Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/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                 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 (bt_cb(skb)->pkt_type & 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 (bt_cb(skb)->pkt_type & 0x80) {
283                         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
284                         DEFINE_WAIT(wait);
285 
286                         unsigned char baud_reg;
287 
288                         switch (bt_cb(skb)->pkt_type) {
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(bluecard_info_t *info, unsigned int offset)
372 {
373         unsigned int iobase;
374         unsigned char buf[31];
375         int i, len;
376 
377         if (!info) {
378                 BT_ERR("Unknown device");
379                 return;
380         }
381 
382         iobase = info->p_dev->resource[0]->start;
383 
384         if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
385                 bluecard_enable_activity_led(info);
386 
387         len = bluecard_read(iobase, offset, buf, sizeof(buf));
388 
389         for (i = 0; i < len; i++) {
390 
391                 /* Allocate packet */
392                 if (info->rx_skb == NULL) {
393                         info->rx_state = RECV_WAIT_PACKET_TYPE;
394                         info->rx_count = 0;
395                         info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
396                         if (!info->rx_skb) {
397                                 BT_ERR("Can't allocate mem for new packet");
398                                 return;
399                         }
400                 }
401 
402                 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
403 
404                         bt_cb(info->rx_skb)->pkt_type = buf[i];
405 
406                         switch (bt_cb(info->rx_skb)->pkt_type) {
407 
408                         case 0x00:
409                                 /* init packet */
410                                 if (offset != 0x00) {
411                                         set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
412                                         set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
413                                         set_bit(XMIT_SENDING_READY, &(info->tx_state));
414                                         bluecard_write_wakeup(info);
415                                 }
416 
417                                 kfree_skb(info->rx_skb);
418                                 info->rx_skb = NULL;
419                                 break;
420 
421                         case HCI_EVENT_PKT:
422                                 info->rx_state = RECV_WAIT_EVENT_HEADER;
423                                 info->rx_count = HCI_EVENT_HDR_SIZE;
424                                 break;
425 
426                         case HCI_ACLDATA_PKT:
427                                 info->rx_state = RECV_WAIT_ACL_HEADER;
428                                 info->rx_count = HCI_ACL_HDR_SIZE;
429                                 break;
430 
431                         case HCI_SCODATA_PKT:
432                                 info->rx_state = RECV_WAIT_SCO_HEADER;
433                                 info->rx_count = HCI_SCO_HDR_SIZE;
434                                 break;
435 
436                         default:
437                                 /* unknown packet */
438                                 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
439                                 info->hdev->stat.err_rx++;
440 
441                                 kfree_skb(info->rx_skb);
442                                 info->rx_skb = NULL;
443                                 break;
444 
445                         }
446 
447                 } else {
448 
449                         *skb_put(info->rx_skb, 1) = buf[i];
450                         info->rx_count--;
451 
452                         if (info->rx_count == 0) {
453 
454                                 int dlen;
455                                 struct hci_event_hdr *eh;
456                                 struct hci_acl_hdr *ah;
457                                 struct hci_sco_hdr *sh;
458 
459                                 switch (info->rx_state) {
460 
461                                 case RECV_WAIT_EVENT_HEADER:
462                                         eh = hci_event_hdr(info->rx_skb);
463                                         info->rx_state = RECV_WAIT_DATA;
464                                         info->rx_count = eh->plen;
465                                         break;
466 
467                                 case RECV_WAIT_ACL_HEADER:
468                                         ah = hci_acl_hdr(info->rx_skb);
469                                         dlen = __le16_to_cpu(ah->dlen);
470                                         info->rx_state = RECV_WAIT_DATA;
471                                         info->rx_count = dlen;
472                                         break;
473 
474                                 case RECV_WAIT_SCO_HEADER:
475                                         sh = hci_sco_hdr(info->rx_skb);
476                                         info->rx_state = RECV_WAIT_DATA;
477                                         info->rx_count = sh->dlen;
478                                         break;
479 
480                                 case RECV_WAIT_DATA:
481                                         hci_recv_frame(info->hdev, info->rx_skb);
482                                         info->rx_skb = NULL;
483                                         break;
484 
