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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
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 register unsigned int iobase = info->p_dev->resource[0]->start;
235 register unsigned int offset;
236 register unsigned char command;
237 register unsigned long ready_bit;
238 register struct sk_buff *skb;
239 register 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 if (!(skb = skb_dequeue(&(info->txq))))
261 break;
262
263 if (bt_cb(skb)->pkt_type & 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 (bt_cb(skb)->pkt_type & 0x80) {
282 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
283 DEFINE_WAIT(wait);
284
285 unsigned char baud_reg;
286
287 switch (bt_cb(skb)->pkt_type) {
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 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
306 schedule_timeout(HZ/10);
307 finish_wait(&wq, &wait);
308
309 /* Set baud on baseband */
310 info->ctrl_reg &= ~0x03;
311 info->ctrl_reg |= baud_reg;
312 outb(info->ctrl_reg, iobase + REG_CONTROL);
313
314 /* Enable RTS */
315 info->ctrl_reg &= ~REG_CONTROL_RTS;
316 outb(info->ctrl_reg, iobase + REG_CONTROL);
317
318 /* Wait before the next HCI packet can be send */
319 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
320 schedule_timeout(HZ);
321 finish_wait(&wq, &wait);
322 }
323
324 if (len == skb->len) {
325 kfree_skb(skb);
326 } else {
327 skb_pull(skb, len);
328 skb_queue_head(&(info->txq), skb);
329 }
330
331 info->hdev->stat.byte_tx += len;
332
333 /* Change buffer */
334 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
335
336 } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
337
338 clear_bit(XMIT_SENDING, &(info->tx_state));
339}
340
341
342static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
343{
344 int i, n, len;
345
346 outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
347
348 len = inb(iobase + offset);
349 n = 0;
350 i = 1;
351
352 while (n < len) {
353
354 if (i == 16) {
355 outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
356 i = 0;
357 }
358
359 buf[n] = inb(iobase + offset + i);
360
361 n++;
362 i++;
363
364 }
365
366 return len;
367}
368
369
370static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
371{
372 unsigned int iobase;
373 unsigned char buf[31];
374 int i, len;
375
376 if (!info) {
377 BT_ERR("Unknown device");
378 return;
379 }
380
381 iobase = info->p_dev->resource[0]->start;
382
383 if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
384 bluecard_enable_activity_led(info);
385
386 len = bluecard_read(iobase, offset, buf, sizeof(buf));
387
388 for (i = 0; i < len; i++) {
389
390 /* Allocate packet */
391 if (info->rx_skb == NULL) {
392 info->rx_state = RECV_WAIT_PACKET_TYPE;
393 info->rx_count = 0;
394 if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
395 BT_ERR("Can't allocate mem for new packet");
396 return;
397 }
398 }
399
400 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
401
402 info->rx_skb->dev = (void *) info->hdev;
403 bt_cb(info->rx_skb)->pkt_type = buf[i];
404
405 switch (bt_cb(info->rx_skb)->pkt_type) {
406
407 case 0x00:
408 /* init packet */
409 if (offset != 0x00) {
410 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
411 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
412 set_bit(XMIT_SENDING_READY, &(info->tx_state));
413 bluecard_write_wakeup(info);
414 }
415
416 kfree_skb(info->rx_skb);
417 info->rx_skb = NULL;
418 break;
419
420 case HCI_EVENT_PKT:
421 info->rx_state = RECV_WAIT_EVENT_HEADER;
422 info->rx_count = HCI_EVENT_HDR_SIZE;
423 break;
424
425 case HCI_ACLDATA_PKT:
426 info->rx_state = RECV_WAIT_ACL_HEADER;
427 info->rx_count = HCI_ACL_HDR_SIZE;
428 break;
429
430 case HCI_SCODATA_PKT:
431 info->rx_state = RECV_WAIT_SCO_HEADER;
432 info->rx_count = HCI_SCO_HDR_SIZE;
433 break;
434
435 default:
436 /* unknown packet */
437 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
438 info->hdev->stat.err_rx++;
439
440 kfree_skb(info->rx_skb);
441 info->rx_skb = NULL;
442 break;
443
444 }
445
446 } else {
447
448 *skb_put(info->rx_skb, 1) = buf[i];
449 info->rx_count--;
450
451 if (info->rx_count == 0) {
452
453 int dlen;
454 struct hci_event_hdr *eh;
455 struct hci_acl_hdr *ah;
456 struct hci_sco_hdr *sh;
457
458 switch (info->rx_state) {
459
460 case RECV_WAIT_EVENT_HEADER:
461 eh = hci_event_hdr(info->rx_skb);
462 info->rx_state = RECV_WAIT_DATA;
463 info->rx_count = eh->plen;
464 break;
465
466 case RECV_WAIT_ACL_HEADER:
467 ah = hci_acl_hdr(info->rx_skb);
468 dlen = __le16_to_cpu(ah->dlen);
469 info->rx_state = RECV_WAIT_DATA;
470 info->rx_count = dlen;
471 break;
472
473 case RECV_WAIT_SCO_HEADER:
474 sh = hci_sco_hdr(info->rx_skb);
475 info->rx_state = RECV_WAIT_DATA;
