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eCryptfs: NULL pointer dereference in ecryptfs_send_miscdev()
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / bluetooth / bluecard_cs.c
blobb0e569ba730d0e7ef1d8fafdcfee3ff20ab1a456
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 <asm/io.h>
41
42 #include <pcmcia/cs_types.h>
43 #include <pcmcia/cs.h>
44 #include <pcmcia/cistpl.h>
45 #include <pcmcia/ciscode.h>
46 #include <pcmcia/ds.h>
47 #include <pcmcia/cisreg.h>
48
49 #include <net/bluetooth/bluetooth.h>
50 #include <net/bluetooth/hci_core.h>
51
52
53
54 /* ======================== Module parameters ======================== */
55
56
57 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
58 MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
59 MODULE_LICENSE("GPL");
60
61
62
63 /* ======================== Local structures ======================== */
64
65
66 typedef struct bluecard_info_t {
67 struct pcmcia_device *p_dev;
68 dev_node_t node;
69
70 struct hci_dev *hdev;
71
72 spinlock_t lock; /* For serializing operations */
73 struct timer_list timer; /* For LED control */
74
75 struct sk_buff_head txq;
76 unsigned long tx_state;
77
78 unsigned long rx_state;
79 unsigned long rx_count;
80 struct sk_buff *rx_skb;
81
82 unsigned char ctrl_reg;
83 unsigned long hw_state; /* Status of the hardware and LED control */
84 } bluecard_info_t;
85
86
87 static int bluecard_config(struct pcmcia_device *link);
88 static void bluecard_release(struct pcmcia_device *link);
89
90 static void bluecard_detach(struct pcmcia_device *p_dev);
91
92
93 /* Default baud rate: 57600, 115200, 230400 or 460800 */
94 #define DEFAULT_BAUD_RATE 230400
95
96
97 /* Hardware states */
98 #define CARD_READY 1
99 #define CARD_HAS_PCCARD_ID 4
100 #define CARD_HAS_POWER_LED 5
101 #define CARD_HAS_ACTIVITY_LED 6
102
103 /* Transmit states */
104 #define XMIT_SENDING 1
105 #define XMIT_WAKEUP 2
106 #define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */
107 #define XMIT_BUF_ONE_READY 6
108 #define XMIT_BUF_TWO_READY 7
109 #define XMIT_SENDING_READY 8
110
111 /* Receiver states */
112 #define RECV_WAIT_PACKET_TYPE 0
113 #define RECV_WAIT_EVENT_HEADER 1
114 #define RECV_WAIT_ACL_HEADER 2
115 #define RECV_WAIT_SCO_HEADER 3
116 #define RECV_WAIT_DATA 4
117
118 /* Special packet types */
119 #define PKT_BAUD_RATE_57600 0x80
120 #define PKT_BAUD_RATE_115200 0x81
121 #define PKT_BAUD_RATE_230400 0x82
122 #define PKT_BAUD_RATE_460800 0x83
123
124
125 /* These are the register offsets */
126 #define REG_COMMAND 0x20
127 #define REG_INTERRUPT 0x21
128 #define REG_CONTROL 0x22
129 #define REG_RX_CONTROL 0x24
130 #define REG_CARD_RESET 0x30
131 #define REG_LED_CTRL 0x30
132
133 /* REG_COMMAND */
134 #define REG_COMMAND_TX_BUF_ONE 0x01
135 #define REG_COMMAND_TX_BUF_TWO 0x02
136 #define REG_COMMAND_RX_BUF_ONE 0x04
137 #define REG_COMMAND_RX_BUF_TWO 0x08
138 #define REG_COMMAND_RX_WIN_ONE 0x00
139 #define REG_COMMAND_RX_WIN_TWO 0x10
140
141 /* REG_CONTROL */
142 #define REG_CONTROL_BAUD_RATE_57600 0x00
143 #define REG_CONTROL_BAUD_RATE_115200 0x01
144 #define REG_CONTROL_BAUD_RATE_230400 0x02
145 #define REG_CONTROL_BAUD_RATE_460800 0x03
146 #define REG_CONTROL_RTS 0x04
147 #define REG_CONTROL_BT_ON 0x08
148 #define REG_CONTROL_BT_RESET 0x10
149 #define REG_CONTROL_BT_RES_PU 0x20
150 #define REG_CONTROL_INTERRUPT 0x40
151 #define REG_CONTROL_CARD_RESET 0x80
152
153 /* REG_RX_CONTROL */
154 #define RTS_LEVEL_SHIFT_BITS 0x02
155
156
157
158 /* ======================== LED handling routines ======================== */
159
160
161 static void bluecard_activity_led_timeout(u_long arg)
162 {
163 bluecard_info_t *info = (bluecard_info_t *)arg;
