efivars: explicitly calculate length of VariableName
[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 <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                 register unsigned int iobase = info->p_dev->resource[0]->start;
235                 register unsigned int offset;
236                 register unsigned char command;
237                 register unsigned long ready_bit;
238                 register struct sk_buff *skb;
239                 register 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         unsigned int iobase = info->p_dev->resource[0]->start;
625
626         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
627                 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
628
629         if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
630                 return 0;
631
632         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
633                 /* Enable LED */
634                 outb(0x08 | 0x20, iobase + 0x30);
635         }
636
637         return 0;
638 }
639
640
641 static int bluecard_hci_close(struct hci_dev *hdev)
642 {
643         bluecard_info_t *info = hci_get_drvdata(hdev);
644         unsigned int iobase = info->p_dev->resource[0]->start;
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                 /* Disable LED */
653                 outb(0x00, iobase + 0x30);
654         }
655
656         return 0;
657 }
658
659
660 static int bluecard_hci_send_frame(struct sk_buff *skb)
661 {
662         bluecard_info_t *info;
663         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
664
665         if (!hdev) {
666                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
667                 return -ENODEV;
668         }
669
670         info = hci_get_drvdata(hdev);
671
672         switch (bt_cb(skb)->pkt_type) {
673         case HCI_COMMAND_PKT:
674                 hdev->stat.cmd_tx++;
675                 break;
676         case HCI_ACLDATA_PKT:
677                 hdev->stat.acl_tx++;
678                 break;
679         case HCI_SCODATA_PKT:
680                 hdev->stat.sco_tx++;
681                 break;
682         };
683
684         /* Prepend skb with frame type */
685         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
686         skb_queue_tail(&(info->txq), skb);
687
688         bluecard_write_wakeup(info);
689
690         return 0;
691 }
692
693
694 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
695 {
696         return -ENOIOCTLCMD;
697 }
698
699
700
701 /* ======================== Card services HCI interaction ======================== */
702
703
704 static int bluecard_open(bluecard_info_t *info)
705 {
706         unsigned int iobase = info->p_dev->resource[0]->start;
707         struct hci_dev *hdev;
708         unsigned char id;
709
710         spin_lock_init(&(info->lock));
711
712         init_timer(&(info->timer));
713         info->timer.function = &bluecard_activity_led_timeout;
714         info->timer.data = (u_long)info;
715
716         skb_queue_head_init(&(info->txq));
717
718         info->rx_state = RECV_WAIT_PACKET_TYPE;
719         info->rx_count = 0;
720         info->rx_skb = NULL;
721
722         /* Initialize HCI device */
723         hdev = hci_alloc_dev();
724         if (!hdev) {
725                 BT_ERR("Can't allocate HCI device");
726                 return -ENOMEM;
727         }
728
729         info->hdev = hdev;
730
731         hdev->bus = HCI_PCCARD;
732         hci_set_drvdata(hdev, info);
733         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
734
735         hdev->open     = bluecard_hci_open;
736         hdev->close    = bluecard_hci_close;
737         hdev->flush    = bluecard_hci_flush;
738         hdev->send     = bluecard_hci_send_frame;
739         hdev->ioctl    = bluecard_hci_ioctl;
740
741         id = inb(iobase + 0x30);
742
743         if ((id & 0x0f) == 0x02)
744                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
745
746         if (id & 0x10)
747                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
748
749         if (id & 0x20)
750                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
751
752         /* Reset card */
753         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
754         outb(info->ctrl_reg, iobase + REG_CONTROL);
755
756         /* Turn FPGA off */
757         outb(0x80, iobase + 0x30);
758
759         /* Wait some time */
760         msleep(10);
761
762         /* Turn FPGA on */
763         outb(0x00, iobase + 0x30);
764
765         /* Activate card */
766         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
767         outb(info->ctrl_reg, iobase + REG_CONTROL);
768
769         /* Enable interrupt */
770         outb(0xff, iobase + REG_INTERRUPT);
771         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
772         outb(info->ctrl_reg, iobase + REG_CONTROL);
773
774         if ((id & 0x0f) == 0x03) {
775                 /* Disable RTS */
776                 info->ctrl_reg |= REG_CONTROL_RTS;