476 info->rx_count = sh->dlen;
477 break;
478
479 case RECV_WAIT_DATA:
480 hci_recv_frame(info->rx_skb);
481 info->rx_skb = NULL;
482 break;
483
484 }
485
486 }
487
488 }
489
490
491 }
492
493 info->hdev->stat.byte_rx += len;
494}
495
496
497static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
498{
499 bluecard_info_t *info = dev_inst;
500 unsigned int iobase;
501 unsigned char reg;
502
503 if (!info || !info->hdev)
504 /* our irq handler is shared */
505 return IRQ_NONE;
506
507 if (!test_bit(CARD_READY, &(info->hw_state)))
508 return IRQ_HANDLED;
509
510 iobase = info->p_dev->resource[0]->start;
511
512 spin_lock(&(info->lock));
513
514 /* Disable interrupt */
515 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
516 outb(info->ctrl_reg, iobase + REG_CONTROL);
517
518 reg = inb(iobase + REG_INTERRUPT);
519
520 if ((reg != 0x00) && (reg != 0xff)) {
521
522 if (reg & 0x04) {
523 bluecard_receive(info, 0x00);
524 outb(0x04, iobase + REG_INTERRUPT);
525 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
526 }
527
528 if (reg & 0x08) {
529 bluecard_receive(info, 0x10);
530 outb(0x08, iobase + REG_INTERRUPT);
531 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
532 }
533
534 if (reg & 0x01) {
535 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
536 outb(0x01, iobase + REG_INTERRUPT);
537 bluecard_write_wakeup(info);
538 }
539
540 if (reg & 0x02) {
541 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
542 outb(0x02, iobase + REG_INTERRUPT);
543 bluecard_write_wakeup(info);
544 }
545
546 }
547
548 /* Enable interrupt */
549 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
550 outb(info->ctrl_reg, iobase + REG_CONTROL);
551
552 spin_unlock(&(info->lock));
553
554 return IRQ_HANDLED;
555}
556
557
558
559/* ======================== Device specific HCI commands ======================== */
560
561
562static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
563{
564 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
565 struct sk_buff *skb;
566
567 /* Ericsson baud rate command */
568 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
569
570 if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
571 BT_ERR("Can't allocate mem for new packet");
572 return -1;
573 }
574
575 switch (baud) {
576 case 460800:
577 cmd[4] = 0x00;
578 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
579 break;
580 case 230400:
581 cmd[4] = 0x01;
582 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
583 break;
584 case 115200:
585 cmd[4] = 0x02;
586 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
587 break;
588 case 57600:
589 /* Fall through... */
590 default:
591 cmd[4] = 0x03;
592 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
593 break;
594 }
595
596 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
597
598 skb_queue_tail(&(info->txq), skb);
599
600 bluecard_write_wakeup(info);
601
602 return 0;
603}
604
605
606
607/* ======================== HCI interface ======================== */
608
609
610static int bluecard_hci_flush(struct hci_dev *hdev)
611{
612 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
613
614 /* Drop TX queue */
615 skb_queue_purge(&(info->txq));
616
617 return 0;
618}
619
620
621static int bluecard_hci_open(struct hci_dev *hdev)
622{
623 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
624 unsigned int iobase = info->p_dev->resource[0]->start;
625
626 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
627 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
628
629 if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
630 return 0;
631
632 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
633 /* Enable LED */
634 outb(0x08 | 0x20, iobase + 0x30);
635 }
636
637 return 0;
638}
639
640
641static int bluecard_hci_close(struct hci_dev *hdev)
642{
643 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
644 unsigned int iobase = info->p_dev->resource[0]->start;
645
646 if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
647 return 0;
648
649 bluecard_hci_flush(hdev);
650
651 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
652 /* Disable LED */
653 outb(0x00, iobase + 0x30);
654 }
655
656 return 0;
657}
658
659
660static int bluecard_hci_send_frame(struct sk_buff *skb)
661{
662 bluecard_info_t *info;
663 struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
664
665 if (!hdev) {
666 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
667 return -ENODEV;
668 }
669
670 info = (bluecard_info_t *)(hdev->driver_data);
671
672 switch (bt_cb(skb)->pkt_type) {
673 case HCI_COMMAND_PKT:
674 hdev->stat.cmd_tx++;
675 break;
676 case HCI_ACLDATA_PKT:
677 hdev->stat.acl_tx++;
678 break;
679 case HCI_SCODATA_PKT:
680 hdev->stat.sco_tx++;
681 break;
682 };
683
