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
bluecard_activity_led_timeout(struct timer_list * t)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
bluecard_enable_activity_led(struct bluecard_info * info)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
bluecard_write(unsigned int iobase,unsigned int offset,__u8 * buf,int len)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
bluecard_write_wakeup(struct bluecard_info * info)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 default:
299 baud_reg = REG_CONTROL_BAUD_RATE_57600;
300 break;
301 }
302
303 /* Wait until the command reaches the baseband */
304 mdelay(100);
305
306 /* Set baud on baseband */
307 info->ctrl_reg &= ~0x03;
308 info->ctrl_reg |= baud_reg;
309 outb(info->ctrl_reg, iobase + REG_CONTROL);
310
311 /* Enable RTS */
312 info->ctrl_reg &= ~REG_CONTROL_RTS;
313 outb(info->ctrl_reg, iobase + REG_CONTROL);
314
315 /* Wait before the next HCI packet can be send */
316 mdelay(1000);
317 }
318
319 if (len == skb->len) {
320 kfree_skb(skb);
321 } else {
322 skb_pull(skb, len);
323 skb_queue_head(&(info->txq), skb);
324 }
325
326 info->hdev->stat.byte_tx += len;
327
328 /* Change buffer */
329 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
330
331 } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
332
333 clear_bit(XMIT_SENDING, &(info->tx_state));
334 }
335
336
bluecard_read(unsigned int iobase,unsigned int offset,__u8 * buf,int size)337 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
338 {
339 int i, n, len;
340
341 outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
342
343 len = inb(iobase + offset);
344 n = 0;
345 i = 1;
346
347 while (n < len) {
348
349 if (i == 16) {
350 outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
351 i = 0;
352 }
353
354 buf[n] = inb(iobase + offset + i);
355
356 n++;
357 i++;
358
359 }
360
361 return len;
362 }
363
364
bluecard_receive(struct bluecard_info * info,unsigned int offset)365 static void bluecard_receive(struct bluecard_info *info,
366 unsigned int offset)
367 {
368 unsigned int iobase;
369 unsigned char buf[31];
370 int i, len;
371
372 if (!info) {
373 BT_ERR("Unknown device");
374 return;
375 }
376
377 iobase = info->p_dev->resource[0]->start;
378
379 if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
380 bluecard_enable_activity_led(info);
381
382 len = bluecard_read(iobase, offset, buf, sizeof(buf));
383
384 for (i = 0; i < len; i++) {
385
386 /* Allocate packet */
387 if (!info->rx_skb) {
388 info->rx_state = RECV_WAIT_PACKET_TYPE;
389 info->rx_count = 0;
390 info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
391 if (!info->rx_skb) {
392 BT_ERR("Can't allocate mem for new packet");
393 return;
394 }
395 }
396
397 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
398
399 hci_skb_pkt_type(info->rx_skb) = buf[i];
400
401 switch (hci_skb_pkt_type(info->rx_skb)) {
402
403 case 0x00:
404 /* init packet */
405 if (offset != 0x00) {
406 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
407 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
408 set_bit(XMIT_SENDING_READY, &(info->tx_state));
409 bluecard_write_wakeup(info);
410 }
411
412 kfree_skb(info->rx_skb);
413 info->rx_skb = NULL;
414 break;
415
416 case HCI_EVENT_PKT:
417 info->rx_state = RECV_WAIT_EVENT_HEADER;
418 info->rx_count = HCI_EVENT_HDR_SIZE;
419 break;
420
421 case HCI_ACLDATA_PKT:
422 info->rx_state = RECV_WAIT_ACL_HEADER;
423 info->rx_count = HCI_ACL_HDR_SIZE;
424 break;
425
426 case HCI_SCODATA_PKT:
427 info->rx_state = RECV_WAIT_SCO_HEADER;
428 info->rx_count = HCI_SCO_HDR_SIZE;
429 break;
430
431 default:
432 /* unknown packet */
433 BT_ERR("Unknown HCI packet with type 0x%02x received",
434 hci_skb_pkt_type(info->rx_skb));
435 info->hdev->stat.err_rx++;
436
437 kfree_skb(info->rx_skb);
438 info->rx_skb = NULL;
439 break;
440
441 }
