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1 | /* |
2 | * |
3 | * Driver for the 3Com Bluetooth PCMCIA card |
4 | * |
5 | * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org> |
6 | * Jose Orlando Pereira <jop@di.uminho.pt> |
7 | * |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License version 2 as |
11 | * published by the Free Software Foundation; |
12 | * |
13 | * Software distributed under the License is distributed on an "AS |
14 | * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
15 | * implied. See the License for the specific language governing |
16 | * rights and limitations under the License. |
17 | * |
18 | * The initial developer of the original code is David A. Hinds |
19 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds |
20 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
21 | * |
22 | */ |
23 | |
24 | #include <linux/module.h> |
25 | |
26 | #include <linux/kernel.h> |
27 | #include <linux/init.h> |
28 | #include <linux/slab.h> |
29 | #include <linux/types.h> |
30 | #include <linux/delay.h> |
31 | #include <linux/errno.h> |
32 | #include <linux/ptrace.h> |
33 | #include <linux/ioport.h> |
34 | #include <linux/spinlock.h> |
35 | #include <linux/moduleparam.h> |
36 | |
37 | #include <linux/skbuff.h> |
38 | #include <linux/string.h> |
39 | #include <linux/serial.h> |
40 | #include <linux/serial_reg.h> |
41 | #include <linux/bitops.h> |
42 | #include <asm/system.h> |
43 | #include <asm/io.h> |
44 | |
45 | #include <linux/device.h> |
46 | #include <linux/firmware.h> |
47 | |
48 | #include <pcmcia/cs_types.h> |
49 | #include <pcmcia/cs.h> |
50 | #include <pcmcia/cistpl.h> |
51 | #include <pcmcia/ciscode.h> |
52 | #include <pcmcia/ds.h> |
53 | #include <pcmcia/cisreg.h> |
54 | |
55 | #include <net/bluetooth/bluetooth.h> |
56 | #include <net/bluetooth/hci_core.h> |
57 | |
58 | |
59 | |
60 | /* ======================== Module parameters ======================== */ |
61 | |
62 | |
63 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
64 | MODULE_DESCRIPTION("Bluetooth driver for the 3Com Bluetooth PCMCIA card"); |
65 | MODULE_LICENSE("GPL"); |
66 | MODULE_FIRMWARE("BT3CPCC.bin"); |
67 | |
68 | |
69 | |
70 | /* ======================== Local structures ======================== */ |
71 | |
72 | |
73 | typedef struct bt3c_info_t { |
74 | struct pcmcia_device *p_dev; |
75 | dev_node_t node; |
76 | |
77 | struct hci_dev *hdev; |
78 | |
79 | spinlock_t lock; /* For serializing operations */ |
80 | |
81 | struct sk_buff_head txq; |
82 | unsigned long tx_state; |
83 | |
84 | unsigned long rx_state; |
85 | unsigned long rx_count; |
86 | struct sk_buff *rx_skb; |
87 | } bt3c_info_t; |
88 | |
89 | |
90 | static int bt3c_config(struct pcmcia_device *link); |
91 | static void bt3c_release(struct pcmcia_device *link); |
92 | |
93 | static void bt3c_detach(struct pcmcia_device *p_dev); |
94 | |
95 | |
96 | /* Transmit states */ |
97 | #define XMIT_SENDING 1 |
98 | #define XMIT_WAKEUP 2 |
99 | #define XMIT_WAITING 8 |
100 | |
101 | /* Receiver states */ |
102 | #define RECV_WAIT_PACKET_TYPE 0 |