164 unsigned int iobase = info->p_dev->io.BasePort1;
165
166 if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
167 return;
168
169 if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
170 /* Disable activity LED */
171 outb(0x08 | 0x20, iobase + 0x30);
172 } else {
173 /* Disable power LED */
174 outb(0x00, iobase + 0x30);
175 }
176 }
177
178
179 static void bluecard_enable_activity_led(bluecard_info_t *info)
180 {
181 unsigned int iobase = info->p_dev->io.BasePort1;
182
183 if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
184 return;
185
186 if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
187 /* Enable activity LED */
188 outb(0x10 | 0x40, iobase + 0x30);
189
190 /* Stop the LED after HZ/4 */
191 mod_timer(&(info->timer), jiffies + HZ / 4);
192 } else {
193 /* Enable power LED */
194 outb(0x08 | 0x20, iobase + 0x30);
195
196 /* Stop the LED after HZ/2 */
197 mod_timer(&(info->timer), jiffies + HZ / 2);
198 }
199 }
200
201
202
203 /* ======================== Interrupt handling ======================== */
204
205
206 static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
207 {
208 int i, actual;
209
210 actual = (len > 15) ? 15 : len;
211
212 outb_p(actual, iobase + offset);
213
214 for (i = 0; i < actual; i++)
215 outb_p(buf[i], iobase + offset + i + 1);
216
217 return actual;
218 }
219
220
221 static void bluecard_write_wakeup(bluecard_info_t *info)
222 {
223 if (!info) {
224 BT_ERR("Unknown device");
225 return;
226 }
227
228 if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
229 return;
230
231 if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
232 set_bit(XMIT_WAKEUP, &(info->tx_state));
233 return;
234 }
235
236 do {
237 register unsigned int iobase = info->p_dev->io.BasePort1;
238 register unsigned int offset;
239 register unsigned char command;
240 register unsigned long ready_bit;
241 register struct sk_buff *skb;
242 register int len;
243
244 clear_bit(XMIT_WAKEUP, &(info->tx_state));
245
246 if (!pcmcia_dev_present(info->p_dev))
247 return;
248
249 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
250 if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
251 break;
252 offset = 0x10;
253 command = REG_COMMAND_TX_BUF_TWO;
254 ready_bit = XMIT_BUF_TWO_READY;
255 } else {
256 if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
257 break;
258 offset = 0x00;
259 command = REG_COMMAND_TX_BUF_ONE;
260 ready_bit = XMIT_BUF_ONE_READY;
261 }
262
263 if (!(skb = skb_dequeue(&(info->txq))))
264 break;
265
266 if (bt_cb(skb)->pkt_type & 0x80) {
267 /* Disable RTS */
268 info->ctrl_reg |= REG_CONTROL_RTS;
269 outb(info->ctrl_reg, iobase + REG_CONTROL);
270 }
271
272 /* Activate LED */
273 bluecard_enable_activity_led(info);
274
275 /* Send frame */
276 len = bluecard_write(iobase, offset, skb->data, skb->len);
277
278 /* Tell the FPGA to send the data */
279 outb_p(command, iobase + REG_COMMAND);
280
281 /* Mark the buffer as dirty */
282 clear_bit(ready_bit, &(info->tx_state));
283
284 if (bt_cb(skb)->pkt_type & 0x80) {
285 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
286 DEFINE_WAIT(wait);
287
288 unsigned char baud_reg;
289
290 switch (bt_cb(skb)->pkt_type) {
291 case PKT_BAUD_RATE_460800:
292 baud_reg = REG_CONTROL_BAUD_RATE_460800;
293 break;
294 case PKT_BAUD_RATE_230400:
295 baud_reg = REG_CONTROL_BAUD_RATE_230400;
296 break;
297 case PKT_BAUD_RATE_115200:
298 baud_reg = REG_CONTROL_BAUD_RATE_115200;
299 break;
300 case PKT_BAUD_RATE_57600:
301 /* Fall through... */
302 default:
303 baud_reg = REG_CONTROL_BAUD_RATE_57600;
304 break;
305 }
306
307 /* Wait until the command reaches the baseband */
