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mmc: mxs: use standard flag for broken card detection
[linux-2.6/btrfs-unstable.git] / drivers / bluetooth / bluecard_cs.c
blob57427de864a657530ec92f1a54fe9e0d5c52938e
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 typedef 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
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 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
176 static 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
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(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 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
342 static 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
370 static 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 bt_cb(info->rx_skb)->pkt_type = buf[i];
403
404 switch (bt_cb(info->rx_skb)->pkt_type) {
405
406 case 0x00:
407 /* init packet */
408 if (offset != 0x00) {
409 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
410 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
411 set_bit(XMIT_SENDING_READY, &(info->tx_state));
412 bluecard_write_wakeup(info);
413 }
414
415 kfree_skb(info->rx_skb);
416 info->rx_skb = NULL;
417 break;
418
419 case HCI_EVENT_PKT:
420 info->rx_state = RECV_WAIT_EVENT_HEADER;
421 info->rx_count = HCI_EVENT_HDR_SIZE;
422 break;
423
424 case HCI_ACLDATA_PKT:
425 info->rx_state = RECV_WAIT_ACL_HEADER;
426 info->rx_count = HCI_ACL_HDR_SIZE;
427 break;
428
429 case HCI_SCODATA_PKT:
430 info->rx_state = RECV_WAIT_SCO_HEADER;
431 info->rx_count = HCI_SCO_HDR_SIZE;
432 break;
433
434 default:
435 /* unknown packet */
436 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
437 info->hdev->stat.err_rx++;
438
439 kfree_skb(info->rx_skb);
440 info->rx_skb = NULL;
441 break;
442
443 }
444
445 } else {
446
447 *skb_put(info->rx_skb, 1) = buf[i];
448 info->rx_count--;
449
450 if (info->rx_count == 0) {
451
452 int dlen;
453 struct hci_event_hdr *eh;
454 struct hci_acl_hdr *ah;
455 struct hci_sco_hdr *sh;
456
457 switch (info->rx_state) {
458
459 case RECV_WAIT_EVENT_HEADER:
460 eh = hci_event_hdr(info->rx_skb);
461 info->rx_state = RECV_WAIT_DATA;
462 info->rx_count = eh->plen;
463 break;
464
465 case RECV_WAIT_ACL_HEADER:
466 ah = hci_acl_hdr(info->rx_skb);
467 dlen = __le16_to_cpu(ah->dlen);
468 info->rx_state = RECV_WAIT_DATA;
469 info->rx_count = dlen;
470 break;
471
472 case RECV_WAIT_SCO_HEADER:
473 sh = hci_sco_hdr(info->rx_skb);
474 info->rx_state = RECV_WAIT_DATA;
475 info->rx_count = sh->dlen;
476 break;
477
478 case RECV_WAIT_DATA:
479 hci_recv_frame(info->hdev, info->rx_skb);
480 info->rx_skb = NULL;
481 break;
482
483 }
484
485 }
486
487 }
488
489
490 }
491
492 info->hdev->stat.byte_rx += len;
493 }
494
495
496 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
497 {
498 bluecard_info_t *info = dev_inst;
499 unsigned int iobase;
500 unsigned char reg;
501
502 if (!info || !info->hdev)
503 /* our irq handler is shared */
504 return IRQ_NONE;
505
506 if (!test_bit(CARD_READY, &(info->hw_state)))
507 return IRQ_HANDLED;
508
509 iobase = info->p_dev->resource[0]->start;
510
511 spin_lock(&(info->lock));
512
513 /* Disable interrupt */
514 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
515 outb(info->ctrl_reg, iobase + REG_CONTROL);
516
517 reg = inb(iobase + REG_INTERRUPT);
518
519 if ((reg != 0x00) && (reg != 0xff)) {
520
521 if (reg & 0x04) {
522 bluecard_receive(info, 0x00);
523 outb(0x04, iobase + REG_INTERRUPT);
524 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
525 }
526
527 if (reg & 0x08) {
528 bluecard_receive(info, 0x10);
529 outb(0x08, iobase + REG_INTERRUPT);
530 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
531 }
532
533 if (reg & 0x01) {
534 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
535 outb(0x01, iobase + REG_INTERRUPT);
536 bluecard_write_wakeup(info);
537 }
538
539 if (reg & 0x02) {
540 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
541 outb(0x02, iobase + REG_INTERRUPT);
542 bluecard_write_wakeup(info);
543 }
544
545 }
546
547 /* Enable interrupt */
548 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
549 outb(info->ctrl_reg, iobase + REG_CONTROL);
550
551 spin_unlock(&(info->lock));
552
553 return IRQ_HANDLED;
554 }
555
556
557
558 /* ======================== Device specific HCI commands ======================== */
