39a05b0c899867593de00adc1b8bfeeafc788b9a
[sfrench/cifs-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 struct bluecard_info {
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 };
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         struct bluecard_info *info = (struct bluecard_info *)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(struct bluecard_info *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(struct bluecard_info *info)
219 {
220         if (!info) {
221                 BT_ERR("Unknown device");
222                 return;
223         }
224
225         if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
226                 return;
227
228         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
229                 set_bit(XMIT_WAKEUP, &(info->tx_state));
230                 return;
231         }
232
233         do {
234                 unsigned int iobase = info->p_dev->resource[0]->start;
235                 unsigned int offset;
236                 unsigned char command;
237                 unsigned long ready_bit;
238                 register struct sk_buff *skb;
239                 int len;
240
241                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
242
243                 if (!pcmcia_dev_present(info->p_dev))
244                         return;
245
246                 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
247                         if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
248                                 break;
249                         offset = 0x10;
250                         command = REG_COMMAND_TX_BUF_TWO;
251                         ready_bit = XMIT_BUF_TWO_READY;
252                 } else {
253                         if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
254                                 break;
255                         offset = 0x00;
256                         command = REG_COMMAND_TX_BUF_ONE;
257                         ready_bit = XMIT_BUF_ONE_READY;
258                 }
259
260                 skb = skb_dequeue(&(info->txq));
261                 if (!skb)
262                         break;
263
264                 if (hci_skb_pkt_type(skb) & 0x80) {
265                         /* Disable RTS */
266                         info->ctrl_reg |= REG_CONTROL_RTS;
267                         outb(info->ctrl_reg, iobase + REG_CONTROL);
268                 }
269
270                 /* Activate LED */
271                 bluecard_enable_activity_led(info);
272
273                 /* Send frame */
274                 len = bluecard_write(iobase, offset, skb->data, skb->len);
275
276                 /* Tell the FPGA to send the data */
277                 outb_p(command, iobase + REG_COMMAND);
278
279                 /* Mark the buffer as dirty */
280                 clear_bit(ready_bit, &(info->tx_state));
281
282                 if (hci_skb_pkt_type(skb) & 0x80) {
283                         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
284                         DEFINE_WAIT(wait);
285
286                         unsigned char baud_reg;
287
288                         switch (hci_skb_pkt_type(skb)) {
289                         case PKT_BAUD_RATE_460800:
290                                 baud_reg = REG_CONTROL_BAUD_RATE_460800;
291                                 break;
292                         case PKT_BAUD_RATE_230400:
293                                 baud_reg = REG_CONTROL_BAUD_RATE_230400;
294                                 break;
295                         case PKT_BAUD_RATE_115200:
296                                 baud_reg = REG_CONTROL_BAUD_RATE_115200;
297                                 break;
298                         case PKT_BAUD_RATE_57600:
299                                 /* Fall through... */
300                         default:
301                                 baud_reg = REG_CONTROL_BAUD_RATE_57600;
302                                 break;
303                         }
304
305                         /* Wait until the command reaches the baseband */
306                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
307                         schedule_timeout(HZ/10);
308                         finish_wait(&wq, &wait);
309
310                         /* Set baud on baseband */
311                         info->ctrl_reg &= ~0x03;
312                         info->ctrl_reg |= baud_reg;
313                         outb(info->ctrl_reg, iobase + REG_CONTROL);
314
315                         /* Enable RTS */
316                         info->ctrl_reg &= ~REG_CONTROL_RTS;
317                         outb(info->ctrl_reg, iobase + REG_CONTROL);
318
319                         /* Wait before the next HCI packet can be send */
320                         prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
321                         schedule_timeout(HZ);
322                         finish_wait(&wq, &wait);
323                 }
324
325                 if (len == skb->len) {
326                         kfree_skb(skb);
327                 } else {
328                         skb_pull(skb, len);
329                         skb_queue_head(&(info->txq), skb);
330                 }
331
332                 info->hdev->stat.byte_tx += len;
333
334                 /* Change buffer */
335                 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
336
337         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
338
339         clear_bit(XMIT_SENDING, &(info->tx_state));
340 }
341
342
343 static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
344 {
345         int i, n, len;
346
347         outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
348
349         len = inb(iobase + offset);
350         n = 0;
351         i = 1;
352
353         while (n < len) {
354
355                 if (i == 16) {
356                         outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
357                         i = 0;
358                 }
359
360                 buf[n] = inb(iobase + offset + i);
361
362                 n++;
363                 i++;
364
365         }
366
367         return len;
368 }
369
370
371 static void bluecard_receive(struct bluecard_info *info,
372                              unsigned int offset)
373 {
374         unsigned int iobase;
375         unsigned char buf[31];
376         int i, len;
377
378         if (!info) {
379                 BT_ERR("Unknown device");
380                 return;
381         }
382
383         iobase = info->p_dev->resource[0]->start;
384
385         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
386                 bluecard_enable_activity_led(info);
387
388         len = bluecard_read(iobase, offset, buf, sizeof(buf));
389
390         for (i = 0; i < len; i++) {
391
392                 /* Allocate packet */
393                 if (!info->rx_skb) {
394                         info->rx_state = RECV_WAIT_PACKET_TYPE;
395                         info->rx_count = 0;
396                         info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
397                         if (!info->rx_skb) {
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                         hci_skb_pkt_type(info->rx_skb) = buf[i];
406
407                         switch (hci_skb_pkt_type(info->rx_skb)) {
408
409                         case 0x00:
410                                 /* init packet */
411                                 if (offset != 0x00) {
412                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
413                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
414                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
415                                         bluecard_write_wakeup(info);
416                                 }
417
418                                 kfree_skb(info->rx_skb);
419                                 info->rx_skb = NULL;
420                                 break;
421
422                         case HCI_EVENT_PKT:
423                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
424                                 info->rx_count = HCI_EVENT_HDR_SIZE;
425                                 break;
426
427                         case HCI_ACLDATA_PKT:
428                                 info->rx_state = RECV_WAIT_ACL_HEADER;
429                                 info->rx_count = HCI_ACL_HDR_SIZE;
430                                 break;
431
432                         case HCI_SCODATA_PKT:
433                                 info->rx_state = RECV_WAIT_SCO_HEADER;
434                                 info->rx_count = HCI_SCO_HDR_SIZE;
435                                 break;
436
437                         default:
438                                 /* unknown packet */
439                                 BT_ERR("Unknown HCI packet with type 0x%02x received",
440                                        hci_skb_pkt_type(info->rx_skb));
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                         *(u8 *)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->hdev, 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         struct bluecard_info *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->resource[0]->start;
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         struct bluecard_info *info = hci_get_drvdata(hdev);
568         struct sk_buff *skb;
569
570         /* Ericsson baud rate command */
571         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
572
573         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
574         if (!skb) {
575                 BT_ERR("Can't allocate mem for new packet");
576                 return -1;
577         }
578
579         switch (baud) {
580         case 460800:
581                 cmd[4] = 0x00;
582                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
583                 break;