308 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
309 schedule_timeout(HZ/10);
310 finish_wait(&wq, &wait);
311
312 /* Set baud on baseband */
313 info->ctrl_reg &= ~0x03;
314 info->ctrl_reg |= baud_reg;
315 outb(info->ctrl_reg, iobase + REG_CONTROL);
316
317 /* Enable RTS */
318 info->ctrl_reg &= ~REG_CONTROL_RTS;
319 outb(info->ctrl_reg, iobase + REG_CONTROL);
320
321 /* Wait before the next HCI packet can be send */
322 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
323 schedule_timeout(HZ);
324 finish_wait(&wq, &wait);
325 }
326
327 if (len == skb->len) {
328 kfree_skb(skb);
329 } else {
330 skb_pull(skb, len);
331 skb_queue_head(&(info->txq), skb);
332 }
333
334 info->hdev->stat.byte_tx += len;
335
336 /* Change buffer */
337 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
338
339 } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
340
341 clear_bit(XMIT_SENDING, &(info->tx_state));
342 }
343
344
345 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
346 {
347 int i, n, len;
348
349 outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
350
351 len = inb(iobase + offset);
352 n = 0;
353 i = 1;
354
355 while (n < len) {
356
357 if (i == 16) {
358 outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
359 i = 0;
360 }
361
362 buf[n] = inb(iobase + offset + i);
363
364 n++;
365 i++;
366
367 }
368
369 return len;
370 }
371
372
373 static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
374 {
375 unsigned int iobase;
376 unsigned char buf[31];
377 int i, len;
378
379 if (!info) {
380 BT_ERR("Unknown device");
381 return;
382 }
383
384 iobase = info->p_dev->io.BasePort1;
385
386 if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
387 bluecard_enable_activity_led(info);
388
389 len = bluecard_read(iobase, offset, buf, sizeof(buf));
390
391 for (i = 0; i < len; i++) {
392
393 /* Allocate packet */
394 if (info->rx_skb == NULL) {
395 info->rx_state = RECV_WAIT_PACKET_TYPE;
396 info->rx_count = 0;
397 if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
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 info->rx_skb->dev = (void *) info->hdev;
406 bt_cb(info->rx_skb)->pkt_type = buf[i];
407
408 switch (bt_cb(info->rx_skb)->pkt_type) {
409
410 case 0x00:
411 /* init packet */
412 if (offset != 0x00) {
413 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
414 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
415 set_bit(XMIT_SENDING_READY, &(info->tx_state));
416 bluecard_write_wakeup(info);
417 }
418
419 kfree_skb(info->rx_skb);
420 info->rx_skb = NULL;
421 break;
422
423 case HCI_EVENT_PKT:
424 info->rx_state = RECV_WAIT_EVENT_HEADER;
425 info->rx_count = HCI_EVENT_HDR_SIZE;
426 break;
427
428 case HCI_ACLDATA_PKT:
429 info->rx_state = RECV_WAIT_ACL_HEADER;
430 info->rx_count = HCI_ACL_HDR_SIZE;
431 break;
432
433 case HCI_SCODATA_PKT:
434 info->rx_state = RECV_WAIT_SCO_HEADER;
435 info->rx_count = HCI_SCO_HDR_SIZE;
436 break;
437
438 default:
439 /* unknown packet */
440 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
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->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 bluecard_info_t *info = dev_inst;
503 unsigned int iobase;
504 unsigned char reg;
505
506 BUG_ON(!info->hdev);
507
508 if (!test_bit(CARD_READY, &(info->hw_state)))
509 return IRQ_HANDLED;
510
511 iobase = info->p_dev->io.BasePort1;
512
513 spin_lock(&(info->lock));
514
515 /* Disable interrupt */
516 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
517 outb(info->ctrl_reg, iobase + REG_CONTROL);
518
519 reg = inb(iobase + REG_INTERRUPT);
520
521 if ((reg != 0x00) && (reg != 0xff)) {
522
523 if (reg & 0x04) {