684 /* Prepend skb with frame type */
685 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
686 skb_queue_tail(&(info->txq), skb);
687
688 bluecard_write_wakeup(info);
689
690 return 0;
691}
692
693
694static void bluecard_hci_destruct(struct hci_dev *hdev)
695{
696}
697
698
699static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
700{
701 return -ENOIOCTLCMD;
702}
703
704
705
706/* ======================== Card services HCI interaction ======================== */
707
708
709static int bluecard_open(bluecard_info_t *info)
710{
711 unsigned int iobase = info->p_dev->resource[0]->start;
712 struct hci_dev *hdev;
713 unsigned char id;
714
715 spin_lock_init(&(info->lock));
716
717 init_timer(&(info->timer));
718 info->timer.function = &bluecard_activity_led_timeout;
719 info->timer.data = (u_long)info;
720
721 skb_queue_head_init(&(info->txq));
722
723 info->rx_state = RECV_WAIT_PACKET_TYPE;
724 info->rx_count = 0;
725 info->rx_skb = NULL;
726
727 /* Initialize HCI device */
728 hdev = hci_alloc_dev();
729 if (!hdev) {
730 BT_ERR("Can't allocate HCI device");
731 return -ENOMEM;
732 }
733
734 info->hdev = hdev;
735
736 hdev->bus = HCI_PCCARD;
737 hdev->driver_data = info;
738 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
739
740 hdev->open = bluecard_hci_open;
741 hdev->close = bluecard_hci_close;
742 hdev->flush = bluecard_hci_flush;
743 hdev->send = bluecard_hci_send_frame;
744 hdev->destruct = bluecard_hci_destruct;
745 hdev->ioctl = bluecard_hci_ioctl;
746
747 hdev->owner = THIS_MODULE;
748
749 id = inb(iobase + 0x30);
750
751 if ((id & 0x0f) == 0x02)
752 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
753
754 if (id & 0x10)
755 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
756
757 if (id & 0x20)
758 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
759
760 /* Reset card */
761 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
762 outb(info->ctrl_reg, iobase + REG_CONTROL);
763
764 /* Turn FPGA off */
765 outb(0x80, iobase + 0x30);
766
767 /* Wait some time */
768 msleep(10);
769
770 /* Turn FPGA on */
771 outb(0x00, iobase + 0x30);
772
773 /* Activate card */
774 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
775 outb(info->ctrl_reg, iobase + REG_CONTROL);
776
777 /* Enable interrupt */
778 outb(0xff, iobase + REG_INTERRUPT);
779 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
780 outb(info->ctrl_reg, iobase + REG_CONTROL);
781
782 if ((id & 0x0f) == 0x03) {
783 /* Disable RTS */
784 info->ctrl_reg |= REG_CONTROL_RTS;
785 outb(info->ctrl_reg, iobase + REG_CONTROL);
786
787 /* Set baud rate */
788 info->ctrl_reg |= 0x03;
789 outb(info->ctrl_reg, iobase + REG_CONTROL);
790
791 /* Enable RTS */
792 info->ctrl_reg &= ~REG_CONTROL_RTS;
793 outb(info->ctrl_reg, iobase + REG_CONTROL);
794
795 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
796 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
797 set_bit(XMIT_SENDING_READY, &(info->tx_state));
798 }
799
800 /* Start the RX buffers */
801 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
802 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
803
804 /* Signal that the hardware is ready */
805 set_bit(CARD_READY, &(info->hw_state));
806
807 /* Drop TX queue */
808 skb_queue_purge(&(info->txq));
809
810 /* Control the point at which RTS is enabled */
811 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
812
813 /* Timeout before it is safe to send the first HCI packet */
814 msleep(1250);
815
816 /* Register HCI device */
817 if (hci_register_dev(hdev) < 0) {
818 BT_ERR("Can't register HCI device");
819 info->hdev = NULL;
820 hci_free_dev(hdev);
821 return -ENODEV;
822 }
823
824 return 0;
825}
826
827
828static int bluecard_close(bluecard_info_t *info)
829{
830 unsigned int iobase = info->p_dev->resource[0]->start;
831 struct hci_dev *hdev = info->hdev;
832
833 if (!hdev)
834 return -ENODEV;
835
836 bluecard_hci_close(hdev);
837
838 clear_bit(CARD_READY, &(info->hw_state));
839
840 /* Reset card */
841 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
842 outb(info->ctrl_reg, iobase + REG_CONTROL);
843
844 /* Turn FPGA off */
845 outb(0x80, iobase + 0x30);
846
847 if (hci_unregister_dev(hdev) < 0)
848 BT_ERR("Can't unregister HCI device %s", hdev->name);
849
850 hci_free_dev(hdev);
851
852 return 0;
853}
854
855static int bluecard_probe(struct pcmcia_device *link)
856{
857 bluecard_info_t *info;
858
859 /* Create new info device */
860 info = kzalloc(sizeof(*info), GFP_KERNEL);
861 if (!info)
862 return -ENOMEM;
863
864 info->p_dev = link;
865 link->priv = info;
866
867 link->config_flags |= CONF_ENABLE_IRQ;
868
869 return bluecard_config(link);
870}
871
872
873static void bluecard_detach(struct pcmcia_device *link)
874{
875 bluecard_info_t *info = link->priv;