103 | #define RECV_WAIT_EVENT_HEADER 1 |
104 | #define RECV_WAIT_ACL_HEADER 2 |
105 | #define RECV_WAIT_SCO_HEADER 3 |
106 | #define RECV_WAIT_DATA 4 |
107 | |
108 | |
109 | |
110 | /* ======================== Special I/O functions ======================== */ |
111 | |
112 | |
113 | #define DATA_L 0 |
114 | #define DATA_H 1 |
115 | #define ADDR_L 2 |
116 | #define ADDR_H 3 |
117 | #define CONTROL 4 |
118 | |
119 | |
120 | static inline void bt3c_address(unsigned int iobase, unsigned short addr) |
121 | { |
122 | outb(addr & 0xff, iobase + ADDR_L); |
123 | outb((addr >> 8) & 0xff, iobase + ADDR_H); |
124 | } |
125 | |
126 | |
127 | static inline void bt3c_put(unsigned int iobase, unsigned short value) |
128 | { |
129 | outb(value & 0xff, iobase + DATA_L); |
130 | outb((value >> 8) & 0xff, iobase + DATA_H); |
131 | } |
132 | |
133 | |
134 | static inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value) |
135 | { |
136 | bt3c_address(iobase, addr); |
137 | bt3c_put(iobase, value); |
138 | } |
139 | |
140 | |
141 | static inline unsigned short bt3c_get(unsigned int iobase) |
142 | { |
143 | unsigned short value = inb(iobase + DATA_L); |
144 | |
145 | value |= inb(iobase + DATA_H) << 8; |
146 | |
147 | return value; |
148 | } |
149 | |
150 | |
151 | static inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr) |
152 | { |
153 | bt3c_address(iobase, addr); |
154 | |
155 | return bt3c_get(iobase); |
156 | } |
157 | |
158 | |
159 | |
160 | /* ======================== Interrupt handling ======================== */ |
161 | |
162 | |
163 | static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len) |
164 | { |
165 | int actual = 0; |
166 | |
167 | bt3c_address(iobase, 0x7080); |
168 | |
169 | /* Fill FIFO with current frame */ |
170 | while (actual < len) { |
171 | /* Transmit next byte */ |
172 | bt3c_put(iobase, buf[actual]); |
173 | actual++; |
174 | } |
175 | |
176 | bt3c_io_write(iobase, 0x7005, actual); |
177 | |
178 | return actual; |
179 | } |
180 | |
181 | |
182 | static void bt3c_write_wakeup(bt3c_info_t *info) |
183 | { |
184 | if (!info) { |
185 | BT_ERR("Unknown device"); |
186 | return; |
187 | } |
188 | |
189 | if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) |
190 | return; |
191 | |
192 | do { |
193 | register unsigned int iobase = info->p_dev->io.BasePort1; |
194 | register struct sk_buff *skb; |
195 | register int len; |
196 | |
197 | if (!pcmcia_dev_present(info->p_dev)) |
198 | break; |
199 | |
200 | |
201 | if (!(skb = skb_dequeue(&(info->txq)))) { |
202 | clear_bit(XMIT_SENDING, &(info->tx_state)); |
203 | break; |
204 | } |
205 | |
206 | /* Send frame */ |
207 | len = bt3c_write(iobase, 256, skb->data, skb->len); |
208 | |
209 | if (len != skb->len) { |
210 | BT_ERR("Very strange"); |
211 | } |
212 | |
213 | kfree_skb(skb); |
214 | |
215 | info->hdev->stat.byte_tx += len; |
216 | |
217 | } while (0); |
218 | } |
219 | |
220 | |
221 | static void bt3c_receive(bt3c_info_t *info) |
222 | { |
223 | unsigned int iobase; |
224 | int size = 0, avail; |
225 | |
226 | if (!info) { |
227 | BT_ERR("Unknown device"); |
228 | return; |
229 | } |
230 | |
231 | iobase = info->p_dev->io.BasePort1; |
232 | |
233 | avail = bt3c_read(iobase, 0x7006); |
234 | //printk("bt3c_cs: receiving %d bytes\n", avail); |
235 | |
236 | bt3c_address(iobase, 0x7480); |
237 | while (size < avail) { |
238 | size++; |
239 | info->hdev->stat.byte_rx++; |
240 | |
241 | /* Allocate packet */ |
242 | if (info->rx_skb == NULL) { |
243 | info->rx_state = RECV_WAIT_PACKET_TYPE; |
244 | info->rx_count = 0; |
245 | if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { |
246 | BT_ERR("Can't allocate mem for new packet"); |
247 | return; |
248 | } |
249 | } |
250 | |
251 | |
252 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { |
253 | |
254 | info->rx_skb->dev = (void *) info->hdev; |
255 | bt_cb(info->rx_skb)->pkt_type = inb(iobase + DATA_L); |
256 | inb(iobase + DATA_H); |
257 | //printk("bt3c: PACKET_TYPE=%02x\n", bt_cb(info->rx_skb)->pkt_type); |
258 | |
259 | switch (bt_cb(info->rx_skb)->pkt_type) { |
260 | |
261 | case HCI_EVENT_PKT: |
262 | info->rx_state = RECV_WAIT_EVENT_HEADER; |
263 | info->rx_count = HCI_EVENT_HDR_SIZE; |
264 | break; |
265 | |
266 | case HCI_ACLDATA_PKT: |
267 | info->rx_state = RECV_WAIT_ACL_HEADER; |
268 | info->rx_count = HCI_ACL_HDR_SIZE; |
269 | break; |
270 | |
271 | case HCI_SCODATA_PKT: |
272 | info->rx_state = RECV_WAIT_SCO_HEADER; |
273 | info->rx_count = HCI_SCO_HDR_SIZE; |
274 | break; |
275 | |
276 | default: |
277 | /* Unknown packet */ |
278 | BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); |
279 | info->hdev->stat.err_rx++; |
280 | clear_bit(HCI_RUNNING, &(info->hdev->flags)); |
281 | |
282 | kfree_skb(info->rx_skb); |
283 | info->rx_skb = NULL; |
284 | break; |
285 | |
286 | } |
287 | |
288 | } else { |
289 | |
290 | __u8 x = inb(iobase + DATA_L); |
291 | |
292 | *skb_put(info->rx_skb, 1) = x; |
293 | inb(iobase + DATA_H); |
294 | info->rx_count--; |
295 | |
296 | if (info->rx_count == 0) { |
297 | |
298 | int dlen; |
299 | struct hci_event_hdr *eh; |
300 | struct hci_acl_hdr *ah; |
301 | struct hci_sco_hdr *sh; |
302 | |
303 | switch (info->rx_state) { |
304 | |
305 | case RECV_WAIT_EVENT_HEADER: |
306 | eh = hci_event_hdr(info->rx_skb); |
307 | info->rx_state = RECV_WAIT_DATA; |
308 | info->rx_count = eh->plen; |
309 | break; |
310 | |
311 | case RECV_WAIT_ACL_HEADER: |
312 | ah = hci_acl_hdr(info->rx_skb); |
313 | dlen = __le16_to_cpu(ah->dlen); |
314 | info->rx_state = RECV_WAIT_DATA; |
315 | info->rx_count = dlen; |
316 | break; |
317 | |
318 | case RECV_WAIT_SCO_HEADER: |
319 | sh = hci_sco_hdr(info->rx_skb); |
320 | info->rx_state = RECV_WAIT_DATA; |
321 | info->rx_count = sh->dlen; |
322 | break; |
323 | |
324 | case RECV_WAIT_DATA: |
325 | hci_recv_frame(info->rx_skb); |
326 | info->rx_skb = NULL; |
327 | break; |
328 | |
329 | } |
330 | |
331 | } |
332 | |
333 | } |
334 | |
335 | } |
336 | |
337 | bt3c_io_write(iobase, 0x7006, 0x0000); |
338 | } |
339 | |
340 | |
341 | static irqreturn_t bt3c_interrupt(int irq, void *dev_inst) |
342 | { |
343 | bt3c_info_t *info = dev_inst; |
344 | unsigned int iobase; |
345 | int iir; |
346 | irqreturn_t r = IRQ_NONE; |
347 | |
348 | if (!info || !info->hdev) |
349 | /* our irq handler is shared */ |
350 | return IRQ_NONE; |
351 | |
352 | iobase = info->p_dev->io.BasePort1; |
353 | |
354 | spin_lock(&(info->lock)); |
355 | |
356 | iir = inb(iobase + CONTROL); |
357 | if (iir & 0x80) { |
358 | int stat = bt3c_read(iobase, 0x7001); |
359 | |
360 | if ((stat & 0xff) == 0x7f) { |
361 | BT_ERR("Very strange (stat=0x%04x)", stat); |
362 | } else if ((stat & 0xff) != 0xff) { |
363 | if (stat & 0x0020) { |
364 | int status = bt3c_read(iobase, 0x7002) & 0x10; |
365 | BT_INFO("%s: Antenna %s", info->hdev->name, |
366 | status ? "out" : "in"); |
367 | } |
368 | if (stat & 0x0001) |
369 | bt3c_receive(info); |
370 | if (stat & 0x0002) { |
371 | //BT_ERR("Ack (stat=0x%04x)", stat); |
372 | clear_bit(XMIT_SENDING, &(info->tx_state)); |
373 | bt3c_write_wakeup(info); |
374 | } |
375 | |
376 | bt3c_io_write(iobase, 0x7001, 0x0000); |
377 | |
378 | outb(iir, iobase + CONTROL); |
379 | } |
380 | r = IRQ_HANDLED; |
381 | } |
382 | |
383 | spin_unlock(&(info->lock)); |
384 | |
385 | return r; |
386 | } |
387 | |
388 | |
389 | |
390 | /* ======================== HCI interface ======================== */ |
391 | |
392 | |
393 | static int bt3c_hci_flush(struct hci_dev *hdev) |
394 | { |
395 | bt3c_info_t *info = (bt3c_info_t *)(hdev->driver_data); |
396 | |
397 | /* Drop TX queue */ |
398 | skb_queue_purge(&(info->txq)); |
399 | |
400 | return 0; |
401 | } |
402 | |
403 | |
404 | static int bt3c_hci_open(struct hci_dev *hdev) |
405 | { |
406 | set_bit(HCI_RUNNING, &(hdev->flags)); |
407 | |
408 | return 0; |
409 | } |
410 | |
411 | |
412 | static int bt3c_hci_close(struct hci_dev *hdev) |
413 | { |
414 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) |
415 | return 0; |
416 | |
417 | bt3c_hci_flush(hdev); |
418 | |
419 | return 0; |
420 | } |
421 | |
422 | |
423 | static int bt3c_hci_send_frame(struct sk_buff *skb) |
424 | { |
425 | bt3c_info_t *info; |
426 | struct hci_dev *hdev = (struct hci_dev *)(skb->dev); |
427 | unsigned long flags; |
428 | |
429 | if (!hdev) { |
430 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); |
431 | return -ENODEV; |
432 | } |
433 | |
434 | info = (bt3c_info_t *) (hdev->driver_data); |
435 | |
436 | switch (bt_cb(skb)->pkt_type) { |
437 | case HCI_COMMAND_PKT: |
438 | hdev->stat.cmd_tx++; |
439 | break; |
440 | case HCI_ACLDATA_PKT: |
441 | hdev->stat.acl_tx++; |
442 | break; |
443 | case HCI_SCODATA_PKT: |
444 | hdev->stat.sco_tx++; |
445 | break; |
446 | }; |
447 | |
448 | /* Prepend skb with frame type */ |
449 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
450 | skb_queue_tail(&(info->txq), skb); |
451 | |
452 | spin_lock_irqsave(&(info->lock), flags); |
453 | |
454 | bt3c_write_wakeup(info); |
455 | |
456 | spin_unlock_irqrestore(&(info->lock), flags); |
457 | |
458 | return 0; |
459 | } |
460 | |
461 | |
462 | static void bt3c_hci_destruct(struct hci_dev *hdev) |
463 | { |
464 | } |
465 | |
466 | |
467 | static int bt3c_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) |
468 | { |
469 | return -ENOIOCTLCMD; |
470 | } |
471 | |
472 | |
473 | |
474 | /* ======================== Card services HCI interaction ======================== */ |
475 | |
476 | |
477 | static int bt3c_load_firmware(bt3c_info_t *info, const unsigned char *firmware, |
478 | int count) |
479 | { |
480 | char *ptr = (char *) firmware; |
481 | char b[9]; |
482 | unsigned int iobase, size, addr, fcs, tmp; |
483 | int i, err = 0; |
484 | |
485 | iobase = info->p_dev->io.BasePort1; |
486 | |
487 | /* Reset */ |
488 | bt3c_io_write(iobase, 0x8040, 0x0404); |
489 | bt3c_io_write(iobase, 0x8040, 0x0400); |
490 | |
491 | udelay(1); |
492 | |
493 | bt3c_io_write(iobase, 0x8040, 0x0404); |
494 | |
495 | udelay(17); |
496 | |
497 | /* Load */ |
498 | while (count) { |
499 | if (ptr[0] != 'S') { |
500 | BT_ERR("Bad address in firmware"); |
501 | err = -EFAULT; |
502 | goto error; |
503 | } |
504 | |
505 | memset(b, 0, sizeof(b)); |
506 | memcpy(b, ptr + 2, 2); |
507 | size = simple_strtoul(b, NULL, 16); |
508 | |
509 | memset(b, 0, sizeof(b)); |
510 | memcpy(b, ptr + 4, 8); |
511 | addr = simple_strtoul(b, NULL, 16); |
512 | |
513 | memset(b, 0, sizeof(b)); |
514 | memcpy(b, ptr + (size * 2) + 2, 2); |
515 | fcs = simple_strtoul(b, NULL, 16); |
516 | |
517 | memset(b, 0, sizeof(b)); |
518 | for (tmp = 0, i = 0; i < size; i++) { |
519 | memcpy(b, ptr + (i * 2) + 2, 2); |
520 | tmp += simple_strtol(b, NULL, 16); |
521 | } |
522 | |
523 | if (((tmp + fcs) & 0xff) != 0xff) { |
524 | BT_ERR("Checksum error in firmware"); |
525 | err = -EILSEQ; |
526 | goto error; |
527 | } |
528 | |
529 | if (ptr[1] == '3') { |
530 | bt3c_address(iobase, addr); |
531 | |
532 | memset(b, 0, sizeof(b)); |
533 | for (i = 0; i < (size - 4) / 2; i++) { |
534 | memcpy(b, ptr + (i * 4) + 12, 4); |
535 | tmp = simple_strtoul(b, NULL, 16); |
536 | bt3c_put(iobase, tmp); |
537 | } |
538 | } |
539 | |
540 | ptr += (size * 2) + 6; |
541 | count -= (size * 2) + 6; |
542 | } |
543 | |
544 | udelay(17); |
545 | |
546 | /* Boot */ |
547 | bt3c_address(iobase, 0x3000); |
548 | outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL); |
549 | |
550 | error: |
551 | udelay(17); |
552 | |
553 | /* Clear */ |
554 | bt3c_io_write(iobase, 0x7006, 0x0000); |
555 | bt3c_io_write(iobase, 0x7005, 0x0000); |
556 | bt3c_io_write(iobase, 0x7001, 0x0000); |
557 | |
558 | return err; |
559 | } |
560 | |
561 | |
562 | static int bt3c_open(bt3c_info_t *info) |
563 | { |
564 | const struct firmware *firmware; |
565 | struct hci_dev *hdev; |
566 | int err; |
567 | |
568 | spin_lock_init(&(info->lock)); |
569 | |
570 | skb_queue_head_init(&(info->txq)); |
571 | |
572 | info->rx_state = RECV_WAIT_PACKET_TYPE; |
573 | info->rx_count = 0; |
574 | info->rx_skb = NULL; |
575 | |
576 | /* Initialize HCI device */ |
577 | hdev = hci_alloc_dev(); |
578 | if (!hdev) { |
579 | BT_ERR("Can't allocate HCI device"); |
580 | return -ENOMEM; |
581 | } |
582 | |
583 | info->hdev = hdev; |
584 | |
585 | hdev->bus = HCI_PCCARD; |
586 | hdev->driver_data = info; |
587 | SET_HCIDEV_DEV(hdev, &info->p_dev->dev); |
588 | |
589 | hdev->open = bt3c_hci_open; |