524 bluecard_receive(info, 0x00);
525 outb(0x04, iobase + REG_INTERRUPT);
526 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
527 }
528
529 if (reg & 0x08) {
530 bluecard_receive(info, 0x10);
531 outb(0x08, iobase + REG_INTERRUPT);
532 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
533 }
534
535 if (reg & 0x01) {
536 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
537 outb(0x01, iobase + REG_INTERRUPT);
538 bluecard_write_wakeup(info);
539 }
540
541 if (reg & 0x02) {
542 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
543 outb(0x02, iobase + REG_INTERRUPT);
544 bluecard_write_wakeup(info);
545 }
546
547 }
548
549 /* Enable interrupt */
550 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
551 outb(info->ctrl_reg, iobase + REG_CONTROL);
552
553 spin_unlock(&(info->lock));
554
555 return IRQ_HANDLED;
556 }
557
558
559
560 /* ======================== Device specific HCI commands ======================== */
561
562
563 static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
564 {
565 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
566 struct sk_buff *skb;
567
568 /* Ericsson baud rate command */
569 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
570
571 if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
572 BT_ERR("Can't allocate mem for new packet");
573 return -1;
574 }
575
576 switch (baud) {
577 case 460800:
578 cmd[4] = 0x00;
579 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
580 break;
581 case 230400:
582 cmd[4] = 0x01;
583 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
584 break;
585 case 115200:
586 cmd[4] = 0x02;
587 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
588 break;
589 case 57600:
590 /* Fall through... */
591 default:
592 cmd[4] = 0x03;
593 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
594 break;
595 }
596
597 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
598
599 skb_queue_tail(&(info->txq), skb);
600
601 bluecard_write_wakeup(info);
602
603 return 0;
604 }
605
606
607
608 /* ======================== HCI interface ======================== */
609
610
611 static int bluecard_hci_flush(struct hci_dev *hdev)
612 {
613 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
614
615 /* Drop TX queue */
616 skb_queue_purge(&(info->txq));
617
618 return 0;
619 }
620
621
622 static int bluecard_hci_open(struct hci_dev *hdev)
623 {
624 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
625 unsigned int iobase = info->p_dev->io.BasePort1;
626
627 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
628 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
629
630 if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
631 return 0;
632
633 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
634 /* 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 = (bluecard_info_t *)(hdev->driver_data);
645 unsigned int iobase = info->p_dev->io.BasePort1;
646
647 if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
648 return 0;
649
650 bluecard_hci_flush(hdev);
651
652 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
653 /* Disable LED */
654 outb(0x00, iobase + 0x30);
655 }
656
657 return 0;
658 }
659
660
661 static int bluecard_hci_send_frame(struct sk_buff *skb)
662 {
663 bluecard_info_t *info;
664 struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
665
666 if (!hdev) {
667 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
668 return -ENODEV;
669 }
670
671 info = (bluecard_info_t *)(hdev->driver_data);
672
673 switch (bt_cb(skb)->pkt_type) {
674 case HCI_COMMAND_PKT:
675 hdev->stat.cmd_tx++;
676 break;
677 case HCI_ACLDATA_PKT:
678 hdev->stat.acl_tx++;
679 break;
680 case HCI_SCODATA_PKT:
681 hdev->stat.sco_tx++;
682 break;
683 };
684
685 /* Prepend skb with frame type */
686 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
687 skb_queue_tail(&(info->txq), skb);
688
689 bluecard_write_wakeup(info);
690
691 return 0;
692 }
693
694
695 static void bluecard_hci_destruct(struct hci_dev *hdev)
696 {
697 }
698
699
700 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
701 {
702 return -ENOIOCTLCMD;
703 }
704
705
706
707 /* ======================== Card services HCI interaction ======================== */
708
709
710 static int bluecard_open(bluecard_info_t *info)
711 {
712 unsigned int iobase = info->p_dev->io.BasePort1;
713 struct hci_dev *hdev;
714 unsigned char id;
715
716 spin_lock_init(&(info->lock));
717
718 init_timer(&(info->timer));
719 info->timer.function = &bluecard_activity_led_timeout;
720 info->timer.data = (u_long)info;
721
722 skb_queue_head_init(&(info->txq));
723
724 info->rx_state = RECV_WAIT_PACKET_TYPE;
725 info->rx_count = 0;
726 info->rx_skb = NULL;
727
728 /* Initialize HCI device */
729 hdev = hci_alloc_dev();
730 if (!hdev) {
731 BT_ERR("Can't allocate HCI device");
732 return -ENOMEM;
733 }
734
735 info->hdev = hdev;
736
737 hdev->type = HCI_PCCARD;
738 hdev->driver_data = info;
739 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
740
741 hdev->open = bluecard_hci_open;
742 hdev->close = bluecard_hci_close;
743 hdev->flush = bluecard_hci_flush;
744 hdev->send = bluecard_hci_send_frame;
745 hdev->destruct = bluecard_hci_destruct;
746 hdev->ioctl = bluecard_hci_ioctl;
747
748 hdev->owner = THIS_MODULE;
749
750 id = inb(iobase + 0x30);
751
752 if ((id & 0x0f) == 0x02)
753 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
754
755 if (id & 0x10)
756 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
757
758 if (id & 0x20)
759 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
760
761 /* Reset card */
762 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
763 outb(info->ctrl_reg, iobase + REG_CONTROL);
764
765 /* Turn FPGA off */
766 outb(0x80, iobase + 0x30);
767
768 /* Wait some time */
769 msleep(10);
770
771 /* Turn FPGA on */
772 outb(0x00, iobase + 0x30);
773
774 /* Activate card */
775 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
776 outb(info->ctrl_reg, iobase + REG_CONTROL);
777
778 /* Enable interrupt */
779 outb(0xff, iobase + REG_INTERRUPT);
780 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
781 outb(info->ctrl_reg, iobase + REG_CONTROL);
782
783 if ((id & 0x0f) == 0x03) {
784 /* Disable RTS */
785 info->ctrl_reg |= REG_CONTROL_RTS;
786 outb(info->ctrl_reg, iobase + REG_CONTROL);
787
788 /* Set baud rate */
789 info->ctrl_reg |= 0x03;
790 outb(info->ctrl_reg, iobase + REG_CONTROL);
791
792 /* Enable RTS */
793 info->ctrl_reg &= ~REG_CONTROL_RTS;
794 outb(info->ctrl_reg, iobase + REG_CONTROL);
795
796 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
797 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
798 set_bit(XMIT_SENDING_READY, &(info->tx_state));
799 }
800
801 /* Start the RX buffers */
802 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
803 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
804
805 /* Signal that the hardware is ready */
806 set_bit(CARD_READY, &(info->hw_state));
807
808 /* Drop TX queue */
809 skb_queue_purge(&(info->txq));
810
811 /* Control the point at which RTS is enabled */
812 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
813
814 /* Timeout before it is safe to send the first HCI packet */
815 msleep(1250);
816
817 /* Register HCI device */
818 if (hci_register_dev(hdev) < 0) {
819 BT_ERR("Can't register HCI device");
820 info->hdev = NULL;
