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_ACTIVITY	       2
97 #define CARD_HAS_PCCARD_ID     4
98 #define CARD_HAS_POWER_LED     5
99 #define CARD_HAS_ACTIVITY_LED  6
100 
101 /* Transmit states  */
102 #define XMIT_SENDING         1
103 #define XMIT_WAKEUP          2
104 #define XMIT_BUFFER_NUMBER   5	/* unset = buffer one, set = buffer two */
105 #define XMIT_BUF_ONE_READY   6
106 #define XMIT_BUF_TWO_READY   7
107 #define XMIT_SENDING_READY   8
108 
109 /* Receiver states */
110 #define RECV_WAIT_PACKET_TYPE   0
111 #define RECV_WAIT_EVENT_HEADER  1
112 #define RECV_WAIT_ACL_HEADER    2
113 #define RECV_WAIT_SCO_HEADER    3
114 #define RECV_WAIT_DATA          4
115 
116 /* Special packet types */
117 #define PKT_BAUD_RATE_57600   0x80
118 #define PKT_BAUD_RATE_115200  0x81
119 #define PKT_BAUD_RATE_230400  0x82
120 #define PKT_BAUD_RATE_460800  0x83
121 
122 
123 /* These are the register offsets */
124 #define REG_COMMAND     0x20
125 #define REG_INTERRUPT   0x21
126 #define REG_CONTROL     0x22
127 #define REG_RX_CONTROL  0x24
128 #define REG_CARD_RESET  0x30
129 #define REG_LED_CTRL    0x30
130 
131 /* REG_COMMAND */
132 #define REG_COMMAND_TX_BUF_ONE  0x01
133 #define REG_COMMAND_TX_BUF_TWO  0x02
134 #define REG_COMMAND_RX_BUF_ONE  0x04
135 #define REG_COMMAND_RX_BUF_TWO  0x08
136 #define REG_COMMAND_RX_WIN_ONE  0x00
137 #define REG_COMMAND_RX_WIN_TWO  0x10
138 
139 /* REG_CONTROL */
140 #define REG_CONTROL_BAUD_RATE_57600   0x00
141 #define REG_CONTROL_BAUD_RATE_115200  0x01
142 #define REG_CONTROL_BAUD_RATE_230400  0x02
143 #define REG_CONTROL_BAUD_RATE_460800  0x03
144 #define REG_CONTROL_RTS               0x04
145 #define REG_CONTROL_BT_ON             0x08
146 #define REG_CONTROL_BT_RESET          0x10
147 #define REG_CONTROL_BT_RES_PU         0x20
148 #define REG_CONTROL_INTERRUPT         0x40
149 #define REG_CONTROL_CARD_RESET        0x80
150 
151 /* REG_RX_CONTROL */
152 #define RTS_LEVEL_SHIFT_BITS  0x02
153 
154 
155 
156 /* ======================== LED handling routines ======================== */
157 
158 
159 static void bluecard_activity_led_timeout(struct timer_list *t)
160 {
161 	struct bluecard_info *info = from_timer(info, t, timer);
162 	unsigned int iobase = info->p_dev->resource[0]->start;
163 
164 	if (test_bit(CARD_ACTIVITY, &(info->hw_state))) {
165 		/* leave LED in inactive state for HZ/10 for blink effect */
166 		clear_bit(CARD_ACTIVITY, &(info->hw_state));
167 		mod_timer(&(info->timer), jiffies + HZ / 10);
168 	}
169 
170 	/* Disable activity LED, enable power LED */
171 	outb(0x08 | 0x20, iobase + 0x30);
172 }
173 
174 
175 static void bluecard_enable_activity_led(struct bluecard_info *info)
176 {
177 	unsigned int iobase = info->p_dev->resource[0]->start;
178 
179 	/* don't disturb running blink timer */
180 	if (timer_pending(&(info->timer)))
181 		return;
182 
183 	set_bit(CARD_ACTIVITY, &(info->hw_state));
184 
185 	if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
186 		/* Enable activity LED, keep power LED enabled */
187 		outb(0x18 | 0x60, iobase + 0x30);
188 	} else {
189 		/* Disable power LED */
190 		outb(0x00, iobase + 0x30);
191 	}
192 
193 	/* Stop the LED after HZ/10 */
194 	mod_timer(&(info->timer), jiffies + HZ / 10);
195 }
196 
197 
198 
199 /* ======================== Interrupt handling ======================== */
200 
201 
202 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
203 {
204 	int i, actual;
205 
206 	actual = (len > 15) ? 15 : len;
207 
208 	outb_p(actual, iobase + offset);