777                 outb(info->ctrl_reg, iobase + REG_CONTROL);
778
779                 /* Set baud rate */
780                 info->ctrl_reg |= 0x03;
781                 outb(info->ctrl_reg, iobase + REG_CONTROL);
782
783                 /* Enable RTS */
784                 info->ctrl_reg &= ~REG_CONTROL_RTS;
785                 outb(info->ctrl_reg, iobase + REG_CONTROL);
786
787                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
788                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
789                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
790         }
791
792         /* Start the RX buffers */
793         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
794         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
795
796         /* Signal that the hardware is ready */
797         set_bit(CARD_READY, &(info->hw_state));
798
799         /* Drop TX queue */
800         skb_queue_purge(&(info->txq));
801
802         /* Control the point at which RTS is enabled */
803         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
804
805         /* Timeout before it is safe to send the first HCI packet */
806         msleep(1250);
807
808         /* Register HCI device */
809         if (hci_register_dev(hdev) < 0) {
810                 BT_ERR("Can't register HCI device");
811                 info->hdev = NULL;
812                 hci_free_dev(hdev);
813                 return -ENODEV;
814         }
815
816         return 0;
817 }
818
819
820 static int bluecard_close(bluecard_info_t *info)
821 {
822         unsigned int iobase = info->p_dev->resource[0]->start;
823         struct hci_dev *hdev = info->hdev;
824
825         if (!hdev)
826                 return -ENODEV;
827
828         bluecard_hci_close(hdev);
829
830         clear_bit(CARD_READY, &(info->hw_state));
831
832         /* Reset card */
833         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
834         outb(info->ctrl_reg, iobase + REG_CONTROL);
835
836         /* Turn FPGA off */
837         outb(0x80, iobase + 0x30);
838
839         hci_unregister_dev(hdev);
840         hci_free_dev(hdev);
841
842         return 0;
843 }
844
845 static int bluecard_probe(struct pcmcia_device *link)
846 {
847         bluecard_info_t *info;
848
849         /* Create new info device */
850         info = kzalloc(sizeof(*info), GFP_KERNEL);
851         if (!info)
852                 return -ENOMEM;
853
854         info->p_dev = link;
855         link->priv = info;
856
857         link->config_flags |= CONF_ENABLE_IRQ;
858
859         return bluecard_config(link);
860 }
861
862
863 static void bluecard_detach(struct pcmcia_device *link)
864 {
865         bluecard_info_t *info = link->priv;
866
867         bluecard_release(link);
868         kfree(info);
869 }
870
871
872 static int bluecard_config(struct pcmcia_device *link)
873 {
874         bluecard_info_t *info = link->priv;
875         int i, n;
876
877         link->config_index = 0x20;
878
879         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
880         link->resource[0]->end = 64;
881         link->io_lines = 6;
882
883         for (n = 0; n < 0x400; n += 0x40) {
884                 link->resource[0]->start = n ^ 0x300;
885                 i = pcmcia_request_io(link);
886                 if (i == 0)
887                         break;
888         }
889
890         if (i != 0)
891                 goto failed;
892
893         i = pcmcia_request_irq(link, bluecard_interrupt);
894         if (i != 0)
895                 goto failed;
896
897         i = pcmcia_enable_device(link);
898         if (i != 0)
899                 goto failed;
900
901         if (bluecard_open(info) != 0)
902                 goto failed;
903
904         return 0;
905
906 failed:
907         bluecard_release(link);
908         return -ENODEV;
909 }
910
911
912 static void bluecard_release(struct pcmcia_device *link)
913 {
914         bluecard_info_t *info = link->priv;
915
916         bluecard_close(info);
917
918         del_timer(&(info->timer));
919
920         pcmcia_disable_device(link);
921 }
922
923 static const struct pcmcia_device_id bluecard_ids[] = {
924         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
925         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
926         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
927         PCMCIA_DEVICE_NULL
928 };
929 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
930
931 static struct pcmcia_driver bluecard_driver = {
932         .owner          = THIS_MODULE,
933         .name           = "bluecard_cs",
934         .probe          = bluecard_probe,
935         .remove         = bluecard_detach,
936         .id_table       = bluecard_ids,
937 };
938
939 static int __init init_bluecard_cs(void)
940 {
941         return pcmcia_register_driver(&bluecard_driver);
942 }
943
944
945 static void __exit exit_bluecard_cs(void)
946 {
947         pcmcia_unregister_driver(&bluecard_driver);
948 }
949
950 module_init(init_bluecard_cs);
951 module_exit(exit_bluecard_cs);