876
877 bluecard_release(link);
878 kfree(info);
879}
880
881
882static int bluecard_config(struct pcmcia_device *link)
883{
884 bluecard_info_t *info = link->priv;
885 int i, n;
886
887 link->config_index = 0x20;
888
889 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
890 link->resource[0]->end = 64;
891 link->io_lines = 6;
892
893 for (n = 0; n < 0x400; n += 0x40) {
894 link->resource[0]->start = n ^ 0x300;
895 i = pcmcia_request_io(link);
896 if (i == 0)
897 break;
898 }
899
900 if (i != 0)
901 goto failed;
902
903 i = pcmcia_request_irq(link, bluecard_interrupt);
904 if (i != 0)
905 goto failed;
906
907 i = pcmcia_enable_device(link);
908 if (i != 0)
909 goto failed;
910
911 if (bluecard_open(info) != 0)
912 goto failed;
913
914 return 0;
915
916failed:
917 bluecard_release(link);
918 return -ENODEV;
919}
920
921
922static void bluecard_release(struct pcmcia_device *link)
923{
924 bluecard_info_t *info = link->priv;
925
926 bluecard_close(info);
927
928 del_timer(&(info->timer));
929
930 pcmcia_disable_device(link);
931}
932
933static const struct pcmcia_device_id bluecard_ids[] = {
934 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
935 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
936 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
937 PCMCIA_DEVICE_NULL
938};
939MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
940
941static struct pcmcia_driver bluecard_driver = {
942 .owner = THIS_MODULE,
943 .name = "bluecard_cs",
944 .probe = bluecard_probe,
945 .remove = bluecard_detach,
946 .id_table = bluecard_ids,
947};
948
949static int __init init_bluecard_cs(void)
950{
951 return pcmcia_register_driver(&bluecard_driver);
952}
953
954
955static void __exit exit_bluecard_cs(void)
956{
957 pcmcia_unregister_driver(&bluecard_driver);
958}
959
960module_init(init_bluecard_cs);
961module_exit(exit_bluecard_cs);
1/*
2 *
3 * Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
4 *
5 * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation;
11 *
12 * Software distributed under the License is distributed on an "AS
13 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14 * implied. See the License for the specific language governing
15 * rights and limitations under the License.
16 *
17 * The initial developer of the original code is David A. Hinds
18 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
19 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
20 *
21 */
22
23#include <linux/module.h>
24
25#include <linux/kernel.h>
26#include <linux/init.h>
27#include <linux/slab.h>
28#include <linux/types.h>
29#include <linux/sched.h>
30#include <linux/delay.h>
31#include <linux/timer.h>
32#include <linux/errno.h>
33#include <linux/ptrace.h>
34#include <linux/ioport.h>
35#include <linux/spinlock.h>
36#include <linux/moduleparam.h>
37#include <linux/wait.h>
38
39#include <linux/skbuff.h>
40#include <linux/io.h>
41
42#include <pcmcia/cistpl.h>
43#include <pcmcia/ciscode.h>
44#include <pcmcia/ds.h>
45#include <pcmcia/cisreg.h>
46
47#include <net/bluetooth/bluetooth.h>
48#include <net/bluetooth/hci_core.h>
49
50
51
52/* ======================== Module parameters ======================== */
53
54
55MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
56MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
57MODULE_LICENSE("GPL");
58
59
60
61/* ======================== Local structures ======================== */
62
63
64struct bluecard_info {
65 struct pcmcia_device *p_dev;
66
67 struct hci_dev *hdev;
68
69 spinlock_t lock; /* For serializing operations */
70 struct timer_list timer; /* For LED control */
71
72 struct sk_buff_head txq;
73 unsigned long tx_state;
74
75 unsigned long rx_state;
76 unsigned long rx_count;
77 struct sk_buff *rx_skb;
78
79 unsigned char ctrl_reg;
80 unsigned long hw_state; /* Status of the hardware and LED control */
81};
82
83
84static int bluecard_config(struct pcmcia_device *link);
85static void bluecard_release(struct pcmcia_device *link);
86
87static void bluecard_detach(struct pcmcia_device *p_dev);
88
89
90/* Default baud rate: 57600, 115200, 230400 or 460800 */
91#define DEFAULT_BAUD_RATE 230400
92
93
94/* Hardware states */
95#define CARD_READY 1
96#define CARD_HAS_PCCARD_ID 4
97#define CARD_HAS_POWER_LED 5
98#define CARD_HAS_ACTIVITY_LED 6
99
100/* Transmit states */
101#define XMIT_SENDING 1
102#define XMIT_WAKEUP 2
103#define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */
104#define XMIT_BUF_ONE_READY 6
105#define XMIT_BUF_TWO_READY 7
106#define XMIT_SENDING_READY 8
107
108/* Receiver states */
109#define RECV_WAIT_PACKET_TYPE 0
110#define RECV_WAIT_EVENT_HEADER 1
111#define RECV_WAIT_ACL_HEADER 2
112#define RECV_WAIT_SCO_HEADER 3
113#define RECV_WAIT_DATA 4