209 
210 	for (i = 0; i < actual; i++)
211 		outb_p(buf[i], iobase + offset + i + 1);
212 
213 	return actual;
214 }
215 
216 
217 static void bluecard_write_wakeup(struct bluecard_info *info)
218 {
219 	if (!info) {
220 		BT_ERR("Unknown device");
221 		return;
222 	}
223 
224 	if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
225 		return;
226 
227 	if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
228 		set_bit(XMIT_WAKEUP, &(info->tx_state));
229 		return;
230 	}
231 
232 	do {
233 		unsigned int iobase = info->p_dev->resource[0]->start;
234 		unsigned int offset;
235 		unsigned char command;
236 		unsigned long ready_bit;
237 		register struct sk_buff *skb;
238 		int len;
239 
240 		clear_bit(XMIT_WAKEUP, &(info->tx_state));
241 
242 		if (!pcmcia_dev_present(info->p_dev))
243 			return;
244 
245 		if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
246 			if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
247 				break;
248 			offset = 0x10;
249 			command = REG_COMMAND_TX_BUF_TWO;
250 			ready_bit = XMIT_BUF_TWO_READY;
251 		} else {
252 			if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
253 				break;
254 			offset = 0x00;
255 			command = REG_COMMAND_TX_BUF_ONE;
256 			ready_bit = XMIT_BUF_ONE_READY;
257 		}
258 
259 		skb = skb_dequeue(&(info->txq));
260 		if (!skb)
261 			break;
262 
263 		if (hci_skb_pkt_type(skb) & 0x80) {
264 			/* Disable RTS */
265 			info->ctrl_reg |= REG_CONTROL_RTS;
266 			outb(info->ctrl_reg, iobase + REG_CONTROL);
267 		}
268 
269 		/* Activate LED */
270 		bluecard_enable_activity_led(info);
271 
272 		/* Send frame */
273 		len = bluecard_write(iobase, offset, skb->data, skb->len);
274 
275 		/* Tell the FPGA to send the data */
276 		outb_p(command, iobase + REG_COMMAND);
277 
278 		/* Mark the buffer as dirty */
279 		clear_bit(ready_bit, &(info->tx_state));
280 
281 		if (hci_skb_pkt_type(skb) & 0x80) {
282 			DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
283 			DEFINE_WAIT(wait);
284 
285 			unsigned char baud_reg;
286 
287 			switch (hci_skb_pkt_type(skb)) {
288 			case PKT_BAUD_RATE_460800:
289 				baud_reg = REG_CONTROL_BAUD_RATE_460800;
290 				break;
291 			case PKT_BAUD_RATE_230400:
292 				baud_reg = REG_CONTROL_BAUD_RATE_230400;
293 				break;
294 			case PKT_BAUD_RATE_115200:
295 				baud_reg = REG_CONTROL_BAUD_RATE_115200;
296 				break;
297 			case PKT_BAUD_RATE_57600:
298 				/* Fall through... */
299 			default:
300 				baud_reg = REG_CONTROL_BAUD_RATE_57600;
301 				break;
302 			}
303 
304 			/* Wait until the command reaches the baseband */
305 			mdelay(100);
306 
307 			/* Set baud on baseband */
308 			info->ctrl_reg &= ~0x03;
309 			info->ctrl_reg |= baud_reg;
310 			outb(info->ctrl_reg, iobase + REG_CONTROL);
311 
312 			/* Enable RTS */
313 			info->ctrl_reg &= ~REG_CONTROL_RTS;
314 			outb(info->ctrl_reg, iobase + REG_CONTROL);
315 
316 			/* Wait before the next HCI packet can be send */
317 			mdelay(1000);
318 		}
319 
320 		if (len == skb->len) {
321 			kfree_skb(skb);
322 		} else {
323 			skb_pull(skb, len);
324 			skb_queue_head(&(info->txq), skb);
325 		}
326 
327 		info->hdev->stat.byte_tx += len;
328 
329 		/* Change buffer */
330 		change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
331 
332 	} while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
333 
334 	clear_bit(XMIT_SENDING, &(info->tx_state));
335 }
336 
337 
338 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
339 {
340 	int i, n, len;
341 
342 	outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