442
443 } else {
444
445 skb_put_u8(info->rx_skb, buf[i]);
446 info->rx_count--;
447
448 if (info->rx_count == 0) {
449
450 int dlen;
451 struct hci_event_hdr *eh;
452 struct hci_acl_hdr *ah;
453 struct hci_sco_hdr *sh;
454
455 switch (info->rx_state) {
456
457 case RECV_WAIT_EVENT_HEADER:
458 eh = hci_event_hdr(info->rx_skb);
459 info->rx_state = RECV_WAIT_DATA;
460 info->rx_count = eh->plen;
461 break;
462
463 case RECV_WAIT_ACL_HEADER:
464 ah = hci_acl_hdr(info->rx_skb);
465 dlen = __le16_to_cpu(ah->dlen);
466 info->rx_state = RECV_WAIT_DATA;
467 info->rx_count = dlen;
468 break;
469
470 case RECV_WAIT_SCO_HEADER:
471 sh = hci_sco_hdr(info->rx_skb);
472 info->rx_state = RECV_WAIT_DATA;
473 info->rx_count = sh->dlen;
474 break;
475
476 case RECV_WAIT_DATA:
477 hci_recv_frame(info->hdev, info->rx_skb);
478 info->rx_skb = NULL;
479 break;
480
481 }
482
483 }
484
485 }
486
487
488 }
489
490 info->hdev->stat.byte_rx += len;
491 }
492
493
bluecard_interrupt(int irq,void * dev_inst)494 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
495 {
496 struct bluecard_info *info = dev_inst;
497 unsigned int iobase;
498 unsigned char reg;
499
500 if (!info || !info->hdev)
501 /* our irq handler is shared */
502 return IRQ_NONE;
503
504 if (!test_bit(CARD_READY, &(info->hw_state)))
505 return IRQ_HANDLED;
506
507 iobase = info->p_dev->resource[0]->start;
508
509 spin_lock(&(info->lock));
510
511 /* Disable interrupt */
512 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
513 outb(info->ctrl_reg, iobase + REG_CONTROL);
514
515 reg = inb(iobase + REG_INTERRUPT);
516
517 if ((reg != 0x00) && (reg != 0xff)) {
518
519 if (reg & 0x04) {
520 bluecard_receive(info, 0x00);
521 outb(0x04, iobase + REG_INTERRUPT);
522 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
523 }
524
525 if (reg & 0x08) {
526 bluecard_receive(info, 0x10);
527 outb(0x08, iobase + REG_INTERRUPT);
528 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
529 }
530
531 if (reg & 0x01) {
532 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
533 outb(0x01, iobase + REG_INTERRUPT);
534 bluecard_write_wakeup(info);
535 }
536
537 if (reg & 0x02) {
538 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
539 outb(0x02, iobase + REG_INTERRUPT);
540 bluecard_write_wakeup(info);
541 }
542
543 }
544
545 /* Enable interrupt */
546 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
547 outb(info->ctrl_reg, iobase + REG_CONTROL);
548
549 spin_unlock(&(info->lock));
550
551 return IRQ_HANDLED;
552 }
553
554
555
556 /* ======================== Device specific HCI commands ======================== */
557
558
bluecard_hci_set_baud_rate(struct hci_dev * hdev,int baud)559 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
560 {
561 struct bluecard_info *info = hci_get_drvdata(hdev);
562 struct sk_buff *skb;
563
564 /* Ericsson baud rate command */
565 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
566
567 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_KERNEL);
568 if (!skb) {
569 BT_ERR("Can't allocate mem for new packet");
570 return -1;
571 }
572
573 switch (baud) {
574 case 460800:
575 cmd[4] = 0x00;
576 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
577 break;
578 case 230400:
579 cmd[4] = 0x01;
580 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
581 break;
582 case 115200:
583 cmd[4] = 0x02;
584 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
585 break;
586 case 57600:
587 default:
588 cmd[4] = 0x03;
589 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
590 break;
591 }
592
593 skb_put_data(skb, cmd, sizeof(cmd));
594
595 skb_queue_tail(&(info->txq), skb);
596
597 bluecard_write_wakeup(info);
598
599 return 0;
600 }
601
602
603
604 /* ======================== HCI interface ======================== */
605
606
bluecard_hci_flush(struct hci_dev * hdev)607 static int bluecard_hci_flush(struct hci_dev *hdev)