821 hci_free_dev(hdev);
822 return -ENODEV;
823 }
824
825 return 0;
826 }
827
828
829 static int bluecard_close(bluecard_info_t *info)
830 {
831 unsigned int iobase = info->p_dev->io.BasePort1;
832 struct hci_dev *hdev = info->hdev;
833
834 if (!hdev)
835 return -ENODEV;
836
837 bluecard_hci_close(hdev);
838
839 clear_bit(CARD_READY, &(info->hw_state));
840
841 /* Reset card */
842 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
843 outb(info->ctrl_reg, iobase + REG_CONTROL);
844
845 /* Turn FPGA off */
846 outb(0x80, iobase + 0x30);
847
848 if (hci_unregister_dev(hdev) < 0)
849 BT_ERR("Can't unregister HCI device %s", hdev->name);
850
851 hci_free_dev(hdev);
852
853 return 0;
854 }
855
856 static int bluecard_probe(struct pcmcia_device *link)
857 {
858 bluecard_info_t *info;
859
860 /* Create new info device */
861 info = kzalloc(sizeof(*info), GFP_KERNEL);
862 if (!info)
863 return -ENOMEM;
864
865 info->p_dev = link;
866 link->priv = info;
867
868 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
869 link->io.NumPorts1 = 8;
870 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
871 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
872
873 link->irq.Handler = bluecard_interrupt;
874 link->irq.Instance = info;
875
876 link->conf.Attributes = CONF_ENABLE_IRQ;
877 link->conf.IntType = INT_MEMORY_AND_IO;
878
879 return bluecard_config(link);
880 }
881
882
883 static void bluecard_detach(struct pcmcia_device *link)
884 {
885 bluecard_info_t *info = link->priv;
886
887 bluecard_release(link);
888 kfree(info);
889 }
890
891
892 static int bluecard_config(struct pcmcia_device *link)
893 {
894 bluecard_info_t *info = link->priv;
895 int i, n;
896
897 link->conf.ConfigIndex = 0x20;
898 link->io.NumPorts1 = 64;
899 link->io.IOAddrLines = 6;
900
901 for (n = 0; n < 0x400; n += 0x40) {
902 link->io.BasePort1 = n ^ 0x300;
903 i = pcmcia_request_io(link, &link->io);
904 if (i == 0)
905 break;
906 }
907
908 if (i != 0) {
909 cs_error(link, RequestIO, i);
910 goto failed;
911 }
912
913 i = pcmcia_request_irq(link, &link->irq);
914 if (i != 0) {
915 cs_error(link, RequestIRQ, i);
916 link->irq.AssignedIRQ = 0;
917 }
918
919 i = pcmcia_request_configuration(link, &link->conf);
920 if (i != 0) {
921 cs_error(link, RequestConfiguration, i);
922 goto failed;
923 }
924
925 if (bluecard_open(info) != 0)
926 goto failed;
927
928 strcpy(info->node.dev_name, info->hdev->name);
929 link->dev_node = &info->node;
930
931 return 0;
932
933 failed:
934 bluecard_release(link);
935 return -ENODEV;
936 }
937
938
939 static void bluecard_release(struct pcmcia_device *link)
940 {
941 bluecard_info_t *info = link->priv;
942
943 bluecard_close(info);
944
945 del_timer(&(info->timer));
946
947 pcmcia_disable_device(link);
948 }
949
950 static struct pcmcia_device_id bluecard_ids[] = {
951 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
952 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
953 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
954 PCMCIA_DEVICE_NULL
955 };
956 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
957
958 static struct pcmcia_driver bluecard_driver = {
959 .owner = THIS_MODULE,
960 .drv = {
961 .name = "bluecard_cs",
962 },
963 .probe = bluecard_probe,
964 .remove = bluecard_detach,
965 .id_table = bluecard_ids,
966 };
967
968 static int __init init_bluecard_cs(void)
969 {
970 return pcmcia_register_driver(&bluecard_driver);
971 }
972
973
974 static void __exit exit_bluecard_cs(void)
975 {
976 pcmcia_unregister_driver(&bluecard_driver);
977 }
978
979 module_init(init_bluecard_cs);
980 module_exit(exit_bluecard_cs);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree