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bluecard_cs.c
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1 /*
2  *
3  * Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
4  *
5  * Copyright (C) 2001-2002 Marcel Holtmann <[email protected]>
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  * <[email protected]>. 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 <[email protected]>");
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  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  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 
625  if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
626  bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
627 
628  if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
629  return 0;
630 
631  if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
632  unsigned int iobase = info->p_dev->resource[0]->start;
633 
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 = hci_get_drvdata(hdev);
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  unsigned int iobase = info->p_dev->resource[0]->start;
653 
654  /* Disable LED */
655  outb(0x00, iobase + 0x30);
656  }
657 
658  return 0;
659 }
660 
661 
662 static int bluecard_hci_send_frame(struct sk_buff *skb)
663 {
664  bluecard_info_t *info;
665  struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
666 
667  if (!hdev) {
668  BT_ERR("Frame for unknown HCI device (hdev=NULL)");
669  return -ENODEV;
670  }
671 
672  info = hci_get_drvdata(hdev);
673 
674  switch (bt_cb(skb)->pkt_type) {
675  case HCI_COMMAND_PKT:
676  hdev->stat.cmd_tx++;
677  break;
678  case HCI_ACLDATA_PKT:
679  hdev->stat.acl_tx++;
680  break;
681  case HCI_SCODATA_PKT:
682  hdev->stat.sco_tx++;
683  break;
684  }
685 
686  /* Prepend skb with frame type */
687  memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
688  skb_queue_tail(&(info->txq), skb);
689 
690  bluecard_write_wakeup(info);
691 
692  return 0;
693 }
694 
695 
696 static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
697 {
698  return -ENOIOCTLCMD;
699 }
700 
701 
702 
703 /* ======================== Card services HCI interaction ======================== */
704 
705 
706 static int bluecard_open(bluecard_info_t *info)
707 {
708  unsigned int iobase = info->p_dev->resource[0]->start;
709  struct hci_dev *hdev;
710  unsigned char id;
711 
712  spin_lock_init(&(info->lock));
713 
714  init_timer(&(info->timer));
715  info->timer.function = &bluecard_activity_led_timeout;
716  info->timer.data = (u_long)info;
717 
718  skb_queue_head_init(&(info->txq));
719 
720  info->rx_state = RECV_WAIT_PACKET_TYPE;
721  info->rx_count = 0;
722  info->rx_skb = NULL;
723 
724  /* Initialize HCI device */
725  hdev = hci_alloc_dev();
726  if (!hdev) {
727  BT_ERR("Can't allocate HCI device");
728  return -ENOMEM;
729  }
730 
731  info->hdev = hdev;
732 
733  hdev->bus = HCI_PCCARD;
734  hci_set_drvdata(hdev, info);
735  SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
736 
737  hdev->open = bluecard_hci_open;
738  hdev->close = bluecard_hci_close;
739  hdev->flush = bluecard_hci_flush;
740  hdev->send = bluecard_hci_send_frame;
741  hdev->ioctl = bluecard_hci_ioctl;
742 
743  id = inb(iobase + 0x30);
744 
745  if ((id & 0x0f) == 0x02)
746  set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
747 
748  if (id & 0x10)
749  set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
750 
751  if (id & 0x20)
752  set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
753 
754  /* Reset card */
755  info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
756  outb(info->ctrl_reg, iobase + REG_CONTROL);
757 
758  /* Turn FPGA off */
759  outb(0x80, iobase + 0x30);
760 
761  /* Wait some time */
762  msleep(10);
763 
764  /* Turn FPGA on */
765  outb(0x00, iobase + 0x30);
766 
767  /* Activate card */
768  info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
769  outb(info->ctrl_reg, iobase + REG_CONTROL);
770 
771  /* Enable interrupt */
772  outb(0xff, iobase + REG_INTERRUPT);
773  info->ctrl_reg |= REG_CONTROL_INTERRUPT;
774  outb(info->ctrl_reg, iobase + REG_CONTROL);
775 
776  if ((id & 0x0f) == 0x03) {
777  /* Disable RTS */
778  info->ctrl_reg |= REG_CONTROL_RTS;