559
560
561 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
562 {
563 bluecard_info_t *info = hci_get_drvdata(hdev);
564 struct sk_buff *skb;
565
566 /* Ericsson baud rate command */
567 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
568
569 if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
570 BT_ERR("Can't allocate mem for new packet");
571 return -1;
572 }
573
574 switch (baud) {
575 case 460800:
576 cmd[4] = 0x00;
577 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
578 break;
579 case 230400:
580 cmd[4] = 0x01;
581 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
582 break;
583 case 115200:
584 cmd[4] = 0x02;
585 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
586 break;
587 case 57600:
588 /* Fall through... */
589 default:
590 cmd[4] = 0x03;
591 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
592 break;
593 }
594
595 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
596
597 skb_queue_tail(&(info->txq), skb);
598
599 bluecard_write_wakeup(info);
600
601 return 0;
602 }
603
604
605
606 /* ======================== HCI interface ======================== */
607
608
609 static int bluecard_hci_flush(struct hci_dev *hdev)
610 {
611 bluecard_info_t *info = hci_get_drvdata(hdev);
612
613 /* Drop TX queue */
614 skb_queue_purge(&(info->txq));
615
616 return 0;
617 }
618
619
620 static int bluecard_hci_open(struct hci_dev *hdev)
621 {
622 bluecard_info_t *info = hci_get_drvdata(hdev);
623
624 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
625 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
626
627 if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
628 return 0;
629
630 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
631 unsigned int iobase = info->p_dev->resource[0]->start;
632
633 /* Enable LED */
634 outb(0x08 | 0x20, iobase + 0x30);
635 }
636
637 return 0;
638 }
639
640
641 static int bluecard_hci_close(struct hci_dev *hdev)
642 {
643 bluecard_info_t *info = hci_get_drvdata(hdev);
644
645 if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
646 return 0;
647
648 bluecard_hci_flush(hdev);
649
650 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
651 unsigned int iobase = info->p_dev->resource[0]->start;
652
653 /* Disable LED */
654 outb(0x00, iobase + 0x30);
655 }
656
657 return 0;
658 }
659
660
661 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
662 {
663 bluecard_info_t *info = hci_get_drvdata(hdev);
664
665 switch (bt_cb(skb)->pkt_type) {
666 case HCI_COMMAND_PKT:
667 hdev->stat.cmd_tx++;
668 break;
669 case HCI_ACLDATA_PKT:
670 hdev->stat.acl_tx++;
671 break;
672 case HCI_SCODATA_PKT:
673 hdev->stat.sco_tx++;
674 break;
675 }
676
677 /* Prepend skb with frame type */
678 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
679 skb_queue_tail(&(info->txq), skb);
680
681 bluecard_write_wakeup(info);
682
683 return 0;
684 }
685
686
687
688 /* ======================== Card services HCI interaction ======================== */
689
690
691 static int bluecard_open(bluecard_info_t *info)
692 {
693 unsigned int iobase = info->p_dev->resource[0]->start;
694 struct hci_dev *hdev;
695 unsigned char id;
696
697 spin_lock_init(&(info->lock));
698
699 init_timer(&(info->timer));
700 info->timer.function = &bluecard_activity_led_timeout;
701 info->timer.data = (u_long)info;
702
703 skb_queue_head_init(&(info->txq));
704
705 info->rx_state = RECV_WAIT_PACKET_TYPE;
706 info->rx_count = 0;
707 info->rx_skb = NULL;
708
709 /* Initialize HCI device */
710 hdev = hci_alloc_dev();
711 if (!hdev) {
712 BT_ERR("Can't allocate HCI device");
713 return -ENOMEM;
714 }
715
716 info->hdev = hdev;
717
718 hdev->bus = HCI_PCCARD;
719 hci_set_drvdata(hdev, info);
720 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
721
722 hdev->open = bluecard_hci_open;
723 hdev->close = bluecard_hci_close;
724 hdev->flush = bluecard_hci_flush;
725 hdev->send = bluecard_hci_send_frame;
726
727 id = inb(iobase + 0x30);
728
729 if ((id & 0x0f) == 0x02)
730 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
731
732 if (id & 0x10)
733 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
734
735 if (id & 0x20)
736 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
737
738 /* Reset card */
739 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
740 outb(info->ctrl_reg, iobase + REG_CONTROL);
741
742 /* Turn FPGA off */
