reg, iobase + REG_CONTROL); 757 758 /* Enable interrupt */ 759 outb(0xff, iobase + REG_INTERRUPT); 760 info->ctrl_reg |= REG_CONTROL_INTERRUPT; 761 outb(info->ctrl_reg, iobase + REG_CONTROL); 762 763 if ((id & 0x0f) == 0x03) { 764 /* Disable RTS */ 765 info->ctrl_reg |= REG_CONTROL_RTS; 766 outb(info->ctrl_reg, iobase + REG_CONTROL); 767 768 /* Set baud rate */ 769 info->ctrl_reg |= 0x03; 770 outb(info->ctrl_reg, iobase + REG_CONTROL); 771 772 /* Enable RTS */ 773 info->ctrl_reg &= ~REG_CONTROL_RTS; 774 outb(info->ctrl_reg, iobase + REG_CONTROL); 775 776 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); 777 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); 778 set_bit(XMIT_SENDING_READY, &(info->tx_state)); 779 } 780 781 /* Start the RX buffers */ 782 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); 783 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); 784 785 /* Signal that the hardware is ready */ 786 set_bit(CARD_READY, &(info->hw_state)); 787 788 /* Drop TX queue */ 789 skb_queue_purge(&(info->txq)); 790 791 /* Control the point at which RTS is enabled */ 792 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); 793 794 /* Timeout before it is safe to send the first HCI packet */ 795 msleep(1250); 796 797 /* Register HCI device */ 798 if (hci_register_dev(hdev) < 0) { 799 BT_ERR("Can't register HCI device"); 800 info->hdev = NULL; 801 hci_free_dev(hdev); 802 return -ENODEV; 803 } 804 805 return 0; 806 } 807 808 809 static int bluecard_close(bluecard_info_t *info) 810 { 811 unsigned int iobase = info->p_dev->resource[0]->start; 812 struct hci_dev *hdev = info->hdev; 813 814 if (!hdev) 815 return -ENODEV; 816 817 bluecard_hci_close(hdev); 818 819 clear_bit(CARD_READY, &(info->hw_state)); 820 821 /* Reset card */ 822 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; 823 outb(info->ctrl_reg, iobase + REG_CONTROL); 824 825 /* Turn FPGA off */ 826 outb(0x80, iobase + 0x30); 827 828 hci_unregister_dev(hdev); 829 hci_free_dev(hdev); 830 831 return 0; 832 } 833 834 static int bluecard_probe(struct pcmcia_device *link) 835 { 836 bluecard_info_t *info; 837 838 /* Create new info device */ 839 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL); 840 if (!info) 841 return -ENOMEM; 842 843 info->p_dev = link; 844 link->priv = info; 845 846 link->config_flags |= CONF_ENABLE_IRQ; 847 848 return bluecard_config(link); 849 } 850 851 852 static void bluecard_detach(struct pcmcia_device *link) 853 { 854 bluecard_release(link); 855 } 856 857 858 static int bluecard_config(struct pcmcia_device *link) 859 { 860 bluecard_info_t *info = link->priv; 861 int i, n; 862 863 link->config_index = 0x20; 864 865 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; 866 link->resource[0]->end = 64; 867 link->io_lines = 6; 868 869 for (n = 0; n < 0x400; n += 0x40) { 870 link->resource[0]->start = n ^ 0x300; 871 i = pcmcia_request_io(link); 872 if (i == 0) 873 break; 874 } 875 876 if (i != 0) 877 goto failed; 878 879 i = pcmcia_request_irq(link, bluecard_interrupt); 880 if (i != 0) 881 goto failed; 882 883 i = pcmcia_enable_device(link); 884 if (i != 0) 885 goto failed; 886 887 if (bluecard_open(info) != 0) 888 goto failed; 889 890 return 0; 891 892 failed: 893 bluecard_release(link); 894 return -ENODEV; 895 } 896 897 898 static void bluecard_release(struct pcmcia_device *link) 899 { 900 bluecard_info_t *info = link->priv; 901 902 bluecard_close(info); 903 904 del_timer_sync(&(info->timer)); 905 906 pcmcia_disable_device(link); 907 } 908 909 static const struct pcmcia_device_id bluecard_ids[] = { 910 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), 911 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), 912 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), 913 PCMCIA_DEVICE_NULL 914 }; 915 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); 916 917 static struct pcmcia_driver bluecard_driver = { 918 .owner = THIS_MODULE, 919 .name = "bluecard_cs", 920 .probe = bluecard_probe, 921 .remove = bluecard_detach, 922 .id_table = bluecard_ids, 923 }; 924 module_pcmcia_driver(bluecard_driver); 925