485                                 }
486 
487                         }
488 
489                 }
490 
491 
492         }
493 
494         info->hdev->stat.byte_rx += len;
495 }
496 
497 
498 static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
499 {
500         bluecard_info_t *info = dev_inst;
501         unsigned int iobase;
502         unsigned char reg;
503 
504         if (!info || !info->hdev)
505                 /* our irq handler is shared */
506                 return IRQ_NONE;
507 
508         if (!test_bit(CARD_READY, &(info->hw_state)))
509                 return IRQ_HANDLED;
510 
511         iobase = info->p_dev->resource[0]->start;
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 = hci_get_drvdata(hdev);
566         struct sk_buff *skb;
567 
568         /* Ericsson baud rate command */
569         unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
570 
571         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
572         if (!skb) {
573                 BT_ERR("Can't allocate mem for new packet");
574                 return -1;
575         }
576 
577         switch (baud) {
578         case 460800:
579                 cmd[4] = 0x00;
580                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
581                 break;
582         case 230400:
583                 cmd[4] = 0x01;
584                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
585                 break;
586         case 115200:
587                 cmd[4] = 0x02;
588                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
589                 break;
590         case 57600:
591                 /* Fall through... */
592         default:
593                 cmd[4] = 0x03;
594                 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
595                 break;
596         }
597 
598         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
599 
600         skb_queue_tail(&(info->txq), skb);
601 
602         bluecard_write_wakeup(info);
603 
604         return 0;
605 }
606 
607 
608 
609 /* ======================== HCI interface ======================== */
610 
611 
612 static int bluecard_hci_flush(struct hci_dev *hdev)
613 {
614         bluecard_info_t *info = hci_get_drvdata(hdev);
615 
616         /* Drop TX queue */
617         skb_queue_purge(&(info->txq));
618 
619         return 0;
620 }
621 
622 
623 static int bluecard_hci_open(struct hci_dev *hdev)
624 {
625         bluecard_info_t *info = hci_get_drvdata(hdev);
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                 unsigned int iobase = info->p_dev->resource[0]->start;
635 
636                 /* Enable LED */
637                 outb(0x08 | 0x20, iobase + 0x30);
638         }
639 
640         return 0;
641 }
642 
643 
644 static int bluecard_hci_close(struct hci_dev *hdev)
645 {
646         bluecard_info_t *info = hci_get_drvdata(hdev);
647 
648         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
649                 return 0;
650 
651         bluecard_hci_flush(hdev);
652 
653         if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
654                 unsigned int iobase = info->p_dev->resource[0]->start;
655 
656                 /* Disable LED */
657                 outb(0x00, iobase + 0x30);
658         }
659 
660         return 0;
661 }
662 
663 
664 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
665 {
666         bluecard_info_t *info = hci_get_drvdata(hdev);
667 
668         switch (bt_cb(skb)->pkt_type) {
669         case HCI_COMMAND_PKT:
670                 hdev->stat.cmd_tx++;
671                 break;
672         case HCI_ACLDATA_PKT:
673                 hdev->stat.acl_tx++;
674                 break;
675         case HCI_SCODATA_PKT:
676                 hdev->stat.sco_tx++;
677                 break;
678         }
679 
680         /* Prepend skb with frame type */
681         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
682         skb_queue_tail(&(info->txq), skb);
683 
684         bluecard_write_wakeup(info);
685 
686         return 0;
687 }
688 
689 
690 
691 /* ======================== Card services HCI interaction ======================== */
692 
693 
694 static int bluecard_open(bluecard_info_t *info)
695 {
696         unsigned int iobase = info->p_dev->resource[0]->start;
697         struct hci_dev *hdev;
698         unsigned char id;
699 
700         spin_lock_init(&(info->lock));
701 
702         init_timer(&(info->timer));
703         info->timer.function = &bluecard_activity_led_timeout;
704         info->timer.data = (u_long)info;
705 
706         skb_queue_head_init(&(info->txq));
707 
708         info->rx_state = RECV_WAIT_PACKET_TYPE;
709         info->rx_count = 0;
710         info->rx_skb = NULL;
711 
712         /* Initialize HCI device */
713         hdev = hci_alloc_dev();
714         if (!hdev) {
715                 BT_ERR("Can't allocate HCI device");
716                 return -ENOMEM;
717         }
718 
719         info->hdev = hdev;
720 
721         hdev->bus = HCI_PCCARD;
722         hci_set_drvdata(hdev, info);
723         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
724 
725         hdev->open  = bluecard_hci_open;
726         hdev->close = bluecard_hci_close;
727         hdev->flush = bluecard_hci_flush;
728         hdev->send  = bluecard_hci_send_frame;
729 
730         id = inb(iobase + 0x30);
731 
732         if ((id & 0x0f) == 0x02)
733                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
734 
735         if (id & 0x10)
736                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
737 
738         if (id & 0x20)
739                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
740 