343 
344 	len = inb(iobase + offset);
345 	n = 0;
346 	i = 1;
347 
348 	while (n < len) {
349 
350 		if (i == 16) {
351 			outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
352 			i = 0;
353 		}
354 
355 		buf[n] = inb(iobase + offset + i);
356 
357 		n++;
358 		i++;
359 
360 	}
361 
362 	return len;
363 }
364 
365 
366 static void bluecard_receive(struct bluecard_info *info,
367 			     unsigned int offset)
368 {
369 	unsigned int iobase;
370 	unsigned char buf[31];
371 	int i, len;
372 
373 	if (!info) {
374 		BT_ERR("Unknown device");
375 		return;
376 	}
377 
378 	iobase = info->p_dev->resource[0]->start;
379 
380 	if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
381 		bluecard_enable_activity_led(info);
382 
383 	len = bluecard_read(iobase, offset, buf, sizeof(buf));
384 
385 	for (i = 0; i < len; i++) {
386 
387 		/* Allocate packet */
388 		if (!info->rx_skb) {
389 			info->rx_state = RECV_WAIT_PACKET_TYPE;
390 			info->rx_count = 0;
391 			info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
392 			if (!info->rx_skb) {
393 				BT_ERR("Can't allocate mem for new packet");
394 				return;
395 			}
396 		}
397 
398 		if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
399 
400 			hci_skb_pkt_type(info->rx_skb) = buf[i];
401 
402 			switch (hci_skb_pkt_type(info->rx_skb)) {
403 
404 			case 0x00:
405 				/* init packet */
406 				if (offset != 0x00) {
407 					set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
408 					set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
409 					set_bit(XMIT_SENDING_READY, &(info->tx_state));
410 					bluecard_write_wakeup(info);
411 				}
412 
413 				kfree_skb(info->rx_skb);
414 				info->rx_skb = NULL;
415 				break;
416 
417 			case HCI_EVENT_PKT:
418 				info->rx_state = RECV_WAIT_EVENT_HEADER;
419 				info->rx_count = HCI_EVENT_HDR_SIZE;
420 				break;
421 
422 			case HCI_ACLDATA_PKT:
423 				info->rx_state = RECV_WAIT_ACL_HEADER;
424 				info->rx_count = HCI_ACL_HDR_SIZE;
425 				break;
426 
427 			case HCI_SCODATA_PKT:
428 				info->rx_state = RECV_WAIT_SCO_HEADER;
429 				info->rx_count = HCI_SCO_HDR_SIZE;
430 				break;
431 
432 			default:
433 				/* unknown packet */
434 				BT_ERR("Unknown HCI packet with type 0x%02x received",
435 				       hci_skb_pkt_type(info->rx_skb));
436 				info->hdev->stat.err_rx++;
437 
438 				kfree_skb(info->rx_skb);
439 				info->rx_skb = NULL;
440 				break;
441 
442 			}
443 
444 		} else {
445 
446 			skb_put_u8(info->rx_skb, buf[i]);
447 			info->rx_count--;
448 
449 			if (info->rx_count == 0) {
450 
451 				int dlen;
452 				struct hci_event_hdr *eh;
453 				struct hci_acl_hdr *ah;
454 				struct hci_sco_hdr *sh;
455 
456 				switch (info->rx_state) {
457 
458 				case RECV_WAIT_EVENT_HEADER:
459 					eh = hci_event_hdr(info->rx_skb);
460 					info->rx_state = RECV_WAIT_DATA;
461 					info->rx_count = eh->plen;
462 					break;
463 
464 				case RECV_WAIT_ACL_HEADER:
465 					ah = hci_acl_hdr(info->rx_skb);
466 					dlen = __le16_to_cpu(ah->dlen);
467 					info->rx_state = RECV_WAIT_DATA;
468 					info->rx_count = dlen;
469 					break;
470 
471 				case RECV_WAIT_SCO_HEADER:
472 					sh = hci_sco_hdr(info->rx_skb);
473 					info->rx_state = RECV_WAIT_DATA;
474 					info->rx_count = sh->dlen;
475 					break;
476 
477 				case RECV_WAIT_DATA:
478 					hci_recv_frame(info->hdev, info->rx_skb);
479 					info->rx_skb = NULL;
480 					break;
481 
482 				}
483 
484 			}
485 
486 		}
487 
488 
489 	}
490 
491 	info->hdev->stat.byte_rx += len;