743 outb(0x80, iobase + 0x30);
744
745 /* Wait some time */
746 msleep(10);
747
748 /* Turn FPGA on */
749 outb(0x00, iobase + 0x30);
750
751 /* Activate card */
752 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
753 outb(info->ctrl_reg, iobase + REG_CONTROL);
754
755 /* Enable interrupt */
756 outb(0xff, iobase + REG_INTERRUPT);
757 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
758 outb(info->ctrl_reg, iobase + REG_CONTROL);
759
760 if ((id & 0x0f) == 0x03) {
761 /* Disable RTS */
762 info->ctrl_reg |= REG_CONTROL_RTS;
763 outb(info->ctrl_reg, iobase + REG_CONTROL);
764
765 /* Set baud rate */
766 info->ctrl_reg |= 0x03;
767 outb(info->ctrl_reg, iobase + REG_CONTROL);
768
769 /* Enable RTS */
770 info->ctrl_reg &= ~REG_CONTROL_RTS;
771 outb(info->ctrl_reg, iobase + REG_CONTROL);
772
773 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
774 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
775 set_bit(XMIT_SENDING_READY, &(info->tx_state));
776 }
777
778 /* Start the RX buffers */
779 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
780 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
781
782 /* Signal that the hardware is ready */
783 set_bit(CARD_READY, &(info->hw_state));
784
785 /* Drop TX queue */
786 skb_queue_purge(&(info->txq));
787
788 /* Control the point at which RTS is enabled */
789 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
790
791 /* Timeout before it is safe to send the first HCI packet */
792 msleep(1250);
793
794 /* Register HCI device */
795 if (hci_register_dev(hdev) < 0) {
796 BT_ERR("Can't register HCI device");
797 info->hdev = NULL;
798 hci_free_dev(hdev);
799 return -ENODEV;
800 }
801
802 return 0;
803 }
804
805
806 static int bluecard_close(bluecard_info_t *info)
807 {
808 unsigned int iobase = info->p_dev->resource[0]->start;
809 struct hci_dev *hdev = info->hdev;
810
811 if (!hdev)
812 return -ENODEV;
813
814 bluecard_hci_close(hdev);
815
816 clear_bit(CARD_READY, &(info->hw_state));
817
818 /* Reset card */
819 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
820 outb(info->ctrl_reg, iobase + REG_CONTROL);
821
822 /* Turn FPGA off */
823 outb(0x80, iobase + 0x30);
824
825 hci_unregister_dev(hdev);
826 hci_free_dev(hdev);
827
828 return 0;
829 }
830
831 static int bluecard_probe(struct pcmcia_device *link)
832 {
833 bluecard_info_t *info;
834
835 /* Create new info device */
836 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
837 if (!info)
838 return -ENOMEM;
839
840 info->p_dev = link;
841 link->priv = info;
842
843 link->config_flags |= CONF_ENABLE_IRQ;
844
845 return bluecard_config(link);
846 }
847
848
849 static void bluecard_detach(struct pcmcia_device *link)
850 {
851 bluecard_release(link);
852 }
853
854
855 static int bluecard_config(struct pcmcia_device *link)
856 {
857 bluecard_info_t *info = link->priv;
858 int i, n;
859
860 link->config_index = 0x20;
861
862 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
863 link->resource[0]->end = 64;
864 link->io_lines = 6;
865
866 for (n = 0; n < 0x400; n += 0x40) {
867 link->resource[0]->start = n ^ 0x300;
868 i = pcmcia_request_io(link);
869 if (i == 0)
870 break;
871 }
872
873 if (i != 0)
874 goto failed;
875
876 i = pcmcia_request_irq(link, bluecard_interrupt);
877 if (i != 0)
878 goto failed;
879
880 i = pcmcia_enable_device(link);
881 if (i != 0)
882 goto failed;
883
884 if (bluecard_open(info) != 0)
885 goto failed;
886
887 return 0;
888
889 failed:
890 bluecard_release(link);
891 return -ENODEV;
892 }
893
894
895 static void bluecard_release(struct pcmcia_device *link)
896 {
897 bluecard_info_t *info = link->priv;
898
899 bluecard_close(info);
900
901 del_timer(&(info->timer));
902
903 pcmcia_disable_device(link);
904 }
905
906 static const struct pcmcia_device_id bluecard_ids[] = {
907 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
908 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
909 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
910 PCMCIA_DEVICE_NULL
911 };
912 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
913
914 static struct pcmcia_driver bluecard_driver = {
915 .owner = THIS_MODULE,
916 .name = "bluecard_cs",
917 .probe = bluecard_probe,
918 .remove = bluecard_detach,
919 .id_table = bluecard_ids,
920 };
921 module_pcmcia_driver(bluecard_driver);
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