608 {
609 struct bluecard_info *info = hci_get_drvdata(hdev);
610
611 /* Drop TX queue */
612 skb_queue_purge(&(info->txq));
613
614 return 0;
615 }
616
617
bluecard_hci_open(struct hci_dev * hdev)618 static int bluecard_hci_open(struct hci_dev *hdev)
619 {
620 struct bluecard_info *info = hci_get_drvdata(hdev);
621 unsigned int iobase = info->p_dev->resource[0]->start;
622
623 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
624 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
625
626 /* Enable power LED */
627 outb(0x08 | 0x20, iobase + 0x30);
628
629 return 0;
630 }
631
632
bluecard_hci_close(struct hci_dev * hdev)633 static int bluecard_hci_close(struct hci_dev *hdev)
634 {
635 struct bluecard_info *info = hci_get_drvdata(hdev);
636 unsigned int iobase = info->p_dev->resource[0]->start;
637
638 bluecard_hci_flush(hdev);
639
640 /* Stop LED timer */
641 del_timer_sync(&(info->timer));
642
643 /* Disable power LED */
644 outb(0x00, iobase + 0x30);
645
646 return 0;
647 }
648
649
bluecard_hci_send_frame(struct hci_dev * hdev,struct sk_buff * skb)650 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
651 {
652 struct bluecard_info *info = hci_get_drvdata(hdev);
653
654 switch (hci_skb_pkt_type(skb)) {
655 case HCI_COMMAND_PKT:
656 hdev->stat.cmd_tx++;
657 break;
658 case HCI_ACLDATA_PKT:
659 hdev->stat.acl_tx++;
660 break;
661 case HCI_SCODATA_PKT:
662 hdev->stat.sco_tx++;
663 break;
664 }
665
666 /* Prepend skb with frame type */
667 memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
668 skb_queue_tail(&(info->txq), skb);
669
670 bluecard_write_wakeup(info);
671
672 return 0;
673 }
674
675
676
677 /* ======================== Card services HCI interaction ======================== */
678
679
bluecard_open(struct bluecard_info * info)680 static int bluecard_open(struct bluecard_info *info)
681 {
682 unsigned int iobase = info->p_dev->resource[0]->start;
683 struct hci_dev *hdev;
684 unsigned char id;
685
686 spin_lock_init(&(info->lock));
687
688 timer_setup(&info->timer, bluecard_activity_led_timeout, 0);
689
690 skb_queue_head_init(&(info->txq));
691
692 info->rx_state = RECV_WAIT_PACKET_TYPE;
693 info->rx_count = 0;
694 info->rx_skb = NULL;
695
696 /* Initialize HCI device */
697 hdev = hci_alloc_dev();
698 if (!hdev) {
699 BT_ERR("Can't allocate HCI device");
700 return -ENOMEM;
701 }
702
703 info->hdev = hdev;
704
705 hdev->bus = HCI_PCCARD;
706 hci_set_drvdata(hdev, info);
707 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
708
709 hdev->open = bluecard_hci_open;
710 hdev->close = bluecard_hci_close;
711 hdev->flush = bluecard_hci_flush;
712 hdev->send = bluecard_hci_send_frame;
713
714 id = inb(iobase + 0x30);
715
716 if ((id & 0x0f) == 0x02)
717 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
718
719 if (id & 0x10)
720 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
721
722 if (id & 0x20)
723 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
724
725 /* Reset card */
726 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
727 outb(info->ctrl_reg, iobase + REG_CONTROL);
728
729 /* Turn FPGA off */
730 outb(0x80, iobase + 0x30);
731
732 /* Wait some time */
733 msleep(10);
734
735 /* Turn FPGA on */
736 outb(0x00, iobase + 0x30);
737
738 /* Activate card */
739 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
740 outb(info->ctrl_reg, iobase + REG_CONTROL);
741
742 /* Enable interrupt */
743 outb(0xff, iobase + REG_INTERRUPT);
744 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
745 outb(info->ctrl_reg, iobase + REG_CONTROL);
746
747 if ((id & 0x0f) == 0x03) {
748 /* Disable RTS */
749 info->ctrl_reg |= REG_CONTROL_RTS;
750 outb(info->ctrl_reg, iobase + REG_CONTROL);
751
752 /* Set baud rate */
753 info->ctrl_reg |= 0x03;
754 outb(info->ctrl_reg, iobase + REG_CONTROL);
755
756 /* Enable RTS */