492 }
493 
494 
495 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
496 {
497 	struct bluecard_info *info = dev_inst;
498 	unsigned int iobase;
499 	unsigned char reg;
500 
501 	if (!info || !info->hdev)
502 		/* our irq handler is shared */
503 		return IRQ_NONE;
504 
505 	if (!test_bit(CARD_READY, &(info->hw_state)))
506 		return IRQ_HANDLED;
507 
508 	iobase = info->p_dev->resource[0]->start;
509 
510 	spin_lock(&(info->lock));
511 
512 	/* Disable interrupt */
513 	info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
514 	outb(info->ctrl_reg, iobase + REG_CONTROL);
515 
516 	reg = inb(iobase + REG_INTERRUPT);
517 
518 	if ((reg != 0x00) && (reg != 0xff)) {
519 
520 		if (reg & 0x04) {
521 			bluecard_receive(info, 0x00);
522 			outb(0x04, iobase + REG_INTERRUPT);
523 			outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
524 		}
525 
526 		if (reg & 0x08) {
527 			bluecard_receive(info, 0x10);
528 			outb(0x08, iobase + REG_INTERRUPT);
529 			outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
530 		}
531 
532 		if (reg & 0x01) {
533 			set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
534 			outb(0x01, iobase + REG_INTERRUPT);
535 			bluecard_write_wakeup(info);
536 		}
537 
538 		if (reg & 0x02) {
539 			set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
540 			outb(0x02, iobase + REG_INTERRUPT);
541 			bluecard_write_wakeup(info);
542 		}
543 
544 	}
545 
546 	/* Enable interrupt */
547 	info->ctrl_reg |= REG_CONTROL_INTERRUPT;
548 	outb(info->ctrl_reg, iobase + REG_CONTROL);
549 
550 	spin_unlock(&(info->lock));
551 
552 	return IRQ_HANDLED;
553 }
554 
555 
556 
557 /* ======================== Device specific HCI commands ======================== */
558 
559 
560 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
561 {
562 	struct bluecard_info *info = hci_get_drvdata(hdev);
563 	struct sk_buff *skb;
564 
565 	/* Ericsson baud rate command */
566 	unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
567 
568 	skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_KERNEL);
569 	if (!skb) {
570 		BT_ERR("Can't allocate mem for new packet");
571 		return -1;
572 	}
573 
574 	switch (baud) {
575 	case 460800:
576 		cmd[4] = 0x00;
577 		hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
578 		break;
579 	case 230400:
580 		cmd[4] = 0x01;
581 		hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
582 		break;
583 	case 115200:
584 		cmd[4] = 0x02;
585 		hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
586 		break;
587 	case 57600:
588 		/* Fall through... */
589 	default:
590 		cmd[4] = 0x03;
591 		hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
592 		break;
593 	}
594 
595 	skb_put_data(skb, cmd, sizeof(cmd));
596 
597 	skb_queue_tail(&(info->txq), skb);
598 
599 	bluecard_write_wakeup(info);
600 
601 	return 0;
602 }
603 
604 
605 
606 /* ======================== HCI interface ======================== */
607 
608 
609 static int bluecard_hci_flush(struct hci_dev *hdev)
610 {
611 	struct bluecard_info *info = hci_get_drvdata(hdev);
612 
613 	/* Drop TX queue */
614 	skb_queue_purge(&(info->txq));
615 
616 	return 0;
617 }
618 
619 
620 static int bluecard_hci_open(struct hci_dev *hdev)
621 {
622 	struct bluecard_info *info = hci_get_drvdata(hdev);
623 	unsigned int iobase = info->p_dev->resource[0]->start;
624 
625 	if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
626 		bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
627 
628 	/* Enable power LED */
629 	outb(0x08 | 0x20, iobase + 0x30);