741         /* Reset card */
742         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
743         outb(info->ctrl_reg, iobase + REG_CONTROL);
744 
745         /* Turn FPGA off */
746         outb(0x80, iobase + 0x30);
747 
748         /* Wait some time */
749         msleep(10);
750 
751         /* Turn FPGA on */
752         outb(0x00, iobase + 0x30);
753 
754         /* Activate card */
755         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
756         outb(info->ctrl_reg, iobase + REG_CONTROL);
757 
758         /* Enable interrupt */
759         outb(0xff, iobase + REG_INTERRUPT);
760         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
761         outb(info->ctrl_reg, iobase + REG_CONTROL);
762 
763         if ((id & 0x0f) == 0x03) {
764                 /* Disable RTS */
765                 info->ctrl_reg |= REG_CONTROL_RTS;
766                 outb(info->ctrl_reg, iobase + REG_CONTROL);
767 
768                 /* Set baud rate */
769                 info->ctrl_reg |= 0x03;
770                 outb(info->ctrl_reg, iobase + REG_CONTROL);
771 
772                 /* Enable RTS */
773                 info->ctrl_reg &= ~REG_CONTROL_RTS;
774                 outb(info->ctrl_reg, iobase + REG_CONTROL);
775 
776                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
777                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
778                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
779         }
780 
781         /* Start the RX buffers */
782         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
783         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
784 
785         /* Signal that the hardware is ready */
786         set_bit(CARD_READY, &(info->hw_state));
787 
788         /* Drop TX queue */
789         skb_queue_purge(&(info->txq));
790 
791         /* Control the point at which RTS is enabled */
792         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
793 
794         /* Timeout before it is safe to send the first HCI packet */
795         msleep(1250);
796 
797         /* Register HCI device */
798         if (hci_register_dev(hdev) < 0) {
799                 BT_ERR("Can't register HCI device");
800                 info->hdev = NULL;
801                 hci_free_dev(hdev);
802                 return -ENODEV;
803         }
804 
805         return 0;
806 }
807 
808 
809 static int bluecard_close(bluecard_info_t *info)
810 {
811         unsigned int iobase = info->p_dev->resource[0]->start;
812         struct hci_dev *hdev = info->hdev;
813 
814         if (!hdev)
815                 return -ENODEV;
816 
817         bluecard_hci_close(hdev);
818 
819         clear_bit(CARD_READY, &(info->hw_state));
820 
821         /* Reset card */
822         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
823         outb(info->ctrl_reg, iobase + REG_CONTROL);
824 
825         /* Turn FPGA off */
826         outb(0x80, iobase + 0x30);
827 
828         hci_unregister_dev(hdev);
829         hci_free_dev(hdev);
830 
831         return 0;
832 }
833 
834 static int bluecard_probe(struct pcmcia_device *link)
835 {
836         bluecard_info_t *info;
837 
838         /* Create new info device */
839         info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
840         if (!info)
841                 return -ENOMEM;
842 
843         info->p_dev = link;
844         link->priv = info;
845 
846         link->config_flags |= CONF_ENABLE_IRQ;
847 
848         return bluecard_config(link);
849 }
850 
851 
852 static void bluecard_detach(struct pcmcia_device *link)
853 {
854         bluecard_release(link);
855 }
856 
857 
858 static int bluecard_config(struct pcmcia_device *link)
859 {
860         bluecard_info_t *info = link->priv;
861         int i, n;
862 
863         link->config_index = 0x20;
864 
865         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
866         link->resource[0]->end = 64;
867         link->io_lines = 6;
868 
869         for (n = 0; n < 0x400; n += 0x40) {
870                 link->resource[0]->start = n ^ 0x300;
871                 i = pcmcia_request_io(link);
872                 if (i == 0)
873                         break;
874         }
875 
876         if (i != 0)
877                 goto failed;
878 
879         i = pcmcia_request_irq(link, bluecard_interrupt);
880         if (i != 0)
881                 goto failed;
882 
883         i = pcmcia_enable_device(link);
884         if (i != 0)
885                 goto failed;
886 
887         if (bluecard_open(info) != 0)
888                 goto failed;
889 
890         return 0;
891 
892 failed:
893         bluecard_release(link);
894         return -ENODEV;
895 }
896 
897 
898 static void bluecard_release(struct pcmcia_device *link)
899 {
900         bluecard_info_t *info = link->priv;
901 
902         bluecard_close(info);
903 
904         del_timer_sync(&(info->timer));
905 
906         pcmcia_disable_device(link);
907 }
908 
909 static const struct pcmcia_device_id bluecard_ids[] = {
910         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
911         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
912         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
913         PCMCIA_DEVICE_NULL
914 };
915 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
916 
917 static struct pcmcia_driver bluecard_driver = {
918         .owner          = THIS_MODULE,
919         .name           = "bluecard_cs",
920         .probe          = bluecard_probe,
921         .remove         = bluecard_detach,
922         .id_table       = bluecard_ids,
923 };
924 module_pcmcia_driver(bluecard_driver);
925 

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