757 info->ctrl_reg &= ~REG_CONTROL_RTS;
758 outb(info->ctrl_reg, iobase + REG_CONTROL);
759
760 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
761 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
762 set_bit(XMIT_SENDING_READY, &(info->tx_state));
763 }
764
765 /* Start the RX buffers */
766 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
767 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
768
769 /* Signal that the hardware is ready */
770 set_bit(CARD_READY, &(info->hw_state));
771
772 /* Drop TX queue */
773 skb_queue_purge(&(info->txq));
774
775 /* Control the point at which RTS is enabled */
776 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
777
778 /* Timeout before it is safe to send the first HCI packet */
779 msleep(1250);
780
781 /* Register HCI device */
782 if (hci_register_dev(hdev) < 0) {
783 BT_ERR("Can't register HCI device");
784 info->hdev = NULL;
785 hci_free_dev(hdev);
786 return -ENODEV;
787 }
788
789 return 0;
790 }
791
792
bluecard_close(struct bluecard_info * info)793 static int bluecard_close(struct bluecard_info *info)
794 {
795 unsigned int iobase = info->p_dev->resource[0]->start;
796 struct hci_dev *hdev = info->hdev;
797
798 if (!hdev)
799 return -ENODEV;
800
801 bluecard_hci_close(hdev);
802
803 clear_bit(CARD_READY, &(info->hw_state));
804
805 /* Reset card */
806 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
807 outb(info->ctrl_reg, iobase + REG_CONTROL);
808
809 /* Turn FPGA off */
810 outb(0x80, iobase + 0x30);
811
812 hci_unregister_dev(hdev);
813 hci_free_dev(hdev);
814
815 return 0;
816 }
817
bluecard_probe(struct pcmcia_device * link)818 static int bluecard_probe(struct pcmcia_device *link)
819 {
820 struct bluecard_info *info;
821
822 /* Create new info device */
823 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
824 if (!info)
825 return -ENOMEM;
826
827 info->p_dev = link;
828 link->priv = info;
829
830 link->config_flags |= CONF_ENABLE_IRQ;
831
832 return bluecard_config(link);
833 }
834
835
bluecard_detach(struct pcmcia_device * link)836 static void bluecard_detach(struct pcmcia_device *link)
837 {
838 bluecard_release(link);
839 }
840
841
bluecard_config(struct pcmcia_device * link)842 static int bluecard_config(struct pcmcia_device *link)
843 {
844 struct bluecard_info *info = link->priv;
845 int i, n;
846
847 link->config_index = 0x20;
848
849 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
850 link->resource[0]->end = 64;
851 link->io_lines = 6;
852
853 for (n = 0; n < 0x400; n += 0x40) {
854 link->resource[0]->start = n ^ 0x300;
855 i = pcmcia_request_io(link);
856 if (i == 0)
857 break;
858 }
859
860 if (i != 0)
861 goto failed;
862
863 i = pcmcia_request_irq(link, bluecard_interrupt);
864 if (i != 0)
865 goto failed;
866
867 i = pcmcia_enable_device(link);
868 if (i != 0)
869 goto failed;
870
871 if (bluecard_open(info) != 0)
872 goto failed;
873
874 return 0;
875
876 failed:
877 bluecard_release(link);
878 return -ENODEV;
879 }
880
881
bluecard_release(struct pcmcia_device * link)882 static void bluecard_release(struct pcmcia_device *link)
883 {
884 struct bluecard_info *info = link->priv;
885
886 bluecard_close(info);
887
888 del_timer_sync(&(info->timer));
889
890 pcmcia_disable_device(link);
891 }
892
893 static const struct pcmcia_device_id bluecard_ids[] = {
894 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
895 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
896 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
897 PCMCIA_DEVICE_NULL
898 };
899 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
900
901 static struct pcmcia_driver bluecard_driver = {
902 .owner = THIS_MODULE,
903 .name = "bluecard_cs",
904 .probe = bluecard_probe,
905 .remove = bluecard_detach,
906 .id_table = bluecard_ids,
907 };
908 module_pcmcia_driver(bluecard_driver);
909