584         case 230400:
585                 cmd[4] = 0x01;
586                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
587                 break;
588         case 115200:
589                 cmd[4] = 0x02;
590                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
591                 break;
592         case 57600:
593                 /* Fall through... */
594         default:
595                 cmd[4] = 0x03;
596                 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
597                 break;
598         }
599
600         skb_put_data(skb, cmd, sizeof(cmd));
601
602         skb_queue_tail(&(info->txq), skb);
603
604         bluecard_write_wakeup(info);
605
606         return 0;
607 }
608
609
610
611 /* ======================== HCI interface ======================== */
612
613
614 static int bluecard_hci_flush(struct hci_dev *hdev)
615 {
616         struct bluecard_info *info = hci_get_drvdata(hdev);
617
618         /* Drop TX queue */
619         skb_queue_purge(&(info->txq));
620
621         return 0;
622 }
623
624
625 static int bluecard_hci_open(struct hci_dev *hdev)
626 {
627         struct bluecard_info *info = hci_get_drvdata(hdev);
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_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
633                 unsigned int iobase = info->p_dev->resource[0]->start;
634
635                 /* Enable LED */
636                 outb(0x08 | 0x20, iobase + 0x30);
637         }
638
639         return 0;
640 }
641
642
643 static int bluecard_hci_close(struct hci_dev *hdev)
644 {
645         struct bluecard_info *info = hci_get_drvdata(hdev);
646
647         bluecard_hci_flush(hdev);
648
649         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
650                 unsigned int iobase = info->p_dev->resource[0]->start;
651
652                 /* Disable LED */
653                 outb(0x00, iobase + 0x30);
654         }
655
656         return 0;
657 }
658
659
660 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
661 {
662         struct bluecard_info *info = hci_get_drvdata(hdev);
663
664         switch (hci_skb_pkt_type(skb)) {
665         case HCI_COMMAND_PKT:
666                 hdev->stat.cmd_tx++;
667                 break;
668         case HCI_ACLDATA_PKT:
669                 hdev->stat.acl_tx++;
670                 break;
671         case HCI_SCODATA_PKT:
672                 hdev->stat.sco_tx++;
673                 break;
674         }
675
676         /* Prepend skb with frame type */
677         memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
678         skb_queue_tail(&(info->txq), skb);
679
680         bluecard_write_wakeup(info);
681
682         return 0;
683 }
684
685
686
687 /* ======================== Card services HCI interaction ======================== */
688
689
690 static int bluecard_open(struct bluecard_info *info)
691 {
692         unsigned int iobase = info->p_dev->resource[0]->start;
693         struct hci_dev *hdev;
694         unsigned char id;
695
696         spin_lock_init(&(info->lock));
697
698         setup_timer(&(info->timer), &bluecard_activity_led_timeout,
699                     (u_long)info);
700
701         skb_queue_head_init(&(info->txq));
702
703         info->rx_state = RECV_WAIT_PACKET_TYPE;
704         info->rx_count = 0;
705         info->rx_skb = NULL;
706
707         /* Initialize HCI device */
708         hdev = hci_alloc_dev();
709         if (!hdev) {
710                 BT_ERR("Can't allocate HCI device");
711                 return -ENOMEM;
712         }
713
714         info->hdev = hdev;
715
716         hdev->bus = HCI_PCCARD;
717         hci_set_drvdata(hdev, info);
718         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
719
720         hdev->open  = bluecard_hci_open;
721         hdev->close = bluecard_hci_close;
722         hdev->flush = bluecard_hci_flush;
723         hdev->send  = bluecard_hci_send_frame;
724
725         id = inb(iobase + 0x30);
726
727         if ((id & 0x0f) == 0x02)
728                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
729
730         if (id & 0x10)
731                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
732
733         if (id & 0x20)
734                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
735
736         /* Reset card */
737         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
738         outb(info->ctrl_reg, iobase + REG_CONTROL);
739
740         /* Turn FPGA off */
741         outb(0x80, iobase + 0x30);
742
743         /* Wait some time */
744         msleep(10);
745
746         /* Turn FPGA on */
747         outb(0x00, iobase + 0x30);
748
749         /* Activate card */
750         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
751         outb(info->ctrl_reg, iobase + REG_CONTROL);
752
753         /* Enable interrupt */
754         outb(0xff, iobase + REG_INTERRUPT);
755         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