114
115/* Special packet types */
116#define PKT_BAUD_RATE_57600 0x80
117#define PKT_BAUD_RATE_115200 0x81
118#define PKT_BAUD_RATE_230400 0x82
119#define PKT_BAUD_RATE_460800 0x83
120
121
122/* These are the register offsets */
123#define REG_COMMAND 0x20
124#define REG_INTERRUPT 0x21
125#define REG_CONTROL 0x22
126#define REG_RX_CONTROL 0x24
127#define REG_CARD_RESET 0x30
128#define REG_LED_CTRL 0x30
129
130/* REG_COMMAND */
131#define REG_COMMAND_TX_BUF_ONE 0x01
132#define REG_COMMAND_TX_BUF_TWO 0x02
133#define REG_COMMAND_RX_BUF_ONE 0x04
134#define REG_COMMAND_RX_BUF_TWO 0x08
135#define REG_COMMAND_RX_WIN_ONE 0x00
136#define REG_COMMAND_RX_WIN_TWO 0x10
137
138/* REG_CONTROL */
139#define REG_CONTROL_BAUD_RATE_57600 0x00
140#define REG_CONTROL_BAUD_RATE_115200 0x01
141#define REG_CONTROL_BAUD_RATE_230400 0x02
142#define REG_CONTROL_BAUD_RATE_460800 0x03
143#define REG_CONTROL_RTS 0x04
144#define REG_CONTROL_BT_ON 0x08
145#define REG_CONTROL_BT_RESET 0x10
146#define REG_CONTROL_BT_RES_PU 0x20
147#define REG_CONTROL_INTERRUPT 0x40
148#define REG_CONTROL_CARD_RESET 0x80
149
150/* REG_RX_CONTROL */
151#define RTS_LEVEL_SHIFT_BITS 0x02
152
153
154
155/* ======================== LED handling routines ======================== */
156
157
158static void bluecard_activity_led_timeout(u_long arg)
159{
160 struct bluecard_info *info = (struct bluecard_info *)arg;
161 unsigned int iobase = info->p_dev->resource[0]->start;
162
163 if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
164 return;
165
166 if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
167 /* Disable activity LED */
168 outb(0x08 | 0x20, iobase + 0x30);
169 } else {
170 /* Disable power LED */
171 outb(0x00, iobase + 0x30);
172 }
173}
174
175
176static void bluecard_enable_activity_led(struct bluecard_info *info)
177{
178 unsigned int iobase = info->p_dev->resource[0]->start;
179
180 if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
181 return;
182
183 if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
184 /* Enable activity LED */
185 outb(0x10 | 0x40, iobase + 0x30);
186
187 /* Stop the LED after HZ/4 */
188 mod_timer(&(info->timer), jiffies + HZ / 4);
189 } else {
190 /* Enable power LED */
191 outb(0x08 | 0x20, iobase + 0x30);
192
193 /* Stop the LED after HZ/2 */
194 mod_timer(&(info->timer), jiffies + HZ / 2);
195 }
196}
197
198
199
200/* ======================== Interrupt handling ======================== */
201
202
203static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
204{
205 int i, actual;
206
207 actual = (len > 15) ? 15 : len;
208
209 outb_p(actual, iobase + offset);
210
211 for (i = 0; i < actual; i++)
212 outb_p(buf[i], iobase + offset + i + 1);
213
214 return actual;
215}
216
217
218static void bluecard_write_wakeup(struct bluecard_info *info)
219{
220 if (!info) {
221 BT_ERR("Unknown device");
222 return;
223 }
224
225 if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
226 return;
227
228 if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
229 set_bit(XMIT_WAKEUP, &(info->tx_state));
230 return;
231 }
232
233 do {
234 unsigned int iobase = info->p_dev->resource[0]->start;
235 unsigned int offset;
236 unsigned char command;
237 unsigned long ready_bit;
238 register struct sk_buff *skb;
239 int len;
240
241 clear_bit(XMIT_WAKEUP, &(info->tx_state));
242
243 if (!pcmcia_dev_present(info->p_dev))
244 return;
245
246 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
247 if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
248 break;
249 offset = 0x10;
250 command = REG_COMMAND_TX_BUF_TWO;
251 ready_bit = XMIT_BUF_TWO_READY;
252 } else {
253 if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
254 break;
255 offset = 0x00;
256 command = REG_COMMAND_TX_BUF_ONE;
257 ready_bit = XMIT_BUF_ONE_READY;
258 }
259
260 skb = skb_dequeue(&(info->txq));
261 if (!skb)
262 break;
263
264 if (hci_skb_pkt_type(skb) & 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 (hci_skb_pkt_type(skb) & 0x80) {
283 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
284 DEFINE_WAIT(wait);
285
286 unsigned char baud_reg;
287
288 switch (hci_skb_pkt_type(skb)) {
289 case PKT_BAUD_RATE_460800:
290 baud_reg = REG_CONTROL_BAUD_RATE_460800;
291 break;
292 case PKT_BAUD_RATE_230400:
293 baud_reg = REG_CONTROL_BAUD_RATE_230400;
294 break;
295 case PKT_BAUD_RATE_115200:
296 baud_reg = REG_CONTROL_BAUD_RATE_115200;
297 break;
298 case PKT_BAUD_RATE_57600:
299 /* Fall through... */
300 default:
301 baud_reg = REG_CONTROL_BAUD_RATE_57600;
302 break;
303 }
304
305 /* Wait until the command reaches the baseband */
306 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
307 schedule_timeout(HZ/10);
308 finish_wait(&wq, &wait);
309
310 /* Set baud on baseband */
