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Linux 3.11-rc3
[cris-mirror.git] / drivers / bluetooth / bluecard_cs.c
blob6c3e3d43c718a1d756c9308a8a135bd9e64a2e32
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 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
497 static 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
562 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
563 {
564 bluecard_info_t *info = hci_get_drvdata(hdev);
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
610 static int bluecard_hci_flush(struct hci_dev *hdev)
611 {
612 bluecard_info_t *info = hci_get_drvdata(hdev);
613
614 /* Drop TX queue */
615 skb_queue_purge(&(info->txq));
616
617 return 0;
618 }
619
620
621 static int bluecard_hci_open(struct hci_dev *hdev)
622 {
623 bluecard_info_t *info = hci_get_drvdata(hdev);
624
625 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
626 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
627
628 if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
629 return 0;
630
631 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
632 unsigned int iobase = info->p_dev->resource[0]->start;
633
634 /* Enable LED */
635 outb(0x08 | 0x20, iobase + 0x30);
636 }
637
638 return 0;
639 }
640
641
642 static int bluecard_hci_close(struct hci_dev *hdev)
643 {
644 bluecard_info_t *info = hci_get_drvdata(hdev);
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 unsigned int iobase = info->p_dev->resource[0]->start;
653
654 /* Disable LED */
655 outb(0x00, iobase + 0x30);
656 }
657
658 return 0;
659 }
660
661
662 static int bluecard_hci_send_frame(struct sk_buff *skb)
663 {
664 bluecard_info_t *info;
665 struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
666
667 if (!hdev) {
668 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
669 return -ENODEV;
670 }
671
672 info = hci_get_drvdata(hdev);
673
674 switch (bt_cb(skb)->pkt_type) {
675 case HCI_COMMAND_PKT:
676 hdev->stat.cmd_tx++;
677 break;
678 case HCI_ACLDATA_PKT:
679 hdev->stat.acl_tx++;
680 break;
681 case HCI_SCODATA_PKT:
682 hdev->stat.sco_tx++;
683 break;
684 }
685
686 /* Prepend skb with frame type */
687 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
688 skb_queue_tail(&(info->txq), skb);
689
690 bluecard_write_wakeup(info);
691
692 return 0;
693 }
694
695
696 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
697 {
698 return -ENOIOCTLCMD;
699 }
700
701
702
703 /* ======================== Card services HCI interaction ======================== */
704
705
706 static int bluecard_open(bluecard_info_t *info)
707 {
708 unsigned int iobase = info->p_dev->resource[0]->start;
709 struct hci_dev *hdev;
710 unsigned char id;
711
712 spin_lock_init(&(info->lock));
713
714 init_timer(&(info->timer));
715 info->timer.function = &bluecard_activity_led_timeout;
716 info->timer.data = (u_long)info;
717
718 skb_queue_head_init(&(info->txq));
719
720 info->rx_state = RECV_WAIT_PACKET_TYPE;
721 info->rx_count = 0;
722 info->rx_skb = NULL;
723
724 /* Initialize HCI device */
725 hdev = hci_alloc_dev();
726 if (!hdev) {
727 BT_ERR("Can't allocate HCI device");
728 return -ENOMEM;
729 }
730
731 info->hdev = hdev;
732
733 hdev->bus = HCI_PCCARD;
734 hci_set_drvdata(hdev, info);
735 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
736
737 hdev->open = bluecard_hci_open;
738 hdev->close = bluecard_hci_close;
739 hdev->flush = bluecard_hci_flush;
740 hdev->send = bluecard_hci_send_frame;
741 hdev->ioctl = bluecard_hci_ioctl;
742
743 id = inb(iobase + 0x30);
744
745 if ((id & 0x0f) == 0x02)
746 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
747
748 if (id & 0x10)
749 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
750
751 if (id & 0x20)
752 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
753
754 /* Reset card */
755 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
756 outb(info->ctrl_reg, iobase + REG_CONTROL);
757
758 /* Turn FPGA off */
759 outb(0x80, iobase + 0x30);
760
761 /* Wait some time */
762 msleep(10);
763
764 /* Turn FPGA on */
765 outb(0x00, iobase + 0x30);
766
767 /* Activate card */
768 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
