2acdc605cb4b670beefb8b0bf0ef326ff9c123e5
[linux-2.6.git] / drivers / bluetooth / bluecard_cs.c
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;
871
872         link->irq.Handler = bluecard_interrupt;
873
874         link->conf.Attributes = CONF_ENABLE_IRQ;
875         link->conf.IntType = INT_MEMORY_AND_IO;
876
877         return bluecard_config(link);
878 }
879
880
881 static void bluecard_detach(struct pcmcia_device *link)
882 {
883         bluecard_info_t *info = link->priv;
884
885         bluecard_release(link);
886         kfree(info);
887 }
888
889
890 static int bluecard_config(struct pcmcia_device *link)
891 {
892         bluecard_info_t *info = link->priv;
893         int i, n;
894
895         link->conf.ConfigIndex = 0x20;
896         link->io.NumPorts1 = 64;
897         link->io.IOAddrLines = 6;
898
899         for (n = 0; n < 0x400; n += 0x40) {
900                 link->io.BasePort1 = n ^ 0x300;
901                 i = pcmcia_request_io(link, &link->io);
902                 if (i == 0)
903                         break;
904         }
905
906         if (i != 0)
907                 goto failed;
908
909         i = pcmcia_request_irq(link, &link->irq);
910         if (i != 0)
911                 link->irq.AssignedIRQ = 0;
912
913         i = pcmcia_request_configuration(link, &link->conf);
914         if (i != 0)
915                 goto failed;
916
917         if (bluecard_open(info) != 0)
918                 goto failed;
919
920         strcpy(info->node.dev_name, info->hdev->name);
921         link->dev_node = &info->node;
922
923         return 0;
924
925 failed:
926         bluecard_release(link);
927         return -ENODEV;
928 }
929
930
931 static void bluecard_release(struct pcmcia_device *link)
932 {
933         bluecard_info_t *info = link->priv;
934
935         bluecard_close(info);
936
937         del_timer(&(info->timer));
938
939         pcmcia_disable_device(link);
940 }
941
942 static struct pcmcia_device_id bluecard_ids[] = {
943         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
944         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
945         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
946         PCMCIA_DEVICE_NULL
947 };
948 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
949
950 static struct pcmcia_driver bluecard_driver = {
951         .owner          = THIS_MODULE,
952         .drv            = {
953                 .name   = "bluecard_cs",
954         },
955         .probe          = bluecard_probe,
956         .remove         = bluecard_detach,
957         .id_table       = bluecard_ids,
958 };
959
960 static int __init init_bluecard_cs(void)
961 {
962         return pcmcia_register_driver(&bluecard_driver);
963 }
964
965
966 static void __exit exit_bluecard_cs(void)
967 {
968         pcmcia_unregister_driver(&bluecard_driver);
969 }
970
971 module_init(init_bluecard_cs);
972 module_exit(exit_bluecard_cs);