630 
631 	return 0;
632 }
633 
634 
635 static int bluecard_hci_close(struct hci_dev *hdev)
636 {
637 	struct bluecard_info *info = hci_get_drvdata(hdev);
638 	unsigned int iobase = info->p_dev->resource[0]->start;
639 
640 	bluecard_hci_flush(hdev);
641 
642 	/* Stop LED timer */
643 	del_timer_sync(&(info->timer));
644 
645 	/* Disable power LED */
646 	outb(0x00, iobase + 0x30);
647 
648 	return 0;
649 }
650 
651 
652 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
653 {
654 	struct bluecard_info *info = hci_get_drvdata(hdev);
655 
656 	switch (hci_skb_pkt_type(skb)) {
657 	case HCI_COMMAND_PKT:
658 		hdev->stat.cmd_tx++;
659 		break;
660 	case HCI_ACLDATA_PKT:
661 		hdev->stat.acl_tx++;
662 		break;
663 	case HCI_SCODATA_PKT:
664 		hdev->stat.sco_tx++;
665 		break;
666 	}
667 
668 	/* Prepend skb with frame type */
669 	memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
670 	skb_queue_tail(&(info->txq), skb);
671 
672 	bluecard_write_wakeup(info);
673 
674 	return 0;
675 }
676 
677 
678 
679 /* ======================== Card services HCI interaction ======================== */
680 
681 
682 static int bluecard_open(struct bluecard_info *info)
683 {
684 	unsigned int iobase = info->p_dev->resource[0]->start;
685 	struct hci_dev *hdev;
686 	unsigned char id;
687 
688 	spin_lock_init(&(info->lock));
689 
690 	timer_setup(&info->timer, bluecard_activity_led_timeout, 0);
691 
692 	skb_queue_head_init(&(info->txq));
693 
694 	info->rx_state = RECV_WAIT_PACKET_TYPE;
695 	info->rx_count = 0;
696 	info->rx_skb = NULL;
697 
698 	/* Initialize HCI device */
699 	hdev = hci_alloc_dev();
700 	if (!hdev) {
701 		BT_ERR("Can't allocate HCI device");
702 		return -ENOMEM;
703 	}
704 
705 	info->hdev = hdev;
706 
707 	hdev->bus = HCI_PCCARD;
708 	hci_set_drvdata(hdev, info);
709 	SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
710 
711 	hdev->open  = bluecard_hci_open;
712 	hdev->close = bluecard_hci_close;
713 	hdev->flush = bluecard_hci_flush;
714 	hdev->send  = bluecard_hci_send_frame;
715 
716 	id = inb(iobase + 0x30);
717 
718 	if ((id & 0x0f) == 0x02)
719 		set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
720 
721 	if (id & 0x10)
722 		set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
723 
724 	if (id & 0x20)
725 		set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
726 
727 	/* Reset card */
728 	info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
729 	outb(info->ctrl_reg, iobase + REG_CONTROL);
730 
731 	/* Turn FPGA off */
732 	outb(0x80, iobase + 0x30);
733 
734 	/* Wait some time */
735 	msleep(10);
736 
737 	/* Turn FPGA on */
738 	outb(0x00, iobase + 0x30);
739 
740 	/* Activate card */
741 	info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
742 	outb(info->ctrl_reg, iobase + REG_CONTROL);
743 
744 	/* Enable interrupt */
745 	outb(0xff, iobase + REG_INTERRUPT);
746 	info->ctrl_reg |= REG_CONTROL_INTERRUPT;
747 	outb(info->ctrl_reg, iobase + REG_CONTROL);
748 
749 	if ((id & 0x0f) == 0x03) {
750 		/* Disable RTS */
751 		info->ctrl_reg |= REG_CONTROL_RTS;
752 		outb(info->ctrl_reg, iobase + REG_CONTROL);
753 
754 		/* Set baud rate */
755 		info->ctrl_reg |= 0x03;
756 		outb(info->ctrl_reg, iobase + REG_CONTROL);
757 
758 		/* Enable RTS */
759 		info->ctrl_reg &= ~REG_CONTROL_RTS;
760 		outb(info->ctrl_reg, iobase + REG_CONTROL);
761 
762 		set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
763 		set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
764 		set_bit(XMIT_SENDING_READY, &(info->tx_state));
