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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_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
159static 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
175static 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
202static 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
217static 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
337static 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
365static 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
494static 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
559static 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
607static 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
618static 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
633static 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
650static 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
680static 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
793static 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
818static 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
836static void bluecard_detach(struct pcmcia_device *link)
837{
838 bluecard_release(link);
839}
840
841
842static 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
876failed:
877 bluecard_release(link);
878 return -ENODEV;
879}
880
881
882static 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
893static 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};
899MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
900
901static 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};
908module_pcmcia_driver(bluecard_driver);
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
64typedef 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
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 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
176static 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
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(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
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(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
498static 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
563static 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
612static 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
623static 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
644static 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
664static 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
694static 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
809static 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
834static 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
852static void bluecard_detach(struct pcmcia_device *link)
853{
854 bluecard_release(link);
855}
856
857
858static 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
892failed:
893 bluecard_release(link);
894 return -ENODEV;
895}
896
897
898static 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
909static 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};
915MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
916
917static 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};
924module_pcmcia_driver(bluecard_driver);