Version:  2.0.40 2.2.26 2.4.37 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7

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 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                         *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         memcpy(skb_put(skb, sizeof(cmd)), 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         init_timer(&(info->timer));
699         info->timer.function = &bluecard_activity_led_timeout;
700         info->timer.data = (u_long)info;
701 
702         skb_queue_head_init(&(info->txq));
703 
704         info->rx_state = RECV_WAIT_PACKET_TYPE;
705         info->rx_count = 0;
706         info->rx_skb = NULL;
707 
708         /* Initialize HCI device */
709         hdev = hci_alloc_dev();
710         if (!hdev) {
711                 BT_ERR("Can't allocate HCI device");
712                 return -ENOMEM;
713         }
714 
715         info->hdev = hdev;
716 
717         hdev->bus = HCI_PCCARD;
718         hci_set_drvdata(hdev, info);
719         SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
720 
721         hdev->open  = bluecard_hci_open;
722         hdev->close = bluecard_hci_close;
723         hdev->flush = bluecard_hci_flush;
724         hdev->send  = bluecard_hci_send_frame;
725 
726         id = inb(iobase + 0x30);
727 
728         if ((id & 0x0f) == 0x02)
729                 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
730 
731         if (id & 0x10)
732                 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
733 
734         if (id & 0x20)
735                 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
736 
737         /* Reset card */
738         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
739         outb(info->ctrl_reg, iobase + REG_CONTROL);
740 
741         /* Turn FPGA off */
742         outb(0x80, iobase + 0x30);
743 
744         /* Wait some time */
745         msleep(10);
746 
747         /* Turn FPGA on */
748         outb(0x00, iobase + 0x30);
749 
750         /* Activate card */
751         info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
752         outb(info->ctrl_reg, iobase + REG_CONTROL);
753 
754         /* Enable interrupt */
755         outb(0xff, iobase + REG_INTERRUPT);
756         info->ctrl_reg |= REG_CONTROL_INTERRUPT;
757         outb(info->ctrl_reg, iobase + REG_CONTROL);
758 
759         if ((id & 0x0f) == 0x03) {
760                 /* Disable RTS */
761                 info->ctrl_reg |= REG_CONTROL_RTS;
762                 outb(info->ctrl_reg, iobase + REG_CONTROL);
763 
764                 /* Set baud rate */
765                 info->ctrl_reg |= 0x03;
766                 outb(info->ctrl_reg, iobase + REG_CONTROL);
767 
768                 /* Enable RTS */
769                 info->ctrl_reg &= ~REG_CONTROL_RTS;
770                 outb(info->ctrl_reg, iobase + REG_CONTROL);
771 
772                 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
773                 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
774                 set_bit(XMIT_SENDING_READY, &(info->tx_state));
775         }
776 
777         /* Start the RX buffers */
778         outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
779         outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
780 
781         /* Signal that the hardware is ready */
782         set_bit(CARD_READY, &(info->hw_state));
783 
784         /* Drop TX queue */
785         skb_queue_purge(&(info->txq));
786 
787         /* Control the point at which RTS is enabled */
788         outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
789 
790         /* Timeout before it is safe to send the first HCI packet */
791         msleep(1250);
792 
793         /* Register HCI device */
794         if (hci_register_dev(hdev) < 0) {
795                 BT_ERR("Can't register HCI device");
796                 info->hdev = NULL;
797                 hci_free_dev(hdev);
798                 return -ENODEV;
799         }
800 
801         return 0;
802 }
803 
804 
805 static int bluecard_close(struct bluecard_info *info)
806 {
807         unsigned int iobase = info->p_dev->resource[0]->start;
808         struct hci_dev *hdev = info->hdev;
809 
810         if (!hdev)
811                 return -ENODEV;
812 
813         bluecard_hci_close(hdev);
814 
815         clear_bit(CARD_READY, &(info->hw_state));
816 
817         /* Reset card */
818         info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
819         outb(info->ctrl_reg, iobase + REG_CONTROL);
820 
821         /* Turn FPGA off */
822         outb(0x80, iobase + 0x30);
823 
824         hci_unregister_dev(hdev);
825         hci_free_dev(hdev);
826 
827         return 0;
828 }
829 
830 static int bluecard_probe(struct pcmcia_device *link)
831 {
832         struct bluecard_info *info;
833 
834         /* Create new info device */
835         info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
836         if (!info)
837                 return -ENOMEM;
838 
839         info->p_dev = link;
840         link->priv = info;
841 
842         link->config_flags |= CONF_ENABLE_IRQ;
843 
844         return bluecard_config(link);
845 }
846 
847 
848 static void bluecard_detach(struct pcmcia_device *link)
849 {
850         bluecard_release(link);
851 }
852 
853 
854 static int bluecard_config(struct pcmcia_device *link)
855 {
856         struct bluecard_info *info = link->priv;
857         int i, n;
858 
859         link->config_index = 0x20;
860 
861         link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
862         link->resource[0]->end = 64;
863         link->io_lines = 6;
864 
865         for (n = 0; n < 0x400; n += 0x40) {
866                 link->resource[0]->start = n ^ 0x300;
867                 i = pcmcia_request_io(link);
868                 if (i == 0)
869                         break;
870         }
871 
872         if (i != 0)
873                 goto failed;
874 
875         i = pcmcia_request_irq(link, bluecard_interrupt);
876         if (i != 0)
877                 goto failed;
878 
879         i = pcmcia_enable_device(link);
880         if (i != 0)
881                 goto failed;
882 
883         if (bluecard_open(info) != 0)
884                 goto failed;
885 
886         return 0;
887 
888 failed:
889         bluecard_release(link);
890         return -ENODEV;
891 }
892 
893 
894 static void bluecard_release(struct pcmcia_device *link)
895 {
896         struct bluecard_info *info = link->priv;
897 
898         bluecard_close(info);
899 
900         del_timer_sync(&(info->timer));
901 
902         pcmcia_disable_device(link);
903 }
904 
905 static const struct pcmcia_device_id bluecard_ids[] = {
906         PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
907         PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
908         PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
909         PCMCIA_DEVICE_NULL
910 };
911 MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
912 
913 static struct pcmcia_driver bluecard_driver = {
914         .owner          = THIS_MODULE,
915         .name           = "bluecard_cs",
916         .probe          = bluecard_probe,
917         .remove         = bluecard_detach,
918         .id_table       = bluecard_ids,
919 };
920 module_pcmcia_driver(bluecard_driver);
921 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us