769 outb(info->ctrl_reg, iobase + REG_CONTROL);
770
771 /* Enable interrupt */
772 outb(0xff, iobase + REG_INTERRUPT);
773 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
774 outb(info->ctrl_reg, iobase + REG_CONTROL);
775
776 if ((id & 0x0f) == 0x03) {
777 /* Disable RTS */
778 info->ctrl_reg |= REG_CONTROL_RTS;
779 outb(info->ctrl_reg, iobase + REG_CONTROL);
780
781 /* Set baud rate */
782 info->ctrl_reg |= 0x03;
783 outb(info->ctrl_reg, iobase + REG_CONTROL);
784
785 /* Enable RTS */
786 info->ctrl_reg &= ~REG_CONTROL_RTS;
787 outb(info->ctrl_reg, iobase + REG_CONTROL);
788
789 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
790 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
791 set_bit(XMIT_SENDING_READY, &(info->tx_state));
792 }
793
794 /* Start the RX buffers */
795 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
796 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
797
798 /* Signal that the hardware is ready */
799 set_bit(CARD_READY, &(info->hw_state));
800
801 /* Drop TX queue */
802 skb_queue_purge(&(info->txq));
803
804 /* Control the point at which RTS is enabled */
805 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
806
807 /* Timeout before it is safe to send the first HCI packet */
808 msleep(1250);
809
810 /* Register HCI device */
811 if (hci_register_dev(hdev) < 0) {
812 BT_ERR("Can't register HCI device");
813 info->hdev = NULL;
814 hci_free_dev(hdev);
815 return -ENODEV;
816 }
817
818 return 0;
819 }
820
821
822 static int bluecard_close(bluecard_info_t *info)
823 {
824 unsigned int iobase = info->p_dev->resource[0]->start;
825 struct hci_dev *hdev = info->hdev;
826
827 if (!hdev)
828 return -ENODEV;
829
830 bluecard_hci_close(hdev);
831
832 clear_bit(CARD_READY, &(info->hw_state));
833
834 /* Reset card */
835 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
836 outb(info->ctrl_reg, iobase + REG_CONTROL);
837
838 /* Turn FPGA off */
839 outb(0x80, iobase + 0x30);
840
841 hci_unregister_dev(hdev);
842 hci_free_dev(hdev);
843
844 return 0;
845 }
846
847 static int bluecard_probe(struct pcmcia_device *link)
848 {
849 bluecard_info_t *info;
850
851 /* Create new info device */
852 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
853 if (!info)
854 return -ENOMEM;
855
856 info->p_dev = link;
857 link->priv = info;
858
859 link->config_flags |= CONF_ENABLE_IRQ;
860
861 return bluecard_config(link);
862 }
863
864
865 static void bluecard_detach(struct pcmcia_device *link)
866 {
867 bluecard_release(link);
868 }
869
870
871 static int bluecard_config(struct pcmcia_device *link)
872 {
873 bluecard_info_t *info = link->priv;
874 int i, n;
875
876 link->config_index = 0x20;
877
878 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
879 link->resource[0]->end = 64;
880 link->io_lines = 6;
881
882 for (n = 0; n < 0x400; n += 0x40) {
883 link->resource[0]->start = n ^ 0x300;
884 i = pcmcia_request_io(link);
885 if (i == 0)
886 break;
887 }
888
889 if (i != 0)
890 goto failed;
891
892 i = pcmcia_request_irq(link, bluecard_interrupt);
893 if (i != 0)
894 goto failed;
895
896 i = pcmcia_enable_device(link);
897 if (i != 0)
898 goto failed;
899
900 if (bluecard_open(info) != 0)
901 goto failed;
902
903 return 0;
904
905 failed:
906 bluecard_release(link);
907 return -ENODEV;
908 }
909
910
911 static void bluecard_release(struct pcmcia_device *link)
912 {
913 bluecard_info_t *info = link->priv;
914
915 bluecard_close(info);
916
917 del_timer(&(info->timer));
918
919 pcmcia_disable_device(link);
920 }
921
922 static const struct pcmcia_device_id bluecard_ids[] = {
923 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
924 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
925 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
926 PCMCIA_DEVICE_NULL
927 };
928 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
929
930 static struct pcmcia_driver bluecard_driver = {
931 .owner = THIS_MODULE,
932 .name = "bluecard_cs",
933 .probe = bluecard_probe,
934 .remove = bluecard_detach,
935 .id_table = bluecard_ids,
936 };
937 module_pcmcia_driver(bluecard_driver);
CRIS linux kernel tree