590 | hdev->close = bt3c_hci_close; |
591 | hdev->flush = bt3c_hci_flush; |
592 | hdev->send = bt3c_hci_send_frame; |
593 | hdev->destruct = bt3c_hci_destruct; |
594 | hdev->ioctl = bt3c_hci_ioctl; |
595 | |
596 | hdev->owner = THIS_MODULE; |
597 | |
598 | /* Load firmware */ |
599 | err = request_firmware(&firmware, "BT3CPCC.bin", &info->p_dev->dev); |
600 | if (err < 0) { |
601 | BT_ERR("Firmware request failed"); |
602 | goto error; |
603 | } |
604 | |
605 | err = bt3c_load_firmware(info, firmware->data, firmware->size); |
606 | |
607 | release_firmware(firmware); |
608 | |
609 | if (err < 0) { |
610 | BT_ERR("Firmware loading failed"); |
611 | goto error; |
612 | } |
613 | |
614 | /* Timeout before it is safe to send the first HCI packet */ |
615 | msleep(1000); |
616 | |
617 | /* Register HCI device */ |
618 | err = hci_register_dev(hdev); |
619 | if (err < 0) { |
620 | BT_ERR("Can't register HCI device"); |
621 | goto error; |
622 | } |
623 | |
624 | return 0; |
625 | |
626 | error: |
627 | info->hdev = NULL; |
628 | hci_free_dev(hdev); |
629 | return err; |
630 | } |
631 | |
632 | |
633 | static int bt3c_close(bt3c_info_t *info) |
634 | { |
635 | struct hci_dev *hdev = info->hdev; |
636 | |
637 | if (!hdev) |
638 | return -ENODEV; |
639 | |
640 | bt3c_hci_close(hdev); |
641 | |
642 | if (hci_unregister_dev(hdev) < 0) |
643 | BT_ERR("Can't unregister HCI device %s", hdev->name); |
644 | |
645 | hci_free_dev(hdev); |
646 | |
647 | return 0; |
648 | } |
649 | |
650 | static int bt3c_probe(struct pcmcia_device *link) |
651 | { |
652 | bt3c_info_t *info; |
653 | |
654 | /* Create new info device */ |
655 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
656 | if (!info) |
657 | return -ENOMEM; |
658 | |
659 | info->p_dev = link; |
660 | link->priv = info; |
661 | |
662 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; |
663 | link->io.NumPorts1 = 8; |
664 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; |
665 | |
666 | link->irq.Handler = bt3c_interrupt; |
667 | |
668 | link->conf.Attributes = CONF_ENABLE_IRQ; |
669 | link->conf.IntType = INT_MEMORY_AND_IO; |
670 | |
671 | return bt3c_config(link); |
672 | } |
673 | |
674 | |
675 | static void bt3c_detach(struct pcmcia_device *link) |
676 | { |
677 | bt3c_info_t *info = link->priv; |
678 | |
679 | bt3c_release(link); |
680 | kfree(info); |
681 | } |
682 | |
683 | static int bt3c_check_config(struct pcmcia_device *p_dev, |
684 | cistpl_cftable_entry_t *cf, |
685 | cistpl_cftable_entry_t *dflt, |
686 | unsigned int vcc, |
687 | void *priv_data) |
688 | { |
689 | unsigned long try = (unsigned long) priv_data; |
690 | |
691 | if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM)) |
692 | p_dev->conf.Vpp = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000; |
693 | if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) && |
694 | (cf->io.win[0].base != 0)) { |
695 | p_dev->io.BasePort1 = cf->io.win[0].base; |
696 | p_dev->io.IOAddrLines = (try == 0) ? 16 : |
697 | cf->io.flags & CISTPL_IO_LINES_MASK; |
698 | if (!pcmcia_request_io(p_dev, &p_dev->io)) |
699 | return 0; |
700 | } |
701 | return -ENODEV; |
702 | } |
703 | |
704 | static int bt3c_check_config_notpicky(struct pcmcia_device *p_dev, |
705 | cistpl_cftable_entry_t *cf, |
706 | cistpl_cftable_entry_t *dflt, |
707 | unsigned int vcc, |
708 | void *priv_data) |
709 | { |
710 | static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 }; |
711 | int j; |
712 | |
713 | if ((cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) { |
714 | for (j = 0; j < 5; j++) { |
715 | p_dev->io.BasePort1 = base[j]; |
716 | p_dev->io.IOAddrLines = base[j] ? 16 : 3; |
717 | if (!pcmcia_request_io(p_dev, &p_dev->io)) |
718 | return 0; |
719 | } |
720 | } |
721 | return -ENODEV; |
722 | } |
723 | |
724 | static int bt3c_config(struct pcmcia_device *link) |
725 | { |
726 | bt3c_info_t *info = link->priv; |
727 | int i; |
728 | unsigned long try; |
729 | |
730 | /* First pass: look for a config entry that looks normal. |
731 | Two tries: without IO aliases, then with aliases */ |
732 | for (try = 0; try < 2; try++) |
733 | if (!pcmcia_loop_config(link, bt3c_check_config, (void *) try)) |
734 | goto found_port; |
735 | |
736 | /* Second pass: try to find an entry that isn't picky about |
737 | its base address, then try to grab any standard serial port |
738 | address, and finally try to get any free port. */ |
739 | if (!pcmcia_loop_config(link, bt3c_check_config_notpicky, NULL)) |
740 | goto found_port; |
741 | |
742 | BT_ERR("No usable port range found"); |
743 | goto failed; |
744 | |
745 | found_port: |
746 | i = pcmcia_request_irq(link, &link->irq); |
747 | if (i != 0) |
748 | link->irq.AssignedIRQ = 0; |
749 | |
750 | i = pcmcia_request_configuration(link, &link->conf); |
751 | if (i != 0) |
752 | goto failed; |
753 | |
754 | if (bt3c_open(info) != 0) |
755 | goto failed; |
756 | |
757 | strcpy(info->node.dev_name, info->hdev->name); |
758 | link->dev_node = &info->node; |
759 | |
760 | return 0; |
761 | |
762 | failed: |
763 | bt3c_release(link); |
764 | return -ENODEV; |
765 | } |
766 | |
767 | |
768 | static void bt3c_release(struct pcmcia_device *link) |
769 | { |
770 | bt3c_info_t *info = link->priv; |
771 | |
772 | bt3c_close(info); |
773 | |
774 | pcmcia_disable_device(link); |
775 | } |
776 | |
777 | |
778 | static struct pcmcia_device_id bt3c_ids[] = { |
779 | PCMCIA_DEVICE_PROD_ID13("3COM", "Bluetooth PC Card", 0xefce0a31, 0xd4ce9b02), |
780 | PCMCIA_DEVICE_NULL |
781 | }; |
782 | MODULE_DEVICE_TABLE(pcmcia, bt3c_ids); |
783 | |
784 | static struct pcmcia_driver bt3c_driver = { |
785 | .owner = THIS_MODULE, |
786 | .drv = { |
787 | .name = "bt3c_cs", |
788 | }, |
789 | .probe = bt3c_probe, |
790 | .remove = bt3c_detach, |
791 | .id_table = bt3c_ids, |
792 | }; |
793 | |
794 | static int __init init_bt3c_cs(void) |
795 | { |
796 | return pcmcia_register_driver(&bt3c_driver); |
797 | } |
798 | |
799 | |
800 | static void __exit exit_bt3c_cs(void) |
801 | { |
802 | pcmcia_unregister_driver(&bt3c_driver); |
803 | } |
804 | |
805 | module_init(init_bt3c_cs); |
806 | module_exit(exit_bt3c_cs); |
807 |
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