756         outb(info->ctrl_reg, iobase + REG_CONTROL);
757
758         if ((id & 0x0f) == 0x03) {
759                 /* Disable RTS */
760                 info->ctrl_reg |= REG_CONTROL_RTS;
761                 outb(info->ctrl_reg, iobase + REG_CONTROL);
762
763                 /* Set baud rate */
764                 info->ctrl_reg |= 0x03;
765                 outb(info->ctrl_reg, iobase + REG_CONTROL);
766
767                 /* Enable RTS */
768                 info->ctrl_reg &= ~REG_CONTROL_RTS;
769                 outb(info->ctrl_reg, iobase + REG_CONTROL);
770
771                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
772                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
773                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
774         }
775
776         /* Start the RX buffers */
777         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
778         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
779
780         /* Signal that the hardware is ready */
781         set_bit(CARD_READY, &(info->hw_state));
782
783         /* Drop TX queue */
784         skb_queue_purge(&(info->txq));
785
786         /* Control the point at which RTS is enabled */
787         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
788
789         /* Timeout before it is safe to send the first HCI packet */
790         msleep(1250);
791
792         /* Register HCI device */
793         if (hci_register_dev(hdev) < 0) {
794                 BT_ERR("Can't register HCI device");
795                 info->hdev = NULL;
796                 hci_free_dev(hdev);
797                 return -ENODEV;
798         }
799
800         return 0;
801 }
802
803
804 static int bluecard_close(struct bluecard_info *info)
805 {
806         unsigned int iobase = info->p_dev->resource[0]->start;
807         struct hci_dev *hdev = info->hdev;
808
809         if (!hdev)
810                 return -ENODEV;
811
812         bluecard_hci_close(hdev);
813
814         clear_bit(CARD_READY, &(info->hw_state));
815
816         /* Reset card */
817         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
818         outb(info->ctrl_reg, iobase + REG_CONTROL);
819
820         /* Turn FPGA off */
821         outb(0x80, iobase + 0x30);
822
823         hci_unregister_dev(hdev);
824         hci_free_dev(hdev);
825
826         return 0;
827 }
828
829 static int bluecard_probe(struct pcmcia_device *link)
830 {
831         struct bluecard_info *info;
832
833         /* Create new info device */
834         info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
835         if (!info)
836                 return -ENOMEM;
837
838         info->p_dev = link;
839         link->priv = info;
840
841         link->config_flags |= CONF_ENABLE_IRQ;
842
843         return bluecard_config(link);
844 }
845
846
847 static void bluecard_detach(struct pcmcia_device *link)
848 {
849         bluecard_release(link);
850 }
851
852
853 static int bluecard_config(struct pcmcia_device *link)
854 {
855         struct bluecard_info *info = link->priv;
856         int i, n;
857
858         link->config_index = 0x20;
859
860         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
861         link->resource[0]->end = 64;
862         link->io_lines = 6;
863
864         for (n = 0; n < 0x400; n += 0x40) {
865                 link->resource[0]->start = n ^ 0x300;
866                 i = pcmcia_request_io(link);
867                 if (i == 0)
868                         break;
869         }
870
871         if (i != 0)
872                 goto failed;
873
874         i = pcmcia_request_irq(link, bluecard_interrupt);
875         if (i != 0)
876                 goto failed;
877
878         i = pcmcia_enable_device(link);
879         if (i != 0)
880                 goto failed;
881
882         if (bluecard_open(info) != 0)
883                 goto failed;
884
885         return 0;
886
887 failed:
888         bluecard_release(link);
889         return -ENODEV;
890 }
891
892
893 static void bluecard_release(struct pcmcia_device *link)
894 {
895         struct bluecard_info *info = link->priv;
896
897         bluecard_close(info);
898
899         del_timer_sync(&(info->timer));
900
901         pcmcia_disable_device(link);
902 }
903
904 static const struct pcmcia_device_id bluecard_ids[] = {
905         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
906         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
907         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
908         PCMCIA_DEVICE_NULL
909 };
910 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
911
912 static struct pcmcia_driver bluecard_driver = {
913         .owner          = THIS_MODULE,
914         .name           = "bluecard_cs",
915         .probe          = bluecard_probe,
916         .remove         = bluecard_detach,
917         .id_table       = bluecard_ids,
918 };
919 module_pcmcia_driver(bluecard_driver);