311 info->ctrl_reg &= ~0x03;
312 info->ctrl_reg |= baud_reg;
313 outb(info->ctrl_reg, iobase + REG_CONTROL);
314
315 /* Enable RTS */
316 info->ctrl_reg &= ~REG_CONTROL_RTS;
317 outb(info->ctrl_reg, iobase + REG_CONTROL);
318
319 /* Wait before the next HCI packet can be send */
320 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
321 schedule_timeout(HZ);
322 finish_wait(&wq, &wait);
323 }
324
325 if (len == skb->len) {
326 kfree_skb(skb);
327 } else {
328 skb_pull(skb, len);
329 skb_queue_head(&(info->txq), skb);
330 }
331
332 info->hdev->stat.byte_tx += len;
333
334 /* Change buffer */
335 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
336
337 } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
338
339 clear_bit(XMIT_SENDING, &(info->tx_state));
340}
341
342
343static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
344{
345 int i, n, len;
346
347 outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
348
349 len = inb(iobase + offset);
350 n = 0;
351 i = 1;
352
353 while (n < len) {
354
355 if (i == 16) {
356 outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
357 i = 0;
358 }
359
360 buf[n] = inb(iobase + offset + i);
361
362 n++;
363 i++;
364
365 }
366
367 return len;
368}
369
370
371static void bluecard_receive(struct bluecard_info *info,
372 unsigned int offset)
373{
374 unsigned int iobase;
375 unsigned char buf[31];
376 int i, len;
377
378 if (!info) {
379 BT_ERR("Unknown device");
380 return;
381 }
382
383 iobase = info->p_dev->resource[0]->start;
384
385 if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
386 bluecard_enable_activity_led(info);
387
388 len = bluecard_read(iobase, offset, buf, sizeof(buf));
389
390 for (i = 0; i < len; i++) {
391
392 /* Allocate packet */
393 if (!info->rx_skb) {
394 info->rx_state = RECV_WAIT_PACKET_TYPE;
395 info->rx_count = 0;
396 info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
397 if (!info->rx_skb) {
398 BT_ERR("Can't allocate mem for new packet");
399 return;
400 }
401 }
402
403 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
404
405 hci_skb_pkt_type(info->rx_skb) = buf[i];
406
407 switch (hci_skb_pkt_type(info->rx_skb)) {
408
409 case 0x00:
410 /* init packet */
411 if (offset != 0x00) {
412 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
413 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
414 set_bit(XMIT_SENDING_READY, &(info->tx_state));
415 bluecard_write_wakeup(info);
416 }
417
418 kfree_skb(info->rx_skb);
419 info->rx_skb = NULL;
420 break;
421
422 case HCI_EVENT_PKT:
423 info->rx_state = RECV_WAIT_EVENT_HEADER;
424 info->rx_count = HCI_EVENT_HDR_SIZE;
425 break;
426
427 case HCI_ACLDATA_PKT:
428 info->rx_state = RECV_WAIT_ACL_HEADER;
429 info->rx_count = HCI_ACL_HDR_SIZE;
430 break;
431
432 case HCI_SCODATA_PKT:
433 info->rx_state = RECV_WAIT_SCO_HEADER;
434 info->rx_count = HCI_SCO_HDR_SIZE;
435 break;
436
437 default:
438 /* unknown packet */
439 BT_ERR("Unknown HCI packet with type 0x%02x received",
440 hci_skb_pkt_type(info->rx_skb));
441 info->hdev->stat.err_rx++;
442
443 kfree_skb(info->rx_skb);
444 info->rx_skb = NULL;
445 break;
446
447 }
448
449 } else {
450
451 *skb_put(info->rx_skb, 1) = buf[i];
452 info->rx_count--;
453
454 if (info->rx_count == 0) {
455
456 int dlen;
457 struct hci_event_hdr *eh;
458 struct hci_acl_hdr *ah;
459 struct hci_sco_hdr *sh;
460
461 switch (info->rx_state) {
462
463 case RECV_WAIT_EVENT_HEADER:
464 eh = hci_event_hdr(info->rx_skb);
465 info->rx_state = RECV_WAIT_DATA;
466 info->rx_count = eh->plen;
467 break;
468
469 case RECV_WAIT_ACL_HEADER:
470 ah = hci_acl_hdr(info->rx_skb);
471 dlen = __le16_to_cpu(ah->dlen);
472 info->rx_state = RECV_WAIT_DATA;
473 info->rx_count = dlen;
474 break;
475
476 case RECV_WAIT_SCO_HEADER:
477 sh = hci_sco_hdr(info->rx_skb);
478 info->rx_state = RECV_WAIT_DATA;
479 info->rx_count = sh->dlen;
480 break;
481
482 case RECV_WAIT_DATA:
483 hci_recv_frame(info->hdev, info->rx_skb);
484 info->rx_skb = NULL;
485 break;
486
487 }
488
489 }
490
491 }
492
493
494 }
495
496 info->hdev->stat.byte_rx += len;
497}
498
499
500static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
501{
502 struct bluecard_info *info = dev_inst;
503 unsigned int iobase;
504 unsigned char reg;
505
506 if (!info || !info->hdev)
507 /* our irq handler is shared */
508 return IRQ_NONE;
509
510 if (!test_bit(CARD_READY, &(info->hw_state)))
511 return IRQ_HANDLED;
512
513 iobase = info->p_dev->resource[0]->start;
514
515 spin_lock(&(info->lock));
516
517 /* Disable interrupt */
518 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
519 outb(info->ctrl_reg, iobase + REG_CONTROL);
520
521 reg = inb(iobase + REG_INTERRUPT);
522
523 if ((reg != 0x00) && (reg != 0xff)) {
524
525 if (reg & 0x04) {
