?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
tty: Fix the ldisc hangup race
[linux-2.6/kvm.git] / drivers / bluetooth / bluecard_cs.c
blobc2cf81144715b92fee345a2e8ecd8bf09b753131
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 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->io.BasePort1;
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 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
568 struct sk_buff *skb;
569
570 /* Ericsson baud rate command */
571 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
572
573 if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
574 BT_ERR("Can't allocate mem for new packet");
575 return -1;
576 }
577
578 switch (baud) {
579 case 460800:
580 cmd[4] = 0x00;
581 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
582 break;
583 case 230400:
584 cmd[4] = 0x01;
585 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
586 break;
587 case 115200:
588 cmd[4] = 0x02;
589 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
590 break;
591 case 57600:
592 /* Fall through... */
593 default:
594 cmd[4] = 0x03;
595 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
596 break;
597 }
598
599 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
600
601 skb_queue_tail(&(info->txq), skb);
602
603 bluecard_write_wakeup(info);
604
605 return 0;
606 }
607
608
609
610 /* ======================== HCI interface ======================== */
611
612
613 static int bluecard_hci_flush(struct hci_dev *hdev)
614 {
615 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
616
617 /* Drop TX queue */
618 skb_queue_purge(&(info->txq));
619
620 return 0;
621 }
622
623
624 static int bluecard_hci_open(struct hci_dev *hdev)
625 {
626 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
627 unsigned int iobase = info->p_dev->io.BasePort1;
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_and_set_bit(HCI_RUNNING, &(hdev->flags)))
633 return 0;
634
635 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
636 /* Enable LED */
637 outb(0x08 | 0x20, iobase + 0x30);
638 }
639
640 return 0;
641 }
642
643
644 static int bluecard_hci_close(struct hci_dev *hdev)
645 {
646 bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
647 unsigned int iobase = info->p_dev->io.BasePort1;
648
649 if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
650 return 0;
651
652 bluecard_hci_flush(hdev);
653
654 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
655 /* Disable LED */
656 outb(0x00, iobase + 0x30);
657 }
658
659 return 0;
660 }
661
662
663 static int bluecard_hci_send_frame(struct sk_buff *skb)
664 {
665 bluecard_info_t *info;
666 struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
667
668 if (!hdev) {
669 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
670 return -ENODEV;
671 }
672
673 info = (bluecard_info_t *)(hdev->driver_data);
674
675 switch (bt_cb(skb)->pkt_type) {
676 case HCI_COMMAND_PKT:
677 hdev->stat.cmd_tx++;
678 break;
679 case HCI_ACLDATA_PKT:
680 hdev->stat.acl_tx++;
681 break;
682 case HCI_SCODATA_PKT:
683 hdev->stat.sco_tx++;
684 break;
685 };
686
687 /* Prepend skb with frame type */
688 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
689 skb_queue_tail(&(info->txq), skb);
690
691 bluecard_write_wakeup(info);
692
693 return 0;
694 }
695
696
697 static void bluecard_hci_destruct(struct hci_dev *hdev)
698 {
699 }
700
701
702 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
703 {
704 return -ENOIOCTLCMD;
705 }
706
707
708
709 /* ======================== Card services HCI interaction ======================== */
710
711
712 static int bluecard_open(bluecard_info_t *info)
713 {
714 unsigned int iobase = info->p_dev->io.BasePort1;
715 struct hci_dev *hdev;
716 unsigned char id;
717
718 spin_lock_init(&(info->lock));
719
720 init_timer(&(info->timer));
721 info->timer.function = &bluecard_activity_led_timeout;
722 info->timer.data = (u_long)info;
723
724 skb_queue_head_init(&(info->txq));
725
726 info->rx_state = RECV_WAIT_PACKET_TYPE;
727 info->rx_count = 0;
728 info->rx_skb = NULL;
729
730 /* Initialize HCI device */
731 hdev = hci_alloc_dev();
732 if (!hdev) {
733 BT_ERR("Can't allocate HCI device");
734 return -ENOMEM;
735 }
736
737 info->hdev = hdev;
738
739 hdev->type = HCI_PCCARD;
740 hdev->driver_data = info;
741 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
742
743 hdev->open = bluecard_hci_open;
744 hdev->close = bluecard_hci_close;
745 hdev->flush = bluecard_hci_flush;
746 hdev->send = bluecard_hci_send_frame;
747 hdev->destruct = bluecard_hci_destruct;
748 hdev->ioctl = bluecard_hci_ioctl;
749
750 hdev->owner = THIS_MODULE;
751
752 id = inb(iobase + 0x30);
753
754 if ((id & 0x0f) == 0x02)
755 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