765 	}
766 
767 	/* Start the RX buffers */
768 	outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
769 	outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
770 
771 	/* Signal that the hardware is ready */
772 	set_bit(CARD_READY, &(info->hw_state));
773 
774 	/* Drop TX queue */
775 	skb_queue_purge(&(info->txq));
776 
777 	/* Control the point at which RTS is enabled */
778 	outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
779 
780 	/* Timeout before it is safe to send the first HCI packet */
781 	msleep(1250);
782 
783 	/* Register HCI device */
784 	if (hci_register_dev(hdev) < 0) {
785 		BT_ERR("Can't register HCI device");
786 		info->hdev = NULL;
787 		hci_free_dev(hdev);
788 		return -ENODEV;
789 	}
790 
791 	return 0;
792 }
793 
794 
795 static int bluecard_close(struct bluecard_info *info)
796 {
797 	unsigned int iobase = info->p_dev->resource[0]->start;
798 	struct hci_dev *hdev = info->hdev;
799 
800 	if (!hdev)
801 		return -ENODEV;
802 
803 	bluecard_hci_close(hdev);
804 
805 	clear_bit(CARD_READY, &(info->hw_state));
806 
807 	/* Reset card */
808 	info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
809 	outb(info->ctrl_reg, iobase + REG_CONTROL);
810 
811 	/* Turn FPGA off */
812 	outb(0x80, iobase + 0x30);
813 
814 	hci_unregister_dev(hdev);
815 	hci_free_dev(hdev);
816 
817 	return 0;
818 }
819 
820 static int bluecard_probe(struct pcmcia_device *link)
821 {
822 	struct bluecard_info *info;
823 
824 	/* Create new info device */
825 	info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
826 	if (!info)
827 		return -ENOMEM;
828 
829 	info->p_dev = link;
830 	link->priv = info;
831 
832 	link->config_flags |= CONF_ENABLE_IRQ;
833 
834 	return bluecard_config(link);
835 }
836 
837 
838 static void bluecard_detach(struct pcmcia_device *link)
839 {
840 	bluecard_release(link);
841 }
842 
843 
844 static int bluecard_config(struct pcmcia_device *link)
845 {
846 	struct bluecard_info *info = link->priv;
847 	int i, n;
848 
849 	link->config_index = 0x20;
850 
851 	link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
852 	link->resource[0]->end = 64;
853 	link->io_lines = 6;
854 
855 	for (n = 0; n < 0x400; n += 0x40) {
856 		link->resource[0]->start = n ^ 0x300;
857 		i = pcmcia_request_io(link);
858 		if (i == 0)
859 			break;
860 	}
861 
862 	if (i != 0)
863 		goto failed;
864 
865 	i = pcmcia_request_irq(link, bluecard_interrupt);
866 	if (i != 0)
867 		goto failed;
868 
869 	i = pcmcia_enable_device(link);
870 	if (i != 0)
871 		goto failed;
872 
873 	if (bluecard_open(info) != 0)
874 		goto failed;
875 
876 	return 0;
877 
878 failed:
879 	bluecard_release(link);
880 	return -ENODEV;
881 }
882 
883 
884 static void bluecard_release(struct pcmcia_device *link)
885 {
886 	struct bluecard_info *info = link->priv;
887 
888 	bluecard_close(info);
889 
890 	del_timer_sync(&(info->timer));
891 
892 	pcmcia_disable_device(link);
893 }
894 
895 static const struct pcmcia_device_id bluecard_ids[] = {
896 	PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
897 	PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
898 	PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
899 	PCMCIA_DEVICE_NULL
900 };
901 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
902 
903 static struct pcmcia_driver bluecard_driver = {
904 	.owner		= THIS_MODULE,
905 	.name		= "bluecard_cs",
906 	.probe		= bluecard_probe,
907 	.remove		= bluecard_detach,
908 	.id_table	= bluecard_ids,
909 };
910 module_pcmcia_driver(bluecard_driver);
911