779  outb(info->ctrl_reg, iobase + REG_CONTROL);
780 
781  /* Set baud rate */
782  info->ctrl_reg |= 0x03;
783  outb(info->ctrl_reg, iobase + REG_CONTROL);
784 
785  /* Enable RTS */
786  info->ctrl_reg &= ~REG_CONTROL_RTS;
787  outb(info->ctrl_reg, iobase + REG_CONTROL);
788 
789  set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
790  set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
791  set_bit(XMIT_SENDING_READY, &(info->tx_state));
792  }
793 
794  /* Start the RX buffers */
795  outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
796  outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
797 
798  /* Signal that the hardware is ready */
799  set_bit(CARD_READY, &(info->hw_state));
800 
801  /* Drop TX queue */
802  skb_queue_purge(&(info->txq));
803 
804  /* Control the point at which RTS is enabled */
805  outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
806 
807  /* Timeout before it is safe to send the first HCI packet */
808  msleep(1250);
809 
810  /* Register HCI device */
811  if (hci_register_dev(hdev) < 0) {
812  BT_ERR("Can't register HCI device");
813  info->hdev = NULL;
814  hci_free_dev(hdev);
815  return -ENODEV;
816  }
817 
818  return 0;
819 }
820 
821 
822 static int bluecard_close(bluecard_info_t *info)
823 {
824  unsigned int iobase = info->p_dev->resource[0]->start;
825  struct hci_dev *hdev = info->hdev;
826 
827  if (!hdev)
828  return -ENODEV;
829 
830  bluecard_hci_close(hdev);
831 
832  clear_bit(CARD_READY, &(info->hw_state));
833 
834  /* Reset card */
835  info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
836  outb(info->ctrl_reg, iobase + REG_CONTROL);
837 
838  /* Turn FPGA off */
839  outb(0x80, iobase + 0x30);
840 
841  hci_unregister_dev(hdev);
842  hci_free_dev(hdev);
843 
844  return 0;
845 }
846 
847 static int bluecard_probe(struct pcmcia_device *link)
848 {
849  bluecard_info_t *info;
850 
851  /* Create new info device */
852  info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
853  if (!info)
854  return -ENOMEM;
855 
856  info->p_dev = link;
857  link->priv = info;
858 
859  link->config_flags |= CONF_ENABLE_IRQ;
860 
861  return bluecard_config(link);
862 }
863 
864 
865 static void bluecard_detach(struct pcmcia_device *link)
866 {
867  bluecard_release(link);
868 }
869 
870 
871 static int bluecard_config(struct pcmcia_device *link)
872 {
873  bluecard_info_t *info = link->priv;
874  int i, n;
875 
876  link->config_index = 0x20;
877 
878  link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
879  link->resource[0]->end = 64;
880  link->io_lines = 6;
881 
882  for (n = 0; n < 0x400; n += 0x40) {
883  link->resource[0]->start = n ^ 0x300;
884  i = pcmcia_request_io(link);
885  if (i == 0)
886  break;
887  }
888 
889  if (i != 0)
890  goto failed;
891 
892  i = pcmcia_request_irq(link, bluecard_interrupt);
893  if (i != 0)
894  goto failed;
895 
896  i = pcmcia_enable_device(link);
897  if (i != 0)
898  goto failed;
899 
900  if (bluecard_open(info) != 0)
901  goto failed;
902 
903  return 0;
904 
905 failed:
906  bluecard_release(link);
907  return -ENODEV;
908 }
909 
910 
911 static void bluecard_release(struct pcmcia_device *link)
912 {
913  bluecard_info_t *info = link->priv;
914 
915  bluecard_close(info);
916 
917  del_timer(&(info->timer));
918 
919  pcmcia_disable_device(link);
920 }
921 
922 static const struct pcmcia_device_id bluecard_ids[] = {
923  PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
924  PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
925  PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
926  PCMCIA_DEVICE_NULL
927 };
928 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
929 
930 static struct pcmcia_driver bluecard_driver = {
931  .owner = THIS_MODULE,
932  .name = "bluecard_cs",
933  .probe = bluecard_probe,
934  .remove = bluecard_detach,
935  .id_table = bluecard_ids,
936 };
937 
938 static int __init init_bluecard_cs(void)
939 {
940  return pcmcia_register_driver(&bluecard_driver);
941 }
942 
943 
944 static void __exit exit_bluecard_cs(void)
945 {
946  pcmcia_unregister_driver(&bluecard_driver);
947 }
948 
949 module_init(init_bluecard_cs);
950 module_exit(exit_bluecard_cs);
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