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r8152: fix tx packets accounting
[linux/fpc-iii.git] / drivers / bluetooth / bluecard_cs.c
blobc0b3b55769921da4d8bd9c52c12924cfa06908cc
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_HAS_PCCARD_ID 4
97 #define CARD_HAS_POWER_LED 5
98 #define CARD_HAS_ACTIVITY_LED 6
99
100 /* Transmit states */
101 #define XMIT_SENDING 1
102 #define XMIT_WAKEUP 2
103 #define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */
104 #define XMIT_BUF_ONE_READY 6
105 #define XMIT_BUF_TWO_READY 7
106 #define XMIT_SENDING_READY 8
107
108 /* Receiver states */
109 #define RECV_WAIT_PACKET_TYPE 0
110 #define RECV_WAIT_EVENT_HEADER 1
111 #define RECV_WAIT_ACL_HEADER 2
112 #define RECV_WAIT_SCO_HEADER 3
113 #define RECV_WAIT_DATA 4
114
115 /* Special packet types */
116 #define PKT_BAUD_RATE_57600 0x80
117 #define PKT_BAUD_RATE_115200 0x81
118 #define PKT_BAUD_RATE_230400 0x82
119 #define PKT_BAUD_RATE_460800 0x83
120
121
122 /* These are the register offsets */
123 #define REG_COMMAND 0x20
124 #define REG_INTERRUPT 0x21
125 #define REG_CONTROL 0x22
126 #define REG_RX_CONTROL 0x24
127 #define REG_CARD_RESET 0x30
128 #define REG_LED_CTRL 0x30
129
130 /* REG_COMMAND */
131 #define REG_COMMAND_TX_BUF_ONE 0x01
132 #define REG_COMMAND_TX_BUF_TWO 0x02
133 #define REG_COMMAND_RX_BUF_ONE 0x04
134 #define REG_COMMAND_RX_BUF_TWO 0x08
135 #define REG_COMMAND_RX_WIN_ONE 0x00
136 #define REG_COMMAND_RX_WIN_TWO 0x10
137
138 /* REG_CONTROL */
139 #define REG_CONTROL_BAUD_RATE_57600 0x00
140 #define REG_CONTROL_BAUD_RATE_115200 0x01
141 #define REG_CONTROL_BAUD_RATE_230400 0x02
142 #define REG_CONTROL_BAUD_RATE_460800 0x03
143 #define REG_CONTROL_RTS 0x04
144 #define REG_CONTROL_BT_ON 0x08
145 #define REG_CONTROL_BT_RESET 0x10
146 #define REG_CONTROL_BT_RES_PU 0x20
147 #define REG_CONTROL_INTERRUPT 0x40
148 #define REG_CONTROL_CARD_RESET 0x80
149
150 /* REG_RX_CONTROL */
151 #define RTS_LEVEL_SHIFT_BITS 0x02
152
153
154
155 /* ======================== LED handling routines ======================== */
156
157
158 static void bluecard_activity_led_timeout(u_long arg)
159 {
160 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
176 static 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
203 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
204 {
205 int i, actual;
206
207 actual = (len > 15) ? 15 : len;
208
209 outb_p(actual, iobase + offset);
210
211 for (i = 0; i < actual; i++)
212 outb_p(buf[i], iobase + offset + i + 1);
213
214 return actual;
215 }
216
217
218 static void bluecard_write_wakeup(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
343 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
344 {
345 int i, n, len;
346
347 outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
348
349 len = inb(iobase + offset);
350 n = 0;
351 i = 1;
352
353 while (n < len) {
354
355 if (i == 16) {
356 outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
357 i = 0;
358 }
359
360 buf[n] = inb(iobase + offset + i);
361
362 n++;
363 i++;
364
365 }
366
367 return len;
368 }
369
370
371 static void bluecard_receive(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
500 static 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
565 static 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
614 static 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
625 static 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
643 static 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
660 static 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
690 static 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
805 static 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
830 static 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
848 static void bluecard_detach(struct pcmcia_device *link)
849 {
850 bluecard_release(link);
851 }
852
853
854 static 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
888 failed:
889 bluecard_release(link);
890 return -ENODEV;
891 }
892
893
894 static 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
905 static 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 };
911 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
912
913 static 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 };
920 module_pcmcia_driver(bluecard_driver);
Linux with added FPC-III support