526 bluecard_receive(info, 0x00);
527 outb(0x04, iobase + REG_INTERRUPT);
528 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
529 }
530
531 if (reg & 0x08) {
532 bluecard_receive(info, 0x10);
533 outb(0x08, iobase + REG_INTERRUPT);
534 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
535 }
536
537 if (reg & 0x01) {
538 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
539 outb(0x01, iobase + REG_INTERRUPT);
540 bluecard_write_wakeup(info);
541 }
542
543 if (reg & 0x02) {
544 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
545 outb(0x02, iobase + REG_INTERRUPT);
546 bluecard_write_wakeup(info);
547 }
548
549 }
550
551 /* Enable interrupt */
552 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
553 outb(info->ctrl_reg, iobase + REG_CONTROL);
554
555 spin_unlock(&(info->lock));
556
557 return IRQ_HANDLED;
558}
559
560
561
562/* ======================== Device specific HCI commands ======================== */
563
564
565static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
566{
567 struct bluecard_info *info = hci_get_drvdata(hdev);
568 struct sk_buff *skb;
569
570 /* Ericsson baud rate command */
571 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
572
573 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
574 if (!skb) {
575 BT_ERR("Can't allocate mem for new packet");
576 return -1;
577 }
578
579 switch (baud) {
580 case 460800:
581 cmd[4] = 0x00;
582 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
583 break;
584 case 230400:
585 cmd[4] = 0x01;
586 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
587 break;
588 case 115200:
589 cmd[4] = 0x02;
590 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
591 break;
592 case 57600:
593 /* Fall through... */
594 default:
595 cmd[4] = 0x03;
596 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
597 break;
598 }
599
600 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
601
602 skb_queue_tail(&(info->txq), skb);
603
604 bluecard_write_wakeup(info);
605
606 return 0;
607}
608
609
610
611/* ======================== HCI interface ======================== */
612
613
614static int bluecard_hci_flush(struct hci_dev *hdev)
615{
616 struct bluecard_info *info = hci_get_drvdata(hdev);
617
618 /* Drop TX queue */
619 skb_queue_purge(&(info->txq));
620
621 return 0;
622}
623
624
625static int bluecard_hci_open(struct hci_dev *hdev)
626{
627 struct bluecard_info *info = hci_get_drvdata(hdev);
628
629 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
630 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
631
632 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
633 unsigned int iobase = info->p_dev->resource[0]->start;
634
635 /* Enable LED */
636 outb(0x08 | 0x20, iobase + 0x30);
637 }
638
639 return 0;
640}
641
642
643static int bluecard_hci_close(struct hci_dev *hdev)
644{
645 struct bluecard_info *info = hci_get_drvdata(hdev);
646
647 bluecard_hci_flush(hdev);
648
649 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
650 unsigned int iobase = info->p_dev->resource[0]->start;
651
652 /* Disable LED */
653 outb(0x00, iobase + 0x30);
654 }
655
656 return 0;
657}
658
659
660static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
661{
662 struct bluecard_info *info = hci_get_drvdata(hdev);
663
664 switch (hci_skb_pkt_type(skb)) {
665 case HCI_COMMAND_PKT:
666 hdev->stat.cmd_tx++;
667 break;
668 case HCI_ACLDATA_PKT:
669 hdev->stat.acl_tx++;
670 break;
671 case HCI_SCODATA_PKT:
672 hdev->stat.sco_tx++;
673 break;
674 }
675
676 /* Prepend skb with frame type */
677 memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
678 skb_queue_tail(&(info->txq), skb);
679
680 bluecard_write_wakeup(info);
681
682 return 0;
683}
684
685
686
687/* ======================== Card services HCI interaction ======================== */
688
689
690static int bluecard_open(struct bluecard_info *info)
691{
692 unsigned int iobase = info->p_dev->resource[0]->start;
693 struct hci_dev *hdev;
694 unsigned char id;
695
696 spin_lock_init(&(info->lock));
697
698 init_timer(&(info->timer));
699 info->timer.function = &bluecard_activity_led_timeout;
700 info->timer.data = (u_long)info;
701
702 skb_queue_head_init(&(info->txq));
703
704 info->rx_state = RECV_WAIT_PACKET_TYPE;
705 info->rx_count = 0;
706 info->rx_skb = NULL;
707
708 /* Initialize HCI device */
709 hdev = hci_alloc_dev();
710 if (!hdev) {
711 BT_ERR("Can't allocate HCI device");
712 return -ENOMEM;
713 }
714
715 info->hdev = hdev;
716
717 hdev->bus = HCI_PCCARD;
718 hci_set_drvdata(hdev, info);
719 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
720
721 hdev->open = bluecard_hci_open;
722 hdev->close = bluecard_hci_close;
723 hdev->flush = bluecard_hci_flush;
724 hdev->send = bluecard_hci_send_frame;
725
726 id = inb(iobase + 0x30);
727
728 if ((id & 0x0f) == 0x02)
729 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
730
731 if (id & 0x10)
732 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
733
734 if (id & 0x20)
735 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
736
737 /* Reset card */
738 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
739 outb(info->ctrl_reg, iobase + REG_CONTROL);
740
741 /* Turn FPGA off */
742 outb(0x80, iobase + 0x30);
743
744 /* Wait some time */
745 msleep(10);
746
747 /* Turn FPGA on */
748 outb(0x00, iobase + 0x30);
749
750 /* Activate card */
751 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
752 outb(info->ctrl_reg, iobase + REG_CONTROL);
753
754 /* Enable interrupt */
755 outb(0xff, iobase + REG_INTERRUPT);
756 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
757 outb(info->ctrl_reg, iobase + REG_CONTROL);
758
759 if ((id & 0x0f) == 0x03) {
760 /* Disable RTS */
761 info->ctrl_reg |= REG_CONTROL_RTS;
762 outb(info->ctrl_reg, iobase + REG_CONTROL);
763
764 /* Set baud rate */
765 info->ctrl_reg |= 0x03;
766 outb(info->ctrl_reg, iobase + REG_CONTROL);
767
768 /* Enable RTS */
769 info->ctrl_reg &= ~REG_CONTROL_RTS;
770 outb(info->ctrl_reg, iobase + REG_CONTROL);
771
772 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
773 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
774 set_bit(XMIT_SENDING_READY, &(info->tx_state));
775 }
776
777 /* Start the RX buffers */
778 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
779 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
780
781 /* Signal that the hardware is ready */
782 set_bit(CARD_READY, &(info->hw_state));
783
784 /* Drop TX queue */
785 skb_queue_purge(&(info->txq));
786
787 /* Control the point at which RTS is enabled */
788 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
789
790 /* Timeout before it is safe to send the first HCI packet */
791 msleep(1250);
792
793 /* Register HCI device */
794 if (hci_register_dev(hdev) < 0) {
795 BT_ERR("Can't register HCI device");
796 info->hdev = NULL;
797 hci_free_dev(hdev);
798 return -ENODEV;
799 }
800
801 return 0;
802}
803
804
805static int bluecard_close(struct bluecard_info *info)
806{
807 unsigned int iobase = info->p_dev->resource[0]->start;
808 struct hci_dev *hdev = info->hdev;
809
810 if (!hdev)
811 return -ENODEV;
812
813 bluecard_hci_close(hdev);
814
815 clear_bit(CARD_READY, &(info->hw_state));
816
817 /* Reset card */
818 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
819 outb(info->ctrl_reg, iobase + REG_CONTROL);
820
821 /* Turn FPGA off */
822 outb(0x80, iobase + 0x30);
823
824 hci_unregister_dev(hdev);
825 hci_free_dev(hdev);
826
827 return 0;
828}
829
830static int bluecard_probe(struct pcmcia_device *link)
831{
832 struct bluecard_info *info;
833
834 /* Create new info device */
835 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
836 if (!info)
837 return -ENOMEM;
838
839 info->p_dev = link;
840 link->priv = info;
841
842 link->config_flags |= CONF_ENABLE_IRQ;
843
844 return bluecard_config(link);
845}
846
847
848static void bluecard_detach(struct pcmcia_device *link)
849{
850 bluecard_release(link);
851}
852
853
854static int bluecard_config(struct pcmcia_device *link)
855{
856 struct bluecard_info *info = link->priv;
857 int i, n;
858
859 link->config_index = 0x20;
860
861 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
862 link->resource[0]->end = 64;
863 link->io_lines = 6;
864
865 for (n = 0; n < 0x400; n += 0x40) {
866 link->resource[0]->start = n ^ 0x300;
867 i = pcmcia_request_io(link);
868 if (i == 0)
869 break;
870 }
871
872 if (i != 0)
873 goto failed;
874
875 i = pcmcia_request_irq(link, bluecard_interrupt);
876 if (i != 0)
877 goto failed;
878
879 i = pcmcia_enable_device(link);
880 if (i != 0)
881 goto failed;
882
883 if (bluecard_open(info) != 0)
884 goto failed;
885
886 return 0;
887
888failed:
889 bluecard_release(link);
890 return -ENODEV;
891}
892
893
894static void bluecard_release(struct pcmcia_device *link)
895{
896 struct bluecard_info *info = link->priv;
897
898 bluecard_close(info);
899
900 del_timer_sync(&(info->timer));
901
902 pcmcia_disable_device(link);
903}
904
905static const struct pcmcia_device_id bluecard_ids[] = {
906 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
907 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
908 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
909 PCMCIA_DEVICE_NULL
910};
911MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
912
913static struct pcmcia_driver bluecard_driver = {
914 .owner = THIS_MODULE,
915 .name = "bluecard_cs",
916 .probe = bluecard_probe,
917 .remove = bluecard_detach,
918 .id_table = bluecard_ids,
919};
920module_pcmcia_driver(bluecard_driver);