756
757 if (id & 0x10)
758 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
759
760 if (id & 0x20)
761 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
762
763 /* Reset card */
764 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
765 outb(info->ctrl_reg, iobase + REG_CONTROL);
766
767 /* Turn FPGA off */
768 outb(0x80, iobase + 0x30);
769
770 /* Wait some time */
771 msleep(10);
772
773 /* Turn FPGA on */
774 outb(0x00, iobase + 0x30);
775
776 /* Activate card */
777 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
778 outb(info->ctrl_reg, iobase + REG_CONTROL);
779
780 /* Enable interrupt */
781 outb(0xff, iobase + REG_INTERRUPT);
782 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
783 outb(info->ctrl_reg, iobase + REG_CONTROL);
784
785 if ((id & 0x0f) == 0x03) {
786 /* Disable RTS */
787 info->ctrl_reg |= REG_CONTROL_RTS;
788 outb(info->ctrl_reg, iobase + REG_CONTROL);
789
790 /* Set baud rate */
791 info->ctrl_reg |= 0x03;
792 outb(info->ctrl_reg, iobase + REG_CONTROL);
793
794 /* Enable RTS */
795 info->ctrl_reg &= ~REG_CONTROL_RTS;
796 outb(info->ctrl_reg, iobase + REG_CONTROL);
797
798 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
799 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
800 set_bit(XMIT_SENDING_READY, &(info->tx_state));
801 }
802
803 /* Start the RX buffers */
804 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
805 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
806
807 /* Signal that the hardware is ready */
808 set_bit(CARD_READY, &(info->hw_state));
809
810 /* Drop TX queue */
811 skb_queue_purge(&(info->txq));
812
813 /* Control the point at which RTS is enabled */
814 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
815
816 /* Timeout before it is safe to send the first HCI packet */
817 msleep(1250);
818
819 /* Register HCI device */
820 if (hci_register_dev(hdev) < 0) {
821 BT_ERR("Can't register HCI device");
822 info->hdev = NULL;
823 hci_free_dev(hdev);
824 return -ENODEV;
825 }
826
827 return 0;
828 }
829
830
831 static int bluecard_close(bluecard_info_t *info)
832 {
833 unsigned int iobase = info->p_dev->io.BasePort1;
834 struct hci_dev *hdev = info->hdev;
835
836 if (!hdev)
837 return -ENODEV;
838
839 bluecard_hci_close(hdev);
840
841 clear_bit(CARD_READY, &(info->hw_state));
842
843 /* Reset card */
844 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
845 outb(info->ctrl_reg, iobase + REG_CONTROL);
846
847 /* Turn FPGA off */
848 outb(0x80, iobase + 0x30);
849
850 if (hci_unregister_dev(hdev) < 0)
851 BT_ERR("Can't unregister HCI device %s", hdev->name);
852
853 hci_free_dev(hdev);
854
855 return 0;
856 }
857
858 static int bluecard_probe(struct pcmcia_device *link)
859 {
860 bluecard_info_t *info;
861
862 /* Create new info device */
863 info = kzalloc(sizeof(*info), GFP_KERNEL);
864 if (!info)
865 return -ENOMEM;
866
867 info->p_dev = link;
868 link->priv = info;
869
870 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
871 link->io.NumPorts1 = 8;
872 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
873
874 link->irq.Handler = bluecard_interrupt;
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 goto failed;
910
911 i = pcmcia_request_irq(link, &link->irq);
912 if (i != 0)
913 link->irq.AssignedIRQ = 0;
914
915 i = pcmcia_request_configuration(link, &link->conf);
916 if (i != 0)
917 goto failed;
918
919 if (bluecard_open(info) != 0)
920 goto failed;
921
922 strcpy(info->node.dev_name, info->hdev->name);
923 link->dev_node = &info->node;
924
925 return 0;
926
927 failed:
928 bluecard_release(link);
929 return -ENODEV;
930 }
931
932
933 static void bluecard_release(struct pcmcia_device *link)
934 {
935 bluecard_info_t *info = link->priv;
936
937 bluecard_close(info);
938
939 del_timer(&(info->timer));
940
941 pcmcia_disable_device(link);
942 }
943
944 static struct pcmcia_device_id bluecard_ids[] = {
945 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
946 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
947 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
948 PCMCIA_DEVICE_NULL
949 };
950 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
951
952 static struct pcmcia_driver bluecard_driver = {
953 .owner = THIS_MODULE,
954 .drv = {
955 .name = "bluecard_cs",
956 },
957 .probe = bluecard_probe,
958 .remove = bluecard_detach,
959 .id_table = bluecard_ids,
960 };
961
962 static int __init init_bluecard_cs(void)
963 {
964 return pcmcia_register_driver(&bluecard_driver);
965 }
966
967
968 static void __exit exit_bluecard_cs(void)
969 {
970 pcmcia_unregister_driver(&bluecard_driver);
971 }
972
973 module_init(init_bluecard_cs);
974 module_exit(exit_bluecard_cs);
kernel-based virtual machine